well, it seems that iv solved the problem. Sorry for bother u guys :(
actions =
[{'type':'SET_FIELD','field':'eth_dst','value':eth_src},{'type':'OUTPUT','port':in_port}]
the error disappears if i wrote like that. But i'm still not sure whether
it works or not. I'll confirm it when i finished my programming.
2015-01-26 20:00 GMT+08:00 ocean shi <[email protected]>:
> hi, i want to modify the eth_dst but failed.
> Firstly, I wrote one function to add the flow entry( all of the flowing
> codes are used in OF v1.3):
>
> def add_flow_entry(dpid,match,priority,actions):
> url = "http://127.0.0.1:8080/stats/flowentry/add";
> post_data = "{'dpid':%s,'match':%s,'priority':%s,'actions':%s}" %
> (dpid,str(match),priority,str(actions))
>
> req = urllib2.Request(url,post_data)
> res = urllib2.urlopen(req)
> return res.getcode()
>
> and i use the flowing code to call it:
>
> actions =
> [{'type':'SET_FIELD','eth_dst':eth_src},{'type':'OUTPUT','port':in_port}]
> match = {'eth_type':0x0800, 'ipv4_dst':src_ip}
> priority = "2222"
>
> #I have got the dpid but it's not written here
>
> res = add_flow_entry(dpid,match,priority,actions)
>
>
> Then i got the error informatioin:
>
> Traceback (most recent call last):
> File "/usr/lib/python2.7/dist-packages/eventlet/wsgi.py", line 384, in
> handle_one_response
> result = self.application(self.environ, start_response)
> File "/usr/local/lib/python2.7/dist-packages/ryu/app/wsgi.py", line 197, in
> __call__
> return super(wsgify_hack, self).__call__(environ, start_response)
> File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 130, in __call__
> resp = self.call_func(req, *args, **self.kwargs)
> File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 195, in call_func
> return self.func(req, *args, **kwargs)
> File "/usr/local/lib/python2.7/dist-packages/ryu/app/wsgi.py", line 259, in
> __call__
> return controller(req)
> File "/usr/local/lib/python2.7/dist-packages/ryu/app/wsgi.py", line 121, in
> __call__
> return getattr(self, action)(req, **kwargs)
> File "/home/ocean/KuaiPan/ryu-master/ryu/app/ofctl_rest.py", line 357, in
> mod_flow_entry
> ofctl_v1_3.mod_flow_entry(dp, flow, cmd)
> File "/usr/local/lib/python2.7/dist-packages/ryu/lib/ofctl_v1_3.py", line
> 942, in mod_flow_entry
> inst = to_actions(dp, flow.get('actions', []))
> File "/usr/local/lib/python2.7/dist-packages/ryu/lib/ofctl_v1_3.py", line
> 108, in to_actions
> action = to_action(dp, a)
> File "/usr/local/lib/python2.7/dist-packages/ryu/lib/ofctl_v1_3.py", line
> 89, in to_action
> result = parser.OFPActionSetField(**{field: value})
> TypeError: __init__() keywords must be strings
> 127.0.0.1 - - [26/Jan/2015 19:41:17] "POST /stats/flowentry/add HTTP/1.1" 500
> 1596 0.013896
> EVENT ofp_event->switches EventOFPPacketIn
> EVENT ofp_event->Imisa EventOFPPacketIn
> hub: uncaught exception: Traceback (most recent call last):
> File "/usr/local/lib/python2.7/dist-packages/ryu/lib/hub.py", line 52, in
> _launch
> func(*args, **kwargs)
> File "/usr/local/lib/python2.7/dist-packages/ryu/base/app_manager.py", line
> 274, in _event_loop
> handler(ev)
> File "/home/ocean/KuaiPan/imisa/imisa.py", line 106, in packet_in_handler
> res = add_flow_entry(dpid,match,priority,actions)
> File "/home/ocean/KuaiPan/imisa/restapi.py", line 41, in add_flow_entry
> res = urllib2.urlopen(req)
> File "/usr/lib/python2.7/urllib2.py", line 127, in urlopen
> return _opener.open(url, data, timeout)
> File "/usr/lib/python2.7/urllib2.py", line 410, in open
> response = meth(req, response)
> File "/usr/lib/python2.7/urllib2.py", line 523, in http_response
> 'http', request, response, code, msg, hdrs)
> File "/usr/lib/python2.7/urllib2.py", line 448, in error
> return self._call_chain(*args)
> File "/usr/lib/python2.7/urllib2.py", line 382, in _call_chain
> result = func(*args)
> File "/usr/lib/python2.7/urllib2.py", line 531, in http_error_default
> raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
> HTTPError: HTTP Error 500: Internal Server Error
>
> i'm still working on it but have not find it out yet. Is there anyone met
> this problem before? Thx
>
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