hi, > Hello, > > I知 new to openvswitch and ryu and am trying to write a simple flow matcher > with openvswitch and ryu and I知 trying to match flows based on TCP 4 tuple. > And the open flow version I知 using is 1.2. > > This is what my add_flow function looks like. > > def add_tcp_flow(self, dp, in_port, out_port, actions, > eth_src=None, eth_dst=None, ip_src=None, ip_dst=None, > tcp_src=None, tcp_dst=None): > ofproto = dp.ofproto > > match = dp.ofproto_parser.OFPMatch(in_port=in_port, tcp_src=tcp_src, > tcp_dst=tcp_dst, ipv4_src=ip_src, > ipv4_dst=ip_dst) > inst = [dp.ofproto_parser.OFPInstructionActions( > ofproto.OFPIT_APPLY_ACTIONS, actions)] > > mod = dp.ofproto_parser.OFPFlowMod(datapath=dp, cookie=0, > cookie_mask=0, table_id=0, command=ofproto.OFPFC_ADD, > idle_timeout=0, hard_timeout=0, priority=0, > buffer_id=ofproto.OFP_NO_BUFFER, out_port=out_port, > out_group=ofproto.OFPG_ANY, flags=0, match=match, > instructions=inst) > dp.send_msg(mod) > > When I run this code, however, I get an asynchronous error thrown from the > switch. > > (Pdb) p ev.msg > OFPErrorMsg(code=9,data="\x03\x0e\x00p`\xcb'\xa0\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x > 00\x00\x00\x00\x00\x00\x00\xff\xff\xff\xff\x00\x00\x00\x03\xff\xff\xff\xff\x00\x00\x00\x00\x00\x01\x00(\x80\x00\x00\x0 > 4\x00\x00\x00\x04\x80\x00\x16\x04",type=4) > > I understand that this has an error type = 4 (OFPET_BAD_MATCH) and the code > is 9 (OFPBMC_BAD_PREREQ). > > I知 not sure what prerequisite I知 missing in my flow add code. Can someone > help me find this piece of information in the docs.
it's about prereqs defined in the spec. eg. you need eth_type=IPv4 match before matching ipv4_src, etc. OpenFlow 1.2 spec p.37 has a table showing prereqs. YAMAMOTO Takashi > > Thanks, > Srinath ------------------------------------------------------------------------------ BPM Camp - Free Virtual Workshop May 6th at 10am PDT/1PM EDT Develop your own process in accordance with the BPMN 2 standard Learn Process modeling best practices with Bonita BPM through live exercises http://www.bonitasoft.com/be-part-of-it/events/bpm-camp-virtual- event?utm_ source=Sourceforge_BPM_Camp_5_6_15&utm_medium=email&utm_campaign=VA_SF _______________________________________________ Ryu-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ryu-devel
