net: Abstract dst->neighbour accesses behind helpers.

dst_{get,set}_neighbour()

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

17 files changed, 85 insertions, 72 deletions

diff --git a/net/atm/clip.c b/net/atm/clip.c
index c6cd531..4bc8c67 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 1fe43fd..b1a5f97 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 4aacc14..14b33baf 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 cefb8e5..8fab9b0 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 5d61e89..0dc3fe6 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 3b6400d..9bd45fc 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 8871067..d7bb94c 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 db296a9..be27e60 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 bcf9bb5..1d4cd3b 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 48cd03d..a06c53c 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 158df23..54a4678 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 eb50bb0..8db0e48 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 a997d41..9da6e02 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 c1515a3..2998cb5 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 1cca576..07bf108 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 45cd300..a3b7120 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 5ce74a3..7803eb6 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);