1 files changed, 181 insertions, 153 deletions

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 8473016bba4a..07361dfa8085 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -62,22 +62,11 @@
 #include <linux/sysctl.h>
 #endif
 
-/* Set to 3 to get tracing. */
-#define RT6_DEBUG 2
-
-#if RT6_DEBUG >= 3
-#define RDBG(x) printk x
-#define RT6_TRACE(x...) printk(KERN_DEBUG x)
-#else
-#define RDBG(x)
-#define RT6_TRACE(x...) do { ; } while (0)
-#endif
-
 static struct rt6_info *ip6_rt_copy(const struct rt6_info *ort,
 				    const struct in6_addr *dest);
 static struct dst_entry	*ip6_dst_check(struct dst_entry *dst, u32 cookie);
 static unsigned int	 ip6_default_advmss(const struct dst_entry *dst);
-static unsigned int	 ip6_default_mtu(const struct dst_entry *dst);
+static unsigned int	 ip6_mtu(const struct dst_entry *dst);
 static struct dst_entry *ip6_negative_advice(struct dst_entry *);
 static void		ip6_dst_destroy(struct dst_entry *);
 static void		ip6_dst_ifdown(struct dst_entry *,
@@ -134,7 +123,23 @@ static u32 *ipv6_cow_metrics(struct dst_entry *dst, unsigned long old)
 
 static struct neighbour *ip6_neigh_lookup(const struct dst_entry *dst, const void *daddr)
 {
-	return __neigh_lookup_errno(&nd_tbl, daddr, dst->dev);
+	struct neighbour *n = __ipv6_neigh_lookup(&nd_tbl, dst->dev, daddr);
+	if (n)
+		return n;
+	return neigh_create(&nd_tbl, daddr, dst->dev);
+}
+
+static int rt6_bind_neighbour(struct rt6_info *rt, struct net_device *dev)
+{
+	struct neighbour *n = __ipv6_neigh_lookup(&nd_tbl, dev, &rt->rt6i_gateway);
+	if (!n) {
+		n = neigh_create(&nd_tbl, &rt->rt6i_gateway, dev);
+		if (IS_ERR(n))
+			return PTR_ERR(n);
+	}
+	dst_set_neighbour(&rt->dst, n);
+
+	return 0;
 }
 
 static struct dst_ops ip6_dst_ops_template = {
@@ -144,7 +149,7 @@ static struct dst_ops ip6_dst_ops_template = {
 	.gc_thresh		=	1024,
 	.check			=	ip6_dst_check,
 	.default_advmss		=	ip6_default_advmss,
-	.default_mtu		=	ip6_default_mtu,
+	.mtu			=	ip6_mtu,
 	.cow_metrics		=	ipv6_cow_metrics,
 	.destroy		=	ip6_dst_destroy,
 	.ifdown			=	ip6_dst_ifdown,
@@ -155,9 +160,11 @@ static struct dst_ops ip6_dst_ops_template = {
 	.neigh_lookup		=	ip6_neigh_lookup,
 };
 
-static unsigned int ip6_blackhole_default_mtu(const struct dst_entry *dst)
+static unsigned int ip6_blackhole_mtu(const struct dst_entry *dst)
 {
-	return 0;
+	unsigned int mtu = dst_metric_raw(dst, RTAX_MTU);
+
+	return mtu ? : dst->dev->mtu;
 }
 
 static void ip6_rt_blackhole_update_pmtu(struct dst_entry *dst, u32 mtu)
@@ -175,7 +182,7 @@ static struct dst_ops ip6_dst_blackhole_ops = {
 	.protocol		=	cpu_to_be16(ETH_P_IPV6),
 	.destroy		=	ip6_dst_destroy,
 	.check			=	ip6_dst_check,
-	.default_mtu		=	ip6_blackhole_default_mtu,
+	.mtu			=	ip6_blackhole_mtu,
 	.default_advmss		=	ip6_default_advmss,
 	.update_pmtu		=	ip6_rt_blackhole_update_pmtu,
 	.cow_metrics		=	ip6_rt_blackhole_cow_metrics,
@@ -245,9 +252,9 @@ static inline struct rt6_info *ip6_dst_alloc(struct dst_ops *ops,
 {
 	struct rt6_info *rt = dst_alloc(ops, dev, 0, 0, flags);
 
-	if (rt != NULL)
+	if (rt)
 		memset(&rt->rt6i_table, 0,
-			sizeof(*rt) - sizeof(struct dst_entry));
+		       sizeof(*rt) - sizeof(struct dst_entry));
 
 	return rt;
 }
@@ -261,7 +268,7 @@ static void ip6_dst_destroy(struct dst_entry *dst)
 	if (!(rt->dst.flags & DST_HOST))
 		dst_destroy_metrics_generic(dst);
 
-	if (idev != NULL) {
+	if (idev) {
 		rt->rt6i_idev = NULL;
 		in6_dev_put(idev);
 	}
@@ -297,10 +304,10 @@ static void ip6_dst_ifdown(struct dst_entry *dst, struct net_device *dev,
 	struct net_device *loopback_dev =
 		dev_net(dev)->loopback_dev;
 
-	if (dev != loopback_dev && idev != NULL && idev->dev == dev) {
+	if (dev != loopback_dev && idev && idev->dev == dev) {
 		struct inet6_dev *loopback_idev =
 			in6_dev_get(loopback_dev);
-		if (loopback_idev != NULL) {
+		if (loopback_idev) {
 			rt->rt6i_idev = loopback_idev;
 			in6_dev_put(idev);
 		}
@@ -310,7 +317,7 @@ static void ip6_dst_ifdown(struct dst_entry *dst, struct net_device *dev,
 static __inline__ int rt6_check_expired(const struct rt6_info *rt)
 {
 	return (rt->rt6i_flags & RTF_EXPIRES) &&
-		time_after(jiffies, rt->rt6i_expires);
+		time_after(jiffies, rt->dst.expires);
 }
 
 static inline int rt6_need_strict(const struct in6_addr *daddr)
@@ -336,13 +343,13 @@ static inline struct rt6_info *rt6_device_match(struct net *net,
 		goto out;
 
 	for (sprt = rt; sprt; sprt = sprt->dst.rt6_next) {
-		struct net_device *dev = sprt->rt6i_dev;
+		struct net_device *dev = sprt->dst.dev;
 
 		if (oif) {
 			if (dev->ifindex == oif)
 				return sprt;
 			if (dev->flags & IFF_LOOPBACK) {
-				if (sprt->rt6i_idev == NULL ||
+				if (!sprt->rt6i_idev ||
 				    sprt->rt6i_idev->dev->ifindex != oif) {
 					if (flags & RT6_LOOKUP_F_IFACE && oif)
 						continue;
@@ -383,7 +390,7 @@ static void rt6_probe(struct rt6_info *rt)
 	 * to no more than one per minute.
 	 */
 	rcu_read_lock();
-	neigh = rt ? dst_get_neighbour(&rt->dst) : NULL;
+	neigh = rt ? dst_get_neighbour_noref(&rt->dst) : NULL;
 	if (!neigh || (neigh->nud_state & NUD_VALID))
 		goto out;
 	read_lock_bh(&neigh->lock);
@@ -397,7 +404,7 @@ static void rt6_probe(struct rt6_info *rt)
 
 		target = (struct in6_addr *)&neigh->primary_key;
 		addrconf_addr_solict_mult(target, &mcaddr);
-		ndisc_send_ns(rt->rt6i_dev, NULL, target, &mcaddr, NULL);
+		ndisc_send_ns(rt->dst.dev, NULL, target, &mcaddr, NULL);
 	} else {
 		read_unlock_bh(&neigh->lock);
 	}
@@ -415,7 +422,7 @@ static inline void rt6_probe(struct rt6_info *rt)
  */
 static inline int rt6_check_dev(struct rt6_info *rt, int oif)
 {
-	struct net_device *dev = rt->rt6i_dev;
+	struct net_device *dev = rt->dst.dev;
 	if (!oif || dev->ifindex == oif)
 		return 2;
 	if ((dev->flags & IFF_LOOPBACK) &&
@@ -430,7 +437,7 @@ static inline int rt6_check_neigh(struct rt6_info *rt)
 	int m;
 
 	rcu_read_lock();
-	neigh = dst_get_neighbour(&rt->dst);
+	neigh = dst_get_neighbour_noref(&rt->dst);
 	if (rt->rt6i_flags & RTF_NONEXTHOP ||
 	    !(rt->rt6i_flags & RTF_GATEWAY))
 		m = 1;
@@ -516,9 +523,6 @@ static struct rt6_info *rt6_select(struct fib6_node *fn, int oif, int strict)
 	struct rt6_info *match, *rt0;
 	struct net *net;
 
-	RT6_TRACE("%s(fn->leaf=%p, oif=%d)\n",
-		  __func__, fn->leaf, oif);
-
 	rt0 = fn->rr_ptr;
 	if (!rt0)
 		fn->rr_ptr = rt0 = fn->leaf;
@@ -537,10 +541,7 @@ static struct rt6_info *rt6_select(struct fib6_node *fn, int oif, int strict)
 			fn->rr_ptr = next;
 	}
 
-	RT6_TRACE("%s() => %p\n",
-		  __func__, match);
-
-	net = dev_net(rt0->rt6i_dev);
+	net = dev_net(rt0->dst.dev);
 	return match ? match : net->ipv6.ip6_null_entry;
 }
 
@@ -609,7 +610,7 @@ int rt6_route_rcv(struct net_device *dev, u8 *opt, int len,
 		if (!addrconf_finite_timeout(lifetime)) {
 			rt->rt6i_flags &= ~RTF_EXPIRES;
 		} else {
-			rt->rt6i_expires = jiffies + HZ * lifetime;
+			rt->dst.expires = jiffies + HZ * lifetime;
 			rt->rt6i_flags |= RTF_EXPIRES;
 		}
 		dst_release(&rt->dst);
@@ -634,7 +635,7 @@ do { \
 				goto restart; \
 		} \
 	} \
-} while(0)
+} while (0)
 
 static struct rt6_info *ip6_pol_route_lookup(struct net *net,
 					     struct fib6_table *table,
@@ -656,6 +657,13 @@ out:
 
 }
 
+struct dst_entry * ip6_route_lookup(struct net *net, struct flowi6 *fl6,
+				    int flags)
+{
+	return fib6_rule_lookup(net, fl6, flags, ip6_pol_route_lookup);
+}
+EXPORT_SYMBOL_GPL(ip6_route_lookup);
+
 struct rt6_info *rt6_lookup(struct net *net, const struct in6_addr *daddr,
 			    const struct in6_addr *saddr, int oif, int strict)
 {
@@ -704,7 +712,7 @@ static int __ip6_ins_rt(struct rt6_info *rt, struct nl_info *info)
 int ip6_ins_rt(struct rt6_info *rt)
 {
 	struct nl_info info = {
-		.nl_net = dev_net(rt->rt6i_dev),
+		.nl_net = dev_net(rt->dst.dev),
 	};
 	return __ip6_ins_rt(rt, &info);
 }
@@ -722,29 +730,27 @@ static struct rt6_info *rt6_alloc_cow(const struct rt6_info *ort,
 	rt = ip6_rt_copy(ort, daddr);
 
 	if (rt) {
-		struct neighbour *neigh;
 		int attempts = !in_softirq();
 
-		if (!(rt->rt6i_flags&RTF_GATEWAY)) {
-			if (rt->rt6i_dst.plen != 128 &&
+		if (!(rt->rt6i_flags & RTF_GATEWAY)) {
+			if (ort->rt6i_dst.plen != 128 &&
 			    ipv6_addr_equal(&ort->rt6i_dst.addr, daddr))
 				rt->rt6i_flags |= RTF_ANYCAST;
-			ipv6_addr_copy(&rt->rt6i_gateway, daddr);
+			rt->rt6i_gateway = *daddr;
 		}
 
 		rt->rt6i_flags |= RTF_CACHE;
 
 #ifdef CONFIG_IPV6_SUBTREES
 		if (rt->rt6i_src.plen && saddr) {
-			ipv6_addr_copy(&rt->rt6i_src.addr, saddr);
+			rt->rt6i_src.addr = *saddr;
 			rt->rt6i_src.plen = 128;
 		}
 #endif
 
 	retry:
-		neigh = ndisc_get_neigh(rt->rt6i_dev, &rt->rt6i_gateway);
-		if (IS_ERR(neigh)) {
-			struct net *net = dev_net(rt->rt6i_dev);
+		if (rt6_bind_neighbour(rt, rt->dst.dev)) {
+			struct net *net = dev_net(rt->dst.dev);
 			int saved_rt_min_interval =
 				net->ipv6.sysctl.ip6_rt_gc_min_interval;
 			int saved_rt_elasticity =
@@ -769,8 +775,6 @@ static struct rt6_info *rt6_alloc_cow(const struct rt6_info *ort,
 			dst_free(&rt->dst);
 			return NULL;
 		}
-		dst_set_neighbour(&rt->dst, neigh);
-
 	}
 
 	return rt;
@@ -783,7 +787,7 @@ static struct rt6_info *rt6_alloc_clone(struct rt6_info *ort,
 
 	if (rt) {
 		rt->rt6i_flags |= RTF_CACHE;
-		dst_set_neighbour(&rt->dst, neigh_clone(dst_get_neighbour_raw(&ort->dst)));
+		dst_set_neighbour(&rt->dst, neigh_clone(dst_get_neighbour_noref_raw(&ort->dst)));
 	}
 	return rt;
 }
@@ -817,7 +821,7 @@ restart:
 	dst_hold(&rt->dst);
 	read_unlock_bh(&table->tb6_lock);
 
-	if (!dst_get_neighbour_raw(&rt->dst) && !(rt->rt6i_flags & RTF_NONEXTHOP))
+	if (!dst_get_neighbour_noref_raw(&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);
@@ -873,7 +877,7 @@ void ip6_route_input(struct sk_buff *skb)
 		.flowi6_iif = skb->dev->ifindex,
 		.daddr = iph->daddr,
 		.saddr = iph->saddr,
-		.flowlabel = (* (__be32 *) iph)&IPV6_FLOWINFO_MASK,
+		.flowlabel = (* (__be32 *) iph) & IPV6_FLOWINFO_MASK,
 		.flowi6_mark = skb->mark,
 		.flowi6_proto = iph->nexthdr,
 	};
@@ -930,9 +934,9 @@ struct dst_entry *ip6_blackhole_route(struct net *net, struct dst_entry *dst_ori
 		rt->rt6i_idev = ort->rt6i_idev;
 		if (rt->rt6i_idev)
 			in6_dev_hold(rt->rt6i_idev);
-		rt->rt6i_expires = 0;
+		rt->dst.expires = 0;
 
-		ipv6_addr_copy(&rt->rt6i_gateway, &ort->rt6i_gateway);
+		rt->rt6i_gateway = ort->rt6i_gateway;
 		rt->rt6i_flags = ort->rt6i_flags & ~RTF_EXPIRES;
 		rt->rt6i_metric = 0;
 
@@ -995,7 +999,7 @@ static void ip6_link_failure(struct sk_buff *skb)
 
 	rt = (struct rt6_info *) skb_dst(skb);
 	if (rt) {
-		if (rt->rt6i_flags&RTF_CACHE) {
+		if (rt->rt6i_flags & RTF_CACHE) {
 			dst_set_expires(&rt->dst, 0);
 			rt->rt6i_flags |= RTF_EXPIRES;
 		} else if (rt->rt6i_node && (rt->rt6i_flags & RTF_DEFAULT))
@@ -1041,10 +1045,15 @@ static unsigned int ip6_default_advmss(const struct dst_entry *dst)
 	return mtu;
 }
 
-static unsigned int ip6_default_mtu(const struct dst_entry *dst)
+static unsigned int ip6_mtu(const struct dst_entry *dst)
 {
-	unsigned int mtu = IPV6_MIN_MTU;
 	struct inet6_dev *idev;
+	unsigned int mtu = dst_metric_raw(dst, RTAX_MTU);
+
+	if (mtu)
+		return mtu;
+
+	mtu = IPV6_MIN_MTU;
 
 	rcu_read_lock();
 	idev = __in6_dev_get(dst->dev);
@@ -1060,34 +1069,38 @@ static DEFINE_SPINLOCK(icmp6_dst_lock);
 
 struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
 				  struct neighbour *neigh,
-				  const struct in6_addr *addr)
+				  struct flowi6 *fl6)
 {
+	struct dst_entry *dst;
 	struct rt6_info *rt;
 	struct inet6_dev *idev = in6_dev_get(dev);
 	struct net *net = dev_net(dev);
 
-	if (unlikely(idev == NULL))
+	if (unlikely(!idev))
 		return NULL;
 
 	rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops, dev, 0);
-	if (unlikely(rt == NULL)) {
+	if (unlikely(!rt)) {
 		in6_dev_put(idev);
+		dst = ERR_PTR(-ENOMEM);
 		goto out;
 	}
 
 	if (neigh)
 		neigh_hold(neigh);
 	else {
-		neigh = ndisc_get_neigh(dev, addr);
-		if (IS_ERR(neigh))
-			neigh = NULL;
+		neigh = ip6_neigh_lookup(&rt->dst, &fl6->daddr);
+		if (IS_ERR(neigh)) {
+			dst_free(&rt->dst);
+			return ERR_CAST(neigh);
+		}
 	}
 
 	rt->dst.flags |= DST_HOST;
 	rt->dst.output  = ip6_output;
 	dst_set_neighbour(&rt->dst, neigh);
 	atomic_set(&rt->dst.__refcnt, 1);
-	ipv6_addr_copy(&rt->rt6i_dst.addr, addr);
+	rt->rt6i_dst.addr = fl6->daddr;
 	rt->rt6i_dst.plen = 128;
 	rt->rt6i_idev     = idev;
 	dst_metric_set(&rt->dst, RTAX_HOPLIMIT, 255);
@@ -1099,8 +1112,10 @@ struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
 
 	fib6_force_start_gc(net);
 
+	dst = xfrm_lookup(net, &rt->dst, flowi6_to_flowi(fl6), NULL, 0);
+
 out:
-	return &rt->dst;
+	return dst;
 }
 
 int icmp6_dst_gc(void)
@@ -1230,21 +1245,30 @@ int ip6_route_add(struct fib6_config *cfg)
 	if (cfg->fc_metric == 0)
 		cfg->fc_metric = IP6_RT_PRIO_USER;
 
-	table = fib6_new_table(net, cfg->fc_table);
-	if (table == NULL) {
-		err = -ENOBUFS;
-		goto out;
+	err = -ENOBUFS;
+	if (cfg->fc_nlinfo.nlh &&
+	    !(cfg->fc_nlinfo.nlh->nlmsg_flags & NLM_F_CREATE)) {
+		table = fib6_get_table(net, cfg->fc_table);
+		if (!table) {
+			printk(KERN_WARNING "IPv6: NLM_F_CREATE should be specified when creating new route\n");
+			table = fib6_new_table(net, cfg->fc_table);
+		}
+	} else {
+		table = fib6_new_table(net, cfg->fc_table);
 	}
 
+	if (!table)
+		goto out;
+
 	rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops, NULL, DST_NOCOUNT);
 
-	if (rt == NULL) {
+	if (!rt) {
 		err = -ENOMEM;
 		goto out;
 	}
 
 	rt->dst.obsolete = -1;
-	rt->rt6i_expires = (cfg->fc_flags & RTF_EXPIRES) ?
+	rt->dst.expires = (cfg->fc_flags & RTF_EXPIRES) ?
 				jiffies + clock_t_to_jiffies(cfg->fc_expires) :
 				0;
 
@@ -1287,8 +1311,9 @@ int ip6_route_add(struct fib6_config *cfg)
 	   they would result in kernel looping; promote them to reject routes
 	 */
 	if ((cfg->fc_flags & RTF_REJECT) ||
-	    (dev && (dev->flags&IFF_LOOPBACK) && !(addr_type&IPV6_ADDR_LOOPBACK)
-					      && !(cfg->fc_flags&RTF_LOCAL))) {
+	    (dev && (dev->flags & IFF_LOOPBACK) &&
+	     !(addr_type & IPV6_ADDR_LOOPBACK) &&
+	     !(cfg->fc_flags & RTF_LOCAL))) {
 		/* hold loopback dev/idev if we haven't done so. */
 		if (dev != net->loopback_dev) {
 			if (dev) {
@@ -1315,7 +1340,7 @@ int ip6_route_add(struct fib6_config *cfg)
 		int gwa_type;
 
 		gw_addr = &cfg->fc_gateway;
-		ipv6_addr_copy(&rt->rt6i_gateway, gw_addr);
+		rt->rt6i_gateway = *gw_addr;
 		gwa_type = ipv6_addr_type(gw_addr);
 
 		if (gwa_type != (IPV6_ADDR_LINKLOCAL|IPV6_ADDR_UNICAST)) {
@@ -1329,26 +1354,26 @@ int ip6_route_add(struct fib6_config *cfg)
 			   some exceptions. --ANK
 			 */
 			err = -EINVAL;
-			if (!(gwa_type&IPV6_ADDR_UNICAST))
+			if (!(gwa_type & IPV6_ADDR_UNICAST))
 				goto out;
 
 			grt = rt6_lookup(net, gw_addr, NULL, cfg->fc_ifindex, 1);
 
 			err = -EHOSTUNREACH;
-			if (grt == NULL)
+			if (!grt)
 				goto out;
 			if (dev) {
-				if (dev != grt->rt6i_dev) {
+				if (dev != grt->dst.dev) {
 					dst_release(&grt->dst);
 					goto out;
 				}
 			} else {
-				dev = grt->rt6i_dev;
+				dev = grt->dst.dev;
 				idev = grt->rt6i_idev;
 				dev_hold(dev);
 				in6_dev_hold(grt->rt6i_idev);
 			}
-			if (!(grt->rt6i_flags&RTF_GATEWAY))
+			if (!(grt->rt6i_flags & RTF_GATEWAY))
 				err = 0;
 			dst_release(&grt->dst);
 
@@ -1356,12 +1381,12 @@ int ip6_route_add(struct fib6_config *cfg)
 				goto out;
 		}
 		err = -EINVAL;
-		if (dev == NULL || (dev->flags&IFF_LOOPBACK))
+		if (!dev || (dev->flags & IFF_LOOPBACK))
 			goto out;
 	}
 
 	err = -ENODEV;
-	if (dev == NULL)
+	if (!dev)
 		goto out;
 
 	if (!ipv6_addr_any(&cfg->fc_prefsrc)) {
@@ -1369,18 +1394,15 @@ int ip6_route_add(struct fib6_config *cfg)
 			err = -EINVAL;
 			goto out;
 		}
-		ipv6_addr_copy(&rt->rt6i_prefsrc.addr, &cfg->fc_prefsrc);
+		rt->rt6i_prefsrc.addr = cfg->fc_prefsrc;
 		rt->rt6i_prefsrc.plen = 128;
 	} else
 		rt->rt6i_prefsrc.plen = 0;
 
 	if (cfg->fc_flags & (RTF_GATEWAY | RTF_NONEXTHOP)) {
-		struct neighbour *n = __neigh_lookup_errno(&nd_tbl, &rt->rt6i_gateway, dev);
-		if (IS_ERR(n)) {
-			err = PTR_ERR(n);
+		err = rt6_bind_neighbour(rt, dev);
+		if (err)
 			goto out;
-		}
-		dst_set_neighbour(&rt->dst, n);
 	}
 
 	rt->rt6i_flags = cfg->fc_flags;
@@ -1426,7 +1448,7 @@ static int __ip6_del_rt(struct rt6_info *rt, struct nl_info *info)
 {
 	int err;
 	struct fib6_table *table;
-	struct net *net = dev_net(rt->rt6i_dev);
+	struct net *net = dev_net(rt->dst.dev);
 
 	if (rt == net->ipv6.ip6_null_entry)
 		return -ENOENT;
@@ -1445,7 +1467,7 @@ static int __ip6_del_rt(struct rt6_info *rt, struct nl_info *info)
 int ip6_del_rt(struct rt6_info *rt)
 {
 	struct nl_info info = {
-		.nl_net = dev_net(rt->rt6i_dev),
+		.nl_net = dev_net(rt->dst.dev),
 	};
 	return __ip6_del_rt(rt, &info);
 }
@@ -1458,7 +1480,7 @@ static int ip6_route_del(struct fib6_config *cfg)
 	int err = -ESRCH;
 
 	table = fib6_get_table(cfg->fc_nlinfo.nl_net, cfg->fc_table);
-	if (table == NULL)
+	if (!table)
 		return err;
 
 	read_lock_bh(&table->tb6_lock);
@@ -1470,8 +1492,8 @@ static int ip6_route_del(struct fib6_config *cfg)
 	if (fn) {
 		for (rt = fn->leaf; rt; rt = rt->dst.rt6_next) {
 			if (cfg->fc_ifindex &&
-			    (rt->rt6i_dev == NULL ||
-			     rt->rt6i_dev->ifindex != cfg->fc_ifindex))
+			    (!rt->dst.dev ||
+			     rt->dst.dev->ifindex != cfg->fc_ifindex))
 				continue;
 			if (cfg->fc_flags & RTF_GATEWAY &&
 			    !ipv6_addr_equal(&cfg->fc_gateway, &rt->rt6i_gateway))
@@ -1533,7 +1555,7 @@ restart:
 			continue;
 		if (!(rt->rt6i_flags & RTF_GATEWAY))
 			continue;
-		if (fl6->flowi6_oif != rt->rt6i_dev->ifindex)
+		if (fl6->flowi6_oif != rt->dst.dev->ifindex)
 			continue;
 		if (!ipv6_addr_equal(&rdfl->gateway, &rt->rt6i_gateway))
 			continue;
@@ -1566,7 +1588,7 @@ static struct rt6_info *ip6_route_redirect(const struct in6_addr *dest,
 		},
 	};
 
-	ipv6_addr_copy(&rdfl.gateway, gateway);
+	rdfl.gateway = *gateway;
 
 	if (rt6_need_strict(dest))
 		flags |= RT6_LOOKUP_F_IFACE;
@@ -1611,18 +1633,18 @@ void rt6_redirect(const struct in6_addr *dest, const struct in6_addr *src,
 	dst_confirm(&rt->dst);
 
 	/* Duplicate redirect: silently ignore. */
-	if (neigh == dst_get_neighbour_raw(&rt->dst))
+	if (neigh == dst_get_neighbour_noref_raw(&rt->dst))
 		goto out;
 
 	nrt = ip6_rt_copy(rt, dest);
-	if (nrt == NULL)
+	if (!nrt)
 		goto out;
 
 	nrt->rt6i_flags = RTF_GATEWAY|RTF_UP|RTF_DYNAMIC|RTF_CACHE;
 	if (on_link)
 		nrt->rt6i_flags &= ~RTF_GATEWAY;
 
-	ipv6_addr_copy(&nrt->rt6i_gateway, (struct in6_addr*)neigh->primary_key);
+	nrt->rt6i_gateway = *(struct in6_addr *)neigh->primary_key;
 	dst_set_neighbour(&nrt->dst, neigh_clone(neigh));
 
 	if (ip6_ins_rt(nrt))
@@ -1632,7 +1654,7 @@ void rt6_redirect(const struct in6_addr *dest, const struct in6_addr *src,
 	netevent.new = &nrt->dst;
 	call_netevent_notifiers(NETEVENT_REDIRECT, &netevent);
 
-	if (rt->rt6i_flags&RTF_CACHE) {
+	if (rt->rt6i_flags & RTF_CACHE) {
 		ip6_del_rt(rt);
 		return;
 	}
@@ -1653,7 +1675,7 @@ static void rt6_do_pmtu_disc(const struct in6_addr *daddr, const struct in6_addr
 	int allfrag = 0;
 again:
 	rt = rt6_lookup(net, daddr, saddr, ifindex, 0);
-	if (rt == NULL)
+	if (!rt)
 		return;
 
 	if (rt6_check_expired(rt)) {
@@ -1703,7 +1725,7 @@ again:
 	   1. It is connected route. Action: COW
 	   2. It is gatewayed route or NONEXTHOP route. Action: clone it.
 	 */
-	if (!dst_get_neighbour_raw(&rt->dst) && !(rt->rt6i_flags & RTF_NONEXTHOP))
+	if (!dst_get_neighbour_noref_raw(&rt->dst) && !(rt->rt6i_flags & RTF_NONEXTHOP))
 		nrt = rt6_alloc_cow(rt, daddr, saddr);
 	else
 		nrt = rt6_alloc_clone(rt, daddr);
@@ -1759,7 +1781,7 @@ void rt6_pmtu_discovery(const struct in6_addr *daddr, const struct in6_addr *sad
 static struct rt6_info *ip6_rt_copy(const struct rt6_info *ort,
 				    const struct in6_addr *dest)
 {
-	struct net *net = dev_net(ort->rt6i_dev);
+	struct net *net = dev_net(ort->dst.dev);
 	struct rt6_info *rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops,
 					    ort->dst.dev, 0);
 
@@ -1768,7 +1790,7 @@ static struct rt6_info *ip6_rt_copy(const struct rt6_info *ort,
 		rt->dst.output = ort->dst.output;
 		rt->dst.flags |= DST_HOST;
 
-		ipv6_addr_copy(&rt->rt6i_dst.addr, dest);
+		rt->rt6i_dst.addr = *dest;
 		rt->rt6i_dst.plen = 128;
 		dst_copy_metrics(&rt->dst, &ort->dst);
 		rt->dst.error = ort->dst.error;
@@ -1776,9 +1798,9 @@ static struct rt6_info *ip6_rt_copy(const struct rt6_info *ort,
 		if (rt->rt6i_idev)
 			in6_dev_hold(rt->rt6i_idev);
 		rt->dst.lastuse = jiffies;
-		rt->rt6i_expires = 0;
+		rt->dst.expires = 0;
 
-		ipv6_addr_copy(&rt->rt6i_gateway, &ort->rt6i_gateway);
+		rt->rt6i_gateway = ort->rt6i_gateway;
 		rt->rt6i_flags = ort->rt6i_flags & ~RTF_EXPIRES;
 		rt->rt6i_metric = 0;
 
@@ -1801,7 +1823,7 @@ static struct rt6_info *rt6_get_route_info(struct net *net,
 	struct fib6_table *table;
 
 	table = fib6_get_table(net, RT6_TABLE_INFO);
-	if (table == NULL)
+	if (!table)
 		return NULL;
 
 	write_lock_bh(&table->tb6_lock);
@@ -1810,7 +1832,7 @@ static struct rt6_info *rt6_get_route_info(struct net *net,
 		goto out;
 
 	for (rt = fn->leaf; rt; rt = rt->dst.rt6_next) {
-		if (rt->rt6i_dev->ifindex != ifindex)
+		if (rt->dst.dev->ifindex != ifindex)
 			continue;
 		if ((rt->rt6i_flags & (RTF_ROUTEINFO|RTF_GATEWAY)) != (RTF_ROUTEINFO|RTF_GATEWAY))
 			continue;
@@ -1841,8 +1863,8 @@ static struct rt6_info *rt6_add_route_info(struct net *net,
 		.fc_nlinfo.nl_net = net,
 	};
 
-	ipv6_addr_copy(&cfg.fc_dst, prefix);
-	ipv6_addr_copy(&cfg.fc_gateway, gwaddr);
+	cfg.fc_dst = *prefix;
+	cfg.fc_gateway = *gwaddr;
 
 	/* We should treat it as a default route if prefix length is 0. */
 	if (!prefixlen)
@@ -1860,12 +1882,12 @@ struct rt6_info *rt6_get_dflt_router(const struct in6_addr *addr, struct net_dev
 	struct fib6_table *table;
 
 	table = fib6_get_table(dev_net(dev), RT6_TABLE_DFLT);
-	if (table == NULL)
+	if (!table)
 		return NULL;
 
 	write_lock_bh(&table->tb6_lock);
 	for (rt = table->tb6_root.leaf; rt; rt=rt->dst.rt6_next) {
-		if (dev == rt->rt6i_dev &&
+		if (dev == rt->dst.dev &&
 		    ((rt->rt6i_flags & (RTF_ADDRCONF | RTF_DEFAULT)) == (RTF_ADDRCONF | RTF_DEFAULT)) &&
 		    ipv6_addr_equal(&rt->rt6i_gateway, addr))
 			break;
@@ -1891,7 +1913,7 @@ struct rt6_info *rt6_add_dflt_router(const struct in6_addr *gwaddr,
 		.fc_nlinfo.nl_net = dev_net(dev),
 	};
 
-	ipv6_addr_copy(&cfg.fc_gateway, gwaddr);
+	cfg.fc_gateway = *gwaddr;
 
 	ip6_route_add(&cfg);
 
@@ -1905,7 +1927,7 @@ void rt6_purge_dflt_routers(struct net *net)
 
 	/* NOTE: Keep consistent with rt6_get_dflt_router */
 	table = fib6_get_table(net, RT6_TABLE_DFLT);
-	if (table == NULL)
+	if (!table)
 		return;
 
 restart:
@@ -1937,9 +1959,9 @@ static void rtmsg_to_fib6_config(struct net *net,
 
 	cfg->fc_nlinfo.nl_net = net;
 
-	ipv6_addr_copy(&cfg->fc_dst, &rtmsg->rtmsg_dst);
-	ipv6_addr_copy(&cfg->fc_src, &rtmsg->rtmsg_src);
-	ipv6_addr_copy(&cfg->fc_gateway, &rtmsg->rtmsg_gateway);
+	cfg->fc_dst = rtmsg->rtmsg_dst;
+	cfg->fc_src = rtmsg->rtmsg_src;
+	cfg->fc_gateway = rtmsg->rtmsg_gateway;
 }
 
 int ipv6_route_ioctl(struct net *net, unsigned int cmd, void __user *arg)
@@ -2038,14 +2060,14 @@ static int ip6_pkt_prohibit_out(struct sk_buff *skb)
 
 struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
 				    const struct in6_addr *addr,
-				    int anycast)
+				    bool anycast)
 {
 	struct net *net = dev_net(idev->dev);
 	struct rt6_info *rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops,
 					    net->loopback_dev, 0);
-	struct neighbour *neigh;
+	int err;
 
-	if (rt == NULL) {
+	if (!rt) {
 		if (net_ratelimit())
 			pr_warning("IPv6:  Maximum number of routes reached,"
 				   " consider increasing route/max_size.\n");
@@ -2065,15 +2087,13 @@ struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
 		rt->rt6i_flags |= RTF_ANYCAST;
 	else
 		rt->rt6i_flags |= RTF_LOCAL;
-	neigh = ndisc_get_neigh(rt->rt6i_dev, &rt->rt6i_gateway);
-	if (IS_ERR(neigh)) {
+	err = rt6_bind_neighbour(rt, rt->dst.dev);
+	if (err) {
 		dst_free(&rt->dst);
-
-		return ERR_CAST(neigh);
+		return ERR_PTR(err);
 	}
-	dst_set_neighbour(&rt->dst, neigh);
 
-	ipv6_addr_copy(&rt->rt6i_dst.addr, addr);
+	rt->rt6i_dst.addr = *addr;
 	rt->rt6i_dst.plen = 128;
 	rt->rt6i_table = fib6_get_table(net, RT6_TABLE_LOCAL);
 
@@ -2091,7 +2111,7 @@ int ip6_route_get_saddr(struct net *net,
 	struct inet6_dev *idev = ip6_dst_idev((struct dst_entry*)rt);
 	int err = 0;
 	if (rt->rt6i_prefsrc.plen)
-		ipv6_addr_copy(saddr, &rt->rt6i_prefsrc.addr);
+		*saddr = rt->rt6i_prefsrc.addr;
 	else
 		err = ipv6_dev_get_saddr(net, idev ? idev->dev : NULL,
 					 daddr, prefs, saddr);
@@ -2111,7 +2131,7 @@ static int fib6_remove_prefsrc(struct rt6_info *rt, void *arg)
 	struct net *net = ((struct arg_dev_net_ip *)arg)->net;
 	struct in6_addr *addr = ((struct arg_dev_net_ip *)arg)->addr;
 
-	if (((void *)rt->rt6i_dev == dev || dev == NULL) &&
+	if (((void *)rt->dst.dev == dev || !dev) &&
 	    rt != net->ipv6.ip6_null_entry &&
 	    ipv6_addr_equal(addr, &rt->rt6i_prefsrc.addr)) {
 		/* remove prefsrc entry */
@@ -2141,11 +2161,10 @@ static int fib6_ifdown(struct rt6_info *rt, void *arg)
 	const struct arg_dev_net *adn = arg;
 	const struct net_device *dev = adn->dev;
 
-	if ((rt->rt6i_dev == dev || dev == NULL) &&
-	    rt != adn->net->ipv6.ip6_null_entry) {
-		RT6_TRACE("deleted by ifdown %p\n", rt);
+	if ((rt->dst.dev == dev || !dev) &&
+	    rt != adn->net->ipv6.ip6_null_entry)
 		return -1;
-	}
+
 	return 0;
 }
 
@@ -2178,7 +2197,7 @@ static int rt6_mtu_change_route(struct rt6_info *rt, void *p_arg)
 	*/
 
 	idev = __in6_dev_get(arg->dev);
-	if (idev == NULL)
+	if (!idev)
 		return 0;
 
 	/* For administrative MTU increase, there is no way to discover
@@ -2195,7 +2214,7 @@ static int rt6_mtu_change_route(struct rt6_info *rt, void *p_arg)
 	   also have the lowest MTU, TOO BIG MESSAGE will be lead to
 	   PMTU discouvery.
 	 */
-	if (rt->rt6i_dev == arg->dev &&
+	if (rt->dst.dev == arg->dev &&
 	    !dst_metric_locked(&rt->dst, RTAX_MTU) &&
 	    (dst_mtu(&rt->dst) >= arg->mtu ||
 	     (dst_mtu(&rt->dst) < arg->mtu &&
@@ -2344,11 +2363,13 @@ static int rt6_fill_node(struct net *net,
 			 int iif, int type, u32 pid, u32 seq,
 			 int prefix, int nowait, unsigned int flags)
 {
+	const struct inet_peer *peer;
 	struct rtmsg *rtm;
 	struct nlmsghdr *nlh;
 	long expires;
 	u32 table;
 	struct neighbour *n;
+	u32 ts, tsage;
 
 	if (prefix) {	/* user wants prefix routes only */
 		if (!(rt->rt6i_flags & RTF_PREFIX_RT)) {
@@ -2358,7 +2379,7 @@ static int rt6_fill_node(struct net *net,
 	}
 
 	nlh = nlmsg_put(skb, pid, seq, type, sizeof(*rtm), flags);
-	if (nlh == NULL)
+	if (!nlh)
 		return -EMSGSIZE;
 
 	rtm = nlmsg_data(nlh);
@@ -2372,25 +2393,25 @@ static int rt6_fill_node(struct net *net,
 		table = RT6_TABLE_UNSPEC;
 	rtm->rtm_table = table;
 	NLA_PUT_U32(skb, RTA_TABLE, table);
-	if (rt->rt6i_flags&RTF_REJECT)
+	if (rt->rt6i_flags & RTF_REJECT)
 		rtm->rtm_type = RTN_UNREACHABLE;
-	else if (rt->rt6i_flags&RTF_LOCAL)
+	else if (rt->rt6i_flags & RTF_LOCAL)
 		rtm->rtm_type = RTN_LOCAL;
-	else if (rt->rt6i_dev && (rt->rt6i_dev->flags&IFF_LOOPBACK))
+	else if (rt->dst.dev && (rt->dst.dev->flags & IFF_LOOPBACK))
 		rtm->rtm_type = RTN_LOCAL;
 	else
 		rtm->rtm_type = RTN_UNICAST;
 	rtm->rtm_flags = 0;
 	rtm->rtm_scope = RT_SCOPE_UNIVERSE;
 	rtm->rtm_protocol = rt->rt6i_protocol;
-	if (rt->rt6i_flags&RTF_DYNAMIC)
+	if (rt->rt6i_flags & RTF_DYNAMIC)
 		rtm->rtm_protocol = RTPROT_REDIRECT;
 	else if (rt->rt6i_flags & RTF_ADDRCONF)
 		rtm->rtm_protocol = RTPROT_KERNEL;
-	else if (rt->rt6i_flags&RTF_DEFAULT)
+	else if (rt->rt6i_flags & RTF_DEFAULT)
 		rtm->rtm_protocol = RTPROT_RA;
 
-	if (rt->rt6i_flags&RTF_CACHE)
+	if (rt->rt6i_flags & RTF_CACHE)
 		rtm->rtm_flags |= RTM_F_CLONED;
 
 	if (dst) {
@@ -2430,7 +2451,7 @@ static int rt6_fill_node(struct net *net,
 
 	if (rt->rt6i_prefsrc.plen) {
 		struct in6_addr saddr_buf;
-		ipv6_addr_copy(&saddr_buf, &rt->rt6i_prefsrc.addr);
+		saddr_buf = rt->rt6i_prefsrc.addr;
 		NLA_PUT(skb, RTA_PREFSRC, 16, &saddr_buf);
 	}
 
@@ -2438,24 +2459,31 @@ static int rt6_fill_node(struct net *net,
 		goto nla_put_failure;
 
 	rcu_read_lock();
-	n = dst_get_neighbour(&rt->dst);
+	n = dst_get_neighbour_noref(&rt->dst);
 	if (n)
 		NLA_PUT(skb, RTA_GATEWAY, 16, &n->primary_key);
 	rcu_read_unlock();
 
 	if (rt->dst.dev)
-		NLA_PUT_U32(skb, RTA_OIF, rt->rt6i_dev->ifindex);
+		NLA_PUT_U32(skb, RTA_OIF, rt->dst.dev->ifindex);
 
 	NLA_PUT_U32(skb, RTA_PRIORITY, rt->rt6i_metric);
 
 	if (!(rt->rt6i_flags & RTF_EXPIRES))
 		expires = 0;
-	else if (rt->rt6i_expires - jiffies < INT_MAX)
-		expires = rt->rt6i_expires - jiffies;
+	else if (rt->dst.expires - jiffies < INT_MAX)
+		expires = rt->dst.expires - jiffies;
 	else
 		expires = INT_MAX;
 
-	if (rtnl_put_cacheinfo(skb, &rt->dst, 0, 0, 0,
+	peer = rt->rt6i_peer;
+	ts = tsage = 0;
+	if (peer && peer->tcp_ts_stamp) {
+		ts = peer->tcp_ts;
+		tsage = get_seconds() - peer->tcp_ts_stamp;
+	}
+
+	if (rtnl_put_cacheinfo(skb, &rt->dst, 0, ts, tsage,
 			       expires, rt->dst.error) < 0)
 		goto nla_put_failure;
 
@@ -2504,14 +2532,14 @@ static int inet6_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr* nlh, void
 		if (nla_len(tb[RTA_SRC]) < sizeof(struct in6_addr))
 			goto errout;
 
-		ipv6_addr_copy(&fl6.saddr, nla_data(tb[RTA_SRC]));
+		fl6.saddr = *(struct in6_addr *)nla_data(tb[RTA_SRC]);
 	}
 
 	if (tb[RTA_DST]) {
 		if (nla_len(tb[RTA_DST]) < sizeof(struct in6_addr))
 			goto errout;
 
-		ipv6_addr_copy(&fl6.daddr, nla_data(tb[RTA_DST]));
+		fl6.daddr = *(struct in6_addr *)nla_data(tb[RTA_DST]);
 	}
 
 	if (tb[RTA_IIF])
@@ -2530,7 +2558,7 @@ static int inet6_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr* nlh, void
 	}
 
 	skb = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
-	if (skb == NULL) {
+	if (!skb) {
 		err = -ENOBUFS;
 		goto errout;
 	}
@@ -2565,10 +2593,10 @@ void inet6_rt_notify(int event, struct rt6_info *rt, struct nl_info *info)
 	int err;
 
 	err = -ENOBUFS;
-	seq = info->nlh != NULL ? info->nlh->nlmsg_seq : 0;
+	seq = info->nlh ? info->nlh->nlmsg_seq : 0;
 
 	skb = nlmsg_new(rt6_nlmsg_size(), gfp_any());
-	if (skb == NULL)
+	if (!skb)
 		goto errout;
 
 	err = rt6_fill_node(net, skb, rt, NULL, NULL, 0,
@@ -2635,7 +2663,7 @@ static int rt6_info_route(struct rt6_info *rt, void *p_arg)
 	seq_puts(m, "00000000000000000000000000000000 00 ");
 #endif
 	rcu_read_lock();
-	n = dst_get_neighbour(&rt->dst);
+	n = dst_get_neighbour_noref(&rt->dst);
 	if (n) {
 		seq_printf(m, "%pi6", n->primary_key);
 	} else {
@@ -2645,14 +2673,14 @@ static int rt6_info_route(struct rt6_info *rt, void *p_arg)
 	seq_printf(m, " %08x %08x %08x %08x %8s\n",
 		   rt->rt6i_metric, atomic_read(&rt->dst.__refcnt),
 		   rt->dst.__use, rt->rt6i_flags,
-		   rt->rt6i_dev ? rt->rt6i_dev->name : "");
+		   rt->dst.dev ? rt->dst.dev->name : "");
 	return 0;
 }
 
 static int ipv6_route_show(struct seq_file *m, void *v)
 {
 	struct net *net = (struct net *)m->private;
-	fib6_clean_all(net, rt6_info_route, 0, m);
+	fib6_clean_all_ro(net, rt6_info_route, 0, m);
 	return 0;
 }