Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933452Ab1CXAB0 (ORCPT ); Wed, 23 Mar 2011 20:01:26 -0400 Received: from exchange.solarflare.com ([216.237.3.220]:9366 "EHLO exchange.solarflare.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933023Ab1CXABY convert rfc822-to-8bit (ORCPT ); Wed, 23 Mar 2011 20:01:24 -0400 Subject: Re: [RFC] usbnet: use eth%d name for known ethernet devices From: Ben Hutchings To: Steve Calfee Cc: Michal Nazarewicz , Randy Dunlap , Arnd Bergmann , broonie@opensource.wolfsonmicro.com, lkml , Nicolas Pitre , Greg KH , David Brownell , Alan Cox , grant.likely@secretlab.ca, Linux USB list , andy.green@linaro.org, netdev@vger.kernel.org, Benjamin Herrenschmidt , roger.quadros@nokia.com, Jaswinder Singh In-Reply-To: <4D8A8471.9060904@gmail.com> References: <4D79F068.2080009@linaro.org> <201103232035.18232.arnd@arndb.de> <201103232057.18150.arnd@arndb.de> <20110323125958.76285c0f.rdunlap@xenotime.net> <8762r9l94h.fsf@erwin.mina86.com> <4D8A8471.9060904@gmail.com> Content-Type: text/plain; charset="UTF-8" Organization: Solarflare Communications Date: Thu, 24 Mar 2011 00:01:18 +0000 Message-ID: <1300924878.2638.38.camel@bwh-desktop> Mime-Version: 1.0 X-Mailer: Evolution 2.32.1 (2.32.1-1.fc14) Content-Transfer-Encoding: 8BIT X-OriginalArrivalTime: 24 Mar 2011 00:01:23.0717 (UTC) FILETIME=[9CFA7350:01CBE9B6] X-TM-AS-Product-Ver: SMEX-8.0.0.1181-6.500.1024-18028.005 X-TM-AS-Result: No--19.308100-0.000000-31 X-TM-AS-User-Approved-Sender: Yes X-TM-AS-User-Blocked-Sender: No Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2395 Lines: 61 On Wed, 2011-03-23 at 16:38 -0700, Steve Calfee wrote: > On 03/23/11 16:17, Michal Nazarewicz wrote: > >>>>>>> @@ -97,6 +97,8 @@ struct driver_info { > >>>>>>> > >>>>>>> #define FLAG_LINK_INTR 0x0800 /* updates link (carrier) status */ > >>>>>>> > >>>>>>> +#define FLAG_PTP 0x1000 /* maybe use "usb%d" names */ > > > >>>>> On Wednesday 23 March 2011 19:46:50 Greg KH wrote: > >>>>>> "PTP"? What does that stand for? > > > >>>> On Mar 23, 2011 8:36 PM, "Arnd Bergmann" wrote: > >>>>> point-to-point, I'll improve the comment to spell it out when > >>>>> I send the fixed version. > > > >>> On Wednesday 23 March 2011 20:53:13 Michał Nazarewicz wrote: > >>>> I think P2P could be better. > > > >> On Wed, 23 Mar 2011 20:57:18 +0100 Arnd Bergmann wrote: > >>> Yes, good idea. > > > > Randy Dunlap writes: > >> that's peer-to-peer. > >> > >> OTOH, I knew that PTP was point-to-point. > > > > It can be any of that, depending on context. For me PTP is more like > > Picture Transport Protocol, whereas "2" between two letters is usually > > "to". > > > Well, my 2 cents, picture transport protocol is so obviously different > than flags for network interfaces it does not cause a mental collision. PTP is also Precision Time Protocol, which *is* used on network interfaces (maybe not USB-connected interfaces though). Anyway, these USB cable interfaces can presumably be bridged to standard Ethernet, so they are really no more point-to-point than any other Ethernet link has been since the demise of the hub. > However P2P is about to become a huge wifi issue, which definitely is in > the network space. So don't confuse things in the near future, don't use > P2P. > > Maybe a completely different, not so overused flag name would be better. How about FLAG_NON_IEEE, meaning that the physical layer is not based on an IEEE 802.3, 802.11 or other standard physical layer. Ben. -- Ben Hutchings, Senior Software Engineer, Solarflare Not speaking for my employer; that's the marketing department's job. They asked us to note that Solarflare product names are trademarked. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/