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# Copyright (C) 2017 Nippon Telegraph and Telephone Corporation.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
Defines data types and models required specifically for
VPNv6 Flow Specification support.
"""
import logging
from ryu.lib.packet.bgp import FlowSpecVPNv6NLRI
from ryu.lib.packet.bgp import RF_VPNv6_FLOWSPEC
from ryu.services.protocols.bgp.info_base.vpn import VpnDest
from ryu.services.protocols.bgp.info_base.vpn import VpnPath
from ryu.services.protocols.bgp.info_base.vpn import VpnTable
LOG = logging.getLogger('bgpspeaker.info_base.vpnv6fs')
class VPNv6FlowSpecDest(VpnDest):
"""VPNv6 Flow Specification Destination
Store Flow Specification Paths.
"""
ROUTE_FAMILY = RF_VPNv6_FLOWSPEC
class VPNv6FlowSpecTable(VpnTable):
"""Global table to store VPNv6 Flow Specification routing information.
Uses `VPNv6FlowSpecDest` to store destination information for each known
Flow Specification paths.
"""
ROUTE_FAMILY = RF_VPNv6_FLOWSPEC
VPN_DEST_CLASS = VPNv6FlowSpecDest
class VPNv6FlowSpecPath(VpnPath):
"""Represents a way of reaching an VPNv6 Flow Specification destination."""
ROUTE_FAMILY = RF_VPNv6_FLOWSPEC
VRF_PATH_CLASS = None # defined in init - anti cyclic import hack
NLRI_CLASS = FlowSpecVPNv6NLRI
def __init__(self, *args, **kwargs):
# Set dummy IP address.
kwargs['nexthop'] = '::'
super(VPNv6FlowSpecPath, self).__init__(*args, **kwargs)
from ryu.services.protocols.bgp.info_base.vrf6fs import (
Vrf6FlowSpecPath)
self.VRF_PATH_CLASS = Vrf6FlowSpecPath
# Because the IPv6 Flow Specification does not require nexthop,
# initialize with None.
self._nexthop = None
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