GETDESC16
status = GETDESC16(rp, &dp->d_status);
len = GETDESC16(rp, &dp->d_len) - ETHERFCSL;
status = GETDESC16(rp, &dp->d_status);
status = GETDESC16(efep->efe_tx_ring, &dp->d_status);
status = GETDESC16(rp, &dp->d_status);