netdev: Allocate multiple queues for TX.

alloc_netdev_mq() now allocates an array of netdev_queue
structures for TX, based upon the queue_count argument.

Furthermore, all accesses to the TX queues are now vectored
through the netdev_get_tx_queue() and netdev_for_each_tx_queue()
interfaces.  This makes it easy to grep the tree for all
things that want to get to a TX queue of a net device.

Problem spots which are not really multiqueue aware yet, and
only work with one queue, can easily be spotted by grepping
for all netdev_get_tx_queue() calls that pass in a zero index.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 4 deletions

diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index 6b985f23fd9f..f42bc2b26b85 100644
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -570,16 +570,18 @@ static void vlan_dev_set_rx_mode(struct net_device *vlan_dev)
  */
 static struct lock_class_key vlan_netdev_xmit_lock_key;
 
-static void vlan_dev_set_lockdep_one(struct netdev_queue *txq,
-                                     int subclass)
+static void vlan_dev_set_lockdep_one(struct net_device *dev,
+                                     struct netdev_queue *txq,
+                                     void *_subclass)
 {
         lockdep_set_class_and_subclass(&txq->_xmit_lock,
-                                       &vlan_netdev_xmit_lock_key, subclass);
+                                       &vlan_netdev_xmit_lock_key,
+                                       *(int *)_subclass);
 }
 
 static void vlan_dev_set_lockdep_class(struct net_device *dev, int subclass)
 {
-        vlan_dev_set_lockdep_one(&dev->tx_queue, subclass);
+        netdev_for_each_tx_queue(dev, vlan_dev_set_lockdep_one, &subclass);
 }
 
 static const struct header_ops vlan_header_ops = {