rdr_change_state_t
rdr_change_state_t change_state_data;
*buf_size = sizeof (rdr_change_state_t);
(void) memcpy(bufptr, &change_state_data, sizeof (rdr_change_state_t));
bufptr += sizeof (rdr_change_state_t);
rdr_change_state_t change_state_data;
(void) memcpy(&change_state_data, bufptr, sizeof (rdr_change_state_t));
bufptr += sizeof (rdr_change_state_t);
rdr_change_state_t change_state;