[ovs-discuss] Custom Experimenter Message

Apostolis Prassas apoprassas94 at gmail.com
Tue Jul 13 14:21:33 UTC 2021

Hello again,

Thanks for the reply. That was my first approach, that is, to find an
existent experimenter pattern and follow it to build mine. However,
I have not found something similar, so could you be more specific and give
me an example of such a message/pattern that is already implemented ?
In terms of the 'ONFST' type, I have already tried it but the problem
remains the same as I described in my first email.

Thanks for your time,

Στις Δευ, 12 Ιουλ 2021 στις 10:00 μ.μ., ο/η Ben Pfaff <blp at ovn.org> έγραψε:

> On Mon, Jul 12, 2021 at 08:39:21PM +0300, Apostolis Prassas wrote:
> > Hello everyone,
> >
> > First of all, I am new it this mailing list, and I would like to
> apologize
> > if there is already a relative thread. I have searched for it, but I did
> > not find anything similar.
> >
> > So, to start with which is my goal. While I'm using an SDN controller
> > (Ryu), I'm sending an Experimenter message ( specifically an
> > ExperimenterStatsRequest message) to the open vswitch, and I would like
> the
> > switch to decode it and reply with a respective (ExperimenterStatsReply)
> > one.
> >
> > Following the Documentation, I have already added these two new messages
> > into *enum ofpraw* structure (ofp-msgs.h) like:
> > /* OFPST 1.3+ (65535): struct ofp_prop_experimenter. */
> >
> > /* OFPST 1.3+ (65535): struct ofp_prop_experimenter. */
> This is the right place but wrong approach there.  OVS has builtin
> support for experimenter messages and you can't just override that by
> trying to claim all of them.  I would look at the pattern for the
> existing experiment messages.  Since you're working on a stats message,
> I would follow the pattern for the Open Networking Foundation multipart
> messages (ONFST).
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