getsadbpolicy
static int getsadbpolicy(caddr_t *, int *, int, struct ph2handle *);
if (getsadbpolicy(&policy, &policylen, SADB_X_SPDUPDATE, iph2)) {
if (getsadbpolicy(&policy, &policylen, SADB_X_SPDADD, iph2)) {
if (getsadbpolicy(&policy, &policylen, SADB_X_SPDDELETE, iph2)) {