oce_pkt_alloc
pkt = oce_pkt_alloc(sc, OCE_MAX_TX_SIZE, OCE_MAX_TX_ELEMENTS,
pkt = oce_pkt_alloc(sc, OCE_RX_BUF_SIZE, 1, OCE_RX_BUF_SIZE);
oce_pkt_alloc(struct oce_softc *, size_t size, int nsegs,