adv_period_offset_to_sdtr
adv_period_offset_to_sdtr(adv, &spi->sync_period,
sdtr_data = adv_period_offset_to_sdtr(adv, &period,
adv_period_offset_to_sdtr(adv, &period, &offset, tid_no);
u_int8_t adv_period_offset_to_sdtr(struct adv_softc *adv, u_int *period,