Phonet userspace bits?

Phonet userspace bits?

[dag]

Hi.

How do an end-user make use of a phonet network interface?

Nov 15 16:31:54 toshr500 usb 1-1: New USB device found, idVendor=0421, idProduct=046e
Nov 15 16:31:54 toshr500 usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
Nov 15 16:31:54 toshr500 usb 1-1: Product: Nokia 6110 Navigator
Nov 15 16:31:54 toshr500 usb 1-1: Manufacturer: Nokia
Nov 15 16:31:54 toshr500 usb 1-1: configuration #1 chosen from 1 choice
Nov 15 16:31:54 toshr500 cdc_acm 1-1:1.8: ttyACM0: USB ACM device

So I can use /dev/ttyACM0 with pppd and get a 3G connection. so far, so good.

But what is the usbpn0 network interface, and could I use that instead of fiddling with chatscripts and pppd, to get a 3G connection?
Is this feature complete? 

Google came up short on this topic, and the kernel documentation did not enlighten me.
The best I find is http://kerneltrap.org/mailarchive/linux-usb/2009/7/21/6243913 .
Does this still describe the current state of affairs?


Thanks,

Dag B 

Re: Phonet userspace bits?

[Rémi Denis-Courmont]

	Hello,

Le dimanche 15 novembre 2009 18:15:25 dag@bakke.com, vous avez écrit :
> How do an end-user make use of a phonet network interface?
> 
> Nov 15 16:31:54 toshr500 usb 1-1: New USB device found, idVendor=0421,
>  idProduct=046e Nov 15 16:31:54 toshr500 usb 1-1: New USB device strings:
>  Mfr=1, Product=2, SerialNumber=0 Nov 15 16:31:54 toshr500 usb 1-1:
>  Product: Nokia 6110 Navigator
> Nov 15 16:31:54 toshr500 usb 1-1: Manufacturer: Nokia
> Nov 15 16:31:54 toshr500 usb 1-1: configuration #1 chosen from 1 choice
> Nov 15 16:31:54 toshr500 cdc_acm 1-1:1.8: ttyACM0: USB ACM device
> 
> So I can use /dev/ttyACM0 with pppd and get a 3G connection. so far, so
>  good.
> 
> But what is the usbpn0 network interface, and could I use that instead of
>  fiddling with chatscripts and pppd, to get a 3G connection? Is this
>  feature complete?

Just like with PPP, only the Phonet data path is implemented in kernel. The 
setup is done in userspace. In theory, it could be done in kernelspace too, 
but there was strong reluctance against this on usb-devel. And well, maybe we 
don't want to taint the kernel with too much of the GPRS specifics.

There was a preliminary patch adding the userspace bits to oFono here:
http://lists.ofono.org/pipermail/ofono/2009-September/000376.html
(especially part 0003) but this is still work in progress.

Best regards,

-- 
Rémi Denis-Courmont
http://www.remlab.net/