Re: [dpdk-dev] [PATCH v2] app/testpmd: Document what the application does.

[Ajit Khaparde <ajit.khaparde@broadcom.com>]

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On Mon, Sep 13, 2021 at 5:26 PM Ajit Khaparde
<ajit.khaparde@broadcom.com> wrote:
>
> On Mon, Sep 13, 2021 at 11:59 AM Thomas Monjalon <thomas@monjalon.net> wrote:
> >
> > 13/09/2021 20:33, Ben Pfaff:
> > > I could not find anything in the documentation that says what
> > > testpmd does.  This should save other people time trying to
> > > figure that out in the future.
> > >
> > > Signed-off-by: Ben Pfaff <blp@ovn.org>
> > [...]
> > > --- a/doc/guides/testpmd_app_ug/intro.rst
> > > +++ b/doc/guides/testpmd_app_ug/intro.rst
> > > @@ -6,9 +6,13 @@ Introduction
> > >
> > >  This document is a user guide for the ``testpmd`` example application that is shipped as part of the Data Plane Development Kit.
> > >
> > > -The ``testpmd`` application can be used to test the DPDK in a packet forwarding mode
> > > -and also to access NIC hardware features such as Flow Director.
> > > -It also serves as a example of how to build a more fully-featured application using the DPDK SDK.
> > > +``testpmd`` is a tool to test ethdev NIC features, including NIC
> > > +hardware features such as Flow Director.  It receives packets on each
> >
> > Not sure about keep mentioning Flow Director which is an Intel name
> > for an internal feature used through rte_flow rules.
> > What others think? Do we have better examples of hardware offload?
>
> We could use RSS and RFS.
> I think Receive Side Scaling and Receive Flow Steering would cover the
> intended offloads.
I forgot to mention RPS - Receive Packet Steering.

>
> >
> > > +configured port and forwards them.  By default, packets received on
> > > +port 0 are forwarded to port 1, and vice versa, and similarly for
> > > +ports 2 and 3, ports 4 and 5, and so on.  If an odd number of ports is
> > > +configured, packets received on the last port are sent back out on the
> > > +same port.
> > >
> > >  The guide shows how to build and run the testpmd application and
> > >  how to configure the application from the command line and the run-time environment.
> >
> >
> >