netdev: Make netif_schedule() routines work with netdev_queue objects.

Only plain netif_schedule() remains taking a net_device, mostly as a
compatability item while we transition the rest of these interfaces.

Everything else calls netif_schedule_queue() or __netif_schedule(),
both of which take a netdev_queue pointer.

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

6 files changed, 27 insertions, 19 deletions

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index aae6c6d153f2..28aa8e77cee9 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -952,12 +952,19 @@ DECLARE_PER_CPU(struct softnet_data,softnet_data);
 
 #define HAVE_NETIF_QUEUE
 
-extern void __netif_schedule(struct net_device *dev);
+extern void __netif_schedule(struct netdev_queue *txq);
 
-static inline void netif_schedule(struct net_device *dev)
+static inline void netif_schedule_queue(struct netdev_queue *txq)
 {
+        struct net_device *dev = txq->dev;
+
         if (!test_bit(__LINK_STATE_XOFF, &dev->state))
-                __netif_schedule(dev);
+                __netif_schedule(txq);
+}
+
+static inline void netif_schedule(struct net_device *dev)
+{
+        netif_schedule_queue(&dev->tx_queue);
 }
 
 /**
@@ -987,7 +994,7 @@ static inline void netif_wake_queue(struct net_device *dev)
         }
 #endif
         if (test_and_clear_bit(__LINK_STATE_XOFF, &dev->state))
-                __netif_schedule(dev);
+                __netif_schedule(&dev->tx_queue);
 }
 
 /**
@@ -1103,7 +1110,7 @@ static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index)
 #endif
         if (test_and_clear_bit(__LINK_STATE_XOFF,
                                &dev->egress_subqueue[queue_index].state))
-                __netif_schedule(dev);
+                __netif_schedule(&dev->tx_queue);
 #endif
 }
 
diff --git a/net/core/dev.c b/net/core/dev.c
index d6b8d3c3e6ec..0dc888ad4217 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1320,12 +1320,13 @@ static void dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev)
 }
 
 
-void __netif_schedule(struct net_device *dev)
+void __netif_schedule(struct netdev_queue *txq)
 {
+        struct net_device *dev = txq->dev;
+
         if (!test_and_set_bit(__LINK_STATE_SCHED, &dev->state)) {
-                struct netdev_queue *txq = &dev->tx_queue;
-                unsigned long flags;
                 struct softnet_data *sd;
+                unsigned long flags;
 
                 local_irq_save(flags);
                 sd = &__get_cpu_var(softnet_data);
@@ -1932,7 +1933,7 @@ static void net_tx_action(struct softirq_action *h)
                                 qdisc_run(dev);
                                 spin_unlock(&txq->lock);
                         } else {
-                                netif_schedule(dev);
+                                netif_schedule_queue(txq);
                         }
                 }
         }
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 2968baa66b91..1c4d3ba6b878 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -885,10 +885,10 @@ void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid)
         spin_unlock_bh(&txq->lock);
 
         /* we just requeued the all the frames that were in the removed
-         * queue, and since we might miss a softirq we do netif_schedule.
+         * queue, and since we might miss a softirq we do netif_schedule_queue.
          * ieee80211_wake_queue is not used here as this queue is not
          * necessarily stopped */
-        netif_schedule(local->mdev);
+        netif_schedule_queue(txq);
         spin_lock_bh(&sta->lock);
         *state = HT_AGG_STATE_IDLE;
         sta->ampdu_mlme.addba_req_num[tid] = 0;
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index e73bd68aa7ae..95873f8dd37c 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -282,11 +282,11 @@ static enum hrtimer_restart qdisc_watchdog(struct hrtimer *timer)
 {
         struct qdisc_watchdog *wd = container_of(timer, struct qdisc_watchdog,
                                                  timer);
-        struct net_device *dev = qdisc_dev(wd->qdisc);
+        struct netdev_queue *txq = wd->qdisc->dev_queue;
 
         wd->qdisc->flags &= ~TCQ_F_THROTTLED;
         smp_wmb();
-        netif_schedule(dev);
+        netif_schedule_queue(txq);
 
         return HRTIMER_NORESTART;
 }
diff --git a/net/sched/sch_cbq.c b/net/sched/sch_cbq.c
index 99ce3da2b0a4..4efc836cbf38 100644
--- a/net/sched/sch_cbq.c
+++ b/net/sched/sch_cbq.c
@@ -650,7 +650,7 @@ static enum hrtimer_restart cbq_undelay(struct hrtimer *timer)
         }
 
         sch->flags &= ~TCQ_F_THROTTLED;
-        netif_schedule(qdisc_dev(sch));
+        netif_schedule_queue(sch->dev_queue);
         return HRTIMER_NORESTART;
 }
 
diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
index 8247a406a401..407dfdb142a4 100644
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -62,7 +62,7 @@ static inline int qdisc_qlen(struct Qdisc *q)
         return q->q.qlen;
 }
 
-static inline int dev_requeue_skb(struct sk_buff *skb, struct net_device *dev,
+static inline int dev_requeue_skb(struct sk_buff *skb,
                                   struct netdev_queue *dev_queue,
                                   struct Qdisc *q)
 {
@@ -71,7 +71,7 @@ static inline int dev_requeue_skb(struct sk_buff *skb, struct net_device *dev,
         else
                 q->ops->requeue(skb, q);
 
-        netif_schedule(dev);
+        netif_schedule_queue(dev_queue);
         return 0;
 }
 
@@ -114,7 +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, dev_queue, q);
+                ret = dev_requeue_skb(skb, dev_queue, q);
         }
 
         return ret;
@@ -179,7 +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, txq, q);
+                ret = dev_requeue_skb(skb, txq, q);
                 break;
         }
 
@@ -200,7 +200,7 @@ void __qdisc_run(struct net_device *dev)
                  * 2. we've been doing it for too long.
                  */
                 if (need_resched() || jiffies != start_time) {
-                        netif_schedule(dev);
+                        netif_schedule_queue(&dev->tx_queue);
                         break;
                 }
         }