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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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selftests/tc-testing: Create tests trying to add children to clsact/ingress qdiscs

In response to Wang's bug report [1], add the following test cases:

- Try and fail to add an fq child to an ingress qdisc
- Try and fail to add an fq child to a clsact qdisc

[1] https://lore.kernel.org/netdev/20251105022213.1981982-1-wangliang74@huawei.com/

Reviewed-by: Pedro Tammela <pctammela@mojatatu.ai>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Victor Nogueira <victor@mojatatu.com>
Reviewed-by: Cong Wang <cwang@multikernel.io>
Link: https://patch.msgid.link/20251106205621.3307639-2-victor@mojatatu.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

authored by

Victor Nogueira and committed by
Jakub Kicinski 60260ad9 e781122d

+44
+44
tools/testing/selftests/tc-testing/tc-tests/infra/qdiscs.json
··· 961 961 "teardown": [ 962 962 "$TC qdisc del dev $DUMMY root" 963 963 ] 964 + }, 965 + { 966 + "id": "4989", 967 + "name": "Try to add an fq child to an ingress qdisc", 968 + "category": [ 969 + "qdisc", 970 + "ingress" 971 + ], 972 + "plugins": { 973 + "requires": "nsPlugin" 974 + }, 975 + "setup": [ 976 + "$TC qdisc add dev $DUMMY handle ffff:0 ingress" 977 + ], 978 + "cmdUnderTest": "$TC qdisc add dev $DUMMY parent ffff:0 handle ffe0:0 fq", 979 + "expExitCode": "2", 980 + "verifyCmd": "$TC -j qdisc ls dev $DUMMY handle ffe0:", 981 + "matchJSON": [], 982 + "matchCount": "1", 983 + "teardown": [ 984 + "$TC qdisc del dev $DUMMY ingress" 985 + ] 986 + }, 987 + { 988 + "id": "c2b0", 989 + "name": "Try to add an fq child to a clsact qdisc", 990 + "category": [ 991 + "qdisc", 992 + "ingress" 993 + ], 994 + "plugins": { 995 + "requires": "nsPlugin" 996 + }, 997 + "setup": [ 998 + "$TC qdisc add dev $DUMMY handle ffff:0 clsact" 999 + ], 1000 + "cmdUnderTest": "$TC qdisc add dev $DUMMY parent ffff:0 handle ffe0:0 fq", 1001 + "expExitCode": "2", 1002 + "verifyCmd": "$TC -j qdisc ls dev $DUMMY handle ffe0:", 1003 + "matchJSON": [], 1004 + "matchCount": "1", 1005 + "teardown": [ 1006 + "$TC qdisc del dev $DUMMY clsact" 1007 + ] 964 1008 } 965 1009 ]