From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx1.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by dpdk.org (Postfix) with ESMTP id 8241B4CBD for ; Thu, 1 Mar 2018 03:52:27 +0100 (CET) Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 955BA4075166; Thu, 1 Mar 2018 02:52:26 +0000 (UTC) Received: from [10.72.12.137] (ovpn-12-137.pek2.redhat.com [10.72.12.137]) by smtp.corp.redhat.com (Postfix) with ESMTPS id D7B3810AF9E8; Thu, 1 Mar 2018 02:52:23 +0000 (UTC) To: Qi Zhang , dev@dpdk.org Cc: magnus.karlsson@intei.com, bjorn.topel@intel.com References: <20180227093306.23854-1-qi.z.zhang@intel.com> From: Jason Wang Message-ID: <4758d934-c338-e4a6-17fa-6ed90bb141ff@redhat.com> Date: Thu, 1 Mar 2018 10:52:19 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 MIME-Version: 1.0 In-Reply-To: <20180227093306.23854-1-qi.z.zhang@intel.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Thu, 01 Mar 2018 02:52:26 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Thu, 01 Mar 2018 02:52:26 +0000 (UTC) for IP:'10.11.54.3' DOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'jasowang@redhat.com' RCPT:'' Subject: Re: [dpdk-dev] [RFC 0/7] PMD driver for AF_XDP X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 01 Mar 2018 02:52:27 -0000 On 2018年02月27日 17:32, Qi Zhang wrote: > The RFC patches add a new PMD driver for AF_XDP which is a proposed > faster version of AF_PACKET interface in Linux, see below link for > detail AF_XDP introduction: > https://fosdem.org/2018/schedule/event/af_xdp/ > https://lwn.net/Articles/745934/ > > This patchset is base on v18.02. > It also require a linux kernel that have below AF_XDP RFC patches be > applied. > https://patchwork.ozlabs.org/patch/867961/ > https://patchwork.ozlabs.org/patch/867960/ > https://patchwork.ozlabs.org/patch/867938/ > https://patchwork.ozlabs.org/patch/867939/ > https://patchwork.ozlabs.org/patch/867940/ > https://patchwork.ozlabs.org/patch/867941/ > https://patchwork.ozlabs.org/patch/867942/ > https://patchwork.ozlabs.org/patch/867943/ > https://patchwork.ozlabs.org/patch/867944/ > https://patchwork.ozlabs.org/patch/867945/ > https://patchwork.ozlabs.org/patch/867946/ > https://patchwork.ozlabs.org/patch/867947/ > https://patchwork.ozlabs.org/patch/867948/ > https://patchwork.ozlabs.org/patch/867949/ > https://patchwork.ozlabs.org/patch/867950/ > https://patchwork.ozlabs.org/patch/867951/ > https://patchwork.ozlabs.org/patch/867952/ > https://patchwork.ozlabs.org/patch/867953/ > https://patchwork.ozlabs.org/patch/867954/ > https://patchwork.ozlabs.org/patch/867955/ > https://patchwork.ozlabs.org/patch/867956/ > https://patchwork.ozlabs.org/patch/867957/ > https://patchwork.ozlabs.org/patch/867958/ > https://patchwork.ozlabs.org/patch/867959/ > > There is no clean upstream target yet since kernel patch is still in > RFC stage, The purpose of the patchset is just for anyone that want to > eveluate af_xdp with DPDK application and get feedback for further > improvement. > > To try with the new PMD > 1. compile and install the kernel with above patches applied. > 2. configure $LINUX_HEADER_DIR (dir of "make headers_install") > and $TOOLS_DIR (dir at /tools) at driver/net/af_xdp/Makefile > before compile DPDK. > 3. make sure libelf and libbpf is installed. > > BTW, performance test shows our PMD can reach 94%~98% of the orignal benchmark > when share memory is enabled. Hi: Looks like zerocopy is not used in this series. Any plan to support that? If not, what's the advantage compared to vhost-net + tap + XDP_REDIRECT? Have you measured l2fwd performance in this case? I believe the number you refer here is rxdrop (XDP_DRV) which is 11.6Mpps. Thanks