npf_mbufops_t
npfk_create(int flags, const npf_mbufops_t *mbufops,
const npf_mbufops_t *nb_mops;
const npf_mbufops_t * mbufops;
npf_t * npfk_create(int, const npf_mbufops_t *, const npf_ifops_t *, void *);
const npf_mbufops_t npftest_mbufops = {
extern const npf_mbufops_t npftest_mbufops;