netdev - Re: RFC: New BGF 'LOOP' instruction

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Message-ID: <20100803140539.GE31096@basil.fritz.box>
Date:	Tue, 3 Aug 2010 16:05:39 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	David Miller <davem@...emloft.net>
Cc:	andi@...stfloor.org, leonerd@...nerd.org.uk, netdev@...r.kernel.org
Subject: Re: RFC: New BGF 'LOOP' instruction

On Tue, Aug 03, 2010 at 06:07:54AM -0700, David Miller wrote:
> From: Andi Kleen <andi@...stfloor.org>
> Date: Tue, 03 Aug 2010 14:58:02 +0200
> 
> > David Miller <davem@...emloft.net> writes:
> >>
> >> That makes the looping construct largely useless, which I mentioned in
> >> my second reply to this thread.
> > 
> > How about simply adding a "skip ipv6 extension headers until header type
> > X" opcode?
> > 
> > I bet that would solve most of the problems here in practice.
> 
> BPF really should not have protocol specific opcodes.

Well you could generalize it, like "SKIP headers where length 
is at offset X and type at offset Y" 

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only.
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