[dpdk-dev] [RFC] librte_pmd_packet: add PMD for AF_PACKET-based virtual devices

John W. Linville linville at tuxdriver.com
Fri Jun 6 21:57:06 CEST 2014


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?

No, sorry -- definitely needs more testing, including performance numbers...

John
-- 
John W. Linville		Someday the world will need a hero, and you
linville at tuxdriver.com			might be all we have.  Be ready.


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