diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv6/addrconf.c | 15 |
1 files changed, 5 insertions, 10 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 9228030e3497..c1a5028f394c 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -956,9 +956,8 @@ static u32 inet6_addr_hash(const struct in6_addr *addr) } static bool ipv6_chk_same_addr(struct net *net, const struct in6_addr *addr, - struct net_device *dev) + struct net_device *dev, unsigned int hash) { - unsigned int hash = inet6_addr_hash(addr); struct inet6_ifaddr *ifp; hlist_for_each_entry(ifp, &inet6_addr_lst[hash], addr_lst) { @@ -974,23 +973,19 @@ static bool ipv6_chk_same_addr(struct net *net, const struct in6_addr *addr, static int ipv6_add_addr_hash(struct net_device *dev, struct inet6_ifaddr *ifa) { - unsigned int hash; + unsigned int hash = inet6_addr_hash(&ifa->addr); int err = 0; spin_lock(&addrconf_hash_lock); /* Ignore adding duplicate addresses on an interface */ - if (ipv6_chk_same_addr(dev_net(dev), &ifa->addr, dev)) { + if (ipv6_chk_same_addr(dev_net(dev), &ifa->addr, dev, hash)) { ADBG("ipv6_add_addr: already assigned\n"); err = -EEXIST; - goto out; + } else { + hlist_add_head_rcu(&ifa->addr_lst, &inet6_addr_lst[hash]); } - /* Add to big hash table */ - hash = inet6_addr_hash(&ifa->addr); - hlist_add_head_rcu(&ifa->addr_lst, &inet6_addr_lst[hash]); - -out: spin_unlock(&addrconf_hash_lock); return err; |