From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnd Bergmann Subject: Re: [PATCH] net/bridge: Add 'hairpin' port forwarding mode Date: Thu, 13 Aug 2009 19:06:21 +0200 Message-ID: <200908131906.21916.arnd@arndb.de> References: <0199E0D51A61344794750DC57738F58E6D6B0C70D9@GVW1118EXC.americas.hpqcorp.net> Mime-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Cc: "linux-kernel@vger.kernel.org" , "netdev@vger.kernel.org" , Stephen Hemminger , "Paul Congdon (UC Davis)" , "evb@yahoogroups.com" , "bridge@lists.linux-foundation.org" , "davem@davemloft.net" , "virtualization@lists.linux-foundation.org" , "kaber@trash.net" , "Dickson, Mike (ISS Software)" , "adobriyan@gmail.com" , "bridge@osdl.org" To: "Fischer, Anna" Return-path: Received: from moutng.kundenserver.de ([212.227.126.177]:52231 "EHLO moutng.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752291AbZHMRHh (ORCPT ); Thu, 13 Aug 2009 13:07:37 -0400 In-Reply-To: <0199E0D51A61344794750DC57738F58E6D6B0C70D9@GVW1118EXC.americas.hpqcorp.net> Sender: netdev-owner@vger.kernel.org List-ID: On Thursday 13 August 2009, Fischer, Anna wrote: > This patch adds a 'hairpin' (also called 'reflective relay') mode > port configuration to the Linux Ethernet bridge kernel module. > A bridge supporting hairpin forwarding mode can send frames back > out through the port the frame was received on. > > Hairpin mode is required to support basic VEPA (Virtual > Ethernet Port Aggregator) capabilities. > > You can find additional information on VEPA here: > http://tech.groups.yahoo.com/group/evb/ > http://www.ieee802.org/1/files/public/docs2009/new-hudson-vepa_seminar-20090514d.pdf > http://www.internet2.edu/presentations/jt2009jul/20090719-congdon.pdf > > An additional patch 'bridge-utils: Add 'hairpin' port forwarding mode' > is provided to allow configuring hairpin mode from userspace tools. > > Signed-off-by: Paul Congdon > Signed-off-by: Anna Fischer Acked-by: Arnd Bergmann