From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pavel Machek Subject: Re: [PATCH] /proc/scsi/map Date: Wed, 3 Jul 2002 02:59:23 +0200 Sender: linux-scsi-owner@vger.kernel.org Message-ID: References: <3D18AD30.7040904@pacbell.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <3D18AD30.7040904@pacbell.net> List-Id: linux-scsi@vger.kernel.org To: David Brownell Cc: Patrick Mochel , Nick Bellinger , linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org Hi! > >>Why shouldn't there be a $DRIVERFS/net/ipv4@10.42.135.99/... style > >>hookup for iSCSI devices? Using whatever physical addressing the > >>kernel uses there, which I assume wouldn't necessarily be restricted > >>to ipv4. (And not exposing physical network topology -- routing! -- > >>in driverfs.) > > > > > >You can very well use driverfs to expose those attributes, and is one of > >the things that we've been discussing at the kernel summit. driverfs will > >take over the world. But, I still think the device is best represented as > >a child of the phsysical network device. > > Which one? I'd certainly hope that drivers wouldn't have to choose which > of the various network interfaces to register under, or register under > every network interface concurrently. (Or only the ones they might > conceivably be routed to go out on...) Given a bonded network link (going > out over multiple physical drivers) that'd get hairy. And what about > devices that host several logical interfaces? Or when the interfaces get > moved to some other device? > > That's why I think a "non-physical" tree (not under $DRIVERFS/root) is more > sensible in such cases. Which is not to say it's without additional issues > (like how to establish/maintain driver linkages that are DAGs not single > parent trees) but it wouldn't require drivers to dig as deeply into > >>lower Hmm, are dags enough? I mean, cycles exist in IP based networks, and I don't see a reason why it could not exist with some kind of advanced fibrechannel. Pavel -- (about SSSCA) "I don't say this lightly. However, I really think that the U.S. no longer is classifiable as a democracy, but rather as a plutocracy." --hpa