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

17 files changed, 472 insertions, 5 deletions

diff --git a/neutron/conf/policies/port.py b/neutron/conf/policies/port.py
index 5783f080bb..bce04da941 100644
--- a/neutron/conf/policies/port.py
+++ b/neutron/conf/policies/port.py
@@ -270,6 +270,15 @@ rules = [
             deprecated_reason=DEPRECATED_REASON,
             deprecated_since=versionutils.deprecated.WALLABY)
     ),
+    policy.DocumentedRuleDefault(
+        name='create_port:hints',
+        check_str=base.ADMIN,
+        scope_types=['project'],
+        description=(
+            'Specify ``hints`` attribute when creating a port'
+        ),
+        operations=ACTION_POST,
+    ),
 
     policy.DocumentedRuleDefault(
         name='get_port',
@@ -350,6 +359,13 @@ rules = [
             deprecated_reason=DEPRECATED_REASON,
             deprecated_since=versionutils.deprecated.WALLABY)
     ),
+    policy.DocumentedRuleDefault(
+        name='get_port:hints',
+        check_str=base.ADMIN,
+        scope_types=['project'],
+        description='Get ``hints`` attribute of a port',
+        operations=ACTION_GET,
+    ),
     # TODO(amotoki): Add get_port:binding:vnic_type
     # TODO(amotoki): Add get_port:binding:data_plane_status
 
@@ -592,6 +608,13 @@ rules = [
             deprecated_reason=DEPRECATED_REASON,
             deprecated_since=versionutils.deprecated.WALLABY)
     ),
+    policy.DocumentedRuleDefault(
+        name='update_port:hints',
+        check_str=base.ADMIN,
+        scope_types=['project'],
+        description='Update ``hints`` attribute of a port',
+        operations=ACTION_PUT,
+    ),
 
     policy.DocumentedRuleDefault(
         name='delete_port',
diff --git a/neutron/db/migration/alembic_migrations/versions/2023.2/expand/6f1145bff34c_port_hints.py b/neutron/db/migration/alembic_migrations/versions/2023.2/expand/6f1145bff34c_port_hints.py
new file mode 100644
index 0000000000..b82d3de956
--- /dev/null
+++ b/neutron/db/migration/alembic_migrations/versions/2023.2/expand/6f1145bff34c_port_hints.py
@@ -0,0 +1,45 @@
+# Copyright 2023 OpenStack Foundation
+#
+#    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 alembic import op
+from neutron_lib.db import constants as db_const
+import sqlalchemy as sa
+
+
+"""port_hints
+
+Revision ID: 6f1145bff34c
+Revises: 93f394357a27
+Create Date: 2023-01-01 00:00:00.000000
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = '6f1145bff34c'
+down_revision = '93f394357a27'
+
+
+def upgrade():
+    op.create_table(
+        'porthints',
+        sa.Column(
+            'port_id',
+            sa.String(length=db_const.UUID_FIELD_SIZE),
+            sa.ForeignKey('ports.id', ondelete='CASCADE'),
+            primary_key=True),
+        sa.Column('hints',
+            sa.String(4095),
+            nullable=False),
+    )
diff --git a/neutron/db/migration/alembic_migrations/versions/EXPAND_HEAD b/neutron/db/migration/alembic_migrations/versions/EXPAND_HEAD
index 88323e719e..8e31a8bd56 100644
--- a/neutron/db/migration/alembic_migrations/versions/EXPAND_HEAD
+++ b/neutron/db/migration/alembic_migrations/versions/EXPAND_HEAD
@@ -1 +1 @@
-93f394357a27
+6f1145bff34c
diff --git a/neutron/db/models/port_hints.py b/neutron/db/models/port_hints.py
new file mode 100644
index 0000000000..8ef171bba5
--- /dev/null
+++ b/neutron/db/models/port_hints.py
@@ -0,0 +1,35 @@
+# 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.db import constants as db_const
+from neutron_lib.db import model_base
+import sqlalchemy as sa
+
+from neutron.db import models_v2
+
+
+class PortHints(model_base.BASEV2):
+    __tablename__ = 'porthints'
+    port_id = sa.Column(
+        sa.String(db_const.UUID_FIELD_SIZE),
+        sa.ForeignKey('ports.id', ondelete='CASCADE'),
+        primary_key=True)
+    hints = sa.Column('hints', sa.String(length=4095), nullable=False)
+    port = sa.orm.relationship(
+        models_v2.Port,
+        load_on_pending=True,
+        backref=sa.orm.backref(
+            'hints', uselist=False, cascade='delete', lazy='subquery'))
+
+    revises_on_change = ('port', )
diff --git a/neutron/db/port_hints_db.py b/neutron/db/port_hints_db.py
new file mode 100644
index 0000000000..0b45b413fb
--- /dev/null
+++ b/neutron/db/port_hints_db.py
@@ -0,0 +1,53 @@
+# 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 oslo_serialization import jsonutils
+
+from neutron.objects.port.extensions import port_hints as phints_obj
+
+
+class PortHintsMixin(object):
+    """Mixin class to add hints to a port"""
+
+    def _process_create_port(self, context, data, result):
+        if not data.get(phints_def.HINTS):
+            result[phints_def.HINTS] = None
+            return
+
+        obj = phints_obj.PortHints(
+            context, port_id=result['id'],
+            hints=data[phints_def.HINTS])
+        obj.create()
+        result[phints_def.HINTS] = data[phints_def.HINTS]
+
+    def _process_update_port(self, context, data, result):
+        obj = phints_obj.PortHints.get_object(
+            context, port_id=result['id'])
+
+        if obj:
+            if data[phints_def.HINTS]:
+                obj.hints = data[phints_def.HINTS]
+                obj.update()
+            else:
+                obj.delete()
+            result[phints_def.HINTS] = data[phints_def.HINTS]
+        else:
+            self._process_create_port(context, data, result)
+
+    def _extend_port_dict(self, port_db, result):
+        if port_db.hints:
+            result[phints_def.HINTS] = jsonutils.loads(port_db.hints.hints)
+        else:
+            result[phints_def.HINTS] = None
diff --git a/neutron/extensions/port_hints.py b/neutron/extensions/port_hints.py
new file mode 100644
index 0000000000..74e9e6007c
--- /dev/null
+++ b/neutron/extensions/port_hints.py
@@ -0,0 +1,20 @@
+# 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.api import extensions as api_extensions
+
+
+class Port_hints(api_extensions.APIExtensionDescriptor):
+    api_definition = phints_def
diff --git a/neutron/objects/port/extensions/port_hints.py b/neutron/objects/port/extensions/port_hints.py
new file mode 100644
index 0000000000..a9fd1c793f
--- /dev/null
+++ b/neutron/objects/port/extensions/port_hints.py
@@ -0,0 +1,53 @@
+# 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.objects import common_types
+
+from neutron.db.models import port_hints
+from neutron.objects import base
+
+
+@base.NeutronObjectRegistry.register
+class PortHints(base.NeutronDbObject):
+    # Version 1.0: Initial version
+    VERSION = '1.0'
+
+    db_model = port_hints.PortHints
+
+    primary_keys = ['port_id']
+
+    fields = {
+        'port_id': common_types.UUIDField(),
+        'hints': common_types.DictOfMiscValuesField(),
+    }
+
+    foreign_keys = {'Port': {'port_id': 'id'}}
+
+    @classmethod
+    def modify_fields_to_db(cls, fields):
+        result = super(PortHints, cls).modify_fields_to_db(fields)
+        if 'hints' in result:
+            # dump field into string, set '' if empty '{}' or None
+            result['hints'] = (
+                cls.filter_to_json_str(result['hints'], default=''))
+        return result
+
+    @classmethod
+    def modify_fields_from_db(cls, db_obj):
+        fields = super(PortHints, cls).modify_fields_from_db(db_obj)
+        if 'hints' in fields:
+            # load string from DB into dict, set None if hints is ''
+            fields['hints'] = (
+                cls.load_json_from_str(fields['hints']))
+        return fields
diff --git a/neutron/objects/ports.py b/neutron/objects/ports.py
index 462d86944c..e9fd61b38e 100644
--- a/neutron/objects/ports.py
+++ b/neutron/objects/ports.py
@@ -336,7 +336,8 @@ class Port(base.NeutronDbObject):
     # Version 1.5: Added qos_network_policy_id field
     # Version 1.6: Added numa_affinity_policy field
     # Version 1.7: Added port_device field
-    VERSION = '1.7'
+    # Version 1.8: Added hints field
+    VERSION = '1.8'
 
     db_model = models_v2.Port
 
@@ -370,6 +371,9 @@ class Port(base.NeutronDbObject):
         'fixed_ips': obj_fields.ListOfObjectsField(
             'IPAllocation', nullable=True
         ),
+        'hints': obj_fields.ObjectField(
+            'PortHints', nullable=True
+        ),
         # TODO(ihrachys): consider converting to boolean
         'security': obj_fields.ObjectField(
             'PortSecurity', nullable=True
@@ -407,6 +411,7 @@ class Port(base.NeutronDbObject):
         'distributed_bindings',
         'dns',
         'fixed_ips',
+        'hints',
         'numa_affinity_policy',
         'qos_policy_id',
         'qos_network_policy_id',
@@ -610,6 +615,8 @@ class Port(base.NeutronDbObject):
             primitive.pop('numa_affinity_policy', None)
         if _target_version < (1, 7):
             primitive.pop('device_profile', None)
+        if _target_version < (1, 8):
+            primitive.pop('hints', None)
 
     @classmethod
     @db_api.CONTEXT_READER
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)
diff --git a/neutron/tests/unit/conf/policies/test_port.py b/neutron/tests/unit/conf/policies/test_port.py
index c50d3feb10..8248960abb 100644
--- a/neutron/tests/unit/conf/policies/test_port.py
+++ b/neutron/tests/unit/conf/policies/test_port.py
@@ -532,6 +532,16 @@ class AdminTests(PortAPITestCase):
                            'create_port:allowed_address_pairs:ip_address',
                            self.alt_target))
 
+    def test_create_port_with_hints(self):
+        self.assertTrue(
+            policy.enforce(self.context,
+                           'create_port:hints',
+                           self.target))
+        self.assertTrue(
+            policy.enforce(self.context,
+                           'create_port:hints',
+                           self.alt_target))
+
     def test_get_port(self):
         self.assertTrue(
             policy.enforce(self.context, 'get_port', self.target))
@@ -578,6 +588,14 @@ class AdminTests(PortAPITestCase):
             policy.enforce(
                 self.context, 'get_port:resource_request', self.alt_target))
 
+    def test_get_port_hints(self):
+        self.assertTrue(
+            policy.enforce(
+                self.context, 'get_port:hints', self.target))
+        self.assertTrue(
+            policy.enforce(
+                self.context, 'get_port:hints', self.alt_target))
+
     def test_update_port(self):
         self.assertTrue(
             policy.enforce(self.context, 'update_port', self.target))
@@ -701,6 +719,16 @@ class AdminTests(PortAPITestCase):
                            'update_port:data_plane_status',
                            self.alt_target))
 
+    def test_update_port_hints(self):
+        self.assertTrue(
+            policy.enforce(self.context,
+                           'update_port:hints',
+                           self.target))
+        self.assertTrue(
+            policy.enforce(self.context,
+                           'update_port:hints',
+                           self.alt_target))
+
     def test_delete_port(self):
         self.assertTrue(
             policy.enforce(self.context, 'delete_port', self.target))
@@ -850,6 +878,18 @@ class ProjectMemberTests(AdminTests):
             self.context, 'create_port:allowed_address_pairs:ip_address',
             self.alt_target)
 
+    def test_create_port_with_hints(self):
+        self.assertRaises(
+            base_policy.PolicyNotAuthorized,
+            policy.enforce,
+            self.context, 'create_port:hints',
+            self.target)
+        self.assertRaises(
+            base_policy.PolicyNotAuthorized,
+            policy.enforce,
+            self.context, 'create_port:hints',
+            self.alt_target)
+
     def test_get_port(self):
         self.assertTrue(
             policy.enforce(self.context, 'get_port', self.target))
@@ -907,6 +947,16 @@ class ProjectMemberTests(AdminTests):
             policy.enforce, self.context, 'get_port:resource_request',
             self.alt_target)
 
+    def test_get_port_hints(self):
+        self.assertRaises(
+            base_policy.PolicyNotAuthorized,
+            policy.enforce, self.context, 'get_port:hints',
+            self.target)
+        self.assertRaises(
+            base_policy.PolicyNotAuthorized,
+            policy.enforce, self.context, 'get_port:hints',
+            self.alt_target)
+
     def test_update_port(self):
         self.assertTrue(
             policy.enforce(self.context, 'update_port', self.target))
@@ -1053,6 +1103,16 @@ class ProjectMemberTests(AdminTests):
             policy.enforce,
             self.context, 'update_port:data_plane_status', self.alt_target)
 
+    def test_update_port_hints(self):
+        self.assertRaises(
+            base_policy.PolicyNotAuthorized,
+            policy.enforce,
+            self.context, 'update_port:hints', self.target)
+        self.assertRaises(
+            base_policy.PolicyNotAuthorized,
+            policy.enforce,
+            self.context, 'update_port:hints', self.alt_target)
+
     def test_delete_port(self):
         self.assertTrue(
             policy.enforce(self.context, 'delete_port', self.target))
diff --git a/neutron/tests/unit/db/test_db_base_plugin_v2.py b/neutron/tests/unit/db/test_db_base_plugin_v2.py
index c4a1dce9ae..eb80348fbb 100644
--- a/neutron/tests/unit/db/test_db_base_plugin_v2.py
+++ b/neutron/tests/unit/db/test_db_base_plugin_v2.py
@@ -517,7 +517,7 @@ class NeutronDbPluginV2TestCase(testlib_api.WebTestCase):
                     'mac_address', 'name', 'fixed_ips',
                     'tenant_id', 'device_owner', 'security_groups',
                     'propagate_uplink_status', 'numa_affinity_policy',
-                    'device_profile') + (arg_list or ())):
+                    'device_profile', 'hints') + (arg_list or ())):
             # Arg must be present
             if arg in kwargs:
                 data['port'][arg] = kwargs[arg]
diff --git a/neutron/tests/unit/extensions/test_port_hints.py b/neutron/tests/unit/extensions/test_port_hints.py
new file mode 100644
index 0000000000..9aa9fb1462
--- /dev/null
+++ b/neutron/tests/unit/extensions/test_port_hints.py
@@ -0,0 +1,85 @@
+# 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.
+
+import ddt
+from neutron_lib.api.definitions import port_hints as phints_def
+from neutron_lib.db import api as db_api
+
+from neutron.db import db_base_plugin_v2
+from neutron.db import port_hints_db as phints_db
+from neutron.tests.unit.db import test_db_base_plugin_v2
+
+HINTS_LIST = [
+    None,
+    {'openvswitch': {'other_config': {'tx-steering': 'hash'}}},
+]
+
+
+class PortHintsExtensionTestPlugin(
+        db_base_plugin_v2.NeutronDbPluginV2,
+        phints_db.PortHintsMixin):
+    """Test plugin to mixin the port hints extension."""
+
+    supported_extension_aliases = [phints_def.ALIAS]
+
+    def create_port(self, context, port):
+        with db_api.CONTEXT_WRITER.using(context):
+            new_port = super(PortHintsExtensionTestPlugin,
+                             self).create_port(context, port)
+            self._process_create_port(context, port['port'], new_port)
+        return new_port
+
+    def update_port(self, context, id, port):
+        with db_api.CONTEXT_WRITER.using(context):
+            updated_port = super(
+                PortHintsExtensionTestPlugin,
+                self).update_port(context, id, port)
+            self._process_update_port(context, port['port'], updated_port)
+        return updated_port
+
+
+@ddt.ddt
+class PortHintsExtensionTestCase(
+         test_db_base_plugin_v2.NeutronDbPluginV2TestCase):
+    """Test API extension port-hints attributes."""
+
+    def setUp(self, *args):
+        plugin = ('neutron.tests.unit.extensions.test_port_hints.'
+                  'PortHintsExtensionTestPlugin')
+        super(PortHintsExtensionTestCase, self).setUp(plugin=plugin)
+
+    def _create_and_check_port_hints(self, hints):
+        keys = [('name', 'name_1'),
+                ('admin_state_up', True),
+                ('status', self.port_create_status),
+                ('hints', hints)]
+        with self.port(is_admin=True, name='name_1', hints=hints) as port:
+            for k, v in keys:
+                self.assertEqual(v, port['port'][k])
+        return port
+
+    def _update_and_check_port_hints(self, port, hints):
+        data = {'port': {'hints': hints}}
+        req = self.new_update_request(
+            'ports', data, port['port']['id'], as_admin=True)
+        res = self.deserialize(self.fmt, req.get_response(self.api))
+        self.assertEqual(
+            hints, res['port']['hints'])
+
+    @ddt.data(*HINTS_LIST)
+    def test_create_and_update_port_hints(
+            self, hints):
+        port = self._create_and_check_port_hints(hints)
+        for new_hints in HINTS_LIST:
+            self._update_and_check_port_hints(port, new_hints)
diff --git a/neutron/tests/unit/objects/port/extensions/test_port_hints.py b/neutron/tests/unit/objects/port/extensions/test_port_hints.py
new file mode 100644
index 0000000000..2efd985388
--- /dev/null
+++ b/neutron/tests/unit/objects/port/extensions/test_port_hints.py
@@ -0,0 +1,33 @@
+# 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.objects.port.extensions import port_hints
+from neutron.tests.unit.objects import test_base as obj_test_base
+from neutron.tests.unit import testlib_api
+
+
+class PortHintsIfaceObjectTestCase(obj_test_base.BaseObjectIfaceTestCase):
+
+    _test_class = port_hints.PortHints
+
+
+class PortHintsDbObjectTestCase(
+        obj_test_base.BaseDbObjectTestCase, testlib_api.SqlTestCase):
+
+    _test_class = port_hints.PortHints
+
+    def setUp(self):
+        super(PortHintsDbObjectTestCase, self).setUp()
+        self.update_obj_fields(
+            {'port_id': lambda: self._create_test_port_id()})
diff --git a/neutron/tests/unit/objects/test_objects.py b/neutron/tests/unit/objects/test_objects.py
index d6a431e108..d198bae2b7 100644
--- a/neutron/tests/unit/objects/test_objects.py
+++ b/neutron/tests/unit/objects/test_objects.py
@@ -73,8 +73,9 @@ object_data = {
     'NetworkSegment': '1.0-57b7f2960971e3b95ded20cbc59244a8',
     'NetworkSegmentRange': '1.0-bdec1fffc9058ea676089b1f2f2b3cf3',
     'NetworkSubnetLock': '1.0-140de39d4b86ae346dc3d70b885bea53',
-    'Port': '1.7-d8c1cfe42cfa3719a5d810eeab79e006',
+    'Port': '1.8-1aa850ab5529128de07e82c6fb75fcb5',
     'PortDeviceProfile': '1.0-b98c7083cc3e93d176fd7a91ae13af32',
+    'PortHints': '1.0-9ebf6e12fa427809476a92c7432352b8',
     'PortNumaAffinityPolicy': '1.0-38fcea43e7bfb2536461f3d053c43aa3',
     'PortBinding': '1.0-3306deeaa6deb01e33af06777d48d578',
     'PortBindingLevel': '1.1-50d47f63218f87581b6cd9a62db574e5',
diff --git a/neutron/tests/unit/objects/test_ports.py b/neutron/tests/unit/objects/test_ports.py
index b01fb998ed..f38077d8d0 100644
--- a/neutron/tests/unit/objects/test_ports.py
+++ b/neutron/tests/unit/objects/test_ports.py
@@ -529,6 +529,12 @@ class PortDbObjectTestCase(obj_test_base.BaseDbObjectTestCase,
         self.assertNotIn('device_profile',
                          port_v1_6['versioned_object.data'])
 
+    def test_v1_8_to_v1_7_drops_hints(self):
+        port_new = self._create_test_port()
+        port_v1_7 = port_new.obj_to_primitive(target_version='1.7')
+        self.assertNotIn('hints',
+                         port_v1_7['versioned_object.data'])
+
     def test_get_ports_ids_by_security_groups_except_router(self):
         sg_id = self._create_test_security_group_id()
         filter_owner = constants.ROUTER_INTERFACE_OWNERS_SNAT
diff --git a/requirements.txt b/requirements.txt
index 2b2d62fbb9..73796c43eb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,7 +20,7 @@ Jinja2>=2.10 # BSD License (3 clause)
 keystonemiddleware>=5.1.0 # Apache-2.0
 netaddr>=0.7.18 # BSD
 netifaces>=0.10.4 # MIT
-neutron-lib>=3.4.0 # Apache-2.0
+neutron-lib>=3.5.0 # Apache-2.0
 python-neutronclient>=7.8.0 # Apache-2.0
 tenacity>=6.0.0 # Apache-2.0
 SQLAlchemy>=1.4.23 # MIT
diff --git a/setup.cfg b/setup.cfg
index da9e0c0949..66edcd4575 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -125,6 +125,7 @@ neutron.ml2.extension_drivers =
     tag_ports_during_bulk_creation = neutron.plugins.ml2.extensions.tag_ports_during_bulk_creation:TagPortsDuringBulkCreationExtensionDriver
     subnet_dns_publish_fixed_ip = neutron.plugins.ml2.extensions.subnet_dns_publish_fixed_ip:SubnetDNSPublishFixedIPExtensionDriver
     dns_domain_keywords = neutron.plugins.ml2.extensions.dns_domain_keywords:DnsDomainKeywordsExtensionDriver
+    port_hints = neutron.plugins.ml2.extensions.port_hints:PortHintsExtensionDriver
 neutron.ipam_drivers =
     fake = neutron.tests.unit.ipam.fake_driver:FakeDriver
     internal = neutron.ipam.drivers.neutrondb_ipam.driver:NeutronDbPool