[PATCH net-next v7 2/3] selftests: tc-testing: add fq_pie per-flow class stats test
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COLD20d
From: Hemendra M. Naik <hidden>
Date: 2026-09-19 06:02:26
Also in:
linux-kselftest, lkml
Subsystem:
kernel selftest framework, the rest · Maintainers:
Shuah Khan, Shuah Khan, Linus Torvalds
Revision v7 of 9 in this series.
Revisions (9)
Add tc-testing case 83c0: build a TBF + fq_pie hierarchy on $DUMMY, push traffic through it with ping, and verify that 'tc -s class show' reports an fq_pie class. The per-flow counters themselves (prob, delay, deficit) are printed only after the companion iproute2 change, "tc: fq_pie: add support for printing per-flow PIE statistics" Signed-off-by: Hemendra M. Naik <redacted> Signed-off-by: Vishal Kamath <redacted> Signed-off-by: Mohit P. Tahiliani <redacted> --- .../tc-testing/tc-tests/qdiscs/fq_pie.json | 27 +++++++++++++++++++ 1 file changed, 27 insertions(+)
diff --git a/tools/testing/selftests/tc-testing/tc-tests/qdiscs/fq_pie.json b/tools/testing/selftests/tc-testing/tc-tests/qdiscs/fq_pie.json
index 229fe1bf4a906..15b2667285eb4 100644
--- a/tools/testing/selftests/tc-testing/tc-tests/qdiscs/fq_pie.json
+++ b/tools/testing/selftests/tc-testing/tc-tests/qdiscs/fq_pie.json@@ -40,5 +40,32 @@ "matchPattern": "qdisc fq_pie 1: root refcnt [0-9]+ limit 1p", "matchCount": "1", "teardown": ["$TC qdisc del dev $DEV1 handle 1: root"] + }, + { + "id": "83c0", + "name": "FQ-PIE class stats accessible via tc class show", + "category": [ + "qdisc", + "fq_pie" + ], + "plugins": { + "requires": "nsPlugin" + }, + "setup": [ + "$IP link set dev $DUMMY up || true", + "$IP addr add 10.10.11.10/24 dev $DUMMY || true", + "$TC qdisc add dev $DUMMY root handle 1: tbf rate 8bit burst 100b latency 100ms", + "$TC qdisc add dev $DUMMY parent 1:1 handle 2: fq_pie limit 100 flows 1", + "ping -c 50 -i 0.001 -W 0.01 -s 56 10.10.11.11 -I $DUMMY > /dev/null 2>&1 || true" + ], + "cmdUnderTest": "$TC -s class show dev $DUMMY", + "expExitCode": "0", + "verifyCmd": "$TC -s class show dev $DUMMY", + "matchPattern": "class fq_pie 2:[0-9]+ .*prob .*delay .*deficit", + "matchCount": "1", + "teardown": [ + "$TC qdisc del dev $DUMMY handle 1: root", + "$IP addr del 10.10.11.10/24 dev $DUMMY || true" + ] } ]
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2.34.1