def _send_arp_req(self, datapath):
pkt = packet.Packet()
pkt.add_protocol( ethernet.ethernet( ethertype = ETH_TYPE_ARP,
src = BROADCAST_STR, dst = BROADCAST_STR) )
pkt.add_protocol( arp.arp( opcode = ARP_REQUEST,
src_mac = '01:02:03:04:05:06', src_ip = '192.168.0.1',
dst_mac = BROADCAST_STR, dst_ip = '255.255.255.255') )
of_tb_func.ofSendPck(datapath, pkt, ofproto13.OFPP_FLOOD)
def _probe_switch(self, ev):
datapath = ev.switch.dp
#datapath = ev.datapath
#ofproto = datapath.ofproto
#parser = datapath.ofproto_parser
self.dp_dict[datapath.id] = datapath
#self.setup_flowtable(datapath)
for service in self.services_dict.values():
discovery_pkt = ServiceDiscoveryPacket.build_from_service(service)
for i in range(0, self.NUM_PROB_PKT):
of_func.ofSendPck(datapath, discovery_pkt, ofproto13.OFPP_FLOOD)
def build_arp_reply_from_req(self, arp_req):
datapath = self.current_msg.datapath
out_port = self.current_msg.match['in_port']
# ip and mac for arp reply
sender_ip = arp_req.dst_ip
target_ip = arp_req.src_ip
target_mac = arp_req.src_mac
sender_mac = self.arp_table[sender_ip]
pkt = packet.Packet()
pkt.add_protocol( ethernet.ethernet( ethertype = ETH_TYPE_ARP,
src = sender_mac, dst = target_mac) )
pkt.add_protocol( arp.arp( opcode = ARP_REPLY,
src_mac = sender_mac, src_ip = sender_ip,
dst_mac = target_mac, dst_ip = target_ip) )
of_func.ofSendPck(datapath, pkt, out_port)
