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pkt_sched: Remove qdisc->ops->requeue() etc.

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After implementing qdisc->ops->peek() and changing sch_netem into
classless qdisc there are no more qdisc->ops->requeue() users. This
patch removes this method with its wrappers (qdisc_requeue()), and
also unused qdisc->requeue structure. There are a few minor fixes of
warnings (htb_enqueue()) and comments btw.

The idea to kill ->requeue() and a similar patch were first developed
by David S. Miller.

Signed-off-by: Jarek Poplawski <jarkao2@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jarek Poplawski
2008-11-13 22:56:30 -08:00
committed by David S. Miller
parent 38a7ddffa4
commit f30ab418a1
17 changed files with 4 additions and 394 deletions
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44
net/sched/sch_htb.c
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@ -551,7 +551,7 @@ static inline void htb_deactivate(struct htb_sched *q, struct htb_class *cl)
static int htb_enqueue(struct sk_buff *skb, struct Qdisc *sch)
{
int ret;
int uninitialized_var(ret);
struct htb_sched *q = qdisc_priv(sch);
struct htb_class *cl = htb_classify(skb, sch, &ret);
@ -591,47 +591,6 @@ static int htb_enqueue(struct sk_buff *skb, struct Qdisc *sch)
return NET_XMIT_SUCCESS;
}
/* TODO: requeuing packet charges it to policers again !! */
static int htb_requeue(struct sk_buff *skb, struct Qdisc *sch)
{
int ret;
struct htb_sched *q = qdisc_priv(sch);
struct htb_class *cl = htb_classify(skb, sch, &ret);
struct sk_buff *tskb;
if (cl == HTB_DIRECT) {
/* enqueue to helper queue */
if (q->direct_queue.qlen < q->direct_qlen) {
__skb_queue_head(&q->direct_queue, skb);
} else {
__skb_queue_head(&q->direct_queue, skb);
tskb = __skb_dequeue_tail(&q->direct_queue);
kfree_skb(tskb);
sch->qstats.drops++;
return NET_XMIT_CN;
}
#ifdef CONFIG_NET_CLS_ACT
} else if (!cl) {
if (ret & __NET_XMIT_BYPASS)
sch->qstats.drops++;
kfree_skb(skb);
return ret;
#endif
} else if ((ret = cl->un.leaf.q->ops->requeue(skb, cl->un.leaf.q)) !=
NET_XMIT_SUCCESS) {
if (net_xmit_drop_count(ret)) {
sch->qstats.drops++;
cl->qstats.drops++;
}
return ret;
} else
htb_activate(q, cl);
sch->q.qlen++;
sch->qstats.requeues++;
return NET_XMIT_SUCCESS;
}
/**
* htb_charge_class - charges amount "bytes" to leaf and ancestors
*
@ -1566,7 +1525,6 @@ static struct Qdisc_ops htb_qdisc_ops __read_mostly = {
.enqueue = htb_enqueue,
.dequeue = htb_dequeue,
.peek = qdisc_peek_dequeued,
.requeue = htb_requeue,
.drop = htb_drop,
.init = htb_init,
.reset = htb_reset,