Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754560AbaBMLf0 (ORCPT ); Thu, 13 Feb 2014 06:35:26 -0500 Received: from smtp.citrix.com ([66.165.176.89]:11833 "EHLO SMTP.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753114AbaBMLfY (ORCPT ); Thu, 13 Feb 2014 06:35:24 -0500 X-IronPort-AV: E=Sophos;i="4.95,838,1384300800"; d="scan'208";a="102194539" Message-ID: <1392291321.27366.17.camel@kazak.uk.xensource.com> Subject: Re: [RFC 2/2] xen-netback: disable multicast and use a random hw MAC address From: Ian Campbell To: "Luis R. Rodriguez" CC: "netdev@vger.kernel.org" , , Paul Durrant , "Wei Liu" , , "linux-kernel@vger.kernel.org" Date: Thu, 13 Feb 2014 11:35:21 +0000 In-Reply-To: References: <1392071391-13215-1-git-send-email-mcgrof@do-not-panic.com> <1392071391-13215-3-git-send-email-mcgrof@do-not-panic.com> <1392108205.22033.16.camel@dagon.hellion.org.uk> <1392203708.13563.50.camel@kazak.uk.xensource.com> Organization: Citrix Systems, Inc. Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.4.4-3 MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Originating-IP: [10.80.2.80] X-DLP: MIA2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2014-02-12 at 14:05 -0800, Luis R. Rodriguez wrote: > > I meant the PV protocol extension which allows guests (netfront) to > > register to receive multicast frames across the PV ring -- i.e. for > > multicast to work from the guests PoV. > > Not quite sure I understand, ipv6 works on guests so multicast works, > so its unclear what you mean by multicast frames across the PV ring. > Is there any code or or documents I can look at ? xen/include/public/io/netif.h talks about 'feature-multicast-control' and XEN_NETIF_EXTRA_TYPE_MCAST_{ADD,DEL}. Looking at it now in the absence of those then flooding is the default... > > (maybe that was just an optimisation though and the default is to flood > > everything, it was a long time ago) > > From a networking perspective everything is being flooded as I've seen > it so far. ... which is why it works ;-) Ian. -- 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/