From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mgw.gov.kz (mgw.gov.kz [89.218.88.242]) by dpdk.org (Postfix) with ESMTP id B251CAD86 for ; Wed, 15 Jun 2016 14:14:36 +0200 (CEST) Received: from sts.kz (mail.sts.kz [178.89.4.9]) by mgw.gov.kz with ESMTP id u5FCEZoS004137-u5FCEZoU004137 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Wed, 15 Jun 2016 18:14:35 +0600 Received: from [172.20.19.232] (unknown [178.89.4.11]) by sts.kz (Postfix) with ESMTPA id AAF49652A; Wed, 15 Jun 2016 18:14:34 +0600 (ALMT) DKIM-Filter: OpenDKIM Filter v2.10.3 sts.kz AAF49652A DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sts.kz; s=mail; t=1465992875; bh=HKPV4mPqenyOPrDQ0cAGho8gyJVhOuvB5zpda4WmPao=; h=Subject:To:References:From:Date:In-Reply-To:From; b=EOc0np2am7+T2fiP6kfitcDj2H098b4KQpVFwEFTxH+sxk6BVmafw4AkTgbL++hI4 qpRsl5M2tzX7SD9hpNIH+o+Kaly7UgG+CS7KjslwmjtS3g7prQ11/u/SS1peyTdmwb ZhROQ7uQWBWNrmjdZNgXRWU34BwnVuKWdHEV6WZw= To: Panu Matilainen , "Dumitrescu, Cristian" , "dev@dpdk.org" References: <5761235C.2090906@sts.kz> <3EB4FA525960D640B5BDFFD6A3D8912647A063F9@IRSMSX108.ger.corp.intel.com> <576137B6.2000103@sts.kz> From: Yerden Zhumabekov Message-ID: <576146AA.2030108@sts.kz> Date: Wed, 15 Jun 2016 18:14:34 +0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [dpdk-dev] random pkt generator PMD 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: Wed, 15 Jun 2016 12:14:36 -0000 On 15.06.2016 17:25, Panu Matilainen wrote: > On 06/15/2016 02:10 PM, Yerden Zhumabekov wrote: >> >> >> On 15.06.2016 16:43, Dumitrescu, Cristian wrote: >>> >>>> >>>> Hello everybody, >>>> >>>> DPDK already got a number of PMDs for various eth devices, it even has >>>> PMD emulations for backends such as pcap, sw rings etc. >>>> >>>> I've been thinking about the idea of having PMD which would generate >>>> mbufs on the fly in some randomized fashion. This would serve goals >>>> like, for example: >>>> >>>> 1) running tests for applications with network processing capabilities >>>> without additional software packet generators; >>>> 2) making performance measurements with no hw inteference; >>>> 3) ability to run without root privileges, --no-pci, --no-huge, for CI >>>> build, so on. >>>> >>>> Maybe there's no such need, and these goals may be achieved by other >>>> means and this idea is flawed? Any thoughts? >>> How about a Perl/Python script to generate a PCAP file with random >>> packets and then feed the PCAP file to the PCAP PMD? >>> >>> Random can mean different requirements for different >>> users/application, I think it is difficult to fit this under a simple >>> generic API. Customizing the script for different requirements if a >>> far better option in my opinion. >> >> AFAIK, the thing about pcap pmd is that one needs to rewind pcap file >> once pcap pmd reaches its end. It requires additional (non-generic) >> handling in app code. > > So add a loop-mode to pcap pmd? It would be nice to have an option like "...,rewind=1,...".