From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by dpdk.org (Postfix) with ESMTP id A43399A8C; Fri, 13 Mar 2015 15:51:53 +0100 (CET) Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga101.jf.intel.com with ESMTP; 13 Mar 2015 07:51:52 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.11,395,1422950400"; d="scan'208";a="679699618" Received: from bricha3-mobl3.ger.corp.intel.com ([10.243.20.28]) by fmsmga001.fm.intel.com with SMTP; 13 Mar 2015 07:51:50 -0700 Received: by (sSMTP sendmail emulation); Fri, 13 Mar 2015 14:51:50 +0025 Date: Fri, 13 Mar 2015 14:51:50 +0000 From: Bruce Richardson To: kuldeep.samasi@wipro.com Message-ID: <20150313145149.GB11352@bricha3-MOBL3> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Organization: Intel Shannon Ltd. User-Agent: Mutt/1.5.23 (2014-03-12) Cc: dev@dpdk.org, dev-bounces@dpdk.org Subject: Re: [dpdk-dev] PMD architecture related to code 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, 13 Mar 2015 14:51:54 -0000 On Fri, Mar 13, 2015 at 04:45:47AM +0000, kuldeep.samasi@wipro.com wrote: > Hi Developer Team , > > > I am trying add new functionality on Poll Mode driver . > But I don't have idea how packets are coming to kernel mode and going to user space and doing packet processing DPDK . The packets never go into the kernel when DPDK is in use. Instead the DPDK PMD configures the NIC to DMA the packets directly into userspace buffers. Hence the high performance. /Bruce > > I need suggestion on which file the PMD architecture defined . > > > > Regards , > Kuldeep > The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately and destroy all copies of this message and any attachments. WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. www.wipro.com