1 files changed, 14 insertions, 12 deletions

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 12bba0880345..d1f3e19b06c7 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -109,7 +109,7 @@ static struct dst_ops ip6_dst_ops_template = {
 	.negative_advice	=	ip6_negative_advice,
 	.link_failure		=	ip6_link_failure,
 	.update_pmtu		=	ip6_rt_update_pmtu,
-	.local_out		=	ip6_local_out,
+	.local_out		=	__ip6_local_out,
 	.entry_size		=	sizeof(struct rt6_info),
 	.entries		=	ATOMIC_INIT(0),
 };
@@ -446,7 +446,7 @@ int rt6_route_rcv(struct net_device *dev, u8 *opt, int len,
 	struct route_info *rinfo = (struct route_info *) opt;
 	struct in6_addr prefix_buf, *prefix;
 	unsigned int pref;
-	u32 lifetime;
+	unsigned long lifetime;
 	struct rt6_info *rt;
 
 	if (len < sizeof(struct route_info)) {
@@ -472,13 +472,7 @@ int rt6_route_rcv(struct net_device *dev, u8 *opt, int len,
 	if (pref == ICMPV6_ROUTER_PREF_INVALID)
 		pref = ICMPV6_ROUTER_PREF_MEDIUM;
 
-	lifetime = ntohl(rinfo->lifetime);
-	if (lifetime == 0xffffffff) {
-		/* infinity */
-	} else if (lifetime > 0x7fffffff/HZ) {
-		/* Avoid arithmetic overflow */
-		lifetime = 0x7fffffff/HZ - 1;
-	}
+	lifetime = addrconf_timeout_fixup(ntohl(rinfo->lifetime), HZ);
 
 	if (rinfo->length == 3)
 		prefix = (struct in6_addr *)rinfo->prefix;
@@ -506,7 +500,7 @@ int rt6_route_rcv(struct net_device *dev, u8 *opt, int len,
 				 (rt->rt6i_flags & ~RTF_PREF_MASK) | RTF_PREF(pref);
 
 	if (rt) {
-		if (lifetime == 0xffffffff) {
+		if (!addrconf_finite_timeout(lifetime)) {
 			rt->rt6i_flags &= ~RTF_EXPIRES;
 		} else {
 			rt->rt6i_expires = jiffies + HZ * lifetime;
@@ -1106,7 +1100,9 @@ int ip6_route_add(struct fib6_config *cfg)
 	}
 
 	rt->u.dst.obsolete = -1;
-	rt->rt6i_expires = jiffies + clock_t_to_jiffies(cfg->fc_expires);
+	rt->rt6i_expires = (cfg->fc_flags & RTF_EXPIRES) ?
+				jiffies + clock_t_to_jiffies(cfg->fc_expires) :
+				0;
 
 	if (cfg->fc_protocol == RTPROT_UNSPEC)
 		cfg->fc_protocol = RTPROT_BOOT;
@@ -2200,7 +2196,13 @@ static int rt6_fill_node(struct sk_buff *skb, struct rt6_info *rt,
 
 	NLA_PUT_U32(skb, RTA_PRIORITY, rt->rt6i_metric);
 
-	expires = rt->rt6i_expires ? rt->rt6i_expires - jiffies : 0;
+	if (!(rt->rt6i_flags & RTF_EXPIRES))
+		expires = 0;
+	else if (rt->rt6i_expires - jiffies < INT_MAX)
+		expires = rt->rt6i_expires - jiffies;
+	else
+		expires = INT_MAX;
+
 	if (rtnl_put_cacheinfo(skb, &rt->u.dst, 0, 0, 0,
 			       expires, rt->u.dst.error) < 0)
 		goto nla_put_failure;