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# $Id: dtp.py 23 2006-11-08 15:45:33Z dugsong $
# -*- coding: utf-8 -*-
"""Dynamic Trunking Protocol."""
from __future__ import absolute_import
import struct
from . import dpkt
class DTP(dpkt.Packet):
"""Dynamic Trunking Protocol.
TODO: Longer class information....
Attributes:
__hdr__: Header fields of DTP.
TODO.
"""
__hdr__ = (
('v', 'B', 0),
) # rest is TLVs
def unpack(self, buf):
dpkt.Packet.unpack(self, buf)
buf = self.data
tvs = []
while buf:
t, l = struct.unpack('>HH', buf[:4])
v, buf = buf[4:4 + l], buf[4 + l:]
tvs.append((t, v))
self.data = tvs
TRUNK_NAME = 0x01
MAC_ADDR = 0x04
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