-int supplicant_interface_scan(struct supplicant_interface *interface);
-int supplicant_interface_disconnect(struct supplicant_interface *interface);
+int supplicant_interface_scan(struct supplicant_interface *interface,
+ supplicant_interface_scan_callback callback,
+ void *user_data);
+int supplicant_interface_disconnect(struct supplicant_interface *interface,
+ supplicant_interface_disconnect_callback callback,
+ void *user_data);