X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=net%2Fipv6%2Froute.c;h=efe036aa3dd1bbb02384d893b185768720c67695;hb=865c652d6be9929927cabdc54b137b7541eb6612;hp=48534c6c073538a652e873f78bb4be1abbda2909;hpb=a5b17df04c4ad8f25fc598fce37fccb4b387c94c;p=linux-2.6-omap-h63xx.git

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 48534c6c073..efe036aa3dd 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -5,8 +5,6 @@
  *	Authors:
  *	Pedro Roque		<roque@di.fc.ul.pt>
  *
- *	$Id: route.c,v 1.56 2001/10/31 21:55:55 davem Exp $
- *
  *	This program is free software; you can redistribute it and/or
  *      modify it under the terms of the GNU General Public License
  *      as published by the Free Software Foundation; either version
@@ -446,7 +444,7 @@ 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 +470,7 @@ 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 - 1) {
-		/* 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 +498,7 @@ 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;
@@ -2202,8 +2194,12 @@ 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_flags & RTF_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)