OpenStack Networking (Neutron)
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# 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
# 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 constants as p_const
from neutron_lib import exceptions as n_exc
from oslo_config import cfg
from oslo_log import log
from neutron.conf.plugins.ml2.drivers import driver_type
from neutron.db.models.plugins.ml2 import gre_allocation_endpoints as \
from neutron.objects.plugins.ml2 import greallocation as gre_obj
from neutron.plugins.ml2.drivers import type_tunnel
LOG = log.getLogger(__name__)
class GreTypeDriver(type_tunnel.EndpointTunnelTypeDriver):
def __init__(self):
super(GreTypeDriver, self).__init__(
gre_obj.GreAllocation, gre_obj.GreEndpoint)
self.model_segmentation_id = gre_alloc_model.GreAllocation.gre_id
def get_type(self):
return p_const.TYPE_GRE
def initialize(self):
except n_exc.NetworkTunnelRangeError:
LOG.exception("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,
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