selftests/tc-testing: verify that a qdisc can be grafted onto a taprio class
authorVladimir Oltean <vladimir.oltean@nxp.com>
Mon, 7 Aug 2023 19:33:24 +0000 (22:33 +0300)
committerJakub Kicinski <kuba@kernel.org>
Wed, 9 Aug 2023 22:59:21 +0000 (15:59 -0700)
commit29c298d2bc82ccdbd23bf08bbafeb4e874832946
tree22df015b777476e8faa196541acc50486fed7fd3
parent1890cf08bd9992558bfbe710a008a12209389c9b
selftests/tc-testing: verify that a qdisc can be grafted onto a taprio class

The reason behind commit af7b29b1deaa ("Revert "net/sched: taprio: make
qdisc_leaf() see the per-netdev-queue pfifo child qdiscs"") was that the
patch it reverted caused a crash when attaching a CBS shaper to one of
the taprio classes. Prevent that from happening again by adding a test
case for it, which now passes correctly in both offload and software
modes.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Pedro Tammela <pctammela@mojatatu.com>
Link: https://lore.kernel.org/r/20230807193324.4128292-12-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
tools/testing/selftests/tc-testing/tc-tests/qdiscs/taprio.json