[dpdk-users] Send and Receive packets to/from specific core

[Mahdi Moradmand Badie]

Yes, I found it before :), its a little ambiguous for me, I don't know how
I could write the specific data(message or packet) into specific core, then
change it and then read with the other core.

On 11 March 2016 at 15:54, Kyle Larose <eomereadig at gmail.com> wrote:

> On Fri, Mar 11, 2016 at 3:47 PM, Mahdi Moradmand Badie
> <mahdi.mbadie at gmail.com> wrote:
> > My big challenge is having a tested code (run able with right
> > functionality), then run and change it in order to have my task.
> > I wanna use the share memory btw cores in order to write/read to/from and
> > knowing how do that :), all available code which I found are based on
> NIC :(
> > or maybe I am wrong!!!
> > Thanks in advance,
>
> Take a look at this example:
>
>
> http://dpdk.org/doc/guides/sample_app_ug/multi_process.html#basic-multi-process-example
>
> IIRC, it uses rings to send messages back and forth between the cores.
> The code is available with the dpdk source, so it should serve as a
> good starting point to see how to set up the shared memory and use it.
>
> Does that help?
>
> >
> > On 11 March 2016 at 15:43, Kyle Larose <eomereadig at gmail.com> wrote:
> >>
> >> On Fri, Mar 11, 2016 at 3:22 PM, Mahdi Moradmand Badie
> >> <mahdi.mbadie at gmail.com> wrote:
> >> > Dear All,
> >> >
> >> > I wanna Send(write) a Packet(s) with specific data (for example x =
> 10)
> >> > from core 0 to share memory and Receive (Read) it with another Core
> (for
> >> > example Core 1), change it in Core 1 (for example X = X + 1) and write
> >> > again in share memory.
> >> > I really don't know How I could do it, I wanna do this without using
> NIC
> >> > ot
> >> > rte_eth at all, so simple and easy but I confused.
> >> > Please help me.
> >> >
> >> > PS. I know there are many example do more complex than this small
> >> > exercise
> >> > but all did it via NIC.
> >>
> >> What is your biggest challenge? Is it moving information between
> >> cores, or getting information into your application?
> >>
> >> Consider that most of the multiprocess examples in DPDK do two things:
> >> 1) Send/Receive packets to/from a NIC
> >> 2) Send packets between cores
> >>
> >> You obviously want to do #2, and looking at those examples should make
> >> how to do it fairly obvious. Is your challenge replacing #1 with
> >> something other than a NIC? If so, you *could* consider using a pcap
> >> PMD to just read packets from a file. In the past, I have used ring
> >> PMDs in conjunction with a secondary process which generates packets
> >> to inject arbitrarily formatted packets into my program.
> >>
> >> >
> >> > --
> >> > M at hdi Mor at dm@nd B at die
> >
> >
> >
> >
> > --
> > M at hdi Mor at dm@nd B at die
>



-- 
M at hdi Mor at dm@nd B at die