- (attr)->attr_length = udi_snprintf((char *)(attr)->attr_value, (maxlen), (fmt) ,## v )
+ (attr)->attr_length = udi_snprintf((char *)(attr)->attr_value, (maxlen), (fmt) ,## __VA_ARGS__ )
+
+extern udi_usage_ind_op_t ne2k_usage_ind;
+extern udi_enumerate_req_op_t ne2k_enumerate_req;
+extern udi_devmgmt_req_op_t ne2k_devmgmt_req;
+extern udi_final_cleanup_req_op_t ne2k_final_cleanup_req;