1# Copyright (C) 2014 Nippon Telegraph and Telephone Corporation. 2# 3# Licensed under the Apache License, Version 2.0 (the "License"); 4# you may not use this file except in compliance with the License. 5# You may obtain a copy of the License at 6# 7# http://www.apache.org/licenses/LICENSE-2.0 8# 9# Unless required by applicable law or agreed to in writing, software 10# distributed under the License is distributed on an "AS IS" BASIS, 11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or 12# implied. 13# See the License for the specific language governing permissions and 14# limitations under the License. 15 16""" 17 Defines data types and models required specifically for VPNv6 support. 18""" 19 20import logging 21 22from ryu.lib.packet.bgp import IP6AddrPrefix 23from ryu.lib.packet.bgp import RF_IPv6_VPN 24 25from ryu.services.protocols.bgp.info_base.vpn import VpnDest 26from ryu.services.protocols.bgp.info_base.vpn import VpnPath 27from ryu.services.protocols.bgp.info_base.vpn import VpnTable 28 29LOG = logging.getLogger('bgpspeaker.info_base.vpnv6') 30 31 32class Vpnv6Dest(VpnDest): 33 """VPNv6 destination 34 35 Stores IPv6 paths. 36 """ 37 ROUTE_FAMILY = RF_IPv6_VPN 38 39 40class Vpnv6Table(VpnTable): 41 """Global table to store VPNv6 routing information 42 43 Uses `Vpnv6Dest` to store destination information for each known vpnv6 44 paths. 45 """ 46 ROUTE_FAMILY = RF_IPv6_VPN 47 VPN_DEST_CLASS = Vpnv6Dest 48 49 50class Vpnv6Path(VpnPath): 51 """Represents a way of reaching an VPNv4 destination.""" 52 ROUTE_FAMILY = RF_IPv6_VPN 53 VRF_PATH_CLASS = None # defined in init - anti cyclic import hack 54 NLRI_CLASS = IP6AddrPrefix 55 56 def __init__(self, *args, **kwargs): 57 super(Vpnv6Path, self).__init__(*args, **kwargs) 58 from ryu.services.protocols.bgp.info_base.vrf6 import Vrf6Path 59 self.VRF_PATH_CLASS = Vrf6Path 60