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net: add netif_tx_queue_frozen_or_stopped

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When testing struct netdev_queue state against FROZEN bit, we also test
XOFF bit. We can test both bits at once and save some cycles.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet
2010-11-23 10:42:02 +00:00
committed by David S. Miller
parent d3c15cab21
commit 5a0d2268d2
5 changed files with 10 additions and 12 deletions
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8
net/sched/sch_generic.c
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@ -60,8 +60,7 @@ static inline struct sk_buff *dequeue_skb(struct Qdisc *q)
/* check the reason of requeuing without tx lock first */
txq = netdev_get_tx_queue(dev, skb_get_queue_mapping(skb));
if (!netif_tx_queue_stopped(txq) &&
!netif_tx_queue_frozen(txq)) {
if (!netif_tx_queue_frozen_or_stopped(txq)) {
q->gso_skb = NULL;
q->q.qlen--;
} else
@ -122,7 +121,7 @@ int sch_direct_xmit(struct sk_buff *skb, struct Qdisc *q,
spin_unlock(root_lock);
HARD_TX_LOCK(dev, txq, smp_processor_id());
if (!netif_tx_queue_stopped(txq) && !netif_tx_queue_frozen(txq))
if (!netif_tx_queue_frozen_or_stopped(txq))
ret = dev_hard_start_xmit(skb, dev, txq);
HARD_TX_UNLOCK(dev, txq);
@ -144,8 +143,7 @@ int sch_direct_xmit(struct sk_buff *skb, struct Qdisc *q,
ret = dev_requeue_skb(skb, q);
}
if (ret && (netif_tx_queue_stopped(txq) ||
netif_tx_queue_frozen(txq)))
if (ret && netif_tx_queue_frozen_or_stopped(txq))
ret = 0;
return ret;