diff options
Diffstat (limited to '')
| -rw-r--r-- | net/ipv6/route.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/net/ipv6/route.c b/net/ipv6/route.c index 7c34c01b515b..1341f68e8009 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -499,22 +499,26 @@ static void rt6_probe(struct rt6_info *rt) * to no more than one per minute. */ neigh = rt ? rt->n : NULL; - if (!neigh || (neigh->nud_state & NUD_VALID)) + if (!neigh) + return; + write_lock_bh(&neigh->lock); + if (neigh->nud_state & NUD_VALID) { + write_unlock_bh(&neigh->lock); return; - read_lock_bh(&neigh->lock); + } if (!(neigh->nud_state & NUD_VALID) && time_after(jiffies, neigh->updated + rt->rt6i_idev->cnf.rtr_probe_interval)) { struct in6_addr mcaddr; struct in6_addr *target; neigh->updated = jiffies; - read_unlock_bh(&neigh->lock); + write_unlock_bh(&neigh->lock); target = (struct in6_addr *)&neigh->primary_key; addrconf_addr_solict_mult(target, &mcaddr); ndisc_send_ns(rt->dst.dev, NULL, target, &mcaddr, NULL); } else { - read_unlock_bh(&neigh->lock); + write_unlock_bh(&neigh->lock); } } #else |