net/sched: qfq: Use cl_is_active to determine whether class is active in qfq_rm_from_ag

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[ Upstream commit d837fbee92 ]

This is more of a preventive patch to make the code more consistent and
to prevent possible exploits that employ child qlen manipulations on qfq.
use cl_is_active instead of relying on the child qdisc's qlen to determine
class activation.

Fixes: 462dbc9101 ("pkt_sched: QFQ Plus: fair-queueing service at DRR cost")
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Link: https://patch.msgid.link/20260114160243.913069-3-jhs@mojatatu.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Jamal Hadi Salim 2026-01-14 11:02:42 -05:00 • committed by Greg Kroah-Hartman

parent 16ed73c128

commit 77f1afd0bb

1 changed files with 1 additions and 1 deletions

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net/sched/sch_qfq.c

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