def arp_forwarding(self, domain, msg, arp_pkt):
datapath = msg.datapath
ofproto = datapath.ofproto
parser = datapath.ofproto_parser
arp_src_ip = arp_pkt.src_ip
arp_dst_ip = arp_pkt.dst_ip
domain_id = self.get_host_location(arp_dst_ip)
if domain_id:
# build packet_out pkt and put it into sbp, send to domain
domain = self.domains[domain_id]
out = utils._build_packet_out(datapath, ofproto.OFP_NO_BUFFER,
ofproto.OFPP_CONTROLLER,
ofproto.OFPP_LOCAL, msg.data)
out.serialize()
sbp_pkt = domain.oxproto_parser.OXPSBP(domain, data=out.buf)
domain.send_msg(sbp_pkt)
else: # access info is not existed. send to all UNknow access port
for domain in self.domains.values():
out = utils._build_packet_out(datapath, ofproto.OFP_NO_BUFFER,
ofproto.OFPP_CONTROLLER,
ofproto.OFPP_LOCAL, msg.data)
out.serialize()
sbp_pkt = domain.oxproto_parser.OXPSBP(domain, data=out.buf)
domain.send_msg(sbp_pkt)
def arp_forwarding(self, domain, msg, arp_pkt):
datapath = msg.datapath
ofproto = datapath.ofproto
parser = datapath.ofproto_parser
arp_src_ip = arp_pkt.src_ip
arp_dst_ip = arp_pkt.dst_ip
domain_id = self.get_host_location(arp_dst_ip)
if domain_id:
# build packet_out pkt and put it into sbp, send to domain
domain = self.domains[domain_id]
out = utils._build_packet_out(
datapath, ofproto.OFP_NO_BUFFER, ofproto.OFPP_CONTROLLER, ofproto.OFPP_LOCAL, msg.data
)
out.serialize()
sbp_pkt = domain.oxproto_parser.OXPSBP(domain, data=out.buf)
domain.send_msg(sbp_pkt)
else: # access info is not existed. send to all UNknow access port
for domain in self.domains.values():
out = utils._build_packet_out(
datapath, ofproto.OFP_NO_BUFFER, ofproto.OFPP_CONTROLLER, ofproto.OFPP_LOCAL, msg.data
)
out.serialize()
sbp_pkt = domain.oxproto_parser.OXPSBP(domain, data=out.buf)
domain.send_msg(sbp_pkt)
def arp_forwarding(self, msg, src_ip, dst_ip):
datapath = msg.datapath
ofproto = datapath.ofproto
parser = datapath.ofproto_parser
# dst in other domain, send to super and return.
if dst_ip in self.outer_hosts:
if isinstance(msg, parser.OFPPacketIn):
self.network_aware.raise_sbp_packet_in_event(
msg, ofproto_v1_3.OFPP_LOCAL, msg.data)
return
# host in domain.
result = self.get_host_location(dst_ip)
if result: # host record in access table.
datapath_dst, out_port = result[0], result[1]
datapath = self.datapaths[datapath_dst]
out = utils._build_packet_out(datapath, ofproto.OFP_NO_BUFFER,
ofproto.OFPP_CONTROLLER,
out_port, msg.data)
datapath.send_msg(out)
else:
self.flood(msg)
# we can not send arp to super every time.
if isinstance(msg, parser.OFPPacketIn):
self.network_aware.raise_sbp_packet_in_event(
msg, ofproto_v1_3.OFPP_LOCAL, msg.data)
# packet_out from super, record src.
if isinstance(msg, parser.OFPPacketOut):
for sw in self.access_table:
if src_ip in self.access_table[sw]:
return
self.outer_hosts.add(src_ip)
def arp_forwarding(self, msg, src_ip, dst_ip):
datapath = msg.datapath
ofproto = datapath.ofproto
parser = datapath.ofproto_parser
# dst in other domain, send to super and return.
if dst_ip in self.outer_hosts:
if isinstance(msg, parser.OFPPacketIn):
self.network_aware.raise_sbp_packet_in_event(
msg, ofproto_v1_3.OFPP_LOCAL, msg.data)
return
# host in domain.
result = self.get_host_location(dst_ip)
if result: # host record in access table.
datapath_dst, out_port = result[0], result[1]
datapath = self.datapaths[datapath_dst]
out = utils._build_packet_out(datapath, ofproto.OFP_NO_BUFFER,
ofproto.OFPP_CONTROLLER, out_port,
msg.data)
datapath.send_msg(out)
else:
self.flood(msg)
# we can not send arp to super every time.
if isinstance(msg, parser.OFPPacketIn):
self.network_aware.raise_sbp_packet_in_event(
msg, ofproto_v1_3.OFPP_LOCAL, msg.data)
# packet_out from super, record src.
if isinstance(msg, parser.OFPPacketOut):
for sw in self.access_table:
if src_ip in self.access_table[sw]:
return
self.outer_hosts.add(src_ip)
def sbp_packet_out_handler(self, ev):
msg = ev.msg
domain = ev.domain
pkt = packet.Packet(msg.data)
arp_pkt = pkt.get_protocol(arp.arp)
ip_pkt = pkt.get_protocol(ipv4.ipv4)
eth_type = pkt.get_protocols(ethernet.ethernet)[0].ethertype
if msg.actions[0].port == ofproto_v1_3.OFPP_LOCAL:
if isinstance(arp_pkt, arp.arp):
self.router.arp_forwarding(msg, arp_pkt.src_ip, arp_pkt.dst_ip)
#save msg.data for flow_mod.
elif isinstance(ip_pkt, ipv4.ipv4):
self.buffer[(eth_type, ip_pkt.src, ip_pkt.dst)] = msg.data
else:
# packet_out to datapath:port.
vport = msg.actions[0].port
dpid, port = self.network.vport[vport]
datapath = self.router.datapaths[dpid]
ofproto = datapath.ofproto
out = utils._build_packet_out(datapath, ofproto.OFP_NO_BUFFER,
ofproto.OFPP_CONTROLLER,
port, msg.data)
#save msg.data for flow_mod.
if isinstance(ip_pkt, ipv4.ipv4):
self.buffer[(eth_type, ip_pkt.src, ip_pkt.dst)] = msg.data
datapath.send_msg(out)
def flood(self, msg):
datapath = msg.datapath
ofproto = datapath.ofproto
parser = datapath.ofproto_parser
for dpid in self.access_ports:
for port in self.access_ports[dpid]:
if (dpid, port) not in self.access_table.keys():
datapath = self.datapaths[dpid]
out = utils._build_packet_out(
datapath, ofproto.OFP_NO_BUFFER,
ofproto.OFPP_CONTROLLER, port, msg.data)
datapath.send_msg(out)
def flood(self, msg):
datapath = msg.datapath
ofproto = datapath.ofproto
parser = datapath.ofproto_parser
for dpid in self.access_ports:
for port in self.access_ports[dpid]:
if (dpid, port) not in self.access_table.keys():
datapath = self.datapaths[dpid]
out = utils._build_packet_out(datapath,
ofproto.OFP_NO_BUFFER,
ofproto.OFPP_CONTROLLER,
port, msg.data)
datapath.send_msg(out)
