netdev - Re: [PATCH 20/38] netns ct: NOTRACK in netns

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Date:	Thu, 21 Aug 2008 19:06:37 -0400 (EDT)
From:	Jan Engelhardt <jengelh@...ozas.de>
To:	adobriyan@...il.com
cc:	kaber@...sh.net, netfilter-devel@...r.kernel.org,
	netdev@...r.kernel.org, containers@...ts.linux-foundation.org
Subject: Re: [PATCH 20/38] netns ct: NOTRACK in netns


On Thursday 2008-08-21 18:04, adobriyan@...il.com wrote:

>Make untracked conntrack per-netns.

Why? It does not store any useful information per se, it is
merely used to add a third type of ct, iow:

(a) ct==NULL
(b) ct!=NULL
(c) ct==&untracked

mmap(2)'s return value for example has something similar:

(a) mmap(...)==NULL
(b) mmap(...)==MMAP_FAILED
(c) otherwise

The untracked ct is a singleton, and should stay one, unless
there are further reasons not to do so.

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