Dear all,
I would like to CRAFT NOT REDIRECT the ICMP packet from the Ryu controller.
I did that:
"
@set_ev_cls(ofp_event.EventOFPPacketIn, MAIN_DISPATCHER)
def packet_in_handler(self, ev):
msg = ev.msg
datapath = msg.datapath
ofproto = datapath.ofproto
parser = datapath.ofproto_parser
pkt = packet.Packet(msg.data)
in_port = msg.match['in_port']
# print "in_port--->", in_port
######### ICMP ##############
pkt2 = packet.Packet()
pkt2.add_protocol(ethernet.ethernet(ethertype=0x0800,dst='00:00:00:00:01:02',src='00:00:00:00:01:01'))
pkt2.add_protocol(ipv4.ipv4(ttl=255,csum=0,dst='192.168.10.2',src='192.168.10.1',proto=1,option=None))
pkt2.add_protocol(icmp.icmp(type_=icmp.ICMP_ECHO_REQUEST,code=icmp.ICMP_ECHO_REPLY_CODE,csum=0,data=icmp.echo(id_=0,
seq=0, data=None)))
pkt2.serialize()
self.logger.info("packet-out %s" % (pkt2,))
data=pkt2.data
actions = [parser.OFPActionOutput(port=2)]
out =
parser.OFPPacketOut(datapath=datapath,actions=actions,in_port=ofproto.OFPP_CONTROLLER,data=data)
datapath.send_msg(out)
######### ICMP ##############
"
When the controller has been called by Packet_In massage, I got the following
error:
"hub: uncaught exception: Traceback (most recent call last):
File "/home/ubuntu/ryu/ryu/lib/hub.py", line 52, in _launch
func(*args, **kwargs)
File "/home/ubuntu/ryu/ryu/base/app_manager.py", line 275, in _event_loop
handler(ev)
File "/home/ubuntu/Desktop/2Ints-Client-2IP_GWRs-R-1Server-Ryu-ICMP.py", line
344, in packet_in_handler
datapath.send_msg(out)
File "/home/ubuntu/ryu/ryu/controller/controller.py", line 234, in send_msg
msg.serialize()
File "/home/ubuntu/ryu/ryu/ofproto/ofproto_parser.py", line 205, in serialize
self._serialize_body()
File "/home/ubuntu/ryu/ryu/ofproto/ofproto_v1_3_parser.py", line 2380, in
_serialize_body
assert self.buffer_id == 0xffffffff
AssertionError
"
I hope to get advice how to solve this problem
Anees AL-Najjar
RHD Student
School of Information Technology and Electrical Engineering (ITEE)
Office: 331, Building (78)
University of Queensland
Brisbane, QLD
Australia
Emails: 1- [email protected]
[email protected]
Mobile: +61420407168
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