2 Licensed under the Apache License, Version 2.0 (the "License"); you may
3 not use this file except in compliance with the License. You may obtain
4 a copy of the License at
6 http://www.apache.org/licenses/LICENSE-2.0
8 Unless required by applicable law or agreed to in writing, software
9 distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
10 WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
11 License for the specific language governing permissions and limitations
15 Convention for heading levels in Neutron devref:
16 ======= Heading 0 (reserved for the title in a document)
21 (Avoid deeper levels because they do not render well.)
27 The extension manager for ML2 was introduced in Juno (more details
28 can be found in the approved `spec <http://specs.openstack.org/openstack/neutron-specs/specs/juno/neutron-ml2-mechanismdriver-extensions.html>`_). The features allows for extending ML2 resources without
29 actually having to introduce cross cutting concerns to ML2. The
30 mechanism has been applied for a number of use cases, and extensions
31 that currently use this frameworks are available under `ml2/extensions <https://github.com/openstack/neutron/tree/master/neutron/plugins/ml2/extensions>`_.