From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: <lukego@gmail.com> Received: from mail-wg0-f45.google.com (mail-wg0-f45.google.com [74.125.82.45]) by dpdk.org (Postfix) with ESMTP id 815627E7B for <dev@dpdk.org>; Wed, 22 Oct 2014 18:01:52 +0200 (CEST) Received: by mail-wg0-f45.google.com with SMTP id m15so4069047wgh.4 for <dev@dpdk.org>; Wed, 22 Oct 2014 09:10:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=yNsgkhPko7ABvGpMdhDUvfXHg0LHihwShg6Y4x1kFrE=; b=HAOGXJpHWNJ+BR39kI2XfM6fIsgUwpNrFx+QJkRUxqryNQtZPRDGzCQm+0X8S2TEQE kGGaMRxyTCuCYPajstIXipOLJkHN4PUafxN2c5hrYGv4QbITMF0vpKerByAeAfQJVm4l v9b5UZgKAVLBF2xQSlQ3xyG7uI4x68D+H4D8dKmwDecXGKsoEjkmAO54g1BbYwMaCP+W uFWEx+L9Grfose8oeDsshYBR+aYBYQOUo1JUg52Bbufx3K/yLLjyCvhxzC6a6M16ioUg V7XlX9BE2EHMtQo5frsa6qtfWcxGotrSGcpHPueHyx1vSAWFAo/jaoxfnVt9ew3o6Ve5 aQ4Q== MIME-Version: 1.0 X-Received: by 10.194.85.229 with SMTP id k5mr49896916wjz.19.1413994213434; Wed, 22 Oct 2014 09:10:13 -0700 (PDT) Sender: lukego@gmail.com Received: by 10.194.219.233 with HTTP; Wed, 22 Oct 2014 09:10:13 -0700 (PDT) In-Reply-To: <26FA93C7ED1EAA44AB77D62FBE1D27BA54C361DF@IRSMSX102.ger.corp.intel.com> References: <26FA93C7ED1EAA44AB77D62FBE1D27BA54C361DF@IRSMSX102.ger.corp.intel.com> Date: Wed, 22 Oct 2014 18:10:13 +0200 X-Google-Sender-Auth: uPMQWE46eOdjPjdO5Imp_nwrReI Message-ID: <CAA2XHbc4T4BCUA00U4_UwsakkFGSrWvPAzjosJcH3BQHN2Ahbg@mail.gmail.com> From: Luke Gorrie <luke@snabb.co> To: "O'driscoll, Tim" <tim.o'driscoll@intel.com> Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.15 Cc: "dev@dpdk.org" <dev@dpdk.org> Subject: Re: [dpdk-dev] [dpdk-announce] DPDK Features for Q1 2015 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK <dev.dpdk.org> List-Unsubscribe: <http://dpdk.org/ml/options/dev>, <mailto:dev-request@dpdk.org?subject=unsubscribe> List-Archive: <http://dpdk.org/ml/archives/dev/> List-Post: <mailto:dev@dpdk.org> List-Help: <mailto:dev-request@dpdk.org?subject=help> List-Subscribe: <http://dpdk.org/ml/listinfo/dev>, <mailto:dev-request@dpdk.org?subject=subscribe> X-List-Received-Date: Wed, 22 Oct 2014 16:01:52 -0000 Hi Tim, On 22 October 2014 15:48, O'driscoll, Tim <tim.o'driscoll@intel.com> wrote: > 2.0 (Q1 2015) DPDK Features: > Bifurcated Driver: With the Bifurcated Driver, the kernel will retain > direct control of the NIC, and will assign specific queue pairs to DPDK. > Configuration of the NIC is controlled by the kernel via ethtool. > That sounds awesome and potentially really useful for other people writing userspace data planes too. If I understand correctly, this way the messy details can be contained in one place (kernel) and the application (DPDK PMD or otherwise) will access the NIC TX/RX queue via the ABI defined in the hardware data sheet. Single Virtio Driver: Merge existing Virtio drivers into a single > implementation, incorporating the best features from each of the existing > drivers. > Cool. Do you have a strategy in mind already for zero-copy optimisation with VMDq? I have seen some patches floating around for this and it's an area of active interest for myself and others. I see a lot of potential for making this work more effectively with some modest extensions to Virtio and guest behaviour, and would love to meet kindred spirits who are thinking along these lines too.