36 files changed, 358 insertions, 245 deletions

diff --git a/drivers/isdn/i4l/isdn_net.c b/drivers/isdn/i4l/isdn_net.c
index 48e9cc0369b1..1f73d7f7e024 100644
--- a/drivers/isdn/i4l/isdn_net.c
+++ b/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;
 
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index b7622c3745fa..e1eca2ab505e 100644
--- a/drivers/net/Makefile
+++ b/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/
diff --git a/drivers/net/acenic.c b/drivers/net/acenic.c
index 536038b22710..31798f5f5d06 100644
--- a/drivers/net/acenic.c
+++ b/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 {
diff --git a/drivers/net/acenic.h b/drivers/net/acenic.h
index f67dc9b0eb80..51c486cfbb8c 100644
--- a/drivers/net/acenic.h
+++ b/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);
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 02842d05c11f..38a83acd502e 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/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)) {
diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c
index b60835f58650..2dfb4bf90087 100644
--- a/drivers/net/bonding/bond_sysfs.c
+++ b/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);
diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c
index e64cd9ceac3f..e55df308a3af 100644
--- a/drivers/net/forcedeth.c
+++ b/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",
diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c
index 835cd2588148..2659daad783d 100644
--- a/drivers/net/gianfar.c
+++ b/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);
diff --git a/drivers/net/ifb.c b/drivers/net/ifb.c
index 6e82dd32e806..46b5f5fd686b 100644
--- a/drivers/net/ifb.c
+++ b/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);
 }
 
diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
index ba631fcece34..05172c39a0ce 100644
--- a/drivers/net/macvlan.c
+++ b/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,
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 803576568154..dc3fbf61910b 100644
--- a/drivers/net/tg3.c
+++ b/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) ||
diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h
index 691539ba17b3..2ea456dd5880 100644
--- a/drivers/net/tg3.h
+++ b/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 */
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 9a6b3824da14..71f3d1a35b74 100644
--- a/drivers/net/tun.c
+++ b/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);
 
diff --git a/drivers/net/usb/asix.c b/drivers/net/usb/asix.c
index 52502883523e..c5c4b4def7fb 100644
--- a/drivers/net/usb/asix.c
+++ b/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;
diff --git a/drivers/net/veth.c b/drivers/net/veth.c
index 7f78db7bd68d..5b23767ea817 100644
--- a/drivers/net/veth.c
+++ b/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;
diff --git a/drivers/net/wan/hdlc_fr.c b/drivers/net/wan/hdlc_fr.c
index b25c9229a6a9..eb2028187fbe 100644
--- a/drivers/net/wan/hdlc_fr.c
+++ b/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) {
diff --git a/drivers/net/wireless/airo.c b/drivers/net/wireless/airo.c
index 55cf71fbffe3..e1b3e3c134fd 100644
--- a/drivers/net/wireless/airo.c
+++ b/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);
 
diff --git a/drivers/net/wireless/b43/Kconfig b/drivers/net/wireless/b43/Kconfig
index d2293dcc117f..3cab843afb05 100644
--- a/drivers/net/wireless/b43/Kconfig
+++ b/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
diff --git a/drivers/net/wireless/b43/bus.c b/drivers/net/wireless/b43/bus.c
index 64c3f65ff8c0..05f6c7bff6ab 100644
--- a/drivers/net/wireless/b43/bus.c
+++ b/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
         }
 }
diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index 032d46674f6b..26f1ab840cc7 100644
--- a/drivers/net/wireless/b43/main.c
+++ b/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);
         }
 }
 
diff --git a/drivers/net/wireless/hostap/hostap_main.c b/drivers/net/wireless/hostap/hostap_main.c
index d5084829c9e5..89a116fba1de 100644
--- a/drivers/net/wireless/hostap/hostap_main.c
+++ b/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) {
diff --git a/drivers/nfc/pn533.c b/drivers/nfc/pn533.c
index 037231540719..c77e0543e502 100644
--- a/drivers/nfc/pn533.c
+++ b/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 = {
diff --git a/drivers/staging/ath6kl/os/linux/ar6000_drv.c b/drivers/staging/ath6kl/os/linux/ar6000_drv.c
index 499b7a90e941..32ee39ad00df 100644
--- a/drivers/staging/ath6kl/os/linux/ar6000_drv.c
+++ b/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"));
diff --git a/include/linux/if.h b/include/linux/if.h
index 3bc63e6a02f7..03489ca92ded 100644
--- a/include/linux/if.h
+++ b/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
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 2ed0b6cf11c5..ddee79bb8f15 100644
--- a/include/linux/netdevice.h
+++ b/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)
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index 934e221c1d07..9d40a071d038 100644
--- a/net/8021q/vlan_dev.c
+++ b/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;
diff --git a/net/bluetooth/bnep/netdev.c b/net/bluetooth/bnep/netdev.c
index 8c100c9dae28..d4f5dff7c955 100644
--- a/net/bluetooth/bnep/netdev.c
+++ b/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;
diff --git a/net/core/dev.c b/net/core/dev.c
index 9444c5cb4137..17d67b579beb 100644
--- a/net/core/dev.c
+++ b/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)
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index f76079cd750c..e35a6fbb8110 100644
--- a/net/core/pktgen.c
+++ b/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);
diff --git a/net/ethernet/eth.c b/net/ethernet/eth.c
index 5cffb63f481a..27997d35ebd3 100644
--- a/net/ethernet/eth.c
+++ b/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);
 
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index 37b3c188d8b3..bc19bd06dd00 100644
--- a/net/ipv4/devinet.c
+++ b/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 */
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index a06c53c14d84..a55500cc0b29 100644
--- a/net/ipv6/addrconf.c
+++ b/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;
diff --git a/net/l2tp/l2tp_eth.c b/net/l2tp/l2tp_eth.c
index a8193f52c13c..d2726a74597d 100644
--- a/net/l2tp/l2tp_eth.c
+++ b/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;
 }
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index cd5fb40d3fd4..556e7e6ddf0a 100644
--- a/net/mac80211/iface.c
+++ b/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;
 }
diff --git a/net/socket.c b/net/socket.c
index 26ed35c7751e..b1cbbcd92558 100644
--- a/net/socket.c
+++ b/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;
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 1ad0f39fe091..02751dbc5a97 100644
--- a/net/wireless/reg.c
+++ b/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)