def manage_association(self, switch, port, ue_hw_addr):
"""
Manage a UE association.
Create a new association or update the existing one.
"""
# Check if UE is already in self.ues dictionary
if ue_hw_addr in self.ues:
# Update UE Association
self.ues[ue_hw_addr].set_attachment(Association(switch, port))
self.logger.info("UE <%s> connected to <%s>, port %s", ue_hw_addr, str(hex(switch.switch.dp.id)), str(port.port_no))
else:
self.last_ue_id += 1
# Add a new UE creating and a new Association
self.ues[ue_hw_addr] = UE(self.last_ue_id, ue_hw_addr, ipv6_utils.ipv6_local_ucast_from_mac(ue_hw_addr))
self.ues[ue_hw_addr].set_attachment(Association(switch, port))
self.logger.info("UE <%s> connected to <%s>, port %s", ue_hw_addr, str(hex(switch.switch.dp.id)), str(port.port_no))
ev = EventUEConnected(self.ues[ue_hw_addr])
self.send_event_to_observers(ev)
def __init__(self, switch):
"""
================ =========================================================
Attribute Description
================ =========================================================
switch Ryu Switch instance
hw_addr Switch's Hardware address
hw_addr_mcast Switch's Ethernet solicited node multicast address
ipv6_local_ucast Switch's IPv6 local unicast address
_addr
ipv6_local_mcast Switch's IPv6 solicited node multicast address
_addr
links Switch's links available on the switch
is_gw Mark the switch as Gateway, Boolean instance
gw_conf Gateway configuration
is_ap Mark the switch as Access Point, Boolean instance
ap_conf Access Point configuration
layer Layer of the switch in the newtork topology
================ =========================================================
"""
self.switch = switch
hw_addr = '{0:012x}'.format(self.switch.dp.id)
self.hw_addr = ':'.join(a + b
for a, b in zip(hw_addr[::2], hw_addr[1::2]))
self.ipv6_local_ucast_addr = ipv6_utils.ipv6_local_ucast_from_mac(
self.hw_addr)
self.ipv6_local_mcast_addr = ipv6_utils.ipv6_local_mcast_from_mac(
self.hw_addr)
self.hw_addr_mcast = ipv6_utils.mac_mcast_from_ipv6_local_mcast(
self.ipv6_local_mcast_addr)
self.links = {}
self.is_gw = False
self.gw_conf = GatewayConf()
self.is_ap = False
self.ap_conf = AccessPointConf()
self.layer = float('inf')
def _send_neighbor_advertisement(self, switch, port, eth_dst): """ Send a Neighbor Advertisement packet to eth_dst. The packet is sent through the the switch. The switch uses the installed OpenFlow rules to decide where to send the Neighbor Advertisement packet. """ eth_src = switch.hw_addr ipv6_src = switch.ipv6_local_ucast_addr eth_dst = eth_dst ipv6_dst = ipv6_utils.ipv6_local_ucast_from_mac(eth_dst) # Create a Neighbor Advertisment with the extracted info nd_neighbor_adv = NeighborAdvertisement(eth_src, eth_dst, ipv6_src, ipv6_dst, switch.is_gw) pkt = nd_neighbor_adv.pkt pkt.serialize() # Send the Neighbor Advertisment req = EventPushPacket(switch, port, pkt) self.send_event(req.dst, req)
def _send_neighbor_advertisement(self, switch, port, eth_dst):
"""
Send a Neighbor Advertisement packet to eth_dst.
The packet is sent through the the switch.
The switch uses the installed OpenFlow rules to decide
where to send the Neighbor Advertisement packet.
"""
eth_src = switch.hw_addr
ipv6_src = switch.ipv6_local_ucast_addr
eth_dst = eth_dst
ipv6_dst = ipv6_utils.ipv6_local_ucast_from_mac(eth_dst)
# Create a Neighbor Advertisment with the extracted info
nd_neighbor_adv = NeighborAdvertisement(eth_src, eth_dst, ipv6_src, ipv6_dst, switch.is_gw)
pkt = nd_neighbor_adv.pkt
pkt.serialize()
# Send the Neighbor Advertisment
req = EventPushPacket(switch, port, pkt)
self.send_event(req.dst, req)
def __init__(self, switch):
"""
================ =========================================================
Attribute Description
================ =========================================================
switch Ryu Switch instance
hw_addr Switch's Hardware address
hw_addr_mcast Switch's Ethernet solicited node multicast address
ipv6_local_ucast Switch's IPv6 local unicast address
_addr
ipv6_local_mcast Switch's IPv6 solicited node multicast address
_addr
links Switch's links available on the switch
is_gw Mark the switch as Gateway, Boolean instance
gw_conf Gateway configuration
is_ap Mark the switch as Access Point, Boolean instance
ap_conf Access Point configuration
layer Layer of the switch in the newtork topology
================ =========================================================
"""
self.switch = switch
hw_addr = '{0:012x}'.format(self.switch.dp.id)
self.hw_addr = ':'.join(a+b for a, b in zip(hw_addr[::2], hw_addr[1::2]))
self.ipv6_local_ucast_addr = ipv6_utils.ipv6_local_ucast_from_mac(self.hw_addr)
self.ipv6_local_mcast_addr = ipv6_utils.ipv6_local_mcast_from_mac(self.hw_addr)
self.hw_addr_mcast = ipv6_utils.mac_mcast_from_ipv6_local_mcast(self.ipv6_local_mcast_addr)
self.links = {}
self.is_gw = False
self.gw_conf = GatewayConf()
self.is_ap = False
self.ap_conf = AccessPointConf()
self.layer = float('inf')
def manage_association(self, switch, port, ue_hw_addr):
"""
Manage a UE association.
Create a new association or update the existing one.
"""
# Check if UE is already in self.ues dictionary
if ue_hw_addr in self.ues:
# Update UE Association
self.ues[ue_hw_addr].set_attachment(Association(switch, port))
self.logger.info("UE <%s> connected to <%s>, port %s", ue_hw_addr,
str(hex(switch.switch.dp.id)), str(port.port_no))
else:
self.last_ue_id += 1
# Add a new UE creating and a new Association
self.ues[ue_hw_addr] = UE(
self.last_ue_id, ue_hw_addr,
ipv6_utils.ipv6_local_ucast_from_mac(ue_hw_addr))
self.ues[ue_hw_addr].set_attachment(Association(switch, port))
self.logger.info("UE <%s> connected to <%s>, port %s", ue_hw_addr,
str(hex(switch.switch.dp.id)), str(port.port_no))
ev = EventUEConnected(self.ues[ue_hw_addr])
self.send_event_to_observers(ev)
