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From: Daniel Lezcano <daniel.lezcano@free.fr>
To: David Miller <davem@davemloft.net>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>,
	Linux Containers <containers@lists.osdl.org>,
	netdev@vger.kernel.org, Alexey Dobriyan <adobriyan@gmail.com>,
	"Denis V. Lunev" <den@openvz.org>
Subject: Re: [PATCH 0/3] Fix Network namespace shutdown take 2
Date: Wed, 25 Feb 2009 13:43:29 +0100	[thread overview]
Message-ID: <49A53CF1.5060503@free.fr> (raw)
In-Reply-To: <m1ocwxi00a.fsf@fess.ebiederm.org>

Eric W. Biederman wrote:
> 6 months ago when I introduced net_alive I fixed the symptoms
> but I failed to properly fix network namespace shutdown.
>
> I realized this when I received a bug report on Tuesday about a
> failure in icmp_send caused by packets in the arp_gueue.
>
> It turns out that the net_alive check in netif_receive_skb
> is completely unnecessary and just masked the real problem.
>
> If we remove all network devices from a network namespace before we
> shutdown network subsystems and protocols then as designed we cannot
> have packets in flight causing problems.
>
> It turns out that the root cause of these problems is that the icmp
> code was calling register_pernet_device instead of
> register_pernet_subsys and so it's cleanup was happening much too
> early.
>
> The following patchset which should work against both 2.6.29-rcX
> and net-next fixes the registration problems and removes the
> unncessary net_alive check, making the code simpler and hopefully
> more comprehensible.
>   
Hi Dave,

I don't see these patches in the net-2.6 tree. Shouldn't they be in 
net-2.6 too ?

  -- Daniel

  parent reply	other threads:[~2009-02-25 12:43 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-02-20 15:47 [PATCH 0/3] Fix Network namespace shutdown take 2 Eric W. Biederman
2009-02-20 15:52 ` [PATCH 1/3] netns: Fix icmp shutdown Eric W. Biederman
2009-02-20 15:53   ` [PATCH 2/3] tcp: Like icmp use register_pernet_subsys Eric W. Biederman
     [not found]     ` <m163j5hzow.fsf_-_-+imSwln9KH6u2/kzUuoCbdi2O/JbrIOy@public.gmane.org>
2009-02-20 15:57       ` Denis V. Lunev
2009-02-22  8:10         ` David Miller
2009-02-20 16:02     ` [PATCH 3/3] netns: Remove net_alive Eric W. Biederman
2009-02-22  8:11       ` David Miller
     [not found]   ` <m1bpsxhzqz.fsf-+imSwln9KH6u2/kzUuoCbdi2O/JbrIOy@public.gmane.org>
2009-02-20 15:57     ` [PATCH 1/3] netns: Fix icmp shutdown Denis V. Lunev
2009-02-22  8:09       ` David Miller
2009-02-25 12:43 ` Daniel Lezcano [this message]
2009-03-03  9:07   ` [PATCH 0/3] Fix Network namespace shutdown take 2 David Miller
2009-03-05 12:35     ` Daniel Lezcano

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