Commit 18c889a9 authored by Toke Høiland-Jørgensen's avatar Toke Høiland-Jørgensen Committed by Jakub Kicinski
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selftests/tc-testing: Add test for echo of big TC filters 



Add a selftest that checks whether the kernel can successfully echo a
big tc filter, to test the fix introduced in commit:

369609fc ("tc: Ensure we have enough buffer space when sending filter netlink notifications")

Signed-off-by: default avatarToke Høiland-Jørgensen <toke@redhat.com>
Tested-by: default avatarVictor Nogueira <victor@mojatatu.com>
Link: https://patch.msgid.link/20250410104322.214620-1-toke@redhat.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 752e2217

tools/testing/selftests/tc-testing/tc-tests/infra/actions.json

+22 −0
Original line number Diff line number Diff line
@@ -412,5 +412,27 @@ 
        "teardown": [

            "$TC qdisc del dev $DUMMY ingress"

        ]

    },

    {

        "id": "33f4",

        "name": "Check echo of big filter command",

        "category": [

            "infra",

            "u32"

        ],

        "plugins": {

            "requires": "nsPlugin"

        },

        "setup": [

            "$TC qdisc add dev $DUMMY parent root handle 10: fq_codel"

        ],

        "cmdUnderTest": "bash -c '$TC -echo filter add dev $DUMMY parent 10: u32 match u32 0 0 $(for i in $(seq 32); do echo action pedit munge ip dport set 22; done) | grep \"added filter\"'",

        "verifyCmd": "",

        "expExitCode": "0",

        "matchCount": "0",

        "matchPattern": "",

        "teardown": [

            "$TC qdisc del dev $DUMMY parent root fq_codel"

        ]

    }

]