Ryu experts,
How can my app receive notification when switch features reply is
received or when hello is received. I would like to get the datapath and
do some other setup specific to my app before the first packet-in
message is received.
I tried setting my own handler with CONFIG_DISPATCH but I get the
following message error:
@set_ev_cls(ofp_event.EventOFPSwitchFeatures, CONFIG_DISPATCHER)
def switch_features_handler(self, ev):
msg = ev.msg
self.datapath = datapath = msg.datapath
self.logger.info('Received switch features handler %s', ev)
...
I set the OFP version to < 1.3 to make sure that I get ports in the
switch features too:
...
class Myapp(app_manager.RyuApp):
OFP_VERSIONS = [ofproto_v1_2.OFP_VERSION]
...
PYTHONPATH=. ./bin/ryu-manager ryu/app/myapp.py --NetworkMask 192.168.1.1/24
loading app ryu/app/myapp.py
loading app ryu.controller.ofp_handler
instantiating app ryu/app/myapp.py of Myapp
instantiating app ryu.controller.ofp_handler of OFPHandler
Received switch features handler
<ryu.controller.ofp_event.EventOFPSwitchFeatures object at 0x37e9150>
hub: uncaught exception: Traceback (most recent call last):
File "/home/me/ryu/ryu/lib/hub.py", line 50, in _launch
func(*args, **kwargs)
File "/home/me/ryu/ryu/base/app_manager.py", line 256, in _event_loop
handler(ev)
File "/home/me/ryu/ryu/app/myapp.py", line 395, in
switch_features_handler
self.clean(datapath)
File "/home/me/ryu/ryu/app/myapp.py", line 383, in clean
datapath.send_delete_all_flows()
File "/home/me/ryu/ryu/controller/controller.py", line 269, in
send_delete_all_flows
out_port=self.ofproto.OFPP_NONE, flags=0, actions=None)
AttributeError: 'module' object has no attribute 'OFPP_NONE'
Thanks in advance,
--Tom
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