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| author | Jarek Poplawski <jarkao2@gmail.com> | 2008-10-31 00:46:19 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-10-31 00:46:19 -0700 |
| commit | 03c05f0d4bb0c267edf12d614025a40e33c5a6f9 (patch) | |
| tree | c23b79ed8b7dfcdabb872f5c114541ae2de8ac0f /net/sched/sch_tbf.c | |
| parent | 8e3af97899db433111287e07d5105189f56fe191 (diff) | |
| download | linux-03c05f0d4bb0c267edf12d614025a40e33c5a6f9.tar.gz linux-03c05f0d4bb0c267edf12d614025a40e33c5a6f9.tar.bz2 linux-03c05f0d4bb0c267edf12d614025a40e33c5a6f9.zip | |
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 <jarkao2@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/sch_tbf.c')
| -rw-r--r-- | net/sched/sch_tbf.c | 12 |
1 files changed, 5 insertions, 7 deletions
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; |