netdev - Re: udp checksum issue in netpoll mode.

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Message-ID: <461E470B.5060907@linux-foundation.org>
Date:	Thu, 12 Apr 2007 07:49:47 -0700
From:	Stephen Hemminger <shemminger@...ux-foundation.org>
To:	Aubrey Li <aubreylee@...il.com>
CC:	Herbert Xu <herbert@...dor.apana.org.au>,
	Matt Mackall <mpm@...enic.com>, netdev@...r.kernel.org,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: udp checksum issue in netpoll mode.

Aubrey Li wrote:
> I think we discussed this issue before.
>
> The current checksum function doesn't consider the kind of packet
> which is padded to reach a specific minimum length. I believe that's
> the problem caused my test case failed. Is this issue fixed? Or is it
> acceptable if I make a patch not calculating this kind of packet?
>
> Thanks,
> -Aubrey
The caller should be trimming the packet and updating the hardware checksum
value (like the normal UDP path).
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