linux-kernel - Re: [PATCH] ipv6/exthdrs: strict Pad1 and PadN check

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Date:	Sun, 20 May 2012 16:59:52 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	eldad@...refinery.com
Cc:	kuznet@....inr.ac.ru, jmorris@...ei.org, yoshfuji@...ux-ipv6.org,
	kaber@...sh.net, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ipv6/exthdrs: strict Pad1 and PadN check

From: Eldad Zack <eldad@...refinery.com>
Date: Sun, 20 May 2012 13:59:33 +0200

> The following tightens the padding check from commit
> c1412fce7eccae62b4de22494f6ab3ff8a90c0c6 :
> 
> * Take into account combinations of consecutive Pad1 and PadN.
> 
> * Catch the corner case of when only padding is present in the
>   header, when the extention header length is 0 (i.e., 8 bytes).
>   In this case, the header would have exactly 6 bytes of padding:
> 
> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> :  Next Header  : Hdr Ext Len=0 :                               :
> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+                               +
> :                        Padding (Pad1 or PadN)                 :
> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> 
> Signed-off-by: Eldad Zack <eldad@...refinery.com>

Applied to net-next, thanks a lot.
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