netdev - Re: unlock iptables in netns

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Message-ID: <485CB5E7.3000500@trash.net>
Date:	Sat, 21 Jun 2008 10:03:51 +0200
From:	Patrick McHardy <kaber@...sh.net>
To:	Alexey Dobriyan <adobriyan@...il.com>
CC:	netfilter-devel@...r.kernel.org, netdev@...r.kernel.org,
	devel@...nvz.org, den@...nvz.org, xemul@...nvz.org
Subject: Re: unlock iptables in netns

Alexey Dobriyan wrote:
> On Mon, Jun 16, 2008 at 01:16:00PM +0200, Patrick McHardy wrote:
>> Alexey Dobriyan wrote:
>>> On Mon, Jun 16, 2008 at 12:26:03PM +0200, Patrick McHardy wrote:
>>>> By the way, is there already work done for conntrack/NAT namespace
>>>> support? I have this patch that uses marks for something very similar
>>>> that should be easy to adjust.
>>> Yes, right now I'm fighting something which looks like double free
>>> of conntrack during clone(CLONE_NEWNET)/exit test despite none created
>>> in netns. And unknown to me dimensions of input and output packet 
>>> codepaths.
>>> :^)
>>> Preliminaty details:
>>> 	struct nf_conn::ct_net which pins netns
> 
> Ouch, now that I have converted conntracking code, "pins netns" part is
> really stupid, just background traffic on network will prevent netns from
> destroying.

Can't you do active cleanup instead of pinning the namespace?
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