diff options
| -rw-r--r-- | net/sched/sch_generic.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c index 2efd5b61acef..ad24fa1a51e6 100644 --- a/net/sched/sch_generic.c +++ b/net/sched/sch_generic.c @@ -1037,10 +1037,9 @@ static void attach_one_default_qdisc(struct net_device *dev, ops = &pfifo_fast_ops; qdisc = qdisc_create_dflt(dev_queue, ops, TC_H_ROOT, NULL); - if (!qdisc) { - netdev_info(dev, "activation failed\n"); + if (!qdisc) return; - } + if (!netif_is_multiqueue(dev)) qdisc->flags |= TCQ_F_ONETXQUEUE | TCQ_F_NOPARENT; dev_queue->qdisc_sleeping = qdisc; @@ -1065,6 +1064,18 @@ static void attach_default_qdiscs(struct net_device *dev) qdisc->ops->attach(qdisc); } } + + /* Detect default qdisc setup/init failed and fallback to "noqueue" */ + if (dev->qdisc == &noop_qdisc) { + netdev_warn(dev, "default qdisc (%s) fail, fallback to %s\n", + default_qdisc_ops->id, noqueue_qdisc_ops.id); + dev->priv_flags |= IFF_NO_QUEUE; + netdev_for_each_tx_queue(dev, attach_one_default_qdisc, NULL); + dev->qdisc = txq->qdisc_sleeping; + qdisc_refcount_inc(dev->qdisc); + dev->priv_flags ^= IFF_NO_QUEUE; + } + #ifdef CONFIG_NET_SCHED if (dev->qdisc != &noop_qdisc) qdisc_hash_add(dev->qdisc, false); |