WI_NTXBUF
sc->sc_txqueue = cur = (cur + 1) % WI_NTXBUF;
sc->sc_txalloc = (cur + 1) % WI_NTXBUF;
if (sc->sc_txstarted > WI_NTXBUF)
sc->sc_txstart = (cur + 1) % WI_NTXBUF;
for (i = 0; i < WI_NTXBUF; i++) {
} sc_txd[WI_NTXBUF];