From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yerden Zhumabekov Subject: Re: random pkt generator PMD Date: Wed, 15 Jun 2016 17:10:46 +0600 Message-ID: <576137B6.2000103@sts.kz> References: <5761235C.2090906@sts.kz> <3EB4FA525960D640B5BDFFD6A3D8912647A063F9@IRSMSX108.ger.corp.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit To: "Dumitrescu, Cristian" , "dev@dpdk.org" Return-path: Received: from mgw.gov.kz (mgw.gov.kz [89.218.88.242]) by dpdk.org (Postfix) with ESMTP id 4D480B44F for ; Wed, 15 Jun 2016 13:10:48 +0200 (CEST) In-Reply-To: <3EB4FA525960D640B5BDFFD6A3D8912647A063F9@IRSMSX108.ger.corp.intel.com> List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" On 15.06.2016 16:43, Dumitrescu, Cristian wrote: > >> -----Original Message----- >> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Yerden >> Zhumabekov >> Sent: Wednesday, June 15, 2016 10:44 AM >> To: dev@dpdk.org >> Subject: [dpdk-dev] random pkt generator PMD >> >> 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.