[NET]: dst_clone --> dst_hold where appropriate.

net/ipv4/route.c

@@ -930,7 +930,7 @@ void ip_rt_redirect(u32 old_gw, u32 daddr, u32 new_gw,
 				    rth->u.dst.dev != dev)
 					break;
 
-				dst_clone(&rth->u.dst);
+				dst_hold(&rth->u.dst);
 				rcu_read_unlock();
 
 				rt = dst_alloc(&ipv4_dst_ops);

net/ipv6/ip6_output.c

@@ -550,7 +550,7 @@ int ip6_build_xmit(struct sock *sk, inet_getfrag_t getfrag, const void *data,
 		    || (fl->oif && fl->oif != dst->dev->ifindex)) {
 			dst = NULL;
 		} else
-			dst_clone(dst);
+			dst_hold(dst);
 	}
 
 	if (dst == NULL)

net/ipv6/route.c

@@ -356,7 +356,7 @@ static struct rt6_info *rt6_cow(struct rt6_info *ort, struct in6_addr *daddr,
 
 		rt->rt6i_nexthop = ndisc_get_neigh(rt->rt6i_dev, &rt->rt6i_gateway);
 
-		dst_clone(&rt->u.dst);
+		dst_hold(&rt->u.dst);
 
 		err = rt6_ins(rt);
 		if (err == 0)
@@ -366,7 +366,7 @@ static struct rt6_info *rt6_cow(struct rt6_info *ort, struct in6_addr *daddr,
 
 		return rt;
 	}
-	dst_clone(&ip6_null_entry.u.dst);
+	dst_hold(&ip6_null_entry.u.dst);
 	return &ip6_null_entry;
 }
 
@@ -374,7 +374,7 @@ static struct rt6_info *rt6_cow(struct rt6_info *ort, struct in6_addr *daddr,
 if (rt == &ip6_null_entry && strict) { \
        while ((fn = fn->parent) != NULL) { \
 		if (fn->fn_flags & RTN_ROOT) { \
-			dst_clone(&rt->u.dst); \
+			dst_hold(&rt->u.dst); \
 			goto out; \
 		} \
 		if (fn->fn_flags & RTN_RTINFO) \
@@ -404,7 +404,7 @@ void ip6_route_input(struct sk_buff *skb)
 	if ((rt->rt6i_flags & RTF_CACHE)) {
 		rt = rt6_device_match(rt, skb->dev->ifindex, strict);
 		BACKTRACK();
-		dst_clone(&rt->u.dst);
+		dst_hold(&rt->u.dst);
 		goto out;
 	}
 
@@ -424,7 +424,7 @@ void ip6_route_input(struct sk_buff *skb)
 		*/
 		goto relookup;
 	}
-	dst_clone(&rt->u.dst);
+	dst_hold(&rt->u.dst);
 
 out:
 	read_unlock_bh(&rt6_lock);
@@ -455,7 +455,7 @@ struct dst_entry * ip6_route_output(struct sock *sk, struct flowi *fl)
 	if ((rt->rt6i_flags & RTF_CACHE)) {
 		rt = rt6_device_match(rt, fl->oif, strict);
 		BACKTRACK();
-		dst_clone(&rt->u.dst);
+		dst_hold(&rt->u.dst);
 		goto out;
 	}
 	if (rt->rt6i_flags & RTF_DEFAULT) {
@@ -480,7 +480,7 @@ struct dst_entry * ip6_route_output(struct sock *sk, struct flowi *fl)
 		*/
 		goto relookup;
 	}
-	dst_clone(&rt->u.dst);
+	dst_hold(&rt->u.dst);
 
 out:
 	read_unlock_bh(&rt6_lock);
@@ -815,7 +815,7 @@ static int ip6_route_del(struct in6_rtmsg *rtmsg)
 			if (rtmsg->rtmsg_metric &&
 			    rtmsg->rtmsg_metric != rt->rt6i_metric)
 				continue;
-			dst_clone(&rt->u.dst);
+			dst_hold(&rt->u.dst);
 			read_unlock_bh(&rt6_lock);
 
 			return ip6_del_rt(rt);
@@ -878,7 +878,7 @@ void rt6_redirect(struct in6_addr *dest, struct in6_addr *saddr,
 			read_lock(&rt6_lock);
 			for (rt1 = ip6_routing_table.leaf; rt1; rt1 = rt1->u.next) {
 				if (!ipv6_addr_cmp(saddr, &rt1->rt6i_gateway)) {
-					dst_clone(&rt1->u.dst);
+					dst_hold(&rt1->u.dst);
 					dst_release(&rt->u.dst);
 					read_unlock(&rt6_lock);
 					rt = rt1;
@@ -1065,7 +1065,7 @@ struct rt6_info *rt6_get_dflt_router(struct in6_addr *addr, struct net_device *d
 			break;
 	}
 	if (rt)
-		dst_clone(&rt->u.dst);
+		dst_hold(&rt->u.dst);
 	write_unlock_bh(&rt6_lock);
 	return rt;
 }

net/ipv6/tcp_ipv6.c

@@ -800,7 +800,7 @@ static void tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
 
 			dst = ip6_route_output(sk, &fl);
 		} else
-			dst_clone(dst);
+			dst_hold(dst);
 
 		if (dst->error) {
 			sk->err_soft = -dst->error;