From mboxrd@z Thu Jan 1 00:00:00 1970 From: Greg KH Subject: Re: Understanding what's going on when using a Huawei E173 USB 3G web-stick (UMTS/HSPA) Date: Sat, 15 Nov 2014 12:07:11 -0800 Message-ID: <20141115200711.GA24643@kroah.com> References: <1415120132.31049.11.camel@dcbw.local> <1415981880.22965.28.camel@dcbw.local> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Dan Williams , "David S. Miller" , "netdev@vger.kernel.org" , linux-usb@vger.kernel.org, Aleksander Morgado To: Sedat Dilek Return-path: Received: from out4-smtp.messagingengine.com ([66.111.4.28]:46525 "EHLO out4-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754436AbaKOUHO (ORCPT ); Sat, 15 Nov 2014 15:07:14 -0500 Received: from compute4.internal (compute4.nyi.internal [10.202.2.44]) by mailout.nyi.internal (Postfix) with ESMTP id 0FD13208BB for ; Sat, 15 Nov 2014 15:07:13 -0500 (EST) Content-Disposition: inline In-Reply-To: Sender: netdev-owner@vger.kernel.org List-ID: On Sat, Nov 15, 2014 at 10:23:55AM +0100, Sedat Dilek wrote: > On Fri, Nov 14, 2014 at 5:18 PM, Dan Williams wrote: > > On Fri, 2014-11-14 at 11:56 +0100, Sedat Dilek wrote: > >> On Wed, Nov 12, 2014 at 2:21 PM, Sedat Dilek wrote: > >> > On Tue, Nov 4, 2014 at 5:55 PM, Dan Williams wrote: > >> >> On Tue, 2014-11-04 at 16:11 +0100, Sedat Dilek wrote: > >> >>> Hi, > >> >>> > >> >>> I wanted to understand what is going on the kernel-side when > >> >>> connecting to the Internet via a Huawei E173 USB web-stick (3rd > >> >>> Generation: UMTS / HSPA). > >> >>> > >> >>> Especially the correlation between the diverse USB/NET kernel-drivers > >> >>> and how the networking is setup. > >> >> > >> > > >> > [ Sitting in front of a foreign Windows machine ] > >> > > >> > [ CC Aleksander ] > >> > > >> > Hi Dan, > >> > > >> > sorry for the late (and short) response. > >> > > >> > AFAICS you have given a "skeleton" for a "usb-wwan-networking" > >> > documentation :-). > >> > > >> > Personally, I would like to take into account some kernel-config > >> > options and some more things. > >> > > >> > >> I started with documenting... > >> > >> I have still some difficulties in understanding USB WWAN Networking. > >> So, this is what I revealed... > >> > >> ##### USB: HUAWEI E173 3G/UMTS/HSPA INTERNET STICK > >> > >> ### USB-NETWORKING AND WWAN SETUP > >> CONFIG_USB_USBNET=m <--- usb networking > >> CONFIG_USB_NET_CDCETHER=m <--- usb-wwan (net) configuration > >> CONFIG_USB_SERIAL_WWAN=m <--- usb-wwan (serial) configuration > >> CONFIG_USB_SERIAL_OPTION=m <--- usb-serial driver called "option" > > > > Most WWAN devices actually require option, because most WWAN devices > > have "serial" ports (even if they aren't used for PPP), and 'option' is > > the driver that handles this. The 'option' name is historic, but the > > driver should really be called something like 'wwan-serial-generic' or > > something like that. > > > > Is there sth. against renaming the "option" driver to "wwan-serial-generic"? Yes, people's scripts might break that are hard-coded to use the "option" driver. thanks, greg "here, have a vowel, they are cheap" k-h