1 files changed, 513 insertions, 175 deletions

diff --git a/net/core/dev.c b/net/core/dev.c
index e2e9e4af3ace..576a61574a93 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -126,6 +126,7 @@
 #include <linux/in.h>
 #include <linux/jhash.h>
 #include <linux/random.h>
+#include <trace/events/napi.h>
 
 #include "net-sysfs.h"
 
@@ -268,7 +269,8 @@ static const unsigned short netdev_lock_type[] =
          ARPHRD_IRDA, ARPHRD_FCPP, ARPHRD_FCAL, ARPHRD_FCPL,
          ARPHRD_FCFABRIC, ARPHRD_IEEE802_TR, ARPHRD_IEEE80211,
          ARPHRD_IEEE80211_PRISM, ARPHRD_IEEE80211_RADIOTAP, ARPHRD_PHONET,
-         ARPHRD_PHONET_PIPE, ARPHRD_VOID, ARPHRD_NONE};
+         ARPHRD_PHONET_PIPE, ARPHRD_IEEE802154, ARPHRD_IEEE802154_PHY,
+         ARPHRD_VOID, ARPHRD_NONE};
 
 static const char *netdev_lock_name[] =
         {"_xmit_NETROM", "_xmit_ETHER", "_xmit_EETHER", "_xmit_AX25",
@@ -285,7 +287,8 @@ static const char *netdev_lock_name[] =
          "_xmit_IRDA", "_xmit_FCPP", "_xmit_FCAL", "_xmit_FCPL",
          "_xmit_FCFABRIC", "_xmit_IEEE802_TR", "_xmit_IEEE80211",
          "_xmit_IEEE80211_PRISM", "_xmit_IEEE80211_RADIOTAP", "_xmit_PHONET",
-         "_xmit_PHONET_PIPE", "_xmit_VOID", "_xmit_NONE"};
+         "_xmit_PHONET_PIPE", "_xmit_IEEE802154", "_xmit_IEEE802154_PHY",
+         "_xmit_VOID", "_xmit_NONE"};
 
 static struct lock_class_key netdev_xmit_lock_key[ARRAY_SIZE(netdev_lock_type)];
 static struct lock_class_key netdev_addr_lock_key[ARRAY_SIZE(netdev_lock_type)];
@@ -1047,7 +1050,7 @@ void dev_load(struct net *net, const char *name)
 int dev_open(struct net_device *dev)
 {
         const struct net_device_ops *ops = dev->netdev_ops;
-        int ret = 0;
+        int ret;
 
         ASSERT_RTNL();
 
@@ -1064,6 +1067,11 @@ int dev_open(struct net_device *dev)
         if (!netif_device_present(dev))
                 return -ENODEV;
 
+        ret = call_netdevice_notifiers(NETDEV_PRE_UP, dev);
+        ret = notifier_to_errno(ret);
+        if (ret)
+                return ret;
+
         /*
          *      Call device private open method
          */
@@ -1688,7 +1696,16 @@ int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev,
                                 goto gso;
                 }
 
+                /*
+                 * If device doesnt need skb->dst, release it right now while
+                 * its hot in this cpu cache
+                 */
+                if (dev->priv_flags & IFF_XMIT_DST_RELEASE)
+                        skb_dst_drop(skb);
+
                 rc = ops->ndo_start_xmit(skb, dev);
+                if (rc == 0)
+                        txq_trans_update(txq);
                 /*
                  * TODO: if skb_orphan() was called by
                  * dev->hard_start_xmit() (for example, the unmodified
@@ -1718,6 +1735,7 @@ gso:
                         skb->next = nskb;
                         return rc;
                 }
+                txq_trans_update(txq);
                 if (unlikely(netif_tx_queue_stopped(txq) && skb->next))
                         return NETDEV_TX_BUSY;
         } while (skb->next);
@@ -1735,8 +1753,12 @@ u16 skb_tx_hash(const struct net_device *dev, const struct sk_buff *skb)
 {
         u32 hash;
 
-        if (skb_rx_queue_recorded(skb))
-                return skb_get_rx_queue(skb) % dev->real_num_tx_queues;
+        if (skb_rx_queue_recorded(skb)) {
+                hash = skb_get_rx_queue(skb);
+                while (unlikely (hash >= dev->real_num_tx_queues))
+                        hash -= dev->real_num_tx_queues;
+                return hash;
+        }
 
         if (skb->sk && skb->sk->sk_hash)
                 hash = skb->sk->sk_hash;
@@ -1800,7 +1822,7 @@ int dev_queue_xmit(struct sk_buff *skb)
         if (netif_needs_gso(dev, skb))
                 goto gso;
 
-        if (skb_shinfo(skb)->frag_list &&
+        if (skb_has_frags(skb) &&
             !(dev->features & NETIF_F_FRAGLIST) &&
             __skb_linearize(skb))
                 goto out_kfree_skb;
@@ -2049,11 +2071,13 @@ static inline int deliver_skb(struct sk_buff *skb,
 }
 
 #if defined(CONFIG_BRIDGE) || defined (CONFIG_BRIDGE_MODULE)
-/* These hooks defined here for ATM */
-struct net_bridge;
-struct net_bridge_fdb_entry *(*br_fdb_get_hook)(struct net_bridge *br,
-                                                unsigned char *addr);
-void (*br_fdb_put_hook)(struct net_bridge_fdb_entry *ent) __read_mostly;
+
+#if defined(CONFIG_ATM_LANE) || defined(CONFIG_ATM_LANE_MODULE)
+/* This hook is defined here for ATM LANE */
+int (*br_fdb_test_addr_hook)(struct net_device *dev,
+                             unsigned char *addr) __read_mostly;
+EXPORT_SYMBOL(br_fdb_test_addr_hook);
+#endif
 
 /*
  * If bridge module is loaded call bridging hook.
@@ -2061,6 +2085,8 @@ void (*br_fdb_put_hook)(struct net_bridge_fdb_entry *ent) __read_mostly;
  */
 struct sk_buff *(*br_handle_frame_hook)(struct net_bridge_port *p,
                                         struct sk_buff *skb) __read_mostly;
+EXPORT_SYMBOL(br_handle_frame_hook);
+
 static inline struct sk_buff *handle_bridge(struct sk_buff *skb,
                                             struct packet_type **pt_prev, int *ret,
                                             struct net_device *orig_dev)
@@ -2374,26 +2400,6 @@ void napi_gro_flush(struct napi_struct *napi)
 }
 EXPORT_SYMBOL(napi_gro_flush);
 
-void *skb_gro_header(struct sk_buff *skb, unsigned int hlen)
-{
-        unsigned int offset = skb_gro_offset(skb);
-
-        hlen += offset;
-        if (hlen <= skb_headlen(skb))
-                return skb->data + offset;
-
-        if (unlikely(!skb_shinfo(skb)->nr_frags ||
-                     skb_shinfo(skb)->frags[0].size <=
-                     hlen - skb_headlen(skb) ||
-                     PageHighMem(skb_shinfo(skb)->frags[0].page)))
-                return pskb_may_pull(skb, hlen) ? skb->data + offset : NULL;
-
-        return page_address(skb_shinfo(skb)->frags[0].page) +
-               skb_shinfo(skb)->frags[0].page_offset +
-               offset - skb_headlen(skb);
-}
-EXPORT_SYMBOL(skb_gro_header);
-
 int dev_gro_receive(struct napi_struct *napi, struct sk_buff *skb)
 {
         struct sk_buff **pp = NULL;
@@ -2407,7 +2413,7 @@ int dev_gro_receive(struct napi_struct *napi, struct sk_buff *skb)
         if (!(skb->dev->features & NETIF_F_GRO))
                 goto normal;
 
-        if (skb_is_gso(skb) || skb_shinfo(skb)->frag_list)
+        if (skb_is_gso(skb) || skb_has_frags(skb))
                 goto normal;
 
         rcu_read_lock();
@@ -2456,10 +2462,25 @@ int dev_gro_receive(struct napi_struct *napi, struct sk_buff *skb)
         ret = GRO_HELD;
 
 pull:
-        if (unlikely(!pskb_may_pull(skb, skb_gro_offset(skb)))) {
-                if (napi->gro_list == skb)
-                        napi->gro_list = skb->next;
-                ret = GRO_DROP;
+        if (skb_headlen(skb) < skb_gro_offset(skb)) {
+                int grow = skb_gro_offset(skb) - skb_headlen(skb);
+
+                BUG_ON(skb->end - skb->tail < grow);
+
+                memcpy(skb_tail_pointer(skb), NAPI_GRO_CB(skb)->frag0, grow);
+
+                skb->tail += grow;
+                skb->data_len -= grow;
+
+                skb_shinfo(skb)->frags[0].page_offset += grow;
+                skb_shinfo(skb)->frags[0].size -= grow;
+
+                if (unlikely(!skb_shinfo(skb)->frags[0].size)) {
+                        put_page(skb_shinfo(skb)->frags[0].page);
+                        memmove(skb_shinfo(skb)->frags,
+                                skb_shinfo(skb)->frags + 1,
+                                --skb_shinfo(skb)->nr_frags);
+                }
         }
 
 ok:
@@ -2509,6 +2530,22 @@ int napi_skb_finish(int ret, struct sk_buff *skb)
 }
 EXPORT_SYMBOL(napi_skb_finish);
 
+void skb_gro_reset_offset(struct sk_buff *skb)
+{
+        NAPI_GRO_CB(skb)->data_offset = 0;
+        NAPI_GRO_CB(skb)->frag0 = NULL;
+        NAPI_GRO_CB(skb)->frag0_len = 0;
+
+        if (skb->mac_header == skb->tail &&
+            !PageHighMem(skb_shinfo(skb)->frags[0].page)) {
+                NAPI_GRO_CB(skb)->frag0 =
+                        page_address(skb_shinfo(skb)->frags[0].page) +
+                        skb_shinfo(skb)->frags[0].page_offset;
+                NAPI_GRO_CB(skb)->frag0_len = skb_shinfo(skb)->frags[0].size;
+        }
+}
+EXPORT_SYMBOL(skb_gro_reset_offset);
+
 int napi_gro_receive(struct napi_struct *napi, struct sk_buff *skb)
 {
         skb_gro_reset_offset(skb);
@@ -2526,16 +2563,10 @@ void napi_reuse_skb(struct napi_struct *napi, struct sk_buff *skb)
 }
 EXPORT_SYMBOL(napi_reuse_skb);
 
-struct sk_buff *napi_fraginfo_skb(struct napi_struct *napi,
-                                  struct napi_gro_fraginfo *info)
+struct sk_buff *napi_get_frags(struct napi_struct *napi)
 {
         struct net_device *dev = napi->dev;
         struct sk_buff *skb = napi->skb;
-        struct ethhdr *eth;
-        skb_frag_t *frag;
-        int i;
-
-        napi->skb = NULL;
 
         if (!skb) {
                 skb = netdev_alloc_skb(dev, GRO_MAX_HEAD + NET_IP_ALIGN);
@@ -2543,47 +2574,14 @@ struct sk_buff *napi_fraginfo_skb(struct napi_struct *napi,
                         goto out;
 
                 skb_reserve(skb, NET_IP_ALIGN);
-        }
 
-        BUG_ON(info->nr_frags > MAX_SKB_FRAGS);
-        frag = info->frags;
-
-        for (i = 0; i < info->nr_frags; i++) {
-                skb_fill_page_desc(skb, i, frag->page, frag->page_offset,
-                                   frag->size);
-                frag++;
-        }
-        skb_shinfo(skb)->nr_frags = info->nr_frags;
-
-        skb->data_len = info->len;
-        skb->len += info->len;
-        skb->truesize += info->len;
-
-        skb_reset_mac_header(skb);
-        skb_gro_reset_offset(skb);
-
-        eth = skb_gro_header(skb, sizeof(*eth));
-        if (!eth) {
-                napi_reuse_skb(napi, skb);
-                skb = NULL;
-                goto out;
+                napi->skb = skb;
         }
 
-        skb_gro_pull(skb, sizeof(*eth));
-
-        /*
-         * This works because the only protocols we care about don't require
-         * special handling.  We'll fix it up properly at the end.
-         */
-        skb->protocol = eth->h_proto;
-
-        skb->ip_summed = info->ip_summed;
-        skb->csum = info->csum;
-
 out:
         return skb;
 }
-EXPORT_SYMBOL(napi_fraginfo_skb);
+EXPORT_SYMBOL(napi_get_frags);
 
 int napi_frags_finish(struct napi_struct *napi, struct sk_buff *skb, int ret)
 {
@@ -2613,9 +2611,46 @@ int napi_frags_finish(struct napi_struct *napi, struct sk_buff *skb, int ret)
 }
 EXPORT_SYMBOL(napi_frags_finish);
 
-int napi_gro_frags(struct napi_struct *napi, struct napi_gro_fraginfo *info)
+struct sk_buff *napi_frags_skb(struct napi_struct *napi)
 {
-        struct sk_buff *skb = napi_fraginfo_skb(napi, info);
+        struct sk_buff *skb = napi->skb;
+        struct ethhdr *eth;
+        unsigned int hlen;
+        unsigned int off;
+
+        napi->skb = NULL;
+
+        skb_reset_mac_header(skb);
+        skb_gro_reset_offset(skb);
+
+        off = skb_gro_offset(skb);
+        hlen = off + sizeof(*eth);
+        eth = skb_gro_header_fast(skb, off);
+        if (skb_gro_header_hard(skb, hlen)) {
+                eth = skb_gro_header_slow(skb, hlen, off);
+                if (unlikely(!eth)) {
+                        napi_reuse_skb(napi, skb);
+                        skb = NULL;
+                        goto out;
+                }
+        }
+
+        skb_gro_pull(skb, sizeof(*eth));
+
+        /*
+         * This works because the only protocols we care about don't require
+         * special handling.  We'll fix it up properly at the end.
+         */
+        skb->protocol = eth->h_proto;
+
+out:
+        return skb;
+}
+EXPORT_SYMBOL(napi_frags_skb);
+
+int napi_gro_frags(struct napi_struct *napi)
+{
+        struct sk_buff *skb = napi_frags_skb(napi);
 
         if (!skb)
                 return NET_RX_DROP;
@@ -2719,7 +2754,7 @@ void netif_napi_del(struct napi_struct *napi)
         struct sk_buff *skb, *next;
 
         list_del_init(&napi->dev_list);
-        kfree_skb(napi->skb);
+        napi_free_frags(napi);
 
         for (skb = napi->gro_list; skb; skb = next) {
                 next = skb->next;
@@ -2773,8 +2808,10 @@ static void net_rx_action(struct softirq_action *h)
                  * accidently calling ->poll() when NAPI is not scheduled.
                  */
                 work = 0;
-                if (test_bit(NAPI_STATE_SCHED, &n->state))
+                if (test_bit(NAPI_STATE_SCHED, &n->state)) {
                         work = n->poll(n, weight);
+                        trace_napi_poll(n);
+                }
 
                 WARN_ON_ONCE(work > weight);
 
@@ -3444,6 +3481,319 @@ void dev_set_rx_mode(struct net_device *dev)
         netif_addr_unlock_bh(dev);
 }
 
+/* hw addresses list handling functions */
+
+static int __hw_addr_add(struct list_head *list, int *delta,
+                         unsigned char *addr, int addr_len,
+                         unsigned char addr_type)
+{
+        struct netdev_hw_addr *ha;
+        int alloc_size;
+
+        if (addr_len > MAX_ADDR_LEN)
+                return -EINVAL;
+
+        list_for_each_entry(ha, list, list) {
+                if (!memcmp(ha->addr, addr, addr_len) &&
+                    ha->type == addr_type) {
+                        ha->refcount++;
+                        return 0;
+                }
+        }
+
+
+        alloc_size = sizeof(*ha);
+        if (alloc_size < L1_CACHE_BYTES)
+                alloc_size = L1_CACHE_BYTES;
+        ha = kmalloc(alloc_size, GFP_ATOMIC);
+        if (!ha)
+                return -ENOMEM;
+        memcpy(ha->addr, addr, addr_len);
+        ha->type = addr_type;
+        ha->refcount = 1;
+        ha->synced = false;
+        list_add_tail_rcu(&ha->list, list);
+        if (delta)
+                (*delta)++;
+        return 0;
+}
+
+static void ha_rcu_free(struct rcu_head *head)
+{
+        struct netdev_hw_addr *ha;
+
+        ha = container_of(head, struct netdev_hw_addr, rcu_head);
+        kfree(ha);
+}
+
+static int __hw_addr_del(struct list_head *list, int *delta,
+                         unsigned char *addr, int addr_len,
+                         unsigned char addr_type)
+{
+        struct netdev_hw_addr *ha;
+
+        list_for_each_entry(ha, list, list) {
+                if (!memcmp(ha->addr, addr, addr_len) &&
+                    (ha->type == addr_type || !addr_type)) {
+                        if (--ha->refcount)
+                                return 0;
+                        list_del_rcu(&ha->list);
+                        call_rcu(&ha->rcu_head, ha_rcu_free);
+                        if (delta)
+                                (*delta)--;
+                        return 0;
+                }
+        }
+        return -ENOENT;
+}
+
+static int __hw_addr_add_multiple(struct list_head *to_list, int *to_delta,
+                                  struct list_head *from_list, int addr_len,
+                                  unsigned char addr_type)
+{
+        int err;
+        struct netdev_hw_addr *ha, *ha2;
+        unsigned char type;
+
+        list_for_each_entry(ha, from_list, list) {
+                type = addr_type ? addr_type : ha->type;
+                err = __hw_addr_add(to_list, to_delta, ha->addr,
+                                    addr_len, type);
+                if (err)
+                        goto unroll;
+        }
+        return 0;
+
+unroll:
+        list_for_each_entry(ha2, from_list, list) {
+                if (ha2 == ha)
+                        break;
+                type = addr_type ? addr_type : ha2->type;
+                __hw_addr_del(to_list, to_delta, ha2->addr,
+                              addr_len, type);
+        }
+        return err;
+}
+
+static void __hw_addr_del_multiple(struct list_head *to_list, int *to_delta,
+                                   struct list_head *from_list, int addr_len,
+                                   unsigned char addr_type)
+{
+        struct netdev_hw_addr *ha;
+        unsigned char type;
+
+        list_for_each_entry(ha, from_list, list) {
+                type = addr_type ? addr_type : ha->type;
+                __hw_addr_del(to_list, to_delta, ha->addr,
+                              addr_len, addr_type);
+        }
+}
+
+static int __hw_addr_sync(struct list_head *to_list, int *to_delta,
+                          struct list_head *from_list, int *from_delta,
+                          int addr_len)
+{
+        int err = 0;
+        struct netdev_hw_addr *ha, *tmp;
+
+        list_for_each_entry_safe(ha, tmp, from_list, list) {
+                if (!ha->synced) {
+                        err = __hw_addr_add(to_list, to_delta, ha->addr,
+                                            addr_len, ha->type);
+                        if (err)
+                                break;
+                        ha->synced = true;
+                        ha->refcount++;
+                } else if (ha->refcount == 1) {
+                        __hw_addr_del(to_list, to_delta, ha->addr,
+                                      addr_len, ha->type);
+                        __hw_addr_del(from_list, from_delta, ha->addr,
+                                      addr_len, ha->type);
+                }
+        }
+        return err;
+}
+
+static void __hw_addr_unsync(struct list_head *to_list, int *to_delta,
+                             struct list_head *from_list, int *from_delta,
+                             int addr_len)
+{
+        struct netdev_hw_addr *ha, *tmp;
+
+        list_for_each_entry_safe(ha, tmp, from_list, list) {
+                if (ha->synced) {
+                        __hw_addr_del(to_list, to_delta, ha->addr,
+                                      addr_len, ha->type);
+                        ha->synced = false;
+                        __hw_addr_del(from_list, from_delta, ha->addr,
+                                      addr_len, ha->type);
+                }
+        }
+}
+
+
+static void __hw_addr_flush(struct list_head *list)
+{
+        struct netdev_hw_addr *ha, *tmp;
+
+        list_for_each_entry_safe(ha, tmp, list, list) {
+                list_del_rcu(&ha->list);
+                call_rcu(&ha->rcu_head, ha_rcu_free);
+        }
+}
+
+/* Device addresses handling functions */
+
+static void dev_addr_flush(struct net_device *dev)
+{
+        /* rtnl_mutex must be held here */
+
+        __hw_addr_flush(&dev->dev_addr_list);
+        dev->dev_addr = NULL;
+}
+
+static int dev_addr_init(struct net_device *dev)
+{
+        unsigned char addr[MAX_ADDR_LEN];
+        struct netdev_hw_addr *ha;
+        int err;
+
+        /* rtnl_mutex must be held here */
+
+        INIT_LIST_HEAD(&dev->dev_addr_list);
+        memset(addr, 0, sizeof(addr));
+        err = __hw_addr_add(&dev->dev_addr_list, NULL, addr, sizeof(addr),
+                            NETDEV_HW_ADDR_T_LAN);
+        if (!err) {
+                /*
+                 * Get the first (previously created) address from the list
+                 * and set dev_addr pointer to this location.
+                 */
+                ha = list_first_entry(&dev->dev_addr_list,
+                                      struct netdev_hw_addr, list);
+                dev->dev_addr = ha->addr;
+        }
+        return err;
+}
+
+/**
+ *      dev_addr_add    - Add a device address
+ *      @dev: device
+ *      @addr: address to add
+ *      @addr_type: address type
+ *
+ *      Add a device address to the device or increase the reference count if
+ *      it already exists.
+ *
+ *      The caller must hold the rtnl_mutex.
+ */
+int dev_addr_add(struct net_device *dev, unsigned char *addr,
+                 unsigned char addr_type)
+{
+        int err;
+
+        ASSERT_RTNL();
+
+        err = __hw_addr_add(&dev->dev_addr_list, NULL, addr, dev->addr_len,
+                            addr_type);
+        if (!err)
+                call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
+        return err;
+}
+EXPORT_SYMBOL(dev_addr_add);
+
+/**
+ *      dev_addr_del    - Release a device address.
+ *      @dev: device
+ *      @addr: address to delete
+ *      @addr_type: address type
+ *
+ *      Release reference to a device address and remove it from the device
+ *      if the reference count drops to zero.
+ *
+ *      The caller must hold the rtnl_mutex.
+ */
+int dev_addr_del(struct net_device *dev, unsigned char *addr,
+                 unsigned char addr_type)
+{
+        int err;
+        struct netdev_hw_addr *ha;
+
+        ASSERT_RTNL();
+
+        /*
+         * We can not remove the first address from the list because
+         * dev->dev_addr points to that.
+         */
+        ha = list_first_entry(&dev->dev_addr_list, struct netdev_hw_addr, list);
+        if (ha->addr == dev->dev_addr && ha->refcount == 1)
+                return -ENOENT;
+
+        err = __hw_addr_del(&dev->dev_addr_list, NULL, addr, dev->addr_len,
+                            addr_type);
+        if (!err)
+                call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
+        return err;
+}
+EXPORT_SYMBOL(dev_addr_del);
+
+/**
+ *      dev_addr_add_multiple   - Add device addresses from another device
+ *      @to_dev: device to which addresses will be added
+ *      @from_dev: device from which addresses will be added
+ *      @addr_type: address type - 0 means type will be used from from_dev
+ *
+ *      Add device addresses of the one device to another.
+ **
+ *      The caller must hold the rtnl_mutex.
+ */
+int dev_addr_add_multiple(struct net_device *to_dev,
+                          struct net_device *from_dev,
+                          unsigned char addr_type)
+{
+        int err;
+
+        ASSERT_RTNL();
+
+        if (from_dev->addr_len != to_dev->addr_len)
+                return -EINVAL;
+        err = __hw_addr_add_multiple(&to_dev->dev_addr_list, NULL,
+                                     &from_dev->dev_addr_list,
+                                     to_dev->addr_len, addr_type);
+        if (!err)
+                call_netdevice_notifiers(NETDEV_CHANGEADDR, to_dev);
+        return err;
+}
+EXPORT_SYMBOL(dev_addr_add_multiple);
+
+/**
+ *      dev_addr_del_multiple   - Delete device addresses by another device
+ *      @to_dev: device where the addresses will be deleted
+ *      @from_dev: device by which addresses the addresses will be deleted
+ *      @addr_type: address type - 0 means type will used from from_dev
+ *
+ *      Deletes addresses in to device by the list of addresses in from device.
+ *
+ *      The caller must hold the rtnl_mutex.
+ */
+int dev_addr_del_multiple(struct net_device *to_dev,
+                          struct net_device *from_dev,
+                          unsigned char addr_type)
+{
+        ASSERT_RTNL();
+
+        if (from_dev->addr_len != to_dev->addr_len)
+                return -EINVAL;
+        __hw_addr_del_multiple(&to_dev->dev_addr_list, NULL,
+                               &from_dev->dev_addr_list,
+                               to_dev->addr_len, addr_type);
+        call_netdevice_notifiers(NETDEV_CHANGEADDR, to_dev);
+        return 0;
+}
+EXPORT_SYMBOL(dev_addr_del_multiple);
+
+/* unicast and multicast addresses handling functions */
+
 int __dev_addr_delete(struct dev_addr_list **list, int *count,
                       void *addr, int alen, int glbl)
 {
@@ -3506,24 +3856,22 @@ int __dev_addr_add(struct dev_addr_list **list, int *count,
  *      dev_unicast_delete      - Release secondary unicast address.
  *      @dev: device
  *      @addr: address to delete
- *      @alen: length of @addr
  *
  *      Release reference to a secondary unicast address and remove it
  *      from the device if the reference count drops to zero.
  *
  *      The caller must hold the rtnl_mutex.
  */
-int dev_unicast_delete(struct net_device *dev, void *addr, int alen)
+int dev_unicast_delete(struct net_device *dev, void *addr)
 {
         int err;
 
         ASSERT_RTNL();
 
-        netif_addr_lock_bh(dev);
-        err = __dev_addr_delete(&dev->uc_list, &dev->uc_count, addr, alen, 0);
+        err = __hw_addr_del(&dev->uc_list, &dev->uc_count, addr,
+                            dev->addr_len, NETDEV_HW_ADDR_T_UNICAST);
         if (!err)
                 __dev_set_rx_mode(dev);
-        netif_addr_unlock_bh(dev);
         return err;
 }
 EXPORT_SYMBOL(dev_unicast_delete);
@@ -3532,24 +3880,22 @@ EXPORT_SYMBOL(dev_unicast_delete);
  *      dev_unicast_add         - add a secondary unicast address
  *      @dev: device
  *      @addr: address to add
- *      @alen: length of @addr
  *
  *      Add a secondary unicast address to the device or increase
  *      the reference count if it already exists.
  *
  *      The caller must hold the rtnl_mutex.
  */
-int dev_unicast_add(struct net_device *dev, void *addr, int alen)
+int dev_unicast_add(struct net_device *dev, void *addr)
 {
         int err;
 
         ASSERT_RTNL();
 
-        netif_addr_lock_bh(dev);
-        err = __dev_addr_add(&dev->uc_list, &dev->uc_count, addr, alen, 0);
+        err = __hw_addr_add(&dev->uc_list, &dev->uc_count, addr,
+                            dev->addr_len, NETDEV_HW_ADDR_T_UNICAST);
         if (!err)
                 __dev_set_rx_mode(dev);
-        netif_addr_unlock_bh(dev);
         return err;
 }
 EXPORT_SYMBOL(dev_unicast_add);
@@ -3606,8 +3952,7 @@ void __dev_addr_unsync(struct dev_addr_list **to, int *to_count,
  *      @from: source device
  *
  *      Add newly added addresses to the destination device and release
- *      addresses that have no users left. The source device must be
- *      locked by netif_tx_lock_bh.
+ *      addresses that have no users left.
  *
  *      This function is intended to be called from the dev->set_rx_mode
  *      function of layered software devices.
@@ -3616,12 +3961,15 @@ int dev_unicast_sync(struct net_device *to, struct net_device *from)
 {
         int err = 0;
 
-        netif_addr_lock_bh(to);
-        err = __dev_addr_sync(&to->uc_list, &to->uc_count,
-                              &from->uc_list, &from->uc_count);
+        ASSERT_RTNL();
+
+        if (to->addr_len != from->addr_len)
+                return -EINVAL;
+
+        err = __hw_addr_sync(&to->uc_list, &to->uc_count,
+                             &from->uc_list, &from->uc_count, to->addr_len);
         if (!err)
                 __dev_set_rx_mode(to);
-        netif_addr_unlock_bh(to);
         return err;
 }
 EXPORT_SYMBOL(dev_unicast_sync);
@@ -3637,18 +3985,33 @@ EXPORT_SYMBOL(dev_unicast_sync);
  */
 void dev_unicast_unsync(struct net_device *to, struct net_device *from)
 {
-        netif_addr_lock_bh(from);
-        netif_addr_lock(to);
+        ASSERT_RTNL();
 
-        __dev_addr_unsync(&to->uc_list, &to->uc_count,
-                          &from->uc_list, &from->uc_count);
-        __dev_set_rx_mode(to);
+        if (to->addr_len != from->addr_len)
+                return;
 
-        netif_addr_unlock(to);
-        netif_addr_unlock_bh(from);
+        __hw_addr_unsync(&to->uc_list, &to->uc_count,
+                         &from->uc_list, &from->uc_count, to->addr_len);
+        __dev_set_rx_mode(to);
 }
 EXPORT_SYMBOL(dev_unicast_unsync);
 
+static void dev_unicast_flush(struct net_device *dev)
+{
+        /* rtnl_mutex must be held here */
+
+        __hw_addr_flush(&dev->uc_list);
+        dev->uc_count = 0;
+}
+
+static void dev_unicast_init(struct net_device *dev)
+{
+        /* rtnl_mutex must be held here */
+
+        INIT_LIST_HEAD(&dev->uc_list);
+}
+
+
 static void __dev_addr_discard(struct dev_addr_list **list)
 {
         struct dev_addr_list *tmp;
@@ -3667,9 +4030,6 @@ static void dev_addr_discard(struct net_device *dev)
 {
         netif_addr_lock_bh(dev);
 
-        __dev_addr_discard(&dev->uc_list);
-        dev->uc_count = 0;
-
         __dev_addr_discard(&dev->mc_list);
         dev->mc_count = 0;
 
@@ -3853,7 +4213,7 @@ static int dev_ifsioc_locked(struct net *net, struct ifreq *ifr, unsigned int cm
 
         switch (cmd) {
                 case SIOCGIFFLAGS:      /* Get interface flags */
-                        ifr->ifr_flags = dev_get_flags(dev);
+                        ifr->ifr_flags = (short) dev_get_flags(dev);
                         return 0;
 
                 case SIOCGIFMETRIC:     /* Get the metric on the interface
@@ -4262,6 +4622,7 @@ static void rollback_registered(struct net_device *dev)
         /*
          *      Flush the unicast and multicast chains
          */
+        dev_unicast_flush(dev);
         dev_addr_discard(dev);
 
         if (dev->netdev_ops->ndo_uninit)
@@ -4333,39 +4694,6 @@ unsigned long netdev_fix_features(unsigned long features, const char *name)
 }
 EXPORT_SYMBOL(netdev_fix_features);
 
-/* Some devices need to (re-)set their netdev_ops inside
- * ->init() or similar.  If that happens, we have to setup
- * the compat pointers again.
- */
-void netdev_resync_ops(struct net_device *dev)
-{
-#ifdef CONFIG_COMPAT_NET_DEV_OPS
-        const struct net_device_ops *ops = dev->netdev_ops;
-
-        dev->init = ops->ndo_init;
-        dev->uninit = ops->ndo_uninit;
-        dev->open = ops->ndo_open;
-        dev->change_rx_flags = ops->ndo_change_rx_flags;
-        dev->set_rx_mode = ops->ndo_set_rx_mode;
-        dev->set_multicast_list = ops->ndo_set_multicast_list;
-        dev->set_mac_address = ops->ndo_set_mac_address;
-        dev->validate_addr = ops->ndo_validate_addr;
-        dev->do_ioctl = ops->ndo_do_ioctl;
-        dev->set_config = ops->ndo_set_config;
-        dev->change_mtu = ops->ndo_change_mtu;
-        dev->neigh_setup = ops->ndo_neigh_setup;
-        dev->tx_timeout = ops->ndo_tx_timeout;
-        dev->get_stats = ops->ndo_get_stats;
-        dev->vlan_rx_register = ops->ndo_vlan_rx_register;
-        dev->vlan_rx_add_vid = ops->ndo_vlan_rx_add_vid;
-        dev->vlan_rx_kill_vid = ops->ndo_vlan_rx_kill_vid;
-#ifdef CONFIG_NET_POLL_CONTROLLER
-        dev->poll_controller = ops->ndo_poll_controller;
-#endif
-#endif
-}
-EXPORT_SYMBOL(netdev_resync_ops);
-
 /**
  *      register_netdevice      - register a network device
  *      @dev: device to register
@@ -4405,23 +4733,6 @@ int register_netdevice(struct net_device *dev)
 
         dev->iflink = -1;
 
-#ifdef CONFIG_COMPAT_NET_DEV_OPS
-        /* Netdevice_ops API compatibility support.
-         * This is temporary until all network devices are converted.
-         */
-        if (dev->netdev_ops) {
-                netdev_resync_ops(dev);
-        } else {
-                char drivername[64];
-                pr_info("%s (%s): not using net_device_ops yet\n",
-                        dev->name, netdev_drivername(dev, drivername, 64));
-
-                /* This works only because net_device_ops and the
-                   compatibility structure are the same. */
-                dev->netdev_ops = (void *) &(dev->init);
-        }
-#endif
-
         /* Init, if this function is available */
         if (dev->netdev_ops->ndo_init) {
                 ret = dev->netdev_ops->ndo_init(dev);
@@ -4707,13 +5018,30 @@ void netdev_run_todo(void)
  *      the internal statistics structure is used.
  */
 const struct net_device_stats *dev_get_stats(struct net_device *dev)
- {
+{
         const struct net_device_ops *ops = dev->netdev_ops;
 
         if (ops->ndo_get_stats)
                 return ops->ndo_get_stats(dev);
-        else
-                return &dev->stats;
+        else {
+                unsigned long tx_bytes = 0, tx_packets = 0, tx_dropped = 0;
+                struct net_device_stats *stats = &dev->stats;
+                unsigned int i;
+                struct netdev_queue *txq;
+
+                for (i = 0; i < dev->num_tx_queues; i++) {
+                        txq = netdev_get_tx_queue(dev, i);
+                        tx_bytes   += txq->tx_bytes;
+                        tx_packets += txq->tx_packets;
+                        tx_dropped += txq->tx_dropped;
+                }
+                if (tx_bytes || tx_packets || tx_dropped) {
+                        stats->tx_bytes   = tx_bytes;
+                        stats->tx_packets = tx_packets;
+                        stats->tx_dropped = tx_dropped;
+                }
+                return stats;
+        }
 }
 EXPORT_SYMBOL(dev_get_stats);
 
@@ -4748,18 +5076,18 @@ struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name,
         struct netdev_queue *tx;
         struct net_device *dev;
         size_t alloc_size;
-        void *p;
+        struct net_device *p;
 
         BUG_ON(strlen(name) >= sizeof(dev->name));
 
         alloc_size = sizeof(struct net_device);
         if (sizeof_priv) {
                 /* ensure 32-byte alignment of private area */
-                alloc_size = (alloc_size + NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST;
+                alloc_size = ALIGN(alloc_size, NETDEV_ALIGN);
                 alloc_size += sizeof_priv;
         }
         /* ensure 32-byte alignment of whole construct */
-        alloc_size += NETDEV_ALIGN_CONST;
+        alloc_size += NETDEV_ALIGN - 1;
 
         p = kzalloc(alloc_size, GFP_KERNEL);
         if (!p) {
@@ -4771,13 +5099,17 @@ struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name,
         if (!tx) {
                 printk(KERN_ERR "alloc_netdev: Unable to allocate "
                        "tx qdiscs.\n");
-                kfree(p);
-                return NULL;
+                goto free_p;
         }
 
-        dev = (struct net_device *)
-                (((long)p + NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST);
+        dev = PTR_ALIGN(p, NETDEV_ALIGN);
         dev->padded = (char *)dev - (char *)p;
+
+        if (dev_addr_init(dev))
+                goto free_tx;
+
+        dev_unicast_init(dev);
+
         dev_net_set(dev, &init_net);
 
         dev->_tx = tx;
@@ -4789,9 +5121,17 @@ struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name,
         netdev_init_queues(dev);
 
         INIT_LIST_HEAD(&dev->napi_list);
+        dev->priv_flags = IFF_XMIT_DST_RELEASE;
         setup(dev);
         strcpy(dev->name, name);
         return dev;
+
+free_tx:
+        kfree(tx);
+
+free_p:
+        kfree(p);
+        return NULL;
 }
 EXPORT_SYMBOL(alloc_netdev_mq);
 
@@ -4811,6 +5151,9 @@ void free_netdev(struct net_device *dev)
 
         kfree(dev->_tx);
 
+        /* Flush device addresses */
+        dev_addr_flush(dev);
+
         list_for_each_entry_safe(p, n, &dev->napi_list, dev_list)
                 netif_napi_del(p);
 
@@ -4970,6 +5313,7 @@ int dev_change_net_namespace(struct net_device *dev, struct net *net, const char
         /*
          *      Flush the unicast and multicast chains
          */
+        dev_unicast_flush(dev);
         dev_addr_discard(dev);
 
         netdev_unregister_kobject(dev);
@@ -5325,12 +5669,6 @@ EXPORT_SYMBOL(net_enable_timestamp);
 EXPORT_SYMBOL(net_disable_timestamp);
 EXPORT_SYMBOL(dev_get_flags);
 
-#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
-EXPORT_SYMBOL(br_handle_frame_hook);
-EXPORT_SYMBOL(br_fdb_get_hook);
-EXPORT_SYMBOL(br_fdb_put_hook);
-#endif
-
 EXPORT_SYMBOL(dev_load);
 
 EXPORT_PER_CPU_SYMBOL(softnet_data);