From 03c05f0d4bb0c267edf12d614025a40e33c5a6f9 Mon Sep 17 00:00:00 2001 From: Jarek Poplawski Date: Fri, 31 Oct 2008 00:46:19 -0700 Subject: pkt_sched: Use qdisc->ops->peek() instead of ->dequeue() & ->requeue() Use qdisc->ops->peek() instead of ->dequeue() & ->requeue() pair. After this patch the only remaining user of qdisc->ops->requeue() is netem_enqueue(). Based on ideas of Herbert Xu, Patrick McHardy and David S. Miller. Signed-off-by: Jarek Poplawski Signed-off-by: David S. Miller --- net/sched/sch_tbf.c | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-) (limited to 'net/sched/sch_tbf.c') diff --git a/net/sched/sch_tbf.c b/net/sched/sch_tbf.c index 94c61598b86a..61fdc77a48d2 100644 --- a/net/sched/sch_tbf.c +++ b/net/sched/sch_tbf.c @@ -169,7 +169,7 @@ static struct sk_buff *tbf_dequeue(struct Qdisc* sch) struct tbf_sched_data *q = qdisc_priv(sch); struct sk_buff *skb; - skb = q->qdisc->dequeue(q->qdisc); + skb = q->qdisc->ops->peek(q->qdisc); if (skb) { psched_time_t now; @@ -192,6 +192,10 @@ static struct sk_buff *tbf_dequeue(struct Qdisc* sch) toks -= L2T(q, len); if ((toks|ptoks) >= 0) { + skb = q->qdisc->dequeue(q->qdisc); + if (unlikely(!skb)) + return NULL; + q->t_c = now; q->tokens = toks; q->ptokens = ptoks; @@ -214,12 +218,6 @@ static struct sk_buff *tbf_dequeue(struct Qdisc* sch) (cf. CSZ, HPFQ, HFSC) */ - if (q->qdisc->ops->requeue(skb, q->qdisc) != NET_XMIT_SUCCESS) { - /* When requeue fails skb is dropped */ - qdisc_tree_decrease_qlen(q->qdisc, 1); - sch->qstats.drops++; - } - sch->qstats.overlimits++; } return NULL; -- cgit v1.2.3