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

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Message-Id: <200907221041.51995.oliver@neukum.org>
Date:	Wed, 22 Jul 2009 10:41:51 +0200
From:	Oliver Neukum <oliver@...kum.org>
To:	"Rémi Denis-Courmont" 
	<remi.denis-courmont@...ia.com>
Cc:	ext Dan Williams <dcbw@...hat.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
	ext Marcel Holtmann <marcel@...tmann.org>
Subject: Re: [PATCH] USB host CDC Phonet network interface driver

Am Mittwoch, 22. Juli 2009 10:37:06 schrieb Rémi Denis-Courmont:
> 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.

The AT stuff is really problematic. Look at the hoops ISDN and software
modem drivers go through to emulate AT commands. I know even of a CDC-ACM
modem which can't deal with AT commands inline (that's within spec).
It seems to me we should have a modem API in kernel.

	Regards
		Oliver

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