if (test_and_clear_bit(__LINK_STATE_NOCARRIER, &dev->state)) {
if (dev->reg_state == NETREG_UNINITIALIZED)
return;
- atomic_inc(&dev->carrier_changes);
+ atomic_inc(&dev->carrier_up_count);
linkwatch_fire_event(dev);
if (netif_running(dev))
__netdev_watchdog_up(dev);
if (!test_and_set_bit(__LINK_STATE_NOCARRIER, &dev->state)) {
if (dev->reg_state == NETREG_UNINITIALIZED)
return;
- atomic_inc(&dev->carrier_changes);
+ atomic_inc(&dev->carrier_down_count);
linkwatch_fire_event(dev);
}
}
qdisc_skb_head_init(&sch->q);
spin_lock_init(&sch->q.lock);
+ if (ops->static_flags & TCQ_F_CPUSTATS) {
+ sch->cpu_bstats =
+ netdev_alloc_pcpu_stats(struct gnet_stats_basic_cpu);
+ if (!sch->cpu_bstats)
+ goto errout1;
+
+ sch->cpu_qstats = alloc_percpu(struct gnet_stats_queue);
+ if (!sch->cpu_qstats) {
+ free_percpu(sch->cpu_bstats);
+ goto errout1;
+ }
+ }
+
spin_lock_init(&sch->busylock);
lockdep_set_class(&sch->busylock,
dev->qdisc_tx_busylock ?: &qdisc_tx_busylock);
dev->qdisc_running_key ?: &qdisc_running_key);
sch->ops = ops;
+ sch->flags = ops->static_flags;
sch->enqueue = ops->enqueue;
sch->dequeue = ops->dequeue;
sch->dev_queue = dev_queue;
refcount_set(&sch->refcnt, 1);
return sch;
+errout1:
+ kfree(p);
errout:
return ERR_PTR(err);
}
}
EXPORT_SYMBOL(qdisc_reset);
-static void qdisc_free(struct Qdisc *qdisc)
+void qdisc_free(struct Qdisc *qdisc)
{
if (qdisc_is_percpu_stats(qdisc)) {
free_percpu(qdisc->cpu_bstats);
root_lock = qdisc_lock(oqdisc);
spin_lock_bh(root_lock);
- /* Prune old scheduler */
- if (oqdisc && refcount_read(&oqdisc->refcnt) <= 1)
- qdisc_reset(oqdisc);
-
/* ... and graft new one */
if (qdisc == NULL)
qdisc = &noop_qdisc;
return false;
}
+static void dev_qdisc_reset(struct net_device *dev,
+ struct netdev_queue *dev_queue,
+ void *none)
+{
+ struct Qdisc *qdisc = dev_queue->qdisc_sleeping;
+
+ if (qdisc)
+ qdisc_reset(qdisc);
+}
+
/**
* dev_deactivate_many - deactivate transmissions on several devices
* @head: list of devices to deactivate
void dev_deactivate_many(struct list_head *head)
{
struct net_device *dev;
- bool sync_needed = false;
list_for_each_entry(dev, head, close_list) {
netdev_for_each_tx_queue(dev, dev_deactivate_queue,
&noop_qdisc);
dev_watchdog_down(dev);
- sync_needed |= !dev->dismantle;
}
/* Wait for outstanding qdisc-less dev_queue_xmit calls.
* This is avoided if all devices are in dismantle phase :
* Caller will call synchronize_net() for us
*/
- if (sync_needed)
- synchronize_net();
+ synchronize_net();
/* Wait for outstanding qdisc_run calls. */
- list_for_each_entry(dev, head, close_list)
+ list_for_each_entry(dev, head, close_list) {
while (some_qdisc_is_busy(dev))
yield();
+ /* The new qdisc is assigned at this point so we can safely
+ * unwind stale skb lists and qdisc statistics
+ */
+ netdev_for_each_tx_queue(dev, dev_qdisc_reset, NULL);
+ if (dev_ingress_queue(dev))
+ dev_qdisc_reset(dev, dev_ingress_queue(dev), NULL);
+ }
}
void dev_deactivate(struct net_device *dev)