def _event_switch_enter_handler(self, ev):
#dpid = datapath.id
datapath = ev.switch.dp
dpid = datapath.id
if dpid in self.LSwitches:
switch = self.LSwitches[dpid]
if not switch.get_dp().is_active:
# switch has restarted
self.logger.info('%s (%s) has reconnected' %
(dpid_to_empower(dpid), dpid))
del self.LSwitches[dpid]
switch = LSwitch(datapath)
self.LSwitches[dpid] = switch
else:
self.logger.info('%s (%s) has connected' %
(dpid_to_empower(dpid), dpid))
switch = LSwitch(datapath)
switch.remove_ofrule({})
self.LSwitches[dpid] = switch
self.agent.send_of_network_item(ev.switch)
def _event_switch_enter_handler(self, ev):
#dpid = datapath.id
datapath = ev.switch.dp
dpid = datapath.id
if dpid in self.LSwitches:
switch = self.LSwitches[dpid]
if not switch.get_dp().is_active:
# switch has restarted
self.logger.info('%s (%s) has reconnected'
% (dpid_to_empower(dpid), dpid))
del self.LSwitches[dpid]
switch = LSwitch(datapath)
self.LSwitches[dpid] = switch
else:
self.logger.info('%s (%s) has connected' %
(dpid_to_empower(dpid), dpid))
switch = LSwitch(datapath)
switch.remove_ofrule({})
self.LSwitches[dpid] = switch
self.agent.send_of_network_item(ev.switch)
def _port_status_handler(self, ev):
msg = ev.msg
reason = msg.reason
port_no = msg.desc.port_no
dpid_str = dpid_to_empower(msg.datapath.id)
ofproto = msg.datapath.ofproto
if reason == ofproto.OFPPR_ADD:
self.logger.info("port added dpid=%s, port=%s", dpid_str, port_no)
elif reason == ofproto.OFPPR_DELETE:
self.logger.info("port deleted dpid=%s, port=%s", dpid_str,
port_no)
elif reason == ofproto.OFPPR_MODIFY:
self.logger.info("port modified dpid=%s, port=%s", dpid_str,
port_no)
else:
self.logger.info("Illeagal port state dpid=%s, port=%s %s",
dpid_str, port_no, reason)
def _port_status_handler(self, ev):
msg = ev.msg
reason = msg.reason
port_no = msg.desc.port_no
dpid_str = dpid_to_empower(msg.datapath.id)
ofproto = msg.datapath.ofproto
if reason == ofproto.OFPPR_ADD:
self.logger.info("port added dpid=%s, port=%s",
dpid_str, port_no)
elif reason == ofproto.OFPPR_DELETE:
self.logger.info("port deleted dpid=%s, port=%s",
dpid_str, port_no)
elif reason == ofproto.OFPPR_MODIFY:
self.logger.info("port modified dpid=%s, port=%s",
dpid_str, port_no)
else:
self.logger.info("Illeagal port state dpid=%s, port=%s %s",
dpid_str, port_no, reason)
def _packet_in_handler(self, ev):
msg = ev.msg
datapath = msg.datapath
ofproto = datapath.ofproto
pkt = packet.Packet(msg.data)
eth = pkt.get_protocol(ethernet.ethernet)
vlan_pkt = pkt.get_protocol(vlan.vlan)
if vlan_pkt is not None:
# vlan-tagged vnf traffic is related to rules
# and has its own circuits
return
if eth.ethertype == ether_types.ETH_TYPE_LLDP:
# ignore lldp packet
return
if eth.ethertype == ether_types.ETH_TYPE_IPV6:
# ignore IPV6 Packets
return
dst = eth.dst.upper()
src = eth.src.upper()
if int(dst.split(':')[0], BASE_HEX) & 1 \
and dst != "FF:FF:FF:FF:FF:FF" \
and dst != "00:00:00:00:00:00":
# ignore multicast packets, but allow broadcast packets
return
try:
self.mutex.acquire()
dpid = datapath.id
if dpid in self.LSwitches:
switch = self.LSwitches[dpid]
if not switch.get_dp().is_active:
# switch has restarted
self.logger.info('%s (%s) has reconnected' %
(dpid_to_empower(dpid), dpid))
del self.LSwitches[dpid]
switch = LSwitch(datapath)
self.LSwitches[dpid] = switch
else:
self.logger.info('%s (%s) has connected' %
(dpid_to_empower(dpid), dpid))
switch = LSwitch(datapath)
switch.flowmod(fm_type='DEL', match={})
self.LSwitches[dpid] = switch
# for both src and dst check whether these are controlled by Empower
empower_src_list = [
endpoint for endpoint in self.endpoints.values()
if src in endpoint.hwaddr_to_port
]
assert len(empower_src_list) <= 1
empower_src = None
if len(empower_src_list) == 1:
empower_src = empower_src_list[0]
empower_dst_list = [
endpoint for endpoint in self.endpoints.values()
if dst in endpoint.hwaddr_to_port
]
assert len(empower_dst_list) <= 1
empower_dst = None
if len(empower_dst_list) == 1:
empower_dst = empower_dst_list[0]
# in case both src and dst are unknown to Empower, proceed with
# regular learning switch
if empower_src is None and empower_dst is None:
# learn a mac address to avoid FLOOD next time.
switch.update_host(src, msg.in_port)
out_port = switch.get_host_port(dst)
if out_port is None:
switch.packet_out(msg, ofproto.OFPP_FLOOD)
else:
switch.flowmod(src=src,
dst=dst,
in_port=msg.in_port,
out_port=out_port)
switch.packet_out(msg, out_port)
else:
# either src or dst are Empower controlled,
target_dpid, target_port = None, None
if empower_dst is None:
target_dpid, target_port = self._find_host_dpid(dst)
if empower_dst is not None:
endpoint_port = empower_dst.hwaddr_to_port[dst]
target_dpid = endpoint_port.endpoint.dpid
target_port = endpoint_port.port_no
if target_dpid is None:
switch.packet_out(msg, ofproto.OFPP_FLOOD)
return
_, nexthop_port = self._get_nexthop(switch.get_dp_id(),
target_dpid)
if nexthop_port is None:
nexthop_port = target_port
switch.flowmod(src=src,
dst=dst,
in_port=msg.in_port,
out_port=nexthop_port,
priority=OFP_RULE_PRIORITY)
switch.packet_out(msg, nexthop_port)
except Exception:
traceback.print_exc()
raise
finally:
self.mutex.release()