From 77be155cba4e163e8bba9fd27222a8b6189ec4f7 Mon Sep 17 00:00:00 2001 From: Jarek Poplawski Date: Fri, 31 Oct 2008 00:47:01 -0700 Subject: pkt_sched: Add peek emulation for non-work-conserving qdiscs. This patch adds qdisc_peek_dequeued() wrapper to emulate peek method with qdisc->dequeue() and storing "peeked" skb in qdisc->gso_skb until dequeuing. This is mainly for compatibility reasons not to break some strange configs because peeking is expected for non-work-conserving parent qdiscs to query work-conserving child qdiscs. This implementation requires using qdisc_dequeue_peeked() wrapper instead of directly calling qdisc->dequeue() for all qdiscs ever querried with qdisc->ops->peek() or qdisc_peek_dequeued(). Signed-off-by: Jarek Poplawski Signed-off-by: David S. Miller --- net/sched/sch_atm.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'net/sched/sch_atm.c') diff --git a/net/sched/sch_atm.c b/net/sched/sch_atm.c index 2ee0c1a8efa9..6eb9a650b63d 100644 --- a/net/sched/sch_atm.c +++ b/net/sched/sch_atm.c @@ -484,7 +484,7 @@ static void sch_atm_dequeue(unsigned long data) if (!atm_may_send(flow->vcc, skb->truesize)) break; - skb = flow->q->dequeue(flow->q); + skb = qdisc_dequeue_peeked(flow->q); if (unlikely(!skb)) break; @@ -519,7 +519,7 @@ static struct sk_buff *atm_tc_dequeue(struct Qdisc *sch) pr_debug("atm_tc_dequeue(sch %p,[qdisc %p])\n", sch, p); tasklet_schedule(&p->task); - skb = p->link.q->dequeue(p->link.q); + skb = qdisc_dequeue_peeked(p->link.q); if (skb) sch->q.qlen--; return skb; -- cgit v1.2.3-59-g8ed1b