netdev - Re: [PATCH net-next] ax88179_178a: avoid copy of tx tcp packets

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Message-Id: <20130803.215614.1931944930674167595.davem@davemloft.net>
Date:	Sat, 03 Aug 2013 21:56:14 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	ming.lei@...onical.com, gregkh@...uxfoundation.org,
	oneukum@...e.de, freddy@...x.com.tw, bhutchings@...arflare.com,
	grundler@...gle.com, netdev@...r.kernel.org,
	linux-usb@...r.kernel.org
Subject: Re: [PATCH net-next] ax88179_178a: avoid copy of tx tcp packets

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Thu, 01 Aug 2013 06:52:45 -0700

> On Thu, 2013-08-01 at 06:49 -0700, Eric Dumazet wrote:
>> From: Eric Dumazet <edumazet@...gle.com>
>> 
>> ax88179_tx_fixup() has quite complex code trying to push 8 bytes
>> of control data (len/mss), but fails to do it properly for TCP packets,
>> incurring an extra copy and point of memory allocation failure.
> 
> I forgot to say this patch is for net-next, but depends on following fix
> from net tree being applied.
> 
> commit 20f0170377264e8449b6987041f0bcc4d746d3ed
> ("usbnet: do not pretend to support SG/TSO")

Thanks for letting me know.

Applied, thanks Eric.
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