BWFM_NUM_TX_PKTIDS
sc->sc_tx_pkts.npkt = BWFM_NUM_TX_PKTIDS;
sc->sc_tx_pkts.pkts = kmem_zalloc(BWFM_NUM_TX_PKTIDS
for (i = 0; i < BWFM_NUM_TX_PKTIDS; i++)