Re: [PATCH] USB host CDC Phonet network interface driver

On Tuesday 21 July 2009 16:52:53 ext Dan Williams wrote:

quoted

This was tested against Nokia E61, Nokia N95, and the existing Phonet
gadget function for the Linux composite USB gadget framework.

Is there an example somewhere of how to use Phonet to get a mobile
broadband connection in place of usb-serial and PPP?

Not yet, I'm afraid.

I've read the
Phonet protocol description and other random docs I can find, but can't
figure out how that would work.  Or does "PC Suite" mode not support
that?

PC suite does provide access to packet data. The existing pn_pep kernel module 
provides data path (IPv4 or IPv6 packets) and flow control. But GPRS context 
credentials, IP/DNS parameters, setup/teardown, etc, are missing. I am not 
sure where the user/kernel split should be here...

I guess in a perfect world, Linux would provide a common control interface for 
GPRS as it already does WiFi (and maybe soon will for WiMAX?). But I am not 
sure we can unify AT+PPP, Phonet, AT+Ethernet and who knows what else, behind 
a common Netlink interface, especially as AT commands have always been done in 
userland anyway.

Or what did you have in mind?

-- 
Rémi Denis-Courmont
Nokia Devices R&D, Maemo Software, Helsinki


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