From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Hemminger Subject: [PATCH 2/4] IPv6: keep tentative addresses in hash table Date: Mon, 12 Apr 2010 08:41:32 -0700 Message-ID: <20100412154255.722417369@vyatta.com> References: <20100412154130.397252857@vyatta.com> Cc: netdev@vger.kernel.org To: davem@davemloft.net Return-path: Received: from suva.vyatta.com ([76.74.103.44]:47330 "EHLO suva.vyatta.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751388Ab0DLPql (ORCPT ); Mon, 12 Apr 2010 11:46:41 -0400 Content-Disposition: inline; filename=ipv6-addrconf2.patch Sender: netdev-owner@vger.kernel.org List-ID: 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 --- a/net/ipv6/addrconf.c 2010-04-11 12:25:05.349309074 -0700 +++ b/net/ipv6/addrconf.c 2010-04-11 12:25:10.408996382 -0700 @@ -2703,17 +2703,18 @@ static int addrconf_ifdown(struct net_de /* 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); --