Add 'fip-port-details' to OVN ML2 supported extensions

This extension will add information about the attached port in the
floating IP dictionary.

This extension is not mandatory but very handy because sometime this
extra information avoids to make a second call to Neutron.

Related-Bug: #1861876

Change-Id: I0175a2d00256e6d904cbcf25ad4a08aa825a9e18

neutron/common/ovn/extensions.py

@@ -21,6 +21,7 @@ ML2_SUPPORTED_API_EXTENSIONS_OVN_L3 = [
     'router',
     'extraroute',
     'ext-gw-mode',
+    'fip-port-details',
     'pagination',
     'sorting',
     'project-id',

neutron/services/ovn_l3/plugin.py

@@ -35,6 +35,7 @@ from oslo_utils import excutils
 from neutron.common.ovn import constants as ovn_const
 from neutron.common.ovn import extensions
 from neutron.common.ovn import utils
+from neutron.db import l3_fip_port_details
 from neutron.db import ovn_revision_numbers_db as db_rev
 from neutron.plugins.ml2.drivers.ovn.mech_driver.ovsdb import impl_idl_ovn
 from neutron.plugins.ml2.drivers.ovn.mech_driver.ovsdb import ovn_client
@@ -48,7 +49,8 @@ LOG = log.getLogger(__name__)
 class OVNL3RouterPlugin(service_base.ServicePluginBase,
                         extraroute_db.ExtraRoute_dbonly_mixin,
                         l3_gwmode_db.L3_NAT_db_mixin,
-                        dns_db.DNSDbMixin):
+                        dns_db.DNSDbMixin,
+                        l3_fip_port_details.Fip_port_details_db_mixin):
     """Implementation of the OVN L3 Router Service Plugin.
 
     This class implements a L3 service plugin that provides

neutron/tests/unit/fake_resources.py

@@ -618,6 +618,7 @@ class FakeFloatingIp(object):
             'id': 'fip-id-' + fake_uuid,
             'tenant_id': '',
             'fixed_ip_address': '10.0.0.10',
+            'fixed_port': FakePort.create_one_port(),
             'floating_ip_address': '172.21.0.100',
             'router_id': 'router-id',
             'port_id': 'port_id',