diff options
Diffstat (limited to 'net/sched')
| -rw-r--r-- | net/sched/sch_generic.c | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c index a8240c578772..07200bfebf00 100644 --- a/net/sched/sch_generic.c +++ b/net/sched/sch_generic.c @@ -71,12 +71,9 @@ void qdisc_unlock_tree(struct net_device *dev) /* Kick device. - Note, that this procedure can be called by a watchdog timer, so that - we do not check dev->tbusy flag here. - Returns: 0 - queue is empty. - >0 - queue is not empty, but throttled. - <0 - queue is not empty. Device is throttled, if dev->tbusy != 0. + Returns: 0 - queue is empty or throttled. + >0 - queue is not empty. NOTE: Called under dev->queue_lock with locally disabled BH. */ @@ -115,7 +112,7 @@ static inline int qdisc_restart(struct net_device *dev) kfree_skb(skb); if (net_ratelimit()) printk(KERN_DEBUG "Dead loop on netdevice %s, fix it urgently!\n", dev->name); - return -1; + goto out; } __get_cpu_var(netdev_rx_stat).cpu_collision++; goto requeue; @@ -135,7 +132,7 @@ static inline int qdisc_restart(struct net_device *dev) netif_tx_unlock(dev); } spin_lock(&dev->queue_lock); - return -1; + goto out; } if (ret == NETDEV_TX_LOCKED && nolock) { spin_lock(&dev->queue_lock); @@ -169,8 +166,10 @@ requeue: else q->ops->requeue(skb, q); netif_schedule(dev); - return 1; + return 0; } + +out: BUG_ON((int) q->q.qlen < 0); return q->q.qlen; } @@ -180,8 +179,10 @@ void __qdisc_run(struct net_device *dev) if (unlikely(dev->qdisc == &noop_qdisc)) goto out; - while (qdisc_restart(dev) < 0 && !netif_queue_stopped(dev)) - /* NOTHING */; + do { + if (!qdisc_restart(dev)) + break; + } while (!netif_queue_stopped(dev)); out: clear_bit(__LINK_STATE_QDISC_RUNNING, &dev->state); |