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IPv6: keep tentative addresses in hash table 

When link goes down, want address to be preserved but in a tentative
state, therefore it has to stay in hash list.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
stephen hemminger 2010-04-12 05:41:32 +00:00 committed by David S. Miller
parent 93fa159abe
commit 27bdb2abcc
1 changed files with 8 additions and 7 deletions
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15
net/ipv6/addrconf.c
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@ -2704,17 +2704,18 @@ static int addrconf_ifdown(struct net_device *dev, int how)
/* Flag it for later restoration when link comes up */
ifa->flags |= IFA_F_TENTATIVE;
in6_ifa_hold(ifa);
write_unlock_bh(&idev->lock);
} else {
list_del(&ifa->if_list);
ifa->dead = 1;
}
write_unlock_bh(&idev->lock);
write_unlock_bh(&idev->lock);
/* clear hash table */
spin_lock_bh(&addrconf_hash_lock);
hlist_del_init_rcu(&ifa->addr_lst);
__in6_ifa_put(ifa);
spin_unlock_bh(&addrconf_hash_lock);
/* clear hash table */
spin_lock_bh(&addrconf_hash_lock);
hlist_del_init_rcu(&ifa->addr_lst);
__in6_ifa_put(ifa);
spin_unlock_bh(&addrconf_hash_lock);
}
__ipv6_ifa_notify(RTM_DELADDR, ifa);
atomic_notifier_call_chain(&inet6addr_chain, NETDEV_DOWN, ifa);