netdev - Re: [PATCH] - trivial - Improve appletalk checksum calculation

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Message-Id: <20071022.184340.102771527.davem@davemloft.net>
Date:	Mon, 22 Oct 2007 18:43:40 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	joe@...ches.com
Cc:	acme@...stprotocols.net, netdev@...r.kernel.org
Subject: Re: [PATCH] - trivial - Improve appletalk checksum calculation

From: Joe Perches <joe@...ches.com>
Date: Mon, 22 Oct 2007 18:36:28 -0700

> On Mon, 2007-10-22 at 17:35 -0700, David Miller wrote:
> > Your code is rotating bit 15 down by one bit and bits 0-14 up by one
> > bit.
> 
> Yes, a 16 bit rotate left.
> 
> There was a discussion a few years ago:
> http://oss.sgi.com/archives/netdev/2003-10/msg00734.html
> 
> >From the spec:
 ...
> Reception of a datagram with CkSum equal to 0 implies that a checksum is
> not performed.

Ok, but again did you test it?
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