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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@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Petr Machata 2018-05-31 19:52:15 +02:00 committed by David S. Miller
parent 900530f3f8
commit 275225fb4e
1 changed files with 4 additions and 1 deletions
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5
tools/testing/selftests/net/forwarding/mirror_lib.sh
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@ -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