[NET] move netif_* helpers from tg3 driver to linux/netdevice.h

Helpers moved:
netif_poll_{enable,disable}, __netif_rx_complete, netif_tx_disable

Use the helpers in net/core/dev.c.

drivers/net/tg3.c

@@ -237,38 +237,6 @@ static void tg3_enable_ints(struct tg3 *tp)
 	tg3_cond_int(tp);
 }
 
-/* these netif_xxx funcs should be moved into generic net layer */
-static void netif_poll_disable(struct net_device *dev)
-{
-	while (test_and_set_bit(__LINK_STATE_RX_SCHED, &dev->state)) {
-		current->state = TASK_INTERRUPTIBLE;
-		schedule_timeout(1);
-	}
-}
-
-static inline void netif_poll_enable(struct net_device *dev)
-{
-	clear_bit(__LINK_STATE_RX_SCHED, &dev->state);
-}
-
-/* same as netif_rx_complete, except that local_irq_save(flags)
- * has already been issued
- */
-static inline void __netif_rx_complete(struct net_device *dev)
-{
-	if (!test_bit(__LINK_STATE_RX_SCHED, &dev->state)) BUG();
-	list_del(&dev->poll_list);
-	smp_mb__before_clear_bit();
-	clear_bit(__LINK_STATE_RX_SCHED, &dev->state);
-}
-
-static inline void netif_tx_disable(struct net_device *dev)
-{
-	spin_lock_bh(&dev->xmit_lock);
-	netif_stop_queue(dev);
-	spin_unlock_bh(&dev->xmit_lock);
-}
-
 static inline void tg3_netif_stop(struct tg3 *tp)
 {
 	netif_poll_disable(tp->dev);

include/linux/netdevice.h

@@ -832,6 +832,38 @@ static inline void netif_rx_complete(struct net_device *dev)
 	local_irq_restore(flags);
 }
 
+static inline void netif_poll_disable(struct net_device *dev)
+{
+	while (test_and_set_bit(__LINK_STATE_RX_SCHED, &dev->state)) {
+		/* No hurry. */
+		current->state = TASK_INTERRUPTIBLE;
+		schedule_timeout(1);
+	}
+}
+
+static inline void netif_poll_enable(struct net_device *dev)
+{
+	clear_bit(__LINK_STATE_RX_SCHED, &dev->state);
+}
+
+/* same as netif_rx_complete, except that local_irq_save(flags)
+ * has already been issued
+ */
+static inline void __netif_rx_complete(struct net_device *dev)
+{
+	if (!test_bit(__LINK_STATE_RX_SCHED, &dev->state)) BUG();
+	list_del(&dev->poll_list);
+	smp_mb__before_clear_bit();
+	clear_bit(__LINK_STATE_RX_SCHED, &dev->state);
+}
+
+static inline void netif_tx_disable(struct net_device *dev)
+{
+	spin_lock_bh(&dev->xmit_lock);
+	netif_stop_queue(dev);
+	spin_unlock_bh(&dev->xmit_lock);
+}
+
 /* These functions live elsewhere (drivers/net/net_init.c, but related) */
 
 extern void		ether_setup(struct net_device *dev);

net/core/dev.c

@@ -845,11 +845,7 @@ int dev_close(struct net_device *dev)
 	 * engine, but this requires more changes in devices. */
 
 	smp_mb__after_clear_bit(); /* Commit netif_running(). */
-	while (test_bit(__LINK_STATE_RX_SCHED, &dev->state)) {
-		/* No hurry. */
-		current->state = TASK_INTERRUPTIBLE;
-		schedule_timeout(1);
-	}
+	netif_poll_disable(dev);
 
 	/*
 	 *	Call the device specific close. This cannot fail.
@@ -1657,7 +1653,7 @@ static int process_backlog(struct net_device *backlog_dev, int *budget)
 
 	list_del(&backlog_dev->poll_list);
 	smp_mb__before_clear_bit();
-	clear_bit(__LINK_STATE_RX_SCHED, &backlog_dev->state);
+	netif_poll_enable(backlog_dev);
 
 	if (queue->throttle) {
 		queue->throttle = 0;