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| author | Dave Airlie <airlied@redhat.com> | 2010-08-02 10:05:18 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2010-08-02 10:05:24 +1000 |
| commit | d656ae53f64cb0f01dac8a02c4d31453d64ef97c (patch) | |
| tree | cf641d4e5828b8f7c430b42657237c5daf9571fd /net/core/dev.c | |
| parent | 167ffc44caaee68ea60dadf6931a4d195a4ed1f0 (diff) | |
| parent | b37fa16e78d6f9790462b3181602a26b5af36260 (diff) | |
| download | talos-op-linux-d656ae53f64cb0f01dac8a02c4d31453d64ef97c.tar.gz talos-op-linux-d656ae53f64cb0f01dac8a02c4d31453d64ef97c.zip | |
Merge tag 'v2.6.35-rc6' into drm-radeon-next
Need this to avoid conflicts with future radeon fixes
Diffstat (limited to 'net/core/dev.c')
| -rw-r--r-- | net/core/dev.c | 38 |
1 files changed, 31 insertions, 7 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index 2b3bf53bc687..0ea10f849be8 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -1553,6 +1553,24 @@ static void dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev) rcu_read_unlock(); } +/* + * Routine to help set real_num_tx_queues. To avoid skbs mapped to queues + * greater then real_num_tx_queues stale skbs on the qdisc must be flushed. + */ +void netif_set_real_num_tx_queues(struct net_device *dev, unsigned int txq) +{ + unsigned int real_num = dev->real_num_tx_queues; + + if (unlikely(txq > dev->num_tx_queues)) + ; + else if (txq > real_num) + dev->real_num_tx_queues = txq; + else if (txq < real_num) { + dev->real_num_tx_queues = txq; + qdisc_reset_all_tx_gt(dev, txq); + } +} +EXPORT_SYMBOL(netif_set_real_num_tx_queues); static inline void __netif_reschedule(struct Qdisc *q) { @@ -1893,8 +1911,16 @@ static int dev_gso_segment(struct sk_buff *skb) */ static inline void skb_orphan_try(struct sk_buff *skb) { - if (!skb_tx(skb)->flags) + struct sock *sk = skb->sk; + + if (sk && !skb_tx(skb)->flags) { + /* skb_tx_hash() wont be able to get sk. + * We copy sk_hash into skb->rxhash + */ + if (!skb->rxhash) + skb->rxhash = sk->sk_hash; skb_orphan(skb); + } } int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev, @@ -1980,8 +2006,7 @@ u16 skb_tx_hash(const struct net_device *dev, const struct sk_buff *skb) if (skb->sk && skb->sk->sk_hash) hash = skb->sk->sk_hash; else - hash = (__force u16) skb->protocol; - + hash = (__force u16) skb->protocol ^ skb->rxhash; hash = jhash_1word(hash, hashrnd); return (u16) (((u64) hash * dev->real_num_tx_queues) >> 32); @@ -2004,12 +2029,11 @@ static inline u16 dev_cap_txqueue(struct net_device *dev, u16 queue_index) static struct netdev_queue *dev_pick_tx(struct net_device *dev, struct sk_buff *skb) { - u16 queue_index; + int queue_index; struct sock *sk = skb->sk; - if (sk_tx_queue_recorded(sk)) { - queue_index = sk_tx_queue_get(sk); - } else { + queue_index = sk_tx_queue_get(sk); + if (queue_index < 0) { const struct net_device_ops *ops = dev->netdev_ops; if (ops->ndo_select_queue) { |
