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From: Christian Lamparter <chunkeey@googlemail.com>
To: "Andrew V. Stepanov" <stanv@altlinux.org>
Subject: Re: carl9170.ko RX - DMA, TX - COPY
Date: Fri, 6 May 2011 15:02:25 +0200
Cc: linux-wireless@vger.kernel.org
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On Friday 06 May 2011 14:13:39 Andrew V. Stepanov wrote:
> What is:
> 
>  ar->fw.tx_stream = true;
> 
What about it? it's a configurable feature. It can be used to 
upload several frames in one urb-[tansfer], but I never looked into
usb sg and it wasn't enabled in the original vendor driver either.

Currently, It just adds another 4 byte [tag + len] to the headroom so
it won't make a difference in your case anyway...

Regards,
	Christian