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=-2.6 required=3.0 tests=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_SANE_1 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 3CEB1C48BDB for ; Sun, 7 Jul 2019 13:24:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 10D19206A3 for ; Sun, 7 Jul 2019 13:24:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="fiGr+k7B" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727296AbfGGNYo (ORCPT ); Sun, 7 Jul 2019 09:24:44 -0400 Received: from mail-io1-f41.google.com ([209.85.166.41]:34073 "EHLO mail-io1-f41.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726601AbfGGNYn (ORCPT ); Sun, 7 Jul 2019 09:24:43 -0400 Received: by mail-io1-f41.google.com with SMTP id k8so28986216iot.1 for ; Sun, 07 Jul 2019 06:24:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-language:content-transfer-encoding; bh=RcHjvvcuen0s7n/2WrigMBm1Z2WTmVLfih6CssNk8Zw=; b=fiGr+k7BYqSUqtSGLtjgPGmNCejQxbt9iUe5URMvsQi6W9BKFs3hqlUjfOItBwHhsO QBAiLBppwD4X7Ro4oBcKWFYp2MM7NwQcR30+f0FP51QDFiX/t3v38DryymJwbWBj8VRb 1k//2mPlERDdEkpNw7O1vH43II/zuSmwNstNF+FSY08iNrAYIJotEBOwxdLAGLOczrpK 2np9GFvvREoS6CDNz5n4UE84c6AhnrPET6JgjaXdTHP3XpSfPkIC7RQ4OHcTs5/a2qxC Y/IzNiGuSuL9HcgGdSRHnnxeO05ZxLuwd5WE6QM+EIERWhKQO6RKGa8GRQozhr+BPjjB 1dHw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=RcHjvvcuen0s7n/2WrigMBm1Z2WTmVLfih6CssNk8Zw=; b=rInykjD0ZRfIIobJ2m0KrkNodBKcZDZWjYBejLyEyzyBKMwCVa5zq8MEjTaibk0cYc eqT1jGJ6W0dmtG15xn0nO+AGEPQPikCyS9TURrm+WvrIgoGC4/oBkCxd01wdQNfCdM2D Mfa7WCnF1/mfLVK90+zWyLHt48Uy96F70uucOX7k3BmbsNjmeQT025JjBpChuk6aQYgG 3GbbkoKeNiEKLtfa62lVbfS+uEqYqP0qO2V+8eqjCmfJYiqy51R5osNU5W/qCdrdXXZY AdAhbXGXI4m567LCzKNaGSaBxXpV9/M56Uth7+XiVCKxUQx2RlQmlyN4i0tYmlcfsjp4 dJTQ== X-Gm-Message-State: APjAAAUzhBuPu8Qdsxib4C37izLAQlAMvw89A/k7XYtPOZnkf5WEX+0C a07CMRQZudKocqN/MzFPIHcpgGMb X-Google-Smtp-Source: APXvYqyD5RQapN2lI+CJXUx7Hwtg5YP0VovNMqeSq4YEHYcfzS/+Y1EaKtKpxFbkZDTa79V6qrP9tw== X-Received: by 2002:a5e:8618:: with SMTP id z24mr14236604ioj.174.1562505882659; Sun, 07 Jul 2019 06:24:42 -0700 (PDT) Received: from ?IPv6:2601:282:800:fd80:429:7ee4:c4cb:8fc5? ([2601:282:800:fd80:429:7ee4:c4cb:8fc5]) by smtp.googlemail.com with ESMTPSA id c17sm11514834ioo.82.2019.07.07.06.24.40 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 07 Jul 2019 06:24:41 -0700 (PDT) Subject: Re: More complex PBR rules To: Markus Moeller , netdev@vger.kernel.org References: From: David Ahern Message-ID: <3fe925c0-e26f-492d-2552-b13a14451e3e@gmail.com> Date: Sun, 7 Jul 2019 07:24:40 -0600 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On 7/6/19 5:06 PM, Markus Moeller wrote: > Hi Network developers > > I am new to this group and wonder if you can advise how I could > implement more complex PBR rules to achieve for example load balancing. > The requirement I have is to route based on e.g. a hash like: > >  hash(src-ip+dst-ip) mod N  routes via  gwX    0 over N gateways ) Have you tried multipath routing? Does that not work for you? > >  This would help in situations where I can not use a MAC for identifying > a gateway  ( e.g. in cloud environments) . > >   Could someone point me to the kernel source code where PBR is performed ? > net/core/fib_rules.c