Re: Connecting two DPDK applications through fake virtual functions

[Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>]

2022-03-17 16:55 (UTC+0100), Antonio Di Bacco:
> Unfortunately I cannot change the applications but I only can create some
> fake VFs and connect them with software.
> Could OVS come to the rescue?

You don't need to modify app code to communicate via shared memory:
https://doc.dpdk.org/guides/nics/memif.html

> 
> Il giorno gio 17 mar 2022 alle ore 14:27 Timothy Wood <timwood@gwu.edu> ha
> scritto:
> 
> > One option is to modify the applications to use DPDK's multi-process
> > support: https://doc.dpdk.org/guides/prog_guide/multi_proc_support.html
> > Essentially you would have one app read from the real port and then write
> > data to a software queue in shared memory. Instead of having the second app
> > read from a port it would read from the queue.
> >
> > If you want to build more elaborate combinations of functions, check out
> > our OpenNetVM research project which focused on high performance NF
> > chaining: http://sdnfv.github.io/onvm/
> >
> > ---
> > Timothy Wood, Ph. D.
> > he/him/his
> > Associate Professor
> > Department of Computer Science
> > The George Washington University
> > http://www.seas.gwu.edu/~timwood
> >
> >
> > On Thu, Mar 17, 2022 at 5:29 AM Antonio Di Bacco <a.dibacco.ks@gmail.com>
> > wrote:
> >  
> >> I have two DPDK applications that are using virtual functions built on
> >> top of two physical functions that correspond to the two ports of a 25 Gbps
> >> ethernet card. The two physical ports are connected one to the other with
> >> an optic fiber.
> >> Now, I would like to realize the same setup but without using a physical
> >> 25 Gbps card, I wonder if this is possible.
> >>
> >>