From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Greear Subject: Re: [MacVLAN] failure to deliver reassembled IPv6 multicast traffic Date: Tue, 19 Feb 2013 14:37:53 -0800 Message-ID: <5123FEC1.7050608@candelatech.com> References: <20130215170028.GG12219@eerihug-hybrid.ki.sw.ericsson.se> <511E8760.9070703@candelatech.com> <1360955900.19353.22.camel@edumazet-glaptop> <511E8C3D.5070603@candelatech.com> <1360956930.19353.24.camel@edumazet-glaptop> <5123FB32.7050101@candelatech.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: Erik Hugne , netdev@vger.kernel.org, kaber@trash.net, ataschner@suse.com To: Eric Dumazet Return-path: Received: from mail.candelatech.com ([208.74.158.172]:41704 "EHLO ns3.lanforge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933223Ab3BSWiD (ORCPT ); Tue, 19 Feb 2013 17:38:03 -0500 In-Reply-To: <5123FB32.7050101@candelatech.com> Sender: netdev-owner@vger.kernel.org List-ID: On 02/19/2013 02:22 PM, Ben Greear wrote: > On 02/15/2013 11:35 AM, Eric Dumazet wrote: >> On Fri, 2013-02-15 at 11:27 -0800, Ben Greear wrote: >> >>> For some reason I was thinking this wasn't fully fixed for IPv4, but >>> maybe it is..the bug in our internal tracker only mentions IPv6 >>> as having issues... >>> >>> We'll do some testing on IPv4 sometime soon to make sure, and can test >>> IPv6 patches as well... >> >> This worries me a bit, as I wrote this patch because you reported the >> issue. > > We just did some testing on this on the 3.7.6+ kernel. IPv4 multicast to > mac-vlans works OK with large packets if there is a single multicast receiver, > but does NOT work if there are multiple multicast receivers (ie, several > mac-vlans with an mcast receive bound to each mvlan). I should clarify this a bit: This kernel has some additional patches...probably nothing that makes this issue worse, but I guess you never know. We have not tested this on standard upstream kernels. Thanks, Ben -- Ben Greear Candela Technologies Inc http://www.candelatech.com