netdev: Move gso_skb into netdev_queue.

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

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 1379c82..aae6c6d 100644 (file)
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -452,6 +452,7 @@ struct netdev_queue {
        spinlock_t              lock;
        struct net_device       *dev;
        struct Qdisc            *qdisc;
+       struct sk_buff          *gso_skb;
        struct Qdisc            *qdisc_sleeping;
        struct list_head        qdisc_list;
        struct netdev_queue     *next_sched;
@@ -635,9 +636,6 @@ struct net_device
        struct netdev_queue     tx_queue ____cacheline_aligned_in_smp;
        unsigned long           tx_queue_len;   /* Max frames per queue allowed */
 
-       /* Partially transmitted GSO packet. */
-       struct sk_buff          *gso_skb;
-
 /*
  * One part is mostly used on xmit path (device)
  */

diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
index dda78ee..8247a40 100644 (file)
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -63,10 +63,11 @@ static inline int qdisc_qlen(struct Qdisc *q)
 }
 
 static inline int dev_requeue_skb(struct sk_buff *skb, struct net_device *dev,
+                                 struct netdev_queue *dev_queue,
                                  struct Qdisc *q)
 {
        if (unlikely(skb->next))
-               dev->gso_skb = skb;
+               dev_queue->gso_skb = skb;
        else
                q->ops->requeue(skb, q);
 
@@ -75,12 +76,13 @@ static inline int dev_requeue_skb(struct sk_buff *skb, struct net_device *dev,
 }
 
 static inline struct sk_buff *dev_dequeue_skb(struct net_device *dev,
+                                             struct netdev_queue *dev_queue,
                                              struct Qdisc *q)
 {
        struct sk_buff *skb;
 
-       if ((skb = dev->gso_skb))
-               dev->gso_skb = NULL;
+       if ((skb = dev_queue->gso_skb))
+               dev_queue->gso_skb = NULL;
        else
                skb = q->dequeue(q);
 
@@ -89,6 +91,7 @@ static inline struct sk_buff *dev_dequeue_skb(struct net_device *dev,
 
 static inline int handle_dev_cpu_collision(struct sk_buff *skb,
                                           struct net_device *dev,
+                                          struct netdev_queue *dev_queue,
                                           struct Qdisc *q)
 {
        int ret;
@@ -111,7 +114,7 @@ static inline int handle_dev_cpu_collision(struct sk_buff *skb,
                 * some time.
                 */
                __get_cpu_var(netdev_rx_stat).cpu_collision++;
-               ret = dev_requeue_skb(skb, dev, q);
+               ret = dev_requeue_skb(skb, dev, dev_queue, q);
        }
 
        return ret;
@@ -144,7 +147,7 @@ static inline int qdisc_restart(struct net_device *dev)
        int ret = NETDEV_TX_BUSY;
 
        /* Dequeue packet */
-       if (unlikely((skb = dev_dequeue_skb(dev, q)) == NULL))
+       if (unlikely((skb = dev_dequeue_skb(dev, txq, q)) == NULL))
                return 0;
 
 
@@ -167,7 +170,7 @@ static inline int qdisc_restart(struct net_device *dev)
 
        case NETDEV_TX_LOCKED:
                /* Driver try lock failed */
-               ret = handle_dev_cpu_collision(skb, dev, q);
+               ret = handle_dev_cpu_collision(skb, dev, txq, q);
                break;
 
        default:
@@ -176,7 +179,7 @@ static inline int qdisc_restart(struct net_device *dev)
                        printk(KERN_WARNING "BUG %s code %d qlen %d\n",
                               dev->name, ret, q->q.qlen);
 
-               ret = dev_requeue_skb(skb, dev, q);
+               ret = dev_requeue_skb(skb, dev, txq, q);
                break;
        }
 
@@ -578,31 +581,32 @@ void dev_activate(struct net_device *dev)
        spin_unlock_bh(&txq->lock);
 }
 
-static void dev_deactivate_queue(struct net_device *dev,
-                                struct netdev_queue *dev_queue,
+static void dev_deactivate_queue(struct netdev_queue *dev_queue,
                                 struct Qdisc *qdisc_default)
 {
-       struct Qdisc *qdisc = dev_queue->qdisc;
+       struct Qdisc *qdisc;
+       struct sk_buff *skb;
+
+       spin_lock_bh(&dev_queue->lock);
 
+       qdisc = dev_queue->qdisc;
        if (qdisc) {
                dev_queue->qdisc = qdisc_default;
                qdisc_reset(qdisc);
        }
+       skb = dev_queue->gso_skb;
+       dev_queue->gso_skb = NULL;
+
+       spin_unlock_bh(&dev_queue->lock);
+
+       kfree_skb(skb);
 }
 
 void dev_deactivate(struct net_device *dev)
 {
-       struct sk_buff *skb;
        int running;
 
-       spin_lock_bh(&dev->tx_queue.lock);
-       dev_deactivate_queue(dev, &dev->tx_queue, &noop_qdisc);
-
-       skb = dev->gso_skb;
-       dev->gso_skb = NULL;
-       spin_unlock_bh(&dev->tx_queue.lock);
-
-       kfree_skb(skb);
+       dev_deactivate_queue(&dev->tx_queue, &noop_qdisc);
 
        dev_watchdog_down(dev);