]> git.itanic.dy.fi Git - linux-stable/commit
net/mlx5: DR, Fix crc32 calculation to work on big-endian (BE) CPUs
authorErez Shitrit <erezsh@nvidia.com>
Thu, 9 Mar 2023 14:43:15 +0000 (16:43 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 30 May 2023 11:57:59 +0000 (12:57 +0100)
commitc21862232f6cd1437e2c7531eec196a593c1d9ae
tree0788b1d5fe58b82c3da856d5d5706b14bd2f2940
parent058fd18e747750abf9314f6add2c6d9c596cdf58
net/mlx5: DR, Fix crc32 calculation to work on big-endian (BE) CPUs

commit 1e5daf5565b61a96e570865091589afc9156e3d3 upstream.

When calculating crc for hash index we use the function crc32 that
calculates for little-endian (LE) arch.
Then we convert it to network endianness using htonl(), but it's wrong
to do the conversion in BE archs since the crc32 value is already LE.

The solution is to switch the bytes from the crc result for all types
of arc.

Fixes: 40416d8ede65 ("net/mlx5: DR, Replace CRC32 implementation to use kernel lib")
Signed-off-by: Erez Shitrit <erezsh@nvidia.com>
Reviewed-by: Alex Vesker <valex@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste.c