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Diffstat (limited to 'net/ipv6/route.c')
-rw-r--r--net/ipv6/route.c12
1 files changed, 3 insertions, 9 deletions
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 48534c6c0735..220cffe9e63b 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -446,7 +446,7 @@ int rt6_route_rcv(struct net_device *dev, u8 *opt, int len,
446 struct route_info *rinfo = (struct route_info *) opt; 446 struct route_info *rinfo = (struct route_info *) opt;
447 struct in6_addr prefix_buf, *prefix; 447 struct in6_addr prefix_buf, *prefix;
448 unsigned int pref; 448 unsigned int pref;
449 u32 lifetime; 449 unsigned long lifetime;
450 struct rt6_info *rt; 450 struct rt6_info *rt;
451 451
452 if (len < sizeof(struct route_info)) { 452 if (len < sizeof(struct route_info)) {
@@ -472,13 +472,7 @@ int rt6_route_rcv(struct net_device *dev, u8 *opt, int len,
472 if (pref == ICMPV6_ROUTER_PREF_INVALID) 472 if (pref == ICMPV6_ROUTER_PREF_INVALID)
473 pref = ICMPV6_ROUTER_PREF_MEDIUM; 473 pref = ICMPV6_ROUTER_PREF_MEDIUM;
474 474
475 lifetime = ntohl(rinfo->lifetime); 475 lifetime = addrconf_timeout_fixup(ntohl(rinfo->lifetime), HZ);
476 if (lifetime == 0xffffffff) {
477 /* infinity */
478 } else if (lifetime > 0x7fffffff/HZ - 1) {
479 /* Avoid arithmetic overflow */
480 lifetime = 0x7fffffff/HZ - 1;
481 }
482 476
483 if (rinfo->length == 3) 477 if (rinfo->length == 3)
484 prefix = (struct in6_addr *)rinfo->prefix; 478 prefix = (struct in6_addr *)rinfo->prefix;
@@ -506,7 +500,7 @@ int rt6_route_rcv(struct net_device *dev, u8 *opt, int len,
506 (rt->rt6i_flags & ~RTF_PREF_MASK) | RTF_PREF(pref); 500 (rt->rt6i_flags & ~RTF_PREF_MASK) | RTF_PREF(pref);
507 501
508 if (rt) { 502 if (rt) {
509 if (lifetime == 0xffffffff) { 503 if (!addrconf_finite_timeout(lifetime)) {
510 rt->rt6i_flags &= ~RTF_EXPIRES; 504 rt->rt6i_flags &= ~RTF_EXPIRES;
511 } else { 505 } else {
512 rt->rt6i_expires = jiffies + HZ * lifetime; 506 rt->rt6i_expires = jiffies + HZ * lifetime;