Merge "Add VlanQinqDriverError exception"

neutron_lib/exceptions/vlanqinq.py

@@ -0,0 +1,21 @@
+# Copyright (c) 2024 Red Hat, Inc.
+#
+#    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._i18n import _
+from neutron_lib import exceptions
+
+
+class VlanQinqDriverError(exceptions.BadRequest):
+    """Vlan QinQ not supported by all mechanism drivers."""
+    message = _("Backend does not support VLAN QinQ.")