From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH RFC] net/macb: Fix UDPv4 checksum offload
Date: Tue, 28 Apr 2015 16:47:51 -0400 (EDT)
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Cc: nicolas.ferre@atmel.com, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org, jeff.westfahl@ni.com,
	mihai.neagu@ni.com
To: jaeden.amero@ni.com
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From: Jaeden Amero <jaeden.amero@ni.com>
Date: Tue, 28 Apr 2015 15:36:54 -0500

> On 04/27/2015 09:47 PM, David Miller wrote:
>> From: Jaeden Amero <jaeden.amero@ni.com>
>> Date: Mon, 27 Apr 2015 17:43:30 -0500
>>
>> A UDP checksum of zero, means "checksum not computed".  And your
>> device isn't computing the checksum at all, but rather is leaving it
>> at zero.
> 
> The "zero" checksum is not what gets sent over the wire. Independent of
> the value of the checksum field, hardware generates a correct checksum
> for payloads of 3 or more bytes. The bug is that hardware generates an
> incorrect checksum for payloads of 2 or less bytes, unless the checksum
> field is zeroed.

Ok, then you need to add a comment here, because other people might come
to the same conclusion I did.