From: chenweilong <chenweilong@huawei•com>
To: David Miller <davem@davemloft•net>
Cc: netdev <netdev@vger•kernel.org>
Subject: [PATCH 3.4-stable] ipv6: reallocate addrconf router for ipv6 address when lo, device up
Date: Thu, 19 Jun 2014 08:50:33 +0800 [thread overview]
Message-ID: <53A233D9.8070202@huawei.com> (raw)
Hi David,
Please queue this for 3.4 stable kernel.
It fix the bug 67951 on bugzilla
https://bugzilla.kernel.org/show_bug.cgi?id=67951
The patch can't be applied directly, as it' used the function introduced
by "commit 94e187c0" ip6_rt_put(), that patch can't be applied directly
either. So I had to write this one.
====================
From: Gao feng <gaofeng@cn•fujitsu.com>
commit 33d99113b1102c2d2f8603b9ba72d89d915c13f5 upstream.
This commit don't have a stable tag, but it fix the bug
no reply after loopback down-up.It's very worthy to be
applied to stable 3.4 kernels.
The bug is 67951 on bugzilla
https://bugzilla.kernel.org/show_bug.cgi?id=67951
CC: Sabrina Dubroca <sd@queasysnail•net>
CC: Hannes Frederic Sowa <hannes@stressinduktion•org>
Reported-by: Weilong Chen <chenweilong@huawei•com>
Signed-off-by: Weilong Chen <chenweilong@huawei•com>
Signed-off-by: Gao feng <gaofeng@cn•fujitsu.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion•org>
Signed-off-by: David S. Miller <davem@davemloft•net>
[weilong: s/ip6_rt_put/dst_release]
Signed-off-by: Chen Weilong <chenweilong@huawei•com>
Signed-off-by: Li Zefan <lizefan@huawei•com>
---
net/ipv6/addrconf.c | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index abfa007..25399bf 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -2435,8 +2435,18 @@ static void init_loopback(struct net_device *dev)
if (sp_ifa->flags & (IFA_F_DADFAILED | IFA_F_TENTATIVE))
continue;
- if (sp_ifa->rt)
- continue;
+ if (sp_ifa->rt) {
+ /* This dst has been added to garbage list when
+ * lo device down, release this obsolete dst and
+ * reallocate a new router for ifa.
+ */
+ if (sp_ifa->rt->dst.obsolete > 0) {
+ dst_release(sp_ifa->rt);
+ sp_ifa->rt = NULL;
+ } else {
+ continue;
+ }
+ }
sp_rt = addrconf_dst_alloc(idev, &sp_ifa->addr, 0);
-- 1.7.12
next reply other threads:[~2014-06-19 0:50 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-19 0:50 chenweilong [this message]
2014-07-25 4:08 ` [PATCH 3.4-stable] ipv6: reallocate addrconf router for ipv6 address when lo, device up David Miller
2014-08-06 8:01 ` chenweilong
-- strict thread matches above, loose matches on Subject: below --
2014-07-09 1:35 chenweilong
2014-06-17 10:23 chenweilong
2014-08-05 18:18 ` Greg KH
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