netdev - Re: [RFC/PATCH] SO_NO

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Message-Id: <20071122.114621.02788123.yoshfuji@linux-ipv6.org>
Date:	Thu, 22 Nov 2007 11:46:21 +0900 (JST)
From:	YOSHIFUJI Hideaki / 吉藤英明 
	<yoshfuji@...ux-ipv6.org>
To:	herbert@...dor.apana.org.au
Cc:	jeff@...zik.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, davem@...emloft.net,
	yoshfuji@...ux-ipv6.org
Subject: Re: [RFC/PATCH] SO_NO_CHECK for IPv6

In article <20071122023403.GA3409@...dor.apana.org.au> (at Thu, 22 Nov 2007 10:34:03 +0800), Herbert Xu <herbert@...dor.apana.org.au> says:

> On Wed, Nov 21, 2007 at 07:17:40PM -0500, Jeff Garzik wrote:
> >
> > For those interested, I am dealing with a UDP app that already does very 
> > strong checksumming and encryption, so additional software checksumming 
> > at the lower layers is quite simply a waste of CPU cycles.  Hardware 
> > checksumming is fine, as long as its "free."
> 
> No matter how strong your underlying checksumming is it's not
> going to protect the IPv6 header is it :)

In that sense, we should use AH.

--yoshfuji
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