diff mbox series

[net-next,04/11] selftests: forwarding: mirror_gre_changes: Fix TTL test

Message ID ef4e967c2814b4aab7839b80605823aaa00cdce7.1548973731.git.petrm@mellanox.com
State Accepted
Delegated to: David Miller
Headers show
Series selftests: Various fixes | expand

Commit Message

Petr Machata Jan. 31, 2019, 10:35 p.m. UTC
When running in a simulator, the TTL change takes a while to settle and
during this time the performance of the packet processing is lowered.
The resulting instability leads to ping sending more packets as it
assumes some have been dropped. This then leads to regular spurious
failures as more packets than expected are observed.

Sleep a bit to give the system time to stabilize.

Signed-off-by: Petr Machata <petrm@mellanox.com>
---
 tools/testing/selftests/net/forwarding/mirror_gre_changes.sh | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/tools/testing/selftests/net/forwarding/mirror_gre_changes.sh b/tools/testing/selftests/net/forwarding/mirror_gre_changes.sh
index 135902aa8b11..472bd023e2a5 100755
--- a/tools/testing/selftests/net/forwarding/mirror_gre_changes.sh
+++ b/tools/testing/selftests/net/forwarding/mirror_gre_changes.sh
@@ -79,6 +79,7 @@  test_span_gre_ttl()
 	mirror_test v$h1 192.0.2.1 192.0.2.2 $h3 77 0
 
 	ip link set dev $tundev type $type ttl 50
+	sleep 2
 	mirror_test v$h1 192.0.2.1 192.0.2.2 $h3 77 10
 
 	ip link set dev $tundev type $type ttl 100