Make ServiceBackendPort an atomic struct

This allows different actors to force ownership of it without having to
explicitly unset the other field.

api/openapi-spec/swagger.json

@@ -14052,7 +14052,8 @@
           "type": "integer"
         }
       },
-      "type": "object"
+      "type": "object",
+      "x-kubernetes-map-type": "atomic"
     },
     "io.k8s.api.networking.v1beta1.IPAddress": {
       "description": "IPAddress represents a single IP of a single IP Family. The object is designed to be used by APIs that operate on IP addresses. The object is used by the Service core API for allocation of IP addresses. An IP address can be represented in different formats, to guarantee the uniqueness of the IP, the name of the object is the IP address in canonical format, four decimal digits separated by dots suppressing leading zeros for IPv4 and the representation defined by RFC 5952 for IPv6. Valid: 192.168.1.5 or 2001:db8::1 or 2001:db8:aaaa:bbbb:cccc:dddd:eeee:1 Invalid: 10.01.2.3 or 2001:db8:0:0:0::1",

api/openapi-spec/v3/apis__networking.k8s.io__v1_openapi.json

@@ -799,7 +799,8 @@
             "type": "integer"
           }
         },
-        "type": "object"
+        "type": "object",
+        "x-kubernetes-map-type": "atomic"
       },
       "io.k8s.apimachinery.pkg.apis.meta.v1.APIResource": {
         "description": "APIResource specifies the name of a resource and whether it is namespaced.",

pkg/generated/openapi/zz_generated.openapi.go

@@ -40804,6 +40804,11 @@ func schema_k8sio_api_networking_v1_ServiceBackendPort(ref common.ReferenceCallb
 					},
 				},
 			},
+			VendorExtensible: spec.VendorExtensible{
+				Extensions: spec.Extensions{
+					"x-kubernetes-map-type": "atomic",
+				},
+			},
 		},
 	}
 }

staging/src/k8s.io/api/networking/v1/generated.proto

@@ -541,6 +541,7 @@ message NetworkPolicySpec {
 }
 
 // ServiceBackendPort is the service port being referenced.
+// +structType=atomic
 message ServiceBackendPort {
   // name is the name of the port on the Service.
   // This is a mutually exclusive setting with "Number".

staging/src/k8s.io/api/networking/v1/types.go

@@ -531,6 +531,7 @@ type IngressServiceBackend struct {
 }
 
 // ServiceBackendPort is the service port being referenced.
+// +structType=atomic
 type ServiceBackendPort struct {
 	// name is the name of the port on the Service.
 	// This is a mutually exclusive setting with "Number".

staging/src/k8s.io/client-go/applyconfigurations/internal/internal.go

@@ -10977,6 +10977,7 @@ var schemaYAML = typed.YAMLObject(`types:
     - name: number
       type:
         scalar: numeric
+    elementRelationship: atomic
 - name: io.k8s.api.networking.v1alpha1.IPAddress
   map:
     fields: