bridge_pfil
if (bridge_pfil(&m, ifp, src_if, PFIL_IN) != 0)
if (bridge_pfil(&m, ifp, dst_if, PFIL_OUT) != 0)
if (bridge_pfil(&m, NULL, ifp, PFIL_IN) != 0)
if (bridge_pfil(&m, bifp, src_if, PFIL_IN) != 0)
if (bridge_pfil(&m, bifp, NULL, PFIL_OUT) != 0)
if (bridge_pfil(&mc, NULL, dst_if, PFIL_OUT) != 0)
static int bridge_pfil(struct mbuf **, struct ifnet *, struct ifnet *,