On Mon, 28 Oct 2013 22:35:36 -0500
Gandhimathi Velusamy <mathiy...@gmail.com> wrote:
> Hi,
> I did git pull and in the beginning it worked well. But after some time the
> controller output shows the following error message but the forwarding of
> packets is continued.
> pc-4:~/ryu/bin% sudo ryu-manager l2_switch_v1_3.py
> loading app l2_switch_v1_3.py
> loading app ryu.controller.ofp_handler
> instantiating app l2_switch_v1_3.py
> instantiating app ryu.controller.ofp_handler
> installing new source mac received from port 1
> installing new source mac received from port 2
> installing new source mac received from port 2
> Error in the datapath 0000001143e490c0 from ('155.98.39.45', 56411)
> hub: uncaught exception: Traceback (most recent call last):
> File "/usr/local/lib/python2.7/dist-packages/ryu/lib/hub.py", line 48, in
> _launch
> func(*args, **kwargs)
> File
> "/usr/local/lib/python2.7/dist-packages/ryu/controller/controller.py", line
> 312, in datapath_connection_factory
> datapath.serve()
> File
> "/usr/local/lib/python2.7/dist-packages/ryu/controller/controller.py", line
> 232, in serve
> self._recv_loop()
> File
> "/usr/local/lib/python2.7/dist-packages/ryu/controller/controller.py", line
> 97, in deactivate
> method(self)
> File
> "/usr/local/lib/python2.7/dist-packages/ryu/controller/controller.py", line
> 165, in _recv_loop
> version, msg_type, msg_len, xid, buf)
> File
> "/usr/local/lib/python2.7/dist-packages/ryu/ofproto/ofproto_parser.py",
> line 54, in msg
> return msg_parser(datapath, version, msg_type, msg_len, xid, buf)
> File
> "/usr/local/lib/python2.7/dist-packages/ryu/ofproto/ofproto_v1_3_parser.py",
> line 51, in msg_parser
> return parser(datapath, version, msg_type, msg_len, xid, buf)
> File
> "/usr/local/lib/python2.7/dist-packages/ryu/ofproto/ofproto_v1_3_parser.py",
> line 2009, in parser
> ofproto_v1_3.OFP_MATCH_SIZE)
> File
> "/usr/local/lib/python2.7/dist-packages/ryu/ofproto/ofproto_v1_3_parser.py",
> line 1133, in parser
> k, uv = ofproto_v1_3.oxm_to_user(n, value, mask)
> File "/usr/local/lib/python2.7/dist-packages/ryu/ofproto/oxm_fields.py",
> line 165, in to_user
> value = t.to_user(v)
> File "/usr/local/lib/python2.7/dist-packages/ryu/ofproto/oxm_fields.py",
> line 46, in to_user
> i = i * 256 + ord(c)
> TypeError: ord() expected a character, but string of length 0 found
Looks like the same bug. The switch sends a malformed match message. I
applied a patch that prevents crash even with malformed messages. Ryu
ignores such messages.
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