mac_perim_enter_by_linkid
if ((err = mac_perim_enter_by_linkid(id1, &mph)) != 0) {
err = mac_perim_enter_by_linkid(linkid, &mph);
err = mac_perim_enter_by_linkid(linkid, &mph);
err = mac_perim_enter_by_linkid(linkid, &mph);
err = mac_perim_enter_by_linkid(linkid, &mph);
extern int mac_perim_enter_by_linkid(datalink_id_t, mac_perim_handle_t *);