From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by dpdk.org (Postfix) with ESMTP id B604E5323 for ; Fri, 6 Jun 2014 22:10:28 +0200 (CEST) Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga102.fm.intel.com with ESMTP; 06 Jun 2014 13:10:41 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.98,991,1392192000"; d="scan'208";a="551142698" Received: from irsmsx101.ger.corp.intel.com ([163.33.3.153]) by fmsmga002.fm.intel.com with ESMTP; 06 Jun 2014 13:04:55 -0700 Received: from irsmsx103.ger.corp.intel.com ([169.254.3.58]) by IRSMSX101.ger.corp.intel.com ([169.254.1.245]) with mapi id 14.03.0123.003; Fri, 6 Jun 2014 21:04:55 +0100 From: "Richardson, Bruce" To: "John W. Linville" , Chris Wright Thread-Topic: [dpdk-dev] [RFC] librte_pmd_packet: add PMD for AF_PACKET-based virtual devices Thread-Index: AQHPgcA+RIHP5aD8V0+3epKQTVDXfptkbrgAgAASjGA= Date: Fri, 6 Jun 2014 20:04:54 +0000 Message-ID: <59AF69C657FD0841A61C55336867B5B01AA33300@IRSMSX103.ger.corp.intel.com> References: <1402082754-12921-1-git-send-email-linville@tuxdriver.com> <20140606194748.GT16092@x220.localdomain> <20140606195706.GB13595@tuxdriver.com> In-Reply-To: <20140606195706.GB13595@tuxdriver.com> Accept-Language: en-GB, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [163.33.239.182] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Cc: "dev@dpdk.org" Subject: Re: [dpdk-dev] [RFC] librte_pmd_packet: add PMD for AF_PACKET-based virtual devices X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 06 Jun 2014 20:10:29 -0000 > -----Original Message----- > From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of John W. Linville > Sent: Friday, June 06, 2014 12:57 PM > To: Chris Wright > Cc: dev@dpdk.org > Subject: Re: [dpdk-dev] [RFC] librte_pmd_packet: add PMD for AF_PACKET- > based virtual devices >=20 > On Fri, Jun 06, 2014 at 12:47:48PM -0700, Chris Wright wrote: > > * John W. Linville (linville@tuxdriver.com) wrote: > > > This is a Linux-specific virtual PMD driver backed by an AF_PACKET > > > socket. The current implementation uses mmap'ed ring buffers to > > > limit copying and user/kernel transitions. The intent is also to tak= e > > > advantage of fanout and any future AF_PACKET optimizations as well. > > > > > > This is intended to provide a means for using DPDK on a broad range > > > of hardware without hardware-specifi PMDs and hopefully with better > > > performance than what PCAP offers in Linux. This might be useful > > > as a development platform for DPDK applications when DPDK-supported > > > hardware is expensive or unavailable. > > > > Nice, have you compared yet w/ PCAP numbers? Agreed. Nice to have generic PMD options for those NICs that don't have spe= cially optimized PMDs. >=20 > No, sorry -- definitely needs more testing, including performance numbers= ... >=20 Looking forward to seeing those when you have them. :-)