net: Abstract dst->neighbour accesses behind helpers.

dst_{get,set}_neighbour()

Signed-off-by: David S. Miller <davem@davemloft.net>

29 files changed, 200 insertions, 140 deletions

diff --git a/drivers/infiniband/core/addr.c b/drivers/infiniband/core/addr.c
index 8e21d457b899..236ad9a89c0a 100644
--- a/drivers/infiniband/core/addr.c
+++ b/drivers/infiniband/core/addr.c
@@ -215,7 +215,7 @@ static int addr4_resolve(struct sockaddr_in *src_in,
 
         neigh = neigh_lookup(&arp_tbl, &rt->rt_gateway, rt->dst.dev);
         if (!neigh || !(neigh->nud_state & NUD_VALID)) {
-                neigh_event_send(rt->dst.neighbour, NULL);
+                neigh_event_send(dst_get_neighbour(&rt->dst), NULL);
                 ret = -ENODATA;
                 if (neigh)
                         goto release;
@@ -273,9 +273,10 @@ static int addr6_resolve(struct sockaddr_in6 *src_in,
                 goto put;
         }
 
-        neigh = dst->neighbour;
+        neigh = dst_get_neighbour(dst);
         if (!neigh || !(neigh->nud_state & NUD_VALID)) {
-                neigh_event_send(dst->neighbour, NULL);
+                if (neigh)
+                        neigh_event_send(neigh, NULL);
                 ret = -ENODATA;
                 goto put;
         }
diff --git a/drivers/infiniband/hw/cxgb3/iwch_cm.c b/drivers/infiniband/hw/cxgb3/iwch_cm.c
index 0a5008fbebac..17bf9d95463c 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_cm.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_cm.c
@@ -1328,6 +1328,7 @@ static int pass_accept_req(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
         struct iwch_ep *child_ep, *parent_ep = ctx;
         struct cpl_pass_accept_req *req = cplhdr(skb);
         unsigned int hwtid = GET_TID(req);
+        struct neighbour *neigh;
         struct dst_entry *dst;
         struct l2t_entry *l2t;
         struct rtable *rt;
@@ -1364,7 +1365,8 @@ static int pass_accept_req(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
                 goto reject;
         }
         dst = &rt->dst;
-        l2t = t3_l2t_get(tdev, dst->neighbour, dst->neighbour->dev);
+        neigh = dst_get_neighbour(dst);
+        l2t = t3_l2t_get(tdev, neigh, neigh->dev);
         if (!l2t) {
                 printk(KERN_ERR MOD "%s - failed to allocate l2t entry!\n",
                        __func__);
@@ -1874,10 +1876,11 @@ static int is_loopback_dst(struct iw_cm_id *cm_id)
 
 int iwch_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
 {
-        int err = 0;
         struct iwch_dev *h = to_iwch_dev(cm_id->device);
+        struct neighbour *neigh;
         struct iwch_ep *ep;
         struct rtable *rt;
+        int err = 0;
 
         if (is_loopback_dst(cm_id)) {
                 err = -ENOSYS;
@@ -1933,9 +1936,10 @@ int iwch_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
         }
         ep->dst = &rt->dst;
 
+        neigh = dst_get_neighbour(ep->dst);
+
         /* get a l2t entry */
-        ep->l2t = t3_l2t_get(ep->com.tdev, ep->dst->neighbour,
-                             ep->dst->neighbour->dev);
+        ep->l2t = t3_l2t_get(ep->com.tdev, neigh, neigh->dev);
         if (!ep->l2t) {
                 printk(KERN_ERR MOD "%s - cannot alloc l2e.\n", __func__);
                 err = -ENOMEM;
diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c
index 31fb44085c9b..77f769d9227d 100644
--- a/drivers/infiniband/hw/cxgb4/cm.c
+++ b/drivers/infiniband/hw/cxgb4/cm.c
@@ -1325,6 +1325,7 @@ static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb)
         unsigned int stid = GET_POPEN_TID(ntohl(req->tos_stid));
         struct tid_info *t = dev->rdev.lldi.tids;
         unsigned int hwtid = GET_TID(req);
+        struct neighbour *neigh;
         struct dst_entry *dst;
         struct l2t_entry *l2t;
         struct rtable *rt;
@@ -1357,11 +1358,11 @@ static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb)
                 goto reject;
         }
         dst = &rt->dst;
-        if (dst->neighbour->dev->flags & IFF_LOOPBACK) {
+        neigh = dst_get_neighbour(dst);
+        if (neigh->dev->flags & IFF_LOOPBACK) {
                 pdev = ip_dev_find(&init_net, peer_ip);
                 BUG_ON(!pdev);
-                l2t = cxgb4_l2t_get(dev->rdev.lldi.l2t, dst->neighbour,
-                                    pdev, 0);
+                l2t = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh, pdev, 0);
                 mtu = pdev->mtu;
                 tx_chan = cxgb4_port_chan(pdev);
                 smac_idx = (cxgb4_port_viid(pdev) & 0x7F) << 1;
@@ -1372,17 +1373,16 @@ static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb)
                 rss_qid = dev->rdev.lldi.rxq_ids[cxgb4_port_idx(pdev) * step];
                 dev_put(pdev);
         } else {
-                l2t = cxgb4_l2t_get(dev->rdev.lldi.l2t, dst->neighbour,
-                                        dst->neighbour->dev, 0);
+                l2t = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh, neigh->dev, 0);
                 mtu = dst_mtu(dst);
-                tx_chan = cxgb4_port_chan(dst->neighbour->dev);
-                smac_idx = (cxgb4_port_viid(dst->neighbour->dev) & 0x7F) << 1;
+                tx_chan = cxgb4_port_chan(neigh->dev);
+                smac_idx = (cxgb4_port_viid(neigh->dev) & 0x7F) << 1;
                 step = dev->rdev.lldi.ntxq / dev->rdev.lldi.nchan;
-                txq_idx = cxgb4_port_idx(dst->neighbour->dev) * step;
-                ctrlq_idx = cxgb4_port_idx(dst->neighbour->dev);
+                txq_idx = cxgb4_port_idx(neigh->dev) * step;
+                ctrlq_idx = cxgb4_port_idx(neigh->dev);
                 step = dev->rdev.lldi.nrxq / dev->rdev.lldi.nchan;
                 rss_qid = dev->rdev.lldi.rxq_ids[
-                          cxgb4_port_idx(dst->neighbour->dev) * step];
+                          cxgb4_port_idx(neigh->dev) * step];
         }
         if (!l2t) {
                 printk(KERN_ERR MOD "%s - failed to allocate l2t entry!\n",
@@ -1847,6 +1847,7 @@ int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
         struct c4iw_ep *ep;
         struct rtable *rt;
         struct net_device *pdev;
+        struct neighbour *neigh;
         int step;
 
         if ((conn_param->ord > c4iw_max_read_depth) ||
@@ -1908,14 +1909,15 @@ int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
         }
         ep->dst = &rt->dst;
 
+        neigh = dst_get_neighbour(ep->dst);
+
         /* get a l2t entry */
-        if (ep->dst->neighbour->dev->flags & IFF_LOOPBACK) {
+        if (neigh->dev->flags & IFF_LOOPBACK) {
                 PDBG("%s LOOPBACK\n", __func__);
                 pdev = ip_dev_find(&init_net,
                                    cm_id->remote_addr.sin_addr.s_addr);
                 ep->l2t = cxgb4_l2t_get(ep->com.dev->rdev.lldi.l2t,
-                                        ep->dst->neighbour,
-                                        pdev, 0);
+                                        neigh, pdev, 0);
                 ep->mtu = pdev->mtu;
                 ep->tx_chan = cxgb4_port_chan(pdev);
                 ep->smac_idx = (cxgb4_port_viid(pdev) & 0x7F) << 1;
@@ -1930,20 +1932,18 @@ int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
                 dev_put(pdev);
         } else {
                 ep->l2t = cxgb4_l2t_get(ep->com.dev->rdev.lldi.l2t,
-                                        ep->dst->neighbour,
-                                        ep->dst->neighbour->dev, 0);
+                                        neigh, neigh->dev, 0);
                 ep->mtu = dst_mtu(ep->dst);
-                ep->tx_chan = cxgb4_port_chan(ep->dst->neighbour->dev);
-                ep->smac_idx = (cxgb4_port_viid(ep->dst->neighbour->dev) &
-                                0x7F) << 1;
+                ep->tx_chan = cxgb4_port_chan(neigh->dev);
+                ep->smac_idx = (cxgb4_port_viid(neigh->dev) & 0x7F) << 1;
                 step = ep->com.dev->rdev.lldi.ntxq /
                        ep->com.dev->rdev.lldi.nchan;
-                ep->txq_idx = cxgb4_port_idx(ep->dst->neighbour->dev) * step;
-                ep->ctrlq_idx = cxgb4_port_idx(ep->dst->neighbour->dev);
+                ep->txq_idx = cxgb4_port_idx(neigh->dev) * step;
+                ep->ctrlq_idx = cxgb4_port_idx(neigh->dev);
                 step = ep->com.dev->rdev.lldi.nrxq /
                        ep->com.dev->rdev.lldi.nchan;
                 ep->rss_qid = ep->com.dev->rdev.lldi.rxq_ids[
-                              cxgb4_port_idx(ep->dst->neighbour->dev) * step];
+                              cxgb4_port_idx(neigh->dev) * step];
         }
         if (!ep->l2t) {
                 printk(KERN_ERR MOD "%s - cannot alloc l2e.\n", __func__);
diff --git a/drivers/infiniband/hw/nes/nes_cm.c b/drivers/infiniband/hw/nes/nes_cm.c
index e74cdf9ef471..73bc18465c9c 100644
--- a/drivers/infiniband/hw/nes/nes_cm.c
+++ b/drivers/infiniband/hw/nes/nes_cm.c
@@ -1151,7 +1151,7 @@ static int nes_addr_resolve_neigh(struct nes_vnic *nesvnic, u32 dst_ip, int arpi
         }
 
         if ((neigh == NULL) || (!(neigh->nud_state & NUD_VALID)))
-                neigh_event_send(rt->dst.neighbour, NULL);
+                neigh_event_send(dst_get_neighbour(&rt->dst), NULL);
 
         ip_rt_put(rt);
         return rc;
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
index 86addca9ddf6..43f89ba0a908 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -560,9 +560,11 @@ static void neigh_add_path(struct sk_buff *skb, struct net_device *dev)
         struct ipoib_dev_priv *priv = netdev_priv(dev);
         struct ipoib_path *path;
         struct ipoib_neigh *neigh;
+        struct neighbour *n;
         unsigned long flags;
 
-        neigh = ipoib_neigh_alloc(skb_dst(skb)->neighbour, skb->dev);
+        n = dst_get_neighbour(skb_dst(skb));
+        neigh = ipoib_neigh_alloc(n, skb->dev);
         if (!neigh) {
                 ++dev->stats.tx_dropped;
                 dev_kfree_skb_any(skb);
@@ -571,9 +573,9 @@ static void neigh_add_path(struct sk_buff *skb, struct net_device *dev)
 
         spin_lock_irqsave(&priv->lock, flags);
 
-        path = __path_find(dev, skb_dst(skb)->neighbour->ha + 4);
+        path = __path_find(dev, n->ha + 4);
         if (!path) {
-                path = path_rec_create(dev, skb_dst(skb)->neighbour->ha + 4);
+                path = path_rec_create(dev, n->ha + 4);
                 if (!path)
                         goto err_path;
 
@@ -607,7 +609,7 @@ static void neigh_add_path(struct sk_buff *skb, struct net_device *dev)
                         }
                 } else {
                         spin_unlock_irqrestore(&priv->lock, flags);
-                        ipoib_send(dev, skb, path->ah, IPOIB_QPN(skb_dst(skb)->neighbour->ha));
+                        ipoib_send(dev, skb, path->ah, IPOIB_QPN(n->ha));
                         return;
                 }
         } else {
@@ -637,17 +639,20 @@ err_drop:
 static void ipoib_path_lookup(struct sk_buff *skb, struct net_device *dev)
 {
         struct ipoib_dev_priv *priv = netdev_priv(skb->dev);
+        struct dst_entry *dst = skb_dst(skb);
+        struct neighbour *n;
 
         /* Look up path record for unicasts */
-        if (skb_dst(skb)->neighbour->ha[4] != 0xff) {
+        n = dst_get_neighbour(dst);
+        if (n->ha[4] != 0xff) {
                 neigh_add_path(skb, dev);
                 return;
         }
 
         /* Add in the P_Key for multicasts */
-        skb_dst(skb)->neighbour->ha[8] = (priv->pkey >> 8) & 0xff;
-        skb_dst(skb)->neighbour->ha[9] = priv->pkey & 0xff;
-        ipoib_mcast_send(dev, skb_dst(skb)->neighbour->ha + 4, skb);
+        n->ha[8] = (priv->pkey >> 8) & 0xff;
+        n->ha[9] = priv->pkey & 0xff;
+        ipoib_mcast_send(dev, n->ha + 4, skb);
 }
 
 static void unicast_arp_send(struct sk_buff *skb, struct net_device *dev,
@@ -712,18 +717,20 @@ static int ipoib_start_xmit(struct sk_buff *skb, struct net_device *dev)
 {
         struct ipoib_dev_priv *priv = netdev_priv(dev);
         struct ipoib_neigh *neigh;
+        struct neighbour *n;
         unsigned long flags;
 
-        if (likely(skb_dst(skb) && skb_dst(skb)->neighbour)) {
-                if (unlikely(!*to_ipoib_neigh(skb_dst(skb)->neighbour))) {
+        n = dst_get_neighbour(skb_dst(skb));
+        if (likely(skb_dst(skb) && n)) {
+                if (unlikely(!*to_ipoib_neigh(n))) {
                         ipoib_path_lookup(skb, dev);
                         return NETDEV_TX_OK;
                 }
 
-                neigh = *to_ipoib_neigh(skb_dst(skb)->neighbour);
+                neigh = *to_ipoib_neigh(n);
 
                 if (unlikely((memcmp(&neigh->dgid.raw,
-                                     skb_dst(skb)->neighbour->ha + 4,
+                                     n->ha + 4,
                                      sizeof(union ib_gid))) ||
                              (neigh->dev != dev))) {
                         spin_lock_irqsave(&priv->lock, flags);
@@ -749,7 +756,7 @@ static int ipoib_start_xmit(struct sk_buff *skb, struct net_device *dev)
                                 return NETDEV_TX_OK;
                         }
                 } else if (neigh->ah) {
-                        ipoib_send(dev, skb, neigh->ah, IPOIB_QPN(skb_dst(skb)->neighbour->ha));
+                        ipoib_send(dev, skb, neigh->ah, IPOIB_QPN(n->ha));
                         return NETDEV_TX_OK;
                 }
 
@@ -812,6 +819,8 @@ static int ipoib_hard_header(struct sk_buff *skb,
                              const void *daddr, const void *saddr, unsigned len)
 {
         struct ipoib_header *header;
+        struct dst_entry *dst;
+        struct neighbour *n;
 
         header = (struct ipoib_header *) skb_push(skb, sizeof *header);
 
@@ -823,7 +832,11 @@ static int ipoib_hard_header(struct sk_buff *skb,
          * destination address onto the front of the skb so we can
          * figure out where to send the packet later.
          */
-        if ((!skb_dst(skb) || !skb_dst(skb)->neighbour) && daddr) {
+        dst = skb_dst(skb);
+        n = NULL;
+        if (dst)
+                n = dst_get_neighbour(dst);
+        if ((!dst || !n) && daddr) {
                 struct ipoib_pseudoheader *phdr =
                         (struct ipoib_pseudoheader *) skb_push(skb, sizeof *phdr);
                 memcpy(phdr->hwaddr, daddr, INFINIBAND_ALEN);
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
index 3871ac663554..ecea4fe1ed00 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
@@ -258,11 +258,15 @@ static int ipoib_mcast_join_finish(struct ipoib_mcast *mcast,
         netif_tx_lock_bh(dev);
         while (!skb_queue_empty(&mcast->pkt_queue)) {
                 struct sk_buff *skb = skb_dequeue(&mcast->pkt_queue);
+                struct dst_entry *dst = skb_dst(skb);
+                struct neighbour *n = NULL;
+
                 netif_tx_unlock_bh(dev);
 
                 skb->dev = dev;
-
-                if (!skb_dst(skb) || !skb_dst(skb)->neighbour) {
+                if (dst)
+                        n = dst_get_neighbour(dst);
+                if (!dst || !n) {
                         /* put pseudoheader back on for next time */
                         skb_push(skb, sizeof (struct ipoib_pseudoheader));
                 }
@@ -715,11 +719,13 @@ void ipoib_mcast_send(struct net_device *dev, void *mgid, struct sk_buff *skb)
 
 out:
         if (mcast && mcast->ah) {
-                if (skb_dst(skb)                &&
-                    skb_dst(skb)->neighbour &&
-                    !*to_ipoib_neigh(skb_dst(skb)->neighbour)) {
-                        struct ipoib_neigh *neigh = ipoib_neigh_alloc(skb_dst(skb)->neighbour,
-                                                                        skb->dev);
+                struct dst_entry *dst = skb_dst(skb);
+                struct neighbour *n = NULL;
+                if (dst)
+                        n = dst_get_neighbour(dst);
+                if (n && !*to_ipoib_neigh(n)) {
+                        struct ipoib_neigh *neigh = ipoib_neigh_alloc(n,
+                                                                      skb->dev);
 
                         if (neigh) {
                                 kref_get(&mcast->ah->ref);
diff --git a/drivers/net/cxgb3/cxgb3_offload.c b/drivers/net/cxgb3/cxgb3_offload.c
index 9db9068d29d2..fa1b450af825 100644
--- a/drivers/net/cxgb3/cxgb3_offload.c
+++ b/drivers/net/cxgb3/cxgb3_offload.c
@@ -971,7 +971,7 @@ static int nb_callback(struct notifier_block *self, unsigned long event,
         case (NETEVENT_REDIRECT):{
                 struct netevent_redirect *nr = ctx;
                 cxgb_redirect(nr->old, nr->new);
-                cxgb_neigh_update(nr->new->neighbour);
+                cxgb_neigh_update(dst_get_neighbour(nr->new));
                 break;
         }
         default:
@@ -1116,8 +1116,8 @@ static void cxgb_redirect(struct dst_entry *old, struct dst_entry *new)
         struct l2t_entry *e;
         struct t3c_tid_entry *te;
 
-        olddev = old->neighbour->dev;
-        newdev = new->neighbour->dev;
+        olddev = dst_get_neighbour(old)->dev;
+        newdev = dst_get_neighbour(new)->dev;
         if (!is_offloading(olddev))
                 return;
         if (!is_offloading(newdev)) {
@@ -1134,7 +1134,7 @@ static void cxgb_redirect(struct dst_entry *old, struct dst_entry *new)
         }
 
         /* Add new L2T entry */
-        e = t3_l2t_get(tdev, new->neighbour, newdev);
+        e = t3_l2t_get(tdev, dst_get_neighbour(new), newdev);
         if (!e) {
                 printk(KERN_ERR "%s: couldn't allocate new l2t entry!\n",
                        __func__);
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
index fd69da3fa6b4..e2c9ac5fcb36 100644
--- a/drivers/s390/net/qeth_l3_main.c
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -2742,9 +2742,14 @@ static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
 {
         int cast_type = RTN_UNSPEC;
-
-        if (skb_dst(skb) && skb_dst(skb)->neighbour) {
-                cast_type = skb_dst(skb)->neighbour->type;
+        struct neighbour *n = NULL;
+        struct dst_entry *dst;
+
+        dst = skb_dst(skb);
+        if (dst)
+                n = dst_get_neighbour(dst);
+        if (n) {
+                cast_type = n->type;
                 if ((cast_type == RTN_BROADCAST) ||
                     (cast_type == RTN_MULTICAST) ||
                     (cast_type == RTN_ANYCAST))
@@ -2787,6 +2792,9 @@ int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
                 struct sk_buff *skb, int ipv, int cast_type)
 {
+        struct neighbour *n = NULL;
+        struct dst_entry *dst;
+
         memset(hdr, 0, sizeof(struct qeth_hdr));
         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
         hdr->hdr.l3.ext_flags = 0;
@@ -2804,13 +2812,16 @@ static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
         }
 
         hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
+        dst = skb_dst(skb);
+        if (dst)
+                n = dst_get_neighbour(dst);
         if (ipv == 4) {
                 /* IPv4 */
                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
                 memset(hdr->hdr.l3.dest_addr, 0, 12);
-                if ((skb_dst(skb)) && (skb_dst(skb)->neighbour)) {
+                if (n) {
                         *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
-                            *((u32 *) skb_dst(skb)->neighbour->primary_key);
+                            *((u32 *) n->primary_key);
                 } else {
                         /* fill in destination address used in ip header */
                         *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
@@ -2821,9 +2832,9 @@ static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
                 if (card->info.type == QETH_CARD_TYPE_IQD)
                         hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
-                if ((skb_dst(skb)) && (skb_dst(skb)->neighbour)) {
+                if (n) {
                         memcpy(hdr->hdr.l3.dest_addr,
-                               skb_dst(skb)->neighbour->primary_key, 16);
+                               n->primary_key, 16);
                 } else {
                         /* fill in destination address used in ip header */
                         memcpy(hdr->hdr.l3.dest_addr,
diff --git a/drivers/scsi/cxgbi/cxgb3i/cxgb3i.c b/drivers/scsi/cxgbi/cxgb3i/cxgb3i.c
index fc2cdb62f53b..abc7b122e050 100644
--- a/drivers/scsi/cxgbi/cxgb3i/cxgb3i.c
+++ b/drivers/scsi/cxgbi/cxgb3i/cxgb3i.c
@@ -985,7 +985,7 @@ static int init_act_open(struct cxgbi_sock *csk)
                 csk->saddr.sin_addr.s_addr = chba->ipv4addr;
 
         csk->rss_qid = 0;
-        csk->l2t = t3_l2t_get(t3dev, dst->neighbour, ndev);
+        csk->l2t = t3_l2t_get(t3dev, dst_get_neighbour(dst), ndev);
         if (!csk->l2t) {
                 pr_err("NO l2t available.\n");
                 return -EINVAL;
diff --git a/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c b/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c
index f3a4cd7cf782..ae13c4993aa3 100644
--- a/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c
+++ b/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c
@@ -1160,7 +1160,7 @@ static int init_act_open(struct cxgbi_sock *csk)
         cxgbi_sock_set_flag(csk, CTPF_HAS_ATID);
         cxgbi_sock_get(csk);
 
-        csk->l2t = cxgb4_l2t_get(lldi->l2t, csk->dst->neighbour, ndev, 0);
+        csk->l2t = cxgb4_l2t_get(lldi->l2t, dst_get_neighbour(csk->dst), ndev, 0);
         if (!csk->l2t) {
                 pr_err("%s, cannot alloc l2t.\n", ndev->name);
                 goto rel_resource;
diff --git a/drivers/scsi/cxgbi/libcxgbi.c b/drivers/scsi/cxgbi/libcxgbi.c
index a2a9c7c6c643..77ac217ad5ce 100644
--- a/drivers/scsi/cxgbi/libcxgbi.c
+++ b/drivers/scsi/cxgbi/libcxgbi.c
@@ -492,7 +492,7 @@ static struct cxgbi_sock *cxgbi_check_route(struct sockaddr *dst_addr)
                 goto err_out;
         }
         dst = &rt->dst;
-        ndev = dst->neighbour->dev;
+        ndev = dst_get_neighbour(dst)->dev;
 
         if (rt->rt_flags & (RTCF_MULTICAST | RTCF_BROADCAST)) {
                 pr_info("multi-cast route %pI4, port %u, dev %s.\n",
@@ -506,7 +506,7 @@ static struct cxgbi_sock *cxgbi_check_route(struct sockaddr *dst_addr)
                 ndev = ip_dev_find(&init_net, daddr->sin_addr.s_addr);
                 mtu = ndev->mtu;
                 pr_info("rt dev %s, loopback -> %s, mtu %u.\n",
-                        dst->neighbour->dev->name, ndev->name, mtu);
+                        dst_get_neighbour(dst)->dev->name, ndev->name, mtu);
         }
 
         cdev = cxgbi_device_find_by_netdev(ndev, &port);
diff --git a/include/net/dst.h b/include/net/dst.h
index 0dd7ccbc0dd5..8147206eefb9 100644
--- a/include/net/dst.h
+++ b/include/net/dst.h
@@ -37,7 +37,7 @@ struct dst_entry {
         unsigned long           _metrics;
         unsigned long           expires;
         struct dst_entry        *path;
-        struct neighbour        *neighbour;
+        struct neighbour        *_neighbour;
 #ifdef CONFIG_XFRM
         struct xfrm_state       *xfrm;
 #else
@@ -86,6 +86,16 @@ struct dst_entry {
         };
 };
 
+static inline struct neighbour *dst_get_neighbour(struct dst_entry *dst)
+{
+        return dst->_neighbour;
+}
+
+static inline void dst_set_neighbour(struct dst_entry *dst, struct neighbour *neigh)
+{
+        dst->_neighbour = neigh;
+}
+
 extern u32 *dst_cow_metrics_generic(struct dst_entry *dst, unsigned long old);
 extern const u32 dst_default_metrics[RTAX_MAX];
 
@@ -371,8 +381,10 @@ static inline void dst_rcu_free(struct rcu_head *head)
 
 static inline void dst_confirm(struct dst_entry *dst)
 {
-        if (dst)
-                neigh_confirm(dst->neighbour);
+        if (dst) {
+                struct neighbour *n = dst_get_neighbour(dst);
+                neigh_confirm(n);
+        }
 }
 
 static inline void dst_link_failure(struct sk_buff *skb)
diff --git a/net/atm/clip.c b/net/atm/clip.c
index c6cd5318be3f..4bc8c67ecb14 100644
--- a/net/atm/clip.c
+++ b/net/atm/clip.c
@@ -362,33 +362,37 @@ static netdev_tx_t clip_start_xmit(struct sk_buff *skb,
                                    struct net_device *dev)
 {
         struct clip_priv *clip_priv = PRIV(dev);
+        struct dst_entry *dst = skb_dst(skb);
         struct atmarp_entry *entry;
+        struct neighbour *n;
         struct atm_vcc *vcc;
         int old;
         unsigned long flags;
 
         pr_debug("(skb %p)\n", skb);
-        if (!skb_dst(skb)) {
+        if (!dst) {
                 pr_err("skb_dst(skb) == NULL\n");
                 dev_kfree_skb(skb);
                 dev->stats.tx_dropped++;
                 return NETDEV_TX_OK;
         }
-        if (!skb_dst(skb)->neighbour) {
+        n = dst_get_neighbour(dst);
+        if (!n) {
 #if 0
-                skb_dst(skb)->neighbour = clip_find_neighbour(skb_dst(skb), 1);
-                if (!skb_dst(skb)->neighbour) {
+                n = clip_find_neighbour(skb_dst(skb), 1);
+                if (!n) {
                         dev_kfree_skb(skb);     /* lost that one */
                         dev->stats.tx_dropped++;
                         return 0;
                 }
+                dst_set_neighbour(dst, n);
 #endif
                 pr_err("NO NEIGHBOUR !\n");
                 dev_kfree_skb(skb);
                 dev->stats.tx_dropped++;
                 return NETDEV_TX_OK;
         }
-        entry = NEIGH2ENTRY(skb_dst(skb)->neighbour);
+        entry = NEIGH2ENTRY(n);
         if (!entry->vccs) {
                 if (time_after(jiffies, entry->expires)) {
                         /* should be resolved */
@@ -405,7 +409,7 @@ static netdev_tx_t clip_start_xmit(struct sk_buff *skb,
         }
         pr_debug("neigh %p, vccs %p\n", entry, entry->vccs);
         ATM_SKB(skb)->vcc = vcc = entry->vccs->vcc;
-        pr_debug("using neighbour %p, vcc %p\n", skb_dst(skb)->neighbour, vcc);
+        pr_debug("using neighbour %p, vcc %p\n", n, vcc);
         if (entry->vccs->encap) {
                 void *here;
 
diff --git a/net/bridge/br_netfilter.c b/net/bridge/br_netfilter.c
index 1fe43fdf9973..b1a5f9777b7e 100644
--- a/net/bridge/br_netfilter.c
+++ b/net/bridge/br_netfilter.c
@@ -350,7 +350,7 @@ static int br_nf_pre_routing_finish_bridge(struct sk_buff *skb)
         if (!skb->dev)
                 goto free_skb;
         dst = skb_dst(skb);
-        neigh = dst->neighbour;
+        neigh = dst_get_neighbour(dst);
         if (neigh->hh.hh_len) {
                 neigh_hh_bridge(&neigh->hh, skb);
                 skb->dev = nf_bridge->physindev;
diff --git a/net/core/dst.c b/net/core/dst.c
index 4aacc14936a0..14b33baf0733 100644
--- a/net/core/dst.c
+++ b/net/core/dst.c
@@ -171,7 +171,7 @@ void *dst_alloc(struct dst_ops *ops, struct net_device *dev,
         dst_init_metrics(dst, dst_default_metrics, true);
         dst->expires = 0UL;
         dst->path = dst;
-        dst->neighbour = NULL;
+        dst->_neighbour = NULL;
 #ifdef CONFIG_XFRM
         dst->xfrm = NULL;
 #endif
@@ -229,11 +229,11 @@ struct dst_entry *dst_destroy(struct dst_entry * dst)
         smp_rmb();
 
 again:
-        neigh = dst->neighbour;
+        neigh = dst->_neighbour;
         child = dst->child;
 
         if (neigh) {
-                dst->neighbour = NULL;
+                dst->_neighbour = NULL;
                 neigh_release(neigh);
         }
 
@@ -363,8 +363,8 @@ static void dst_ifdown(struct dst_entry *dst, struct net_device *dev,
                 dst->dev = dev_net(dst->dev)->loopback_dev;
                 dev_hold(dst->dev);
                 dev_put(dev);
-                if (dst->neighbour && dst->neighbour->dev == dev) {
-                        dst->neighbour->dev = dst->dev;
+                if (dst->_neighbour && dst->_neighbour->dev == dev) {
+                        dst->_neighbour->dev = dst->dev;
                         dev_hold(dst->dev);
                         dev_put(dev);
                 }
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index cefb8e52615e..8fab9b0bb203 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -1153,11 +1153,12 @@ int neigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new,
 
                 while (neigh->nud_state & NUD_VALID &&
                        (skb = __skb_dequeue(&neigh->arp_queue)) != NULL) {
-                        struct neighbour *n1 = neigh;
+                        struct dst_entry *dst = skb_dst(skb);
+                        struct neighbour *n2, *n1 = neigh;
                         write_unlock_bh(&neigh->lock);
                         /* On shaper/eql skb->dst->neighbour != neigh :( */
-                        if (skb_dst(skb) && skb_dst(skb)->neighbour)
-                                n1 = skb_dst(skb)->neighbour;
+                        if (dst && (n2 = dst_get_neighbour(dst)) != NULL)
+                                n1 = n2;
                         n1->output(n1, skb);
                         write_lock_bh(&neigh->lock);
                 }
diff --git a/net/decnet/dn_neigh.c b/net/decnet/dn_neigh.c
index 5d61e8965b66..0dc3fe61085b 100644
--- a/net/decnet/dn_neigh.c
+++ b/net/decnet/dn_neigh.c
@@ -202,7 +202,7 @@ static int dn_neigh_output_packet(struct sk_buff *skb)
 {
         struct dst_entry *dst = skb_dst(skb);
         struct dn_route *rt = (struct dn_route *)dst;
-        struct neighbour *neigh = dst->neighbour;
+        struct neighbour *neigh = dst_get_neighbour(dst);
         struct net_device *dev = neigh->dev;
         char mac_addr[ETH_ALEN];
 
diff --git a/net/decnet/dn_route.c b/net/decnet/dn_route.c
index 3b6400d17dc2..9bd45fcb3b8e 100644
--- a/net/decnet/dn_route.c
+++ b/net/decnet/dn_route.c
@@ -241,9 +241,11 @@ static int dn_dst_gc(struct dst_ops *ops)
  */
 static void dn_dst_update_pmtu(struct dst_entry *dst, u32 mtu)
 {
+        struct neighbour *n = dst_get_neighbour(dst);
         u32 min_mtu = 230;
-        struct dn_dev *dn = dst->neighbour ?
-                            rcu_dereference_raw(dst->neighbour->dev->dn_ptr) : NULL;
+        struct dn_dev *dn;
+
+        dn = n ? rcu_dereference_raw(n->dev->dn_ptr) : NULL;
 
         if (dn && dn->use_long == 0)
                 min_mtu -= 6;
@@ -708,7 +710,7 @@ out:
 static int dn_to_neigh_output(struct sk_buff *skb)
 {
         struct dst_entry *dst = skb_dst(skb);
-        struct neighbour *n = dst->neighbour;
+        struct neighbour *n = dst_get_neighbour(dst);
 
         return n->output(n, skb);
 }
@@ -723,7 +725,7 @@ static int dn_output(struct sk_buff *skb)
 
         int err = -EINVAL;
 
-        if ((neigh = dst->neighbour) == NULL)
+        if ((neigh = dst_get_neighbour(dst)) == NULL)
                 goto error;
 
         skb->dev = dev;
@@ -840,11 +842,11 @@ static int dn_rt_set_next_hop(struct dn_route *rt, struct dn_fib_res *res)
         }
         rt->rt_type = res->type;
 
-        if (dev != NULL && rt->dst.neighbour == NULL) {
+        if (dev != NULL && dst_get_neighbour(&rt->dst) == NULL) {
                 n = __neigh_lookup_errno(&dn_neigh_table, &rt->rt_gateway, dev);
                 if (IS_ERR(n))
                         return PTR_ERR(n);
-                rt->dst.neighbour = n;
+                dst_set_neighbour(&rt->dst, n);
         }
 
         if (dst_metric(&rt->dst, RTAX_MTU) > rt->dst.dev->mtu)
@@ -1151,7 +1153,7 @@ make_route:
         rt->rt_dst_map    = fld.daddr;
         rt->rt_src_map    = fld.saddr;
 
-        rt->dst.neighbour = neigh;
+        dst_set_neighbour(&rt->dst, neigh);
         neigh = NULL;
 
         rt->dst.lastuse = jiffies;
@@ -1423,7 +1425,7 @@ make_route:
         rt->fld.flowidn_iif  = in_dev->ifindex;
         rt->fld.flowidn_mark = fld.flowidn_mark;
 
-        rt->dst.neighbour = neigh;
+        dst_set_neighbour(&rt->dst, neigh);
         rt->dst.lastuse = jiffies;
         rt->dst.output = dn_rt_bug;
         switch (res.type) {
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index 8871067560db..d7bb94c48345 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -731,9 +731,9 @@ static netdev_tx_t ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev
                 }
 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
                 else if (skb->protocol == htons(ETH_P_IPV6)) {
+                        struct neighbour *neigh = dst_get_neighbour(skb_dst(skb));
                         const struct in6_addr *addr6;
                         int addr_type;
-                        struct neighbour *neigh = skb_dst(skb)->neighbour;
 
                         if (neigh == NULL)
                                 goto tx_error;
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index db296a98b236..be27e609a98b 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -204,7 +204,7 @@ static inline int ip_finish_output2(struct sk_buff *skb)
                 skb = skb2;
         }
 
-        neigh = dst->neighbour;
+        neigh = dst_get_neighbour(dst);
         if (neigh)
                 return neigh_output(neigh, skb);
 
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index bcf9bb508200..1d4cd3b4fd69 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -412,8 +412,10 @@ static int rt_cache_seq_show(struct seq_file *seq, void *v)
                            "HHUptod\tSpecDst");
         else {
                 struct rtable *r = v;
+                struct neighbour *n;
                 int len;
 
+                n = dst_get_neighbour(&r->dst);
                 seq_printf(seq, "%s\t%08X\t%08X\t%8X\t%d\t%u\t%d\t"
                               "%08X\t%d\t%u\t%u\t%02X\t%d\t%1d\t%08X%n",
                         r->dst.dev ? r->dst.dev->name : "*",
@@ -427,9 +429,7 @@ static int rt_cache_seq_show(struct seq_file *seq, void *v)
                               dst_metric(&r->dst, RTAX_RTTVAR)),
                         r->rt_key_tos,
                         -1,
-                        (r->dst.neighbour &&
-                         (r->dst.neighbour->nud_state & NUD_CONNECTED)) ?
-                           1 : 0,
+                        (n && (n->nud_state & NUD_CONNECTED)) ? 1 : 0,
                         r->rt_spec_dst, &len);
 
                 seq_printf(seq, "%*s\n", 127 - len, "");
@@ -1026,7 +1026,7 @@ static int rt_bind_neighbour(struct rtable *rt)
         n = ipv4_neigh_lookup(tbl, dev, nexthop);
         if (IS_ERR(n))
                 return PTR_ERR(n);
-        rt->dst.neighbour = n;
+        dst_set_neighbour(&rt->dst, n);
 
         return 0;
 }
@@ -1617,23 +1617,24 @@ static int check_peer_redir(struct dst_entry *dst, struct inet_peer *peer)
 {
         struct rtable *rt = (struct rtable *) dst;
         __be32 orig_gw = rt->rt_gateway;
+        struct neighbour *n;
 
         dst_confirm(&rt->dst);
 
-        neigh_release(rt->dst.neighbour);
-        rt->dst.neighbour = NULL;
+        neigh_release(dst_get_neighbour(&rt->dst));
+        dst_set_neighbour(&rt->dst, NULL);
 
         rt->rt_gateway = peer->redirect_learned.a4;
-        if (rt_bind_neighbour(rt) ||
-            !(rt->dst.neighbour->nud_state & NUD_VALID)) {
-                if (rt->dst.neighbour)
-                        neigh_event_send(rt->dst.neighbour, NULL);
+        rt_bind_neighbour(rt);
+        n = dst_get_neighbour(&rt->dst);
+        if (!n || !(n->nud_state & NUD_VALID)) {
+                if (n)
+                        neigh_event_send(n, NULL);
                 rt->rt_gateway = orig_gw;
                 return -EAGAIN;
         } else {
                 rt->rt_flags |= RTCF_REDIRECTED;
-                call_netevent_notifiers(NETEVENT_NEIGH_UPDATE,
-                                        rt->dst.neighbour);
+                call_netevent_notifiers(NETEVENT_NEIGH_UPDATE, n);
         }
         return 0;
 }
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 48cd03df8954..a06c53c14d84 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -656,7 +656,7 @@ ipv6_add_addr(struct inet6_dev *idev, const struct in6_addr *addr, int pfxlen,
          * layer address of our nexhop router
          */
 
-        if (rt->dst.neighbour == NULL)
+        if (dst_get_neighbour(&rt->dst) == NULL)
                 ifa->flags &= ~IFA_F_OPTIMISTIC;
 
         ifa->idev = idev;
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index 158df2365d5e..54a4678955bf 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -1455,7 +1455,7 @@ static int fib6_age(struct rt6_info *rt, void *arg)
                         RT6_TRACE("aging clone %p\n", rt);
                         return -1;
                 } else if ((rt->rt6i_flags & RTF_GATEWAY) &&
-                           (!(rt->dst.neighbour->flags & NTF_ROUTER))) {
+                           (!(dst_get_neighbour(&rt->dst)->flags & NTF_ROUTER))) {
                         RT6_TRACE("purging route %p via non-router but gateway\n",
                                   rt);
                         return -1;
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index eb50bb07ab2e..8db0e4875ad8 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -135,7 +135,7 @@ static int ip6_finish_output2(struct sk_buff *skb)
                                 skb->len);
         }
 
-        neigh = dst->neighbour;
+        neigh = dst_get_neighbour(dst);
         if (neigh)
                 return neigh_output(neigh, skb);
 
@@ -385,6 +385,7 @@ int ip6_forward(struct sk_buff *skb)
         struct ipv6hdr *hdr = ipv6_hdr(skb);
         struct inet6_skb_parm *opt = IP6CB(skb);
         struct net *net = dev_net(dst->dev);
+        struct neighbour *n;
         u32 mtu;
 
         if (net->ipv6.devconf_all->forwarding == 0)
@@ -459,11 +460,10 @@ int ip6_forward(struct sk_buff *skb)
            send redirects to source routed frames.
            We don't send redirects to frames decapsulated from IPsec.
          */
-        if (skb->dev == dst->dev && dst->neighbour && opt->srcrt == 0 &&
-            !skb_sec_path(skb)) {
+        n = dst_get_neighbour(dst);
+        if (skb->dev == dst->dev && n && opt->srcrt == 0 && !skb_sec_path(skb)) {
                 struct in6_addr *target = NULL;
                 struct rt6_info *rt;
-                struct neighbour *n = dst->neighbour;
 
                 /*
                  *      incoming and outgoing devices are the same
@@ -920,8 +920,11 @@ out:
 static int ip6_dst_lookup_tail(struct sock *sk,
                                struct dst_entry **dst, struct flowi6 *fl6)
 {
-        int err;
         struct net *net = sock_net(sk);
+#ifdef CONFIG_IPV6_OPTIMISTIC_DAD
+        struct neighbour *n;
+#endif
+        int err;
 
         if (*dst == NULL)
                 *dst = ip6_route_output(net, sk, fl6);
@@ -947,7 +950,8 @@ static int ip6_dst_lookup_tail(struct sock *sk,
          * dst entry and replace it instead with the
          * dst entry of the nexthop router
          */
-        if ((*dst)->neighbour && !((*dst)->neighbour->nud_state & NUD_VALID)) {
+        n = dst_get_neighbour(*dst);
+        if (n && !(n->nud_state & NUD_VALID)) {
                 struct inet6_ifaddr *ifp;
                 struct flowi6 fl_gw6;
                 int redirect;
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index a997d414f525..9da6e02eaaeb 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -1238,7 +1238,7 @@ static void ndisc_router_discovery(struct sk_buff *skb)
         rt = rt6_get_dflt_router(&ipv6_hdr(skb)->saddr, skb->dev);
 
         if (rt)
-                neigh = rt->dst.neighbour;
+                neigh = dst_get_neighbour(&rt->dst);
 
         if (rt && lifetime == 0) {
                 neigh_clone(neigh);
@@ -1259,7 +1259,7 @@ static void ndisc_router_discovery(struct sk_buff *skb)
                         return;
                 }
 
-                neigh = rt->dst.neighbour;
+                neigh = dst_get_neighbour(&rt->dst);
                 if (neigh == NULL) {
                         ND_PRINTK0(KERN_ERR
                                    "ICMPv6 RA: %s() got default router without neighbour.\n",
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index c1515a3c1305..2998cb5be90b 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -356,7 +356,7 @@ out:
 #ifdef CONFIG_IPV6_ROUTER_PREF
 static void rt6_probe(struct rt6_info *rt)
 {
-        struct neighbour *neigh = rt ? rt->dst.neighbour : NULL;
+        struct neighbour *neigh = rt ? dst_get_neighbour(&rt->dst) : NULL;
         /*
          * Okay, this does not seem to be appropriate
          * for now, however, we need to check if it
@@ -404,7 +404,7 @@ static inline int rt6_check_dev(struct rt6_info *rt, int oif)
 
 static inline int rt6_check_neigh(struct rt6_info *rt)
 {
-        struct neighbour *neigh = rt->dst.neighbour;
+        struct neighbour *neigh = dst_get_neighbour(&rt->dst);
         int m;
         if (rt->rt6i_flags & RTF_NONEXTHOP ||
             !(rt->rt6i_flags & RTF_GATEWAY))
@@ -745,7 +745,7 @@ static struct rt6_info *rt6_alloc_cow(struct rt6_info *ort, const struct in6_add
                         dst_free(&rt->dst);
                         return NULL;
                 }
-                rt->dst.neighbour = neigh;
+                dst_set_neighbour(&rt->dst, neigh);
 
         }
 
@@ -760,7 +760,7 @@ static struct rt6_info *rt6_alloc_clone(struct rt6_info *ort, const struct in6_a
                 rt->rt6i_dst.plen = 128;
                 rt->rt6i_flags |= RTF_CACHE;
                 rt->dst.flags |= DST_HOST;
-                rt->dst.neighbour = neigh_clone(ort->dst.neighbour);
+                dst_set_neighbour(&rt->dst, neigh_clone(dst_get_neighbour(&ort->dst)));
         }
         return rt;
 }
@@ -794,7 +794,7 @@ restart:
         dst_hold(&rt->dst);
         read_unlock_bh(&table->tb6_lock);
 
-        if (!rt->dst.neighbour && !(rt->rt6i_flags & RTF_NONEXTHOP))
+        if (!dst_get_neighbour(&rt->dst) && !(rt->rt6i_flags & RTF_NONEXTHOP))
                 nrt = rt6_alloc_cow(rt, &fl6->daddr, &fl6->saddr);
         else if (!(rt->dst.flags & DST_HOST))
                 nrt = rt6_alloc_clone(rt, &fl6->daddr);
@@ -1058,7 +1058,7 @@ struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
         }
 
         rt->rt6i_idev     = idev;
-        rt->dst.neighbour  = neigh;
+        dst_set_neighbour(&rt->dst, neigh);
         atomic_set(&rt->dst.__refcnt, 1);
         dst_metric_set(&rt->dst, RTAX_HOPLIMIT, 255);
         rt->dst.output  = ip6_output;
@@ -1338,12 +1338,12 @@ int ip6_route_add(struct fib6_config *cfg)
                 rt->rt6i_prefsrc.plen = 0;
 
         if (cfg->fc_flags & (RTF_GATEWAY | RTF_NONEXTHOP)) {
-                rt->dst.neighbour = __neigh_lookup_errno(&nd_tbl, &rt->rt6i_gateway, dev);
-                if (IS_ERR(rt->dst.neighbour)) {
-                        err = PTR_ERR(rt->dst.neighbour);
-                        rt->dst.neighbour = NULL;
+                struct neighbour *n = __neigh_lookup_errno(&nd_tbl, &rt->rt6i_gateway, dev);
+                if (IS_ERR(n)) {
+                        err = PTR_ERR(n);
                         goto out;
                 }
+                dst_set_neighbour(&rt->dst, n);
         }
 
         rt->rt6i_flags = cfg->fc_flags;
@@ -1574,7 +1574,7 @@ void rt6_redirect(const struct in6_addr *dest, const struct in6_addr *src,
         dst_confirm(&rt->dst);
 
         /* Duplicate redirect: silently ignore. */
-        if (neigh == rt->dst.neighbour)
+        if (neigh == dst_get_neighbour(&rt->dst))
                 goto out;
 
         nrt = ip6_rt_copy(rt);
@@ -1590,7 +1590,7 @@ void rt6_redirect(const struct in6_addr *dest, const struct in6_addr *src,
         nrt->dst.flags |= DST_HOST;
 
         ipv6_addr_copy(&nrt->rt6i_gateway, (struct in6_addr*)neigh->primary_key);
-        nrt->dst.neighbour = neigh_clone(neigh);
+        dst_set_neighbour(&nrt->dst, neigh_clone(neigh));
 
         if (ip6_ins_rt(nrt))
                 goto out;
@@ -1670,7 +1670,7 @@ again:
            1. It is connected route. Action: COW
            2. It is gatewayed route or NONEXTHOP route. Action: clone it.
          */
-        if (!rt->dst.neighbour && !(rt->rt6i_flags & RTF_NONEXTHOP))
+        if (!dst_get_neighbour(&rt->dst) && !(rt->rt6i_flags & RTF_NONEXTHOP))
                 nrt = rt6_alloc_cow(rt, daddr, saddr);
         else
                 nrt = rt6_alloc_clone(rt, daddr);
@@ -2035,7 +2035,7 @@ struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
 
                 return ERR_CAST(neigh);
         }
-        rt->dst.neighbour = neigh;
+        dst_set_neighbour(&rt->dst, neigh);
 
         ipv6_addr_copy(&rt->rt6i_dst.addr, addr);
         rt->rt6i_dst.plen = 128;
@@ -2400,8 +2400,8 @@ static int rt6_fill_node(struct net *net,
         if (rtnetlink_put_metrics(skb, dst_metrics_ptr(&rt->dst)) < 0)
                 goto nla_put_failure;
 
-        if (rt->dst.neighbour)
-                NLA_PUT(skb, RTA_GATEWAY, 16, &rt->dst.neighbour->primary_key);
+        if (dst_get_neighbour(&rt->dst))
+                NLA_PUT(skb, RTA_GATEWAY, 16, &dst_get_neighbour(&rt->dst)->primary_key);
 
         if (rt->dst.dev)
                 NLA_PUT_U32(skb, RTA_OIF, rt->rt6i_dev->ifindex);
@@ -2585,6 +2585,7 @@ struct rt6_proc_arg
 static int rt6_info_route(struct rt6_info *rt, void *p_arg)
 {
         struct seq_file *m = p_arg;
+        struct neighbour *n;
 
         seq_printf(m, "%pi6 %02x ", &rt->rt6i_dst.addr, rt->rt6i_dst.plen);
 
@@ -2593,9 +2594,9 @@ static int rt6_info_route(struct rt6_info *rt, void *p_arg)
 #else
         seq_puts(m, "00000000000000000000000000000000 00 ");
 #endif
-
-        if (rt->dst.neighbour) {
-                seq_printf(m, "%pi6", rt->dst.neighbour->primary_key);
+        n = dst_get_neighbour(&rt->dst);
+        if (n) {
+                seq_printf(m, "%pi6", n->primary_key);
         } else {
                 seq_puts(m, "00000000000000000000000000000000");
         }
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 1cca5761aea9..07bf1085458f 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -677,7 +677,7 @@ static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb,
                 struct neighbour *neigh = NULL;
 
                 if (skb_dst(skb))
-                        neigh = skb_dst(skb)->neighbour;
+                        neigh = dst_get_neighbour(skb_dst(skb));
 
                 if (neigh == NULL) {
                         if (net_ratelimit())
@@ -702,7 +702,7 @@ static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb,
                 struct neighbour *neigh = NULL;
 
                 if (skb_dst(skb))
-                        neigh = skb_dst(skb)->neighbour;
+                        neigh = dst_get_neighbour(skb_dst(skb));
 
                 if (neigh == NULL) {
                         if (net_ratelimit())
diff --git a/net/sched/sch_teql.c b/net/sched/sch_teql.c
index 45cd30098e34..a3b7120fcc74 100644
--- a/net/sched/sch_teql.c
+++ b/net/sched/sch_teql.c
@@ -229,7 +229,7 @@ __teql_resolve(struct sk_buff *skb, struct sk_buff *skb_res, struct net_device *
 {
         struct netdev_queue *dev_queue = netdev_get_tx_queue(dev, 0);
         struct teql_sched_data *q = qdisc_priv(dev_queue->qdisc);
-        struct neighbour *mn = skb_dst(skb)->neighbour;
+        struct neighbour *mn = dst_get_neighbour(skb_dst(skb));
         struct neighbour *n = q->ncache;
 
         if (mn->tbl == NULL)
@@ -270,7 +270,7 @@ static inline int teql_resolve(struct sk_buff *skb,
 
         if (dev->header_ops == NULL ||
             skb_dst(skb) == NULL ||
-            skb_dst(skb)->neighbour == NULL)
+            dst_get_neighbour(skb_dst(skb)) == NULL)
                 return 0;
         return __teql_resolve(skb, skb_res, dev);
 }
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 5ce74a385525..7803eb6af414 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -1497,7 +1497,7 @@ static struct dst_entry *xfrm_bundle_create(struct xfrm_policy *policy,
                 goto free_dst;
 
         /* Copy neighbour for reachability confirmation */
-        dst0->neighbour = neigh_clone(dst->neighbour);
+        dst_set_neighbour(dst0, neigh_clone(dst_get_neighbour(dst)));
 
         xfrm_init_path((struct xfrm_dst *)dst0, dst, nfheader_len);
         xfrm_init_pmtu(dst_prev);