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net: sched: ignore tx_queue_len when assigning default qdisc 

Since alloc_netdev_mqs() sets IFF_NO_QUEUE for drivers not initializing
tx_queue_len, it is safe to assume that if tx_queue_len is zero,
dev->priv flags always contains IFF_NO_QUEUE.

Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Phil Sutter 2015-08-27 21:21:37 +02:00 committed by David S. Miller
parent f84bb1eac0
commit db4094bca7
1 changed files with 1 additions and 2 deletions
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3
net/sched/sch_generic.c
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@ -735,7 +735,7 @@ static void attach_one_default_qdisc(struct net_device *dev,
{
struct Qdisc *qdisc = &noqueue_qdisc;
if (dev->tx_queue_len && !(dev->priv_flags & IFF_NO_QUEUE)) {
if (!(dev->priv_flags & IFF_NO_QUEUE)) {
qdisc = qdisc_create_dflt(dev_queue,
default_qdisc_ops, TC_H_ROOT);
if (!qdisc) {
@ -756,7 +756,6 @@ static void attach_default_qdiscs(struct net_device *dev)
txq = netdev_get_tx_queue(dev, 0);
if (!netif_is_multiqueue(dev) ||
dev->tx_queue_len == 0 ||
dev->priv_flags & IFF_NO_QUEUE) {
netdev_for_each_tx_queue(dev, attach_one_default_qdisc, NULL);
dev->qdisc = txq->qdisc_sleeping;