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Date: Fri, 3 Jun 2011 12:50:27 +0200 From: Oliver Neukum <oneukum@...e.de> To: Alexey ORISHKO <alexey.orishko@...ricsson.com> Cc: "Valdis.Kletnieks@...edu" <Valdis.Kletnieks@...edu>, Dan Williams <dcbw@...hat.com>, Stefan Metzmacher <metze@...ba.org>, Oliver Neukum <oliver@...kum.name>, "Greg Kroah-Hartman" <gregkh@...e.de>, "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>, "netdev@...r.kernel.org" <netdev@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: Re: [PATCH] TODO FLAG_POINTTOPOINT => FLAG_WWAN? usbnet/cdc_ncm: mark ncm devices as "mobile broadband devices" with FLAG_WWAN Am Freitag, 3. Juni 2011, 12:23:21 schrieb Alexey ORISHKO: > There is no difference between cdc_ncm and cdc_ether devices, besides > the fact cdc_ncm is more efficient in data transfer and cpu load. > The problem is that you cannot say much about device functionality based > just on interface name. As example existing devices with cdc_ether > interface could be mobile phone which provides connectivity to 3G network, > or could be a phone in the mode "over PC", where phone applications > access internet via broadband connection on PC (to save money). > > Network manager cannot simply make decision which devices can be used > for mobile broadband access based on interface name. It needs an additional > info, which does not exist in device descriptor. Well, but cdc-ether usually means that you can start up dhcp and use the interface as a network card. Can the same be done with cdc-ncm or do you always need to establish a connection through a secondary interface? Regards Oliver -- - - - SUSE LINUX Products GmbH, GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer, HRB 16746 (AG Nürnberg) Maxfeldstraße 5 90409 Nürnberg Germany - - - -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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