From a4ee3ce3293dc931fab19beb472a8bde1295aebe Mon Sep 17 00:00:00 2001 From: Krishna Kumar Date: Mon, 19 Oct 2009 23:50:07 +0000 Subject: [PATCH] net: Use sk_tx_queue_mapping for connected sockets For connected sockets, the first run of dev_pick_tx saves the calculated txq in sk_tx_queue_mapping. This is not saved if either the device has a queue select or the socket is not connected. Next iterations of dev_pick_tx uses the cached value of sk_tx_queue_mapping. Signed-off-by: Krishna Kumar Signed-off-by: David S. Miller --- net/core/dev.c | 24 ++++++++++++++++++------ 1 file changed, 18 insertions(+), 6 deletions(-) diff --git a/net/core/dev.c b/net/core/dev.c index 28b0b9e..fa88dcd 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -1791,13 +1791,25 @@ EXPORT_SYMBOL(skb_tx_hash); static struct netdev_queue *dev_pick_tx(struct net_device *dev, struct sk_buff *skb) { - const struct net_device_ops *ops = dev->netdev_ops; - u16 queue_index = 0; + u16 queue_index; + struct sock *sk = skb->sk; + + if (sk_tx_queue_recorded(sk)) { + queue_index = sk_tx_queue_get(sk); + } else { + const struct net_device_ops *ops = dev->netdev_ops; - if (ops->ndo_select_queue) - queue_index = ops->ndo_select_queue(dev, skb); - else if (dev->real_num_tx_queues > 1) - queue_index = skb_tx_hash(dev, skb); + if (ops->ndo_select_queue) { + queue_index = ops->ndo_select_queue(dev, skb); + } else { + queue_index = 0; + if (dev->real_num_tx_queues > 1) + queue_index = skb_tx_hash(dev, skb); + + if (sk && sk->sk_dst_cache) + sk_tx_queue_set(sk, queue_index); + } + } skb_set_queue_mapping(skb, queue_index); return netdev_get_tx_queue(dev, queue_index); -- 2.7.4