diff options
Diffstat (limited to 'net/core/dev.c')
| -rw-r--r-- | net/core/dev.c | 34 |
1 files changed, 26 insertions, 8 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index a313bab..ce6ad88 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -2702,11 +2702,10 @@ EXPORT_SYMBOL_GPL(br_fdb_test_addr_hook); * the ingress scheduler, you just cant add policies on ingress. * */ -static int ing_filter(struct sk_buff *skb) +static int ing_filter(struct sk_buff *skb, struct netdev_queue *rxq) { struct net_device *dev = skb->dev; u32 ttl = G_TC_RTTL(skb->tc_verd); - struct netdev_queue *rxq; int result = TC_ACT_OK; struct Qdisc *q; @@ -2720,8 +2719,6 @@ static int ing_filter(struct sk_buff *skb) skb->tc_verd = SET_TC_RTTL(skb->tc_verd, ttl); skb->tc_verd = SET_TC_AT(skb->tc_verd, AT_INGRESS); - rxq = &dev->ingress_queue; - q = rxq->qdisc; if (q != &noop_qdisc) { spin_lock(qdisc_lock(q)); @@ -2737,7 +2734,9 @@ static inline struct sk_buff *handle_ing(struct sk_buff *skb, struct packet_type **pt_prev, int *ret, struct net_device *orig_dev) { - if (skb->dev->ingress_queue.qdisc == &noop_qdisc) + struct netdev_queue *rxq = rcu_dereference(skb->dev->ingress_queue); + + if (!rxq || rxq->qdisc == &noop_qdisc) goto out; if (*pt_prev) { @@ -2745,7 +2744,7 @@ static inline struct sk_buff *handle_ing(struct sk_buff *skb, *pt_prev = NULL; } - switch (ing_filter(skb)) { + switch (ing_filter(skb, rxq)) { case TC_ACT_SHOT: case TC_ACT_STOLEN: kfree_skb(skb); @@ -4940,7 +4939,6 @@ static void __netdev_init_queue_locks_one(struct net_device *dev, static void netdev_init_queue_locks(struct net_device *dev) { netdev_for_each_tx_queue(dev, __netdev_init_queue_locks_one, NULL); - __netdev_init_queue_locks_one(dev, &dev->ingress_queue, NULL); } unsigned long netdev_fix_features(unsigned long features, const char *name) @@ -5452,11 +5450,29 @@ static void netdev_init_one_queue(struct net_device *dev, static void netdev_init_queues(struct net_device *dev) { - netdev_init_one_queue(dev, &dev->ingress_queue, NULL); netdev_for_each_tx_queue(dev, netdev_init_one_queue, NULL); spin_lock_init(&dev->tx_global_lock); } +struct netdev_queue *dev_ingress_queue_create(struct net_device *dev) +{ + struct netdev_queue *queue = dev_ingress_queue(dev); + +#ifdef CONFIG_NET_CLS_ACT + if (queue) + return queue; + queue = kzalloc(sizeof(*queue), GFP_KERNEL); + if (!queue) + return NULL; + netdev_init_one_queue(dev, queue, NULL); + __netdev_init_queue_locks_one(dev, queue, NULL); + queue->qdisc = &noop_qdisc; + queue->qdisc_sleeping = &noop_qdisc; + rcu_assign_pointer(dev->ingress_queue, queue); +#endif + return queue; +} + /** * alloc_netdev_mq - allocate network device * @sizeof_priv: size of private data to allocate space for @@ -5559,6 +5575,8 @@ void free_netdev(struct net_device *dev) kfree(dev->_tx); + kfree(rcu_dereference_raw(dev->ingress_queue)); + /* Flush device addresses */ dev_addr_flush(dev); |