Messages in this thread Patch in this message | | | From | Ben Hutchings <> | Date | Sat, 01 Nov 2014 22:28:03 +0000 | Subject | [PATCH 3.2 082/102] ipv6: reallocate addrconf router for ipv6 address when lo device up |
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3.2.64-rc1 review patch. If anyone has any objections, please let me know.
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From: chenweilong <chenweilong@huawei.com>
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.
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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: Ben Hutchings <ben@decadent.org.uk> --- net/ipv6/addrconf.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-)
--- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -2443,8 +2443,18 @@ static void init_loopback(struct net_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->dst); + sp_ifa->rt = NULL; + } else { + continue; + } + } sp_rt = addrconf_dst_alloc(idev, &sp_ifa->addr, 0);
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