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=-0.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 9F4E9C2D0DB for ; Sat, 25 Jan 2020 16:24:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 727D020704 for ; Sat, 25 Jan 2020 16:24:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=lunn.ch header.i=@lunn.ch header.b="5giQsy/u" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726612AbgAYQYB (ORCPT ); Sat, 25 Jan 2020 11:24:01 -0500 Received: from vps0.lunn.ch ([185.16.172.187]:54168 "EHLO vps0.lunn.ch" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725710AbgAYQYA (ORCPT ); Sat, 25 Jan 2020 11:24:00 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lunn.ch; s=20171124; h=In-Reply-To:Content-Type:MIME-Version:References:Message-ID: Subject:Cc:To:From:Date:Sender:Reply-To:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=jex0E8D9r9+e+6DUpspkCaHnqqzSIrlNGW9e5du01CQ=; b=5giQsy/uLoYYaRrT93K3SefnaL 2ak6pJiZ13B/nntmKOnGnbQfkxKTSf9olPDjlx05uT//8td9XJDWtGN3XTmauMwXFzJ5z6IsqUADK oqCIIOr6kmP05O/UmYqYXlLRO6NItWLs29ASGQKqrvCpGoaH4trZVee1a+ygw/kfIR2I=; Received: from andrew by vps0.lunn.ch with local (Exim 4.93) (envelope-from ) id 1ivOE1-00076k-75; Sat, 25 Jan 2020 17:23:57 +0100 Date: Sat, 25 Jan 2020 17:23:57 +0100 From: Andrew Lunn To: "Allan W. Nielsen" Cc: Vinicius Costa Gomes , Horatiu Vultur , linux-kernel@vger.kernel.org, netdev@vger.kernel.org, bridge@lists.linux-foundation.org, jiri@resnulli.us, ivecera@redhat.com, davem@davemloft.net, roopa@cumulusnetworks.com, nikolay@cumulusnetworks.com, anirudh.venkataramanan@intel.com, olteanv@gmail.com, jeffrey.t.kirsher@intel.com, UNGLinuxDriver@microchip.com Subject: Re: [RFC net-next v3 00/10] net: bridge: mrp: Add support for Media Redundancy Protocol (MRP) Message-ID: <20200125162357.GE18311@lunn.ch> References: <20200124161828.12206-1-horatiu.vultur@microchip.com> <20200124203406.2ci7w3w6zzj6yibz@lx-anielsen.microsemi.net> <87zhecimza.fsf@linux.intel.com> <20200125094441.kgbw7rdkuleqn23a@lx-anielsen.microsemi.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200125094441.kgbw7rdkuleqn23a@lx-anielsen.microsemi.net> Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org > Lets say that the link between H1 and H2 goes down: > > +------------------------------------------+ > | | > +-->|H1|<--- / --->|H2|<---------->|H3|<--+ > eth0 eth1 eth0 eth1 eth0 eth1 > > H1 will now observe that the test packets it sends on eth1, is not > received in eth0, meaninf that the ring is open Hi Allan Is H1 the only device sending test packets? It is assumed that H2 and H3 will forward them? Or does each device send test packets, and when it stops hearing these packets from a neighbour, it assumes the link is open? Andrew