struct sadb_msg;
extern void pfkey_sadump(struct sadb_msg *);
extern void pfkey_spdump(struct sadb_msg *);
struct sockaddr;
struct sadb_alg;
int ipsec_check_keylen(u_int, u_int, u_int);
int ipsec_check_keylen2(u_int, u_int, u_int);
int ipsec_get_keylen(u_int, u_int, struct sadb_alg *);
u_int pfkey_set_softrate(u_int, u_int);
u_int pfkey_get_softrate(u_int);
int pfkey_send_getspi(int, u_int, u_int, struct sockaddr *, struct sockaddr *,
u_int32_t, u_int32_t, u_int32_t, u_int32_t);
int pfkey_send_update(int, u_int, u_int, struct sockaddr *, struct sockaddr *,
u_int32_t, u_int32_t, u_int, caddr_t, u_int, u_int, u_int, u_int,
u_int, u_int32_t, u_int64_t, u_int64_t, u_int64_t, u_int32_t);
int pfkey_send_add(int, u_int, u_int, struct sockaddr *, struct sockaddr *,
u_int32_t, u_int32_t, u_int, caddr_t, u_int, u_int, u_int, u_int,
u_int, u_int32_t, u_int64_t, u_int64_t, u_int64_t, u_int32_t);
int pfkey_send_delete(int, u_int, u_int, struct sockaddr *, struct sockaddr *,
u_int32_t);
int pfkey_send_delete_all(int, u_int, u_int, struct sockaddr *,
struct sockaddr *);
int pfkey_send_get(int, u_int, u_int, struct sockaddr *, struct sockaddr *,
u_int32_t);
int pfkey_send_register(int, u_int);
int pfkey_recv_register(int);
int pfkey_set_supported(struct sadb_msg *, int);
int pfkey_send_flush(int, u_int);
int pfkey_send_dump(int, u_int);
int pfkey_send_promisc_toggle(int, int);
int pfkey_send_spdadd(int, struct sockaddr *, u_int, struct sockaddr *, u_int,
u_int, caddr_t, int, u_int32_t);
int pfkey_send_spdadd2(int, struct sockaddr *, u_int, struct sockaddr *, u_int,
u_int, u_int64_t, u_int64_t, caddr_t, int, u_int32_t);
int pfkey_send_spdupdate(int, struct sockaddr *, u_int, struct sockaddr *,
u_int, u_int, caddr_t, int, u_int32_t);
int pfkey_send_spdupdate2(int, struct sockaddr *, u_int, struct sockaddr *,
u_int, u_int, u_int64_t, u_int64_t, caddr_t, int, u_int32_t);
int pfkey_send_spddelete(int, struct sockaddr *, u_int, struct sockaddr *,
u_int, u_int, caddr_t, int, u_int32_t);
int pfkey_send_spddelete2(int, u_int32_t);
int pfkey_send_spdget(int, u_int32_t);
int pfkey_send_spdsetidx(int, struct sockaddr *, u_int, struct sockaddr *,
u_int, u_int, caddr_t, int, u_int32_t);
int pfkey_send_spdflush(int);
int pfkey_send_spddump(int);
int pfkey_open(void);
void pfkey_close(int);
struct sadb_msg *pfkey_recv(int);
int pfkey_send(int, struct sadb_msg *, int);
int pfkey_align(struct sadb_msg *, caddr_t *);
int pfkey_check(caddr_t *);