Did you register an event converter in pycontext.cc?
Hi,
I added vendor_msg event in the nox core (attaching the patch, but not
sure if its strictly required or if there is any work around). With
that patch applied to nox 0.5.0, I wrote following callback in the
pyswitch:
<code>
def vendor_msg_callback(*params):
print "In here for vendor message"
if params:
for para in params:
print "(%s)" % (para)
return CONTINUE
</code>
I am sending some vendor specific events from Openflow Click switch. I
get following output at the Nox console:
<output>
00035|nox|DBG:Registering switch with DPID = f5de7bce86
00036|nox.coreapps.examples.pyswitch|INFO:Switch f5de7bce86 has joined
the network
00037|openflow-event|DBG:received vendor event from 00f5de7bce86
In here for vendor message
(<nox.coreapps.pyrt.pycomponent.pyevent; proxy of <Swig Object of type
'pyevent *' at 0xb5f00578> >)
00038|openflow-event|DBG:received echo-request event from 00f5de7bce86 (len:0)
</output>
It seems that its only sending one parameter which is swig proxy
object. But I think I have written conversion function properly in
pyrt.cc. Any ideas how to fix it?
-Yogesh
On Mon, Jan 25, 2010 at 5:18 AM, Yogesh Mundada <[email protected]> wrote:
Hi KK,
Is there a way to register for vendor specific msg events in python
applications in Nox?
I see from
"http://noxrepo.org/pipermail/nox-dev_noxrepo.org/2008-December/000484.html";
that you had somehow enabled Openflow_msg_event. I am assuming that
its like a generic event thrown for any un-handled ofp_type (Is that
right?). However, when I saw code for openflow-event.cc, there is no
handle_openflow_msg() being called. Also in core.py, there is no
register_for_openflow_msg(). There is a magic etc/nox.xml file with
couple of events and filters mentioned in it. Can you shed some light
on how it is to be used?
My Nox controller version is 0.5.0 and OFClick switch is 0.8.9~2.
If I have to add this event myself, I think I would have to make
following changes at the very least:
1. Detect the packet type as OpenFlow Vendor header and write a
handler in openflow-event.cc
2. Define a Vendor_msg_event class in include/vendor-msg.hh
3. Register in event-dispatcher-component.cc
4. Write conversion functions in pyrt.cc and interface information in event.i
5. Write register_for_vendor_msg_event() in core.py
Would that be all?
-Yogesh
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