Messages in this thread | | | Date | Thu, 3 Aug 2023 14:21:07 -0300 | Subject | Re: [PATCH v3 net-next 09/10] selftests/tc-testing: test that taprio can only be attached as root | From | Victor Nogueira <> |
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On 01/08/2023 15:24, Vladimir Oltean wrote: > Check that the "Can only be attached as root qdisc" error message from > taprio is effective by attempting to attach it to a class of another > taprio qdisc. That operation should fail. > > In the bug that was squashed by change "net/sched: taprio: try again to > report q->qdiscs[] to qdisc_leaf()", grafting a child taprio to a root > software taprio would be misinterpreted as a change() to the root > taprio. Catch this by looking at whether the base-time of the root > taprio has changed to follow the base-time of the child taprio, > something which should have absolutely never happened assuming correct > semantics. > > Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> > Reviewed-by: Pedro Tammela <pctammela@mojatatu.com> If I understood correctly, these tests depend on CONFIG_PTP_1588_CLOCK_MOCK. If that is the case, you should add it to the tdc config file (tools/testing/selftests/tc-testing/config).
cheers, Victor
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