netdev - Re: [PATCH 1/2] [IPSEC]: Remove nhoff from xfrm

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Message-Id: <20071113.223258.148621375.davem@davemloft.net>
Date:	Tue, 13 Nov 2007 22:32:58 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	herbert@...dor.apana.org.au
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH 1/2] [IPSEC]: Remove nhoff from xfrm_input

From: Herbert Xu <herbert@...dor.apana.org.au>
Date: Wed, 14 Nov 2007 14:27:58 +0800

> [IPSEC]: Remove nhoff from xfrm_input
> 
> The nhoff field isn't actually necessary in xfrm_input.  For tunnel mode
> transforms we now throw away the output IP header so it makes no sense to
> fill in the nexthdr field.  For transport mode we can now let the function
> transport_finish do the setting and it knows where the nexthdr field is.
> 
> The only other thing that needs the nexthdr field to be set is the header
> extraction code.  However, we can simply move the protocol extraction out
> of the generic header extraction.
> 
> We want to minimise the amount of info we have to carry around between
> transforms as this simplifies the resumption process for async crypto.
> 
> Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>

Applied to net-2.6.25
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