net-next: remove useless union keyword

remove useless union keyword in rtable, rt6_info and dn_route.

Since there is only one member in a union, the union keyword isn't useful.

Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

11 files changed, 214 insertions, 220 deletions

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index e1a698df5706..b97bb1f30808 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -557,7 +557,7 @@ void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp)
 		pr_warning("Freeing alive inet6 address %p\n", ifp);
 		return;
 	}
-	dst_release(&ifp->rt->u.dst);
+	dst_release(&ifp->rt->dst);
 
 	call_rcu(&ifp->rcu, inet6_ifa_finish_destroy_rcu);
 }
@@ -823,7 +823,7 @@ static void ipv6_del_addr(struct inet6_ifaddr *ifp)
 				rt->rt6i_flags |= RTF_EXPIRES;
 			}
 		}
-		dst_release(&rt->u.dst);
+		dst_release(&rt->dst);
 	}
 
 out:
@@ -1863,7 +1863,7 @@ void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len)
 					      dev, expires, flags);
 		}
 		if (rt)
-			dst_release(&rt->u.dst);
+			dst_release(&rt->dst);
 	}
 
 	/* Try to figure out our local address for this prefix */
@@ -4093,11 +4093,11 @@ static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
 		if (ifp->idev->cnf.forwarding)
 			addrconf_leave_anycast(ifp);
 		addrconf_leave_solict(ifp->idev, &ifp->addr);
-		dst_hold(&ifp->rt->u.dst);
+		dst_hold(&ifp->rt->dst);
 
 		if (ifp->state == INET6_IFADDR_STATE_DEAD &&
 		    ip6_del_rt(ifp->rt))
-			dst_free(&ifp->rt->u.dst);
+			dst_free(&ifp->rt->dst);
 		break;
 	}
 }
diff --git a/net/ipv6/anycast.c b/net/ipv6/anycast.c
index f058fbd808c8..0e5e943446f0 100644
--- a/net/ipv6/anycast.c
+++ b/net/ipv6/anycast.c
@@ -84,7 +84,7 @@ int ipv6_sock_ac_join(struct sock *sk, int ifindex, struct in6_addr *addr)
 		rt = rt6_lookup(net, addr, NULL, 0, 0);
 		if (rt) {
 			dev = rt->rt6i_dev;
-			dst_release(&rt->u.dst);
+			dst_release(&rt->dst);
 		} else if (ishost) {
 			err = -EADDRNOTAVAIL;
 			goto error;
@@ -244,7 +244,7 @@ static void aca_put(struct ifacaddr6 *ac)
 {
 	if (atomic_dec_and_test(&ac->aca_refcnt)) {
 		in6_dev_put(ac->aca_idev);
-		dst_release(&ac->aca_rt->u.dst);
+		dst_release(&ac->aca_rt->dst);
 		kfree(ac);
 	}
 }
@@ -350,7 +350,7 @@ int __ipv6_dev_ac_dec(struct inet6_dev *idev, struct in6_addr *addr)
 	write_unlock_bh(&idev->lock);
 	addrconf_leave_solict(idev, &aca->aca_addr);
 
-	dst_hold(&aca->aca_rt->u.dst);
+	dst_hold(&aca->aca_rt->dst);
 	ip6_del_rt(aca->aca_rt);
 
 	aca_put(aca);
diff --git a/net/ipv6/fib6_rules.c b/net/ipv6/fib6_rules.c
index 8e44f8f9c188..b1108ede18e1 100644
--- a/net/ipv6/fib6_rules.c
+++ b/net/ipv6/fib6_rules.c
@@ -43,8 +43,8 @@ struct dst_entry *fib6_rule_lookup(struct net *net, struct flowi *fl,
 	if (arg.result)
 		return arg.result;
 
-	dst_hold(&net->ipv6.ip6_null_entry->u.dst);
-	return &net->ipv6.ip6_null_entry->u.dst;
+	dst_hold(&net->ipv6.ip6_null_entry->dst);
+	return &net->ipv6.ip6_null_entry->dst;
 }
 
 static int fib6_rule_action(struct fib_rule *rule, struct flowi *flp,
@@ -86,7 +86,7 @@ static int fib6_rule_action(struct fib_rule *rule, struct flowi *flp,
 			struct in6_addr saddr;
 
 			if (ipv6_dev_get_saddr(net,
-					       ip6_dst_idev(&rt->u.dst)->dev,
+					       ip6_dst_idev(&rt->dst)->dev,
 					       &flp->fl6_dst,
 					       rt6_flags2srcprefs(flags),
 					       &saddr))
@@ -99,12 +99,12 @@ static int fib6_rule_action(struct fib_rule *rule, struct flowi *flp,
 		goto out;
 	}
 again:
-	dst_release(&rt->u.dst);
+	dst_release(&rt->dst);
 	rt = NULL;
 	goto out;
 
 discard_pkt:
-	dst_hold(&rt->u.dst);
+	dst_hold(&rt->dst);
 out:
 	arg->result = rt;
 	return rt == NULL ? -EAGAIN : 0;
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index 92a122b7795d..b6a585909d35 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -165,7 +165,7 @@ static __inline__ void node_free(struct fib6_node * fn)
 static __inline__ void rt6_release(struct rt6_info *rt)
 {
 	if (atomic_dec_and_test(&rt->rt6i_ref))
-		dst_free(&rt->u.dst);
+		dst_free(&rt->dst);
 }
 
 static void fib6_link_table(struct net *net, struct fib6_table *tb)
@@ -278,7 +278,7 @@ static int fib6_dump_node(struct fib6_walker_t *w)
 	int res;
 	struct rt6_info *rt;
 
-	for (rt = w->leaf; rt; rt = rt->u.dst.rt6_next) {
+	for (rt = w->leaf; rt; rt = rt->dst.rt6_next) {
 		res = rt6_dump_route(rt, w->args);
 		if (res < 0) {
 			/* Frame is full, suspend walking */
@@ -619,7 +619,7 @@ static int fib6_add_rt2node(struct fib6_node *fn, struct rt6_info *rt,
 
 	ins = &fn->leaf;
 
-	for (iter = fn->leaf; iter; iter=iter->u.dst.rt6_next) {
+	for (iter = fn->leaf; iter; iter=iter->dst.rt6_next) {
 		/*
 		 *	Search for duplicates
 		 */
@@ -647,7 +647,7 @@ static int fib6_add_rt2node(struct fib6_node *fn, struct rt6_info *rt,
 		if (iter->rt6i_metric > rt->rt6i_metric)
 			break;
 
-		ins = &iter->u.dst.rt6_next;
+		ins = &iter->dst.rt6_next;
 	}
 
 	/* Reset round-robin state, if necessary */
@@ -658,7 +658,7 @@ static int fib6_add_rt2node(struct fib6_node *fn, struct rt6_info *rt,
 	 *	insert node
 	 */
 
-	rt->u.dst.rt6_next = iter;
+	rt->dst.rt6_next = iter;
 	*ins = rt;
 	rt->rt6i_node = fn;
 	atomic_inc(&rt->rt6i_ref);
@@ -799,7 +799,7 @@ out:
 			atomic_inc(&pn->leaf->rt6i_ref);
 		}
 #endif
-		dst_free(&rt->u.dst);
+		dst_free(&rt->dst);
 	}
 	return err;
 
@@ -810,7 +810,7 @@ out:
 st_failure:
 	if (fn && !(fn->fn_flags & (RTN_RTINFO|RTN_ROOT)))
 		fib6_repair_tree(info->nl_net, fn);
-	dst_free(&rt->u.dst);
+	dst_free(&rt->dst);
 	return err;
 #endif
 }
@@ -1108,7 +1108,7 @@ static void fib6_del_route(struct fib6_node *fn, struct rt6_info **rtp,
 	RT6_TRACE("fib6_del_route\n");
 
 	/* Unlink it */
-	*rtp = rt->u.dst.rt6_next;
+	*rtp = rt->dst.rt6_next;
 	rt->rt6i_node = NULL;
 	net->ipv6.rt6_stats->fib_rt_entries--;
 	net->ipv6.rt6_stats->fib_discarded_routes++;
@@ -1122,14 +1122,14 @@ static void fib6_del_route(struct fib6_node *fn, struct rt6_info **rtp,
 	FOR_WALKERS(w) {
 		if (w->state == FWS_C && w->leaf == rt) {
 			RT6_TRACE("walker %p adjusted by delroute\n", w);
-			w->leaf = rt->u.dst.rt6_next;
+			w->leaf = rt->dst.rt6_next;
 			if (w->leaf == NULL)
 				w->state = FWS_U;
 		}
 	}
 	read_unlock(&fib6_walker_lock);
 
-	rt->u.dst.rt6_next = NULL;
+	rt->dst.rt6_next = NULL;
 
 	/* If it was last route, expunge its radix tree node */
 	if (fn->leaf == NULL) {
@@ -1168,7 +1168,7 @@ int fib6_del(struct rt6_info *rt, struct nl_info *info)
 	struct rt6_info **rtp;
 
 #if RT6_DEBUG >= 2
-	if (rt->u.dst.obsolete>0) {
+	if (rt->dst.obsolete>0) {
 		WARN_ON(fn != NULL);
 		return -ENOENT;
 	}
@@ -1195,7 +1195,7 @@ int fib6_del(struct rt6_info *rt, struct nl_info *info)
 	 *	Walk the leaf entries looking for ourself
 	 */
 
-	for (rtp = &fn->leaf; *rtp; rtp = &(*rtp)->u.dst.rt6_next) {
+	for (rtp = &fn->leaf; *rtp; rtp = &(*rtp)->dst.rt6_next) {
 		if (*rtp == rt) {
 			fib6_del_route(fn, rtp, info);
 			return 0;
@@ -1334,7 +1334,7 @@ static int fib6_clean_node(struct fib6_walker_t *w)
 		.nl_net = c->net,
 	};
 
-	for (rt = w->leaf; rt; rt = rt->u.dst.rt6_next) {
+	for (rt = w->leaf; rt; rt = rt->dst.rt6_next) {
 		res = c->func(rt, c->arg);
 		if (res < 0) {
 			w->leaf = rt;
@@ -1448,8 +1448,8 @@ static int fib6_age(struct rt6_info *rt, void *arg)
 		}
 		gc_args.more++;
 	} else if (rt->rt6i_flags & RTF_CACHE) {
-		if (atomic_read(&rt->u.dst.__refcnt) == 0 &&
-		    time_after_eq(now, rt->u.dst.lastuse + gc_args.timeout)) {
+		if (atomic_read(&rt->dst.__refcnt) == 0 &&
+		    time_after_eq(now, rt->dst.lastuse + gc_args.timeout)) {
 			RT6_TRACE("aging clone %p\n", rt);
 			return -1;
 		} else if ((rt->rt6i_flags & RTF_GATEWAY) &&
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 89425af0684c..d40b330c0ee6 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -698,7 +698,7 @@ static int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
 		ipv6_hdr(skb)->payload_len = htons(first_len -
 						   sizeof(struct ipv6hdr));
 
-		dst_hold(&rt->u.dst);
+		dst_hold(&rt->dst);
 
 		for (;;) {
 			/* Prepare header of the next frame,
@@ -726,7 +726,7 @@ static int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
 
 			err = output(skb);
 			if(!err)
-				IP6_INC_STATS(net, ip6_dst_idev(&rt->u.dst),
+				IP6_INC_STATS(net, ip6_dst_idev(&rt->dst),
 					      IPSTATS_MIB_FRAGCREATES);
 
 			if (err || !frag)
@@ -740,9 +740,9 @@ static int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
 		kfree(tmp_hdr);
 
 		if (err == 0) {
-			IP6_INC_STATS(net, ip6_dst_idev(&rt->u.dst),
+			IP6_INC_STATS(net, ip6_dst_idev(&rt->dst),
 				      IPSTATS_MIB_FRAGOKS);
-			dst_release(&rt->u.dst);
+			dst_release(&rt->dst);
 			return 0;
 		}
 
@@ -752,9 +752,9 @@ static int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
 			frag = skb;
 		}
 
-		IP6_INC_STATS(net, ip6_dst_idev(&rt->u.dst),
+		IP6_INC_STATS(net, ip6_dst_idev(&rt->dst),
 			      IPSTATS_MIB_FRAGFAILS);
-		dst_release(&rt->u.dst);
+		dst_release(&rt->dst);
 		return err;
 	}
 
@@ -785,7 +785,7 @@ slow_path:
 		 *	Allocate buffer.
 		 */
 
-		if ((frag = alloc_skb(len+hlen+sizeof(struct frag_hdr)+LL_ALLOCATED_SPACE(rt->u.dst.dev), GFP_ATOMIC)) == NULL) {
+		if ((frag = alloc_skb(len+hlen+sizeof(struct frag_hdr)+LL_ALLOCATED_SPACE(rt->dst.dev), GFP_ATOMIC)) == NULL) {
 			NETDEBUG(KERN_INFO "IPv6: frag: no memory for new fragment!\n");
 			IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)),
 				      IPSTATS_MIB_FRAGFAILS);
@@ -798,7 +798,7 @@ slow_path:
 		 */
 
 		ip6_copy_metadata(frag, skb);
-		skb_reserve(frag, LL_RESERVED_SPACE(rt->u.dst.dev));
+		skb_reserve(frag, LL_RESERVED_SPACE(rt->dst.dev));
 		skb_put(frag, len + hlen + sizeof(struct frag_hdr));
 		skb_reset_network_header(frag);
 		fh = (struct frag_hdr *)(skb_network_header(frag) + hlen);
@@ -1156,24 +1156,24 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to,
 
 			/* need source address above miyazawa*/
 		}
-		dst_hold(&rt->u.dst);
-		inet->cork.dst = &rt->u.dst;
+		dst_hold(&rt->dst);
+		inet->cork.dst = &rt->dst;
 		inet->cork.fl = *fl;
 		np->cork.hop_limit = hlimit;
 		np->cork.tclass = tclass;
 		mtu = np->pmtudisc == IPV6_PMTUDISC_PROBE ?
-		      rt->u.dst.dev->mtu : dst_mtu(rt->u.dst.path);
+		      rt->dst.dev->mtu : dst_mtu(rt->dst.path);
 		if (np->frag_size < mtu) {
 			if (np->frag_size)
 				mtu = np->frag_size;
 		}
 		inet->cork.fragsize = mtu;
-		if (dst_allfrag(rt->u.dst.path))
+		if (dst_allfrag(rt->dst.path))
 			inet->cork.flags |= IPCORK_ALLFRAG;
 		inet->cork.length = 0;
 		sk->sk_sndmsg_page = NULL;
 		sk->sk_sndmsg_off = 0;
-		exthdrlen = rt->u.dst.header_len + (opt ? opt->opt_flen : 0) -
+		exthdrlen = rt->dst.header_len + (opt ? opt->opt_flen : 0) -
 			    rt->rt6i_nfheader_len;
 		length += exthdrlen;
 		transhdrlen += exthdrlen;
@@ -1186,7 +1186,7 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to,
 		mtu = inet->cork.fragsize;
 	}
 
-	hh_len = LL_RESERVED_SPACE(rt->u.dst.dev);
+	hh_len = LL_RESERVED_SPACE(rt->dst.dev);
 
 	fragheaderlen = sizeof(struct ipv6hdr) + rt->rt6i_nfheader_len +
 			(opt ? opt->opt_nflen : 0);
@@ -1224,7 +1224,7 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to,
 		}
 
 		if (proto == IPPROTO_UDP &&
-		    (rt->u.dst.dev->features & NETIF_F_UFO)) {
+		    (rt->dst.dev->features & NETIF_F_UFO)) {
 
 			err = ip6_ufo_append_data(sk, getfrag, from, length,
 						  hh_len, fragheaderlen,
@@ -1270,7 +1270,7 @@ alloc_new_skb:
 
 			fraglen = datalen + fragheaderlen;
 			if ((flags & MSG_MORE) &&
-			    !(rt->u.dst.dev->features&NETIF_F_SG))
+			    !(rt->dst.dev->features&NETIF_F_SG))
 				alloclen = mtu;
 			else
 				alloclen = datalen + fragheaderlen;
@@ -1281,7 +1281,7 @@ alloc_new_skb:
 			 * because we have no idea if we're the last one.
 			 */
 			if (datalen == length + fraggap)
-				alloclen += rt->u.dst.trailer_len;
+				alloclen += rt->dst.trailer_len;
 
 			/*
 			 * We just reserve space for fragment header.
@@ -1358,7 +1358,7 @@ alloc_new_skb:
 		if (copy > length)
 			copy = length;
 
-		if (!(rt->u.dst.dev->features&NETIF_F_SG)) {
+		if (!(rt->dst.dev->features&NETIF_F_SG)) {
 			unsigned int off;
 
 			off = skb->len;
@@ -1503,7 +1503,7 @@ int ip6_push_pending_frames(struct sock *sk)
 	skb->priority = sk->sk_priority;
 	skb->mark = sk->sk_mark;
 
-	skb_dst_set(skb, dst_clone(&rt->u.dst));
+	skb_dst_set(skb, dst_clone(&rt->dst));
 	IP6_UPD_PO_STATS(net, rt->rt6i_idev, IPSTATS_MIB_OUT, skb->len);
 	if (proto == IPPROTO_ICMPV6) {
 		struct inet6_dev *idev = ip6_dst_idev(skb_dst(skb));
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index 8f39893d8081..0fd027f3f47e 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -552,7 +552,7 @@ ip4ip6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
 	if (ip_route_output_key(dev_net(skb->dev), &rt, &fl))
 		goto out;
 
-	skb2->dev = rt->u.dst.dev;
+	skb2->dev = rt->dst.dev;
 
 	/* route "incoming" packet */
 	if (rt->rt_flags & RTCF_LOCAL) {
@@ -562,7 +562,7 @@ ip4ip6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
 		fl.fl4_src = eiph->saddr;
 		fl.fl4_tos = eiph->tos;
 		if (ip_route_output_key(dev_net(skb->dev), &rt, &fl) ||
-		    rt->u.dst.dev->type != ARPHRD_TUNNEL) {
+		    rt->dst.dev->type != ARPHRD_TUNNEL) {
 			ip_rt_put(rt);
 			goto out;
 		}
@@ -626,7 +626,7 @@ ip6ip6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
 		icmpv6_send(skb2, rel_type, rel_code, rel_info);
 
 		if (rt)
-			dst_release(&rt->u.dst);
+			dst_release(&rt->dst);
 
 		kfree_skb(skb2);
 	}
@@ -1135,7 +1135,7 @@ static void ip6_tnl_link_config(struct ip6_tnl *t)
 			if (dev->mtu < IPV6_MIN_MTU)
 				dev->mtu = IPV6_MIN_MTU;
 		}
-		dst_release(&rt->u.dst);
+		dst_release(&rt->dst);
 	}
 }
 
diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index 3e36d1538b6e..d1444b95ad7e 100644
--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -158,7 +158,7 @@ int ipv6_sock_mc_join(struct sock *sk, int ifindex, const struct in6_addr *addr)
 		rt = rt6_lookup(net, addr, NULL, 0, 0);
 		if (rt) {
 			dev = rt->rt6i_dev;
-			dst_release(&rt->u.dst);
+			dst_release(&rt->dst);
 		}
 	} else
 		dev = dev_get_by_index_rcu(net, ifindex);
@@ -248,7 +248,7 @@ static struct inet6_dev *ip6_mc_find_dev_rcu(struct net *net,
 		if (rt) {
 			dev = rt->rt6i_dev;
 			dev_hold(dev);
-			dst_release(&rt->u.dst);
+			dst_release(&rt->dst);
 		}
 	} else
 		dev = dev_get_by_index_rcu(net, ifindex);
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index 0abdc242ddb7..1fc46fc60efd 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -1229,7 +1229,7 @@ static void ndisc_router_discovery(struct sk_buff *skb)
 			ND_PRINTK0(KERN_ERR
 				   "ICMPv6 RA: %s() got default router without neighbour.\n",
 				   __func__);
-			dst_release(&rt->u.dst);
+			dst_release(&rt->dst);
 			in6_dev_put(in6_dev);
 			return;
 		}
@@ -1244,7 +1244,7 @@ static void ndisc_router_discovery(struct sk_buff *skb)
 	if (ra_msg->icmph.icmp6_hop_limit) {
 		in6_dev->cnf.hop_limit = ra_msg->icmph.icmp6_hop_limit;
 		if (rt)
-			rt->u.dst.metrics[RTAX_HOPLIMIT-1] = ra_msg->icmph.icmp6_hop_limit;
+			rt->dst.metrics[RTAX_HOPLIMIT-1] = ra_msg->icmph.icmp6_hop_limit;
 	}
 
 skip_defrtr:
@@ -1363,7 +1363,7 @@ skip_linkparms:
 			in6_dev->cnf.mtu6 = mtu;
 
 			if (rt)
-				rt->u.dst.metrics[RTAX_MTU-1] = mtu;
+				rt->dst.metrics[RTAX_MTU-1] = mtu;
 
 			rt6_mtu_change(skb->dev, mtu);
 		}
@@ -1384,7 +1384,7 @@ skip_linkparms:
 	}
 out:
 	if (rt)
-		dst_release(&rt->u.dst);
+		dst_release(&rt->dst);
 	else if (neigh)
 		neigh_release(neigh);
 	in6_dev_put(in6_dev);
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index 968b96490729..e677937a07fc 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -611,23 +611,23 @@ static int rawv6_send_hdrinc(struct sock *sk, void *from, int length,
 	int err;
 	struct rt6_info *rt = (struct rt6_info *)*dstp;
 
-	if (length > rt->u.dst.dev->mtu) {
-		ipv6_local_error(sk, EMSGSIZE, fl, rt->u.dst.dev->mtu);
+	if (length > rt->dst.dev->mtu) {
+		ipv6_local_error(sk, EMSGSIZE, fl, rt->dst.dev->mtu);
 		return -EMSGSIZE;
 	}
 	if (flags&MSG_PROBE)
 		goto out;
 
 	skb = sock_alloc_send_skb(sk,
-				  length + LL_ALLOCATED_SPACE(rt->u.dst.dev) + 15,
+				  length + LL_ALLOCATED_SPACE(rt->dst.dev) + 15,
 				  flags & MSG_DONTWAIT, &err);
 	if (skb == NULL)
 		goto error;
-	skb_reserve(skb, LL_RESERVED_SPACE(rt->u.dst.dev));
+	skb_reserve(skb, LL_RESERVED_SPACE(rt->dst.dev));
 
 	skb->priority = sk->sk_priority;
 	skb->mark = sk->sk_mark;
-	skb_dst_set(skb, &rt->u.dst);
+	skb_dst_set(skb, &rt->dst);
 	*dstp = NULL;
 
 	skb_put(skb, length);
@@ -643,7 +643,7 @@ static int rawv6_send_hdrinc(struct sock *sk, void *from, int length,
 
 	IP6_UPD_PO_STATS(sock_net(sk), rt->rt6i_idev, IPSTATS_MIB_OUT, skb->len);
 	err = NF_HOOK(NFPROTO_IPV6, NF_INET_LOCAL_OUT, skb, NULL,
-		      rt->u.dst.dev, dst_output);
+		      rt->dst.dev, dst_output);
 	if (err > 0)
 		err = net_xmit_errno(err);
 	if (err)
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 252d76199c41..f7702850d45c 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -126,16 +126,14 @@ static struct dst_ops ip6_dst_blackhole_ops = {
 };
 
 static struct rt6_info ip6_null_entry_template = {
-	.u = {
-		.dst = {
-			.__refcnt	= ATOMIC_INIT(1),
-			.__use		= 1,
-			.obsolete	= -1,
-			.error		= -ENETUNREACH,
-			.metrics	= { [RTAX_HOPLIMIT - 1] = 255, },
-			.input		= ip6_pkt_discard,
-			.output		= ip6_pkt_discard_out,
-		}
+	.dst = {
+		.__refcnt	= ATOMIC_INIT(1),
+		.__use		= 1,
+		.obsolete	= -1,
+		.error		= -ENETUNREACH,
+		.metrics	= { [RTAX_HOPLIMIT - 1] = 255, },
+		.input		= ip6_pkt_discard,
+		.output		= ip6_pkt_discard_out,
 	},
 	.rt6i_flags	= (RTF_REJECT | RTF_NONEXTHOP),
 	.rt6i_protocol  = RTPROT_KERNEL,
@@ -149,16 +147,14 @@ static int ip6_pkt_prohibit(struct sk_buff *skb);
 static int ip6_pkt_prohibit_out(struct sk_buff *skb);
 
 static struct rt6_info ip6_prohibit_entry_template = {
-	.u = {
-		.dst = {
-			.__refcnt	= ATOMIC_INIT(1),
-			.__use		= 1,
-			.obsolete	= -1,
-			.error		= -EACCES,
-			.metrics	= { [RTAX_HOPLIMIT - 1] = 255, },
-			.input		= ip6_pkt_prohibit,
-			.output		= ip6_pkt_prohibit_out,
-		}
+	.dst = {
+		.__refcnt	= ATOMIC_INIT(1),
+		.__use		= 1,
+		.obsolete	= -1,
+		.error		= -EACCES,
+		.metrics	= { [RTAX_HOPLIMIT - 1] = 255, },
+		.input		= ip6_pkt_prohibit,
+		.output		= ip6_pkt_prohibit_out,
 	},
 	.rt6i_flags	= (RTF_REJECT | RTF_NONEXTHOP),
 	.rt6i_protocol  = RTPROT_KERNEL,
@@ -167,16 +163,14 @@ static struct rt6_info ip6_prohibit_entry_template = {
 };
 
 static struct rt6_info ip6_blk_hole_entry_template = {
-	.u = {
-		.dst = {
-			.__refcnt	= ATOMIC_INIT(1),
-			.__use		= 1,
-			.obsolete	= -1,
-			.error		= -EINVAL,
-			.metrics	= { [RTAX_HOPLIMIT - 1] = 255, },
-			.input		= dst_discard,
-			.output		= dst_discard,
-		}
+	.dst = {
+		.__refcnt	= ATOMIC_INIT(1),
+		.__use		= 1,
+		.obsolete	= -1,
+		.error		= -EINVAL,
+		.metrics	= { [RTAX_HOPLIMIT - 1] = 255, },
+		.input		= dst_discard,
+		.output		= dst_discard,
 	},
 	.rt6i_flags	= (RTF_REJECT | RTF_NONEXTHOP),
 	.rt6i_protocol  = RTPROT_KERNEL,
@@ -249,7 +243,7 @@ static inline struct rt6_info *rt6_device_match(struct net *net,
 	if (!oif && ipv6_addr_any(saddr))
 		goto out;
 
-	for (sprt = rt; sprt; sprt = sprt->u.dst.rt6_next) {
+	for (sprt = rt; sprt; sprt = sprt->dst.rt6_next) {
 		struct net_device *dev = sprt->rt6i_dev;
 
 		if (oif) {
@@ -407,10 +401,10 @@ static struct rt6_info *find_rr_leaf(struct fib6_node *fn,
 
 	match = NULL;
 	for (rt = rr_head; rt && rt->rt6i_metric == metric;
-	     rt = rt->u.dst.rt6_next)
+	     rt = rt->dst.rt6_next)
 		match = find_match(rt, oif, strict, &mpri, match);
 	for (rt = fn->leaf; rt && rt != rr_head && rt->rt6i_metric == metric;
-	     rt = rt->u.dst.rt6_next)
+	     rt = rt->dst.rt6_next)
 		match = find_match(rt, oif, strict, &mpri, match);
 
 	return match;
@@ -432,7 +426,7 @@ static struct rt6_info *rt6_select(struct fib6_node *fn, int oif, int strict)
 
 	if (!match &&
 	    (strict & RT6_LOOKUP_F_REACHABLE)) {
-		struct rt6_info *next = rt0->u.dst.rt6_next;
+		struct rt6_info *next = rt0->dst.rt6_next;
 
 		/* no entries matched; do round-robin */
 		if (!next || next->rt6i_metric != rt0->rt6i_metric)
@@ -517,7 +511,7 @@ int rt6_route_rcv(struct net_device *dev, u8 *opt, int len,
 			rt->rt6i_expires = jiffies + HZ * lifetime;
 			rt->rt6i_flags |= RTF_EXPIRES;
 		}
-		dst_release(&rt->u.dst);
+		dst_release(&rt->dst);
 	}
 	return 0;
 }
@@ -555,7 +549,7 @@ restart:
 	rt = rt6_device_match(net, rt, &fl->fl6_src, fl->oif, flags);
 	BACKTRACK(net, &fl->fl6_src);
 out:
-	dst_use(&rt->u.dst, jiffies);
+	dst_use(&rt->dst, jiffies);
 	read_unlock_bh(&table->tb6_lock);
 	return rt;
 
@@ -643,7 +637,7 @@ static struct rt6_info *rt6_alloc_cow(struct rt6_info *ort, struct in6_addr *dad
 		ipv6_addr_copy(&rt->rt6i_dst.addr, daddr);
 		rt->rt6i_dst.plen = 128;
 		rt->rt6i_flags |= RTF_CACHE;
-		rt->u.dst.flags |= DST_HOST;
+		rt->dst.flags |= DST_HOST;
 
 #ifdef CONFIG_IPV6_SUBTREES
 		if (rt->rt6i_src.plen && saddr) {
@@ -677,7 +671,7 @@ static struct rt6_info *rt6_alloc_cow(struct rt6_info *ort, struct in6_addr *dad
 			if (net_ratelimit())
 				printk(KERN_WARNING
 				       "Neighbour table overflow.\n");
-			dst_free(&rt->u.dst);
+			dst_free(&rt->dst);
 			return NULL;
 		}
 		rt->rt6i_nexthop = neigh;
@@ -694,7 +688,7 @@ static struct rt6_info *rt6_alloc_clone(struct rt6_info *ort, struct in6_addr *d
 		ipv6_addr_copy(&rt->rt6i_dst.addr, daddr);
 		rt->rt6i_dst.plen = 128;
 		rt->rt6i_flags |= RTF_CACHE;
-		rt->u.dst.flags |= DST_HOST;
+		rt->dst.flags |= DST_HOST;
 		rt->rt6i_nexthop = neigh_clone(ort->rt6i_nexthop);
 	}
 	return rt;
@@ -726,7 +720,7 @@ restart:
 	    rt->rt6i_flags & RTF_CACHE)
 		goto out;
 
-	dst_hold(&rt->u.dst);
+	dst_hold(&rt->dst);
 	read_unlock_bh(&table->tb6_lock);
 
 	if (!rt->rt6i_nexthop && !(rt->rt6i_flags & RTF_NONEXTHOP))
@@ -739,10 +733,10 @@ restart:
 #endif
 	}
 
-	dst_release(&rt->u.dst);
+	dst_release(&rt->dst);
 	rt = nrt ? : net->ipv6.ip6_null_entry;
 
-	dst_hold(&rt->u.dst);
+	dst_hold(&rt->dst);
 	if (nrt) {
 		err = ip6_ins_rt(nrt);
 		if (!err)
@@ -756,7 +750,7 @@ restart:
 	 * Race condition! In the gap, when table->tb6_lock was
 	 * released someone could insert this route.  Relookup.
 	 */
-	dst_release(&rt->u.dst);
+	dst_release(&rt->dst);
 	goto relookup;
 
 out:
@@ -764,11 +758,11 @@ out:
 		reachable = 0;
 		goto restart_2;
 	}
-	dst_hold(&rt->u.dst);
+	dst_hold(&rt->dst);
 	read_unlock_bh(&table->tb6_lock);
 out2:
-	rt->u.dst.lastuse = jiffies;
-	rt->u.dst.__use++;
+	rt->dst.lastuse = jiffies;
+	rt->dst.__use++;
 
 	return rt;
 }
@@ -835,15 +829,15 @@ int ip6_dst_blackhole(struct sock *sk, struct dst_entry **dstp, struct flowi *fl
 	struct dst_entry *new = NULL;
 
 	if (rt) {
-		new = &rt->u.dst;
+		new = &rt->dst;
 
 		atomic_set(&new->__refcnt, 1);
 		new->__use = 1;
 		new->input = dst_discard;
 		new->output = dst_discard;
 
-		memcpy(new->metrics, ort->u.dst.metrics, RTAX_MAX*sizeof(u32));
-		new->dev = ort->u.dst.dev;
+		memcpy(new->metrics, ort->dst.metrics, RTAX_MAX*sizeof(u32));
+		new->dev = ort->dst.dev;
 		if (new->dev)
 			dev_hold(new->dev);
 		rt->rt6i_idev = ort->rt6i_idev;
@@ -912,7 +906,7 @@ static void ip6_link_failure(struct sk_buff *skb)
 	rt = (struct rt6_info *) skb_dst(skb);
 	if (rt) {
 		if (rt->rt6i_flags&RTF_CACHE) {
-			dst_set_expires(&rt->u.dst, 0);
+			dst_set_expires(&rt->dst, 0);
 			rt->rt6i_flags |= RTF_EXPIRES;
 		} else if (rt->rt6i_node && (rt->rt6i_flags & RTF_DEFAULT))
 			rt->rt6i_node->fn_sernum = -1;
@@ -986,14 +980,14 @@ struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
 	rt->rt6i_dev	  = dev;
 	rt->rt6i_idev     = idev;
 	rt->rt6i_nexthop  = neigh;
-	atomic_set(&rt->u.dst.__refcnt, 1);
-	rt->u.dst.metrics[RTAX_HOPLIMIT-1] = 255;
-	rt->u.dst.metrics[RTAX_MTU-1] = ipv6_get_mtu(rt->rt6i_dev);
-	rt->u.dst.metrics[RTAX_ADVMSS-1] = ipv6_advmss(net, dst_mtu(&rt->u.dst));
-	rt->u.dst.output  = ip6_output;
+	atomic_set(&rt->dst.__refcnt, 1);
+	rt->dst.metrics[RTAX_HOPLIMIT-1] = 255;
+	rt->dst.metrics[RTAX_MTU-1] = ipv6_get_mtu(rt->rt6i_dev);
+	rt->dst.metrics[RTAX_ADVMSS-1] = ipv6_advmss(net, dst_mtu(&rt->dst));
+	rt->dst.output  = ip6_output;
 
 #if 0	/* there's no chance to use these for ndisc */
-	rt->u.dst.flags   = ipv6_addr_type(addr) & IPV6_ADDR_UNICAST
+	rt->dst.flags   = ipv6_addr_type(addr) & IPV6_ADDR_UNICAST
 				? DST_HOST
 				: 0;
 	ipv6_addr_copy(&rt->rt6i_dst.addr, addr);
@@ -1001,14 +995,14 @@ struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
 #endif
 
 	spin_lock_bh(&icmp6_dst_lock);
-	rt->u.dst.next = icmp6_dst_gc_list;
-	icmp6_dst_gc_list = &rt->u.dst;
+	rt->dst.next = icmp6_dst_gc_list;
+	icmp6_dst_gc_list = &rt->dst;
 	spin_unlock_bh(&icmp6_dst_lock);
 
 	fib6_force_start_gc(net);
 
 out:
-	return &rt->u.dst;
+	return &rt->dst;
 }
 
 int icmp6_dst_gc(void)
@@ -1159,7 +1153,7 @@ int ip6_route_add(struct fib6_config *cfg)
 		goto out;
 	}
 
-	rt->u.dst.obsolete = -1;
+	rt->dst.obsolete = -1;
 	rt->rt6i_expires = (cfg->fc_flags & RTF_EXPIRES) ?
 				jiffies + clock_t_to_jiffies(cfg->fc_expires) :
 				0;
@@ -1171,16 +1165,16 @@ int ip6_route_add(struct fib6_config *cfg)
 	addr_type = ipv6_addr_type(&cfg->fc_dst);
 
 	if (addr_type & IPV6_ADDR_MULTICAST)
-		rt->u.dst.input = ip6_mc_input;
+		rt->dst.input = ip6_mc_input;
 	else
-		rt->u.dst.input = ip6_forward;
+		rt->dst.input = ip6_forward;
 
-	rt->u.dst.output = ip6_output;
+	rt->dst.output = ip6_output;
 
 	ipv6_addr_prefix(&rt->rt6i_dst.addr, &cfg->fc_dst, cfg->fc_dst_len);
 	rt->rt6i_dst.plen = cfg->fc_dst_len;
 	if (rt->rt6i_dst.plen == 128)
-	       rt->u.dst.flags = DST_HOST;
+	       rt->dst.flags = DST_HOST;
 
 #ifdef CONFIG_IPV6_SUBTREES
 	ipv6_addr_prefix(&rt->rt6i_src.addr, &cfg->fc_src, cfg->fc_src_len);
@@ -1208,9 +1202,9 @@ int ip6_route_add(struct fib6_config *cfg)
 				goto out;
 			}
 		}
-		rt->u.dst.output = ip6_pkt_discard_out;
-		rt->u.dst.input = ip6_pkt_discard;
-		rt->u.dst.error = -ENETUNREACH;
+		rt->dst.output = ip6_pkt_discard_out;
+		rt->dst.input = ip6_pkt_discard;
+		rt->dst.error = -ENETUNREACH;
 		rt->rt6i_flags = RTF_REJECT|RTF_NONEXTHOP;
 		goto install_route;
 	}
@@ -1244,7 +1238,7 @@ int ip6_route_add(struct fib6_config *cfg)
 				goto out;
 			if (dev) {
 				if (dev != grt->rt6i_dev) {
-					dst_release(&grt->u.dst);
+					dst_release(&grt->dst);
 					goto out;
 				}
 			} else {
@@ -1255,7 +1249,7 @@ int ip6_route_add(struct fib6_config *cfg)
 			}
 			if (!(grt->rt6i_flags&RTF_GATEWAY))
 				err = 0;
-			dst_release(&grt->u.dst);
+			dst_release(&grt->dst);
 
 			if (err)
 				goto out;
@@ -1294,18 +1288,18 @@ install_route:
 					goto out;
 				}
 
-				rt->u.dst.metrics[type - 1] = nla_get_u32(nla);
+				rt->dst.metrics[type - 1] = nla_get_u32(nla);
 			}
 		}
 	}
 
-	if (dst_metric(&rt->u.dst, RTAX_HOPLIMIT) == 0)
-		rt->u.dst.metrics[RTAX_HOPLIMIT-1] = -1;
-	if (!dst_mtu(&rt->u.dst))
-		rt->u.dst.metrics[RTAX_MTU-1] = ipv6_get_mtu(dev);
-	if (!dst_metric(&rt->u.dst, RTAX_ADVMSS))
-		rt->u.dst.metrics[RTAX_ADVMSS-1] = ipv6_advmss(net, dst_mtu(&rt->u.dst));
-	rt->u.dst.dev = dev;
+	if (dst_metric(&rt->dst, RTAX_HOPLIMIT) == 0)
+		rt->dst.metrics[RTAX_HOPLIMIT-1] = -1;
+	if (!dst_mtu(&rt->dst))
+		rt->dst.metrics[RTAX_MTU-1] = ipv6_get_mtu(dev);
+	if (!dst_metric(&rt->dst, RTAX_ADVMSS))
+		rt->dst.metrics[RTAX_ADVMSS-1] = ipv6_advmss(net, dst_mtu(&rt->dst));
+	rt->dst.dev = dev;
 	rt->rt6i_idev = idev;
 	rt->rt6i_table = table;
 
@@ -1319,7 +1313,7 @@ out:
 	if (idev)
 		in6_dev_put(idev);
 	if (rt)
-		dst_free(&rt->u.dst);
+		dst_free(&rt->dst);
 	return err;
 }
 
@@ -1336,7 +1330,7 @@ static int __ip6_del_rt(struct rt6_info *rt, struct nl_info *info)
 	write_lock_bh(&table->tb6_lock);
 
 	err = fib6_del(rt, info);
-	dst_release(&rt->u.dst);
+	dst_release(&rt->dst);
 
 	write_unlock_bh(&table->tb6_lock);
 
@@ -1369,7 +1363,7 @@ static int ip6_route_del(struct fib6_config *cfg)
 			 &cfg->fc_src, cfg->fc_src_len);
 
 	if (fn) {
-		for (rt = fn->leaf; rt; rt = rt->u.dst.rt6_next) {
+		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))
@@ -1379,7 +1373,7 @@ static int ip6_route_del(struct fib6_config *cfg)
 				continue;
 			if (cfg->fc_metric && cfg->fc_metric != rt->rt6i_metric)
 				continue;
-			dst_hold(&rt->u.dst);
+			dst_hold(&rt->dst);
 			read_unlock_bh(&table->tb6_lock);
 
 			return __ip6_del_rt(rt, &cfg->fc_nlinfo);
@@ -1421,7 +1415,7 @@ static struct rt6_info *__ip6_route_redirect(struct net *net,
 	read_lock_bh(&table->tb6_lock);
 	fn = fib6_lookup(&table->tb6_root, &fl->fl6_dst, &fl->fl6_src);
 restart:
-	for (rt = fn->leaf; rt; rt = rt->u.dst.rt6_next) {
+	for (rt = fn->leaf; rt; rt = rt->dst.rt6_next) {
 		/*
 		 * Current route is on-link; redirect is always invalid.
 		 *
@@ -1445,7 +1439,7 @@ restart:
 		rt = net->ipv6.ip6_null_entry;
 	BACKTRACK(net, &fl->fl6_src);
 out:
-	dst_hold(&rt->u.dst);
+	dst_hold(&rt->dst);
 
 	read_unlock_bh(&table->tb6_lock);
 
@@ -1513,10 +1507,10 @@ void rt6_redirect(struct in6_addr *dest, struct in6_addr *src,
 	 * Look, redirects are sent only in response to data packets,
 	 * so that this nexthop apparently is reachable. --ANK
 	 */
-	dst_confirm(&rt->u.dst);
+	dst_confirm(&rt->dst);
 
 	/* Duplicate redirect: silently ignore. */
-	if (neigh == rt->u.dst.neighbour)
+	if (neigh == rt->dst.neighbour)
 		goto out;
 
 	nrt = ip6_rt_copy(rt);
@@ -1529,20 +1523,20 @@ void rt6_redirect(struct in6_addr *dest, struct in6_addr *src,
 
 	ipv6_addr_copy(&nrt->rt6i_dst.addr, dest);
 	nrt->rt6i_dst.plen = 128;
-	nrt->u.dst.flags |= DST_HOST;
+	nrt->dst.flags |= DST_HOST;
 
 	ipv6_addr_copy(&nrt->rt6i_gateway, (struct in6_addr*)neigh->primary_key);
 	nrt->rt6i_nexthop = neigh_clone(neigh);
 	/* Reset pmtu, it may be better */
-	nrt->u.dst.metrics[RTAX_MTU-1] = ipv6_get_mtu(neigh->dev);
-	nrt->u.dst.metrics[RTAX_ADVMSS-1] = ipv6_advmss(dev_net(neigh->dev),
-							dst_mtu(&nrt->u.dst));
+	nrt->dst.metrics[RTAX_MTU-1] = ipv6_get_mtu(neigh->dev);
+	nrt->dst.metrics[RTAX_ADVMSS-1] = ipv6_advmss(dev_net(neigh->dev),
+							dst_mtu(&nrt->dst));
 
 	if (ip6_ins_rt(nrt))
 		goto out;
 
-	netevent.old = &rt->u.dst;
-	netevent.new = &nrt->u.dst;
+	netevent.old = &rt->dst;
+	netevent.new = &nrt->dst;
 	call_netevent_notifiers(NETEVENT_REDIRECT, &netevent);
 
 	if (rt->rt6i_flags&RTF_CACHE) {
@@ -1551,7 +1545,7 @@ void rt6_redirect(struct in6_addr *dest, struct in6_addr *src,
 	}
 
 out:
-	dst_release(&rt->u.dst);
+	dst_release(&rt->dst);
 }
 
 /*
@@ -1570,7 +1564,7 @@ void rt6_pmtu_discovery(struct in6_addr *daddr, struct in6_addr *saddr,
 	if (rt == NULL)
 		return;
 
-	if (pmtu >= dst_mtu(&rt->u.dst))
+	if (pmtu >= dst_mtu(&rt->dst))
 		goto out;
 
 	if (pmtu < IPV6_MIN_MTU) {
@@ -1588,7 +1582,7 @@ void rt6_pmtu_discovery(struct in6_addr *daddr, struct in6_addr *saddr,
 	   They are sent only in response to data packets,
 	   so that this nexthop apparently is reachable. --ANK
 	 */
-	dst_confirm(&rt->u.dst);
+	dst_confirm(&rt->dst);
 
 	/* Host route. If it is static, it would be better
 	   not to override it, but add new one, so that
@@ -1596,10 +1590,10 @@ void rt6_pmtu_discovery(struct in6_addr *daddr, struct in6_addr *saddr,
 	   would return automatically.
 	 */
 	if (rt->rt6i_flags & RTF_CACHE) {
-		rt->u.dst.metrics[RTAX_MTU-1] = pmtu;
+		rt->dst.metrics[RTAX_MTU-1] = pmtu;
 		if (allfrag)
-			rt->u.dst.metrics[RTAX_FEATURES-1] |= RTAX_FEATURE_ALLFRAG;
-		dst_set_expires(&rt->u.dst, net->ipv6.sysctl.ip6_rt_mtu_expires);
+			rt->dst.metrics[RTAX_FEATURES-1] |= RTAX_FEATURE_ALLFRAG;
+		dst_set_expires(&rt->dst, net->ipv6.sysctl.ip6_rt_mtu_expires);
 		rt->rt6i_flags |= RTF_MODIFIED|RTF_EXPIRES;
 		goto out;
 	}
@@ -1615,9 +1609,9 @@ void rt6_pmtu_discovery(struct in6_addr *daddr, struct in6_addr *saddr,
 		nrt = rt6_alloc_clone(rt, daddr);
 
 	if (nrt) {
-		nrt->u.dst.metrics[RTAX_MTU-1] = pmtu;
+		nrt->dst.metrics[RTAX_MTU-1] = pmtu;
 		if (allfrag)
-			nrt->u.dst.metrics[RTAX_FEATURES-1] |= RTAX_FEATURE_ALLFRAG;
+			nrt->dst.metrics[RTAX_FEATURES-1] |= RTAX_FEATURE_ALLFRAG;
 
 		/* According to RFC 1981, detecting PMTU increase shouldn't be
 		 * happened within 5 mins, the recommended timer is 10 mins.
@@ -1625,13 +1619,13 @@ void rt6_pmtu_discovery(struct in6_addr *daddr, struct in6_addr *saddr,
 		 * which is 10 mins. After 10 mins the decreased pmtu is expired
 		 * and detecting PMTU increase will be automatically happened.
 		 */
-		dst_set_expires(&nrt->u.dst, net->ipv6.sysctl.ip6_rt_mtu_expires);
+		dst_set_expires(&nrt->dst, net->ipv6.sysctl.ip6_rt_mtu_expires);
 		nrt->rt6i_flags |= RTF_DYNAMIC|RTF_EXPIRES;
 
 		ip6_ins_rt(nrt);
 	}
 out:
-	dst_release(&rt->u.dst);
+	dst_release(&rt->dst);
 }
 
 /*
@@ -1644,18 +1638,18 @@ static struct rt6_info * ip6_rt_copy(struct rt6_info *ort)
 	struct rt6_info *rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops);
 
 	if (rt) {
-		rt->u.dst.input = ort->u.dst.input;
-		rt->u.dst.output = ort->u.dst.output;
-
-		memcpy(rt->u.dst.metrics, ort->u.dst.metrics, RTAX_MAX*sizeof(u32));
-		rt->u.dst.error = ort->u.dst.error;
-		rt->u.dst.dev = ort->u.dst.dev;
-		if (rt->u.dst.dev)
-			dev_hold(rt->u.dst.dev);
+		rt->dst.input = ort->dst.input;
+		rt->dst.output = ort->dst.output;
+
+		memcpy(rt->dst.metrics, ort->dst.metrics, RTAX_MAX*sizeof(u32));
+		rt->dst.error = ort->dst.error;
+		rt->dst.dev = ort->dst.dev;
+		if (rt->dst.dev)
+			dev_hold(rt->dst.dev);
 		rt->rt6i_idev = ort->rt6i_idev;
 		if (rt->rt6i_idev)
 			in6_dev_hold(rt->rt6i_idev);
-		rt->u.dst.lastuse = jiffies;
+		rt->dst.lastuse = jiffies;
 		rt->rt6i_expires = 0;
 
 		ipv6_addr_copy(&rt->rt6i_gateway, &ort->rt6i_gateway);
@@ -1689,14 +1683,14 @@ static struct rt6_info *rt6_get_route_info(struct net *net,
 	if (!fn)
 		goto out;
 
-	for (rt = fn->leaf; rt; rt = rt->u.dst.rt6_next) {
+	for (rt = fn->leaf; rt; rt = rt->dst.rt6_next) {
 		if (rt->rt6i_dev->ifindex != ifindex)
 			continue;
 		if ((rt->rt6i_flags & (RTF_ROUTEINFO|RTF_GATEWAY)) != (RTF_ROUTEINFO|RTF_GATEWAY))
 			continue;
 		if (!ipv6_addr_equal(&rt->rt6i_gateway, gwaddr))
 			continue;
-		dst_hold(&rt->u.dst);
+		dst_hold(&rt->dst);
 		break;
 	}
 out:
@@ -1744,14 +1738,14 @@ struct rt6_info *rt6_get_dflt_router(struct in6_addr *addr, struct net_device *d
 		return NULL;
 
 	write_lock_bh(&table->tb6_lock);
-	for (rt = table->tb6_root.leaf; rt; rt=rt->u.dst.rt6_next) {
+	for (rt = table->tb6_root.leaf; rt; rt=rt->dst.rt6_next) {
 		if (dev == rt->rt6i_dev &&
 		    ((rt->rt6i_flags & (RTF_ADDRCONF | RTF_DEFAULT)) == (RTF_ADDRCONF | RTF_DEFAULT)) &&
 		    ipv6_addr_equal(&rt->rt6i_gateway, addr))
 			break;
 	}
 	if (rt)
-		dst_hold(&rt->u.dst);
+		dst_hold(&rt->dst);
 	write_unlock_bh(&table->tb6_lock);
 	return rt;
 }
@@ -1790,9 +1784,9 @@ void rt6_purge_dflt_routers(struct net *net)
 
 restart:
 	read_lock_bh(&table->tb6_lock);
-	for (rt = table->tb6_root.leaf; rt; rt = rt->u.dst.rt6_next) {
+	for (rt = table->tb6_root.leaf; rt; rt = rt->dst.rt6_next) {
 		if (rt->rt6i_flags & (RTF_DEFAULT | RTF_ADDRCONF)) {
-			dst_hold(&rt->u.dst);
+			dst_hold(&rt->dst);
 			read_unlock_bh(&table->tb6_lock);
 			ip6_del_rt(rt);
 			goto restart;
@@ -1930,15 +1924,15 @@ struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
 	dev_hold(net->loopback_dev);
 	in6_dev_hold(idev);
 
-	rt->u.dst.flags = DST_HOST;
-	rt->u.dst.input = ip6_input;
-	rt->u.dst.output = ip6_output;
+	rt->dst.flags = DST_HOST;
+	rt->dst.input = ip6_input;
+	rt->dst.output = ip6_output;
 	rt->rt6i_dev = net->loopback_dev;
 	rt->rt6i_idev = idev;
-	rt->u.dst.metrics[RTAX_MTU-1] = ipv6_get_mtu(rt->rt6i_dev);
-	rt->u.dst.metrics[RTAX_ADVMSS-1] = ipv6_advmss(net, dst_mtu(&rt->u.dst));
-	rt->u.dst.metrics[RTAX_HOPLIMIT-1] = -1;
-	rt->u.dst.obsolete = -1;
+	rt->dst.metrics[RTAX_MTU-1] = ipv6_get_mtu(rt->rt6i_dev);
+	rt->dst.metrics[RTAX_ADVMSS-1] = ipv6_advmss(net, dst_mtu(&rt->dst));
+	rt->dst.metrics[RTAX_HOPLIMIT-1] = -1;
+	rt->dst.obsolete = -1;
 
 	rt->rt6i_flags = RTF_UP | RTF_NONEXTHOP;
 	if (anycast)
@@ -1947,7 +1941,7 @@ struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
 		rt->rt6i_flags |= RTF_LOCAL;
 	neigh = ndisc_get_neigh(rt->rt6i_dev, &rt->rt6i_gateway);
 	if (IS_ERR(neigh)) {
-		dst_free(&rt->u.dst);
+		dst_free(&rt->dst);
 
 		/* We are casting this because that is the return
 		 * value type.  But an errno encoded pointer is the
@@ -1962,7 +1956,7 @@ struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
 	rt->rt6i_dst.plen = 128;
 	rt->rt6i_table = fib6_get_table(net, RT6_TABLE_LOCAL);
 
-	atomic_set(&rt->u.dst.__refcnt, 1);
+	atomic_set(&rt->dst.__refcnt, 1);
 
 	return rt;
 }
@@ -2033,12 +2027,12 @@ static int rt6_mtu_change_route(struct rt6_info *rt, void *p_arg)
 	   PMTU discouvery.
 	 */
 	if (rt->rt6i_dev == arg->dev &&
-	    !dst_metric_locked(&rt->u.dst, RTAX_MTU) &&
-	    (dst_mtu(&rt->u.dst) >= arg->mtu ||
-	     (dst_mtu(&rt->u.dst) < arg->mtu &&
-	      dst_mtu(&rt->u.dst) == idev->cnf.mtu6))) {
-		rt->u.dst.metrics[RTAX_MTU-1] = arg->mtu;
-		rt->u.dst.metrics[RTAX_ADVMSS-1] = ipv6_advmss(net, arg->mtu);
+	    !dst_metric_locked(&rt->dst, RTAX_MTU) &&
+	    (dst_mtu(&rt->dst) >= arg->mtu ||
+	     (dst_mtu(&rt->dst) < arg->mtu &&
+	      dst_mtu(&rt->dst) == idev->cnf.mtu6))) {
+		rt->dst.metrics[RTAX_MTU-1] = arg->mtu;
+		rt->dst.metrics[RTAX_ADVMSS-1] = ipv6_advmss(net, arg->mtu);
 	}
 	return 0;
 }
@@ -2252,20 +2246,20 @@ static int rt6_fill_node(struct net *net,
 #endif
 			NLA_PUT_U32(skb, RTA_IIF, iif);
 	} else if (dst) {
-		struct inet6_dev *idev = ip6_dst_idev(&rt->u.dst);
+		struct inet6_dev *idev = ip6_dst_idev(&rt->dst);
 		struct in6_addr saddr_buf;
 		if (ipv6_dev_get_saddr(net, idev ? idev->dev : NULL,
 				       dst, 0, &saddr_buf) == 0)
 			NLA_PUT(skb, RTA_PREFSRC, 16, &saddr_buf);
 	}
 
-	if (rtnetlink_put_metrics(skb, rt->u.dst.metrics) < 0)
+	if (rtnetlink_put_metrics(skb, rt->dst.metrics) < 0)
 		goto nla_put_failure;
 
-	if (rt->u.dst.neighbour)
-		NLA_PUT(skb, RTA_GATEWAY, 16, &rt->u.dst.neighbour->primary_key);
+	if (rt->dst.neighbour)
+		NLA_PUT(skb, RTA_GATEWAY, 16, &rt->dst.neighbour->primary_key);
 
-	if (rt->u.dst.dev)
+	if (rt->dst.dev)
 		NLA_PUT_U32(skb, RTA_OIF, rt->rt6i_dev->ifindex);
 
 	NLA_PUT_U32(skb, RTA_PRIORITY, rt->rt6i_metric);
@@ -2277,8 +2271,8 @@ static int rt6_fill_node(struct net *net,
 	else
 		expires = INT_MAX;
 
-	if (rtnl_put_cacheinfo(skb, &rt->u.dst, 0, 0, 0,
-			       expires, rt->u.dst.error) < 0)
+	if (rtnl_put_cacheinfo(skb, &rt->dst, 0, 0, 0,
+			       expires, rt->dst.error) < 0)
 		goto nla_put_failure;
 
 	return nlmsg_end(skb, nlh);
@@ -2364,7 +2358,7 @@ static int inet6_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr* nlh, void
 	skb_reserve(skb, MAX_HEADER + sizeof(struct ipv6hdr));
 
 	rt = (struct rt6_info*) ip6_route_output(net, NULL, &fl);
-	skb_dst_set(skb, &rt->u.dst);
+	skb_dst_set(skb, &rt->dst);
 
 	err = rt6_fill_node(net, skb, rt, &fl.fl6_dst, &fl.fl6_src, iif,
 			    RTM_NEWROUTE, NETLINK_CB(in_skb).pid,
@@ -2416,12 +2410,12 @@ static int ip6_route_dev_notify(struct notifier_block *this,
 	struct net *net = dev_net(dev);
 
 	if (event == NETDEV_REGISTER && (dev->flags & IFF_LOOPBACK)) {
-		net->ipv6.ip6_null_entry->u.dst.dev = dev;
+		net->ipv6.ip6_null_entry->dst.dev = dev;
 		net->ipv6.ip6_null_entry->rt6i_idev = in6_dev_get(dev);
 #ifdef CONFIG_IPV6_MULTIPLE_TABLES
-		net->ipv6.ip6_prohibit_entry->u.dst.dev = dev;
+		net->ipv6.ip6_prohibit_entry->dst.dev = dev;
 		net->ipv6.ip6_prohibit_entry->rt6i_idev = in6_dev_get(dev);
-		net->ipv6.ip6_blk_hole_entry->u.dst.dev = dev;
+		net->ipv6.ip6_blk_hole_entry->dst.dev = dev;
 		net->ipv6.ip6_blk_hole_entry->rt6i_idev = in6_dev_get(dev);
 #endif
 	}
@@ -2464,8 +2458,8 @@ static int rt6_info_route(struct rt6_info *rt, void *p_arg)
 		seq_puts(m, "00000000000000000000000000000000");
 	}
 	seq_printf(m, " %08x %08x %08x %08x %8s\n",
-		   rt->rt6i_metric, atomic_read(&rt->u.dst.__refcnt),
-		   rt->u.dst.__use, rt->rt6i_flags,
+		   rt->rt6i_metric, atomic_read(&rt->dst.__refcnt),
+		   rt->dst.__use, rt->rt6i_flags,
 		   rt->rt6i_dev ? rt->rt6i_dev->name : "");
 	return 0;
 }
@@ -2646,9 +2640,9 @@ static int __net_init ip6_route_net_init(struct net *net)
 					   GFP_KERNEL);
 	if (!net->ipv6.ip6_null_entry)
 		goto out_ip6_dst_ops;
-	net->ipv6.ip6_null_entry->u.dst.path =
+	net->ipv6.ip6_null_entry->dst.path =
 		(struct dst_entry *)net->ipv6.ip6_null_entry;
-	net->ipv6.ip6_null_entry->u.dst.ops = &net->ipv6.ip6_dst_ops;
+	net->ipv6.ip6_null_entry->dst.ops = &net->ipv6.ip6_dst_ops;
 
 #ifdef CONFIG_IPV6_MULTIPLE_TABLES
 	net->ipv6.ip6_prohibit_entry = kmemdup(&ip6_prohibit_entry_template,
@@ -2656,18 +2650,18 @@ static int __net_init ip6_route_net_init(struct net *net)
 					       GFP_KERNEL);
 	if (!net->ipv6.ip6_prohibit_entry)
 		goto out_ip6_null_entry;
-	net->ipv6.ip6_prohibit_entry->u.dst.path =
+	net->ipv6.ip6_prohibit_entry->dst.path =
 		(struct dst_entry *)net->ipv6.ip6_prohibit_entry;
-	net->ipv6.ip6_prohibit_entry->u.dst.ops = &net->ipv6.ip6_dst_ops;
+	net->ipv6.ip6_prohibit_entry->dst.ops = &net->ipv6.ip6_dst_ops;
 
 	net->ipv6.ip6_blk_hole_entry = kmemdup(&ip6_blk_hole_entry_template,
 					       sizeof(*net->ipv6.ip6_blk_hole_entry),
 					       GFP_KERNEL);
 	if (!net->ipv6.ip6_blk_hole_entry)
 		goto out_ip6_prohibit_entry;
-	net->ipv6.ip6_blk_hole_entry->u.dst.path =
+	net->ipv6.ip6_blk_hole_entry->dst.path =
 		(struct dst_entry *)net->ipv6.ip6_blk_hole_entry;
-	net->ipv6.ip6_blk_hole_entry->u.dst.ops = &net->ipv6.ip6_dst_ops;
+	net->ipv6.ip6_blk_hole_entry->dst.ops = &net->ipv6.ip6_dst_ops;
 #endif
 
 	net->ipv6.sysctl.flush_delay = 0;
@@ -2742,12 +2736,12 @@ int __init ip6_route_init(void)
 	/* Registering of the loopback is done before this portion of code,
 	 * the loopback reference in rt6_info will not be taken, do it
 	 * manually for init_net */
-	init_net.ipv6.ip6_null_entry->u.dst.dev = init_net.loopback_dev;
+	init_net.ipv6.ip6_null_entry->dst.dev = init_net.loopback_dev;
 	init_net.ipv6.ip6_null_entry->rt6i_idev = in6_dev_get(init_net.loopback_dev);
   #ifdef CONFIG_IPV6_MULTIPLE_TABLES
-	init_net.ipv6.ip6_prohibit_entry->u.dst.dev = init_net.loopback_dev;
+	init_net.ipv6.ip6_prohibit_entry->dst.dev = init_net.loopback_dev;
 	init_net.ipv6.ip6_prohibit_entry->rt6i_idev = in6_dev_get(init_net.loopback_dev);
-	init_net.ipv6.ip6_blk_hole_entry->u.dst.dev = init_net.loopback_dev;
+	init_net.ipv6.ip6_blk_hole_entry->dst.dev = init_net.loopback_dev;
 	init_net.ipv6.ip6_blk_hole_entry->rt6i_idev = in6_dev_get(init_net.loopback_dev);
   #endif
 	ret = fib6_init();
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 702c532ec21e..4699cd3c3118 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -712,7 +712,7 @@ static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb,
 		stats->tx_carrier_errors++;
 		goto tx_error_icmp;
 	}
-	tdev = rt->u.dst.dev;
+	tdev = rt->dst.dev;
 
 	if (tdev == dev) {
 		ip_rt_put(rt);
@@ -721,7 +721,7 @@ static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb,
 	}
 
 	if (df) {
-		mtu = dst_mtu(&rt->u.dst) - sizeof(struct iphdr);
+		mtu = dst_mtu(&rt->dst) - sizeof(struct iphdr);
 
 		if (mtu < 68) {
 			stats->collisions++;
@@ -780,7 +780,7 @@ static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb,
 	memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
 	IPCB(skb)->flags = 0;
 	skb_dst_drop(skb);
-	skb_dst_set(skb, &rt->u.dst);
+	skb_dst_set(skb, &rt->dst);
 
 	/*
 	 *	Push down and install the IPIP header.
@@ -829,7 +829,7 @@ static void ipip6_tunnel_bind_dev(struct net_device *dev)
 				    .proto = IPPROTO_IPV6 };
 		struct rtable *rt;
 		if (!ip_route_output_key(dev_net(dev), &rt, &fl)) {
-			tdev = rt->u.dst.dev;
+			tdev = rt->dst.dev;
 			ip_rt_put(rt);
 		}
 		dev->flags |= IFF_POINTOPOINT;