Hi,
> 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()
Sorry that the documentation is not enough. You need to fix two lines.
> ---------------------------------
>
> 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()
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)
data=p.data
> 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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