port-hints: api extension

api extension
db model
db migration
ovo (including changes affecting push rpc)
extension driver
policies

To enable this:

* neutron-db-manage upgrade 6f1145bff34c
* ml2_conf.ini:
  [ml2]
  extension_drivers += port_hints

This patch also bumps neutron-lib requirement to 3.5.0.

Change-Id: I80816618285d742775bc0534510c0f874f84ed2e
Partial-Bug: #1990842
Related-Change (spec): https://review.opendev.org/c/openstack/neutron-specs/+/862133
Related-Change (n-lib api-def): https://review.opendev.org/c/openstack/neutron-lib/+/870080

1 files changed, 45 insertions, 0 deletions

diff --git a/neutron/plugins/ml2/extensions/port_hints.py b/neutron/plugins/ml2/extensions/port_hints.py
new file mode 100644
index 0000000000..1e4ba654f4
--- /dev/null
+++ b/neutron/plugins/ml2/extensions/port_hints.py
@@ -0,0 +1,45 @@
+# Copyright 2023 Ericsson Software Technology
+#
+# 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.api.definitions import port_hints as phints_def
+from neutron_lib.plugins.ml2 import api
+from oslo_log import log as logging
+
+from neutron.db import port_hints_db
+
+
+LOG = logging.getLogger(__name__)
+
+
+class PortHintsExtensionDriver(
+        api.ExtensionDriver, port_hints_db.PortHintsMixin):
+
+    _supported_extension_alias = phints_def.ALIAS
+
+    def initialize(self):
+        LOG.info('PortHintsExtensionDriver initialization complete')
+
+    @property
+    def extension_alias(self):
+        return self._supported_extension_alias
+
+    def process_create_port(self, context, data, result):
+        self._process_create_port(context, data, result)
+
+    def process_update_port(self, context, data, result):
+        if phints_def.HINTS in data:
+            self._process_update_port(context, data, result)
+
+    def extend_port_dict(self, session, port_db, result):
+        self._extend_port_dict(port_db, result)