diff options
Diffstat (limited to 'net/ipv6/route.c')
| -rw-r--r-- | net/ipv6/route.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/net/ipv6/route.c b/net/ipv6/route.c index 12ec83d48806..ad8556e6fd41 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -240,6 +240,13 @@ static void ip6_dst_destroy(struct dst_entry *dst) } } +static atomic_t __rt6_peer_genid = ATOMIC_INIT(0); + +static u32 rt6_peer_genid(void) +{ + return atomic_read(&__rt6_peer_genid); +} + void rt6_bind_peer(struct rt6_info *rt, int create) { struct inet_peer *peer; @@ -247,6 +254,8 @@ void rt6_bind_peer(struct rt6_info *rt, int create) peer = inet_getpeer_v6(&rt->rt6i_dst.addr, create); if (peer && cmpxchg(&rt->rt6i_peer, NULL, peer) != NULL) inet_putpeer(peer); + else + rt->rt6i_peer_genid = rt6_peer_genid(); } static void ip6_dst_ifdown(struct dst_entry *dst, struct net_device *dev, @@ -912,9 +921,14 @@ static struct dst_entry *ip6_dst_check(struct dst_entry *dst, u32 cookie) rt = (struct rt6_info *) dst; - if (rt->rt6i_node && (rt->rt6i_node->fn_sernum == cookie)) + if (rt->rt6i_node && (rt->rt6i_node->fn_sernum == cookie)) { + if (rt->rt6i_peer_genid != rt6_peer_genid()) { + if (!rt->rt6i_peer) + rt6_bind_peer(rt, 0); + rt->rt6i_peer_genid = rt6_peer_genid(); + } return dst; - + } return NULL; } |