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pkt_sched: Make qdisc->gso_skb a list.

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The idea is that we can use this to get rid of
->requeue().

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2008-09-22 22:15:30 -07:00
parent 3d09274cc9
commit 242f8bfefe
2 changed files with 8 additions and 6 deletions
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2
include/net/sch_generic.h
View File

@ -52,7 +52,7 @@ struct Qdisc
u32 parent;
atomic_t refcnt;
unsigned long state;
struct sk_buff *gso_skb;
struct sk_buff_head requeue;
struct sk_buff_head q;
struct netdev_queue *dev_queue;
struct Qdisc *next_sched;

12
net/sched/sch_generic.c
View File

@ -45,7 +45,7 @@ static inline int qdisc_qlen(struct Qdisc *q)
static inline int dev_requeue_skb(struct sk_buff *skb, struct Qdisc *q)
{
if (unlikely(skb->next))
q->gso_skb = skb;
__skb_queue_head(&q->requeue, skb);
else
q->ops->requeue(skb, q);
@ -57,9 +57,8 @@ static inline struct sk_buff *dequeue_skb(struct Qdisc *q)
{
struct sk_buff *skb;
if ((skb = q->gso_skb))
q->gso_skb = NULL;
else
skb = __skb_dequeue(&q->requeue);
if (!skb)
skb = q->dequeue(q);
return skb;
@ -327,6 +326,7 @@ struct Qdisc noop_qdisc = {
.flags = TCQ_F_BUILTIN,
.ops = &noop_qdisc_ops,
.list = LIST_HEAD_INIT(noop_qdisc.list),
.requeue.lock = __SPIN_LOCK_UNLOCKED(noop_qdisc.q.lock),
.q.lock = __SPIN_LOCK_UNLOCKED(noop_qdisc.q.lock),
.dev_queue = &noop_netdev_queue,
};
@ -352,6 +352,7 @@ static struct Qdisc noqueue_qdisc = {
.flags = TCQ_F_BUILTIN,
.ops = &noqueue_qdisc_ops,
.list = LIST_HEAD_INIT(noqueue_qdisc.list),
.requeue.lock = __SPIN_LOCK_UNLOCKED(noqueue_qdisc.q.lock),
.q.lock = __SPIN_LOCK_UNLOCKED(noqueue_qdisc.q.lock),
.dev_queue = &noqueue_netdev_queue,
};
@ -472,6 +473,7 @@ struct Qdisc *qdisc_alloc(struct netdev_queue *dev_queue,
sch->padded = (char *) sch - (char *) p;
INIT_LIST_HEAD(&sch->list);
skb_queue_head_init(&sch->requeue);
skb_queue_head_init(&sch->q);
sch->ops = ops;
sch->enqueue = ops->enqueue;
@ -539,7 +541,7 @@ void qdisc_destroy(struct Qdisc *qdisc)
module_put(ops->owner);
dev_put(qdisc_dev(qdisc));
kfree_skb(qdisc->gso_skb);
__skb_queue_purge(&qdisc->requeue);
kfree((char *) qdisc - qdisc->padded);
}