BMAC_RXBUFS
sc->sc_rxdbdma = dbdma_alloc(sc->sc_dmat, BMAC_RXBUFS + 1);
bzero(sc->sc_rxcmd, (BMAC_RXBUFS + 1) * sizeof(dbdma_command_t));
for (i = 0; i < BMAC_RXBUFS; i++) {
for (n = 0; n < BMAC_RXBUFS; n++, i++) {
if (i == BMAC_RXBUFS)
#define BMAC_BUFSZ ((BMAC_RXBUFS + BMAC_TXBUFS + 2) * BMAC_BUFLEN)