netdev - Re: [PATCH] ipv4/ip_vti.c: VTI fix post-decryption forwarding

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Message-Id: <20121114.214102.987670183731141557.davem@davemloft.net>
Date:	Wed, 14 Nov 2012 21:41:02 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	saurabh.mohan@...tta.com
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH] ipv4/ip_vti.c: VTI fix post-decryption forwarding

From: Saurabh Mohan <saurabh.mohan@...tta.com>
Date: Wed, 14 Nov 2012 18:08:15 -0800

> 
> 
> With the latest kernel there are two things that must be done post decryption
>  so that the packet are forwarded.
>  1. Remove the mark from the packet. This will cause the packet to not match
>  the ipsec-policy again. However doing this causes the post-decryption check to
>  fail also and the packet will get dropped. (cat /proc/net/xfrm_stat).
>  2. Remove the sp association in the skbuff so that no policy check is done on
>  the packet for VTI tunnels.
> 
> Due to #2 above we must now do a security-policy check in the vti rcv path
> prior to resetting the mark in the skbuff.
> 
> Signed-off-by: Saurabh Mohan <saurabh.mohan@...tta.com>
> Reported-by: Ruben Herold <ruben@...ttmann.net>

Applied, and queued up for -stable, thanks.
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