diff --git a/neutron/common/ovn/utils.py b/neutron/common/ovn/utils.py
index 9313a6a8f6e..f862e63d673 100644
--- a/neutron/common/ovn/utils.py
+++ b/neutron/common/ovn/utils.py
@@ -706,10 +706,12 @@ def get_port_subnet_ids(port):
     return [f['subnet_id'] for f in fixed_ips]
 
 
-def get_method_class(method):
-    if not inspect.ismethod(method):
+def get_method_class(method_or_class):
+    if not inspect.ismethod(method_or_class):
+        if inspect.isclass(method_or_class):
+            return method_or_class
         return
-    return method.__self__.__class__
+    return method_or_class.__self__.__class__
 
 
 def ovn_metadata_name(id_):
diff --git a/neutron/server/api_eventlet.py b/neutron/server/api_eventlet.py
index 194514aad19..d7eaa667aa1 100644
--- a/neutron/server/api_eventlet.py
+++ b/neutron/server/api_eventlet.py
@@ -14,12 +14,21 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from neutron_lib.callbacks import events
+from neutron_lib.callbacks import registry
+from neutron_lib.callbacks import resources
 from oslo_config import cfg
 
+from neutron.api import wsgi
 from neutron.common import config
 from neutron.common import profiler
 
 
 def eventlet_api_server():
     profiler.setup('neutron-server', cfg.CONF.host)
-    return config.load_paste_app('neutron')
+    app = config.load_paste_app('neutron')
+    registry.publish(resources.PROCESS, events.BEFORE_SPAWN,
+                     wsgi.WorkerService)
+    registry.publish(resources.PROCESS, events.AFTER_INIT,
+                     wsgi.WorkerService)
+    return app