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Message-Id: <50138197e2d52547bb214ba4a21ef2397a0edf30.1527788672.git.petrm@mellanox.com> Date: Thu, 31 May 2018 19:52:15 +0200 From: Petr Machata <petrm@...lanox.com> To: netdev@...r.kernel.org, linux-kselftest@...r.kernel.org Cc: davem@...emloft.net, shuah@...nel.org, idosch@...lanox.com Subject: [PATCH net-next 3/9] selftests: forwarding: mirror_lib: skip_hw the VLAN capture When the VLAN capture is installed on a front panel device and not a soft device, the packets are counted twice: once in fast path, and once after they are trapped to the kernel. Resolve the problem by passing skip_hw flag to vlan_capture_install(). Signed-off-by: Petr Machata <petrm@...lanox.com> --- tools/testing/selftests/net/forwarding/mirror_lib.sh | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/net/forwarding/mirror_lib.sh b/tools/testing/selftests/net/forwarding/mirror_lib.sh index 67efe25..d36dc26 100644 --- a/tools/testing/selftests/net/forwarding/mirror_lib.sh +++ b/tools/testing/selftests/net/forwarding/mirror_lib.sh @@ -102,7 +102,10 @@ do_test_span_vlan_dir_ips() local ip1=$1; shift local ip2=$1; shift - vlan_capture_install $dev "vlan_id $vid" + # 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 $vid" mirror_test v$h1 $ip1 $ip2 $dev 100 $expect mirror_test v$h2 $ip2 $ip1 $dev 100 $expect vlan_capture_uninstall $dev -- 2.4.11
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