diff mbox series

[net-next,10/10] selftests: mlxsw: sch_red_ets: Test proper counter cleaning in ETS

Message ID 1f44a5666de7cb9da7102e4b585d732814d51a73.1618928119.git.petrm@nvidia.com (mailing list archive)
State Accepted
Delegated to: Netdev Maintainers
Headers show
Series mlxsw: Refactor qdisc offload | expand

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netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 13 lines checked
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Commit Message

Petr Machata April 20, 2021, 2:53 p.m. UTC 
There was a bug introduced during the rework which cause non-zero backlog
being stuck at ETS. Introduce a selftest that would have caught the issue
earlier.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
---
 tools/testing/selftests/drivers/net/mlxsw/sch_red_ets.sh | 7 +++++++
 1 file changed, 7 insertions(+)
diff mbox series

Patch

diff --git a/tools/testing/selftests/drivers/net/mlxsw/sch_red_ets.sh b/tools/testing/selftests/drivers/net/mlxsw/sch_red_ets.sh
index 3f007c5f8361..f3ef3274f9b3 100755
--- a/tools/testing/selftests/drivers/net/mlxsw/sch_red_ets.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/sch_red_ets.sh
@@ -67,6 +67,13 @@  red_test()
 {
 	install_qdisc
 
+	# Make sure that we get the non-zero value if there is any.
+	local cur=$(busywait 1100 until_counter_is "> 0" \
+			    qdisc_stats_get $swp3 10: .backlog)
+	(( cur == 0 ))
+	check_err $? "backlog of $cur observed on non-busy qdisc"
+	log_test "$QDISC backlog properly cleaned"
+
 	do_red_test 10 $BACKLOG1
 	do_red_test 11 $BACKLOG2