selftests: mlxsw: sch_red_ets: Increase required backlog

Backlog fluctuates on Spectrum-4 much more than on <4. Increasing the
desired backlog seems to help, as the constant fluctuations do not overlap
into the territory where packets are marked.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Amit Cohen <amcohen@nvidia.com>
Link: https://patch.msgid.link/0821fb3aa8bb6a6c0d3000baab04995517c9a0cc.1728316370.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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 8ecddafa79b3f5de92eb6920130ea3f8fcb0b54e..576067b207a8a89735c36a5af5275d171868fa5f 100755 (executable)
--- a/tools/testing/selftests/drivers/net/mlxsw/sch_red_ets.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/sch_red_ets.sh
@@ -20,8 +20,8 @@ source sch_red_core.sh
 # $BACKLOG2 are far enough not to overlap, so that we can assume that if we do
 # see (do not see) marking, it is actually due to the configuration of that one
 # TC, and not due to configuration of the other TC leaking over.
-BACKLOG1=200000
-BACKLOG2=500000
+BACKLOG1=400000
+BACKLOG2=1000000
 
 install_root_qdisc()
 {
@@ -35,7 +35,7 @@ install_qdisc_tc0()
 
        tc qdisc add dev $swp3 parent 10:8 handle 108: red \
           limit 1000000 min $BACKLOG1 max $((BACKLOG1 + 1)) \
-          probability 1.0 avpkt 8000 burst 38 "${args[@]}"
+          probability 1.0 avpkt 8000 burst 51 "${args[@]}"
 }
 
 install_qdisc_tc1()
@@ -44,7 +44,7 @@ install_qdisc_tc1()
 
        tc qdisc add dev $swp3 parent 10:7 handle 107: red \
           limit 1000000 min $BACKLOG2 max $((BACKLOG2 + 1)) \
-          probability 1.0 avpkt 8000 burst 63 "${args[@]}"
+          probability 1.0 avpkt 8000 burst 126 "${args[@]}"
 }
 
 install_qdisc()