netdev - Re: [PATCH v3] net: Do not include padding in TCP GRO checksum

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Message-ID: <20131118000337.GA24090@gondor.apana.org.au>
Date:	Mon, 18 Nov 2013 08:03:37 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Alexander Duyck <alexander.duyck@...il.com>
Cc:	Alexander Duyck <alexander.h.duyck@...el.com>, davem@...emloft.net,
	netdev@...r.kernel.org, edumazet@...gle.com
Subject: Re: [PATCH v3] net: Do not include padding in TCP GRO checksum

On Sun, Nov 17, 2013 at 10:24:36AM -0800, Alexander Duyck wrote:
>
> It seems like it would be much more likely that a checksum error
> occuring with a padded frame would corrupt the flow identifying data
> then one that isn't padded.

Well it doesn't matter anyway because if a packet has an incorrect
checksum it'll be dropped by the receiving stack anyway so a little
reordering is not going to do any harm.  After all, to be 100%
correct, you'd have to flush every single flow between those IP
addresses which is just silly.

Cheers,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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