<div dir="ltr">Really? I know that the application is using a PMD driver for Intel card, will this driver work with memif too?<div><br></div><div> </div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Il giorno gio 17 mar 2022 alle ore 17:44 Dmitry Kozlyuk <<a href="mailto:dmitry.kozliuk@gmail.com">dmitry.kozliuk@gmail.com</a>> ha scritto:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">2022-03-17 16:55 (UTC+0100), Antonio Di Bacco:<br>
> Unfortunately I cannot change the applications but I only can create some<br>
> fake VFs and connect them with software.<br>
> Could OVS come to the rescue?<br>
<br>
You don't need to modify app code to communicate via shared memory:<br>
<a href="https://doc.dpdk.org/guides/nics/memif.html" rel="noreferrer" target="_blank">https://doc.dpdk.org/guides/nics/memif.html</a><br>
<br>
> <br>
> Il giorno gio 17 mar 2022 alle ore 14:27 Timothy Wood <<a href="mailto:timwood@gwu.edu" target="_blank">timwood@gwu.edu</a>> ha<br>
> scritto:<br>
> <br>
> > One option is to modify the applications to use DPDK's multi-process<br>
> > support: <a href="https://doc.dpdk.org/guides/prog_guide/multi_proc_support.html" rel="noreferrer" target="_blank">https://doc.dpdk.org/guides/prog_guide/multi_proc_support.html</a><br>
> > Essentially you would have one app read from the real port and then write<br>
> > data to a software queue in shared memory. Instead of having the second app<br>
> > read from a port it would read from the queue.<br>
> ><br>
> > If you want to build more elaborate combinations of functions, check out<br>
> > our OpenNetVM research project which focused on high performance NF<br>
> > chaining: <a href="http://sdnfv.github.io/onvm/" rel="noreferrer" target="_blank">http://sdnfv.github.io/onvm/</a><br>
> ><br>
> > ---<br>
> > Timothy Wood, Ph. D.<br>
> > he/him/his<br>
> > Associate Professor<br>
> > Department of Computer Science<br>
> > The George Washington University<br>
> > <a href="http://www.seas.gwu.edu/~timwood" rel="noreferrer" target="_blank">http://www.seas.gwu.edu/~timwood</a><br>
> ><br>
> ><br>
> > On Thu, Mar 17, 2022 at 5:29 AM Antonio Di Bacco <<a href="mailto:a.dibacco.ks@gmail.com" target="_blank">a.dibacco.ks@gmail.com</a>><br>
> > wrote:<br>
> > <br>
> >> I have two DPDK applications that are using virtual functions built on<br>
> >> top of two physical functions that correspond to the two ports of a 25 Gbps<br>
> >> ethernet card. The two physical ports are connected one to the other with<br>
> >> an optic fiber.<br>
> >> Now, I would like to realize the same setup but without using a physical<br>
> >> 25 Gbps card, I wonder if this is possible.<br>
> >><br>
> >> <br>
<br>
</blockquote></div>