def send_lldp(self, datapath: Datapath):
ports = self.dpset.get_ports(datapath.id)
for port in ports:
pkt = packet.Packet()
pkt.add_protocol(
ethernet.ethernet(ethertype=ethernet.ether.ETH_TYPE_LLDP,
dst="01:80:C2:00:00:02",
src=port.hw_addr))
tlv_chassis_id = lldp.ChassisID(
subtype=lldp.ChassisID.SUB_LOCALLY_ASSIGNED,
chassis_id=(LLDPPacket.CHASSIS_ID_FMT %
dpid_to_str(datapath.id)).encode('ascii'))
tlv_port_id = lldp.PortID(subtype=lldp.PortID.SUB_PORT_COMPONENT,
port_id=struct.pack(
LLDPPacket.PORT_ID_STR,
port.port_no))
tlv_ttl = lldp.TTL(ttl=self.ttl)
tlv_end = lldp.End()
tlvs = (tlv_chassis_id, tlv_port_id, tlv_ttl, tlv_end)
lldp_pkt = lldp.lldp(tlvs)
pkt.add_protocol(lldp_pkt)
try:
self._send_packet(datapath, port.port_no, pkt)
except Exception as e:
print(str(e))
def lldp_packet(dpid, port_no, dl_addr, ttl):
pkt = packet.Packet()
dst = lldp.LLDP_MAC_NEAREST_BRIDGE
src = dl_addr
ethertype = ETH_TYPE_LLDP
eth_pkt = ethernet.ethernet(dst, src, ethertype)
pkt.add_protocol(eth_pkt)
tlv_chassis_id = lldp.ChassisID(
subtype=lldp.ChassisID.SUB_LOCALLY_ASSIGNED,
chassis_id=(LLDPPacket.CHASSIS_ID_FMT %
dpid_to_str(dpid)).encode('ascii'))
tlv_port_id = lldp.PortID(subtype=lldp.PortID.SUB_PORT_COMPONENT,
port_id=struct.pack(LLDPPacket.PORT_ID_STR,
port_no))
tlv_ttl = lldp.TTL(ttl=ttl)
tlv_end = lldp.End()
tlvs = (tlv_chassis_id, tlv_port_id, tlv_ttl, tlv_end)
lldp_pkt = lldp.lldp(tlvs)
pkt.add_protocol(lldp_pkt)
pkt.serialize()
return pkt.data
def test_json(self):
chassis_id = lldp.ChassisID(subtype=lldp.ChassisID.SUB_MAC_ADDRESS,
chassis_id=b'\x00\x01\x30\xf9\xad\xa0')
port_id = lldp.PortID(subtype=lldp.PortID.SUB_INTERFACE_NAME,
port_id=b'1/1')
ttl = lldp.TTL(ttl=120)
port_desc = lldp.PortDescription(
port_description=b'Summit300-48-Port 1001\x00')
sys_name = lldp.SystemName(system_name=b'Summit300-48\x00')
sys_desc = lldp.SystemDescription(
system_description=b'Summit300-48 - Version 7.4e.1 (Build 5) '
+ b'by Release_Master 05/27/05 04:53:11\x00')
sys_cap = lldp.SystemCapabilities(
system_cap=0x14,
enabled_cap=0x14)
man_addr = lldp.ManagementAddress(
addr_subtype=0x06, addr=b'\x00\x01\x30\xf9\xad\xa0',
intf_subtype=0x02, intf_num=1001,
oid='')
org_spec = lldp.OrganizationallySpecific(
oui=b'\x00\x12\x0f', subtype=0x02, info=b'\x07\x01\x00')
end = lldp.End()
tlvs = (chassis_id, port_id, ttl, port_desc, sys_name,
sys_desc, sys_cap, man_addr, org_spec, end)
lldp1 = lldp.lldp(tlvs)
jsondict = lldp1.to_jsondict()
lldp2 = lldp.lldp.from_jsondict(jsondict['lldp'])
eq_(str(lldp1), str(lldp2))
def test_serialize(self):
pkt = packet.Packet()
dst = lldp.LLDP_MAC_NEAREST_BRIDGE
src = '00:04:96:1f:a7:26'
ethertype = ether.ETH_TYPE_LLDP
eth_pkt = ethernet.ethernet(dst, src, ethertype)
pkt.add_protocol(eth_pkt)
tlv_chassis_id = lldp.ChassisID(subtype=lldp.ChassisID.SUB_MAC_ADDRESS,
chassis_id=addrconv.mac.
text_to_bin(src))
tlv_port_id = lldp.PortID(subtype=lldp.PortID.SUB_INTERFACE_NAME,
port_id=b'1/3')
tlv_ttl = lldp.TTL(ttl=120)
tlv_end = lldp.End()
tlvs = (tlv_chassis_id, tlv_port_id, tlv_ttl, tlv_end)
lldp_pkt = lldp.lldp(tlvs)
pkt.add_protocol(lldp_pkt)
eq_(len(pkt.protocols), 2)
pkt.serialize()
# Note: If ethernet frame is less than 60 bytes length,
# ethernet.ethernet() appends padding to the payload.
# So, we splits the serialized data to compare.
data_len = len(self.data)
pkt_data_lldp = pkt.data[:data_len]
pkt_data_pad = pkt.data[data_len:]
eq_(b'\x00' * (60 - data_len), pkt_data_pad)
eq_(self.data, pkt_data_lldp)
def send_lldp_packet(datapath, port_no, data_size):
# data_size 0~1440
ofp = datapath.ofproto
parser = datapath.ofproto_parser
pkt = packet.Packet()
pkt.add_protocol(ethernet.ethernet(ethertype=ether_types.ETH_TYPE_LLDP))
tlv_chassis_id = lldp.ChassisID(
subtype=lldp.ChassisID.SUB_LOCALLY_ASSIGNED,
chassis_id=str(datapath.id))
tlv_port_id = lldp.PortID(subtype=lldp.PortID.SUB_LOCALLY_ASSIGNED,
port_id=str(port_no))
tlv_ttl = lldp.TTL(ttl=10)
tlv_end = lldp.End()
tlvs = (tlv_chassis_id, tlv_port_id, tlv_ttl, tlv_end)
pkt.add_protocol(lldp.lldp(tlvs))
pkt.serialize()
data = pkt.data # 60bytes
# bytes in one packet ,can set 0~1440 because MTU Max is 1500
data = data + bytearray(1440)
actions = [parser.OFPActionOutput(port=port_no)]
match = datapath.ofproto_parser.OFPMatch(
in_port=datapath.ofproto.OFPP_CONTROLLER)
out = parser.OFPPacketOut(datapath=datapath,
buffer_id=ofp.OFP_NO_BUFFER,
match=match,
actions=actions,
data=data)
datapath.send_msg(out)
def send_lldp(self, datapath, port_no, hw_addr):
ofproto = datapath.ofproto
pkt = packet.Packet()
pkt.add_protocol(
ethernet.ethernet(ethertype=ether_types.ETH_TYPE_LLDP,
src=hw_addr,
dst=lldp.LLDP_MAC_NEAREST_BRIDGE))
chassis = lldp.ChassisID(subtype=lldp.ChassisID.SUB_LOCALLY_ASSIGNED,
chassis_id=str(datapath.id))
port = lldp.PortID(subtype=lldp.PortID.SUB_LOCALLY_ASSIGNED,
port_id=str(port_no))
ttl = lldp.TTL(ttl=10)
end = lldp.End()
tlvs = (chassis, port, ttl, end)
pkt.add_protocol(lldp.lldp(tlvs))
pkt.serialize()
data = pkt.data
parser = datapath.ofproto_parser
actions = [parser.OFPActionOutput(port=port_no)]
out = parser.OFPPacketOut(datapath=datapath,
buffer_id=ofproto.OFP_NO_BUFFER,
in_port=ofproto.OFPP_CONTROLLER,
actions=actions,
data=data)
datapath.send_msg(out)
def send_lldp_packet(self, datapath, port_no, hw_addr):
ofproto = datapath.ofproto
parser = datapath.ofproto_parser
timestamp = time.time()
pkt = packet.Packet()
pkt.add_protocol(
ethernet.ethernet(ethertype=self.lldp_type,
src=hw_addr,
dst=lldp.LLDP_MAC_NEAREST_BRIDGE))
tlv_chassis_id = lldp.ChassisID(
subtype=lldp.ChassisID.SUB_LOCALLY_ASSIGNED,
chassis_id=str(datapath.id))
tlv_port_id = lldp.PortID(subtype=lldp.PortID.SUB_LOCALLY_ASSIGNED,
port_id=str(port_no))
tlv_ttl = lldp.TTL(ttl=10)
tlv_time = lldp.TimeStamp(timestamp=timestamp)
tlv_end = lldp.End()
tlvs = (tlv_chassis_id, tlv_port_id, tlv_ttl, tlv_time, tlv_end)
pkt.add_protocol(lldp.lldp(tlvs))
pkt.serialize()
data = pkt.data
actions = [parser.OFPActionOutput(port_no)]
out = parser.OFPPacketOut(datapath=datapath,
buffer_id=ofproto.OFP_NO_BUFFER,
in_port=ofproto.OFPP_CONTROLLER,
actions=actions,
data=data)
datapath.send_msg(out)
def test_to_string(self):
chassis_id = lldp.ChassisID(subtype=lldp.ChassisID.SUB_MAC_ADDRESS,
chassis_id=b'\x00\x04\x96\x1f\xa7\x26')
port_id = lldp.PortID(subtype=lldp.PortID.SUB_INTERFACE_NAME,
port_id=b'1/3')
ttl = lldp.TTL(ttl=120)
end = lldp.End()
tlvs = (chassis_id, port_id, ttl, end)
lldp_pkt = lldp.lldp(tlvs)
chassis_id_values = {
'subtype': lldp.ChassisID.SUB_MAC_ADDRESS,
'chassis_id': b'\x00\x04\x96\x1f\xa7\x26',
'len': chassis_id.len,
'typelen': chassis_id.typelen
}
_ch_id_str = ','.join([
'%s=%s' % (k, repr(chassis_id_values[k]))
for k, v in inspect.getmembers(chassis_id)
if k in chassis_id_values
])
tlv_chassis_id_str = '%s(%s)' % (lldp.ChassisID.__name__, _ch_id_str)
port_id_values = {
'subtype': port_id.subtype,
'port_id': port_id.port_id,
'len': port_id.len,
'typelen': port_id.typelen
}
_port_id_str = ','.join([
'%s=%s' % (k, repr(port_id_values[k]))
for k, v in inspect.getmembers(port_id) if k in port_id_values
])
tlv_port_id_str = '%s(%s)' % (lldp.PortID.__name__, _port_id_str)
ttl_values = {'ttl': ttl.ttl, 'len': ttl.len, 'typelen': ttl.typelen}
_ttl_str = ','.join([
'%s=%s' % (k, repr(ttl_values[k]))
for k, v in inspect.getmembers(ttl) if k in ttl_values
])
tlv_ttl_str = '%s(%s)' % (lldp.TTL.__name__, _ttl_str)
end_values = {'len': end.len, 'typelen': end.typelen}
_end_str = ','.join([
'%s=%s' % (k, repr(end_values[k]))
for k, v in inspect.getmembers(end) if k in end_values
])
tlv_end_str = '%s(%s)' % (lldp.End.__name__, _end_str)
_tlvs_str = '(%s, %s, %s, %s)'
tlvs_str = _tlvs_str % (tlv_chassis_id_str, tlv_port_id_str,
tlv_ttl_str, tlv_end_str)
_lldp_str = '%s(tlvs=%s)'
lldp_str = _lldp_str % (lldp.lldp.__name__, tlvs_str)
eq_(str(lldp_pkt), lldp_str)
eq_(repr(lldp_pkt), lldp_str)
def test_serialize_without_ethernet(self):
tlv_chassis_id = lldp.ChassisID(subtype=lldp.ChassisID.SUB_MAC_ADDRESS,
chassis_id=b'\x00\x04\x96\x1f\xa7\x26')
tlv_port_id = lldp.PortID(subtype=lldp.PortID.SUB_INTERFACE_NAME,
port_id=b'1/3')
tlv_ttl = lldp.TTL(ttl=120)
tlv_end = lldp.End()
tlvs = (tlv_chassis_id, tlv_port_id, tlv_ttl, tlv_end)
lldp_pkt = lldp.lldp(tlvs)
eq_(lldp_pkt.serialize(None, None),
self.data[ethernet.ethernet._MIN_LEN:])
def test_json(self):
chassis_id = lldp.ChassisID(subtype=lldp.ChassisID.SUB_MAC_ADDRESS,
chassis_id=b'\x00\x04\x96\x1f\xa7\x26')
port_id = lldp.PortID(subtype=lldp.PortID.SUB_INTERFACE_NAME,
port_id=b'1/3')
ttl = lldp.TTL(ttl=120)
end = lldp.End()
tlvs = (chassis_id, port_id, ttl, end)
lldp1 = lldp.lldp(tlvs)
jsondict = lldp1.to_jsondict()
lldp2 = lldp.lldp.from_jsondict(jsondict['lldp'])
eq_(str(lldp1), str(lldp2))
def __init__(self, switch):
self.switch = switch
e = ethernet.ethernet(src='12:34:56:ab:cd:ef',
dst='00:11:22:33:44:55',
ethertype=35020)
lldp_ch = lldp.ChassisID(subtype=7, chassis_id=str(switch.id))
lldp_port = lldp.PortID(subtype=7, port_id='Openflow')
lldp_ttl = lldp.TTL(ttl=1024)
lldp_end = lldp.End()
l = lldp.lldp([lldp_ch, lldp_port, lldp_ttl, lldp_end])
p = packet.Packet()
p.add_protocol(e)
p.add_protocol(l)
self.packet = p
def test_serialize(self):
pkt = packet.Packet()
dst = lldp.LLDP_MAC_NEAREST_BRIDGE
src = '00:01:30:f9:ad:a0'
ethertype = ether.ETH_TYPE_LLDP
eth_pkt = ethernet.ethernet(dst, src, ethertype)
pkt.add_protocol(eth_pkt)
tlv_chassis_id = lldp.ChassisID(
subtype=lldp.ChassisID.SUB_MAC_ADDRESS,
chassis_id=addrconv.mac.text_to_bin(src))
tlv_port_id = lldp.PortID(subtype=lldp.PortID.SUB_INTERFACE_NAME,
port_id=b'1/1')
tlv_ttl = lldp.TTL(ttl=120)
tlv_port_description = lldp.PortDescription(
port_description=b'Summit300-48-Port 1001\x00')
tlv_system_name = lldp.SystemName(system_name=b'Summit300-48\x00')
tlv_system_description = lldp.SystemDescription(
system_description=b'Summit300-48 - Version 7.4e.1 (Build 5) ' +
b'by Release_Master 05/27/05 04:53:11\x00')
tlv_system_capabilities = lldp.SystemCapabilities(
subtype=lldp.ChassisID.SUB_CHASSIS_COMPONENT,
system_cap=0x14,
enabled_cap=0x14)
tlv_management_address = lldp.ManagementAddress(
addr_subtype=0x06,
addr=b'\x00\x01\x30\xf9\xad\xa0',
intf_subtype=0x02,
intf_num=1001,
oid=b'')
tlv_organizationally_specific = lldp.OrganizationallySpecific(
oui=b'\x00\x12\x0f', subtype=0x02, info=b'\x07\x01\x00')
tlv_end = lldp.End()
tlvs = (tlv_chassis_id, tlv_port_id, tlv_ttl, tlv_port_description,
tlv_system_name, tlv_system_description,
tlv_system_capabilities, tlv_management_address,
tlv_organizationally_specific, tlv_end)
lldp_pkt = lldp.lldp(tlvs)
pkt.add_protocol(lldp_pkt)
eq_(len(pkt.protocols), 2)
pkt.serialize()
# self.data has many organizationally specific TLVs
data = six.binary_type(pkt.data[:-2])
eq_(data, self.data[:len(data)])
def lldp_packet(dpid,
port_no,
dl_addr,
ttl,
vport_no=ofproto_v1_0.OFPP_NONE):
pkt = packet.Packet()
dst = lldp.LLDP_MAC_NEAREST_BRIDGE
src = dl_addr
ethertype = ETH_TYPE_LLDP
eth_pkt = ethernet.ethernet(dst, src, ethertype)
pkt.add_protocol(eth_pkt)
tlv_chassis_id = lldp.ChassisID(
subtype=lldp.ChassisID.SUB_LOCALLY_ASSIGNED,
chassis_id=LLDPPacket.CHASSIS_ID_FMT % dpid_to_str(dpid))
tlv_port_id = lldp.PortID(subtype=lldp.PortID.SUB_PORT_COMPONENT,
port_id=struct.pack(LLDPPacket.PORT_ID_STR,
port_no))
tlv_ttl = lldp.TTL(ttl=ttl)
tlv_end = lldp.End()
tlvs = (tlv_chassis_id, tlv_port_id, tlv_ttl, tlv_end)
# Add LLDPDU for OXP.
if CONF.oxp_role is not None:
tlv_domain_id = lldp.DomainID(
subtype=lldp.DomainID.SUB_LOCALLY_ASSIGNED,
domain_id=LLDPPacket.DOMAIN_ID_FMT %
dpid_to_str(CONF.oxp_domain_id))
tlv_vport_id = lldp.VPortID(
subtype=lldp.VPortID.SUB_PORT_COMPONENT,
vport_id=struct.pack(LLDPPacket.VPORT_ID_STR, vport_no))
tlvs = (tlv_chassis_id, tlv_port_id, tlv_ttl, tlv_domain_id,
tlv_vport_id, tlv_end)
lldp_pkt = lldp.lldp(tlvs)
pkt.add_protocol(lldp_pkt)
pkt.serialize()
return pkt.data
def prepare_lldp_packet(node, port, vlan_id):
"""
Prepare the LLDP frame to be used by PacketOut
Args:
node: destination node
port: destination port
vlan_id: vlan tag to be added to pkt
Returns:
an Ethernet+LLDP frame (data field of PacketOut)
"""
pkt = packet.Packet()
# Generate Ethernet frame
dst = lldp.LLDP_MAC_NEAREST_BRIDGE
src = 'ca:fe:ca:fe:ca:fe'
vlan_pkt = None
if vlan_id > 1:
ethertype = ether.ETH_TYPE_8021Q
vlan_pkt = vlan.vlan(vid=vlan_id, ethertype=ether.ETH_TYPE_LLDP)
else:
ethertype = ether.ETH_TYPE_LLDP
eth_pkt = ethernet.ethernet(dst, src, ethertype)
pkt.add_protocol(eth_pkt)
if vlan_id > 1:
pkt.add_protocol(vlan_pkt)
# Generate LLDP packet
dp = '%016x' % node.dpid
chassis_subtype = lldp.ChassisID.SUB_LOCALLY_ASSIGNED
tlv_chassis_id = lldp.ChassisID(subtype=chassis_subtype,
chassis_id=dp)
tlv_port_id = lldp.PortID(subtype=lldp.PortID.SUB_PORT_COMPONENT,
port_id=(b'%s' % port))
tlv_ttl = lldp.TTL(ttl=120)
tlv_end = lldp.End()
tlvs = (tlv_chassis_id, tlv_port_id, tlv_ttl, tlv_end)
lldp_pkt = lldp.lldp(tlvs)
pkt.add_protocol(lldp_pkt)
pkt.serialize()
return pkt
def lldp_beacon(eth_src,
chassis_id,
port_id,
ttl,
org_tlvs=None,
system_name=None,
port_descr=None):
"""Return an LLDP frame suitable for a host/access port.
Args:
eth_src (str): source Ethernet MAC address.
chassis_id (str): Chassis ID.
port_id (int): port ID,
TTL (int): TTL for payload.
org_tlvs (list): list of tuples of (OUI, subtype, info).
Returns:
ryu.lib.packet.ethernet: Ethernet packet with header.
"""
pkt = build_pkt_header(None, eth_src, lldp.LLDP_MAC_NEAREST_BRIDGE,
valve_of.ether.ETH_TYPE_LLDP)
tlvs = [
lldp.ChassisID(subtype=lldp.ChassisID.SUB_MAC_ADDRESS,
chassis_id=addrconv.mac.text_to_bin(chassis_id)),
lldp.PortID(subtype=lldp.PortID.SUB_INTERFACE_NAME,
port_id=str(port_id).encode('utf-8')),
lldp.TTL(ttl=ttl)
]
for tlv, info_name, info in ((lldp.SystemName, 'system_name', system_name),
(lldp.PortDescription, 'port_description',
port_descr)):
if info is not None:
info_args = {info_name: info.encode('UTF-8')}
tlvs.append(tlv(**info_args))
if org_tlvs is not None:
for tlv_oui, tlv_subtype, tlv_info in org_tlvs:
tlvs.append(
lldp.OrganizationallySpecific(oui=tlv_oui,
subtype=tlv_subtype,
info=tlv_info))
tlvs.append(lldp.End())
lldp_pkt = lldp.lldp(tlvs)
pkt.add_protocol(lldp_pkt)
pkt.serialize()
return pkt
def send_lldp_packet(self, datapath, port, hw_addr, ttl):
#表示對應的 ofproto module
ofproto = datapath.ofproto
#表示對應的 ofproto_parser module
ofp_parser = datapath.ofproto_parser
#產生一個封包object
pkt = packet.Packet()
#ethertype: LLDP
#src: 發送 LLDP 的 switch port 的 mac
#dst: LLDP_MAC_NEAREST_BRIDGE
pkt.add_protocol(
ethernet.ethernet(ethertype=ether_types.ETH_TYPE_LLDP,
src=hw_addr,
dst=lldp.LLDP_MAC_NEAREST_BRIDGE))
#chassis_id: 發送 LLDP 封包的 switch id
chassis_id = lldp.ChassisID(
subtype=lldp.ChassisID.SUB_LOCALLY_ASSIGNED,
chassis_id=str(datapath.id))
#port_id: 發送 LLDP 封包的 switch port id
port_id = lldp.PortID(subtype=lldp.PortID.SUB_LOCALLY_ASSIGNED,
port_id=str(port))
#Time to live
ttl = lldp.TTL(ttl=10)
end = lldp.End()
tlvs = (chassis_id, port_id, ttl, end)
pkt.add_protocol(lldp.lldp(tlvs))
pkt.serialize()
#self.logger.info("packet-out %s" % pkt)
data = pkt.data
actions = [ofp_parser.OFPActionOutput(port=port)]
out = ofp_parser.OFPPacketOut(datapath=datapath,
buffer_id=ofproto.OFP_NO_BUFFER,
in_port=ofproto.OFPP_CONTROLLER,
actions=actions,
data=data)
datapath.send_msg(out)
def create_discovery_packet (self, dpid, port_no, dl_addr):
"""
Build discovery packet
"""
CHASSIS_ID_PREFIX = 'dpid:'
#CHASSIS_ID_PREFIX_LEN = len(CHASSIS_ID_PREFIX)
CHASSIS_ID_FMT = CHASSIS_ID_PREFIX + '%s'
PORT_ID_STR = '!I' # uint32_t
pkt = packet.Packet()
dst = lldp.LLDP_MAC_NEAREST_BRIDGE
src = dl_addr
ethertype = ether.ETH_TYPE_LLDP
eth_pkt = ethernet.ethernet(dst, src, ethertype)
pkt.add_protocol(eth_pkt)
tlv_chassis_id = lldp.ChassisID(
subtype=lldp.ChassisID.SUB_LOCALLY_ASSIGNED,
chassis_id=CHASSIS_ID_FMT %
dpid_to_str(dpid))
tlv_port_id = lldp.PortID(subtype=lldp.PortID.SUB_PORT_COMPONENT,
port_id=struct.pack(
PORT_ID_STR,
port_no))
tlv_ttl = lldp.TTL(ttl=120)
tlv_end = lldp.End()
tlvs = (tlv_chassis_id, tlv_port_id, tlv_ttl, tlv_end)
lldp_pkt = lldp.lldp(tlvs)
pkt.add_protocol(lldp_pkt)
pkt.serialize()
return pkt.data
def test_serialize(self):
pkt = packet.Packet()
dst = lldp.LLDP_MAC_NEAREST_BRIDGE
src = '\x00\x04\x96\x1f\xa7\x26'
ethertype = ether.ETH_TYPE_LLDP
eth_pkt = ethernet.ethernet(dst, src, ethertype)
pkt.add_protocol(eth_pkt)
tlv_chassis_id = lldp.ChassisID(subtype=lldp.ChassisID.SUB_MAC_ADDRESS,
chassis_id=src)
tlv_port_id = lldp.PortID(subtype=lldp.PortID.SUB_INTERFACE_NAME,
port_id='1/3')
tlv_ttl = lldp.TTL(ttl=120)
tlv_end = lldp.End()
tlvs = (tlv_chassis_id, tlv_port_id, tlv_ttl, tlv_end)
lldp_pkt = lldp.lldp(tlvs)
pkt.add_protocol(lldp_pkt)
eq_(len(pkt.protocols), 2)
pkt.serialize()
eq_(pkt.data, self.data)
def new_dp(self, dp):
# Let's go with LLDP for topology build-up
# priority has 16 bits, here use TOP PRIORITY
match = dp.ofproto_parser.OFPMatch(eth_type=ether_types.ETH_TYPE_LLDP)
actions = [
dp.ofproto_parser.OFPActionOutput(dp.ofproto.OFPP_CONTROLLER)
]
inst = [
dp.ofproto_parser.OFPInstructionActions(
dp.ofproto.OFPIT_APPLY_ACTIONS, actions)
]
flow_mod = dp.ofproto_parser.OFPFlowMod(datapath=dp,
table_id=0,
priority=2**16 - 1,
match=match,
instructions=inst)
dp.send_msg(flow_mod)
layer_lldp = lldp.lldp(tlvs=[
lldp.ChassisID(subtype=lldp.ChassisID.SUB_LOCALLY_ASSIGNED,
chassis_id=str(dp.id)),
lldp.PortID(subtype=lldp.PortID.SUB_PORT_COMPONENT, port_id='0'),
lldp.TTL(ttl=1),
lldp.End()
])
layer_ether = ethernet.ethernet(dst=lldp.LLDP_MAC_NEAREST_BRIDGE,
src=self.dps[dp.id].hwaddr,
ethertype=ether.ETH_TYPE_LLDP)
pkt = packet.Packet()
pkt.add_protocol(layer_ether)
pkt.add_protocol(layer_lldp)
pkt.serialize()
print("depositing new dp............")
self.dps[dp.id].this_dp = dp
self.dps[dp.id].prober = pkt
def lldp_packet(dpid, port_no, queue_id, dl_addr, ttl):
pkt = packet.Packet()
dst = lldp.LLDP_MAC_NEAREST_BRIDGE
src = dl_addr
ethertype = ETH_TYPE_LLDP
eth_pkt = ethernet.ethernet(dst, src, ethertype)
pkt.add_protocol(eth_pkt)
tlv_chassis_id = lldp.ChassisID(
subtype=lldp.ChassisID.SUB_LOCALLY_ASSIGNED,
chassis_id=(LLDPPacket.CHASSIS_ID_FMT %
dpid_to_str(dpid)).encode('ascii'))
tlv_port_id = lldp.PortID(subtype=lldp.PortID.SUB_PORT_COMPONENT,
port_id=struct.pack(
LLDPPacket.PORT_ID_STR,
port_no))
tlv_ttl = lldp.TTL(ttl=ttl)
tlv_end = lldp.End()
############################################################################################
# ADD: Organisationally specific TLV, which consists of the link data
# dpid, port_no, queue
# ##########################################################################################
tlv_link_data_1 = lldp.OrganizationallySpecific(oui='1', subtype=0, info=str(dpid))
tlv_link_data_2 = lldp.OrganizationallySpecific(oui='1', subtype=0, info=str(port_no))
tlv_link_data_3 = lldp.OrganizationallySpecific(oui='1', subtype=0, info=str(queue_id))
tlv_link_data_4 = lldp.OrganizationallySpecific(oui='1', subtype=0, info=str(Decimal(time.time())))
############################################################################################
tlvs = (tlv_chassis_id, tlv_port_id, tlv_ttl, tlv_link_data_1, tlv_link_data_2,
tlv_link_data_3, tlv_link_data_4, tlv_end)
lldp_pkt = lldp.lldp(tlvs)
pkt.add_protocol(lldp_pkt)
pkt.serialize()
return pkt.data
def test_serialize(self):
pkt = packet.Packet()
dst = lldp.LLDP_MAC_NEAREST_BRIDGE
src = '00:04:96:1f:a7:26'
ethertype = ether.ETH_TYPE_LLDP
eth_pkt = ethernet.ethernet(dst, src, ethertype)
pkt.add_protocol(eth_pkt)
tlv_chassis_id = lldp.ChassisID(
subtype=lldp.ChassisID.SUB_MAC_ADDRESS,
chassis_id=addrconv.mac.text_to_bin(src))
tlv_port_id = lldp.PortID(subtype=lldp.PortID.SUB_INTERFACE_NAME,
port_id=b'1/3')
tlv_ttl = lldp.TTL(ttl=120)
tlv_end = lldp.End()
tlvs = (tlv_chassis_id, tlv_port_id, tlv_ttl, tlv_end)
lldp_pkt = lldp.lldp(tlvs)
pkt.add_protocol(lldp_pkt)
eq_(len(pkt.protocols), 2)
pkt.serialize()
eq_(pkt.data, self.data)
def _upstream_collector(self, pkt):
(version, msg_type, msg_len, xid) = ofproto_parser.header(pkt)
# Switch configuration messages
if msg_type == ofproto_v1_0.OFPT_FEATURES_REPLY:
# print("Reply xid: " + hex(xid))
msg = ofproto_v1_0_parser.OFPSwitchFeatures.parser(self.datapath, version, msg_type, msg_len, xid, pkt)
match = ofproto_v1_0_parser.OFPMatch(dl_type=ETH_TYPE_LLDP, dl_dst=lldp.LLDP_MAC_NEAREST_BRIDGE)
cookie = 0
command = ofproto_v1_0.OFPFC_ADD
idle_timeout = hard_timeout = 0
priority = 0
buffer_id = ofproto_v1_0.OFP_NO_BUFFER
out_port = ofproto_v1_0.OFPP_NONE
flags = 0
actions = [ofproto_v1_0_parser.OFPActionOutput(ofproto_v1_0.OFPP_CONTROLLER)]
mod = ofproto_v1_0_parser.OFPFlowMod(self.datapath, match, cookie, command, idle_timeout, hard_timeout, priority, buffer_id, out_port, flags, actions)
mod.serialize()
self.id = msg.datapath_id
self.ports = msg.ports
# print(str(self.id) + " : Receive Features Reply Message")
# print(msg)
for port in self.ports.values():
db_message = {"switch_id": hex(self.id),
"port_no": port.port_no,
"hw_addr": port.hw_addr,
"timestamp": datetime.datetime.utcnow()}
try:
self.db.switch_port.insert_one(db_message)
except:
if(self.id != None):
print(datetime.datetime.utcnow().strftime('%Y/%m/%d %H:%M:%S') + " : ERROR [" + str(hex(self.id)) + "] --- Failed to write data into database")
else:
print(datetime.datetime.utcnow().strftime('%Y/%m/%d %H:%M:%S') + " : ERROR [" + str(self.id) + "] --- Failed to write data into database")
pkt_lldp = packet.Packet()
dst = BROADCAST_STR
src = port.hw_addr
ethertype = ETH_TYPE_LLDP
eth_pkt = ethernet.ethernet(dst, src, ethertype)
pkt_lldp.add_protocol(eth_pkt)
tlv_chassis_id = lldp.ChassisID(
subtype=lldp.ChassisID.SUB_LOCALLY_ASSIGNED,
chassis_id='dpid:%s' % dpid_to_str(self.id))
tlv_port_id = lldp.PortID(subtype=lldp.PortID.SUB_PORT_COMPONENT,
port_id=struct.pack('!I', port.port_no))
tlv_ttl = lldp.TTL(ttl=120)
tlv_desc = lldp.PortDescription(port_description="ProxyTopologyMonitorLLDP")
tlv_end = lldp.End()
tlvs = (tlv_chassis_id, tlv_port_id, tlv_ttl, tlv_desc, tlv_end)
lldp_pkt = lldp.lldp(tlvs)
pkt_lldp.add_protocol(lldp_pkt)
pkt_lldp.serialize()
actions = [ofproto_v1_0_parser.OFPActionOutput(port.port_no)]
out = ofproto_v1_0_parser.OFPPacketOut(
datapath=self.datapath, in_port=ofproto_v1_0.OFPP_CONTROLLER,
buffer_id=ofproto_v1_0.OFP_NO_BUFFER, actions=actions,
data=pkt_lldp.data)
out.serialize()
try:
self.switch_socket.send(out.buf)
except:
if(self.id != None):
print(datetime.datetime.utcnow().strftime('%Y/%m/%d %H:%M:%S') + " : ERROR [" + str(hex(self.id)) + "] --- Broken Pipe (Downstream : LLDP Message)")
else:
print(datetime.datetime.utcnow().strftime('%Y/%m/%d %H:%M:%S') + " : ERROR [" + str(self.id) + "] --- Broken Pipe (Downstream : LLDP Message)")
# self._close()
pass
elif msg_type == ofproto_v1_0.OFPT_STATS_REPLY:
msg = ofproto_v1_0_parser.OFPPortStatsReply.parser(self.datapath, version, msg_type, msg_len, xid, pkt)
if(type(msg) is ofproto_v1_0_parser.OFPFlowStatsReply):
# print(str(self.id) + " : Receive Flow Stats Message")
# print(msg.body)
for flow in msg.body:
db_message = {"switch": hex(self.id),
"message": {
"header": {
"version": msg.version,
"type": msg.msg_type,
"length": msg.msg_len,
"xid": msg.xid
},
"match": {
"wildcards": flow.match.wildcards,
"in_port": flow.match.in_port,
"dl_src": mac.haddr_to_str(flow.match.dl_src),
"dl_dst": mac.haddr_to_str(flow.match.dl_dst),
"dl_vlan": flow.match.dl_vlan,
"dl_vlan_pcp": flow.match.dl_vlan_pcp,
"dl_type": flow.match.dl_type,
"nw_tos": flow.match.nw_tos,
"nw_proto": flow.match.nw_proto,
"nw_src": ip.ipv4_to_str(flow.match.nw_src),
"nw_dst": ip.ipv4_to_str(flow.match.nw_dst),
"tp_src": flow.match.tp_src,
"tp_dst": flow.match.tp_dst
},
"cookie": flow.cookie,
"idle_timeout": flow.idle_timeout,
"hard_timeout": flow.hard_timeout,
"priority": flow.priority,
"flags": msg.flags,
"actions": []
},
"timestamp": datetime.datetime.utcnow()}
for action in flow.actions:
db_message["message"]["actions"].append(vars(action));
try:
self.db.flow_stats.insert_one(db_message)
except:
if(self.id != None):
print(datetime.datetime.utcnow().strftime('%Y/%m/%d %H:%M:%S') + " : ERROR [" + str(hex(self.id)) + "] --- Failed to write data into database")
else:
print(datetime.datetime.utcnow().strftime('%Y/%m/%d %H:%M:%S') + " : ERROR [" + str(self.id) + "] --- Failed to write data into database")
pass
if(type(msg) is ofproto_v1_0_parser.OFPPortStatsReply):
# print(str(self.id) + " : Receive Port Stats Message")
# print(msg.body)
for port in msg.body:
# print(port)
db_message = {"switch": hex(self.id),
"port_no": port.port_no,
"rx_packets": port.rx_packets,
"tx_packets": port.tx_packets,
"rx_bytes": port.rx_bytes,
"tx_bytes": port.tx_bytes,
"rx_dropped": port.rx_dropped,
"tx_dropped": port.tx_dropped,
"rx_errors": port.rx_errors,
"tx_errors": port.tx_errors,
"rx_frame_err": port.rx_frame_err,
"rx_over_err": port.rx_over_err,
"rx_crc_err": port.rx_crc_err,
"collisions": port.collisions,
"timestamp": datetime.datetime.utcnow()}
try:
self.db.port_stats.insert_one(db_message)
except:
if(self.id != None):
print(datetime.datetime.utcnow().strftime('%Y/%m/%d %H:%M:%S') + " : ERROR [" + str(hex(self.id)) + "] --- Failed to write data into database")
else:
print(datetime.datetime.utcnow().strftime('%Y/%m/%d %H:%M:%S') + " : ERROR [" + str(self.id) + "] --- Failed to write data into database")
pass
# Asynchronous messages
elif msg_type == ofproto_v1_0.OFPT_PACKET_IN:
msg = ofproto_v1_0_parser.OFPPacketIn.parser(self.datapath, version, msg_type, msg_len, xid, pkt)
pkt_msg = packet.Packet(msg.data)
if pkt_msg.get_protocol(ethernet.ethernet).ethertype == ETH_TYPE_LLDP:
lldp_msg = pkt_msg.get_protocol(lldp.lldp)
if lldp_msg != None:
if lldp_msg.tlvs[3].tlv_info == "ProxyTopologyMonitorLLDP":
(port,) = struct.unpack('!I', lldp_msg.tlvs[1].port_id)
switch_src = str_to_dpid(lldp_msg.tlvs[0].chassis_id[5:])
# print(str(self.id) + " : Receive Proxy LLDP Packet")
# print(lldp_msg)
# Write to database
try:
self.db.topology.insert_one({"switch_dst": hex(self.id),
"port_dst": port,
"switch_src": hex(switch_src),
"port_src": msg.in_port,
"timestamp": datetime.datetime.utcnow()})
except:
if(self.id != None):
print(datetime.datetime.utcnow().strftime('%Y/%m/%d %H:%M:%S') + " : ERROR [" + str(hex(self.id)) + "] --- Failed to write data into database")
else:
print(datetime.datetime.utcnow().strftime('%Y/%m/%d %H:%M:%S') + " : ERROR [" + str(self.id) + "] --- Failed to write data into database")
return
elif lldp_msg.tlvs[3].tlv_info != "ProxyTopologyMonitorLLDP":
# print(lldp_msg)
# print("Controller LLDP packet")
pass
def test_to_string(self):
chassis_id = lldp.ChassisID(subtype=lldp.ChassisID.SUB_MAC_ADDRESS,
chassis_id=b'\x00\x01\x30\xf9\xad\xa0')
port_id = lldp.PortID(subtype=lldp.PortID.SUB_INTERFACE_NAME,
port_id=b'1/1')
ttl = lldp.TTL(ttl=120)
port_desc = lldp.PortDescription(
port_description=b'Summit300-48-Port 1001\x00')
sys_name = lldp.SystemName(system_name=b'Summit300-48\x00')
sys_desc = lldp.SystemDescription(
system_description=b'Summit300-48 - Version 7.4e.1 (Build 5) '
+ b'by Release_Master 05/27/05 04:53:11\x00')
sys_cap = lldp.SystemCapabilities(
system_cap=0x14,
enabled_cap=0x14)
man_addr = lldp.ManagementAddress(
addr_subtype=0x06, addr=b'\x00\x01\x30\xf9\xad\xa0',
intf_subtype=0x02, intf_num=1001,
oid='')
org_spec = lldp.OrganizationallySpecific(
oui=b'\x00\x12\x0f', subtype=0x02, info=b'\x07\x01\x00')
end = lldp.End()
tlvs = (chassis_id, port_id, ttl, port_desc, sys_name,
sys_desc, sys_cap, man_addr, org_spec, end)
lldp_pkt = lldp.lldp(tlvs)
# ChassisID string
chassis_id_values = {'subtype': lldp.ChassisID.SUB_MAC_ADDRESS,
'chassis_id': b'\x00\x01\x30\xf9\xad\xa0',
'len': chassis_id.len,
'typelen': chassis_id.typelen}
_ch_id_str = ','.join(['%s=%s' % (k, repr(chassis_id_values[k]))
for k, v in inspect.getmembers(chassis_id)
if k in chassis_id_values])
tlv_chassis_id_str = '%s(%s)' % (lldp.ChassisID.__name__, _ch_id_str)
# PortID string
port_id_values = {'subtype': port_id.subtype,
'port_id': port_id.port_id,
'len': port_id.len,
'typelen': port_id.typelen}
_port_id_str = ','.join(['%s=%s' % (k, repr(port_id_values[k]))
for k, v in inspect.getmembers(port_id)
if k in port_id_values])
tlv_port_id_str = '%s(%s)' % (lldp.PortID.__name__, _port_id_str)
# TTL string
ttl_values = {'ttl': ttl.ttl,
'len': ttl.len,
'typelen': ttl.typelen}
_ttl_str = ','.join(['%s=%s' % (k, repr(ttl_values[k]))
for k, v in inspect.getmembers(ttl)
if k in ttl_values])
tlv_ttl_str = '%s(%s)' % (lldp.TTL.__name__, _ttl_str)
# PortDescription string
port_desc_values = {'tlv_info': port_desc.tlv_info,
'len': port_desc.len,
'typelen': port_desc.typelen}
_port_desc_str = ','.join(['%s=%s' % (k, repr(port_desc_values[k]))
for k, v in inspect.getmembers(port_desc)
if k in port_desc_values])
tlv_port_desc_str = '%s(%s)' % (lldp.PortDescription.__name__,
_port_desc_str)
# SystemName string
sys_name_values = {'tlv_info': sys_name.tlv_info,
'len': sys_name.len,
'typelen': sys_name.typelen}
_system_name_str = ','.join(['%s=%s' % (k, repr(sys_name_values[k]))
for k, v in inspect.getmembers(sys_name)
if k in sys_name_values])
tlv_system_name_str = '%s(%s)' % (lldp.SystemName.__name__,
_system_name_str)
# SystemDescription string
sys_desc_values = {'tlv_info': sys_desc.tlv_info,
'len': sys_desc.len,
'typelen': sys_desc.typelen}
_sys_desc_str = ','.join(['%s=%s' % (k, repr(sys_desc_values[k]))
for k, v in inspect.getmembers(sys_desc)
if k in sys_desc_values])
tlv_sys_desc_str = '%s(%s)' % (lldp.SystemDescription.__name__,
_sys_desc_str)
# SystemCapabilities string
sys_cap_values = {'system_cap': 0x14,
'enabled_cap': 0x14,
'len': sys_cap.len,
'typelen': sys_cap.typelen}
_sys_cap_str = ','.join(['%s=%s' % (k, repr(sys_cap_values[k]))
for k, v in inspect.getmembers(sys_cap)
if k in sys_cap_values])
tlv_sys_cap_str = '%s(%s)' % (lldp.SystemCapabilities.__name__,
_sys_cap_str)
# ManagementAddress string
man_addr_values = {'addr_subtype': 0x06,
'addr': b'\x00\x01\x30\xf9\xad\xa0',
'addr_len': man_addr.addr_len,
'intf_subtype': 0x02,
'intf_num': 1001,
'oid': '',
'oid_len': man_addr.oid_len,
'len': man_addr.len,
'typelen': man_addr.typelen}
_man_addr_str = ','.join(['%s=%s' % (k, repr(man_addr_values[k]))
for k, v in inspect.getmembers(man_addr)
if k in man_addr_values])
tlv_man_addr_str = '%s(%s)' % (lldp.ManagementAddress.__name__,
_man_addr_str)
# OrganizationallySpecific string
org_spec_values = {'oui': b'\x00\x12\x0f',
'subtype': 0x02,
'info': b'\x07\x01\x00',
'len': org_spec.len,
'typelen': org_spec.typelen}
_org_spec_str = ','.join(['%s=%s' % (k, repr(org_spec_values[k]))
for k, v in inspect.getmembers(org_spec)
if k in org_spec_values])
tlv_org_spec_str = '%s(%s)' % (lldp.OrganizationallySpecific.__name__,
_org_spec_str)
# End string
end_values = {'len': end.len,
'typelen': end.typelen}
_end_str = ','.join(['%s=%s' % (k, repr(end_values[k]))
for k, v in inspect.getmembers(end)
if k in end_values])
tlv_end_str = '%s(%s)' % (lldp.End.__name__, _end_str)
# tlvs string
_tlvs_str = '(%s, %s, %s, %s, %s, %s, %s, %s, %s, %s)'
tlvs_str = _tlvs_str % (tlv_chassis_id_str,
tlv_port_id_str,
tlv_ttl_str,
tlv_port_desc_str,
tlv_system_name_str,
tlv_sys_desc_str,
tlv_sys_cap_str,
tlv_man_addr_str,
tlv_org_spec_str,
tlv_end_str)
# lldp string
_lldp_str = '%s(tlvs=%s)'
lldp_str = _lldp_str % (lldp.lldp.__name__,
tlvs_str)
eq_(str(lldp_pkt), lldp_str)
eq_(repr(lldp_pkt), lldp_str)