Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (32 commits)
  tg3: Remove 5719 jumbo frames and TSO blocks
  tg3: Break larger frags into 4k chunks for 5719
  tg3: Add tx BD budgeting code
  tg3: Consolidate code that calls tg3_tx_set_bd()
  tg3: Add partial fragment unmapping code
  tg3: Generalize tg3_skb_error_unmap()
  tg3: Remove short DMA check for 1st fragment
  tg3: Simplify tx bd assignments
  tg3: Reintroduce tg3_tx_ring_info
  ASIX: Use only 11 bits of header for data size
  ASIX: Simplify condition in rx_fixup()
  Fix cdc-phonet build
  bonding: reduce noise during init
  bonding: fix string comparison errors
  net: Audit drivers to identify those needing IFF_TX_SKB_SHARING cleared
  net: add IFF_SKB_TX_SHARED flag to priv_flags
  net: sock_sendmsg_nosec() is static
  forcedeth: fix vlans
  gianfar: fix bug caused by 87c288c6e9aa31720b72e2bc2d665e24e1653c3e
  gro: Only reset frag0 when skb can be pulled
  ...

drivers/isdn/i4l/isdn_net.c

@@ -2532,6 +2532,9 @@ static void _isdn_setup(struct net_device *dev)
 
 	/* Setup the generic properties */
 	dev->flags = IFF_NOARP|IFF_POINTOPOINT;
+
+	/* isdn prepends a header in the tx path, can't share skbs */
+	dev->priv_flags &= ~IFF_TX_SKB_SHARING;
 	dev->header_ops = NULL;
 	dev->netdev_ops = &isdn_netdev_ops;
 

drivers/net/Makefile

@@ -282,6 +282,7 @@ obj-$(CONFIG_USB_HSO)		+= usb/
 obj-$(CONFIG_USB_USBNET)        += usb/
 obj-$(CONFIG_USB_ZD1201)        += usb/
 obj-$(CONFIG_USB_IPHETH)        += usb/
+obj-$(CONFIG_USB_CDC_PHONET)   += usb/
 
 obj-$(CONFIG_WLAN) += wireless/
 obj-$(CONFIG_NET_TULIP) += tulip/

drivers/net/acenic.c

@@ -1502,13 +1502,13 @@ static int __devinit ace_init(struct net_device *dev)
 	 * firmware to wipe the ring without re-initializing it.
 	 */
 	if (!test_and_set_bit(0, &ap->std_refill_busy))
-		ace_load_std_rx_ring(ap, RX_RING_SIZE);
+		ace_load_std_rx_ring(dev, RX_RING_SIZE);
 	else
 		printk(KERN_ERR "%s: Someone is busy refilling the RX ring\n",
 		       ap->name);
 	if (ap->version >= 2) {
 		if (!test_and_set_bit(0, &ap->mini_refill_busy))
-			ace_load_mini_rx_ring(ap, RX_MINI_SIZE);
+			ace_load_mini_rx_ring(dev, RX_MINI_SIZE);
 		else
 			printk(KERN_ERR "%s: Someone is busy refilling "
 			       "the RX mini ring\n", ap->name);
@@ -1584,9 +1584,10 @@ static void ace_watchdog(struct net_device *data)
 }
 
 
-static void ace_tasklet(unsigned long dev)
+static void ace_tasklet(unsigned long arg)
 {
-	struct ace_private *ap = netdev_priv((struct net_device *)dev);
+	struct net_device *dev = (struct net_device *) arg;
+	struct ace_private *ap = netdev_priv(dev);
 	int cur_size;
 
 	cur_size = atomic_read(&ap->cur_rx_bufs);
@@ -1595,7 +1596,7 @@ static void ace_tasklet(unsigned long dev)
 #ifdef DEBUG
 		printk("refilling buffers (current %i)\n", cur_size);
 #endif
-		ace_load_std_rx_ring(ap, RX_RING_SIZE - cur_size);
+		ace_load_std_rx_ring(dev, RX_RING_SIZE - cur_size);
 	}
 
 	if (ap->version >= 2) {
@@ -1606,7 +1607,7 @@ static void ace_tasklet(unsigned long dev)
 			printk("refilling mini buffers (current %i)\n",
 			       cur_size);
 #endif
-			ace_load_mini_rx_ring(ap, RX_MINI_SIZE - cur_size);
+			ace_load_mini_rx_ring(dev, RX_MINI_SIZE - cur_size);
 		}
 	}
 
@@ -1616,7 +1617,7 @@ static void ace_tasklet(unsigned long dev)
 #ifdef DEBUG
 		printk("refilling jumbo buffers (current %i)\n", cur_size);
 #endif
-		ace_load_jumbo_rx_ring(ap, RX_JUMBO_SIZE - cur_size);
+		ace_load_jumbo_rx_ring(dev, RX_JUMBO_SIZE - cur_size);
 	}
 	ap->tasklet_pending = 0;
 }
@@ -1642,8 +1643,9 @@ static void ace_dump_trace(struct ace_private *ap)
  * done only before the device is enabled, thus no interrupts are
  * generated and by the interrupt handler/tasklet handler.
  */
-static void ace_load_std_rx_ring(struct ace_private *ap, int nr_bufs)
+static void ace_load_std_rx_ring(struct net_device *dev, int nr_bufs)
 {
+	struct ace_private *ap = netdev_priv(dev);
 	struct ace_regs __iomem *regs = ap->regs;
 	short i, idx;
 
@@ -1657,11 +1659,10 @@ static void ace_load_std_rx_ring(struct ace_private *ap, int nr_bufs)
 		struct rx_desc *rd;
 		dma_addr_t mapping;
 
-		skb = dev_alloc_skb(ACE_STD_BUFSIZE + NET_IP_ALIGN);
+		skb = netdev_alloc_skb_ip_align(dev, ACE_STD_BUFSIZE);
 		if (!skb)
 			break;
 
-		skb_reserve(skb, NET_IP_ALIGN);
 		mapping = pci_map_page(ap->pdev, virt_to_page(skb->data),
 				       offset_in_page(skb->data),
 				       ACE_STD_BUFSIZE,
@@ -1705,8 +1706,9 @@ static void ace_load_std_rx_ring(struct ace_private *ap, int nr_bufs)
 }
 
 
-static void ace_load_mini_rx_ring(struct ace_private *ap, int nr_bufs)
+static void ace_load_mini_rx_ring(struct net_device *dev, int nr_bufs)
 {
+	struct ace_private *ap = netdev_priv(dev);
 	struct ace_regs __iomem *regs = ap->regs;
 	short i, idx;
 
@@ -1718,11 +1720,10 @@ static void ace_load_mini_rx_ring(struct ace_private *ap, int nr_bufs)
 		struct rx_desc *rd;
 		dma_addr_t mapping;
 
-		skb = dev_alloc_skb(ACE_MINI_BUFSIZE + NET_IP_ALIGN);
+		skb = netdev_alloc_skb_ip_align(dev, ACE_MINI_BUFSIZE);
 		if (!skb)
 			break;
 
-		skb_reserve(skb, NET_IP_ALIGN);
 		mapping = pci_map_page(ap->pdev, virt_to_page(skb->data),
 				       offset_in_page(skb->data),
 				       ACE_MINI_BUFSIZE,
@@ -1762,8 +1763,9 @@ static void ace_load_mini_rx_ring(struct ace_private *ap, int nr_bufs)
  * Load the jumbo rx ring, this may happen at any time if the MTU
  * is changed to a value > 1500.
  */
-static void ace_load_jumbo_rx_ring(struct ace_private *ap, int nr_bufs)
+static void ace_load_jumbo_rx_ring(struct net_device *dev, int nr_bufs)
 {
+	struct ace_private *ap = netdev_priv(dev);
 	struct ace_regs __iomem *regs = ap->regs;
 	short i, idx;
 
@@ -1774,11 +1776,10 @@ static void ace_load_jumbo_rx_ring(struct ace_private *ap, int nr_bufs)
 		struct rx_desc *rd;
 		dma_addr_t mapping;
 
-		skb = dev_alloc_skb(ACE_JUMBO_BUFSIZE + NET_IP_ALIGN);
+		skb = netdev_alloc_skb_ip_align(dev, ACE_JUMBO_BUFSIZE);
 		if (!skb)
 			break;
 
-		skb_reserve(skb, NET_IP_ALIGN);
 		mapping = pci_map_page(ap->pdev, virt_to_page(skb->data),
 				       offset_in_page(skb->data),
 				       ACE_JUMBO_BUFSIZE,
@@ -2196,7 +2197,7 @@ static irqreturn_t ace_interrupt(int irq, void *dev_id)
 #ifdef DEBUG
 				printk("low on std buffers %i\n", cur_size);
 #endif
-				ace_load_std_rx_ring(ap,
+				ace_load_std_rx_ring(dev,
 						     RX_RING_SIZE - cur_size);
 			} else
 				run_tasklet = 1;
@@ -2212,7 +2213,8 @@ static irqreturn_t ace_interrupt(int irq, void *dev_id)
 					printk("low on mini buffers %i\n",
 					       cur_size);
 #endif
-					ace_load_mini_rx_ring(ap, RX_MINI_SIZE - cur_size);
+					ace_load_mini_rx_ring(dev,
+							      RX_MINI_SIZE - cur_size);
 				} else
 					run_tasklet = 1;
 			}
@@ -2228,7 +2230,8 @@ static irqreturn_t ace_interrupt(int irq, void *dev_id)
 					printk("low on jumbo buffers %i\n",
 					       cur_size);
 #endif
-					ace_load_jumbo_rx_ring(ap, RX_JUMBO_SIZE - cur_size);
+					ace_load_jumbo_rx_ring(dev,
+							       RX_JUMBO_SIZE - cur_size);
 				} else
 					run_tasklet = 1;
 			}
@@ -2267,7 +2270,7 @@ static int ace_open(struct net_device *dev)
 
 	if (ap->jumbo &&
 	    !test_and_set_bit(0, &ap->jumbo_refill_busy))
-		ace_load_jumbo_rx_ring(ap, RX_JUMBO_SIZE);
+		ace_load_jumbo_rx_ring(dev, RX_JUMBO_SIZE);
 
 	if (dev->flags & IFF_PROMISC) {
 		cmd.evt = C_SET_PROMISC_MODE;
@@ -2575,7 +2578,7 @@ static int ace_change_mtu(struct net_device *dev, int new_mtu)
 			       "support\n", dev->name);
 			ap->jumbo = 1;
 			if (!test_and_set_bit(0, &ap->jumbo_refill_busy))
-				ace_load_jumbo_rx_ring(ap, RX_JUMBO_SIZE);
+				ace_load_jumbo_rx_ring(dev, RX_JUMBO_SIZE);
 			ace_set_rxtx_parms(dev, 1);
 		}
 	} else {

drivers/net/acenic.h

@@ -766,9 +766,9 @@ static inline void ace_unmask_irq(struct net_device *dev)
  * Prototypes
  */
 static int ace_init(struct net_device *dev);
-static void ace_load_std_rx_ring(struct ace_private *ap, int nr_bufs);
-static void ace_load_mini_rx_ring(struct ace_private *ap, int nr_bufs);
-static void ace_load_jumbo_rx_ring(struct ace_private *ap, int nr_bufs);
+static void ace_load_std_rx_ring(struct net_device *dev, int nr_bufs);
+static void ace_load_mini_rx_ring(struct net_device *dev, int nr_bufs);
+static void ace_load_jumbo_rx_ring(struct net_device *dev, int nr_bufs);
 static irqreturn_t ace_interrupt(int irq, void *dev_id);
 static int ace_load_firmware(struct net_device *dev);
 static int ace_open(struct net_device *dev);

drivers/net/bonding/bond_main.c

@@ -1557,8 +1557,10 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
 
 			if (slave_dev->type != ARPHRD_ETHER)
 				bond_setup_by_slave(bond_dev, slave_dev);
-			else
+			else {
 				ether_setup(bond_dev);
+				bond_dev->priv_flags &= ~IFF_TX_SKB_SHARING;
+			}
 
 			netdev_bonding_change(bond_dev,
 					      NETDEV_POST_TYPE_CHANGE);
@@ -4330,7 +4332,7 @@ static void bond_setup(struct net_device *bond_dev)
 	bond_dev->tx_queue_len = 0;
 	bond_dev->flags |= IFF_MASTER|IFF_MULTICAST;
 	bond_dev->priv_flags |= IFF_BONDING;
-	bond_dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
+	bond_dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING);
 
 	/* At first, we block adding VLANs. That's the only way to
 	 * prevent problems that occur when adding VLANs over an
@@ -4691,7 +4693,7 @@ static int bond_check_params(struct bond_params *params)
 		/* miimon and arp_interval not set, we need one so things
 		 * work as expected, see bonding.txt for details
 		 */
-		pr_warning("Warning: either miimon or arp_interval and arp_ip_target module parameters must be specified, otherwise bonding will not detect link failures! see bonding.txt for details.\n");
+		pr_debug("Warning: either miimon or arp_interval and arp_ip_target module parameters must be specified, otherwise bonding will not detect link failures! see bonding.txt for details.\n");
 	}
 
 	if (primary && !USES_PRIMARY(bond_mode)) {

drivers/net/bonding/bond_sysfs.c

@@ -1025,6 +1025,7 @@ static ssize_t bonding_store_primary(struct device *d,
 	int i;
 	struct slave *slave;
 	struct bonding *bond = to_bond(d);
+	char ifname[IFNAMSIZ];
 
 	if (!rtnl_trylock())
 		return restart_syscall();
@@ -1035,32 +1036,33 @@ static ssize_t bonding_store_primary(struct device *d,
 	if (!USES_PRIMARY(bond->params.mode)) {
 		pr_info("%s: Unable to set primary slave; %s is in mode %d\n",
 			bond->dev->name, bond->dev->name, bond->params.mode);
-	} else {
-		bond_for_each_slave(bond, slave, i) {
-			if (strnicmp
-			    (slave->dev->name, buf,
-			     strlen(slave->dev->name)) == 0) {
-				pr_info("%s: Setting %s as primary slave.\n",
-					bond->dev->name, slave->dev->name);
-				bond->primary_slave = slave;
-				strcpy(bond->params.primary, slave->dev->name);
-				bond_select_active_slave(bond);
-				goto out;
-			}
-		}
+		goto out;
+	}
 
-		/* if we got here, then we didn't match the name of any slave */
+	sscanf(buf, "%16s", ifname); /* IFNAMSIZ */
 
-		if (strlen(buf) == 0 || buf[0] == '\n') {
-			pr_info("%s: Setting primary slave to None.\n",
-				bond->dev->name);
-			bond->primary_slave = NULL;
-				bond_select_active_slave(bond);
-		} else {
-			pr_info("%s: Unable to set %.*s as primary slave as it is not a slave.\n",
-				bond->dev->name, (int)strlen(buf) - 1, buf);
+	/* check to see if we are clearing primary */
+	if (!strlen(ifname) || buf[0] == '\n') {
+		pr_info("%s: Setting primary slave to None.\n",
+			bond->dev->name);
+		bond->primary_slave = NULL;
+		bond_select_active_slave(bond);
+		goto out;
+	}
+
+	bond_for_each_slave(bond, slave, i) {
+		if (strncmp(slave->dev->name, ifname, IFNAMSIZ) == 0) {
+			pr_info("%s: Setting %s as primary slave.\n",
+				bond->dev->name, slave->dev->name);
+			bond->primary_slave = slave;
+			strcpy(bond->params.primary, slave->dev->name);
+			bond_select_active_slave(bond);
+			goto out;
 		}
 	}
+
+	pr_info("%s: Unable to set %.*s as primary slave.\n",
+		bond->dev->name, (int)strlen(buf) - 1, buf);
 out:
 	write_unlock_bh(&bond->curr_slave_lock);
 	read_unlock(&bond->lock);
@@ -1195,6 +1197,7 @@ static ssize_t bonding_store_active_slave(struct device *d,
 	struct slave *old_active = NULL;
 	struct slave *new_active = NULL;
 	struct bonding *bond = to_bond(d);
+	char ifname[IFNAMSIZ];
 
 	if (!rtnl_trylock())
 		return restart_syscall();
@@ -1203,56 +1206,62 @@ static ssize_t bonding_store_active_slave(struct device *d,
 	read_lock(&bond->lock);
 	write_lock_bh(&bond->curr_slave_lock);
 
-	if (!USES_PRIMARY(bond->params.mode))
+	if (!USES_PRIMARY(bond->params.mode)) {
 		pr_info("%s: Unable to change active slave; %s is in mode %d\n",
 			bond->dev->name, bond->dev->name, bond->params.mode);
-	else {
-		bond_for_each_slave(bond, slave, i) {
-			if (strnicmp
-			    (slave->dev->name, buf,
-			     strlen(slave->dev->name)) == 0) {
-        			old_active = bond->curr_active_slave;
-        			new_active = slave;
-        			if (new_active == old_active) {
-					/* do nothing */
-					pr_info("%s: %s is already the current active slave.\n",
+		goto out;
+	}
+
+	sscanf(buf, "%16s", ifname); /* IFNAMSIZ */
+
+	/* check to see if we are clearing active */
+	if (!strlen(ifname) || buf[0] == '\n') {
+		pr_info("%s: Clearing current active slave.\n",
+			bond->dev->name);
+		bond->curr_active_slave = NULL;
+		bond_select_active_slave(bond);
+		goto out;
+	}
+
+	bond_for_each_slave(bond, slave, i) {
+		if (strncmp(slave->dev->name, ifname, IFNAMSIZ) == 0) {
+			old_active = bond->curr_active_slave;
+			new_active = slave;
+			if (new_active == old_active) {
+				/* do nothing */
+				pr_info("%s: %s is already the current"
+					" active slave.\n",
+					bond->dev->name,
+					slave->dev->name);
+				goto out;
+			}
+			else {
+				if ((new_active) &&
+				    (old_active) &&
+				    (new_active->link == BOND_LINK_UP) &&
+				    IS_UP(new_active->dev)) {
+					pr_info("%s: Setting %s as active"
+						" slave.\n",
 						bond->dev->name,
 						slave->dev->name);
-					goto out;
+					bond_change_active_slave(bond,
+								 new_active);
 				}
 				else {
-        				if ((new_active) &&
-            				    (old_active) &&
-				            (new_active->link == BOND_LINK_UP) &&
-				            IS_UP(new_active->dev)) {
-						pr_info("%s: Setting %s as active slave.\n",
-							bond->dev->name,
-							slave->dev->name);
-							bond_change_active_slave(bond, new_active);
-        				}
-					else {
-						pr_info("%s: Could not set %s as active slave; either %s is down or the link is down.\n",
-							bond->dev->name,
-							slave->dev->name,
-							slave->dev->name);
-					}
-					goto out;
+					pr_info("%s: Could not set %s as"
+						" active slave; either %s is"
+						" down or the link is down.\n",
+						bond->dev->name,
+						slave->dev->name,
+						slave->dev->name);
 				}
+				goto out;
 			}
 		}
-
-		/* if we got here, then we didn't match the name of any slave */
-
-		if (strlen(buf) == 0 || buf[0] == '\n') {
-			pr_info("%s: Setting active slave to None.\n",
-				bond->dev->name);
-			bond->primary_slave = NULL;
-			bond_select_active_slave(bond);
-		} else {
-			pr_info("%s: Unable to set %.*s as active slave as it is not a slave.\n",
-				bond->dev->name, (int)strlen(buf) - 1, buf);
-		}
 	}
+
+	pr_info("%s: Unable to set %.*s as active slave.\n",
+		bond->dev->name, (int)strlen(buf) - 1, buf);
  out:
 	write_unlock_bh(&bond->curr_slave_lock);
 	read_unlock(&bond->lock);

drivers/net/forcedeth.c

@@ -2764,7 +2764,14 @@ static int nv_rx_process_optimized(struct net_device *dev, int limit)
 			prefetch(skb->data);
 
 			vlanflags = le32_to_cpu(np->get_rx.ex->buflow);
-			if (vlanflags & NV_RX3_VLAN_TAG_PRESENT) {
+
+			/*
+			 * There's need to check for NETIF_F_HW_VLAN_RX here.
+			 * Even if vlan rx accel is disabled,
+			 * NV_RX3_VLAN_TAG_PRESENT is pseudo randomly set.
+			 */
+			if (dev->features & NETIF_F_HW_VLAN_RX &&
+			    vlanflags & NV_RX3_VLAN_TAG_PRESENT) {
 				u16 vid = vlanflags & NV_RX3_VLAN_TAG_MASK;
 
 				__vlan_hwaccel_put_tag(skb, vid);
@@ -5331,15 +5338,16 @@ static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_i
 		np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;
 		dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_SG |
 			NETIF_F_TSO | NETIF_F_RXCSUM;
-		dev->features |= dev->hw_features;
 	}
 
 	np->vlanctl_bits = 0;
 	if (id->driver_data & DEV_HAS_VLAN) {
 		np->vlanctl_bits = NVREG_VLANCONTROL_ENABLE;
-		dev->features |= NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX;
+		dev->hw_features |= NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX;
 	}
 
+	dev->features |= dev->hw_features;
+
 	np->pause_flags = NV_PAUSEFRAME_RX_CAPABLE | NV_PAUSEFRAME_RX_REQ | NV_PAUSEFRAME_AUTONEG;
 	if ((id->driver_data & DEV_HAS_PAUSEFRAME_TX_V1) ||
 	    (id->driver_data & DEV_HAS_PAUSEFRAME_TX_V2) ||
@@ -5607,6 +5615,8 @@ static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_i
 		goto out_error;
 	}
 
+	nv_vlan_mode(dev, dev->features);
+
 	netif_carrier_off(dev);
 
 	dev_info(&pci_dev->dev, "ifname %s, PHY OUI 0x%x @ %d, addr %pM\n",

drivers/net/gianfar.c

@@ -388,12 +388,8 @@ static void gfar_init_mac(struct net_device *ndev)
 	if (priv->hwts_rx_en)
 		rctrl |= RCTRL_PRSDEP_INIT | RCTRL_TS_ENABLE;
 
-	/* keep vlan related bits if it's enabled */
-	if (ndev->features & NETIF_F_HW_VLAN_TX)
-		rctrl |= RCTRL_VLEX | RCTRL_PRSDEP_INIT;
-
 	if (ndev->features & NETIF_F_HW_VLAN_RX)
-		tctrl |= TCTRL_VLINS;
+		rctrl |= RCTRL_VLEX | RCTRL_PRSDEP_INIT;
 
 	/* Init rctrl based on our settings */
 	gfar_write(&regs->rctrl, rctrl);

drivers/net/ifb.c

@@ -183,7 +183,7 @@ static void ifb_setup(struct net_device *dev)
 
 	dev->flags |= IFF_NOARP;
 	dev->flags &= ~IFF_MULTICAST;
-	dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
+	dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING);
 	random_ether_addr(dev->dev_addr);
 }
 

drivers/net/macvlan.c

@@ -572,7 +572,7 @@ void macvlan_common_setup(struct net_device *dev)
 {
 	ether_setup(dev);
 
-	dev->priv_flags	       &= ~IFF_XMIT_DST_RELEASE;
+	dev->priv_flags	       &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING);
 	dev->netdev_ops		= &macvlan_netdev_ops;
 	dev->destructor		= free_netdev;
 	dev->header_ops		= &macvlan_hard_header_ops,

drivers/net/tg3.c

@@ -190,6 +190,7 @@ static inline void _tg3_flag_clear(enum TG3_FLAGS flag, unsigned long *bits)
 
 /* minimum number of free TX descriptors required to wake up TX process */
 #define TG3_TX_WAKEUP_THRESH(tnapi)		((tnapi)->tx_pending / 4)
+#define TG3_TX_BD_DMA_MAX		4096
 
 #define TG3_RAW_IP_ALIGN 2
 
@@ -4824,7 +4825,7 @@ static void tg3_tx(struct tg3_napi *tnapi)
 	txq = netdev_get_tx_queue(tp->dev, index);
 
 	while (sw_idx != hw_idx) {
-		struct ring_info *ri = &tnapi->tx_buffers[sw_idx];
+		struct tg3_tx_ring_info *ri = &tnapi->tx_buffers[sw_idx];
 		struct sk_buff *skb = ri->skb;
 		int i, tx_bug = 0;
 
@@ -4840,6 +4841,12 @@ static void tg3_tx(struct tg3_napi *tnapi)
 
 		ri->skb = NULL;
 
+		while (ri->fragmented) {
+			ri->fragmented = false;
+			sw_idx = NEXT_TX(sw_idx);
+			ri = &tnapi->tx_buffers[sw_idx];
+		}
+
 		sw_idx = NEXT_TX(sw_idx);
 
 		for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
@@ -4851,6 +4858,13 @@ static void tg3_tx(struct tg3_napi *tnapi)
 				       dma_unmap_addr(ri, mapping),
 				       skb_shinfo(skb)->frags[i].size,
 				       PCI_DMA_TODEVICE);
+
+			while (ri->fragmented) {
+				ri->fragmented = false;
+				sw_idx = NEXT_TX(sw_idx);
+				ri = &tnapi->tx_buffers[sw_idx];
+			}
+
 			sw_idx = NEXT_TX(sw_idx);
 		}
 
@@ -5901,40 +5915,100 @@ static inline int tg3_40bit_overflow_test(struct tg3 *tp, dma_addr_t mapping,
 #endif
 }
 
-static void tg3_set_txd(struct tg3_napi *tnapi, int entry,
-			dma_addr_t mapping, int len, u32 flags,
-			u32 mss_and_is_end)
+static inline void tg3_tx_set_bd(struct tg3_tx_buffer_desc *txbd,
+				 dma_addr_t mapping, u32 len, u32 flags,
+				 u32 mss, u32 vlan)
+{
+	txbd->addr_hi = ((u64) mapping >> 32);
+	txbd->addr_lo = ((u64) mapping & 0xffffffff);
+	txbd->len_flags = (len << TXD_LEN_SHIFT) | (flags & 0x0000ffff);
+	txbd->vlan_tag = (mss << TXD_MSS_SHIFT) | (vlan << TXD_VLAN_TAG_SHIFT);
+}
+
+static bool tg3_tx_frag_set(struct tg3_napi *tnapi, u32 *entry, u32 *budget,
+			    dma_addr_t map, u32 len, u32 flags,
+			    u32 mss, u32 vlan)
 {
-	struct tg3_tx_buffer_desc *txd = &tnapi->tx_ring[entry];
-	int is_end = (mss_and_is_end & 0x1);
-	u32 mss = (mss_and_is_end >> 1);
-	u32 vlan_tag = 0;
+	struct tg3 *tp = tnapi->tp;
+	bool hwbug = false;
+
+	if (tg3_flag(tp, SHORT_DMA_BUG) && len <= 8)
+		hwbug = 1;
+
+	if (tg3_4g_overflow_test(map, len))
+		hwbug = 1;
+
+	if (tg3_40bit_overflow_test(tp, map, len))
+		hwbug = 1;
+
+	if (tg3_flag(tp, 4K_FIFO_LIMIT)) {
+		u32 tmp_flag = flags & ~TXD_FLAG_END;
+		while (len > TG3_TX_BD_DMA_MAX) {
+			u32 frag_len = TG3_TX_BD_DMA_MAX;
+			len -= TG3_TX_BD_DMA_MAX;
+
+			if (len) {
+				tnapi->tx_buffers[*entry].fragmented = true;
+				/* Avoid the 8byte DMA problem */
+				if (len <= 8) {
+					len += TG3_TX_BD_DMA_MAX / 2;
+					frag_len = TG3_TX_BD_DMA_MAX / 2;
+				}
+			} else
+				tmp_flag = flags;
+
+			if (*budget) {
+				tg3_tx_set_bd(&tnapi->tx_ring[*entry], map,
+					      frag_len, tmp_flag, mss, vlan);
+				(*budget)--;
+				*entry = NEXT_TX(*entry);
+			} else {
+				hwbug = 1;
+				break;
+			}
+
+			map += frag_len;
+		}
 
-	if (is_end)
-		flags |= TXD_FLAG_END;
-	if (flags & TXD_FLAG_VLAN) {
-		vlan_tag = flags >> 16;
-		flags &= 0xffff;
+		if (len) {
+			if (*budget) {
+				tg3_tx_set_bd(&tnapi->tx_ring[*entry], map,
+					      len, flags, mss, vlan);
+				(*budget)--;
+				*entry = NEXT_TX(*entry);
+			} else {
+				hwbug = 1;
+			}
+		}
+	} else {
+		tg3_tx_set_bd(&tnapi->tx_ring[*entry], map,
+			      len, flags, mss, vlan);
+		*entry = NEXT_TX(*entry);
 	}
-	vlan_tag |= (mss << TXD_MSS_SHIFT);
 
-	txd->addr_hi = ((u64) mapping >> 32);
-	txd->addr_lo = ((u64) mapping & 0xffffffff);
-	txd->len_flags = (len << TXD_LEN_SHIFT) | flags;
-	txd->vlan_tag = vlan_tag << TXD_VLAN_TAG_SHIFT;
+	return hwbug;
 }
 
-static void tg3_skb_error_unmap(struct tg3_napi *tnapi,
-				struct sk_buff *skb, int last)
+static void tg3_tx_skb_unmap(struct tg3_napi *tnapi, u32 entry, int last)
 {
 	int i;
-	u32 entry = tnapi->tx_prod;
-	struct ring_info *txb = &tnapi->tx_buffers[entry];
+	struct sk_buff *skb;
+	struct tg3_tx_ring_info *txb = &tnapi->tx_buffers[entry];
+
+	skb = txb->skb;
+	txb->skb = NULL;
 
 	pci_unmap_single(tnapi->tp->pdev,
 			 dma_unmap_addr(txb, mapping),
 			 skb_headlen(skb),
 			 PCI_DMA_TODEVICE);
+
+	while (txb->fragmented) {
+		txb->fragmented = false;
+		entry = NEXT_TX(entry);
+		txb = &tnapi->tx_buffers[entry];
+	}
+
 	for (i = 0; i < last; i++) {
 		skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
 
@@ -5944,18 +6018,24 @@ static void tg3_skb_error_unmap(struct tg3_napi *tnapi,
 		pci_unmap_page(tnapi->tp->pdev,
 			       dma_unmap_addr(txb, mapping),
 			       frag->size, PCI_DMA_TODEVICE);
+
+		while (txb->fragmented) {
+			txb->fragmented = false;
+			entry = NEXT_TX(entry);
+			txb = &tnapi->tx_buffers[entry];
+		}
 	}
 }
 
 /* Workaround 4GB and 40-bit hardware DMA bugs. */
 static int tigon3_dma_hwbug_workaround(struct tg3_napi *tnapi,
 				       struct sk_buff *skb,
-				       u32 base_flags, u32 mss)
+				       u32 *entry, u32 *budget,
+				       u32 base_flags, u32 mss, u32 vlan)
 {
 	struct tg3 *tp = tnapi->tp;
 	struct sk_buff *new_skb;
 	dma_addr_t new_addr = 0;
-	u32 entry = tnapi->tx_prod;
 	int ret = 0;
 
 	if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5701)
@@ -5976,24 +6056,22 @@ static int tigon3_dma_hwbug_workaround(struct tg3_napi *tnapi,
 					  PCI_DMA_TODEVICE);
 		/* Make sure the mapping succeeded */
 		if (pci_dma_mapping_error(tp->pdev, new_addr)) {
-			ret = -1;
 			dev_kfree_skb(new_skb);
-
-		/* Make sure new skb does not cross any 4G boundaries.
-		 * Drop the packet if it does.
-		 */
-		} else if (tg3_4g_overflow_test(new_addr, new_skb->len)) {
-			pci_unmap_single(tp->pdev, new_addr, new_skb->len,
-					 PCI_DMA_TODEVICE);
 			ret = -1;
-			dev_kfree_skb(new_skb);
 		} else {
-			tnapi->tx_buffers[entry].skb = new_skb;
-			dma_unmap_addr_set(&tnapi->tx_buffers[entry],
+			base_flags |= TXD_FLAG_END;
+
+			tnapi->tx_buffers[*entry].skb = new_skb;
+			dma_unmap_addr_set(&tnapi->tx_buffers[*entry],
 					   mapping, new_addr);
 
-			tg3_set_txd(tnapi, entry, new_addr, new_skb->len,
-				    base_flags, 1 | (mss << 1));
+			if (tg3_tx_frag_set(tnapi, entry, budget, new_addr,
+					    new_skb->len, base_flags,
+					    mss, vlan)) {
+				tg3_tx_skb_unmap(tnapi, *entry, 0);
+				dev_kfree_skb(new_skb);
+				ret = -1;
+			}
 		}
 	}
 
@@ -6051,7 +6129,8 @@ tg3_tso_bug_end:
 static netdev_tx_t tg3_start_xmit(struct sk_buff *skb, struct net_device *dev)
 {
 	struct tg3 *tp = netdev_priv(dev);
-	u32 len, entry, base_flags, mss;
+	u32 len, entry, base_flags, mss, vlan = 0;
+	u32 budget;
 	int i = -1, would_hit_hwbug;
 	dma_addr_t mapping;
 	struct tg3_napi *tnapi;
@@ -6063,12 +6142,14 @@ static netdev_tx_t tg3_start_xmit(struct sk_buff *skb, struct net_device *dev)
 	if (tg3_flag(tp, ENABLE_TSS))
 		tnapi++;
 
+	budget = tg3_tx_avail(tnapi);
+
 	/* We are running in BH disabled context with netif_tx_lock
 	 * and TX reclaim runs via tp->napi.poll inside of a software
 	 * interrupt.  Furthermore, IRQ processing runs lockless so we have
 	 * no IRQ context deadlocks to worry about either.  Rejoice!
 	 */
-	if (unlikely(tg3_tx_avail(tnapi) <= (skb_shinfo(skb)->nr_frags + 1))) {
+	if (unlikely(budget <= (skb_shinfo(skb)->nr_frags + 1))) {
 		if (!netif_tx_queue_stopped(txq)) {
 			netif_tx_stop_queue(txq);
 
@@ -6153,9 +6234,12 @@ static netdev_tx_t tg3_start_xmit(struct sk_buff *skb, struct net_device *dev)
 		}
 	}
 
-	if (vlan_tx_tag_present(skb))
-		base_flags |= (TXD_FLAG_VLAN |
-			       (vlan_tx_tag_get(skb) << 16));
+#ifdef BCM_KERNEL_SUPPORTS_8021Q
+	if (vlan_tx_tag_present(skb)) {
+		base_flags |= TXD_FLAG_VLAN;
+		vlan = vlan_tx_tag_get(skb);
+	}
+#endif
 
 	if (tg3_flag(tp, USE_JUMBO_BDFLAG) &&
 	    !mss && skb->len > VLAN_ETH_FRAME_LEN)
@@ -6174,25 +6258,23 @@ static netdev_tx_t tg3_start_xmit(struct sk_buff *skb, struct net_device *dev)
 
 	would_hit_hwbug = 0;
 
-	if (tg3_flag(tp, SHORT_DMA_BUG) && len <= 8)
-		would_hit_hwbug = 1;
-
-	if (tg3_4g_overflow_test(mapping, len))
-		would_hit_hwbug = 1;
-
-	if (tg3_40bit_overflow_test(tp, mapping, len))
-		would_hit_hwbug = 1;
-
 	if (tg3_flag(tp, 5701_DMA_BUG))
 		would_hit_hwbug = 1;
 
-	tg3_set_txd(tnapi, entry, mapping, len, base_flags,
-		    (skb_shinfo(skb)->nr_frags == 0) | (mss << 1));
-
-	entry = NEXT_TX(entry);
+	if (tg3_tx_frag_set(tnapi, &entry, &budget, mapping, len, base_flags |
+			  ((skb_shinfo(skb)->nr_frags == 0) ? TXD_FLAG_END : 0),
+			    mss, vlan))
+		would_hit_hwbug = 1;
 
 	/* Now loop through additional data fragments, and queue them. */
 	if (skb_shinfo(skb)->nr_frags > 0) {
+		u32 tmp_mss = mss;
+
+		if (!tg3_flag(tp, HW_TSO_1) &&
+		    !tg3_flag(tp, HW_TSO_2) &&
+		    !tg3_flag(tp, HW_TSO_3))
+			tmp_mss = 0;
+
 		last = skb_shinfo(skb)->nr_frags - 1;
 		for (i = 0; i <= last; i++) {
 			skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
@@ -6209,39 +6291,25 @@ static netdev_tx_t tg3_start_xmit(struct sk_buff *skb, struct net_device *dev)
 			if (pci_dma_mapping_error(tp->pdev, mapping))
 				goto dma_error;
 
-			if (tg3_flag(tp, SHORT_DMA_BUG) &&
-			    len <= 8)
+			if (tg3_tx_frag_set(tnapi, &entry, &budget, mapping,
+					    len, base_flags |
+					    ((i == last) ? TXD_FLAG_END : 0),
+					    tmp_mss, vlan))
 				would_hit_hwbug = 1;
-
-			if (tg3_4g_overflow_test(mapping, len))
-				would_hit_hwbug = 1;
-
-			if (tg3_40bit_overflow_test(tp, mapping, len))
-				would_hit_hwbug = 1;
-
-			if (tg3_flag(tp, HW_TSO_1) ||
-			    tg3_flag(tp, HW_TSO_2) ||
-			    tg3_flag(tp, HW_TSO_3))
-				tg3_set_txd(tnapi, entry, mapping, len,
-					    base_flags, (i == last)|(mss << 1));
-			else
-				tg3_set_txd(tnapi, entry, mapping, len,
-					    base_flags, (i == last));
-
-			entry = NEXT_TX(entry);
 		}
 	}
 
 	if (would_hit_hwbug) {
-		tg3_skb_error_unmap(tnapi, skb, i);
+		tg3_tx_skb_unmap(tnapi, tnapi->tx_prod, i);
 
 		/* If the workaround fails due to memory/mapping
 		 * failure, silently drop this packet.
 		 */
-		if (tigon3_dma_hwbug_workaround(tnapi, skb, base_flags, mss))
+		entry = tnapi->tx_prod;
+		budget = tg3_tx_avail(tnapi);
+		if (tigon3_dma_hwbug_workaround(tnapi, skb, &entry, &budget,
+						base_flags, mss, vlan))
 			goto out_unlock;
-
-		entry = NEXT_TX(tnapi->tx_prod);
 	}
 
 	skb_tx_timestamp(skb);
@@ -6269,7 +6337,7 @@ out_unlock:
 	return NETDEV_TX_OK;
 
 dma_error:
-	tg3_skb_error_unmap(tnapi, skb, i);
+	tg3_tx_skb_unmap(tnapi, tnapi->tx_prod, i);
 	dev_kfree_skb(skb);
 	tnapi->tx_buffers[tnapi->tx_prod].skb = NULL;
 	return NETDEV_TX_OK;
@@ -6602,35 +6670,13 @@ static void tg3_free_rings(struct tg3 *tp)
 		if (!tnapi->tx_buffers)
 			continue;
 
-		for (i = 0; i < TG3_TX_RING_SIZE; ) {
-			struct ring_info *txp;
-			struct sk_buff *skb;
-			unsigned int k;
-
-			txp = &tnapi->tx_buffers[i];
-			skb = txp->skb;
+		for (i = 0; i < TG3_TX_RING_SIZE; i++) {
+			struct sk_buff *skb = tnapi->tx_buffers[i].skb;
 
-			if (skb == NULL) {
-				i++;
+			if (!skb)
 				continue;
-			}
-
-			pci_unmap_single(tp->pdev,
-					 dma_unmap_addr(txp, mapping),
-					 skb_headlen(skb),
-					 PCI_DMA_TODEVICE);
-			txp->skb = NULL;
 
-			i++;
-
-			for (k = 0; k < skb_shinfo(skb)->nr_frags; k++) {
-				txp = &tnapi->tx_buffers[i & (TG3_TX_RING_SIZE - 1)];
-				pci_unmap_page(tp->pdev,
-					       dma_unmap_addr(txp, mapping),
-					       skb_shinfo(skb)->frags[k].size,
-					       PCI_DMA_TODEVICE);
-				i++;
-			}
+			tg3_tx_skb_unmap(tnapi, i, skb_shinfo(skb)->nr_frags);
 
 			dev_kfree_skb_any(skb);
 		}
@@ -6762,9 +6808,9 @@ static int tg3_alloc_consistent(struct tg3 *tp)
 		 */
 		if ((!i && !tg3_flag(tp, ENABLE_TSS)) ||
 		    (i && tg3_flag(tp, ENABLE_TSS))) {
-			tnapi->tx_buffers = kzalloc(sizeof(struct ring_info) *
-						    TG3_TX_RING_SIZE,
-						    GFP_KERNEL);
+			tnapi->tx_buffers = kzalloc(
+					       sizeof(struct tg3_tx_ring_info) *
+					       TG3_TX_RING_SIZE, GFP_KERNEL);
 			if (!tnapi->tx_buffers)
 				goto err_out;
 
@@ -8360,7 +8406,7 @@ static int tg3_reset_hw(struct tg3 *tp, int reset_phy)
 	/* Program the jumbo buffer descriptor ring control
 	 * blocks on those devices that have them.
 	 */
-	if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719 ||
+	if (tp->pci_chip_rev_id == CHIPREV_ID_5719_A0 ||
 	    (tg3_flag(tp, JUMBO_CAPABLE) && !tg3_flag(tp, 5780_CLASS))) {
 
 		if (tg3_flag(tp, JUMBO_RING_ENABLE)) {
@@ -11204,6 +11250,7 @@ static int tg3_run_loopback(struct tg3 *tp, u32 pktsz, int loopback_mode)
 {
 	u32 mac_mode, rx_start_idx, rx_idx, tx_idx, opaque_key;
 	u32 base_flags = 0, mss = 0, desc_idx, coal_now, data_off, val;
+	u32 budget;
 	struct sk_buff *skb, *rx_skb;
 	u8 *tx_data;
 	dma_addr_t map;
@@ -11363,6 +11410,10 @@ static int tg3_run_loopback(struct tg3 *tp, u32 pktsz, int loopback_mode)
 		return -EIO;
 	}
 
+	val = tnapi->tx_prod;
+	tnapi->tx_buffers[val].skb = skb;
+	dma_unmap_addr_set(&tnapi->tx_buffers[val], mapping, map);
+
 	tw32_f(HOSTCC_MODE, tp->coalesce_mode | HOSTCC_MODE_ENABLE |
 	       rnapi->coal_now);
 
@@ -11370,8 +11421,13 @@ static int tg3_run_loopback(struct tg3 *tp, u32 pktsz, int loopback_mode)
 
 	rx_start_idx = rnapi->hw_status->idx[0].rx_producer;
 
-	tg3_set_txd(tnapi, tnapi->tx_prod, map, tx_len,
-		    base_flags, (mss << 1) | 1);
+	budget = tg3_tx_avail(tnapi);
+	if (tg3_tx_frag_set(tnapi, &val, &budget, map, tx_len,
+			    base_flags | TXD_FLAG_END, mss, 0)) {
+		tnapi->tx_buffers[val].skb = NULL;
+		dev_kfree_skb(skb);
+		return -EIO;
+	}
 
 	tnapi->tx_prod++;
 
@@ -11394,7 +11450,7 @@ static int tg3_run_loopback(struct tg3 *tp, u32 pktsz, int loopback_mode)
 			break;
 	}
 
-	pci_unmap_single(tp->pdev, map, tx_len, PCI_DMA_TODEVICE);
+	tg3_tx_skb_unmap(tnapi, tnapi->tx_prod - 1, 0);
 	dev_kfree_skb(skb);
 
 	if (tx_idx != tnapi->tx_prod)
@@ -13817,7 +13873,7 @@ static int __devinit tg3_get_invariants(struct tg3 *tp)
 		tg3_flag_set(tp, 5705_PLUS);
 
 	/* Determine TSO capabilities */
-	if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719)
+	if (tp->pci_chip_rev_id == CHIPREV_ID_5719_A0)
 		; /* Do nothing. HW bug. */
 	else if (tg3_flag(tp, 57765_PLUS))
 		tg3_flag_set(tp, HW_TSO_3);
@@ -13880,11 +13936,14 @@ static int __devinit tg3_get_invariants(struct tg3 *tp)
 	if (tg3_flag(tp, 5755_PLUS))
 		tg3_flag_set(tp, SHORT_DMA_BUG);
 
+	if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719)
+		tg3_flag_set(tp, 4K_FIFO_LIMIT);
+
 	if (tg3_flag(tp, 5717_PLUS))
 		tg3_flag_set(tp, LRG_PROD_RING_CAP);
 
 	if (tg3_flag(tp, 57765_PLUS) &&
-	    GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5719)
+	    tp->pci_chip_rev_id != CHIPREV_ID_5719_A0)
 		tg3_flag_set(tp, USE_JUMBO_BDFLAG);
 
 	if (!tg3_flag(tp, 5705_PLUS) ||

drivers/net/tg3.h

@@ -2652,6 +2652,12 @@ struct ring_info {
 	DEFINE_DMA_UNMAP_ADDR(mapping);
 };
 
+struct tg3_tx_ring_info {
+	struct sk_buff			*skb;
+	DEFINE_DMA_UNMAP_ADDR(mapping);
+	bool				fragmented;
+};
+
 struct tg3_link_config {
 	/* Describes what we're trying to get. */
 	u32				advertising;
@@ -2816,7 +2822,7 @@ struct tg3_napi {
 	u32				last_tx_cons;
 	u32				prodmbox;
 	struct tg3_tx_buffer_desc	*tx_ring;
-	struct ring_info		*tx_buffers;
+	struct tg3_tx_ring_info		*tx_buffers;
 
 	dma_addr_t			status_mapping;
 	dma_addr_t			rx_rcb_mapping;
@@ -2899,6 +2905,7 @@ enum TG3_FLAGS {
 	TG3_FLAG_57765_PLUS,
 	TG3_FLAG_APE_HAS_NCSI,
 	TG3_FLAG_5717_PLUS,
+	TG3_FLAG_4K_FIFO_LIMIT,
 
 	/* Add new flags before this comment and TG3_FLAG_NUMBER_OF_FLAGS */
 	TG3_FLAG_NUMBER_OF_FLAGS,	/* Last entry in enum TG3_FLAGS */

drivers/net/tun.c

@@ -528,6 +528,7 @@ static void tun_net_init(struct net_device *dev)
 		dev->netdev_ops = &tap_netdev_ops;
 		/* Ethernet TAP Device */
 		ether_setup(dev);
+		dev->priv_flags &= ~IFF_TX_SKB_SHARING;
 
 		random_ether_addr(dev->dev_addr);
 

drivers/net/usb/asix.c

@@ -314,12 +314,11 @@ static int asix_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
 	skb_pull(skb, 4);
 
 	while (skb->len > 0) {
-		if ((short)(header & 0x0000ffff) !=
-		    ~((short)((header & 0xffff0000) >> 16))) {
+		if ((header & 0x07ff) != ((~header >> 16) & 0x07ff))
 			netdev_err(dev->net, "asix_rx_fixup() Bad Header Length\n");
-		}
+
 		/* get the packet length */
-		size = (u16) (header & 0x0000ffff);
+		size = (u16) (header & 0x000007ff);
 
 		if ((skb->len) - ((size + 1) & 0xfffe) == 0) {
 			u8 alignment = (unsigned long)skb->data & 0x3;

drivers/net/veth.c

@@ -263,6 +263,8 @@ static void veth_setup(struct net_device *dev)
 {
 	ether_setup(dev);
 
+	dev->priv_flags &= ~IFF_TX_SKB_SHARING;
+
 	dev->netdev_ops = &veth_netdev_ops;
 	dev->ethtool_ops = &veth_ethtool_ops;
 	dev->features |= NETIF_F_LLTX;

drivers/net/wan/hdlc_fr.c

@@ -1074,9 +1074,10 @@ static int fr_add_pvc(struct net_device *frad, unsigned int dlci, int type)
 
 	used = pvc_is_used(pvc);
 
-	if (type == ARPHRD_ETHER)
+	if (type == ARPHRD_ETHER) {
 		dev = alloc_netdev(0, "pvceth%d", ether_setup);
-	else
+		dev->priv_flags &= ~IFF_TX_SKB_SHARING;
+	} else
 		dev = alloc_netdev(0, "pvc%d", pvc_setup);
 
 	if (!dev) {

drivers/net/wireless/airo.c

@@ -2823,6 +2823,7 @@ static struct net_device *_init_airo_card( unsigned short irq, int port,
 	dev->wireless_data = &ai->wireless_data;
 	dev->irq = irq;
 	dev->base_addr = port;
+	dev->priv_flags &= ~IFF_TX_SKB_SHARING;
 
 	SET_NETDEV_DEV(dev, dmdev);
 

drivers/net/wireless/b43/Kconfig

@@ -28,7 +28,7 @@ config B43
 
 config B43_BCMA
 	bool "Support for BCMA bus"
-	depends on B43 && BCMA && BROKEN
+	depends on B43 && BCMA
 	default y
 
 config B43_SSB

drivers/net/wireless/b43/bus.c

@@ -244,10 +244,12 @@ void b43_bus_set_wldev(struct b43_bus_dev *dev, void *wldev)
 #ifdef CONFIG_B43_BCMA
 	case B43_BUS_BCMA:
 		bcma_set_drvdata(dev->bdev, wldev);
+		break;
 #endif
 #ifdef CONFIG_B43_SSB
 	case B43_BUS_SSB:
 		ssb_set_drvdata(dev->sdev, wldev);
+		break;
 #endif
 	}
 }

drivers/net/wireless/b43/main.c

@@ -5350,6 +5350,7 @@ static void b43_ssb_remove(struct ssb_device *sdev)
 {
 	struct b43_wl *wl = ssb_get_devtypedata(sdev);
 	struct b43_wldev *wldev = ssb_get_drvdata(sdev);
+	struct b43_bus_dev *dev = wldev->dev;
 
 	/* We must cancel any work here before unregistering from ieee80211,
 	 * as the ieee80211 unreg will destroy the workqueue. */
@@ -5365,14 +5366,14 @@ static void b43_ssb_remove(struct ssb_device *sdev)
 		ieee80211_unregister_hw(wl->hw);
 	}
 
-	b43_one_core_detach(wldev->dev);
+	b43_one_core_detach(dev);
 
 	if (list_empty(&wl->devlist)) {
 		b43_leds_unregister(wl);
 		/* Last core on the chip unregistered.
 		 * We can destroy common struct b43_wl.
 		 */
-		b43_wireless_exit(wldev->dev, wl);
+		b43_wireless_exit(dev, wl);
 	}
 }
 

drivers/net/wireless/hostap/hostap_main.c

@@ -855,6 +855,7 @@ void hostap_setup_dev(struct net_device *dev, local_info_t *local,
 
 	iface = netdev_priv(dev);
 	ether_setup(dev);
+	dev->priv_flags &= ~IFF_TX_SKB_SHARING;
 
 	/* kernel callbacks */
 	if (iface) {

drivers/nfc/pn533.c

@@ -1596,7 +1596,7 @@ static void pn533_disconnect(struct usb_interface *interface)
 	usb_free_urb(dev->out_urb);
 	kfree(dev);
 
-	nfc_dev_info(&dev->interface->dev, "NXP PN533 NFC device disconnected");
+	nfc_dev_info(&interface->dev, "NXP PN533 NFC device disconnected");
 }
 
 static struct usb_driver pn533_driver = {

drivers/staging/ath6kl/os/linux/ar6000_drv.c

@@ -6205,6 +6205,7 @@ int ar6000_create_ap_interface(struct ar6_softc *ar, char *ap_ifname)
     
     ether_setup(dev);
     init_netdev(dev, ap_ifname);
+    dev->priv_flags &= ~IFF_TX_SKB_SHARING;
 
     if (register_netdev(dev)) {
         AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("ar6000_create_ap_interface: register_netdev failed\n"));

include/linux/if.h

@@ -76,6 +76,8 @@
 #define IFF_BRIDGE_PORT	0x4000		/* device used as bridge port */
 #define IFF_OVS_DATAPATH	0x8000	/* device used as Open vSwitch
 					 * datapath port */
+#define IFF_TX_SKB_SHARING	0x10000	/* The interface supports sharing
+					 * skbs on transmit */
 
 #define IF_GET_IFACE	0x0001		/* for querying only */
 #define IF_GET_PROTO	0x0002

include/linux/netdevice.h

@@ -1132,7 +1132,7 @@ struct net_device {
 	spinlock_t		addr_list_lock;
 	struct netdev_hw_addr_list	uc;	/* Unicast mac addresses */
 	struct netdev_hw_addr_list	mc;	/* Multicast mac addresses */
-	int			uc_promisc;
+	bool			uc_promisc;
 	unsigned int		promiscuity;
 	unsigned int		allmulti;
 
@@ -1679,9 +1679,12 @@ static inline int skb_gro_header_hard(struct sk_buff *skb, unsigned int hlen)
 static inline void *skb_gro_header_slow(struct sk_buff *skb, unsigned int hlen,
 					unsigned int offset)
 {
+	if (!pskb_may_pull(skb, hlen))
+		return NULL;
+
 	NAPI_GRO_CB(skb)->frag0 = NULL;
 	NAPI_GRO_CB(skb)->frag0_len = 0;
-	return pskb_may_pull(skb, hlen) ? skb->data + offset : NULL;
+	return skb->data + offset;
 }
 
 static inline void *skb_gro_mac_header(struct sk_buff *skb)

net/8021q/vlan_dev.c

@@ -695,7 +695,7 @@ void vlan_setup(struct net_device *dev)
 	ether_setup(dev);
 
 	dev->priv_flags		|= IFF_802_1Q_VLAN;
-	dev->priv_flags		&= ~IFF_XMIT_DST_RELEASE;
+	dev->priv_flags		&= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING);
 	dev->tx_queue_len	= 0;
 
 	dev->netdev_ops		= &vlan_netdev_ops;

net/bluetooth/bnep/netdev.c

@@ -231,6 +231,7 @@ void bnep_net_setup(struct net_device *dev)
 	dev->addr_len = ETH_ALEN;
 
 	ether_setup(dev);
+	dev->priv_flags &= ~IFF_TX_SKB_SHARING;
 	dev->netdev_ops = &bnep_netdev_ops;
 
 	dev->watchdog_timeo  = HZ * 2;

net/core/dev.c

@@ -4497,10 +4497,10 @@ void __dev_set_rx_mode(struct net_device *dev)
 		 */
 		if (!netdev_uc_empty(dev) && !dev->uc_promisc) {
 			__dev_set_promiscuity(dev, 1);
-			dev->uc_promisc = 1;
+			dev->uc_promisc = true;
 		} else if (netdev_uc_empty(dev) && dev->uc_promisc) {
 			__dev_set_promiscuity(dev, -1);
-			dev->uc_promisc = 0;
+			dev->uc_promisc = false;
 		}
 
 		if (ops->ndo_set_multicast_list)

net/core/pktgen.c

@@ -1070,7 +1070,9 @@ static ssize_t pktgen_if_write(struct file *file,
 		len = num_arg(&user_buffer[i], 10, &value);
 		if (len < 0)
 			return len;
-
+		if ((value > 0) &&
+		    (!(pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)))
+			return -ENOTSUPP;
 		i += len;
 		pkt_dev->clone_skb = value;
 
@@ -3555,7 +3557,6 @@ static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
 	pkt_dev->min_pkt_size = ETH_ZLEN;
 	pkt_dev->max_pkt_size = ETH_ZLEN;
 	pkt_dev->nfrags = 0;
-	pkt_dev->clone_skb = pg_clone_skb_d;
 	pkt_dev->delay = pg_delay_d;
 	pkt_dev->count = pg_count_d;
 	pkt_dev->sofar = 0;
@@ -3563,7 +3564,6 @@ static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
 	pkt_dev->udp_src_max = 9;
 	pkt_dev->udp_dst_min = 9;
 	pkt_dev->udp_dst_max = 9;
-
 	pkt_dev->vlan_p = 0;
 	pkt_dev->vlan_cfi = 0;
 	pkt_dev->vlan_id = 0xffff;
@@ -3575,6 +3575,8 @@ static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
 	err = pktgen_setup_dev(pkt_dev, ifname);
 	if (err)
 		goto out1;
+	if (pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)
+		pkt_dev->clone_skb = pg_clone_skb_d;
 
 	pkt_dev->entry = proc_create_data(ifname, 0600, pg_proc_dir,
 					  &pktgen_if_fops, pkt_dev);

net/ethernet/eth.c

@@ -231,6 +231,7 @@ EXPORT_SYMBOL(eth_header_parse);
  * eth_header_cache - fill cache entry from neighbour
  * @neigh: source neighbour
  * @hh: destination cache entry
+ * @type: Ethernet type field
  * Create an Ethernet header template from the neighbour.
  */
 int eth_header_cache(const struct neighbour *neigh, struct hh_cache *hh, __be16 type)
@@ -339,6 +340,7 @@ void ether_setup(struct net_device *dev)
 	dev->addr_len		= ETH_ALEN;
 	dev->tx_queue_len	= 1000;	/* Ethernet wants good queues */
 	dev->flags		= IFF_BROADCAST|IFF_MULTICAST;
+	dev->priv_flags		= IFF_TX_SKB_SHARING;
 
 	memset(dev->broadcast, 0xFF, ETH_ALEN);
 

net/ipv4/devinet.c

@@ -1134,15 +1134,15 @@ static void inetdev_send_gratuitous_arp(struct net_device *dev,
 					struct in_device *in_dev)
 
 {
-	struct in_ifaddr *ifa = in_dev->ifa_list;
-
-	if (!ifa)
-		return;
+	struct in_ifaddr *ifa;
 
-	arp_send(ARPOP_REQUEST, ETH_P_ARP,
-		 ifa->ifa_local, dev,
-		 ifa->ifa_local, NULL,
-		 dev->dev_addr, NULL);
+	for (ifa = in_dev->ifa_list; ifa;
+	     ifa = ifa->ifa_next) {
+		arp_send(ARPOP_REQUEST, ETH_P_ARP,
+			 ifa->ifa_local, dev,
+			 ifa->ifa_local, NULL,
+			 dev->dev_addr, NULL);
+	}
 }
 
 /* Called only under RTNL semaphore */

net/ipv6/addrconf.c

@@ -1481,6 +1481,8 @@ static void addrconf_join_anycast(struct inet6_ifaddr *ifp)
 static void addrconf_leave_anycast(struct inet6_ifaddr *ifp)
 {
 	struct in6_addr addr;
+	if (ifp->prefix_len == 127) /* RFC 6164 */
+		return;
 	ipv6_addr_prefix(&addr, &ifp->addr, ifp->prefix_len);
 	if (ipv6_addr_any(&addr))
 		return;

net/l2tp/l2tp_eth.c

@@ -103,7 +103,7 @@ static struct net_device_ops l2tp_eth_netdev_ops = {
 static void l2tp_eth_dev_setup(struct net_device *dev)
 {
 	ether_setup(dev);
-
+	dev->priv_flags &= ~IFF_TX_SKB_SHARING;
 	dev->netdev_ops		= &l2tp_eth_netdev_ops;
 	dev->destructor		= free_netdev;
 }

net/mac80211/iface.c

@@ -698,6 +698,7 @@ static const struct net_device_ops ieee80211_monitorif_ops = {
 static void ieee80211_if_setup(struct net_device *dev)
 {
 	ether_setup(dev);
+	dev->priv_flags &= ~IFF_TX_SKB_SHARING;
 	dev->netdev_ops = &ieee80211_dataif_ops;
 	dev->destructor = free_netdev;
 }

net/socket.c

@@ -580,7 +580,7 @@ int sock_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
 }
 EXPORT_SYMBOL(sock_sendmsg);
 
-int sock_sendmsg_nosec(struct socket *sock, struct msghdr *msg, size_t size)
+static int sock_sendmsg_nosec(struct socket *sock, struct msghdr *msg, size_t size)
 {
 	struct kiocb iocb;
 	struct sock_iocb siocb;

net/wireless/reg.c

@@ -903,7 +903,7 @@ static bool ignore_reg_update(struct wiphy *wiphy,
 	    initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE &&
 	    !is_world_regdom(last_request->alpha2)) {
 		REG_DBG_PRINT("Ignoring regulatory request %s "
-			      "since the driver requires its own regulaotry "
+			      "since the driver requires its own regulatory "
 			      "domain to be set first",
 			      reg_initiator_name(initiator));
 		return true;
@@ -1125,12 +1125,13 @@ void wiphy_update_regulatory(struct wiphy *wiphy,
 	enum ieee80211_band band;
 
 	if (ignore_reg_update(wiphy, initiator))
-		goto out;
+		return;
+
 	for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
 		if (wiphy->bands[band])
 			handle_band(wiphy, band, initiator);
 	}
-out:
+
 	reg_process_beacons(wiphy);
 	reg_process_ht_flags(wiphy);
 	if (wiphy->reg_notifier)