[Ryu-devel] bug: KeyError EventOFPErrorExperimenterMsg

Iwase Yusuke

2017-07-18 02:48:47 UTC

Hi Hu,

It seems a bug of Ryu.
When Ryu receives OFPT_ERROR messages with OFPET_EXPERIMENTER type, Ryu will successfully parse
OFPT_ERROR messages, but will fail to convert messages into events for Ryu applications.

The attached patch should fix this problem on only OF 1.3.
Could you try this?

Thanks,
Iwase

Post by Hu Dingyuan
Hi,
When I use ryu to send a apply actions message, a error occurred.
'10.0.2.104'}),
instructions=[OFPInstructionActions(actions=[OFPActionSetField(eth_src='b6:9f:5d:cf:64:a8'),
OFPActionSetField(eth_dst='b6:9f:5d:cf:64:a8'), OFPActionSetField(ipv4_src='10.18.0.1/32'),
OFPActionSetField(ip_dscp=4), OFPActionSetField(ip_ecn=2), OFPActionDecNwTtl(len=8,type=24),
OFPActionOutput(len=16,max_len=65509,port=7,type=0)],type=4),
OFPInstructionGotoTable(len=8,table_id=<FlowTable.transit_counter: 110>,type=1)]
This error only occurred few times, I am not sure about why it happened.
It should be a bug of ryu?
Error in the datapath 000000ecaccde88b from ('2001:da8:215:8f2:2ec:acff:fecd:e890', 41324, 0, 0)
File "/usr/local/lib/python3.6/site-packages/ryu/lib/hub.py", line 60, in _launch
return func(*args, **kwargs)
File "/usr/local/lib/python3.6/site-packages/ryu/controller/controller.py", line 460, in
datapath_connection_factory
datapath.serve()
File "/usr/local/lib/python3.6/site-packages/ryu/controller/controller.py", line 378, in serve
self._recv_loop()
File "/usr/local/lib/python3.6/site-packages/ryu/controller/controller.py", line 132, in deactivate
method(self)
File "/usr/local/lib/python3.6/site-packages/ryu/controller/controller.py", line 273, in _recv_loop
ev = ofp_event.ofp_msg_to_ev(msg)
File "/usr/local/lib/python3.6/site-packages/ryu/controller/ofp_event.py", line 66, in ofp_msg_to_ev
return ofp_msg_to_ev_cls(msg.__class__)(msg)
File "/usr/local/lib/python3.6/site-packages/ryu/controller/ofp_event.py", line 71, in
ofp_msg_to_ev_cls
return _OFP_MSG_EVENTS[name]
KeyError: 'EventOFPErrorExperimenterMsg'
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