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net_sched: dsmark: use qdisc_dequeue_peeked()

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This fix is for dsmark similar to commit 3557619f0f6f7496ed453d4825e249
("net_sched: prio: use qdisc_dequeue_peeked")
and makes use of qdisc_dequeue_peeked() instead of direct dequeue() call.

First time, wrr peeks dsmark, which will then peek into sfq.
sfq dequeues an skb and it's stored in sch->gso_skb.
Next time, wrr tries to dequeue from dsmark, which will call sfq dequeue
directly. This results skipping the previously peeked skb.

So changed dsmark dequeue to call qdisc_dequeue_peeked() instead to use
peeked skb if exists.

Signed-off-by: Kyeong Yoo <kyeong.yoo@alliedtelesis.co.nz>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kyeong Yoo 2016-03-07 17:07:57 +13:00 committed by David S. Miller
parent 4c38cd61ae
commit f8b33d8e87
1 changed files with 1 additions and 1 deletions
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2
net/sched/sch_dsmark.c
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@ -276,7 +276,7 @@ static struct sk_buff *dsmark_dequeue(struct Qdisc *sch)
pr_debug("%s(sch %p,[qdisc %p])\n", __func__, sch, p);
skb = p->q->ops->dequeue(p->q);
skb = qdisc_dequeue_peeked(p->q);
if (skb == NULL)
return NULL;