IB/core: Enable getting an object type from a given uobject

Enable getting an object type from a given uobject, the type is saved
upon tree merging and is returned as part of some helper function.
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

drivers/infiniband/core/rdma_core.h

@@ -118,11 +118,6 @@ void release_ufile_idr_uobject(struct ib_uverbs_file *ufile);
  * Depending on ID the slot pointer in the radix tree points at one of these
  * structs.
  */
-struct uverbs_api_object {
-	const struct uverbs_obj_type *type_attrs;
-	const struct uverbs_obj_type_class *type_class;
-	u8 disabled:1;
-};
 
 struct uverbs_api_ioctl_method {
 	int(__rcu *handler)(struct uverbs_attr_bundle *attrs);

drivers/infiniband/core/uverbs_uapi.c

@@ -184,6 +184,7 @@ static int uapi_merge_obj_tree(struct uverbs_api *uapi,
 		if (WARN_ON(obj_elm->type_attrs))
 			return -EINVAL;
 
+		obj_elm->id = obj->id;
 		obj_elm->type_attrs = obj->type_attrs;
 		obj_elm->type_class = obj->type_attrs->type_class;
 		/*

include/rdma/uverbs_std_types.h

@@ -182,5 +182,17 @@ static inline void ib_set_flow(struct ib_uobject *uobj, struct ib_flow *ibflow,
 	uflow->resources = uflow_res;
 }
 
+struct uverbs_api_object {
+	const struct uverbs_obj_type *type_attrs;
+	const struct uverbs_obj_type_class *type_class;
+	u8 disabled:1;
+	u32 id;
+};
+
+static inline u32 uobj_get_object_id(struct ib_uobject *uobj)
+{
+	return uobj->uapi_object->id;
+}
+
 #endif