netdev - Re: [PATCH 16/24] [IPSEC]: Separate inner/outer mode processing on input

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Date:	Tue, 13 Nov 2007 21:41:40 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	herbert@...dor.apana.org.au
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH 16/24] [IPSEC]: Separate inner/outer mode processing on
 input

From: Herbert Xu <herbert@...dor.apana.org.au>
Date: Wed, 07 Nov 2007 22:08:32 +0800

> [IPSEC]: Separate inner/outer mode processing on input
> 
> With inter-family transforms the inner mode differs from the outer mode.
> Attempting to handle both sides from the same function means that it
> needs to handle both IPv4 and IPv6 which creates duplication and confusion.
> 
> This patch separates the two parts on the input path so that each function
> deals with one family only.
> 
> In particular, the functions xfrm4_extract_inut/xfrm6_extract_inut
> moves the pertinent fields from the IPv4/IPv6 IP headers into a neutral
> format stored in skb->cb.  This is then used by the inner mode input
> functions to modify the inner IP header.  In this way the input function
> no longer has to know about the outer address family.
> 
> Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>

Applied to net-2.6.25
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