On 15.06.2016 16:43, Dumitrescu, Cristian wrote: > >> -----Original Message----- >> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Yerden >> Zhumabekov >> Sent: Wednesday, June 15, 2016 10:44 AM >> To: dev at 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.
