git.itanic.dy.fi Git - linux-stable/blob - drivers/net/ethernet/intel/i40e/i40e_main.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright(c) 2013 - 2021 Intel Corporation. */
   3
   4 #include <linux/etherdevice.h>
   5 #include <linux/of_net.h>
   6 #include <linux/pci.h>
   7 #include <linux/bpf.h>
   8 #include <generated/utsrelease.h>
   9 #include <linux/crash_dump.h>
  10
  11 /* Local includes */
  12 #include "i40e.h"
  13 #include "i40e_diag.h"
  14 #include "i40e_xsk.h"
  15 #include <net/udp_tunnel.h>
  16 #include <net/xdp_sock_drv.h>
  17 /* All i40e tracepoints are defined by the include below, which
  18  * must be included exactly once across the whole kernel with
  19  * CREATE_TRACE_POINTS defined
  20  */
  21 #define CREATE_TRACE_POINTS
  22 #include "i40e_trace.h"
  23
  24 const char i40e_driver_name[] = "i40e";
  25 static const char i40e_driver_string[] =
  26                         "Intel(R) Ethernet Connection XL710 Network Driver";
  27
  28 static const char i40e_copyright[] = "Copyright (c) 2013 - 2019 Intel Corporation.";
  29
  30 /* a bit of forward declarations */
  31 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  32 static void i40e_handle_reset_warning(struct i40e_pf *pf, bool lock_acquired);
  33 static int i40e_add_vsi(struct i40e_vsi *vsi);
  34 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  35 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit, bool lock_acquired);
  36 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  37 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  38 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  39 static void i40e_prep_for_reset(struct i40e_pf *pf);
  40 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit,
  41                                    bool lock_acquired);
  42 static int i40e_reset(struct i40e_pf *pf);
  43 static void i40e_rebuild(struct i40e_pf *pf, bool reinit, bool lock_acquired);
  44 static int i40e_setup_misc_vector_for_recovery_mode(struct i40e_pf *pf);
  45 static int i40e_restore_interrupt_scheme(struct i40e_pf *pf);
  46 static bool i40e_check_recovery_mode(struct i40e_pf *pf);
  47 static int i40e_init_recovery_mode(struct i40e_pf *pf, struct i40e_hw *hw);
  48 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  49 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  50 static int i40e_get_capabilities(struct i40e_pf *pf,
  51                                  enum i40e_admin_queue_opc list_type);
  52 static bool i40e_is_total_port_shutdown_enabled(struct i40e_pf *pf);
  53
  54 /* i40e_pci_tbl - PCI Device ID Table
  55  *
  56  * Last entry must be all 0s
  57  *
  58  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  59  *   Class, Class Mask, private data (not used) }
  60  */
  61 static const struct pci_device_id i40e_pci_tbl[] = {
  62         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  63         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  64         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  65         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  66         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  67         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  68         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  69         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  70         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T4), 0},
  71         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_BC), 0},
  72         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_SFP), 0},
  73         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_B), 0},
  74         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_X722), 0},
  75         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_X722), 0},
  76         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
  77         {PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
  78         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
  79         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_I_X722), 0},
  80         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722_A), 0},
  81         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  82         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2_A), 0},
  83         {PCI_VDEVICE(INTEL, I40E_DEV_ID_X710_N3000), 0},
  84         {PCI_VDEVICE(INTEL, I40E_DEV_ID_XXV710_N3000), 0},
  85         {PCI_VDEVICE(INTEL, I40E_DEV_ID_25G_B), 0},
  86         {PCI_VDEVICE(INTEL, I40E_DEV_ID_25G_SFP28), 0},
  87         /* required last entry */
  88         {0, }
  89 };
  90 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  91
  92 #define I40E_MAX_VF_COUNT 128
  93 static int debug = -1;
  94 module_param(debug, uint, 0);
  95 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all), Debug mask (0x8XXXXXXX)");
  96
  97 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
  98 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
  99 MODULE_LICENSE("GPL v2");
 100
 101 static struct workqueue_struct *i40e_wq;
 102
 103 static void netdev_hw_addr_refcnt(struct i40e_mac_filter *f,
 104                                   struct net_device *netdev, int delta)
 105 {
 106         struct netdev_hw_addr *ha;
 107
 108         if (!f || !netdev)
 109                 return;
 110
 111         netdev_for_each_mc_addr(ha, netdev) {
 112                 if (ether_addr_equal(ha->addr, f->macaddr)) {
 113                         ha->refcount += delta;
 114                         if (ha->refcount <= 0)
 115                                 ha->refcount = 1;
 116                         break;
 117                 }
 118         }
 119 }
 120
 121 /**
 122  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
 123  * @hw:   pointer to the HW structure
 124  * @mem:  ptr to mem struct to fill out
 125  * @size: size of memory requested
 126  * @alignment: what to align the allocation to
 127  **/
 128 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 129                             u64 size, u32 alignment)
 130 {
 131         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 132
 133         mem->size = ALIGN(size, alignment);
 134         mem->va = dma_alloc_coherent(&pf->pdev->dev, mem->size, &mem->pa,
 135                                      GFP_KERNEL);
 136         if (!mem->va)
 137                 return -ENOMEM;
 138
 139         return 0;
 140 }
 141
 142 /**
 143  * i40e_free_dma_mem_d - OS specific memory free for shared code
 144  * @hw:   pointer to the HW structure
 145  * @mem:  ptr to mem struct to free
 146  **/
 147 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 148 {
 149         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 150
 151         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 152         mem->va = NULL;
 153         mem->pa = 0;
 154         mem->size = 0;
 155
 156         return 0;
 157 }
 158
 159 /**
 160  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 161  * @hw:   pointer to the HW structure
 162  * @mem:  ptr to mem struct to fill out
 163  * @size: size of memory requested
 164  **/
 165 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 166                              u32 size)
 167 {
 168         mem->size = size;
 169         mem->va = kzalloc(size, GFP_KERNEL);
 170
 171         if (!mem->va)
 172                 return -ENOMEM;
 173
 174         return 0;
 175 }
 176
 177 /**
 178  * i40e_free_virt_mem_d - OS specific memory free for shared code
 179  * @hw:   pointer to the HW structure
 180  * @mem:  ptr to mem struct to free
 181  **/
 182 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 183 {
 184         /* it's ok to kfree a NULL pointer */
 185         kfree(mem->va);
 186         mem->va = NULL;
 187         mem->size = 0;
 188
 189         return 0;
 190 }
 191
 192 /**
 193  * i40e_get_lump - find a lump of free generic resource
 194  * @pf: board private structure
 195  * @pile: the pile of resource to search
 196  * @needed: the number of items needed
 197  * @id: an owner id to stick on the items assigned
 198  *
 199  * Returns the base item index of the lump, or negative for error
 200  **/
 201 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 202                          u16 needed, u16 id)
 203 {
 204         int ret = -ENOMEM;
 205         int i, j;
 206
 207         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 208                 dev_info(&pf->pdev->dev,
 209                          "param err: pile=%s needed=%d id=0x%04x\n",
 210                          pile ? "<valid>" : "<null>", needed, id);
 211                 return -EINVAL;
 212         }
 213
 214         /* Allocate last queue in the pile for FDIR VSI queue
 215          * so it doesn't fragment the qp_pile
 216          */
 217         if (pile == pf->qp_pile && pf->vsi[id]->type == I40E_VSI_FDIR) {
 218                 if (pile->list[pile->num_entries - 1] & I40E_PILE_VALID_BIT) {
 219                         dev_err(&pf->pdev->dev,
 220                                 "Cannot allocate queue %d for I40E_VSI_FDIR\n",
 221                                 pile->num_entries - 1);
 222                         return -ENOMEM;
 223                 }
 224                 pile->list[pile->num_entries - 1] = id | I40E_PILE_VALID_BIT;
 225                 return pile->num_entries - 1;
 226         }
 227
 228         i = 0;
 229         while (i < pile->num_entries) {
 230                 /* skip already allocated entries */
 231                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 232                         i++;
 233                         continue;
 234                 }
 235
 236                 /* do we have enough in this lump? */
 237                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 238                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 239                                 break;
 240                 }
 241
 242                 if (j == needed) {
 243                         /* there was enough, so assign it to the requestor */
 244                         for (j = 0; j < needed; j++)
 245                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 246                         ret = i;
 247                         break;
 248                 }
 249
 250                 /* not enough, so skip over it and continue looking */
 251                 i += j;
 252         }
 253
 254         return ret;
 255 }
 256
 257 /**
 258  * i40e_put_lump - return a lump of generic resource
 259  * @pile: the pile of resource to search
 260  * @index: the base item index
 261  * @id: the owner id of the items assigned
 262  *
 263  * Returns the count of items in the lump
 264  **/
 265 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 266 {
 267         int valid_id = (id | I40E_PILE_VALID_BIT);
 268         int count = 0;
 269         u16 i;
 270
 271         if (!pile || index >= pile->num_entries)
 272                 return -EINVAL;
 273
 274         for (i = index;
 275              i < pile->num_entries && pile->list[i] == valid_id;
 276              i++) {
 277                 pile->list[i] = 0;
 278                 count++;
 279         }
 280
 281
 282         return count;
 283 }
 284
 285 /**
 286  * i40e_find_vsi_from_id - searches for the vsi with the given id
 287  * @pf: the pf structure to search for the vsi
 288  * @id: id of the vsi it is searching for
 289  **/
 290 struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
 291 {
 292         int i;
 293
 294         for (i = 0; i < pf->num_alloc_vsi; i++)
 295                 if (pf->vsi[i] && (pf->vsi[i]->id == id))
 296                         return pf->vsi[i];
 297
 298         return NULL;
 299 }
 300
 301 /**
 302  * i40e_service_event_schedule - Schedule the service task to wake up
 303  * @pf: board private structure
 304  *
 305  * If not already scheduled, this puts the task into the work queue
 306  **/
 307 void i40e_service_event_schedule(struct i40e_pf *pf)
 308 {
 309         if ((!test_bit(__I40E_DOWN, pf->state) &&
 310              !test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state)) ||
 311               test_bit(__I40E_RECOVERY_MODE, pf->state))
 312                 queue_work(i40e_wq, &pf->service_task);
 313 }
 314
 315 /**
 316  * i40e_tx_timeout - Respond to a Tx Hang
 317  * @netdev: network interface device structure
 318  * @txqueue: queue number timing out
 319  *
 320  * If any port has noticed a Tx timeout, it is likely that the whole
 321  * device is munged, not just the one netdev port, so go for the full
 322  * reset.
 323  **/
 324 static void i40e_tx_timeout(struct net_device *netdev, unsigned int txqueue)
 325 {
 326         struct i40e_netdev_priv *np = netdev_priv(netdev);
 327         struct i40e_vsi *vsi = np->vsi;
 328         struct i40e_pf *pf = vsi->back;
 329         struct i40e_ring *tx_ring = NULL;
 330         unsigned int i;
 331         u32 head, val;
 332
 333         pf->tx_timeout_count++;
 334
 335         /* with txqueue index, find the tx_ring struct */
 336         for (i = 0; i < vsi->num_queue_pairs; i++) {
 337                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
 338                         if (txqueue ==
 339                             vsi->tx_rings[i]->queue_index) {
 340                                 tx_ring = vsi->tx_rings[i];
 341                                 break;
 342                         }
 343                 }
 344         }
 345
 346         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 347                 pf->tx_timeout_recovery_level = 1;  /* reset after some time */
 348         else if (time_before(jiffies,
 349                       (pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
 350                 return;   /* don't do any new action before the next timeout */
 351
 352         /* don't kick off another recovery if one is already pending */
 353         if (test_and_set_bit(__I40E_TIMEOUT_RECOVERY_PENDING, pf->state))
 354                 return;
 355
 356         if (tx_ring) {
 357                 head = i40e_get_head(tx_ring);
 358                 /* Read interrupt register */
 359                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
 360                         val = rd32(&pf->hw,
 361                              I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
 362                                                 tx_ring->vsi->base_vector - 1));
 363                 else
 364                         val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
 365
 366                 netdev_info(netdev, "tx_timeout: VSI_seid: %d, Q %d, NTC: 0x%x, HWB: 0x%x, NTU: 0x%x, TAIL: 0x%x, INT: 0x%x\n",
 367                             vsi->seid, txqueue, tx_ring->next_to_clean,
 368                             head, tx_ring->next_to_use,
 369                             readl(tx_ring->tail), val);
 370         }
 371
 372         pf->tx_timeout_last_recovery = jiffies;
 373         netdev_info(netdev, "tx_timeout recovery level %d, txqueue %d\n",
 374                     pf->tx_timeout_recovery_level, txqueue);
 375
 376         switch (pf->tx_timeout_recovery_level) {
 377         case 1:
 378                 set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
 379                 break;
 380         case 2:
 381                 set_bit(__I40E_CORE_RESET_REQUESTED, pf->state);
 382                 break;
 383         case 3:
 384                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, pf->state);
 385                 break;
 386         default:
 387                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 388                 break;
 389         }
 390
 391         i40e_service_event_schedule(pf);
 392         pf->tx_timeout_recovery_level++;
 393 }
 394
 395 /**
 396  * i40e_get_vsi_stats_struct - Get System Network Statistics
 397  * @vsi: the VSI we care about
 398  *
 399  * Returns the address of the device statistics structure.
 400  * The statistics are actually updated from the service task.
 401  **/
 402 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 403 {
 404         return &vsi->net_stats;
 405 }
 406
 407 /**
 408  * i40e_get_netdev_stats_struct_tx - populate stats from a Tx ring
 409  * @ring: Tx ring to get statistics from
 410  * @stats: statistics entry to be updated
 411  **/
 412 static void i40e_get_netdev_stats_struct_tx(struct i40e_ring *ring,
 413                                             struct rtnl_link_stats64 *stats)
 414 {
 415         u64 bytes, packets;
 416         unsigned int start;
 417
 418         do {
 419                 start = u64_stats_fetch_begin_irq(&ring->syncp);
 420                 packets = ring->stats.packets;
 421                 bytes   = ring->stats.bytes;
 422         } while (u64_stats_fetch_retry_irq(&ring->syncp, start));
 423
 424         stats->tx_packets += packets;
 425         stats->tx_bytes   += bytes;
 426 }
 427
 428 /**
 429  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 430  * @netdev: network interface device structure
 431  * @stats: data structure to store statistics
 432  *
 433  * Returns the address of the device statistics structure.
 434  * The statistics are actually updated from the service task.
 435  **/
 436 static void i40e_get_netdev_stats_struct(struct net_device *netdev,
 437                                   struct rtnl_link_stats64 *stats)
 438 {
 439         struct i40e_netdev_priv *np = netdev_priv(netdev);
 440         struct i40e_vsi *vsi = np->vsi;
 441         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 442         struct i40e_ring *ring;
 443         int i;
 444
 445         if (test_bit(__I40E_VSI_DOWN, vsi->state))
 446                 return;
 447
 448         if (!vsi->tx_rings)
 449                 return;
 450
 451         rcu_read_lock();
 452         for (i = 0; i < vsi->num_queue_pairs; i++) {
 453                 u64 bytes, packets;
 454                 unsigned int start;
 455
 456                 ring = READ_ONCE(vsi->tx_rings[i]);
 457                 if (!ring)
 458                         continue;
 459                 i40e_get_netdev_stats_struct_tx(ring, stats);
 460
 461                 if (i40e_enabled_xdp_vsi(vsi)) {
 462                         ring = READ_ONCE(vsi->xdp_rings[i]);
 463                         if (!ring)
 464                                 continue;
 465                         i40e_get_netdev_stats_struct_tx(ring, stats);
 466                 }
 467
 468                 ring = READ_ONCE(vsi->rx_rings[i]);
 469                 if (!ring)
 470                         continue;
 471                 do {
 472                         start   = u64_stats_fetch_begin_irq(&ring->syncp);
 473                         packets = ring->stats.packets;
 474                         bytes   = ring->stats.bytes;
 475                 } while (u64_stats_fetch_retry_irq(&ring->syncp, start));
 476
 477                 stats->rx_packets += packets;
 478                 stats->rx_bytes   += bytes;
 479
 480         }
 481         rcu_read_unlock();
 482
 483         /* following stats updated by i40e_watchdog_subtask() */
 484         stats->multicast        = vsi_stats->multicast;
 485         stats->tx_errors        = vsi_stats->tx_errors;
 486         stats->tx_dropped       = vsi_stats->tx_dropped;
 487         stats->rx_errors        = vsi_stats->rx_errors;
 488         stats->rx_dropped       = vsi_stats->rx_dropped;
 489         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 490         stats->rx_length_errors = vsi_stats->rx_length_errors;
 491 }
 492
 493 /**
 494  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 495  * @vsi: the VSI to have its stats reset
 496  **/
 497 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 498 {
 499         struct rtnl_link_stats64 *ns;
 500         int i;
 501
 502         if (!vsi)
 503                 return;
 504
 505         ns = i40e_get_vsi_stats_struct(vsi);
 506         memset(ns, 0, sizeof(*ns));
 507         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 508         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 509         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 510         if (vsi->rx_rings && vsi->rx_rings[0]) {
 511                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 512                         memset(&vsi->rx_rings[i]->stats, 0,
 513                                sizeof(vsi->rx_rings[i]->stats));
 514                         memset(&vsi->rx_rings[i]->rx_stats, 0,
 515                                sizeof(vsi->rx_rings[i]->rx_stats));
 516                         memset(&vsi->tx_rings[i]->stats, 0,
 517                                sizeof(vsi->tx_rings[i]->stats));
 518                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 519                                sizeof(vsi->tx_rings[i]->tx_stats));
 520                 }
 521         }
 522         vsi->stat_offsets_loaded = false;
 523 }
 524
 525 /**
 526  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 527  * @pf: the PF to be reset
 528  **/
 529 void i40e_pf_reset_stats(struct i40e_pf *pf)
 530 {
 531         int i;
 532
 533         memset(&pf->stats, 0, sizeof(pf->stats));
 534         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 535         pf->stat_offsets_loaded = false;
 536
 537         for (i = 0; i < I40E_MAX_VEB; i++) {
 538                 if (pf->veb[i]) {
 539                         memset(&pf->veb[i]->stats, 0,
 540                                sizeof(pf->veb[i]->stats));
 541                         memset(&pf->veb[i]->stats_offsets, 0,
 542                                sizeof(pf->veb[i]->stats_offsets));
 543                         memset(&pf->veb[i]->tc_stats, 0,
 544                                sizeof(pf->veb[i]->tc_stats));
 545                         memset(&pf->veb[i]->tc_stats_offsets, 0,
 546                                sizeof(pf->veb[i]->tc_stats_offsets));
 547                         pf->veb[i]->stat_offsets_loaded = false;
 548                 }
 549         }
 550         pf->hw_csum_rx_error = 0;
 551 }
 552
 553 /**
 554  * i40e_compute_pci_to_hw_id - compute index form PCI function.
 555  * @vsi: ptr to the VSI to read from.
 556  * @hw: ptr to the hardware info.
 557  **/
 558 static u32 i40e_compute_pci_to_hw_id(struct i40e_vsi *vsi, struct i40e_hw *hw)
 559 {
 560         int pf_count = i40e_get_pf_count(hw);
 561
 562         if (vsi->type == I40E_VSI_SRIOV)
 563                 return (hw->port * BIT(7)) / pf_count + vsi->vf_id;
 564
 565         return hw->port + BIT(7);
 566 }
 567
 568 /**
 569  * i40e_stat_update64 - read and update a 64 bit stat from the chip.
 570  * @hw: ptr to the hardware info.
 571  * @hireg: the high 32 bit reg to read.
 572  * @loreg: the low 32 bit reg to read.
 573  * @offset_loaded: has the initial offset been loaded yet.
 574  * @offset: ptr to current offset value.
 575  * @stat: ptr to the stat.
 576  *
 577  * Since the device stats are not reset at PFReset, they will not
 578  * be zeroed when the driver starts.  We'll save the first values read
 579  * and use them as offsets to be subtracted from the raw values in order
 580  * to report stats that count from zero.
 581  **/
 582 static void i40e_stat_update64(struct i40e_hw *hw, u32 hireg, u32 loreg,
 583                                bool offset_loaded, u64 *offset, u64 *stat)
 584 {
 585         u64 new_data;
 586
 587         new_data = rd64(hw, loreg);
 588
 589         if (!offset_loaded || new_data < *offset)
 590                 *offset = new_data;
 591         *stat = new_data - *offset;
 592 }
 593
 594 /**
 595  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 596  * @hw: ptr to the hardware info
 597  * @hireg: the high 32 bit reg to read
 598  * @loreg: the low 32 bit reg to read
 599  * @offset_loaded: has the initial offset been loaded yet
 600  * @offset: ptr to current offset value
 601  * @stat: ptr to the stat
 602  *
 603  * Since the device stats are not reset at PFReset, they likely will not
 604  * be zeroed when the driver starts.  We'll save the first values read
 605  * and use them as offsets to be subtracted from the raw values in order
 606  * to report stats that count from zero.  In the process, we also manage
 607  * the potential roll-over.
 608  **/
 609 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 610                                bool offset_loaded, u64 *offset, u64 *stat)
 611 {
 612         u64 new_data;
 613
 614         if (hw->device_id == I40E_DEV_ID_QEMU) {
 615                 new_data = rd32(hw, loreg);
 616                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 617         } else {
 618                 new_data = rd64(hw, loreg);
 619         }
 620         if (!offset_loaded)
 621                 *offset = new_data;
 622         if (likely(new_data >= *offset))
 623                 *stat = new_data - *offset;
 624         else
 625                 *stat = (new_data + BIT_ULL(48)) - *offset;
 626         *stat &= 0xFFFFFFFFFFFFULL;
 627 }
 628
 629 /**
 630  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 631  * @hw: ptr to the hardware info
 632  * @reg: the hw reg to read
 633  * @offset_loaded: has the initial offset been loaded yet
 634  * @offset: ptr to current offset value
 635  * @stat: ptr to the stat
 636  **/
 637 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 638                                bool offset_loaded, u64 *offset, u64 *stat)
 639 {
 640         u32 new_data;
 641
 642         new_data = rd32(hw, reg);
 643         if (!offset_loaded)
 644                 *offset = new_data;
 645         if (likely(new_data >= *offset))
 646                 *stat = (u32)(new_data - *offset);
 647         else
 648                 *stat = (u32)((new_data + BIT_ULL(32)) - *offset);
 649 }
 650
 651 /**
 652  * i40e_stat_update_and_clear32 - read and clear hw reg, update a 32 bit stat
 653  * @hw: ptr to the hardware info
 654  * @reg: the hw reg to read and clear
 655  * @stat: ptr to the stat
 656  **/
 657 static void i40e_stat_update_and_clear32(struct i40e_hw *hw, u32 reg, u64 *stat)
 658 {
 659         u32 new_data = rd32(hw, reg);
 660
 661         wr32(hw, reg, 1); /* must write a nonzero value to clear register */
 662         *stat += new_data;
 663 }
 664
 665 /**
 666  * i40e_stats_update_rx_discards - update rx_discards.
 667  * @vsi: ptr to the VSI to be updated.
 668  * @hw: ptr to the hardware info.
 669  * @stat_idx: VSI's stat_counter_idx.
 670  * @offset_loaded: ptr to the VSI's stat_offsets_loaded.
 671  * @stat_offset: ptr to stat_offset to store first read of specific register.
 672  * @stat: ptr to VSI's stat to be updated.
 673  **/
 674 static void
 675 i40e_stats_update_rx_discards(struct i40e_vsi *vsi, struct i40e_hw *hw,
 676                               int stat_idx, bool offset_loaded,
 677                               struct i40e_eth_stats *stat_offset,
 678                               struct i40e_eth_stats *stat)
 679 {
 680         u64 rx_rdpc, rx_rxerr;
 681
 682         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx), offset_loaded,
 683                            &stat_offset->rx_discards, &rx_rdpc);
 684         i40e_stat_update64(hw,
 685                            I40E_GL_RXERR1H(i40e_compute_pci_to_hw_id(vsi, hw)),
 686                            I40E_GL_RXERR1L(i40e_compute_pci_to_hw_id(vsi, hw)),
 687                            offset_loaded, &stat_offset->rx_discards_other,
 688                            &rx_rxerr);
 689
 690         stat->rx_discards = rx_rdpc + rx_rxerr;
 691 }
 692
 693 /**
 694  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 695  * @vsi: the VSI to be updated
 696  **/
 697 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 698 {
 699         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 700         struct i40e_pf *pf = vsi->back;
 701         struct i40e_hw *hw = &pf->hw;
 702         struct i40e_eth_stats *oes;
 703         struct i40e_eth_stats *es;     /* device's eth stats */
 704
 705         es = &vsi->eth_stats;
 706         oes = &vsi->eth_stats_offsets;
 707
 708         /* Gather up the stats that the hw collects */
 709         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 710                            vsi->stat_offsets_loaded,
 711                            &oes->tx_errors, &es->tx_errors);
 712         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 713                            vsi->stat_offsets_loaded,
 714                            &oes->rx_discards, &es->rx_discards);
 715         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 716                            vsi->stat_offsets_loaded,
 717                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 718
 719         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 720                            I40E_GLV_GORCL(stat_idx),
 721                            vsi->stat_offsets_loaded,
 722                            &oes->rx_bytes, &es->rx_bytes);
 723         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 724                            I40E_GLV_UPRCL(stat_idx),
 725                            vsi->stat_offsets_loaded,
 726                            &oes->rx_unicast, &es->rx_unicast);
 727         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 728                            I40E_GLV_MPRCL(stat_idx),
 729                            vsi->stat_offsets_loaded,
 730                            &oes->rx_multicast, &es->rx_multicast);
 731         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 732                            I40E_GLV_BPRCL(stat_idx),
 733                            vsi->stat_offsets_loaded,
 734                            &oes->rx_broadcast, &es->rx_broadcast);
 735
 736         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 737                            I40E_GLV_GOTCL(stat_idx),
 738                            vsi->stat_offsets_loaded,
 739                            &oes->tx_bytes, &es->tx_bytes);
 740         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 741                            I40E_GLV_UPTCL(stat_idx),
 742                            vsi->stat_offsets_loaded,
 743                            &oes->tx_unicast, &es->tx_unicast);
 744         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 745                            I40E_GLV_MPTCL(stat_idx),
 746                            vsi->stat_offsets_loaded,
 747                            &oes->tx_multicast, &es->tx_multicast);
 748         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 749                            I40E_GLV_BPTCL(stat_idx),
 750                            vsi->stat_offsets_loaded,
 751                            &oes->tx_broadcast, &es->tx_broadcast);
 752
 753         i40e_stats_update_rx_discards(vsi, hw, stat_idx,
 754                                       vsi->stat_offsets_loaded, oes, es);
 755
 756         vsi->stat_offsets_loaded = true;
 757 }
 758
 759 /**
 760  * i40e_update_veb_stats - Update Switch component statistics
 761  * @veb: the VEB being updated
 762  **/
 763 void i40e_update_veb_stats(struct i40e_veb *veb)
 764 {
 765         struct i40e_pf *pf = veb->pf;
 766         struct i40e_hw *hw = &pf->hw;
 767         struct i40e_eth_stats *oes;
 768         struct i40e_eth_stats *es;     /* device's eth stats */
 769         struct i40e_veb_tc_stats *veb_oes;
 770         struct i40e_veb_tc_stats *veb_es;
 771         int i, idx = 0;
 772
 773         idx = veb->stats_idx;
 774         es = &veb->stats;
 775         oes = &veb->stats_offsets;
 776         veb_es = &veb->tc_stats;
 777         veb_oes = &veb->tc_stats_offsets;
 778
 779         /* Gather up the stats that the hw collects */
 780         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 781                            veb->stat_offsets_loaded,
 782                            &oes->tx_discards, &es->tx_discards);
 783         if (hw->revision_id > 0)
 784                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 785                                    veb->stat_offsets_loaded,
 786                                    &oes->rx_unknown_protocol,
 787                                    &es->rx_unknown_protocol);
 788         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 789                            veb->stat_offsets_loaded,
 790                            &oes->rx_bytes, &es->rx_bytes);
 791         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 792                            veb->stat_offsets_loaded,
 793                            &oes->rx_unicast, &es->rx_unicast);
 794         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 795                            veb->stat_offsets_loaded,
 796                            &oes->rx_multicast, &es->rx_multicast);
 797         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 798                            veb->stat_offsets_loaded,
 799                            &oes->rx_broadcast, &es->rx_broadcast);
 800
 801         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 802                            veb->stat_offsets_loaded,
 803                            &oes->tx_bytes, &es->tx_bytes);
 804         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 805                            veb->stat_offsets_loaded,
 806                            &oes->tx_unicast, &es->tx_unicast);
 807         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 808                            veb->stat_offsets_loaded,
 809                            &oes->tx_multicast, &es->tx_multicast);
 810         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 811                            veb->stat_offsets_loaded,
 812                            &oes->tx_broadcast, &es->tx_broadcast);
 813         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 814                 i40e_stat_update48(hw, I40E_GLVEBTC_RPCH(i, idx),
 815                                    I40E_GLVEBTC_RPCL(i, idx),
 816                                    veb->stat_offsets_loaded,
 817                                    &veb_oes->tc_rx_packets[i],
 818                                    &veb_es->tc_rx_packets[i]);
 819                 i40e_stat_update48(hw, I40E_GLVEBTC_RBCH(i, idx),
 820                                    I40E_GLVEBTC_RBCL(i, idx),
 821                                    veb->stat_offsets_loaded,
 822                                    &veb_oes->tc_rx_bytes[i],
 823                                    &veb_es->tc_rx_bytes[i]);
 824                 i40e_stat_update48(hw, I40E_GLVEBTC_TPCH(i, idx),
 825                                    I40E_GLVEBTC_TPCL(i, idx),
 826                                    veb->stat_offsets_loaded,
 827                                    &veb_oes->tc_tx_packets[i],
 828                                    &veb_es->tc_tx_packets[i]);
 829                 i40e_stat_update48(hw, I40E_GLVEBTC_TBCH(i, idx),
 830                                    I40E_GLVEBTC_TBCL(i, idx),
 831                                    veb->stat_offsets_loaded,
 832                                    &veb_oes->tc_tx_bytes[i],
 833                                    &veb_es->tc_tx_bytes[i]);
 834         }
 835         veb->stat_offsets_loaded = true;
 836 }
 837
 838 /**
 839  * i40e_update_vsi_stats - Update the vsi statistics counters.
 840  * @vsi: the VSI to be updated
 841  *
 842  * There are a few instances where we store the same stat in a
 843  * couple of different structs.  This is partly because we have
 844  * the netdev stats that need to be filled out, which is slightly
 845  * different from the "eth_stats" defined by the chip and used in
 846  * VF communications.  We sort it out here.
 847  **/
 848 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 849 {
 850         u64 rx_page, rx_buf, rx_reuse, rx_alloc, rx_waive, rx_busy;
 851         struct i40e_pf *pf = vsi->back;
 852         struct rtnl_link_stats64 *ons;
 853         struct rtnl_link_stats64 *ns;   /* netdev stats */
 854         struct i40e_eth_stats *oes;
 855         struct i40e_eth_stats *es;     /* device's eth stats */
 856         u64 tx_restart, tx_busy;
 857         struct i40e_ring *p;
 858         u64 bytes, packets;
 859         unsigned int start;
 860         u64 tx_linearize;
 861         u64 tx_force_wb;
 862         u64 tx_stopped;
 863         u64 rx_p, rx_b;
 864         u64 tx_p, tx_b;
 865         u16 q;
 866
 867         if (test_bit(__I40E_VSI_DOWN, vsi->state) ||
 868             test_bit(__I40E_CONFIG_BUSY, pf->state))
 869                 return;
 870
 871         ns = i40e_get_vsi_stats_struct(vsi);
 872         ons = &vsi->net_stats_offsets;
 873         es = &vsi->eth_stats;
 874         oes = &vsi->eth_stats_offsets;
 875
 876         /* Gather up the netdev and vsi stats that the driver collects
 877          * on the fly during packet processing
 878          */
 879         rx_b = rx_p = 0;
 880         tx_b = tx_p = 0;
 881         tx_restart = tx_busy = tx_linearize = tx_force_wb = 0;
 882         tx_stopped = 0;
 883         rx_page = 0;
 884         rx_buf = 0;
 885         rx_reuse = 0;
 886         rx_alloc = 0;
 887         rx_waive = 0;
 888         rx_busy = 0;
 889         rcu_read_lock();
 890         for (q = 0; q < vsi->num_queue_pairs; q++) {
 891                 /* locate Tx ring */
 892                 p = READ_ONCE(vsi->tx_rings[q]);
 893                 if (!p)
 894                         continue;
 895
 896                 do {
 897                         start = u64_stats_fetch_begin_irq(&p->syncp);
 898                         packets = p->stats.packets;
 899                         bytes = p->stats.bytes;
 900                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 901                 tx_b += bytes;
 902                 tx_p += packets;
 903                 tx_restart += p->tx_stats.restart_queue;
 904                 tx_busy += p->tx_stats.tx_busy;
 905                 tx_linearize += p->tx_stats.tx_linearize;
 906                 tx_force_wb += p->tx_stats.tx_force_wb;
 907                 tx_stopped += p->tx_stats.tx_stopped;
 908
 909                 /* locate Rx ring */
 910                 p = READ_ONCE(vsi->rx_rings[q]);
 911                 if (!p)
 912                         continue;
 913
 914                 do {
 915                         start = u64_stats_fetch_begin_irq(&p->syncp);
 916                         packets = p->stats.packets;
 917                         bytes = p->stats.bytes;
 918                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 919                 rx_b += bytes;
 920                 rx_p += packets;
 921                 rx_buf += p->rx_stats.alloc_buff_failed;
 922                 rx_page += p->rx_stats.alloc_page_failed;
 923                 rx_reuse += p->rx_stats.page_reuse_count;
 924                 rx_alloc += p->rx_stats.page_alloc_count;
 925                 rx_waive += p->rx_stats.page_waive_count;
 926                 rx_busy += p->rx_stats.page_busy_count;
 927
 928                 if (i40e_enabled_xdp_vsi(vsi)) {
 929                         /* locate XDP ring */
 930                         p = READ_ONCE(vsi->xdp_rings[q]);
 931                         if (!p)
 932                                 continue;
 933
 934                         do {
 935                                 start = u64_stats_fetch_begin_irq(&p->syncp);
 936                                 packets = p->stats.packets;
 937                                 bytes = p->stats.bytes;
 938                         } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 939                         tx_b += bytes;
 940                         tx_p += packets;
 941                         tx_restart += p->tx_stats.restart_queue;
 942                         tx_busy += p->tx_stats.tx_busy;
 943                         tx_linearize += p->tx_stats.tx_linearize;
 944                         tx_force_wb += p->tx_stats.tx_force_wb;
 945                 }
 946         }
 947         rcu_read_unlock();
 948         vsi->tx_restart = tx_restart;
 949         vsi->tx_busy = tx_busy;
 950         vsi->tx_linearize = tx_linearize;
 951         vsi->tx_force_wb = tx_force_wb;
 952         vsi->tx_stopped = tx_stopped;
 953         vsi->rx_page_failed = rx_page;
 954         vsi->rx_buf_failed = rx_buf;
 955         vsi->rx_page_reuse = rx_reuse;
 956         vsi->rx_page_alloc = rx_alloc;
 957         vsi->rx_page_waive = rx_waive;
 958         vsi->rx_page_busy = rx_busy;
 959
 960         ns->rx_packets = rx_p;
 961         ns->rx_bytes = rx_b;
 962         ns->tx_packets = tx_p;
 963         ns->tx_bytes = tx_b;
 964
 965         /* update netdev stats from eth stats */
 966         i40e_update_eth_stats(vsi);
 967         ons->tx_errors = oes->tx_errors;
 968         ns->tx_errors = es->tx_errors;
 969         ons->multicast = oes->rx_multicast;
 970         ns->multicast = es->rx_multicast;
 971         ons->rx_dropped = oes->rx_discards;
 972         ns->rx_dropped = es->rx_discards;
 973         ons->tx_dropped = oes->tx_discards;
 974         ns->tx_dropped = es->tx_discards;
 975
 976         /* pull in a couple PF stats if this is the main vsi */
 977         if (vsi == pf->vsi[pf->lan_vsi]) {
 978                 ns->rx_crc_errors = pf->stats.crc_errors;
 979                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 980                 ns->rx_length_errors = pf->stats.rx_length_errors;
 981         }
 982 }
 983
 984 /**
 985  * i40e_update_pf_stats - Update the PF statistics counters.
 986  * @pf: the PF to be updated
 987  **/
 988 static void i40e_update_pf_stats(struct i40e_pf *pf)
 989 {
 990         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 991         struct i40e_hw_port_stats *nsd = &pf->stats;
 992         struct i40e_hw *hw = &pf->hw;
 993         u32 val;
 994         int i;
 995
 996         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 997                            I40E_GLPRT_GORCL(hw->port),
 998                            pf->stat_offsets_loaded,
 999                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
1000         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
1001                            I40E_GLPRT_GOTCL(hw->port),
1002                            pf->stat_offsets_loaded,
1003                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
1004         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
1005                            pf->stat_offsets_loaded,
1006                            &osd->eth.rx_discards,
1007                            &nsd->eth.rx_discards);
1008         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
1009                            I40E_GLPRT_UPRCL(hw->port),
1010                            pf->stat_offsets_loaded,
1011                            &osd->eth.rx_unicast,
1012                            &nsd->eth.rx_unicast);
1013         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
1014                            I40E_GLPRT_MPRCL(hw->port),
1015                            pf->stat_offsets_loaded,
1016                            &osd->eth.rx_multicast,
1017                            &nsd->eth.rx_multicast);
1018         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
1019                            I40E_GLPRT_BPRCL(hw->port),
1020                            pf->stat_offsets_loaded,
1021                            &osd->eth.rx_broadcast,
1022                            &nsd->eth.rx_broadcast);
1023         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
1024                            I40E_GLPRT_UPTCL(hw->port),
1025                            pf->stat_offsets_loaded,
1026                            &osd->eth.tx_unicast,
1027                            &nsd->eth.tx_unicast);
1028         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
1029                            I40E_GLPRT_MPTCL(hw->port),
1030                            pf->stat_offsets_loaded,
1031                            &osd->eth.tx_multicast,
1032                            &nsd->eth.tx_multicast);
1033         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
1034                            I40E_GLPRT_BPTCL(hw->port),
1035                            pf->stat_offsets_loaded,
1036                            &osd->eth.tx_broadcast,
1037                            &nsd->eth.tx_broadcast);
1038
1039         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
1040                            pf->stat_offsets_loaded,
1041                            &osd->tx_dropped_link_down,
1042                            &nsd->tx_dropped_link_down);
1043
1044         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
1045                            pf->stat_offsets_loaded,
1046                            &osd->crc_errors, &nsd->crc_errors);
1047
1048         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
1049                            pf->stat_offsets_loaded,
1050                            &osd->illegal_bytes, &nsd->illegal_bytes);
1051
1052         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
1053                            pf->stat_offsets_loaded,
1054                            &osd->mac_local_faults,
1055                            &nsd->mac_local_faults);
1056         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
1057                            pf->stat_offsets_loaded,
1058                            &osd->mac_remote_faults,
1059                            &nsd->mac_remote_faults);
1060
1061         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
1062                            pf->stat_offsets_loaded,
1063                            &osd->rx_length_errors,
1064                            &nsd->rx_length_errors);
1065
1066         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
1067                            pf->stat_offsets_loaded,
1068                            &osd->link_xon_rx, &nsd->link_xon_rx);
1069         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
1070                            pf->stat_offsets_loaded,
1071                            &osd->link_xon_tx, &nsd->link_xon_tx);
1072         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
1073                            pf->stat_offsets_loaded,
1074                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
1075         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
1076                            pf->stat_offsets_loaded,
1077                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
1078
1079         for (i = 0; i < 8; i++) {
1080                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
1081                                    pf->stat_offsets_loaded,
1082                                    &osd->priority_xoff_rx[i],
1083                                    &nsd->priority_xoff_rx[i]);
1084                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
1085                                    pf->stat_offsets_loaded,
1086                                    &osd->priority_xon_rx[i],
1087                                    &nsd->priority_xon_rx[i]);
1088                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
1089                                    pf->stat_offsets_loaded,
1090                                    &osd->priority_xon_tx[i],
1091                                    &nsd->priority_xon_tx[i]);
1092                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1093                                    pf->stat_offsets_loaded,
1094                                    &osd->priority_xoff_tx[i],
1095                                    &nsd->priority_xoff_tx[i]);
1096                 i40e_stat_update32(hw,
1097                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1098                                    pf->stat_offsets_loaded,
1099                                    &osd->priority_xon_2_xoff[i],
1100                                    &nsd->priority_xon_2_xoff[i]);
1101         }
1102
1103         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1104                            I40E_GLPRT_PRC64L(hw->port),
1105                            pf->stat_offsets_loaded,
1106                            &osd->rx_size_64, &nsd->rx_size_64);
1107         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1108                            I40E_GLPRT_PRC127L(hw->port),
1109                            pf->stat_offsets_loaded,
1110                            &osd->rx_size_127, &nsd->rx_size_127);
1111         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1112                            I40E_GLPRT_PRC255L(hw->port),
1113                            pf->stat_offsets_loaded,
1114                            &osd->rx_size_255, &nsd->rx_size_255);
1115         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1116                            I40E_GLPRT_PRC511L(hw->port),
1117                            pf->stat_offsets_loaded,
1118                            &osd->rx_size_511, &nsd->rx_size_511);
1119         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1120                            I40E_GLPRT_PRC1023L(hw->port),
1121                            pf->stat_offsets_loaded,
1122                            &osd->rx_size_1023, &nsd->rx_size_1023);
1123         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1124                            I40E_GLPRT_PRC1522L(hw->port),
1125                            pf->stat_offsets_loaded,
1126                            &osd->rx_size_1522, &nsd->rx_size_1522);
1127         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1128                            I40E_GLPRT_PRC9522L(hw->port),
1129                            pf->stat_offsets_loaded,
1130                            &osd->rx_size_big, &nsd->rx_size_big);
1131
1132         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1133                            I40E_GLPRT_PTC64L(hw->port),
1134                            pf->stat_offsets_loaded,
1135                            &osd->tx_size_64, &nsd->tx_size_64);
1136         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1137                            I40E_GLPRT_PTC127L(hw->port),
1138                            pf->stat_offsets_loaded,
1139                            &osd->tx_size_127, &nsd->tx_size_127);
1140         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1141                            I40E_GLPRT_PTC255L(hw->port),
1142                            pf->stat_offsets_loaded,
1143                            &osd->tx_size_255, &nsd->tx_size_255);
1144         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1145                            I40E_GLPRT_PTC511L(hw->port),
1146                            pf->stat_offsets_loaded,
1147                            &osd->tx_size_511, &nsd->tx_size_511);
1148         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1149                            I40E_GLPRT_PTC1023L(hw->port),
1150                            pf->stat_offsets_loaded,
1151                            &osd->tx_size_1023, &nsd->tx_size_1023);
1152         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1153                            I40E_GLPRT_PTC1522L(hw->port),
1154                            pf->stat_offsets_loaded,
1155                            &osd->tx_size_1522, &nsd->tx_size_1522);
1156         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1157                            I40E_GLPRT_PTC9522L(hw->port),
1158                            pf->stat_offsets_loaded,
1159                            &osd->tx_size_big, &nsd->tx_size_big);
1160
1161         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1162                            pf->stat_offsets_loaded,
1163                            &osd->rx_undersize, &nsd->rx_undersize);
1164         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1165                            pf->stat_offsets_loaded,
1166                            &osd->rx_fragments, &nsd->rx_fragments);
1167         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1168                            pf->stat_offsets_loaded,
1169                            &osd->rx_oversize, &nsd->rx_oversize);
1170         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1171                            pf->stat_offsets_loaded,
1172                            &osd->rx_jabber, &nsd->rx_jabber);
1173
1174         /* FDIR stats */
1175         i40e_stat_update_and_clear32(hw,
1176                         I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(hw->pf_id)),
1177                         &nsd->fd_atr_match);
1178         i40e_stat_update_and_clear32(hw,
1179                         I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(hw->pf_id)),
1180                         &nsd->fd_sb_match);
1181         i40e_stat_update_and_clear32(hw,
1182                         I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(hw->pf_id)),
1183                         &nsd->fd_atr_tunnel_match);
1184
1185         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1186         nsd->tx_lpi_status =
1187                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1188                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1189         nsd->rx_lpi_status =
1190                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1191                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1192         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1193                            pf->stat_offsets_loaded,
1194                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1195         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1196                            pf->stat_offsets_loaded,
1197                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1198
1199         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1200             !test_bit(__I40E_FD_SB_AUTO_DISABLED, pf->state))
1201                 nsd->fd_sb_status = true;
1202         else
1203                 nsd->fd_sb_status = false;
1204
1205         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1206             !test_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state))
1207                 nsd->fd_atr_status = true;
1208         else
1209                 nsd->fd_atr_status = false;
1210
1211         pf->stat_offsets_loaded = true;
1212 }
1213
1214 /**
1215  * i40e_update_stats - Update the various statistics counters.
1216  * @vsi: the VSI to be updated
1217  *
1218  * Update the various stats for this VSI and its related entities.
1219  **/
1220 void i40e_update_stats(struct i40e_vsi *vsi)
1221 {
1222         struct i40e_pf *pf = vsi->back;
1223
1224         if (vsi == pf->vsi[pf->lan_vsi])
1225                 i40e_update_pf_stats(pf);
1226
1227         i40e_update_vsi_stats(vsi);
1228 }
1229
1230 /**
1231  * i40e_count_filters - counts VSI mac filters
1232  * @vsi: the VSI to be searched
1233  *
1234  * Returns count of mac filters
1235  **/
1236 int i40e_count_filters(struct i40e_vsi *vsi)
1237 {
1238         struct i40e_mac_filter *f;
1239         struct hlist_node *h;
1240         int bkt;
1241         int cnt = 0;
1242
1243         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist)
1244                 ++cnt;
1245
1246         return cnt;
1247 }
1248
1249 /**
1250  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1251  * @vsi: the VSI to be searched
1252  * @macaddr: the MAC address
1253  * @vlan: the vlan
1254  *
1255  * Returns ptr to the filter object or NULL
1256  **/
1257 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1258                                                 const u8 *macaddr, s16 vlan)
1259 {
1260         struct i40e_mac_filter *f;
1261         u64 key;
1262
1263         if (!vsi || !macaddr)
1264                 return NULL;
1265
1266         key = i40e_addr_to_hkey(macaddr);
1267         hash_for_each_possible(vsi->mac_filter_hash, f, hlist, key) {
1268                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1269                     (vlan == f->vlan))
1270                         return f;
1271         }
1272         return NULL;
1273 }
1274
1275 /**
1276  * i40e_find_mac - Find a mac addr in the macvlan filters list
1277  * @vsi: the VSI to be searched
1278  * @macaddr: the MAC address we are searching for
1279  *
1280  * Returns the first filter with the provided MAC address or NULL if
1281  * MAC address was not found
1282  **/
1283 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, const u8 *macaddr)
1284 {
1285         struct i40e_mac_filter *f;
1286         u64 key;
1287
1288         if (!vsi || !macaddr)
1289                 return NULL;
1290
1291         key = i40e_addr_to_hkey(macaddr);
1292         hash_for_each_possible(vsi->mac_filter_hash, f, hlist, key) {
1293                 if ((ether_addr_equal(macaddr, f->macaddr)))
1294                         return f;
1295         }
1296         return NULL;
1297 }
1298
1299 /**
1300  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1301  * @vsi: the VSI to be searched
1302  *
1303  * Returns true if VSI is in vlan mode or false otherwise
1304  **/
1305 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1306 {
1307         /* If we have a PVID, always operate in VLAN mode */
1308         if (vsi->info.pvid)
1309                 return true;
1310
1311         /* We need to operate in VLAN mode whenever we have any filters with
1312          * a VLAN other than I40E_VLAN_ALL. We could check the table each
1313          * time, incurring search cost repeatedly. However, we can notice two
1314          * things:
1315          *
1316          * 1) the only place where we can gain a VLAN filter is in
1317          *    i40e_add_filter.
1318          *
1319          * 2) the only place where filters are actually removed is in
1320          *    i40e_sync_filters_subtask.
1321          *
1322          * Thus, we can simply use a boolean value, has_vlan_filters which we
1323          * will set to true when we add a VLAN filter in i40e_add_filter. Then
1324          * we have to perform the full search after deleting filters in
1325          * i40e_sync_filters_subtask, but we already have to search
1326          * filters here and can perform the check at the same time. This
1327          * results in avoiding embedding a loop for VLAN mode inside another
1328          * loop over all the filters, and should maintain correctness as noted
1329          * above.
1330          */
1331         return vsi->has_vlan_filter;
1332 }
1333
1334 /**
1335  * i40e_correct_mac_vlan_filters - Correct non-VLAN filters if necessary
1336  * @vsi: the VSI to configure
1337  * @tmp_add_list: list of filters ready to be added
1338  * @tmp_del_list: list of filters ready to be deleted
1339  * @vlan_filters: the number of active VLAN filters
1340  *
1341  * Update VLAN=0 and VLAN=-1 (I40E_VLAN_ANY) filters properly so that they
1342  * behave as expected. If we have any active VLAN filters remaining or about
1343  * to be added then we need to update non-VLAN filters to be marked as VLAN=0
1344  * so that they only match against untagged traffic. If we no longer have any
1345  * active VLAN filters, we need to make all non-VLAN filters marked as VLAN=-1
1346  * so that they match against both tagged and untagged traffic. In this way,
1347  * we ensure that we correctly receive the desired traffic. This ensures that
1348  * when we have an active VLAN we will receive only untagged traffic and
1349  * traffic matching active VLANs. If we have no active VLANs then we will
1350  * operate in non-VLAN mode and receive all traffic, tagged or untagged.
1351  *
1352  * Finally, in a similar fashion, this function also corrects filters when
1353  * there is an active PVID assigned to this VSI.
1354  *
1355  * In case of memory allocation failure return -ENOMEM. Otherwise, return 0.
1356  *
1357  * This function is only expected to be called from within
1358  * i40e_sync_vsi_filters.
1359  *
1360  * NOTE: This function expects to be called while under the
1361  * mac_filter_hash_lock
1362  */
1363 static int i40e_correct_mac_vlan_filters(struct i40e_vsi *vsi,
1364                                          struct hlist_head *tmp_add_list,
1365                                          struct hlist_head *tmp_del_list,
1366                                          int vlan_filters)
1367 {
1368         s16 pvid = le16_to_cpu(vsi->info.pvid);
1369         struct i40e_mac_filter *f, *add_head;
1370         struct i40e_new_mac_filter *new;
1371         struct hlist_node *h;
1372         int bkt, new_vlan;
1373
1374         /* To determine if a particular filter needs to be replaced we
1375          * have the three following conditions:
1376          *
1377          * a) if we have a PVID assigned, then all filters which are
1378          *    not marked as VLAN=PVID must be replaced with filters that
1379          *    are.
1380          * b) otherwise, if we have any active VLANS, all filters
1381          *    which are marked as VLAN=-1 must be replaced with
1382          *    filters marked as VLAN=0
1383          * c) finally, if we do not have any active VLANS, all filters
1384          *    which are marked as VLAN=0 must be replaced with filters
1385          *    marked as VLAN=-1
1386          */
1387
1388         /* Update the filters about to be added in place */
1389         hlist_for_each_entry(new, tmp_add_list, hlist) {
1390                 if (pvid && new->f->vlan != pvid)
1391                         new->f->vlan = pvid;
1392                 else if (vlan_filters && new->f->vlan == I40E_VLAN_ANY)
1393                         new->f->vlan = 0;
1394                 else if (!vlan_filters && new->f->vlan == 0)
1395                         new->f->vlan = I40E_VLAN_ANY;
1396         }
1397
1398         /* Update the remaining active filters */
1399         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
1400                 /* Combine the checks for whether a filter needs to be changed
1401                  * and then determine the new VLAN inside the if block, in
1402                  * order to avoid duplicating code for adding the new filter
1403                  * then deleting the old filter.
1404                  */
1405                 if ((pvid && f->vlan != pvid) ||
1406                     (vlan_filters && f->vlan == I40E_VLAN_ANY) ||
1407                     (!vlan_filters && f->vlan == 0)) {
1408                         /* Determine the new vlan we will be adding */
1409                         if (pvid)
1410                                 new_vlan = pvid;
1411                         else if (vlan_filters)
1412                                 new_vlan = 0;
1413                         else
1414                                 new_vlan = I40E_VLAN_ANY;
1415
1416                         /* Create the new filter */
1417                         add_head = i40e_add_filter(vsi, f->macaddr, new_vlan);
1418                         if (!add_head)
1419                                 return -ENOMEM;
1420
1421                         /* Create a temporary i40e_new_mac_filter */
1422                         new = kzalloc(sizeof(*new), GFP_ATOMIC);
1423                         if (!new)
1424                                 return -ENOMEM;
1425
1426                         new->f = add_head;
1427                         new->state = add_head->state;
1428
1429                         /* Add the new filter to the tmp list */
1430                         hlist_add_head(&new->hlist, tmp_add_list);
1431
1432                         /* Put the original filter into the delete list */
1433                         f->state = I40E_FILTER_REMOVE;
1434                         hash_del(&f->hlist);
1435                         hlist_add_head(&f->hlist, tmp_del_list);
1436                 }
1437         }
1438
1439         vsi->has_vlan_filter = !!vlan_filters;
1440
1441         return 0;
1442 }
1443
1444 /**
1445  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1446  * @vsi: the PF Main VSI - inappropriate for any other VSI
1447  * @macaddr: the MAC address
1448  *
1449  * Remove whatever filter the firmware set up so the driver can manage
1450  * its own filtering intelligently.
1451  **/
1452 static void i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1453 {
1454         struct i40e_aqc_remove_macvlan_element_data element;
1455         struct i40e_pf *pf = vsi->back;
1456
1457         /* Only appropriate for the PF main VSI */
1458         if (vsi->type != I40E_VSI_MAIN)
1459                 return;
1460
1461         memset(&element, 0, sizeof(element));
1462         ether_addr_copy(element.mac_addr, macaddr);
1463         element.vlan_tag = 0;
1464         /* Ignore error returns, some firmware does it this way... */
1465         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1466         i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1467
1468         memset(&element, 0, sizeof(element));
1469         ether_addr_copy(element.mac_addr, macaddr);
1470         element.vlan_tag = 0;
1471         /* ...and some firmware does it this way. */
1472         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1473                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1474         i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1475 }
1476
1477 /**
1478  * i40e_add_filter - Add a mac/vlan filter to the VSI
1479  * @vsi: the VSI to be searched
1480  * @macaddr: the MAC address
1481  * @vlan: the vlan
1482  *
1483  * Returns ptr to the filter object or NULL when no memory available.
1484  *
1485  * NOTE: This function is expected to be called with mac_filter_hash_lock
1486  * being held.
1487  **/
1488 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1489                                         const u8 *macaddr, s16 vlan)
1490 {
1491         struct i40e_mac_filter *f;
1492         u64 key;
1493
1494         if (!vsi || !macaddr)
1495                 return NULL;
1496
1497         f = i40e_find_filter(vsi, macaddr, vlan);
1498         if (!f) {
1499                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1500                 if (!f)
1501                         return NULL;
1502
1503                 /* Update the boolean indicating if we need to function in
1504                  * VLAN mode.
1505                  */
1506                 if (vlan >= 0)
1507                         vsi->has_vlan_filter = true;
1508
1509                 ether_addr_copy(f->macaddr, macaddr);
1510                 f->vlan = vlan;
1511                 f->state = I40E_FILTER_NEW;
1512                 INIT_HLIST_NODE(&f->hlist);
1513
1514                 key = i40e_addr_to_hkey(macaddr);
1515                 hash_add(vsi->mac_filter_hash, &f->hlist, key);
1516
1517                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1518                 set_bit(__I40E_MACVLAN_SYNC_PENDING, vsi->back->state);
1519         }
1520
1521         /* If we're asked to add a filter that has been marked for removal, it
1522          * is safe to simply restore it to active state. __i40e_del_filter
1523          * will have simply deleted any filters which were previously marked
1524          * NEW or FAILED, so if it is currently marked REMOVE it must have
1525          * previously been ACTIVE. Since we haven't yet run the sync filters
1526          * task, just restore this filter to the ACTIVE state so that the
1527          * sync task leaves it in place
1528          */
1529         if (f->state == I40E_FILTER_REMOVE)
1530                 f->state = I40E_FILTER_ACTIVE;
1531
1532         return f;
1533 }
1534
1535 /**
1536  * __i40e_del_filter - Remove a specific filter from the VSI
1537  * @vsi: VSI to remove from
1538  * @f: the filter to remove from the list
1539  *
1540  * This function should be called instead of i40e_del_filter only if you know
1541  * the exact filter you will remove already, such as via i40e_find_filter or
1542  * i40e_find_mac.
1543  *
1544  * NOTE: This function is expected to be called with mac_filter_hash_lock
1545  * being held.
1546  * ANOTHER NOTE: This function MUST be called from within the context of
1547  * the "safe" variants of any list iterators, e.g. list_for_each_entry_safe()
1548  * instead of list_for_each_entry().
1549  **/
1550 void __i40e_del_filter(struct i40e_vsi *vsi, struct i40e_mac_filter *f)
1551 {
1552         if (!f)
1553                 return;
1554
1555         /* If the filter was never added to firmware then we can just delete it
1556          * directly and we don't want to set the status to remove or else an
1557          * admin queue command will unnecessarily fire.
1558          */
1559         if ((f->state == I40E_FILTER_FAILED) ||
1560             (f->state == I40E_FILTER_NEW)) {
1561                 hash_del(&f->hlist);
1562                 kfree(f);
1563         } else {
1564                 f->state = I40E_FILTER_REMOVE;
1565         }
1566
1567         vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1568         set_bit(__I40E_MACVLAN_SYNC_PENDING, vsi->back->state);
1569 }
1570
1571 /**
1572  * i40e_del_filter - Remove a MAC/VLAN filter from the VSI
1573  * @vsi: the VSI to be searched
1574  * @macaddr: the MAC address
1575  * @vlan: the VLAN
1576  *
1577  * NOTE: This function is expected to be called with mac_filter_hash_lock
1578  * being held.
1579  * ANOTHER NOTE: This function MUST be called from within the context of
1580  * the "safe" variants of any list iterators, e.g. list_for_each_entry_safe()
1581  * instead of list_for_each_entry().
1582  **/
1583 void i40e_del_filter(struct i40e_vsi *vsi, const u8 *macaddr, s16 vlan)
1584 {
1585         struct i40e_mac_filter *f;
1586
1587         if (!vsi || !macaddr)
1588                 return;
1589
1590         f = i40e_find_filter(vsi, macaddr, vlan);
1591         __i40e_del_filter(vsi, f);
1592 }
1593
1594 /**
1595  * i40e_add_mac_filter - Add a MAC filter for all active VLANs
1596  * @vsi: the VSI to be searched
1597  * @macaddr: the mac address to be filtered
1598  *
1599  * If we're not in VLAN mode, just add the filter to I40E_VLAN_ANY. Otherwise,
1600  * go through all the macvlan filters and add a macvlan filter for each
1601  * unique vlan that already exists. If a PVID has been assigned, instead only
1602  * add the macaddr to that VLAN.
1603  *
1604  * Returns last filter added on success, else NULL
1605  **/
1606 struct i40e_mac_filter *i40e_add_mac_filter(struct i40e_vsi *vsi,
1607                                             const u8 *macaddr)
1608 {
1609         struct i40e_mac_filter *f, *add = NULL;
1610         struct hlist_node *h;
1611         int bkt;
1612
1613         if (vsi->info.pvid)
1614                 return i40e_add_filter(vsi, macaddr,
1615                                        le16_to_cpu(vsi->info.pvid));
1616
1617         if (!i40e_is_vsi_in_vlan(vsi))
1618                 return i40e_add_filter(vsi, macaddr, I40E_VLAN_ANY);
1619
1620         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
1621                 if (f->state == I40E_FILTER_REMOVE)
1622                         continue;
1623                 add = i40e_add_filter(vsi, macaddr, f->vlan);
1624                 if (!add)
1625                         return NULL;
1626         }
1627
1628         return add;
1629 }
1630
1631 /**
1632  * i40e_del_mac_filter - Remove a MAC filter from all VLANs
1633  * @vsi: the VSI to be searched
1634  * @macaddr: the mac address to be removed
1635  *
1636  * Removes a given MAC address from a VSI regardless of what VLAN it has been
1637  * associated with.
1638  *
1639  * Returns 0 for success, or error
1640  **/
1641 int i40e_del_mac_filter(struct i40e_vsi *vsi, const u8 *macaddr)
1642 {
1643         struct i40e_mac_filter *f;
1644         struct hlist_node *h;
1645         bool found = false;
1646         int bkt;
1647
1648         lockdep_assert_held(&vsi->mac_filter_hash_lock);
1649         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
1650                 if (ether_addr_equal(macaddr, f->macaddr)) {
1651                         __i40e_del_filter(vsi, f);
1652                         found = true;
1653                 }
1654         }
1655
1656         if (found)
1657                 return 0;
1658         else
1659                 return -ENOENT;
1660 }
1661
1662 /**
1663  * i40e_set_mac - NDO callback to set mac address
1664  * @netdev: network interface device structure
1665  * @p: pointer to an address structure
1666  *
1667  * Returns 0 on success, negative on failure
1668  **/
1669 static int i40e_set_mac(struct net_device *netdev, void *p)
1670 {
1671         struct i40e_netdev_priv *np = netdev_priv(netdev);
1672         struct i40e_vsi *vsi = np->vsi;
1673         struct i40e_pf *pf = vsi->back;
1674         struct i40e_hw *hw = &pf->hw;
1675         struct sockaddr *addr = p;
1676
1677         if (!is_valid_ether_addr(addr->sa_data))
1678                 return -EADDRNOTAVAIL;
1679
1680         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1681                 netdev_info(netdev, "already using mac address %pM\n",
1682                             addr->sa_data);
1683                 return 0;
1684         }
1685
1686         if (test_bit(__I40E_DOWN, pf->state) ||
1687             test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state))
1688                 return -EADDRNOTAVAIL;
1689
1690         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1691                 netdev_info(netdev, "returning to hw mac address %pM\n",
1692                             hw->mac.addr);
1693         else
1694                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1695
1696         /* Copy the address first, so that we avoid a possible race with
1697          * .set_rx_mode().
1698          * - Remove old address from MAC filter
1699          * - Copy new address
1700          * - Add new address to MAC filter
1701          */
1702         spin_lock_bh(&vsi->mac_filter_hash_lock);
1703         i40e_del_mac_filter(vsi, netdev->dev_addr);
1704         eth_hw_addr_set(netdev, addr->sa_data);
1705         i40e_add_mac_filter(vsi, netdev->dev_addr);
1706         spin_unlock_bh(&vsi->mac_filter_hash_lock);
1707
1708         if (vsi->type == I40E_VSI_MAIN) {
1709                 i40e_status ret;
1710
1711                 ret = i40e_aq_mac_address_write(hw, I40E_AQC_WRITE_TYPE_LAA_WOL,
1712                                                 addr->sa_data, NULL);
1713                 if (ret)
1714                         netdev_info(netdev, "Ignoring error from firmware on LAA update, status %s, AQ ret %s\n",
1715                                     i40e_stat_str(hw, ret),
1716                                     i40e_aq_str(hw, hw->aq.asq_last_status));
1717         }
1718
1719         /* schedule our worker thread which will take care of
1720          * applying the new filter changes
1721          */
1722         i40e_service_event_schedule(pf);
1723         return 0;
1724 }
1725
1726 /**
1727  * i40e_config_rss_aq - Prepare for RSS using AQ commands
1728  * @vsi: vsi structure
1729  * @seed: RSS hash seed
1730  * @lut: pointer to lookup table of lut_size
1731  * @lut_size: size of the lookup table
1732  **/
1733 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
1734                               u8 *lut, u16 lut_size)
1735 {
1736         struct i40e_pf *pf = vsi->back;
1737         struct i40e_hw *hw = &pf->hw;
1738         int ret = 0;
1739
1740         if (seed) {
1741                 struct i40e_aqc_get_set_rss_key_data *seed_dw =
1742                         (struct i40e_aqc_get_set_rss_key_data *)seed;
1743                 ret = i40e_aq_set_rss_key(hw, vsi->id, seed_dw);
1744                 if (ret) {
1745                         dev_info(&pf->pdev->dev,
1746                                  "Cannot set RSS key, err %s aq_err %s\n",
1747                                  i40e_stat_str(hw, ret),
1748                                  i40e_aq_str(hw, hw->aq.asq_last_status));
1749                         return ret;
1750                 }
1751         }
1752         if (lut) {
1753                 bool pf_lut = vsi->type == I40E_VSI_MAIN;
1754
1755                 ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
1756                 if (ret) {
1757                         dev_info(&pf->pdev->dev,
1758                                  "Cannot set RSS lut, err %s aq_err %s\n",
1759                                  i40e_stat_str(hw, ret),
1760                                  i40e_aq_str(hw, hw->aq.asq_last_status));
1761                         return ret;
1762                 }
1763         }
1764         return ret;
1765 }
1766
1767 /**
1768  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
1769  * @vsi: VSI structure
1770  **/
1771 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
1772 {
1773         struct i40e_pf *pf = vsi->back;
1774         u8 seed[I40E_HKEY_ARRAY_SIZE];
1775         u8 *lut;
1776         int ret;
1777
1778         if (!(pf->hw_features & I40E_HW_RSS_AQ_CAPABLE))
1779                 return 0;
1780         if (!vsi->rss_size)
1781                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
1782                                       vsi->num_queue_pairs);
1783         if (!vsi->rss_size)
1784                 return -EINVAL;
1785         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
1786         if (!lut)
1787                 return -ENOMEM;
1788
1789         /* Use the user configured hash keys and lookup table if there is one,
1790          * otherwise use default
1791          */
1792         if (vsi->rss_lut_user)
1793                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
1794         else
1795                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
1796         if (vsi->rss_hkey_user)
1797                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
1798         else
1799                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
1800         ret = i40e_config_rss_aq(vsi, seed, lut, vsi->rss_table_size);
1801         kfree(lut);
1802         return ret;
1803 }
1804
1805 /**
1806  * i40e_vsi_setup_queue_map_mqprio - Prepares mqprio based tc_config
1807  * @vsi: the VSI being configured,
1808  * @ctxt: VSI context structure
1809  * @enabled_tc: number of traffic classes to enable
1810  *
1811  * Prepares VSI tc_config to have queue configurations based on MQPRIO options.
1812  **/
1813 static int i40e_vsi_setup_queue_map_mqprio(struct i40e_vsi *vsi,
1814                                            struct i40e_vsi_context *ctxt,
1815                                            u8 enabled_tc)
1816 {
1817         u16 qcount = 0, max_qcount, qmap, sections = 0;
1818         int i, override_q, pow, num_qps, ret;
1819         u8 netdev_tc = 0, offset = 0;
1820
1821         if (vsi->type != I40E_VSI_MAIN)
1822                 return -EINVAL;
1823         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1824         sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1825         vsi->tc_config.numtc = vsi->mqprio_qopt.qopt.num_tc;
1826         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1827         num_qps = vsi->mqprio_qopt.qopt.count[0];
1828
1829         /* find the next higher power-of-2 of num queue pairs */
1830         pow = ilog2(num_qps);
1831         if (!is_power_of_2(num_qps))
1832                 pow++;
1833         qmap = (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1834                 (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1835
1836         /* Setup queue offset/count for all TCs for given VSI */
1837         max_qcount = vsi->mqprio_qopt.qopt.count[0];
1838         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1839                 /* See if the given TC is enabled for the given VSI */
1840                 if (vsi->tc_config.enabled_tc & BIT(i)) {
1841                         offset = vsi->mqprio_qopt.qopt.offset[i];
1842                         qcount = vsi->mqprio_qopt.qopt.count[i];
1843                         if (qcount > max_qcount)
1844                                 max_qcount = qcount;
1845                         vsi->tc_config.tc_info[i].qoffset = offset;
1846                         vsi->tc_config.tc_info[i].qcount = qcount;
1847                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1848                 } else {
1849                         /* TC is not enabled so set the offset to
1850                          * default queue and allocate one queue
1851                          * for the given TC.
1852                          */
1853                         vsi->tc_config.tc_info[i].qoffset = 0;
1854                         vsi->tc_config.tc_info[i].qcount = 1;
1855                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1856                 }
1857         }
1858
1859         /* Set actual Tx/Rx queue pairs */
1860         vsi->num_queue_pairs = offset + qcount;
1861
1862         /* Setup queue TC[0].qmap for given VSI context */
1863         ctxt->info.tc_mapping[0] = cpu_to_le16(qmap);
1864         ctxt->info.mapping_flags |= cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1865         ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1866         ctxt->info.valid_sections |= cpu_to_le16(sections);
1867
1868         /* Reconfigure RSS for main VSI with max queue count */
1869         vsi->rss_size = max_qcount;
1870         ret = i40e_vsi_config_rss(vsi);
1871         if (ret) {
1872                 dev_info(&vsi->back->pdev->dev,
1873                          "Failed to reconfig rss for num_queues (%u)\n",
1874                          max_qcount);
1875                 return ret;
1876         }
1877         vsi->reconfig_rss = true;
1878         dev_dbg(&vsi->back->pdev->dev,
1879                 "Reconfigured rss with num_queues (%u)\n", max_qcount);
1880
1881         /* Find queue count available for channel VSIs and starting offset
1882          * for channel VSIs
1883          */
1884         override_q = vsi->mqprio_qopt.qopt.count[0];
1885         if (override_q && override_q < vsi->num_queue_pairs) {
1886                 vsi->cnt_q_avail = vsi->num_queue_pairs - override_q;
1887                 vsi->next_base_queue = override_q;
1888         }
1889         return 0;
1890 }
1891
1892 /**
1893  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1894  * @vsi: the VSI being setup
1895  * @ctxt: VSI context structure
1896  * @enabled_tc: Enabled TCs bitmap
1897  * @is_add: True if called before Add VSI
1898  *
1899  * Setup VSI queue mapping for enabled traffic classes.
1900  **/
1901 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1902                                      struct i40e_vsi_context *ctxt,
1903                                      u8 enabled_tc,
1904                                      bool is_add)
1905 {
1906         struct i40e_pf *pf = vsi->back;
1907         u16 num_tc_qps = 0;
1908         u16 sections = 0;
1909         u8 netdev_tc = 0;
1910         u16 numtc = 1;
1911         u16 qcount;
1912         u8 offset;
1913         u16 qmap;
1914         int i;
1915
1916         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1917         offset = 0;
1918         /* zero out queue mapping, it will get updated on the end of the function */
1919         memset(ctxt->info.queue_mapping, 0, sizeof(ctxt->info.queue_mapping));
1920
1921         if (vsi->type == I40E_VSI_MAIN) {
1922                 /* This code helps add more queue to the VSI if we have
1923                  * more cores than RSS can support, the higher cores will
1924                  * be served by ATR or other filters. Furthermore, the
1925                  * non-zero req_queue_pairs says that user requested a new
1926                  * queue count via ethtool's set_channels, so use this
1927                  * value for queues distribution across traffic classes
1928                  * We need at least one queue pair for the interface
1929                  * to be usable as we see in else statement.
1930                  */
1931                 if (vsi->req_queue_pairs > 0)
1932                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1933                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1934                         vsi->num_queue_pairs = pf->num_lan_msix;
1935                 else
1936                         vsi->num_queue_pairs = 1;
1937         }
1938
1939         /* Number of queues per enabled TC */
1940         if (vsi->type == I40E_VSI_MAIN ||
1941             (vsi->type == I40E_VSI_SRIOV && vsi->num_queue_pairs != 0))
1942                 num_tc_qps = vsi->num_queue_pairs;
1943         else
1944                 num_tc_qps = vsi->alloc_queue_pairs;
1945
1946         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1947                 /* Find numtc from enabled TC bitmap */
1948                 for (i = 0, numtc = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1949                         if (enabled_tc & BIT(i)) /* TC is enabled */
1950                                 numtc++;
1951                 }
1952                 if (!numtc) {
1953                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1954                         numtc = 1;
1955                 }
1956                 num_tc_qps = num_tc_qps / numtc;
1957                 num_tc_qps = min_t(int, num_tc_qps,
1958                                    i40e_pf_get_max_q_per_tc(pf));
1959         }
1960
1961         vsi->tc_config.numtc = numtc;
1962         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1963
1964         /* Do not allow use more TC queue pairs than MSI-X vectors exist */
1965         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1966                 num_tc_qps = min_t(int, num_tc_qps, pf->num_lan_msix);
1967
1968         /* Setup queue offset/count for all TCs for given VSI */
1969         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1970                 /* See if the given TC is enabled for the given VSI */
1971                 if (vsi->tc_config.enabled_tc & BIT(i)) {
1972                         /* TC is enabled */
1973                         int pow, num_qps;
1974
1975                         switch (vsi->type) {
1976                         case I40E_VSI_MAIN:
1977                                 if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED |
1978                                     I40E_FLAG_FD_ATR_ENABLED)) ||
1979                                     vsi->tc_config.enabled_tc != 1) {
1980                                         qcount = min_t(int, pf->alloc_rss_size,
1981                                                        num_tc_qps);
1982                                         break;
1983                                 }
1984                                 fallthrough;
1985                         case I40E_VSI_FDIR:
1986                         case I40E_VSI_SRIOV:
1987                         case I40E_VSI_VMDQ2:
1988                         default:
1989                                 qcount = num_tc_qps;
1990                                 WARN_ON(i != 0);
1991                                 break;
1992                         }
1993                         vsi->tc_config.tc_info[i].qoffset = offset;
1994                         vsi->tc_config.tc_info[i].qcount = qcount;
1995
1996                         /* find the next higher power-of-2 of num queue pairs */
1997                         num_qps = qcount;
1998                         pow = 0;
1999                         while (num_qps && (BIT_ULL(pow) < qcount)) {
2000                                 pow++;
2001                                 num_qps >>= 1;
2002                         }
2003
2004                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
2005                         qmap =
2006                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
2007                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
2008
2009                         offset += qcount;
2010                 } else {
2011                         /* TC is not enabled so set the offset to
2012                          * default queue and allocate one queue
2013                          * for the given TC.
2014                          */
2015                         vsi->tc_config.tc_info[i].qoffset = 0;
2016                         vsi->tc_config.tc_info[i].qcount = 1;
2017                         vsi->tc_config.tc_info[i].netdev_tc = 0;
2018
2019                         qmap = 0;
2020                 }
2021                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
2022         }
2023         /* Do not change previously set num_queue_pairs for PFs and VFs*/
2024         if ((vsi->type == I40E_VSI_MAIN && numtc != 1) ||
2025             (vsi->type == I40E_VSI_SRIOV && vsi->num_queue_pairs == 0) ||
2026             (vsi->type != I40E_VSI_MAIN && vsi->type != I40E_VSI_SRIOV))
2027                 vsi->num_queue_pairs = offset;
2028
2029         /* Scheduler section valid can only be set for ADD VSI */
2030         if (is_add) {
2031                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
2032
2033                 ctxt->info.up_enable_bits = enabled_tc;
2034         }
2035         if (vsi->type == I40E_VSI_SRIOV) {
2036                 ctxt->info.mapping_flags |=
2037                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
2038                 for (i = 0; i < vsi->num_queue_pairs; i++)
2039                         ctxt->info.queue_mapping[i] =
2040                                                cpu_to_le16(vsi->base_queue + i);
2041         } else {
2042                 ctxt->info.mapping_flags |=
2043                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
2044                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
2045         }
2046         ctxt->info.valid_sections |= cpu_to_le16(sections);
2047 }
2048
2049 /**
2050  * i40e_addr_sync - Callback for dev_(mc|uc)_sync to add address
2051  * @netdev: the netdevice
2052  * @addr: address to add
2053  *
2054  * Called by __dev_(mc|uc)_sync when an address needs to be added. We call
2055  * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock.
2056  */
2057 static int i40e_addr_sync(struct net_device *netdev, const u8 *addr)
2058 {
2059         struct i40e_netdev_priv *np = netdev_priv(netdev);
2060         struct i40e_vsi *vsi = np->vsi;
2061
2062         if (i40e_add_mac_filter(vsi, addr))
2063                 return 0;
2064         else
2065                 return -ENOMEM;
2066 }
2067
2068 /**
2069  * i40e_addr_unsync - Callback for dev_(mc|uc)_sync to remove address
2070  * @netdev: the netdevice
2071  * @addr: address to add
2072  *
2073  * Called by __dev_(mc|uc)_sync when an address needs to be removed. We call
2074  * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock.
2075  */
2076 static int i40e_addr_unsync(struct net_device *netdev, const u8 *addr)
2077 {
2078         struct i40e_netdev_priv *np = netdev_priv(netdev);
2079         struct i40e_vsi *vsi = np->vsi;
2080
2081         /* Under some circumstances, we might receive a request to delete
2082          * our own device address from our uc list. Because we store the
2083          * device address in the VSI's MAC/VLAN filter list, we need to ignore
2084          * such requests and not delete our device address from this list.
2085          */
2086         if (ether_addr_equal(addr, netdev->dev_addr))
2087                 return 0;
2088
2089         i40e_del_mac_filter(vsi, addr);
2090
2091         return 0;
2092 }
2093
2094 /**
2095  * i40e_set_rx_mode - NDO callback to set the netdev filters
2096  * @netdev: network interface device structure
2097  **/
2098 static void i40e_set_rx_mode(struct net_device *netdev)
2099 {
2100         struct i40e_netdev_priv *np = netdev_priv(netdev);
2101         struct i40e_vsi *vsi = np->vsi;
2102
2103         spin_lock_bh(&vsi->mac_filter_hash_lock);
2104
2105         __dev_uc_sync(netdev, i40e_addr_sync, i40e_addr_unsync);
2106         __dev_mc_sync(netdev, i40e_addr_sync, i40e_addr_unsync);
2107
2108         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2109
2110         /* check for other flag changes */
2111         if (vsi->current_netdev_flags != vsi->netdev->flags) {
2112                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
2113                 set_bit(__I40E_MACVLAN_SYNC_PENDING, vsi->back->state);
2114         }
2115 }
2116
2117 /**
2118  * i40e_undo_del_filter_entries - Undo the changes made to MAC filter entries
2119  * @vsi: Pointer to VSI struct
2120  * @from: Pointer to list which contains MAC filter entries - changes to
2121  *        those entries needs to be undone.
2122  *
2123  * MAC filter entries from this list were slated for deletion.
2124  **/
2125 static void i40e_undo_del_filter_entries(struct i40e_vsi *vsi,
2126                                          struct hlist_head *from)
2127 {
2128         struct i40e_mac_filter *f;
2129         struct hlist_node *h;
2130
2131         hlist_for_each_entry_safe(f, h, from, hlist) {
2132                 u64 key = i40e_addr_to_hkey(f->macaddr);
2133
2134                 /* Move the element back into MAC filter list*/
2135                 hlist_del(&f->hlist);
2136                 hash_add(vsi->mac_filter_hash, &f->hlist, key);
2137         }
2138 }
2139
2140 /**
2141  * i40e_undo_add_filter_entries - Undo the changes made to MAC filter entries
2142  * @vsi: Pointer to vsi struct
2143  * @from: Pointer to list which contains MAC filter entries - changes to
2144  *        those entries needs to be undone.
2145  *
2146  * MAC filter entries from this list were slated for addition.
2147  **/
2148 static void i40e_undo_add_filter_entries(struct i40e_vsi *vsi,
2149                                          struct hlist_head *from)
2150 {
2151         struct i40e_new_mac_filter *new;
2152         struct hlist_node *h;
2153
2154         hlist_for_each_entry_safe(new, h, from, hlist) {
2155                 /* We can simply free the wrapper structure */
2156                 hlist_del(&new->hlist);
2157                 netdev_hw_addr_refcnt(new->f, vsi->netdev, -1);
2158                 kfree(new);
2159         }
2160 }
2161
2162 /**
2163  * i40e_next_filter - Get the next non-broadcast filter from a list
2164  * @next: pointer to filter in list
2165  *
2166  * Returns the next non-broadcast filter in the list. Required so that we
2167  * ignore broadcast filters within the list, since these are not handled via
2168  * the normal firmware update path.
2169  */
2170 static
2171 struct i40e_new_mac_filter *i40e_next_filter(struct i40e_new_mac_filter *next)
2172 {
2173         hlist_for_each_entry_continue(next, hlist) {
2174                 if (!is_broadcast_ether_addr(next->f->macaddr))
2175                         return next;
2176         }
2177
2178         return NULL;
2179 }
2180
2181 /**
2182  * i40e_update_filter_state - Update filter state based on return data
2183  * from firmware
2184  * @count: Number of filters added
2185  * @add_list: return data from fw
2186  * @add_head: pointer to first filter in current batch
2187  *
2188  * MAC filter entries from list were slated to be added to device. Returns
2189  * number of successful filters. Note that 0 does NOT mean success!
2190  **/
2191 static int
2192 i40e_update_filter_state(int count,
2193                          struct i40e_aqc_add_macvlan_element_data *add_list,
2194                          struct i40e_new_mac_filter *add_head)
2195 {
2196         int retval = 0;
2197         int i;
2198
2199         for (i = 0; i < count; i++) {
2200                 /* Always check status of each filter. We don't need to check
2201                  * the firmware return status because we pre-set the filter
2202                  * status to I40E_AQC_MM_ERR_NO_RES when sending the filter
2203                  * request to the adminq. Thus, if it no longer matches then
2204                  * we know the filter is active.
2205                  */
2206                 if (add_list[i].match_method == I40E_AQC_MM_ERR_NO_RES) {
2207                         add_head->state = I40E_FILTER_FAILED;
2208                 } else {
2209                         add_head->state = I40E_FILTER_ACTIVE;
2210                         retval++;
2211                 }
2212
2213                 add_head = i40e_next_filter(add_head);
2214                 if (!add_head)
2215                         break;
2216         }
2217
2218         return retval;
2219 }
2220
2221 /**
2222  * i40e_aqc_del_filters - Request firmware to delete a set of filters
2223  * @vsi: ptr to the VSI
2224  * @vsi_name: name to display in messages
2225  * @list: the list of filters to send to firmware
2226  * @num_del: the number of filters to delete
2227  * @retval: Set to -EIO on failure to delete
2228  *
2229  * Send a request to firmware via AdminQ to delete a set of filters. Uses
2230  * *retval instead of a return value so that success does not force ret_val to
2231  * be set to 0. This ensures that a sequence of calls to this function
2232  * preserve the previous value of *retval on successful delete.
2233  */
2234 static
2235 void i40e_aqc_del_filters(struct i40e_vsi *vsi, const char *vsi_name,
2236                           struct i40e_aqc_remove_macvlan_element_data *list,
2237                           int num_del, int *retval)
2238 {
2239         struct i40e_hw *hw = &vsi->back->hw;
2240         enum i40e_admin_queue_err aq_status;
2241         i40e_status aq_ret;
2242
2243         aq_ret = i40e_aq_remove_macvlan_v2(hw, vsi->seid, list, num_del, NULL,
2244                                            &aq_status);
2245
2246         /* Explicitly ignore and do not report when firmware returns ENOENT */
2247         if (aq_ret && !(aq_status == I40E_AQ_RC_ENOENT)) {
2248                 *retval = -EIO;
2249                 dev_info(&vsi->back->pdev->dev,
2250                          "ignoring delete macvlan error on %s, err %s, aq_err %s\n",
2251                          vsi_name, i40e_stat_str(hw, aq_ret),
2252                          i40e_aq_str(hw, aq_status));
2253         }
2254 }
2255
2256 /**
2257  * i40e_aqc_add_filters - Request firmware to add a set of filters
2258  * @vsi: ptr to the VSI
2259  * @vsi_name: name to display in messages
2260  * @list: the list of filters to send to firmware
2261  * @add_head: Position in the add hlist
2262  * @num_add: the number of filters to add
2263  *
2264  * Send a request to firmware via AdminQ to add a chunk of filters. Will set
2265  * __I40E_VSI_OVERFLOW_PROMISC bit in vsi->state if the firmware has run out of
2266  * space for more filters.
2267  */
2268 static
2269 void i40e_aqc_add_filters(struct i40e_vsi *vsi, const char *vsi_name,
2270                           struct i40e_aqc_add_macvlan_element_data *list,
2271                           struct i40e_new_mac_filter *add_head,
2272                           int num_add)
2273 {
2274         struct i40e_hw *hw = &vsi->back->hw;
2275         enum i40e_admin_queue_err aq_status;
2276         int fcnt;
2277
2278         i40e_aq_add_macvlan_v2(hw, vsi->seid, list, num_add, NULL, &aq_status);
2279         fcnt = i40e_update_filter_state(num_add, list, add_head);
2280
2281         if (fcnt != num_add) {
2282                 if (vsi->type == I40E_VSI_MAIN) {
2283                         set_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2284                         dev_warn(&vsi->back->pdev->dev,
2285                                  "Error %s adding RX filters on %s, promiscuous mode forced on\n",
2286                                  i40e_aq_str(hw, aq_status), vsi_name);
2287                 } else if (vsi->type == I40E_VSI_SRIOV ||
2288                            vsi->type == I40E_VSI_VMDQ1 ||
2289                            vsi->type == I40E_VSI_VMDQ2) {
2290                         dev_warn(&vsi->back->pdev->dev,
2291                                  "Error %s adding RX filters on %s, please set promiscuous on manually for %s\n",
2292                                  i40e_aq_str(hw, aq_status), vsi_name,
2293                                              vsi_name);
2294                 } else {
2295                         dev_warn(&vsi->back->pdev->dev,
2296                                  "Error %s adding RX filters on %s, incorrect VSI type: %i.\n",
2297                                  i40e_aq_str(hw, aq_status), vsi_name,
2298                                              vsi->type);
2299                 }
2300         }
2301 }
2302
2303 /**
2304  * i40e_aqc_broadcast_filter - Set promiscuous broadcast flags
2305  * @vsi: pointer to the VSI
2306  * @vsi_name: the VSI name
2307  * @f: filter data
2308  *
2309  * This function sets or clears the promiscuous broadcast flags for VLAN
2310  * filters in order to properly receive broadcast frames. Assumes that only
2311  * broadcast filters are passed.
2312  *
2313  * Returns status indicating success or failure;
2314  **/
2315 static i40e_status
2316 i40e_aqc_broadcast_filter(struct i40e_vsi *vsi, const char *vsi_name,
2317                           struct i40e_mac_filter *f)
2318 {
2319         bool enable = f->state == I40E_FILTER_NEW;
2320         struct i40e_hw *hw = &vsi->back->hw;
2321         i40e_status aq_ret;
2322
2323         if (f->vlan == I40E_VLAN_ANY) {
2324                 aq_ret = i40e_aq_set_vsi_broadcast(hw,
2325                                                    vsi->seid,
2326                                                    enable,
2327                                                    NULL);
2328         } else {
2329                 aq_ret = i40e_aq_set_vsi_bc_promisc_on_vlan(hw,
2330                                                             vsi->seid,
2331                                                             enable,
2332                                                             f->vlan,
2333                                                             NULL);
2334         }
2335
2336         if (aq_ret) {
2337                 set_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2338                 dev_warn(&vsi->back->pdev->dev,
2339                          "Error %s, forcing overflow promiscuous on %s\n",
2340                          i40e_aq_str(hw, hw->aq.asq_last_status),
2341                          vsi_name);
2342         }
2343
2344         return aq_ret;
2345 }
2346
2347 /**
2348  * i40e_set_promiscuous - set promiscuous mode
2349  * @pf: board private structure
2350  * @promisc: promisc on or off
2351  *
2352  * There are different ways of setting promiscuous mode on a PF depending on
2353  * what state/environment we're in.  This identifies and sets it appropriately.
2354  * Returns 0 on success.
2355  **/
2356 static int i40e_set_promiscuous(struct i40e_pf *pf, bool promisc)
2357 {
2358         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
2359         struct i40e_hw *hw = &pf->hw;
2360         i40e_status aq_ret;
2361
2362         if (vsi->type == I40E_VSI_MAIN &&
2363             pf->lan_veb != I40E_NO_VEB &&
2364             !(pf->flags & I40E_FLAG_MFP_ENABLED)) {
2365                 /* set defport ON for Main VSI instead of true promisc
2366                  * this way we will get all unicast/multicast and VLAN
2367                  * promisc behavior but will not get VF or VMDq traffic
2368                  * replicated on the Main VSI.
2369                  */
2370                 if (promisc)
2371                         aq_ret = i40e_aq_set_default_vsi(hw,
2372                                                          vsi->seid,
2373                                                          NULL);
2374                 else
2375                         aq_ret = i40e_aq_clear_default_vsi(hw,
2376                                                            vsi->seid,
2377                                                            NULL);
2378                 if (aq_ret) {
2379                         dev_info(&pf->pdev->dev,
2380                                  "Set default VSI failed, err %s, aq_err %s\n",
2381                                  i40e_stat_str(hw, aq_ret),
2382                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2383                 }
2384         } else {
2385                 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(
2386                                                   hw,
2387                                                   vsi->seid,
2388                                                   promisc, NULL,
2389                                                   true);
2390                 if (aq_ret) {
2391                         dev_info(&pf->pdev->dev,
2392                                  "set unicast promisc failed, err %s, aq_err %s\n",
2393                                  i40e_stat_str(hw, aq_ret),
2394                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2395                 }
2396                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(
2397                                                   hw,
2398                                                   vsi->seid,
2399                                                   promisc, NULL);
2400                 if (aq_ret) {
2401                         dev_info(&pf->pdev->dev,
2402                                  "set multicast promisc failed, err %s, aq_err %s\n",
2403                                  i40e_stat_str(hw, aq_ret),
2404                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2405                 }
2406         }
2407
2408         if (!aq_ret)
2409                 pf->cur_promisc = promisc;
2410
2411         return aq_ret;
2412 }
2413
2414 /**
2415  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
2416  * @vsi: ptr to the VSI
2417  *
2418  * Push any outstanding VSI filter changes through the AdminQ.
2419  *
2420  * Returns 0 or error value
2421  **/
2422 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
2423 {
2424         struct hlist_head tmp_add_list, tmp_del_list;
2425         struct i40e_mac_filter *f;
2426         struct i40e_new_mac_filter *new, *add_head = NULL;
2427         struct i40e_hw *hw = &vsi->back->hw;
2428         bool old_overflow, new_overflow;
2429         unsigned int failed_filters = 0;
2430         unsigned int vlan_filters = 0;
2431         char vsi_name[16] = "PF";
2432         int filter_list_len = 0;
2433         i40e_status aq_ret = 0;
2434         u32 changed_flags = 0;
2435         struct hlist_node *h;
2436         struct i40e_pf *pf;
2437         int num_add = 0;
2438         int num_del = 0;
2439         int retval = 0;
2440         u16 cmd_flags;
2441         int list_size;
2442         int bkt;
2443
2444         /* empty array typed pointers, kcalloc later */
2445         struct i40e_aqc_add_macvlan_element_data *add_list;
2446         struct i40e_aqc_remove_macvlan_element_data *del_list;
2447
2448         while (test_and_set_bit(__I40E_VSI_SYNCING_FILTERS, vsi->state))
2449                 usleep_range(1000, 2000);
2450         pf = vsi->back;
2451
2452         old_overflow = test_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2453
2454         if (vsi->netdev) {
2455                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
2456                 vsi->current_netdev_flags = vsi->netdev->flags;
2457         }
2458
2459         INIT_HLIST_HEAD(&tmp_add_list);
2460         INIT_HLIST_HEAD(&tmp_del_list);
2461
2462         if (vsi->type == I40E_VSI_SRIOV)
2463                 snprintf(vsi_name, sizeof(vsi_name) - 1, "VF %d", vsi->vf_id);
2464         else if (vsi->type != I40E_VSI_MAIN)
2465                 snprintf(vsi_name, sizeof(vsi_name) - 1, "vsi %d", vsi->seid);
2466
2467         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
2468                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
2469
2470                 spin_lock_bh(&vsi->mac_filter_hash_lock);
2471                 /* Create a list of filters to delete. */
2472                 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
2473                         if (f->state == I40E_FILTER_REMOVE) {
2474                                 /* Move the element into temporary del_list */
2475                                 hash_del(&f->hlist);
2476                                 hlist_add_head(&f->hlist, &tmp_del_list);
2477
2478                                 /* Avoid counting removed filters */
2479                                 continue;
2480                         }
2481                         if (f->state == I40E_FILTER_NEW) {
2482                                 /* Create a temporary i40e_new_mac_filter */
2483                                 new = kzalloc(sizeof(*new), GFP_ATOMIC);
2484                                 if (!new)
2485                                         goto err_no_memory_locked;
2486
2487                                 /* Store pointer to the real filter */
2488                                 new->f = f;
2489                                 new->state = f->state;
2490
2491                                 /* Add it to the hash list */
2492                                 hlist_add_head(&new->hlist, &tmp_add_list);
2493                         }
2494
2495                         /* Count the number of active (current and new) VLAN
2496                          * filters we have now. Does not count filters which
2497                          * are marked for deletion.
2498                          */
2499                         if (f->vlan > 0)
2500                                 vlan_filters++;
2501                 }
2502
2503                 retval = i40e_correct_mac_vlan_filters(vsi,
2504                                                        &tmp_add_list,
2505                                                        &tmp_del_list,
2506                                                        vlan_filters);
2507
2508                 hlist_for_each_entry(new, &tmp_add_list, hlist)
2509                         netdev_hw_addr_refcnt(new->f, vsi->netdev, 1);
2510
2511                 if (retval)
2512                         goto err_no_memory_locked;
2513
2514                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2515         }
2516
2517         /* Now process 'del_list' outside the lock */
2518         if (!hlist_empty(&tmp_del_list)) {
2519                 filter_list_len = hw->aq.asq_buf_size /
2520                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
2521                 list_size = filter_list_len *
2522                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
2523                 del_list = kzalloc(list_size, GFP_ATOMIC);
2524                 if (!del_list)
2525                         goto err_no_memory;
2526
2527                 hlist_for_each_entry_safe(f, h, &tmp_del_list, hlist) {
2528                         cmd_flags = 0;
2529
2530                         /* handle broadcast filters by updating the broadcast
2531                          * promiscuous flag and release filter list.
2532                          */
2533                         if (is_broadcast_ether_addr(f->macaddr)) {
2534                                 i40e_aqc_broadcast_filter(vsi, vsi_name, f);
2535
2536                                 hlist_del(&f->hlist);
2537                                 kfree(f);
2538                                 continue;
2539                         }
2540
2541                         /* add to delete list */
2542                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
2543                         if (f->vlan == I40E_VLAN_ANY) {
2544                                 del_list[num_del].vlan_tag = 0;
2545                                 cmd_flags |= I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
2546                         } else {
2547                                 del_list[num_del].vlan_tag =
2548                                         cpu_to_le16((u16)(f->vlan));
2549                         }
2550
2551                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
2552                         del_list[num_del].flags = cmd_flags;
2553                         num_del++;
2554
2555                         /* flush a full buffer */
2556                         if (num_del == filter_list_len) {
2557                                 i40e_aqc_del_filters(vsi, vsi_name, del_list,
2558                                                      num_del, &retval);
2559                                 memset(del_list, 0, list_size);
2560                                 num_del = 0;
2561                         }
2562                         /* Release memory for MAC filter entries which were
2563                          * synced up with HW.
2564                          */
2565                         hlist_del(&f->hlist);
2566                         kfree(f);
2567                 }
2568
2569                 if (num_del) {
2570                         i40e_aqc_del_filters(vsi, vsi_name, del_list,
2571                                              num_del, &retval);
2572                 }
2573
2574                 kfree(del_list);
2575                 del_list = NULL;
2576         }
2577
2578         if (!hlist_empty(&tmp_add_list)) {
2579                 /* Do all the adds now. */
2580                 filter_list_len = hw->aq.asq_buf_size /
2581                                sizeof(struct i40e_aqc_add_macvlan_element_data);
2582                 list_size = filter_list_len *
2583                                sizeof(struct i40e_aqc_add_macvlan_element_data);
2584                 add_list = kzalloc(list_size, GFP_ATOMIC);
2585                 if (!add_list)
2586                         goto err_no_memory;
2587
2588                 num_add = 0;
2589                 hlist_for_each_entry_safe(new, h, &tmp_add_list, hlist) {
2590                         /* handle broadcast filters by updating the broadcast
2591                          * promiscuous flag instead of adding a MAC filter.
2592                          */
2593                         if (is_broadcast_ether_addr(new->f->macaddr)) {
2594                                 if (i40e_aqc_broadcast_filter(vsi, vsi_name,
2595                                                               new->f))
2596                                         new->state = I40E_FILTER_FAILED;
2597                                 else
2598                                         new->state = I40E_FILTER_ACTIVE;
2599                                 continue;
2600                         }
2601
2602                         /* add to add array */
2603                         if (num_add == 0)
2604                                 add_head = new;
2605                         cmd_flags = 0;
2606                         ether_addr_copy(add_list[num_add].mac_addr,
2607                                         new->f->macaddr);
2608                         if (new->f->vlan == I40E_VLAN_ANY) {
2609                                 add_list[num_add].vlan_tag = 0;
2610                                 cmd_flags |= I40E_AQC_MACVLAN_ADD_IGNORE_VLAN;
2611                         } else {
2612                                 add_list[num_add].vlan_tag =
2613                                         cpu_to_le16((u16)(new->f->vlan));
2614                         }
2615                         add_list[num_add].queue_number = 0;
2616                         /* set invalid match method for later detection */
2617                         add_list[num_add].match_method = I40E_AQC_MM_ERR_NO_RES;
2618                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
2619                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
2620                         num_add++;
2621
2622                         /* flush a full buffer */
2623                         if (num_add == filter_list_len) {
2624                                 i40e_aqc_add_filters(vsi, vsi_name, add_list,
2625                                                      add_head, num_add);
2626                                 memset(add_list, 0, list_size);
2627                                 num_add = 0;
2628                         }
2629                 }
2630                 if (num_add) {
2631                         i40e_aqc_add_filters(vsi, vsi_name, add_list, add_head,
2632                                              num_add);
2633                 }
2634                 /* Now move all of the filters from the temp add list back to
2635                  * the VSI's list.
2636                  */
2637                 spin_lock_bh(&vsi->mac_filter_hash_lock);
2638                 hlist_for_each_entry_safe(new, h, &tmp_add_list, hlist) {
2639                         /* Only update the state if we're still NEW */
2640                         if (new->f->state == I40E_FILTER_NEW)
2641                                 new->f->state = new->state;
2642                         hlist_del(&new->hlist);
2643                         netdev_hw_addr_refcnt(new->f, vsi->netdev, -1);
2644                         kfree(new);
2645                 }
2646                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2647                 kfree(add_list);
2648                 add_list = NULL;
2649         }
2650
2651         /* Determine the number of active and failed filters. */
2652         spin_lock_bh(&vsi->mac_filter_hash_lock);
2653         vsi->active_filters = 0;
2654         hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
2655                 if (f->state == I40E_FILTER_ACTIVE)
2656                         vsi->active_filters++;
2657                 else if (f->state == I40E_FILTER_FAILED)
2658                         failed_filters++;
2659         }
2660         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2661
2662         /* Check if we are able to exit overflow promiscuous mode. We can
2663          * safely exit if we didn't just enter, we no longer have any failed
2664          * filters, and we have reduced filters below the threshold value.
2665          */
2666         if (old_overflow && !failed_filters &&
2667             vsi->active_filters < vsi->promisc_threshold) {
2668                 dev_info(&pf->pdev->dev,
2669                          "filter logjam cleared on %s, leaving overflow promiscuous mode\n",
2670                          vsi_name);
2671                 clear_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2672                 vsi->promisc_threshold = 0;
2673         }
2674
2675         /* if the VF is not trusted do not do promisc */
2676         if ((vsi->type == I40E_VSI_SRIOV) && !pf->vf[vsi->vf_id].trusted) {
2677                 clear_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2678                 goto out;
2679         }
2680
2681         new_overflow = test_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2682
2683         /* If we are entering overflow promiscuous, we need to calculate a new
2684          * threshold for when we are safe to exit
2685          */
2686         if (!old_overflow && new_overflow)
2687                 vsi->promisc_threshold = (vsi->active_filters * 3) / 4;
2688
2689         /* check for changes in promiscuous modes */
2690         if (changed_flags & IFF_ALLMULTI) {
2691                 bool cur_multipromisc;
2692
2693                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
2694                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
2695                                                                vsi->seid,
2696                                                                cur_multipromisc,
2697                                                                NULL);
2698                 if (aq_ret) {
2699                         retval = i40e_aq_rc_to_posix(aq_ret,
2700                                                      hw->aq.asq_last_status);
2701                         dev_info(&pf->pdev->dev,
2702                                  "set multi promisc failed on %s, err %s aq_err %s\n",
2703                                  vsi_name,
2704                                  i40e_stat_str(hw, aq_ret),
2705                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2706                 } else {
2707                         dev_info(&pf->pdev->dev, "%s allmulti mode.\n",
2708                                  cur_multipromisc ? "entering" : "leaving");
2709                 }
2710         }
2711
2712         if ((changed_flags & IFF_PROMISC) || old_overflow != new_overflow) {
2713                 bool cur_promisc;
2714
2715                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
2716                                new_overflow);
2717                 aq_ret = i40e_set_promiscuous(pf, cur_promisc);
2718                 if (aq_ret) {
2719                         retval = i40e_aq_rc_to_posix(aq_ret,
2720                                                      hw->aq.asq_last_status);
2721                         dev_info(&pf->pdev->dev,
2722                                  "Setting promiscuous %s failed on %s, err %s aq_err %s\n",
2723                                  cur_promisc ? "on" : "off",
2724                                  vsi_name,
2725                                  i40e_stat_str(hw, aq_ret),
2726                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2727                 }
2728         }
2729 out:
2730         /* if something went wrong then set the changed flag so we try again */
2731         if (retval)
2732                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
2733
2734         clear_bit(__I40E_VSI_SYNCING_FILTERS, vsi->state);
2735         return retval;
2736
2737 err_no_memory:
2738         /* Restore elements on the temporary add and delete lists */
2739         spin_lock_bh(&vsi->mac_filter_hash_lock);
2740 err_no_memory_locked:
2741         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
2742         i40e_undo_add_filter_entries(vsi, &tmp_add_list);
2743         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2744
2745         vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
2746         clear_bit(__I40E_VSI_SYNCING_FILTERS, vsi->state);
2747         return -ENOMEM;
2748 }
2749
2750 /**
2751  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2752  * @pf: board private structure
2753  **/
2754 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2755 {
2756         int v;
2757
2758         if (!pf)
2759                 return;
2760         if (!test_and_clear_bit(__I40E_MACVLAN_SYNC_PENDING, pf->state))
2761                 return;
2762         if (test_bit(__I40E_VF_DISABLE, pf->state)) {
2763                 set_bit(__I40E_MACVLAN_SYNC_PENDING, pf->state);
2764                 return;
2765         }
2766
2767         for (v = 0; v < pf->num_alloc_vsi; v++) {
2768                 if (pf->vsi[v] &&
2769                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED) &&
2770                     !test_bit(__I40E_VSI_RELEASING, pf->vsi[v]->state)) {
2771                         int ret = i40e_sync_vsi_filters(pf->vsi[v]);
2772
2773                         if (ret) {
2774                                 /* come back and try again later */
2775                                 set_bit(__I40E_MACVLAN_SYNC_PENDING,
2776                                         pf->state);
2777                                 break;
2778                         }
2779                 }
2780         }
2781 }
2782
2783 /**
2784  * i40e_max_xdp_frame_size - returns the maximum allowed frame size for XDP
2785  * @vsi: the vsi
2786  **/
2787 static int i40e_max_xdp_frame_size(struct i40e_vsi *vsi)
2788 {
2789         if (PAGE_SIZE >= 8192 || (vsi->back->flags & I40E_FLAG_LEGACY_RX))
2790                 return I40E_RXBUFFER_2048;
2791         else
2792                 return I40E_RXBUFFER_3072;
2793 }
2794
2795 /**
2796  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2797  * @netdev: network interface device structure
2798  * @new_mtu: new value for maximum frame size
2799  *
2800  * Returns 0 on success, negative on failure
2801  **/
2802 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2803 {
2804         struct i40e_netdev_priv *np = netdev_priv(netdev);
2805         struct i40e_vsi *vsi = np->vsi;
2806         struct i40e_pf *pf = vsi->back;
2807
2808         if (i40e_enabled_xdp_vsi(vsi)) {
2809                 int frame_size = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2810
2811                 if (frame_size > i40e_max_xdp_frame_size(vsi))
2812                         return -EINVAL;
2813         }
2814
2815         netdev_dbg(netdev, "changing MTU from %d to %d\n",
2816                    netdev->mtu, new_mtu);
2817         netdev->mtu = new_mtu;
2818         if (netif_running(netdev))
2819                 i40e_vsi_reinit_locked(vsi);
2820         set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
2821         set_bit(__I40E_CLIENT_L2_CHANGE, pf->state);
2822         return 0;
2823 }
2824
2825 /**
2826  * i40e_ioctl - Access the hwtstamp interface
2827  * @netdev: network interface device structure
2828  * @ifr: interface request data
2829  * @cmd: ioctl command
2830  **/
2831 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2832 {
2833         struct i40e_netdev_priv *np = netdev_priv(netdev);
2834         struct i40e_pf *pf = np->vsi->back;
2835
2836         switch (cmd) {
2837         case SIOCGHWTSTAMP:
2838                 return i40e_ptp_get_ts_config(pf, ifr);
2839         case SIOCSHWTSTAMP:
2840                 return i40e_ptp_set_ts_config(pf, ifr);
2841         default:
2842                 return -EOPNOTSUPP;
2843         }
2844 }
2845
2846 /**
2847  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2848  * @vsi: the vsi being adjusted
2849  **/
2850 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2851 {
2852         struct i40e_vsi_context ctxt;
2853         i40e_status ret;
2854
2855         /* Don't modify stripping options if a port VLAN is active */
2856         if (vsi->info.pvid)
2857                 return;
2858
2859         if ((vsi->info.valid_sections &
2860              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2861             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2862                 return;  /* already enabled */
2863
2864         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2865         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2866                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2867
2868         ctxt.seid = vsi->seid;
2869         ctxt.info = vsi->info;
2870         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2871         if (ret) {
2872                 dev_info(&vsi->back->pdev->dev,
2873                          "update vlan stripping failed, err %s aq_err %s\n",
2874                          i40e_stat_str(&vsi->back->hw, ret),
2875                          i40e_aq_str(&vsi->back->hw,
2876                                      vsi->back->hw.aq.asq_last_status));
2877         }
2878 }
2879
2880 /**
2881  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2882  * @vsi: the vsi being adjusted
2883  **/
2884 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2885 {
2886         struct i40e_vsi_context ctxt;
2887         i40e_status ret;
2888
2889         /* Don't modify stripping options if a port VLAN is active */
2890         if (vsi->info.pvid)
2891                 return;
2892
2893         if ((vsi->info.valid_sections &
2894              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2895             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2896              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2897                 return;  /* already disabled */
2898
2899         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2900         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2901                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2902
2903         ctxt.seid = vsi->seid;
2904         ctxt.info = vsi->info;
2905         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2906         if (ret) {
2907                 dev_info(&vsi->back->pdev->dev,
2908                          "update vlan stripping failed, err %s aq_err %s\n",
2909                          i40e_stat_str(&vsi->back->hw, ret),
2910                          i40e_aq_str(&vsi->back->hw,
2911                                      vsi->back->hw.aq.asq_last_status));
2912         }
2913 }
2914
2915 /**
2916  * i40e_add_vlan_all_mac - Add a MAC/VLAN filter for each existing MAC address
2917  * @vsi: the vsi being configured
2918  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2919  *
2920  * This is a helper function for adding a new MAC/VLAN filter with the
2921  * specified VLAN for each existing MAC address already in the hash table.
2922  * This function does *not* perform any accounting to update filters based on
2923  * VLAN mode.
2924  *
2925  * NOTE: this function expects to be called while under the
2926  * mac_filter_hash_lock
2927  **/
2928 int i40e_add_vlan_all_mac(struct i40e_vsi *vsi, s16 vid)
2929 {
2930         struct i40e_mac_filter *f, *add_f;
2931         struct hlist_node *h;
2932         int bkt;
2933
2934         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
2935                 if (f->state == I40E_FILTER_REMOVE)
2936                         continue;
2937                 add_f = i40e_add_filter(vsi, f->macaddr, vid);
2938                 if (!add_f) {
2939                         dev_info(&vsi->back->pdev->dev,
2940                                  "Could not add vlan filter %d for %pM\n",
2941                                  vid, f->macaddr);
2942                         return -ENOMEM;
2943                 }
2944         }
2945
2946         return 0;
2947 }
2948
2949 /**
2950  * i40e_vsi_add_vlan - Add VSI membership for given VLAN
2951  * @vsi: the VSI being configured
2952  * @vid: VLAN id to be added
2953  **/
2954 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, u16 vid)
2955 {
2956         int err;
2957
2958         if (vsi->info.pvid)
2959                 return -EINVAL;
2960
2961         /* The network stack will attempt to add VID=0, with the intention to
2962          * receive priority tagged packets with a VLAN of 0. Our HW receives
2963          * these packets by default when configured to receive untagged
2964          * packets, so we don't need to add a filter for this case.
2965          * Additionally, HW interprets adding a VID=0 filter as meaning to
2966          * receive *only* tagged traffic and stops receiving untagged traffic.
2967          * Thus, we do not want to actually add a filter for VID=0
2968          */
2969         if (!vid)
2970                 return 0;
2971
2972         /* Locked once because all functions invoked below iterates list*/
2973         spin_lock_bh(&vsi->mac_filter_hash_lock);
2974         err = i40e_add_vlan_all_mac(vsi, vid);
2975         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2976         if (err)
2977                 return err;
2978
2979         /* schedule our worker thread which will take care of
2980          * applying the new filter changes
2981          */
2982         i40e_service_event_schedule(vsi->back);
2983         return 0;
2984 }
2985
2986 /**
2987  * i40e_rm_vlan_all_mac - Remove MAC/VLAN pair for all MAC with the given VLAN
2988  * @vsi: the vsi being configured
2989  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2990  *
2991  * This function should be used to remove all VLAN filters which match the
2992  * given VID. It does not schedule the service event and does not take the
2993  * mac_filter_hash_lock so it may be combined with other operations under
2994  * a single invocation of the mac_filter_hash_lock.
2995  *
2996  * NOTE: this function expects to be called while under the
2997  * mac_filter_hash_lock
2998  */
2999 void i40e_rm_vlan_all_mac(struct i40e_vsi *vsi, s16 vid)
3000 {
3001         struct i40e_mac_filter *f;
3002         struct hlist_node *h;
3003         int bkt;
3004
3005         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
3006                 if (f->vlan == vid)
3007                         __i40e_del_filter(vsi, f);
3008         }
3009 }
3010
3011 /**
3012  * i40e_vsi_kill_vlan - Remove VSI membership for given VLAN
3013  * @vsi: the VSI being configured
3014  * @vid: VLAN id to be removed
3015  **/
3016 void i40e_vsi_kill_vlan(struct i40e_vsi *vsi, u16 vid)
3017 {
3018         if (!vid || vsi->info.pvid)
3019                 return;
3020
3021         spin_lock_bh(&vsi->mac_filter_hash_lock);
3022         i40e_rm_vlan_all_mac(vsi, vid);
3023         spin_unlock_bh(&vsi->mac_filter_hash_lock);
3024
3025         /* schedule our worker thread which will take care of
3026          * applying the new filter changes
3027          */
3028         i40e_service_event_schedule(vsi->back);
3029 }
3030
3031 /**
3032  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
3033  * @netdev: network interface to be adjusted
3034  * @proto: unused protocol value
3035  * @vid: vlan id to be added
3036  *
3037  * net_device_ops implementation for adding vlan ids
3038  **/
3039 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
3040                                 __always_unused __be16 proto, u16 vid)
3041 {
3042         struct i40e_netdev_priv *np = netdev_priv(netdev);
3043         struct i40e_vsi *vsi = np->vsi;
3044         int ret = 0;
3045
3046         if (vid >= VLAN_N_VID)
3047                 return -EINVAL;
3048
3049         ret = i40e_vsi_add_vlan(vsi, vid);
3050         if (!ret)
3051                 set_bit(vid, vsi->active_vlans);
3052
3053         return ret;
3054 }
3055
3056 /**
3057  * i40e_vlan_rx_add_vid_up - Add a vlan id filter to HW offload in UP path
3058  * @netdev: network interface to be adjusted
3059  * @proto: unused protocol value
3060  * @vid: vlan id to be added
3061  **/
3062 static void i40e_vlan_rx_add_vid_up(struct net_device *netdev,
3063                                     __always_unused __be16 proto, u16 vid)
3064 {
3065         struct i40e_netdev_priv *np = netdev_priv(netdev);
3066         struct i40e_vsi *vsi = np->vsi;
3067
3068         if (vid >= VLAN_N_VID)
3069                 return;
3070         set_bit(vid, vsi->active_vlans);
3071 }
3072
3073 /**
3074  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
3075  * @netdev: network interface to be adjusted
3076  * @proto: unused protocol value
3077  * @vid: vlan id to be removed
3078  *
3079  * net_device_ops implementation for removing vlan ids
3080  **/
3081 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
3082                                  __always_unused __be16 proto, u16 vid)
3083 {
3084         struct i40e_netdev_priv *np = netdev_priv(netdev);
3085         struct i40e_vsi *vsi = np->vsi;
3086
3087         /* return code is ignored as there is nothing a user
3088          * can do about failure to remove and a log message was
3089          * already printed from the other function
3090          */
3091         i40e_vsi_kill_vlan(vsi, vid);
3092
3093         clear_bit(vid, vsi->active_vlans);
3094
3095         return 0;
3096 }
3097
3098 /**
3099  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
3100  * @vsi: the vsi being brought back up
3101  **/
3102 static void i40e_restore_vlan(struct i40e_vsi *vsi)
3103 {
3104         u16 vid;
3105
3106         if (!vsi->netdev)
3107                 return;
3108
3109         if (vsi->netdev->features & NETIF_F_HW_VLAN_CTAG_RX)
3110                 i40e_vlan_stripping_enable(vsi);
3111         else
3112                 i40e_vlan_stripping_disable(vsi);
3113
3114         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
3115                 i40e_vlan_rx_add_vid_up(vsi->netdev, htons(ETH_P_8021Q),
3116                                         vid);
3117 }
3118
3119 /**
3120  * i40e_vsi_add_pvid - Add pvid for the VSI
3121  * @vsi: the vsi being adjusted
3122  * @vid: the vlan id to set as a PVID
3123  **/
3124 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
3125 {
3126         struct i40e_vsi_context ctxt;
3127         i40e_status ret;
3128
3129         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
3130         vsi->info.pvid = cpu_to_le16(vid);
3131         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
3132                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
3133                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
3134
3135         ctxt.seid = vsi->seid;
3136         ctxt.info = vsi->info;
3137         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
3138         if (ret) {
3139                 dev_info(&vsi->back->pdev->dev,
3140                          "add pvid failed, err %s aq_err %s\n",
3141                          i40e_stat_str(&vsi->back->hw, ret),
3142                          i40e_aq_str(&vsi->back->hw,
3143                                      vsi->back->hw.aq.asq_last_status));
3144                 return -ENOENT;
3145         }
3146
3147         return 0;
3148 }
3149
3150 /**
3151  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
3152  * @vsi: the vsi being adjusted
3153  *
3154  * Just use the vlan_rx_register() service to put it back to normal
3155  **/
3156 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
3157 {
3158         vsi->info.pvid = 0;
3159
3160         i40e_vlan_stripping_disable(vsi);
3161 }
3162
3163 /**
3164  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
3165  * @vsi: ptr to the VSI
3166  *
3167  * If this function returns with an error, then it's possible one or
3168  * more of the rings is populated (while the rest are not).  It is the
3169  * callers duty to clean those orphaned rings.
3170  *
3171  * Return 0 on success, negative on failure
3172  **/
3173 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
3174 {
3175         int i, err = 0;
3176
3177         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3178                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
3179
3180         if (!i40e_enabled_xdp_vsi(vsi))
3181                 return err;
3182
3183         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3184                 err = i40e_setup_tx_descriptors(vsi->xdp_rings[i]);
3185
3186         return err;
3187 }
3188
3189 /**
3190  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
3191  * @vsi: ptr to the VSI
3192  *
3193  * Free VSI's transmit software resources
3194  **/
3195 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
3196 {
3197         int i;
3198
3199         if (vsi->tx_rings) {
3200                 for (i = 0; i < vsi->num_queue_pairs; i++)
3201                         if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
3202                                 i40e_free_tx_resources(vsi->tx_rings[i]);
3203         }
3204
3205         if (vsi->xdp_rings) {
3206                 for (i = 0; i < vsi->num_queue_pairs; i++)
3207                         if (vsi->xdp_rings[i] && vsi->xdp_rings[i]->desc)
3208                                 i40e_free_tx_resources(vsi->xdp_rings[i]);
3209         }
3210 }
3211
3212 /**
3213  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
3214  * @vsi: ptr to the VSI
3215  *
3216  * If this function returns with an error, then it's possible one or
3217  * more of the rings is populated (while the rest are not).  It is the
3218  * callers duty to clean those orphaned rings.
3219  *
3220  * Return 0 on success, negative on failure
3221  **/
3222 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
3223 {
3224         int i, err = 0;
3225
3226         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3227                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
3228         return err;
3229 }
3230
3231 /**
3232  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
3233  * @vsi: ptr to the VSI
3234  *
3235  * Free all receive software resources
3236  **/
3237 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
3238 {
3239         int i;
3240
3241         if (!vsi->rx_rings)
3242                 return;
3243
3244         for (i = 0; i < vsi->num_queue_pairs; i++)
3245                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
3246                         i40e_free_rx_resources(vsi->rx_rings[i]);
3247 }
3248
3249 /**
3250  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
3251  * @ring: The Tx ring to configure
3252  *
3253  * This enables/disables XPS for a given Tx descriptor ring
3254  * based on the TCs enabled for the VSI that ring belongs to.
3255  **/
3256 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
3257 {
3258         int cpu;
3259
3260         if (!ring->q_vector || !ring->netdev || ring->ch)
3261                 return;
3262
3263         /* We only initialize XPS once, so as not to overwrite user settings */
3264         if (test_and_set_bit(__I40E_TX_XPS_INIT_DONE, ring->state))
3265                 return;
3266
3267         cpu = cpumask_local_spread(ring->q_vector->v_idx, -1);
3268         netif_set_xps_queue(ring->netdev, get_cpu_mask(cpu),
3269                             ring->queue_index);
3270 }
3271
3272 /**
3273  * i40e_xsk_pool - Retrieve the AF_XDP buffer pool if XDP and ZC is enabled
3274  * @ring: The Tx or Rx ring
3275  *
3276  * Returns the AF_XDP buffer pool or NULL.
3277  **/
3278 static struct xsk_buff_pool *i40e_xsk_pool(struct i40e_ring *ring)
3279 {
3280         bool xdp_on = i40e_enabled_xdp_vsi(ring->vsi);
3281         int qid = ring->queue_index;
3282
3283         if (ring_is_xdp(ring))
3284                 qid -= ring->vsi->alloc_queue_pairs;
3285
3286         if (!xdp_on || !test_bit(qid, ring->vsi->af_xdp_zc_qps))
3287                 return NULL;
3288
3289         return xsk_get_pool_from_qid(ring->vsi->netdev, qid);
3290 }
3291
3292 /**
3293  * i40e_configure_tx_ring - Configure a transmit ring context and rest
3294  * @ring: The Tx ring to configure
3295  *
3296  * Configure the Tx descriptor ring in the HMC context.
3297  **/
3298 static int i40e_configure_tx_ring(struct i40e_ring *ring)
3299 {
3300         struct i40e_vsi *vsi = ring->vsi;
3301         u16 pf_q = vsi->base_queue + ring->queue_index;
3302         struct i40e_hw *hw = &vsi->back->hw;
3303         struct i40e_hmc_obj_txq tx_ctx;
3304         i40e_status err = 0;
3305         u32 qtx_ctl = 0;
3306
3307         if (ring_is_xdp(ring))
3308                 ring->xsk_pool = i40e_xsk_pool(ring);
3309
3310         /* some ATR related tx ring init */
3311         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
3312                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
3313                 ring->atr_count = 0;
3314         } else {
3315                 ring->atr_sample_rate = 0;
3316         }
3317
3318         /* configure XPS */
3319         i40e_config_xps_tx_ring(ring);
3320
3321         /* clear the context structure first */
3322         memset(&tx_ctx, 0, sizeof(tx_ctx));
3323
3324         tx_ctx.new_context = 1;
3325         tx_ctx.base = (ring->dma / 128);
3326         tx_ctx.qlen = ring->count;
3327         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
3328                                                I40E_FLAG_FD_ATR_ENABLED));
3329         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
3330         /* FDIR VSI tx ring can still use RS bit and writebacks */
3331         if (vsi->type != I40E_VSI_FDIR)
3332                 tx_ctx.head_wb_ena = 1;
3333         tx_ctx.head_wb_addr = ring->dma +
3334                               (ring->count * sizeof(struct i40e_tx_desc));
3335
3336         /* As part of VSI creation/update, FW allocates certain
3337          * Tx arbitration queue sets for each TC enabled for
3338          * the VSI. The FW returns the handles to these queue
3339          * sets as part of the response buffer to Add VSI,
3340          * Update VSI, etc. AQ commands. It is expected that
3341          * these queue set handles be associated with the Tx
3342          * queues by the driver as part of the TX queue context
3343          * initialization. This has to be done regardless of
3344          * DCB as by default everything is mapped to TC0.
3345          */
3346
3347         if (ring->ch)
3348                 tx_ctx.rdylist =
3349                         le16_to_cpu(ring->ch->info.qs_handle[ring->dcb_tc]);
3350
3351         else
3352                 tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
3353
3354         tx_ctx.rdylist_act = 0;
3355
3356         /* clear the context in the HMC */
3357         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
3358         if (err) {
3359                 dev_info(&vsi->back->pdev->dev,
3360                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
3361                          ring->queue_index, pf_q, err);
3362                 return -ENOMEM;
3363         }
3364
3365         /* set the context in the HMC */
3366         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
3367         if (err) {
3368                 dev_info(&vsi->back->pdev->dev,
3369                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
3370                          ring->queue_index, pf_q, err);
3371                 return -ENOMEM;
3372         }
3373
3374         /* Now associate this queue with this PCI function */
3375         if (ring->ch) {
3376                 if (ring->ch->type == I40E_VSI_VMDQ2)
3377                         qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
3378                 else
3379                         return -EINVAL;
3380
3381                 qtx_ctl |= (ring->ch->vsi_number <<
3382                             I40E_QTX_CTL_VFVM_INDX_SHIFT) &
3383                             I40E_QTX_CTL_VFVM_INDX_MASK;
3384         } else {
3385                 if (vsi->type == I40E_VSI_VMDQ2) {
3386                         qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
3387                         qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
3388                                     I40E_QTX_CTL_VFVM_INDX_MASK;
3389                 } else {
3390                         qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
3391                 }
3392         }
3393
3394         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
3395                     I40E_QTX_CTL_PF_INDX_MASK);
3396         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
3397         i40e_flush(hw);
3398
3399         /* cache tail off for easier writes later */
3400         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
3401
3402         return 0;
3403 }
3404
3405 /**
3406  * i40e_rx_offset - Return expected offset into page to access data
3407  * @rx_ring: Ring we are requesting offset of
3408  *
3409  * Returns the offset value for ring into the data buffer.
3410  */
3411 static unsigned int i40e_rx_offset(struct i40e_ring *rx_ring)
3412 {
3413         return ring_uses_build_skb(rx_ring) ? I40E_SKB_PAD : 0;
3414 }
3415
3416 /**
3417  * i40e_configure_rx_ring - Configure a receive ring context
3418  * @ring: The Rx ring to configure
3419  *
3420  * Configure the Rx descriptor ring in the HMC context.
3421  **/
3422 static int i40e_configure_rx_ring(struct i40e_ring *ring)
3423 {
3424         struct i40e_vsi *vsi = ring->vsi;
3425         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
3426         u16 pf_q = vsi->base_queue + ring->queue_index;
3427         struct i40e_hw *hw = &vsi->back->hw;
3428         struct i40e_hmc_obj_rxq rx_ctx;
3429         i40e_status err = 0;
3430         bool ok;
3431         int ret;
3432
3433         bitmap_zero(ring->state, __I40E_RING_STATE_NBITS);
3434
3435         /* clear the context structure first */
3436         memset(&rx_ctx, 0, sizeof(rx_ctx));
3437
3438         if (ring->vsi->type == I40E_VSI_MAIN)
3439                 xdp_rxq_info_unreg_mem_model(&ring->xdp_rxq);
3440
3441         kfree(ring->rx_bi);
3442         ring->xsk_pool = i40e_xsk_pool(ring);
3443         if (ring->xsk_pool) {
3444                 ret = i40e_alloc_rx_bi_zc(ring);
3445                 if (ret)
3446                         return ret;
3447                 ring->rx_buf_len =
3448                   xsk_pool_get_rx_frame_size(ring->xsk_pool);
3449                 /* For AF_XDP ZC, we disallow packets to span on
3450                  * multiple buffers, thus letting us skip that
3451                  * handling in the fast-path.
3452                  */
3453                 chain_len = 1;
3454                 ret = xdp_rxq_info_reg_mem_model(&ring->xdp_rxq,
3455                                                  MEM_TYPE_XSK_BUFF_POOL,
3456                                                  NULL);
3457                 if (ret)
3458                         return ret;
3459                 dev_info(&vsi->back->pdev->dev,
3460                          "Registered XDP mem model MEM_TYPE_XSK_BUFF_POOL on Rx ring %d\n",
3461                          ring->queue_index);
3462
3463         } else {
3464                 ret = i40e_alloc_rx_bi(ring);
3465                 if (ret)
3466                         return ret;
3467                 ring->rx_buf_len = vsi->rx_buf_len;
3468                 if (ring->vsi->type == I40E_VSI_MAIN) {
3469                         ret = xdp_rxq_info_reg_mem_model(&ring->xdp_rxq,
3470                                                          MEM_TYPE_PAGE_SHARED,
3471                                                          NULL);
3472                         if (ret)
3473                                 return ret;
3474                 }
3475         }
3476
3477         rx_ctx.dbuff = DIV_ROUND_UP(ring->rx_buf_len,
3478                                     BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
3479
3480         rx_ctx.base = (ring->dma / 128);
3481         rx_ctx.qlen = ring->count;
3482
3483         /* use 16 byte descriptors */
3484         rx_ctx.dsize = 0;
3485
3486         /* descriptor type is always zero
3487          * rx_ctx.dtype = 0;
3488          */
3489         rx_ctx.hsplit_0 = 0;
3490
3491         rx_ctx.rxmax = min_t(u16, vsi->max_frame, chain_len * ring->rx_buf_len);
3492         if (hw->revision_id == 0)
3493                 rx_ctx.lrxqthresh = 0;
3494         else
3495                 rx_ctx.lrxqthresh = 1;
3496         rx_ctx.crcstrip = 1;
3497         rx_ctx.l2tsel = 1;
3498         /* this controls whether VLAN is stripped from inner headers */
3499         rx_ctx.showiv = 0;
3500         /* set the prefena field to 1 because the manual says to */
3501         rx_ctx.prefena = 1;
3502
3503         /* clear the context in the HMC */
3504         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
3505         if (err) {
3506                 dev_info(&vsi->back->pdev->dev,
3507                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
3508                          ring->queue_index, pf_q, err);
3509                 return -ENOMEM;
3510         }
3511
3512         /* set the context in the HMC */
3513         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
3514         if (err) {
3515                 dev_info(&vsi->back->pdev->dev,
3516                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
3517                          ring->queue_index, pf_q, err);
3518                 return -ENOMEM;
3519         }
3520
3521         /* configure Rx buffer alignment */
3522         if (!vsi->netdev || (vsi->back->flags & I40E_FLAG_LEGACY_RX))
3523                 clear_ring_build_skb_enabled(ring);
3524         else
3525                 set_ring_build_skb_enabled(ring);
3526
3527         ring->rx_offset = i40e_rx_offset(ring);
3528
3529         /* cache tail for quicker writes, and clear the reg before use */
3530         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
3531         writel(0, ring->tail);
3532
3533         if (ring->xsk_pool) {
3534                 xsk_pool_set_rxq_info(ring->xsk_pool, &ring->xdp_rxq);
3535                 ok = i40e_alloc_rx_buffers_zc(ring, I40E_DESC_UNUSED(ring));
3536         } else {
3537                 ok = !i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
3538         }
3539         if (!ok) {
3540                 /* Log this in case the user has forgotten to give the kernel
3541                  * any buffers, even later in the application.
3542                  */
3543                 dev_info(&vsi->back->pdev->dev,
3544                          "Failed to allocate some buffers on %sRx ring %d (pf_q %d)\n",
3545                          ring->xsk_pool ? "AF_XDP ZC enabled " : "",
3546                          ring->queue_index, pf_q);
3547         }
3548
3549         return 0;
3550 }
3551
3552 /**
3553  * i40e_vsi_configure_tx - Configure the VSI for Tx
3554  * @vsi: VSI structure describing this set of rings and resources
3555  *
3556  * Configure the Tx VSI for operation.
3557  **/
3558 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
3559 {
3560         int err = 0;
3561         u16 i;
3562
3563         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
3564                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
3565
3566         if (err || !i40e_enabled_xdp_vsi(vsi))
3567                 return err;
3568
3569         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
3570                 err = i40e_configure_tx_ring(vsi->xdp_rings[i]);
3571
3572         return err;
3573 }
3574
3575 /**
3576  * i40e_vsi_configure_rx - Configure the VSI for Rx
3577  * @vsi: the VSI being configured
3578  *
3579  * Configure the Rx VSI for operation.
3580  **/
3581 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
3582 {
3583         int err = 0;
3584         u16 i;
3585
3586         if (!vsi->netdev || (vsi->back->flags & I40E_FLAG_LEGACY_RX)) {
3587                 vsi->max_frame = I40E_MAX_RXBUFFER;
3588                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
3589 #if (PAGE_SIZE < 8192)
3590         } else if (!I40E_2K_TOO_SMALL_WITH_PADDING &&
3591                    (vsi->netdev->mtu <= ETH_DATA_LEN)) {
3592                 vsi->max_frame = I40E_RXBUFFER_1536 - NET_IP_ALIGN;
3593                 vsi->rx_buf_len = I40E_RXBUFFER_1536 - NET_IP_ALIGN;
3594 #endif
3595         } else {
3596                 vsi->max_frame = I40E_MAX_RXBUFFER;
3597                 vsi->rx_buf_len = (PAGE_SIZE < 8192) ? I40E_RXBUFFER_3072 :
3598                                                        I40E_RXBUFFER_2048;
3599         }
3600
3601         /* set up individual rings */
3602         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3603                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
3604
3605         return err;
3606 }
3607
3608 /**
3609  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
3610  * @vsi: ptr to the VSI
3611  **/
3612 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
3613 {
3614         struct i40e_ring *tx_ring, *rx_ring;
3615         u16 qoffset, qcount;
3616         int i, n;
3617
3618         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
3619                 /* Reset the TC information */
3620                 for (i = 0; i < vsi->num_queue_pairs; i++) {
3621                         rx_ring = vsi->rx_rings[i];
3622                         tx_ring = vsi->tx_rings[i];
3623                         rx_ring->dcb_tc = 0;
3624                         tx_ring->dcb_tc = 0;
3625                 }
3626                 return;
3627         }
3628
3629         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
3630                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
3631                         continue;
3632
3633                 qoffset = vsi->tc_config.tc_info[n].qoffset;
3634                 qcount = vsi->tc_config.tc_info[n].qcount;
3635                 for (i = qoffset; i < (qoffset + qcount); i++) {
3636                         rx_ring = vsi->rx_rings[i];
3637                         tx_ring = vsi->tx_rings[i];
3638                         rx_ring->dcb_tc = n;
3639                         tx_ring->dcb_tc = n;
3640                 }
3641         }
3642 }
3643
3644 /**
3645  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
3646  * @vsi: ptr to the VSI
3647  **/
3648 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
3649 {
3650         if (vsi->netdev)
3651                 i40e_set_rx_mode(vsi->netdev);
3652 }
3653
3654 /**
3655  * i40e_reset_fdir_filter_cnt - Reset flow director filter counters
3656  * @pf: Pointer to the targeted PF
3657  *
3658  * Set all flow director counters to 0.
3659  */
3660 static void i40e_reset_fdir_filter_cnt(struct i40e_pf *pf)
3661 {
3662         pf->fd_tcp4_filter_cnt = 0;
3663         pf->fd_udp4_filter_cnt = 0;
3664         pf->fd_sctp4_filter_cnt = 0;
3665         pf->fd_ip4_filter_cnt = 0;
3666         pf->fd_tcp6_filter_cnt = 0;
3667         pf->fd_udp6_filter_cnt = 0;
3668         pf->fd_sctp6_filter_cnt = 0;
3669         pf->fd_ip6_filter_cnt = 0;
3670 }
3671
3672 /**
3673  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
3674  * @vsi: Pointer to the targeted VSI
3675  *
3676  * This function replays the hlist on the hw where all the SB Flow Director
3677  * filters were saved.
3678  **/
3679 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
3680 {
3681         struct i40e_fdir_filter *filter;
3682         struct i40e_pf *pf = vsi->back;
3683         struct hlist_node *node;
3684
3685         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
3686                 return;
3687
3688         /* Reset FDir counters as we're replaying all existing filters */
3689         i40e_reset_fdir_filter_cnt(pf);
3690
3691         hlist_for_each_entry_safe(filter, node,
3692                                   &pf->fdir_filter_list, fdir_node) {
3693                 i40e_add_del_fdir(vsi, filter, true);
3694         }
3695 }
3696
3697 /**
3698  * i40e_vsi_configure - Set up the VSI for action
3699  * @vsi: the VSI being configured
3700  **/
3701 static int i40e_vsi_configure(struct i40e_vsi *vsi)
3702 {
3703         int err;
3704
3705         i40e_set_vsi_rx_mode(vsi);
3706         i40e_restore_vlan(vsi);
3707         i40e_vsi_config_dcb_rings(vsi);
3708         err = i40e_vsi_configure_tx(vsi);
3709         if (!err)
3710                 err = i40e_vsi_configure_rx(vsi);
3711
3712         return err;
3713 }
3714
3715 /**
3716  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
3717  * @vsi: the VSI being configured
3718  **/
3719 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
3720 {
3721         bool has_xdp = i40e_enabled_xdp_vsi(vsi);
3722         struct i40e_pf *pf = vsi->back;
3723         struct i40e_hw *hw = &pf->hw;
3724         u16 vector;
3725         int i, q;
3726         u32 qp;
3727
3728         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
3729          * and PFINT_LNKLSTn registers, e.g.:
3730          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
3731          */
3732         qp = vsi->base_queue;
3733         vector = vsi->base_vector;
3734         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
3735                 struct i40e_q_vector *q_vector = vsi->q_vectors[i];
3736
3737                 q_vector->rx.next_update = jiffies + 1;
3738                 q_vector->rx.target_itr =
3739                         ITR_TO_REG(vsi->rx_rings[i]->itr_setting);
3740                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
3741                      q_vector->rx.target_itr >> 1);
3742                 q_vector->rx.current_itr = q_vector->rx.target_itr;
3743
3744                 q_vector->tx.next_update = jiffies + 1;
3745                 q_vector->tx.target_itr =
3746                         ITR_TO_REG(vsi->tx_rings[i]->itr_setting);
3747                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
3748                      q_vector->tx.target_itr >> 1);
3749                 q_vector->tx.current_itr = q_vector->tx.target_itr;
3750
3751                 wr32(hw, I40E_PFINT_RATEN(vector - 1),
3752                      i40e_intrl_usec_to_reg(vsi->int_rate_limit));
3753
3754                 /* Linked list for the queuepairs assigned to this vector */
3755                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
3756                 for (q = 0; q < q_vector->num_ringpairs; q++) {
3757                         u32 nextqp = has_xdp ? qp + vsi->alloc_queue_pairs : qp;
3758                         u32 val;
3759
3760                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3761                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3762                               (vector << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
3763                               (nextqp << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) |
3764                               (I40E_QUEUE_TYPE_TX <<
3765                                I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
3766
3767                         wr32(hw, I40E_QINT_RQCTL(qp), val);
3768
3769                         if (has_xdp) {
3770                                 val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3771                                       (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3772                                       (vector << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3773                                       (qp << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT) |
3774                                       (I40E_QUEUE_TYPE_TX <<
3775                                        I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3776
3777                                 wr32(hw, I40E_QINT_TQCTL(nextqp), val);
3778                         }
3779
3780                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3781                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3782                               (vector << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3783                               ((qp + 1) << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT) |
3784                               (I40E_QUEUE_TYPE_RX <<
3785                                I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3786
3787                         /* Terminate the linked list */
3788                         if (q == (q_vector->num_ringpairs - 1))
3789                                 val |= (I40E_QUEUE_END_OF_LIST <<
3790                                         I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3791
3792                         wr32(hw, I40E_QINT_TQCTL(qp), val);
3793                         qp++;
3794                 }
3795         }
3796
3797         i40e_flush(hw);
3798 }
3799
3800 /**
3801  * i40e_enable_misc_int_causes - enable the non-queue interrupts
3802  * @pf: pointer to private device data structure
3803  **/
3804 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
3805 {
3806         struct i40e_hw *hw = &pf->hw;
3807         u32 val;
3808
3809         /* clear things first */
3810         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
3811         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
3812
3813         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
3814               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
3815               I40E_PFINT_ICR0_ENA_GRST_MASK          |
3816               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
3817               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
3818               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
3819               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
3820               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3821
3822         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
3823                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3824
3825         if (pf->flags & I40E_FLAG_PTP)
3826                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3827
3828         wr32(hw, I40E_PFINT_ICR0_ENA, val);
3829
3830         /* SW_ITR_IDX = 0, but don't change INTENA */
3831         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
3832                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
3833
3834         /* OTHER_ITR_IDX = 0 */
3835         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
3836 }
3837
3838 /**
3839  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
3840  * @vsi: the VSI being configured
3841  **/
3842 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3843 {
3844         u32 nextqp = i40e_enabled_xdp_vsi(vsi) ? vsi->alloc_queue_pairs : 0;
3845         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3846         struct i40e_pf *pf = vsi->back;
3847         struct i40e_hw *hw = &pf->hw;
3848         u32 val;
3849
3850         /* set the ITR configuration */
3851         q_vector->rx.next_update = jiffies + 1;
3852         q_vector->rx.target_itr = ITR_TO_REG(vsi->rx_rings[0]->itr_setting);
3853         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.target_itr >> 1);
3854         q_vector->rx.current_itr = q_vector->rx.target_itr;
3855         q_vector->tx.next_update = jiffies + 1;
3856         q_vector->tx.target_itr = ITR_TO_REG(vsi->tx_rings[0]->itr_setting);
3857         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.target_itr >> 1);
3858         q_vector->tx.current_itr = q_vector->tx.target_itr;
3859
3860         i40e_enable_misc_int_causes(pf);
3861
3862         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3863         wr32(hw, I40E_PFINT_LNKLST0, 0);
3864
3865         /* Associate the queue pair to the vector and enable the queue int */
3866         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                   |
3867               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
3868               (nextqp      << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
3869               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3870
3871         wr32(hw, I40E_QINT_RQCTL(0), val);
3872
3873         if (i40e_enabled_xdp_vsi(vsi)) {
3874                 val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                 |
3875                       (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)|
3876                       (I40E_QUEUE_TYPE_TX
3877                        << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3878
3879                 wr32(hw, I40E_QINT_TQCTL(nextqp), val);
3880         }
3881
3882         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3883               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3884               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3885
3886         wr32(hw, I40E_QINT_TQCTL(0), val);
3887         i40e_flush(hw);
3888 }
3889
3890 /**
3891  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3892  * @pf: board private structure
3893  **/
3894 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3895 {
3896         struct i40e_hw *hw = &pf->hw;
3897
3898         wr32(hw, I40E_PFINT_DYN_CTL0,
3899              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3900         i40e_flush(hw);
3901 }
3902
3903 /**
3904  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3905  * @pf: board private structure
3906  **/
3907 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
3908 {
3909         struct i40e_hw *hw = &pf->hw;
3910         u32 val;
3911
3912         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3913               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
3914               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3915
3916         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3917         i40e_flush(hw);
3918 }
3919
3920 /**
3921  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3922  * @irq: interrupt number
3923  * @data: pointer to a q_vector
3924  **/
3925 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3926 {
3927         struct i40e_q_vector *q_vector = data;
3928
3929         if (!q_vector->tx.ring && !q_vector->rx.ring)
3930                 return IRQ_HANDLED;
3931
3932         napi_schedule_irqoff(&q_vector->napi);
3933
3934         return IRQ_HANDLED;
3935 }
3936
3937 /**
3938  * i40e_irq_affinity_notify - Callback for affinity changes
3939  * @notify: context as to what irq was changed
3940  * @mask: the new affinity mask
3941  *
3942  * This is a callback function used by the irq_set_affinity_notifier function
3943  * so that we may register to receive changes to the irq affinity masks.
3944  **/
3945 static void i40e_irq_affinity_notify(struct irq_affinity_notify *notify,
3946                                      const cpumask_t *mask)
3947 {
3948         struct i40e_q_vector *q_vector =
3949                 container_of(notify, struct i40e_q_vector, affinity_notify);
3950
3951         cpumask_copy(&q_vector->affinity_mask, mask);
3952 }
3953
3954 /**
3955  * i40e_irq_affinity_release - Callback for affinity notifier release
3956  * @ref: internal core kernel usage
3957  *
3958  * This is a callback function used by the irq_set_affinity_notifier function
3959  * to inform the current notification subscriber that they will no longer
3960  * receive notifications.
3961  **/
3962 static void i40e_irq_affinity_release(struct kref *ref) {}
3963
3964 /**
3965  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3966  * @vsi: the VSI being configured
3967  * @basename: name for the vector
3968  *
3969  * Allocates MSI-X vectors and requests interrupts from the kernel.
3970  **/
3971 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3972 {
3973         int q_vectors = vsi->num_q_vectors;
3974         struct i40e_pf *pf = vsi->back;
3975         int base = vsi->base_vector;
3976         int rx_int_idx = 0;
3977         int tx_int_idx = 0;
3978         int vector, err;
3979         int irq_num;
3980         int cpu;
3981
3982         for (vector = 0; vector < q_vectors; vector++) {
3983                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3984
3985                 irq_num = pf->msix_entries[base + vector].vector;
3986
3987                 if (q_vector->tx.ring && q_vector->rx.ring) {
3988                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3989                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3990                         tx_int_idx++;
3991                 } else if (q_vector->rx.ring) {
3992                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3993                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3994                 } else if (q_vector->tx.ring) {
3995                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3996                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3997                 } else {
3998                         /* skip this unused q_vector */
3999                         continue;
4000                 }
4001                 err = request_irq(irq_num,
4002                                   vsi->irq_handler,
4003                                   0,
4004                                   q_vector->name,
4005                                   q_vector);
4006                 if (err) {
4007                         dev_info(&pf->pdev->dev,
4008                                  "MSIX request_irq failed, error: %d\n", err);
4009                         goto free_queue_irqs;
4010                 }
4011
4012                 /* register for affinity change notifications */
4013                 q_vector->affinity_notify.notify = i40e_irq_affinity_notify;
4014                 q_vector->affinity_notify.release = i40e_irq_affinity_release;
4015                 irq_set_affinity_notifier(irq_num, &q_vector->affinity_notify);
4016                 /* Spread affinity hints out across online CPUs.
4017                  *
4018                  * get_cpu_mask returns a static constant mask with
4019                  * a permanent lifetime so it's ok to pass to
4020                  * irq_update_affinity_hint without making a copy.
4021                  */
4022                 cpu = cpumask_local_spread(q_vector->v_idx, -1);
4023                 irq_update_affinity_hint(irq_num, get_cpu_mask(cpu));
4024         }
4025
4026         vsi->irqs_ready = true;
4027         return 0;
4028
4029 free_queue_irqs:
4030         while (vector) {
4031                 vector--;
4032                 irq_num = pf->msix_entries[base + vector].vector;
4033                 irq_set_affinity_notifier(irq_num, NULL);
4034                 irq_update_affinity_hint(irq_num, NULL);
4035                 free_irq(irq_num, &vsi->q_vectors[vector]);
4036         }
4037         return err;
4038 }
4039
4040 /**
4041  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
4042  * @vsi: the VSI being un-configured
4043  **/
4044 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
4045 {
4046         struct i40e_pf *pf = vsi->back;
4047         struct i40e_hw *hw = &pf->hw;
4048         int base = vsi->base_vector;
4049         int i;
4050
4051         /* disable interrupt causation from each queue */
4052         for (i = 0; i < vsi->num_queue_pairs; i++) {
4053                 u32 val;
4054
4055                 val = rd32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx));
4056                 val &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
4057                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), val);
4058
4059                 val = rd32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx));
4060                 val &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
4061                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), val);
4062
4063                 if (!i40e_enabled_xdp_vsi(vsi))
4064                         continue;
4065                 wr32(hw, I40E_QINT_TQCTL(vsi->xdp_rings[i]->reg_idx), 0);
4066         }
4067
4068         /* disable each interrupt */
4069         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4070                 for (i = vsi->base_vector;
4071                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
4072                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
4073
4074                 i40e_flush(hw);
4075                 for (i = 0; i < vsi->num_q_vectors; i++)
4076                         synchronize_irq(pf->msix_entries[i + base].vector);
4077         } else {
4078                 /* Legacy and MSI mode - this stops all interrupt handling */
4079                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
4080                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
4081                 i40e_flush(hw);
4082                 synchronize_irq(pf->pdev->irq);
4083         }
4084 }
4085
4086 /**
4087  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
4088  * @vsi: the VSI being configured
4089  **/
4090 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
4091 {
4092         struct i40e_pf *pf = vsi->back;
4093         int i;
4094
4095         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4096                 for (i = 0; i < vsi->num_q_vectors; i++)
4097                         i40e_irq_dynamic_enable(vsi, i);
4098         } else {
4099                 i40e_irq_dynamic_enable_icr0(pf);
4100         }
4101
4102         i40e_flush(&pf->hw);
4103         return 0;
4104 }
4105
4106 /**
4107  * i40e_free_misc_vector - Free the vector that handles non-queue events
4108  * @pf: board private structure
4109  **/
4110 static void i40e_free_misc_vector(struct i40e_pf *pf)
4111 {
4112         /* Disable ICR 0 */
4113         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
4114         i40e_flush(&pf->hw);
4115
4116         if (pf->flags & I40E_FLAG_MSIX_ENABLED && pf->msix_entries) {
4117                 synchronize_irq(pf->msix_entries[0].vector);
4118                 free_irq(pf->msix_entries[0].vector, pf);
4119                 clear_bit(__I40E_MISC_IRQ_REQUESTED, pf->state);
4120         }
4121 }
4122
4123 /**
4124  * i40e_intr - MSI/Legacy and non-queue interrupt handler
4125  * @irq: interrupt number
4126  * @data: pointer to a q_vector
4127  *
4128  * This is the handler used for all MSI/Legacy interrupts, and deals
4129  * with both queue and non-queue interrupts.  This is also used in
4130  * MSIX mode to handle the non-queue interrupts.
4131  **/
4132 static irqreturn_t i40e_intr(int irq, void *data)
4133 {
4134         struct i40e_pf *pf = (struct i40e_pf *)data;
4135         struct i40e_hw *hw = &pf->hw;
4136         irqreturn_t ret = IRQ_NONE;
4137         u32 icr0, icr0_remaining;
4138         u32 val, ena_mask;
4139
4140         icr0 = rd32(hw, I40E_PFINT_ICR0);
4141         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
4142
4143         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
4144         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
4145                 goto enable_intr;
4146
4147         /* if interrupt but no bits showing, must be SWINT */
4148         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
4149             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
4150                 pf->sw_int_count++;
4151
4152         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
4153             (icr0 & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
4154                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
4155                 dev_dbg(&pf->pdev->dev, "cleared PE_CRITERR\n");
4156                 set_bit(__I40E_CORE_RESET_REQUESTED, pf->state);
4157         }
4158
4159         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
4160         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
4161                 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
4162                 struct i40e_q_vector *q_vector = vsi->q_vectors[0];
4163
4164                 /* We do not have a way to disarm Queue causes while leaving
4165                  * interrupt enabled for all other causes, ideally
4166                  * interrupt should be disabled while we are in NAPI but
4167                  * this is not a performance path and napi_schedule()
4168                  * can deal with rescheduling.
4169                  */
4170                 if (!test_bit(__I40E_DOWN, pf->state))
4171                         napi_schedule_irqoff(&q_vector->napi);
4172         }
4173
4174         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
4175                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
4176                 set_bit(__I40E_ADMINQ_EVENT_PENDING, pf->state);
4177                 i40e_debug(&pf->hw, I40E_DEBUG_NVM, "AdminQ event\n");
4178         }
4179
4180         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
4181                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
4182                 set_bit(__I40E_MDD_EVENT_PENDING, pf->state);
4183         }
4184
4185         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
4186                 /* disable any further VFLR event notifications */
4187                 if (test_bit(__I40E_VF_RESETS_DISABLED, pf->state)) {
4188                         u32 reg = rd32(hw, I40E_PFINT_ICR0_ENA);
4189
4190                         reg &= ~I40E_PFINT_ICR0_VFLR_MASK;
4191                         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
4192                 } else {
4193                         ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
4194                         set_bit(__I40E_VFLR_EVENT_PENDING, pf->state);
4195                 }
4196         }
4197
4198         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
4199                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state))
4200                         set_bit(__I40E_RESET_INTR_RECEIVED, pf->state);
4201                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
4202                 val = rd32(hw, I40E_GLGEN_RSTAT);
4203                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
4204                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
4205                 if (val == I40E_RESET_CORER) {
4206                         pf->corer_count++;
4207                 } else if (val == I40E_RESET_GLOBR) {
4208                         pf->globr_count++;
4209                 } else if (val == I40E_RESET_EMPR) {
4210                         pf->empr_count++;
4211                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, pf->state);
4212                 }
4213         }
4214
4215         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
4216                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
4217                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
4218                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
4219                          rd32(hw, I40E_PFHMC_ERRORINFO),
4220                          rd32(hw, I40E_PFHMC_ERRORDATA));
4221         }
4222
4223         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
4224                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
4225
4226                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_EVENT0_MASK)
4227                         schedule_work(&pf->ptp_extts0_work);
4228
4229                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK)
4230                         i40e_ptp_tx_hwtstamp(pf);
4231
4232                 icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
4233         }
4234
4235         /* If a critical error is pending we have no choice but to reset the
4236          * device.
4237          * Report and mask out any remaining unexpected interrupts.
4238          */
4239         icr0_remaining = icr0 & ena_mask;
4240         if (icr0_remaining) {
4241                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
4242                          icr0_remaining);
4243                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
4244                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
4245                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
4246                         dev_info(&pf->pdev->dev, "device will be reset\n");
4247                         set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
4248                         i40e_service_event_schedule(pf);
4249                 }
4250                 ena_mask &= ~icr0_remaining;
4251         }
4252         ret = IRQ_HANDLED;
4253
4254 enable_intr:
4255         /* re-enable interrupt causes */
4256         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
4257         if (!test_bit(__I40E_DOWN, pf->state) ||
4258             test_bit(__I40E_RECOVERY_MODE, pf->state)) {
4259                 i40e_service_event_schedule(pf);
4260                 i40e_irq_dynamic_enable_icr0(pf);
4261         }
4262
4263         return ret;
4264 }
4265
4266 /**
4267  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
4268  * @tx_ring:  tx ring to clean
4269  * @budget:   how many cleans we're allowed
4270  *
4271  * Returns true if there's any budget left (e.g. the clean is finished)
4272  **/
4273 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
4274 {
4275         struct i40e_vsi *vsi = tx_ring->vsi;
4276         u16 i = tx_ring->next_to_clean;
4277         struct i40e_tx_buffer *tx_buf;
4278         struct i40e_tx_desc *tx_desc;
4279
4280         tx_buf = &tx_ring->tx_bi[i];
4281         tx_desc = I40E_TX_DESC(tx_ring, i);
4282         i -= tx_ring->count;
4283
4284         do {
4285                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
4286
4287                 /* if next_to_watch is not set then there is no work pending */
4288                 if (!eop_desc)
4289                         break;
4290
4291                 /* prevent any other reads prior to eop_desc */
4292                 smp_rmb();
4293
4294                 /* if the descriptor isn't done, no work yet to do */
4295                 if (!(eop_desc->cmd_type_offset_bsz &
4296                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
4297                         break;
4298
4299                 /* clear next_to_watch to prevent false hangs */
4300                 tx_buf->next_to_watch = NULL;
4301
4302                 tx_desc->buffer_addr = 0;
4303                 tx_desc->cmd_type_offset_bsz = 0;
4304                 /* move past filter desc */
4305                 tx_buf++;
4306                 tx_desc++;
4307                 i++;
4308                 if (unlikely(!i)) {
4309                         i -= tx_ring->count;
4310                         tx_buf = tx_ring->tx_bi;
4311                         tx_desc = I40E_TX_DESC(tx_ring, 0);
4312                 }
4313                 /* unmap skb header data */
4314                 dma_unmap_single(tx_ring->dev,
4315                                  dma_unmap_addr(tx_buf, dma),
4316                                  dma_unmap_len(tx_buf, len),
4317                                  DMA_TO_DEVICE);
4318                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
4319                         kfree(tx_buf->raw_buf);
4320
4321                 tx_buf->raw_buf = NULL;
4322                 tx_buf->tx_flags = 0;
4323                 tx_buf->next_to_watch = NULL;
4324                 dma_unmap_len_set(tx_buf, len, 0);
4325                 tx_desc->buffer_addr = 0;
4326                 tx_desc->cmd_type_offset_bsz = 0;
4327
4328                 /* move us past the eop_desc for start of next FD desc */
4329                 tx_buf++;
4330                 tx_desc++;
4331                 i++;
4332                 if (unlikely(!i)) {
4333                         i -= tx_ring->count;
4334                         tx_buf = tx_ring->tx_bi;
4335                         tx_desc = I40E_TX_DESC(tx_ring, 0);
4336                 }
4337
4338                 /* update budget accounting */
4339                 budget--;
4340         } while (likely(budget));
4341
4342         i += tx_ring->count;
4343         tx_ring->next_to_clean = i;
4344
4345         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
4346                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
4347
4348         return budget > 0;
4349 }
4350
4351 /**
4352  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
4353  * @irq: interrupt number
4354  * @data: pointer to a q_vector
4355  **/
4356 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
4357 {
4358         struct i40e_q_vector *q_vector = data;
4359         struct i40e_vsi *vsi;
4360
4361         if (!q_vector->tx.ring)
4362                 return IRQ_HANDLED;
4363
4364         vsi = q_vector->tx.ring->vsi;
4365         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
4366
4367         return IRQ_HANDLED;
4368 }
4369
4370 /**
4371  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
4372  * @vsi: the VSI being configured
4373  * @v_idx: vector index
4374  * @qp_idx: queue pair index
4375  **/
4376 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
4377 {
4378         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4379         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
4380         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
4381
4382         tx_ring->q_vector = q_vector;
4383         tx_ring->next = q_vector->tx.ring;
4384         q_vector->tx.ring = tx_ring;
4385         q_vector->tx.count++;
4386
4387         /* Place XDP Tx ring in the same q_vector ring list as regular Tx */
4388         if (i40e_enabled_xdp_vsi(vsi)) {
4389                 struct i40e_ring *xdp_ring = vsi->xdp_rings[qp_idx];
4390
4391                 xdp_ring->q_vector = q_vector;
4392                 xdp_ring->next = q_vector->tx.ring;
4393                 q_vector->tx.ring = xdp_ring;
4394                 q_vector->tx.count++;
4395         }
4396
4397         rx_ring->q_vector = q_vector;
4398         rx_ring->next = q_vector->rx.ring;
4399         q_vector->rx.ring = rx_ring;
4400         q_vector->rx.count++;
4401 }
4402
4403 /**
4404  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
4405  * @vsi: the VSI being configured
4406  *
4407  * This function maps descriptor rings to the queue-specific vectors
4408  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
4409  * one vector per queue pair, but on a constrained vector budget, we
4410  * group the queue pairs as "efficiently" as possible.
4411  **/
4412 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
4413 {
4414         int qp_remaining = vsi->num_queue_pairs;
4415         int q_vectors = vsi->num_q_vectors;
4416         int num_ringpairs;
4417         int v_start = 0;
4418         int qp_idx = 0;
4419
4420         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
4421          * group them so there are multiple queues per vector.
4422          * It is also important to go through all the vectors available to be
4423          * sure that if we don't use all the vectors, that the remaining vectors
4424          * are cleared. This is especially important when decreasing the
4425          * number of queues in use.
4426          */
4427         for (; v_start < q_vectors; v_start++) {
4428                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
4429
4430                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
4431
4432                 q_vector->num_ringpairs = num_ringpairs;
4433                 q_vector->reg_idx = q_vector->v_idx + vsi->base_vector - 1;
4434
4435                 q_vector->rx.count = 0;
4436                 q_vector->tx.count = 0;
4437                 q_vector->rx.ring = NULL;
4438                 q_vector->tx.ring = NULL;
4439
4440                 while (num_ringpairs--) {
4441                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
4442                         qp_idx++;
4443                         qp_remaining--;
4444                 }
4445         }
4446 }
4447
4448 /**
4449  * i40e_vsi_request_irq - Request IRQ from the OS
4450  * @vsi: the VSI being configured
4451  * @basename: name for the vector
4452  **/
4453 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
4454 {
4455         struct i40e_pf *pf = vsi->back;
4456         int err;
4457
4458         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4459                 err = i40e_vsi_request_irq_msix(vsi, basename);
4460         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
4461                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
4462                                   pf->int_name, pf);
4463         else
4464                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
4465                                   pf->int_name, pf);
4466
4467         if (err)
4468                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
4469
4470         return err;
4471 }
4472
4473 #ifdef CONFIG_NET_POLL_CONTROLLER
4474 /**
4475  * i40e_netpoll - A Polling 'interrupt' handler
4476  * @netdev: network interface device structure
4477  *
4478  * This is used by netconsole to send skbs without having to re-enable
4479  * interrupts.  It's not called while the normal interrupt routine is executing.
4480  **/
4481 static void i40e_netpoll(struct net_device *netdev)
4482 {
4483         struct i40e_netdev_priv *np = netdev_priv(netdev);
4484         struct i40e_vsi *vsi = np->vsi;
4485         struct i40e_pf *pf = vsi->back;
4486         int i;
4487
4488         /* if interface is down do nothing */
4489         if (test_bit(__I40E_VSI_DOWN, vsi->state))
4490                 return;
4491
4492         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4493                 for (i = 0; i < vsi->num_q_vectors; i++)
4494                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
4495         } else {
4496                 i40e_intr(pf->pdev->irq, netdev);
4497         }
4498 }
4499 #endif
4500
4501 #define I40E_QTX_ENA_WAIT_COUNT 50
4502
4503 /**
4504  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
4505  * @pf: the PF being configured
4506  * @pf_q: the PF queue
4507  * @enable: enable or disable state of the queue
4508  *
4509  * This routine will wait for the given Tx queue of the PF to reach the
4510  * enabled or disabled state.
4511  * Returns -ETIMEDOUT in case of failing to reach the requested state after
4512  * multiple retries; else will return 0 in case of success.
4513  **/
4514 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
4515 {
4516         int i;
4517         u32 tx_reg;
4518
4519         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
4520                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
4521                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
4522                         break;
4523
4524                 usleep_range(10, 20);
4525         }
4526         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
4527                 return -ETIMEDOUT;
4528
4529         return 0;
4530 }
4531
4532 /**
4533  * i40e_control_tx_q - Start or stop a particular Tx queue
4534  * @pf: the PF structure
4535  * @pf_q: the PF queue to configure
4536  * @enable: start or stop the queue
4537  *
4538  * This function enables or disables a single queue. Note that any delay
4539  * required after the operation is expected to be handled by the caller of
4540  * this function.
4541  **/
4542 static void i40e_control_tx_q(struct i40e_pf *pf, int pf_q, bool enable)
4543 {
4544         struct i40e_hw *hw = &pf->hw;
4545         u32 tx_reg;
4546         int i;
4547
4548         /* warn the TX unit of coming changes */
4549         i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
4550         if (!enable)
4551                 usleep_range(10, 20);
4552
4553         for (i = 0; i < I40E_QTX_ENA_WAIT_COUNT; i++) {
4554                 tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
4555                 if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
4556                     ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
4557                         break;
4558                 usleep_range(1000, 2000);
4559         }
4560
4561         /* Skip if the queue is already in the requested state */
4562         if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
4563                 return;
4564
4565         /* turn on/off the queue */
4566         if (enable) {
4567                 wr32(hw, I40E_QTX_HEAD(pf_q), 0);
4568                 tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
4569         } else {
4570                 tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
4571         }
4572
4573         wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
4574 }
4575
4576 /**
4577  * i40e_control_wait_tx_q - Start/stop Tx queue and wait for completion
4578  * @seid: VSI SEID
4579  * @pf: the PF structure
4580  * @pf_q: the PF queue to configure
4581  * @is_xdp: true if the queue is used for XDP
4582  * @enable: start or stop the queue
4583  **/
4584 int i40e_control_wait_tx_q(int seid, struct i40e_pf *pf, int pf_q,
4585                            bool is_xdp, bool enable)
4586 {
4587         int ret;
4588
4589         i40e_control_tx_q(pf, pf_q, enable);
4590
4591         /* wait for the change to finish */
4592         ret = i40e_pf_txq_wait(pf, pf_q, enable);
4593         if (ret) {
4594                 dev_info(&pf->pdev->dev,
4595                          "VSI seid %d %sTx ring %d %sable timeout\n",
4596                          seid, (is_xdp ? "XDP " : ""), pf_q,
4597                          (enable ? "en" : "dis"));
4598         }
4599
4600         return ret;
4601 }
4602
4603 /**
4604  * i40e_vsi_enable_tx - Start a VSI's rings
4605  * @vsi: the VSI being configured
4606  **/
4607 static int i40e_vsi_enable_tx(struct i40e_vsi *vsi)
4608 {
4609         struct i40e_pf *pf = vsi->back;
4610         int i, pf_q, ret = 0;
4611
4612         pf_q = vsi->base_queue;
4613         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4614                 ret = i40e_control_wait_tx_q(vsi->seid, pf,
4615                                              pf_q,
4616                                              false /*is xdp*/, true);
4617                 if (ret)
4618                         break;
4619
4620                 if (!i40e_enabled_xdp_vsi(vsi))
4621                         continue;
4622
4623                 ret = i40e_control_wait_tx_q(vsi->seid, pf,
4624                                              pf_q + vsi->alloc_queue_pairs,
4625                                              true /*is xdp*/, true);
4626                 if (ret)
4627                         break;
4628         }
4629         return ret;
4630 }
4631
4632 /**
4633  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
4634  * @pf: the PF being configured
4635  * @pf_q: the PF queue
4636  * @enable: enable or disable state of the queue
4637  *
4638  * This routine will wait for the given Rx queue of the PF to reach the
4639  * enabled or disabled state.
4640  * Returns -ETIMEDOUT in case of failing to reach the requested state after
4641  * multiple retries; else will return 0 in case of success.
4642  **/
4643 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
4644 {
4645         int i;
4646         u32 rx_reg;
4647
4648         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
4649                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
4650                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
4651                         break;
4652
4653                 usleep_range(10, 20);
4654         }
4655         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
4656                 return -ETIMEDOUT;
4657
4658         return 0;
4659 }
4660
4661 /**
4662  * i40e_control_rx_q - Start or stop a particular Rx queue
4663  * @pf: the PF structure
4664  * @pf_q: the PF queue to configure
4665  * @enable: start or stop the queue
4666  *
4667  * This function enables or disables a single queue. Note that
4668  * any delay required after the operation is expected to be
4669  * handled by the caller of this function.
4670  **/
4671 static void i40e_control_rx_q(struct i40e_pf *pf, int pf_q, bool enable)
4672 {
4673         struct i40e_hw *hw = &pf->hw;
4674         u32 rx_reg;
4675         int i;
4676
4677         for (i = 0; i < I40E_QTX_ENA_WAIT_COUNT; i++) {
4678                 rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
4679                 if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
4680                     ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
4681                         break;
4682                 usleep_range(1000, 2000);
4683         }
4684
4685         /* Skip if the queue is already in the requested state */
4686         if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
4687                 return;
4688
4689         /* turn on/off the queue */
4690         if (enable)
4691                 rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
4692         else
4693                 rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
4694
4695         wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
4696 }
4697
4698 /**
4699  * i40e_control_wait_rx_q
4700  * @pf: the PF structure
4701  * @pf_q: queue being configured
4702  * @enable: start or stop the rings
4703  *
4704  * This function enables or disables a single queue along with waiting
4705  * for the change to finish. The caller of this function should handle
4706  * the delays needed in the case of disabling queues.
4707  **/
4708 int i40e_control_wait_rx_q(struct i40e_pf *pf, int pf_q, bool enable)
4709 {
4710         int ret = 0;
4711
4712         i40e_control_rx_q(pf, pf_q, enable);
4713
4714         /* wait for the change to finish */
4715         ret = i40e_pf_rxq_wait(pf, pf_q, enable);
4716         if (ret)
4717                 return ret;
4718
4719         return ret;
4720 }
4721
4722 /**
4723  * i40e_vsi_enable_rx - Start a VSI's rings
4724  * @vsi: the VSI being configured
4725  **/
4726 static int i40e_vsi_enable_rx(struct i40e_vsi *vsi)
4727 {
4728         struct i40e_pf *pf = vsi->back;
4729         int i, pf_q, ret = 0;
4730
4731         pf_q = vsi->base_queue;
4732         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4733                 ret = i40e_control_wait_rx_q(pf, pf_q, true);
4734                 if (ret) {
4735                         dev_info(&pf->pdev->dev,
4736                                  "VSI seid %d Rx ring %d enable timeout\n",
4737                                  vsi->seid, pf_q);
4738                         break;
4739                 }
4740         }
4741
4742         return ret;
4743 }
4744
4745 /**
4746  * i40e_vsi_start_rings - Start a VSI's rings
4747  * @vsi: the VSI being configured
4748  **/
4749 int i40e_vsi_start_rings(struct i40e_vsi *vsi)
4750 {
4751         int ret = 0;
4752
4753         /* do rx first for enable and last for disable */
4754         ret = i40e_vsi_enable_rx(vsi);
4755         if (ret)
4756                 return ret;
4757         ret = i40e_vsi_enable_tx(vsi);
4758
4759         return ret;
4760 }
4761
4762 #define I40E_DISABLE_TX_GAP_MSEC        50
4763
4764 /**
4765  * i40e_vsi_stop_rings - Stop a VSI's rings
4766  * @vsi: the VSI being configured
4767  **/
4768 void i40e_vsi_stop_rings(struct i40e_vsi *vsi)
4769 {
4770         struct i40e_pf *pf = vsi->back;
4771         int pf_q, err, q_end;
4772
4773         /* When port TX is suspended, don't wait */
4774         if (test_bit(__I40E_PORT_SUSPENDED, vsi->back->state))
4775                 return i40e_vsi_stop_rings_no_wait(vsi);
4776
4777         q_end = vsi->base_queue + vsi->num_queue_pairs;
4778         for (pf_q = vsi->base_queue; pf_q < q_end; pf_q++)
4779                 i40e_pre_tx_queue_cfg(&pf->hw, (u32)pf_q, false);
4780
4781         for (pf_q = vsi->base_queue; pf_q < q_end; pf_q++) {
4782                 err = i40e_control_wait_rx_q(pf, pf_q, false);
4783                 if (err)
4784                         dev_info(&pf->pdev->dev,
4785                                  "VSI seid %d Rx ring %d disable timeout\n",
4786                                  vsi->seid, pf_q);
4787         }
4788
4789         msleep(I40E_DISABLE_TX_GAP_MSEC);
4790         pf_q = vsi->base_queue;
4791         for (pf_q = vsi->base_queue; pf_q < q_end; pf_q++)
4792                 wr32(&pf->hw, I40E_QTX_ENA(pf_q), 0);
4793
4794         i40e_vsi_wait_queues_disabled(vsi);
4795 }
4796
4797 /**
4798  * i40e_vsi_stop_rings_no_wait - Stop a VSI's rings and do not delay
4799  * @vsi: the VSI being shutdown
4800  *
4801  * This function stops all the rings for a VSI but does not delay to verify
4802  * that rings have been disabled. It is expected that the caller is shutting
4803  * down multiple VSIs at once and will delay together for all the VSIs after
4804  * initiating the shutdown. This is particularly useful for shutting down lots
4805  * of VFs together. Otherwise, a large delay can be incurred while configuring
4806  * each VSI in serial.
4807  **/
4808 void i40e_vsi_stop_rings_no_wait(struct i40e_vsi *vsi)
4809 {
4810         struct i40e_pf *pf = vsi->back;
4811         int i, pf_q;
4812
4813         pf_q = vsi->base_queue;
4814         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4815                 i40e_control_tx_q(pf, pf_q, false);
4816                 i40e_control_rx_q(pf, pf_q, false);
4817         }
4818 }
4819
4820 /**
4821  * i40e_vsi_free_irq - Free the irq association with the OS
4822  * @vsi: the VSI being configured
4823  **/
4824 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
4825 {
4826         struct i40e_pf *pf = vsi->back;
4827         struct i40e_hw *hw = &pf->hw;
4828         int base = vsi->base_vector;
4829         u32 val, qp;
4830         int i;
4831
4832         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4833                 if (!vsi->q_vectors)
4834                         return;
4835
4836                 if (!vsi->irqs_ready)
4837                         return;
4838
4839                 vsi->irqs_ready = false;
4840                 for (i = 0; i < vsi->num_q_vectors; i++) {
4841                         int irq_num;
4842                         u16 vector;
4843
4844                         vector = i + base;
4845                         irq_num = pf->msix_entries[vector].vector;
4846
4847                         /* free only the irqs that were actually requested */
4848                         if (!vsi->q_vectors[i] ||
4849                             !vsi->q_vectors[i]->num_ringpairs)
4850                                 continue;
4851
4852                         /* clear the affinity notifier in the IRQ descriptor */
4853                         irq_set_affinity_notifier(irq_num, NULL);
4854                         /* remove our suggested affinity mask for this IRQ */
4855                         irq_update_affinity_hint(irq_num, NULL);
4856                         synchronize_irq(irq_num);
4857                         free_irq(irq_num, vsi->q_vectors[i]);
4858
4859                         /* Tear down the interrupt queue link list
4860                          *
4861                          * We know that they come in pairs and always
4862                          * the Rx first, then the Tx.  To clear the
4863                          * link list, stick the EOL value into the
4864                          * next_q field of the registers.
4865                          */
4866                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
4867                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4868                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4869                         val |= I40E_QUEUE_END_OF_LIST
4870                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4871                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
4872
4873                         while (qp != I40E_QUEUE_END_OF_LIST) {
4874                                 u32 next;
4875
4876                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4877
4878                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4879                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4880                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4881                                          I40E_QINT_RQCTL_INTEVENT_MASK);
4882
4883                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4884                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4885
4886                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4887
4888                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4889
4890                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
4891                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
4892
4893                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4894                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4895                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4896                                          I40E_QINT_TQCTL_INTEVENT_MASK);
4897
4898                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4899                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4900
4901                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4902                                 qp = next;
4903                         }
4904                 }
4905         } else {
4906                 free_irq(pf->pdev->irq, pf);
4907
4908                 val = rd32(hw, I40E_PFINT_LNKLST0);
4909                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4910                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4911                 val |= I40E_QUEUE_END_OF_LIST
4912                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
4913                 wr32(hw, I40E_PFINT_LNKLST0, val);
4914
4915                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4916                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4917                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4918                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4919                          I40E_QINT_RQCTL_INTEVENT_MASK);
4920
4921                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4922                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4923
4924                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4925
4926                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4927
4928                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4929                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4930                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4931                          I40E_QINT_TQCTL_INTEVENT_MASK);
4932
4933                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4934                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4935
4936                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4937         }
4938 }
4939
4940 /**
4941  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
4942  * @vsi: the VSI being configured
4943  * @v_idx: Index of vector to be freed
4944  *
4945  * This function frees the memory allocated to the q_vector.  In addition if
4946  * NAPI is enabled it will delete any references to the NAPI struct prior
4947  * to freeing the q_vector.
4948  **/
4949 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
4950 {
4951         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4952         struct i40e_ring *ring;
4953
4954         if (!q_vector)
4955                 return;
4956
4957         /* disassociate q_vector from rings */
4958         i40e_for_each_ring(ring, q_vector->tx)
4959                 ring->q_vector = NULL;
4960
4961         i40e_for_each_ring(ring, q_vector->rx)
4962                 ring->q_vector = NULL;
4963
4964         /* only VSI w/ an associated netdev is set up w/ NAPI */
4965         if (vsi->netdev)
4966                 netif_napi_del(&q_vector->napi);
4967
4968         vsi->q_vectors[v_idx] = NULL;
4969
4970         kfree_rcu(q_vector, rcu);
4971 }
4972
4973 /**
4974  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
4975  * @vsi: the VSI being un-configured
4976  *
4977  * This frees the memory allocated to the q_vectors and
4978  * deletes references to the NAPI struct.
4979  **/
4980 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
4981 {
4982         int v_idx;
4983
4984         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
4985                 i40e_free_q_vector(vsi, v_idx);
4986 }
4987
4988 /**
4989  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
4990  * @pf: board private structure
4991  **/
4992 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
4993 {
4994         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
4995         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4996                 pci_disable_msix(pf->pdev);
4997                 kfree(pf->msix_entries);
4998                 pf->msix_entries = NULL;
4999                 kfree(pf->irq_pile);
5000                 pf->irq_pile = NULL;
5001         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
5002                 pci_disable_msi(pf->pdev);
5003         }
5004         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
5005 }
5006
5007 /**
5008  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
5009  * @pf: board private structure
5010  *
5011  * We go through and clear interrupt specific resources and reset the structure
5012  * to pre-load conditions
5013  **/
5014 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
5015 {
5016         int i;
5017
5018         if (test_bit(__I40E_MISC_IRQ_REQUESTED, pf->state))
5019                 i40e_free_misc_vector(pf);
5020
5021         i40e_put_lump(pf->irq_pile, pf->iwarp_base_vector,
5022                       I40E_IWARP_IRQ_PILE_ID);
5023
5024         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
5025         for (i = 0; i < pf->num_alloc_vsi; i++)
5026                 if (pf->vsi[i])
5027                         i40e_vsi_free_q_vectors(pf->vsi[i]);
5028         i40e_reset_interrupt_capability(pf);
5029 }
5030
5031 /**
5032  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
5033  * @vsi: the VSI being configured
5034  **/
5035 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
5036 {
5037         int q_idx;
5038
5039         if (!vsi->netdev)
5040                 return;
5041
5042         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++) {
5043                 struct i40e_q_vector *q_vector = vsi->q_vectors[q_idx];
5044
5045                 if (q_vector->rx.ring || q_vector->tx.ring)
5046                         napi_enable(&q_vector->napi);
5047         }
5048 }
5049
5050 /**
5051  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
5052  * @vsi: the VSI being configured
5053  **/
5054 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
5055 {
5056         int q_idx;
5057
5058         if (!vsi->netdev)
5059                 return;
5060
5061         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++) {
5062                 struct i40e_q_vector *q_vector = vsi->q_vectors[q_idx];
5063
5064                 if (q_vector->rx.ring || q_vector->tx.ring)
5065                         napi_disable(&q_vector->napi);
5066         }
5067 }
5068
5069 /**
5070  * i40e_vsi_close - Shut down a VSI
5071  * @vsi: the vsi to be quelled
5072  **/
5073 static void i40e_vsi_close(struct i40e_vsi *vsi)
5074 {
5075         struct i40e_pf *pf = vsi->back;
5076         if (!test_and_set_bit(__I40E_VSI_DOWN, vsi->state))
5077                 i40e_down(vsi);
5078         i40e_vsi_free_irq(vsi);
5079         i40e_vsi_free_tx_resources(vsi);
5080         i40e_vsi_free_rx_resources(vsi);
5081         vsi->current_netdev_flags = 0;
5082         set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
5083         if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state))
5084                 set_bit(__I40E_CLIENT_RESET, pf->state);
5085 }
5086
5087 /**
5088  * i40e_quiesce_vsi - Pause a given VSI
5089  * @vsi: the VSI being paused
5090  **/
5091 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
5092 {
5093         if (test_bit(__I40E_VSI_DOWN, vsi->state))
5094                 return;
5095
5096         set_bit(__I40E_VSI_NEEDS_RESTART, vsi->state);
5097         if (vsi->netdev && netif_running(vsi->netdev))
5098                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
5099         else
5100                 i40e_vsi_close(vsi);
5101 }
5102
5103 /**
5104  * i40e_unquiesce_vsi - Resume a given VSI
5105  * @vsi: the VSI being resumed
5106  **/
5107 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
5108 {
5109         if (!test_and_clear_bit(__I40E_VSI_NEEDS_RESTART, vsi->state))
5110                 return;
5111
5112         if (vsi->netdev && netif_running(vsi->netdev))
5113                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
5114         else
5115                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
5116 }
5117
5118 /**
5119  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
5120  * @pf: the PF
5121  **/
5122 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
5123 {
5124         int v;
5125
5126         for (v = 0; v < pf->num_alloc_vsi; v++) {
5127                 if (pf->vsi[v])
5128                         i40e_quiesce_vsi(pf->vsi[v]);
5129         }
5130 }
5131
5132 /**
5133  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
5134  * @pf: the PF
5135  **/
5136 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
5137 {
5138         int v;
5139
5140         for (v = 0; v < pf->num_alloc_vsi; v++) {
5141                 if (pf->vsi[v])
5142                         i40e_unquiesce_vsi(pf->vsi[v]);
5143         }
5144 }
5145
5146 /**
5147  * i40e_vsi_wait_queues_disabled - Wait for VSI's queues to be disabled
5148  * @vsi: the VSI being configured
5149  *
5150  * Wait until all queues on a given VSI have been disabled.
5151  **/
5152 int i40e_vsi_wait_queues_disabled(struct i40e_vsi *vsi)
5153 {
5154         struct i40e_pf *pf = vsi->back;
5155         int i, pf_q, ret;
5156
5157         pf_q = vsi->base_queue;
5158         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
5159                 /* Check and wait for the Tx queue */
5160                 ret = i40e_pf_txq_wait(pf, pf_q, false);
5161                 if (ret) {
5162                         dev_info(&pf->pdev->dev,
5163                                  "VSI seid %d Tx ring %d disable timeout\n",
5164                                  vsi->seid, pf_q);
5165                         return ret;
5166                 }
5167
5168                 if (!i40e_enabled_xdp_vsi(vsi))
5169                         goto wait_rx;
5170
5171                 /* Check and wait for the XDP Tx queue */
5172                 ret = i40e_pf_txq_wait(pf, pf_q + vsi->alloc_queue_pairs,
5173                                        false);
5174                 if (ret) {
5175                         dev_info(&pf->pdev->dev,
5176                                  "VSI seid %d XDP Tx ring %d disable timeout\n",
5177                                  vsi->seid, pf_q);
5178                         return ret;
5179                 }
5180 wait_rx:
5181                 /* Check and wait for the Rx queue */
5182                 ret = i40e_pf_rxq_wait(pf, pf_q, false);
5183                 if (ret) {
5184                         dev_info(&pf->pdev->dev,
5185                                  "VSI seid %d Rx ring %d disable timeout\n",
5186                                  vsi->seid, pf_q);
5187                         return ret;
5188                 }
5189         }
5190
5191         return 0;
5192 }
5193
5194 #ifdef CONFIG_I40E_DCB
5195 /**
5196  * i40e_pf_wait_queues_disabled - Wait for all queues of PF VSIs to be disabled
5197  * @pf: the PF
5198  *
5199  * This function waits for the queues to be in disabled state for all the
5200  * VSIs that are managed by this PF.
5201  **/
5202 static int i40e_pf_wait_queues_disabled(struct i40e_pf *pf)
5203 {
5204         int v, ret = 0;
5205
5206         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
5207                 if (pf->vsi[v]) {
5208                         ret = i40e_vsi_wait_queues_disabled(pf->vsi[v]);
5209                         if (ret)
5210                                 break;
5211                 }
5212         }
5213
5214         return ret;
5215 }
5216
5217 #endif
5218
5219 /**
5220  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
5221  * @pf: pointer to PF
5222  *
5223  * Get TC map for ISCSI PF type that will include iSCSI TC
5224  * and LAN TC.
5225  **/
5226 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
5227 {
5228         struct i40e_dcb_app_priority_table app;
5229         struct i40e_hw *hw = &pf->hw;
5230         u8 enabled_tc = 1; /* TC0 is always enabled */
5231         u8 tc, i;
5232         /* Get the iSCSI APP TLV */
5233         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
5234
5235         for (i = 0; i < dcbcfg->numapps; i++) {
5236                 app = dcbcfg->app[i];
5237                 if (app.selector == I40E_APP_SEL_TCPIP &&
5238                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
5239                         tc = dcbcfg->etscfg.prioritytable[app.priority];
5240                         enabled_tc |= BIT(tc);
5241                         break;
5242                 }
5243         }
5244
5245         return enabled_tc;
5246 }
5247
5248 /**
5249  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
5250  * @dcbcfg: the corresponding DCBx configuration structure
5251  *
5252  * Return the number of TCs from given DCBx configuration
5253  **/
5254 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
5255 {
5256         int i, tc_unused = 0;
5257         u8 num_tc = 0;
5258         u8 ret = 0;
5259
5260         /* Scan the ETS Config Priority Table to find
5261          * traffic class enabled for a given priority
5262          * and create a bitmask of enabled TCs
5263          */
5264         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++)
5265                 num_tc |= BIT(dcbcfg->etscfg.prioritytable[i]);
5266
5267         /* Now scan the bitmask to check for
5268          * contiguous TCs starting with TC0
5269          */
5270         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5271                 if (num_tc & BIT(i)) {
5272                         if (!tc_unused) {
5273                                 ret++;
5274                         } else {
5275                                 pr_err("Non-contiguous TC - Disabling DCB\n");
5276                                 return 1;
5277                         }
5278                 } else {
5279                         tc_unused = 1;
5280                 }
5281         }
5282
5283         /* There is always at least TC0 */
5284         if (!ret)
5285                 ret = 1;
5286
5287         return ret;
5288 }
5289
5290 /**
5291  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
5292  * @dcbcfg: the corresponding DCBx configuration structure
5293  *
5294  * Query the current DCB configuration and return the number of
5295  * traffic classes enabled from the given DCBX config
5296  **/
5297 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
5298 {
5299         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
5300         u8 enabled_tc = 1;
5301         u8 i;
5302
5303         for (i = 0; i < num_tc; i++)
5304                 enabled_tc |= BIT(i);
5305
5306         return enabled_tc;
5307 }
5308
5309 /**
5310  * i40e_mqprio_get_enabled_tc - Get enabled traffic classes
5311  * @pf: PF being queried
5312  *
5313  * Query the current MQPRIO configuration and return the number of
5314  * traffic classes enabled.
5315  **/
5316 static u8 i40e_mqprio_get_enabled_tc(struct i40e_pf *pf)
5317 {
5318         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5319         u8 num_tc = vsi->mqprio_qopt.qopt.num_tc;
5320         u8 enabled_tc = 1, i;
5321
5322         for (i = 1; i < num_tc; i++)
5323                 enabled_tc |= BIT(i);
5324         return enabled_tc;
5325 }
5326
5327 /**
5328  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
5329  * @pf: PF being queried
5330  *
5331  * Return number of traffic classes enabled for the given PF
5332  **/
5333 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
5334 {
5335         struct i40e_hw *hw = &pf->hw;
5336         u8 i, enabled_tc = 1;
5337         u8 num_tc = 0;
5338         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
5339
5340         if (pf->flags & I40E_FLAG_TC_MQPRIO)
5341                 return pf->vsi[pf->lan_vsi]->mqprio_qopt.qopt.num_tc;
5342
5343         /* If neither MQPRIO nor DCB is enabled, then always use single TC */
5344         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
5345                 return 1;
5346
5347         /* SFP mode will be enabled for all TCs on port */
5348         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
5349                 return i40e_dcb_get_num_tc(dcbcfg);
5350
5351         /* MFP mode return count of enabled TCs for this PF */
5352         if (pf->hw.func_caps.iscsi)
5353                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
5354         else
5355                 return 1; /* Only TC0 */
5356
5357         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5358                 if (enabled_tc & BIT(i))
5359                         num_tc++;
5360         }
5361         return num_tc;
5362 }
5363
5364 /**
5365  * i40e_pf_get_tc_map - Get bitmap for enabled traffic classes
5366  * @pf: PF being queried
5367  *
5368  * Return a bitmap for enabled traffic classes for this PF.
5369  **/
5370 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
5371 {
5372         if (pf->flags & I40E_FLAG_TC_MQPRIO)
5373                 return i40e_mqprio_get_enabled_tc(pf);
5374
5375         /* If neither MQPRIO nor DCB is enabled for this PF then just return
5376          * default TC
5377          */
5378         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
5379                 return I40E_DEFAULT_TRAFFIC_CLASS;
5380
5381         /* SFP mode we want PF to be enabled for all TCs */
5382         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
5383                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
5384
5385         /* MFP enabled and iSCSI PF type */
5386         if (pf->hw.func_caps.iscsi)
5387                 return i40e_get_iscsi_tc_map(pf);
5388         else
5389                 return I40E_DEFAULT_TRAFFIC_CLASS;
5390 }
5391
5392 /**
5393  * i40e_vsi_get_bw_info - Query VSI BW Information
5394  * @vsi: the VSI being queried
5395  *
5396  * Returns 0 on success, negative value on failure
5397  **/
5398 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
5399 {
5400         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
5401         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
5402         struct i40e_pf *pf = vsi->back;
5403         struct i40e_hw *hw = &pf->hw;
5404         i40e_status ret;
5405         u32 tc_bw_max;
5406         int i;
5407
5408         /* Get the VSI level BW configuration */
5409         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
5410         if (ret) {
5411                 dev_info(&pf->pdev->dev,
5412                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
5413                          i40e_stat_str(&pf->hw, ret),
5414                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5415                 return -EINVAL;
5416         }
5417
5418         /* Get the VSI level BW configuration per TC */
5419         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
5420                                                NULL);
5421         if (ret) {
5422                 dev_info(&pf->pdev->dev,
5423                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
5424                          i40e_stat_str(&pf->hw, ret),
5425                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5426                 return -EINVAL;
5427         }
5428
5429         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
5430                 dev_info(&pf->pdev->dev,
5431                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
5432                          bw_config.tc_valid_bits,
5433                          bw_ets_config.tc_valid_bits);
5434                 /* Still continuing */
5435         }
5436
5437         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
5438         vsi->bw_max_quanta = bw_config.max_bw;
5439         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
5440                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
5441         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5442                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
5443                 vsi->bw_ets_limit_credits[i] =
5444                                         le16_to_cpu(bw_ets_config.credits[i]);
5445                 /* 3 bits out of 4 for each TC */
5446                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
5447         }
5448
5449         return 0;
5450 }
5451
5452 /**
5453  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
5454  * @vsi: the VSI being configured
5455  * @enabled_tc: TC bitmap
5456  * @bw_share: BW shared credits per TC
5457  *
5458  * Returns 0 on success, negative value on failure
5459  **/
5460 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
5461                                        u8 *bw_share)
5462 {
5463         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
5464         struct i40e_pf *pf = vsi->back;
5465         i40e_status ret;
5466         int i;
5467
5468         /* There is no need to reset BW when mqprio mode is on.  */
5469         if (pf->flags & I40E_FLAG_TC_MQPRIO)
5470                 return 0;
5471         if (!vsi->mqprio_qopt.qopt.hw && !(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5472                 ret = i40e_set_bw_limit(vsi, vsi->seid, 0);
5473                 if (ret)
5474                         dev_info(&pf->pdev->dev,
5475                                  "Failed to reset tx rate for vsi->seid %u\n",
5476                                  vsi->seid);
5477                 return ret;
5478         }
5479         memset(&bw_data, 0, sizeof(bw_data));
5480         bw_data.tc_valid_bits = enabled_tc;
5481         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
5482                 bw_data.tc_bw_credits[i] = bw_share[i];
5483
5484         ret = i40e_aq_config_vsi_tc_bw(&pf->hw, vsi->seid, &bw_data, NULL);
5485         if (ret) {
5486                 dev_info(&pf->pdev->dev,
5487                          "AQ command Config VSI BW allocation per TC failed = %d\n",
5488                          pf->hw.aq.asq_last_status);
5489                 return -EINVAL;
5490         }
5491
5492         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
5493                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
5494
5495         return 0;
5496 }
5497
5498 /**
5499  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
5500  * @vsi: the VSI being configured
5501  * @enabled_tc: TC map to be enabled
5502  *
5503  **/
5504 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
5505 {
5506         struct net_device *netdev = vsi->netdev;
5507         struct i40e_pf *pf = vsi->back;
5508         struct i40e_hw *hw = &pf->hw;
5509         u8 netdev_tc = 0;
5510         int i;
5511         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
5512
5513         if (!netdev)
5514                 return;
5515
5516         if (!enabled_tc) {
5517                 netdev_reset_tc(netdev);
5518                 return;
5519         }
5520
5521         /* Set up actual enabled TCs on the VSI */
5522         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
5523                 return;
5524
5525         /* set per TC queues for the VSI */
5526         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5527                 /* Only set TC queues for enabled tcs
5528                  *
5529                  * e.g. For a VSI that has TC0 and TC3 enabled the
5530                  * enabled_tc bitmap would be 0x00001001; the driver
5531                  * will set the numtc for netdev as 2 that will be
5532                  * referenced by the netdev layer as TC 0 and 1.
5533                  */
5534                 if (vsi->tc_config.enabled_tc & BIT(i))
5535                         netdev_set_tc_queue(netdev,
5536                                         vsi->tc_config.tc_info[i].netdev_tc,
5537                                         vsi->tc_config.tc_info[i].qcount,
5538                                         vsi->tc_config.tc_info[i].qoffset);
5539         }
5540
5541         if (pf->flags & I40E_FLAG_TC_MQPRIO)
5542                 return;
5543
5544         /* Assign UP2TC map for the VSI */
5545         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
5546                 /* Get the actual TC# for the UP */
5547                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
5548                 /* Get the mapped netdev TC# for the UP */
5549                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
5550                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
5551         }
5552 }
5553
5554 /**
5555  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
5556  * @vsi: the VSI being configured
5557  * @ctxt: the ctxt buffer returned from AQ VSI update param command
5558  **/
5559 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
5560                                       struct i40e_vsi_context *ctxt)
5561 {
5562         /* copy just the sections touched not the entire info
5563          * since not all sections are valid as returned by
5564          * update vsi params
5565          */
5566         vsi->info.mapping_flags = ctxt->info.mapping_flags;
5567         memcpy(&vsi->info.queue_mapping,
5568                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
5569         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
5570                sizeof(vsi->info.tc_mapping));
5571 }
5572
5573 /**
5574  * i40e_update_adq_vsi_queues - update queue mapping for ADq VSI
5575  * @vsi: the VSI being reconfigured
5576  * @vsi_offset: offset from main VF VSI
5577  */
5578 int i40e_update_adq_vsi_queues(struct i40e_vsi *vsi, int vsi_offset)
5579 {
5580         struct i40e_vsi_context ctxt = {};
5581         struct i40e_pf *pf;
5582         struct i40e_hw *hw;
5583         int ret;
5584
5585         if (!vsi)
5586                 return I40E_ERR_PARAM;
5587         pf = vsi->back;
5588         hw = &pf->hw;
5589
5590         ctxt.seid = vsi->seid;
5591         ctxt.pf_num = hw->pf_id;
5592         ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id + vsi_offset;
5593         ctxt.uplink_seid = vsi->uplink_seid;
5594         ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
5595         ctxt.flags = I40E_AQ_VSI_TYPE_VF;
5596         ctxt.info = vsi->info;
5597
5598         i40e_vsi_setup_queue_map(vsi, &ctxt, vsi->tc_config.enabled_tc,
5599                                  false);
5600         if (vsi->reconfig_rss) {
5601                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
5602                                       vsi->num_queue_pairs);
5603                 ret = i40e_vsi_config_rss(vsi);
5604                 if (ret) {
5605                         dev_info(&pf->pdev->dev, "Failed to reconfig rss for num_queues\n");
5606                         return ret;
5607                 }
5608                 vsi->reconfig_rss = false;
5609         }
5610
5611         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
5612         if (ret) {
5613                 dev_info(&pf->pdev->dev, "Update vsi config failed, err %s aq_err %s\n",
5614                          i40e_stat_str(hw, ret),
5615                          i40e_aq_str(hw, hw->aq.asq_last_status));
5616                 return ret;
5617         }
5618         /* update the local VSI info with updated queue map */
5619         i40e_vsi_update_queue_map(vsi, &ctxt);
5620         vsi->info.valid_sections = 0;
5621
5622         return ret;
5623 }
5624
5625 /**
5626  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
5627  * @vsi: VSI to be configured
5628  * @enabled_tc: TC bitmap
5629  *
5630  * This configures a particular VSI for TCs that are mapped to the
5631  * given TC bitmap. It uses default bandwidth share for TCs across
5632  * VSIs to configure TC for a particular VSI.
5633  *
5634  * NOTE:
5635  * It is expected that the VSI queues have been quisced before calling
5636  * this function.
5637  **/
5638 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
5639 {
5640         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
5641         struct i40e_pf *pf = vsi->back;
5642         struct i40e_hw *hw = &pf->hw;
5643         struct i40e_vsi_context ctxt;
5644         int ret = 0;
5645         int i;
5646
5647         /* Check if enabled_tc is same as existing or new TCs */
5648         if (vsi->tc_config.enabled_tc == enabled_tc &&
5649             vsi->mqprio_qopt.mode != TC_MQPRIO_MODE_CHANNEL)
5650                 return ret;
5651
5652         /* Enable ETS TCs with equal BW Share for now across all VSIs */
5653         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5654                 if (enabled_tc & BIT(i))
5655                         bw_share[i] = 1;
5656         }
5657
5658         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
5659         if (ret) {
5660                 struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
5661
5662                 dev_info(&pf->pdev->dev,
5663                          "Failed configuring TC map %d for VSI %d\n",
5664                          enabled_tc, vsi->seid);
5665                 ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid,
5666                                                   &bw_config, NULL);
5667                 if (ret) {
5668                         dev_info(&pf->pdev->dev,
5669                                  "Failed querying vsi bw info, err %s aq_err %s\n",
5670                                  i40e_stat_str(hw, ret),
5671                                  i40e_aq_str(hw, hw->aq.asq_last_status));
5672                         goto out;
5673                 }
5674                 if ((bw_config.tc_valid_bits & enabled_tc) != enabled_tc) {
5675                         u8 valid_tc = bw_config.tc_valid_bits & enabled_tc;
5676
5677                         if (!valid_tc)
5678                                 valid_tc = bw_config.tc_valid_bits;
5679                         /* Always enable TC0, no matter what */
5680                         valid_tc |= 1;
5681                         dev_info(&pf->pdev->dev,
5682                                  "Requested tc 0x%x, but FW reports 0x%x as valid. Attempting to use 0x%x.\n",
5683                                  enabled_tc, bw_config.tc_valid_bits, valid_tc);
5684                         enabled_tc = valid_tc;
5685                 }
5686
5687                 ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
5688                 if (ret) {
5689                         dev_err(&pf->pdev->dev,
5690                                 "Unable to  configure TC map %d for VSI %d\n",
5691                                 enabled_tc, vsi->seid);
5692                         goto out;
5693                 }
5694         }
5695
5696         /* Update Queue Pairs Mapping for currently enabled UPs */
5697         ctxt.seid = vsi->seid;
5698         ctxt.pf_num = vsi->back->hw.pf_id;
5699         ctxt.vf_num = 0;
5700         ctxt.uplink_seid = vsi->uplink_seid;
5701         ctxt.info = vsi->info;
5702         if (vsi->back->flags & I40E_FLAG_TC_MQPRIO) {
5703                 ret = i40e_vsi_setup_queue_map_mqprio(vsi, &ctxt, enabled_tc);
5704                 if (ret)
5705                         goto out;
5706         } else {
5707                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
5708         }
5709
5710         /* On destroying the qdisc, reset vsi->rss_size, as number of enabled
5711          * queues changed.
5712          */
5713         if (!vsi->mqprio_qopt.qopt.hw && vsi->reconfig_rss) {
5714                 vsi->rss_size = min_t(int, vsi->back->alloc_rss_size,
5715                                       vsi->num_queue_pairs);
5716                 ret = i40e_vsi_config_rss(vsi);
5717                 if (ret) {
5718                         dev_info(&vsi->back->pdev->dev,
5719                                  "Failed to reconfig rss for num_queues\n");
5720                         return ret;
5721                 }
5722                 vsi->reconfig_rss = false;
5723         }
5724         if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
5725                 ctxt.info.valid_sections |=
5726                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
5727                 ctxt.info.queueing_opt_flags |= I40E_AQ_VSI_QUE_OPT_TCP_ENA;
5728         }
5729
5730         /* Update the VSI after updating the VSI queue-mapping
5731          * information
5732          */
5733         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
5734         if (ret) {
5735                 dev_info(&pf->pdev->dev,
5736                          "Update vsi tc config failed, err %s aq_err %s\n",
5737                          i40e_stat_str(hw, ret),
5738                          i40e_aq_str(hw, hw->aq.asq_last_status));
5739                 goto out;
5740         }
5741         /* update the local VSI info with updated queue map */
5742         i40e_vsi_update_queue_map(vsi, &ctxt);
5743         vsi->info.valid_sections = 0;
5744
5745         /* Update current VSI BW information */
5746         ret = i40e_vsi_get_bw_info(vsi);
5747         if (ret) {
5748                 dev_info(&pf->pdev->dev,
5749                          "Failed updating vsi bw info, err %s aq_err %s\n",
5750                          i40e_stat_str(hw, ret),
5751                          i40e_aq_str(hw, hw->aq.asq_last_status));
5752                 goto out;
5753         }
5754
5755         /* Update the netdev TC setup */
5756         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
5757 out:
5758         return ret;
5759 }
5760
5761 /**
5762  * i40e_get_link_speed - Returns link speed for the interface
5763  * @vsi: VSI to be configured
5764  *
5765  **/
5766 static int i40e_get_link_speed(struct i40e_vsi *vsi)
5767 {
5768         struct i40e_pf *pf = vsi->back;
5769
5770         switch (pf->hw.phy.link_info.link_speed) {
5771         case I40E_LINK_SPEED_40GB:
5772                 return 40000;
5773         case I40E_LINK_SPEED_25GB:
5774                 return 25000;
5775         case I40E_LINK_SPEED_20GB:
5776                 return 20000;
5777         case I40E_LINK_SPEED_10GB:
5778                 return 10000;
5779         case I40E_LINK_SPEED_1GB:
5780                 return 1000;
5781         default:
5782                 return -EINVAL;
5783         }
5784 }
5785
5786 /**
5787  * i40e_set_bw_limit - setup BW limit for Tx traffic based on max_tx_rate
5788  * @vsi: VSI to be configured
5789  * @seid: seid of the channel/VSI
5790  * @max_tx_rate: max TX rate to be configured as BW limit
5791  *
5792  * Helper function to set BW limit for a given VSI
5793  **/
5794 int i40e_set_bw_limit(struct i40e_vsi *vsi, u16 seid, u64 max_tx_rate)
5795 {
5796         struct i40e_pf *pf = vsi->back;
5797         u64 credits = 0;
5798         int speed = 0;
5799         int ret = 0;
5800
5801         speed = i40e_get_link_speed(vsi);
5802         if (max_tx_rate > speed) {
5803                 dev_err(&pf->pdev->dev,
5804                         "Invalid max tx rate %llu specified for VSI seid %d.",
5805                         max_tx_rate, seid);
5806                 return -EINVAL;
5807         }
5808         if (max_tx_rate && max_tx_rate < 50) {
5809                 dev_warn(&pf->pdev->dev,
5810                          "Setting max tx rate to minimum usable value of 50Mbps.\n");
5811                 max_tx_rate = 50;
5812         }
5813
5814         /* Tx rate credits are in values of 50Mbps, 0 is disabled */
5815         credits = max_tx_rate;
5816         do_div(credits, I40E_BW_CREDIT_DIVISOR);
5817         ret = i40e_aq_config_vsi_bw_limit(&pf->hw, seid, credits,
5818                                           I40E_MAX_BW_INACTIVE_ACCUM, NULL);
5819         if (ret)
5820                 dev_err(&pf->pdev->dev,
5821                         "Failed set tx rate (%llu Mbps) for vsi->seid %u, err %s aq_err %s\n",
5822                         max_tx_rate, seid, i40e_stat_str(&pf->hw, ret),
5823                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5824         return ret;
5825 }
5826
5827 /**
5828  * i40e_remove_queue_channels - Remove queue channels for the TCs
5829  * @vsi: VSI to be configured
5830  *
5831  * Remove queue channels for the TCs
5832  **/
5833 static void i40e_remove_queue_channels(struct i40e_vsi *vsi)
5834 {
5835         enum i40e_admin_queue_err last_aq_status;
5836         struct i40e_cloud_filter *cfilter;
5837         struct i40e_channel *ch, *ch_tmp;
5838         struct i40e_pf *pf = vsi->back;
5839         struct hlist_node *node;
5840         int ret, i;
5841
5842         /* Reset rss size that was stored when reconfiguring rss for
5843          * channel VSIs with non-power-of-2 queue count.
5844          */
5845         vsi->current_rss_size = 0;
5846
5847         /* perform cleanup for channels if they exist */
5848         if (list_empty(&vsi->ch_list))
5849                 return;
5850
5851         list_for_each_entry_safe(ch, ch_tmp, &vsi->ch_list, list) {
5852                 struct i40e_vsi *p_vsi;
5853
5854                 list_del(&ch->list);
5855                 p_vsi = ch->parent_vsi;
5856                 if (!p_vsi || !ch->initialized) {
5857                         kfree(ch);
5858                         continue;
5859                 }
5860                 /* Reset queue contexts */
5861                 for (i = 0; i < ch->num_queue_pairs; i++) {
5862                         struct i40e_ring *tx_ring, *rx_ring;
5863                         u16 pf_q;
5864
5865                         pf_q = ch->base_queue + i;
5866                         tx_ring = vsi->tx_rings[pf_q];
5867                         tx_ring->ch = NULL;
5868
5869                         rx_ring = vsi->rx_rings[pf_q];
5870                         rx_ring->ch = NULL;
5871                 }
5872
5873                 /* Reset BW configured for this VSI via mqprio */
5874                 ret = i40e_set_bw_limit(vsi, ch->seid, 0);
5875                 if (ret)
5876                         dev_info(&vsi->back->pdev->dev,
5877                                  "Failed to reset tx rate for ch->seid %u\n",
5878                                  ch->seid);
5879
5880                 /* delete cloud filters associated with this channel */
5881                 hlist_for_each_entry_safe(cfilter, node,
5882                                           &pf->cloud_filter_list, cloud_node) {
5883                         if (cfilter->seid != ch->seid)
5884                                 continue;
5885
5886                         hash_del(&cfilter->cloud_node);
5887                         if (cfilter->dst_port)
5888                                 ret = i40e_add_del_cloud_filter_big_buf(vsi,
5889                                                                         cfilter,
5890                                                                         false);
5891                         else
5892                                 ret = i40e_add_del_cloud_filter(vsi, cfilter,
5893                                                                 false);
5894                         last_aq_status = pf->hw.aq.asq_last_status;
5895                         if (ret)
5896                                 dev_info(&pf->pdev->dev,
5897                                          "Failed to delete cloud filter, err %s aq_err %s\n",
5898                                          i40e_stat_str(&pf->hw, ret),
5899                                          i40e_aq_str(&pf->hw, last_aq_status));
5900                         kfree(cfilter);
5901                 }
5902
5903                 /* delete VSI from FW */
5904                 ret = i40e_aq_delete_element(&vsi->back->hw, ch->seid,
5905                                              NULL);
5906                 if (ret)
5907                         dev_err(&vsi->back->pdev->dev,
5908                                 "unable to remove channel (%d) for parent VSI(%d)\n",
5909                                 ch->seid, p_vsi->seid);
5910                 kfree(ch);
5911         }
5912         INIT_LIST_HEAD(&vsi->ch_list);
5913 }
5914
5915 /**
5916  * i40e_get_max_queues_for_channel
5917  * @vsi: ptr to VSI to which channels are associated with
5918  *
5919  * Helper function which returns max value among the queue counts set on the
5920  * channels/TCs created.
5921  **/
5922 static int i40e_get_max_queues_for_channel(struct i40e_vsi *vsi)
5923 {
5924         struct i40e_channel *ch, *ch_tmp;
5925         int max = 0;
5926
5927         list_for_each_entry_safe(ch, ch_tmp, &vsi->ch_list, list) {
5928                 if (!ch->initialized)
5929                         continue;
5930                 if (ch->num_queue_pairs > max)
5931                         max = ch->num_queue_pairs;
5932         }
5933
5934         return max;
5935 }
5936
5937 /**
5938  * i40e_validate_num_queues - validate num_queues w.r.t channel
5939  * @pf: ptr to PF device
5940  * @num_queues: number of queues
5941  * @vsi: the parent VSI
5942  * @reconfig_rss: indicates should the RSS be reconfigured or not
5943  *
5944  * This function validates number of queues in the context of new channel
5945  * which is being established and determines if RSS should be reconfigured
5946  * or not for parent VSI.
5947  **/
5948 static int i40e_validate_num_queues(struct i40e_pf *pf, int num_queues,
5949                                     struct i40e_vsi *vsi, bool *reconfig_rss)
5950 {
5951         int max_ch_queues;
5952
5953         if (!reconfig_rss)
5954                 return -EINVAL;
5955
5956         *reconfig_rss = false;
5957         if (vsi->current_rss_size) {
5958                 if (num_queues > vsi->current_rss_size) {
5959                         dev_dbg(&pf->pdev->dev,
5960                                 "Error: num_queues (%d) > vsi's current_size(%d)\n",
5961                                 num_queues, vsi->current_rss_size);
5962                         return -EINVAL;
5963                 } else if ((num_queues < vsi->current_rss_size) &&
5964                            (!is_power_of_2(num_queues))) {
5965                         dev_dbg(&pf->pdev->dev,
5966                                 "Error: num_queues (%d) < vsi's current_size(%d), but not power of 2\n",
5967                                 num_queues, vsi->current_rss_size);
5968                         return -EINVAL;
5969                 }
5970         }
5971
5972         if (!is_power_of_2(num_queues)) {
5973                 /* Find the max num_queues configured for channel if channel
5974                  * exist.
5975                  * if channel exist, then enforce 'num_queues' to be more than
5976                  * max ever queues configured for channel.
5977                  */
5978                 max_ch_queues = i40e_get_max_queues_for_channel(vsi);
5979                 if (num_queues < max_ch_queues) {
5980                         dev_dbg(&pf->pdev->dev,
5981                                 "Error: num_queues (%d) < max queues configured for channel(%d)\n",
5982                                 num_queues, max_ch_queues);
5983                         return -EINVAL;
5984                 }
5985                 *reconfig_rss = true;
5986         }
5987
5988         return 0;
5989 }
5990
5991 /**
5992  * i40e_vsi_reconfig_rss - reconfig RSS based on specified rss_size
5993  * @vsi: the VSI being setup
5994  * @rss_size: size of RSS, accordingly LUT gets reprogrammed
5995  *
5996  * This function reconfigures RSS by reprogramming LUTs using 'rss_size'
5997  **/
5998 static int i40e_vsi_reconfig_rss(struct i40e_vsi *vsi, u16 rss_size)
5999 {
6000         struct i40e_pf *pf = vsi->back;
6001         u8 seed[I40E_HKEY_ARRAY_SIZE];
6002         struct i40e_hw *hw = &pf->hw;
6003         int local_rss_size;
6004         u8 *lut;
6005         int ret;
6006
6007         if (!vsi->rss_size)
6008                 return -EINVAL;
6009
6010         if (rss_size > vsi->rss_size)
6011                 return -EINVAL;
6012
6013         local_rss_size = min_t(int, vsi->rss_size, rss_size);
6014         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
6015         if (!lut)
6016                 return -ENOMEM;
6017
6018         /* Ignoring user configured lut if there is one */
6019         i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, local_rss_size);
6020
6021         /* Use user configured hash key if there is one, otherwise
6022          * use default.
6023          */
6024         if (vsi->rss_hkey_user)
6025                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
6026         else
6027                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
6028
6029         ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
6030         if (ret) {
6031                 dev_info(&pf->pdev->dev,
6032                          "Cannot set RSS lut, err %s aq_err %s\n",
6033                          i40e_stat_str(hw, ret),
6034                          i40e_aq_str(hw, hw->aq.asq_last_status));
6035                 kfree(lut);
6036                 return ret;
6037         }
6038         kfree(lut);
6039
6040         /* Do the update w.r.t. storing rss_size */
6041         if (!vsi->orig_rss_size)
6042                 vsi->orig_rss_size = vsi->rss_size;
6043         vsi->current_rss_size = local_rss_size;
6044
6045         return ret;
6046 }
6047
6048 /**
6049  * i40e_channel_setup_queue_map - Setup a channel queue map
6050  * @pf: ptr to PF device
6051  * @ctxt: VSI context structure
6052  * @ch: ptr to channel structure
6053  *
6054  * Setup queue map for a specific channel
6055  **/
6056 static void i40e_channel_setup_queue_map(struct i40e_pf *pf,
6057                                          struct i40e_vsi_context *ctxt,
6058                                          struct i40e_channel *ch)
6059 {
6060         u16 qcount, qmap, sections = 0;
6061         u8 offset = 0;
6062         int pow;
6063
6064         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
6065         sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
6066
6067         qcount = min_t(int, ch->num_queue_pairs, pf->num_lan_msix);
6068         ch->num_queue_pairs = qcount;
6069
6070         /* find the next higher power-of-2 of num queue pairs */
6071         pow = ilog2(qcount);
6072         if (!is_power_of_2(qcount))
6073                 pow++;
6074
6075         qmap = (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
6076                 (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
6077
6078         /* Setup queue TC[0].qmap for given VSI context */
6079         ctxt->info.tc_mapping[0] = cpu_to_le16(qmap);
6080
6081         ctxt->info.up_enable_bits = 0x1; /* TC0 enabled */
6082         ctxt->info.mapping_flags |= cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
6083         ctxt->info.queue_mapping[0] = cpu_to_le16(ch->base_queue);
6084         ctxt->info.valid_sections |= cpu_to_le16(sections);
6085 }
6086
6087 /**
6088  * i40e_add_channel - add a channel by adding VSI
6089  * @pf: ptr to PF device
6090  * @uplink_seid: underlying HW switching element (VEB) ID
6091  * @ch: ptr to channel structure
6092  *
6093  * Add a channel (VSI) using add_vsi and queue_map
6094  **/
6095 static int i40e_add_channel(struct i40e_pf *pf, u16 uplink_seid,
6096                             struct i40e_channel *ch)
6097 {
6098         struct i40e_hw *hw = &pf->hw;
6099         struct i40e_vsi_context ctxt;
6100         u8 enabled_tc = 0x1; /* TC0 enabled */
6101         int ret;
6102
6103         if (ch->type != I40E_VSI_VMDQ2) {
6104                 dev_info(&pf->pdev->dev,
6105                          "add new vsi failed, ch->type %d\n", ch->type);
6106                 return -EINVAL;
6107         }
6108
6109         memset(&ctxt, 0, sizeof(ctxt));
6110         ctxt.pf_num = hw->pf_id;
6111         ctxt.vf_num = 0;
6112         ctxt.uplink_seid = uplink_seid;
6113         ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
6114         if (ch->type == I40E_VSI_VMDQ2)
6115                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
6116
6117         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED) {
6118                 ctxt.info.valid_sections |=
6119                      cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6120                 ctxt.info.switch_id =
6121                    cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6122         }
6123
6124         /* Set queue map for a given VSI context */
6125         i40e_channel_setup_queue_map(pf, &ctxt, ch);
6126
6127         /* Now time to create VSI */
6128         ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
6129         if (ret) {
6130                 dev_info(&pf->pdev->dev,
6131                          "add new vsi failed, err %s aq_err %s\n",
6132                          i40e_stat_str(&pf->hw, ret),
6133                          i40e_aq_str(&pf->hw,
6134                                      pf->hw.aq.asq_last_status));
6135                 return -ENOENT;
6136         }
6137
6138         /* Success, update channel, set enabled_tc only if the channel
6139          * is not a macvlan
6140          */
6141         ch->enabled_tc = !i40e_is_channel_macvlan(ch) && enabled_tc;
6142         ch->seid = ctxt.seid;
6143         ch->vsi_number = ctxt.vsi_number;
6144         ch->stat_counter_idx = le16_to_cpu(ctxt.info.stat_counter_idx);
6145
6146         /* copy just the sections touched not the entire info
6147          * since not all sections are valid as returned by
6148          * update vsi params
6149          */
6150         ch->info.mapping_flags = ctxt.info.mapping_flags;
6151         memcpy(&ch->info.queue_mapping,
6152                &ctxt.info.queue_mapping, sizeof(ctxt.info.queue_mapping));
6153         memcpy(&ch->info.tc_mapping, ctxt.info.tc_mapping,
6154                sizeof(ctxt.info.tc_mapping));
6155
6156         return 0;
6157 }
6158
6159 static int i40e_channel_config_bw(struct i40e_vsi *vsi, struct i40e_channel *ch,
6160                                   u8 *bw_share)
6161 {
6162         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
6163         i40e_status ret;
6164         int i;
6165
6166         memset(&bw_data, 0, sizeof(bw_data));
6167         bw_data.tc_valid_bits = ch->enabled_tc;
6168         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
6169                 bw_data.tc_bw_credits[i] = bw_share[i];
6170
6171         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, ch->seid,
6172                                        &bw_data, NULL);
6173         if (ret) {
6174                 dev_info(&vsi->back->pdev->dev,
6175                          "Config VSI BW allocation per TC failed, aq_err: %d for new_vsi->seid %u\n",
6176                          vsi->back->hw.aq.asq_last_status, ch->seid);
6177                 return -EINVAL;
6178         }
6179
6180         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
6181                 ch->info.qs_handle[i] = bw_data.qs_handles[i];
6182
6183         return 0;
6184 }
6185
6186 /**
6187  * i40e_channel_config_tx_ring - config TX ring associated with new channel
6188  * @pf: ptr to PF device
6189  * @vsi: the VSI being setup
6190  * @ch: ptr to channel structure
6191  *
6192  * Configure TX rings associated with channel (VSI) since queues are being
6193  * from parent VSI.
6194  **/
6195 static int i40e_channel_config_tx_ring(struct i40e_pf *pf,
6196                                        struct i40e_vsi *vsi,
6197                                        struct i40e_channel *ch)
6198 {
6199         i40e_status ret;
6200         int i;
6201         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
6202
6203         /* Enable ETS TCs with equal BW Share for now across all VSIs */
6204         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
6205                 if (ch->enabled_tc & BIT(i))
6206                         bw_share[i] = 1;
6207         }
6208
6209         /* configure BW for new VSI */
6210         ret = i40e_channel_config_bw(vsi, ch, bw_share);
6211         if (ret) {
6212                 dev_info(&vsi->back->pdev->dev,
6213                          "Failed configuring TC map %d for channel (seid %u)\n",
6214                          ch->enabled_tc, ch->seid);
6215                 return ret;
6216         }
6217
6218         for (i = 0; i < ch->num_queue_pairs; i++) {
6219                 struct i40e_ring *tx_ring, *rx_ring;
6220                 u16 pf_q;
6221
6222                 pf_q = ch->base_queue + i;
6223
6224                 /* Get to TX ring ptr of main VSI, for re-setup TX queue
6225                  * context
6226                  */
6227                 tx_ring = vsi->tx_rings[pf_q];
6228                 tx_ring->ch = ch;
6229
6230                 /* Get the RX ring ptr */
6231                 rx_ring = vsi->rx_rings[pf_q];
6232                 rx_ring->ch = ch;
6233         }
6234
6235         return 0;
6236 }
6237
6238 /**
6239  * i40e_setup_hw_channel - setup new channel
6240  * @pf: ptr to PF device
6241  * @vsi: the VSI being setup
6242  * @ch: ptr to channel structure
6243  * @uplink_seid: underlying HW switching element (VEB) ID
6244  * @type: type of channel to be created (VMDq2/VF)
6245  *
6246  * Setup new channel (VSI) based on specified type (VMDq2/VF)
6247  * and configures TX rings accordingly
6248  **/
6249 static inline int i40e_setup_hw_channel(struct i40e_pf *pf,
6250                                         struct i40e_vsi *vsi,
6251                                         struct i40e_channel *ch,
6252                                         u16 uplink_seid, u8 type)
6253 {
6254         int ret;
6255
6256         ch->initialized = false;
6257         ch->base_queue = vsi->next_base_queue;
6258         ch->type = type;
6259
6260         /* Proceed with creation of channel (VMDq2) VSI */
6261         ret = i40e_add_channel(pf, uplink_seid, ch);
6262         if (ret) {
6263                 dev_info(&pf->pdev->dev,
6264                          "failed to add_channel using uplink_seid %u\n",
6265                          uplink_seid);
6266                 return ret;
6267         }
6268
6269         /* Mark the successful creation of channel */
6270         ch->initialized = true;
6271
6272         /* Reconfigure TX queues using QTX_CTL register */
6273         ret = i40e_channel_config_tx_ring(pf, vsi, ch);
6274         if (ret) {
6275                 dev_info(&pf->pdev->dev,
6276                          "failed to configure TX rings for channel %u\n",
6277                          ch->seid);
6278                 return ret;
6279         }
6280
6281         /* update 'next_base_queue' */
6282         vsi->next_base_queue = vsi->next_base_queue + ch->num_queue_pairs;
6283         dev_dbg(&pf->pdev->dev,
6284                 "Added channel: vsi_seid %u, vsi_number %u, stat_counter_idx %u, num_queue_pairs %u, pf->next_base_queue %d\n",
6285                 ch->seid, ch->vsi_number, ch->stat_counter_idx,
6286                 ch->num_queue_pairs,
6287                 vsi->next_base_queue);
6288         return ret;
6289 }
6290
6291 /**
6292  * i40e_setup_channel - setup new channel using uplink element
6293  * @pf: ptr to PF device
6294  * @vsi: pointer to the VSI to set up the channel within
6295  * @ch: ptr to channel structure
6296  *
6297  * Setup new channel (VSI) based on specified type (VMDq2/VF)
6298  * and uplink switching element (uplink_seid)
6299  **/
6300 static bool i40e_setup_channel(struct i40e_pf *pf, struct i40e_vsi *vsi,
6301                                struct i40e_channel *ch)
6302 {
6303         u8 vsi_type;
6304         u16 seid;
6305         int ret;
6306
6307         if (vsi->type == I40E_VSI_MAIN) {
6308                 vsi_type = I40E_VSI_VMDQ2;
6309         } else {
6310                 dev_err(&pf->pdev->dev, "unsupported parent vsi type(%d)\n",
6311                         vsi->type);
6312                 return false;
6313         }
6314
6315         /* underlying switching element */
6316         seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6317
6318         /* create channel (VSI), configure TX rings */
6319         ret = i40e_setup_hw_channel(pf, vsi, ch, seid, vsi_type);
6320         if (ret) {
6321                 dev_err(&pf->pdev->dev, "failed to setup hw_channel\n");
6322                 return false;
6323         }
6324
6325         return ch->initialized ? true : false;
6326 }
6327
6328 /**
6329  * i40e_validate_and_set_switch_mode - sets up switch mode correctly
6330  * @vsi: ptr to VSI which has PF backing
6331  *
6332  * Sets up switch mode correctly if it needs to be changed and perform
6333  * what are allowed modes.
6334  **/
6335 static int i40e_validate_and_set_switch_mode(struct i40e_vsi *vsi)
6336 {
6337         u8 mode;
6338         struct i40e_pf *pf = vsi->back;
6339         struct i40e_hw *hw = &pf->hw;
6340         int ret;
6341
6342         ret = i40e_get_capabilities(pf, i40e_aqc_opc_list_dev_capabilities);
6343         if (ret)
6344                 return -EINVAL;
6345
6346         if (hw->dev_caps.switch_mode) {
6347                 /* if switch mode is set, support mode2 (non-tunneled for
6348                  * cloud filter) for now
6349                  */
6350                 u32 switch_mode = hw->dev_caps.switch_mode &
6351                                   I40E_SWITCH_MODE_MASK;
6352                 if (switch_mode >= I40E_CLOUD_FILTER_MODE1) {
6353                         if (switch_mode == I40E_CLOUD_FILTER_MODE2)
6354                                 return 0;
6355                         dev_err(&pf->pdev->dev,
6356                                 "Invalid switch_mode (%d), only non-tunneled mode for cloud filter is supported\n",
6357                                 hw->dev_caps.switch_mode);
6358                         return -EINVAL;
6359                 }
6360         }
6361
6362         /* Set Bit 7 to be valid */
6363         mode = I40E_AQ_SET_SWITCH_BIT7_VALID;
6364
6365         /* Set L4type for TCP support */
6366         mode |= I40E_AQ_SET_SWITCH_L4_TYPE_TCP;
6367
6368         /* Set cloud filter mode */
6369         mode |= I40E_AQ_SET_SWITCH_MODE_NON_TUNNEL;
6370
6371         /* Prep mode field for set_switch_config */
6372         ret = i40e_aq_set_switch_config(hw, pf->last_sw_conf_flags,
6373                                         pf->last_sw_conf_valid_flags,
6374                                         mode, NULL);
6375         if (ret && hw->aq.asq_last_status != I40E_AQ_RC_ESRCH)
6376                 dev_err(&pf->pdev->dev,
6377                         "couldn't set switch config bits, err %s aq_err %s\n",
6378                         i40e_stat_str(hw, ret),
6379                         i40e_aq_str(hw,
6380                                     hw->aq.asq_last_status));
6381
6382         return ret;
6383 }
6384
6385 /**
6386  * i40e_create_queue_channel - function to create channel
6387  * @vsi: VSI to be configured
6388  * @ch: ptr to channel (it contains channel specific params)
6389  *
6390  * This function creates channel (VSI) using num_queues specified by user,
6391  * reconfigs RSS if needed.
6392  **/
6393 int i40e_create_queue_channel(struct i40e_vsi *vsi,
6394                               struct i40e_channel *ch)
6395 {
6396         struct i40e_pf *pf = vsi->back;
6397         bool reconfig_rss;
6398         int err;
6399
6400         if (!ch)
6401                 return -EINVAL;
6402
6403         if (!ch->num_queue_pairs) {
6404                 dev_err(&pf->pdev->dev, "Invalid num_queues requested: %d\n",
6405                         ch->num_queue_pairs);
6406                 return -EINVAL;
6407         }
6408
6409         /* validate user requested num_queues for channel */
6410         err = i40e_validate_num_queues(pf, ch->num_queue_pairs, vsi,
6411                                        &reconfig_rss);
6412         if (err) {
6413                 dev_info(&pf->pdev->dev, "Failed to validate num_queues (%d)\n",
6414                          ch->num_queue_pairs);
6415                 return -EINVAL;
6416         }
6417
6418         /* By default we are in VEPA mode, if this is the first VF/VMDq
6419          * VSI to be added switch to VEB mode.
6420          */
6421
6422         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
6423                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
6424
6425                 if (vsi->type == I40E_VSI_MAIN) {
6426                         if (pf->flags & I40E_FLAG_TC_MQPRIO)
6427                                 i40e_do_reset(pf, I40E_PF_RESET_FLAG, true);
6428                         else
6429                                 i40e_do_reset_safe(pf, I40E_PF_RESET_FLAG);
6430                 }
6431                 /* now onwards for main VSI, number of queues will be value
6432                  * of TC0's queue count
6433                  */
6434         }
6435
6436         /* By this time, vsi->cnt_q_avail shall be set to non-zero and
6437          * it should be more than num_queues
6438          */
6439         if (!vsi->cnt_q_avail || vsi->cnt_q_avail < ch->num_queue_pairs) {
6440                 dev_dbg(&pf->pdev->dev,
6441                         "Error: cnt_q_avail (%u) less than num_queues %d\n",
6442                         vsi->cnt_q_avail, ch->num_queue_pairs);
6443                 return -EINVAL;
6444         }
6445
6446         /* reconfig_rss only if vsi type is MAIN_VSI */
6447         if (reconfig_rss && (vsi->type == I40E_VSI_MAIN)) {
6448                 err = i40e_vsi_reconfig_rss(vsi, ch->num_queue_pairs);
6449                 if (err) {
6450                         dev_info(&pf->pdev->dev,
6451                                  "Error: unable to reconfig rss for num_queues (%u)\n",
6452                                  ch->num_queue_pairs);
6453                         return -EINVAL;
6454                 }
6455         }
6456
6457         if (!i40e_setup_channel(pf, vsi, ch)) {
6458                 dev_info(&pf->pdev->dev, "Failed to setup channel\n");
6459                 return -EINVAL;
6460         }
6461
6462         dev_info(&pf->pdev->dev,
6463                  "Setup channel (id:%u) utilizing num_queues %d\n",
6464                  ch->seid, ch->num_queue_pairs);
6465
6466         /* configure VSI for BW limit */
6467         if (ch->max_tx_rate) {
6468                 u64 credits = ch->max_tx_rate;
6469
6470                 if (i40e_set_bw_limit(vsi, ch->seid, ch->max_tx_rate))
6471                         return -EINVAL;
6472
6473                 do_div(credits, I40E_BW_CREDIT_DIVISOR);
6474                 dev_dbg(&pf->pdev->dev,
6475                         "Set tx rate of %llu Mbps (count of 50Mbps %llu) for vsi->seid %u\n",
6476                         ch->max_tx_rate,
6477                         credits,
6478                         ch->seid);
6479         }
6480
6481         /* in case of VF, this will be main SRIOV VSI */
6482         ch->parent_vsi = vsi;
6483
6484         /* and update main_vsi's count for queue_available to use */
6485         vsi->cnt_q_avail -= ch->num_queue_pairs;
6486
6487         return 0;
6488 }
6489
6490 /**
6491  * i40e_configure_queue_channels - Add queue channel for the given TCs
6492  * @vsi: VSI to be configured
6493  *
6494  * Configures queue channel mapping to the given TCs
6495  **/
6496 static int i40e_configure_queue_channels(struct i40e_vsi *vsi)
6497 {
6498         struct i40e_channel *ch;
6499         u64 max_rate = 0;
6500         int ret = 0, i;
6501
6502         /* Create app vsi with the TCs. Main VSI with TC0 is already set up */
6503         vsi->tc_seid_map[0] = vsi->seid;
6504         for (i = 1; i < I40E_MAX_TRAFFIC_CLASS; i++) {
6505                 if (vsi->tc_config.enabled_tc & BIT(i)) {
6506                         ch = kzalloc(sizeof(*ch), GFP_KERNEL);
6507                         if (!ch) {
6508                                 ret = -ENOMEM;
6509                                 goto err_free;
6510                         }
6511
6512                         INIT_LIST_HEAD(&ch->list);
6513                         ch->num_queue_pairs =
6514                                 vsi->tc_config.tc_info[i].qcount;
6515                         ch->base_queue =
6516                                 vsi->tc_config.tc_info[i].qoffset;
6517
6518                         /* Bandwidth limit through tc interface is in bytes/s,
6519                          * change to Mbit/s
6520                          */
6521                         max_rate = vsi->mqprio_qopt.max_rate[i];
6522                         do_div(max_rate, I40E_BW_MBPS_DIVISOR);
6523                         ch->max_tx_rate = max_rate;
6524
6525                         list_add_tail(&ch->list, &vsi->ch_list);
6526
6527                         ret = i40e_create_queue_channel(vsi, ch);
6528                         if (ret) {
6529                                 dev_err(&vsi->back->pdev->dev,
6530                                         "Failed creating queue channel with TC%d: queues %d\n",
6531                                         i, ch->num_queue_pairs);
6532                                 goto err_free;
6533                         }
6534                         vsi->tc_seid_map[i] = ch->seid;
6535                 }
6536         }
6537         return ret;
6538
6539 err_free:
6540         i40e_remove_queue_channels(vsi);
6541         return ret;
6542 }
6543
6544 /**
6545  * i40e_veb_config_tc - Configure TCs for given VEB
6546  * @veb: given VEB
6547  * @enabled_tc: TC bitmap
6548  *
6549  * Configures given TC bitmap for VEB (switching) element
6550  **/
6551 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
6552 {
6553         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
6554         struct i40e_pf *pf = veb->pf;
6555         int ret = 0;
6556         int i;
6557
6558         /* No TCs or already enabled TCs just return */
6559         if (!enabled_tc || veb->enabled_tc == enabled_tc)
6560                 return ret;
6561
6562         bw_data.tc_valid_bits = enabled_tc;
6563         /* bw_data.absolute_credits is not set (relative) */
6564
6565         /* Enable ETS TCs with equal BW Share for now */
6566         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
6567                 if (enabled_tc & BIT(i))
6568                         bw_data.tc_bw_share_credits[i] = 1;
6569         }
6570
6571         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
6572                                                    &bw_data, NULL);
6573         if (ret) {
6574                 dev_info(&pf->pdev->dev,
6575                          "VEB bw config failed, err %s aq_err %s\n",
6576                          i40e_stat_str(&pf->hw, ret),
6577                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6578                 goto out;
6579         }
6580
6581         /* Update the BW information */
6582         ret = i40e_veb_get_bw_info(veb);
6583         if (ret) {
6584                 dev_info(&pf->pdev->dev,
6585                          "Failed getting veb bw config, err %s aq_err %s\n",
6586                          i40e_stat_str(&pf->hw, ret),
6587                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6588         }
6589
6590 out:
6591         return ret;
6592 }
6593
6594 #ifdef CONFIG_I40E_DCB
6595 /**
6596  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
6597  * @pf: PF struct
6598  *
6599  * Reconfigure VEB/VSIs on a given PF; it is assumed that
6600  * the caller would've quiesce all the VSIs before calling
6601  * this function
6602  **/
6603 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
6604 {
6605         u8 tc_map = 0;
6606         int ret;
6607         u8 v;
6608
6609         /* Enable the TCs available on PF to all VEBs */
6610         tc_map = i40e_pf_get_tc_map(pf);
6611         if (tc_map == I40E_DEFAULT_TRAFFIC_CLASS)
6612                 return;
6613
6614         for (v = 0; v < I40E_MAX_VEB; v++) {
6615                 if (!pf->veb[v])
6616                         continue;
6617                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
6618                 if (ret) {
6619                         dev_info(&pf->pdev->dev,
6620                                  "Failed configuring TC for VEB seid=%d\n",
6621                                  pf->veb[v]->seid);
6622                         /* Will try to configure as many components */
6623                 }
6624         }
6625
6626         /* Update each VSI */
6627         for (v = 0; v < pf->num_alloc_vsi; v++) {
6628                 if (!pf->vsi[v])
6629                         continue;
6630
6631                 /* - Enable all TCs for the LAN VSI
6632                  * - For all others keep them at TC0 for now
6633                  */
6634                 if (v == pf->lan_vsi)
6635                         tc_map = i40e_pf_get_tc_map(pf);
6636                 else
6637                         tc_map = I40E_DEFAULT_TRAFFIC_CLASS;
6638
6639                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
6640                 if (ret) {
6641                         dev_info(&pf->pdev->dev,
6642                                  "Failed configuring TC for VSI seid=%d\n",
6643                                  pf->vsi[v]->seid);
6644                         /* Will try to configure as many components */
6645                 } else {
6646                         /* Re-configure VSI vectors based on updated TC map */
6647                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
6648                         if (pf->vsi[v]->netdev)
6649                                 i40e_dcbnl_set_all(pf->vsi[v]);
6650                 }
6651         }
6652 }
6653
6654 /**
6655  * i40e_resume_port_tx - Resume port Tx
6656  * @pf: PF struct
6657  *
6658  * Resume a port's Tx and issue a PF reset in case of failure to
6659  * resume.
6660  **/
6661 static int i40e_resume_port_tx(struct i40e_pf *pf)
6662 {
6663         struct i40e_hw *hw = &pf->hw;
6664         int ret;
6665
6666         ret = i40e_aq_resume_port_tx(hw, NULL);
6667         if (ret) {
6668                 dev_info(&pf->pdev->dev,
6669                          "Resume Port Tx failed, err %s aq_err %s\n",
6670                           i40e_stat_str(&pf->hw, ret),
6671                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6672                 /* Schedule PF reset to recover */
6673                 set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
6674                 i40e_service_event_schedule(pf);
6675         }
6676
6677         return ret;
6678 }
6679
6680 /**
6681  * i40e_suspend_port_tx - Suspend port Tx
6682  * @pf: PF struct
6683  *
6684  * Suspend a port's Tx and issue a PF reset in case of failure.
6685  **/
6686 static int i40e_suspend_port_tx(struct i40e_pf *pf)
6687 {
6688         struct i40e_hw *hw = &pf->hw;
6689         int ret;
6690
6691         ret = i40e_aq_suspend_port_tx(hw, pf->mac_seid, NULL);
6692         if (ret) {
6693                 dev_info(&pf->pdev->dev,
6694                          "Suspend Port Tx failed, err %s aq_err %s\n",
6695                          i40e_stat_str(&pf->hw, ret),
6696                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6697                 /* Schedule PF reset to recover */
6698                 set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
6699                 i40e_service_event_schedule(pf);
6700         }
6701
6702         return ret;
6703 }
6704
6705 /**
6706  * i40e_hw_set_dcb_config - Program new DCBX settings into HW
6707  * @pf: PF being configured
6708  * @new_cfg: New DCBX configuration
6709  *
6710  * Program DCB settings into HW and reconfigure VEB/VSIs on
6711  * given PF. Uses "Set LLDP MIB" AQC to program the hardware.
6712  **/
6713 static int i40e_hw_set_dcb_config(struct i40e_pf *pf,
6714                                   struct i40e_dcbx_config *new_cfg)
6715 {
6716         struct i40e_dcbx_config *old_cfg = &pf->hw.local_dcbx_config;
6717         int ret;
6718
6719         /* Check if need reconfiguration */
6720         if (!memcmp(&new_cfg, &old_cfg, sizeof(new_cfg))) {
6721                 dev_dbg(&pf->pdev->dev, "No Change in DCB Config required.\n");
6722                 return 0;
6723         }
6724
6725         /* Config change disable all VSIs */
6726         i40e_pf_quiesce_all_vsi(pf);
6727
6728         /* Copy the new config to the current config */
6729         *old_cfg = *new_cfg;
6730         old_cfg->etsrec = old_cfg->etscfg;
6731         ret = i40e_set_dcb_config(&pf->hw);
6732         if (ret) {
6733                 dev_info(&pf->pdev->dev,
6734                          "Set DCB Config failed, err %s aq_err %s\n",
6735                          i40e_stat_str(&pf->hw, ret),
6736                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6737                 goto out;
6738         }
6739
6740         /* Changes in configuration update VEB/VSI */
6741         i40e_dcb_reconfigure(pf);
6742 out:
6743         /* In case of reset do not try to resume anything */
6744         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state)) {
6745                 /* Re-start the VSIs if disabled */
6746                 ret = i40e_resume_port_tx(pf);
6747                 /* In case of error no point in resuming VSIs */
6748                 if (ret)
6749                         goto err;
6750                 i40e_pf_unquiesce_all_vsi(pf);
6751         }
6752 err:
6753         return ret;
6754 }
6755
6756 /**
6757  * i40e_hw_dcb_config - Program new DCBX settings into HW
6758  * @pf: PF being configured
6759  * @new_cfg: New DCBX configuration
6760  *
6761  * Program DCB settings into HW and reconfigure VEB/VSIs on
6762  * given PF
6763  **/
6764 int i40e_hw_dcb_config(struct i40e_pf *pf, struct i40e_dcbx_config *new_cfg)
6765 {
6766         struct i40e_aqc_configure_switching_comp_ets_data ets_data;
6767         u8 prio_type[I40E_MAX_TRAFFIC_CLASS] = {0};
6768         u32 mfs_tc[I40E_MAX_TRAFFIC_CLASS];
6769         struct i40e_dcbx_config *old_cfg;
6770         u8 mode[I40E_MAX_TRAFFIC_CLASS];
6771         struct i40e_rx_pb_config pb_cfg;
6772         struct i40e_hw *hw = &pf->hw;
6773         u8 num_ports = hw->num_ports;
6774         bool need_reconfig;
6775         int ret = -EINVAL;
6776         u8 lltc_map = 0;
6777         u8 tc_map = 0;
6778         u8 new_numtc;
6779         u8 i;
6780
6781         dev_dbg(&pf->pdev->dev, "Configuring DCB registers directly\n");
6782         /* Un-pack information to Program ETS HW via shared API
6783          * numtc, tcmap
6784          * LLTC map
6785          * ETS/NON-ETS arbiter mode
6786          * max exponent (credit refills)
6787          * Total number of ports
6788          * PFC priority bit-map
6789          * Priority Table
6790          * BW % per TC
6791          * Arbiter mode between UPs sharing same TC
6792          * TSA table (ETS or non-ETS)
6793          * EEE enabled or not
6794          * MFS TC table
6795          */
6796
6797         new_numtc = i40e_dcb_get_num_tc(new_cfg);
6798
6799         memset(&ets_data, 0, sizeof(ets_data));
6800         for (i = 0; i < new_numtc; i++) {
6801                 tc_map |= BIT(i);
6802                 switch (new_cfg->etscfg.tsatable[i]) {
6803                 case I40E_IEEE_TSA_ETS:
6804                         prio_type[i] = I40E_DCB_PRIO_TYPE_ETS;
6805                         ets_data.tc_bw_share_credits[i] =
6806                                         new_cfg->etscfg.tcbwtable[i];
6807                         break;
6808                 case I40E_IEEE_TSA_STRICT:
6809                         prio_type[i] = I40E_DCB_PRIO_TYPE_STRICT;
6810                         lltc_map |= BIT(i);
6811                         ets_data.tc_bw_share_credits[i] =
6812                                         I40E_DCB_STRICT_PRIO_CREDITS;
6813                         break;
6814                 default:
6815                         /* Invalid TSA type */
6816                         need_reconfig = false;
6817                         goto out;
6818                 }
6819         }
6820
6821         old_cfg = &hw->local_dcbx_config;
6822         /* Check if need reconfiguration */
6823         need_reconfig = i40e_dcb_need_reconfig(pf, old_cfg, new_cfg);
6824
6825         /* If needed, enable/disable frame tagging, disable all VSIs
6826          * and suspend port tx
6827          */
6828         if (need_reconfig) {
6829                 /* Enable DCB tagging only when more than one TC */
6830                 if (new_numtc > 1)
6831                         pf->flags |= I40E_FLAG_DCB_ENABLED;
6832                 else
6833                         pf->flags &= ~I40E_FLAG_DCB_ENABLED;
6834
6835                 set_bit(__I40E_PORT_SUSPENDED, pf->state);
6836                 /* Reconfiguration needed quiesce all VSIs */
6837                 i40e_pf_quiesce_all_vsi(pf);
6838                 ret = i40e_suspend_port_tx(pf);
6839                 if (ret)
6840                         goto err;
6841         }
6842
6843         /* Configure Port ETS Tx Scheduler */
6844         ets_data.tc_valid_bits = tc_map;
6845         ets_data.tc_strict_priority_flags = lltc_map;
6846         ret = i40e_aq_config_switch_comp_ets
6847                 (hw, pf->mac_seid, &ets_data,
6848                  i40e_aqc_opc_modify_switching_comp_ets, NULL);
6849         if (ret) {
6850                 dev_info(&pf->pdev->dev,
6851                          "Modify Port ETS failed, err %s aq_err %s\n",
6852                          i40e_stat_str(&pf->hw, ret),
6853                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6854                 goto out;
6855         }
6856
6857         /* Configure Rx ETS HW */
6858         memset(&mode, I40E_DCB_ARB_MODE_ROUND_ROBIN, sizeof(mode));
6859         i40e_dcb_hw_set_num_tc(hw, new_numtc);
6860         i40e_dcb_hw_rx_fifo_config(hw, I40E_DCB_ARB_MODE_ROUND_ROBIN,
6861                                    I40E_DCB_ARB_MODE_STRICT_PRIORITY,
6862                                    I40E_DCB_DEFAULT_MAX_EXPONENT,
6863                                    lltc_map);
6864         i40e_dcb_hw_rx_cmd_monitor_config(hw, new_numtc, num_ports);
6865         i40e_dcb_hw_rx_ets_bw_config(hw, new_cfg->etscfg.tcbwtable, mode,
6866                                      prio_type);
6867         i40e_dcb_hw_pfc_config(hw, new_cfg->pfc.pfcenable,
6868                                new_cfg->etscfg.prioritytable);
6869         i40e_dcb_hw_rx_up2tc_config(hw, new_cfg->etscfg.prioritytable);
6870
6871         /* Configure Rx Packet Buffers in HW */
6872         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
6873                 mfs_tc[i] = pf->vsi[pf->lan_vsi]->netdev->mtu;
6874                 mfs_tc[i] += I40E_PACKET_HDR_PAD;
6875         }
6876
6877         i40e_dcb_hw_calculate_pool_sizes(hw, num_ports,
6878                                          false, new_cfg->pfc.pfcenable,
6879                                          mfs_tc, &pb_cfg);
6880         i40e_dcb_hw_rx_pb_config(hw, &pf->pb_cfg, &pb_cfg);
6881
6882         /* Update the local Rx Packet buffer config */
6883         pf->pb_cfg = pb_cfg;
6884
6885         /* Inform the FW about changes to DCB configuration */
6886         ret = i40e_aq_dcb_updated(&pf->hw, NULL);
6887         if (ret) {
6888                 dev_info(&pf->pdev->dev,
6889                          "DCB Updated failed, err %s aq_err %s\n",
6890                          i40e_stat_str(&pf->hw, ret),
6891                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6892                 goto out;
6893         }
6894
6895         /* Update the port DCBx configuration */
6896         *old_cfg = *new_cfg;
6897
6898         /* Changes in configuration update VEB/VSI */
6899         i40e_dcb_reconfigure(pf);
6900 out:
6901         /* Re-start the VSIs if disabled */
6902         if (need_reconfig) {
6903                 ret = i40e_resume_port_tx(pf);
6904
6905                 clear_bit(__I40E_PORT_SUSPENDED, pf->state);
6906                 /* In case of error no point in resuming VSIs */
6907                 if (ret)
6908                         goto err;
6909
6910                 /* Wait for the PF's queues to be disabled */
6911                 ret = i40e_pf_wait_queues_disabled(pf);
6912                 if (ret) {
6913                         /* Schedule PF reset to recover */
6914                         set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
6915                         i40e_service_event_schedule(pf);
6916                         goto err;
6917                 } else {
6918                         i40e_pf_unquiesce_all_vsi(pf);
6919                         set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
6920                         set_bit(__I40E_CLIENT_L2_CHANGE, pf->state);
6921                 }
6922                 /* registers are set, lets apply */
6923                 if (pf->hw_features & I40E_HW_USE_SET_LLDP_MIB)
6924                         ret = i40e_hw_set_dcb_config(pf, new_cfg);
6925         }
6926
6927 err:
6928         return ret;
6929 }
6930
6931 /**
6932  * i40e_dcb_sw_default_config - Set default DCB configuration when DCB in SW
6933  * @pf: PF being queried
6934  *
6935  * Set default DCB configuration in case DCB is to be done in SW.
6936  **/
6937 int i40e_dcb_sw_default_config(struct i40e_pf *pf)
6938 {
6939         struct i40e_dcbx_config *dcb_cfg = &pf->hw.local_dcbx_config;
6940         struct i40e_aqc_configure_switching_comp_ets_data ets_data;
6941         struct i40e_hw *hw = &pf->hw;
6942         int err;
6943
6944         if (pf->hw_features & I40E_HW_USE_SET_LLDP_MIB) {
6945                 /* Update the local cached instance with TC0 ETS */
6946                 memset(&pf->tmp_cfg, 0, sizeof(struct i40e_dcbx_config));
6947                 pf->tmp_cfg.etscfg.willing = I40E_IEEE_DEFAULT_ETS_WILLING;
6948                 pf->tmp_cfg.etscfg.maxtcs = 0;
6949                 pf->tmp_cfg.etscfg.tcbwtable[0] = I40E_IEEE_DEFAULT_ETS_TCBW;
6950                 pf->tmp_cfg.etscfg.tsatable[0] = I40E_IEEE_TSA_ETS;
6951                 pf->tmp_cfg.pfc.willing = I40E_IEEE_DEFAULT_PFC_WILLING;
6952                 pf->tmp_cfg.pfc.pfccap = I40E_MAX_TRAFFIC_CLASS;
6953                 /* FW needs one App to configure HW */
6954                 pf->tmp_cfg.numapps = I40E_IEEE_DEFAULT_NUM_APPS;
6955                 pf->tmp_cfg.app[0].selector = I40E_APP_SEL_ETHTYPE;
6956                 pf->tmp_cfg.app[0].priority = I40E_IEEE_DEFAULT_APP_PRIO;
6957                 pf->tmp_cfg.app[0].protocolid = I40E_APP_PROTOID_FCOE;
6958
6959                 return i40e_hw_set_dcb_config(pf, &pf->tmp_cfg);
6960         }
6961
6962         memset(&ets_data, 0, sizeof(ets_data));
6963         ets_data.tc_valid_bits = I40E_DEFAULT_TRAFFIC_CLASS; /* TC0 only */
6964         ets_data.tc_strict_priority_flags = 0; /* ETS */
6965         ets_data.tc_bw_share_credits[0] = I40E_IEEE_DEFAULT_ETS_TCBW; /* 100% to TC0 */
6966
6967         /* Enable ETS on the Physical port */
6968         err = i40e_aq_config_switch_comp_ets
6969                 (hw, pf->mac_seid, &ets_data,
6970                  i40e_aqc_opc_enable_switching_comp_ets, NULL);
6971         if (err) {
6972                 dev_info(&pf->pdev->dev,
6973                          "Enable Port ETS failed, err %s aq_err %s\n",
6974                          i40e_stat_str(&pf->hw, err),
6975                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6976                 err = -ENOENT;
6977                 goto out;
6978         }
6979
6980         /* Update the local cached instance with TC0 ETS */
6981         dcb_cfg->etscfg.willing = I40E_IEEE_DEFAULT_ETS_WILLING;
6982         dcb_cfg->etscfg.cbs = 0;
6983         dcb_cfg->etscfg.maxtcs = I40E_MAX_TRAFFIC_CLASS;
6984         dcb_cfg->etscfg.tcbwtable[0] = I40E_IEEE_DEFAULT_ETS_TCBW;
6985
6986 out:
6987         return err;
6988 }
6989
6990 /**
6991  * i40e_init_pf_dcb - Initialize DCB configuration
6992  * @pf: PF being configured
6993  *
6994  * Query the current DCB configuration and cache it
6995  * in the hardware structure
6996  **/
6997 static int i40e_init_pf_dcb(struct i40e_pf *pf)
6998 {
6999         struct i40e_hw *hw = &pf->hw;
7000         int err;
7001
7002         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable
7003          * Also do not enable DCBx if FW LLDP agent is disabled
7004          */
7005         if (pf->hw_features & I40E_HW_NO_DCB_SUPPORT) {
7006                 dev_info(&pf->pdev->dev, "DCB is not supported.\n");
7007                 err = I40E_NOT_SUPPORTED;
7008                 goto out;
7009         }
7010         if (pf->flags & I40E_FLAG_DISABLE_FW_LLDP) {
7011                 dev_info(&pf->pdev->dev, "FW LLDP is disabled, attempting SW DCB\n");
7012                 err = i40e_dcb_sw_default_config(pf);
7013                 if (err) {
7014                         dev_info(&pf->pdev->dev, "Could not initialize SW DCB\n");
7015                         goto out;
7016                 }
7017                 dev_info(&pf->pdev->dev, "SW DCB initialization succeeded.\n");
7018                 pf->dcbx_cap = DCB_CAP_DCBX_HOST |
7019                                DCB_CAP_DCBX_VER_IEEE;
7020                 /* at init capable but disabled */
7021                 pf->flags |= I40E_FLAG_DCB_CAPABLE;
7022                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
7023                 goto out;
7024         }
7025         err = i40e_init_dcb(hw, true);
7026         if (!err) {
7027                 /* Device/Function is not DCBX capable */
7028                 if ((!hw->func_caps.dcb) ||
7029                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
7030                         dev_info(&pf->pdev->dev,
7031                                  "DCBX offload is not supported or is disabled for this PF.\n");
7032                 } else {
7033                         /* When status is not DISABLED then DCBX in FW */
7034                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
7035                                        DCB_CAP_DCBX_VER_IEEE;
7036
7037                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
7038                         /* Enable DCB tagging only when more than one TC
7039                          * or explicitly disable if only one TC
7040                          */
7041                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
7042                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
7043                         else
7044                                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
7045                         dev_dbg(&pf->pdev->dev,
7046                                 "DCBX offload is supported for this PF.\n");
7047                 }
7048         } else if (pf->hw.aq.asq_last_status == I40E_AQ_RC_EPERM) {
7049                 dev_info(&pf->pdev->dev, "FW LLDP disabled for this PF.\n");
7050                 pf->flags |= I40E_FLAG_DISABLE_FW_LLDP;
7051         } else {
7052                 dev_info(&pf->pdev->dev,
7053                          "Query for DCB configuration failed, err %s aq_err %s\n",
7054                          i40e_stat_str(&pf->hw, err),
7055                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7056         }
7057
7058 out:
7059         return err;
7060 }
7061 #endif /* CONFIG_I40E_DCB */
7062
7063 /**
7064  * i40e_print_link_message - print link up or down
7065  * @vsi: the VSI for which link needs a message
7066  * @isup: true of link is up, false otherwise
7067  */
7068 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
7069 {
7070         enum i40e_aq_link_speed new_speed;
7071         struct i40e_pf *pf = vsi->back;
7072         char *speed = "Unknown";
7073         char *fc = "Unknown";
7074         char *fec = "";
7075         char *req_fec = "";
7076         char *an = "";
7077
7078         if (isup)
7079                 new_speed = pf->hw.phy.link_info.link_speed;
7080         else
7081                 new_speed = I40E_LINK_SPEED_UNKNOWN;
7082
7083         if ((vsi->current_isup == isup) && (vsi->current_speed == new_speed))
7084                 return;
7085         vsi->current_isup = isup;
7086         vsi->current_speed = new_speed;
7087         if (!isup) {
7088                 netdev_info(vsi->netdev, "NIC Link is Down\n");
7089                 return;
7090         }
7091
7092         /* Warn user if link speed on NPAR enabled partition is not at
7093          * least 10GB
7094          */
7095         if (pf->hw.func_caps.npar_enable &&
7096             (pf->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
7097              pf->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
7098                 netdev_warn(vsi->netdev,
7099                             "The partition detected link speed that is less than 10Gbps\n");
7100
7101         switch (pf->hw.phy.link_info.link_speed) {
7102         case I40E_LINK_SPEED_40GB:
7103                 speed = "40 G";
7104                 break;
7105         case I40E_LINK_SPEED_20GB:
7106                 speed = "20 G";
7107                 break;
7108         case I40E_LINK_SPEED_25GB:
7109                 speed = "25 G";
7110                 break;
7111         case I40E_LINK_SPEED_10GB:
7112                 speed = "10 G";
7113                 break;
7114         case I40E_LINK_SPEED_5GB:
7115                 speed = "5 G";
7116                 break;
7117         case I40E_LINK_SPEED_2_5GB:
7118                 speed = "2.5 G";
7119                 break;
7120         case I40E_LINK_SPEED_1GB:
7121                 speed = "1000 M";
7122                 break;
7123         case I40E_LINK_SPEED_100MB:
7124                 speed = "100 M";
7125                 break;
7126         default:
7127                 break;
7128         }
7129
7130         switch (pf->hw.fc.current_mode) {
7131         case I40E_FC_FULL:
7132                 fc = "RX/TX";
7133                 break;
7134         case I40E_FC_TX_PAUSE:
7135                 fc = "TX";
7136                 break;
7137         case I40E_FC_RX_PAUSE:
7138                 fc = "RX";
7139                 break;
7140         default:
7141                 fc = "None";
7142                 break;
7143         }
7144
7145         if (pf->hw.phy.link_info.link_speed == I40E_LINK_SPEED_25GB) {
7146                 req_fec = "None";
7147                 fec = "None";
7148                 an = "False";
7149
7150                 if (pf->hw.phy.link_info.an_info & I40E_AQ_AN_COMPLETED)
7151                         an = "True";
7152
7153                 if (pf->hw.phy.link_info.fec_info &
7154                     I40E_AQ_CONFIG_FEC_KR_ENA)
7155                         fec = "CL74 FC-FEC/BASE-R";
7156                 else if (pf->hw.phy.link_info.fec_info &
7157                          I40E_AQ_CONFIG_FEC_RS_ENA)
7158                         fec = "CL108 RS-FEC";
7159
7160                 /* 'CL108 RS-FEC' should be displayed when RS is requested, or
7161                  * both RS and FC are requested
7162                  */
7163                 if (vsi->back->hw.phy.link_info.req_fec_info &
7164                     (I40E_AQ_REQUEST_FEC_KR | I40E_AQ_REQUEST_FEC_RS)) {
7165                         if (vsi->back->hw.phy.link_info.req_fec_info &
7166                             I40E_AQ_REQUEST_FEC_RS)
7167                                 req_fec = "CL108 RS-FEC";
7168                         else
7169                                 req_fec = "CL74 FC-FEC/BASE-R";
7170                 }
7171                 netdev_info(vsi->netdev,
7172                             "NIC Link is Up, %sbps Full Duplex, Requested FEC: %s, Negotiated FEC: %s, Autoneg: %s, Flow Control: %s\n",
7173                             speed, req_fec, fec, an, fc);
7174         } else if (pf->hw.device_id == I40E_DEV_ID_KX_X722) {
7175                 req_fec = "None";
7176                 fec = "None";
7177                 an = "False";
7178
7179                 if (pf->hw.phy.link_info.an_info & I40E_AQ_AN_COMPLETED)
7180                         an = "True";
7181
7182                 if (pf->hw.phy.link_info.fec_info &
7183                     I40E_AQ_CONFIG_FEC_KR_ENA)
7184                         fec = "CL74 FC-FEC/BASE-R";
7185
7186                 if (pf->hw.phy.link_info.req_fec_info &
7187                     I40E_AQ_REQUEST_FEC_KR)
7188                         req_fec = "CL74 FC-FEC/BASE-R";
7189
7190                 netdev_info(vsi->netdev,
7191                             "NIC Link is Up, %sbps Full Duplex, Requested FEC: %s, Negotiated FEC: %s, Autoneg: %s, Flow Control: %s\n",
7192                             speed, req_fec, fec, an, fc);
7193         } else {
7194                 netdev_info(vsi->netdev,
7195                             "NIC Link is Up, %sbps Full Duplex, Flow Control: %s\n",
7196                             speed, fc);
7197         }
7198
7199 }
7200
7201 /**
7202  * i40e_up_complete - Finish the last steps of bringing up a connection
7203  * @vsi: the VSI being configured
7204  **/
7205 static int i40e_up_complete(struct i40e_vsi *vsi)
7206 {
7207         struct i40e_pf *pf = vsi->back;
7208         int err;
7209
7210         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7211                 i40e_vsi_configure_msix(vsi);
7212         else
7213                 i40e_configure_msi_and_legacy(vsi);
7214
7215         /* start rings */
7216         err = i40e_vsi_start_rings(vsi);
7217         if (err)
7218                 return err;
7219
7220         clear_bit(__I40E_VSI_DOWN, vsi->state);
7221         i40e_napi_enable_all(vsi);
7222         i40e_vsi_enable_irq(vsi);
7223
7224         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
7225             (vsi->netdev)) {
7226                 i40e_print_link_message(vsi, true);
7227                 netif_tx_start_all_queues(vsi->netdev);
7228                 netif_carrier_on(vsi->netdev);
7229         }
7230
7231         /* replay FDIR SB filters */
7232         if (vsi->type == I40E_VSI_FDIR) {
7233                 /* reset fd counters */
7234                 pf->fd_add_err = 0;
7235                 pf->fd_atr_cnt = 0;
7236                 i40e_fdir_filter_restore(vsi);
7237         }
7238
7239         /* On the next run of the service_task, notify any clients of the new
7240          * opened netdev
7241          */
7242         set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
7243         i40e_service_event_schedule(pf);
7244
7245         return 0;
7246 }
7247
7248 /**
7249  * i40e_vsi_reinit_locked - Reset the VSI
7250  * @vsi: the VSI being configured
7251  *
7252  * Rebuild the ring structs after some configuration
7253  * has changed, e.g. MTU size.
7254  **/
7255 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
7256 {
7257         struct i40e_pf *pf = vsi->back;
7258
7259         while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state))
7260                 usleep_range(1000, 2000);
7261         i40e_down(vsi);
7262
7263         i40e_up(vsi);
7264         clear_bit(__I40E_CONFIG_BUSY, pf->state);
7265 }
7266
7267 /**
7268  * i40e_force_link_state - Force the link status
7269  * @pf: board private structure
7270  * @is_up: whether the link state should be forced up or down
7271  **/
7272 static i40e_status i40e_force_link_state(struct i40e_pf *pf, bool is_up)
7273 {
7274         struct i40e_aq_get_phy_abilities_resp abilities;
7275         struct i40e_aq_set_phy_config config = {0};
7276         bool non_zero_phy_type = is_up;
7277         struct i40e_hw *hw = &pf->hw;
7278         i40e_status err;
7279         u64 mask;
7280         u8 speed;
7281
7282         /* Card might've been put in an unstable state by other drivers
7283          * and applications, which causes incorrect speed values being
7284          * set on startup. In order to clear speed registers, we call
7285          * get_phy_capabilities twice, once to get initial state of
7286          * available speeds, and once to get current PHY config.
7287          */
7288         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities,
7289                                            NULL);
7290         if (err) {
7291                 dev_err(&pf->pdev->dev,
7292                         "failed to get phy cap., ret =  %s last_status =  %s\n",
7293                         i40e_stat_str(hw, err),
7294                         i40e_aq_str(hw, hw->aq.asq_last_status));
7295                 return err;
7296         }
7297         speed = abilities.link_speed;
7298
7299         /* Get the current phy config */
7300         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
7301                                            NULL);
7302         if (err) {
7303                 dev_err(&pf->pdev->dev,
7304                         "failed to get phy cap., ret =  %s last_status =  %s\n",
7305                         i40e_stat_str(hw, err),
7306                         i40e_aq_str(hw, hw->aq.asq_last_status));
7307                 return err;
7308         }
7309
7310         /* If link needs to go up, but was not forced to go down,
7311          * and its speed values are OK, no need for a flap
7312          * if non_zero_phy_type was set, still need to force up
7313          */
7314         if (pf->flags & I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED)
7315                 non_zero_phy_type = true;
7316         else if (is_up && abilities.phy_type != 0 && abilities.link_speed != 0)
7317                 return I40E_SUCCESS;
7318
7319         /* To force link we need to set bits for all supported PHY types,
7320          * but there are now more than 32, so we need to split the bitmap
7321          * across two fields.
7322          */
7323         mask = I40E_PHY_TYPES_BITMASK;
7324         config.phy_type =
7325                 non_zero_phy_type ? cpu_to_le32((u32)(mask & 0xffffffff)) : 0;
7326         config.phy_type_ext =
7327                 non_zero_phy_type ? (u8)((mask >> 32) & 0xff) : 0;
7328         /* Copy the old settings, except of phy_type */
7329         config.abilities = abilities.abilities;
7330         if (pf->flags & I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED) {
7331                 if (is_up)
7332                         config.abilities |= I40E_AQ_PHY_ENABLE_LINK;
7333                 else
7334                         config.abilities &= ~(I40E_AQ_PHY_ENABLE_LINK);
7335         }
7336         if (abilities.link_speed != 0)
7337                 config.link_speed = abilities.link_speed;
7338         else
7339                 config.link_speed = speed;
7340         config.eee_capability = abilities.eee_capability;
7341         config.eeer = abilities.eeer_val;
7342         config.low_power_ctrl = abilities.d3_lpan;
7343         config.fec_config = abilities.fec_cfg_curr_mod_ext_info &
7344                             I40E_AQ_PHY_FEC_CONFIG_MASK;
7345         err = i40e_aq_set_phy_config(hw, &config, NULL);
7346
7347         if (err) {
7348                 dev_err(&pf->pdev->dev,
7349                         "set phy config ret =  %s last_status =  %s\n",
7350                         i40e_stat_str(&pf->hw, err),
7351                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7352                 return err;
7353         }
7354
7355         /* Update the link info */
7356         err = i40e_update_link_info(hw);
7357         if (err) {
7358                 /* Wait a little bit (on 40G cards it sometimes takes a really
7359                  * long time for link to come back from the atomic reset)
7360                  * and try once more
7361                  */
7362                 msleep(1000);
7363                 i40e_update_link_info(hw);
7364         }
7365
7366         i40e_aq_set_link_restart_an(hw, is_up, NULL);
7367
7368         return I40E_SUCCESS;
7369 }
7370
7371 /**
7372  * i40e_up - Bring the connection back up after being down
7373  * @vsi: the VSI being configured
7374  **/
7375 int i40e_up(struct i40e_vsi *vsi)
7376 {
7377         int err;
7378
7379         if (vsi->type == I40E_VSI_MAIN &&
7380             (vsi->back->flags & I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED ||
7381              vsi->back->flags & I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED))
7382                 i40e_force_link_state(vsi->back, true);
7383
7384         err = i40e_vsi_configure(vsi);
7385         if (!err)
7386                 err = i40e_up_complete(vsi);
7387
7388         return err;
7389 }
7390
7391 /**
7392  * i40e_down - Shutdown the connection processing
7393  * @vsi: the VSI being stopped
7394  **/
7395 void i40e_down(struct i40e_vsi *vsi)
7396 {
7397         int i;
7398
7399         /* It is assumed that the caller of this function
7400          * sets the vsi->state __I40E_VSI_DOWN bit.
7401          */
7402         if (vsi->netdev) {
7403                 netif_carrier_off(vsi->netdev);
7404                 netif_tx_disable(vsi->netdev);
7405         }
7406         i40e_vsi_disable_irq(vsi);
7407         i40e_vsi_stop_rings(vsi);
7408         if (vsi->type == I40E_VSI_MAIN &&
7409            (vsi->back->flags & I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED ||
7410             vsi->back->flags & I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED))
7411                 i40e_force_link_state(vsi->back, false);
7412         i40e_napi_disable_all(vsi);
7413
7414         for (i = 0; i < vsi->num_queue_pairs; i++) {
7415                 i40e_clean_tx_ring(vsi->tx_rings[i]);
7416                 if (i40e_enabled_xdp_vsi(vsi)) {
7417                         /* Make sure that in-progress ndo_xdp_xmit and
7418                          * ndo_xsk_wakeup calls are completed.
7419                          */
7420                         synchronize_rcu();
7421                         i40e_clean_tx_ring(vsi->xdp_rings[i]);
7422                 }
7423                 i40e_clean_rx_ring(vsi->rx_rings[i]);
7424         }
7425
7426 }
7427
7428 /**
7429  * i40e_validate_mqprio_qopt- validate queue mapping info
7430  * @vsi: the VSI being configured
7431  * @mqprio_qopt: queue parametrs
7432  **/
7433 static int i40e_validate_mqprio_qopt(struct i40e_vsi *vsi,
7434                                      struct tc_mqprio_qopt_offload *mqprio_qopt)
7435 {
7436         u64 sum_max_rate = 0;
7437         u64 max_rate = 0;
7438         int i;
7439
7440         if (mqprio_qopt->qopt.offset[0] != 0 ||
7441             mqprio_qopt->qopt.num_tc < 1 ||
7442             mqprio_qopt->qopt.num_tc > I40E_MAX_TRAFFIC_CLASS)
7443                 return -EINVAL;
7444         for (i = 0; ; i++) {
7445                 if (!mqprio_qopt->qopt.count[i])
7446                         return -EINVAL;
7447                 if (mqprio_qopt->min_rate[i]) {
7448                         dev_err(&vsi->back->pdev->dev,
7449                                 "Invalid min tx rate (greater than 0) specified\n");
7450                         return -EINVAL;
7451                 }
7452                 max_rate = mqprio_qopt->max_rate[i];
7453                 do_div(max_rate, I40E_BW_MBPS_DIVISOR);
7454                 sum_max_rate += max_rate;
7455
7456                 if (i >= mqprio_qopt->qopt.num_tc - 1)
7457                         break;
7458                 if (mqprio_qopt->qopt.offset[i + 1] !=
7459                     (mqprio_qopt->qopt.offset[i] + mqprio_qopt->qopt.count[i]))
7460                         return -EINVAL;
7461         }
7462         if (vsi->num_queue_pairs <
7463             (mqprio_qopt->qopt.offset[i] + mqprio_qopt->qopt.count[i])) {
7464                 dev_err(&vsi->back->pdev->dev,
7465                         "Failed to create traffic channel, insufficient number of queues.\n");
7466                 return -EINVAL;
7467         }
7468         if (sum_max_rate > i40e_get_link_speed(vsi)) {
7469                 dev_err(&vsi->back->pdev->dev,
7470                         "Invalid max tx rate specified\n");
7471                 return -EINVAL;
7472         }
7473         return 0;
7474 }
7475
7476 /**
7477  * i40e_vsi_set_default_tc_config - set default values for tc configuration
7478  * @vsi: the VSI being configured
7479  **/
7480 static void i40e_vsi_set_default_tc_config(struct i40e_vsi *vsi)
7481 {
7482         u16 qcount;
7483         int i;
7484
7485         /* Only TC0 is enabled */
7486         vsi->tc_config.numtc = 1;
7487         vsi->tc_config.enabled_tc = 1;
7488         qcount = min_t(int, vsi->alloc_queue_pairs,
7489                        i40e_pf_get_max_q_per_tc(vsi->back));
7490         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
7491                 /* For the TC that is not enabled set the offset to default
7492                  * queue and allocate one queue for the given TC.
7493                  */
7494                 vsi->tc_config.tc_info[i].qoffset = 0;
7495                 if (i == 0)
7496                         vsi->tc_config.tc_info[i].qcount = qcount;
7497                 else
7498                         vsi->tc_config.tc_info[i].qcount = 1;
7499                 vsi->tc_config.tc_info[i].netdev_tc = 0;
7500         }
7501 }
7502
7503 /**
7504  * i40e_del_macvlan_filter
7505  * @hw: pointer to the HW structure
7506  * @seid: seid of the channel VSI
7507  * @macaddr: the mac address to apply as a filter
7508  * @aq_err: store the admin Q error
7509  *
7510  * This function deletes a mac filter on the channel VSI which serves as the
7511  * macvlan. Returns 0 on success.
7512  **/
7513 static i40e_status i40e_del_macvlan_filter(struct i40e_hw *hw, u16 seid,
7514                                            const u8 *macaddr, int *aq_err)
7515 {
7516         struct i40e_aqc_remove_macvlan_element_data element;
7517         i40e_status status;
7518
7519         memset(&element, 0, sizeof(element));
7520         ether_addr_copy(element.mac_addr, macaddr);
7521         element.vlan_tag = 0;
7522         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
7523         status = i40e_aq_remove_macvlan(hw, seid, &element, 1, NULL);
7524         *aq_err = hw->aq.asq_last_status;
7525
7526         return status;
7527 }
7528
7529 /**
7530  * i40e_add_macvlan_filter
7531  * @hw: pointer to the HW structure
7532  * @seid: seid of the channel VSI
7533  * @macaddr: the mac address to apply as a filter
7534  * @aq_err: store the admin Q error
7535  *
7536  * This function adds a mac filter on the channel VSI which serves as the
7537  * macvlan. Returns 0 on success.
7538  **/
7539 static i40e_status i40e_add_macvlan_filter(struct i40e_hw *hw, u16 seid,
7540                                            const u8 *macaddr, int *aq_err)
7541 {
7542         struct i40e_aqc_add_macvlan_element_data element;
7543         i40e_status status;
7544         u16 cmd_flags = 0;
7545
7546         ether_addr_copy(element.mac_addr, macaddr);
7547         element.vlan_tag = 0;
7548         element.queue_number = 0;
7549         element.match_method = I40E_AQC_MM_ERR_NO_RES;
7550         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
7551         element.flags = cpu_to_le16(cmd_flags);
7552         status = i40e_aq_add_macvlan(hw, seid, &element, 1, NULL);
7553         *aq_err = hw->aq.asq_last_status;
7554
7555         return status;
7556 }
7557
7558 /**
7559  * i40e_reset_ch_rings - Reset the queue contexts in a channel
7560  * @vsi: the VSI we want to access
7561  * @ch: the channel we want to access
7562  */
7563 static void i40e_reset_ch_rings(struct i40e_vsi *vsi, struct i40e_channel *ch)
7564 {
7565         struct i40e_ring *tx_ring, *rx_ring;
7566         u16 pf_q;
7567         int i;
7568
7569         for (i = 0; i < ch->num_queue_pairs; i++) {
7570                 pf_q = ch->base_queue + i;
7571                 tx_ring = vsi->tx_rings[pf_q];
7572                 tx_ring->ch = NULL;
7573                 rx_ring = vsi->rx_rings[pf_q];
7574                 rx_ring->ch = NULL;
7575         }
7576 }
7577
7578 /**
7579  * i40e_free_macvlan_channels
7580  * @vsi: the VSI we want to access
7581  *
7582  * This function frees the Qs of the channel VSI from
7583  * the stack and also deletes the channel VSIs which
7584  * serve as macvlans.
7585  */
7586 static void i40e_free_macvlan_channels(struct i40e_vsi *vsi)
7587 {
7588         struct i40e_channel *ch, *ch_tmp;
7589         int ret;
7590
7591         if (list_empty(&vsi->macvlan_list))
7592                 return;
7593
7594         list_for_each_entry_safe(ch, ch_tmp, &vsi->macvlan_list, list) {
7595                 struct i40e_vsi *parent_vsi;
7596
7597                 if (i40e_is_channel_macvlan(ch)) {
7598                         i40e_reset_ch_rings(vsi, ch);
7599                         clear_bit(ch->fwd->bit_no, vsi->fwd_bitmask);
7600                         netdev_unbind_sb_channel(vsi->netdev, ch->fwd->netdev);
7601                         netdev_set_sb_channel(ch->fwd->netdev, 0);
7602                         kfree(ch->fwd);
7603                         ch->fwd = NULL;
7604                 }
7605
7606                 list_del(&ch->list);
7607                 parent_vsi = ch->parent_vsi;
7608                 if (!parent_vsi || !ch->initialized) {
7609                         kfree(ch);
7610                         continue;
7611                 }
7612
7613                 /* remove the VSI */
7614                 ret = i40e_aq_delete_element(&vsi->back->hw, ch->seid,
7615                                              NULL);
7616                 if (ret)
7617                         dev_err(&vsi->back->pdev->dev,
7618                                 "unable to remove channel (%d) for parent VSI(%d)\n",
7619                                 ch->seid, parent_vsi->seid);
7620                 kfree(ch);
7621         }
7622         vsi->macvlan_cnt = 0;
7623 }
7624
7625 /**
7626  * i40e_fwd_ring_up - bring the macvlan device up
7627  * @vsi: the VSI we want to access
7628  * @vdev: macvlan netdevice
7629  * @fwd: the private fwd structure
7630  */
7631 static int i40e_fwd_ring_up(struct i40e_vsi *vsi, struct net_device *vdev,
7632                             struct i40e_fwd_adapter *fwd)
7633 {
7634         struct i40e_channel *ch = NULL, *ch_tmp, *iter;
7635         int ret = 0, num_tc = 1,  i, aq_err;
7636         struct i40e_pf *pf = vsi->back;
7637         struct i40e_hw *hw = &pf->hw;
7638
7639         /* Go through the list and find an available channel */
7640         list_for_each_entry_safe(iter, ch_tmp, &vsi->macvlan_list, list) {
7641                 if (!i40e_is_channel_macvlan(iter)) {
7642                         iter->fwd = fwd;
7643                         /* record configuration for macvlan interface in vdev */
7644                         for (i = 0; i < num_tc; i++)
7645                                 netdev_bind_sb_channel_queue(vsi->netdev, vdev,
7646                                                              i,
7647                                                              iter->num_queue_pairs,
7648                                                              iter->base_queue);
7649                         for (i = 0; i < iter->num_queue_pairs; i++) {
7650                                 struct i40e_ring *tx_ring, *rx_ring;
7651                                 u16 pf_q;
7652
7653                                 pf_q = iter->base_queue + i;
7654
7655                                 /* Get to TX ring ptr */
7656                                 tx_ring = vsi->tx_rings[pf_q];
7657                                 tx_ring->ch = iter;
7658
7659                                 /* Get the RX ring ptr */
7660                                 rx_ring = vsi->rx_rings[pf_q];
7661                                 rx_ring->ch = iter;
7662                         }
7663                         ch = iter;
7664                         break;
7665                 }
7666         }
7667
7668         if (!ch)
7669                 return -EINVAL;
7670
7671         /* Guarantee all rings are updated before we update the
7672          * MAC address filter.
7673          */
7674         wmb();
7675
7676         /* Add a mac filter */
7677         ret = i40e_add_macvlan_filter(hw, ch->seid, vdev->dev_addr, &aq_err);
7678         if (ret) {
7679                 /* if we cannot add the MAC rule then disable the offload */
7680                 macvlan_release_l2fw_offload(vdev);
7681                 for (i = 0; i < ch->num_queue_pairs; i++) {
7682                         struct i40e_ring *rx_ring;
7683                         u16 pf_q;
7684
7685                         pf_q = ch->base_queue + i;
7686                         rx_ring = vsi->rx_rings[pf_q];
7687                         rx_ring->netdev = NULL;
7688                 }
7689                 dev_info(&pf->pdev->dev,
7690                          "Error adding mac filter on macvlan err %s, aq_err %s\n",
7691                           i40e_stat_str(hw, ret),
7692                           i40e_aq_str(hw, aq_err));
7693                 netdev_err(vdev, "L2fwd offload disabled to L2 filter error\n");
7694         }
7695
7696         return ret;
7697 }
7698
7699 /**
7700  * i40e_setup_macvlans - create the channels which will be macvlans
7701  * @vsi: the VSI we want to access
7702  * @macvlan_cnt: no. of macvlans to be setup
7703  * @qcnt: no. of Qs per macvlan
7704  * @vdev: macvlan netdevice
7705  */
7706 static int i40e_setup_macvlans(struct i40e_vsi *vsi, u16 macvlan_cnt, u16 qcnt,
7707                                struct net_device *vdev)
7708 {
7709         struct i40e_pf *pf = vsi->back;
7710         struct i40e_hw *hw = &pf->hw;
7711         struct i40e_vsi_context ctxt;
7712         u16 sections, qmap, num_qps;
7713         struct i40e_channel *ch;
7714         int i, pow, ret = 0;
7715         u8 offset = 0;
7716
7717         if (vsi->type != I40E_VSI_MAIN || !macvlan_cnt)
7718                 return -EINVAL;
7719
7720         num_qps = vsi->num_queue_pairs - (macvlan_cnt * qcnt);
7721
7722         /* find the next higher power-of-2 of num queue pairs */
7723         pow = fls(roundup_pow_of_two(num_qps) - 1);
7724
7725         qmap = (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
7726                 (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
7727
7728         /* Setup context bits for the main VSI */
7729         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
7730         sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
7731         memset(&ctxt, 0, sizeof(ctxt));
7732         ctxt.seid = vsi->seid;
7733         ctxt.pf_num = vsi->back->hw.pf_id;
7734         ctxt.vf_num = 0;
7735         ctxt.uplink_seid = vsi->uplink_seid;
7736         ctxt.info = vsi->info;
7737         ctxt.info.tc_mapping[0] = cpu_to_le16(qmap);
7738         ctxt.info.mapping_flags |= cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
7739         ctxt.info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
7740         ctxt.info.valid_sections |= cpu_to_le16(sections);
7741
7742         /* Reconfigure RSS for main VSI with new max queue count */
7743         vsi->rss_size = max_t(u16, num_qps, qcnt);
7744         ret = i40e_vsi_config_rss(vsi);
7745         if (ret) {
7746                 dev_info(&pf->pdev->dev,
7747                          "Failed to reconfig RSS for num_queues (%u)\n",
7748                          vsi->rss_size);
7749                 return ret;
7750         }
7751         vsi->reconfig_rss = true;
7752         dev_dbg(&vsi->back->pdev->dev,
7753                 "Reconfigured RSS with num_queues (%u)\n", vsi->rss_size);
7754         vsi->next_base_queue = num_qps;
7755         vsi->cnt_q_avail = vsi->num_queue_pairs - num_qps;
7756
7757         /* Update the VSI after updating the VSI queue-mapping
7758          * information
7759          */
7760         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
7761         if (ret) {
7762                 dev_info(&pf->pdev->dev,
7763                          "Update vsi tc config failed, err %s aq_err %s\n",
7764                          i40e_stat_str(hw, ret),
7765                          i40e_aq_str(hw, hw->aq.asq_last_status));
7766                 return ret;
7767         }
7768         /* update the local VSI info with updated queue map */
7769         i40e_vsi_update_queue_map(vsi, &ctxt);
7770         vsi->info.valid_sections = 0;
7771
7772         /* Create channels for macvlans */
7773         INIT_LIST_HEAD(&vsi->macvlan_list);
7774         for (i = 0; i < macvlan_cnt; i++) {
7775                 ch = kzalloc(sizeof(*ch), GFP_KERNEL);
7776                 if (!ch) {
7777                         ret = -ENOMEM;
7778                         goto err_free;
7779                 }
7780                 INIT_LIST_HEAD(&ch->list);
7781                 ch->num_queue_pairs = qcnt;
7782                 if (!i40e_setup_channel(pf, vsi, ch)) {
7783                         ret = -EINVAL;
7784                         kfree(ch);
7785                         goto err_free;
7786                 }
7787                 ch->parent_vsi = vsi;
7788                 vsi->cnt_q_avail -= ch->num_queue_pairs;
7789                 vsi->macvlan_cnt++;
7790                 list_add_tail(&ch->list, &vsi->macvlan_list);
7791         }
7792
7793         return ret;
7794
7795 err_free:
7796         dev_info(&pf->pdev->dev, "Failed to setup macvlans\n");
7797         i40e_free_macvlan_channels(vsi);
7798
7799         return ret;
7800 }
7801
7802 /**
7803  * i40e_fwd_add - configure macvlans
7804  * @netdev: net device to configure
7805  * @vdev: macvlan netdevice
7806  **/
7807 static void *i40e_fwd_add(struct net_device *netdev, struct net_device *vdev)
7808 {
7809         struct i40e_netdev_priv *np = netdev_priv(netdev);
7810         u16 q_per_macvlan = 0, macvlan_cnt = 0, vectors;
7811         struct i40e_vsi *vsi = np->vsi;
7812         struct i40e_pf *pf = vsi->back;
7813         struct i40e_fwd_adapter *fwd;
7814         int avail_macvlan, ret;
7815
7816         if ((pf->flags & I40E_FLAG_DCB_ENABLED)) {
7817                 netdev_info(netdev, "Macvlans are not supported when DCB is enabled\n");
7818                 return ERR_PTR(-EINVAL);
7819         }
7820         if ((pf->flags & I40E_FLAG_TC_MQPRIO)) {
7821                 netdev_info(netdev, "Macvlans are not supported when HW TC offload is on\n");
7822                 return ERR_PTR(-EINVAL);
7823         }
7824         if (pf->num_lan_msix < I40E_MIN_MACVLAN_VECTORS) {
7825                 netdev_info(netdev, "Not enough vectors available to support macvlans\n");
7826                 return ERR_PTR(-EINVAL);
7827         }
7828
7829         /* The macvlan device has to be a single Q device so that the
7830          * tc_to_txq field can be reused to pick the tx queue.
7831          */
7832         if (netif_is_multiqueue(vdev))
7833                 return ERR_PTR(-ERANGE);
7834
7835         if (!vsi->macvlan_cnt) {
7836                 /* reserve bit 0 for the pf device */
7837                 set_bit(0, vsi->fwd_bitmask);
7838
7839                 /* Try to reserve as many queues as possible for macvlans. First
7840                  * reserve 3/4th of max vectors, then half, then quarter and
7841                  * calculate Qs per macvlan as you go
7842                  */
7843                 vectors = pf->num_lan_msix;
7844                 if (vectors <= I40E_MAX_MACVLANS && vectors > 64) {
7845                         /* allocate 4 Qs per macvlan and 32 Qs to the PF*/
7846                         q_per_macvlan = 4;
7847                         macvlan_cnt = (vectors - 32) / 4;
7848                 } else if (vectors <= 64 && vectors > 32) {
7849                         /* allocate 2 Qs per macvlan and 16 Qs to the PF*/
7850                         q_per_macvlan = 2;
7851                         macvlan_cnt = (vectors - 16) / 2;
7852                 } else if (vectors <= 32 && vectors > 16) {
7853                         /* allocate 1 Q per macvlan and 16 Qs to the PF*/
7854                         q_per_macvlan = 1;
7855                         macvlan_cnt = vectors - 16;
7856                 } else if (vectors <= 16 && vectors > 8) {
7857                         /* allocate 1 Q per macvlan and 8 Qs to the PF */
7858                         q_per_macvlan = 1;
7859                         macvlan_cnt = vectors - 8;
7860                 } else {
7861                         /* allocate 1 Q per macvlan and 1 Q to the PF */
7862                         q_per_macvlan = 1;
7863                         macvlan_cnt = vectors - 1;
7864                 }
7865
7866                 if (macvlan_cnt == 0)
7867                         return ERR_PTR(-EBUSY);
7868
7869                 /* Quiesce VSI queues */
7870                 i40e_quiesce_vsi(vsi);
7871
7872                 /* sets up the macvlans but does not "enable" them */
7873                 ret = i40e_setup_macvlans(vsi, macvlan_cnt, q_per_macvlan,
7874                                           vdev);
7875                 if (ret)
7876                         return ERR_PTR(ret);
7877
7878                 /* Unquiesce VSI */
7879                 i40e_unquiesce_vsi(vsi);
7880         }
7881         avail_macvlan = find_first_zero_bit(vsi->fwd_bitmask,
7882                                             vsi->macvlan_cnt);
7883         if (avail_macvlan >= I40E_MAX_MACVLANS)
7884                 return ERR_PTR(-EBUSY);
7885
7886         /* create the fwd struct */
7887         fwd = kzalloc(sizeof(*fwd), GFP_KERNEL);
7888         if (!fwd)
7889                 return ERR_PTR(-ENOMEM);
7890
7891         set_bit(avail_macvlan, vsi->fwd_bitmask);
7892         fwd->bit_no = avail_macvlan;
7893         netdev_set_sb_channel(vdev, avail_macvlan);
7894         fwd->netdev = vdev;
7895
7896         if (!netif_running(netdev))
7897                 return fwd;
7898
7899         /* Set fwd ring up */
7900         ret = i40e_fwd_ring_up(vsi, vdev, fwd);
7901         if (ret) {
7902                 /* unbind the queues and drop the subordinate channel config */
7903                 netdev_unbind_sb_channel(netdev, vdev);
7904                 netdev_set_sb_channel(vdev, 0);
7905
7906                 kfree(fwd);
7907                 return ERR_PTR(-EINVAL);
7908         }
7909
7910         return fwd;
7911 }
7912
7913 /**
7914  * i40e_del_all_macvlans - Delete all the mac filters on the channels
7915  * @vsi: the VSI we want to access
7916  */
7917 static void i40e_del_all_macvlans(struct i40e_vsi *vsi)
7918 {
7919         struct i40e_channel *ch, *ch_tmp;
7920         struct i40e_pf *pf = vsi->back;
7921         struct i40e_hw *hw = &pf->hw;
7922         int aq_err, ret = 0;
7923
7924         if (list_empty(&vsi->macvlan_list))
7925                 return;
7926
7927         list_for_each_entry_safe(ch, ch_tmp, &vsi->macvlan_list, list) {
7928                 if (i40e_is_channel_macvlan(ch)) {
7929                         ret = i40e_del_macvlan_filter(hw, ch->seid,
7930                                                       i40e_channel_mac(ch),
7931                                                       &aq_err);
7932                         if (!ret) {
7933                                 /* Reset queue contexts */
7934                                 i40e_reset_ch_rings(vsi, ch);
7935                                 clear_bit(ch->fwd->bit_no, vsi->fwd_bitmask);
7936                                 netdev_unbind_sb_channel(vsi->netdev,
7937                                                          ch->fwd->netdev);
7938                                 netdev_set_sb_channel(ch->fwd->netdev, 0);
7939                                 kfree(ch->fwd);
7940                                 ch->fwd = NULL;
7941                         }
7942                 }
7943         }
7944 }
7945
7946 /**
7947  * i40e_fwd_del - delete macvlan interfaces
7948  * @netdev: net device to configure
7949  * @vdev: macvlan netdevice
7950  */
7951 static void i40e_fwd_del(struct net_device *netdev, void *vdev)
7952 {
7953         struct i40e_netdev_priv *np = netdev_priv(netdev);
7954         struct i40e_fwd_adapter *fwd = vdev;
7955         struct i40e_channel *ch, *ch_tmp;
7956         struct i40e_vsi *vsi = np->vsi;
7957         struct i40e_pf *pf = vsi->back;
7958         struct i40e_hw *hw = &pf->hw;
7959         int aq_err, ret = 0;
7960
7961         /* Find the channel associated with the macvlan and del mac filter */
7962         list_for_each_entry_safe(ch, ch_tmp, &vsi->macvlan_list, list) {
7963                 if (i40e_is_channel_macvlan(ch) &&
7964                     ether_addr_equal(i40e_channel_mac(ch),
7965                                      fwd->netdev->dev_addr)) {
7966                         ret = i40e_del_macvlan_filter(hw, ch->seid,
7967                                                       i40e_channel_mac(ch),
7968                                                       &aq_err);
7969                         if (!ret) {
7970                                 /* Reset queue contexts */
7971                                 i40e_reset_ch_rings(vsi, ch);
7972                                 clear_bit(ch->fwd->bit_no, vsi->fwd_bitmask);
7973                                 netdev_unbind_sb_channel(netdev, fwd->netdev);
7974                                 netdev_set_sb_channel(fwd->netdev, 0);
7975                                 kfree(ch->fwd);
7976                                 ch->fwd = NULL;
7977                         } else {
7978                                 dev_info(&pf->pdev->dev,
7979                                          "Error deleting mac filter on macvlan err %s, aq_err %s\n",
7980                                           i40e_stat_str(hw, ret),
7981                                           i40e_aq_str(hw, aq_err));
7982                         }
7983                         break;
7984                 }
7985         }
7986 }
7987
7988 /**
7989  * i40e_setup_tc - configure multiple traffic classes
7990  * @netdev: net device to configure
7991  * @type_data: tc offload data
7992  **/
7993 static int i40e_setup_tc(struct net_device *netdev, void *type_data)
7994 {
7995         struct tc_mqprio_qopt_offload *mqprio_qopt = type_data;
7996         struct i40e_netdev_priv *np = netdev_priv(netdev);
7997         struct i40e_vsi *vsi = np->vsi;
7998         struct i40e_pf *pf = vsi->back;
7999         u8 enabled_tc = 0, num_tc, hw;
8000         bool need_reset = false;
8001         int old_queue_pairs;
8002         int ret = -EINVAL;
8003         u16 mode;
8004         int i;
8005
8006         old_queue_pairs = vsi->num_queue_pairs;
8007         num_tc = mqprio_qopt->qopt.num_tc;
8008         hw = mqprio_qopt->qopt.hw;
8009         mode = mqprio_qopt->mode;
8010         if (!hw) {
8011                 pf->flags &= ~I40E_FLAG_TC_MQPRIO;
8012                 memcpy(&vsi->mqprio_qopt, mqprio_qopt, sizeof(*mqprio_qopt));
8013                 goto config_tc;
8014         }
8015
8016         /* Check if MFP enabled */
8017         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
8018                 netdev_info(netdev,
8019                             "Configuring TC not supported in MFP mode\n");
8020                 return ret;
8021         }
8022         switch (mode) {
8023         case TC_MQPRIO_MODE_DCB:
8024                 pf->flags &= ~I40E_FLAG_TC_MQPRIO;
8025
8026                 /* Check if DCB enabled to continue */
8027                 if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
8028                         netdev_info(netdev,
8029                                     "DCB is not enabled for adapter\n");
8030                         return ret;
8031                 }
8032
8033                 /* Check whether tc count is within enabled limit */
8034                 if (num_tc > i40e_pf_get_num_tc(pf)) {
8035                         netdev_info(netdev,
8036                                     "TC count greater than enabled on link for adapter\n");
8037                         return ret;
8038                 }
8039                 break;
8040         case TC_MQPRIO_MODE_CHANNEL:
8041                 if (pf->flags & I40E_FLAG_DCB_ENABLED) {
8042                         netdev_info(netdev,
8043                                     "Full offload of TC Mqprio options is not supported when DCB is enabled\n");
8044                         return ret;
8045                 }
8046                 if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
8047                         return ret;
8048                 ret = i40e_validate_mqprio_qopt(vsi, mqprio_qopt);
8049                 if (ret)
8050                         return ret;
8051                 memcpy(&vsi->mqprio_qopt, mqprio_qopt,
8052                        sizeof(*mqprio_qopt));
8053                 pf->flags |= I40E_FLAG_TC_MQPRIO;
8054                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
8055                 break;
8056         default:
8057                 return -EINVAL;
8058         }
8059
8060 config_tc:
8061         /* Generate TC map for number of tc requested */
8062         for (i = 0; i < num_tc; i++)
8063                 enabled_tc |= BIT(i);
8064
8065         /* Requesting same TC configuration as already enabled */
8066         if (enabled_tc == vsi->tc_config.enabled_tc &&
8067             mode != TC_MQPRIO_MODE_CHANNEL)
8068                 return 0;
8069
8070         /* Quiesce VSI queues */
8071         i40e_quiesce_vsi(vsi);
8072
8073         if (!hw && !(pf->flags & I40E_FLAG_TC_MQPRIO))
8074                 i40e_remove_queue_channels(vsi);
8075
8076         /* Configure VSI for enabled TCs */
8077         ret = i40e_vsi_config_tc(vsi, enabled_tc);
8078         if (ret) {
8079                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
8080                             vsi->seid);
8081                 need_reset = true;
8082                 goto exit;
8083         } else if (enabled_tc &&
8084                    (!is_power_of_2(vsi->tc_config.tc_info[0].qcount))) {
8085                 netdev_info(netdev,
8086                             "Failed to create channel. Override queues (%u) not power of 2\n",
8087                             vsi->tc_config.tc_info[0].qcount);
8088                 ret = -EINVAL;
8089                 need_reset = true;
8090                 goto exit;
8091         }
8092
8093         dev_info(&vsi->back->pdev->dev,
8094                  "Setup channel (id:%u) utilizing num_queues %d\n",
8095                  vsi->seid, vsi->tc_config.tc_info[0].qcount);
8096
8097         if (pf->flags & I40E_FLAG_TC_MQPRIO) {
8098                 if (vsi->mqprio_qopt.max_rate[0]) {
8099                         u64 max_tx_rate = vsi->mqprio_qopt.max_rate[0];
8100
8101                         do_div(max_tx_rate, I40E_BW_MBPS_DIVISOR);
8102                         ret = i40e_set_bw_limit(vsi, vsi->seid, max_tx_rate);
8103                         if (!ret) {
8104                                 u64 credits = max_tx_rate;
8105
8106                                 do_div(credits, I40E_BW_CREDIT_DIVISOR);
8107                                 dev_dbg(&vsi->back->pdev->dev,
8108                                         "Set tx rate of %llu Mbps (count of 50Mbps %llu) for vsi->seid %u\n",
8109                                         max_tx_rate,
8110                                         credits,
8111                                         vsi->seid);
8112                         } else {
8113                                 need_reset = true;
8114                                 goto exit;
8115                         }
8116                 }
8117                 ret = i40e_configure_queue_channels(vsi);
8118                 if (ret) {
8119                         vsi->num_queue_pairs = old_queue_pairs;
8120                         netdev_info(netdev,
8121                                     "Failed configuring queue channels\n");
8122                         need_reset = true;
8123                         goto exit;
8124                 }
8125         }
8126
8127 exit:
8128         /* Reset the configuration data to defaults, only TC0 is enabled */
8129         if (need_reset) {
8130                 i40e_vsi_set_default_tc_config(vsi);
8131                 need_reset = false;
8132         }
8133
8134         /* Unquiesce VSI */
8135         i40e_unquiesce_vsi(vsi);
8136         return ret;
8137 }
8138
8139 /**
8140  * i40e_set_cld_element - sets cloud filter element data
8141  * @filter: cloud filter rule
8142  * @cld: ptr to cloud filter element data
8143  *
8144  * This is helper function to copy data into cloud filter element
8145  **/
8146 static inline void
8147 i40e_set_cld_element(struct i40e_cloud_filter *filter,
8148                      struct i40e_aqc_cloud_filters_element_data *cld)
8149 {
8150         u32 ipa;
8151         int i;
8152
8153         memset(cld, 0, sizeof(*cld));
8154         ether_addr_copy(cld->outer_mac, filter->dst_mac);
8155         ether_addr_copy(cld->inner_mac, filter->src_mac);
8156
8157         if (filter->n_proto != ETH_P_IP && filter->n_proto != ETH_P_IPV6)
8158                 return;
8159
8160         if (filter->n_proto == ETH_P_IPV6) {
8161 #define IPV6_MAX_INDEX  (ARRAY_SIZE(filter->dst_ipv6) - 1)
8162                 for (i = 0; i < ARRAY_SIZE(filter->dst_ipv6); i++) {
8163                         ipa = be32_to_cpu(filter->dst_ipv6[IPV6_MAX_INDEX - i]);
8164
8165                         *(__le32 *)&cld->ipaddr.raw_v6.data[i * 2] = cpu_to_le32(ipa);
8166                 }
8167         } else {
8168                 ipa = be32_to_cpu(filter->dst_ipv4);
8169
8170                 memcpy(&cld->ipaddr.v4.data, &ipa, sizeof(ipa));
8171         }
8172
8173         cld->inner_vlan = cpu_to_le16(ntohs(filter->vlan_id));
8174
8175         /* tenant_id is not supported by FW now, once the support is enabled
8176          * fill the cld->tenant_id with cpu_to_le32(filter->tenant_id)
8177          */
8178         if (filter->tenant_id)
8179                 return;
8180 }
8181
8182 /**
8183  * i40e_add_del_cloud_filter - Add/del cloud filter
8184  * @vsi: pointer to VSI
8185  * @filter: cloud filter rule
8186  * @add: if true, add, if false, delete
8187  *
8188  * Add or delete a cloud filter for a specific flow spec.
8189  * Returns 0 if the filter were successfully added.
8190  **/
8191 int i40e_add_del_cloud_filter(struct i40e_vsi *vsi,
8192                               struct i40e_cloud_filter *filter, bool add)
8193 {
8194         struct i40e_aqc_cloud_filters_element_data cld_filter;
8195         struct i40e_pf *pf = vsi->back;
8196         int ret;
8197         static const u16 flag_table[128] = {
8198                 [I40E_CLOUD_FILTER_FLAGS_OMAC]  =
8199                         I40E_AQC_ADD_CLOUD_FILTER_OMAC,
8200                 [I40E_CLOUD_FILTER_FLAGS_IMAC]  =
8201                         I40E_AQC_ADD_CLOUD_FILTER_IMAC,
8202                 [I40E_CLOUD_FILTER_FLAGS_IMAC_IVLAN]  =
8203                         I40E_AQC_ADD_CLOUD_FILTER_IMAC_IVLAN,
8204                 [I40E_CLOUD_FILTER_FLAGS_IMAC_TEN_ID] =
8205                         I40E_AQC_ADD_CLOUD_FILTER_IMAC_TEN_ID,
8206                 [I40E_CLOUD_FILTER_FLAGS_OMAC_TEN_ID_IMAC] =
8207                         I40E_AQC_ADD_CLOUD_FILTER_OMAC_TEN_ID_IMAC,
8208                 [I40E_CLOUD_FILTER_FLAGS_IMAC_IVLAN_TEN_ID] =
8209                         I40E_AQC_ADD_CLOUD_FILTER_IMAC_IVLAN_TEN_ID,
8210                 [I40E_CLOUD_FILTER_FLAGS_IIP] =
8211                         I40E_AQC_ADD_CLOUD_FILTER_IIP,
8212         };
8213
8214         if (filter->flags >= ARRAY_SIZE(flag_table))
8215                 return I40E_ERR_CONFIG;
8216
8217         memset(&cld_filter, 0, sizeof(cld_filter));
8218
8219         /* copy element needed to add cloud filter from filter */
8220         i40e_set_cld_element(filter, &cld_filter);
8221
8222         if (filter->tunnel_type != I40E_CLOUD_TNL_TYPE_NONE)
8223                 cld_filter.flags = cpu_to_le16(filter->tunnel_type <<
8224                                              I40E_AQC_ADD_CLOUD_TNL_TYPE_SHIFT);
8225
8226         if (filter->n_proto == ETH_P_IPV6)
8227                 cld_filter.flags |= cpu_to_le16(flag_table[filter->flags] |
8228                                                 I40E_AQC_ADD_CLOUD_FLAGS_IPV6);
8229         else
8230                 cld_filter.flags |= cpu_to_le16(flag_table[filter->flags] |
8231                                                 I40E_AQC_ADD_CLOUD_FLAGS_IPV4);
8232
8233         if (add)
8234                 ret = i40e_aq_add_cloud_filters(&pf->hw, filter->seid,
8235                                                 &cld_filter, 1);
8236         else
8237                 ret = i40e_aq_rem_cloud_filters(&pf->hw, filter->seid,
8238                                                 &cld_filter, 1);
8239         if (ret)
8240                 dev_dbg(&pf->pdev->dev,
8241                         "Failed to %s cloud filter using l4 port %u, err %d aq_err %d\n",
8242                         add ? "add" : "delete", filter->dst_port, ret,
8243                         pf->hw.aq.asq_last_status);
8244         else
8245                 dev_info(&pf->pdev->dev,
8246                          "%s cloud filter for VSI: %d\n",
8247                          add ? "Added" : "Deleted", filter->seid);
8248         return ret;
8249 }
8250
8251 /**
8252  * i40e_add_del_cloud_filter_big_buf - Add/del cloud filter using big_buf
8253  * @vsi: pointer to VSI
8254  * @filter: cloud filter rule
8255  * @add: if true, add, if false, delete
8256  *
8257  * Add or delete a cloud filter for a specific flow spec using big buffer.
8258  * Returns 0 if the filter were successfully added.
8259  **/
8260 int i40e_add_del_cloud_filter_big_buf(struct i40e_vsi *vsi,
8261                                       struct i40e_cloud_filter *filter,
8262                                       bool add)
8263 {
8264         struct i40e_aqc_cloud_filters_element_bb cld_filter;
8265         struct i40e_pf *pf = vsi->back;
8266         int ret;
8267
8268         /* Both (src/dst) valid mac_addr are not supported */
8269         if ((is_valid_ether_addr(filter->dst_mac) &&
8270              is_valid_ether_addr(filter->src_mac)) ||
8271             (is_multicast_ether_addr(filter->dst_mac) &&
8272              is_multicast_ether_addr(filter->src_mac)))
8273                 return -EOPNOTSUPP;
8274
8275         /* Big buffer cloud filter needs 'L4 port' to be non-zero. Also, UDP
8276          * ports are not supported via big buffer now.
8277          */
8278         if (!filter->dst_port || filter->ip_proto == IPPROTO_UDP)
8279                 return -EOPNOTSUPP;
8280
8281         /* adding filter using src_port/src_ip is not supported at this stage */
8282         if (filter->src_port ||
8283             (filter->src_ipv4 && filter->n_proto != ETH_P_IPV6) ||
8284             !ipv6_addr_any(&filter->ip.v6.src_ip6))
8285                 return -EOPNOTSUPP;
8286
8287         memset(&cld_filter, 0, sizeof(cld_filter));
8288
8289         /* copy element needed to add cloud filter from filter */
8290         i40e_set_cld_element(filter, &cld_filter.element);
8291
8292         if (is_valid_ether_addr(filter->dst_mac) ||
8293             is_valid_ether_addr(filter->src_mac) ||
8294             is_multicast_ether_addr(filter->dst_mac) ||
8295             is_multicast_ether_addr(filter->src_mac)) {
8296                 /* MAC + IP : unsupported mode */
8297                 if (filter->dst_ipv4)
8298                         return -EOPNOTSUPP;
8299
8300                 /* since we validated that L4 port must be valid before
8301                  * we get here, start with respective "flags" value
8302                  * and update if vlan is present or not
8303                  */
8304                 cld_filter.element.flags =
8305                         cpu_to_le16(I40E_AQC_ADD_CLOUD_FILTER_MAC_PORT);
8306
8307                 if (filter->vlan_id) {
8308                         cld_filter.element.flags =
8309                         cpu_to_le16(I40E_AQC_ADD_CLOUD_FILTER_MAC_VLAN_PORT);
8310                 }
8311
8312         } else if ((filter->dst_ipv4 && filter->n_proto != ETH_P_IPV6) ||
8313                    !ipv6_addr_any(&filter->ip.v6.dst_ip6)) {
8314                 cld_filter.element.flags =
8315                                 cpu_to_le16(I40E_AQC_ADD_CLOUD_FILTER_IP_PORT);
8316                 if (filter->n_proto == ETH_P_IPV6)
8317                         cld_filter.element.flags |=
8318                                 cpu_to_le16(I40E_AQC_ADD_CLOUD_FLAGS_IPV6);
8319                 else
8320                         cld_filter.element.flags |=
8321                                 cpu_to_le16(I40E_AQC_ADD_CLOUD_FLAGS_IPV4);
8322         } else {
8323                 dev_err(&pf->pdev->dev,
8324                         "either mac or ip has to be valid for cloud filter\n");
8325                 return -EINVAL;
8326         }
8327
8328         /* Now copy L4 port in Byte 6..7 in general fields */
8329         cld_filter.general_fields[I40E_AQC_ADD_CLOUD_FV_FLU_0X16_WORD0] =
8330                                                 be16_to_cpu(filter->dst_port);
8331
8332         if (add) {
8333                 /* Validate current device switch mode, change if necessary */
8334                 ret = i40e_validate_and_set_switch_mode(vsi);
8335                 if (ret) {
8336                         dev_err(&pf->pdev->dev,
8337                                 "failed to set switch mode, ret %d\n",
8338                                 ret);
8339                         return ret;
8340                 }
8341
8342                 ret = i40e_aq_add_cloud_filters_bb(&pf->hw, filter->seid,
8343                                                    &cld_filter, 1);
8344         } else {
8345                 ret = i40e_aq_rem_cloud_filters_bb(&pf->hw, filter->seid,
8346                                                    &cld_filter, 1);
8347         }
8348
8349         if (ret)
8350                 dev_dbg(&pf->pdev->dev,
8351                         "Failed to %s cloud filter(big buffer) err %d aq_err %d\n",
8352                         add ? "add" : "delete", ret, pf->hw.aq.asq_last_status);
8353         else
8354                 dev_info(&pf->pdev->dev,
8355                          "%s cloud filter for VSI: %d, L4 port: %d\n",
8356                          add ? "add" : "delete", filter->seid,
8357                          ntohs(filter->dst_port));
8358         return ret;
8359 }
8360
8361 /**
8362  * i40e_parse_cls_flower - Parse tc flower filters provided by kernel
8363  * @vsi: Pointer to VSI
8364  * @f: Pointer to struct flow_cls_offload
8365  * @filter: Pointer to cloud filter structure
8366  *
8367  **/
8368 static int i40e_parse_cls_flower(struct i40e_vsi *vsi,
8369                                  struct flow_cls_offload *f,
8370                                  struct i40e_cloud_filter *filter)
8371 {
8372         struct flow_rule *rule = flow_cls_offload_flow_rule(f);
8373         struct flow_dissector *dissector = rule->match.dissector;
8374         u16 n_proto_mask = 0, n_proto_key = 0, addr_type = 0;
8375         struct i40e_pf *pf = vsi->back;
8376         u8 field_flags = 0;
8377
8378         if (dissector->used_keys &
8379             ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) |
8380               BIT(FLOW_DISSECTOR_KEY_BASIC) |
8381               BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
8382               BIT(FLOW_DISSECTOR_KEY_VLAN) |
8383               BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
8384               BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
8385               BIT(FLOW_DISSECTOR_KEY_PORTS) |
8386               BIT(FLOW_DISSECTOR_KEY_ENC_KEYID))) {
8387                 dev_err(&pf->pdev->dev, "Unsupported key used: 0x%x\n",
8388                         dissector->used_keys);
8389                 return -EOPNOTSUPP;
8390         }
8391
8392         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
8393                 struct flow_match_enc_keyid match;
8394
8395                 flow_rule_match_enc_keyid(rule, &match);
8396                 if (match.mask->keyid != 0)
8397                         field_flags |= I40E_CLOUD_FIELD_TEN_ID;
8398
8399                 filter->tenant_id = be32_to_cpu(match.key->keyid);
8400         }
8401
8402         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) {
8403                 struct flow_match_basic match;
8404
8405                 flow_rule_match_basic(rule, &match);
8406                 n_proto_key = ntohs(match.key->n_proto);
8407                 n_proto_mask = ntohs(match.mask->n_proto);
8408
8409                 if (n_proto_key == ETH_P_ALL) {
8410                         n_proto_key = 0;
8411                         n_proto_mask = 0;
8412                 }
8413                 filter->n_proto = n_proto_key & n_proto_mask;
8414                 filter->ip_proto = match.key->ip_proto;
8415         }
8416
8417         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
8418                 struct flow_match_eth_addrs match;
8419
8420                 flow_rule_match_eth_addrs(rule, &match);
8421
8422                 /* use is_broadcast and is_zero to check for all 0xf or 0 */
8423                 if (!is_zero_ether_addr(match.mask->dst)) {
8424                         if (is_broadcast_ether_addr(match.mask->dst)) {
8425                                 field_flags |= I40E_CLOUD_FIELD_OMAC;
8426                         } else {
8427                                 dev_err(&pf->pdev->dev, "Bad ether dest mask %pM\n",
8428                                         match.mask->dst);
8429                                 return I40E_ERR_CONFIG;
8430                         }
8431                 }
8432
8433                 if (!is_zero_ether_addr(match.mask->src)) {
8434                         if (is_broadcast_ether_addr(match.mask->src)) {
8435                                 field_flags |= I40E_CLOUD_FIELD_IMAC;
8436                         } else {
8437                                 dev_err(&pf->pdev->dev, "Bad ether src mask %pM\n",
8438                                         match.mask->src);
8439                                 return I40E_ERR_CONFIG;
8440                         }
8441                 }
8442                 ether_addr_copy(filter->dst_mac, match.key->dst);
8443                 ether_addr_copy(filter->src_mac, match.key->src);
8444         }
8445
8446         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) {
8447                 struct flow_match_vlan match;
8448
8449                 flow_rule_match_vlan(rule, &match);
8450                 if (match.mask->vlan_id) {
8451                         if (match.mask->vlan_id == VLAN_VID_MASK) {
8452                                 field_flags |= I40E_CLOUD_FIELD_IVLAN;
8453
8454                         } else {
8455                                 dev_err(&pf->pdev->dev, "Bad vlan mask 0x%04x\n",
8456                                         match.mask->vlan_id);
8457                                 return I40E_ERR_CONFIG;
8458                         }
8459                 }
8460
8461                 filter->vlan_id = cpu_to_be16(match.key->vlan_id);
8462         }
8463
8464         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) {
8465                 struct flow_match_control match;
8466
8467                 flow_rule_match_control(rule, &match);
8468                 addr_type = match.key->addr_type;
8469         }
8470
8471         if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
8472                 struct flow_match_ipv4_addrs match;
8473
8474                 flow_rule_match_ipv4_addrs(rule, &match);
8475                 if (match.mask->dst) {
8476                         if (match.mask->dst == cpu_to_be32(0xffffffff)) {
8477                                 field_flags |= I40E_CLOUD_FIELD_IIP;
8478                         } else {
8479                                 dev_err(&pf->pdev->dev, "Bad ip dst mask %pI4b\n",
8480                                         &match.mask->dst);
8481                                 return I40E_ERR_CONFIG;
8482                         }
8483                 }
8484
8485                 if (match.mask->src) {
8486                         if (match.mask->src == cpu_to_be32(0xffffffff)) {
8487                                 field_flags |= I40E_CLOUD_FIELD_IIP;
8488                         } else {
8489                                 dev_err(&pf->pdev->dev, "Bad ip src mask %pI4b\n",
8490                                         &match.mask->src);
8491                                 return I40E_ERR_CONFIG;
8492                         }
8493                 }
8494
8495                 if (field_flags & I40E_CLOUD_FIELD_TEN_ID) {
8496                         dev_err(&pf->pdev->dev, "Tenant id not allowed for ip filter\n");
8497                         return I40E_ERR_CONFIG;
8498                 }
8499                 filter->dst_ipv4 = match.key->dst;
8500                 filter->src_ipv4 = match.key->src;
8501         }
8502
8503         if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
8504                 struct flow_match_ipv6_addrs match;
8505
8506                 flow_rule_match_ipv6_addrs(rule, &match);
8507
8508                 /* src and dest IPV6 address should not be LOOPBACK
8509                  * (0:0:0:0:0:0:0:1), which can be represented as ::1
8510                  */
8511                 if (ipv6_addr_loopback(&match.key->dst) ||
8512                     ipv6_addr_loopback(&match.key->src)) {
8513                         dev_err(&pf->pdev->dev,
8514                                 "Bad ipv6, addr is LOOPBACK\n");
8515                         return I40E_ERR_CONFIG;
8516                 }
8517                 if (!ipv6_addr_any(&match.mask->dst) ||
8518                     !ipv6_addr_any(&match.mask->src))
8519                         field_flags |= I40E_CLOUD_FIELD_IIP;
8520
8521                 memcpy(&filter->src_ipv6, &match.key->src.s6_addr32,
8522                        sizeof(filter->src_ipv6));
8523                 memcpy(&filter->dst_ipv6, &match.key->dst.s6_addr32,
8524                        sizeof(filter->dst_ipv6));
8525         }
8526
8527         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) {
8528                 struct flow_match_ports match;
8529
8530                 flow_rule_match_ports(rule, &match);
8531                 if (match.mask->src) {
8532                         if (match.mask->src == cpu_to_be16(0xffff)) {
8533                                 field_flags |= I40E_CLOUD_FIELD_IIP;
8534                         } else {
8535                                 dev_err(&pf->pdev->dev, "Bad src port mask 0x%04x\n",
8536                                         be16_to_cpu(match.mask->src));
8537                                 return I40E_ERR_CONFIG;
8538                         }
8539                 }
8540
8541                 if (match.mask->dst) {
8542                         if (match.mask->dst == cpu_to_be16(0xffff)) {
8543                                 field_flags |= I40E_CLOUD_FIELD_IIP;
8544                         } else {
8545                                 dev_err(&pf->pdev->dev, "Bad dst port mask 0x%04x\n",
8546                                         be16_to_cpu(match.mask->dst));
8547                                 return I40E_ERR_CONFIG;
8548                         }
8549                 }
8550
8551                 filter->dst_port = match.key->dst;
8552                 filter->src_port = match.key->src;
8553
8554                 switch (filter->ip_proto) {
8555                 case IPPROTO_TCP:
8556                 case IPPROTO_UDP:
8557                         break;
8558                 default:
8559                         dev_err(&pf->pdev->dev,
8560                                 "Only UDP and TCP transport are supported\n");
8561                         return -EINVAL;
8562                 }
8563         }
8564         filter->flags = field_flags;
8565         return 0;
8566 }
8567
8568 /**
8569  * i40e_handle_tclass: Forward to a traffic class on the device
8570  * @vsi: Pointer to VSI
8571  * @tc: traffic class index on the device
8572  * @filter: Pointer to cloud filter structure
8573  *
8574  **/
8575 static int i40e_handle_tclass(struct i40e_vsi *vsi, u32 tc,
8576                               struct i40e_cloud_filter *filter)
8577 {
8578         struct i40e_channel *ch, *ch_tmp;
8579
8580         /* direct to a traffic class on the same device */
8581         if (tc == 0) {
8582                 filter->seid = vsi->seid;
8583                 return 0;
8584         } else if (vsi->tc_config.enabled_tc & BIT(tc)) {
8585                 if (!filter->dst_port) {
8586                         dev_err(&vsi->back->pdev->dev,
8587                                 "Specify destination port to direct to traffic class that is not default\n");
8588                         return -EINVAL;
8589                 }
8590                 if (list_empty(&vsi->ch_list))
8591                         return -EINVAL;
8592                 list_for_each_entry_safe(ch, ch_tmp, &vsi->ch_list,
8593                                          list) {
8594                         if (ch->seid == vsi->tc_seid_map[tc])
8595                                 filter->seid = ch->seid;
8596                 }
8597                 return 0;
8598         }
8599         dev_err(&vsi->back->pdev->dev, "TC is not enabled\n");
8600         return -EINVAL;
8601 }
8602
8603 /**
8604  * i40e_configure_clsflower - Configure tc flower filters
8605  * @vsi: Pointer to VSI
8606  * @cls_flower: Pointer to struct flow_cls_offload
8607  *
8608  **/
8609 static int i40e_configure_clsflower(struct i40e_vsi *vsi,
8610                                     struct flow_cls_offload *cls_flower)
8611 {
8612         int tc = tc_classid_to_hwtc(vsi->netdev, cls_flower->classid);
8613         struct i40e_cloud_filter *filter = NULL;
8614         struct i40e_pf *pf = vsi->back;
8615         int err = 0;
8616
8617         if (tc < 0) {
8618                 dev_err(&vsi->back->pdev->dev, "Invalid traffic class\n");
8619                 return -EOPNOTSUPP;
8620         }
8621
8622         if (!tc) {
8623                 dev_err(&pf->pdev->dev, "Unable to add filter because of invalid destination");
8624                 return -EINVAL;
8625         }
8626
8627         if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
8628             test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
8629                 return -EBUSY;
8630
8631         if (pf->fdir_pf_active_filters ||
8632             (!hlist_empty(&pf->fdir_filter_list))) {
8633                 dev_err(&vsi->back->pdev->dev,
8634                         "Flow Director Sideband filters exists, turn ntuple off to configure cloud filters\n");
8635                 return -EINVAL;
8636         }
8637
8638         if (vsi->back->flags & I40E_FLAG_FD_SB_ENABLED) {
8639                 dev_err(&vsi->back->pdev->dev,
8640                         "Disable Flow Director Sideband, configuring Cloud filters via tc-flower\n");
8641                 vsi->back->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8642                 vsi->back->flags |= I40E_FLAG_FD_SB_TO_CLOUD_FILTER;
8643         }
8644
8645         filter = kzalloc(sizeof(*filter), GFP_KERNEL);
8646         if (!filter)
8647                 return -ENOMEM;
8648
8649         filter->cookie = cls_flower->cookie;
8650
8651         err = i40e_parse_cls_flower(vsi, cls_flower, filter);
8652         if (err < 0)
8653                 goto err;
8654
8655         err = i40e_handle_tclass(vsi, tc, filter);
8656         if (err < 0)
8657                 goto err;
8658
8659         /* Add cloud filter */
8660         if (filter->dst_port)
8661                 err = i40e_add_del_cloud_filter_big_buf(vsi, filter, true);
8662         else
8663                 err = i40e_add_del_cloud_filter(vsi, filter, true);
8664
8665         if (err) {
8666                 dev_err(&pf->pdev->dev, "Failed to add cloud filter, err %d\n",
8667                         err);
8668                 goto err;
8669         }
8670
8671         /* add filter to the ordered list */
8672         INIT_HLIST_NODE(&filter->cloud_node);
8673
8674         hlist_add_head(&filter->cloud_node, &pf->cloud_filter_list);
8675
8676         pf->num_cloud_filters++;
8677
8678         return err;
8679 err:
8680         kfree(filter);
8681         return err;
8682 }
8683
8684 /**
8685  * i40e_find_cloud_filter - Find the could filter in the list
8686  * @vsi: Pointer to VSI
8687  * @cookie: filter specific cookie
8688  *
8689  **/
8690 static struct i40e_cloud_filter *i40e_find_cloud_filter(struct i40e_vsi *vsi,
8691                                                         unsigned long *cookie)
8692 {
8693         struct i40e_cloud_filter *filter = NULL;
8694         struct hlist_node *node2;
8695
8696         hlist_for_each_entry_safe(filter, node2,
8697                                   &vsi->back->cloud_filter_list, cloud_node)
8698                 if (!memcmp(cookie, &filter->cookie, sizeof(filter->cookie)))
8699                         return filter;
8700         return NULL;
8701 }
8702
8703 /**
8704  * i40e_delete_clsflower - Remove tc flower filters
8705  * @vsi: Pointer to VSI
8706  * @cls_flower: Pointer to struct flow_cls_offload
8707  *
8708  **/
8709 static int i40e_delete_clsflower(struct i40e_vsi *vsi,
8710                                  struct flow_cls_offload *cls_flower)
8711 {
8712         struct i40e_cloud_filter *filter = NULL;
8713         struct i40e_pf *pf = vsi->back;
8714         int err = 0;
8715
8716         filter = i40e_find_cloud_filter(vsi, &cls_flower->cookie);
8717
8718         if (!filter)
8719                 return -EINVAL;
8720
8721         hash_del(&filter->cloud_node);
8722
8723         if (filter->dst_port)
8724                 err = i40e_add_del_cloud_filter_big_buf(vsi, filter, false);
8725         else
8726                 err = i40e_add_del_cloud_filter(vsi, filter, false);
8727
8728         kfree(filter);
8729         if (err) {
8730                 dev_err(&pf->pdev->dev,
8731                         "Failed to delete cloud filter, err %s\n",
8732                         i40e_stat_str(&pf->hw, err));
8733                 return i40e_aq_rc_to_posix(err, pf->hw.aq.asq_last_status);
8734         }
8735
8736         pf->num_cloud_filters--;
8737         if (!pf->num_cloud_filters)
8738                 if ((pf->flags & I40E_FLAG_FD_SB_TO_CLOUD_FILTER) &&
8739                     !(pf->flags & I40E_FLAG_FD_SB_INACTIVE)) {
8740                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8741                         pf->flags &= ~I40E_FLAG_FD_SB_TO_CLOUD_FILTER;
8742                         pf->flags &= ~I40E_FLAG_FD_SB_INACTIVE;
8743                 }
8744         return 0;
8745 }
8746
8747 /**
8748  * i40e_setup_tc_cls_flower - flower classifier offloads
8749  * @np: net device to configure
8750  * @cls_flower: offload data
8751  **/
8752 static int i40e_setup_tc_cls_flower(struct i40e_netdev_priv *np,
8753                                     struct flow_cls_offload *cls_flower)
8754 {
8755         struct i40e_vsi *vsi = np->vsi;
8756
8757         switch (cls_flower->command) {
8758         case FLOW_CLS_REPLACE:
8759                 return i40e_configure_clsflower(vsi, cls_flower);
8760         case FLOW_CLS_DESTROY:
8761                 return i40e_delete_clsflower(vsi, cls_flower);
8762         case FLOW_CLS_STATS:
8763                 return -EOPNOTSUPP;
8764         default:
8765                 return -EOPNOTSUPP;
8766         }
8767 }
8768
8769 static int i40e_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
8770                                   void *cb_priv)
8771 {
8772         struct i40e_netdev_priv *np = cb_priv;
8773
8774         if (!tc_cls_can_offload_and_chain0(np->vsi->netdev, type_data))
8775                 return -EOPNOTSUPP;
8776
8777         switch (type) {
8778         case TC_SETUP_CLSFLOWER:
8779                 return i40e_setup_tc_cls_flower(np, type_data);
8780
8781         default:
8782                 return -EOPNOTSUPP;
8783         }
8784 }
8785
8786 static LIST_HEAD(i40e_block_cb_list);
8787
8788 static int __i40e_setup_tc(struct net_device *netdev, enum tc_setup_type type,
8789                            void *type_data)
8790 {
8791         struct i40e_netdev_priv *np = netdev_priv(netdev);
8792
8793         switch (type) {
8794         case TC_SETUP_QDISC_MQPRIO:
8795                 return i40e_setup_tc(netdev, type_data);
8796         case TC_SETUP_BLOCK:
8797                 return flow_block_cb_setup_simple(type_data,
8798                                                   &i40e_block_cb_list,
8799                                                   i40e_setup_tc_block_cb,
8800                                                   np, np, true);
8801         default:
8802                 return -EOPNOTSUPP;
8803         }
8804 }
8805
8806 /**
8807  * i40e_open - Called when a network interface is made active
8808  * @netdev: network interface device structure
8809  *
8810  * The open entry point is called when a network interface is made
8811  * active by the system (IFF_UP).  At this point all resources needed
8812  * for transmit and receive operations are allocated, the interrupt
8813  * handler is registered with the OS, the netdev watchdog subtask is
8814  * enabled, and the stack is notified that the interface is ready.
8815  *
8816  * Returns 0 on success, negative value on failure
8817  **/
8818 int i40e_open(struct net_device *netdev)
8819 {
8820         struct i40e_netdev_priv *np = netdev_priv(netdev);
8821         struct i40e_vsi *vsi = np->vsi;
8822         struct i40e_pf *pf = vsi->back;
8823         int err;
8824
8825         /* disallow open during test or if eeprom is broken */
8826         if (test_bit(__I40E_TESTING, pf->state) ||
8827             test_bit(__I40E_BAD_EEPROM, pf->state))
8828                 return -EBUSY;
8829
8830         netif_carrier_off(netdev);
8831
8832         if (i40e_force_link_state(pf, true))
8833                 return -EAGAIN;
8834
8835         err = i40e_vsi_open(vsi);
8836         if (err)
8837                 return err;
8838
8839         /* configure global TSO hardware offload settings */
8840         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
8841                                                        TCP_FLAG_FIN) >> 16);
8842         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
8843                                                        TCP_FLAG_FIN |
8844                                                        TCP_FLAG_CWR) >> 16);
8845         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
8846         udp_tunnel_get_rx_info(netdev);
8847
8848         return 0;
8849 }
8850
8851 /**
8852  * i40e_netif_set_realnum_tx_rx_queues - Update number of tx/rx queues
8853  * @vsi: vsi structure
8854  *
8855  * This updates netdev's number of tx/rx queues
8856  *
8857  * Returns status of setting tx/rx queues
8858  **/
8859 static int i40e_netif_set_realnum_tx_rx_queues(struct i40e_vsi *vsi)
8860 {
8861         int ret;
8862
8863         ret = netif_set_real_num_rx_queues(vsi->netdev,
8864                                            vsi->num_queue_pairs);
8865         if (ret)
8866                 return ret;
8867
8868         return netif_set_real_num_tx_queues(vsi->netdev,
8869                                             vsi->num_queue_pairs);
8870 }
8871
8872 /**
8873  * i40e_vsi_open -
8874  * @vsi: the VSI to open
8875  *
8876  * Finish initialization of the VSI.
8877  *
8878  * Returns 0 on success, negative value on failure
8879  *
8880  * Note: expects to be called while under rtnl_lock()
8881  **/
8882 int i40e_vsi_open(struct i40e_vsi *vsi)
8883 {
8884         struct i40e_pf *pf = vsi->back;
8885         char int_name[I40E_INT_NAME_STR_LEN];
8886         int err;
8887
8888         /* allocate descriptors */
8889         err = i40e_vsi_setup_tx_resources(vsi);
8890         if (err)
8891                 goto err_setup_tx;
8892         err = i40e_vsi_setup_rx_resources(vsi);
8893         if (err)
8894                 goto err_setup_rx;
8895
8896         err = i40e_vsi_configure(vsi);
8897         if (err)
8898                 goto err_setup_rx;
8899
8900         if (vsi->netdev) {
8901                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
8902                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
8903                 err = i40e_vsi_request_irq(vsi, int_name);
8904                 if (err)
8905                         goto err_setup_rx;
8906
8907                 /* Notify the stack of the actual queue counts. */
8908                 err = i40e_netif_set_realnum_tx_rx_queues(vsi);
8909                 if (err)
8910                         goto err_set_queues;
8911
8912         } else if (vsi->type == I40E_VSI_FDIR) {
8913                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
8914                          dev_driver_string(&pf->pdev->dev),
8915                          dev_name(&pf->pdev->dev));
8916                 err = i40e_vsi_request_irq(vsi, int_name);
8917                 if (err)
8918                         goto err_setup_rx;
8919
8920         } else {
8921                 err = -EINVAL;
8922                 goto err_setup_rx;
8923         }
8924
8925         err = i40e_up_complete(vsi);
8926         if (err)
8927                 goto err_up_complete;
8928
8929         return 0;
8930
8931 err_up_complete:
8932         i40e_down(vsi);
8933 err_set_queues:
8934         i40e_vsi_free_irq(vsi);
8935 err_setup_rx:
8936         i40e_vsi_free_rx_resources(vsi);
8937 err_setup_tx:
8938         i40e_vsi_free_tx_resources(vsi);
8939         if (vsi == pf->vsi[pf->lan_vsi])
8940                 i40e_do_reset(pf, I40E_PF_RESET_FLAG, true);
8941
8942         return err;
8943 }
8944
8945 /**
8946  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
8947  * @pf: Pointer to PF
8948  *
8949  * This function destroys the hlist where all the Flow Director
8950  * filters were saved.
8951  **/
8952 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
8953 {
8954         struct i40e_fdir_filter *filter;
8955         struct i40e_flex_pit *pit_entry, *tmp;
8956         struct hlist_node *node2;
8957
8958         hlist_for_each_entry_safe(filter, node2,
8959                                   &pf->fdir_filter_list, fdir_node) {
8960                 hlist_del(&filter->fdir_node);
8961                 kfree(filter);
8962         }
8963
8964         list_for_each_entry_safe(pit_entry, tmp, &pf->l3_flex_pit_list, list) {
8965                 list_del(&pit_entry->list);
8966                 kfree(pit_entry);
8967         }
8968         INIT_LIST_HEAD(&pf->l3_flex_pit_list);
8969
8970         list_for_each_entry_safe(pit_entry, tmp, &pf->l4_flex_pit_list, list) {
8971                 list_del(&pit_entry->list);
8972                 kfree(pit_entry);
8973         }
8974         INIT_LIST_HEAD(&pf->l4_flex_pit_list);
8975
8976         pf->fdir_pf_active_filters = 0;
8977         i40e_reset_fdir_filter_cnt(pf);
8978
8979         /* Reprogram the default input set for TCP/IPv4 */
8980         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_TCP,
8981                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK |
8982                                 I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
8983
8984         /* Reprogram the default input set for TCP/IPv6 */
8985         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV6_TCP,
8986                                 I40E_L3_V6_SRC_MASK | I40E_L3_V6_DST_MASK |
8987                                 I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
8988
8989         /* Reprogram the default input set for UDP/IPv4 */
8990         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_UDP,
8991                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK |
8992                                 I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
8993
8994         /* Reprogram the default input set for UDP/IPv6 */
8995         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV6_UDP,
8996                                 I40E_L3_V6_SRC_MASK | I40E_L3_V6_DST_MASK |
8997                                 I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
8998
8999         /* Reprogram the default input set for SCTP/IPv4 */
9000         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_SCTP,
9001                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK |
9002                                 I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
9003
9004         /* Reprogram the default input set for SCTP/IPv6 */
9005         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV6_SCTP,
9006                                 I40E_L3_V6_SRC_MASK | I40E_L3_V6_DST_MASK |
9007                                 I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
9008
9009         /* Reprogram the default input set for Other/IPv4 */
9010         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_OTHER,
9011                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK);
9012
9013         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_FRAG_IPV4,
9014                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK);
9015
9016         /* Reprogram the default input set for Other/IPv6 */
9017         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV6_OTHER,
9018                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK);
9019
9020         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_FRAG_IPV6,
9021                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK);
9022 }
9023
9024 /**
9025  * i40e_cloud_filter_exit - Cleans up the cloud filters
9026  * @pf: Pointer to PF
9027  *
9028  * This function destroys the hlist where all the cloud filters
9029  * were saved.
9030  **/
9031 static void i40e_cloud_filter_exit(struct i40e_pf *pf)
9032 {
9033         struct i40e_cloud_filter *cfilter;
9034         struct hlist_node *node;
9035
9036         hlist_for_each_entry_safe(cfilter, node,
9037                                   &pf->cloud_filter_list, cloud_node) {
9038                 hlist_del(&cfilter->cloud_node);
9039                 kfree(cfilter);
9040         }
9041         pf->num_cloud_filters = 0;
9042
9043         if ((pf->flags & I40E_FLAG_FD_SB_TO_CLOUD_FILTER) &&
9044             !(pf->flags & I40E_FLAG_FD_SB_INACTIVE)) {
9045                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
9046                 pf->flags &= ~I40E_FLAG_FD_SB_TO_CLOUD_FILTER;
9047                 pf->flags &= ~I40E_FLAG_FD_SB_INACTIVE;
9048         }
9049 }
9050
9051 /**
9052  * i40e_close - Disables a network interface
9053  * @netdev: network interface device structure
9054  *
9055  * The close entry point is called when an interface is de-activated
9056  * by the OS.  The hardware is still under the driver's control, but
9057  * this netdev interface is disabled.
9058  *
9059  * Returns 0, this is not allowed to fail
9060  **/
9061 int i40e_close(struct net_device *netdev)
9062 {
9063         struct i40e_netdev_priv *np = netdev_priv(netdev);
9064         struct i40e_vsi *vsi = np->vsi;
9065
9066         i40e_vsi_close(vsi);
9067
9068         return 0;
9069 }
9070
9071 /**
9072  * i40e_do_reset - Start a PF or Core Reset sequence
9073  * @pf: board private structure
9074  * @reset_flags: which reset is requested
9075  * @lock_acquired: indicates whether or not the lock has been acquired
9076  * before this function was called.
9077  *
9078  * The essential difference in resets is that the PF Reset
9079  * doesn't clear the packet buffers, doesn't reset the PE
9080  * firmware, and doesn't bother the other PFs on the chip.
9081  **/
9082 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags, bool lock_acquired)
9083 {
9084         u32 val;
9085
9086         /* do the biggest reset indicated */
9087         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
9088
9089                 /* Request a Global Reset
9090                  *
9091                  * This will start the chip's countdown to the actual full
9092                  * chip reset event, and a warning interrupt to be sent
9093                  * to all PFs, including the requestor.  Our handler
9094                  * for the warning interrupt will deal with the shutdown
9095                  * and recovery of the switch setup.
9096                  */
9097                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
9098                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
9099                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
9100                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
9101
9102         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
9103
9104                 /* Request a Core Reset
9105                  *
9106                  * Same as Global Reset, except does *not* include the MAC/PHY
9107                  */
9108                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
9109                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
9110                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
9111                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
9112                 i40e_flush(&pf->hw);
9113
9114         } else if (reset_flags & I40E_PF_RESET_FLAG) {
9115
9116                 /* Request a PF Reset
9117                  *
9118                  * Resets only the PF-specific registers
9119                  *
9120                  * This goes directly to the tear-down and rebuild of
9121                  * the switch, since we need to do all the recovery as
9122                  * for the Core Reset.
9123                  */
9124                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
9125                 i40e_handle_reset_warning(pf, lock_acquired);
9126
9127         } else if (reset_flags & I40E_PF_RESET_AND_REBUILD_FLAG) {
9128                 /* Request a PF Reset
9129                  *
9130                  * Resets PF and reinitializes PFs VSI.
9131                  */
9132                 i40e_prep_for_reset(pf);
9133                 i40e_reset_and_rebuild(pf, true, lock_acquired);
9134                 dev_info(&pf->pdev->dev,
9135                          pf->flags & I40E_FLAG_DISABLE_FW_LLDP ?
9136                          "FW LLDP is disabled\n" :
9137                          "FW LLDP is enabled\n");
9138
9139         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
9140                 int v;
9141
9142                 /* Find the VSI(s) that requested a re-init */
9143                 dev_info(&pf->pdev->dev,
9144                          "VSI reinit requested\n");
9145                 for (v = 0; v < pf->num_alloc_vsi; v++) {
9146                         struct i40e_vsi *vsi = pf->vsi[v];
9147
9148                         if (vsi != NULL &&
9149                             test_and_clear_bit(__I40E_VSI_REINIT_REQUESTED,
9150                                                vsi->state))
9151                                 i40e_vsi_reinit_locked(pf->vsi[v]);
9152                 }
9153         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
9154                 int v;
9155
9156                 /* Find the VSI(s) that needs to be brought down */
9157                 dev_info(&pf->pdev->dev, "VSI down requested\n");
9158                 for (v = 0; v < pf->num_alloc_vsi; v++) {
9159                         struct i40e_vsi *vsi = pf->vsi[v];
9160
9161                         if (vsi != NULL &&
9162                             test_and_clear_bit(__I40E_VSI_DOWN_REQUESTED,
9163                                                vsi->state)) {
9164                                 set_bit(__I40E_VSI_DOWN, vsi->state);
9165                                 i40e_down(vsi);
9166                         }
9167                 }
9168         } else {
9169                 dev_info(&pf->pdev->dev,
9170                          "bad reset request 0x%08x\n", reset_flags);
9171         }
9172 }
9173
9174 #ifdef CONFIG_I40E_DCB
9175 /**
9176  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
9177  * @pf: board private structure
9178  * @old_cfg: current DCB config
9179  * @new_cfg: new DCB config
9180  **/
9181 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
9182                             struct i40e_dcbx_config *old_cfg,
9183                             struct i40e_dcbx_config *new_cfg)
9184 {
9185         bool need_reconfig = false;
9186
9187         /* Check if ETS configuration has changed */
9188         if (memcmp(&new_cfg->etscfg,
9189                    &old_cfg->etscfg,
9190                    sizeof(new_cfg->etscfg))) {
9191                 /* If Priority Table has changed reconfig is needed */
9192                 if (memcmp(&new_cfg->etscfg.prioritytable,
9193                            &old_cfg->etscfg.prioritytable,
9194                            sizeof(new_cfg->etscfg.prioritytable))) {
9195                         need_reconfig = true;
9196                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
9197                 }
9198
9199                 if (memcmp(&new_cfg->etscfg.tcbwtable,
9200                            &old_cfg->etscfg.tcbwtable,
9201                            sizeof(new_cfg->etscfg.tcbwtable)))
9202                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
9203
9204                 if (memcmp(&new_cfg->etscfg.tsatable,
9205                            &old_cfg->etscfg.tsatable,
9206                            sizeof(new_cfg->etscfg.tsatable)))
9207                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
9208         }
9209
9210         /* Check if PFC configuration has changed */
9211         if (memcmp(&new_cfg->pfc,
9212                    &old_cfg->pfc,
9213                    sizeof(new_cfg->pfc))) {
9214                 need_reconfig = true;
9215                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
9216         }
9217
9218         /* Check if APP Table has changed */
9219         if (memcmp(&new_cfg->app,
9220                    &old_cfg->app,
9221                    sizeof(new_cfg->app))) {
9222                 need_reconfig = true;
9223                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
9224         }
9225
9226         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
9227         return need_reconfig;
9228 }
9229
9230 /**
9231  * i40e_handle_lldp_event - Handle LLDP Change MIB event
9232  * @pf: board private structure
9233  * @e: event info posted on ARQ
9234  **/
9235 static int i40e_handle_lldp_event(struct i40e_pf *pf,
9236                                   struct i40e_arq_event_info *e)
9237 {
9238         struct i40e_aqc_lldp_get_mib *mib =
9239                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
9240         struct i40e_hw *hw = &pf->hw;
9241         struct i40e_dcbx_config tmp_dcbx_cfg;
9242         bool need_reconfig = false;
9243         int ret = 0;
9244         u8 type;
9245
9246         /* X710-T*L 2.5G and 5G speeds don't support DCB */
9247         if (I40E_IS_X710TL_DEVICE(hw->device_id) &&
9248             (hw->phy.link_info.link_speed &
9249              ~(I40E_LINK_SPEED_2_5GB | I40E_LINK_SPEED_5GB)) &&
9250              !(pf->flags & I40E_FLAG_DCB_CAPABLE))
9251                 /* let firmware decide if the DCB should be disabled */
9252                 pf->flags |= I40E_FLAG_DCB_CAPABLE;
9253
9254         /* Not DCB capable or capability disabled */
9255         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
9256                 return ret;
9257
9258         /* Ignore if event is not for Nearest Bridge */
9259         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
9260                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
9261         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
9262         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
9263                 return ret;
9264
9265         /* Check MIB Type and return if event for Remote MIB update */
9266         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
9267         dev_dbg(&pf->pdev->dev,
9268                 "LLDP event mib type %s\n", type ? "remote" : "local");
9269         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
9270                 /* Update the remote cached instance and return */
9271                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
9272                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
9273                                 &hw->remote_dcbx_config);
9274                 goto exit;
9275         }
9276
9277         /* Store the old configuration */
9278         tmp_dcbx_cfg = hw->local_dcbx_config;
9279
9280         /* Reset the old DCBx configuration data */
9281         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
9282         /* Get updated DCBX data from firmware */
9283         ret = i40e_get_dcb_config(&pf->hw);
9284         if (ret) {
9285                 /* X710-T*L 2.5G and 5G speeds don't support DCB */
9286                 if (I40E_IS_X710TL_DEVICE(hw->device_id) &&
9287                     (hw->phy.link_info.link_speed &
9288                      (I40E_LINK_SPEED_2_5GB | I40E_LINK_SPEED_5GB))) {
9289                         dev_warn(&pf->pdev->dev,
9290                                  "DCB is not supported for X710-T*L 2.5/5G speeds\n");
9291                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9292                 } else {
9293                         dev_info(&pf->pdev->dev,
9294                                  "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
9295                                  i40e_stat_str(&pf->hw, ret),
9296                                  i40e_aq_str(&pf->hw,
9297                                              pf->hw.aq.asq_last_status));
9298                 }
9299                 goto exit;
9300         }
9301
9302         /* No change detected in DCBX configs */
9303         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
9304                     sizeof(tmp_dcbx_cfg))) {
9305                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
9306                 goto exit;
9307         }
9308
9309         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
9310                                                &hw->local_dcbx_config);
9311
9312         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
9313
9314         if (!need_reconfig)
9315                 goto exit;
9316
9317         /* Enable DCB tagging only when more than one TC */
9318         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
9319                 pf->flags |= I40E_FLAG_DCB_ENABLED;
9320         else
9321                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
9322
9323         set_bit(__I40E_PORT_SUSPENDED, pf->state);
9324         /* Reconfiguration needed quiesce all VSIs */
9325         i40e_pf_quiesce_all_vsi(pf);
9326
9327         /* Changes in configuration update VEB/VSI */
9328         i40e_dcb_reconfigure(pf);
9329
9330         ret = i40e_resume_port_tx(pf);
9331
9332         clear_bit(__I40E_PORT_SUSPENDED, pf->state);
9333         /* In case of error no point in resuming VSIs */
9334         if (ret)
9335                 goto exit;
9336
9337         /* Wait for the PF's queues to be disabled */
9338         ret = i40e_pf_wait_queues_disabled(pf);
9339         if (ret) {
9340                 /* Schedule PF reset to recover */
9341                 set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
9342                 i40e_service_event_schedule(pf);
9343         } else {
9344                 i40e_pf_unquiesce_all_vsi(pf);
9345                 set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
9346                 set_bit(__I40E_CLIENT_L2_CHANGE, pf->state);
9347         }
9348
9349 exit:
9350         return ret;
9351 }
9352 #endif /* CONFIG_I40E_DCB */
9353
9354 /**
9355  * i40e_do_reset_safe - Protected reset path for userland calls.
9356  * @pf: board private structure
9357  * @reset_flags: which reset is requested
9358  *
9359  **/
9360 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
9361 {
9362         rtnl_lock();
9363         i40e_do_reset(pf, reset_flags, true);
9364         rtnl_unlock();
9365 }
9366
9367 /**
9368  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
9369  * @pf: board private structure
9370  * @e: event info posted on ARQ
9371  *
9372  * Handler for LAN Queue Overflow Event generated by the firmware for PF
9373  * and VF queues
9374  **/
9375 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
9376                                            struct i40e_arq_event_info *e)
9377 {
9378         struct i40e_aqc_lan_overflow *data =
9379                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
9380         u32 queue = le32_to_cpu(data->prtdcb_rupto);
9381         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
9382         struct i40e_hw *hw = &pf->hw;
9383         struct i40e_vf *vf;
9384         u16 vf_id;
9385
9386         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
9387                 queue, qtx_ctl);
9388
9389         /* Queue belongs to VF, find the VF and issue VF reset */
9390         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
9391             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
9392                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
9393                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
9394                 vf_id -= hw->func_caps.vf_base_id;
9395                 vf = &pf->vf[vf_id];
9396                 i40e_vc_notify_vf_reset(vf);
9397                 /* Allow VF to process pending reset notification */
9398                 msleep(20);
9399                 i40e_reset_vf(vf, false);
9400         }
9401 }
9402
9403 /**
9404  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
9405  * @pf: board private structure
9406  **/
9407 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
9408 {
9409         u32 val, fcnt_prog;
9410
9411         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
9412         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
9413         return fcnt_prog;
9414 }
9415
9416 /**
9417  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
9418  * @pf: board private structure
9419  **/
9420 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
9421 {
9422         u32 val, fcnt_prog;
9423
9424         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
9425         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
9426                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
9427                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
9428         return fcnt_prog;
9429 }
9430
9431 /**
9432  * i40e_get_global_fd_count - Get total FD filters programmed on device
9433  * @pf: board private structure
9434  **/
9435 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
9436 {
9437         u32 val, fcnt_prog;
9438
9439         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
9440         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
9441                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
9442                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
9443         return fcnt_prog;
9444 }
9445
9446 /**
9447  * i40e_reenable_fdir_sb - Restore FDir SB capability
9448  * @pf: board private structure
9449  **/
9450 static void i40e_reenable_fdir_sb(struct i40e_pf *pf)
9451 {
9452         if (test_and_clear_bit(__I40E_FD_SB_AUTO_DISABLED, pf->state))
9453                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
9454                     (I40E_DEBUG_FD & pf->hw.debug_mask))
9455                         dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
9456 }
9457
9458 /**
9459  * i40e_reenable_fdir_atr - Restore FDir ATR capability
9460  * @pf: board private structure
9461  **/
9462 static void i40e_reenable_fdir_atr(struct i40e_pf *pf)
9463 {
9464         if (test_and_clear_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state)) {
9465                 /* ATR uses the same filtering logic as SB rules. It only
9466                  * functions properly if the input set mask is at the default
9467                  * settings. It is safe to restore the default input set
9468                  * because there are no active TCPv4 filter rules.
9469                  */
9470                 i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_TCP,
9471                                         I40E_L3_SRC_MASK | I40E_L3_DST_MASK |
9472                                         I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
9473
9474                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
9475                     (I40E_DEBUG_FD & pf->hw.debug_mask))
9476                         dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table and there are no conflicting ntuple rules\n");
9477         }
9478 }
9479
9480 /**
9481  * i40e_delete_invalid_filter - Delete an invalid FDIR filter
9482  * @pf: board private structure
9483  * @filter: FDir filter to remove
9484  */
9485 static void i40e_delete_invalid_filter(struct i40e_pf *pf,
9486                                        struct i40e_fdir_filter *filter)
9487 {
9488         /* Update counters */
9489         pf->fdir_pf_active_filters--;
9490         pf->fd_inv = 0;
9491
9492         switch (filter->flow_type) {
9493         case TCP_V4_FLOW:
9494                 pf->fd_tcp4_filter_cnt--;
9495                 break;
9496         case UDP_V4_FLOW:
9497                 pf->fd_udp4_filter_cnt--;
9498                 break;
9499         case SCTP_V4_FLOW:
9500                 pf->fd_sctp4_filter_cnt--;
9501                 break;
9502         case TCP_V6_FLOW:
9503                 pf->fd_tcp6_filter_cnt--;
9504                 break;
9505         case UDP_V6_FLOW:
9506                 pf->fd_udp6_filter_cnt--;
9507                 break;
9508         case SCTP_V6_FLOW:
9509                 pf->fd_udp6_filter_cnt--;
9510                 break;
9511         case IP_USER_FLOW:
9512                 switch (filter->ipl4_proto) {
9513                 case IPPROTO_TCP:
9514                         pf->fd_tcp4_filter_cnt--;
9515                         break;
9516                 case IPPROTO_UDP:
9517                         pf->fd_udp4_filter_cnt--;
9518                         break;
9519                 case IPPROTO_SCTP:
9520                         pf->fd_sctp4_filter_cnt--;
9521                         break;
9522                 case IPPROTO_IP:
9523                         pf->fd_ip4_filter_cnt--;
9524                         break;
9525                 }
9526                 break;
9527         case IPV6_USER_FLOW:
9528                 switch (filter->ipl4_proto) {
9529                 case IPPROTO_TCP:
9530                         pf->fd_tcp6_filter_cnt--;
9531                         break;
9532                 case IPPROTO_UDP:
9533                         pf->fd_udp6_filter_cnt--;
9534                         break;
9535                 case IPPROTO_SCTP:
9536                         pf->fd_sctp6_filter_cnt--;
9537                         break;
9538                 case IPPROTO_IP:
9539                         pf->fd_ip6_filter_cnt--;
9540                         break;
9541                 }
9542                 break;
9543         }
9544
9545         /* Remove the filter from the list and free memory */
9546         hlist_del(&filter->fdir_node);
9547         kfree(filter);
9548 }
9549
9550 /**
9551  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
9552  * @pf: board private structure
9553  **/
9554 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
9555 {
9556         struct i40e_fdir_filter *filter;
9557         u32 fcnt_prog, fcnt_avail;
9558         struct hlist_node *node;
9559
9560         if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state))
9561                 return;
9562
9563         /* Check if we have enough room to re-enable FDir SB capability. */
9564         fcnt_prog = i40e_get_global_fd_count(pf);
9565         fcnt_avail = pf->fdir_pf_filter_count;
9566         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
9567             (pf->fd_add_err == 0) ||
9568             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt))
9569                 i40e_reenable_fdir_sb(pf);
9570
9571         /* We should wait for even more space before re-enabling ATR.
9572          * Additionally, we cannot enable ATR as long as we still have TCP SB
9573          * rules active.
9574          */
9575         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) &&
9576             pf->fd_tcp4_filter_cnt == 0 && pf->fd_tcp6_filter_cnt == 0)
9577                 i40e_reenable_fdir_atr(pf);
9578
9579         /* if hw had a problem adding a filter, delete it */
9580         if (pf->fd_inv > 0) {
9581                 hlist_for_each_entry_safe(filter, node,
9582                                           &pf->fdir_filter_list, fdir_node)
9583                         if (filter->fd_id == pf->fd_inv)
9584                                 i40e_delete_invalid_filter(pf, filter);
9585         }
9586 }
9587
9588 #define I40E_MIN_FD_FLUSH_INTERVAL 10
9589 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
9590 /**
9591  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
9592  * @pf: board private structure
9593  **/
9594 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
9595 {
9596         unsigned long min_flush_time;
9597         int flush_wait_retry = 50;
9598         bool disable_atr = false;
9599         int fd_room;
9600         int reg;
9601
9602         if (!time_after(jiffies, pf->fd_flush_timestamp +
9603                                  (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
9604                 return;
9605
9606         /* If the flush is happening too quick and we have mostly SB rules we
9607          * should not re-enable ATR for some time.
9608          */
9609         min_flush_time = pf->fd_flush_timestamp +
9610                          (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
9611         fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
9612
9613         if (!(time_after(jiffies, min_flush_time)) &&
9614             (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
9615                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
9616                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
9617                 disable_atr = true;
9618         }
9619
9620         pf->fd_flush_timestamp = jiffies;
9621         set_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state);
9622         /* flush all filters */
9623         wr32(&pf->hw, I40E_PFQF_CTL_1,
9624              I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
9625         i40e_flush(&pf->hw);
9626         pf->fd_flush_cnt++;
9627         pf->fd_add_err = 0;
9628         do {
9629                 /* Check FD flush status every 5-6msec */
9630                 usleep_range(5000, 6000);
9631                 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
9632                 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
9633                         break;
9634         } while (flush_wait_retry--);
9635         if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
9636                 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
9637         } else {
9638                 /* replay sideband filters */
9639                 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
9640                 if (!disable_atr && !pf->fd_tcp4_filter_cnt)
9641                         clear_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state);
9642                 clear_bit(__I40E_FD_FLUSH_REQUESTED, pf->state);
9643                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
9644                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
9645         }
9646 }
9647
9648 /**
9649  * i40e_get_current_atr_cnt - Get the count of total FD ATR filters programmed
9650  * @pf: board private structure
9651  **/
9652 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
9653 {
9654         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
9655 }
9656
9657 /**
9658  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
9659  * @pf: board private structure
9660  **/
9661 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
9662 {
9663
9664         /* if interface is down do nothing */
9665         if (test_bit(__I40E_DOWN, pf->state))
9666                 return;
9667
9668         if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state))
9669                 i40e_fdir_flush_and_replay(pf);
9670
9671         i40e_fdir_check_and_reenable(pf);
9672
9673 }
9674
9675 /**
9676  * i40e_vsi_link_event - notify VSI of a link event
9677  * @vsi: vsi to be notified
9678  * @link_up: link up or down
9679  **/
9680 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
9681 {
9682         if (!vsi || test_bit(__I40E_VSI_DOWN, vsi->state))
9683                 return;
9684
9685         switch (vsi->type) {
9686         case I40E_VSI_MAIN:
9687                 if (!vsi->netdev || !vsi->netdev_registered)
9688                         break;
9689
9690                 if (link_up) {
9691                         netif_carrier_on(vsi->netdev);
9692                         netif_tx_wake_all_queues(vsi->netdev);
9693                 } else {
9694                         netif_carrier_off(vsi->netdev);
9695                         netif_tx_stop_all_queues(vsi->netdev);
9696                 }
9697                 break;
9698
9699         case I40E_VSI_SRIOV:
9700         case I40E_VSI_VMDQ2:
9701         case I40E_VSI_CTRL:
9702         case I40E_VSI_IWARP:
9703         case I40E_VSI_MIRROR:
9704         default:
9705                 /* there is no notification for other VSIs */
9706                 break;
9707         }
9708 }
9709
9710 /**
9711  * i40e_veb_link_event - notify elements on the veb of a link event
9712  * @veb: veb to be notified
9713  * @link_up: link up or down
9714  **/
9715 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
9716 {
9717         struct i40e_pf *pf;
9718         int i;
9719
9720         if (!veb || !veb->pf)
9721                 return;
9722         pf = veb->pf;
9723
9724         /* depth first... */
9725         for (i = 0; i < I40E_MAX_VEB; i++)
9726                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
9727                         i40e_veb_link_event(pf->veb[i], link_up);
9728
9729         /* ... now the local VSIs */
9730         for (i = 0; i < pf->num_alloc_vsi; i++)
9731                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
9732                         i40e_vsi_link_event(pf->vsi[i], link_up);
9733 }
9734
9735 /**
9736  * i40e_link_event - Update netif_carrier status
9737  * @pf: board private structure
9738  **/
9739 static void i40e_link_event(struct i40e_pf *pf)
9740 {
9741         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
9742         u8 new_link_speed, old_link_speed;
9743         i40e_status status;
9744         bool new_link, old_link;
9745 #ifdef CONFIG_I40E_DCB
9746         int err;
9747 #endif /* CONFIG_I40E_DCB */
9748
9749         /* set this to force the get_link_status call to refresh state */
9750         pf->hw.phy.get_link_info = true;
9751         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
9752         status = i40e_get_link_status(&pf->hw, &new_link);
9753
9754         /* On success, disable temp link polling */
9755         if (status == I40E_SUCCESS) {
9756                 clear_bit(__I40E_TEMP_LINK_POLLING, pf->state);
9757         } else {
9758                 /* Enable link polling temporarily until i40e_get_link_status
9759                  * returns I40E_SUCCESS
9760                  */
9761                 set_bit(__I40E_TEMP_LINK_POLLING, pf->state);
9762                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
9763                         status);
9764                 return;
9765         }
9766
9767         old_link_speed = pf->hw.phy.link_info_old.link_speed;
9768         new_link_speed = pf->hw.phy.link_info.link_speed;
9769
9770         if (new_link == old_link &&
9771             new_link_speed == old_link_speed &&
9772             (test_bit(__I40E_VSI_DOWN, vsi->state) ||
9773              new_link == netif_carrier_ok(vsi->netdev)))
9774                 return;
9775
9776         i40e_print_link_message(vsi, new_link);
9777
9778         /* Notify the base of the switch tree connected to
9779          * the link.  Floating VEBs are not notified.
9780          */
9781         if (pf->lan_veb < I40E_MAX_VEB && pf->veb[pf->lan_veb])
9782                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
9783         else
9784                 i40e_vsi_link_event(vsi, new_link);
9785
9786         if (pf->vf)
9787                 i40e_vc_notify_link_state(pf);
9788
9789         if (pf->flags & I40E_FLAG_PTP)
9790                 i40e_ptp_set_increment(pf);
9791 #ifdef CONFIG_I40E_DCB
9792         if (new_link == old_link)
9793                 return;
9794         /* Not SW DCB so firmware will take care of default settings */
9795         if (pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED)
9796                 return;
9797
9798         /* We cover here only link down, as after link up in case of SW DCB
9799          * SW LLDP agent will take care of setting it up
9800          */
9801         if (!new_link) {
9802                 dev_dbg(&pf->pdev->dev, "Reconfig DCB to single TC as result of Link Down\n");
9803                 memset(&pf->tmp_cfg, 0, sizeof(pf->tmp_cfg));
9804                 err = i40e_dcb_sw_default_config(pf);
9805                 if (err) {
9806                         pf->flags &= ~(I40E_FLAG_DCB_CAPABLE |
9807                                        I40E_FLAG_DCB_ENABLED);
9808                 } else {
9809                         pf->dcbx_cap = DCB_CAP_DCBX_HOST |
9810                                        DCB_CAP_DCBX_VER_IEEE;
9811                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
9812                         pf->flags &= ~I40E_FLAG_DCB_ENABLED;
9813                 }
9814         }
9815 #endif /* CONFIG_I40E_DCB */
9816 }
9817
9818 /**
9819  * i40e_watchdog_subtask - periodic checks not using event driven response
9820  * @pf: board private structure
9821  **/
9822 static void i40e_watchdog_subtask(struct i40e_pf *pf)
9823 {
9824         int i;
9825
9826         /* if interface is down do nothing */
9827         if (test_bit(__I40E_DOWN, pf->state) ||
9828             test_bit(__I40E_CONFIG_BUSY, pf->state))
9829                 return;
9830
9831         /* make sure we don't do these things too often */
9832         if (time_before(jiffies, (pf->service_timer_previous +
9833                                   pf->service_timer_period)))
9834                 return;
9835         pf->service_timer_previous = jiffies;
9836
9837         if ((pf->flags & I40E_FLAG_LINK_POLLING_ENABLED) ||
9838             test_bit(__I40E_TEMP_LINK_POLLING, pf->state))
9839                 i40e_link_event(pf);
9840
9841         /* Update the stats for active netdevs so the network stack
9842          * can look at updated numbers whenever it cares to
9843          */
9844         for (i = 0; i < pf->num_alloc_vsi; i++)
9845                 if (pf->vsi[i] && pf->vsi[i]->netdev)
9846                         i40e_update_stats(pf->vsi[i]);
9847
9848         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
9849                 /* Update the stats for the active switching components */
9850                 for (i = 0; i < I40E_MAX_VEB; i++)
9851                         if (pf->veb[i])
9852                                 i40e_update_veb_stats(pf->veb[i]);
9853         }
9854
9855         i40e_ptp_rx_hang(pf);
9856         i40e_ptp_tx_hang(pf);
9857 }
9858
9859 /**
9860  * i40e_reset_subtask - Set up for resetting the device and driver
9861  * @pf: board private structure
9862  **/
9863 static void i40e_reset_subtask(struct i40e_pf *pf)
9864 {
9865         u32 reset_flags = 0;
9866
9867         if (test_bit(__I40E_REINIT_REQUESTED, pf->state)) {
9868                 reset_flags |= BIT(__I40E_REINIT_REQUESTED);
9869                 clear_bit(__I40E_REINIT_REQUESTED, pf->state);
9870         }
9871         if (test_bit(__I40E_PF_RESET_REQUESTED, pf->state)) {
9872                 reset_flags |= BIT(__I40E_PF_RESET_REQUESTED);
9873                 clear_bit(__I40E_PF_RESET_REQUESTED, pf->state);
9874         }
9875         if (test_bit(__I40E_CORE_RESET_REQUESTED, pf->state)) {
9876                 reset_flags |= BIT(__I40E_CORE_RESET_REQUESTED);
9877                 clear_bit(__I40E_CORE_RESET_REQUESTED, pf->state);
9878         }
9879         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, pf->state)) {
9880                 reset_flags |= BIT(__I40E_GLOBAL_RESET_REQUESTED);
9881                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, pf->state);
9882         }
9883         if (test_bit(__I40E_DOWN_REQUESTED, pf->state)) {
9884                 reset_flags |= BIT(__I40E_DOWN_REQUESTED);
9885                 clear_bit(__I40E_DOWN_REQUESTED, pf->state);
9886         }
9887
9888         /* If there's a recovery already waiting, it takes
9889          * precedence before starting a new reset sequence.
9890          */
9891         if (test_bit(__I40E_RESET_INTR_RECEIVED, pf->state)) {
9892                 i40e_prep_for_reset(pf);
9893                 i40e_reset(pf);
9894                 i40e_rebuild(pf, false, false);
9895         }
9896
9897         /* If we're already down or resetting, just bail */
9898         if (reset_flags &&
9899             !test_bit(__I40E_DOWN, pf->state) &&
9900             !test_bit(__I40E_CONFIG_BUSY, pf->state)) {
9901                 i40e_do_reset(pf, reset_flags, false);
9902         }
9903 }
9904
9905 /**
9906  * i40e_handle_link_event - Handle link event
9907  * @pf: board private structure
9908  * @e: event info posted on ARQ
9909  **/
9910 static void i40e_handle_link_event(struct i40e_pf *pf,
9911                                    struct i40e_arq_event_info *e)
9912 {
9913         struct i40e_aqc_get_link_status *status =
9914                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
9915
9916         /* Do a new status request to re-enable LSE reporting
9917          * and load new status information into the hw struct
9918          * This completely ignores any state information
9919          * in the ARQ event info, instead choosing to always
9920          * issue the AQ update link status command.
9921          */
9922         i40e_link_event(pf);
9923
9924         /* Check if module meets thermal requirements */
9925         if (status->phy_type == I40E_PHY_TYPE_NOT_SUPPORTED_HIGH_TEMP) {
9926                 dev_err(&pf->pdev->dev,
9927                         "Rx/Tx is disabled on this device because the module does not meet thermal requirements.\n");
9928                 dev_err(&pf->pdev->dev,
9929                         "Refer to the Intel(R) Ethernet Adapters and Devices User Guide for a list of supported modules.\n");
9930         } else {
9931                 /* check for unqualified module, if link is down, suppress
9932                  * the message if link was forced to be down.
9933                  */
9934                 if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
9935                     (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
9936                     (!(status->link_info & I40E_AQ_LINK_UP)) &&
9937                     (!(pf->flags & I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED))) {
9938                         dev_err(&pf->pdev->dev,
9939                                 "Rx/Tx is disabled on this device because an unsupported SFP module type was detected.\n");
9940                         dev_err(&pf->pdev->dev,
9941                                 "Refer to the Intel(R) Ethernet Adapters and Devices User Guide for a list of supported modules.\n");
9942                 }
9943         }
9944 }
9945
9946 /**
9947  * i40e_clean_adminq_subtask - Clean the AdminQ rings
9948  * @pf: board private structure
9949  **/
9950 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
9951 {
9952         struct i40e_arq_event_info event;
9953         struct i40e_hw *hw = &pf->hw;
9954         u16 pending, i = 0;
9955         i40e_status ret;
9956         u16 opcode;
9957         u32 oldval;
9958         u32 val;
9959
9960         /* Do not run clean AQ when PF reset fails */
9961         if (test_bit(__I40E_RESET_FAILED, pf->state))
9962                 return;
9963
9964         /* check for error indications */
9965         val = rd32(&pf->hw, pf->hw.aq.arq.len);
9966         oldval = val;
9967         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
9968                 if (hw->debug_mask & I40E_DEBUG_AQ)
9969                         dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
9970                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
9971         }
9972         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
9973                 if (hw->debug_mask & I40E_DEBUG_AQ)
9974                         dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
9975                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
9976                 pf->arq_overflows++;
9977         }
9978         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
9979                 if (hw->debug_mask & I40E_DEBUG_AQ)
9980                         dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
9981                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
9982         }
9983         if (oldval != val)
9984                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
9985
9986         val = rd32(&pf->hw, pf->hw.aq.asq.len);
9987         oldval = val;
9988         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
9989                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
9990                         dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
9991                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
9992         }
9993         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
9994                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
9995                         dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
9996                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
9997         }
9998         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
9999                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
10000                         dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
10001                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
10002         }
10003         if (oldval != val)
10004                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
10005
10006         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
10007         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
10008         if (!event.msg_buf)
10009                 return;
10010
10011         do {
10012                 ret = i40e_clean_arq_element(hw, &event, &pending);
10013                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
10014                         break;
10015                 else if (ret) {
10016                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
10017                         break;
10018                 }
10019
10020                 opcode = le16_to_cpu(event.desc.opcode);
10021                 switch (opcode) {
10022
10023                 case i40e_aqc_opc_get_link_status:
10024                         rtnl_lock();
10025                         i40e_handle_link_event(pf, &event);
10026                         rtnl_unlock();
10027                         break;
10028                 case i40e_aqc_opc_send_msg_to_pf:
10029                         ret = i40e_vc_process_vf_msg(pf,
10030                                         le16_to_cpu(event.desc.retval),
10031                                         le32_to_cpu(event.desc.cookie_high),
10032                                         le32_to_cpu(event.desc.cookie_low),
10033                                         event.msg_buf,
10034                                         event.msg_len);
10035                         break;
10036                 case i40e_aqc_opc_lldp_update_mib:
10037                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
10038 #ifdef CONFIG_I40E_DCB
10039                         rtnl_lock();
10040                         i40e_handle_lldp_event(pf, &event);
10041                         rtnl_unlock();
10042 #endif /* CONFIG_I40E_DCB */
10043                         break;
10044                 case i40e_aqc_opc_event_lan_overflow:
10045                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
10046                         i40e_handle_lan_overflow_event(pf, &event);
10047                         break;
10048                 case i40e_aqc_opc_send_msg_to_peer:
10049                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
10050                         break;
10051                 case i40e_aqc_opc_nvm_erase:
10052                 case i40e_aqc_opc_nvm_update:
10053                 case i40e_aqc_opc_oem_post_update:
10054                         i40e_debug(&pf->hw, I40E_DEBUG_NVM,
10055                                    "ARQ NVM operation 0x%04x completed\n",
10056                                    opcode);
10057                         break;
10058                 default:
10059                         dev_info(&pf->pdev->dev,
10060                                  "ARQ: Unknown event 0x%04x ignored\n",
10061                                  opcode);
10062                         break;
10063                 }
10064         } while (i++ < pf->adminq_work_limit);
10065
10066         if (i < pf->adminq_work_limit)
10067                 clear_bit(__I40E_ADMINQ_EVENT_PENDING, pf->state);
10068
10069         /* re-enable Admin queue interrupt cause */
10070         val = rd32(hw, I40E_PFINT_ICR0_ENA);
10071         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
10072         wr32(hw, I40E_PFINT_ICR0_ENA, val);
10073         i40e_flush(hw);
10074
10075         kfree(event.msg_buf);
10076 }
10077
10078 /**
10079  * i40e_verify_eeprom - make sure eeprom is good to use
10080  * @pf: board private structure
10081  **/
10082 static void i40e_verify_eeprom(struct i40e_pf *pf)
10083 {
10084         int err;
10085
10086         err = i40e_diag_eeprom_test(&pf->hw);
10087         if (err) {
10088                 /* retry in case of garbage read */
10089                 err = i40e_diag_eeprom_test(&pf->hw);
10090                 if (err) {
10091                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
10092                                  err);
10093                         set_bit(__I40E_BAD_EEPROM, pf->state);
10094                 }
10095         }
10096
10097         if (!err && test_bit(__I40E_BAD_EEPROM, pf->state)) {
10098                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
10099                 clear_bit(__I40E_BAD_EEPROM, pf->state);
10100         }
10101 }
10102
10103 /**
10104  * i40e_enable_pf_switch_lb
10105  * @pf: pointer to the PF structure
10106  *
10107  * enable switch loop back or die - no point in a return value
10108  **/
10109 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
10110 {
10111         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
10112         struct i40e_vsi_context ctxt;
10113         int ret;
10114
10115         ctxt.seid = pf->main_vsi_seid;
10116         ctxt.pf_num = pf->hw.pf_id;
10117         ctxt.vf_num = 0;
10118         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
10119         if (ret) {
10120                 dev_info(&pf->pdev->dev,
10121                          "couldn't get PF vsi config, err %s aq_err %s\n",
10122                          i40e_stat_str(&pf->hw, ret),
10123                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10124                 return;
10125         }
10126         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
10127         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
10128         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
10129
10130         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
10131         if (ret) {
10132                 dev_info(&pf->pdev->dev,
10133                          "update vsi switch failed, err %s aq_err %s\n",
10134                          i40e_stat_str(&pf->hw, ret),
10135                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10136         }
10137 }
10138
10139 /**
10140  * i40e_disable_pf_switch_lb
10141  * @pf: pointer to the PF structure
10142  *
10143  * disable switch loop back or die - no point in a return value
10144  **/
10145 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
10146 {
10147         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
10148         struct i40e_vsi_context ctxt;
10149         int ret;
10150
10151         ctxt.seid = pf->main_vsi_seid;
10152         ctxt.pf_num = pf->hw.pf_id;
10153         ctxt.vf_num = 0;
10154         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
10155         if (ret) {
10156                 dev_info(&pf->pdev->dev,
10157                          "couldn't get PF vsi config, err %s aq_err %s\n",
10158                          i40e_stat_str(&pf->hw, ret),
10159                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10160                 return;
10161         }
10162         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
10163         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
10164         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
10165
10166         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
10167         if (ret) {
10168                 dev_info(&pf->pdev->dev,
10169                          "update vsi switch failed, err %s aq_err %s\n",
10170                          i40e_stat_str(&pf->hw, ret),
10171                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10172         }
10173 }
10174
10175 /**
10176  * i40e_config_bridge_mode - Configure the HW bridge mode
10177  * @veb: pointer to the bridge instance
10178  *
10179  * Configure the loop back mode for the LAN VSI that is downlink to the
10180  * specified HW bridge instance. It is expected this function is called
10181  * when a new HW bridge is instantiated.
10182  **/
10183 static void i40e_config_bridge_mode(struct i40e_veb *veb)
10184 {
10185         struct i40e_pf *pf = veb->pf;
10186
10187         if (pf->hw.debug_mask & I40E_DEBUG_LAN)
10188                 dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
10189                          veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
10190         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
10191                 i40e_disable_pf_switch_lb(pf);
10192         else
10193                 i40e_enable_pf_switch_lb(pf);
10194 }
10195
10196 /**
10197  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
10198  * @veb: pointer to the VEB instance
10199  *
10200  * This is a recursive function that first builds the attached VSIs then
10201  * recurses in to build the next layer of VEB.  We track the connections
10202  * through our own index numbers because the seid's from the HW could
10203  * change across the reset.
10204  **/
10205 static int i40e_reconstitute_veb(struct i40e_veb *veb)
10206 {
10207         struct i40e_vsi *ctl_vsi = NULL;
10208         struct i40e_pf *pf = veb->pf;
10209         int v, veb_idx;
10210         int ret;
10211
10212         /* build VSI that owns this VEB, temporarily attached to base VEB */
10213         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
10214                 if (pf->vsi[v] &&
10215                     pf->vsi[v]->veb_idx == veb->idx &&
10216                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
10217                         ctl_vsi = pf->vsi[v];
10218                         break;
10219                 }
10220         }
10221         if (!ctl_vsi) {
10222                 dev_info(&pf->pdev->dev,
10223                          "missing owner VSI for veb_idx %d\n", veb->idx);
10224                 ret = -ENOENT;
10225                 goto end_reconstitute;
10226         }
10227         if (ctl_vsi != pf->vsi[pf->lan_vsi])
10228                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
10229         ret = i40e_add_vsi(ctl_vsi);
10230         if (ret) {
10231                 dev_info(&pf->pdev->dev,
10232                          "rebuild of veb_idx %d owner VSI failed: %d\n",
10233                          veb->idx, ret);
10234                 goto end_reconstitute;
10235         }
10236         i40e_vsi_reset_stats(ctl_vsi);
10237
10238         /* create the VEB in the switch and move the VSI onto the VEB */
10239         ret = i40e_add_veb(veb, ctl_vsi);
10240         if (ret)
10241                 goto end_reconstitute;
10242
10243         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
10244                 veb->bridge_mode = BRIDGE_MODE_VEB;
10245         else
10246                 veb->bridge_mode = BRIDGE_MODE_VEPA;
10247         i40e_config_bridge_mode(veb);
10248
10249         /* create the remaining VSIs attached to this VEB */
10250         for (v = 0; v < pf->num_alloc_vsi; v++) {
10251                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
10252                         continue;
10253
10254                 if (pf->vsi[v]->veb_idx == veb->idx) {
10255                         struct i40e_vsi *vsi = pf->vsi[v];
10256
10257                         vsi->uplink_seid = veb->seid;
10258                         ret = i40e_add_vsi(vsi);
10259                         if (ret) {
10260                                 dev_info(&pf->pdev->dev,
10261                                          "rebuild of vsi_idx %d failed: %d\n",
10262                                          v, ret);
10263                                 goto end_reconstitute;
10264                         }
10265                         i40e_vsi_reset_stats(vsi);
10266                 }
10267         }
10268
10269         /* create any VEBs attached to this VEB - RECURSION */
10270         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
10271                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
10272                         pf->veb[veb_idx]->uplink_seid = veb->seid;
10273                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
10274                         if (ret)
10275                                 break;
10276                 }
10277         }
10278
10279 end_reconstitute:
10280         return ret;
10281 }
10282
10283 /**
10284  * i40e_get_capabilities - get info about the HW
10285  * @pf: the PF struct
10286  * @list_type: AQ capability to be queried
10287  **/
10288 static int i40e_get_capabilities(struct i40e_pf *pf,
10289                                  enum i40e_admin_queue_opc list_type)
10290 {
10291         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
10292         u16 data_size;
10293         int buf_len;
10294         int err;
10295
10296         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
10297         do {
10298                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
10299                 if (!cap_buf)
10300                         return -ENOMEM;
10301
10302                 /* this loads the data into the hw struct for us */
10303                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
10304                                                     &data_size, list_type,
10305                                                     NULL);
10306                 /* data loaded, buffer no longer needed */
10307                 kfree(cap_buf);
10308
10309                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
10310                         /* retry with a larger buffer */
10311                         buf_len = data_size;
10312                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK || err) {
10313                         dev_info(&pf->pdev->dev,
10314                                  "capability discovery failed, err %s aq_err %s\n",
10315                                  i40e_stat_str(&pf->hw, err),
10316                                  i40e_aq_str(&pf->hw,
10317                                              pf->hw.aq.asq_last_status));
10318                         return -ENODEV;
10319                 }
10320         } while (err);
10321
10322         if (pf->hw.debug_mask & I40E_DEBUG_USER) {
10323                 if (list_type == i40e_aqc_opc_list_func_capabilities) {
10324                         dev_info(&pf->pdev->dev,
10325                                  "pf=%d, num_vfs=%d, msix_pf=%d, msix_vf=%d, fd_g=%d, fd_b=%d, pf_max_q=%d num_vsi=%d\n",
10326                                  pf->hw.pf_id, pf->hw.func_caps.num_vfs,
10327                                  pf->hw.func_caps.num_msix_vectors,
10328                                  pf->hw.func_caps.num_msix_vectors_vf,
10329                                  pf->hw.func_caps.fd_filters_guaranteed,
10330                                  pf->hw.func_caps.fd_filters_best_effort,
10331                                  pf->hw.func_caps.num_tx_qp,
10332                                  pf->hw.func_caps.num_vsis);
10333                 } else if (list_type == i40e_aqc_opc_list_dev_capabilities) {
10334                         dev_info(&pf->pdev->dev,
10335                                  "switch_mode=0x%04x, function_valid=0x%08x\n",
10336                                  pf->hw.dev_caps.switch_mode,
10337                                  pf->hw.dev_caps.valid_functions);
10338                         dev_info(&pf->pdev->dev,
10339                                  "SR-IOV=%d, num_vfs for all function=%u\n",
10340                                  pf->hw.dev_caps.sr_iov_1_1,
10341                                  pf->hw.dev_caps.num_vfs);
10342                         dev_info(&pf->pdev->dev,
10343                                  "num_vsis=%u, num_rx:%u, num_tx=%u\n",
10344                                  pf->hw.dev_caps.num_vsis,
10345                                  pf->hw.dev_caps.num_rx_qp,
10346                                  pf->hw.dev_caps.num_tx_qp);
10347                 }
10348         }
10349         if (list_type == i40e_aqc_opc_list_func_capabilities) {
10350 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
10351                        + pf->hw.func_caps.num_vfs)
10352                 if (pf->hw.revision_id == 0 &&
10353                     pf->hw.func_caps.num_vsis < DEF_NUM_VSI) {
10354                         dev_info(&pf->pdev->dev,
10355                                  "got num_vsis %d, setting num_vsis to %d\n",
10356                                  pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
10357                         pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
10358                 }
10359         }
10360         return 0;
10361 }
10362
10363 static int i40e_vsi_clear(struct i40e_vsi *vsi);
10364
10365 /**
10366  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
10367  * @pf: board private structure
10368  **/
10369 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
10370 {
10371         struct i40e_vsi *vsi;
10372
10373         /* quick workaround for an NVM issue that leaves a critical register
10374          * uninitialized
10375          */
10376         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
10377                 static const u32 hkey[] = {
10378                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
10379                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
10380                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
10381                         0x95b3a76d};
10382                 int i;
10383
10384                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
10385                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
10386         }
10387
10388         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
10389                 return;
10390
10391         /* find existing VSI and see if it needs configuring */
10392         vsi = i40e_find_vsi_by_type(pf, I40E_VSI_FDIR);
10393
10394         /* create a new VSI if none exists */
10395         if (!vsi) {
10396                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
10397                                      pf->vsi[pf->lan_vsi]->seid, 0);
10398                 if (!vsi) {
10399                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
10400                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
10401                         pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
10402                         return;
10403                 }
10404         }
10405
10406         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
10407 }
10408
10409 /**
10410  * i40e_fdir_teardown - release the Flow Director resources
10411  * @pf: board private structure
10412  **/
10413 static void i40e_fdir_teardown(struct i40e_pf *pf)
10414 {
10415         struct i40e_vsi *vsi;
10416
10417         i40e_fdir_filter_exit(pf);
10418         vsi = i40e_find_vsi_by_type(pf, I40E_VSI_FDIR);
10419         if (vsi)
10420                 i40e_vsi_release(vsi);
10421 }
10422
10423 /**
10424  * i40e_rebuild_cloud_filters - Rebuilds cloud filters for VSIs
10425  * @vsi: PF main vsi
10426  * @seid: seid of main or channel VSIs
10427  *
10428  * Rebuilds cloud filters associated with main VSI and channel VSIs if they
10429  * existed before reset
10430  **/
10431 static int i40e_rebuild_cloud_filters(struct i40e_vsi *vsi, u16 seid)
10432 {
10433         struct i40e_cloud_filter *cfilter;
10434         struct i40e_pf *pf = vsi->back;
10435         struct hlist_node *node;
10436         i40e_status ret;
10437
10438         /* Add cloud filters back if they exist */
10439         hlist_for_each_entry_safe(cfilter, node, &pf->cloud_filter_list,
10440                                   cloud_node) {
10441                 if (cfilter->seid != seid)
10442                         continue;
10443
10444                 if (cfilter->dst_port)
10445                         ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter,
10446                                                                 true);
10447                 else
10448                         ret = i40e_add_del_cloud_filter(vsi, cfilter, true);
10449
10450                 if (ret) {
10451                         dev_dbg(&pf->pdev->dev,
10452                                 "Failed to rebuild cloud filter, err %s aq_err %s\n",
10453                                 i40e_stat_str(&pf->hw, ret),
10454                                 i40e_aq_str(&pf->hw,
10455                                             pf->hw.aq.asq_last_status));
10456                         return ret;
10457                 }
10458         }
10459         return 0;
10460 }
10461
10462 /**
10463  * i40e_rebuild_channels - Rebuilds channel VSIs if they existed before reset
10464  * @vsi: PF main vsi
10465  *
10466  * Rebuilds channel VSIs if they existed before reset
10467  **/
10468 static int i40e_rebuild_channels(struct i40e_vsi *vsi)
10469 {
10470         struct i40e_channel *ch, *ch_tmp;
10471         i40e_status ret;
10472
10473         if (list_empty(&vsi->ch_list))
10474                 return 0;
10475
10476         list_for_each_entry_safe(ch, ch_tmp, &vsi->ch_list, list) {
10477                 if (!ch->initialized)
10478                         break;
10479                 /* Proceed with creation of channel (VMDq2) VSI */
10480                 ret = i40e_add_channel(vsi->back, vsi->uplink_seid, ch);
10481                 if (ret) {
10482                         dev_info(&vsi->back->pdev->dev,
10483                                  "failed to rebuild channels using uplink_seid %u\n",
10484                                  vsi->uplink_seid);
10485                         return ret;
10486                 }
10487                 /* Reconfigure TX queues using QTX_CTL register */
10488                 ret = i40e_channel_config_tx_ring(vsi->back, vsi, ch);
10489                 if (ret) {
10490                         dev_info(&vsi->back->pdev->dev,
10491                                  "failed to configure TX rings for channel %u\n",
10492                                  ch->seid);
10493                         return ret;
10494                 }
10495                 /* update 'next_base_queue' */
10496                 vsi->next_base_queue = vsi->next_base_queue +
10497                                                         ch->num_queue_pairs;
10498                 if (ch->max_tx_rate) {
10499                         u64 credits = ch->max_tx_rate;
10500
10501                         if (i40e_set_bw_limit(vsi, ch->seid,
10502                                               ch->max_tx_rate))
10503                                 return -EINVAL;
10504
10505                         do_div(credits, I40E_BW_CREDIT_DIVISOR);
10506                         dev_dbg(&vsi->back->pdev->dev,
10507                                 "Set tx rate of %llu Mbps (count of 50Mbps %llu) for vsi->seid %u\n",
10508                                 ch->max_tx_rate,
10509                                 credits,
10510                                 ch->seid);
10511                 }
10512                 ret = i40e_rebuild_cloud_filters(vsi, ch->seid);
10513                 if (ret) {
10514                         dev_dbg(&vsi->back->pdev->dev,
10515                                 "Failed to rebuild cloud filters for channel VSI %u\n",
10516                                 ch->seid);
10517                         return ret;
10518                 }
10519         }
10520         return 0;
10521 }
10522
10523 /**
10524  * i40e_prep_for_reset - prep for the core to reset
10525  * @pf: board private structure
10526  *
10527  * Close up the VFs and other things in prep for PF Reset.
10528   **/
10529 static void i40e_prep_for_reset(struct i40e_pf *pf)
10530 {
10531         struct i40e_hw *hw = &pf->hw;
10532         i40e_status ret = 0;
10533         u32 v;
10534
10535         clear_bit(__I40E_RESET_INTR_RECEIVED, pf->state);
10536         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, pf->state))
10537                 return;
10538         if (i40e_check_asq_alive(&pf->hw))
10539                 i40e_vc_notify_reset(pf);
10540
10541         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
10542
10543         /* quiesce the VSIs and their queues that are not already DOWN */
10544         i40e_pf_quiesce_all_vsi(pf);
10545
10546         for (v = 0; v < pf->num_alloc_vsi; v++) {
10547                 if (pf->vsi[v])
10548                         pf->vsi[v]->seid = 0;
10549         }
10550
10551         i40e_shutdown_adminq(&pf->hw);
10552
10553         /* call shutdown HMC */
10554         if (hw->hmc.hmc_obj) {
10555                 ret = i40e_shutdown_lan_hmc(hw);
10556                 if (ret)
10557                         dev_warn(&pf->pdev->dev,
10558                                  "shutdown_lan_hmc failed: %d\n", ret);
10559         }
10560
10561         /* Save the current PTP time so that we can restore the time after the
10562          * reset completes.
10563          */
10564         i40e_ptp_save_hw_time(pf);
10565 }
10566
10567 /**
10568  * i40e_send_version - update firmware with driver version
10569  * @pf: PF struct
10570  */
10571 static void i40e_send_version(struct i40e_pf *pf)
10572 {
10573         struct i40e_driver_version dv;
10574
10575         dv.major_version = 0xff;
10576         dv.minor_version = 0xff;
10577         dv.build_version = 0xff;
10578         dv.subbuild_version = 0;
10579         strlcpy(dv.driver_string, UTS_RELEASE, sizeof(dv.driver_string));
10580         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
10581 }
10582
10583 /**
10584  * i40e_get_oem_version - get OEM specific version information
10585  * @hw: pointer to the hardware structure
10586  **/
10587 static void i40e_get_oem_version(struct i40e_hw *hw)
10588 {
10589         u16 block_offset = 0xffff;
10590         u16 block_length = 0;
10591         u16 capabilities = 0;
10592         u16 gen_snap = 0;
10593         u16 release = 0;
10594
10595 #define I40E_SR_NVM_OEM_VERSION_PTR             0x1B
10596 #define I40E_NVM_OEM_LENGTH_OFFSET              0x00
10597 #define I40E_NVM_OEM_CAPABILITIES_OFFSET        0x01
10598 #define I40E_NVM_OEM_GEN_OFFSET                 0x02
10599 #define I40E_NVM_OEM_RELEASE_OFFSET             0x03
10600 #define I40E_NVM_OEM_CAPABILITIES_MASK          0x000F
10601 #define I40E_NVM_OEM_LENGTH                     3
10602
10603         /* Check if pointer to OEM version block is valid. */
10604         i40e_read_nvm_word(hw, I40E_SR_NVM_OEM_VERSION_PTR, &block_offset);
10605         if (block_offset == 0xffff)
10606                 return;
10607
10608         /* Check if OEM version block has correct length. */
10609         i40e_read_nvm_word(hw, block_offset + I40E_NVM_OEM_LENGTH_OFFSET,
10610                            &block_length);
10611         if (block_length < I40E_NVM_OEM_LENGTH)
10612                 return;
10613
10614         /* Check if OEM version format is as expected. */
10615         i40e_read_nvm_word(hw, block_offset + I40E_NVM_OEM_CAPABILITIES_OFFSET,
10616                            &capabilities);
10617         if ((capabilities & I40E_NVM_OEM_CAPABILITIES_MASK) != 0)
10618                 return;
10619
10620         i40e_read_nvm_word(hw, block_offset + I40E_NVM_OEM_GEN_OFFSET,
10621                            &gen_snap);
10622         i40e_read_nvm_word(hw, block_offset + I40E_NVM_OEM_RELEASE_OFFSET,
10623                            &release);
10624         hw->nvm.oem_ver = (gen_snap << I40E_OEM_SNAP_SHIFT) | release;
10625         hw->nvm.eetrack = I40E_OEM_EETRACK_ID;
10626 }
10627
10628 /**
10629  * i40e_reset - wait for core reset to finish reset, reset pf if corer not seen
10630  * @pf: board private structure
10631  **/
10632 static int i40e_reset(struct i40e_pf *pf)
10633 {
10634         struct i40e_hw *hw = &pf->hw;
10635         i40e_status ret;
10636
10637         ret = i40e_pf_reset(hw);
10638         if (ret) {
10639                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
10640                 set_bit(__I40E_RESET_FAILED, pf->state);
10641                 clear_bit(__I40E_RESET_RECOVERY_PENDING, pf->state);
10642         } else {
10643                 pf->pfr_count++;
10644         }
10645         return ret;
10646 }
10647
10648 /**
10649  * i40e_rebuild - rebuild using a saved config
10650  * @pf: board private structure
10651  * @reinit: if the Main VSI needs to re-initialized.
10652  * @lock_acquired: indicates whether or not the lock has been acquired
10653  * before this function was called.
10654  **/
10655 static void i40e_rebuild(struct i40e_pf *pf, bool reinit, bool lock_acquired)
10656 {
10657         const bool is_recovery_mode_reported = i40e_check_recovery_mode(pf);
10658         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
10659         struct i40e_hw *hw = &pf->hw;
10660         i40e_status ret;
10661         u32 val;
10662         int v;
10663
10664         if (test_bit(__I40E_EMP_RESET_INTR_RECEIVED, pf->state) &&
10665             is_recovery_mode_reported)
10666                 i40e_set_ethtool_ops(pf->vsi[pf->lan_vsi]->netdev);
10667
10668         if (test_bit(__I40E_DOWN, pf->state) &&
10669             !test_bit(__I40E_RECOVERY_MODE, pf->state))
10670                 goto clear_recovery;
10671         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
10672
10673         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
10674         ret = i40e_init_adminq(&pf->hw);
10675         if (ret) {
10676                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
10677                          i40e_stat_str(&pf->hw, ret),
10678                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10679                 goto clear_recovery;
10680         }
10681         i40e_get_oem_version(&pf->hw);
10682
10683         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, pf->state)) {
10684                 /* The following delay is necessary for firmware update. */
10685                 mdelay(1000);
10686         }
10687
10688         /* re-verify the eeprom if we just had an EMP reset */
10689         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, pf->state))
10690                 i40e_verify_eeprom(pf);
10691
10692         /* if we are going out of or into recovery mode we have to act
10693          * accordingly with regard to resources initialization
10694          * and deinitialization
10695          */
10696         if (test_bit(__I40E_RECOVERY_MODE, pf->state)) {
10697                 if (i40e_get_capabilities(pf,
10698                                           i40e_aqc_opc_list_func_capabilities))
10699                         goto end_unlock;
10700
10701                 if (is_recovery_mode_reported) {
10702                         /* we're staying in recovery mode so we'll reinitialize
10703                          * misc vector here
10704                          */
10705                         if (i40e_setup_misc_vector_for_recovery_mode(pf))
10706                                 goto end_unlock;
10707                 } else {
10708                         if (!lock_acquired)
10709                                 rtnl_lock();
10710                         /* we're going out of recovery mode so we'll free
10711                          * the IRQ allocated specifically for recovery mode
10712                          * and restore the interrupt scheme
10713                          */
10714                         free_irq(pf->pdev->irq, pf);
10715                         i40e_clear_interrupt_scheme(pf);
10716                         if (i40e_restore_interrupt_scheme(pf))
10717                                 goto end_unlock;
10718                 }
10719
10720                 /* tell the firmware that we're starting */
10721                 i40e_send_version(pf);
10722
10723                 /* bail out in case recovery mode was detected, as there is
10724                  * no need for further configuration.
10725                  */
10726                 goto end_unlock;
10727         }
10728
10729         i40e_clear_pxe_mode(hw);
10730         ret = i40e_get_capabilities(pf, i40e_aqc_opc_list_func_capabilities);
10731         if (ret)
10732                 goto end_core_reset;
10733
10734         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10735                                 hw->func_caps.num_rx_qp, 0, 0);
10736         if (ret) {
10737                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
10738                 goto end_core_reset;
10739         }
10740         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10741         if (ret) {
10742                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
10743                 goto end_core_reset;
10744         }
10745
10746 #ifdef CONFIG_I40E_DCB
10747         /* Enable FW to write a default DCB config on link-up
10748          * unless I40E_FLAG_TC_MQPRIO was enabled or DCB
10749          * is not supported with new link speed
10750          */
10751         if (pf->flags & I40E_FLAG_TC_MQPRIO) {
10752                 i40e_aq_set_dcb_parameters(hw, false, NULL);
10753         } else {
10754                 if (I40E_IS_X710TL_DEVICE(hw->device_id) &&
10755                     (hw->phy.link_info.link_speed &
10756                      (I40E_LINK_SPEED_2_5GB | I40E_LINK_SPEED_5GB))) {
10757                         i40e_aq_set_dcb_parameters(hw, false, NULL);
10758                         dev_warn(&pf->pdev->dev,
10759                                  "DCB is not supported for X710-T*L 2.5/5G speeds\n");
10760                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10761                 } else {
10762                         i40e_aq_set_dcb_parameters(hw, true, NULL);
10763                         ret = i40e_init_pf_dcb(pf);
10764                         if (ret) {
10765                                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n",
10766                                          ret);
10767                                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10768                                 /* Continue without DCB enabled */
10769                         }
10770                 }
10771         }
10772
10773 #endif /* CONFIG_I40E_DCB */
10774         if (!lock_acquired)
10775                 rtnl_lock();
10776         ret = i40e_setup_pf_switch(pf, reinit, true);
10777         if (ret)
10778                 goto end_unlock;
10779
10780         /* The driver only wants link up/down and module qualification
10781          * reports from firmware.  Note the negative logic.
10782          */
10783         ret = i40e_aq_set_phy_int_mask(&pf->hw,
10784                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
10785                                          I40E_AQ_EVENT_MEDIA_NA |
10786                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
10787         if (ret)
10788                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
10789                          i40e_stat_str(&pf->hw, ret),
10790                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10791
10792         /* Rebuild the VSIs and VEBs that existed before reset.
10793          * They are still in our local switch element arrays, so only
10794          * need to rebuild the switch model in the HW.
10795          *
10796          * If there were VEBs but the reconstitution failed, we'll try
10797          * to recover minimal use by getting the basic PF VSI working.
10798          */
10799         if (vsi->uplink_seid != pf->mac_seid) {
10800                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
10801                 /* find the one VEB connected to the MAC, and find orphans */
10802                 for (v = 0; v < I40E_MAX_VEB; v++) {
10803                         if (!pf->veb[v])
10804                                 continue;
10805
10806                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
10807                             pf->veb[v]->uplink_seid == 0) {
10808                                 ret = i40e_reconstitute_veb(pf->veb[v]);
10809
10810                                 if (!ret)
10811                                         continue;
10812
10813                                 /* If Main VEB failed, we're in deep doodoo,
10814                                  * so give up rebuilding the switch and set up
10815                                  * for minimal rebuild of PF VSI.
10816                                  * If orphan failed, we'll report the error
10817                                  * but try to keep going.
10818                                  */
10819                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
10820                                         dev_info(&pf->pdev->dev,
10821                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
10822                                                  ret);
10823                                         vsi->uplink_seid = pf->mac_seid;
10824                                         break;
10825                                 } else if (pf->veb[v]->uplink_seid == 0) {
10826                                         dev_info(&pf->pdev->dev,
10827                                                  "rebuild of orphan VEB failed: %d\n",
10828                                                  ret);
10829                                 }
10830                         }
10831                 }
10832         }
10833
10834         if (vsi->uplink_seid == pf->mac_seid) {
10835                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
10836                 /* no VEB, so rebuild only the Main VSI */
10837                 ret = i40e_add_vsi(vsi);
10838                 if (ret) {
10839                         dev_info(&pf->pdev->dev,
10840                                  "rebuild of Main VSI failed: %d\n", ret);
10841                         goto end_unlock;
10842                 }
10843         }
10844
10845         if (vsi->mqprio_qopt.max_rate[0]) {
10846                 u64 max_tx_rate = vsi->mqprio_qopt.max_rate[0];
10847                 u64 credits = 0;
10848
10849                 do_div(max_tx_rate, I40E_BW_MBPS_DIVISOR);
10850                 ret = i40e_set_bw_limit(vsi, vsi->seid, max_tx_rate);
10851                 if (ret)
10852                         goto end_unlock;
10853
10854                 credits = max_tx_rate;
10855                 do_div(credits, I40E_BW_CREDIT_DIVISOR);
10856                 dev_dbg(&vsi->back->pdev->dev,
10857                         "Set tx rate of %llu Mbps (count of 50Mbps %llu) for vsi->seid %u\n",
10858                         max_tx_rate,
10859                         credits,
10860                         vsi->seid);
10861         }
10862
10863         ret = i40e_rebuild_cloud_filters(vsi, vsi->seid);
10864         if (ret)
10865                 goto end_unlock;
10866
10867         /* PF Main VSI is rebuild by now, go ahead and rebuild channel VSIs
10868          * for this main VSI if they exist
10869          */
10870         ret = i40e_rebuild_channels(vsi);
10871         if (ret)
10872                 goto end_unlock;
10873
10874         /* Reconfigure hardware for allowing smaller MSS in the case
10875          * of TSO, so that we avoid the MDD being fired and causing
10876          * a reset in the case of small MSS+TSO.
10877          */
10878 #define I40E_REG_MSS          0x000E64DC
10879 #define I40E_REG_MSS_MIN_MASK 0x3FF0000
10880 #define I40E_64BYTE_MSS       0x400000
10881         val = rd32(hw, I40E_REG_MSS);
10882         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
10883                 val &= ~I40E_REG_MSS_MIN_MASK;
10884                 val |= I40E_64BYTE_MSS;
10885                 wr32(hw, I40E_REG_MSS, val);
10886         }
10887
10888         if (pf->hw_features & I40E_HW_RESTART_AUTONEG) {
10889                 msleep(75);
10890                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
10891                 if (ret)
10892                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
10893                                  i40e_stat_str(&pf->hw, ret),
10894                                  i40e_aq_str(&pf->hw,
10895                                              pf->hw.aq.asq_last_status));
10896         }
10897         /* reinit the misc interrupt */
10898         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
10899                 ret = i40e_setup_misc_vector(pf);
10900
10901         /* Add a filter to drop all Flow control frames from any VSI from being
10902          * transmitted. By doing so we stop a malicious VF from sending out
10903          * PAUSE or PFC frames and potentially controlling traffic for other
10904          * PF/VF VSIs.
10905          * The FW can still send Flow control frames if enabled.
10906          */
10907         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
10908                                                        pf->main_vsi_seid);
10909
10910         /* restart the VSIs that were rebuilt and running before the reset */
10911         i40e_pf_unquiesce_all_vsi(pf);
10912
10913         /* Release the RTNL lock before we start resetting VFs */
10914         if (!lock_acquired)
10915                 rtnl_unlock();
10916
10917         /* Restore promiscuous settings */
10918         ret = i40e_set_promiscuous(pf, pf->cur_promisc);
10919         if (ret)
10920                 dev_warn(&pf->pdev->dev,
10921                          "Failed to restore promiscuous setting: %s, err %s aq_err %s\n",
10922                          pf->cur_promisc ? "on" : "off",
10923                          i40e_stat_str(&pf->hw, ret),
10924                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10925
10926         i40e_reset_all_vfs(pf, true);
10927
10928         /* tell the firmware that we're starting */
10929         i40e_send_version(pf);
10930
10931         /* We've already released the lock, so don't do it again */
10932         goto end_core_reset;
10933
10934 end_unlock:
10935         if (!lock_acquired)
10936                 rtnl_unlock();
10937 end_core_reset:
10938         clear_bit(__I40E_RESET_FAILED, pf->state);
10939 clear_recovery:
10940         clear_bit(__I40E_RESET_RECOVERY_PENDING, pf->state);
10941         clear_bit(__I40E_TIMEOUT_RECOVERY_PENDING, pf->state);
10942 }
10943
10944 /**
10945  * i40e_reset_and_rebuild - reset and rebuild using a saved config
10946  * @pf: board private structure
10947  * @reinit: if the Main VSI needs to re-initialized.
10948  * @lock_acquired: indicates whether or not the lock has been acquired
10949  * before this function was called.
10950  **/
10951 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit,
10952                                    bool lock_acquired)
10953 {
10954         int ret;
10955
10956         if (test_bit(__I40E_IN_REMOVE, pf->state))
10957                 return;
10958         /* Now we wait for GRST to settle out.
10959          * We don't have to delete the VEBs or VSIs from the hw switch
10960          * because the reset will make them disappear.
10961          */
10962         ret = i40e_reset(pf);
10963         if (!ret)
10964                 i40e_rebuild(pf, reinit, lock_acquired);
10965 }
10966
10967 /**
10968  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
10969  * @pf: board private structure
10970  *
10971  * Close up the VFs and other things in prep for a Core Reset,
10972  * then get ready to rebuild the world.
10973  * @lock_acquired: indicates whether or not the lock has been acquired
10974  * before this function was called.
10975  **/
10976 static void i40e_handle_reset_warning(struct i40e_pf *pf, bool lock_acquired)
10977 {
10978         i40e_prep_for_reset(pf);
10979         i40e_reset_and_rebuild(pf, false, lock_acquired);
10980 }
10981
10982 /**
10983  * i40e_handle_mdd_event
10984  * @pf: pointer to the PF structure
10985  *
10986  * Called from the MDD irq handler to identify possibly malicious vfs
10987  **/
10988 static void i40e_handle_mdd_event(struct i40e_pf *pf)
10989 {
10990         struct i40e_hw *hw = &pf->hw;
10991         bool mdd_detected = false;
10992         struct i40e_vf *vf;
10993         u32 reg;
10994         int i;
10995
10996         if (!test_bit(__I40E_MDD_EVENT_PENDING, pf->state))
10997                 return;
10998
10999         /* find what triggered the MDD event */
11000         reg = rd32(hw, I40E_GL_MDET_TX);
11001         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
11002                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
11003                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
11004                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
11005                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
11006                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
11007                                 I40E_GL_MDET_TX_EVENT_SHIFT;
11008                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
11009                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
11010                                 pf->hw.func_caps.base_queue;
11011                 if (netif_msg_tx_err(pf))
11012                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
11013                                  event, queue, pf_num, vf_num);
11014                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
11015                 mdd_detected = true;
11016         }
11017         reg = rd32(hw, I40E_GL_MDET_RX);
11018         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
11019                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
11020                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
11021                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
11022                                 I40E_GL_MDET_RX_EVENT_SHIFT;
11023                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
11024                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
11025                                 pf->hw.func_caps.base_queue;
11026                 if (netif_msg_rx_err(pf))
11027                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
11028                                  event, queue, func);
11029                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
11030                 mdd_detected = true;
11031         }
11032
11033         if (mdd_detected) {
11034                 reg = rd32(hw, I40E_PF_MDET_TX);
11035                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
11036                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
11037                         dev_dbg(&pf->pdev->dev, "TX driver issue detected on PF\n");
11038                 }
11039                 reg = rd32(hw, I40E_PF_MDET_RX);
11040                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
11041                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
11042                         dev_dbg(&pf->pdev->dev, "RX driver issue detected on PF\n");
11043                 }
11044         }
11045
11046         /* see if one of the VFs needs its hand slapped */
11047         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
11048                 vf = &(pf->vf[i]);
11049                 reg = rd32(hw, I40E_VP_MDET_TX(i));
11050                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
11051                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
11052                         vf->num_mdd_events++;
11053                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
11054                                  i);
11055                         dev_info(&pf->pdev->dev,
11056                                  "Use PF Control I/F to re-enable the VF\n");
11057                         set_bit(I40E_VF_STATE_DISABLED, &vf->vf_states);
11058                 }
11059
11060                 reg = rd32(hw, I40E_VP_MDET_RX(i));
11061                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
11062                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
11063                         vf->num_mdd_events++;
11064                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
11065                                  i);
11066                         dev_info(&pf->pdev->dev,
11067                                  "Use PF Control I/F to re-enable the VF\n");
11068                         set_bit(I40E_VF_STATE_DISABLED, &vf->vf_states);
11069                 }
11070         }
11071
11072         /* re-enable mdd interrupt cause */
11073         clear_bit(__I40E_MDD_EVENT_PENDING, pf->state);
11074         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
11075         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
11076         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
11077         i40e_flush(hw);
11078 }
11079
11080 /**
11081  * i40e_service_task - Run the driver's async subtasks
11082  * @work: pointer to work_struct containing our data
11083  **/
11084 static void i40e_service_task(struct work_struct *work)
11085 {
11086         struct i40e_pf *pf = container_of(work,
11087                                           struct i40e_pf,
11088                                           service_task);
11089         unsigned long start_time = jiffies;
11090
11091         /* don't bother with service tasks if a reset is in progress */
11092         if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
11093             test_bit(__I40E_SUSPENDED, pf->state))
11094                 return;
11095
11096         if (test_and_set_bit(__I40E_SERVICE_SCHED, pf->state))
11097                 return;
11098
11099         if (!test_bit(__I40E_RECOVERY_MODE, pf->state)) {
11100                 i40e_detect_recover_hung(pf->vsi[pf->lan_vsi]);
11101                 i40e_sync_filters_subtask(pf);
11102                 i40e_reset_subtask(pf);
11103                 i40e_handle_mdd_event(pf);
11104                 i40e_vc_process_vflr_event(pf);
11105                 i40e_watchdog_subtask(pf);
11106                 i40e_fdir_reinit_subtask(pf);
11107                 if (test_and_clear_bit(__I40E_CLIENT_RESET, pf->state)) {
11108                         /* Client subtask will reopen next time through. */
11109                         i40e_notify_client_of_netdev_close(pf->vsi[pf->lan_vsi],
11110                                                            true);
11111                 } else {
11112                         i40e_client_subtask(pf);
11113                         if (test_and_clear_bit(__I40E_CLIENT_L2_CHANGE,
11114                                                pf->state))
11115                                 i40e_notify_client_of_l2_param_changes(
11116                                                                 pf->vsi[pf->lan_vsi]);
11117                 }
11118                 i40e_sync_filters_subtask(pf);
11119         } else {
11120                 i40e_reset_subtask(pf);
11121         }
11122
11123         i40e_clean_adminq_subtask(pf);
11124
11125         /* flush memory to make sure state is correct before next watchdog */
11126         smp_mb__before_atomic();
11127         clear_bit(__I40E_SERVICE_SCHED, pf->state);
11128
11129         /* If the tasks have taken longer than one timer cycle or there
11130          * is more work to be done, reschedule the service task now
11131          * rather than wait for the timer to tick again.
11132          */
11133         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
11134             test_bit(__I40E_ADMINQ_EVENT_PENDING, pf->state)             ||
11135             test_bit(__I40E_MDD_EVENT_PENDING, pf->state)                ||
11136             test_bit(__I40E_VFLR_EVENT_PENDING, pf->state))
11137                 i40e_service_event_schedule(pf);
11138 }
11139
11140 /**
11141  * i40e_service_timer - timer callback
11142  * @t: timer list pointer
11143  **/
11144 static void i40e_service_timer(struct timer_list *t)
11145 {
11146         struct i40e_pf *pf = from_timer(pf, t, service_timer);
11147
11148         mod_timer(&pf->service_timer,
11149                   round_jiffies(jiffies + pf->service_timer_period));
11150         i40e_service_event_schedule(pf);
11151 }
11152
11153 /**
11154  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
11155  * @vsi: the VSI being configured
11156  **/
11157 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
11158 {
11159         struct i40e_pf *pf = vsi->back;
11160
11161         switch (vsi->type) {
11162         case I40E_VSI_MAIN:
11163                 vsi->alloc_queue_pairs = pf->num_lan_qps;
11164                 if (!vsi->num_tx_desc)
11165                         vsi->num_tx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
11166                                                  I40E_REQ_DESCRIPTOR_MULTIPLE);
11167                 if (!vsi->num_rx_desc)
11168                         vsi->num_rx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
11169                                                  I40E_REQ_DESCRIPTOR_MULTIPLE);
11170                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
11171                         vsi->num_q_vectors = pf->num_lan_msix;
11172                 else
11173                         vsi->num_q_vectors = 1;
11174
11175                 break;
11176
11177         case I40E_VSI_FDIR:
11178                 vsi->alloc_queue_pairs = 1;
11179                 vsi->num_tx_desc = ALIGN(I40E_FDIR_RING_COUNT,
11180                                          I40E_REQ_DESCRIPTOR_MULTIPLE);
11181                 vsi->num_rx_desc = ALIGN(I40E_FDIR_RING_COUNT,
11182                                          I40E_REQ_DESCRIPTOR_MULTIPLE);
11183                 vsi->num_q_vectors = pf->num_fdsb_msix;
11184                 break;
11185
11186         case I40E_VSI_VMDQ2:
11187                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
11188                 if (!vsi->num_tx_desc)
11189                         vsi->num_tx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
11190                                                  I40E_REQ_DESCRIPTOR_MULTIPLE);
11191                 if (!vsi->num_rx_desc)
11192                         vsi->num_rx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
11193                                                  I40E_REQ_DESCRIPTOR_MULTIPLE);
11194                 vsi->num_q_vectors = pf->num_vmdq_msix;
11195                 break;
11196
11197         case I40E_VSI_SRIOV:
11198                 vsi->alloc_queue_pairs = pf->num_vf_qps;
11199                 if (!vsi->num_tx_desc)
11200                         vsi->num_tx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
11201                                                  I40E_REQ_DESCRIPTOR_MULTIPLE);
11202                 if (!vsi->num_rx_desc)
11203                         vsi->num_rx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
11204                                                  I40E_REQ_DESCRIPTOR_MULTIPLE);
11205                 break;
11206
11207         default:
11208                 WARN_ON(1);
11209                 return -ENODATA;
11210         }
11211
11212         if (is_kdump_kernel()) {
11213                 vsi->num_tx_desc = I40E_MIN_NUM_DESCRIPTORS;
11214                 vsi->num_rx_desc = I40E_MIN_NUM_DESCRIPTORS;
11215         }
11216
11217         return 0;
11218 }
11219
11220 /**
11221  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
11222  * @vsi: VSI pointer
11223  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
11224  *
11225  * On error: returns error code (negative)
11226  * On success: returns 0
11227  **/
11228 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
11229 {
11230         struct i40e_ring **next_rings;
11231         int size;
11232         int ret = 0;
11233
11234         /* allocate memory for both Tx, XDP Tx and Rx ring pointers */
11235         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs *
11236                (i40e_enabled_xdp_vsi(vsi) ? 3 : 2);
11237         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
11238         if (!vsi->tx_rings)
11239                 return -ENOMEM;
11240         next_rings = vsi->tx_rings + vsi->alloc_queue_pairs;
11241         if (i40e_enabled_xdp_vsi(vsi)) {
11242                 vsi->xdp_rings = next_rings;
11243                 next_rings += vsi->alloc_queue_pairs;
11244         }
11245         vsi->rx_rings = next_rings;
11246
11247         if (alloc_qvectors) {
11248                 /* allocate memory for q_vector pointers */
11249                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
11250                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
11251                 if (!vsi->q_vectors) {
11252                         ret = -ENOMEM;
11253                         goto err_vectors;
11254                 }
11255         }
11256         return ret;
11257
11258 err_vectors:
11259         kfree(vsi->tx_rings);
11260         return ret;
11261 }
11262
11263 /**
11264  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
11265  * @pf: board private structure
11266  * @type: type of VSI
11267  *
11268  * On error: returns error code (negative)
11269  * On success: returns vsi index in PF (positive)
11270  **/
11271 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
11272 {
11273         int ret = -ENODEV;
11274         struct i40e_vsi *vsi;
11275         int vsi_idx;
11276         int i;
11277
11278         /* Need to protect the allocation of the VSIs at the PF level */
11279         mutex_lock(&pf->switch_mutex);
11280
11281         /* VSI list may be fragmented if VSI creation/destruction has
11282          * been happening.  We can afford to do a quick scan to look
11283          * for any free VSIs in the list.
11284          *
11285          * find next empty vsi slot, looping back around if necessary
11286          */
11287         i = pf->next_vsi;
11288         while (i < pf->num_alloc_vsi && pf->vsi[i])
11289                 i++;
11290         if (i >= pf->num_alloc_vsi) {
11291                 i = 0;
11292                 while (i < pf->next_vsi && pf->vsi[i])
11293                         i++;
11294         }
11295
11296         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
11297                 vsi_idx = i;             /* Found one! */
11298         } else {
11299                 ret = -ENODEV;
11300                 goto unlock_pf;  /* out of VSI slots! */
11301         }
11302         pf->next_vsi = ++i;
11303
11304         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
11305         if (!vsi) {
11306                 ret = -ENOMEM;
11307                 goto unlock_pf;
11308         }
11309         vsi->type = type;
11310         vsi->back = pf;
11311         set_bit(__I40E_VSI_DOWN, vsi->state);
11312         vsi->flags = 0;
11313         vsi->idx = vsi_idx;
11314         vsi->int_rate_limit = 0;
11315         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
11316                                 pf->rss_table_size : 64;
11317         vsi->netdev_registered = false;
11318         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
11319         hash_init(vsi->mac_filter_hash);
11320         vsi->irqs_ready = false;
11321
11322         if (type == I40E_VSI_MAIN) {
11323                 vsi->af_xdp_zc_qps = bitmap_zalloc(pf->num_lan_qps, GFP_KERNEL);
11324                 if (!vsi->af_xdp_zc_qps)
11325                         goto err_rings;
11326         }
11327
11328         ret = i40e_set_num_rings_in_vsi(vsi);
11329         if (ret)
11330                 goto err_rings;
11331
11332         ret = i40e_vsi_alloc_arrays(vsi, true);
11333         if (ret)
11334                 goto err_rings;
11335
11336         /* Setup default MSIX irq handler for VSI */
11337         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
11338
11339         /* Initialize VSI lock */
11340         spin_lock_init(&vsi->mac_filter_hash_lock);
11341         pf->vsi[vsi_idx] = vsi;
11342         ret = vsi_idx;
11343         goto unlock_pf;
11344
11345 err_rings:
11346         bitmap_free(vsi->af_xdp_zc_qps);
11347         pf->next_vsi = i - 1;
11348         kfree(vsi);
11349 unlock_pf:
11350         mutex_unlock(&pf->switch_mutex);
11351         return ret;
11352 }
11353
11354 /**
11355  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
11356  * @vsi: VSI pointer
11357  * @free_qvectors: a bool to specify if q_vectors need to be freed.
11358  *
11359  * On error: returns error code (negative)
11360  * On success: returns 0
11361  **/
11362 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
11363 {
11364         /* free the ring and vector containers */
11365         if (free_qvectors) {
11366                 kfree(vsi->q_vectors);
11367                 vsi->q_vectors = NULL;
11368         }
11369         kfree(vsi->tx_rings);
11370         vsi->tx_rings = NULL;
11371         vsi->rx_rings = NULL;
11372         vsi->xdp_rings = NULL;
11373 }
11374
11375 /**
11376  * i40e_clear_rss_config_user - clear the user configured RSS hash keys
11377  * and lookup table
11378  * @vsi: Pointer to VSI structure
11379  */
11380 static void i40e_clear_rss_config_user(struct i40e_vsi *vsi)
11381 {
11382         if (!vsi)
11383                 return;
11384
11385         kfree(vsi->rss_hkey_user);
11386         vsi->rss_hkey_user = NULL;
11387
11388         kfree(vsi->rss_lut_user);
11389         vsi->rss_lut_user = NULL;
11390 }
11391
11392 /**
11393  * i40e_vsi_clear - Deallocate the VSI provided
11394  * @vsi: the VSI being un-configured
11395  **/
11396 static int i40e_vsi_clear(struct i40e_vsi *vsi)
11397 {
11398         struct i40e_pf *pf;
11399
11400         if (!vsi)
11401                 return 0;
11402
11403         if (!vsi->back)
11404                 goto free_vsi;
11405         pf = vsi->back;
11406
11407         mutex_lock(&pf->switch_mutex);
11408         if (!pf->vsi[vsi->idx]) {
11409                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](type %d)\n",
11410                         vsi->idx, vsi->idx, vsi->type);
11411                 goto unlock_vsi;
11412         }
11413
11414         if (pf->vsi[vsi->idx] != vsi) {
11415                 dev_err(&pf->pdev->dev,
11416                         "pf->vsi[%d](type %d) != vsi[%d](type %d): no free!\n",
11417                         pf->vsi[vsi->idx]->idx,
11418                         pf->vsi[vsi->idx]->type,
11419                         vsi->idx, vsi->type);
11420                 goto unlock_vsi;
11421         }
11422
11423         /* updates the PF for this cleared vsi */
11424         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
11425         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
11426
11427         bitmap_free(vsi->af_xdp_zc_qps);
11428         i40e_vsi_free_arrays(vsi, true);
11429         i40e_clear_rss_config_user(vsi);
11430
11431         pf->vsi[vsi->idx] = NULL;
11432         if (vsi->idx < pf->next_vsi)
11433                 pf->next_vsi = vsi->idx;
11434
11435 unlock_vsi:
11436         mutex_unlock(&pf->switch_mutex);
11437 free_vsi:
11438         kfree(vsi);
11439
11440         return 0;
11441 }
11442
11443 /**
11444  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
11445  * @vsi: the VSI being cleaned
11446  **/
11447 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
11448 {
11449         int i;
11450
11451         if (vsi->tx_rings && vsi->tx_rings[0]) {
11452                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
11453                         kfree_rcu(vsi->tx_rings[i], rcu);
11454                         WRITE_ONCE(vsi->tx_rings[i], NULL);
11455                         WRITE_ONCE(vsi->rx_rings[i], NULL);
11456                         if (vsi->xdp_rings)
11457                                 WRITE_ONCE(vsi->xdp_rings[i], NULL);
11458                 }
11459         }
11460 }
11461
11462 /**
11463  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
11464  * @vsi: the VSI being configured
11465  **/
11466 static int i40e_alloc_rings(struct i40e_vsi *vsi)
11467 {
11468         int i, qpv = i40e_enabled_xdp_vsi(vsi) ? 3 : 2;
11469         struct i40e_pf *pf = vsi->back;
11470         struct i40e_ring *ring;
11471
11472         /* Set basic values in the rings to be used later during open() */
11473         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
11474                 /* allocate space for both Tx and Rx in one shot */
11475                 ring = kcalloc(qpv, sizeof(struct i40e_ring), GFP_KERNEL);
11476                 if (!ring)
11477                         goto err_out;
11478
11479                 ring->queue_index = i;
11480                 ring->reg_idx = vsi->base_queue + i;
11481                 ring->ring_active = false;
11482                 ring->vsi = vsi;
11483                 ring->netdev = vsi->netdev;
11484                 ring->dev = &pf->pdev->dev;
11485                 ring->count = vsi->num_tx_desc;
11486                 ring->size = 0;
11487                 ring->dcb_tc = 0;
11488                 if (vsi->back->hw_features & I40E_HW_WB_ON_ITR_CAPABLE)
11489                         ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
11490                 ring->itr_setting = pf->tx_itr_default;
11491                 WRITE_ONCE(vsi->tx_rings[i], ring++);
11492
11493                 if (!i40e_enabled_xdp_vsi(vsi))
11494                         goto setup_rx;
11495
11496                 ring->queue_index = vsi->alloc_queue_pairs + i;
11497                 ring->reg_idx = vsi->base_queue + ring->queue_index;
11498                 ring->ring_active = false;
11499                 ring->vsi = vsi;
11500                 ring->netdev = NULL;
11501                 ring->dev = &pf->pdev->dev;
11502                 ring->count = vsi->num_tx_desc;
11503                 ring->size = 0;
11504                 ring->dcb_tc = 0;
11505                 if (vsi->back->hw_features & I40E_HW_WB_ON_ITR_CAPABLE)
11506                         ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
11507                 set_ring_xdp(ring);
11508                 ring->itr_setting = pf->tx_itr_default;
11509                 WRITE_ONCE(vsi->xdp_rings[i], ring++);
11510
11511 setup_rx:
11512                 ring->queue_index = i;
11513                 ring->reg_idx = vsi->base_queue + i;
11514                 ring->ring_active = false;
11515                 ring->vsi = vsi;
11516                 ring->netdev = vsi->netdev;
11517                 ring->dev = &pf->pdev->dev;
11518                 ring->count = vsi->num_rx_desc;
11519                 ring->size = 0;
11520                 ring->dcb_tc = 0;
11521                 ring->itr_setting = pf->rx_itr_default;
11522                 WRITE_ONCE(vsi->rx_rings[i], ring);
11523         }
11524
11525         return 0;
11526
11527 err_out:
11528         i40e_vsi_clear_rings(vsi);
11529         return -ENOMEM;
11530 }
11531
11532 /**
11533  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
11534  * @pf: board private structure
11535  * @vectors: the number of MSI-X vectors to request
11536  *
11537  * Returns the number of vectors reserved, or error
11538  **/
11539 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
11540 {
11541         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
11542                                         I40E_MIN_MSIX, vectors);
11543         if (vectors < 0) {
11544                 dev_info(&pf->pdev->dev,
11545                          "MSI-X vector reservation failed: %d\n", vectors);
11546                 vectors = 0;
11547         }
11548
11549         return vectors;
11550 }
11551
11552 /**
11553  * i40e_init_msix - Setup the MSIX capability
11554  * @pf: board private structure
11555  *
11556  * Work with the OS to set up the MSIX vectors needed.
11557  *
11558  * Returns the number of vectors reserved or negative on failure
11559  **/
11560 static int i40e_init_msix(struct i40e_pf *pf)
11561 {
11562         struct i40e_hw *hw = &pf->hw;
11563         int cpus, extra_vectors;
11564         int vectors_left;
11565         int v_budget, i;
11566         int v_actual;
11567         int iwarp_requested = 0;
11568
11569         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
11570                 return -ENODEV;
11571
11572         /* The number of vectors we'll request will be comprised of:
11573          *   - Add 1 for "other" cause for Admin Queue events, etc.
11574          *   - The number of LAN queue pairs
11575          *      - Queues being used for RSS.
11576          *              We don't need as many as max_rss_size vectors.
11577          *              use rss_size instead in the calculation since that
11578          *              is governed by number of cpus in the system.
11579          *      - assumes symmetric Tx/Rx pairing
11580          *   - The number of VMDq pairs
11581          *   - The CPU count within the NUMA node if iWARP is enabled
11582          * Once we count this up, try the request.
11583          *
11584          * If we can't get what we want, we'll simplify to nearly nothing
11585          * and try again.  If that still fails, we punt.
11586          */
11587         vectors_left = hw->func_caps.num_msix_vectors;
11588         v_budget = 0;
11589
11590         /* reserve one vector for miscellaneous handler */
11591         if (vectors_left) {
11592                 v_budget++;
11593                 vectors_left--;
11594         }
11595
11596         /* reserve some vectors for the main PF traffic queues. Initially we
11597          * only reserve at most 50% of the available vectors, in the case that
11598          * the number of online CPUs is large. This ensures that we can enable
11599          * extra features as well. Once we've enabled the other features, we
11600          * will use any remaining vectors to reach as close as we can to the
11601          * number of online CPUs.
11602          */
11603         cpus = num_online_cpus();
11604         pf->num_lan_msix = min_t(int, cpus, vectors_left / 2);
11605         vectors_left -= pf->num_lan_msix;
11606
11607         /* reserve one vector for sideband flow director */
11608         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
11609                 if (vectors_left) {
11610                         pf->num_fdsb_msix = 1;
11611                         v_budget++;
11612                         vectors_left--;
11613                 } else {
11614                         pf->num_fdsb_msix = 0;
11615                 }
11616         }
11617
11618         /* can we reserve enough for iWARP? */
11619         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11620                 iwarp_requested = pf->num_iwarp_msix;
11621
11622                 if (!vectors_left)
11623                         pf->num_iwarp_msix = 0;
11624                 else if (vectors_left < pf->num_iwarp_msix)
11625                         pf->num_iwarp_msix = 1;
11626                 v_budget += pf->num_iwarp_msix;
11627                 vectors_left -= pf->num_iwarp_msix;
11628         }
11629
11630         /* any vectors left over go for VMDq support */
11631         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
11632                 if (!vectors_left) {
11633                         pf->num_vmdq_msix = 0;
11634                         pf->num_vmdq_qps = 0;
11635                 } else {
11636                         int vmdq_vecs_wanted =
11637                                 pf->num_vmdq_vsis * pf->num_vmdq_qps;
11638                         int vmdq_vecs =
11639                                 min_t(int, vectors_left, vmdq_vecs_wanted);
11640
11641                         /* if we're short on vectors for what's desired, we limit
11642                          * the queues per vmdq.  If this is still more than are
11643                          * available, the user will need to change the number of
11644                          * queues/vectors used by the PF later with the ethtool
11645                          * channels command
11646                          */
11647                         if (vectors_left < vmdq_vecs_wanted) {
11648                                 pf->num_vmdq_qps = 1;
11649                                 vmdq_vecs_wanted = pf->num_vmdq_vsis;
11650                                 vmdq_vecs = min_t(int,
11651                                                   vectors_left,
11652                                                   vmdq_vecs_wanted);
11653                         }
11654                         pf->num_vmdq_msix = pf->num_vmdq_qps;
11655
11656                         v_budget += vmdq_vecs;
11657                         vectors_left -= vmdq_vecs;
11658                 }
11659         }
11660
11661         /* On systems with a large number of SMP cores, we previously limited
11662          * the number of vectors for num_lan_msix to be at most 50% of the
11663          * available vectors, to allow for other features. Now, we add back
11664          * the remaining vectors. However, we ensure that the total
11665          * num_lan_msix will not exceed num_online_cpus(). To do this, we
11666          * calculate the number of vectors we can add without going over the
11667          * cap of CPUs. For systems with a small number of CPUs this will be
11668          * zero.
11669          */
11670         extra_vectors = min_t(int, cpus - pf->num_lan_msix, vectors_left);
11671         pf->num_lan_msix += extra_vectors;
11672         vectors_left -= extra_vectors;
11673
11674         WARN(vectors_left < 0,
11675              "Calculation of remaining vectors underflowed. This is an accounting bug when determining total MSI-X vectors.\n");
11676
11677         v_budget += pf->num_lan_msix;
11678         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
11679                                    GFP_KERNEL);
11680         if (!pf->msix_entries)
11681                 return -ENOMEM;
11682
11683         for (i = 0; i < v_budget; i++)
11684                 pf->msix_entries[i].entry = i;
11685         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
11686
11687         if (v_actual < I40E_MIN_MSIX) {
11688                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
11689                 kfree(pf->msix_entries);
11690                 pf->msix_entries = NULL;
11691                 pci_disable_msix(pf->pdev);
11692                 return -ENODEV;
11693
11694         } else if (v_actual == I40E_MIN_MSIX) {
11695                 /* Adjust for minimal MSIX use */
11696                 pf->num_vmdq_vsis = 0;
11697                 pf->num_vmdq_qps = 0;
11698                 pf->num_lan_qps = 1;
11699                 pf->num_lan_msix = 1;
11700
11701         } else if (v_actual != v_budget) {
11702                 /* If we have limited resources, we will start with no vectors
11703                  * for the special features and then allocate vectors to some
11704                  * of these features based on the policy and at the end disable
11705                  * the features that did not get any vectors.
11706                  */
11707                 int vec;
11708
11709                 dev_info(&pf->pdev->dev,
11710                          "MSI-X vector limit reached with %d, wanted %d, attempting to redistribute vectors\n",
11711                          v_actual, v_budget);
11712                 /* reserve the misc vector */
11713                 vec = v_actual - 1;
11714
11715                 /* Scale vector usage down */
11716                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
11717                 pf->num_vmdq_vsis = 1;
11718                 pf->num_vmdq_qps = 1;
11719
11720                 /* partition out the remaining vectors */
11721                 switch (vec) {
11722                 case 2:
11723                         pf->num_lan_msix = 1;
11724                         break;
11725                 case 3:
11726                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11727                                 pf->num_lan_msix = 1;
11728                                 pf->num_iwarp_msix = 1;
11729                         } else {
11730                                 pf->num_lan_msix = 2;
11731                         }
11732                         break;
11733                 default:
11734                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11735                                 pf->num_iwarp_msix = min_t(int, (vec / 3),
11736                                                  iwarp_requested);
11737                                 pf->num_vmdq_vsis = min_t(int, (vec / 3),
11738                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
11739                         } else {
11740                                 pf->num_vmdq_vsis = min_t(int, (vec / 2),
11741                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
11742                         }
11743                         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
11744                                 pf->num_fdsb_msix = 1;
11745                                 vec--;
11746                         }
11747                         pf->num_lan_msix = min_t(int,
11748                                (vec - (pf->num_iwarp_msix + pf->num_vmdq_vsis)),
11749                                                               pf->num_lan_msix);
11750                         pf->num_lan_qps = pf->num_lan_msix;
11751                         break;
11752                 }
11753         }
11754
11755         if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
11756             (pf->num_fdsb_msix == 0)) {
11757                 dev_info(&pf->pdev->dev, "Sideband Flowdir disabled, not enough MSI-X vectors\n");
11758                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
11759                 pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
11760         }
11761         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
11762             (pf->num_vmdq_msix == 0)) {
11763                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
11764                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
11765         }
11766
11767         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
11768             (pf->num_iwarp_msix == 0)) {
11769                 dev_info(&pf->pdev->dev, "IWARP disabled, not enough MSI-X vectors\n");
11770                 pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
11771         }
11772         i40e_debug(&pf->hw, I40E_DEBUG_INIT,
11773                    "MSI-X vector distribution: PF %d, VMDq %d, FDSB %d, iWARP %d\n",
11774                    pf->num_lan_msix,
11775                    pf->num_vmdq_msix * pf->num_vmdq_vsis,
11776                    pf->num_fdsb_msix,
11777                    pf->num_iwarp_msix);
11778
11779         return v_actual;
11780 }
11781
11782 /**
11783  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
11784  * @vsi: the VSI being configured
11785  * @v_idx: index of the vector in the vsi struct
11786  *
11787  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
11788  **/
11789 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
11790 {
11791         struct i40e_q_vector *q_vector;
11792
11793         /* allocate q_vector */
11794         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
11795         if (!q_vector)
11796                 return -ENOMEM;
11797
11798         q_vector->vsi = vsi;
11799         q_vector->v_idx = v_idx;
11800         cpumask_copy(&q_vector->affinity_mask, cpu_possible_mask);
11801
11802         if (vsi->netdev)
11803                 netif_napi_add(vsi->netdev, &q_vector->napi,
11804                                i40e_napi_poll, NAPI_POLL_WEIGHT);
11805
11806         /* tie q_vector and vsi together */
11807         vsi->q_vectors[v_idx] = q_vector;
11808
11809         return 0;
11810 }
11811
11812 /**
11813  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
11814  * @vsi: the VSI being configured
11815  *
11816  * We allocate one q_vector per queue interrupt.  If allocation fails we
11817  * return -ENOMEM.
11818  **/
11819 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
11820 {
11821         struct i40e_pf *pf = vsi->back;
11822         int err, v_idx, num_q_vectors;
11823
11824         /* if not MSIX, give the one vector only to the LAN VSI */
11825         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
11826                 num_q_vectors = vsi->num_q_vectors;
11827         else if (vsi == pf->vsi[pf->lan_vsi])
11828                 num_q_vectors = 1;
11829         else
11830                 return -EINVAL;
11831
11832         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
11833                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
11834                 if (err)
11835                         goto err_out;
11836         }
11837
11838         return 0;
11839
11840 err_out:
11841         while (v_idx--)
11842                 i40e_free_q_vector(vsi, v_idx);
11843
11844         return err;
11845 }
11846
11847 /**
11848  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
11849  * @pf: board private structure to initialize
11850  **/
11851 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
11852 {
11853         int vectors = 0;
11854         ssize_t size;
11855
11856         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
11857                 vectors = i40e_init_msix(pf);
11858                 if (vectors < 0) {
11859                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
11860                                        I40E_FLAG_IWARP_ENABLED  |
11861                                        I40E_FLAG_RSS_ENABLED    |
11862                                        I40E_FLAG_DCB_CAPABLE    |
11863                                        I40E_FLAG_DCB_ENABLED    |
11864                                        I40E_FLAG_SRIOV_ENABLED  |
11865                                        I40E_FLAG_FD_SB_ENABLED  |
11866                                        I40E_FLAG_FD_ATR_ENABLED |
11867                                        I40E_FLAG_VMDQ_ENABLED);
11868                         pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
11869
11870                         /* rework the queue expectations without MSIX */
11871                         i40e_determine_queue_usage(pf);
11872                 }
11873         }
11874
11875         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
11876             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
11877                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
11878                 vectors = pci_enable_msi(pf->pdev);
11879                 if (vectors < 0) {
11880                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
11881                                  vectors);
11882                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
11883                 }
11884                 vectors = 1;  /* one MSI or Legacy vector */
11885         }
11886
11887         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
11888                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
11889
11890         /* set up vector assignment tracking */
11891         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
11892         pf->irq_pile = kzalloc(size, GFP_KERNEL);
11893         if (!pf->irq_pile)
11894                 return -ENOMEM;
11895
11896         pf->irq_pile->num_entries = vectors;
11897
11898         /* track first vector for misc interrupts, ignore return */
11899         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
11900
11901         return 0;
11902 }
11903
11904 /**
11905  * i40e_restore_interrupt_scheme - Restore the interrupt scheme
11906  * @pf: private board data structure
11907  *
11908  * Restore the interrupt scheme that was cleared when we suspended the
11909  * device. This should be called during resume to re-allocate the q_vectors
11910  * and reacquire IRQs.
11911  */
11912 static int i40e_restore_interrupt_scheme(struct i40e_pf *pf)
11913 {
11914         int err, i;
11915
11916         /* We cleared the MSI and MSI-X flags when disabling the old interrupt
11917          * scheme. We need to re-enabled them here in order to attempt to
11918          * re-acquire the MSI or MSI-X vectors
11919          */
11920         pf->flags |= (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
11921
11922         err = i40e_init_interrupt_scheme(pf);
11923         if (err)
11924                 return err;
11925
11926         /* Now that we've re-acquired IRQs, we need to remap the vectors and
11927          * rings together again.
11928          */
11929         for (i = 0; i < pf->num_alloc_vsi; i++) {
11930                 if (pf->vsi[i]) {
11931                         err = i40e_vsi_alloc_q_vectors(pf->vsi[i]);
11932                         if (err)
11933                                 goto err_unwind;
11934                         i40e_vsi_map_rings_to_vectors(pf->vsi[i]);
11935                 }
11936         }
11937
11938         err = i40e_setup_misc_vector(pf);
11939         if (err)
11940                 goto err_unwind;
11941
11942         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
11943                 i40e_client_update_msix_info(pf);
11944
11945         return 0;
11946
11947 err_unwind:
11948         while (i--) {
11949                 if (pf->vsi[i])
11950                         i40e_vsi_free_q_vectors(pf->vsi[i]);
11951         }
11952
11953         return err;
11954 }
11955
11956 /**
11957  * i40e_setup_misc_vector_for_recovery_mode - Setup the misc vector to handle
11958  * non queue events in recovery mode
11959  * @pf: board private structure
11960  *
11961  * This sets up the handler for MSIX 0 or MSI/legacy, which is used to manage
11962  * the non-queue interrupts, e.g. AdminQ and errors in recovery mode.
11963  * This is handled differently than in recovery mode since no Tx/Rx resources
11964  * are being allocated.
11965  **/
11966 static int i40e_setup_misc_vector_for_recovery_mode(struct i40e_pf *pf)
11967 {
11968         int err;
11969
11970         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
11971                 err = i40e_setup_misc_vector(pf);
11972
11973                 if (err) {
11974                         dev_info(&pf->pdev->dev,
11975                                  "MSI-X misc vector request failed, error %d\n",
11976                                  err);
11977                         return err;
11978                 }
11979         } else {
11980                 u32 flags = pf->flags & I40E_FLAG_MSI_ENABLED ? 0 : IRQF_SHARED;
11981
11982                 err = request_irq(pf->pdev->irq, i40e_intr, flags,
11983                                   pf->int_name, pf);
11984
11985                 if (err) {
11986                         dev_info(&pf->pdev->dev,
11987                                  "MSI/legacy misc vector request failed, error %d\n",
11988                                  err);
11989                         return err;
11990                 }
11991                 i40e_enable_misc_int_causes(pf);
11992                 i40e_irq_dynamic_enable_icr0(pf);
11993         }
11994
11995         return 0;
11996 }
11997
11998 /**
11999  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
12000  * @pf: board private structure
12001  *
12002  * This sets up the handler for MSIX 0, which is used to manage the
12003  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
12004  * when in MSI or Legacy interrupt mode.
12005  **/
12006 static int i40e_setup_misc_vector(struct i40e_pf *pf)
12007 {
12008         struct i40e_hw *hw = &pf->hw;
12009         int err = 0;
12010
12011         /* Only request the IRQ once, the first time through. */
12012         if (!test_and_set_bit(__I40E_MISC_IRQ_REQUESTED, pf->state)) {
12013                 err = request_irq(pf->msix_entries[0].vector,
12014                                   i40e_intr, 0, pf->int_name, pf);
12015                 if (err) {
12016                         clear_bit(__I40E_MISC_IRQ_REQUESTED, pf->state);
12017                         dev_info(&pf->pdev->dev,
12018                                  "request_irq for %s failed: %d\n",
12019                                  pf->int_name, err);
12020                         return -EFAULT;
12021                 }
12022         }
12023
12024         i40e_enable_misc_int_causes(pf);
12025
12026         /* associate no queues to the misc vector */
12027         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
12028         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K >> 1);
12029
12030         i40e_flush(hw);
12031
12032         i40e_irq_dynamic_enable_icr0(pf);
12033
12034         return err;
12035 }
12036
12037 /**
12038  * i40e_get_rss_aq - Get RSS keys and lut by using AQ commands
12039  * @vsi: Pointer to vsi structure
12040  * @seed: Buffter to store the hash keys
12041  * @lut: Buffer to store the lookup table entries
12042  * @lut_size: Size of buffer to store the lookup table entries
12043  *
12044  * Return 0 on success, negative on failure
12045  */
12046 static int i40e_get_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
12047                            u8 *lut, u16 lut_size)
12048 {
12049         struct i40e_pf *pf = vsi->back;
12050         struct i40e_hw *hw = &pf->hw;
12051         int ret = 0;
12052
12053         if (seed) {
12054                 ret = i40e_aq_get_rss_key(hw, vsi->id,
12055                         (struct i40e_aqc_get_set_rss_key_data *)seed);
12056                 if (ret) {
12057                         dev_info(&pf->pdev->dev,
12058                                  "Cannot get RSS key, err %s aq_err %s\n",
12059                                  i40e_stat_str(&pf->hw, ret),
12060                                  i40e_aq_str(&pf->hw,
12061                                              pf->hw.aq.asq_last_status));
12062                         return ret;
12063                 }
12064         }
12065
12066         if (lut) {
12067                 bool pf_lut = vsi->type == I40E_VSI_MAIN;
12068
12069                 ret = i40e_aq_get_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
12070                 if (ret) {
12071                         dev_info(&pf->pdev->dev,
12072                                  "Cannot get RSS lut, err %s aq_err %s\n",
12073                                  i40e_stat_str(&pf->hw, ret),
12074                                  i40e_aq_str(&pf->hw,
12075                                              pf->hw.aq.asq_last_status));
12076                         return ret;
12077                 }
12078         }
12079
12080         return ret;
12081 }
12082
12083 /**
12084  * i40e_config_rss_reg - Configure RSS keys and lut by writing registers
12085  * @vsi: Pointer to vsi structure
12086  * @seed: RSS hash seed
12087  * @lut: Lookup table
12088  * @lut_size: Lookup table size
12089  *
12090  * Returns 0 on success, negative on failure
12091  **/
12092 static int i40e_config_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
12093                                const u8 *lut, u16 lut_size)
12094 {
12095         struct i40e_pf *pf = vsi->back;
12096         struct i40e_hw *hw = &pf->hw;
12097         u16 vf_id = vsi->vf_id;
12098         u8 i;
12099
12100         /* Fill out hash function seed */
12101         if (seed) {
12102                 u32 *seed_dw = (u32 *)seed;
12103
12104                 if (vsi->type == I40E_VSI_MAIN) {
12105                         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
12106                                 wr32(hw, I40E_PFQF_HKEY(i), seed_dw[i]);
12107                 } else if (vsi->type == I40E_VSI_SRIOV) {
12108                         for (i = 0; i <= I40E_VFQF_HKEY1_MAX_INDEX; i++)
12109                                 wr32(hw, I40E_VFQF_HKEY1(i, vf_id), seed_dw[i]);
12110                 } else {
12111                         dev_err(&pf->pdev->dev, "Cannot set RSS seed - invalid VSI type\n");
12112                 }
12113         }
12114
12115         if (lut) {
12116                 u32 *lut_dw = (u32 *)lut;
12117
12118                 if (vsi->type == I40E_VSI_MAIN) {
12119                         if (lut_size != I40E_HLUT_ARRAY_SIZE)
12120                                 return -EINVAL;
12121                         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
12122                                 wr32(hw, I40E_PFQF_HLUT(i), lut_dw[i]);
12123                 } else if (vsi->type == I40E_VSI_SRIOV) {
12124                         if (lut_size != I40E_VF_HLUT_ARRAY_SIZE)
12125                                 return -EINVAL;
12126                         for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
12127                                 wr32(hw, I40E_VFQF_HLUT1(i, vf_id), lut_dw[i]);
12128                 } else {
12129                         dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
12130                 }
12131         }
12132         i40e_flush(hw);
12133
12134         return 0;
12135 }
12136
12137 /**
12138  * i40e_get_rss_reg - Get the RSS keys and lut by reading registers
12139  * @vsi: Pointer to VSI structure
12140  * @seed: Buffer to store the keys
12141  * @lut: Buffer to store the lookup table entries
12142  * @lut_size: Size of buffer to store the lookup table entries
12143  *
12144  * Returns 0 on success, negative on failure
12145  */
12146 static int i40e_get_rss_reg(struct i40e_vsi *vsi, u8 *seed,
12147                             u8 *lut, u16 lut_size)
12148 {
12149         struct i40e_pf *pf = vsi->back;
12150         struct i40e_hw *hw = &pf->hw;
12151         u16 i;
12152
12153         if (seed) {
12154                 u32 *seed_dw = (u32 *)seed;
12155
12156                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
12157                         seed_dw[i] = i40e_read_rx_ctl(hw, I40E_PFQF_HKEY(i));
12158         }
12159         if (lut) {
12160                 u32 *lut_dw = (u32 *)lut;
12161
12162                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
12163                         return -EINVAL;
12164                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
12165                         lut_dw[i] = rd32(hw, I40E_PFQF_HLUT(i));
12166         }
12167
12168         return 0;
12169 }
12170
12171 /**
12172  * i40e_config_rss - Configure RSS keys and lut
12173  * @vsi: Pointer to VSI structure
12174  * @seed: RSS hash seed
12175  * @lut: Lookup table
12176  * @lut_size: Lookup table size
12177  *
12178  * Returns 0 on success, negative on failure
12179  */
12180 int i40e_config_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
12181 {
12182         struct i40e_pf *pf = vsi->back;
12183
12184         if (pf->hw_features & I40E_HW_RSS_AQ_CAPABLE)
12185                 return i40e_config_rss_aq(vsi, seed, lut, lut_size);
12186         else
12187                 return i40e_config_rss_reg(vsi, seed, lut, lut_size);
12188 }
12189
12190 /**
12191  * i40e_get_rss - Get RSS keys and lut
12192  * @vsi: Pointer to VSI structure
12193  * @seed: Buffer to store the keys
12194  * @lut: Buffer to store the lookup table entries
12195  * @lut_size: Size of buffer to store the lookup table entries
12196  *
12197  * Returns 0 on success, negative on failure
12198  */
12199 int i40e_get_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
12200 {
12201         struct i40e_pf *pf = vsi->back;
12202
12203         if (pf->hw_features & I40E_HW_RSS_AQ_CAPABLE)
12204                 return i40e_get_rss_aq(vsi, seed, lut, lut_size);
12205         else
12206                 return i40e_get_rss_reg(vsi, seed, lut, lut_size);
12207 }
12208
12209 /**
12210  * i40e_fill_rss_lut - Fill the RSS lookup table with default values
12211  * @pf: Pointer to board private structure
12212  * @lut: Lookup table
12213  * @rss_table_size: Lookup table size
12214  * @rss_size: Range of queue number for hashing
12215  */
12216 void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
12217                        u16 rss_table_size, u16 rss_size)
12218 {
12219         u16 i;
12220
12221         for (i = 0; i < rss_table_size; i++)
12222                 lut[i] = i % rss_size;
12223 }
12224
12225 /**
12226  * i40e_pf_config_rss - Prepare for RSS if used
12227  * @pf: board private structure
12228  **/
12229 static int i40e_pf_config_rss(struct i40e_pf *pf)
12230 {
12231         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
12232         u8 seed[I40E_HKEY_ARRAY_SIZE];
12233         u8 *lut;
12234         struct i40e_hw *hw = &pf->hw;
12235         u32 reg_val;
12236         u64 hena;
12237         int ret;
12238
12239         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
12240         hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |
12241                 ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);
12242         hena |= i40e_pf_get_default_rss_hena(pf);
12243
12244         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena);
12245         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
12246
12247         /* Determine the RSS table size based on the hardware capabilities */
12248         reg_val = i40e_read_rx_ctl(hw, I40E_PFQF_CTL_0);
12249         reg_val = (pf->rss_table_size == 512) ?
12250                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
12251                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
12252         i40e_write_rx_ctl(hw, I40E_PFQF_CTL_0, reg_val);
12253
12254         /* Determine the RSS size of the VSI */
12255         if (!vsi->rss_size) {
12256                 u16 qcount;
12257                 /* If the firmware does something weird during VSI init, we
12258                  * could end up with zero TCs. Check for that to avoid
12259                  * divide-by-zero. It probably won't pass traffic, but it also
12260                  * won't panic.
12261                  */
12262                 qcount = vsi->num_queue_pairs /
12263                          (vsi->tc_config.numtc ? vsi->tc_config.numtc : 1);
12264                 vsi->rss_size = min_t(int, pf->alloc_rss_size, qcount);
12265         }
12266         if (!vsi->rss_size)
12267                 return -EINVAL;
12268
12269         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
12270         if (!lut)
12271                 return -ENOMEM;
12272
12273         /* Use user configured lut if there is one, otherwise use default */
12274         if (vsi->rss_lut_user)
12275                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
12276         else
12277                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
12278
12279         /* Use user configured hash key if there is one, otherwise
12280          * use default.
12281          */
12282         if (vsi->rss_hkey_user)
12283                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
12284         else
12285                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
12286         ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
12287         kfree(lut);
12288
12289         return ret;
12290 }
12291
12292 /**
12293  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
12294  * @pf: board private structure
12295  * @queue_count: the requested queue count for rss.
12296  *
12297  * returns 0 if rss is not enabled, if enabled returns the final rss queue
12298  * count which may be different from the requested queue count.
12299  * Note: expects to be called while under rtnl_lock()
12300  **/
12301 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
12302 {
12303         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
12304         int new_rss_size;
12305
12306         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
12307                 return 0;
12308
12309         queue_count = min_t(int, queue_count, num_online_cpus());
12310         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
12311
12312         if (queue_count != vsi->num_queue_pairs) {
12313                 u16 qcount;
12314
12315                 vsi->req_queue_pairs = queue_count;
12316                 i40e_prep_for_reset(pf);
12317                 if (test_bit(__I40E_IN_REMOVE, pf->state))
12318                         return pf->alloc_rss_size;
12319
12320                 pf->alloc_rss_size = new_rss_size;
12321
12322                 i40e_reset_and_rebuild(pf, true, true);
12323
12324                 /* Discard the user configured hash keys and lut, if less
12325                  * queues are enabled.
12326                  */
12327                 if (queue_count < vsi->rss_size) {
12328                         i40e_clear_rss_config_user(vsi);
12329                         dev_dbg(&pf->pdev->dev,
12330                                 "discard user configured hash keys and lut\n");
12331                 }
12332
12333                 /* Reset vsi->rss_size, as number of enabled queues changed */
12334                 qcount = vsi->num_queue_pairs / vsi->tc_config.numtc;
12335                 vsi->rss_size = min_t(int, pf->alloc_rss_size, qcount);
12336
12337                 i40e_pf_config_rss(pf);
12338         }
12339         dev_info(&pf->pdev->dev, "User requested queue count/HW max RSS count:  %d/%d\n",
12340                  vsi->req_queue_pairs, pf->rss_size_max);
12341         return pf->alloc_rss_size;
12342 }
12343
12344 /**
12345  * i40e_get_partition_bw_setting - Retrieve BW settings for this PF partition
12346  * @pf: board private structure
12347  **/
12348 i40e_status i40e_get_partition_bw_setting(struct i40e_pf *pf)
12349 {
12350         i40e_status status;
12351         bool min_valid, max_valid;
12352         u32 max_bw, min_bw;
12353
12354         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
12355                                            &min_valid, &max_valid);
12356
12357         if (!status) {
12358                 if (min_valid)
12359                         pf->min_bw = min_bw;
12360                 if (max_valid)
12361                         pf->max_bw = max_bw;
12362         }
12363
12364         return status;
12365 }
12366
12367 /**
12368  * i40e_set_partition_bw_setting - Set BW settings for this PF partition
12369  * @pf: board private structure
12370  **/
12371 i40e_status i40e_set_partition_bw_setting(struct i40e_pf *pf)
12372 {
12373         struct i40e_aqc_configure_partition_bw_data bw_data;
12374         i40e_status status;
12375
12376         memset(&bw_data, 0, sizeof(bw_data));
12377
12378         /* Set the valid bit for this PF */
12379         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
12380         bw_data.max_bw[pf->hw.pf_id] = pf->max_bw & I40E_ALT_BW_VALUE_MASK;
12381         bw_data.min_bw[pf->hw.pf_id] = pf->min_bw & I40E_ALT_BW_VALUE_MASK;
12382
12383         /* Set the new bandwidths */
12384         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
12385
12386         return status;
12387 }
12388
12389 /**
12390  * i40e_commit_partition_bw_setting - Commit BW settings for this PF partition
12391  * @pf: board private structure
12392  **/
12393 i40e_status i40e_commit_partition_bw_setting(struct i40e_pf *pf)
12394 {
12395         /* Commit temporary BW setting to permanent NVM image */
12396         enum i40e_admin_queue_err last_aq_status;
12397         i40e_status ret;
12398         u16 nvm_word;
12399
12400         if (pf->hw.partition_id != 1) {
12401                 dev_info(&pf->pdev->dev,
12402                          "Commit BW only works on partition 1! This is partition %d",
12403                          pf->hw.partition_id);
12404                 ret = I40E_NOT_SUPPORTED;
12405                 goto bw_commit_out;
12406         }
12407
12408         /* Acquire NVM for read access */
12409         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
12410         last_aq_status = pf->hw.aq.asq_last_status;
12411         if (ret) {
12412                 dev_info(&pf->pdev->dev,
12413                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
12414                          i40e_stat_str(&pf->hw, ret),
12415                          i40e_aq_str(&pf->hw, last_aq_status));
12416                 goto bw_commit_out;
12417         }
12418
12419         /* Read word 0x10 of NVM - SW compatibility word 1 */
12420         ret = i40e_aq_read_nvm(&pf->hw,
12421                                I40E_SR_NVM_CONTROL_WORD,
12422                                0x10, sizeof(nvm_word), &nvm_word,
12423                                false, NULL);
12424         /* Save off last admin queue command status before releasing
12425          * the NVM
12426          */
12427         last_aq_status = pf->hw.aq.asq_last_status;
12428         i40e_release_nvm(&pf->hw);
12429         if (ret) {
12430                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
12431                          i40e_stat_str(&pf->hw, ret),
12432                          i40e_aq_str(&pf->hw, last_aq_status));
12433                 goto bw_commit_out;
12434         }
12435
12436         /* Wait a bit for NVM release to complete */
12437         msleep(50);
12438
12439         /* Acquire NVM for write access */
12440         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
12441         last_aq_status = pf->hw.aq.asq_last_status;
12442         if (ret) {
12443                 dev_info(&pf->pdev->dev,
12444                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
12445                          i40e_stat_str(&pf->hw, ret),
12446                          i40e_aq_str(&pf->hw, last_aq_status));
12447                 goto bw_commit_out;
12448         }
12449         /* Write it back out unchanged to initiate update NVM,
12450          * which will force a write of the shadow (alt) RAM to
12451          * the NVM - thus storing the bandwidth values permanently.
12452          */
12453         ret = i40e_aq_update_nvm(&pf->hw,
12454                                  I40E_SR_NVM_CONTROL_WORD,
12455                                  0x10, sizeof(nvm_word),
12456                                  &nvm_word, true, 0, NULL);
12457         /* Save off last admin queue command status before releasing
12458          * the NVM
12459          */
12460         last_aq_status = pf->hw.aq.asq_last_status;
12461         i40e_release_nvm(&pf->hw);
12462         if (ret)
12463                 dev_info(&pf->pdev->dev,
12464                          "BW settings NOT SAVED, err %s aq_err %s\n",
12465                          i40e_stat_str(&pf->hw, ret),
12466                          i40e_aq_str(&pf->hw, last_aq_status));
12467 bw_commit_out:
12468
12469         return ret;
12470 }
12471
12472 /**
12473  * i40e_is_total_port_shutdown_enabled - read NVM and return value
12474  * if total port shutdown feature is enabled for this PF
12475  * @pf: board private structure
12476  **/
12477 static bool i40e_is_total_port_shutdown_enabled(struct i40e_pf *pf)
12478 {
12479 #define I40E_TOTAL_PORT_SHUTDOWN_ENABLED        BIT(4)
12480 #define I40E_FEATURES_ENABLE_PTR                0x2A
12481 #define I40E_CURRENT_SETTING_PTR                0x2B
12482 #define I40E_LINK_BEHAVIOR_WORD_OFFSET          0x2D
12483 #define I40E_LINK_BEHAVIOR_WORD_LENGTH          0x1
12484 #define I40E_LINK_BEHAVIOR_OS_FORCED_ENABLED    BIT(0)
12485 #define I40E_LINK_BEHAVIOR_PORT_BIT_LENGTH      4
12486         i40e_status read_status = I40E_SUCCESS;
12487         u16 sr_emp_sr_settings_ptr = 0;
12488         u16 features_enable = 0;
12489         u16 link_behavior = 0;
12490         bool ret = false;
12491
12492         read_status = i40e_read_nvm_word(&pf->hw,
12493                                          I40E_SR_EMP_SR_SETTINGS_PTR,
12494                                          &sr_emp_sr_settings_ptr);
12495         if (read_status)
12496                 goto err_nvm;
12497         read_status = i40e_read_nvm_word(&pf->hw,
12498                                          sr_emp_sr_settings_ptr +
12499                                          I40E_FEATURES_ENABLE_PTR,
12500                                          &features_enable);
12501         if (read_status)
12502                 goto err_nvm;
12503         if (I40E_TOTAL_PORT_SHUTDOWN_ENABLED & features_enable) {
12504                 read_status = i40e_read_nvm_module_data(&pf->hw,
12505                                                         I40E_SR_EMP_SR_SETTINGS_PTR,
12506                                                         I40E_CURRENT_SETTING_PTR,
12507                                                         I40E_LINK_BEHAVIOR_WORD_OFFSET,
12508                                                         I40E_LINK_BEHAVIOR_WORD_LENGTH,
12509                                                         &link_behavior);
12510                 if (read_status)
12511                         goto err_nvm;
12512                 link_behavior >>= (pf->hw.port * I40E_LINK_BEHAVIOR_PORT_BIT_LENGTH);
12513                 ret = I40E_LINK_BEHAVIOR_OS_FORCED_ENABLED & link_behavior;
12514         }
12515         return ret;
12516
12517 err_nvm:
12518         dev_warn(&pf->pdev->dev,
12519                  "total-port-shutdown feature is off due to read nvm error: %s\n",
12520                  i40e_stat_str(&pf->hw, read_status));
12521         return ret;
12522 }
12523
12524 /**
12525  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
12526  * @pf: board private structure to initialize
12527  *
12528  * i40e_sw_init initializes the Adapter private data structure.
12529  * Fields are initialized based on PCI device information and
12530  * OS network device settings (MTU size).
12531  **/
12532 static int i40e_sw_init(struct i40e_pf *pf)
12533 {
12534         int err = 0;
12535         int size;
12536         u16 pow;
12537
12538         /* Set default capability flags */
12539         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
12540                     I40E_FLAG_MSI_ENABLED     |
12541                     I40E_FLAG_MSIX_ENABLED;
12542
12543         /* Set default ITR */
12544         pf->rx_itr_default = I40E_ITR_RX_DEF;
12545         pf->tx_itr_default = I40E_ITR_TX_DEF;
12546
12547         /* Depending on PF configurations, it is possible that the RSS
12548          * maximum might end up larger than the available queues
12549          */
12550         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
12551         pf->alloc_rss_size = 1;
12552         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
12553         pf->rss_size_max = min_t(int, pf->rss_size_max,
12554                                  pf->hw.func_caps.num_tx_qp);
12555
12556         /* find the next higher power-of-2 of num cpus */
12557         pow = roundup_pow_of_two(num_online_cpus());
12558         pf->rss_size_max = min_t(int, pf->rss_size_max, pow);
12559
12560         if (pf->hw.func_caps.rss) {
12561                 pf->flags |= I40E_FLAG_RSS_ENABLED;
12562                 pf->alloc_rss_size = min_t(int, pf->rss_size_max,
12563                                            num_online_cpus());
12564         }
12565
12566         /* MFP mode enabled */
12567         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
12568                 pf->flags |= I40E_FLAG_MFP_ENABLED;
12569                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
12570                 if (i40e_get_partition_bw_setting(pf)) {
12571                         dev_warn(&pf->pdev->dev,
12572                                  "Could not get partition bw settings\n");
12573                 } else {
12574                         dev_info(&pf->pdev->dev,
12575                                  "Partition BW Min = %8.8x, Max = %8.8x\n",
12576                                  pf->min_bw, pf->max_bw);
12577
12578                         /* nudge the Tx scheduler */
12579                         i40e_set_partition_bw_setting(pf);
12580                 }
12581         }
12582
12583         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
12584             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
12585                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
12586                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
12587                 if (pf->flags & I40E_FLAG_MFP_ENABLED &&
12588                     pf->hw.num_partitions > 1)
12589                         dev_info(&pf->pdev->dev,
12590                                  "Flow Director Sideband mode Disabled in MFP mode\n");
12591                 else
12592                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
12593                 pf->fdir_pf_filter_count =
12594                                  pf->hw.func_caps.fd_filters_guaranteed;
12595                 pf->hw.fdir_shared_filter_count =
12596                                  pf->hw.func_caps.fd_filters_best_effort;
12597         }
12598
12599         if (pf->hw.mac.type == I40E_MAC_X722) {
12600                 pf->hw_features |= (I40E_HW_RSS_AQ_CAPABLE |
12601                                     I40E_HW_128_QP_RSS_CAPABLE |
12602                                     I40E_HW_ATR_EVICT_CAPABLE |
12603                                     I40E_HW_WB_ON_ITR_CAPABLE |
12604                                     I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE |
12605                                     I40E_HW_NO_PCI_LINK_CHECK |
12606                                     I40E_HW_USE_SET_LLDP_MIB |
12607                                     I40E_HW_GENEVE_OFFLOAD_CAPABLE |
12608                                     I40E_HW_PTP_L4_CAPABLE |
12609                                     I40E_HW_WOL_MC_MAGIC_PKT_WAKE |
12610                                     I40E_HW_OUTER_UDP_CSUM_CAPABLE);
12611
12612 #define I40E_FDEVICT_PCTYPE_DEFAULT 0xc03
12613                 if (rd32(&pf->hw, I40E_GLQF_FDEVICTENA(1)) !=
12614                     I40E_FDEVICT_PCTYPE_DEFAULT) {
12615                         dev_warn(&pf->pdev->dev,
12616                                  "FD EVICT PCTYPES are not right, disable FD HW EVICT\n");
12617                         pf->hw_features &= ~I40E_HW_ATR_EVICT_CAPABLE;
12618                 }
12619         } else if ((pf->hw.aq.api_maj_ver > 1) ||
12620                    ((pf->hw.aq.api_maj_ver == 1) &&
12621                     (pf->hw.aq.api_min_ver > 4))) {
12622                 /* Supported in FW API version higher than 1.4 */
12623                 pf->hw_features |= I40E_HW_GENEVE_OFFLOAD_CAPABLE;
12624         }
12625
12626         /* Enable HW ATR eviction if possible */
12627         if (pf->hw_features & I40E_HW_ATR_EVICT_CAPABLE)
12628                 pf->flags |= I40E_FLAG_HW_ATR_EVICT_ENABLED;
12629
12630         if ((pf->hw.mac.type == I40E_MAC_XL710) &&
12631             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
12632             (pf->hw.aq.fw_maj_ver < 4))) {
12633                 pf->hw_features |= I40E_HW_RESTART_AUTONEG;
12634                 /* No DCB support  for FW < v4.33 */
12635                 pf->hw_features |= I40E_HW_NO_DCB_SUPPORT;
12636         }
12637
12638         /* Disable FW LLDP if FW < v4.3 */
12639         if ((pf->hw.mac.type == I40E_MAC_XL710) &&
12640             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
12641             (pf->hw.aq.fw_maj_ver < 4)))
12642                 pf->hw_features |= I40E_HW_STOP_FW_LLDP;
12643
12644         /* Use the FW Set LLDP MIB API if FW > v4.40 */
12645         if ((pf->hw.mac.type == I40E_MAC_XL710) &&
12646             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver >= 40)) ||
12647             (pf->hw.aq.fw_maj_ver >= 5)))
12648                 pf->hw_features |= I40E_HW_USE_SET_LLDP_MIB;
12649
12650         /* Enable PTP L4 if FW > v6.0 */
12651         if (pf->hw.mac.type == I40E_MAC_XL710 &&
12652             pf->hw.aq.fw_maj_ver >= 6)
12653                 pf->hw_features |= I40E_HW_PTP_L4_CAPABLE;
12654
12655         if (pf->hw.func_caps.vmdq && num_online_cpus() != 1) {
12656                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
12657                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
12658                 pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
12659         }
12660
12661         if (pf->hw.func_caps.iwarp && num_online_cpus() != 1) {
12662                 pf->flags |= I40E_FLAG_IWARP_ENABLED;
12663                 /* IWARP needs one extra vector for CQP just like MISC.*/
12664                 pf->num_iwarp_msix = (int)num_online_cpus() + 1;
12665         }
12666         /* Stopping FW LLDP engine is supported on XL710 and X722
12667          * starting from FW versions determined in i40e_init_adminq.
12668          * Stopping the FW LLDP engine is not supported on XL710
12669          * if NPAR is functioning so unset this hw flag in this case.
12670          */
12671         if (pf->hw.mac.type == I40E_MAC_XL710 &&
12672             pf->hw.func_caps.npar_enable &&
12673             (pf->hw.flags & I40E_HW_FLAG_FW_LLDP_STOPPABLE))
12674                 pf->hw.flags &= ~I40E_HW_FLAG_FW_LLDP_STOPPABLE;
12675
12676 #ifdef CONFIG_PCI_IOV
12677         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
12678                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
12679                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
12680                 pf->num_req_vfs = min_t(int,
12681                                         pf->hw.func_caps.num_vfs,
12682                                         I40E_MAX_VF_COUNT);
12683         }
12684 #endif /* CONFIG_PCI_IOV */
12685         pf->eeprom_version = 0xDEAD;
12686         pf->lan_veb = I40E_NO_VEB;
12687         pf->lan_vsi = I40E_NO_VSI;
12688
12689         /* By default FW has this off for performance reasons */
12690         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
12691
12692         /* set up queue assignment tracking */
12693         size = sizeof(struct i40e_lump_tracking)
12694                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
12695         pf->qp_pile = kzalloc(size, GFP_KERNEL);
12696         if (!pf->qp_pile) {
12697                 err = -ENOMEM;
12698                 goto sw_init_done;
12699         }
12700         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
12701
12702         pf->tx_timeout_recovery_level = 1;
12703
12704         if (pf->hw.mac.type != I40E_MAC_X722 &&
12705             i40e_is_total_port_shutdown_enabled(pf)) {
12706                 /* Link down on close must be on when total port shutdown
12707                  * is enabled for a given port
12708                  */
12709                 pf->flags |= (I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED |
12710                               I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED);
12711                 dev_info(&pf->pdev->dev,
12712                          "total-port-shutdown was enabled, link-down-on-close is forced on\n");
12713         }
12714         mutex_init(&pf->switch_mutex);
12715
12716 sw_init_done:
12717         return err;
12718 }
12719
12720 /**
12721  * i40e_set_ntuple - set the ntuple feature flag and take action
12722  * @pf: board private structure to initialize
12723  * @features: the feature set that the stack is suggesting
12724  *
12725  * returns a bool to indicate if reset needs to happen
12726  **/
12727 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
12728 {
12729         bool need_reset = false;
12730
12731         /* Check if Flow Director n-tuple support was enabled or disabled.  If
12732          * the state changed, we need to reset.
12733          */
12734         if (features & NETIF_F_NTUPLE) {
12735                 /* Enable filters and mark for reset */
12736                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
12737                         need_reset = true;
12738                 /* enable FD_SB only if there is MSI-X vector and no cloud
12739                  * filters exist
12740                  */
12741                 if (pf->num_fdsb_msix > 0 && !pf->num_cloud_filters) {
12742                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
12743                         pf->flags &= ~I40E_FLAG_FD_SB_INACTIVE;
12744                 }
12745         } else {
12746                 /* turn off filters, mark for reset and clear SW filter list */
12747                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
12748                         need_reset = true;
12749                         i40e_fdir_filter_exit(pf);
12750                 }
12751                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
12752                 clear_bit(__I40E_FD_SB_AUTO_DISABLED, pf->state);
12753                 pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
12754
12755                 /* reset fd counters */
12756                 pf->fd_add_err = 0;
12757                 pf->fd_atr_cnt = 0;
12758                 /* if ATR was auto disabled it can be re-enabled. */
12759                 if (test_and_clear_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state))
12760                         if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
12761                             (I40E_DEBUG_FD & pf->hw.debug_mask))
12762                                 dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
12763         }
12764         return need_reset;
12765 }
12766
12767 /**
12768  * i40e_clear_rss_lut - clear the rx hash lookup table
12769  * @vsi: the VSI being configured
12770  **/
12771 static void i40e_clear_rss_lut(struct i40e_vsi *vsi)
12772 {
12773         struct i40e_pf *pf = vsi->back;
12774         struct i40e_hw *hw = &pf->hw;
12775         u16 vf_id = vsi->vf_id;
12776         u8 i;
12777
12778         if (vsi->type == I40E_VSI_MAIN) {
12779                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
12780                         wr32(hw, I40E_PFQF_HLUT(i), 0);
12781         } else if (vsi->type == I40E_VSI_SRIOV) {
12782                 for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
12783                         i40e_write_rx_ctl(hw, I40E_VFQF_HLUT1(i, vf_id), 0);
12784         } else {
12785                 dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
12786         }
12787 }
12788
12789 /**
12790  * i40e_set_features - set the netdev feature flags
12791  * @netdev: ptr to the netdev being adjusted
12792  * @features: the feature set that the stack is suggesting
12793  * Note: expects to be called while under rtnl_lock()
12794  **/
12795 static int i40e_set_features(struct net_device *netdev,
12796                              netdev_features_t features)
12797 {
12798         struct i40e_netdev_priv *np = netdev_priv(netdev);
12799         struct i40e_vsi *vsi = np->vsi;
12800         struct i40e_pf *pf = vsi->back;
12801         bool need_reset;
12802
12803         if (features & NETIF_F_RXHASH && !(netdev->features & NETIF_F_RXHASH))
12804                 i40e_pf_config_rss(pf);
12805         else if (!(features & NETIF_F_RXHASH) &&
12806                  netdev->features & NETIF_F_RXHASH)
12807                 i40e_clear_rss_lut(vsi);
12808
12809         if (features & NETIF_F_HW_VLAN_CTAG_RX)
12810                 i40e_vlan_stripping_enable(vsi);
12811         else
12812                 i40e_vlan_stripping_disable(vsi);
12813
12814         if (!(features & NETIF_F_HW_TC) &&
12815             (netdev->features & NETIF_F_HW_TC) && pf->num_cloud_filters) {
12816                 dev_err(&pf->pdev->dev,
12817                         "Offloaded tc filters active, can't turn hw_tc_offload off");
12818                 return -EINVAL;
12819         }
12820
12821         if (!(features & NETIF_F_HW_L2FW_DOFFLOAD) && vsi->macvlan_cnt)
12822                 i40e_del_all_macvlans(vsi);
12823
12824         need_reset = i40e_set_ntuple(pf, features);
12825
12826         if (need_reset)
12827                 i40e_do_reset(pf, I40E_PF_RESET_FLAG, true);
12828
12829         return 0;
12830 }
12831
12832 static int i40e_udp_tunnel_set_port(struct net_device *netdev,
12833                                     unsigned int table, unsigned int idx,
12834                                     struct udp_tunnel_info *ti)
12835 {
12836         struct i40e_netdev_priv *np = netdev_priv(netdev);
12837         struct i40e_hw *hw = &np->vsi->back->hw;
12838         u8 type, filter_index;
12839         i40e_status ret;
12840
12841         type = ti->type == UDP_TUNNEL_TYPE_VXLAN ? I40E_AQC_TUNNEL_TYPE_VXLAN :
12842                                                    I40E_AQC_TUNNEL_TYPE_NGE;
12843
12844         ret = i40e_aq_add_udp_tunnel(hw, ntohs(ti->port), type, &filter_index,
12845                                      NULL);
12846         if (ret) {
12847                 netdev_info(netdev, "add UDP port failed, err %s aq_err %s\n",
12848                             i40e_stat_str(hw, ret),
12849                             i40e_aq_str(hw, hw->aq.asq_last_status));
12850                 return -EIO;
12851         }
12852
12853         udp_tunnel_nic_set_port_priv(netdev, table, idx, filter_index);
12854         return 0;
12855 }
12856
12857 static int i40e_udp_tunnel_unset_port(struct net_device *netdev,
12858                                       unsigned int table, unsigned int idx,
12859                                       struct udp_tunnel_info *ti)
12860 {
12861         struct i40e_netdev_priv *np = netdev_priv(netdev);
12862         struct i40e_hw *hw = &np->vsi->back->hw;
12863         i40e_status ret;
12864
12865         ret = i40e_aq_del_udp_tunnel(hw, ti->hw_priv, NULL);
12866         if (ret) {
12867                 netdev_info(netdev, "delete UDP port failed, err %s aq_err %s\n",
12868                             i40e_stat_str(hw, ret),
12869                             i40e_aq_str(hw, hw->aq.asq_last_status));
12870                 return -EIO;
12871         }
12872
12873         return 0;
12874 }
12875
12876 static int i40e_get_phys_port_id(struct net_device *netdev,
12877                                  struct netdev_phys_item_id *ppid)
12878 {
12879         struct i40e_netdev_priv *np = netdev_priv(netdev);
12880         struct i40e_pf *pf = np->vsi->back;
12881         struct i40e_hw *hw = &pf->hw;
12882
12883         if (!(pf->hw_features & I40E_HW_PORT_ID_VALID))
12884                 return -EOPNOTSUPP;
12885
12886         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
12887         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
12888
12889         return 0;
12890 }
12891
12892 /**
12893  * i40e_ndo_fdb_add - add an entry to the hardware database
12894  * @ndm: the input from the stack
12895  * @tb: pointer to array of nladdr (unused)
12896  * @dev: the net device pointer
12897  * @addr: the MAC address entry being added
12898  * @vid: VLAN ID
12899  * @flags: instructions from stack about fdb operation
12900  * @extack: netlink extended ack, unused currently
12901  */
12902 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
12903                             struct net_device *dev,
12904                             const unsigned char *addr, u16 vid,
12905                             u16 flags,
12906                             struct netlink_ext_ack *extack)
12907 {
12908         struct i40e_netdev_priv *np = netdev_priv(dev);
12909         struct i40e_pf *pf = np->vsi->back;
12910         int err = 0;
12911
12912         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
12913                 return -EOPNOTSUPP;
12914
12915         if (vid) {
12916                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
12917                 return -EINVAL;
12918         }
12919
12920         /* Hardware does not support aging addresses so if a
12921          * ndm_state is given only allow permanent addresses
12922          */
12923         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
12924                 netdev_info(dev, "FDB only supports static addresses\n");
12925                 return -EINVAL;
12926         }
12927
12928         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
12929                 err = dev_uc_add_excl(dev, addr);
12930         else if (is_multicast_ether_addr(addr))
12931                 err = dev_mc_add_excl(dev, addr);
12932         else
12933                 err = -EINVAL;
12934
12935         /* Only return duplicate errors if NLM_F_EXCL is set */
12936         if (err == -EEXIST && !(flags & NLM_F_EXCL))
12937                 err = 0;
12938
12939         return err;
12940 }
12941
12942 /**
12943  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
12944  * @dev: the netdev being configured
12945  * @nlh: RTNL message
12946  * @flags: bridge flags
12947  * @extack: netlink extended ack
12948  *
12949  * Inserts a new hardware bridge if not already created and
12950  * enables the bridging mode requested (VEB or VEPA). If the
12951  * hardware bridge has already been inserted and the request
12952  * is to change the mode then that requires a PF reset to
12953  * allow rebuild of the components with required hardware
12954  * bridge mode enabled.
12955  *
12956  * Note: expects to be called while under rtnl_lock()
12957  **/
12958 static int i40e_ndo_bridge_setlink(struct net_device *dev,
12959                                    struct nlmsghdr *nlh,
12960                                    u16 flags,
12961                                    struct netlink_ext_ack *extack)
12962 {
12963         struct i40e_netdev_priv *np = netdev_priv(dev);
12964         struct i40e_vsi *vsi = np->vsi;
12965         struct i40e_pf *pf = vsi->back;
12966         struct i40e_veb *veb = NULL;
12967         struct nlattr *attr, *br_spec;
12968         int i, rem;
12969
12970         /* Only for PF VSI for now */
12971         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
12972                 return -EOPNOTSUPP;
12973
12974         /* Find the HW bridge for PF VSI */
12975         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
12976                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
12977                         veb = pf->veb[i];
12978         }
12979
12980         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
12981
12982         nla_for_each_nested(attr, br_spec, rem) {
12983                 __u16 mode;
12984
12985                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
12986                         continue;
12987
12988                 mode = nla_get_u16(attr);
12989                 if ((mode != BRIDGE_MODE_VEPA) &&
12990                     (mode != BRIDGE_MODE_VEB))
12991                         return -EINVAL;
12992
12993                 /* Insert a new HW bridge */
12994                 if (!veb) {
12995                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
12996                                              vsi->tc_config.enabled_tc);
12997                         if (veb) {
12998                                 veb->bridge_mode = mode;
12999                                 i40e_config_bridge_mode(veb);
13000                         } else {
13001                                 /* No Bridge HW offload available */
13002                                 return -ENOENT;
13003                         }
13004                         break;
13005                 } else if (mode != veb->bridge_mode) {
13006                         /* Existing HW bridge but different mode needs reset */
13007                         veb->bridge_mode = mode;
13008                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
13009                         if (mode == BRIDGE_MODE_VEB)
13010                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
13011                         else
13012                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
13013                         i40e_do_reset(pf, I40E_PF_RESET_FLAG, true);
13014                         break;
13015                 }
13016         }
13017
13018         return 0;
13019 }
13020
13021 /**
13022  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
13023  * @skb: skb buff
13024  * @pid: process id
13025  * @seq: RTNL message seq #
13026  * @dev: the netdev being configured
13027  * @filter_mask: unused
13028  * @nlflags: netlink flags passed in
13029  *
13030  * Return the mode in which the hardware bridge is operating in
13031  * i.e VEB or VEPA.
13032  **/
13033 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
13034                                    struct net_device *dev,
13035                                    u32 __always_unused filter_mask,
13036                                    int nlflags)
13037 {
13038         struct i40e_netdev_priv *np = netdev_priv(dev);
13039         struct i40e_vsi *vsi = np->vsi;
13040         struct i40e_pf *pf = vsi->back;
13041         struct i40e_veb *veb = NULL;
13042         int i;
13043
13044         /* Only for PF VSI for now */
13045         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
13046                 return -EOPNOTSUPP;
13047
13048         /* Find the HW bridge for the PF VSI */
13049         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
13050                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
13051                         veb = pf->veb[i];
13052         }
13053
13054         if (!veb)
13055                 return 0;
13056
13057         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
13058                                        0, 0, nlflags, filter_mask, NULL);
13059 }
13060
13061 /**
13062  * i40e_features_check - Validate encapsulated packet conforms to limits
13063  * @skb: skb buff
13064  * @dev: This physical port's netdev
13065  * @features: Offload features that the stack believes apply
13066  **/
13067 static netdev_features_t i40e_features_check(struct sk_buff *skb,
13068                                              struct net_device *dev,
13069                                              netdev_features_t features)
13070 {
13071         size_t len;
13072
13073         /* No point in doing any of this if neither checksum nor GSO are
13074          * being requested for this frame.  We can rule out both by just
13075          * checking for CHECKSUM_PARTIAL
13076          */
13077         if (skb->ip_summed != CHECKSUM_PARTIAL)
13078                 return features;
13079
13080         /* We cannot support GSO if the MSS is going to be less than
13081          * 64 bytes.  If it is then we need to drop support for GSO.
13082          */
13083         if (skb_is_gso(skb) && (skb_shinfo(skb)->gso_size < 64))
13084                 features &= ~NETIF_F_GSO_MASK;
13085
13086         /* MACLEN can support at most 63 words */
13087         len = skb_network_header(skb) - skb->data;
13088         if (len & ~(63 * 2))
13089                 goto out_err;
13090
13091         /* IPLEN and EIPLEN can support at most 127 dwords */
13092         len = skb_transport_header(skb) - skb_network_header(skb);
13093         if (len & ~(127 * 4))
13094                 goto out_err;
13095
13096         if (skb->encapsulation) {
13097                 /* L4TUNLEN can support 127 words */
13098                 len = skb_inner_network_header(skb) - skb_transport_header(skb);
13099                 if (len & ~(127 * 2))
13100                         goto out_err;
13101
13102                 /* IPLEN can support at most 127 dwords */
13103                 len = skb_inner_transport_header(skb) -
13104                       skb_inner_network_header(skb);
13105                 if (len & ~(127 * 4))
13106                         goto out_err;
13107         }
13108
13109         /* No need to validate L4LEN as TCP is the only protocol with a
13110          * a flexible value and we support all possible values supported
13111          * by TCP, which is at most 15 dwords
13112          */
13113
13114         return features;
13115 out_err:
13116         return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
13117 }
13118
13119 /**
13120  * i40e_xdp_setup - add/remove an XDP program
13121  * @vsi: VSI to changed
13122  * @prog: XDP program
13123  * @extack: netlink extended ack
13124  **/
13125 static int i40e_xdp_setup(struct i40e_vsi *vsi, struct bpf_prog *prog,
13126                           struct netlink_ext_ack *extack)
13127 {
13128         int frame_size = vsi->netdev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
13129         struct i40e_pf *pf = vsi->back;
13130         struct bpf_prog *old_prog;
13131         bool need_reset;
13132         int i;
13133
13134         /* Don't allow frames that span over multiple buffers */
13135         if (frame_size > vsi->rx_buf_len) {
13136                 NL_SET_ERR_MSG_MOD(extack, "MTU too large to enable XDP");
13137                 return -EINVAL;
13138         }
13139
13140         /* When turning XDP on->off/off->on we reset and rebuild the rings. */
13141         need_reset = (i40e_enabled_xdp_vsi(vsi) != !!prog);
13142
13143         if (need_reset)
13144                 i40e_prep_for_reset(pf);
13145
13146         /* VSI shall be deleted in a moment, just return EINVAL */
13147         if (test_bit(__I40E_IN_REMOVE, pf->state))
13148                 return -EINVAL;
13149
13150         old_prog = xchg(&vsi->xdp_prog, prog);
13151
13152         if (need_reset) {
13153                 if (!prog)
13154                         /* Wait until ndo_xsk_wakeup completes. */
13155                         synchronize_rcu();
13156                 i40e_reset_and_rebuild(pf, true, true);
13157         }
13158
13159         for (i = 0; i < vsi->num_queue_pairs; i++)
13160                 WRITE_ONCE(vsi->rx_rings[i]->xdp_prog, vsi->xdp_prog);
13161
13162         if (old_prog)
13163                 bpf_prog_put(old_prog);
13164
13165         /* Kick start the NAPI context if there is an AF_XDP socket open
13166          * on that queue id. This so that receiving will start.
13167          */
13168         if (need_reset && prog)
13169                 for (i = 0; i < vsi->num_queue_pairs; i++)
13170                         if (vsi->xdp_rings[i]->xsk_pool)
13171                                 (void)i40e_xsk_wakeup(vsi->netdev, i,
13172                                                       XDP_WAKEUP_RX);
13173
13174         return 0;
13175 }
13176
13177 /**
13178  * i40e_enter_busy_conf - Enters busy config state
13179  * @vsi: vsi
13180  *
13181  * Returns 0 on success, <0 for failure.
13182  **/
13183 static int i40e_enter_busy_conf(struct i40e_vsi *vsi)
13184 {
13185         struct i40e_pf *pf = vsi->back;
13186         int timeout = 50;
13187
13188         while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) {
13189                 timeout--;
13190                 if (!timeout)
13191                         return -EBUSY;
13192                 usleep_range(1000, 2000);
13193         }
13194
13195         return 0;
13196 }
13197
13198 /**
13199  * i40e_exit_busy_conf - Exits busy config state
13200  * @vsi: vsi
13201  **/
13202 static void i40e_exit_busy_conf(struct i40e_vsi *vsi)
13203 {
13204         struct i40e_pf *pf = vsi->back;
13205
13206         clear_bit(__I40E_CONFIG_BUSY, pf->state);
13207 }
13208
13209 /**
13210  * i40e_queue_pair_reset_stats - Resets all statistics for a queue pair
13211  * @vsi: vsi
13212  * @queue_pair: queue pair
13213  **/
13214 static void i40e_queue_pair_reset_stats(struct i40e_vsi *vsi, int queue_pair)
13215 {
13216         memset(&vsi->rx_rings[queue_pair]->rx_stats, 0,
13217                sizeof(vsi->rx_rings[queue_pair]->rx_stats));
13218         memset(&vsi->tx_rings[queue_pair]->stats, 0,
13219                sizeof(vsi->tx_rings[queue_pair]->stats));
13220         if (i40e_enabled_xdp_vsi(vsi)) {
13221                 memset(&vsi->xdp_rings[queue_pair]->stats, 0,
13222                        sizeof(vsi->xdp_rings[queue_pair]->stats));
13223         }
13224 }
13225
13226 /**
13227  * i40e_queue_pair_clean_rings - Cleans all the rings of a queue pair
13228  * @vsi: vsi
13229  * @queue_pair: queue pair
13230  **/
13231 static void i40e_queue_pair_clean_rings(struct i40e_vsi *vsi, int queue_pair)
13232 {
13233         i40e_clean_tx_ring(vsi->tx_rings[queue_pair]);
13234         if (i40e_enabled_xdp_vsi(vsi)) {
13235                 /* Make sure that in-progress ndo_xdp_xmit calls are
13236                  * completed.
13237                  */
13238                 synchronize_rcu();
13239                 i40e_clean_tx_ring(vsi->xdp_rings[queue_pair]);
13240         }
13241         i40e_clean_rx_ring(vsi->rx_rings[queue_pair]);
13242 }
13243
13244 /**
13245  * i40e_queue_pair_toggle_napi - Enables/disables NAPI for a queue pair
13246  * @vsi: vsi
13247  * @queue_pair: queue pair
13248  * @enable: true for enable, false for disable
13249  **/
13250 static void i40e_queue_pair_toggle_napi(struct i40e_vsi *vsi, int queue_pair,
13251                                         bool enable)
13252 {
13253         struct i40e_ring *rxr = vsi->rx_rings[queue_pair];
13254         struct i40e_q_vector *q_vector = rxr->q_vector;
13255
13256         if (!vsi->netdev)
13257                 return;
13258
13259         /* All rings in a qp belong to the same qvector. */
13260         if (q_vector->rx.ring || q_vector->tx.ring) {
13261                 if (enable)
13262                         napi_enable(&q_vector->napi);
13263                 else
13264                         napi_disable(&q_vector->napi);
13265         }
13266 }
13267
13268 /**
13269  * i40e_queue_pair_toggle_rings - Enables/disables all rings for a queue pair
13270  * @vsi: vsi
13271  * @queue_pair: queue pair
13272  * @enable: true for enable, false for disable
13273  *
13274  * Returns 0 on success, <0 on failure.
13275  **/
13276 static int i40e_queue_pair_toggle_rings(struct i40e_vsi *vsi, int queue_pair,
13277                                         bool enable)
13278 {
13279         struct i40e_pf *pf = vsi->back;
13280         int pf_q, ret = 0;
13281
13282         pf_q = vsi->base_queue + queue_pair;
13283         ret = i40e_control_wait_tx_q(vsi->seid, pf, pf_q,
13284                                      false /*is xdp*/, enable);
13285         if (ret) {
13286                 dev_info(&pf->pdev->dev,
13287                          "VSI seid %d Tx ring %d %sable timeout\n",
13288                          vsi->seid, pf_q, (enable ? "en" : "dis"));
13289                 return ret;
13290         }
13291
13292         i40e_control_rx_q(pf, pf_q, enable);
13293         ret = i40e_pf_rxq_wait(pf, pf_q, enable);
13294         if (ret) {
13295                 dev_info(&pf->pdev->dev,
13296                          "VSI seid %d Rx ring %d %sable timeout\n",
13297                          vsi->seid, pf_q, (enable ? "en" : "dis"));
13298                 return ret;
13299         }
13300
13301         /* Due to HW errata, on Rx disable only, the register can
13302          * indicate done before it really is. Needs 50ms to be sure
13303          */
13304         if (!enable)
13305                 mdelay(50);
13306
13307         if (!i40e_enabled_xdp_vsi(vsi))
13308                 return ret;
13309
13310         ret = i40e_control_wait_tx_q(vsi->seid, pf,
13311                                      pf_q + vsi->alloc_queue_pairs,
13312                                      true /*is xdp*/, enable);
13313         if (ret) {
13314                 dev_info(&pf->pdev->dev,
13315                          "VSI seid %d XDP Tx ring %d %sable timeout\n",
13316                          vsi->seid, pf_q, (enable ? "en" : "dis"));
13317         }
13318
13319         return ret;
13320 }
13321
13322 /**
13323  * i40e_queue_pair_enable_irq - Enables interrupts for a queue pair
13324  * @vsi: vsi
13325  * @queue_pair: queue_pair
13326  **/
13327 static void i40e_queue_pair_enable_irq(struct i40e_vsi *vsi, int queue_pair)
13328 {
13329         struct i40e_ring *rxr = vsi->rx_rings[queue_pair];
13330         struct i40e_pf *pf = vsi->back;
13331         struct i40e_hw *hw = &pf->hw;
13332
13333         /* All rings in a qp belong to the same qvector. */
13334         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
13335                 i40e_irq_dynamic_enable(vsi, rxr->q_vector->v_idx);
13336         else
13337                 i40e_irq_dynamic_enable_icr0(pf);
13338
13339         i40e_flush(hw);
13340 }
13341
13342 /**
13343  * i40e_queue_pair_disable_irq - Disables interrupts for a queue pair
13344  * @vsi: vsi
13345  * @queue_pair: queue_pair
13346  **/
13347 static void i40e_queue_pair_disable_irq(struct i40e_vsi *vsi, int queue_pair)
13348 {
13349         struct i40e_ring *rxr = vsi->rx_rings[queue_pair];
13350         struct i40e_pf *pf = vsi->back;
13351         struct i40e_hw *hw = &pf->hw;
13352
13353         /* For simplicity, instead of removing the qp interrupt causes
13354          * from the interrupt linked list, we simply disable the interrupt, and
13355          * leave the list intact.
13356          *
13357          * All rings in a qp belong to the same qvector.
13358          */
13359         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
13360                 u32 intpf = vsi->base_vector + rxr->q_vector->v_idx;
13361
13362                 wr32(hw, I40E_PFINT_DYN_CTLN(intpf - 1), 0);
13363                 i40e_flush(hw);
13364                 synchronize_irq(pf->msix_entries[intpf].vector);
13365         } else {
13366                 /* Legacy and MSI mode - this stops all interrupt handling */
13367                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
13368                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
13369                 i40e_flush(hw);
13370                 synchronize_irq(pf->pdev->irq);
13371         }
13372 }
13373
13374 /**
13375  * i40e_queue_pair_disable - Disables a queue pair
13376  * @vsi: vsi
13377  * @queue_pair: queue pair
13378  *
13379  * Returns 0 on success, <0 on failure.
13380  **/
13381 int i40e_queue_pair_disable(struct i40e_vsi *vsi, int queue_pair)
13382 {
13383         int err;
13384
13385         err = i40e_enter_busy_conf(vsi);
13386         if (err)
13387                 return err;
13388
13389         i40e_queue_pair_disable_irq(vsi, queue_pair);
13390         err = i40e_queue_pair_toggle_rings(vsi, queue_pair, false /* off */);
13391         i40e_queue_pair_toggle_napi(vsi, queue_pair, false /* off */);
13392         i40e_queue_pair_clean_rings(vsi, queue_pair);
13393         i40e_queue_pair_reset_stats(vsi, queue_pair);
13394
13395         return err;
13396 }
13397
13398 /**
13399  * i40e_queue_pair_enable - Enables a queue pair
13400  * @vsi: vsi
13401  * @queue_pair: queue pair
13402  *
13403  * Returns 0 on success, <0 on failure.
13404  **/
13405 int i40e_queue_pair_enable(struct i40e_vsi *vsi, int queue_pair)
13406 {
13407         int err;
13408
13409         err = i40e_configure_tx_ring(vsi->tx_rings[queue_pair]);
13410         if (err)
13411                 return err;
13412
13413         if (i40e_enabled_xdp_vsi(vsi)) {
13414                 err = i40e_configure_tx_ring(vsi->xdp_rings[queue_pair]);
13415                 if (err)
13416                         return err;
13417         }
13418
13419         err = i40e_configure_rx_ring(vsi->rx_rings[queue_pair]);
13420         if (err)
13421                 return err;
13422
13423         err = i40e_queue_pair_toggle_rings(vsi, queue_pair, true /* on */);
13424         i40e_queue_pair_toggle_napi(vsi, queue_pair, true /* on */);
13425         i40e_queue_pair_enable_irq(vsi, queue_pair);
13426
13427         i40e_exit_busy_conf(vsi);
13428
13429         return err;
13430 }
13431
13432 /**
13433  * i40e_xdp - implements ndo_bpf for i40e
13434  * @dev: netdevice
13435  * @xdp: XDP command
13436  **/
13437 static int i40e_xdp(struct net_device *dev,
13438                     struct netdev_bpf *xdp)
13439 {
13440         struct i40e_netdev_priv *np = netdev_priv(dev);
13441         struct i40e_vsi *vsi = np->vsi;
13442
13443         if (vsi->type != I40E_VSI_MAIN)
13444                 return -EINVAL;
13445
13446         switch (xdp->command) {
13447         case XDP_SETUP_PROG:
13448                 return i40e_xdp_setup(vsi, xdp->prog, xdp->extack);
13449         case XDP_SETUP_XSK_POOL:
13450                 return i40e_xsk_pool_setup(vsi, xdp->xsk.pool,
13451                                            xdp->xsk.queue_id);
13452         default:
13453                 return -EINVAL;
13454         }
13455 }
13456
13457 static const struct net_device_ops i40e_netdev_ops = {
13458         .ndo_open               = i40e_open,
13459         .ndo_stop               = i40e_close,
13460         .ndo_start_xmit         = i40e_lan_xmit_frame,
13461         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
13462         .ndo_set_rx_mode        = i40e_set_rx_mode,
13463         .ndo_validate_addr      = eth_validate_addr,
13464         .ndo_set_mac_address    = i40e_set_mac,
13465         .ndo_change_mtu         = i40e_change_mtu,
13466         .ndo_eth_ioctl          = i40e_ioctl,
13467         .ndo_tx_timeout         = i40e_tx_timeout,
13468         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
13469         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
13470 #ifdef CONFIG_NET_POLL_CONTROLLER
13471         .ndo_poll_controller    = i40e_netpoll,
13472 #endif
13473         .ndo_setup_tc           = __i40e_setup_tc,
13474         .ndo_select_queue       = i40e_lan_select_queue,
13475         .ndo_set_features       = i40e_set_features,
13476         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
13477         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
13478         .ndo_get_vf_stats       = i40e_get_vf_stats,
13479         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
13480         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
13481         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
13482         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
13483         .ndo_set_vf_trust       = i40e_ndo_set_vf_trust,
13484         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
13485         .ndo_fdb_add            = i40e_ndo_fdb_add,
13486         .ndo_features_check     = i40e_features_check,
13487         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
13488         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
13489         .ndo_bpf                = i40e_xdp,
13490         .ndo_xdp_xmit           = i40e_xdp_xmit,
13491         .ndo_xsk_wakeup         = i40e_xsk_wakeup,
13492         .ndo_dfwd_add_station   = i40e_fwd_add,
13493         .ndo_dfwd_del_station   = i40e_fwd_del,
13494 };
13495
13496 /**
13497  * i40e_config_netdev - Setup the netdev flags
13498  * @vsi: the VSI being configured
13499  *
13500  * Returns 0 on success, negative value on failure
13501  **/
13502 static int i40e_config_netdev(struct i40e_vsi *vsi)
13503 {
13504         struct i40e_pf *pf = vsi->back;
13505         struct i40e_hw *hw = &pf->hw;
13506         struct i40e_netdev_priv *np;
13507         struct net_device *netdev;
13508         u8 broadcast[ETH_ALEN];
13509         u8 mac_addr[ETH_ALEN];
13510         int etherdev_size;
13511         netdev_features_t hw_enc_features;
13512         netdev_features_t hw_features;
13513
13514         etherdev_size = sizeof(struct i40e_netdev_priv);
13515         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
13516         if (!netdev)
13517                 return -ENOMEM;
13518
13519         vsi->netdev = netdev;
13520         np = netdev_priv(netdev);
13521         np->vsi = vsi;
13522
13523         hw_enc_features = NETIF_F_SG                    |
13524                           NETIF_F_HW_CSUM               |
13525                           NETIF_F_HIGHDMA               |
13526                           NETIF_F_SOFT_FEATURES         |
13527                           NETIF_F_TSO                   |
13528                           NETIF_F_TSO_ECN               |
13529                           NETIF_F_TSO6                  |
13530                           NETIF_F_GSO_GRE               |
13531                           NETIF_F_GSO_GRE_CSUM          |
13532                           NETIF_F_GSO_PARTIAL           |
13533                           NETIF_F_GSO_IPXIP4            |
13534                           NETIF_F_GSO_IPXIP6            |
13535                           NETIF_F_GSO_UDP_TUNNEL        |
13536                           NETIF_F_GSO_UDP_TUNNEL_CSUM   |
13537                           NETIF_F_GSO_UDP_L4            |
13538                           NETIF_F_SCTP_CRC              |
13539                           NETIF_F_RXHASH                |
13540                           NETIF_F_RXCSUM                |
13541                           0;
13542
13543         if (!(pf->hw_features & I40E_HW_OUTER_UDP_CSUM_CAPABLE))
13544                 netdev->gso_partial_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;
13545
13546         netdev->udp_tunnel_nic_info = &pf->udp_tunnel_nic;
13547
13548         netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;
13549
13550         netdev->hw_enc_features |= hw_enc_features;
13551
13552         /* record features VLANs can make use of */
13553         netdev->vlan_features |= hw_enc_features | NETIF_F_TSO_MANGLEID;
13554
13555 #define I40E_GSO_PARTIAL_FEATURES (NETIF_F_GSO_GRE |            \
13556                                    NETIF_F_GSO_GRE_CSUM |       \
13557                                    NETIF_F_GSO_IPXIP4 |         \
13558                                    NETIF_F_GSO_IPXIP6 |         \
13559                                    NETIF_F_GSO_UDP_TUNNEL |     \
13560                                    NETIF_F_GSO_UDP_TUNNEL_CSUM)
13561
13562         netdev->gso_partial_features = I40E_GSO_PARTIAL_FEATURES;
13563         netdev->features |= NETIF_F_GSO_PARTIAL |
13564                             I40E_GSO_PARTIAL_FEATURES;
13565
13566         netdev->mpls_features |= NETIF_F_SG;
13567         netdev->mpls_features |= NETIF_F_HW_CSUM;
13568         netdev->mpls_features |= NETIF_F_TSO;
13569         netdev->mpls_features |= NETIF_F_TSO6;
13570         netdev->mpls_features |= I40E_GSO_PARTIAL_FEATURES;
13571
13572         /* enable macvlan offloads */
13573         netdev->hw_features |= NETIF_F_HW_L2FW_DOFFLOAD;
13574
13575         hw_features = hw_enc_features           |
13576                       NETIF_F_HW_VLAN_CTAG_TX   |
13577                       NETIF_F_HW_VLAN_CTAG_RX;
13578
13579         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
13580                 hw_features |= NETIF_F_NTUPLE | NETIF_F_HW_TC;
13581
13582         netdev->hw_features |= hw_features;
13583
13584         netdev->features |= hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
13585         netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID;
13586
13587         netdev->features &= ~NETIF_F_HW_TC;
13588
13589         if (vsi->type == I40E_VSI_MAIN) {
13590                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
13591                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
13592                 /* The following steps are necessary for two reasons. First,
13593                  * some older NVM configurations load a default MAC-VLAN
13594                  * filter that will accept any tagged packet, and we want to
13595                  * replace this with a normal filter. Additionally, it is
13596                  * possible our MAC address was provided by the platform using
13597                  * Open Firmware or similar.
13598                  *
13599                  * Thus, we need to remove the default filter and install one
13600                  * specific to the MAC address.
13601                  */
13602                 i40e_rm_default_mac_filter(vsi, mac_addr);
13603                 spin_lock_bh(&vsi->mac_filter_hash_lock);
13604                 i40e_add_mac_filter(vsi, mac_addr);
13605                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
13606         } else {
13607                 /* Relate the VSI_VMDQ name to the VSI_MAIN name. Note that we
13608                  * are still limited by IFNAMSIZ, but we're adding 'v%d\0' to
13609                  * the end, which is 4 bytes long, so force truncation of the
13610                  * original name by IFNAMSIZ - 4
13611                  */
13612                 snprintf(netdev->name, IFNAMSIZ, "%.*sv%%d",
13613                          IFNAMSIZ - 4,
13614                          pf->vsi[pf->lan_vsi]->netdev->name);
13615                 eth_random_addr(mac_addr);
13616
13617                 spin_lock_bh(&vsi->mac_filter_hash_lock);
13618                 i40e_add_mac_filter(vsi, mac_addr);
13619                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
13620         }
13621
13622         /* Add the broadcast filter so that we initially will receive
13623          * broadcast packets. Note that when a new VLAN is first added the
13624          * driver will convert all filters marked I40E_VLAN_ANY into VLAN
13625          * specific filters as part of transitioning into "vlan" operation.
13626          * When more VLANs are added, the driver will copy each existing MAC
13627          * filter and add it for the new VLAN.
13628          *
13629          * Broadcast filters are handled specially by
13630          * i40e_sync_filters_subtask, as the driver must to set the broadcast
13631          * promiscuous bit instead of adding this directly as a MAC/VLAN
13632          * filter. The subtask will update the correct broadcast promiscuous
13633          * bits as VLANs become active or inactive.
13634          */
13635         eth_broadcast_addr(broadcast);
13636         spin_lock_bh(&vsi->mac_filter_hash_lock);
13637         i40e_add_mac_filter(vsi, broadcast);
13638         spin_unlock_bh(&vsi->mac_filter_hash_lock);
13639
13640         eth_hw_addr_set(netdev, mac_addr);
13641         ether_addr_copy(netdev->perm_addr, mac_addr);
13642
13643         /* i40iw_net_event() reads 16 bytes from neigh->primary_key */
13644         netdev->neigh_priv_len = sizeof(u32) * 4;
13645
13646         netdev->priv_flags |= IFF_UNICAST_FLT;
13647         netdev->priv_flags |= IFF_SUPP_NOFCS;
13648         /* Setup netdev TC information */
13649         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
13650
13651         netdev->netdev_ops = &i40e_netdev_ops;
13652         netdev->watchdog_timeo = 5 * HZ;
13653         i40e_set_ethtool_ops(netdev);
13654
13655         /* MTU range: 68 - 9706 */
13656         netdev->min_mtu = ETH_MIN_MTU;
13657         netdev->max_mtu = I40E_MAX_RXBUFFER - I40E_PACKET_HDR_PAD;
13658
13659         return 0;
13660 }
13661
13662 /**
13663  * i40e_vsi_delete - Delete a VSI from the switch
13664  * @vsi: the VSI being removed
13665  *
13666  * Returns 0 on success, negative value on failure
13667  **/
13668 static void i40e_vsi_delete(struct i40e_vsi *vsi)
13669 {
13670         /* remove default VSI is not allowed */
13671         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
13672                 return;
13673
13674         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
13675 }
13676
13677 /**
13678  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
13679  * @vsi: the VSI being queried
13680  *
13681  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
13682  **/
13683 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
13684 {
13685         struct i40e_veb *veb;
13686         struct i40e_pf *pf = vsi->back;
13687
13688         /* Uplink is not a bridge so default to VEB */
13689         if (vsi->veb_idx >= I40E_MAX_VEB)
13690                 return 1;
13691
13692         veb = pf->veb[vsi->veb_idx];
13693         if (!veb) {
13694                 dev_info(&pf->pdev->dev,
13695                          "There is no veb associated with the bridge\n");
13696                 return -ENOENT;
13697         }
13698
13699         /* Uplink is a bridge in VEPA mode */
13700         if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
13701                 return 0;
13702         } else {
13703                 /* Uplink is a bridge in VEB mode */
13704                 return 1;
13705         }
13706
13707         /* VEPA is now default bridge, so return 0 */
13708         return 0;
13709 }
13710
13711 /**
13712  * i40e_add_vsi - Add a VSI to the switch
13713  * @vsi: the VSI being configured
13714  *
13715  * This initializes a VSI context depending on the VSI type to be added and
13716  * passes it down to the add_vsi aq command.
13717  **/
13718 static int i40e_add_vsi(struct i40e_vsi *vsi)
13719 {
13720         int ret = -ENODEV;
13721         struct i40e_pf *pf = vsi->back;
13722         struct i40e_hw *hw = &pf->hw;
13723         struct i40e_vsi_context ctxt;
13724         struct i40e_mac_filter *f;
13725         struct hlist_node *h;
13726         int bkt;
13727
13728         u8 enabled_tc = 0x1; /* TC0 enabled */
13729         int f_count = 0;
13730
13731         memset(&ctxt, 0, sizeof(ctxt));
13732         switch (vsi->type) {
13733         case I40E_VSI_MAIN:
13734                 /* The PF's main VSI is already setup as part of the
13735                  * device initialization, so we'll not bother with
13736                  * the add_vsi call, but we will retrieve the current
13737                  * VSI context.
13738                  */
13739                 ctxt.seid = pf->main_vsi_seid;
13740                 ctxt.pf_num = pf->hw.pf_id;
13741                 ctxt.vf_num = 0;
13742                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
13743                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
13744                 if (ret) {
13745                         dev_info(&pf->pdev->dev,
13746                                  "couldn't get PF vsi config, err %s aq_err %s\n",
13747                                  i40e_stat_str(&pf->hw, ret),
13748                                  i40e_aq_str(&pf->hw,
13749                                              pf->hw.aq.asq_last_status));
13750                         return -ENOENT;
13751                 }
13752                 vsi->info = ctxt.info;
13753                 vsi->info.valid_sections = 0;
13754
13755                 vsi->seid = ctxt.seid;
13756                 vsi->id = ctxt.vsi_number;
13757
13758                 enabled_tc = i40e_pf_get_tc_map(pf);
13759
13760                 /* Source pruning is enabled by default, so the flag is
13761                  * negative logic - if it's set, we need to fiddle with
13762                  * the VSI to disable source pruning.
13763                  */
13764                 if (pf->flags & I40E_FLAG_SOURCE_PRUNING_DISABLED) {
13765                         memset(&ctxt, 0, sizeof(ctxt));
13766                         ctxt.seid = pf->main_vsi_seid;
13767                         ctxt.pf_num = pf->hw.pf_id;
13768                         ctxt.vf_num = 0;
13769                         ctxt.info.valid_sections |=
13770                                      cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
13771                         ctxt.info.switch_id =
13772                                    cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_LOCAL_LB);
13773                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
13774                         if (ret) {
13775                                 dev_info(&pf->pdev->dev,
13776                                          "update vsi failed, err %s aq_err %s\n",
13777                                          i40e_stat_str(&pf->hw, ret),
13778                                          i40e_aq_str(&pf->hw,
13779                                                      pf->hw.aq.asq_last_status));
13780                                 ret = -ENOENT;
13781                                 goto err;
13782                         }
13783                 }
13784
13785                 /* MFP mode setup queue map and update VSI */
13786                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
13787                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
13788                         memset(&ctxt, 0, sizeof(ctxt));
13789                         ctxt.seid = pf->main_vsi_seid;
13790                         ctxt.pf_num = pf->hw.pf_id;
13791                         ctxt.vf_num = 0;
13792                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
13793                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
13794                         if (ret) {
13795                                 dev_info(&pf->pdev->dev,
13796                                          "update vsi failed, err %s aq_err %s\n",
13797                                          i40e_stat_str(&pf->hw, ret),
13798                                          i40e_aq_str(&pf->hw,
13799                                                     pf->hw.aq.asq_last_status));
13800                                 ret = -ENOENT;
13801                                 goto err;
13802                         }
13803                         /* update the local VSI info queue map */
13804                         i40e_vsi_update_queue_map(vsi, &ctxt);
13805                         vsi->info.valid_sections = 0;
13806                 } else {
13807                         /* Default/Main VSI is only enabled for TC0
13808                          * reconfigure it to enable all TCs that are
13809                          * available on the port in SFP mode.
13810                          * For MFP case the iSCSI PF would use this
13811                          * flow to enable LAN+iSCSI TC.
13812                          */
13813                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
13814                         if (ret) {
13815                                 /* Single TC condition is not fatal,
13816                                  * message and continue
13817                                  */
13818                                 dev_info(&pf->pdev->dev,
13819                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
13820                                          enabled_tc,
13821                                          i40e_stat_str(&pf->hw, ret),
13822                                          i40e_aq_str(&pf->hw,
13823                                                     pf->hw.aq.asq_last_status));
13824                         }
13825                 }
13826                 break;
13827
13828         case I40E_VSI_FDIR:
13829                 ctxt.pf_num = hw->pf_id;
13830                 ctxt.vf_num = 0;
13831                 ctxt.uplink_seid = vsi->uplink_seid;
13832                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
13833                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
13834                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
13835                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
13836                         ctxt.info.valid_sections |=
13837                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
13838                         ctxt.info.switch_id =
13839                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
13840                 }
13841                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
13842                 break;
13843
13844         case I40E_VSI_VMDQ2:
13845                 ctxt.pf_num = hw->pf_id;
13846                 ctxt.vf_num = 0;
13847                 ctxt.uplink_seid = vsi->uplink_seid;
13848                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
13849                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
13850
13851                 /* This VSI is connected to VEB so the switch_id
13852                  * should be set to zero by default.
13853                  */
13854                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
13855                         ctxt.info.valid_sections |=
13856                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
13857                         ctxt.info.switch_id =
13858                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
13859                 }
13860
13861                 /* Setup the VSI tx/rx queue map for TC0 only for now */
13862                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
13863                 break;
13864
13865         case I40E_VSI_SRIOV:
13866                 ctxt.pf_num = hw->pf_id;
13867                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
13868                 ctxt.uplink_seid = vsi->uplink_seid;
13869                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
13870                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
13871
13872                 /* This VSI is connected to VEB so the switch_id
13873                  * should be set to zero by default.
13874                  */
13875                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
13876                         ctxt.info.valid_sections |=
13877                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
13878                         ctxt.info.switch_id =
13879                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
13880                 }
13881
13882                 if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
13883                         ctxt.info.valid_sections |=
13884                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
13885                         ctxt.info.queueing_opt_flags |=
13886                                 (I40E_AQ_VSI_QUE_OPT_TCP_ENA |
13887                                  I40E_AQ_VSI_QUE_OPT_RSS_LUT_VSI);
13888                 }
13889
13890                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
13891                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
13892                 if (pf->vf[vsi->vf_id].spoofchk) {
13893                         ctxt.info.valid_sections |=
13894                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
13895                         ctxt.info.sec_flags |=
13896                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
13897                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
13898                 }
13899                 /* Setup the VSI tx/rx queue map for TC0 only for now */
13900                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
13901                 break;
13902
13903         case I40E_VSI_IWARP:
13904                 /* send down message to iWARP */
13905                 break;
13906
13907         default:
13908                 return -ENODEV;
13909         }
13910
13911         if (vsi->type != I40E_VSI_MAIN) {
13912                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
13913                 if (ret) {
13914                         dev_info(&vsi->back->pdev->dev,
13915                                  "add vsi failed, err %s aq_err %s\n",
13916                                  i40e_stat_str(&pf->hw, ret),
13917                                  i40e_aq_str(&pf->hw,
13918                                              pf->hw.aq.asq_last_status));
13919                         ret = -ENOENT;
13920                         goto err;
13921                 }
13922                 vsi->info = ctxt.info;
13923                 vsi->info.valid_sections = 0;
13924                 vsi->seid = ctxt.seid;
13925                 vsi->id = ctxt.vsi_number;
13926         }
13927
13928         vsi->active_filters = 0;
13929         clear_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
13930         spin_lock_bh(&vsi->mac_filter_hash_lock);
13931         /* If macvlan filters already exist, force them to get loaded */
13932         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
13933                 f->state = I40E_FILTER_NEW;
13934                 f_count++;
13935         }
13936         spin_unlock_bh(&vsi->mac_filter_hash_lock);
13937
13938         if (f_count) {
13939                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
13940                 set_bit(__I40E_MACVLAN_SYNC_PENDING, pf->state);
13941         }
13942
13943         /* Update VSI BW information */
13944         ret = i40e_vsi_get_bw_info(vsi);
13945         if (ret) {
13946                 dev_info(&pf->pdev->dev,
13947                          "couldn't get vsi bw info, err %s aq_err %s\n",
13948                          i40e_stat_str(&pf->hw, ret),
13949                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
13950                 /* VSI is already added so not tearing that up */
13951                 ret = 0;
13952         }
13953
13954 err:
13955         return ret;
13956 }
13957
13958 /**
13959  * i40e_vsi_release - Delete a VSI and free its resources
13960  * @vsi: the VSI being removed
13961  *
13962  * Returns 0 on success or < 0 on error
13963  **/
13964 int i40e_vsi_release(struct i40e_vsi *vsi)
13965 {
13966         struct i40e_mac_filter *f;
13967         struct hlist_node *h;
13968         struct i40e_veb *veb = NULL;
13969         struct i40e_pf *pf;
13970         u16 uplink_seid;
13971         int i, n, bkt;
13972
13973         pf = vsi->back;
13974
13975         /* release of a VEB-owner or last VSI is not allowed */
13976         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
13977                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
13978                          vsi->seid, vsi->uplink_seid);
13979                 return -ENODEV;
13980         }
13981         if (vsi == pf->vsi[pf->lan_vsi] &&
13982             !test_bit(__I40E_DOWN, pf->state)) {
13983                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
13984                 return -ENODEV;
13985         }
13986         set_bit(__I40E_VSI_RELEASING, vsi->state);
13987         uplink_seid = vsi->uplink_seid;
13988         if (vsi->type != I40E_VSI_SRIOV) {
13989                 if (vsi->netdev_registered) {
13990                         vsi->netdev_registered = false;
13991                         if (vsi->netdev) {
13992                                 /* results in a call to i40e_close() */
13993                                 unregister_netdev(vsi->netdev);
13994                         }
13995                 } else {
13996                         i40e_vsi_close(vsi);
13997                 }
13998                 i40e_vsi_disable_irq(vsi);
13999         }
14000
14001         spin_lock_bh(&vsi->mac_filter_hash_lock);
14002
14003         /* clear the sync flag on all filters */
14004         if (vsi->netdev) {
14005                 __dev_uc_unsync(vsi->netdev, NULL);
14006                 __dev_mc_unsync(vsi->netdev, NULL);
14007         }
14008
14009         /* make sure any remaining filters are marked for deletion */
14010         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist)
14011                 __i40e_del_filter(vsi, f);
14012
14013         spin_unlock_bh(&vsi->mac_filter_hash_lock);
14014
14015         i40e_sync_vsi_filters(vsi);
14016
14017         i40e_vsi_delete(vsi);
14018         i40e_vsi_free_q_vectors(vsi);
14019         if (vsi->netdev) {
14020                 free_netdev(vsi->netdev);
14021                 vsi->netdev = NULL;
14022         }
14023         i40e_vsi_clear_rings(vsi);
14024         i40e_vsi_clear(vsi);
14025
14026         /* If this was the last thing on the VEB, except for the
14027          * controlling VSI, remove the VEB, which puts the controlling
14028          * VSI onto the next level down in the switch.
14029          *
14030          * Well, okay, there's one more exception here: don't remove
14031          * the orphan VEBs yet.  We'll wait for an explicit remove request
14032          * from up the network stack.
14033          */
14034         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
14035                 if (pf->vsi[i] &&
14036                     pf->vsi[i]->uplink_seid == uplink_seid &&
14037                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
14038                         n++;      /* count the VSIs */
14039                 }
14040         }
14041         for (i = 0; i < I40E_MAX_VEB; i++) {
14042                 if (!pf->veb[i])
14043                         continue;
14044                 if (pf->veb[i]->uplink_seid == uplink_seid)
14045                         n++;     /* count the VEBs */
14046                 if (pf->veb[i]->seid == uplink_seid)
14047                         veb = pf->veb[i];
14048         }
14049         if (n == 0 && veb && veb->uplink_seid != 0)
14050                 i40e_veb_release(veb);
14051
14052         return 0;
14053 }
14054
14055 /**
14056  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
14057  * @vsi: ptr to the VSI
14058  *
14059  * This should only be called after i40e_vsi_mem_alloc() which allocates the
14060  * corresponding SW VSI structure and initializes num_queue_pairs for the
14061  * newly allocated VSI.
14062  *
14063  * Returns 0 on success or negative on failure
14064  **/
14065 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
14066 {
14067         int ret = -ENOENT;
14068         struct i40e_pf *pf = vsi->back;
14069
14070         if (vsi->q_vectors[0]) {
14071                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
14072                          vsi->seid);
14073                 return -EEXIST;
14074         }
14075
14076         if (vsi->base_vector) {
14077                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
14078                          vsi->seid, vsi->base_vector);
14079                 return -EEXIST;
14080         }
14081
14082         ret = i40e_vsi_alloc_q_vectors(vsi);
14083         if (ret) {
14084                 dev_info(&pf->pdev->dev,
14085                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
14086                          vsi->num_q_vectors, vsi->seid, ret);
14087                 vsi->num_q_vectors = 0;
14088                 goto vector_setup_out;
14089         }
14090
14091         /* In Legacy mode, we do not have to get any other vector since we
14092          * piggyback on the misc/ICR0 for queue interrupts.
14093         */
14094         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
14095                 return ret;
14096         if (vsi->num_q_vectors)
14097                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
14098                                                  vsi->num_q_vectors, vsi->idx);
14099         if (vsi->base_vector < 0) {
14100                 dev_info(&pf->pdev->dev,
14101                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
14102                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
14103                 i40e_vsi_free_q_vectors(vsi);
14104                 ret = -ENOENT;
14105                 goto vector_setup_out;
14106         }
14107
14108 vector_setup_out:
14109         return ret;
14110 }
14111
14112 /**
14113  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
14114  * @vsi: pointer to the vsi.
14115  *
14116  * This re-allocates a vsi's queue resources.
14117  *
14118  * Returns pointer to the successfully allocated and configured VSI sw struct
14119  * on success, otherwise returns NULL on failure.
14120  **/
14121 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
14122 {
14123         u16 alloc_queue_pairs;
14124         struct i40e_pf *pf;
14125         u8 enabled_tc;
14126         int ret;
14127
14128         if (!vsi)
14129                 return NULL;
14130
14131         pf = vsi->back;
14132
14133         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
14134         i40e_vsi_clear_rings(vsi);
14135
14136         i40e_vsi_free_arrays(vsi, false);
14137         i40e_set_num_rings_in_vsi(vsi);
14138         ret = i40e_vsi_alloc_arrays(vsi, false);
14139         if (ret)
14140                 goto err_vsi;
14141
14142         alloc_queue_pairs = vsi->alloc_queue_pairs *
14143                             (i40e_enabled_xdp_vsi(vsi) ? 2 : 1);
14144
14145         ret = i40e_get_lump(pf, pf->qp_pile, alloc_queue_pairs, vsi->idx);
14146         if (ret < 0) {
14147                 dev_info(&pf->pdev->dev,
14148                          "failed to get tracking for %d queues for VSI %d err %d\n",
14149                          alloc_queue_pairs, vsi->seid, ret);
14150                 goto err_vsi;
14151         }
14152         vsi->base_queue = ret;
14153
14154         /* Update the FW view of the VSI. Force a reset of TC and queue
14155          * layout configurations.
14156          */
14157         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
14158         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
14159         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
14160         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
14161         if (vsi->type == I40E_VSI_MAIN)
14162                 i40e_rm_default_mac_filter(vsi, pf->hw.mac.perm_addr);
14163
14164         /* assign it some queues */
14165         ret = i40e_alloc_rings(vsi);
14166         if (ret)
14167                 goto err_rings;
14168
14169         /* map all of the rings to the q_vectors */
14170         i40e_vsi_map_rings_to_vectors(vsi);
14171         return vsi;
14172
14173 err_rings:
14174         i40e_vsi_free_q_vectors(vsi);
14175         if (vsi->netdev_registered) {
14176                 vsi->netdev_registered = false;
14177                 unregister_netdev(vsi->netdev);
14178                 free_netdev(vsi->netdev);
14179                 vsi->netdev = NULL;
14180         }
14181         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
14182 err_vsi:
14183         i40e_vsi_clear(vsi);
14184         return NULL;
14185 }
14186
14187 /**
14188  * i40e_vsi_setup - Set up a VSI by a given type
14189  * @pf: board private structure
14190  * @type: VSI type
14191  * @uplink_seid: the switch element to link to
14192  * @param1: usage depends upon VSI type. For VF types, indicates VF id
14193  *
14194  * This allocates the sw VSI structure and its queue resources, then add a VSI
14195  * to the identified VEB.
14196  *
14197  * Returns pointer to the successfully allocated and configure VSI sw struct on
14198  * success, otherwise returns NULL on failure.
14199  **/
14200 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
14201                                 u16 uplink_seid, u32 param1)
14202 {
14203         struct i40e_vsi *vsi = NULL;
14204         struct i40e_veb *veb = NULL;
14205         u16 alloc_queue_pairs;
14206         int ret, i;
14207         int v_idx;
14208
14209         /* The requested uplink_seid must be either
14210          *     - the PF's port seid
14211          *              no VEB is needed because this is the PF
14212          *              or this is a Flow Director special case VSI
14213          *     - seid of an existing VEB
14214          *     - seid of a VSI that owns an existing VEB
14215          *     - seid of a VSI that doesn't own a VEB
14216          *              a new VEB is created and the VSI becomes the owner
14217          *     - seid of the PF VSI, which is what creates the first VEB
14218          *              this is a special case of the previous
14219          *
14220          * Find which uplink_seid we were given and create a new VEB if needed
14221          */
14222         for (i = 0; i < I40E_MAX_VEB; i++) {
14223                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
14224                         veb = pf->veb[i];
14225                         break;
14226                 }
14227         }
14228
14229         if (!veb && uplink_seid != pf->mac_seid) {
14230
14231                 for (i = 0; i < pf->num_alloc_vsi; i++) {
14232                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
14233                                 vsi = pf->vsi[i];
14234                                 break;
14235                         }
14236                 }
14237                 if (!vsi) {
14238                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
14239                                  uplink_seid);
14240                         return NULL;
14241                 }
14242
14243                 if (vsi->uplink_seid == pf->mac_seid)
14244                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
14245                                              vsi->tc_config.enabled_tc);
14246                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
14247                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
14248                                              vsi->tc_config.enabled_tc);
14249                 if (veb) {
14250                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
14251                                 dev_info(&vsi->back->pdev->dev,
14252                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
14253                                 return NULL;
14254                         }
14255                         /* We come up by default in VEPA mode if SRIOV is not
14256                          * already enabled, in which case we can't force VEPA
14257                          * mode.
14258                          */
14259                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
14260                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
14261                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
14262                         }
14263                         i40e_config_bridge_mode(veb);
14264                 }
14265                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
14266                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
14267                                 veb = pf->veb[i];
14268                 }
14269                 if (!veb) {
14270                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
14271                         return NULL;
14272                 }
14273
14274                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
14275                 uplink_seid = veb->seid;
14276         }
14277
14278         /* get vsi sw struct */
14279         v_idx = i40e_vsi_mem_alloc(pf, type);
14280         if (v_idx < 0)
14281                 goto err_alloc;
14282         vsi = pf->vsi[v_idx];
14283         if (!vsi)
14284                 goto err_alloc;
14285         vsi->type = type;
14286         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
14287
14288         if (type == I40E_VSI_MAIN)
14289                 pf->lan_vsi = v_idx;
14290         else if (type == I40E_VSI_SRIOV)
14291                 vsi->vf_id = param1;
14292         /* assign it some queues */
14293         alloc_queue_pairs = vsi->alloc_queue_pairs *
14294                             (i40e_enabled_xdp_vsi(vsi) ? 2 : 1);
14295
14296         ret = i40e_get_lump(pf, pf->qp_pile, alloc_queue_pairs, vsi->idx);
14297         if (ret < 0) {
14298                 dev_info(&pf->pdev->dev,
14299                          "failed to get tracking for %d queues for VSI %d err=%d\n",
14300                          alloc_queue_pairs, vsi->seid, ret);
14301                 goto err_vsi;
14302         }
14303         vsi->base_queue = ret;
14304
14305         /* get a VSI from the hardware */
14306         vsi->uplink_seid = uplink_seid;
14307         ret = i40e_add_vsi(vsi);
14308         if (ret)
14309                 goto err_vsi;
14310
14311         switch (vsi->type) {
14312         /* setup the netdev if needed */
14313         case I40E_VSI_MAIN:
14314         case I40E_VSI_VMDQ2:
14315                 ret = i40e_config_netdev(vsi);
14316                 if (ret)
14317                         goto err_netdev;
14318                 ret = i40e_netif_set_realnum_tx_rx_queues(vsi);
14319                 if (ret)
14320                         goto err_netdev;
14321                 ret = register_netdev(vsi->netdev);
14322                 if (ret)
14323                         goto err_netdev;
14324                 vsi->netdev_registered = true;
14325                 netif_carrier_off(vsi->netdev);
14326 #ifdef CONFIG_I40E_DCB
14327                 /* Setup DCB netlink interface */
14328                 i40e_dcbnl_setup(vsi);
14329 #endif /* CONFIG_I40E_DCB */
14330                 fallthrough;
14331         case I40E_VSI_FDIR:
14332                 /* set up vectors and rings if needed */
14333                 ret = i40e_vsi_setup_vectors(vsi);
14334                 if (ret)
14335                         goto err_msix;
14336
14337                 ret = i40e_alloc_rings(vsi);
14338                 if (ret)
14339                         goto err_rings;
14340
14341                 /* map all of the rings to the q_vectors */
14342                 i40e_vsi_map_rings_to_vectors(vsi);
14343
14344                 i40e_vsi_reset_stats(vsi);
14345                 break;
14346         default:
14347                 /* no netdev or rings for the other VSI types */
14348                 break;
14349         }
14350
14351         if ((pf->hw_features & I40E_HW_RSS_AQ_CAPABLE) &&
14352             (vsi->type == I40E_VSI_VMDQ2)) {
14353                 ret = i40e_vsi_config_rss(vsi);
14354         }
14355         return vsi;
14356
14357 err_rings:
14358         i40e_vsi_free_q_vectors(vsi);
14359 err_msix:
14360         if (vsi->netdev_registered) {
14361                 vsi->netdev_registered = false;
14362                 unregister_netdev(vsi->netdev);
14363                 free_netdev(vsi->netdev);
14364                 vsi->netdev = NULL;
14365         }
14366 err_netdev:
14367         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
14368 err_vsi:
14369         i40e_vsi_clear(vsi);
14370 err_alloc:
14371         return NULL;
14372 }
14373
14374 /**
14375  * i40e_veb_get_bw_info - Query VEB BW information
14376  * @veb: the veb to query
14377  *
14378  * Query the Tx scheduler BW configuration data for given VEB
14379  **/
14380 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
14381 {
14382         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
14383         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
14384         struct i40e_pf *pf = veb->pf;
14385         struct i40e_hw *hw = &pf->hw;
14386         u32 tc_bw_max;
14387         int ret = 0;
14388         int i;
14389
14390         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
14391                                                   &bw_data, NULL);
14392         if (ret) {
14393                 dev_info(&pf->pdev->dev,
14394                          "query veb bw config failed, err %s aq_err %s\n",
14395                          i40e_stat_str(&pf->hw, ret),
14396                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
14397                 goto out;
14398         }
14399
14400         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
14401                                                    &ets_data, NULL);
14402         if (ret) {
14403                 dev_info(&pf->pdev->dev,
14404                          "query veb bw ets config failed, err %s aq_err %s\n",
14405                          i40e_stat_str(&pf->hw, ret),
14406                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
14407                 goto out;
14408         }
14409
14410         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
14411         veb->bw_max_quanta = ets_data.tc_bw_max;
14412         veb->is_abs_credits = bw_data.absolute_credits_enable;
14413         veb->enabled_tc = ets_data.tc_valid_bits;
14414         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
14415                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
14416         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
14417                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
14418                 veb->bw_tc_limit_credits[i] =
14419                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
14420                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
14421         }
14422
14423 out:
14424         return ret;
14425 }
14426
14427 /**
14428  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
14429  * @pf: board private structure
14430  *
14431  * On error: returns error code (negative)
14432  * On success: returns vsi index in PF (positive)
14433  **/
14434 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
14435 {
14436         int ret = -ENOENT;
14437         struct i40e_veb *veb;
14438         int i;
14439
14440         /* Need to protect the allocation of switch elements at the PF level */
14441         mutex_lock(&pf->switch_mutex);
14442
14443         /* VEB list may be fragmented if VEB creation/destruction has
14444          * been happening.  We can afford to do a quick scan to look
14445          * for any free slots in the list.
14446          *
14447          * find next empty veb slot, looping back around if necessary
14448          */
14449         i = 0;
14450         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
14451                 i++;
14452         if (i >= I40E_MAX_VEB) {
14453                 ret = -ENOMEM;
14454                 goto err_alloc_veb;  /* out of VEB slots! */
14455         }
14456
14457         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
14458         if (!veb) {
14459                 ret = -ENOMEM;
14460                 goto err_alloc_veb;
14461         }
14462         veb->pf = pf;
14463         veb->idx = i;
14464         veb->enabled_tc = 1;
14465
14466         pf->veb[i] = veb;
14467         ret = i;
14468 err_alloc_veb:
14469         mutex_unlock(&pf->switch_mutex);
14470         return ret;
14471 }
14472
14473 /**
14474  * i40e_switch_branch_release - Delete a branch of the switch tree
14475  * @branch: where to start deleting
14476  *
14477  * This uses recursion to find the tips of the branch to be
14478  * removed, deleting until we get back to and can delete this VEB.
14479  **/
14480 static void i40e_switch_branch_release(struct i40e_veb *branch)
14481 {
14482         struct i40e_pf *pf = branch->pf;
14483         u16 branch_seid = branch->seid;
14484         u16 veb_idx = branch->idx;
14485         int i;
14486
14487         /* release any VEBs on this VEB - RECURSION */
14488         for (i = 0; i < I40E_MAX_VEB; i++) {
14489                 if (!pf->veb[i])
14490                         continue;
14491                 if (pf->veb[i]->uplink_seid == branch->seid)
14492                         i40e_switch_branch_release(pf->veb[i]);
14493         }
14494
14495         /* Release the VSIs on this VEB, but not the owner VSI.
14496          *
14497          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
14498          *       the VEB itself, so don't use (*branch) after this loop.
14499          */
14500         for (i = 0; i < pf->num_alloc_vsi; i++) {
14501                 if (!pf->vsi[i])
14502                         continue;
14503                 if (pf->vsi[i]->uplink_seid == branch_seid &&
14504                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
14505                         i40e_vsi_release(pf->vsi[i]);
14506                 }
14507         }
14508
14509         /* There's one corner case where the VEB might not have been
14510          * removed, so double check it here and remove it if needed.
14511          * This case happens if the veb was created from the debugfs
14512          * commands and no VSIs were added to it.
14513          */
14514         if (pf->veb[veb_idx])
14515                 i40e_veb_release(pf->veb[veb_idx]);
14516 }
14517
14518 /**
14519  * i40e_veb_clear - remove veb struct
14520  * @veb: the veb to remove
14521  **/
14522 static void i40e_veb_clear(struct i40e_veb *veb)
14523 {
14524         if (!veb)
14525                 return;
14526
14527         if (veb->pf) {
14528                 struct i40e_pf *pf = veb->pf;
14529
14530                 mutex_lock(&pf->switch_mutex);
14531                 if (pf->veb[veb->idx] == veb)
14532                         pf->veb[veb->idx] = NULL;
14533                 mutex_unlock(&pf->switch_mutex);
14534         }
14535
14536         kfree(veb);
14537 }
14538
14539 /**
14540  * i40e_veb_release - Delete a VEB and free its resources
14541  * @veb: the VEB being removed
14542  **/
14543 void i40e_veb_release(struct i40e_veb *veb)
14544 {
14545         struct i40e_vsi *vsi = NULL;
14546         struct i40e_pf *pf;
14547         int i, n = 0;
14548
14549         pf = veb->pf;
14550
14551         /* find the remaining VSI and check for extras */
14552         for (i = 0; i < pf->num_alloc_vsi; i++) {
14553                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
14554                         n++;
14555                         vsi = pf->vsi[i];
14556                 }
14557         }
14558         if (n != 1) {
14559                 dev_info(&pf->pdev->dev,
14560                          "can't remove VEB %d with %d VSIs left\n",
14561                          veb->seid, n);
14562                 return;
14563         }
14564
14565         /* move the remaining VSI to uplink veb */
14566         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
14567         if (veb->uplink_seid) {
14568                 vsi->uplink_seid = veb->uplink_seid;
14569                 if (veb->uplink_seid == pf->mac_seid)
14570                         vsi->veb_idx = I40E_NO_VEB;
14571                 else
14572                         vsi->veb_idx = veb->veb_idx;
14573         } else {
14574                 /* floating VEB */
14575                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
14576                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
14577         }
14578
14579         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
14580         i40e_veb_clear(veb);
14581 }
14582
14583 /**
14584  * i40e_add_veb - create the VEB in the switch
14585  * @veb: the VEB to be instantiated
14586  * @vsi: the controlling VSI
14587  **/
14588 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
14589 {
14590         struct i40e_pf *pf = veb->pf;
14591         bool enable_stats = !!(pf->flags & I40E_FLAG_VEB_STATS_ENABLED);
14592         int ret;
14593
14594         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
14595                               veb->enabled_tc, false,
14596                               &veb->seid, enable_stats, NULL);
14597
14598         /* get a VEB from the hardware */
14599         if (ret) {
14600                 dev_info(&pf->pdev->dev,
14601                          "couldn't add VEB, err %s aq_err %s\n",
14602                          i40e_stat_str(&pf->hw, ret),
14603                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
14604                 return -EPERM;
14605         }
14606
14607         /* get statistics counter */
14608         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
14609                                          &veb->stats_idx, NULL, NULL, NULL);
14610         if (ret) {
14611                 dev_info(&pf->pdev->dev,
14612                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
14613                          i40e_stat_str(&pf->hw, ret),
14614                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
14615                 return -EPERM;
14616         }
14617         ret = i40e_veb_get_bw_info(veb);
14618         if (ret) {
14619                 dev_info(&pf->pdev->dev,
14620                          "couldn't get VEB bw info, err %s aq_err %s\n",
14621                          i40e_stat_str(&pf->hw, ret),
14622                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
14623                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
14624                 return -ENOENT;
14625         }
14626
14627         vsi->uplink_seid = veb->seid;
14628         vsi->veb_idx = veb->idx;
14629         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
14630
14631         return 0;
14632 }
14633
14634 /**
14635  * i40e_veb_setup - Set up a VEB
14636  * @pf: board private structure
14637  * @flags: VEB setup flags
14638  * @uplink_seid: the switch element to link to
14639  * @vsi_seid: the initial VSI seid
14640  * @enabled_tc: Enabled TC bit-map
14641  *
14642  * This allocates the sw VEB structure and links it into the switch
14643  * It is possible and legal for this to be a duplicate of an already
14644  * existing VEB.  It is also possible for both uplink and vsi seids
14645  * to be zero, in order to create a floating VEB.
14646  *
14647  * Returns pointer to the successfully allocated VEB sw struct on
14648  * success, otherwise returns NULL on failure.
14649  **/
14650 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
14651                                 u16 uplink_seid, u16 vsi_seid,
14652                                 u8 enabled_tc)
14653 {
14654         struct i40e_veb *veb, *uplink_veb = NULL;
14655         int vsi_idx, veb_idx;
14656         int ret;
14657
14658         /* if one seid is 0, the other must be 0 to create a floating relay */
14659         if ((uplink_seid == 0 || vsi_seid == 0) &&
14660             (uplink_seid + vsi_seid != 0)) {
14661                 dev_info(&pf->pdev->dev,
14662                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
14663                          uplink_seid, vsi_seid);
14664                 return NULL;
14665         }
14666
14667         /* make sure there is such a vsi and uplink */
14668         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
14669                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
14670                         break;
14671         if (vsi_idx == pf->num_alloc_vsi && vsi_seid != 0) {
14672                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
14673                          vsi_seid);
14674                 return NULL;
14675         }
14676
14677         if (uplink_seid && uplink_seid != pf->mac_seid) {
14678                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
14679                         if (pf->veb[veb_idx] &&
14680                             pf->veb[veb_idx]->seid == uplink_seid) {
14681                                 uplink_veb = pf->veb[veb_idx];
14682                                 break;
14683                         }
14684                 }
14685                 if (!uplink_veb) {
14686                         dev_info(&pf->pdev->dev,
14687                                  "uplink seid %d not found\n", uplink_seid);
14688                         return NULL;
14689                 }
14690         }
14691
14692         /* get veb sw struct */
14693         veb_idx = i40e_veb_mem_alloc(pf);
14694         if (veb_idx < 0)
14695                 goto err_alloc;
14696         veb = pf->veb[veb_idx];
14697         veb->flags = flags;
14698         veb->uplink_seid = uplink_seid;
14699         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
14700         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
14701
14702         /* create the VEB in the switch */
14703         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
14704         if (ret)
14705                 goto err_veb;
14706         if (vsi_idx == pf->lan_vsi)
14707                 pf->lan_veb = veb->idx;
14708
14709         return veb;
14710
14711 err_veb:
14712         i40e_veb_clear(veb);
14713 err_alloc:
14714         return NULL;
14715 }
14716
14717 /**
14718  * i40e_setup_pf_switch_element - set PF vars based on switch type
14719  * @pf: board private structure
14720  * @ele: element we are building info from
14721  * @num_reported: total number of elements
14722  * @printconfig: should we print the contents
14723  *
14724  * helper function to assist in extracting a few useful SEID values.
14725  **/
14726 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
14727                                 struct i40e_aqc_switch_config_element_resp *ele,
14728                                 u16 num_reported, bool printconfig)
14729 {
14730         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
14731         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
14732         u8 element_type = ele->element_type;
14733         u16 seid = le16_to_cpu(ele->seid);
14734
14735         if (printconfig)
14736                 dev_info(&pf->pdev->dev,
14737                          "type=%d seid=%d uplink=%d downlink=%d\n",
14738                          element_type, seid, uplink_seid, downlink_seid);
14739
14740         switch (element_type) {
14741         case I40E_SWITCH_ELEMENT_TYPE_MAC:
14742                 pf->mac_seid = seid;
14743                 break;
14744         case I40E_SWITCH_ELEMENT_TYPE_VEB:
14745                 /* Main VEB? */
14746                 if (uplink_seid != pf->mac_seid)
14747                         break;
14748                 if (pf->lan_veb >= I40E_MAX_VEB) {
14749                         int v;
14750
14751                         /* find existing or else empty VEB */
14752                         for (v = 0; v < I40E_MAX_VEB; v++) {
14753                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
14754                                         pf->lan_veb = v;
14755                                         break;
14756                                 }
14757                         }
14758                         if (pf->lan_veb >= I40E_MAX_VEB) {
14759                                 v = i40e_veb_mem_alloc(pf);
14760                                 if (v < 0)
14761                                         break;
14762                                 pf->lan_veb = v;
14763                         }
14764                 }
14765                 if (pf->lan_veb >= I40E_MAX_VEB)
14766                         break;
14767
14768                 pf->veb[pf->lan_veb]->seid = seid;
14769                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
14770                 pf->veb[pf->lan_veb]->pf = pf;
14771                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
14772                 break;
14773         case I40E_SWITCH_ELEMENT_TYPE_VSI:
14774                 if (num_reported != 1)
14775                         break;
14776                 /* This is immediately after a reset so we can assume this is
14777                  * the PF's VSI
14778                  */
14779                 pf->mac_seid = uplink_seid;
14780                 pf->pf_seid = downlink_seid;
14781                 pf->main_vsi_seid = seid;
14782                 if (printconfig)
14783                         dev_info(&pf->pdev->dev,
14784                                  "pf_seid=%d main_vsi_seid=%d\n",
14785                                  pf->pf_seid, pf->main_vsi_seid);
14786                 break;
14787         case I40E_SWITCH_ELEMENT_TYPE_PF:
14788         case I40E_SWITCH_ELEMENT_TYPE_VF:
14789         case I40E_SWITCH_ELEMENT_TYPE_EMP:
14790         case I40E_SWITCH_ELEMENT_TYPE_BMC:
14791         case I40E_SWITCH_ELEMENT_TYPE_PE:
14792         case I40E_SWITCH_ELEMENT_TYPE_PA:
14793                 /* ignore these for now */
14794                 break;
14795         default:
14796                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
14797                          element_type, seid);
14798                 break;
14799         }
14800 }
14801
14802 /**
14803  * i40e_fetch_switch_configuration - Get switch config from firmware
14804  * @pf: board private structure
14805  * @printconfig: should we print the contents
14806  *
14807  * Get the current switch configuration from the device and
14808  * extract a few useful SEID values.
14809  **/
14810 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
14811 {
14812         struct i40e_aqc_get_switch_config_resp *sw_config;
14813         u16 next_seid = 0;
14814         int ret = 0;
14815         u8 *aq_buf;
14816         int i;
14817
14818         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
14819         if (!aq_buf)
14820                 return -ENOMEM;
14821
14822         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
14823         do {
14824                 u16 num_reported, num_total;
14825
14826                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
14827                                                 I40E_AQ_LARGE_BUF,
14828                                                 &next_seid, NULL);
14829                 if (ret) {
14830                         dev_info(&pf->pdev->dev,
14831                                  "get switch config failed err %s aq_err %s\n",
14832                                  i40e_stat_str(&pf->hw, ret),
14833                                  i40e_aq_str(&pf->hw,
14834                                              pf->hw.aq.asq_last_status));
14835                         kfree(aq_buf);
14836                         return -ENOENT;
14837                 }
14838
14839                 num_reported = le16_to_cpu(sw_config->header.num_reported);
14840                 num_total = le16_to_cpu(sw_config->header.num_total);
14841
14842                 if (printconfig)
14843                         dev_info(&pf->pdev->dev,
14844                                  "header: %d reported %d total\n",
14845                                  num_reported, num_total);
14846
14847                 for (i = 0; i < num_reported; i++) {
14848                         struct i40e_aqc_switch_config_element_resp *ele =
14849                                 &sw_config->element[i];
14850
14851                         i40e_setup_pf_switch_element(pf, ele, num_reported,
14852                                                      printconfig);
14853                 }
14854         } while (next_seid != 0);
14855
14856         kfree(aq_buf);
14857         return ret;
14858 }
14859
14860 /**
14861  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
14862  * @pf: board private structure
14863  * @reinit: if the Main VSI needs to re-initialized.
14864  * @lock_acquired: indicates whether or not the lock has been acquired
14865  *
14866  * Returns 0 on success, negative value on failure
14867  **/
14868 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit, bool lock_acquired)
14869 {
14870         u16 flags = 0;
14871         int ret;
14872
14873         /* find out what's out there already */
14874         ret = i40e_fetch_switch_configuration(pf, false);
14875         if (ret) {
14876                 dev_info(&pf->pdev->dev,
14877                          "couldn't fetch switch config, err %s aq_err %s\n",
14878                          i40e_stat_str(&pf->hw, ret),
14879                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
14880                 return ret;
14881         }
14882         i40e_pf_reset_stats(pf);
14883
14884         /* set the switch config bit for the whole device to
14885          * support limited promisc or true promisc
14886          * when user requests promisc. The default is limited
14887          * promisc.
14888         */
14889
14890         if ((pf->hw.pf_id == 0) &&
14891             !(pf->flags & I40E_FLAG_TRUE_PROMISC_SUPPORT)) {
14892                 flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
14893                 pf->last_sw_conf_flags = flags;
14894         }
14895
14896         if (pf->hw.pf_id == 0) {
14897                 u16 valid_flags;
14898
14899                 valid_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
14900                 ret = i40e_aq_set_switch_config(&pf->hw, flags, valid_flags, 0,
14901                                                 NULL);
14902                 if (ret && pf->hw.aq.asq_last_status != I40E_AQ_RC_ESRCH) {
14903                         dev_info(&pf->pdev->dev,
14904                                  "couldn't set switch config bits, err %s aq_err %s\n",
14905                                  i40e_stat_str(&pf->hw, ret),
14906                                  i40e_aq_str(&pf->hw,
14907                                              pf->hw.aq.asq_last_status));
14908                         /* not a fatal problem, just keep going */
14909                 }
14910                 pf->last_sw_conf_valid_flags = valid_flags;
14911         }
14912
14913         /* first time setup */
14914         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
14915                 struct i40e_vsi *vsi = NULL;
14916                 u16 uplink_seid;
14917
14918                 /* Set up the PF VSI associated with the PF's main VSI
14919                  * that is already in the HW switch
14920                  */
14921                 if (pf->lan_veb < I40E_MAX_VEB && pf->veb[pf->lan_veb])
14922                         uplink_seid = pf->veb[pf->lan_veb]->seid;
14923                 else
14924                         uplink_seid = pf->mac_seid;
14925                 if (pf->lan_vsi == I40E_NO_VSI)
14926                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
14927                 else if (reinit)
14928                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
14929                 if (!vsi) {
14930                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
14931                         i40e_cloud_filter_exit(pf);
14932                         i40e_fdir_teardown(pf);
14933                         return -EAGAIN;
14934                 }
14935         } else {
14936                 /* force a reset of TC and queue layout configurations */
14937                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
14938
14939                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
14940                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
14941                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
14942         }
14943         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
14944
14945         i40e_fdir_sb_setup(pf);
14946
14947         /* Setup static PF queue filter control settings */
14948         ret = i40e_setup_pf_filter_control(pf);
14949         if (ret) {
14950                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
14951                          ret);
14952                 /* Failure here should not stop continuing other steps */
14953         }
14954
14955         /* enable RSS in the HW, even for only one queue, as the stack can use
14956          * the hash
14957          */
14958         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
14959                 i40e_pf_config_rss(pf);
14960
14961         /* fill in link information and enable LSE reporting */
14962         i40e_link_event(pf);
14963
14964         /* Initialize user-specific link properties */
14965         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
14966                                   I40E_AQ_AN_COMPLETED) ? true : false);
14967
14968         i40e_ptp_init(pf);
14969
14970         if (!lock_acquired)
14971                 rtnl_lock();
14972
14973         /* repopulate tunnel port filters */
14974         udp_tunnel_nic_reset_ntf(pf->vsi[pf->lan_vsi]->netdev);
14975
14976         if (!lock_acquired)
14977                 rtnl_unlock();
14978
14979         return ret;
14980 }
14981
14982 /**
14983  * i40e_determine_queue_usage - Work out queue distribution
14984  * @pf: board private structure
14985  **/
14986 static void i40e_determine_queue_usage(struct i40e_pf *pf)
14987 {
14988         int queues_left;
14989         int q_max;
14990
14991         pf->num_lan_qps = 0;
14992
14993         /* Find the max queues to be put into basic use.  We'll always be
14994          * using TC0, whether or not DCB is running, and TC0 will get the
14995          * big RSS set.
14996          */
14997         queues_left = pf->hw.func_caps.num_tx_qp;
14998
14999         if ((queues_left == 1) ||
15000             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
15001                 /* one qp for PF, no queues for anything else */
15002                 queues_left = 0;
15003                 pf->alloc_rss_size = pf->num_lan_qps = 1;
15004
15005                 /* make sure all the fancies are disabled */
15006                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
15007                                I40E_FLAG_IWARP_ENABLED  |
15008                                I40E_FLAG_FD_SB_ENABLED  |
15009                                I40E_FLAG_FD_ATR_ENABLED |
15010                                I40E_FLAG_DCB_CAPABLE    |
15011                                I40E_FLAG_DCB_ENABLED    |
15012                                I40E_FLAG_SRIOV_ENABLED  |
15013                                I40E_FLAG_VMDQ_ENABLED);
15014                 pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
15015         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
15016                                   I40E_FLAG_FD_SB_ENABLED |
15017                                   I40E_FLAG_FD_ATR_ENABLED |
15018                                   I40E_FLAG_DCB_CAPABLE))) {
15019                 /* one qp for PF */
15020                 pf->alloc_rss_size = pf->num_lan_qps = 1;
15021                 queues_left -= pf->num_lan_qps;
15022
15023                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
15024                                I40E_FLAG_IWARP_ENABLED  |
15025                                I40E_FLAG_FD_SB_ENABLED  |
15026                                I40E_FLAG_FD_ATR_ENABLED |
15027                                I40E_FLAG_DCB_ENABLED    |
15028                                I40E_FLAG_VMDQ_ENABLED);
15029                 pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
15030         } else {
15031                 /* Not enough queues for all TCs */
15032                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
15033                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
15034                         pf->flags &= ~(I40E_FLAG_DCB_CAPABLE |
15035                                         I40E_FLAG_DCB_ENABLED);
15036                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
15037                 }
15038
15039                 /* limit lan qps to the smaller of qps, cpus or msix */
15040                 q_max = max_t(int, pf->rss_size_max, num_online_cpus());
15041                 q_max = min_t(int, q_max, pf->hw.func_caps.num_tx_qp);
15042                 q_max = min_t(int, q_max, pf->hw.func_caps.num_msix_vectors);
15043                 pf->num_lan_qps = q_max;
15044
15045                 queues_left -= pf->num_lan_qps;
15046         }
15047
15048         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
15049                 if (queues_left > 1) {
15050                         queues_left -= 1; /* save 1 queue for FD */
15051                 } else {
15052                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
15053                         pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
15054                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
15055                 }
15056         }
15057
15058         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
15059             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
15060                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
15061                                         (queues_left / pf->num_vf_qps));
15062                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
15063         }
15064
15065         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
15066             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
15067                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
15068                                           (queues_left / pf->num_vmdq_qps));
15069                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
15070         }
15071
15072         pf->queues_left = queues_left;
15073         dev_dbg(&pf->pdev->dev,
15074                 "qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
15075                 pf->hw.func_caps.num_tx_qp,
15076                 !!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
15077                 pf->num_lan_qps, pf->alloc_rss_size, pf->num_req_vfs,
15078                 pf->num_vf_qps, pf->num_vmdq_vsis, pf->num_vmdq_qps,
15079                 queues_left);
15080 }
15081
15082 /**
15083  * i40e_setup_pf_filter_control - Setup PF static filter control
15084  * @pf: PF to be setup
15085  *
15086  * i40e_setup_pf_filter_control sets up a PF's initial filter control
15087  * settings. If PE/FCoE are enabled then it will also set the per PF
15088  * based filter sizes required for them. It also enables Flow director,
15089  * ethertype and macvlan type filter settings for the pf.
15090  *
15091  * Returns 0 on success, negative on failure
15092  **/
15093 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
15094 {
15095         struct i40e_filter_control_settings *settings = &pf->filter_settings;
15096
15097         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
15098
15099         /* Flow Director is enabled */
15100         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
15101                 settings->enable_fdir = true;
15102
15103         /* Ethtype and MACVLAN filters enabled for PF */
15104         settings->enable_ethtype = true;
15105         settings->enable_macvlan = true;
15106
15107         if (i40e_set_filter_control(&pf->hw, settings))
15108                 return -ENOENT;
15109
15110         return 0;
15111 }
15112
15113 #define INFO_STRING_LEN 255
15114 #define REMAIN(__x) (INFO_STRING_LEN - (__x))
15115 static void i40e_print_features(struct i40e_pf *pf)
15116 {
15117         struct i40e_hw *hw = &pf->hw;
15118         char *buf;
15119         int i;
15120
15121         buf = kmalloc(INFO_STRING_LEN, GFP_KERNEL);
15122         if (!buf)
15123                 return;
15124
15125         i = snprintf(buf, INFO_STRING_LEN, "Features: PF-id[%d]", hw->pf_id);
15126 #ifdef CONFIG_PCI_IOV
15127         i += scnprintf(&buf[i], REMAIN(i), " VFs: %d", pf->num_req_vfs);
15128 #endif
15129         i += scnprintf(&buf[i], REMAIN(i), " VSIs: %d QP: %d",
15130                       pf->hw.func_caps.num_vsis,
15131                       pf->vsi[pf->lan_vsi]->num_queue_pairs);
15132         if (pf->flags & I40E_FLAG_RSS_ENABLED)
15133                 i += scnprintf(&buf[i], REMAIN(i), " RSS");
15134         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
15135                 i += scnprintf(&buf[i], REMAIN(i), " FD_ATR");
15136         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
15137                 i += scnprintf(&buf[i], REMAIN(i), " FD_SB");
15138                 i += scnprintf(&buf[i], REMAIN(i), " NTUPLE");
15139         }
15140         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
15141                 i += scnprintf(&buf[i], REMAIN(i), " DCB");
15142         i += scnprintf(&buf[i], REMAIN(i), " VxLAN");
15143         i += scnprintf(&buf[i], REMAIN(i), " Geneve");
15144         if (pf->flags & I40E_FLAG_PTP)
15145                 i += scnprintf(&buf[i], REMAIN(i), " PTP");
15146         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
15147                 i += scnprintf(&buf[i], REMAIN(i), " VEB");
15148         else
15149                 i += scnprintf(&buf[i], REMAIN(i), " VEPA");
15150
15151         dev_info(&pf->pdev->dev, "%s\n", buf);
15152         kfree(buf);
15153         WARN_ON(i > INFO_STRING_LEN);
15154 }
15155
15156 /**
15157  * i40e_get_platform_mac_addr - get platform-specific MAC address
15158  * @pdev: PCI device information struct
15159  * @pf: board private structure
15160  *
15161  * Look up the MAC address for the device. First we'll try
15162  * eth_platform_get_mac_address, which will check Open Firmware, or arch
15163  * specific fallback. Otherwise, we'll default to the stored value in
15164  * firmware.
15165  **/
15166 static void i40e_get_platform_mac_addr(struct pci_dev *pdev, struct i40e_pf *pf)
15167 {
15168         if (eth_platform_get_mac_address(&pdev->dev, pf->hw.mac.addr))
15169                 i40e_get_mac_addr(&pf->hw, pf->hw.mac.addr);
15170 }
15171
15172 /**
15173  * i40e_set_fec_in_flags - helper function for setting FEC options in flags
15174  * @fec_cfg: FEC option to set in flags
15175  * @flags: ptr to flags in which we set FEC option
15176  **/
15177 void i40e_set_fec_in_flags(u8 fec_cfg, u32 *flags)
15178 {
15179         if (fec_cfg & I40E_AQ_SET_FEC_AUTO)
15180                 *flags |= I40E_FLAG_RS_FEC | I40E_FLAG_BASE_R_FEC;
15181         if ((fec_cfg & I40E_AQ_SET_FEC_REQUEST_RS) ||
15182             (fec_cfg & I40E_AQ_SET_FEC_ABILITY_RS)) {
15183                 *flags |= I40E_FLAG_RS_FEC;
15184                 *flags &= ~I40E_FLAG_BASE_R_FEC;
15185         }
15186         if ((fec_cfg & I40E_AQ_SET_FEC_REQUEST_KR) ||
15187             (fec_cfg & I40E_AQ_SET_FEC_ABILITY_KR)) {
15188                 *flags |= I40E_FLAG_BASE_R_FEC;
15189                 *flags &= ~I40E_FLAG_RS_FEC;
15190         }
15191         if (fec_cfg == 0)
15192                 *flags &= ~(I40E_FLAG_RS_FEC | I40E_FLAG_BASE_R_FEC);
15193 }
15194
15195 /**
15196  * i40e_check_recovery_mode - check if we are running transition firmware
15197  * @pf: board private structure
15198  *
15199  * Check registers indicating the firmware runs in recovery mode. Sets the
15200  * appropriate driver state.
15201  *
15202  * Returns true if the recovery mode was detected, false otherwise
15203  **/
15204 static bool i40e_check_recovery_mode(struct i40e_pf *pf)
15205 {
15206         u32 val = rd32(&pf->hw, I40E_GL_FWSTS);
15207
15208         if (val & I40E_GL_FWSTS_FWS1B_MASK) {
15209                 dev_crit(&pf->pdev->dev, "Firmware recovery mode detected. Limiting functionality.\n");
15210                 dev_crit(&pf->pdev->dev, "Refer to the Intel(R) Ethernet Adapters and Devices User Guide for details on firmware recovery mode.\n");
15211                 set_bit(__I40E_RECOVERY_MODE, pf->state);
15212
15213                 return true;
15214         }
15215         if (test_bit(__I40E_RECOVERY_MODE, pf->state))
15216                 dev_info(&pf->pdev->dev, "Please do Power-On Reset to initialize adapter in normal mode with full functionality.\n");
15217
15218         return false;
15219 }
15220
15221 /**
15222  * i40e_pf_loop_reset - perform reset in a loop.
15223  * @pf: board private structure
15224  *
15225  * This function is useful when a NIC is about to enter recovery mode.
15226  * When a NIC's internal data structures are corrupted the NIC's
15227  * firmware is going to enter recovery mode.
15228  * Right after a POR it takes about 7 minutes for firmware to enter
15229  * recovery mode. Until that time a NIC is in some kind of intermediate
15230  * state. After that time period the NIC almost surely enters
15231  * recovery mode. The only way for a driver to detect intermediate
15232  * state is to issue a series of pf-resets and check a return value.
15233  * If a PF reset returns success then the firmware could be in recovery
15234  * mode so the caller of this code needs to check for recovery mode
15235  * if this function returns success. There is a little chance that
15236  * firmware will hang in intermediate state forever.
15237  * Since waiting 7 minutes is quite a lot of time this function waits
15238  * 10 seconds and then gives up by returning an error.
15239  *
15240  * Return 0 on success, negative on failure.
15241  **/
15242 static i40e_status i40e_pf_loop_reset(struct i40e_pf *pf)
15243 {
15244         /* wait max 10 seconds for PF reset to succeed */
15245         const unsigned long time_end = jiffies + 10 * HZ;
15246
15247         struct i40e_hw *hw = &pf->hw;
15248         i40e_status ret;
15249
15250         ret = i40e_pf_reset(hw);
15251         while (ret != I40E_SUCCESS && time_before(jiffies, time_end)) {
15252                 usleep_range(10000, 20000);
15253                 ret = i40e_pf_reset(hw);
15254         }
15255
15256         if (ret == I40E_SUCCESS)
15257                 pf->pfr_count++;
15258         else
15259                 dev_info(&pf->pdev->dev, "PF reset failed: %d\n", ret);
15260
15261         return ret;
15262 }
15263
15264 /**
15265  * i40e_check_fw_empr - check if FW issued unexpected EMP Reset
15266  * @pf: board private structure
15267  *
15268  * Check FW registers to determine if FW issued unexpected EMP Reset.
15269  * Every time when unexpected EMP Reset occurs the FW increments
15270  * a counter of unexpected EMP Resets. When the counter reaches 10
15271  * the FW should enter the Recovery mode
15272  *
15273  * Returns true if FW issued unexpected EMP Reset
15274  **/
15275 static bool i40e_check_fw_empr(struct i40e_pf *pf)
15276 {
15277         const u32 fw_sts = rd32(&pf->hw, I40E_GL_FWSTS) &
15278                            I40E_GL_FWSTS_FWS1B_MASK;
15279         return (fw_sts > I40E_GL_FWSTS_FWS1B_EMPR_0) &&
15280                (fw_sts <= I40E_GL_FWSTS_FWS1B_EMPR_10);
15281 }
15282
15283 /**
15284  * i40e_handle_resets - handle EMP resets and PF resets
15285  * @pf: board private structure
15286  *
15287  * Handle both EMP resets and PF resets and conclude whether there are
15288  * any issues regarding these resets. If there are any issues then
15289  * generate log entry.
15290  *
15291  * Return 0 if NIC is healthy or negative value when there are issues
15292  * with resets
15293  **/
15294 static i40e_status i40e_handle_resets(struct i40e_pf *pf)
15295 {
15296         const i40e_status pfr = i40e_pf_loop_reset(pf);
15297         const bool is_empr = i40e_check_fw_empr(pf);
15298
15299         if (is_empr || pfr != I40E_SUCCESS)
15300                 dev_crit(&pf->pdev->dev, "Entering recovery mode due to repeated FW resets. This may take several minutes. Refer to the Intel(R) Ethernet Adapters and Devices User Guide.\n");
15301
15302         return is_empr ? I40E_ERR_RESET_FAILED : pfr;
15303 }
15304
15305 /**
15306  * i40e_init_recovery_mode - initialize subsystems needed in recovery mode
15307  * @pf: board private structure
15308  * @hw: ptr to the hardware info
15309  *
15310  * This function does a minimal setup of all subsystems needed for running
15311  * recovery mode.
15312  *
15313  * Returns 0 on success, negative on failure
15314  **/
15315 static int i40e_init_recovery_mode(struct i40e_pf *pf, struct i40e_hw *hw)
15316 {
15317         struct i40e_vsi *vsi;
15318         int err;
15319         int v_idx;
15320
15321         pci_save_state(pf->pdev);
15322
15323         /* set up periodic task facility */
15324         timer_setup(&pf->service_timer, i40e_service_timer, 0);
15325         pf->service_timer_period = HZ;
15326
15327         INIT_WORK(&pf->service_task, i40e_service_task);
15328         clear_bit(__I40E_SERVICE_SCHED, pf->state);
15329
15330         err = i40e_init_interrupt_scheme(pf);
15331         if (err)
15332                 goto err_switch_setup;
15333
15334         /* The number of VSIs reported by the FW is the minimum guaranteed
15335          * to us; HW supports far more and we share the remaining pool with
15336          * the other PFs. We allocate space for more than the guarantee with
15337          * the understanding that we might not get them all later.
15338          */
15339         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
15340                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
15341         else
15342                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
15343
15344         /* Set up the vsi struct and our local tracking of the MAIN PF vsi. */
15345         pf->vsi = kcalloc(pf->num_alloc_vsi, sizeof(struct i40e_vsi *),
15346                           GFP_KERNEL);
15347         if (!pf->vsi) {
15348                 err = -ENOMEM;
15349                 goto err_switch_setup;
15350         }
15351
15352         /* We allocate one VSI which is needed as absolute minimum
15353          * in order to register the netdev
15354          */
15355         v_idx = i40e_vsi_mem_alloc(pf, I40E_VSI_MAIN);
15356         if (v_idx < 0) {
15357                 err = v_idx;
15358                 goto err_switch_setup;
15359         }
15360         pf->lan_vsi = v_idx;
15361         vsi = pf->vsi[v_idx];
15362         if (!vsi) {
15363                 err = -EFAULT;
15364                 goto err_switch_setup;
15365         }
15366         vsi->alloc_queue_pairs = 1;
15367         err = i40e_config_netdev(vsi);
15368         if (err)
15369                 goto err_switch_setup;
15370         err = register_netdev(vsi->netdev);
15371         if (err)
15372                 goto err_switch_setup;
15373         vsi->netdev_registered = true;
15374         i40e_dbg_pf_init(pf);
15375
15376         err = i40e_setup_misc_vector_for_recovery_mode(pf);
15377         if (err)
15378                 goto err_switch_setup;
15379
15380         /* tell the firmware that we're starting */
15381         i40e_send_version(pf);
15382
15383         /* since everything's happy, start the service_task timer */
15384         mod_timer(&pf->service_timer,
15385                   round_jiffies(jiffies + pf->service_timer_period));
15386
15387         return 0;
15388
15389 err_switch_setup:
15390         i40e_reset_interrupt_capability(pf);
15391         del_timer_sync(&pf->service_timer);
15392         i40e_shutdown_adminq(hw);
15393         iounmap(hw->hw_addr);
15394         pci_disable_pcie_error_reporting(pf->pdev);
15395         pci_release_mem_regions(pf->pdev);
15396         pci_disable_device(pf->pdev);
15397         kfree(pf);
15398
15399         return err;
15400 }
15401
15402 /**
15403  * i40e_set_subsystem_device_id - set subsystem device id
15404  * @hw: pointer to the hardware info
15405  *
15406  * Set PCI subsystem device id either from a pci_dev structure or
15407  * a specific FW register.
15408  **/
15409 static inline void i40e_set_subsystem_device_id(struct i40e_hw *hw)
15410 {
15411         struct pci_dev *pdev = ((struct i40e_pf *)hw->back)->pdev;
15412
15413         hw->subsystem_device_id = pdev->subsystem_device ?
15414                 pdev->subsystem_device :
15415                 (ushort)(rd32(hw, I40E_PFPCI_SUBSYSID) & USHRT_MAX);
15416 }
15417
15418 /**
15419  * i40e_probe - Device initialization routine
15420  * @pdev: PCI device information struct
15421  * @ent: entry in i40e_pci_tbl
15422  *
15423  * i40e_probe initializes a PF identified by a pci_dev structure.
15424  * The OS initialization, configuring of the PF private structure,
15425  * and a hardware reset occur.
15426  *
15427  * Returns 0 on success, negative on failure
15428  **/
15429 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
15430 {
15431         struct i40e_aq_get_phy_abilities_resp abilities;
15432 #ifdef CONFIG_I40E_DCB
15433         enum i40e_get_fw_lldp_status_resp lldp_status;
15434         i40e_status status;
15435 #endif /* CONFIG_I40E_DCB */
15436         struct i40e_pf *pf;
15437         struct i40e_hw *hw;
15438         static u16 pfs_found;
15439         u16 wol_nvm_bits;
15440         u16 link_status;
15441         int err;
15442         u32 val;
15443         u32 i;
15444
15445         err = pci_enable_device_mem(pdev);
15446         if (err)
15447                 return err;
15448
15449         /* set up for high or low dma */
15450         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
15451         if (err) {
15452                 dev_err(&pdev->dev,
15453                         "DMA configuration failed: 0x%x\n", err);
15454                 goto err_dma;
15455         }
15456
15457         /* set up pci connections */
15458         err = pci_request_mem_regions(pdev, i40e_driver_name);
15459         if (err) {
15460                 dev_info(&pdev->dev,
15461                          "pci_request_selected_regions failed %d\n", err);
15462                 goto err_pci_reg;
15463         }
15464
15465         pci_enable_pcie_error_reporting(pdev);
15466         pci_set_master(pdev);
15467
15468         /* Now that we have a PCI connection, we need to do the
15469          * low level device setup.  This is primarily setting up
15470          * the Admin Queue structures and then querying for the
15471          * device's current profile information.
15472          */
15473         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
15474         if (!pf) {
15475                 err = -ENOMEM;
15476                 goto err_pf_alloc;
15477         }
15478         pf->next_vsi = 0;
15479         pf->pdev = pdev;
15480         set_bit(__I40E_DOWN, pf->state);
15481
15482         hw = &pf->hw;
15483         hw->back = pf;
15484
15485         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
15486                                 I40E_MAX_CSR_SPACE);
15487         /* We believe that the highest register to read is
15488          * I40E_GLGEN_STAT_CLEAR, so we check if the BAR size
15489          * is not less than that before mapping to prevent a
15490          * kernel panic.
15491          */
15492         if (pf->ioremap_len < I40E_GLGEN_STAT_CLEAR) {
15493                 dev_err(&pdev->dev, "Cannot map registers, bar size 0x%X too small, aborting\n",
15494                         pf->ioremap_len);
15495                 err = -ENOMEM;
15496                 goto err_ioremap;
15497         }
15498         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
15499         if (!hw->hw_addr) {
15500                 err = -EIO;
15501                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
15502                          (unsigned int)pci_resource_start(pdev, 0),
15503                          pf->ioremap_len, err);
15504                 goto err_ioremap;
15505         }
15506         hw->vendor_id = pdev->vendor;
15507         hw->device_id = pdev->device;
15508         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
15509         hw->subsystem_vendor_id = pdev->subsystem_vendor;
15510         i40e_set_subsystem_device_id(hw);
15511         hw->bus.device = PCI_SLOT(pdev->devfn);
15512         hw->bus.func = PCI_FUNC(pdev->devfn);
15513         hw->bus.bus_id = pdev->bus->number;
15514         pf->instance = pfs_found;
15515
15516         /* Select something other than the 802.1ad ethertype for the
15517          * switch to use internally and drop on ingress.
15518          */
15519         hw->switch_tag = 0xffff;
15520         hw->first_tag = ETH_P_8021AD;
15521         hw->second_tag = ETH_P_8021Q;
15522
15523         INIT_LIST_HEAD(&pf->l3_flex_pit_list);
15524         INIT_LIST_HEAD(&pf->l4_flex_pit_list);
15525         INIT_LIST_HEAD(&pf->ddp_old_prof);
15526
15527         /* set up the locks for the AQ, do this only once in probe
15528          * and destroy them only once in remove
15529          */
15530         mutex_init(&hw->aq.asq_mutex);
15531         mutex_init(&hw->aq.arq_mutex);
15532
15533         pf->msg_enable = netif_msg_init(debug,
15534                                         NETIF_MSG_DRV |
15535                                         NETIF_MSG_PROBE |
15536                                         NETIF_MSG_LINK);
15537         if (debug < -1)
15538                 pf->hw.debug_mask = debug;
15539
15540         /* do a special CORER for clearing PXE mode once at init */
15541         if (hw->revision_id == 0 &&
15542             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
15543                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
15544                 i40e_flush(hw);
15545                 msleep(200);
15546                 pf->corer_count++;
15547
15548                 i40e_clear_pxe_mode(hw);
15549         }
15550
15551         /* Reset here to make sure all is clean and to define PF 'n' */
15552         i40e_clear_hw(hw);
15553
15554         err = i40e_set_mac_type(hw);
15555         if (err) {
15556                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
15557                          err);
15558                 goto err_pf_reset;
15559         }
15560
15561         err = i40e_handle_resets(pf);
15562         if (err)
15563                 goto err_pf_reset;
15564
15565         i40e_check_recovery_mode(pf);
15566
15567         if (is_kdump_kernel()) {
15568                 hw->aq.num_arq_entries = I40E_MIN_ARQ_LEN;
15569                 hw->aq.num_asq_entries = I40E_MIN_ASQ_LEN;
15570         } else {
15571                 hw->aq.num_arq_entries = I40E_AQ_LEN;
15572                 hw->aq.num_asq_entries = I40E_AQ_LEN;
15573         }
15574         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
15575         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
15576         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
15577
15578         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
15579                  "%s-%s:misc",
15580                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
15581
15582         err = i40e_init_shared_code(hw);
15583         if (err) {
15584                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
15585                          err);
15586                 goto err_pf_reset;
15587         }
15588
15589         /* set up a default setting for link flow control */
15590         pf->hw.fc.requested_mode = I40E_FC_NONE;
15591
15592         err = i40e_init_adminq(hw);
15593         if (err) {
15594                 if (err == I40E_ERR_FIRMWARE_API_VERSION)
15595                         dev_info(&pdev->dev,
15596                                  "The driver for the device stopped because the NVM image v%u.%u is newer than expected v%u.%u. You must install the most recent version of the network driver.\n",
15597                                  hw->aq.api_maj_ver,
15598                                  hw->aq.api_min_ver,
15599                                  I40E_FW_API_VERSION_MAJOR,
15600                                  I40E_FW_MINOR_VERSION(hw));
15601                 else
15602                         dev_info(&pdev->dev,
15603                                  "The driver for the device stopped because the device firmware failed to init. Try updating your NVM image.\n");
15604
15605                 goto err_pf_reset;
15606         }
15607         i40e_get_oem_version(hw);
15608
15609         /* provide nvm, fw, api versions, vendor:device id, subsys vendor:device id */
15610         dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s [%04x:%04x] [%04x:%04x]\n",
15611                  hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
15612                  hw->aq.api_maj_ver, hw->aq.api_min_ver,
15613                  i40e_nvm_version_str(hw), hw->vendor_id, hw->device_id,
15614                  hw->subsystem_vendor_id, hw->subsystem_device_id);
15615
15616         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
15617             hw->aq.api_min_ver > I40E_FW_MINOR_VERSION(hw))
15618                 dev_dbg(&pdev->dev,
15619                         "The driver for the device detected a newer version of the NVM image v%u.%u than v%u.%u.\n",
15620                          hw->aq.api_maj_ver,
15621                          hw->aq.api_min_ver,
15622                          I40E_FW_API_VERSION_MAJOR,
15623                          I40E_FW_MINOR_VERSION(hw));
15624         else if (hw->aq.api_maj_ver == 1 && hw->aq.api_min_ver < 4)
15625                 dev_info(&pdev->dev,
15626                          "The driver for the device detected an older version of the NVM image v%u.%u than expected v%u.%u. Please update the NVM image.\n",
15627                          hw->aq.api_maj_ver,
15628                          hw->aq.api_min_ver,
15629                          I40E_FW_API_VERSION_MAJOR,
15630                          I40E_FW_MINOR_VERSION(hw));
15631
15632         i40e_verify_eeprom(pf);
15633
15634         /* Rev 0 hardware was never productized */
15635         if (hw->revision_id < 1)
15636                 dev_warn(&pdev->dev, "This device is a pre-production adapter/LOM. Please be aware there may be issues with your hardware. If you are experiencing problems please contact your Intel or hardware representative who provided you with this hardware.\n");
15637
15638         i40e_clear_pxe_mode(hw);
15639
15640         err = i40e_get_capabilities(pf, i40e_aqc_opc_list_func_capabilities);
15641         if (err)
15642                 goto err_adminq_setup;
15643
15644         err = i40e_sw_init(pf);
15645         if (err) {
15646                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
15647                 goto err_sw_init;
15648         }
15649
15650         if (test_bit(__I40E_RECOVERY_MODE, pf->state))
15651                 return i40e_init_recovery_mode(pf, hw);
15652
15653         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
15654                                 hw->func_caps.num_rx_qp, 0, 0);
15655         if (err) {
15656                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
15657                 goto err_init_lan_hmc;
15658         }
15659
15660         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
15661         if (err) {
15662                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
15663                 err = -ENOENT;
15664                 goto err_configure_lan_hmc;
15665         }
15666
15667         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
15668          * Ignore error return codes because if it was already disabled via
15669          * hardware settings this will fail
15670          */
15671         if (pf->hw_features & I40E_HW_STOP_FW_LLDP) {
15672                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
15673                 i40e_aq_stop_lldp(hw, true, false, NULL);
15674         }
15675
15676         /* allow a platform config to override the HW addr */
15677         i40e_get_platform_mac_addr(pdev, pf);
15678
15679         if (!is_valid_ether_addr(hw->mac.addr)) {
15680                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
15681                 err = -EIO;
15682                 goto err_mac_addr;
15683         }
15684         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
15685         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
15686         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
15687         if (is_valid_ether_addr(hw->mac.port_addr))
15688                 pf->hw_features |= I40E_HW_PORT_ID_VALID;
15689
15690         i40e_ptp_alloc_pins(pf);
15691         pci_set_drvdata(pdev, pf);
15692         pci_save_state(pdev);
15693
15694 #ifdef CONFIG_I40E_DCB
15695         status = i40e_get_fw_lldp_status(&pf->hw, &lldp_status);
15696         (!status &&
15697          lldp_status == I40E_GET_FW_LLDP_STATUS_ENABLED) ?
15698                 (pf->flags &= ~I40E_FLAG_DISABLE_FW_LLDP) :
15699                 (pf->flags |= I40E_FLAG_DISABLE_FW_LLDP);
15700         dev_info(&pdev->dev,
15701                  (pf->flags & I40E_FLAG_DISABLE_FW_LLDP) ?
15702                         "FW LLDP is disabled\n" :
15703                         "FW LLDP is enabled\n");
15704
15705         /* Enable FW to write default DCB config on link-up */
15706         i40e_aq_set_dcb_parameters(hw, true, NULL);
15707
15708         err = i40e_init_pf_dcb(pf);
15709         if (err) {
15710                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
15711                 pf->flags &= ~(I40E_FLAG_DCB_CAPABLE | I40E_FLAG_DCB_ENABLED);
15712                 /* Continue without DCB enabled */
15713         }
15714 #endif /* CONFIG_I40E_DCB */
15715
15716         /* set up periodic task facility */
15717         timer_setup(&pf->service_timer, i40e_service_timer, 0);
15718         pf->service_timer_period = HZ;
15719
15720         INIT_WORK(&pf->service_task, i40e_service_task);
15721         clear_bit(__I40E_SERVICE_SCHED, pf->state);
15722
15723         /* NVM bit on means WoL disabled for the port */
15724         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
15725         if (BIT (hw->port) & wol_nvm_bits || hw->partition_id != 1)
15726                 pf->wol_en = false;
15727         else
15728                 pf->wol_en = true;
15729         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
15730
15731         /* set up the main switch operations */
15732         i40e_determine_queue_usage(pf);
15733         err = i40e_init_interrupt_scheme(pf);
15734         if (err)
15735                 goto err_switch_setup;
15736
15737         /* Reduce Tx and Rx pairs for kdump
15738          * When MSI-X is enabled, it's not allowed to use more TC queue
15739          * pairs than MSI-X vectors (pf->num_lan_msix) exist. Thus
15740          * vsi->num_queue_pairs will be equal to pf->num_lan_msix, i.e., 1.
15741          */
15742         if (is_kdump_kernel())
15743                 pf->num_lan_msix = 1;
15744
15745         pf->udp_tunnel_nic.set_port = i40e_udp_tunnel_set_port;
15746         pf->udp_tunnel_nic.unset_port = i40e_udp_tunnel_unset_port;
15747         pf->udp_tunnel_nic.flags = UDP_TUNNEL_NIC_INFO_MAY_SLEEP;
15748         pf->udp_tunnel_nic.shared = &pf->udp_tunnel_shared;
15749         pf->udp_tunnel_nic.tables[0].n_entries = I40E_MAX_PF_UDP_OFFLOAD_PORTS;
15750         pf->udp_tunnel_nic.tables[0].tunnel_types = UDP_TUNNEL_TYPE_VXLAN |
15751                                                     UDP_TUNNEL_TYPE_GENEVE;
15752
15753         /* The number of VSIs reported by the FW is the minimum guaranteed
15754          * to us; HW supports far more and we share the remaining pool with
15755          * the other PFs. We allocate space for more than the guarantee with
15756          * the understanding that we might not get them all later.
15757          */
15758         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
15759                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
15760         else
15761                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
15762         if (pf->num_alloc_vsi > UDP_TUNNEL_NIC_MAX_SHARING_DEVICES) {
15763                 dev_warn(&pf->pdev->dev,
15764                          "limiting the VSI count due to UDP tunnel limitation %d > %d\n",
15765                          pf->num_alloc_vsi, UDP_TUNNEL_NIC_MAX_SHARING_DEVICES);
15766                 pf->num_alloc_vsi = UDP_TUNNEL_NIC_MAX_SHARING_DEVICES;
15767         }
15768
15769         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
15770         pf->vsi = kcalloc(pf->num_alloc_vsi, sizeof(struct i40e_vsi *),
15771                           GFP_KERNEL);
15772         if (!pf->vsi) {
15773                 err = -ENOMEM;
15774                 goto err_switch_setup;
15775         }
15776
15777 #ifdef CONFIG_PCI_IOV
15778         /* prep for VF support */
15779         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
15780             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
15781             !test_bit(__I40E_BAD_EEPROM, pf->state)) {
15782                 if (pci_num_vf(pdev))
15783                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
15784         }
15785 #endif
15786         err = i40e_setup_pf_switch(pf, false, false);
15787         if (err) {
15788                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
15789                 goto err_vsis;
15790         }
15791         INIT_LIST_HEAD(&pf->vsi[pf->lan_vsi]->ch_list);
15792
15793         /* if FDIR VSI was set up, start it now */
15794         for (i = 0; i < pf->num_alloc_vsi; i++) {
15795                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
15796                         i40e_vsi_open(pf->vsi[i]);
15797                         break;
15798                 }
15799         }
15800
15801         /* The driver only wants link up/down and module qualification
15802          * reports from firmware.  Note the negative logic.
15803          */
15804         err = i40e_aq_set_phy_int_mask(&pf->hw,
15805                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
15806                                          I40E_AQ_EVENT_MEDIA_NA |
15807                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
15808         if (err)
15809                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
15810                          i40e_stat_str(&pf->hw, err),
15811                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
15812
15813         /* Reconfigure hardware for allowing smaller MSS in the case
15814          * of TSO, so that we avoid the MDD being fired and causing
15815          * a reset in the case of small MSS+TSO.
15816          */
15817         val = rd32(hw, I40E_REG_MSS);
15818         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
15819                 val &= ~I40E_REG_MSS_MIN_MASK;
15820                 val |= I40E_64BYTE_MSS;
15821                 wr32(hw, I40E_REG_MSS, val);
15822         }
15823
15824         if (pf->hw_features & I40E_HW_RESTART_AUTONEG) {
15825                 msleep(75);
15826                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
15827                 if (err)
15828                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
15829                                  i40e_stat_str(&pf->hw, err),
15830                                  i40e_aq_str(&pf->hw,
15831                                              pf->hw.aq.asq_last_status));
15832         }
15833         /* The main driver is (mostly) up and happy. We need to set this state
15834          * before setting up the misc vector or we get a race and the vector
15835          * ends up disabled forever.
15836          */
15837         clear_bit(__I40E_DOWN, pf->state);
15838
15839         /* In case of MSIX we are going to setup the misc vector right here
15840          * to handle admin queue events etc. In case of legacy and MSI
15841          * the misc functionality and queue processing is combined in
15842          * the same vector and that gets setup at open.
15843          */
15844         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
15845                 err = i40e_setup_misc_vector(pf);
15846                 if (err) {
15847                         dev_info(&pdev->dev,
15848                                  "setup of misc vector failed: %d\n", err);
15849                         i40e_cloud_filter_exit(pf);
15850                         i40e_fdir_teardown(pf);
15851                         goto err_vsis;
15852                 }
15853         }
15854
15855 #ifdef CONFIG_PCI_IOV
15856         /* prep for VF support */
15857         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
15858             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
15859             !test_bit(__I40E_BAD_EEPROM, pf->state)) {
15860                 /* disable link interrupts for VFs */
15861                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
15862                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
15863                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
15864                 i40e_flush(hw);
15865
15866                 if (pci_num_vf(pdev)) {
15867                         dev_info(&pdev->dev,
15868                                  "Active VFs found, allocating resources.\n");
15869                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
15870                         if (err)
15871                                 dev_info(&pdev->dev,
15872                                          "Error %d allocating resources for existing VFs\n",
15873                                          err);
15874                 }
15875         }
15876 #endif /* CONFIG_PCI_IOV */
15877
15878         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
15879                 pf->iwarp_base_vector = i40e_get_lump(pf, pf->irq_pile,
15880                                                       pf->num_iwarp_msix,
15881                                                       I40E_IWARP_IRQ_PILE_ID);
15882                 if (pf->iwarp_base_vector < 0) {
15883                         dev_info(&pdev->dev,
15884                                  "failed to get tracking for %d vectors for IWARP err=%d\n",
15885                                  pf->num_iwarp_msix, pf->iwarp_base_vector);
15886                         pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
15887                 }
15888         }
15889
15890         i40e_dbg_pf_init(pf);
15891
15892         /* tell the firmware that we're starting */
15893         i40e_send_version(pf);
15894
15895         /* since everything's happy, start the service_task timer */
15896         mod_timer(&pf->service_timer,
15897                   round_jiffies(jiffies + pf->service_timer_period));
15898
15899         /* add this PF to client device list and launch a client service task */
15900         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
15901                 err = i40e_lan_add_device(pf);
15902                 if (err)
15903                         dev_info(&pdev->dev, "Failed to add PF to client API service list: %d\n",
15904                                  err);
15905         }
15906
15907 #define PCI_SPEED_SIZE 8
15908 #define PCI_WIDTH_SIZE 8
15909         /* Devices on the IOSF bus do not have this information
15910          * and will report PCI Gen 1 x 1 by default so don't bother
15911          * checking them.
15912          */
15913         if (!(pf->hw_features & I40E_HW_NO_PCI_LINK_CHECK)) {
15914                 char speed[PCI_SPEED_SIZE] = "Unknown";
15915                 char width[PCI_WIDTH_SIZE] = "Unknown";
15916
15917                 /* Get the negotiated link width and speed from PCI config
15918                  * space
15919                  */
15920                 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
15921                                           &link_status);
15922
15923                 i40e_set_pci_config_data(hw, link_status);
15924
15925                 switch (hw->bus.speed) {
15926                 case i40e_bus_speed_8000:
15927                         strlcpy(speed, "8.0", PCI_SPEED_SIZE); break;
15928                 case i40e_bus_speed_5000:
15929                         strlcpy(speed, "5.0", PCI_SPEED_SIZE); break;
15930                 case i40e_bus_speed_2500:
15931                         strlcpy(speed, "2.5", PCI_SPEED_SIZE); break;
15932                 default:
15933                         break;
15934                 }
15935                 switch (hw->bus.width) {
15936                 case i40e_bus_width_pcie_x8:
15937                         strlcpy(width, "8", PCI_WIDTH_SIZE); break;
15938                 case i40e_bus_width_pcie_x4:
15939                         strlcpy(width, "4", PCI_WIDTH_SIZE); break;
15940                 case i40e_bus_width_pcie_x2:
15941                         strlcpy(width, "2", PCI_WIDTH_SIZE); break;
15942                 case i40e_bus_width_pcie_x1:
15943                         strlcpy(width, "1", PCI_WIDTH_SIZE); break;
15944                 default:
15945                         break;
15946                 }
15947
15948                 dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
15949                          speed, width);
15950
15951                 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
15952                     hw->bus.speed < i40e_bus_speed_8000) {
15953                         dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
15954                         dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
15955                 }
15956         }
15957
15958         /* get the requested speeds from the fw */
15959         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
15960         if (err)
15961                 dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
15962                         i40e_stat_str(&pf->hw, err),
15963                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
15964         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
15965
15966         /* set the FEC config due to the board capabilities */
15967         i40e_set_fec_in_flags(abilities.fec_cfg_curr_mod_ext_info, &pf->flags);
15968
15969         /* get the supported phy types from the fw */
15970         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
15971         if (err)
15972                 dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
15973                         i40e_stat_str(&pf->hw, err),
15974                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
15975
15976         /* make sure the MFS hasn't been set lower than the default */
15977 #define MAX_FRAME_SIZE_DEFAULT 0x2600
15978         val = (rd32(&pf->hw, I40E_PRTGL_SAH) &
15979                I40E_PRTGL_SAH_MFS_MASK) >> I40E_PRTGL_SAH_MFS_SHIFT;
15980         if (val < MAX_FRAME_SIZE_DEFAULT)
15981                 dev_warn(&pdev->dev, "MFS for port %x has been set below the default: %x\n",
15982                          i, val);
15983
15984         /* Add a filter to drop all Flow control frames from any VSI from being
15985          * transmitted. By doing so we stop a malicious VF from sending out
15986          * PAUSE or PFC frames and potentially controlling traffic for other
15987          * PF/VF VSIs.
15988          * The FW can still send Flow control frames if enabled.
15989          */
15990         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
15991                                                        pf->main_vsi_seid);
15992
15993         if ((pf->hw.device_id == I40E_DEV_ID_10G_BASE_T) ||
15994                 (pf->hw.device_id == I40E_DEV_ID_10G_BASE_T4))
15995                 pf->hw_features |= I40E_HW_PHY_CONTROLS_LEDS;
15996         if (pf->hw.device_id == I40E_DEV_ID_SFP_I_X722)
15997                 pf->hw_features |= I40E_HW_HAVE_CRT_RETIMER;
15998         /* print a string summarizing features */
15999         i40e_print_features(pf);
16000
16001         return 0;
16002
16003         /* Unwind what we've done if something failed in the setup */
16004 err_vsis:
16005         set_bit(__I40E_DOWN, pf->state);
16006         i40e_clear_interrupt_scheme(pf);
16007         kfree(pf->vsi);
16008 err_switch_setup:
16009         i40e_reset_interrupt_capability(pf);
16010         del_timer_sync(&pf->service_timer);
16011 err_mac_addr:
16012 err_configure_lan_hmc:
16013         (void)i40e_shutdown_lan_hmc(hw);
16014 err_init_lan_hmc:
16015         kfree(pf->qp_pile);
16016 err_sw_init:
16017 err_adminq_setup:
16018 err_pf_reset:
16019         iounmap(hw->hw_addr);
16020 err_ioremap:
16021         kfree(pf);
16022 err_pf_alloc:
16023         pci_disable_pcie_error_reporting(pdev);
16024         pci_release_mem_regions(pdev);
16025 err_pci_reg:
16026 err_dma:
16027         pci_disable_device(pdev);
16028         return err;
16029 }
16030
16031 /**
16032  * i40e_remove - Device removal routine
16033  * @pdev: PCI device information struct
16034  *
16035  * i40e_remove is called by the PCI subsystem to alert the driver
16036  * that is should release a PCI device.  This could be caused by a
16037  * Hot-Plug event, or because the driver is going to be removed from
16038  * memory.
16039  **/
16040 static void i40e_remove(struct pci_dev *pdev)
16041 {
16042         struct i40e_pf *pf = pci_get_drvdata(pdev);
16043         struct i40e_hw *hw = &pf->hw;
16044         i40e_status ret_code;
16045         int i;
16046
16047         i40e_dbg_pf_exit(pf);
16048
16049         i40e_ptp_stop(pf);
16050
16051         /* Disable RSS in hw */
16052         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), 0);
16053         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), 0);
16054
16055         /* Grab __I40E_RESET_RECOVERY_PENDING and set __I40E_IN_REMOVE
16056          * flags, once they are set, i40e_rebuild should not be called as
16057          * i40e_prep_for_reset always returns early.
16058          */
16059         while (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, pf->state))
16060                 usleep_range(1000, 2000);
16061         set_bit(__I40E_IN_REMOVE, pf->state);
16062
16063         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
16064                 set_bit(__I40E_VF_RESETS_DISABLED, pf->state);
16065                 i40e_free_vfs(pf);
16066                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
16067         }
16068         /* no more scheduling of any task */
16069         set_bit(__I40E_SUSPENDED, pf->state);
16070         set_bit(__I40E_DOWN, pf->state);
16071         if (pf->service_timer.function)
16072                 del_timer_sync(&pf->service_timer);
16073         if (pf->service_task.func)
16074                 cancel_work_sync(&pf->service_task);
16075
16076         if (test_bit(__I40E_RECOVERY_MODE, pf->state)) {
16077                 struct i40e_vsi *vsi = pf->vsi[0];
16078
16079                 /* We know that we have allocated only one vsi for this PF,
16080                  * it was just for registering netdevice, so the interface
16081                  * could be visible in the 'ifconfig' output
16082                  */
16083                 unregister_netdev(vsi->netdev);
16084                 free_netdev(vsi->netdev);
16085
16086                 goto unmap;
16087         }
16088
16089         /* Client close must be called explicitly here because the timer
16090          * has been stopped.
16091          */
16092         i40e_notify_client_of_netdev_close(pf->vsi[pf->lan_vsi], false);
16093
16094         i40e_fdir_teardown(pf);
16095
16096         /* If there is a switch structure or any orphans, remove them.
16097          * This will leave only the PF's VSI remaining.
16098          */
16099         for (i = 0; i < I40E_MAX_VEB; i++) {
16100                 if (!pf->veb[i])
16101                         continue;
16102
16103                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
16104                     pf->veb[i]->uplink_seid == 0)
16105                         i40e_switch_branch_release(pf->veb[i]);
16106         }
16107
16108         /* Now we can shutdown the PF's VSI, just before we kill
16109          * adminq and hmc.
16110          */
16111         if (pf->vsi[pf->lan_vsi])
16112                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
16113
16114         i40e_cloud_filter_exit(pf);
16115
16116         /* remove attached clients */
16117         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
16118                 ret_code = i40e_lan_del_device(pf);
16119                 if (ret_code)
16120                         dev_warn(&pdev->dev, "Failed to delete client device: %d\n",
16121                                  ret_code);
16122         }
16123
16124         /* shutdown and destroy the HMC */
16125         if (hw->hmc.hmc_obj) {
16126                 ret_code = i40e_shutdown_lan_hmc(hw);
16127                 if (ret_code)
16128                         dev_warn(&pdev->dev,
16129                                  "Failed to destroy the HMC resources: %d\n",
16130                                  ret_code);
16131         }
16132
16133 unmap:
16134         /* Free MSI/legacy interrupt 0 when in recovery mode. */
16135         if (test_bit(__I40E_RECOVERY_MODE, pf->state) &&
16136             !(pf->flags & I40E_FLAG_MSIX_ENABLED))
16137                 free_irq(pf->pdev->irq, pf);
16138
16139         /* shutdown the adminq */
16140         i40e_shutdown_adminq(hw);
16141
16142         /* destroy the locks only once, here */
16143         mutex_destroy(&hw->aq.arq_mutex);
16144         mutex_destroy(&hw->aq.asq_mutex);
16145
16146         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
16147         rtnl_lock();
16148         i40e_clear_interrupt_scheme(pf);
16149         for (i = 0; i < pf->num_alloc_vsi; i++) {
16150                 if (pf->vsi[i]) {
16151                         if (!test_bit(__I40E_RECOVERY_MODE, pf->state))
16152                                 i40e_vsi_clear_rings(pf->vsi[i]);
16153                         i40e_vsi_clear(pf->vsi[i]);
16154                         pf->vsi[i] = NULL;
16155                 }
16156         }
16157         rtnl_unlock();
16158
16159         for (i = 0; i < I40E_MAX_VEB; i++) {
16160                 kfree(pf->veb[i]);
16161                 pf->veb[i] = NULL;
16162         }
16163
16164         kfree(pf->qp_pile);
16165         kfree(pf->vsi);
16166
16167         iounmap(hw->hw_addr);
16168         kfree(pf);
16169         pci_release_mem_regions(pdev);
16170
16171         pci_disable_pcie_error_reporting(pdev);
16172         pci_disable_device(pdev);
16173 }
16174
16175 /**
16176  * i40e_pci_error_detected - warning that something funky happened in PCI land
16177  * @pdev: PCI device information struct
16178  * @error: the type of PCI error
16179  *
16180  * Called to warn that something happened and the error handling steps
16181  * are in progress.  Allows the driver to quiesce things, be ready for
16182  * remediation.
16183  **/
16184 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
16185                                                 pci_channel_state_t error)
16186 {
16187         struct i40e_pf *pf = pci_get_drvdata(pdev);
16188
16189         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
16190
16191         if (!pf) {
16192                 dev_info(&pdev->dev,
16193                          "Cannot recover - error happened during device probe\n");
16194                 return PCI_ERS_RESULT_DISCONNECT;
16195         }
16196
16197         /* shutdown all operations */
16198         if (!test_bit(__I40E_SUSPENDED, pf->state))
16199                 i40e_prep_for_reset(pf);
16200
16201         /* Request a slot reset */
16202         return PCI_ERS_RESULT_NEED_RESET;
16203 }
16204
16205 /**
16206  * i40e_pci_error_slot_reset - a PCI slot reset just happened
16207  * @pdev: PCI device information struct
16208  *
16209  * Called to find if the driver can work with the device now that
16210  * the pci slot has been reset.  If a basic connection seems good
16211  * (registers are readable and have sane content) then return a
16212  * happy little PCI_ERS_RESULT_xxx.
16213  **/
16214 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
16215 {
16216         struct i40e_pf *pf = pci_get_drvdata(pdev);
16217         pci_ers_result_t result;
16218         u32 reg;
16219
16220         dev_dbg(&pdev->dev, "%s\n", __func__);
16221         if (pci_enable_device_mem(pdev)) {
16222                 dev_info(&pdev->dev,
16223                          "Cannot re-enable PCI device after reset.\n");
16224                 result = PCI_ERS_RESULT_DISCONNECT;
16225         } else {
16226                 pci_set_master(pdev);
16227                 pci_restore_state(pdev);
16228                 pci_save_state(pdev);
16229                 pci_wake_from_d3(pdev, false);
16230
16231                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
16232                 if (reg == 0)
16233                         result = PCI_ERS_RESULT_RECOVERED;
16234                 else
16235                         result = PCI_ERS_RESULT_DISCONNECT;
16236         }
16237
16238         return result;
16239 }
16240
16241 /**
16242  * i40e_pci_error_reset_prepare - prepare device driver for pci reset
16243  * @pdev: PCI device information struct
16244  */
16245 static void i40e_pci_error_reset_prepare(struct pci_dev *pdev)
16246 {
16247         struct i40e_pf *pf = pci_get_drvdata(pdev);
16248
16249         i40e_prep_for_reset(pf);
16250 }
16251
16252 /**
16253  * i40e_pci_error_reset_done - pci reset done, device driver reset can begin
16254  * @pdev: PCI device information struct
16255  */
16256 static void i40e_pci_error_reset_done(struct pci_dev *pdev)
16257 {
16258         struct i40e_pf *pf = pci_get_drvdata(pdev);
16259
16260         if (test_bit(__I40E_IN_REMOVE, pf->state))
16261                 return;
16262
16263         i40e_reset_and_rebuild(pf, false, false);
16264 }
16265
16266 /**
16267  * i40e_pci_error_resume - restart operations after PCI error recovery
16268  * @pdev: PCI device information struct
16269  *
16270  * Called to allow the driver to bring things back up after PCI error
16271  * and/or reset recovery has finished.
16272  **/
16273 static void i40e_pci_error_resume(struct pci_dev *pdev)
16274 {
16275         struct i40e_pf *pf = pci_get_drvdata(pdev);
16276
16277         dev_dbg(&pdev->dev, "%s\n", __func__);
16278         if (test_bit(__I40E_SUSPENDED, pf->state))
16279                 return;
16280
16281         i40e_handle_reset_warning(pf, false);
16282 }
16283
16284 /**
16285  * i40e_enable_mc_magic_wake - enable multicast magic packet wake up
16286  * using the mac_address_write admin q function
16287  * @pf: pointer to i40e_pf struct
16288  **/
16289 static void i40e_enable_mc_magic_wake(struct i40e_pf *pf)
16290 {
16291         struct i40e_hw *hw = &pf->hw;
16292         i40e_status ret;
16293         u8 mac_addr[6];
16294         u16 flags = 0;
16295
16296         /* Get current MAC address in case it's an LAA */
16297         if (pf->vsi[pf->lan_vsi] && pf->vsi[pf->lan_vsi]->netdev) {
16298                 ether_addr_copy(mac_addr,
16299                                 pf->vsi[pf->lan_vsi]->netdev->dev_addr);
16300         } else {
16301                 dev_err(&pf->pdev->dev,
16302                         "Failed to retrieve MAC address; using default\n");
16303                 ether_addr_copy(mac_addr, hw->mac.addr);
16304         }
16305
16306         /* The FW expects the mac address write cmd to first be called with
16307          * one of these flags before calling it again with the multicast
16308          * enable flags.
16309          */
16310         flags = I40E_AQC_WRITE_TYPE_LAA_WOL;
16311
16312         if (hw->func_caps.flex10_enable && hw->partition_id != 1)
16313                 flags = I40E_AQC_WRITE_TYPE_LAA_ONLY;
16314
16315         ret = i40e_aq_mac_address_write(hw, flags, mac_addr, NULL);
16316         if (ret) {
16317                 dev_err(&pf->pdev->dev,
16318                         "Failed to update MAC address registers; cannot enable Multicast Magic packet wake up");
16319                 return;
16320         }
16321
16322         flags = I40E_AQC_MC_MAG_EN
16323                         | I40E_AQC_WOL_PRESERVE_ON_PFR
16324                         | I40E_AQC_WRITE_TYPE_UPDATE_MC_MAG;
16325         ret = i40e_aq_mac_address_write(hw, flags, mac_addr, NULL);
16326         if (ret)
16327                 dev_err(&pf->pdev->dev,
16328                         "Failed to enable Multicast Magic Packet wake up\n");
16329 }
16330
16331 /**
16332  * i40e_shutdown - PCI callback for shutting down
16333  * @pdev: PCI device information struct
16334  **/
16335 static void i40e_shutdown(struct pci_dev *pdev)
16336 {
16337         struct i40e_pf *pf = pci_get_drvdata(pdev);
16338         struct i40e_hw *hw = &pf->hw;
16339
16340         set_bit(__I40E_SUSPENDED, pf->state);
16341         set_bit(__I40E_DOWN, pf->state);
16342
16343         del_timer_sync(&pf->service_timer);
16344         cancel_work_sync(&pf->service_task);
16345         i40e_cloud_filter_exit(pf);
16346         i40e_fdir_teardown(pf);
16347
16348         /* Client close must be called explicitly here because the timer
16349          * has been stopped.
16350          */
16351         i40e_notify_client_of_netdev_close(pf->vsi[pf->lan_vsi], false);
16352
16353         if (pf->wol_en && (pf->hw_features & I40E_HW_WOL_MC_MAGIC_PKT_WAKE))
16354                 i40e_enable_mc_magic_wake(pf);
16355
16356         i40e_prep_for_reset(pf);
16357
16358         wr32(hw, I40E_PFPM_APM,
16359              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
16360         wr32(hw, I40E_PFPM_WUFC,
16361              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
16362
16363         /* Free MSI/legacy interrupt 0 when in recovery mode. */
16364         if (test_bit(__I40E_RECOVERY_MODE, pf->state) &&
16365             !(pf->flags & I40E_FLAG_MSIX_ENABLED))
16366                 free_irq(pf->pdev->irq, pf);
16367
16368         /* Since we're going to destroy queues during the
16369          * i40e_clear_interrupt_scheme() we should hold the RTNL lock for this
16370          * whole section
16371          */
16372         rtnl_lock();
16373         i40e_clear_interrupt_scheme(pf);
16374         rtnl_unlock();
16375
16376         if (system_state == SYSTEM_POWER_OFF) {
16377                 pci_wake_from_d3(pdev, pf->wol_en);
16378                 pci_set_power_state(pdev, PCI_D3hot);
16379         }
16380 }
16381
16382 /**
16383  * i40e_suspend - PM callback for moving to D3
16384  * @dev: generic device information structure
16385  **/
16386 static int __maybe_unused i40e_suspend(struct device *dev)
16387 {
16388         struct i40e_pf *pf = dev_get_drvdata(dev);
16389         struct i40e_hw *hw = &pf->hw;
16390
16391         /* If we're already suspended, then there is nothing to do */
16392         if (test_and_set_bit(__I40E_SUSPENDED, pf->state))
16393                 return 0;
16394
16395         set_bit(__I40E_DOWN, pf->state);
16396
16397         /* Ensure service task will not be running */
16398         del_timer_sync(&pf->service_timer);
16399         cancel_work_sync(&pf->service_task);
16400
16401         /* Client close must be called explicitly here because the timer
16402          * has been stopped.
16403          */
16404         i40e_notify_client_of_netdev_close(pf->vsi[pf->lan_vsi], false);
16405
16406         if (pf->wol_en && (pf->hw_features & I40E_HW_WOL_MC_MAGIC_PKT_WAKE))
16407                 i40e_enable_mc_magic_wake(pf);
16408
16409         /* Since we're going to destroy queues during the
16410          * i40e_clear_interrupt_scheme() we should hold the RTNL lock for this
16411          * whole section
16412          */
16413         rtnl_lock();
16414
16415         i40e_prep_for_reset(pf);
16416
16417         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
16418         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
16419
16420         /* Clear the interrupt scheme and release our IRQs so that the system
16421          * can safely hibernate even when there are a large number of CPUs.
16422          * Otherwise hibernation might fail when mapping all the vectors back
16423          * to CPU0.
16424          */
16425         i40e_clear_interrupt_scheme(pf);
16426
16427         rtnl_unlock();
16428
16429         return 0;
16430 }
16431
16432 /**
16433  * i40e_resume - PM callback for waking up from D3
16434  * @dev: generic device information structure
16435  **/
16436 static int __maybe_unused i40e_resume(struct device *dev)
16437 {
16438         struct i40e_pf *pf = dev_get_drvdata(dev);
16439         int err;
16440
16441         /* If we're not suspended, then there is nothing to do */
16442         if (!test_bit(__I40E_SUSPENDED, pf->state))
16443                 return 0;
16444
16445         /* We need to hold the RTNL lock prior to restoring interrupt schemes,
16446          * since we're going to be restoring queues
16447          */
16448         rtnl_lock();
16449
16450         /* We cleared the interrupt scheme when we suspended, so we need to
16451          * restore it now to resume device functionality.
16452          */
16453         err = i40e_restore_interrupt_scheme(pf);
16454         if (err) {
16455                 dev_err(dev, "Cannot restore interrupt scheme: %d\n",
16456                         err);
16457         }
16458
16459         clear_bit(__I40E_DOWN, pf->state);
16460         i40e_reset_and_rebuild(pf, false, true);
16461
16462         rtnl_unlock();
16463
16464         /* Clear suspended state last after everything is recovered */
16465         clear_bit(__I40E_SUSPENDED, pf->state);
16466
16467         /* Restart the service task */
16468         mod_timer(&pf->service_timer,
16469                   round_jiffies(jiffies + pf->service_timer_period));
16470
16471         return 0;
16472 }
16473
16474 static const struct pci_error_handlers i40e_err_handler = {
16475         .error_detected = i40e_pci_error_detected,
16476         .slot_reset = i40e_pci_error_slot_reset,
16477         .reset_prepare = i40e_pci_error_reset_prepare,
16478         .reset_done = i40e_pci_error_reset_done,
16479         .resume = i40e_pci_error_resume,
16480 };
16481
16482 static SIMPLE_DEV_PM_OPS(i40e_pm_ops, i40e_suspend, i40e_resume);
16483
16484 static struct pci_driver i40e_driver = {
16485         .name     = i40e_driver_name,
16486         .id_table = i40e_pci_tbl,
16487         .probe    = i40e_probe,
16488         .remove   = i40e_remove,
16489         .driver   = {
16490                 .pm = &i40e_pm_ops,
16491         },
16492         .shutdown = i40e_shutdown,
16493         .err_handler = &i40e_err_handler,
16494         .sriov_configure = i40e_pci_sriov_configure,
16495 };
16496
16497 /**
16498  * i40e_init_module - Driver registration routine
16499  *
16500  * i40e_init_module is the first routine called when the driver is
16501  * loaded. All it does is register with the PCI subsystem.
16502  **/
16503 static int __init i40e_init_module(void)
16504 {
16505         pr_info("%s: %s\n", i40e_driver_name, i40e_driver_string);
16506         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
16507
16508         /* There is no need to throttle the number of active tasks because
16509          * each device limits its own task using a state bit for scheduling
16510          * the service task, and the device tasks do not interfere with each
16511          * other, so we don't set a max task limit. We must set WQ_MEM_RECLAIM
16512          * since we need to be able to guarantee forward progress even under
16513          * memory pressure.
16514          */
16515         i40e_wq = alloc_workqueue("%s", WQ_MEM_RECLAIM, 0, i40e_driver_name);
16516         if (!i40e_wq) {
16517                 pr_err("%s: Failed to create workqueue\n", i40e_driver_name);
16518                 return -ENOMEM;
16519         }
16520
16521         i40e_dbg_init();
16522         return pci_register_driver(&i40e_driver);
16523 }
16524 module_init(i40e_init_module);
16525
16526 /**
16527  * i40e_exit_module - Driver exit cleanup routine
16528  *
16529  * i40e_exit_module is called just before the driver is removed
16530  * from memory.
16531  **/
16532 static void __exit i40e_exit_module(void)
16533 {
16534         pci_unregister_driver(&i40e_driver);
16535         destroy_workqueue(i40e_wq);
16536         ida_destroy(&i40e_client_ida);
16537         i40e_dbg_exit();
16538 }
16539 module_exit(i40e_exit_module);