Hi Marlon,
On 2015年01月10日 01:31, Marlon Olaya wrote:
> Hi dear experts, im trying to add a flow using mac src, dst, ip src and dst
> and that flow needs to change this in the packet to send it to another pc, so
> im using this code for add the flow:
> [CODE]
>
> def add_flow(self, datapath, in_port, src_mac, dst_mac,
> src_ip,dst_ip,dl_type, actions):
>
> ofproto = datapath.ofproto
>
>
> match = datapath.ofproto_parser.OFPMatch(
>
> in_port=in_port, dl_src=addrconv.mac.text_to_bin(src_mac),
> dl_dst=addrconv.mac.text_to_bin(dst_mac), dl_type = dl_type, nw_src =
> struct.unpack('!I', ipv4_to_bin(src_ip))[0], nw_dst=struct.unpack('!I',
> ipv4_to_bin(dst_ip))[0])
>
> print "****** match addflow********"
>
> print match
>
> print ""
>
>
> mod = datapath.ofproto_parser.OFPFlowMod(
>
> datapath=datapath, match=match, cookie=0,
>
> command=ofproto.OFPFC_ADD, idle_timeout=0, hard_timeout=0,
>
> priority=ofproto.OFP_DEFAULT_PRIORITY,
>
> flags=ofproto.OFPFF_SEND_FLOW_REM, actions=actions)
>
> datapath.send_msg(mod)
>
> print "****** Regla enviada al controlador********"
>
> print ""
>
> print ""
>
> [/CODE]
>
> and my actions are coded in a handler in this section:
>
> [CODE]
> if dst_ip == self.ip_fake:
> print ""
> print "Mensaje HACIA el SERVIDOR"
> print "tabla ip_to_port"
> print self.ip_to_port
> print ""
>
> (out_port, mac_server) = self.round_robin()
> print ""
> print "puerto de salida: ", out_port
> print "type", type(out_port)
> print "mac del Server: ", mac_server
>
>
> actions =
> [datapath.ofproto_parser.OFPActionSetDlDst(haddr_to_bin(mac_server)),
>
> datapath.ofproto_parser.OFPActionSetNwDst(struct.unpack('!I',
> ipv4_to_bin(self.ip_servidores[out_port-1]))[0]),
> datapath.ofproto_parser.OFPActionOutput(out_port)]
> #se anade regla al sw en el sentido user -> server
> self.add_flow(datapath, port, pkt_eth.src,
> self.mac_servidores[0],src_ip, self.ip_servidores[out_port-1],
> ether.ETH_TYPE_IP, actions)
>
> out = datapath.ofproto_parser.OFPPacketOut(
> datapath=datapath, buffer_id=buffer_id, in_port=port,
> actions=actions, data = pkt.data)
>
> datapath.send_msg(out)
> [/CODE]
>
> So, when I run my app, all seems to be ok, but when its the time to install
> the flow, the console throws me this error:
>
> error msg ev version: 0x1 msg_type 0x1 xid 0x98550208
> OFPErrorMsg(code=0,data='\x01\x0e\x00h\x98U\x02\x08\x000\x00\xe2\x00\x02\x00\x19\xd1Z"\xdat\xd45\x07)\x04\x00\x00\x00\x00\x08\x00\x00\x00\x00\x00\xc0\xa8X_\xc0\xa8Xc\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\xff\xff\xff\xff\xff\xff\x00\x01\x00\x05\x00\x10t\xd45\x07)\x04\x00\x00\x00\x00\x00\x00\x00\x07\x00\x08\xc0\xa8Xc\x00\x00\x00\x08\x00\x01\xff\xe5',type=3)
> type 0x3 code 0x0 0x1 0xe 0x0 0x68 0x98 0x55 0x2 0x8 0x0 0x30 0x0 0xe2 0x0
> 0x2 0x0 0x19 0xd1 0x5a 0x22 0xda 0x74 0xd4 0x35 0x7 0x29 0x4 0x0 0x0 0x0 0x0
> 0x8 0x0 0x0 0x0 0x0 0x0 0xc0 0xa8 0x58 0x5f 0xc0 0xa8 0x58 0x63 0x0 0x0 0x0
> 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x80 0x0 0xff
> 0xff 0xff 0xff 0xff 0xff 0x0 0x1 0x0 0x5 0x0 0x10 0x74 0xd4 0x35 0x7 0x29 0x4
> 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x7 0x0 0x8 0xc0 0xa8 0x58 0x63 0x0 0x0 0x0 0x8
> 0x0 0x1 0xff 0xe5
OFPErrorMsg show the error with type = 3(OFPET_BAD_INSTRUCTION) and code =
0(OFPBIC_UNKNOWN_INST).
---
OpenFlow Spec 1.3.4:
If the instructions requested in a flow mod message are unknown the switch
must return an
ofp_error_msg with OFPET_BAD_INSTRUCTION type and OFPBIC_UNKNOWN_INST code.
---
I think you need to set actions into instruction at add_flow() function as
folloing.
---
def add_flow(self, datapath, in_port, src_mac, dst_mac, src_ip,dst_ip,dl_type,
actions):
...
inst =
[datapath.ofproto_parser.OFPInstructionActions(ofproto.OFPIT_APPLY_ACTIONS,
actions)]
...
mod = datapath.ofproto_parser.OFPFlowMod(datapath=datapath, match=match,
cookie=0,
command=ofproto.OFPFC_ADD,
idle_timeout=0,
hard_timeout=0,
priority=ofproto.OFP_DEFAULT_PRIORITY,
flags=ofproto.OFPFF_SEND_FLOW_REM,
instructions=inst)
---
For more exmaple, please refer to add_flow() function in
ryu/app/simple_switch_13.py.
Thanks
>
> So please can anyone help me?
> I think its and error in the packet from controller to switch but I cant see
> where is it in my code.
>
> thanks
> Marlon
>
>
> ------------------------------------------------------------------------------
> Dive into the World of Parallel Programming! The Go Parallel Website,
> sponsored by Intel and developed in partnership with Slashdot Media, is your
> hub for all things parallel software development, from weekly thought
> leadership blogs to news, videos, case studies, tutorials and more. Take a
> look and join the conversation now. http://goparallel.sourceforge.net
>
>
>
> _______________________________________________
> Ryu-devel mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/ryu-devel
>
------------------------------------------------------------------------------
New Year. New Location. New Benefits. New Data Center in Ashburn, VA.
GigeNET is offering a free month of service with a new server in Ashburn.
Choose from 2 high performing configs, both with 100TB of bandwidth.
Higher redundancy.Lower latency.Increased capacity.Completely compliant.
http://p.sf.net/sfu/gigenet
_______________________________________________
Ryu-devel mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/ryu-devel
