Commit 88b06e4f authored by William Liu's avatar William Liu Committed by Jakub Kicinski
Browse files

selftests/tc-testing: Test htb_dequeue_tree with deactivation and row emptying 



Ensure that any deactivation and row emptying that occurs
during htb_dequeue_tree does not cause a kernel panic.
This scenario originally triggered a kernel BUG_ON, and
we are checking for a graceful fail now.

Signed-off-by: default avatarWilliam Liu <will@willsroot.io>
Signed-off-by: default avatarSavino Dicanosa <savy@syst3mfailure.io>
Link: https://patch.msgid.link/20250717022912.221426-1-will@willsroot.io


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 0e1d5d9b

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

+26 −0
Original line number Diff line number Diff line
@@ -127,6 +127,32 @@ 
            "$IP addr del 10.10.10.10/24 dev $DUMMY"

        ]

    },

    {

        "id": "5456",

        "name": "Test htb_dequeue_tree with deactivation and row emptying",

        "category": [

            "qdisc",

            "htb"

        ],

        "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 64bit ",

            "$TC qdisc add dev $DUMMY parent 1:1 handle 2: netem",

            "$TC qdisc add dev $DUMMY parent 2:1 handle 3: blackhole"

        ],

        "cmdUnderTest": "ping -c1 -W0.01 -I $DUMMY 10.10.11.11",

        "expExitCode": "1",

        "verifyCmd": "$TC -j qdisc show dev $DUMMY",

        "matchJSON": [],

        "teardown": [

            "$TC qdisc del dev $DUMMY root"

        ]

    },

    {

        "id": "c024",

        "name": "Test TBF with SKBPRIO - catch qlen corner cases",