[PATCH net 2/2] selftests: tc-testing: add cls_route no-routing-attribute change tests
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COOLING13d
LANDED: 2 (2M)
From: Victor Nogueira <hidden>
Date: 2026-10-01 15:32:19
Also in:
linux-kselftest
Subsystem:
kernel selftest framework, the rest · Maintainers:
Shuah Khan, Shuah Khan, Linus Torvalds
1 review trailer; landed in mainline as 6fa2e7db99fb on 2026-10-07.
Add a boundary pair for route4 change without a routing attribute:
- a classid-only change of a wildcard filter (handle 0xffff8000) is a
metadata-only update and must succeed;
- the same change on a non-wildcard handle (0x10001) would rekey the
filter to the wildcard bucket, leaving the handle userspace stored stale,
and must be rejected with -EINVAL.
The change of a wildcard filter is the flow iproute2 uses by default
("tc filter add ... route classid X:Y" gives handle 0xffff8000).
Reviewed-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Victor Nogueira <redacted>
---
.../tc-testing/tc-tests/filters/route.json | 46 +++++++++++++++++++
1 file changed, 46 insertions(+)
diff --git a/tools/testing/selftests/tc-testing/tc-tests/filters/route.json b/tools/testing/selftests/tc-testing/tc-tests/filters/route.json
index 2d5843aebd72..c3b6ff157d3e 100644
--- a/tools/testing/selftests/tc-testing/tc-tests/filters/route.json
+++ b/tools/testing/selftests/tc-testing/tc-tests/filters/route.json@@ -412,5 +412,51 @@ "teardown": [ "$TC qdisc del dev $DEV1 ingress" ] + }, + { + "id": "4000", + "name": "Change a wildcard route filter classid only (no routing attribute)", + "category": [ + "filter", + "route" + ], + "plugins": { + "requires": "nsPlugin" + }, + "setup": [ + "$TC qdisc add dev $DEV1 ingress", + "$TC filter add dev $DEV1 parent ffff: protocol ip prio 100 route classid 1:1" + ], + "cmdUnderTest": "$TC filter change dev $DEV1 parent ffff: protocol ip prio 100 route classid 1:9", + "expExitCode": "0", + "verifyCmd": "$TC filter ls dev $DEV1 parent ffff:", + "matchPattern": "fh 0xffff8000 flowid 1:9", + "matchCount": "1", + "teardown": [ + "$TC qdisc del dev $DEV1 ingress" + ] + }, + { + "id": "907a", + "name": "Try to change a route filter with no routing attribute and a non-wildcard handle", + "category": [ + "filter", + "route" + ], + "plugins": { + "requires": "nsPlugin" + }, + "setup": [ + "$TC qdisc add dev $DEV1 ingress", + "$TC filter add dev $DEV1 parent ffff: protocol ip prio 100 route from 1 to 1 classid 1:1" + ], + "cmdUnderTest": "$TC filter change dev $DEV1 parent ffff: protocol ip prio 100 handle 0x10001 route classid 1:2", + "expExitCode": "2", + "verifyCmd": "$TC filter ls dev $DEV1 parent ffff:", + "matchPattern": "fh 0x00010001 flowid 1:1 to 1 from 1", + "matchCount": "1", + "teardown": [ + "$TC qdisc del dev $DEV1 ingress" + ] } ]
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2.43.0