Commit 5600c758 authored Sep 20, 2017 by Konstantin Khlebnikov Committed by Greg Kroah-Hartman Oct 12, 2017

net_sched: always reset qdisc backlog in qdisc_reset()




[ Upstream commit c8e1812960eeae42e2183154927028511c4bc566 ]

SKB stored in qdisc->gso_skb also counted into backlog.

Some qdiscs don't reset backlog to zero in ->reset(),
for example sfq just dequeue and free all queued skb.

Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Fixes: 2ccccf5f ("net_sched: update hierarchical backlog too")
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 93eef217

net/sched/sch_generic.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -681,6 +681,7 @@ void qdisc_reset(struct Qdisc *qdisc)
		qdisc->gso_skb = NULL;
		}
		qdisc->q.qlen = 0;
		qdisc->qstats.backlog = 0;
		}
		EXPORT_SYMBOL(qdisc_reset);