a01b7125cd
This patch makes necessary changes to ML2 type drivers and plugin manager for network segment range extension support when it is loaded. When the network segment range extension is not loaded, no impact to the current flow. When the extension is loaded, - populating a range that is managed from the configuration file [1]_, such as "VLAN IDs", "VXLAN VNI IDs", "GRE tunnel IDs", "Geneve VNI IDs" to the network segment range DB table as a "default" and "shared" entry to maintain backward compatibility; - reloading the "default" segment ranges when Neutron server starts/restarts; - creating a set of "default" network segment ranges out of the ML2-config-file-defined ranges [1]_ and the segment allocation operations are always retrieving the information from the DB to have the network segment ranges fully administered via API; - when a tenant allocates a segment, it will first allocate from an available segment range assigned to the tenant, and then a shared range if no tenant specific allocation is possible. [1] /etc/neutron/plugins/ml2/ml2_conf.ini Co-authored-by: Allain Legacy <Allain.legacy@windriver.com> Partially-implements: blueprint network-segment-range-management Change-Id: I522940fc4d054f5eec1110eb2c424e32e8ae6bad
77 lines
2.4 KiB
Python
77 lines
2.4 KiB
Python
# Copyright (c) 2013 OpenStack Foundation
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# All Rights Reserved.
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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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#
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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 import constants as p_const
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from neutron_lib import exceptions as exc
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from neutron_lib.plugins.ml2 import api
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from oslo_log import log
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from neutron._i18n import _
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LOG = log.getLogger(__name__)
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class LocalTypeDriver(api.ML2TypeDriver):
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"""Manage state for local networks with ML2.
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The LocalTypeDriver implements the 'local' network_type. Local
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network segments provide connectivity between VMs and other
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devices running on the same node, provided that a common local
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network bridging technology is available to those devices. Local
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network segments do not provide any connectivity between nodes.
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"""
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def __init__(self):
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LOG.info("ML2 LocalTypeDriver initialization complete")
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def get_type(self):
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return p_const.TYPE_LOCAL
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def initialize(self):
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pass
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def initialize_network_segment_range_support(self):
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pass
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def update_network_segment_range_allocations(self):
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pass
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def get_network_segment_ranges(self):
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pass
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def is_partial_segment(self, segment):
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return False
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def validate_provider_segment(self, segment):
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for key, value in segment.items():
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if value and key != api.NETWORK_TYPE:
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msg = _("%s prohibited for local provider network") % key
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raise exc.InvalidInput(error_message=msg)
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def reserve_provider_segment(self, context, segment, filters=None):
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# No resources to reserve
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return segment
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def allocate_tenant_segment(self, context, filters=None):
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# No resources to allocate
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return {api.NETWORK_TYPE: p_const.TYPE_LOCAL}
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def release_segment(self, context, segment):
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# No resources to release
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pass
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def get_mtu(self, physical_network=None):
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pass
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