netdev - Re: [PATCHv3 net-next 2/4] caif: Add support for CAIF over CDC NCM USB interface

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Date:	Mon, 05 Dec 2011 18:46:10 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	sjur.brandeland@...ricsson.com
Cc:	netdev@...r.kernel.org, alexey.orishko@...ricsson.com,
	eric.dumazet@...il.com
Subject: Re: [PATCHv3 net-next 2/4] caif: Add support for CAIF over CDC NCM
 USB interface

From: Sjur Brændeland <sjur.brandeland@...ricsson.com>
Date: Sun,  4 Dec 2011 22:22:53 +0100

> NCM 1.0 does not support anything but Ethernet framing, hence
> CAIF payload will be put into Ethernet frames.
> 
> Discovery is based on fixed USB vendor 0x04cc (ST-Ericsson),
> product-id 0x230f (NCM). In this variant only CAIF payload is sent over
> the NCM interface.
> 
> The CAIF stack (cfusbl.c) will when USB interface register first check if
> we got a CDC NCM USB interface with the right VID, PID.
> It will then read the device's Ethernet address and create a 'template'
> Ethernet TX header, using a broadcast address as the destination address,
> and EthType 0x88b5 (802.1 Local Experimental - vendor specific).
> 
> A protocol handler for 0x88b5 is setup for reception of CAIF frames from
> the CDC NCM USB interface.
> 
> Signed-off-by: Sjur Brændeland <sjur.brandeland@...ricsson.com>

Applied.
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