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[CORE] Stack changes to add multiqueue hardware support API

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Add the multiqueue hardware device support API to the core network
stack.  Allow drivers to allocate multiple queues and manage them at
the netdev level if they choose to do so.

Added a new field to sk_buff, namely queue_mapping, for drivers to
know which tx_ring to select based on OS classification of the flow.

Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Peter P Waskiewicz Jr
2007-07-06 13:36:20 -07:00
committed by David S. Miller
parent a093bf006e
commit f25f4e4480
10 changed files with 158 additions and 30 deletions
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net/core/netpoll.c
+5 -3
View File
@@ -66,8 +66,9 @@ static void queue_process(struct work_struct *work)
local_irq_save(flags);
netif_tx_lock(dev);
if (netif_queue_stopped(dev) ||
dev->hard_start_xmit(skb, dev) != NETDEV_TX_OK) {
if ((netif_queue_stopped(dev) ||
netif_subqueue_stopped(dev, skb->queue_mapping)) ||
dev->hard_start_xmit(skb, dev) != NETDEV_TX_OK) {
skb_queue_head(&npinfo->txq, skb);
netif_tx_unlock(dev);
local_irq_restore(flags);
@@ -254,7 +255,8 @@ static void netpoll_send_skb(struct netpoll *np, struct sk_buff *skb)
for (tries = jiffies_to_usecs(1)/USEC_PER_POLL;
tries > 0; --tries) {
if (netif_tx_trylock(dev)) {
if (!netif_queue_stopped(dev))
if (!netif_queue_stopped(dev) &&
!netif_subqueue_stopped(dev, skb->queue_mapping))
status = dev->hard_start_xmit(skb, dev);
netif_tx_unlock(dev);