pkt_sched: Make qdisc_run take a netdev_queue.

This allows us to use this calling convention all the way down into
qdisc_restart().

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

3 files changed, 21 insertions, 17 deletions

diff --git a/include/net/pkt_sched.h b/include/net/pkt_sched.h
index 8e3a0c4e9d97..2311d242bb35 100644
--- a/include/net/pkt_sched.h
+++ b/include/net/pkt_sched.h
@@ -84,13 +84,15 @@ extern struct qdisc_rate_table *qdisc_get_rtab(struct tc_ratespec *r,
                 struct nlattr *tab);
 extern void qdisc_put_rtab(struct qdisc_rate_table *tab);
 
-extern void __qdisc_run(struct net_device *dev);
+extern void __qdisc_run(struct netdev_queue *txq);
 
-static inline void qdisc_run(struct net_device *dev)
+static inline void qdisc_run(struct netdev_queue *txq)
 {
+        struct net_device *dev = txq->dev;
+
         if (!netif_queue_stopped(dev) &&
             !test_and_set_bit(__LINK_STATE_QDISC_RUNNING, &dev->state))
-                __qdisc_run(dev);
+                __qdisc_run(txq);
 }
 
 extern int tc_classify_compat(struct sk_buff *skb, struct tcf_proto *tp,
diff --git a/net/core/dev.c b/net/core/dev.c
index 0dc888ad4217..0218b0b9be80 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1734,7 +1734,7 @@ gso:
                         /* reset queue_mapping to zero */
                         skb_set_queue_mapping(skb, 0);
                         rc = q->enqueue(skb, q);
-                        qdisc_run(dev);
+                        qdisc_run(txq);
                         spin_unlock(&txq->lock);
 
                         rc = rc == NET_XMIT_BYPASS ? NET_XMIT_SUCCESS : rc;
@@ -1930,7 +1930,7 @@ static void net_tx_action(struct softirq_action *h)
                         clear_bit(__LINK_STATE_SCHED, &dev->state);
 
                         if (spin_trylock(&txq->lock)) {
-                                qdisc_run(dev);
+                                qdisc_run(txq);
                                 spin_unlock(&txq->lock);
                         } else {
                                 netif_schedule_queue(txq);
diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
index 407dfdb142a4..fcc7533f0bcc 100644
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -75,9 +75,8 @@ static inline int dev_requeue_skb(struct sk_buff *skb,
         return 0;
 }
 
-static inline struct sk_buff *dev_dequeue_skb(struct net_device *dev,
-                                              struct netdev_queue *dev_queue,
-                                              struct Qdisc *q)
+static inline struct sk_buff *dequeue_skb(struct netdev_queue *dev_queue,
+                                          struct Qdisc *q)
 {
         struct sk_buff *skb;
 
@@ -90,10 +89,10 @@ 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)
 {
+        struct net_device *dev = dev_queue->dev;
         int ret;
 
         if (unlikely(dev->xmit_lock_owner == smp_processor_id())) {
@@ -139,21 +138,23 @@ static inline int handle_dev_cpu_collision(struct sk_buff *skb,
  *                              >0 - queue is not empty.
  *
  */
-static inline int qdisc_restart(struct net_device *dev)
+static inline int qdisc_restart(struct netdev_queue *txq)
 {
-        struct netdev_queue *txq = &dev->tx_queue;
         struct Qdisc *q = txq->qdisc;
-        struct sk_buff *skb;
         int ret = NETDEV_TX_BUSY;
+        struct net_device *dev;
+        struct sk_buff *skb;
 
         /* Dequeue packet */
-        if (unlikely((skb = dev_dequeue_skb(dev, txq, q)) == NULL))
+        if (unlikely((skb = dequeue_skb(txq, q)) == NULL))
                 return 0;
 
 
         /* And release queue */
         spin_unlock(&txq->lock);
 
+        dev = txq->dev;
+
         HARD_TX_LOCK(dev, smp_processor_id());
         if (!netif_subqueue_stopped(dev, skb))
                 ret = dev_hard_start_xmit(skb, dev);
@@ -170,7 +171,7 @@ static inline int qdisc_restart(struct net_device *dev)
 
         case NETDEV_TX_LOCKED:
                 /* Driver try lock failed */
-                ret = handle_dev_cpu_collision(skb, dev, txq, q);
+                ret = handle_dev_cpu_collision(skb, txq, q);
                 break;
 
         default:
@@ -186,11 +187,12 @@ static inline int qdisc_restart(struct net_device *dev)
         return ret;
 }
 
-void __qdisc_run(struct net_device *dev)
+void __qdisc_run(struct netdev_queue *txq)
 {
+        struct net_device *dev = txq->dev;
         unsigned long start_time = jiffies;
 
-        while (qdisc_restart(dev)) {
+        while (qdisc_restart(txq)) {
                 if (netif_queue_stopped(dev))
                         break;
 
@@ -200,7 +202,7 @@ void __qdisc_run(struct net_device *dev)
                  * 2. we've been doing it for too long.
                  */
                 if (need_resched() || jiffies != start_time) {
-                        netif_schedule_queue(&dev->tx_queue);
+                        netif_schedule_queue(txq);
                         break;
                 }
         }