96 lines
3.2 KiB
Python
96 lines
3.2 KiB
Python
# Copyright (c) 2013 OpenStack Foundation
|
|
# All Rights Reserved.
|
|
#
|
|
# 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.
|
|
|
|
from neutron_lib import exceptions as n_exc
|
|
from oslo_config import cfg
|
|
from oslo_log import log
|
|
import sqlalchemy as sa
|
|
from sqlalchemy import sql
|
|
|
|
from neutron._i18n import _, _LE
|
|
from neutron.db import model_base
|
|
from neutron.plugins.common import constants as p_const
|
|
from neutron.plugins.ml2.drivers import type_tunnel
|
|
|
|
LOG = log.getLogger(__name__)
|
|
|
|
gre_opts = [
|
|
cfg.ListOpt('tunnel_id_ranges',
|
|
default=[],
|
|
help=_("Comma-separated list of <tun_min>:<tun_max> tuples "
|
|
"enumerating ranges of GRE tunnel IDs that are "
|
|
"available for tenant network allocation"))
|
|
]
|
|
|
|
cfg.CONF.register_opts(gre_opts, "ml2_type_gre")
|
|
|
|
|
|
class GreAllocation(model_base.BASEV2):
|
|
|
|
__tablename__ = 'ml2_gre_allocations'
|
|
|
|
gre_id = sa.Column(sa.Integer, nullable=False, primary_key=True,
|
|
autoincrement=False)
|
|
allocated = sa.Column(sa.Boolean, nullable=False, default=False,
|
|
server_default=sql.false(), index=True)
|
|
|
|
|
|
class GreEndpoints(model_base.BASEV2):
|
|
"""Represents tunnel endpoint in RPC mode."""
|
|
|
|
__tablename__ = 'ml2_gre_endpoints'
|
|
__table_args__ = (
|
|
sa.UniqueConstraint('host',
|
|
name='unique_ml2_gre_endpoints0host'),
|
|
model_base.BASEV2.__table_args__
|
|
)
|
|
ip_address = sa.Column(sa.String(64), primary_key=True)
|
|
host = sa.Column(sa.String(255), nullable=True)
|
|
|
|
def __repr__(self):
|
|
return "<GreTunnelEndpoint(%s)>" % self.ip_address
|
|
|
|
|
|
class GreTypeDriver(type_tunnel.EndpointTunnelTypeDriver):
|
|
|
|
def __init__(self):
|
|
super(GreTypeDriver, self).__init__(
|
|
GreAllocation, GreEndpoints)
|
|
|
|
def get_type(self):
|
|
return p_const.TYPE_GRE
|
|
|
|
def initialize(self):
|
|
try:
|
|
self._initialize(cfg.CONF.ml2_type_gre.tunnel_id_ranges)
|
|
except n_exc.NetworkTunnelRangeError:
|
|
LOG.exception(_LE("Failed to parse tunnel_id_ranges. "
|
|
"Service terminated!"))
|
|
raise SystemExit()
|
|
|
|
def get_endpoints(self):
|
|
"""Get every gre endpoints from database."""
|
|
gre_endpoints = self._get_endpoints()
|
|
return [{'ip_address': gre_endpoint.ip_address,
|
|
'host': gre_endpoint.host}
|
|
for gre_endpoint in gre_endpoints]
|
|
|
|
def add_endpoint(self, ip, host):
|
|
return self._add_endpoint(ip, host)
|
|
|
|
def get_mtu(self, physical_network=None):
|
|
mtu = super(GreTypeDriver, self).get_mtu(physical_network)
|
|
return mtu - p_const.GRE_ENCAP_OVERHEAD if mtu else 0
|