def unpack(data):
# flags
flags = ord(data[0])
data = data[1:]
# subtype
subtype = ord(data[0])
data = data[1:]
# label
label = LabelStackEntry.unpack(data[:3])
data = data[3:]
if subtype in tunnel_types_to_class:
return tunnel_types_to_class[subtype].unpack(label, flags, data)
else:
return PMSITunnel(subtype, label, flags, data)
def unpack(data):
#flags
flags = ord(data[0])
data = data[1:]
#subtype
subtype = ord(data[0])
data = data[1:]
#label
label = LabelStackEntry.unpack(data[:3])
data = data[3:]
if subtype in tunnel_types_to_class:
return tunnel_types_to_class[subtype].unpack(label, flags, data)
else:
return PMSITunnel(subtype, label, flags, data)
def unpack(data):
rd = RouteDistinguisher.unpack(data[:8])
data = data[8:]
esi = EthernetSegmentIdentifier.unpack(data[:10])
data = data[10:]
etag = EthernetTag.unpack(data[:4])
data = data[4:]
maclen = ord(data[0])
data = data[1:]
mac = MAC.unpack(data[:6])
data = data[6:]
iplen = ord(data[0])
data = data[1:]
if iplen == 0:
ip = None
iplen_byte = 0
elif iplen == 4 * 8:
ip = socket.inet_ntop(socket.AF_INET, data[:4])
iplen_byte = 4
elif iplen == 16 * 8:
ip = socket.inet_ntop(socket.AF_INET6, data[:16])
iplen_byte = 16
else:
raise Exception(
"IP field length is given as %d, but EVPN route currently support only IPv4"
% iplen)
data = data[iplen_byte:]
label = LabelStackEntry.unpack(data[:3])
return EVPNMACAdvertisement(rd, esi, etag, mac, label, ip, maclen)
def unpack(data):
rd = RouteDistinguisher.unpack(data[:8])
data=data[8:]
esi = EthernetSegmentIdentifier.unpack(data[:10])
data=data[10:]
etag = EthernetTag.unpack(data[:4])
data=data[4:]
maclen = ord(data[0])
data=data[1:]
mac = MAC.unpack(data[:6])
data=data[6:]
iplen = ord(data[0])
data=data[1:]
if iplen == 0:
ip = None
iplen_byte=0
elif iplen == 4*8:
ip = socket.inet_ntop( socket.AF_INET, data[:4] )
iplen_byte=4
elif iplen == 16*8:
ip = socket.inet_ntop( socket.AF_INET6, data[:16] )
iplen_byte=16
else:
raise Exception("IP field length is given as %d, but EVPN route currently support only IPv4" % iplen)
data=data[iplen_byte:]
label = LabelStackEntry.unpack(data[:3])
return EVPNMACAdvertisement(rd,esi,etag,mac,label,ip,maclen)