From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758411AbXINUj5 (ORCPT ); Fri, 14 Sep 2007 16:39:57 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753228AbXINUjs (ORCPT ); Fri, 14 Sep 2007 16:39:48 -0400 Received: from e6.ny.us.ibm.com ([32.97.182.146]:53713 "EHLO e6.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752717AbXINUjr (ORCPT ); Fri, 14 Sep 2007 16:39:47 -0400 To: Dan Williams cc: Jeff Garzik , Andrew Morton , Linus Torvalds , netdev@vger.kernel.org, LKML Subject: Re: [git patches] net driver fixes In-reply-to: <1189800717.20386.13.camel@xo-3E-67-34.localdomain> References: <20070913053022.GA16891@havoc.gtf.org> <1189793598.2508.4.camel@xo-3E-67-34.localdomain> <46EAD049.4020107@garzik.org> <1189794677.2508.19.camel@xo-3E-67-34.localdomain> <32620.1189797572@death> <1189800717.20386.13.camel@xo-3E-67-34.localdomain> Comments: In-reply-to Dan Williams message dated "Fri, 14 Sep 2007 16:11:57 -0400." X-Mailer: MH-E 8.0.3; nmh 1.1-RC4; GNU Emacs 22.0.95 Date: Fri, 14 Sep 2007 13:39:44 -0700 Message-ID: <31488.1189802384@death> From: Jay Vosburgh Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Dan Williams wrote: [...] >So essentially the ehea device has a 1(+) external ports that may/may >not be connected, but all lpars share the physical hardware itself, >which is quite happy to let all the lpars talk to each other essentially >via loopback even if there is no actual carrier detected on the external >port(s)? [...] Yes. >[...] How does addressing work here, is it just L2 addresses? Yes. The logical ports all have unique MAC addresses. > [...] Feel >free to point me to some docs and tell me to shut up :) http://www.redbooks.ibm.com/redpieces/abstracts/redp4340.html I found this via google; I haven't read it in detail, but it seems to cover the HEA architecture at a high level. It talks about the whole "IVE" (integrated virtual ethernet: the adapter, hypervisor, etc) system, but HEA is part of that, so it's probably got the answers you're looking for. -J --- -Jay Vosburgh, IBM Linux Technology Center, fubar@us.ibm.com