76 lines
2.4 KiB
Python
76 lines
2.4 KiB
Python
# Copyright 2016 Hewlett Packard Enterprise Development LP
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from neutron_lib.api.definitions import portbindings
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from neutron_lib.callbacks import events
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from neutron_lib.callbacks import registry
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from neutron_lib import constants
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from neutron_lib.plugins.ml2 import ovs_constants as agent_consts
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from neutron_lib.services.trunk import constants as trunk_consts
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from oslo_config import cfg
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from oslo_log import log as logging
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from neutron.services.trunk.drivers import base
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from neutron.services.trunk.drivers.openvswitch import utils
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LOG = logging.getLogger(__name__)
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NAME = 'openvswitch'
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SUPPORTED_INTERFACES = (
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portbindings.VIF_TYPE_OVS,
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portbindings.VIF_TYPE_VHOST_USER,
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)
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SUPPORTED_SEGMENTATION_TYPES = (
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trunk_consts.SEGMENTATION_TYPE_VLAN,
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)
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DRIVER = None
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class OVSDriver(base.DriverBase):
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@property
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def is_loaded(self):
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try:
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return NAME in cfg.CONF.ml2.mechanism_drivers
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except cfg.NoSuchOptError:
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return False
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@classmethod
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def create(cls):
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return OVSDriver(NAME,
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SUPPORTED_INTERFACES,
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SUPPORTED_SEGMENTATION_TYPES,
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constants.AGENT_TYPE_OVS)
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def register():
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"""Register the driver."""
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global DRIVER
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DRIVER = OVSDriver.create()
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# To set the bridge_name in a parent port's vif_details.
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registry.subscribe(vif_details_bridge_name_handler,
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agent_consts.OVS_BRIDGE_NAME,
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events.BEFORE_READ)
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LOG.debug('Open vSwitch trunk driver registered')
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def vif_details_bridge_name_handler(resource, event, set_br_name,
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payload=None):
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"""If port is a trunk port, generate a bridge_name for its vif_details."""
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port = payload.metadata['port']
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if 'trunk_details' in port:
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set_br_name(utils.gen_trunk_br_name(port['trunk_details']['trunk_id']))
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