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=-4.2 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,NICE_REPLY_A,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 02B3FC2BBCD for ; Fri, 18 Dec 2020 01:31:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D28102395A for ; Fri, 18 Dec 2020 01:31:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731878AbgLRBbQ (ORCPT ); Thu, 17 Dec 2020 20:31:16 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53756 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725930AbgLRBbP (ORCPT ); Thu, 17 Dec 2020 20:31:15 -0500 Received: from mail-oi1-x22c.google.com (mail-oi1-x22c.google.com [IPv6:2607:f8b0:4864:20::22c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 92B8EC061282; Thu, 17 Dec 2020 17:30:35 -0800 (PST) Received: by mail-oi1-x22c.google.com with SMTP id l200so1145299oig.9; Thu, 17 Dec 2020 17:30:35 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=P3OTeu7kWnFvQqcA3deigdxkkwkznGURwG/tb4r401Y=; b=Q+99nG0nv35q9MrE9XBnSCKG9HlWfJDKkO3dlssQE/O9k8weODhO/sATNVFBEneToi KKM8txYXChXrW6ixidU6JtqDEvZSibEHd7+b8mGRUlG7JnXlhvZ278L8opZAticJ2FPF UzIUWN/iqDFe7n3+ZkvcABvbMYIIbhbgJJGGvDZi6UPIBK2U72nkSCJlqf/+wKFBVAfU ftzekCBk6ecB2s4Pu9wnho7Vqtl/tuPupCG29AblctXxRWE8E/PGi6XYtZitGMLp9iva zzfdZy1AiAzD5ZPWfRVyy+CgxFLk4ra5K23SGT/HTaZbrcSZqbz2gfQgD25VWnm4w5Rf f1wg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=P3OTeu7kWnFvQqcA3deigdxkkwkznGURwG/tb4r401Y=; b=NwHf8EY+8LemwbVsC4vm2XT0BIhP8v+yj57y7Wo1yobXantxC/bvuMy3LOFowykDJa KQP+PWHfjGiP8XO6AwB6PZ19i89wqEdHhOZpLZbmM+uccjqeR0+HSK5m4UmOG59qCUpd MsyLYB7pKOFcgTdMc0Fj9fkY9dXqM3BkBEN1jlooRawTME1fET/ZqIvntGysFIJCxdRT 0IdS07656haPXqZdhvMxjuzcszAmp/kJcupiyTjV0wJdDLnSsYbQ59D9uIAeeHPDWmAj qe7vRbqrtH5hHXWY9ZsAb+GTYgpC5i5UMvUJPORi2nQxuc6K52mpMNCnQBolQK9cJcsH 5Hvg== X-Gm-Message-State: AOAM530C81HSj5aHqprER3ZK7tA9mzTS3TFSB6zCDMJlDiodQe2Kk3kb ohY+x6sXtL2FAvdtYBtkWG4= X-Google-Smtp-Source: ABdhPJyNh0NjW3II/BpiruwzC0EAVxEhG2D1LeEP4uxUmk91oXbYi8d4fmgthaFQovzyHVDvgIr4hg== X-Received: by 2002:aca:c6d7:: with SMTP id w206mr1310540oif.76.1608255035083; Thu, 17 Dec 2020 17:30:35 -0800 (PST) Received: from Davids-MacBook-Pro.local ([8.48.134.51]) by smtp.googlemail.com with ESMTPSA id x20sm1621479oov.33.2020.12.17.17.30.32 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 17 Dec 2020 17:30:34 -0800 (PST) Subject: Re: [net-next v4 00/15] Add mlx5 subfunction support To: Alexander Duyck , Jason Gunthorpe Cc: Saeed Mahameed , "David S. Miller" , Jakub Kicinski , Leon Romanovsky , Netdev , linux-rdma@vger.kernel.org, David Ahern , Jacob Keller , Sridhar Samudrala , "Ertman, David M" , Dan Williams , Kiran Patil , Greg KH References: <20201216001946.GF552508@nvidia.com> <20201216030351.GH552508@nvidia.com> <20201216133309.GI552508@nvidia.com> <20201216175112.GJ552508@nvidia.com> <20201216203537.GM552508@nvidia.com> From: David Ahern Message-ID: Date: Thu, 17 Dec 2020 18:30:31 -0700 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.16; rv:78.0) Gecko/20100101 Thunderbird/78.5.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org On 12/16/20 3:53 PM, Alexander Duyck wrote: > The problem in my case was based on a past experience where east-west > traffic became a problem and it was easily shown that bypassing the > NIC for traffic was significantly faster. If a deployment expects a lot of east-west traffic *within a host* why is it using hardware based isolation like a VF. That is a side effect of a design choice that is remedied by other options.