rtw_txring_choose
int rtw_txring_choose(struct rtw_softc *, struct rtw_txsoft_blk **,
if (rtw_txring_choose(sc, tsbp, tdbp, pri) == -1) {
if (rtw_txring_choose(sc, tsbp, tdbp, RTW_TXPRIMD) == -1) {