selftests/net: convert gre_gso.sh to run it in unique namespace

Here is the test result after conversion.

 # ./gre_gso.sh
     TEST: GREv6/v4 - copy file w/ TSO                                   [ OK ]
     TEST: GREv6/v4 - copy file w/ GSO                                   [ OK ]
     TEST: GREv6/v6 - copy file w/ TSO                                   [ OK ]
     TEST: GREv6/v6 - copy file w/ GSO                                   [ OK ]

 Tests passed:   4
 Tests failed:   0

Acked-by: David Ahern <dsahern@kernel.org>
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/tools/testing/selftests/net/gre_gso.sh b/tools/testing/selftests/net/gre_gso.sh
index 3224651db97b8835598c28ae4d64760a3d1c0317..5100d90f92d2143baef13e41b643687ccdda89e9 100755 (executable)
--- a/tools/testing/selftests/net/gre_gso.sh
+++ b/tools/testing/selftests/net/gre_gso.sh
@@ -2,10 +2,8 @@
 # SPDX-License-Identifier: GPL-2.0
 
 # This test is for checking GRE GSO.
-
+source lib.sh
 ret=0
-# Kselftest framework requirement - SKIP code is 4.
-ksft_skip=4
 
 # all tests in this script. Can be overridden with -t option
 TESTS="gre_gso"
@@ -13,8 +11,6 @@ TESTS="gre_gso"
 VERBOSE=0
 PAUSE_ON_FAIL=no
 PAUSE=no
-IP="ip -netns ns1"
-NS_EXEC="ip netns exec ns1"
 TMPFILE=`mktemp`
 PID=
 
@@ -50,13 +46,13 @@ log_test()
 setup()
 {
        set -e
-       ip netns add ns1
-       ip netns set ns1 auto
-       $IP link set dev lo up
+       setup_ns ns1
+       IP="ip -netns $ns1"
+       NS_EXEC="ip netns exec $ns1"
 
        ip link add veth0 type veth peer name veth1
        ip link set veth0 up
-       ip link set veth1 netns ns1
+       ip link set veth1 netns $ns1
        $IP link set veth1 name veth0
        $IP link set veth0 up
 
@@ -70,7 +66,7 @@ cleanup()
        [ -n "$PID" ] && kill $PID
        ip link del dev gre1 &> /dev/null
        ip link del dev veth0 &> /dev/null
-       ip netns del ns1
+       cleanup_ns $ns1
 }
 
 get_linklocal()
@@ -145,7 +141,7 @@ gre6_gso_test()
        setup
 
        a1=$(get_linklocal veth0)
-       a2=$(get_linklocal veth0 ns1)
+       a2=$(get_linklocal veth0 $ns1)
 
        gre_create_tun $a1 $a2