netdev - Re: [PATCH] usb: gadget: f_rndis: fix usb_interface

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Date:	Wed, 24 Sep 2014 15:12:31 +0200
From:	Heiko Schocher <hs@...x.de>
To:	Lars Melin <larsm17@...il.com>
CC:	linux-usb@...r.kernel.org, Felipe Balbi <balbi@...com>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	linux-api@...r.kernel.org,
	Andrzej Pietrasiewicz <andrzej.p@...sung.com>,
	Michal Nazarewicz <mina86@...a86.com>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Dan Carpenter <dan.carpenter@...cle.com>,
	Macpaul Lin <macpaul@...il.com>
Subject: Re: [PATCH] usb: gadget: f_rndis: fix usb_interface_descriptor for
 rndis

Hello Lars,

Am 24.09.2014 14:25, schrieb Lars Melin:
> On 2014-09-24 13:48, Heiko Schocher wrote:
>> use the values for RNDIS over Ethernet as defined in
>> http://www.usb.org/developers/defined_class
>> (search for RDNIS):
>>
>> - baseclass: 0xef (miscellaneous)
>> - subclass: 0x04
>> - protocol: 0x01
>>
> That is usb class, it is not the same thing as communication device class.
>> --- a/include/uapi/linux/usb/cdc.h
>> +++ b/include/uapi/linux/usb/cdc.h
>> @@ -12,6 +12,7 @@
>> #include <linux/types.h>
>> #define USB_CDC_SUBCLASS_ACM 0x02
>> +#define USB_CDC_SUBCLASS_RNDIS 0x04
> No, no, no.
> There is no CDC_SUBCLASS_RNDIS and you can not define one over an already used cdc subclass number, 0x04 is Multi-Channel Control Model

Ah, ok, so I have to define this values in a new header file, as there
is no current file for the USB_CLASS_MISC defines? Or is there a proper
place for them?

BTW: where do I find the "cdc subclass number, 0x04 is Multi-Channel
Control Model" define?

bye,
Heiko
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