From db2c5bfcdf38e6c8bb072462b3ebbe9e409ff5e0 Mon Sep 17 00:00:00 2001
From: Petr Machata <petrm@mellanox.com>
Date: Thu, 31 Jan 2019 22:35:17 +0000
Subject: [PATCH] selftests: forwarding: mirror_lib: Wait for tardy mirrored
packets
When running in an environment with poor performance (such as a
simulator), processing mirrored packets can take a while. Evaluating the
condition too soon leads to spurious "seen 9, expected 10" failures as
the last packet doesn't have enough time to get mirrored and the mirror
to arrive and bump the observed counters.
Wait for one ping interval before evaluating the test.
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 | 1 +
1 file changed, 1 insertion(+)
diff --git a/tools/testing/selftests/net/forwarding/mirror_lib.sh b/tools/testing/selftests/net/forwarding/mirror_lib.sh
index 878f8d53327a3..00797597fcf5f 100644
--- a/tools/testing/selftests/net/forwarding/mirror_lib.sh
+++ b/tools/testing/selftests/net/forwarding/mirror_lib.sh
@@ -34,6 +34,7 @@ mirror_test()
ip vrf exec $vrf_name \
${PING} ${sip:+-I $sip} $dip -c 10 -i 0.5 -w $ping_timeout \
&> /dev/null
+ sleep 0.5
local t1=$(tc_rule_stats_get $dev $pref)
local delta=$((t1 - t0))
# Tolerate a couple stray extra packets.
--
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