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=-5.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT 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 C49E6C43460 for ; Mon, 12 Apr 2021 15:00:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A831361354 for ; Mon, 12 Apr 2021 15:00:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242621AbhDLPBN (ORCPT ); Mon, 12 Apr 2021 11:01:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33634 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241302AbhDLPBM (ORCPT ); Mon, 12 Apr 2021 11:01:12 -0400 Received: from mail-pl1-x634.google.com (mail-pl1-x634.google.com [IPv6:2607:f8b0:4864:20::634]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BBEDEC061574; Mon, 12 Apr 2021 08:00:54 -0700 (PDT) Received: by mail-pl1-x634.google.com with SMTP id t22so6184378ply.1; Mon, 12 Apr 2021 08:00:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-disposition:content-transfer-encoding; bh=0hXhggls3SsdmeEdICPiR/mw1VhFjhbR9Aip2rqIyO4=; b=Lt7Kkeff+wv/0Sl+wVWKVeQuDdCJsddS3WDO/HsC7ExIVOTCGMqJ53FXjfq4eVyIym pJKnIVc+O4MisoROlRvAQc9NAQzobVbiuCLk8GHwE0ttLYCB9ML5VAUxiWar0OEdMzSU Uug2+3qMemrFi7/VGW3QUlvsRZoHX9avflweqAQH5yvxQOujn6/iGvKT4SijR7zil+rl x6/AnREpIPbZ1Tq4MrunHSc+prLscYWUtde56wIbn1BgTik89FOU279kyA7PoX9eb6bz JbcxqyrzcN/t8Y3V33W6VdpUYoBuSQOFi/EhMzNq5Lj15Ikg9oM4Hkx/+4hOH7byY3Lq 5asw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-disposition :content-transfer-encoding; bh=0hXhggls3SsdmeEdICPiR/mw1VhFjhbR9Aip2rqIyO4=; b=EzrIIZYgmw6VOSLHt4dpTqb8cP6VvFac+SLAbw/x+Gz8Yo1mXUdJ5UYhQoktxTodp8 Nd0qnBUbU2OG35d8cruxFG1xnWKqNkemx7m6gknNxzmlpY54Ym/KygvlWwMEWWem+Rr7 8Y7+x1wi5on/QfqGQTUeZyCVQvHp7UnROlgSPIvGRo8mJCaLM+wADIOWjYO7GiWWzWlR y9ixGtvgYNHYWA8B7iPf/qZgfTuNw8O1pEIHVP5ZrLSvoQGJLb7Wg50KRGiUJXWs7Yr0 KvFAH81x6GevRA9JAGj/ZDBguImMwGnL503BLGiqIqUIgFmotUFD9zLIcd5IWK5Yh4PZ yNKA== X-Gm-Message-State: AOAM532Di8n9Jk0cZz1PfA0xhjXun8Ud+Uo7gQThxdbYejOnbaguwe0I bUMXSlDKGI0SYDV+HdmTPxdKoyY/Sr+9WTlU X-Google-Smtp-Source: ABdhPJyN89fUbcwYmwo8tfuHo+uILoVx2ouA4h+2bcTXZPQh0cGMV43Wr4ZOUK3zn/geNKDM7piASA== X-Received: by 2002:a17:90b:3892:: with SMTP id mu18mr27963088pjb.7.1618239654319; Mon, 12 Apr 2021 08:00:54 -0700 (PDT) Received: from localhost.localdomain ([138.197.212.246]) by smtp.gmail.com with ESMTPSA id y19sm12255982pge.50.2021.04.12.08.00.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 12 Apr 2021 08:00:53 -0700 (PDT) From: DENG Qingfang To: Vladimir Oltean Cc: Marek Behun , Ansuel Smith , netdev@vger.kernel.org, "David S. Miller" , Jakub Kicinski , Andrew Lunn , Vivien Didelot , Florian Fainelli , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Eric Dumazet , Wei Wang , Cong Wang , Taehee Yoo , =?iso-8859-1?Q?Bj=F6rn_T=F6pel?= , zhang kai , Weilong Chen , Roopa Prabhu , Di Zhu , Francis Laniel , linux-kernel@vger.kernel.org Subject: Re: [PATCH RFC net-next 0/3] Multi-CPU DSA support Date: Mon, 12 Apr 2021 23:00:45 +0800 Message-Id: <20210412150045.929508-1-dqfext@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210411185017.3xf7kxzzq2vefpwu@skbuf> References: <20210410133454.4768-1-ansuelsmth@gmail.com> <20210411200135.35fb5985@thinkpad> <20210411185017.3xf7kxzzq2vefpwu@skbuf> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Sun, Apr 11, 2021 at 09:50:17PM +0300, Vladimir Oltean wrote: > > So I'd be tempted to say 'tough luck' if all your ports are not up, and > the ones that are are assigned statically to the same CPU port. It's a > compromise between flexibility and simplicity, and I would go for > simplicity here. That's the most you can achieve with static assignment, > just put the CPU ports in a LAG if you want better dynamic load balancing > (for details read on below). > Many switches such as mv88e6xxx only support MAC DA/SA load balancing, which make it not ideal in router application (Router WAN <--> ISP BRAS traffic will always have the same DA/SA and thus use only one port).