pf_test
int pf_test(sa_family_t, int, int, struct ifnet *, struct mbuf **, struct inpcb *,
if (pf_test(AF_INET6, PF_OUT, PFIL_FWD | PF_PFIL_NOREFRAGMENT,
action = pf_test(af, dir, pflags, ifp, &msyn, inp,
if (pf_test(AF_INET, PF_OUT, PFIL_FWD, ifp, &m0, inp,
chk = pf_test(AF_INET, PF_IN, flags, ifp, m, inp, NULL);
chk = pf_test(AF_INET, PF_OUT, flags, ifp, m, inp, NULL);
chk = pf_test(AF_INET6, PF_IN, flags, (*m)->m_flags & M_LOOP ? V_loif : ifp,
chk = pf_test(AF_INET6, PF_OUT, flags, ifp, m, inp, NULL);