[Patch net v7 9/9] selftests/tc-testing: Add a test case for HTB with netem
From: Cong Wang <hidden>
Date: 2026-01-13 19:07:04
Subsystem:
kernel selftest framework, the rest · Maintainers:
Shuah Khan, Shuah Khan, Linus Torvalds
This test is requested by Stephen and Jakub during review, it is for validating backlog. Cc: Jakub Kicinski <kuba@kernel.org> Cc: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: Cong Wang <redacted> --- .../tc-testing/tc-tests/infra/qdiscs.json | 33 +++++++++++++++++++ 1 file changed, 33 insertions(+)
diff --git a/tools/testing/selftests/tc-testing/tc-tests/infra/qdiscs.json b/tools/testing/selftests/tc-testing/tc-tests/infra/qdiscs.json
index 4ebdb27e39b3..83ff9e7406f2 100644
--- a/tools/testing/selftests/tc-testing/tc-tests/infra/qdiscs.json
+++ b/tools/testing/selftests/tc-testing/tc-tests/infra/qdiscs.json@@ -988,6 +988,39 @@ "$TC qdisc del dev $DUMMY root handle 1: prio" ] }, + { + "id": "3c5d", + "name": "Test HTB with NETEM duplication Backlog Accounting", + "category": [ + "qdisc", + "htb", + "netem" + ], + "plugins": { + "requires": [ + "nsPlugin" + ] + }, + "setup": [ + "$IP link set dev $DUMMY up || true", + "$IP addr add 10.10.11.10/24 dev $DUMMY || true", + "$TC qdisc add dev $DUMMY root handle 1: htb default 1", + "$TC class add dev $DUMMY parent 1: classid 1:1 htb rate 100mbit", + "$TC qdisc add dev $DUMMY parent 1:1 handle 10: netem limit 4 duplicate 100%", + [ + "ping -c1 -W0.01 -I $DUMMY 10.10.11.11", + 1 + ] + ], + "cmdUnderTest": "$TC qdisc del dev $DUMMY handle 10: parent 1:1", + "expExitCode": "0", + "verifyCmd": "$TC -s qdisc show dev $DUMMY", + "matchPattern": "backlog 0b 0p", + "matchCount": "1", + "teardown": [ + "$TC qdisc del dev $DUMMY root handle 1: htb" + ] + }, { "id": "4989", "name": "Try to add an fq child to an ingress qdisc",
--
2.34.1