Fwd: Antwort: Re: vUDC

[Krzysztof Opasiak <k.opasiak@samsung.com>]

FYI to the list for next generations;)


-------- Forwarded Message --------
Subject: Antwort: Re: vUDC
Date: Fri, 9 Dec 2016 09:00:04 +0100
From: Elen Niedermeyer <elen.niedermeyer@biotronik.com>
To: Krzysztof Opasiak <k.opasiak@samsung.com>


Hi,

so your script solved my problem. I didn't know that I should start the
daemon with 'usbipd --device' after starting my emulation. I've tried it
with 'usbip -d' and then bind my device with 'usbip bind -b BUSID'. But
there wasn't listet a device by usbip with 'usbip list -l', so I didn't
know what I have to bind.  Mit freundlichen Grüßen
Kind regards,

i.A. Elen Niedermeyer
Duale Studentin Informatik
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-----Krzysztof Opasiak <k.opasiak@samsung.com> schrieb: -----
An: Shuah Khan <shuahkhan@gmail.com>, Elen Niedermeyer
<elen.niedermeyer@biotronik.com>
Von: Krzysztof Opasiak <k.opasiak@samsung.com>
Datum: 08.12.2016 16:11
Kopie: linux-usb@vger.kernel.org, kernelnewbies@nl.linux.org, LKML
<linux-kernel@vger.kernel.org>, shuah@kernel.org
Betreff: Re: vUDC

Hi,

On 12/08/2016 03:33 PM, Shuah Khan wrote:
> Hi Elen,
> 
> Adding k.opasiak@samsung.com
> 
> On Thu, Dec 8, 2016 at 7:07 AM, Elen Niedermeyer
> <elen.niedermeyer@biotronik.com> wrote:
>> Dear Sir or Madam,
>>
>> I'm trying to run usbip-vudc since a few days. I want to access my emulated usb devices over usbip.
>> I use Ubuntu 16.04.01 and updated my kernel to version 4.8.0-30. I've installed linux-tools-4.8.0-30-generic which includes usbip. I enabled the modules usbip-host and usbip-vudc on the server. Futhermore I use configfs to emulate the usb devices.
>> So I could start the daemon and my emulation. But I can't detect my emulated usb device with usbip to bind it.
>> Could you help me to run usbip-vudc? Do I have to install an additional package? Do I miss a step?
>>
>> Mit freundlichen Grüßen
>> Kind regards,
> 
> Could you please send your dmesg? Also could you run usbipd with
> --debug and usbip with --log option and send the syslog
> 
> Krzysztof,
> 

You setup script should look like this:

Server:
$ modprobe usbip-vudc
# Create your gadget, for example:
$ cd /sys/kernel/config/usb_gadget
$ mkdir g1
$ mkdir g1/functions/acm.ser0
$ mkdir g1/configs/c.1
$ ln -s g1/functions/acm.ser0 g1/configs/c.1
$ echo "0x1234" > g1/idVendor
$ echo "0x5678" > g1/idProduct
$ echo usbip-vudc.0 > UDC
$ usbipd --device

Client:
$ modprobe usbip-vhci
$ usbip attach -r $SERVER_IP -d usbip-vudc.0

Please let me know if your setup script is similar and what exactly is
not working for you.

> Any ideas. Maybe it is time the documentation is updated with vudc details.
> 

Yes I think it's a good idea. I'll try to do this when I have some spare
time.

Best regards,
-- 
Krzysztof Opasiak
Samsung R&D Institute Poland
Samsung Electronics


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