net: Clean up explicit ->tx_queue references in link watch.
First, we add a qdisc_tx_changing() helper which returns true if the
qdisc attachment is in transition.
Second, we remove an assertion warning which is of limited value and
is hard to express precisely in a multiqueue environment.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/link_watch.c b/net/core/link_watch.c
index 5021821..bf8f7af 100644
--- a/net/core/link_watch.c
+++ b/net/core/link_watch.c
@@ -77,12 +77,10 @@
}
-static int linkwatch_urgent_event(struct net_device *dev)
+static bool linkwatch_urgent_event(struct net_device *dev)
{
- struct netdev_queue *txq = &dev->tx_queue;
-
return netif_running(dev) && netif_carrier_ok(dev) &&
- txq->qdisc != txq->qdisc_sleeping;
+ qdisc_tx_changing(dev);
}
@@ -182,12 +180,9 @@
rfc2863_policy(dev);
if (dev->flags & IFF_UP) {
- if (netif_carrier_ok(dev)) {
- struct netdev_queue *txq = &dev->tx_queue;
-
- WARN_ON(txq->qdisc_sleeping == &noop_qdisc);
+ if (netif_carrier_ok(dev))
dev_activate(dev);
- } else
+ else
dev_deactivate(dev);
netdev_state_change(dev);
@@ -218,7 +213,7 @@
void linkwatch_fire_event(struct net_device *dev)
{
- int urgent = linkwatch_urgent_event(dev);
+ bool urgent = linkwatch_urgent_event(dev);
if (!test_and_set_bit(__LINK_STATE_LINKWATCH_PENDING, &dev->state)) {
dev_hold(dev);