diff --git a/Documentation/networking/netdevices.txt b/Documentation/networking/netdevices.txt
index 3c0a5ba614d7c39146668f0b990e3fab03cceb06..847cedb238f6c0ed24ad6568b1d440bc3843fc6f 100644
--- a/Documentation/networking/netdevices.txt
+++ b/Documentation/networking/netdevices.txt
@@ -42,9 +42,9 @@ dev->get_stats:
 	Context: nominally process, but don't sleep inside an rwlock
 
 dev->hard_start_xmit:
-	Synchronization: dev->xmit_lock spinlock.
+	Synchronization: netif_tx_lock spinlock.
 	When the driver sets NETIF_F_LLTX in dev->features this will be
-	called without holding xmit_lock. In this case the driver 
+	called without holding netif_tx_lock. In this case the driver
 	has to lock by itself when needed. It is recommended to use a try lock
 	for this and return -1 when the spin lock fails. 
 	The locking there should also properly protect against 
@@ -62,12 +62,12 @@ dev->hard_start_xmit:
 	  Only valid when NETIF_F_LLTX is set.
 
 dev->tx_timeout:
-	Synchronization: dev->xmit_lock spinlock.
+	Synchronization: netif_tx_lock spinlock.
 	Context: BHs disabled
 	Notes: netif_queue_stopped() is guaranteed true
 
 dev->set_multicast_list:
-	Synchronization: dev->xmit_lock spinlock.
+	Synchronization: netif_tx_lock spinlock.
 	Context: BHs disabled
 
 dev->poll:
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
index 1dae4b238252d3b204d68570bc4fa73f9e73959c..1d917edcf9ba99ea3e2de4e33700ba4e05893c53 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
@@ -821,7 +821,8 @@ void ipoib_mcast_restart_task(void *dev_ptr)
 
 	ipoib_mcast_stop_thread(dev, 0);
 
-	spin_lock_irqsave(&dev->xmit_lock, flags);
+	local_irq_save(flags);
+	netif_tx_lock(dev);
 	spin_lock(&priv->lock);
 
 	/*
@@ -896,7 +897,8 @@ void ipoib_mcast_restart_task(void *dev_ptr)
 	}
 
 	spin_unlock(&priv->lock);
-	spin_unlock_irqrestore(&dev->xmit_lock, flags);
+	netif_tx_unlock(dev);
+	local_irq_restore(flags);
 
 	/* We have to cancel outside of the spinlock */
 	list_for_each_entry_safe(mcast, tmcast, &remove_list, list) {
diff --git a/drivers/media/dvb/dvb-core/dvb_net.c b/drivers/media/dvb/dvb-core/dvb_net.c
index 2f0f35811bf7710c2a95e63bbeaa37c2900be0af..9fd87521a1639bd3dae51dcdce48545614d41a85 100644
--- a/drivers/media/dvb/dvb-core/dvb_net.c
+++ b/drivers/media/dvb/dvb-core/dvb_net.c
@@ -1052,7 +1052,7 @@ static void wq_set_multicast_list (void *data)
 
 	dvb_net_feed_stop(dev);
 	priv->rx_mode = RX_MODE_UNI;
-	spin_lock_bh(&dev->xmit_lock);
+	netif_tx_lock_bh(dev);
 
 	if (dev->flags & IFF_PROMISC) {
 		dprintk("%s: promiscuous mode\n", dev->name);
@@ -1077,7 +1077,7 @@ static void wq_set_multicast_list (void *data)
 		}
 	}
 
-	spin_unlock_bh(&dev->xmit_lock);
+	netif_tx_unlock_bh(dev);
 	dvb_net_feed_start(dev);
 }
 
diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index 54161aef3cac0cd763479a3a5bc9d7b00da1f83b..9c5a8842ed0f6377d877f68980b8027afbf98779 100644
--- a/drivers/net/bnx2.c
+++ b/drivers/net/bnx2.c
@@ -2009,7 +2009,7 @@ bnx2_poll(struct net_device *dev, int *budget)
 	return 1;
 }
 
-/* Called with rtnl_lock from vlan functions and also dev->xmit_lock
+/* Called with rtnl_lock from vlan functions and also netif_tx_lock
  * from set_multicast.
  */
 static void
@@ -4252,7 +4252,7 @@ bnx2_vlan_rx_kill_vid(struct net_device *dev, uint16_t vid)
 }
 #endif
 
-/* Called with dev->xmit_lock.
+/* Called with netif_tx_lock.
  * hard_start_xmit is pseudo-lockless - a lock is only required when
  * the tx queue is full. This way, we get the benefit of lockless
  * operations most of the time without the complexities to handle
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 55d236726d118382d0237db9d503305de3d7eba0..46326cdfb2776616bec130476ad60ee03620a527 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -4191,7 +4191,7 @@ static int bond_init(struct net_device *bond_dev, struct bond_params *params)
 	 */
 	bond_dev->features |= NETIF_F_VLAN_CHALLENGED;
 
-	/* don't acquire bond device's xmit_lock when 
+	/* don't acquire bond device's netif_tx_lock when
 	 * transmitting */
 	bond_dev->features |= NETIF_F_LLTX;
 
diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c
index feb5b223cd60ed09e0dca642701d1d16f388fd49..5a8651b4b01dd297e7d42a4c5dc4f69bc67985c9 100644
--- a/drivers/net/forcedeth.c
+++ b/drivers/net/forcedeth.c
@@ -533,9 +533,9 @@ typedef union _ring_type {
  * critical parts:
  * - rx is (pseudo-) lockless: it relies on the single-threading provided
  *	by the arch code for interrupts.
- * - tx setup is lockless: it relies on dev->xmit_lock. Actual submission
+ * - tx setup is lockless: it relies on netif_tx_lock. Actual submission
  *	needs dev->priv->lock :-(
- * - set_multicast_list: preparation lockless, relies on dev->xmit_lock.
+ * - set_multicast_list: preparation lockless, relies on netif_tx_lock.
  */
 
 /* in dev: base, irq */
@@ -1213,7 +1213,7 @@ static void drain_ring(struct net_device *dev)
 
 /*
  * nv_start_xmit: dev->hard_start_xmit function
- * Called with dev->xmit_lock held.
+ * Called with netif_tx_lock held.
  */
 static int nv_start_xmit(struct sk_buff *skb, struct net_device *dev)
 {
@@ -1407,7 +1407,7 @@ static void nv_tx_done(struct net_device *dev)
 
 /*
  * nv_tx_timeout: dev->tx_timeout function
- * Called with dev->xmit_lock held.
+ * Called with netif_tx_lock held.
  */
 static void nv_tx_timeout(struct net_device *dev)
 {
@@ -1737,7 +1737,7 @@ static int nv_change_mtu(struct net_device *dev, int new_mtu)
 		 * Changing the MTU is a rare event, it shouldn't matter.
 		 */
 		nv_disable_irq(dev);
-		spin_lock_bh(&dev->xmit_lock);
+		netif_tx_lock_bh(dev);
 		spin_lock(&np->lock);
 		/* stop engines */
 		nv_stop_rx(dev);
@@ -1768,7 +1768,7 @@ static int nv_change_mtu(struct net_device *dev, int new_mtu)
 		nv_start_rx(dev);
 		nv_start_tx(dev);
 		spin_unlock(&np->lock);
-		spin_unlock_bh(&dev->xmit_lock);
+		netif_tx_unlock_bh(dev);
 		nv_enable_irq(dev);
 	}
 	return 0;
@@ -1803,7 +1803,7 @@ static int nv_set_mac_address(struct net_device *dev, void *addr)
 	memcpy(dev->dev_addr, macaddr->sa_data, ETH_ALEN);
 
 	if (netif_running(dev)) {
-		spin_lock_bh(&dev->xmit_lock);
+		netif_tx_lock_bh(dev);
 		spin_lock_irq(&np->lock);
 
 		/* stop rx engine */
@@ -1815,7 +1815,7 @@ static int nv_set_mac_address(struct net_device *dev, void *addr)
 		/* restart rx engine */
 		nv_start_rx(dev);
 		spin_unlock_irq(&np->lock);
-		spin_unlock_bh(&dev->xmit_lock);
+		netif_tx_unlock_bh(dev);
 	} else {
 		nv_copy_mac_to_hw(dev);
 	}
@@ -1824,7 +1824,7 @@ static int nv_set_mac_address(struct net_device *dev, void *addr)
 
 /*
  * nv_set_multicast: dev->set_multicast function
- * Called with dev->xmit_lock held.
+ * Called with netif_tx_lock held.
  */
 static void nv_set_multicast(struct net_device *dev)
 {
diff --git a/drivers/net/hamradio/6pack.c b/drivers/net/hamradio/6pack.c
index 102c1f0b90dac7a941902322dbc33cfd295c1799..d12605f0ac7c6e0f4b01ed0558d61a47c4037008 100644
--- a/drivers/net/hamradio/6pack.c
+++ b/drivers/net/hamradio/6pack.c
@@ -308,9 +308,9 @@ static int sp_set_mac_address(struct net_device *dev, void *addr)
 {
 	struct sockaddr_ax25 *sa = addr;
 
-	spin_lock_irq(&dev->xmit_lock);
+	netif_tx_lock_bh(dev);
 	memcpy(dev->dev_addr, &sa->sax25_call, AX25_ADDR_LEN);
-	spin_unlock_irq(&dev->xmit_lock);
+	netif_tx_unlock_bh(dev);
 
 	return 0;
 }
@@ -767,9 +767,9 @@ static int sixpack_ioctl(struct tty_struct *tty, struct file *file,
 			break;
 		}
 
-		spin_lock_irq(&dev->xmit_lock);
+		netif_tx_lock_bh(dev);
 		memcpy(dev->dev_addr, &addr, AX25_ADDR_LEN);
-		spin_unlock_irq(&dev->xmit_lock);
+		netif_tx_unlock_bh(dev);
 
 		err = 0;
 		break;
diff --git a/drivers/net/hamradio/mkiss.c b/drivers/net/hamradio/mkiss.c
index d81a8e1eeb8d5f807fce83f5a99ef04fefd755cf..3ebbbe56b6e94be8c9fd7ec3be2b7d3486f7c51d 100644
--- a/drivers/net/hamradio/mkiss.c
+++ b/drivers/net/hamradio/mkiss.c
@@ -357,9 +357,9 @@ static int ax_set_mac_address(struct net_device *dev, void *addr)
 {
 	struct sockaddr_ax25 *sa = addr;
 
-	spin_lock_irq(&dev->xmit_lock);
+	netif_tx_lock_bh(dev);
 	memcpy(dev->dev_addr, &sa->sax25_call, AX25_ADDR_LEN);
-	spin_unlock_irq(&dev->xmit_lock);
+	netif_tx_unlock_bh(dev);
 
 	return 0;
 }
@@ -886,9 +886,9 @@ static int mkiss_ioctl(struct tty_struct *tty, struct file *file,
 			break;
 		}
 
-		spin_lock_irq(&dev->xmit_lock);
+		netif_tx_lock_bh(dev);
 		memcpy(dev->dev_addr, addr, AX25_ADDR_LEN);
-		spin_unlock_irq(&dev->xmit_lock);
+		netif_tx_unlock_bh(dev);
 
 		err = 0;
 		break;
diff --git a/drivers/net/ifb.c b/drivers/net/ifb.c
index 31fb2d75dc447a79bffa71f86d728425b68472a1..2e222ef91e224892c675766831fddc851e40f017 100644
--- a/drivers/net/ifb.c
+++ b/drivers/net/ifb.c
@@ -76,13 +76,13 @@ static void ri_tasklet(unsigned long dev)
 	dp->st_task_enter++;
 	if ((skb = skb_peek(&dp->tq)) == NULL) {
 		dp->st_txq_refl_try++;
-		if (spin_trylock(&_dev->xmit_lock)) {
+		if (netif_tx_trylock(_dev)) {
 			dp->st_rxq_enter++;
 			while ((skb = skb_dequeue(&dp->rq)) != NULL) {
 				skb_queue_tail(&dp->tq, skb);
 				dp->st_rx2tx_tran++;
 			}
-			spin_unlock(&_dev->xmit_lock);
+			netif_tx_unlock(_dev);
 		} else {
 			/* reschedule */
 			dp->st_rxq_notenter++;
@@ -110,7 +110,7 @@ static void ri_tasklet(unsigned long dev)
 		}
 	}
 
-	if (spin_trylock(&_dev->xmit_lock)) {
+	if (netif_tx_trylock(_dev)) {
 		dp->st_rxq_check++;
 		if ((skb = skb_peek(&dp->rq)) == NULL) {
 			dp->tasklet_pending = 0;
@@ -118,10 +118,10 @@ static void ri_tasklet(unsigned long dev)
 				netif_wake_queue(_dev);
 		} else {
 			dp->st_rxq_rsch++;
-			spin_unlock(&_dev->xmit_lock);
+			netif_tx_unlock(_dev);
 			goto resched;
 		}
-		spin_unlock(&_dev->xmit_lock);
+		netif_tx_unlock(_dev);
 	} else {
 resched:
 		dp->tasklet_pending = 1;
diff --git a/drivers/net/irda/vlsi_ir.c b/drivers/net/irda/vlsi_ir.c
index 97a49e0be76bc6197945814639b41e1d39f6caf1..d70b9e8d6e6054208216efb7ff9f88b1e50d7970 100644
--- a/drivers/net/irda/vlsi_ir.c
+++ b/drivers/net/irda/vlsi_ir.c
@@ -959,7 +959,7 @@ static int vlsi_hard_start_xmit(struct sk_buff *skb, struct net_device *ndev)
 			    ||  (now.tv_sec==ready.tv_sec && now.tv_usec>=ready.tv_usec))
 			    	break;
 			udelay(100);
-			/* must not sleep here - we are called under xmit_lock! */
+			/* must not sleep here - called under netif_tx_lock! */
 		}
 	}
 
diff --git a/drivers/net/natsemi.c b/drivers/net/natsemi.c
index 90627756d6fa47bbe93ce363af1d6ced2307fba4..2e4ecedba0572cc655b3827a39c88d0ddebb139b 100644
--- a/drivers/net/natsemi.c
+++ b/drivers/net/natsemi.c
@@ -318,12 +318,12 @@ performance critical codepaths:
 The rx process only runs in the interrupt handler. Access from outside
 the interrupt handler is only permitted after disable_irq().
 
-The rx process usually runs under the dev->xmit_lock. If np->intr_tx_reap
+The rx process usually runs under the netif_tx_lock. If np->intr_tx_reap
 is set, then access is permitted under spin_lock_irq(&np->lock).
 
 Thus configuration functions that want to access everything must call
 	disable_irq(dev->irq);
-	spin_lock_bh(dev->xmit_lock);
+	netif_tx_lock_bh(dev);
 	spin_lock_irq(&np->lock);
 
 IV. Notes
diff --git a/drivers/net/tulip/winbond-840.c b/drivers/net/tulip/winbond-840.c
index 136a70c4d5e4880c442cfd75bf5f6450a621cfb9..56d86c7c03862348d52a5ead0dd7c554168d649b 100644
--- a/drivers/net/tulip/winbond-840.c
+++ b/drivers/net/tulip/winbond-840.c
@@ -1605,11 +1605,11 @@ static void __devexit w840_remove1 (struct pci_dev *pdev)
  * - get_stats:
  * 	spin_lock_irq(np->lock), doesn't touch hw if not present
  * - hard_start_xmit:
- * 	netif_stop_queue + spin_unlock_wait(&dev->xmit_lock);
+ * 	synchronize_irq + netif_tx_disable;
  * - tx_timeout:
- * 	netif_device_detach + spin_unlock_wait(&dev->xmit_lock);
+ * 	netif_device_detach + netif_tx_disable;
  * - set_multicast_list
- * 	netif_device_detach + spin_unlock_wait(&dev->xmit_lock);
+ * 	netif_device_detach + netif_tx_disable;
  * - interrupt handler
  * 	doesn't touch hw if not present, synchronize_irq waits for
  * 	running instances of the interrupt handler.
@@ -1635,11 +1635,10 @@ static int w840_suspend (struct pci_dev *pdev, pm_message_t state)
 		netif_device_detach(dev);
 		update_csr6(dev, 0);
 		iowrite32(0, ioaddr + IntrEnable);
-		netif_stop_queue(dev);
 		spin_unlock_irq(&np->lock);
 
-		spin_unlock_wait(&dev->xmit_lock);
 		synchronize_irq(dev->irq);
+		netif_tx_disable(dev);
 	
 		np->stats.rx_missed_errors += ioread32(ioaddr + RxMissed) & 0xffff;
 
diff --git a/drivers/net/wireless/orinoco.c b/drivers/net/wireless/orinoco.c
index c2d0b09e0418e1955c452248bb65686d8ed0d70e..a5fcfcde63d18c2ebea07136e7f4c074ecb543c6 100644
--- a/drivers/net/wireless/orinoco.c
+++ b/drivers/net/wireless/orinoco.c
@@ -1833,7 +1833,9 @@ static int __orinoco_program_rids(struct net_device *dev)
 	/* Set promiscuity / multicast*/
 	priv->promiscuous = 0;
 	priv->mc_count = 0;
-	__orinoco_set_multicast_list(dev); /* FIXME: what about the xmit_lock */
+
+	/* FIXME: what about netif_tx_lock */
+	__orinoco_set_multicast_list(dev);
 
 	return 0;
 }
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index b5760c67af9ce6aeeecfa940dec2c721bd91a3bb..067b9ccafd87ef1be07e8780e3d2397e7421b41d 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -407,7 +407,7 @@ struct net_device
  * One part is mostly used on xmit path (device)
  */
 	/* hard_start_xmit synchronizer */
-	spinlock_t		xmit_lock ____cacheline_aligned_in_smp;
+	spinlock_t		_xmit_lock ____cacheline_aligned_in_smp;
 	/* cpu id of processor entered to hard_start_xmit or -1,
 	   if nobody entered there.
 	 */
@@ -893,11 +893,43 @@ static inline void __netif_rx_complete(struct net_device *dev)
 	clear_bit(__LINK_STATE_RX_SCHED, &dev->state);
 }
 
+static inline void netif_tx_lock(struct net_device *dev)
+{
+	spin_lock(&dev->_xmit_lock);
+	dev->xmit_lock_owner = smp_processor_id();
+}
+
+static inline void netif_tx_lock_bh(struct net_device *dev)
+{
+	spin_lock_bh(&dev->_xmit_lock);
+	dev->xmit_lock_owner = smp_processor_id();
+}
+
+static inline int netif_tx_trylock(struct net_device *dev)
+{
+	int err = spin_trylock(&dev->_xmit_lock);
+	if (!err)
+		dev->xmit_lock_owner = smp_processor_id();
+	return err;
+}
+
+static inline void netif_tx_unlock(struct net_device *dev)
+{
+	dev->xmit_lock_owner = -1;
+	spin_unlock(&dev->_xmit_lock);
+}
+
+static inline void netif_tx_unlock_bh(struct net_device *dev)
+{
+	dev->xmit_lock_owner = -1;
+	spin_unlock_bh(&dev->_xmit_lock);
+}
+
 static inline void netif_tx_disable(struct net_device *dev)
 {
-	spin_lock_bh(&dev->xmit_lock);
+	netif_tx_lock_bh(dev);
 	netif_stop_queue(dev);
-	spin_unlock_bh(&dev->xmit_lock);
+	netif_tx_unlock_bh(dev);
 }
 
 /* These functions live elsewhere (drivers/net/net_init.c, but related) */
diff --git a/net/atm/clip.c b/net/atm/clip.c
index 72d8529826646e35018514046c3afac4197885a8..f92f9c94d2c762c51ffe76031c7598e85759a574 100644
--- a/net/atm/clip.c
+++ b/net/atm/clip.c
@@ -98,7 +98,7 @@ static void unlink_clip_vcc(struct clip_vcc *clip_vcc)
 		printk(KERN_CRIT "!clip_vcc->entry (clip_vcc %p)\n", clip_vcc);
 		return;
 	}
-	spin_lock_bh(&entry->neigh->dev->xmit_lock);	/* block clip_start_xmit() */
+	netif_tx_lock_bh(entry->neigh->dev);	/* block clip_start_xmit() */
 	entry->neigh->used = jiffies;
 	for (walk = &entry->vccs; *walk; walk = &(*walk)->next)
 		if (*walk == clip_vcc) {
@@ -122,7 +122,7 @@ static void unlink_clip_vcc(struct clip_vcc *clip_vcc)
 	printk(KERN_CRIT "ATMARP: unlink_clip_vcc failed (entry %p, vcc "
 	       "0x%p)\n", entry, clip_vcc);
       out:
-	spin_unlock_bh(&entry->neigh->dev->xmit_lock);
+	netif_tx_unlock_bh(entry->neigh->dev);
 }
 
 /* The neighbour entry n->lock is held. */
diff --git a/net/core/dev.c b/net/core/dev.c
index 6bfa78c66c2546722dc2a7d309715fbbd1dbe80f..1b09f1cae46ea069e6f709895f33a5a28eb79c4a 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1282,15 +1282,13 @@ int __skb_linearize(struct sk_buff *skb, gfp_t gfp_mask)
 
 #define HARD_TX_LOCK(dev, cpu) {			\
 	if ((dev->features & NETIF_F_LLTX) == 0) {	\
-		spin_lock(&dev->xmit_lock);		\
-		dev->xmit_lock_owner = cpu;		\
+		netif_tx_lock(dev);			\
 	}						\
 }
 
 #define HARD_TX_UNLOCK(dev) {				\
 	if ((dev->features & NETIF_F_LLTX) == 0) {	\
-		dev->xmit_lock_owner = -1;		\
-		spin_unlock(&dev->xmit_lock);		\
+		netif_tx_unlock(dev);			\
 	}						\
 }
 
@@ -1389,8 +1387,8 @@ int dev_queue_xmit(struct sk_buff *skb)
 	/* The device has no queue. Common case for software devices:
 	   loopback, all the sorts of tunnels...
 
-	   Really, it is unlikely that xmit_lock protection is necessary here.
-	   (f.e. loopback and IP tunnels are clean ignoring statistics
+	   Really, it is unlikely that netif_tx_lock protection is necessary
+	   here.  (f.e. loopback and IP tunnels are clean ignoring statistics
 	   counters.)
 	   However, it is possible, that they rely on protection
 	   made by us here.
@@ -2805,7 +2803,7 @@ int register_netdevice(struct net_device *dev)
 	BUG_ON(dev->reg_state != NETREG_UNINITIALIZED);
 
 	spin_lock_init(&dev->queue_lock);
-	spin_lock_init(&dev->xmit_lock);
+	spin_lock_init(&dev->_xmit_lock);
 	dev->xmit_lock_owner = -1;
 #ifdef CONFIG_NET_CLS_ACT
 	spin_lock_init(&dev->ingress_lock);
diff --git a/net/core/dev_mcast.c b/net/core/dev_mcast.c
index 05d60850840e07a0d0beba51baf2b53fb622a883..c57d887da2ef20733e3d7f9c49e0d6b0aa405458 100644
--- a/net/core/dev_mcast.c
+++ b/net/core/dev_mcast.c
@@ -62,7 +62,7 @@
  *	Device mc lists are changed by bh at least if IPv6 is enabled,
  *	so that it must be bh protected.
  *
- *	We block accesses to device mc filters with dev->xmit_lock.
+ *	We block accesses to device mc filters with netif_tx_lock.
  */
 
 /*
@@ -93,9 +93,9 @@ static void __dev_mc_upload(struct net_device *dev)
 
 void dev_mc_upload(struct net_device *dev)
 {
-	spin_lock_bh(&dev->xmit_lock);
+	netif_tx_lock_bh(dev);
 	__dev_mc_upload(dev);
-	spin_unlock_bh(&dev->xmit_lock);
+	netif_tx_unlock_bh(dev);
 }
 
 /*
@@ -107,7 +107,7 @@ int dev_mc_delete(struct net_device *dev, void *addr, int alen, int glbl)
 	int err = 0;
 	struct dev_mc_list *dmi, **dmip;
 
-	spin_lock_bh(&dev->xmit_lock);
+	netif_tx_lock_bh(dev);
 
 	for (dmip = &dev->mc_list; (dmi = *dmip) != NULL; dmip = &dmi->next) {
 		/*
@@ -139,13 +139,13 @@ int dev_mc_delete(struct net_device *dev, void *addr, int alen, int glbl)
 			 */
 			__dev_mc_upload(dev);
 			
-			spin_unlock_bh(&dev->xmit_lock);
+			netif_tx_unlock_bh(dev);
 			return 0;
 		}
 	}
 	err = -ENOENT;
 done:
-	spin_unlock_bh(&dev->xmit_lock);
+	netif_tx_unlock_bh(dev);
 	return err;
 }
 
@@ -160,7 +160,7 @@ int dev_mc_add(struct net_device *dev, void *addr, int alen, int glbl)
 
 	dmi1 = kmalloc(sizeof(*dmi), GFP_ATOMIC);
 
-	spin_lock_bh(&dev->xmit_lock);
+	netif_tx_lock_bh(dev);
 	for (dmi = dev->mc_list; dmi != NULL; dmi = dmi->next) {
 		if (memcmp(dmi->dmi_addr, addr, dmi->dmi_addrlen) == 0 &&
 		    dmi->dmi_addrlen == alen) {
@@ -176,7 +176,7 @@ int dev_mc_add(struct net_device *dev, void *addr, int alen, int glbl)
 	}
 
 	if ((dmi = dmi1) == NULL) {
-		spin_unlock_bh(&dev->xmit_lock);
+		netif_tx_unlock_bh(dev);
 		return -ENOMEM;
 	}
 	memcpy(dmi->dmi_addr, addr, alen);
@@ -189,11 +189,11 @@ int dev_mc_add(struct net_device *dev, void *addr, int alen, int glbl)
 
 	__dev_mc_upload(dev);
 	
-	spin_unlock_bh(&dev->xmit_lock);
+	netif_tx_unlock_bh(dev);
 	return 0;
 
 done:
-	spin_unlock_bh(&dev->xmit_lock);
+	netif_tx_unlock_bh(dev);
 	kfree(dmi1);
 	return err;
 }
@@ -204,7 +204,7 @@ int dev_mc_add(struct net_device *dev, void *addr, int alen, int glbl)
 
 void dev_mc_discard(struct net_device *dev)
 {
-	spin_lock_bh(&dev->xmit_lock);
+	netif_tx_lock_bh(dev);
 	
 	while (dev->mc_list != NULL) {
 		struct dev_mc_list *tmp = dev->mc_list;
@@ -215,7 +215,7 @@ void dev_mc_discard(struct net_device *dev)
 	}
 	dev->mc_count = 0;
 
-	spin_unlock_bh(&dev->xmit_lock);
+	netif_tx_unlock_bh(dev);
 }
 
 #ifdef CONFIG_PROC_FS
@@ -250,7 +250,7 @@ static int dev_mc_seq_show(struct seq_file *seq, void *v)
 	struct dev_mc_list *m;
 	struct net_device *dev = v;
 
-	spin_lock_bh(&dev->xmit_lock);
+	netif_tx_lock_bh(dev);
 	for (m = dev->mc_list; m; m = m->next) {
 		int i;
 
@@ -262,7 +262,7 @@ static int dev_mc_seq_show(struct seq_file *seq, void *v)
 
 		seq_putc(seq, '\n');
 	}
-	spin_unlock_bh(&dev->xmit_lock);
+	netif_tx_unlock_bh(dev);
 	return 0;
 }
 
diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index e8e05cebd95adaeee351c84144d6c51250b503e9..9cb781830380242cc16b9204cfdb103381dc4234 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -273,24 +273,21 @@ static void netpoll_send_skb(struct netpoll *np, struct sk_buff *skb)
 
 	do {
 		npinfo->tries--;
-		spin_lock(&np->dev->xmit_lock);
-		np->dev->xmit_lock_owner = smp_processor_id();
+		netif_tx_lock(np->dev);
 
 		/*
 		 * network drivers do not expect to be called if the queue is
 		 * stopped.
 		 */
 		if (netif_queue_stopped(np->dev)) {
-			np->dev->xmit_lock_owner = -1;
-			spin_unlock(&np->dev->xmit_lock);
+			netif_tx_unlock(np->dev);
 			netpoll_poll(np);
 			udelay(50);
 			continue;
 		}
 
 		status = np->dev->hard_start_xmit(skb, np->dev);
-		np->dev->xmit_lock_owner = -1;
-		spin_unlock(&np->dev->xmit_lock);
+		netif_tx_unlock(np->dev);
 
 		/* success */
 		if(!status) {
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index c23e9c06ee237203e792f421aabf6a3005996009..67ed14ddabd2b83a32bef68b002c67298bcc2f42 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -2897,7 +2897,7 @@ static __inline__ void pktgen_xmit(struct pktgen_dev *pkt_dev)
 		}
 	}
 
-	spin_lock_bh(&odev->xmit_lock);
+	netif_tx_lock_bh(odev);
 	if (!netif_queue_stopped(odev)) {
 
 		atomic_inc(&(pkt_dev->skb->users));
@@ -2942,7 +2942,7 @@ static __inline__ void pktgen_xmit(struct pktgen_dev *pkt_dev)
 		pkt_dev->next_tx_ns = 0;
 	}
 
-	spin_unlock_bh(&odev->xmit_lock);
+	netif_tx_unlock_bh(odev);
 
 	/* If pkt_dev->count is zero, then run forever */
 	if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) {
diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
index 138ea92ed268457b99d9c6b44a1a9580cc7c016a..b1e4c5e20ac709c971fd68c8a4b8c573d4c94468 100644
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -72,9 +72,9 @@ void qdisc_unlock_tree(struct net_device *dev)
    dev->queue_lock serializes queue accesses for this device
    AND dev->qdisc pointer itself.
 
-   dev->xmit_lock serializes accesses to device driver.
+   netif_tx_lock serializes accesses to device driver.
 
-   dev->queue_lock and dev->xmit_lock are mutually exclusive,
+   dev->queue_lock and netif_tx_lock are mutually exclusive,
    if one is grabbed, another must be free.
  */
 
@@ -108,7 +108,7 @@ int qdisc_restart(struct net_device *dev)
 		 * will be requeued.
 		 */
 		if (!nolock) {
-			if (!spin_trylock(&dev->xmit_lock)) {
+			if (!netif_tx_trylock(dev)) {
 			collision:
 				/* So, someone grabbed the driver. */
 				
@@ -126,8 +126,6 @@ int qdisc_restart(struct net_device *dev)
 				__get_cpu_var(netdev_rx_stat).cpu_collision++;
 				goto requeue;
 			}
-			/* Remember that the driver is grabbed by us. */
-			dev->xmit_lock_owner = smp_processor_id();
 		}
 		
 		{
@@ -142,8 +140,7 @@ int qdisc_restart(struct net_device *dev)
 				ret = dev->hard_start_xmit(skb, dev);
 				if (ret == NETDEV_TX_OK) { 
 					if (!nolock) {
-						dev->xmit_lock_owner = -1;
-						spin_unlock(&dev->xmit_lock);
+						netif_tx_unlock(dev);
 					}
 					spin_lock(&dev->queue_lock);
 					return -1;
@@ -157,8 +154,7 @@ int qdisc_restart(struct net_device *dev)
 			/* NETDEV_TX_BUSY - we need to requeue */
 			/* Release the driver */
 			if (!nolock) { 
-				dev->xmit_lock_owner = -1;
-				spin_unlock(&dev->xmit_lock);
+				netif_tx_unlock(dev);
 			} 
 			spin_lock(&dev->queue_lock);
 			q = dev->qdisc;
@@ -187,7 +183,7 @@ static void dev_watchdog(unsigned long arg)
 {
 	struct net_device *dev = (struct net_device *)arg;
 
-	spin_lock(&dev->xmit_lock);
+	netif_tx_lock(dev);
 	if (dev->qdisc != &noop_qdisc) {
 		if (netif_device_present(dev) &&
 		    netif_running(dev) &&
@@ -203,7 +199,7 @@ static void dev_watchdog(unsigned long arg)
 				dev_hold(dev);
 		}
 	}
-	spin_unlock(&dev->xmit_lock);
+	netif_tx_unlock(dev);
 
 	dev_put(dev);
 }
@@ -227,17 +223,17 @@ void __netdev_watchdog_up(struct net_device *dev)
 
 static void dev_watchdog_up(struct net_device *dev)
 {
-	spin_lock_bh(&dev->xmit_lock);
+	netif_tx_lock_bh(dev);
 	__netdev_watchdog_up(dev);
-	spin_unlock_bh(&dev->xmit_lock);
+	netif_tx_unlock_bh(dev);
 }
 
 static void dev_watchdog_down(struct net_device *dev)
 {
-	spin_lock_bh(&dev->xmit_lock);
+	netif_tx_lock_bh(dev);
 	if (del_timer(&dev->watchdog_timer))
 		dev_put(dev);
-	spin_unlock_bh(&dev->xmit_lock);
+	netif_tx_unlock_bh(dev);
 }
 
 void netif_carrier_on(struct net_device *dev)
@@ -582,7 +578,7 @@ void dev_deactivate(struct net_device *dev)
 	while (test_bit(__LINK_STATE_SCHED, &dev->state))
 		yield();
 
-	spin_unlock_wait(&dev->xmit_lock);
+	spin_unlock_wait(&dev->_xmit_lock);
 }
 
 void dev_init_scheduler(struct net_device *dev)
diff --git a/net/sched/sch_teql.c b/net/sched/sch_teql.c
index 79b8ef34c6e4c9b14d5d877ba64f0a496701e316..4c16ad57a3e49141335a2812b4c7bc3e976e9b46 100644
--- a/net/sched/sch_teql.c
+++ b/net/sched/sch_teql.c
@@ -302,20 +302,17 @@ static int teql_master_xmit(struct sk_buff *skb, struct net_device *dev)
 
 		switch (teql_resolve(skb, skb_res, slave)) {
 		case 0:
-			if (spin_trylock(&slave->xmit_lock)) {
-				slave->xmit_lock_owner = smp_processor_id();
+			if (netif_tx_trylock(slave)) {
 				if (!netif_queue_stopped(slave) &&
 				    slave->hard_start_xmit(skb, slave) == 0) {
-					slave->xmit_lock_owner = -1;
-					spin_unlock(&slave->xmit_lock);
+					netif_tx_unlock(slave);
 					master->slaves = NEXT_SLAVE(q);
 					netif_wake_queue(dev);
 					master->stats.tx_packets++;
 					master->stats.tx_bytes += len;
 					return 0;
 				}
-				slave->xmit_lock_owner = -1;
-				spin_unlock(&slave->xmit_lock);
+				netif_tx_unlock(slave);
 			}
 			if (netif_queue_stopped(dev))
 				busy = 1;