/*	$NetBSD: key.h,v 1.23 2009/03/14 14:46:11 dsl Exp $	*/
/*	$KAME: key.h,v 1.32 2003/09/07 05:25:20 itojun Exp $	*/

/*
 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the project nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef _NETKEY_KEY_H_
#define _NETKEY_KEY_H_

#ifdef _KERNEL

#if defined(_KERNEL_OPT)
#include "opt_ipsec.h"
#endif

#include <sys/queue.h>

extern struct key_cb key_cb;

extern TAILQ_HEAD(_satailq, secasvar) satailq;
extern TAILQ_HEAD(_sptailq, secpolicy) sptailq;

struct secpolicy;
struct secpolicyindex;
struct ipsecrequest;
struct secasvar;
struct sockaddr;
struct socket;
struct sadb_msg;
struct sadb_x_policy;

extern struct secpolicy *key_allocsp(u_int16_t, struct secpolicyindex *,
	u_int);
extern int key_checkrequest
(struct ipsecrequest *isr, struct secasindex *);
extern struct secasvar *key_allocsa(u_int, const void *, const void *, u_int, 
				    u_int32_t, u_int16_t, u_int16_t);
extern struct secpolicy *key_getspbyid(u_int32_t);
extern void key_freesp(struct secpolicy *);
extern void key_freesav(struct secasvar *);
extern struct secpolicy *key_newsp(u_int32_t);
extern struct secpolicy *key_msg2sp(struct sadb_x_policy *,
	size_t, int *);
extern struct mbuf *key_sp2msg(struct secpolicy *);
extern int key_cmpspidx_exactly
(struct secpolicyindex *, struct secpolicyindex *);
extern int key_cmpspidx_withmask
(struct secpolicyindex *, struct secpolicyindex *);
extern int key_spdacquire(struct secpolicy *);
extern struct mbuf *key_setdumpsp(struct secpolicy *,
	u_int8_t, u_int32_t, u_int32_t);
extern void key_timehandler(void *);
extern void key_randomfill(void *, size_t);
extern void key_freereg(struct socket *);
struct mbuf *key_setdumpsa_spi(u_int32_t);
extern int key_parse(struct mbuf *, struct socket *);
extern void key_init(void);
extern int key_checktunnelsanity(struct secasvar *, u_int,
					void *, void *);
extern void key_sa_recordxfer(struct secasvar *, struct mbuf *);
extern void key_sa_routechange(struct sockaddr *);
extern void key_sa_stir_iv(struct secasvar *);

extern int key_sysctl(int *, u_int, void *, size_t *, void *, size_t);
#ifdef IPSEC_NAT_T
u_int16_t key_portfromsaddr(struct sockaddr *);
#define KEY_PORTFROMSADDR(saddr) key_portfromsaddr((struct sockaddr *)(saddr))
#endif

#endif /* defined(_KERNEL) */
#endif /* !_NETKEY_KEY_H_ */