linux-kernel - Re: [PATCH] netfilter: per netns nf_conntrack

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Message-Id: <1265226838.2861.307.camel@tonnant>
Date:	Wed, 03 Feb 2010 14:53:58 -0500
From:	Jon Masters <jonathan@...masters.org>
To:	Alexey Dobriyan <adobriyan@...il.com>
Cc:	Patrick McHardy <kaber@...sh.net>,
	Eric Dumazet <eric.dumazet@...il.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	netdev <netdev@...r.kernel.org>,
	netfilter-devel <netfilter-devel@...r.kernel.org>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Subject: Re: [PATCH] netfilter: per netns nf_conntrack_cachep

On Wed, 2010-02-03 at 21:51 +0200, Alexey Dobriyan wrote:
> On Wed, Feb 03, 2010 at 02:43:47PM -0500, Jon Masters wrote:
> > On Wed, 2010-02-03 at 21:09 +0200, Alexey Dobriyan wrote:
> > > On Wed, Feb 03, 2010 at 01:38:09PM -0500, Jon Masters wrote:

> > > > I also think it is necessary to expose net namespace layout
> > > 
> > > Not necessary. Why?
> > 
> > How am I as a sysadmin supposed to figure out which net namespaces exist
> > on my system, and as a developer, supposed to debug these situations?
> 
> We don't expose many relations to userspace, and it's generally fine.

I can see slabs via /proc, memory layout, heck I can even expose the
kernel page tables if I really want to. I guess that's not too many :)

> As a developer you fire a debugger and look at net_namespace_list.

Yeah, but being able to cat a nice file is always handy.

Jon.


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