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authorDavid S. Miller <davem@davemloft.net>2008-07-08 23:13:53 -0700
committerDavid S. Miller <davem@davemloft.net>2008-07-08 23:13:53 -0700
commitc773e847ea8f6812804e40f52399c6921a00eab1 (patch)
tree952e0e262cc0b0f2136bc2a62938ae1d186f896a /net/core
parenteb6aafe3f843cb0e939546c03540a3b4911b6964 (diff)
netdev: Move _xmit_lock and xmit_lock_owner into netdev_queue.
Accesses are mostly structured such that when there are multiple TX queues the code transformations will be a little bit simpler. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
-rw-r--r--net/core/dev.c28
1 files changed, 20 insertions, 8 deletions
diff --git a/net/core/dev.c b/net/core/dev.c
index 0218b0b9be80..a29a359b15d1 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -258,7 +258,7 @@ DEFINE_PER_CPU(struct softnet_data, softnet_data);
#ifdef CONFIG_DEBUG_LOCK_ALLOC
/*
- * register_netdevice() inits dev->_xmit_lock and sets lockdep class
+ * register_netdevice() inits txq->_xmit_lock and sets lockdep class
* according to dev->type
*/
static const unsigned short netdev_lock_type[] =
@@ -1758,19 +1758,19 @@ gso:
if (dev->flags & IFF_UP) {
int cpu = smp_processor_id(); /* ok because BHs are off */
- if (dev->xmit_lock_owner != cpu) {
+ if (txq->xmit_lock_owner != cpu) {
- HARD_TX_LOCK(dev, cpu);
+ HARD_TX_LOCK(dev, txq, cpu);
if (!netif_queue_stopped(dev) &&
!netif_subqueue_stopped(dev, skb)) {
rc = 0;
if (!dev_hard_start_xmit(skb, dev)) {
- HARD_TX_UNLOCK(dev);
+ HARD_TX_UNLOCK(dev, txq);
goto out;
}
}
- HARD_TX_UNLOCK(dev);
+ HARD_TX_UNLOCK(dev, txq);
if (net_ratelimit())
printk(KERN_CRIT "Virtual device %s asks to "
"queue packet!\n", dev->name);
@@ -3761,6 +3761,20 @@ static void rollback_registered(struct net_device *dev)
dev_put(dev);
}
+static void __netdev_init_queue_locks_one(struct netdev_queue *dev_queue,
+ struct net_device *dev)
+{
+ spin_lock_init(&dev_queue->_xmit_lock);
+ netdev_set_lockdep_class(&dev_queue->_xmit_lock, dev->type);
+ dev_queue->xmit_lock_owner = -1;
+}
+
+static void netdev_init_queue_locks(struct net_device *dev)
+{
+ __netdev_init_queue_locks_one(&dev->tx_queue, dev);
+ __netdev_init_queue_locks_one(&dev->rx_queue, dev);
+}
+
/**
* register_netdevice - register a network device
* @dev: device to register
@@ -3795,9 +3809,7 @@ int register_netdevice(struct net_device *dev)
BUG_ON(!dev_net(dev));
net = dev_net(dev);
- spin_lock_init(&dev->_xmit_lock);
- netdev_set_lockdep_class(&dev->_xmit_lock, dev->type);
- dev->xmit_lock_owner = -1;
+ netdev_init_queue_locks(dev);
dev->iflink = -1;