From 93e996ee3838c40b632d607eda35e7fb75d695df Mon Sep 17 00:00:00 2001 From: Petr Machata <petrm@mellanox.com> Date: Sun, 8 Jul 2018 19:58:55 +0200 Subject: [PATCH] selftests: forwarding: mirror_lib: Tighten up VLAN capture The function do_test_span_vlan_dir_ips() is used for testing whether mirrored packets are VLAN-encapsulated. But since it only considers VLAN encapsulation, it may end up matching unmirrored ARP traffic as well. One consequence is a rare failure of mirror_gre_vlan_bridge_1q's test_gretap_untagged_egress. Decreasing ping cadence in mirror_test() makes the problem easily reproducible. Therefore tighten up the match criterion to only count those 802.1q packets where the next header is IP. Signed-off-by: Petr Machata <petrm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net> --- tools/testing/selftests/net/forwarding/mirror_lib.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/net/forwarding/mirror_lib.sh b/tools/testing/selftests/net/forwarding/mirror_lib.sh index d36dc26c6c516..07991e1025c70 100644 --- a/tools/testing/selftests/net/forwarding/mirror_lib.sh +++ b/tools/testing/selftests/net/forwarding/mirror_lib.sh @@ -105,7 +105,7 @@ do_test_span_vlan_dir_ips() # Install the capture as skip_hw to avoid double-counting of packets. # The traffic is meant for local box anyway, so will be trapped to # kernel. - vlan_capture_install $dev "skip_hw vlan_id $vid" + vlan_capture_install $dev "skip_hw vlan_id $vid vlan_ethtype ip" mirror_test v$h1 $ip1 $ip2 $dev 100 $expect mirror_test v$h2 $ip2 $ip1 $dev 100 $expect vlan_capture_uninstall $dev -- 2.39.5