Hi guys,
I want to send arp reply message to the switch,and I use the ryu
documentation "Build Packet",as follow:
---------------------------------
dst = 'a' * 6
src = 'b' * 6
e = ethernet.ethernet(dst, src, ether.ETH_TYPE_8021Q)
a = arp.arp(1, 0x0800, 6, 4, 2, '\a' * 6, 50, '\b' * 6, 30)
p = packet.Packet()
p.add_protocol(e)
p.add_protocol(a)
p.serialize()
---------------------------------
and in my ryu app,is as follow:
----------------------------
@set_ev_cls(ofp_event.EventOFPPacketIn, MAIN_DISPATCHER)
def _packet_in_handler(self, ev):
msg = ev.msg
datapath = msg.datapath
ofproto = datapath.ofproto
dst = haddr_to_bin('f0:4d:a3:ab:b4:73')
src = haddr_to_bin('f0:4d:a3:ab:c4:23')
e = ethernet.ethernet(dst, src, ether.ETH_TYPE_ARP)
a = arp.arp(1, ether.ETH_TYPE_IP, 6, 4, 2, src, 3232236035, dst,
3232236034)
p = packet.Packet()
p.add_protocol(e)
p.add_protocol(a)
buff = p.serialize()
actions = [datapath.ofproto_parser.OFPActionOutput(msg.in_port)]
out = datapath.ofproto_parser.OFPPacketOut(
datapath=datapath, buffer_id=0xffffffff, in_port=msg.in_port,
actions=actions,data=buff)
datapath.send_msg(out)
---------------------------------------------------
is it right?
I use wireshark to catch the of message,only to see the the info:
Packet Out (CSM) (24B) => [Malformed Packet]
the Marlformed Packet? is my code right?
Regards,
chaojiong zheng
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