From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8F39DC282C3 for ; Wed, 23 Jan 2019 01:18:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5CD74217D4 for ; Wed, 23 Jan 2019 01:18:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726866AbfAWBSg convert rfc822-to-8bit (ORCPT ); Tue, 22 Jan 2019 20:18:36 -0500 Received: from shards.monkeyblade.net ([23.128.96.9]:38738 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726047AbfAWBSg (ORCPT ); Tue, 22 Jan 2019 20:18:36 -0500 Received: from localhost (unknown [IPv6:2601:601:9f80:35cd::bf5]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) (Authenticated sender: davem-davemloft) by shards.monkeyblade.net (Postfix) with ESMTPSA id 8147F101FC9C1; Tue, 22 Jan 2019 17:18:35 -0800 (PST) Date: Tue, 22 Jan 2019 17:18:32 -0800 (PST) Message-Id: <20190122.171832.1199555290239452595.davem@davemloft.net> To: linus.luessing@c0d3.blue Cc: netdev@vger.kernel.org, roopa@cumulusnetworks.com, nikolay@cumulusnetworks.com, kuznet@ms2.inr.ac.ru, yoshfuji@linux-ipv6.org, bridge@lists.linux-foundation.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH net-next v2 0/4] bridge: implement Multicast Router Discovery (RFC4286) From: David Miller In-Reply-To: <20190121062628.2710-1-linus.luessing@c0d3.blue> References: <20190121062628.2710-1-linus.luessing@c0d3.blue> X-Mailer: Mew version 6.8 on Emacs 26.1 Mime-Version: 1.0 Content-Type: Text/Plain; charset=iso-8859-1 Content-Transfer-Encoding: 8BIT X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Tue, 22 Jan 2019 17:18:35 -0800 (PST) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Linus Lüssing Date: Mon, 21 Jan 2019 07:26:24 +0100 > This patchset adds initial Multicast Router Discovery support to > the Linux bridge (RFC4286). With MRD it is possible to detect multicast > routers and mark bridge ports and forward multicast packets to such routers > accordingly. > > So far, multicast routers are detected via IGMP/MLD queries and PIM > messages in the Linux bridge. As there is only one active, selected > querier at a time RFC4541 ("Considerations for Internet Group Management > Protocol (IGMP) and Multicast Listener Discovery (MLD) Snooping > Switches") section 2.1.1.a) recommends snooping Multicast Router > Advertisements as provided by MRD (RFC4286). > > > The first two patches are refactoring some existing code which is reused > for parsing the Multicast Router Advertisements later in the fourth > patch. The third patch lets the bridge join the all-snoopers multicast > address to be able to reliably receive the Multicast Router > Advertisements. ... Series applied, thanks!