> -----Original Message----- > From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of John W. Linville > Sent: Friday, June 06, 2014 12:57 PM > To: Chris Wright > Cc: dev at dpdk.org > Subject: Re: [dpdk-dev] [RFC] librte_pmd_packet: add PMD for AF_PACKET- > based virtual devices > > On Fri, Jun 06, 2014 at 12:47:48PM -0700, Chris Wright wrote: > > * John W. Linville (linville at 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 take > > > 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 specially optimized PMDs. > > No, sorry -- definitely needs more testing, including performance numbers... > Looking forward to seeing those when you have them. :-)
