overlay_targ_pkt32_t
overlay_targ_pkt32_t *pkt32;
if (ddi_copyin(ubuf, pkt, sizeof (overlay_targ_pkt32_t),
pkt32 = (overlay_targ_pkt32_t *)pkt;
overlay_targ_pkt32_t *pkt32 = buf;
if (ddi_copyout(buf, ubuf, sizeof (overlay_targ_pkt32_t),