Removing old, dead, KAME IPsec files as part of the move to the

new FAST_IPSEC based IPsec stack.

Approved by: re
Reviewed by: bz

1 files changed, 0 insertions, 7647 deletions

diff --git a/sys/netkey/key.c b/sys/netkey/key.c
deleted file mode 100644
index d41ad96..0000000
--- a/sys/netkey/key.c
+++ /dev/null
@@ -1,7647 +0,0 @@
-/*	$KAME: key.c,v 1.308 2003/09/07 20:35:59 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.
- */
-
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-/*
- * This code is referd to RFC 2367
- */
-
-#include "opt_inet.h"
-#include "opt_inet6.h"
-#include "opt_ipsec.h"
-
-#include <sys/types.h>
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/kernel.h>
-#include <sys/mbuf.h>
-#include <sys/domain.h>
-#include <sys/protosw.h>
-#include <sys/malloc.h>
-#include <sys/socket.h>
-#include <sys/socketvar.h>
-#include <sys/sysctl.h>
-#include <sys/errno.h>
-#include <sys/proc.h>
-#include <sys/queue.h>
-#include <sys/syslog.h>
-
-#include <net/if.h>
-#include <net/route.h>
-#include <net/raw_cb.h>
-
-#include <netinet/in.h>
-#include <netinet/in_systm.h>
-#include <netinet/ip.h>
-#include <netinet/in_var.h>
-
-#ifdef INET6
-#include <netinet/ip6.h>
-#include <netinet6/in6_var.h>
-#include <netinet6/ip6_var.h>
-#include <netinet6/scope6_var.h>
-#endif /* INET6 */
-
-#ifdef INET
-#include <netinet/in_pcb.h>
-#endif
-#ifdef INET6
-#include <netinet6/in6_pcb.h>
-#endif /* INET6 */
-
-#include <net/pfkeyv2.h>
-#include <netkey/keydb.h>
-#include <netkey/key.h>
-#include <netkey/keysock.h>
-#include <netkey/key_debug.h>
-
-#include <netinet6/ipsec.h>
-#ifdef INET6
-#include <netinet6/ipsec6.h>
-#endif
-#include <netinet6/ah.h>
-#ifdef INET6
-#include <netinet6/ah6.h>
-#endif
-#ifdef IPSEC_ESP
-#include <netinet6/esp.h>
-#ifdef INET6
-#include <netinet6/esp6.h>
-#endif
-#endif
-#include <netinet6/ipcomp.h>
-#ifdef INET6
-#include <netinet6/ipcomp6.h>
-#endif
-
-#include <machine/stdarg.h>
-
-/* randomness */
-#include <sys/random.h>
-
-#ifndef satosin
-#define satosin(s) ((struct sockaddr_in *)s)
-#endif
-
-#define FULLMASK	0xff
-
-/*
- * Note on SA reference counting:
- * - SAs that are not in DEAD state will have (total external reference + 1)
- *   following value in reference count field.  they cannot be freed and are
- *   referenced from SA header.
- * - SAs that are in DEAD state will have (total external reference)
- *   in reference count field.  they are ready to be freed.  reference from
- *   SA header will be removed in keydb_delsecasvar(), when the reference count
- *   field hits 0 (= no external reference other than from SA header.
- */
-
-u_int32_t key_debug_level = 0;
-static u_int key_spi_trycnt = 1000;
-static u_int32_t key_spi_minval = 0x100;
-static u_int32_t key_spi_maxval = 0x0fffffff;	/* XXX */
-static u_int key_larval_lifetime = 30;	/* interval to expire acquiring, 30(s)*/
-static int key_blockacq_count = 10;	/* counter for blocking SADB_ACQUIRE.*/
-static int key_blockacq_lifetime = 20;	/* lifetime for blocking SADB_ACQUIRE.*/
-static int key_preferred_oldsa = 1;	/* preferred old sa rather than new sa.*/
-
-static u_int32_t acq_seq = 0;
-
-struct _satailq satailq;		/* list of all SAD entry */
-struct _sptailq sptailq;		/* SPD table + pcb */
-static LIST_HEAD(_sptree, secpolicy) sptree[IPSEC_DIR_MAX];	/* SPD table */
-static LIST_HEAD(_sahtree, secashead) sahtree;			/* SAD */
-static LIST_HEAD(_regtree, secreg) regtree[SADB_SATYPE_MAX + 1];
-							/* registed list */
-
-#define SPIHASHSIZE	128
-#define	SPIHASH(x)	(((x) ^ ((x) >> 16)) % SPIHASHSIZE)
-static LIST_HEAD(_spihash, secasvar) spihash[SPIHASHSIZE];
-
-#ifndef IPSEC_NONBLOCK_ACQUIRE
-static LIST_HEAD(_acqtree, secacq) acqtree;		/* acquiring list */
-#endif
-static LIST_HEAD(_spacqtree, secspacq) spacqtree;	/* SP acquiring list */
-
-struct key_cb key_cb;
-
-/* search order for SAs */
-static const u_int saorder_state_valid_prefer_old[] = {
-	SADB_SASTATE_DYING, SADB_SASTATE_MATURE,
-};
-static const u_int saorder_state_valid_prefer_new[] = {
-	SADB_SASTATE_MATURE, SADB_SASTATE_DYING,
-};
-static const u_int saorder_state_alive[] = {
-	/* except DEAD */
-	SADB_SASTATE_MATURE, SADB_SASTATE_DYING, SADB_SASTATE_LARVAL
-};
-static const u_int saorder_state_any[] = {
-	SADB_SASTATE_MATURE, SADB_SASTATE_DYING,
-	SADB_SASTATE_LARVAL, SADB_SASTATE_DEAD
-};
-
-static const int minsize[] = {
-	sizeof(struct sadb_msg),	/* SADB_EXT_RESERVED */
-	sizeof(struct sadb_sa),		/* SADB_EXT_SA */
-	sizeof(struct sadb_lifetime),	/* SADB_EXT_LIFETIME_CURRENT */
-	sizeof(struct sadb_lifetime),	/* SADB_EXT_LIFETIME_HARD */
-	sizeof(struct sadb_lifetime),	/* SADB_EXT_LIFETIME_SOFT */
-	sizeof(struct sadb_address),	/* SADB_EXT_ADDRESS_SRC */
-	sizeof(struct sadb_address),	/* SADB_EXT_ADDRESS_DST */
-	sizeof(struct sadb_address),	/* SADB_EXT_ADDRESS_PROXY */
-	sizeof(struct sadb_key),	/* SADB_EXT_KEY_AUTH */
-	sizeof(struct sadb_key),	/* SADB_EXT_KEY_ENCRYPT */
-	sizeof(struct sadb_ident),	/* SADB_EXT_IDENTITY_SRC */
-	sizeof(struct sadb_ident),	/* SADB_EXT_IDENTITY_DST */
-	sizeof(struct sadb_sens),	/* SADB_EXT_SENSITIVITY */
-	sizeof(struct sadb_prop),	/* SADB_EXT_PROPOSAL */
-	sizeof(struct sadb_supported),	/* SADB_EXT_SUPPORTED_AUTH */
-	sizeof(struct sadb_supported),	/* SADB_EXT_SUPPORTED_ENCRYPT */
-	sizeof(struct sadb_spirange),	/* SADB_EXT_SPIRANGE */
-	0,				/* SADB_X_EXT_KMPRIVATE */
-	sizeof(struct sadb_x_policy),	/* SADB_X_EXT_POLICY */
-	sizeof(struct sadb_x_sa2),	/* SADB_X_SA2 */
-};
-static const int maxsize[] = {
-	sizeof(struct sadb_msg),	/* SADB_EXT_RESERVED */
-	sizeof(struct sadb_sa),		/* SADB_EXT_SA */
-	sizeof(struct sadb_lifetime),	/* SADB_EXT_LIFETIME_CURRENT */
-	sizeof(struct sadb_lifetime),	/* SADB_EXT_LIFETIME_HARD */
-	sizeof(struct sadb_lifetime),	/* SADB_EXT_LIFETIME_SOFT */
-	0,				/* SADB_EXT_ADDRESS_SRC */
-	0,				/* SADB_EXT_ADDRESS_DST */
-	0,				/* SADB_EXT_ADDRESS_PROXY */
-	0,				/* SADB_EXT_KEY_AUTH */
-	0,				/* SADB_EXT_KEY_ENCRYPT */
-	0,				/* SADB_EXT_IDENTITY_SRC */
-	0,				/* SADB_EXT_IDENTITY_DST */
-	0,				/* SADB_EXT_SENSITIVITY */
-	0,				/* SADB_EXT_PROPOSAL */
-	0,				/* SADB_EXT_SUPPORTED_AUTH */
-	0,				/* SADB_EXT_SUPPORTED_ENCRYPT */
-	sizeof(struct sadb_spirange),	/* SADB_EXT_SPIRANGE */
-	0,				/* SADB_X_EXT_KMPRIVATE */
-	0,				/* SADB_X_EXT_POLICY */
-	sizeof(struct sadb_x_sa2),	/* SADB_X_SA2 */
-};
-
-static int ipsec_esp_keymin = 256;
-#ifdef IPSEC_ESP
-static int ipsec_esp_auth = 0;
-#endif
-static int ipsec_ah_keymin = 128;
-
-SYSCTL_DECL(_net_key);
-
-SYSCTL_INT(_net_key, KEYCTL_DEBUG_LEVEL,	debug,	CTLFLAG_RW, \
-	&key_debug_level,	0,	"");
-
-/* max count of trial for the decision of spi value */
-SYSCTL_INT(_net_key, KEYCTL_SPI_TRY,		spi_trycnt,	CTLFLAG_RW, \
-	&key_spi_trycnt,	0,	"");
-
-/* minimum spi value to allocate automatically. */
-SYSCTL_INT(_net_key, KEYCTL_SPI_MIN_VALUE,	spi_minval,	CTLFLAG_RW, \
-	&key_spi_minval,	0,	"");
-
-/* maximun spi value to allocate automatically. */
-SYSCTL_INT(_net_key, KEYCTL_SPI_MAX_VALUE,	spi_maxval,	CTLFLAG_RW, \
-	&key_spi_maxval,	0,	"");
-
-/* lifetime for larval SA */
-SYSCTL_INT(_net_key, KEYCTL_LARVAL_LIFETIME,	larval_lifetime, CTLFLAG_RW, \
-	&key_larval_lifetime,	0,	"");
-
-/* counter for blocking to send SADB_ACQUIRE to IKEd */
-SYSCTL_INT(_net_key, KEYCTL_BLOCKACQ_COUNT,	blockacq_count,	CTLFLAG_RW, \
-	&key_blockacq_count,	0,	"");
-
-/* lifetime for blocking to send SADB_ACQUIRE to IKEd */
-SYSCTL_INT(_net_key, KEYCTL_BLOCKACQ_LIFETIME,	blockacq_lifetime, CTLFLAG_RW, \
-	&key_blockacq_lifetime,	0,	"");
-
-#ifdef IPSEC_ESP
-/* ESP auth */
-SYSCTL_INT(_net_key, KEYCTL_ESP_AUTH,	esp_auth, CTLFLAG_RW, \
-	&ipsec_esp_auth,	0,	"ESP auth");
-#endif
-
-/* minimum ESP key length */
-SYSCTL_INT(_net_key, KEYCTL_ESP_KEYMIN,	esp_keymin, CTLFLAG_RW, \
-	&ipsec_esp_keymin,	0,	"");
-
-/* minimum AH key length */
-SYSCTL_INT(_net_key, KEYCTL_AH_KEYMIN,	ah_keymin, CTLFLAG_RW, \
-	&ipsec_ah_keymin,	0,	"");
-
-/* perfered old SA rather than new SA */
-SYSCTL_INT(_net_key, KEYCTL_PREFERED_OLDSA,	preferred_oldsa, CTLFLAG_RW,\
-	&key_preferred_oldsa,	0,	"");
-
-#define __LIST_CHAINED(elm) \
-	(!((elm)->chain.le_next == NULL && (elm)->chain.le_prev == NULL))
-#define LIST_INSERT_TAIL(head, elm, type, field) \
-do {\
-	struct type *curelm = LIST_FIRST(head); \
-	if (curelm == NULL) {\
-		LIST_INSERT_HEAD(head, elm, field); \
-	} else { \
-		while (LIST_NEXT(curelm, field)) \
-			curelm = LIST_NEXT(curelm, field);\
-		LIST_INSERT_AFTER(curelm, elm, field);\
-	}\
-} while (/*CONSTCOND*/ 0)
-
-#define KEY_CHKSASTATE(head, sav, name) \
-do { \
-	if ((head) != (sav)) {						\
-		ipseclog((LOG_DEBUG, "%s: state mismatched (TREE=%u SA=%u)\n", \
-			(name), (head), (sav)));			\
-		continue;						\
-	}								\
-} while (/*CONSTCOND*/ 0)
-
-#define KEY_CHKSPDIR(head, sp, name) \
-do { \
-	if ((head) != (sp)) {						\
-		ipseclog((LOG_DEBUG, "%s: direction mismatched (TREE=%u SP=%u), " \
-			"anyway continue.\n",				\
-			(name), (head), (sp)));				\
-	}								\
-} while (/*CONSTCOND*/ 0)
-
-#if 1
-#define KMALLOC(p, t, n)                                                     \
-	((p) = (t) malloc((unsigned long)(n), M_SECA, M_NOWAIT))
-#define KFREE(p)                                                             \
-	free((caddr_t)(p), M_SECA)
-#else
-#define KMALLOC(p, t, n) \
-do { \
-	((p) = (t)malloc((unsigned long)(n), M_SECA, M_NOWAIT));             \
-	printf("%s %d: %p <- KMALLOC(%s, %d)\n",                             \
-		__FILE__, __LINE__, (p), #t, n);                             \
-} while (/*CONSTCOND*/ 0)
-
-#define KFREE(p)                                                             \
-	do {                                                                 \
-		printf("%s %d: %p -> KFREE()\n", __FILE__, __LINE__, (p));   \
-		free((caddr_t)(p), M_SECA);                                  \
-	} while (/*CONSTCOND*/ 0)
-#endif
-
-/*
- * set parameters into secpolicyindex buffer.
- * Must allocate secpolicyindex buffer passed to this function.
- */
-#define KEY_SETSECSPIDX(s, d, ps, pd, ulp, idx) \
-do { \
-	bzero((idx), sizeof(struct secpolicyindex));                             \
-	(idx)->prefs = (ps);                                                 \
-	(idx)->prefd = (pd);                                                 \
-	(idx)->ul_proto = (ulp);                                             \
-	bcopy((s), &(idx)->src, ((struct sockaddr *)(s))->sa_len);           \
-	bcopy((d), &(idx)->dst, ((struct sockaddr *)(d))->sa_len);           \
-} while (/*CONSTCOND*/ 0)
-
-/*
- * set parameters into secasindex buffer.
- * Must allocate secasindex buffer before calling this function.
- */
-#define KEY_SETSECASIDX(p, m, r, s, d, idx) \
-do { \
-	bzero((idx), sizeof(struct secasindex));                             \
-	(idx)->proto = (p);                                                  \
-	(idx)->mode = (m);                                                   \
-	(idx)->reqid = (r);                                                  \
-	bcopy((s), &(idx)->src, ((struct sockaddr *)(s))->sa_len);           \
-	bcopy((d), &(idx)->dst, ((struct sockaddr *)(d))->sa_len);           \
-} while (/*CONSTCOND*/ 0)
-
-/* key statistics */
-struct _keystat {
-	u_long getspi_count; /* the avarage of count to try to get new SPI */
-} keystat;
-
-struct sadb_msghdr {
-	struct sadb_msg *msg;
-	struct sadb_ext *ext[SADB_EXT_MAX + 1];
-	int extoff[SADB_EXT_MAX + 1];
-	int extlen[SADB_EXT_MAX + 1];
-};
-
-static struct secasvar *key_allocsa_policy(struct secasindex *);
-static struct secasvar *key_do_allocsa_policy(struct secashead *, u_int);
-static void key_delsav(struct secasvar *);
-static void key_delsp(struct secpolicy *);
-static struct secpolicy *key_getsp(struct secpolicyindex *, int);
-static struct secpolicy *key_getspbyid(u_int32_t);
-static u_int32_t key_newreqid(void);
-static struct mbuf *key_gather_mbuf(struct mbuf *,
-	const struct sadb_msghdr *, int, int, ...);
-static int key_spdadd(struct socket *, struct mbuf *,
-	const struct sadb_msghdr *);
-static int key_spddelete(struct socket *, struct mbuf *,
-	const struct sadb_msghdr *);
-static int key_spddelete2(struct socket *, struct mbuf *,
-	const struct sadb_msghdr *);
-static int key_spdget(struct socket *, struct mbuf *,
-	const struct sadb_msghdr *);
-static int key_spdflush(struct socket *, struct mbuf *,
-	const struct sadb_msghdr *);
-static int key_spddump(struct socket *, struct mbuf *,
-	const struct sadb_msghdr *);
-static struct mbuf *key_setdumpsp(struct secpolicy *,
-	u_int8_t, u_int32_t, u_int32_t);
-static u_int key_getspreqmsglen(struct secpolicy *);
-static int key_spdexpire(struct secpolicy *);
-static struct secashead *key_newsah(struct secasindex *);
-static void key_delsah(struct secashead *);
-static struct secasvar *key_newsav(struct mbuf *,
-	const struct sadb_msghdr *, struct secashead *, int *);
-static struct secashead *key_getsah(struct secasindex *);
-static struct secasvar *key_checkspidup(struct secasindex *, u_int32_t);
-static void key_setspi(struct secasvar *, u_int32_t);
-static struct secasvar *key_getsavbyspi(struct secashead *, u_int32_t);
-static int key_setsaval(struct secasvar *, struct mbuf *,
-	const struct sadb_msghdr *);
-static int key_mature(struct secasvar *);
-static struct mbuf *key_setdumpsa(struct secasvar *, u_int8_t,
-	u_int8_t, u_int32_t, u_int32_t);
-static struct mbuf *key_setsadbmsg(u_int8_t, u_int16_t, u_int8_t,
-	u_int32_t, pid_t, u_int16_t);
-static struct mbuf *key_setsadbsa(struct secasvar *);
-static struct mbuf *key_setsadbaddr(u_int16_t,
-	struct sockaddr *, u_int8_t, u_int16_t);
-#if 0
-static struct mbuf *key_setsadbident(u_int16_t, u_int16_t, caddr_t,
-	int, u_int64_t);
-#endif
-static struct mbuf *key_setsadbxsa2(u_int8_t, u_int32_t, u_int32_t);
-static struct mbuf *key_setsadblifetime(u_int16_t, u_int32_t,
-	u_int64_t, u_int64_t, u_int64_t);
-static struct mbuf *key_setsadbxpolicy(u_int16_t, u_int8_t,
-	u_int32_t);
-static void *key_newbuf(const void *, u_int);
-static int key_ismyaddr(struct sockaddr *);
-#ifdef INET6
-static int key_ismyaddr6(struct sockaddr_in6 *);
-#endif
-
-/* flags for key_cmpsaidx() */
-#define CMP_HEAD	1	/* protocol, addresses. */
-#define CMP_MODE_REQID	2	/* additionally HEAD, reqid, mode. */
-#define CMP_REQID	3	/* additionally HEAD, reqid. not used */
-#define CMP_EXACTLY	4	/* all elements. */
-static int key_cmpsaidx(struct secasindex *, struct secasindex *, int);
-
-static int key_sockaddrcmp(struct sockaddr *, struct sockaddr *, int);
-static int key_bbcmp(caddr_t, caddr_t, u_int);
-static u_long key_random(void);
-static u_int16_t key_satype2proto(u_int8_t);
-static u_int8_t key_proto2satype(u_int16_t);
-
-static int key_getspi(struct socket *, struct mbuf *,
-	const struct sadb_msghdr *);
-static u_int32_t key_do_getnewspi(struct sadb_spirange *,
-					struct secasindex *);
-static int key_update(struct socket *, struct mbuf *,
-	const struct sadb_msghdr *);
-#ifdef IPSEC_DOSEQCHECK
-static struct secasvar *key_getsavbyseq(struct secashead *, u_int32_t);
-#endif
-static int key_add(struct socket *, struct mbuf *,
-	const struct sadb_msghdr *);
-static int key_setident(struct secashead *, struct mbuf *,
-	const struct sadb_msghdr *);
-static struct mbuf *key_getmsgbuf_x1(struct mbuf *,
-	const struct sadb_msghdr *);
-static int key_delete(struct socket *, struct mbuf *,
-	const struct sadb_msghdr *);
-static int key_get(struct socket *, struct mbuf *,
-	const struct sadb_msghdr *);
-
-static void key_getcomb_setlifetime(struct sadb_comb *);
-#ifdef IPSEC_ESP
-static struct mbuf *key_getcomb_esp(void);
-#endif
-static struct mbuf *key_getcomb_ah(void);
-static struct mbuf *key_getcomb_ipcomp(void);
-static struct mbuf *key_getprop(const struct secasindex *);
-
-static int key_acquire(struct secasindex *, struct secpolicy *);
-#ifndef IPSEC_NONBLOCK_ACQUIRE
-static struct secacq *key_newacq(struct secasindex *);
-static struct secacq *key_getacq(struct secasindex *);
-static struct secacq *key_getacqbyseq(u_int32_t);
-#endif
-static struct secspacq *key_newspacq(struct secpolicyindex *);
-static struct secspacq *key_getspacq(struct secpolicyindex *);
-static int key_acquire2(struct socket *, struct mbuf *,
-	const struct sadb_msghdr *);
-static int key_register(struct socket *, struct mbuf *,
-	const struct sadb_msghdr *);
-static int key_expire(struct secasvar *);
-static int key_flush(struct socket *, struct mbuf *,
-	const struct sadb_msghdr *);
-static int key_dump(struct socket *, struct mbuf *,
-	const struct sadb_msghdr *);
-static int key_promisc(struct socket *, struct mbuf *,
-	const struct sadb_msghdr *);
-static int key_senderror(struct socket *, struct mbuf *, int);
-static int key_validate_ext(struct sadb_ext *, int);
-static int key_align(struct mbuf *, struct sadb_msghdr *);
-#if 0
-static const char *key_getfqdn(void);
-static const char *key_getuserfqdn(void);
-#endif
-static void key_sa_chgstate(struct secasvar *, u_int8_t);
-static void key_sp_dead(struct secpolicy *);
-static void key_sp_unlink(struct secpolicy *);
-static struct mbuf *key_alloc_mbuf(int);
-static struct callout key_timehandler_ch;
-
-/* %%% IPsec policy management */
-/*
- * allocating a SP for OUTBOUND or INBOUND packet.
- * Must call key_freesp() later.
- * OUT:	NULL:	not found
- *	others:	found and return the pointer.
- */
-struct secpolicy *
-key_allocsp(tag, spidx, dir)
-	u_int16_t tag;
-	struct secpolicyindex *spidx;
-	u_int dir;
-{
-	struct secpolicy *sp;
-	int s;
-
-	/* check direction */
-	switch (dir) {
-	case IPSEC_DIR_INBOUND:
-	case IPSEC_DIR_OUTBOUND:
-		break;
-	default:
-		panic("key_allocsp: Invalid direction is passed.");
-	}
-
-	/* get a SP entry */
-	s = splnet();	/*called from softclock()*/
-	if (spidx) {
-		KEYDEBUG(KEYDEBUG_IPSEC_DATA,
-			printf("*** objects\n");
-			kdebug_secpolicyindex(spidx));
-	}
-
-	LIST_FOREACH(sp, &sptree[dir], chain) {
-		if (sp->state == IPSEC_SPSTATE_DEAD)
-			continue;
-		if (sp->spidx) {
-			if (!spidx)
-				continue;
-
-			KEYDEBUG(KEYDEBUG_IPSEC_DATA,
-				printf("*** in SPD\n");
-				kdebug_secpolicyindex(sp->spidx));
-
-			if (key_cmpspidx_withmask(sp->spidx, spidx))
-				goto found;
-		}
-	}
-
-	splx(s);
-	return NULL;
-
-found:
-	/* sanity check */
-	KEY_CHKSPDIR(sp->dir, dir, "key_allocsp");
-
-	/* found a SPD entry */
-	sp->lastused = time_second;
-	sp->refcnt++;
-	splx(s);
-	KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
-		printf("DP key_allocsp cause refcnt++:%d SP:%p\n",
-			sp->refcnt, sp));
-
-	return sp;
-}
-
-/*
- * return a policy that matches this particular inbound packet.
- * XXX slow
- */
-struct secpolicy *
-key_gettunnel(osrc, odst, isrc, idst)
-	struct sockaddr *osrc, *odst, *isrc, *idst;
-{
-	struct secpolicy *sp;
-	const int dir = IPSEC_DIR_INBOUND;
-	int s;
-	struct ipsecrequest *r1, *r2, *p;
-	struct sockaddr *os, *od, *is, *id;
-	struct secpolicyindex spidx;
-
-	if (isrc->sa_family != idst->sa_family) {
-		ipseclog((LOG_ERR, "protocol family mismatched %u != %u\n",
-			isrc->sa_family, idst->sa_family));
-		return NULL;
-	}
-
-	s = splnet();	/*called from softclock()*/
-	LIST_FOREACH(sp, &sptree[dir], chain) {
-		if (sp->state == IPSEC_SPSTATE_DEAD)
-			continue;
-
-		r1 = r2 = NULL;
-		for (p = sp->req; p; p = p->next) {
-			if (p->saidx.mode != IPSEC_MODE_TUNNEL)
-				continue;
-
-			r1 = r2;
-			r2 = p;
-
-			if (!r1) {
-				if (sp->spidx) {
-					/*
-					 * here we look at address matches
-					 * only
-					 */
-					spidx = *sp->spidx;
-					if (isrc->sa_len > sizeof(spidx.src) ||
-					    idst->sa_len > sizeof(spidx.dst))
-						continue;
-					bcopy(isrc, &spidx.src, isrc->sa_len);
-					bcopy(idst, &spidx.dst, idst->sa_len);
-					if (!key_cmpspidx_withmask(sp->spidx,
-					    &spidx))
-						continue;
-				} else
-					; /* can't check for tagged policy */
-			} else {
-				is = (struct sockaddr *)&r1->saidx.src;
-				id = (struct sockaddr *)&r1->saidx.dst;
-				if (key_sockaddrcmp(is, isrc, 0) ||
-				    key_sockaddrcmp(id, idst, 0))
-					continue;
-			}
-
-			os = (struct sockaddr *)&r2->saidx.src;
-			od = (struct sockaddr *)&r2->saidx.dst;
-			if (key_sockaddrcmp(os, osrc, 0) ||
-			    key_sockaddrcmp(od, odst, 0))
-				continue;
-
-			goto found;
-		}
-	}
-	splx(s);
-	return NULL;
-
-found:
-	sp->lastused = time_second;
-	sp->refcnt++;
-	splx(s);
-	return sp;
-}
-
-/*
- * allocating an SA entry for an *OUTBOUND* packet.
- * checking each request entries in SP, and acquire an SA if need.
- * OUT:	0: there are valid requests.
- *	ENOENT: policy may be valid, but SA with REQUIRE is on acquiring.
- */
-int
-key_checkrequest(isr, saidx)
-	struct ipsecrequest *isr;
-	struct secasindex *saidx;
-{
-	u_int level;
-	int error;
-
-	/* sanity check */
-	if (isr == NULL || saidx == NULL)
-		panic("key_checkrequest: NULL pointer is passed.");
-
-	/* check mode */
-	switch (saidx->mode) {
-	case IPSEC_MODE_TRANSPORT:
-	case IPSEC_MODE_TUNNEL:
-		break;
-	case IPSEC_MODE_ANY:
-	default:
-		panic("key_checkrequest: Invalid policy defined.");
-	}
-
-	/* get current level */
-	level = ipsec_get_reqlevel(isr, saidx->src.ss_family);
-
-#if 0
-	/*
-	 * We do allocate new SA only if the state of SA in the holder is
-	 * SADB_SASTATE_DEAD.  The SA for outbound must be the oldest.
-	 */
-	if (isr->sav != NULL) {
-		if (isr->sav->sah == NULL)
-			panic("key_checkrequest: sah is null.");
-		if (isr->sav ==
-		    LIST_FIRST(&isr->sav->sah->savtree[SADB_SASTATE_DEAD])) {
-			KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
-				printf("DP checkrequest calls free SA:%p\n",
-					isr->sav));
-			key_freesav(isr->sav);
-			isr->sav = NULL;
-		}
-	}
-#else
-	/*
-	 * we free any SA stashed in the IPsec request because a different
-	 * SA may be involved each time this request is checked, either
-	 * because new SAs are being configured, or this request is
-	 * associated with an unconnected datagram socket, or this request
-	 * is associated with a system default policy.
-	 *
-	 * The operation may have negative impact to performance.  We may
-	 * want to check cached SA carefully, rather than picking new SA
-	 * every time.
-	 */
-	if (isr->sav != NULL) {
-		key_freesav(isr->sav);
-		isr->sav = NULL;
-	}
-#endif
-
-	/*
-	 * new SA allocation if no SA found.
-	 * key_allocsa_policy should allocate the oldest SA available.
-	 * See key_do_allocsa_policy(), and draft-jenkins-ipsec-rekeying-03.txt.
-	 */
-	if (isr->sav == NULL)
-		isr->sav = key_allocsa_policy(saidx);
-
-	/* When there is SA. */
-	if (isr->sav != NULL)
-		return 0;
-
-	/* there is no SA */
-	if ((error = key_acquire(saidx, isr->sp)) != 0) {
-		/* XXX What should I do ? */
-		ipseclog((LOG_DEBUG, "key_checkrequest: error %d returned "
-			"from key_acquire.\n", error));
-		return error;
-	}
-
-	return level == IPSEC_LEVEL_REQUIRE ? ENOENT : 0;
-}
-
-/*
- * allocating a SA for policy entry from SAD.
- * NOTE: searching SAD of aliving state.
- * OUT:	NULL:	not found.
- *	others:	found and return the pointer.
- */
-static struct secasvar *
-key_allocsa_policy(saidx)
-	struct secasindex *saidx;
-{
-	struct secashead *sah;
-	struct secasvar *sav;
-	u_int stateidx, state;
-	const u_int *saorder_state_valid;
-	int arraysize;
-
-	LIST_FOREACH(sah, &sahtree, chain) {
-		if (sah->state == SADB_SASTATE_DEAD)
-			continue;
-		if (key_cmpsaidx(&sah->saidx, saidx, CMP_MODE_REQID))
-			goto found;
-	}
-
-	return NULL;
-
-    found:
-
-	/*
-	 * search a valid state list for outbound packet.
-	 * This search order is important.
-	 */
-	if (key_preferred_oldsa) {
-		saorder_state_valid = saorder_state_valid_prefer_old;
-		arraysize = _ARRAYLEN(saorder_state_valid_prefer_old);
-	} else {
-		saorder_state_valid = saorder_state_valid_prefer_new;
-		arraysize = _ARRAYLEN(saorder_state_valid_prefer_new);
-	}
-
-	for (stateidx = 0; stateidx < arraysize; stateidx++) {
-
-		state = saorder_state_valid[stateidx];
-
-		sav = key_do_allocsa_policy(sah, state);
-		if (sav != NULL)
-			return sav;
-	}
-
-	return NULL;
-}
-
-/*
- * searching SAD with direction, protocol, mode and state.
- * called by key_allocsa_policy().
- * OUT:
- *	NULL	: not found
- *	others	: found, pointer to a SA.
- */
-static struct secasvar *
-key_do_allocsa_policy(sah, state)
-	struct secashead *sah;
-	u_int state;
-{
-	struct secasvar *sav, *nextsav, *candidate, *d;
-
-	/* initilize */
-	candidate = NULL;
-
-	for (sav = LIST_FIRST(&sah->savtree[state]);
-	     sav != NULL;
-	     sav = nextsav) {
-
-		nextsav = LIST_NEXT(sav, chain);
-
-		/* sanity check */
-		KEY_CHKSASTATE(sav->state, state, "key_do_allocsa_policy");
-
-		/* initialize */
-		if (candidate == NULL) {
-			candidate = sav;
-			continue;
-		}
-
-		/* Which SA is the better ? */
-
-		/* sanity check 2 */
-		if (candidate->lft_c == NULL || sav->lft_c == NULL)
-			panic("key_do_allocsa_policy: "
-				"lifetime_current is NULL.");
-
-		/* What the best method is to compare ? */
-		if (key_preferred_oldsa) {
-			if (candidate->lft_c->sadb_lifetime_addtime >
-					sav->lft_c->sadb_lifetime_addtime) {
-				candidate = sav;
-			}
-			continue;
-			/*NOTREACHED*/
-		}
-
-		/* preferred new sa rather than old sa */
-		if (candidate->lft_c->sadb_lifetime_addtime <
-				sav->lft_c->sadb_lifetime_addtime) {
-			d = candidate;
-			candidate = sav;
-		} else
-			d = sav;
-
-		/*
-		 * prepared to delete the SA when there is more
-		 * suitable candidate and the lifetime of the SA is not
-		 * permanent.
-		 */
-		if (d->lft_c->sadb_lifetime_addtime != 0) {
-			struct mbuf *m, *result = NULL;
-
-			key_sa_chgstate(d, SADB_SASTATE_DEAD);
-
-			m = key_setsadbmsg(SADB_DELETE, 0,
-			    key_proto2satype(d->sah->saidx.proto),
-			    0, 0, d->refcnt - 1);
-			if (!m)
-				goto msgfail;
-			result = m;
-
-			/* set sadb_address for saidx's. */
-			m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
-				(struct sockaddr *)&d->sah->saidx.src,
-				FULLMASK, IPSEC_ULPROTO_ANY);
-			if (!m)
-				goto msgfail;
-			m_cat(result, m);
-
-			/* set sadb_address for saidx's. */
-			m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
-				(struct sockaddr *)&d->sah->saidx.dst,
-				FULLMASK, IPSEC_ULPROTO_ANY);
-			if (!m)
-				goto msgfail;
-			m_cat(result, m);
-
-			/* create SA extension */
-			m = key_setsadbsa(d);
-			if (!m)
-				goto msgfail;
-			m_cat(result, m);
-
-			if (result->m_len < sizeof(struct sadb_msg)) {
-				result = m_pullup(result,
-						sizeof(struct sadb_msg));
-				if (result == NULL)
-					goto msgfail;
-			}
-
-			result->m_pkthdr.len = 0;
-			for (m = result; m; m = m->m_next)
-				result->m_pkthdr.len += m->m_len;
-			mtod(result, struct sadb_msg *)->sadb_msg_len =
-				PFKEY_UNIT64(result->m_pkthdr.len);
-
-			if (key_sendup_mbuf(NULL, result,
-					KEY_SENDUP_REGISTERED))
-				goto msgfail;
-
-			result = NULL;
-
-		 msgfail:
-			if (result != NULL)
-				m_freem(result);
-			key_freesav(d);
-		}
-	}
-
-	if (candidate) {
-		candidate->refcnt++;
-		KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
-			printf("DP allocsa_policy cause "
-				"refcnt++:%d SA:%p\n",
-				candidate->refcnt, candidate));
-	}
-	return candidate;
-}
-
-/*
- * allocating a SA entry for a *INBOUND* packet.
- * Must call key_freesav() later.
- * OUT: positive:	pointer to a sav.
- *	NULL:		not found, or error occured.
- *
- * In the comparison, source address will be ignored for RFC2401 conformance.
- * To quote, from section 4.1:
- *	A security association is uniquely identified by a triple consisting
- *	of a Security Parameter Index (SPI), an IP Destination Address, and a
- *	security protocol (AH or ESP) identifier.
- * Note that, however, we do need to keep source address in IPsec SA.
- * IKE specification and PF_KEY specification do assume that we
- * keep source address in IPsec SA.  We see a tricky situation here.
- */
-struct secasvar *
-key_allocsa(family, src, dst, proto, spi)
-	u_int family, proto;
-	caddr_t src, dst;
-	u_int32_t spi;
-{
-	struct secasvar *sav, *match;
-	u_int stateidx, state, tmpidx, matchidx;
-	struct sockaddr_in sin;
-#ifdef INET6
-	struct sockaddr_in6 sin6;
-#endif
-	int s;
-	const u_int *saorder_state_valid;
-	int arraysize;
-
-	/* sanity check */
-	if (src == NULL || dst == NULL)
-		panic("key_allocsa: NULL pointer is passed.");
-
-	/*
-	 * when both systems employ similar strategy to use a SA.
-	 * the search order is important even in the inbound case.
-	 */
-	if (key_preferred_oldsa) {
-		saorder_state_valid = saorder_state_valid_prefer_old;
-		arraysize = _ARRAYLEN(saorder_state_valid_prefer_old);
-	} else {
-		saorder_state_valid = saorder_state_valid_prefer_new;
-		arraysize = _ARRAYLEN(saorder_state_valid_prefer_new);
-	}
-
-	bzero(&sin, sizeof(sin));
-	sin.sin_family = AF_INET;
-	sin.sin_len = sizeof(sin);
-#ifdef INET6
-	bzero(&sin6, sizeof(sin6));
-	sin6.sin6_family = AF_INET6;
-	sin6.sin6_len = sizeof(sin6);
-#endif
-
-	/*
-	 * searching SAD.
-	 * XXX: to be checked internal IP header somewhere.  Also when
-	 * IPsec tunnel packet is received.  But ESP tunnel mode is
-	 * encrypted so we can't check internal IP header.
-	 */
-	s = splnet();	/*called from softclock()*/
-	/*
-	 * search a valid state list for inbound packet.
-	 * the search order is not important.
-	 */
-	match = NULL;
-	matchidx = arraysize;
-	LIST_FOREACH(sav, &spihash[SPIHASH(spi)], spihash) {
-		if (sav->spi != spi)
-			continue;
-		if (proto != sav->sah->saidx.proto)
-			continue;
-		if (family != sav->sah->saidx.src.ss_family ||
-		    family != sav->sah->saidx.dst.ss_family)
-			continue;
-		tmpidx = arraysize;
-		for (stateidx = 0; stateidx < matchidx; stateidx++) {
-			state = saorder_state_valid[stateidx];
-			if (sav->state == state) {
-				tmpidx = stateidx;
-				break;
-			}
-		}
-		if (tmpidx >= matchidx)
-			continue;
-
-#if 0	/* don't check src */
-		/* check src address */
-		switch (family) {
-		case AF_INET:
-			bcopy(src, &sin.sin_addr, sizeof(sin.sin_addr));
-			if (key_sockaddrcmp((struct sockaddr*)&sin,
-			    (struct sockaddr *)&sav->sah->saidx.src, 0) != 0)
-				continue;
-
-			break;
-#ifdef INET6
-		case AF_INET6:
-			bcopy(src, &sin6.sin6_addr, sizeof(sin6.sin6_addr));
-			sin6.sin6_scope_id = 0;
-			if (sa6_recoverscope(&sin6))
-				continue;
-			if (key_sockaddrcmp((struct sockaddr *)&sin6,
-			    (struct sockaddr *)&sav->sah->saidx.src, 0) != 0)
-				continue;
-			break;
-#endif
-		default:
-			ipseclog((LOG_DEBUG, "key_allocsa: "
-			    "unknown address family=%d.\n",
-			    family));
-			continue;
-		}
-
-#endif
-		/* check dst address */
-		switch (family) {
-		case AF_INET:
-			bcopy(dst, &sin.sin_addr, sizeof(sin.sin_addr));
-			if (key_sockaddrcmp((struct sockaddr*)&sin,
-			    (struct sockaddr *)&sav->sah->saidx.dst, 0) != 0)
-				continue;
-
-			break;
-#ifdef INET6
-		case AF_INET6:
-			bcopy(dst, &sin6.sin6_addr, sizeof(sin6.sin6_addr));
-			sin6.sin6_scope_id = 0;
-			if (sa6_recoverscope(&sin6))
-				continue;
-			if (key_sockaddrcmp((struct sockaddr *)&sin6,
-			    (struct sockaddr *)&sav->sah->saidx.dst, 0) != 0)
-				continue;
-			break;
-#endif
-		default:
-			ipseclog((LOG_DEBUG, "key_allocsa: "
-			    "unknown address family=%d.\n", family));
-			continue;
-		}
-
-		match = sav;
-		matchidx = tmpidx;
-	}
-
-	if (match)
-		goto found;
-
-	/* not found */
-	splx(s);
-	return NULL;
-
-found:
-	match->refcnt++;
-	splx(s);
-	KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
-		printf("DP allocsa cause refcnt++:%d SA:%p\n",
-			match->refcnt, match));
-	return match;
-}
-
-/*
- * Must be called after calling key_allocsp().
- * For both the packet without socket and key_freeso().
- */
-void
-key_freesp(sp)
-	struct secpolicy *sp;
-{
-	/* sanity check */
-	if (sp == NULL)
-		panic("key_freesp: NULL pointer is passed.");
-
-	sp->refcnt--;
-	KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
-		printf("DP freesp cause refcnt--:%d SP:%p\n",
-			sp->refcnt, sp));
-
-	if (sp->refcnt == 0)
-		key_delsp(sp);
-
-	return;
-}
-
-/*
- * Must be called after calling key_allocsa().
- * This function is called by key_freesp() to free some SA allocated
- * for a policy.
- */
-void
-key_freesav(sav)
-	struct secasvar *sav;
-{
-	/* sanity check */
-	if (sav == NULL)
-		panic("key_freesav: NULL pointer is passed.");
-
-	sav->refcnt--;
-	KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
-		printf("DP freesav cause refcnt--:%d SA:%p SPI %u\n",
-			sav->refcnt, sav, (u_int32_t)ntohl(sav->spi)));
-
-	if (sav->refcnt > 0)
-		return;
-
-	key_delsav(sav);
-}
-
-static void
-key_delsav(sav)
-	struct secasvar *sav;
-{
-	int s;
-
-	/* sanity check */
-	if (sav == NULL)
-		panic("key_delsav: NULL pointer is passed.");
-
-	if (sav->refcnt > 0)
-		panic("key_delsav: called with positive refcnt");
-
-	s = splnet();
-
-	if (__LIST_CHAINED(sav))
-		LIST_REMOVE(sav, chain);
-
-	if (sav->spihash.le_prev || sav->spihash.le_next)
-		LIST_REMOVE(sav, spihash);
-
-	if (sav->key_auth != NULL) {
-		bzero(_KEYBUF(sav->key_auth), _KEYLEN(sav->key_auth));
-		KFREE(sav->key_auth);
-		sav->key_auth = NULL;
-	}
-	if (sav->key_enc != NULL) {
-		bzero(_KEYBUF(sav->key_enc), _KEYLEN(sav->key_enc));
-		KFREE(sav->key_enc);
-		sav->key_enc = NULL;
-	}
-	if (sav->sched) {
-		bzero(sav->sched, sav->schedlen);
-		KFREE(sav->sched);
-		sav->sched = NULL;
-	}
-	if (sav->replay != NULL) {
-		keydb_delsecreplay(sav->replay);
-		sav->replay = NULL;
-	}
-	if (sav->lft_c != NULL) {
-		KFREE(sav->lft_c);
-		sav->lft_c = NULL;
-	}
-	if (sav->lft_h != NULL) {
-		KFREE(sav->lft_h);
-		sav->lft_h = NULL;
-	}
-	if (sav->lft_s != NULL) {
-		KFREE(sav->lft_s);
-		sav->lft_s = NULL;
-	}
-	if (sav->iv != NULL) {
-		KFREE(sav->iv);
-		sav->iv = NULL;
-	}
-
-	keydb_delsecasvar(sav);
-
-	splx(s);
-}
-
-/* %%% SPD management */
-/*
- * free security policy entry.
- */
-static void
-key_delsp(sp)
-	struct secpolicy *sp;
-{
-	int s;
-
-	/* sanity check */
-	if (sp == NULL)
-		panic("key_delsp: NULL pointer is passed.");
-
-	if (sp->refcnt > 0)
-		panic("key_delsp: called with positive refcnt");
-
-	s = splnet();	/*called from softclock()*/
-
-    {
-	struct ipsecrequest *isr = sp->req, *nextisr;
-
-	while (isr != NULL) {
-		if (isr->sav != NULL) {
-			KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
-				printf("DP delsp calls free SA:%p\n",
-					isr->sav));
-			key_freesav(isr->sav);
-			isr->sav = NULL;
-		}
-
-		nextisr = isr->next;
-		KFREE(isr);
-		isr = nextisr;
-	}
-    }
-
-	keydb_delsecpolicy(sp);
-
-	splx(s);
-
-	return;
-}
-
-/*
- * search SPD
- * OUT:	NULL	: not found
- *	others	: found, pointer to a SP.
- */
-static struct secpolicy *
-key_getsp(spidx, dir)
-	struct secpolicyindex *spidx;
-	int dir;
-{
-	struct secpolicy *sp;
-
-	/* sanity check */
-	if (spidx == NULL)
-		panic("key_getsp: NULL pointer is passed.");
-
-	LIST_FOREACH(sp, &sptree[dir], chain) {
-		if (sp->state == IPSEC_SPSTATE_DEAD)
-			continue;
-		if (!sp->spidx)
-			continue;
-		if (key_cmpspidx_exactly(spidx, sp->spidx)) {
-			sp->refcnt++;
-			return sp;
-		}
-	}
-
-	return NULL;
-}
-
-/*
- * get SP by index.
- * OUT:	NULL	: not found
- *	others	: found, pointer to a SP.
- */
-static struct secpolicy *
-key_getspbyid(id)
-	u_int32_t id;
-{
-	struct secpolicy *sp;
-
-	TAILQ_FOREACH(sp, &sptailq, tailq) {
-		if (sp->id == id) {
-			sp->refcnt++;
-			return sp;
-		}
-	}
-
-	return NULL;
-}
-
-struct secpolicy *
-key_newsp(id)
-	u_int32_t id;
-{
-	struct secpolicy *newsp = NULL, *sp;
-	u_int32_t newid;
-
-	if (id > IPSEC_MANUAL_POLICYID_MAX) {
-		ipseclog((LOG_DEBUG,
-		    "key_newsp: policy_id=%u range "
-		    "violation, updated by kernel.\n", id));
-		id = 0;
-	}
-
-	if (id == 0) {
-		if ((newid = keydb_newspid()) == 0) {
-			ipseclog((LOG_DEBUG, 
-			    "key_newsp: new policy_id allocation failed."));
-			return NULL;
-		}
-	} else {
-		sp = key_getspbyid(id);
-		if (sp != NULL) {
-			ipseclog((LOG_DEBUG,
-			    "key_newsp: policy_id(%u) has been used.\n", id));
-			key_freesp(sp);
-			return NULL;
-		}
-		newid = id;
-	}
-
-	newsp = keydb_newsecpolicy();
-	if (!newsp)
-		return newsp;
-
-	newsp->id = newid;
-	newsp->refcnt = 1;
-	newsp->req = NULL;
-
-	return newsp;
-}
-
-/*
- * create secpolicy structure from sadb_x_policy structure.
- * NOTE: `state', `secpolicyindex' in secpolicy structure are not set,
- * so must be set properly later.
- */
-struct secpolicy *
-key_msg2sp(xpl0, len, error)
-	struct sadb_x_policy *xpl0;
-	size_t len;
-	int *error;
-{
-	struct secpolicy *newsp;
-
-	/* sanity check */
-	if (xpl0 == NULL)
-		panic("key_msg2sp: NULL pointer was passed.");
-	if (len < sizeof(*xpl0))
-		panic("key_msg2sp: invalid length.");
-	if (len != PFKEY_EXTLEN(xpl0)) {
-		ipseclog((LOG_DEBUG, "key_msg2sp: Invalid msg length.\n"));
-		*error = EINVAL;
-		return NULL;
-	}
-
-	if ((newsp = key_newsp(xpl0->sadb_x_policy_id)) == NULL) {
-		*error = ENOBUFS;
-		return NULL;
-	}
-
-	newsp->dir = xpl0->sadb_x_policy_dir;
-	newsp->policy = xpl0->sadb_x_policy_type;
-
-	/* check policy */
-	switch (xpl0->sadb_x_policy_type) {
-	case IPSEC_POLICY_DISCARD:
-	case IPSEC_POLICY_NONE:
-	case IPSEC_POLICY_ENTRUST:
-	case IPSEC_POLICY_BYPASS:
-		newsp->req = NULL;
-		break;
-
-	case IPSEC_POLICY_IPSEC:
-	    {
-		int tlen;
-		struct sadb_x_ipsecrequest *xisr;
-		struct ipsecrequest **p_isr = &newsp->req;
-
-		/* validity check */
-		if (PFKEY_EXTLEN(xpl0) < sizeof(*xpl0)) {
-			ipseclog((LOG_DEBUG,
-			    "key_msg2sp: Invalid msg length.\n"));
-			key_freesp(newsp);
-			*error = EINVAL;
-			return NULL;
-		}
-
-		tlen = PFKEY_EXTLEN(xpl0) - sizeof(*xpl0);
-		xisr = (struct sadb_x_ipsecrequest *)(xpl0 + 1);
-
-		while (tlen > 0) {
-
-			/* length check */
-			if (xisr->sadb_x_ipsecrequest_len < sizeof(*xisr)) {
-				ipseclog((LOG_DEBUG, "key_msg2sp: "
-					"invalid ipsecrequest length.\n"));
-				key_freesp(newsp);
-				*error = EINVAL;
-				return NULL;
-			}
-
-			/* allocate request buffer */
-			KMALLOC(*p_isr, struct ipsecrequest *, sizeof(**p_isr));
-			if ((*p_isr) == NULL) {
-				ipseclog((LOG_DEBUG,
-				    "key_msg2sp: No more memory.\n"));
-				key_freesp(newsp);
-				*error = ENOBUFS;
-				return NULL;
-			}
-			bzero(*p_isr, sizeof(**p_isr));
-
-			/* set values */
-			(*p_isr)->next = NULL;
-
-			switch (xisr->sadb_x_ipsecrequest_proto) {
-			case IPPROTO_ESP:
-			case IPPROTO_AH:
-			case IPPROTO_IPCOMP:
-				break;
-			default:
-				ipseclog((LOG_DEBUG,
-				    "key_msg2sp: invalid proto type=%u\n",
-				    xisr->sadb_x_ipsecrequest_proto));
-				key_freesp(newsp);
-				*error = EPROTONOSUPPORT;
-				return NULL;
-			}
-			(*p_isr)->saidx.proto = xisr->sadb_x_ipsecrequest_proto;
-
-			switch (xisr->sadb_x_ipsecrequest_mode) {
-			case IPSEC_MODE_TRANSPORT:
-			case IPSEC_MODE_TUNNEL:
-				break;
-			case IPSEC_MODE_ANY:
-			default:
-				ipseclog((LOG_DEBUG,
-				    "key_msg2sp: invalid mode=%u\n",
-				    xisr->sadb_x_ipsecrequest_mode));
-				key_freesp(newsp);
-				*error = EINVAL;
-				return NULL;
-			}
-			(*p_isr)->saidx.mode = xisr->sadb_x_ipsecrequest_mode;
-
-			switch (xisr->sadb_x_ipsecrequest_level) {
-			case IPSEC_LEVEL_DEFAULT:
-			case IPSEC_LEVEL_USE:
-			case IPSEC_LEVEL_REQUIRE:
-				break;
-			case IPSEC_LEVEL_UNIQUE:
-				/* validity check */
-				/*
-				 * If range violation of reqid, kernel will
-				 * update it, don't refuse it.
-				 */
-				if (xisr->sadb_x_ipsecrequest_reqid
-						> IPSEC_MANUAL_REQID_MAX) {
-					ipseclog((LOG_DEBUG,
-					    "key_msg2sp: reqid=%u range "
-					    "violation, updated by kernel.\n",
-					    xisr->sadb_x_ipsecrequest_reqid));
-					xisr->sadb_x_ipsecrequest_reqid = 0;
-				}
-
-				/* allocate new reqid id if reqid is zero. */
-				if (xisr->sadb_x_ipsecrequest_reqid == 0) {
-					u_int32_t reqid;
-					if ((reqid = key_newreqid()) == 0) {
-						key_freesp(newsp);
-						*error = ENOBUFS;
-						return NULL;
-					}
-					(*p_isr)->saidx.reqid = reqid;
-					xisr->sadb_x_ipsecrequest_reqid = reqid;
-				} else {
-				/* set it for manual keying. */
-					(*p_isr)->saidx.reqid =
-						xisr->sadb_x_ipsecrequest_reqid;
-				}
-				break;
-
-			default:
-				ipseclog((LOG_DEBUG, "key_msg2sp: invalid level=%u\n",
-					xisr->sadb_x_ipsecrequest_level));
-				key_freesp(newsp);
-				*error = EINVAL;
-				return NULL;
-			}
-			(*p_isr)->level = xisr->sadb_x_ipsecrequest_level;
-
-			/* set IP addresses if there */
-			if (xisr->sadb_x_ipsecrequest_len > sizeof(*xisr)) {
-				struct sockaddr *paddr;
-
-				paddr = (struct sockaddr *)(xisr + 1);
-
-				/* validity check */
-				if (paddr->sa_len
-				    > sizeof((*p_isr)->saidx.src)) {
-					ipseclog((LOG_DEBUG, "key_msg2sp: invalid request "
-						"address length.\n"));
-					key_freesp(newsp);
-					*error = EINVAL;
-					return NULL;
-				}
-				bcopy(paddr, &(*p_isr)->saidx.src,
-					paddr->sa_len);
-
-				paddr = (struct sockaddr *)((caddr_t)paddr
-							+ paddr->sa_len);
-
-				/* validity check */
-				if (paddr->sa_len
-				    > sizeof((*p_isr)->saidx.dst)) {
-					ipseclog((LOG_DEBUG, "key_msg2sp: invalid request "
-						"address length.\n"));
-					key_freesp(newsp);
-					*error = EINVAL;
-					return NULL;
-				}
-				bcopy(paddr, &(*p_isr)->saidx.dst,
-					paddr->sa_len);
-			}
-
-			(*p_isr)->sav = NULL;
-			(*p_isr)->sp = newsp;
-
-			/* initialization for the next. */
-			p_isr = &(*p_isr)->next;
-			tlen -= xisr->sadb_x_ipsecrequest_len;
-
-			/* validity check */
-			if (tlen < 0) {
-				ipseclog((LOG_DEBUG, "key_msg2sp: becoming tlen < 0.\n"));
-				key_freesp(newsp);
-				*error = EINVAL;
-				return NULL;
-			}
-
-			xisr = (struct sadb_x_ipsecrequest *)((caddr_t)xisr
-			                 + xisr->sadb_x_ipsecrequest_len);
-		}
-	    }
-		break;
-	default:
-		ipseclog((LOG_DEBUG, "key_msg2sp: invalid policy type.\n"));
-		key_freesp(newsp);
-		*error = EINVAL;
-		return NULL;
-	}
-
-	*error = 0;
-	return newsp;
-}
-
-static u_int32_t
-key_newreqid()
-{
-	static u_int32_t auto_reqid = IPSEC_MANUAL_REQID_MAX + 1;
-
-	auto_reqid = (auto_reqid == ~0
-			? IPSEC_MANUAL_REQID_MAX + 1 : auto_reqid + 1);
-
-	/* XXX should be unique check */
-
-	return auto_reqid;
-}
-
-/*
- * copy secpolicy struct to sadb_x_policy structure indicated.
- */
-struct mbuf *
-key_sp2msg(sp)
-	struct secpolicy *sp;
-{
-	struct sadb_x_policy *xpl;
-	int tlen;
-	caddr_t p;
-	struct mbuf *m;
-
-	/* sanity check. */
-	if (sp == NULL)
-		panic("key_sp2msg: NULL pointer was passed.");
-
-	tlen = key_getspreqmsglen(sp);
-
-	m = key_alloc_mbuf(tlen);
-	if (!m || m->m_next) {	/*XXX*/
-		if (m)
-			m_freem(m);
-		return NULL;
-	}
-
-	m->m_len = tlen;
-	m->m_next = NULL;
-	xpl = mtod(m, struct sadb_x_policy *);
-	bzero(xpl, tlen);
-
-	xpl->sadb_x_policy_len = PFKEY_UNIT64(tlen);
-	xpl->sadb_x_policy_exttype = SADB_X_EXT_POLICY;
-	xpl->sadb_x_policy_type = sp->policy;
-	xpl->sadb_x_policy_dir = sp->dir;
-	xpl->sadb_x_policy_id = sp->id;
-	p = (caddr_t)xpl + sizeof(*xpl);
-
-	/* if is the policy for ipsec ? */
-	if (sp->policy == IPSEC_POLICY_IPSEC) {
-		struct sadb_x_ipsecrequest *xisr;
-		struct ipsecrequest *isr;
-
-		for (isr = sp->req; isr != NULL; isr = isr->next) {
-
-			xisr = (struct sadb_x_ipsecrequest *)p;
-
-			xisr->sadb_x_ipsecrequest_proto = isr->saidx.proto;
-			xisr->sadb_x_ipsecrequest_mode = isr->saidx.mode;
-			xisr->sadb_x_ipsecrequest_level = isr->level;
-			xisr->sadb_x_ipsecrequest_reqid = isr->saidx.reqid;
-
-			p += sizeof(*xisr);
-			bcopy(&isr->saidx.src, p, isr->saidx.src.ss_len);
-			p += isr->saidx.src.ss_len;
-			bcopy(&isr->saidx.dst, p, isr->saidx.dst.ss_len);
-			p += isr->saidx.src.ss_len;
-
-			xisr->sadb_x_ipsecrequest_len =
-			    PFKEY_ALIGN8(sizeof(*xisr) +
-			    isr->saidx.src.ss_len + isr->saidx.dst.ss_len);
-		}
-	}
-
-	return m;
-}
-
-/* m will not be freed nor modified */
-static struct mbuf *
-#ifdef __STDC__
-key_gather_mbuf(struct mbuf *m, const struct sadb_msghdr *mhp,
-	int ndeep, int nitem, ...)
-#else
-key_gather_mbuf(m, mhp, ndeep, nitem, va_alist)
-	struct mbuf *m;
-	const struct sadb_msghdr *mhp;
-	int ndeep;
-	int nitem;
-	va_dcl
-#endif
-{
-	va_list ap;
-	int idx;
-	int i;
-	struct mbuf *result = NULL, *n;
-	int len;
-
-	if (m == NULL || mhp == NULL)
-		panic("null pointer passed to key_gather");
-
-	va_start(ap, nitem);
-	for (i = 0; i < nitem; i++) {
-		idx = va_arg(ap, int);
-		if (idx < 0 || idx > SADB_EXT_MAX)
-			goto fail;
-		/* don't attempt to pull empty extension */
-		if (idx == SADB_EXT_RESERVED && mhp->msg == NULL)
-			continue;
-		if (idx != SADB_EXT_RESERVED  &&
-		    (mhp->ext[idx] == NULL || mhp->extlen[idx] == 0))
-			continue;
-
-		if (idx == SADB_EXT_RESERVED) {
-			len = PFKEY_ALIGN8(sizeof(struct sadb_msg));
-#ifdef DIAGNOSTIC
-			if (len > MHLEN)
-				panic("assumption failed");
-#endif
-			MGETHDR(n, M_DONTWAIT, MT_DATA);
-			if (!n)
-				goto fail;
-			n->m_len = len;
-			n->m_next = NULL;
-			m_copydata(m, 0, sizeof(struct sadb_msg),
-			    mtod(n, caddr_t));
-		} else if (i < ndeep) {
-			len = mhp->extlen[idx];
-			n = key_alloc_mbuf(len);
-			if (!n || n->m_next) {	/*XXX*/
-				if (n)
-					m_freem(n);
-				goto fail;
-			}
-			m_copydata(m, mhp->extoff[idx], mhp->extlen[idx],
-			    mtod(n, caddr_t));
-		} else {
-			n = m_copym(m, mhp->extoff[idx], mhp->extlen[idx],
-			    M_DONTWAIT);
-		}
-		if (n == NULL)
-			goto fail;
-
-		if (result)
-			m_cat(result, n);
-		else
-			result = n;
-	}
-	va_end(ap);
-
-	if ((result->m_flags & M_PKTHDR) != 0) {
-		result->m_pkthdr.len = 0;
-		for (n = result; n; n = n->m_next)
-			result->m_pkthdr.len += n->m_len;
-	}
-
-	return result;
-
-fail:
-	va_end(ap);
-	m_freem(result);
-	return NULL;
-}
-
-/*
- * SADB_X_SPDADD, SADB_X_SPDSETIDX or SADB_X_SPDUPDATE processing
- * add an entry to SP database, when received
- *   <base, address(SD), (lifetime(H),) policy>
- * from the user(?).
- * Adding to SP database,
- * and send
- *   <base, address(SD), (lifetime(H),) policy>
- * to the socket which was send.
- *
- * SPDADD set a unique policy entry.
- * SPDSETIDX like SPDADD without a part of policy requests.
- * SPDUPDATE replace a unique policy entry.
- *
- * m will always be freed.
- */
-static int
-key_spdadd(so, m, mhp)
-	struct socket *so;
-	struct mbuf *m;
-	const struct sadb_msghdr *mhp;
-{
-	struct sadb_address *src0 = NULL, *dst0 = NULL;
-	struct sadb_x_policy *xpl0, *xpl;
-	struct sadb_lifetime *lft = NULL;
-	struct secpolicyindex spidx;
-	struct secpolicy *newsp;
-	struct ipsecrequest *isr;
-	int error;
-	int spidxmode;
-
-	/* sanity check */
-	if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
-		panic("key_spdadd: NULL pointer is passed.");
-
-	if (mhp->ext[SADB_EXT_ADDRESS_SRC] != NULL &&
-	    mhp->ext[SADB_EXT_ADDRESS_DST] != NULL) {
-		;
-	} else {
-		ipseclog((LOG_DEBUG, "key_spdadd: invalid message is passed.\n"));
-		return key_senderror(so, m, EINVAL);
-	}
-	if (mhp->ext[SADB_X_EXT_POLICY] == NULL) {
-		ipseclog((LOG_DEBUG, "key_spdadd: invalid message is passed.\n"));
-		return key_senderror(so, m, EINVAL);
-	}
-	if ((mhp->extlen[SADB_EXT_ADDRESS_SRC] &&
-	     mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address)) ||
-	    (mhp->extlen[SADB_EXT_ADDRESS_DST] &&
-	     mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address)) ||
-	    mhp->extlen[SADB_X_EXT_POLICY] < sizeof(struct sadb_x_policy)) {
-		ipseclog((LOG_DEBUG, "key_spdadd: invalid message is passed.\n"));
-		return key_senderror(so, m, EINVAL);
-	}
-	if (mhp->ext[SADB_EXT_LIFETIME_HARD] != NULL) {
-		if (mhp->extlen[SADB_EXT_LIFETIME_HARD]
-			< sizeof(struct sadb_lifetime)) {
-			ipseclog((LOG_DEBUG, "key_spdadd: invalid message is passed.\n"));
-			return key_senderror(so, m, EINVAL);
-		}
-		lft = (struct sadb_lifetime *)mhp->ext[SADB_EXT_LIFETIME_HARD];
-	}
-
-	/* spidx mode, or tag mode */
-	spidxmode = (mhp->ext[SADB_EXT_ADDRESS_SRC] != NULL);
-
-	if (spidxmode) {
-		src0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_SRC];
-		dst0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_DST];
-		/* make secindex */
-		/* XXX boundary check against sa_len */
-		KEY_SETSECSPIDX(src0 + 1, dst0 + 1,
-		    src0->sadb_address_prefixlen, dst0->sadb_address_prefixlen,
-		    src0->sadb_address_proto, &spidx);
-	}
-	xpl0 = (struct sadb_x_policy *)mhp->ext[SADB_X_EXT_POLICY];
-
-	/* checking the direciton. */
-	switch (xpl0->sadb_x_policy_dir) {
-	case IPSEC_DIR_INBOUND:
-	case IPSEC_DIR_OUTBOUND:
-		break;
-	default:
-		ipseclog((LOG_DEBUG, "key_spdadd: Invalid SP direction.\n"));
-		mhp->msg->sadb_msg_errno = EINVAL;
-		return 0;
-	}
-
-	/* check policy */
-	/* key_spdadd() accepts DISCARD, NONE and IPSEC. */
-	if (xpl0->sadb_x_policy_type == IPSEC_POLICY_ENTRUST ||
-	    xpl0->sadb_x_policy_type == IPSEC_POLICY_BYPASS) {
-		ipseclog((LOG_DEBUG, "key_spdadd: Invalid policy type.\n"));
-		return key_senderror(so, m, EINVAL);
-	}
-
-	/* policy requests are mandatory when action is ipsec. */
-	if (mhp->msg->sadb_msg_type != SADB_X_SPDSETIDX &&
-	    xpl0->sadb_x_policy_type == IPSEC_POLICY_IPSEC &&
-	    mhp->extlen[SADB_X_EXT_POLICY] <= sizeof(*xpl0)) {
-		ipseclog((LOG_DEBUG, "key_spdadd: some policy requests part required.\n"));
-		return key_senderror(so, m, EINVAL);
-	}
-
-	/*
-	 * checking there is SP already or not.
-	 * SPDUPDATE doesn't depend on whether there is a SP or not.
-	 * If the type is either SPDADD or SPDSETIDX AND a SP is found,
-	 * then error.
-	 */
-	if (xpl0->sadb_x_policy_id != 0)
-		newsp = key_getspbyid(xpl0->sadb_x_policy_id);
-	else if (spidxmode)
-		newsp = key_getsp(&spidx, xpl0->sadb_x_policy_dir);
-	else
-		newsp = NULL;
-
-	if (newsp && (newsp->readonly || newsp->persist)) {
-		ipseclog((LOG_DEBUG,
-		    "key_spdadd: tried to alter readonly/persistent SP.\n"));
-		return key_senderror(so, m, EPERM);
-	}
-
-	if (mhp->msg->sadb_msg_type == SADB_X_SPDUPDATE) {
-		if (newsp) {
-			key_sp_dead(newsp);
-			key_freesp(newsp);	/* ref gained by key_getsp */
-			key_sp_unlink(newsp);
-			newsp = NULL;
-		}
-	} else {
-		if (newsp != NULL) {
-			key_freesp(newsp);
-			ipseclog((LOG_DEBUG, "key_spdadd: a SP entry exists already.\n"));
-			return key_senderror(so, m, EEXIST);
-		}
-	}
-
-	/* allocation new SP entry */
-	if ((newsp = key_msg2sp(xpl0, PFKEY_EXTLEN(xpl0), &error)) == NULL) {
-		return key_senderror(so, m, error);
-	}
-
-	if (spidxmode) {
-		error = keydb_setsecpolicyindex(newsp, &spidx);
-		if (error) {
-			keydb_delsecpolicy(newsp);
-			return key_senderror(so, m, error);
-		}
-
-		/* sanity check on addr pair */
-		if (((struct sockaddr *)(src0 + 1))->sa_family !=
-				((struct sockaddr *)(dst0 + 1))->sa_family) {
-			keydb_delsecpolicy(newsp);
-			return key_senderror(so, m, EINVAL);
-		}
-		if (((struct sockaddr *)(src0 + 1))->sa_len !=
-				((struct sockaddr *)(dst0 + 1))->sa_len) {
-			keydb_delsecpolicy(newsp);
-			return key_senderror(so, m, EINVAL);
-		}
-	}
-
-	for (isr = newsp->req; isr; isr = isr->next) {
-		struct sockaddr *sa;
-
-		/*
-		 * port spec is not permitted for tunnel mode
-		 */
-		if (isr->saidx.mode == IPSEC_MODE_TUNNEL && src0 && dst0) {
-			sa = (struct sockaddr *)(src0 + 1);
-			switch (sa->sa_family) {
-			case AF_INET:
-				if (((struct sockaddr_in *)sa)->sin_port) {
-					keydb_delsecpolicy(newsp);
-					return key_senderror(so, m, EINVAL);
-				}
-				break;
-			case AF_INET6:
-				if (((struct sockaddr_in6 *)sa)->sin6_port) {
-					keydb_delsecpolicy(newsp);
-					return key_senderror(so, m, EINVAL);
-				}
-				break;
-			default:
-				break;
-			}
-			sa = (struct sockaddr *)(dst0 + 1);
-			switch (sa->sa_family) {
-			case AF_INET:
-				if (((struct sockaddr_in *)sa)->sin_port) {
-					keydb_delsecpolicy(newsp);
-					return key_senderror(so, m, EINVAL);
-				}
-				break;
-			case AF_INET6:
-				if (((struct sockaddr_in6 *)sa)->sin6_port) {
-					keydb_delsecpolicy(newsp);
-					return key_senderror(so, m, EINVAL);
-				}
-				break;
-			default:
-				break;
-			}
-		}
-	}
-
-	/*
-	 * bark if we have different address family on tunnel address
-	 * specification.  applies only if we decapsulate in RFC2401
-	 * IPsec (implementation limitation).
-	 */
-	for (isr = newsp->req; isr; isr = isr->next) {
-		struct sockaddr *sa;
-
-		if (isr->saidx.src.ss_family && src0) {
-			sa = (struct sockaddr *)(src0 + 1);
-			if (sa->sa_family != isr->saidx.src.ss_family) {
-				keydb_delsecpolicy(newsp);
-				return key_senderror(so, m, EINVAL);
-			}
-		}
-		if (isr->saidx.dst.ss_family && dst0) {
-			sa = (struct sockaddr *)(dst0 + 1);
-			if (sa->sa_family != isr->saidx.dst.ss_family) {
-				keydb_delsecpolicy(newsp);
-				return key_senderror(so, m, EINVAL);
-			}
-		}
-	}
-
-	newsp->created = time_second;
-	newsp->lastused = time_second;
-	newsp->lifetime = lft ? lft->sadb_lifetime_addtime : 0;
-	newsp->validtime = lft ? lft->sadb_lifetime_usetime : 0;
-
-	newsp->state = IPSEC_SPSTATE_ALIVE;
-	LIST_INSERT_TAIL(&sptree[newsp->dir], newsp, secpolicy, chain);
-
-	/* delete the entry in spacqtree */
-	if (mhp->msg->sadb_msg_type == SADB_X_SPDUPDATE &&
-	    mhp->ext[SADB_EXT_ADDRESS_SRC]) {
-		struct secspacq *spacq;
-		if ((spacq = key_getspacq(&spidx)) != NULL) {
-			/* reset counter in order to deletion by timehandler. */
-			spacq->created = time_second;
-			spacq->count = 0;
-		}
-    	}
-
-	/* invalidate all cached SPD pointers on pcb */
-	ipsec_invalpcbcacheall();
-
-    {
-	struct mbuf *n, *mpolicy;
-	struct sadb_msg *newmsg;
-	int off;
-
-	/* create new sadb_msg to reply. */
-	if (lft) {
-		n = key_gather_mbuf(m, mhp, 2, 5, SADB_EXT_RESERVED,
-		    SADB_X_EXT_POLICY, SADB_EXT_LIFETIME_HARD,
-		    SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST);
-	} else {
-		n = key_gather_mbuf(m, mhp, 2, 4, SADB_EXT_RESERVED,
-		    SADB_X_EXT_POLICY,
-		    SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST);
-	}
-	if (!n)
-		return key_senderror(so, m, ENOBUFS);
-
-	if (n->m_len < sizeof(*newmsg)) {
-		n = m_pullup(n, sizeof(*newmsg));
-		if (!n)
-			return key_senderror(so, m, ENOBUFS);
-	}
-	newmsg = mtod(n, struct sadb_msg *);
-	newmsg->sadb_msg_errno = 0;
-	newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len);
-
-	off = 0;
-	mpolicy = m_pulldown(n, PFKEY_ALIGN8(sizeof(struct sadb_msg)),
-	    sizeof(*xpl), &off);
-	if (mpolicy == NULL) {
-		/* n is already freed */
-		return key_senderror(so, m, ENOBUFS);
-	}
-	xpl = (struct sadb_x_policy *)(mtod(mpolicy, caddr_t) + off);
-	if (xpl->sadb_x_policy_exttype != SADB_X_EXT_POLICY) {
-		m_freem(n);
-		return key_senderror(so, m, EINVAL);
-	}
-	xpl->sadb_x_policy_id = newsp->id;
-
-	m_freem(m);
-	return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
-    }
-}
-
-/*
- * SADB_SPDDELETE processing
- * receive
- *   <base, address(SD), policy(*)>
- * from the user(?), and set SADB_SASTATE_DEAD,
- * and send,
- *   <base, address(SD), policy(*)>
- * to the ikmpd.
- * policy(*) including the direction of the policy.
- *
- * m will always be freed.
- */
-static int
-key_spddelete(so, m, mhp)
-	struct socket *so;
-	struct mbuf *m;
-	const struct sadb_msghdr *mhp;
-{
-	struct sadb_address *src0, *dst0;
-	struct sadb_x_policy *xpl0;
-	struct secpolicyindex spidx;
-	struct secpolicy *sp;
-
-	/* sanity check */
-	if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
-		panic("key_spddelete: NULL pointer is passed.");
-
-	if (mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
-	    mhp->ext[SADB_EXT_ADDRESS_DST] == NULL ||
-	    mhp->ext[SADB_X_EXT_POLICY] == NULL) {
-		ipseclog((LOG_DEBUG, "key_spddelete: invalid message is passed.\n"));
-		return key_senderror(so, m, EINVAL);
-	}
-	if (mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
-	    mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address) ||
-	    mhp->extlen[SADB_X_EXT_POLICY] < sizeof(struct sadb_x_policy)) {
-		ipseclog((LOG_DEBUG, "key_spddelete: invalid message is passed.\n"));
-		return key_senderror(so, m, EINVAL);
-	}
-
-	src0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_SRC];
-	dst0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_DST];
-	xpl0 = (struct sadb_x_policy *)mhp->ext[SADB_X_EXT_POLICY];
-
-	/* make secindex */
-	/* XXX boundary check against sa_len */
-	KEY_SETSECSPIDX(src0 + 1,
-	                dst0 + 1,
-	                src0->sadb_address_prefixlen,
-	                dst0->sadb_address_prefixlen,
-	                src0->sadb_address_proto,
-	                &spidx);
-
-	/* checking the direciton. */
-	switch (xpl0->sadb_x_policy_dir) {
-	case IPSEC_DIR_INBOUND:
-	case IPSEC_DIR_OUTBOUND:
-		break;
-	default:
-		ipseclog((LOG_DEBUG, "key_spddelete: Invalid SP direction.\n"));
-		return key_senderror(so, m, EINVAL);
-	}
-
-	/* Is there SP in SPD ? */
-	if ((sp = key_getsp(&spidx, xpl0->sadb_x_policy_dir)) == NULL) {
-		ipseclog((LOG_DEBUG, "key_spddelete: no SP found.\n"));
-		return key_senderror(so, m, EINVAL);
-	}
-
-	if (sp->persist) {
-		ipseclog((LOG_DEBUG,
-		    "key_spddelete2: attempt to remove persistent SP:%u.\n",
-		    sp->id));
-		key_freesp(sp);	/* ref gained by key_getsp */
-		return key_senderror(so, m, EPERM);
-	}
-
-	/* save policy id to be returned. */
-	xpl0->sadb_x_policy_id = sp->id;
-
-	key_sp_dead(sp);
-	key_freesp(sp);	/* ref gained by key_getsp */
-	key_sp_unlink(sp);
-	sp = NULL;
-
-	/* invalidate all cached SPD pointers on pcb */
-	ipsec_invalpcbcacheall();
-
-    {
-	struct mbuf *n;
-	struct sadb_msg *newmsg;
-
-	/* create new sadb_msg to reply. */
-	n = key_gather_mbuf(m, mhp, 1, 4, SADB_EXT_RESERVED,
-	    SADB_X_EXT_POLICY, SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST);
-	if (!n)
-		return key_senderror(so, m, ENOBUFS);
-
-	newmsg = mtod(n, struct sadb_msg *);
-	newmsg->sadb_msg_errno = 0;
-	newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len);
-
-	m_freem(m);
-	return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
-    }
-}
-
-/*
- * SADB_SPDDELETE2 processing
- * receive
- *   <base, policy(*)>
- * from the user(?), and set SADB_SASTATE_DEAD,
- * and send,
- *   <base, policy(*)>
- * to the ikmpd.
- * policy(*) including the policy id.
- *
- * m will always be freed.
- */
-static int
-key_spddelete2(so, m, mhp)
-	struct socket *so;
-	struct mbuf *m;
-	const struct sadb_msghdr *mhp;
-{
-	u_int32_t id;
-	struct secpolicy *sp;
-
-	/* sanity check */
-	if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
-		panic("key_spddelete2: NULL pointer is passed.");
-
-	if (mhp->ext[SADB_X_EXT_POLICY] == NULL ||
-	    mhp->extlen[SADB_X_EXT_POLICY] < sizeof(struct sadb_x_policy)) {
-		ipseclog((LOG_DEBUG, "key_spddelete2: invalid message is passed.\n"));
-		return key_senderror(so, m, EINVAL);
-	}
-
-	id = ((struct sadb_x_policy *)mhp->ext[SADB_X_EXT_POLICY])->sadb_x_policy_id;
-
-	/* Is there SP in SPD ? */
-	if ((sp = key_getspbyid(id)) == NULL) {
-		ipseclog((LOG_DEBUG, "key_spddelete2: no SP found id:%u.\n",
-		    id));
-		return key_senderror(so, m, EINVAL);
-	}
-
-	if (sp->persist) {
-		ipseclog((LOG_DEBUG,
-		    "key_spddelete2: attempt to remove persistent SP:%u.\n",
-		    id));
-		key_freesp(sp);	/* ref gained by key_getspbyid */
-		return key_senderror(so, m, EPERM);
-	}
-
-	key_sp_dead(sp);
-	key_freesp(sp);	/* ref gained by key_getspbyid */
-	key_sp_unlink(sp);
-	sp = NULL;
-
-	/* invalidate all cached SPD pointers on pcb */
-	ipsec_invalpcbcacheall();
-
-    {
-	struct mbuf *n, *nn;
-	struct sadb_msg *newmsg;
-	int off, len;
-
-	/* create new sadb_msg to reply. */
-	len = PFKEY_ALIGN8(sizeof(struct sadb_msg));
-
-	if (len > MCLBYTES)
-		return key_senderror(so, m, ENOBUFS);
-	MGETHDR(n, M_DONTWAIT, MT_DATA);
-	if (n && len > MHLEN) {
-		MCLGET(n, M_DONTWAIT);
-		if ((n->m_flags & M_EXT) == 0) {
-			m_freem(n);
-			n = NULL;
-		}
-	}
-	if (!n)
-		return key_senderror(so, m, ENOBUFS);
-
-	n->m_len = len;
-	n->m_next = NULL;
-	off = 0;
-
-	m_copydata(m, 0, sizeof(struct sadb_msg), mtod(n, caddr_t) + off);
-	off += PFKEY_ALIGN8(sizeof(struct sadb_msg));
-
-#ifdef DIAGNOSTIC
-	if (off != len)
-		panic("length inconsistency in key_spddelete2");
-#endif
-
-	n->m_next = m_copym(m, mhp->extoff[SADB_X_EXT_POLICY],
-	    mhp->extlen[SADB_X_EXT_POLICY], M_DONTWAIT);
-	if (!n->m_next) {
-		m_freem(n);
-		return key_senderror(so, m, ENOBUFS);
-	}
-
-	n->m_pkthdr.len = 0;
-	for (nn = n; nn; nn = nn->m_next)
-		n->m_pkthdr.len += nn->m_len;
-
-	newmsg = mtod(n, struct sadb_msg *);
-	newmsg->sadb_msg_errno = 0;
-	newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len);
-
-	m_freem(m);
-	return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
-    }
-}
-
-/*
- * SADB_X_SPDGET processing
- * receive
- *   <base, policy(*)>
- * from the user(?),
- * and send,
- *   <base, address(SD), policy>
- * to the ikmpd.
- * policy(*) including direction of policy.
- *
- * m will always be freed.
- */
-static int
-key_spdget(so, m, mhp)
-	struct socket *so;
-	struct mbuf *m;
-	const struct sadb_msghdr *mhp;
-{
-	u_int32_t id;
-	struct secpolicy *sp;
-	struct mbuf *n;
-
-	/* sanity check */
-	if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
-		panic("key_spdget: NULL pointer is passed.");
-
-	if (mhp->ext[SADB_X_EXT_POLICY] == NULL ||
-	    mhp->extlen[SADB_X_EXT_POLICY] < sizeof(struct sadb_x_policy)) {
-		ipseclog((LOG_DEBUG, "key_spdget: invalid message is passed.\n"));
-		return key_senderror(so, m, EINVAL);
-	}
-
-	id = ((struct sadb_x_policy *)mhp->ext[SADB_X_EXT_POLICY])->sadb_x_policy_id;
-
-	/* Is there SP in SPD ? */
-	if ((sp = key_getspbyid(id)) == NULL) {
-		ipseclog((LOG_DEBUG, "key_spdget: no SP found id:%u.\n", id));
-		return key_senderror(so, m, ENOENT);
-	}
-
-	n = key_setdumpsp(sp, SADB_X_SPDGET, 0, mhp->msg->sadb_msg_pid);
-	key_freesp(sp);	/* ref gained by key_getspbyid */
-	if (n != NULL) {
-		m_freem(m);
-		return key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
-	} else
-		return key_senderror(so, m, ENOBUFS);
-}
-
-/*
- * SADB_X_SPDACQUIRE processing.
- * Acquire policy and SA(s) for a *OUTBOUND* packet.
- * send
- *   <base, policy(*)>
- * to KMD, and expect to receive
- *   <base> with SADB_X_SPDACQUIRE if error occured,
- * or
- *   <base, policy>
- * with SADB_X_SPDUPDATE from KMD by PF_KEY.
- * policy(*) is without policy requests.
- *
- *    0     : succeed
- *    others: error number
- */
-int
-key_spdacquire(sp)
-	struct secpolicy *sp;
-{
-	struct mbuf *result = NULL, *m;
-#ifndef IPSEC_NONBLOCK_ACQUIRE
-	struct secspacq *newspacq;
-#endif
-	int error = -1;
-
-	/* sanity check */
-	if (sp == NULL)
-		panic("key_spdacquire: NULL pointer is passed.");
-	if (sp->req != NULL)
-		panic("key_spdacquire: called but there is request.");
-	if (sp->policy != IPSEC_POLICY_IPSEC)
-		panic("key_spdacquire: policy mismathed. IPsec is expected.");
-	if (!sp->spidx) {
-		error = EOPNOTSUPP;
-		goto fail;
-	}
-
-#ifndef IPSEC_NONBLOCK_ACQUIRE
-	/* get an entry to check whether sent message or not. */
-	if ((newspacq = key_getspacq(sp->spidx)) != NULL) {
-		if (key_blockacq_count < newspacq->count) {
-			/* reset counter and do send message. */
-			newspacq->count = 0;
-		} else {
-			/* increment counter and do nothing. */
-			newspacq->count++;
-			return 0;
-		}
-	} else {
-		/* make new entry for blocking to send SADB_ACQUIRE. */
-		if ((newspacq = key_newspacq(sp->spidx)) == NULL)
-			return ENOBUFS;
-
-		/* add to acqtree */
-		LIST_INSERT_HEAD(&spacqtree, newspacq, chain);
-	}
-#endif
-
-	/* create new sadb_msg to reply. */
-	m = key_setsadbmsg(SADB_X_SPDACQUIRE, 0, 0, 0, 0, 0);
-	if (!m) {
-		error = ENOBUFS;
-		goto fail;
-	}
-	result = m;
-
-	/* set sadb_x_policy */
-	if (sp) {
-		m = key_setsadbxpolicy(sp->policy, sp->dir, sp->id);
-		if (!m) {
-			error = ENOBUFS;
-			goto fail;
-		}
-		m_cat(result, m);
-	}
-
-	result->m_pkthdr.len = 0;
-	for (m = result; m; m = m->m_next)
-		result->m_pkthdr.len += m->m_len;
-
-	mtod(result, struct sadb_msg *)->sadb_msg_len =
-	    PFKEY_UNIT64(result->m_pkthdr.len);
-
-	return key_sendup_mbuf(NULL, result, KEY_SENDUP_REGISTERED);
-
-fail:
-	if (result)
-		m_freem(result);
-	return error;
-}
-
-/*
- * SADB_SPDFLUSH processing
- * receive
- *   <base>
- * from the user, and free all entries in secpctree.
- * and send,
- *   <base>
- * to the user.
- * NOTE: what to do is only marking SADB_SASTATE_DEAD.
- *
- * m will always be freed.
- */
-static int
-key_spdflush(so, m, mhp)
-	struct socket *so;
-	struct mbuf *m;
-	const struct sadb_msghdr *mhp;
-{
-	struct sadb_msg *newmsg;
-	struct secpolicy *sp, *nextsp;
-
-	/* sanity check */
-	if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
-		panic("key_spdflush: NULL pointer is passed.");
-
-	if (m->m_len != PFKEY_ALIGN8(sizeof(struct sadb_msg)))
-		return key_senderror(so, m, EINVAL);
-
-	for (sp = TAILQ_FIRST(&sptailq); sp; sp = nextsp) {
-		nextsp = TAILQ_NEXT(sp, tailq);
-		if (sp->persist)
-			continue;
-		if (sp->state == IPSEC_SPSTATE_DEAD)
-			continue;
-		key_sp_dead(sp);
-		key_sp_unlink(sp);
-		sp = NULL;
-	}
-
-	/* invalidate all cached SPD pointers on pcb */
-	ipsec_invalpcbcacheall();
-
-	if (sizeof(struct sadb_msg) > m->m_len + M_TRAILINGSPACE(m)) {
-		ipseclog((LOG_DEBUG, "key_spdflush: No more memory.\n"));
-		return key_senderror(so, m, ENOBUFS);
-	}
-
-	if (m->m_next)
-		m_freem(m->m_next);
-	m->m_next = NULL;
-	m->m_pkthdr.len = m->m_len = PFKEY_ALIGN8(sizeof(struct sadb_msg));
-	newmsg = mtod(m, struct sadb_msg *);
-	newmsg->sadb_msg_errno = 0;
-	newmsg->sadb_msg_len = PFKEY_UNIT64(m->m_pkthdr.len);
-
-	return key_sendup_mbuf(so, m, KEY_SENDUP_ALL);
-}
-
-/*
- * SADB_SPDDUMP processing
- * receive
- *   <base>
- * from the user, and dump all SP leaves
- * and send,
- *   <base> .....
- * to the ikmpd.
- *
- * m will always be freed.
- */
-static int
-key_spddump(so, m, mhp)
-	struct socket *so;
-	struct mbuf *m;
-	const struct sadb_msghdr *mhp;
-{
-	struct secpolicy *sp;
-	int cnt;
-	u_int dir;
-	struct mbuf *n;
-
-	/* sanity check */
-	if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
-		panic("key_spddump: NULL pointer is passed.");
-
-	/* search SPD entry and get buffer size. */
-	cnt = 0;
-	for (dir = 0; dir < IPSEC_DIR_MAX; dir++) {
-		LIST_FOREACH(sp, &sptree[dir], chain) {
-			cnt++;
-		}
-	}
-
-	if (cnt == 0)
-		return key_senderror(so, m, ENOENT);
-
-	for (dir = 0; dir < IPSEC_DIR_MAX; dir++) {
-		LIST_FOREACH(sp, &sptree[dir], chain) {
-			--cnt;
-			n = key_setdumpsp(sp, SADB_X_SPDDUMP, cnt,
-			    mhp->msg->sadb_msg_pid);
-
-			if (n)
-				key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
-		}
-	}
-
-	m_freem(m);
-	return 0;
-}
-
-static struct mbuf *
-key_setdumpsp(sp, type, seq, pid)
-	struct secpolicy *sp;
-	u_int8_t type;
-	u_int32_t seq, pid;
-{
-	struct mbuf *result = NULL, *m;
-
-	m = key_setsadbmsg(type, 0, SADB_SATYPE_UNSPEC, seq, pid, sp->refcnt);
-	if (!m)
-		goto fail;
-	result = m;
-
-	if (sp->spidx) {
-		m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
-		    (struct sockaddr *)&sp->spidx->src, sp->spidx->prefs,
-		    sp->spidx->ul_proto);
-		if (!m)
-			goto fail;
-		m_cat(result, m);
-
-		m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
-		    (struct sockaddr *)&sp->spidx->dst, sp->spidx->prefd,
-		    sp->spidx->ul_proto);
-		if (!m)
-			goto fail;
-		m_cat(result, m);
-	}
-
-	m = key_sp2msg(sp);
-	if (!m)
-		goto fail;
-	m_cat(result, m);
-
-	m = key_setsadblifetime(SADB_EXT_LIFETIME_CURRENT,
-		0, 0, (u_int64_t)sp->created, (u_int64_t)sp->lastused);
-	if (!m)
-		goto fail;
-	m_cat(result, m);
-
-	m = key_setsadblifetime(SADB_EXT_LIFETIME_HARD,
-		0, 0, (u_int64_t)sp->lifetime, (u_int64_t)sp->validtime);
-	if (!m)
-		goto fail;
-	m_cat(result, m);
-
-	if ((result->m_flags & M_PKTHDR) == 0)
-		goto fail;
-
-	if (result->m_len < sizeof(struct sadb_msg)) {
-		result = m_pullup(result, sizeof(struct sadb_msg));
-		if (result == NULL)
-			goto fail;
-	}
-
-	result->m_pkthdr.len = 0;
-	for (m = result; m; m = m->m_next)
-		result->m_pkthdr.len += m->m_len;
-
-	mtod(result, struct sadb_msg *)->sadb_msg_len =
-	    PFKEY_UNIT64(result->m_pkthdr.len);
-
-	return result;
-
-fail:
-	m_freem(result);
-	return NULL;
-}
-
-/*
- * get PFKEY message length for security policy and request.
- */
-static u_int
-key_getspreqmsglen(sp)
-	struct secpolicy *sp;
-{
-	u_int tlen;
-
-	tlen = sizeof(struct sadb_x_policy);
-
-	/* if is the policy for ipsec ? */
-	if (sp->policy != IPSEC_POLICY_IPSEC)
-		return tlen;
-
-	/* get length of ipsec requests */
-    {
-	struct ipsecrequest *isr;
-	int len;
-
-	for (isr = sp->req; isr != NULL; isr = isr->next) {
-		len = sizeof(struct sadb_x_ipsecrequest)
-			+ isr->saidx.src.ss_len
-			+ isr->saidx.dst.ss_len;
-
-		tlen += PFKEY_ALIGN8(len);
-	}
-    }
-
-	return tlen;
-}
-
-/*
- * SADB_X_SPDEXPIRE processing
- * send
- *   <base, address(SD), lifetime(CH), policy>
- * to KMD by PF_KEY.
- *
- * OUT:	0	: succeed
- *	others	: error number
- */
-static int
-key_spdexpire(sp)
-	struct secpolicy *sp;
-{
-	int s;
-	struct mbuf *result = NULL, *m;
-	int len;
-	int error = -1;
-	struct sadb_lifetime *lt;
-
-	/* XXX: Why do we lock ? */
-	s = splnet();	/*called from softclock()*/
-
-	/* sanity check */
-	if (sp == NULL)
-		panic("key_spdexpire: NULL pointer is passed.");
-
-	/* set msg header */
-	m = key_setsadbmsg(SADB_X_SPDEXPIRE, 0, 0, 0, 0, 0);
-	if (!m) {
-		error = ENOBUFS;
-		goto fail;
-	}
-	result = m;
-
-	/* create lifetime extension (current and hard) */
-	len = PFKEY_ALIGN8(sizeof(*lt)) * 2;
-	m = key_alloc_mbuf(len);
-	if (!m || m->m_next) {	/*XXX*/
-		if (m)
-			m_freem(m);
-		error = ENOBUFS;
-		goto fail;
-	}
-	bzero(mtod(m, caddr_t), len);
-	lt = mtod(m, struct sadb_lifetime *);
-	lt->sadb_lifetime_len = PFKEY_UNIT64(sizeof(struct sadb_lifetime));
-	lt->sadb_lifetime_exttype = SADB_EXT_LIFETIME_CURRENT;
-	lt->sadb_lifetime_allocations = 0;
-	lt->sadb_lifetime_bytes = 0;
-	lt->sadb_lifetime_addtime = sp->created;
-	lt->sadb_lifetime_usetime = sp->lastused;
-	lt = (struct sadb_lifetime *)(mtod(m, caddr_t) + len / 2);
-	lt->sadb_lifetime_len = PFKEY_UNIT64(sizeof(struct sadb_lifetime));
-	lt->sadb_lifetime_exttype = SADB_EXT_LIFETIME_HARD;
-	lt->sadb_lifetime_allocations = 0;
-	lt->sadb_lifetime_bytes = 0;
-	lt->sadb_lifetime_addtime = sp->lifetime;
-	lt->sadb_lifetime_usetime = sp->validtime;
-	m_cat(result, m);
-
-	/* set sadb_address for source */
-	if (sp->spidx) {
-		m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
-		    (struct sockaddr *)&sp->spidx->src,
-		    sp->spidx->prefs, sp->spidx->ul_proto);
-		if (!m) {
-			error = ENOBUFS;
-			goto fail;
-		}
-		m_cat(result, m);
-
-		/* set sadb_address for destination */
-		m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
-		    (struct sockaddr *)&sp->spidx->dst,
-		    sp->spidx->prefd, sp->spidx->ul_proto);
-		if (!m) {
-			error = ENOBUFS;
-			goto fail;
-		}
-		m_cat(result, m);
-	}
-
-	/* set secpolicy */
-	m = key_sp2msg(sp);
-	if (!m) {
-		error = ENOBUFS;
-		goto fail;
-	}
-	m_cat(result, m);
-
-	if ((result->m_flags & M_PKTHDR) == 0) {
-		error = EINVAL;
-		goto fail;
-	}
-
-	if (result->m_len < sizeof(struct sadb_msg)) {
-		result = m_pullup(result, sizeof(struct sadb_msg));
-		if (result == NULL) {
-			error = ENOBUFS;
-			goto fail;
-		}
-	}
-
-	result->m_pkthdr.len = 0;
-	for (m = result; m; m = m->m_next)
-		result->m_pkthdr.len += m->m_len;
-
-	mtod(result, struct sadb_msg *)->sadb_msg_len =
-	    PFKEY_UNIT64(result->m_pkthdr.len);
-
-	splx(s);
-	return key_sendup_mbuf(NULL, result, KEY_SENDUP_REGISTERED);
-
- fail:
-	if (result)
-		m_freem(result);
-	splx(s);
-	return error;
-}
-
-/* %%% SAD management */
-/*
- * allocating a memory for new SA head, and copy from the values of mhp.
- * OUT:	NULL	: failure due to the lack of memory.
- *	others	: pointer to new SA head.
- */
-static struct secashead *
-key_newsah(saidx)
-	struct secasindex *saidx;
-{
-	struct secashead *newsah;
-
-	/* sanity check */
-	if (saidx == NULL)
-		panic("key_newsaidx: NULL pointer is passed.");
-
-	newsah = keydb_newsecashead();
-	if (newsah == NULL)
-		return NULL;
-
-	bcopy(saidx, &newsah->saidx, sizeof(newsah->saidx));
-
-	/* add to saidxtree */
-	newsah->state = SADB_SASTATE_MATURE;
-	LIST_INSERT_HEAD(&sahtree, newsah, chain);
-
-	return (newsah);
-}
-
-/*
- * delete SA index and all SA registerd.
- */
-static void
-key_delsah(sah)
-	struct secashead *sah;
-{
-	struct secasvar *sav, *nextsav;
-	u_int stateidx, state;
-	int s;
-	int zombie = 0;
-
-	/* sanity check */
-	if (sah == NULL)
-		panic("key_delsah: NULL pointer is passed.");
-
-	s = splnet();	/*called from softclock()*/
-
-	/* searching all SA registerd in the secindex. */
-	for (stateidx = 0;
-	     stateidx < _ARRAYLEN(saorder_state_any);
-	     stateidx++) {
-
-		state = saorder_state_any[stateidx];
-		for (sav = LIST_FIRST(&sah->savtree[state]);
-		     sav != NULL;
-		     sav = nextsav) {
-
-			nextsav = LIST_NEXT(sav, chain);
-
-			if (sav->refcnt > 0) {
-				/* give up to delete this sa */
-				zombie++;
-				continue;
-			}
-
-			/* sanity check */
-			KEY_CHKSASTATE(state, sav->state, "key_delsah");
-
-			/* remove back pointer */
-			sav->sah = NULL;
-
-			key_freesav(sav);
-
-			sav = NULL;
-		}
-	}
-
-	/* delete sah only if there's no sav. */
-	if (zombie) {
-		splx(s);
-		return;
-	}
-
-	if (sah->sa_route.ro_rt) {
-		RTFREE(sah->sa_route.ro_rt);
-		sah->sa_route.ro_rt = (struct rtentry *)NULL;
-	}
-
-	/* remove from tree of SA index */
-	if (__LIST_CHAINED(sah))
-		LIST_REMOVE(sah, chain);
-
-	KFREE(sah);
-
-	splx(s);
-	return;
-}
-
-/*
- * allocating a new SA with LARVAL state.  key_add() and key_getspi() call,
- * and copy the values of mhp into new buffer.
- * When SAD message type is GETSPI:
- *	to set sequence number from acq_seq++,
- *	to set zero to SPI.
- *	not to call key_setsava().
- * OUT:	NULL	: fail
- *	others	: pointer to new secasvar.
- *
- * does not modify mbuf.  does not free mbuf on error.
- */
-static struct secasvar *
-key_newsav(m, mhp, sah, errp)
-	struct mbuf *m;
-	const struct sadb_msghdr *mhp;
-	struct secashead *sah;
-	int *errp;
-{
-	struct secasvar *newsav;
-	const struct sadb_sa *xsa;
-
-	/* sanity check */
-	if (m == NULL || mhp == NULL || mhp->msg == NULL || sah == NULL)
-		panic("key_newsa: NULL pointer is passed.");
-
-	newsav = keydb_newsecasvar();
-	if (newsav == NULL) {
-		ipseclog((LOG_DEBUG, "key_newsa: No more memory.\n"));
-		*errp = ENOBUFS;
-		return NULL;
-	}
-
-	switch (mhp->msg->sadb_msg_type) {
-	case SADB_GETSPI:
-		key_setspi(newsav, 0);
-
-#ifdef IPSEC_DOSEQCHECK
-		/* sync sequence number */
-		if (mhp->msg->sadb_msg_seq == 0)
-			newsav->seq =
-				(acq_seq = (acq_seq == ~0 ? 1 : ++acq_seq));
-		else
-#endif
-			newsav->seq = mhp->msg->sadb_msg_seq;
-		break;
-
-	case SADB_ADD:
-		/* sanity check */
-		if (mhp->ext[SADB_EXT_SA] == NULL) {
-			KFREE(newsav);
-			ipseclog((LOG_DEBUG, "key_newsa: invalid message is passed.\n"));
-			*errp = EINVAL;
-			return NULL;
-		}
-		xsa = (const struct sadb_sa *)mhp->ext[SADB_EXT_SA];
-		key_setspi(newsav, xsa->sadb_sa_spi);
-		newsav->seq = mhp->msg->sadb_msg_seq;
-		break;
-	default:
-		KFREE(newsav);
-		*errp = EINVAL;
-		return NULL;
-	}
-
-	/* copy sav values */
-	if (mhp->msg->sadb_msg_type != SADB_GETSPI) {
-		*errp = key_setsaval(newsav, m, mhp);
-		if (*errp) {
-			KFREE(newsav);
-			return NULL;
-		}
-	}
-
-	/* reset created */
-	newsav->created = time_second;
-
-	newsav->pid = mhp->msg->sadb_msg_pid;
-
-	/* add to satree */
-	newsav->sah = sah;
-	newsav->refcnt = 1;
-	newsav->state = SADB_SASTATE_LARVAL;
-	LIST_INSERT_TAIL(&sah->savtree[SADB_SASTATE_LARVAL], newsav,
-			secasvar, chain);
-
-	return newsav;
-}
-
-/*
- * search SAD.
- * OUT:
- *	NULL	: not found
- *	others	: found, pointer to a SA.
- */
-static struct secashead *
-key_getsah(saidx)
-	struct secasindex *saidx;
-{
-	struct secashead *sah;
-
-	LIST_FOREACH(sah, &sahtree, chain) {
-		if (sah->state == SADB_SASTATE_DEAD)
-			continue;
-		if (key_cmpsaidx(&sah->saidx, saidx, CMP_MODE_REQID))
-			return sah;
-	}
-
-	return NULL;
-}
-
-/*
- * check not to be duplicated SPI.
- * NOTE: this function is too slow due to searching all SAD.
- * OUT:
- *	NULL	: not found
- *	others	: found, pointer to a SA.
- */
-static struct secasvar *
-key_checkspidup(saidx, spi)
-	struct secasindex *saidx;
-	u_int32_t spi;
-{
-	struct secasvar *sav;
-	u_int stateidx, state;
-
-	/* check address family */
-	if (saidx->src.ss_family != saidx->dst.ss_family) {
-		ipseclog((LOG_DEBUG, "key_checkspidup: address family mismatched.\n"));
-		return NULL;
-	}
-
-	/* check all SAD */
-	LIST_FOREACH(sav, &spihash[SPIHASH(spi)], spihash) {
-		if (sav->spi != spi)
-			continue;
-		for (stateidx = 0;
-		     stateidx < _ARRAYLEN(saorder_state_alive);
-		     stateidx++) {
-			state = saorder_state_alive[stateidx];
-			if (sav->state == state &&
-			    key_ismyaddr((struct sockaddr *)&sav->sah->saidx.dst))
-				return sav;
-		}
-	}
-
-	return NULL;
-}
-
-static void
-key_setspi(sav, spi)
-	struct secasvar *sav;
-	u_int32_t spi;
-{
-	int s;
-
-	s = splnet();
-	sav->spi = spi;
-	if (sav->spihash.le_prev || sav->spihash.le_next)
-		LIST_REMOVE(sav, spihash);
-	LIST_INSERT_HEAD(&spihash[SPIHASH(spi)], sav, spihash);
-	splx(s);
-}
-
-/*
- * search SAD litmited alive SA, protocol, SPI.
- * OUT:
- *	NULL	: not found
- *	others	: found, pointer to a SA.
- */
-static struct secasvar *
-key_getsavbyspi(sah, spi)
-	struct secashead *sah;
-	u_int32_t spi;
-{
-	struct secasvar *sav, *match;
-	u_int stateidx, state, matchidx;
-
-	match = NULL;
-	matchidx = _ARRAYLEN(saorder_state_alive);
-	LIST_FOREACH(sav, &spihash[SPIHASH(spi)], spihash) {
-		if (sav->spi != spi)
-			continue;
-		if (sav->sah != sah)
-			continue;
-		for (stateidx = 0; stateidx < matchidx; stateidx++) {
-			state = saorder_state_alive[stateidx];
-			if (sav->state == state) {
-				match = sav;
-				matchidx = stateidx;
-				break;
-			}
-		}
-	}
-
-	return match;
-}
-
-/*
- * copy SA values from PF_KEY message except *SPI, SEQ, PID, STATE and TYPE*.
- * You must update these if need.
- * OUT:	0:	success.
- *	!0:	failure.
- *
- * does not modify mbuf.  does not free mbuf on error.
- */
-static int
-key_setsaval(sav, m, mhp)
-	struct secasvar *sav;
-	struct mbuf *m;
-	const struct sadb_msghdr *mhp;
-{
-#ifdef IPSEC_ESP
-	const struct esp_algorithm *algo;
-#endif
-	int error = 0;
-
-	/* sanity check */
-	if (m == NULL || mhp == NULL || mhp->msg == NULL)
-		panic("key_setsaval: NULL pointer is passed.");
-
-	/* initialization */
-	sav->replay = NULL;
-	sav->key_auth = NULL;
-	sav->key_enc = NULL;
-	sav->sched = NULL;
-	sav->schedlen = 0;
-	sav->iv = NULL;
-	sav->lft_c = NULL;
-	sav->lft_h = NULL;
-	sav->lft_s = NULL;
-
-	/* SA */
-	if (mhp->ext[SADB_EXT_SA] != NULL) {
-		const struct sadb_sa *sa0;
-
-		sa0 = (const struct sadb_sa *)mhp->ext[SADB_EXT_SA];
-		if (mhp->extlen[SADB_EXT_SA] < sizeof(*sa0)) {
-			error = EINVAL;
-			goto fail;
-		}
-
-		sav->alg_auth = sa0->sadb_sa_auth;
-		sav->alg_enc = sa0->sadb_sa_encrypt;
-		sav->flags = sa0->sadb_sa_flags;
-
-		/* replay window */
-		if ((sa0->sadb_sa_flags & SADB_X_EXT_OLD) == 0) {
-			sav->replay = keydb_newsecreplay(sa0->sadb_sa_replay);
-			if (sav->replay == NULL) {
-				ipseclog((LOG_DEBUG, "key_setsaval: No more memory.\n"));
-				error = ENOBUFS;
-				goto fail;
-			}
-		}
-	}
-
-	/* Authentication keys */
-	if (mhp->ext[SADB_EXT_KEY_AUTH] != NULL) {
-		const struct sadb_key *key0;
-		int len;
-
-		key0 = (const struct sadb_key *)mhp->ext[SADB_EXT_KEY_AUTH];
-		len = mhp->extlen[SADB_EXT_KEY_AUTH];
-
-		error = 0;
-		if (len < sizeof(*key0)) {
-			error = EINVAL;
-			goto fail;
-		}
-		switch (mhp->msg->sadb_msg_satype) {
-		case SADB_SATYPE_AH:
-		case SADB_SATYPE_ESP:
-		case SADB_X_SATYPE_TCPSIGNATURE:
-			if (len == PFKEY_ALIGN8(sizeof(struct sadb_key)) &&
-			    sav->alg_auth != SADB_X_AALG_NULL)
-				error = EINVAL;
-			break;
-		case SADB_X_SATYPE_IPCOMP:
-		default:
-			error = EINVAL;
-			break;
-		}
-		if (error) {
-			ipseclog((LOG_DEBUG, "key_setsaval: invalid key_auth values.\n"));
-			goto fail;
-		}
-
-		sav->key_auth = (struct sadb_key *)key_newbuf(key0, len);
-		if (sav->key_auth == NULL) {
-			ipseclog((LOG_DEBUG, "key_setsaval: No more memory.\n"));
-			error = ENOBUFS;
-			goto fail;
-		}
-	}
-
-	/* Encryption key */
-	if (mhp->ext[SADB_EXT_KEY_ENCRYPT] != NULL) {
-		const struct sadb_key *key0;
-		int len;
-
-		key0 = (const struct sadb_key *)mhp->ext[SADB_EXT_KEY_ENCRYPT];
-		len = mhp->extlen[SADB_EXT_KEY_ENCRYPT];
-
-		error = 0;
-		if (len < sizeof(*key0)) {
-			error = EINVAL;
-			goto fail;
-		}
-		switch (mhp->msg->sadb_msg_satype) {
-		case SADB_SATYPE_ESP:
-			if (len == PFKEY_ALIGN8(sizeof(struct sadb_key)) &&
-			    sav->alg_enc != SADB_EALG_NULL) {
-				error = EINVAL;
-				break;
-			}
-			sav->key_enc = (struct sadb_key *)key_newbuf(key0, len);
-			if (sav->key_enc == NULL) {
-				ipseclog((LOG_DEBUG, "key_setsaval: No more memory.\n"));
-				error = ENOBUFS;
-				goto fail;
-			}
-			break;
-		case SADB_X_SATYPE_IPCOMP:
-			if (len != PFKEY_ALIGN8(sizeof(struct sadb_key)))
-				error = EINVAL;
-			sav->key_enc = NULL;	/*just in case*/
-			break;
-		case SADB_SATYPE_AH:
-		case SADB_X_SATYPE_TCPSIGNATURE:
-		default:
-			error = EINVAL;
-			break;
-		}
-		if (error) {
-			ipseclog((LOG_DEBUG, "key_setsatval: invalid key_enc value.\n"));
-			goto fail;
-		}
-	}
-
-	/* set iv */
-	sav->ivlen = 0;
-
-	switch (mhp->msg->sadb_msg_satype) {
-	case SADB_SATYPE_ESP:
-#ifdef IPSEC_ESP
-		algo = esp_algorithm_lookup(sav->alg_enc);
-		if (algo && algo->ivlen)
-			sav->ivlen = (*algo->ivlen)(algo, sav);
-		if (sav->ivlen == 0)
-			break;
-		KMALLOC(sav->iv, caddr_t, sav->ivlen);
-		if (sav->iv == 0) {
-			ipseclog((LOG_DEBUG, "key_setsaval: No more memory.\n"));
-			error = ENOBUFS;
-			goto fail;
-		}
-
-		/* initialize */
-		key_randomfill(sav->iv, sav->ivlen);
-#endif
-		break;
-	case SADB_SATYPE_AH:
-	case SADB_X_SATYPE_IPCOMP:
-	case SADB_X_SATYPE_TCPSIGNATURE:
-		break;
-	default:
-		ipseclog((LOG_DEBUG, "key_setsaval: invalid SA type.\n"));
-		error = EINVAL;
-		goto fail;
-	}
-
-	/* reset created */
-	sav->created = time_second;
-
-	/* make lifetime for CURRENT */
-	KMALLOC(sav->lft_c, struct sadb_lifetime *,
-	    sizeof(struct sadb_lifetime));
-	if (sav->lft_c == NULL) {
-		ipseclog((LOG_DEBUG, "key_setsaval: No more memory.\n"));
-		error = ENOBUFS;
-		goto fail;
-	}
-
-	sav->lft_c->sadb_lifetime_len =
-	    PFKEY_UNIT64(sizeof(struct sadb_lifetime));
-	sav->lft_c->sadb_lifetime_exttype = SADB_EXT_LIFETIME_CURRENT;
-	sav->lft_c->sadb_lifetime_allocations = 0;
-	sav->lft_c->sadb_lifetime_bytes = 0;
-	sav->lft_c->sadb_lifetime_addtime = time_second;
-	sav->lft_c->sadb_lifetime_usetime = 0;
-
-	/* lifetimes for HARD and SOFT */
-    {
-	const struct sadb_lifetime *lft0;
-
-	lft0 = (struct sadb_lifetime *)mhp->ext[SADB_EXT_LIFETIME_HARD];
-	if (lft0 != NULL) {
-		if (mhp->extlen[SADB_EXT_LIFETIME_HARD] < sizeof(*lft0)) {
-			error = EINVAL;
-			goto fail;
-		}
-		sav->lft_h = (struct sadb_lifetime *)key_newbuf(lft0,
-		    sizeof(*lft0));
-		if (sav->lft_h == NULL) {
-			ipseclog((LOG_DEBUG, "key_setsaval: No more memory.\n"));
-			error = ENOBUFS;
-			goto fail;
-		}
-		/* we no longer support byte lifetime */
-		if (sav->lft_h->sadb_lifetime_bytes) {
-			error = EINVAL;
-			goto fail;
-		}
-		/* initialize? */
-	}
-
-	lft0 = (struct sadb_lifetime *)mhp->ext[SADB_EXT_LIFETIME_SOFT];
-	if (lft0 != NULL) {
-		if (mhp->extlen[SADB_EXT_LIFETIME_SOFT] < sizeof(*lft0)) {
-			error = EINVAL;
-			goto fail;
-		}
-		sav->lft_s = (struct sadb_lifetime *)key_newbuf(lft0,
-		    sizeof(*lft0));
-		if (sav->lft_s == NULL) {
-			ipseclog((LOG_DEBUG, "key_setsaval: No more memory.\n"));
-			error = ENOBUFS;
-			goto fail;
-		}
-		/* we no longer support byte lifetime */
-		if (sav->lft_s->sadb_lifetime_bytes) {
-			error = EINVAL;
-			goto fail;
-		}
-		/* initialize? */
-	}
-    }
-
-	return 0;
-
- fail:
-	/* initialization */
-	if (sav->replay != NULL) {
-		keydb_delsecreplay(sav->replay);
-		sav->replay = NULL;
-	}
-	if (sav->key_auth != NULL) {
-		bzero(_KEYBUF(sav->key_auth), _KEYLEN(sav->key_auth));
-		KFREE(sav->key_auth);
-		sav->key_auth = NULL;
-	}
-	if (sav->key_enc != NULL) {
-		bzero(_KEYBUF(sav->key_enc), _KEYLEN(sav->key_enc));
-		KFREE(sav->key_enc);
-		sav->key_enc = NULL;
-	}
-	if (sav->sched) {
-		bzero(sav->sched, sav->schedlen);
-		KFREE(sav->sched);
-		sav->sched = NULL;
-	}
-	if (sav->iv != NULL) {
-		KFREE(sav->iv);
-		sav->iv = NULL;
-	}
-	if (sav->lft_c != NULL) {
-		KFREE(sav->lft_c);
-		sav->lft_c = NULL;
-	}
-	if (sav->lft_h != NULL) {
-		KFREE(sav->lft_h);
-		sav->lft_h = NULL;
-	}
-	if (sav->lft_s != NULL) {
-		KFREE(sav->lft_s);
-		sav->lft_s = NULL;
-	}
-
-	return error;
-}
-
-/*
- * validation with a secasvar entry, and set SADB_SATYPE_MATURE.
- * OUT:	0:	valid
- *	other:	errno
- */
-static int
-key_mature(sav)
-	struct secasvar *sav;
-{
-	int mature;
-	int checkmask = 0;	/* 2^0: ealg  2^1: aalg  2^2: calg */
-	int mustmask = 0;	/* 2^0: ealg  2^1: aalg  2^2: calg */
-
-	mature = 0;
-
-	/* check SPI value */
-	switch (sav->sah->saidx.proto) {
-	case IPPROTO_ESP:
-	case IPPROTO_AH:
-		if (ntohl(sav->spi) >= 0 && ntohl(sav->spi) <= 255) {
-			ipseclog((LOG_DEBUG,
-			    "key_mature: illegal range of SPI %u.\n",
-			    (u_int32_t)ntohl(sav->spi)));
-			return EINVAL;
-		}
-		break;
-	}
-
-	/* check satype */
-	switch (sav->sah->saidx.proto) {
-	case IPPROTO_ESP:
-		/* check flags */
-		if ((sav->flags & SADB_X_EXT_OLD) &&
-		    (sav->flags & SADB_X_EXT_DERIV)) {
-			ipseclog((LOG_DEBUG, "key_mature: "
-			    "invalid flag (derived) given to old-esp.\n"));
-			return EINVAL;
-		}
-		if (sav->alg_auth == SADB_AALG_NONE)
-			checkmask = 1;
-		else
-			checkmask = 3;
-		mustmask = 1;
-		break;
-	case IPPROTO_AH:
-		/* check flags */
-		if (sav->flags & SADB_X_EXT_DERIV) {
-			ipseclog((LOG_DEBUG, "key_mature: "
-			    "invalid flag (derived) given to AH SA.\n"));
-			return EINVAL;
-		}
-		if (sav->alg_enc != SADB_EALG_NONE) {
-			ipseclog((LOG_DEBUG, "key_mature: "
-			    "protocol and algorithm mismated.\n"));
-			return (EINVAL);
-		}
-		checkmask = 2;
-		mustmask = 2;
-		break;
-	case IPPROTO_IPCOMP:
-		if (sav->alg_auth != SADB_AALG_NONE) {
-			ipseclog((LOG_DEBUG, "key_mature: "
-				"protocol and algorithm mismated.\n"));
-			return (EINVAL);
-		}
-		if ((sav->flags & SADB_X_EXT_RAWCPI) == 0 &&
-		    ntohl(sav->spi) >= 0x10000) {
-			ipseclog((LOG_DEBUG, "key_mature: invalid cpi for IPComp.\n"));
-			return (EINVAL);
-		}
-		checkmask = 4;
-		mustmask = 4;
-		break;
-	case IPPROTO_TCP:
-		if (sav->alg_auth != SADB_X_AALG_TCP_MD5) {
-			ipseclog((LOG_DEBUG, "key_mature: unsupported authentication algorithm %u\n",
-			    sav->alg_auth));
-			return (EINVAL);
-		}
-		if (sav->alg_enc != SADB_EALG_NONE) {
-			ipseclog((LOG_DEBUG, "%s: protocol and algorithm "
-				"mismated.\n", __func__));
-			return(EINVAL);
-		}
-		if (sav->spi != htonl(0x1000)) {
-			ipseclog((LOG_DEBUG, "key_mature: SPI must be TCP_SIG_SPI (0x1000)\n"));
-			return (EINVAL);
-		}
-		checkmask = 2;
-		mustmask = 2;
-		break;
-	default:
-		ipseclog((LOG_DEBUG, "key_mature: Invalid satype.\n"));
-		return EPROTONOSUPPORT;
-	}
-
-	/* check authentication algorithm */
-	if ((checkmask & 2) != 0) {
-		const struct ah_algorithm *algo;
-		int keylen;
-
-		algo = ah_algorithm_lookup(sav->alg_auth);
-		if (!algo) {
-			ipseclog((LOG_DEBUG, "key_mature: "
-			    "unknown authentication algorithm.\n"));
-			return EINVAL;
-		}
-
-		/* algorithm-dependent check */
-		if (sav->key_auth)
-			keylen = sav->key_auth->sadb_key_bits;
-		else
-			keylen = 0;
-		if (keylen < algo->keymin || algo->keymax < keylen) {
-			ipseclog((LOG_DEBUG,
-			    "key_mature: invalid AH key length %d "
-			    "(%d-%d allowed)\n",
-			    keylen, algo->keymin, algo->keymax));
-			return EINVAL;
-		}
-
-		if (algo->mature) {
-			if ((*algo->mature)(sav)) {
-				/* message generated in per-algorithm function*/
-				return EINVAL;
-			} else
-				mature = SADB_SATYPE_AH;
-		}
-
-		if ((mustmask & 2) != 0 &&  mature != SADB_SATYPE_AH) {
-			ipseclog((LOG_DEBUG, "key_mature: no satisfy algorithm for AH\n"));
-			return EINVAL;
-		}
-	}
-
-	/* check encryption algorithm */
-	if ((checkmask & 1) != 0) {
-#ifdef IPSEC_ESP
-		const struct esp_algorithm *algo;
-		int keylen;
-
-		algo = esp_algorithm_lookup(sav->alg_enc);
-		if (!algo) {
-			ipseclog((LOG_DEBUG, "key_mature: unknown encryption algorithm.\n"));
-			return EINVAL;
-		}
-
-		/* algorithm-dependent check */
-		if (sav->key_enc)
-			keylen = sav->key_enc->sadb_key_bits;
-		else
-			keylen = 0;
-		if (keylen < algo->keymin || algo->keymax < keylen) {
-			ipseclog((LOG_DEBUG,
-			    "key_mature: invalid ESP key length %d "
-			    "(%d-%d allowed)\n",
-			    keylen, algo->keymin, algo->keymax));
-			return EINVAL;
-		}
-
-		if (algo->mature) {
-			if ((*algo->mature)(sav)) {
-				/* message generated in per-algorithm function*/
-				return EINVAL;
-			} else
-				mature = SADB_SATYPE_ESP;
-		}
-
-		if ((mustmask & 1) != 0 &&  mature != SADB_SATYPE_ESP) {
-			ipseclog((LOG_DEBUG, "key_mature: no satisfy algorithm for ESP\n"));
-			return EINVAL;
-		}
-#else /*IPSEC_ESP*/
-		ipseclog((LOG_DEBUG, "key_mature: ESP not supported in this configuration\n"));
-		return EINVAL;
-#endif
-	}
-
-	/* check compression algorithm */
-	if ((checkmask & 4) != 0) {
-		const struct ipcomp_algorithm *algo;
-
-		/* algorithm-dependent check */
-		algo = ipcomp_algorithm_lookup(sav->alg_enc);
-		if (!algo) {
-			ipseclog((LOG_DEBUG, "key_mature: unknown compression algorithm.\n"));
-			return EINVAL;
-		}
-	}
-
-	key_sa_chgstate(sav, SADB_SASTATE_MATURE);
-
-	return 0;
-}
-
-/*
- * subroutine for SADB_GET and SADB_DUMP.
- */
-static struct mbuf *
-key_setdumpsa(sav, type, satype, seq, pid)
-	struct secasvar *sav;
-	u_int8_t type, satype;
-	u_int32_t seq, pid;
-{
-	struct mbuf *result = NULL, *tres = NULL, *m;
-	int l = 0;
-	int i;
-	void *p;
-	int dumporder[] = {
-		SADB_EXT_SA, SADB_X_EXT_SA2,
-		SADB_EXT_LIFETIME_HARD, SADB_EXT_LIFETIME_SOFT,
-		SADB_EXT_LIFETIME_CURRENT, SADB_EXT_ADDRESS_SRC,
-		SADB_EXT_ADDRESS_DST, SADB_EXT_ADDRESS_PROXY, SADB_EXT_KEY_AUTH,
-		SADB_EXT_KEY_ENCRYPT, SADB_EXT_IDENTITY_SRC,
-		SADB_EXT_IDENTITY_DST, SADB_EXT_SENSITIVITY,
-	};
-
-	m = key_setsadbmsg(type, 0, satype, seq, pid, sav->refcnt);
-	if (m == NULL)
-		goto fail;
-	result = m;
-
-	for (i = sizeof(dumporder)/sizeof(dumporder[0]) - 1; i >= 0; i--) {
-		m = NULL;
-		p = NULL;
-		switch (dumporder[i]) {
-		case SADB_EXT_SA:
-			m = key_setsadbsa(sav);
-			if (!m)
-				goto fail;
-			break;
-
-		case SADB_X_EXT_SA2:
-			m = key_setsadbxsa2(sav->sah->saidx.mode,
-			    sav->replay ? (sav->replay->count & 0xffffffff) : 0,
-			    sav->sah->saidx.reqid);
-			if (!m)
-				goto fail;
-			break;
-
-		case SADB_EXT_ADDRESS_SRC:
-			m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
-			    (struct sockaddr *)&sav->sah->saidx.src,
-			    FULLMASK, IPSEC_ULPROTO_ANY);
-			if (!m)
-				goto fail;
-			break;
-
-		case SADB_EXT_ADDRESS_DST:
-			m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
-			    (struct sockaddr *)&sav->sah->saidx.dst,
-			    FULLMASK, IPSEC_ULPROTO_ANY);
-			if (!m)
-				goto fail;
-			break;
-
-		case SADB_EXT_KEY_AUTH:
-			if (!sav->key_auth)
-				continue;
-			l = PFKEY_UNUNIT64(sav->key_auth->sadb_key_len);
-			p = sav->key_auth;
-			break;
-
-		case SADB_EXT_KEY_ENCRYPT:
-			if (!sav->key_enc)
-				continue;
-			l = PFKEY_UNUNIT64(sav->key_enc->sadb_key_len);
-			p = sav->key_enc;
-			break;
-
-		case SADB_EXT_LIFETIME_CURRENT:
-			if (!sav->lft_c)
-				continue;
-			l = PFKEY_UNUNIT64(((struct sadb_ext *)sav->lft_c)->sadb_ext_len);
-			p = sav->lft_c;
-			break;
-
-		case SADB_EXT_LIFETIME_HARD:
-			if (!sav->lft_h)
-				continue;
-			l = PFKEY_UNUNIT64(((struct sadb_ext *)sav->lft_h)->sadb_ext_len);
-			p = sav->lft_h;
-			break;
-
-		case SADB_EXT_LIFETIME_SOFT:
-			if (!sav->lft_s)
-				continue;
-			l = PFKEY_UNUNIT64(((struct sadb_ext *)sav->lft_s)->sadb_ext_len);
-			p = sav->lft_s;
-			break;
-
-		case SADB_EXT_ADDRESS_PROXY:
-		case SADB_EXT_IDENTITY_SRC:
-		case SADB_EXT_IDENTITY_DST:
-			/* XXX: should we brought from SPD ? */
-		case SADB_EXT_SENSITIVITY:
-		default:
-			continue;
-		}
-
-		if ((!m && !p) || (m && p))
-			goto fail;
-		if (p && tres) {
-			M_PREPEND(tres, l, M_DONTWAIT);
-			if (!tres)
-				goto fail;
-			bcopy(p, mtod(tres, caddr_t), l);
-			continue;
-		}
-		if (p) {
-			m = key_alloc_mbuf(l);
-			if (!m)
-				goto fail;
-			m_copyback(m, 0, l, p);
-		}
-
-		if (tres)
-			m_cat(m, tres);
-		tres = m;
-	}
-
-	m_cat(result, tres);
-
-	if (result->m_len < sizeof(struct sadb_msg)) {
-		result = m_pullup(result, sizeof(struct sadb_msg));
-		if (result == NULL)
-			goto fail;
-	}
-
-	result->m_pkthdr.len = 0;
-	for (m = result; m; m = m->m_next)
-		result->m_pkthdr.len += m->m_len;
-
-	mtod(result, struct sadb_msg *)->sadb_msg_len =
-	    PFKEY_UNIT64(result->m_pkthdr.len);
-
-	return result;
-
-fail:
-	m_freem(result);
-	m_freem(tres);
-	return NULL;
-}
-
-/*
- * set data into sadb_msg.
- */
-static struct mbuf *
-key_setsadbmsg(type, tlen, satype, seq, pid, reserved)
-	u_int8_t type, satype;
-	u_int16_t tlen;
-	u_int32_t seq;
-	pid_t pid;
-	u_int16_t reserved;
-{
-	struct mbuf *m;
-	struct sadb_msg *p;
-	int len;
-
-	len = PFKEY_ALIGN8(sizeof(struct sadb_msg));
-	if (len > MCLBYTES)
-		return NULL;
-	MGETHDR(m, M_DONTWAIT, MT_DATA);
-	if (m && len > MHLEN) {
-		MCLGET(m, M_DONTWAIT);
-		if ((m->m_flags & M_EXT) == 0) {
-			m_freem(m);
-			m = NULL;
-		}
-	}
-	if (!m)
-		return NULL;
-	m->m_pkthdr.len = m->m_len = len;
-	m->m_next = NULL;
-
-	p = mtod(m, struct sadb_msg *);
-
-	bzero(p, len);
-	p->sadb_msg_version = PF_KEY_V2;
-	p->sadb_msg_type = type;
-	p->sadb_msg_errno = 0;
-	p->sadb_msg_satype = satype;
-	p->sadb_msg_len = PFKEY_UNIT64(tlen);
-	p->sadb_msg_reserved = reserved;
-	p->sadb_msg_seq = seq;
-	p->sadb_msg_pid = (u_int32_t)pid;
-
-	return m;
-}
-
-/*
- * copy secasvar data into sadb_address.
- */
-static struct mbuf *
-key_setsadbsa(sav)
-	struct secasvar *sav;
-{
-	struct mbuf *m;
-	struct sadb_sa *p;
-	int len;
-
-	len = PFKEY_ALIGN8(sizeof(struct sadb_sa));
-	m = key_alloc_mbuf(len);
-	if (!m || m->m_next) {	/*XXX*/
-		if (m)
-			m_freem(m);
-		return NULL;
-	}
-
-	p = mtod(m, struct sadb_sa *);
-
-	bzero(p, len);
-	p->sadb_sa_len = PFKEY_UNIT64(len);
-	p->sadb_sa_exttype = SADB_EXT_SA;
-	p->sadb_sa_spi = sav->spi;
-	p->sadb_sa_replay = (sav->replay != NULL ? sav->replay->wsize : 0);
-	p->sadb_sa_state = sav->state;
-	p->sadb_sa_auth = sav->alg_auth;
-	p->sadb_sa_encrypt = sav->alg_enc;
-	p->sadb_sa_flags = sav->flags;
-
-	return m;
-}
-
-/*
- * set data into sadb_address.
- */
-static struct mbuf *
-key_setsadbaddr(exttype, saddr, prefixlen, ul_proto)
-	u_int16_t exttype;
-	struct sockaddr *saddr;
-	u_int8_t prefixlen;
-	u_int16_t ul_proto;
-{
-	struct mbuf *m;
-	struct sadb_address *p;
-	size_t len;
-
-	len = PFKEY_ALIGN8(sizeof(struct sadb_address)) +
-	    PFKEY_ALIGN8(saddr->sa_len);
-	m = key_alloc_mbuf(len);
-	if (!m || m->m_next) {	/*XXX*/
-		if (m)
-			m_freem(m);
-		return NULL;
-	}
-
-	p = mtod(m, struct sadb_address *);
-
-	bzero(p, len);
-	p->sadb_address_len = PFKEY_UNIT64(len);
-	p->sadb_address_exttype = exttype;
-	p->sadb_address_proto = ul_proto;
-	if (prefixlen == FULLMASK) {
-		switch (saddr->sa_family) {
-		case AF_INET:
-			prefixlen = sizeof(struct in_addr) << 3;
-			break;
-		case AF_INET6:
-			prefixlen = sizeof(struct in6_addr) << 3;
-			break;
-		default:
-			; /*XXX*/
-		}
-	}
-	p->sadb_address_prefixlen = prefixlen;
-	p->sadb_address_reserved = 0;
-
-	bcopy(saddr,
-	    mtod(m, caddr_t) + PFKEY_ALIGN8(sizeof(struct sadb_address)),
-	    saddr->sa_len);
-
-	return m;
-}
-
-#if 0
-/*
- * set data into sadb_ident.
- */
-static struct mbuf *
-key_setsadbident(exttype, idtype, string, stringlen, id)
-	u_int16_t exttype, idtype;
-	caddr_t string;
-	int stringlen;
-	u_int64_t id;
-{
-	struct mbuf *m;
-	struct sadb_ident *p;
-	size_t len;
-
-	len = PFKEY_ALIGN8(sizeof(struct sadb_ident)) + PFKEY_ALIGN8(stringlen);
-	m = key_alloc_mbuf(len);
-	if (!m || m->m_next) {	/*XXX*/
-		if (m)
-			m_freem(m);
-		return NULL;
-	}
-
-	p = mtod(m, struct sadb_ident *);
-
-	bzero(p, len);
-	p->sadb_ident_len = PFKEY_UNIT64(len);
-	p->sadb_ident_exttype = exttype;
-	p->sadb_ident_type = idtype;
-	p->sadb_ident_reserved = 0;
-	p->sadb_ident_id = id;
-
-	bcopy(string,
-	    mtod(m, caddr_t) + PFKEY_ALIGN8(sizeof(struct sadb_ident)),
-	    stringlen);
-
-	return m;
-}
-#endif
-
-/*
- * set data into sadb_x_sa2.
- */
-static struct mbuf *
-key_setsadbxsa2(mode, seq, reqid)
-	u_int8_t mode;
-	u_int32_t seq, reqid;
-{
-	struct mbuf *m;
-	struct sadb_x_sa2 *p;
-	size_t len;
-
-	len = PFKEY_ALIGN8(sizeof(struct sadb_x_sa2));
-	m = key_alloc_mbuf(len);
-	if (!m || m->m_next) {	/*XXX*/
-		if (m)
-			m_freem(m);
-		return NULL;
-	}
-
-	p = mtod(m, struct sadb_x_sa2 *);
-
-	bzero(p, len);
-	p->sadb_x_sa2_len = PFKEY_UNIT64(len);
-	p->sadb_x_sa2_exttype = SADB_X_EXT_SA2;
-	p->sadb_x_sa2_mode = mode;
-	p->sadb_x_sa2_reserved1 = 0;
-	p->sadb_x_sa2_reserved2 = 0;
-	p->sadb_x_sa2_sequence = seq;
-	p->sadb_x_sa2_reqid = reqid;
-
-	return m;
-}
-
-/*
- * set data into sadb_lifetime
- */
-static struct mbuf *
-key_setsadblifetime(type, alloc, bytes, addtime, usetime)
-	u_int16_t type;
-	u_int32_t alloc;
-	u_int64_t bytes, addtime, usetime;
-{
-	struct mbuf *m;
-	struct sadb_lifetime *p;
-	size_t len;
-
-	len = PFKEY_ALIGN8(sizeof(struct sadb_lifetime));
-	m = key_alloc_mbuf(len);
-	if (!m || m->m_next) {	/*XXX*/
-		if (m)
-			m_freem(m);
-		return NULL;
-	}
-
-	p = mtod(m, struct sadb_lifetime *);
-
-	bzero(p, len);
-	p->sadb_lifetime_len = PFKEY_UNIT64(len);
-	p->sadb_lifetime_exttype = type;
-	p->sadb_lifetime_allocations = alloc;
-	p->sadb_lifetime_bytes = bytes;
-	p->sadb_lifetime_addtime = addtime;
-	p->sadb_lifetime_usetime = usetime;
-
-	return m;
-}
-
-/*
- * set data into sadb_x_policy
- */
-static struct mbuf *
-key_setsadbxpolicy(type, dir, id)
-	u_int16_t type;
-	u_int8_t dir;
-	u_int32_t id;
-{
-	struct mbuf *m;
-	struct sadb_x_policy *p;
-	size_t len;
-
-	len = PFKEY_ALIGN8(sizeof(struct sadb_x_policy));
-	m = key_alloc_mbuf(len);
-	if (!m || m->m_next) {	/*XXX*/
-		if (m)
-			m_freem(m);
-		return NULL;
-	}
-
-	p = mtod(m, struct sadb_x_policy *);
-
-	bzero(p, len);
-	p->sadb_x_policy_len = PFKEY_UNIT64(len);
-	p->sadb_x_policy_exttype = SADB_X_EXT_POLICY;
-	p->sadb_x_policy_type = type;
-	p->sadb_x_policy_dir = dir;
-	p->sadb_x_policy_id = id;
-
-	return m;
-}
-
-/* %%% utilities */
-/*
- * copy a buffer into the new buffer allocated.
- */
-static void *
-key_newbuf(src, len)
-	const void *src;
-	u_int len;
-{
-	caddr_t new;
-
-	KMALLOC(new, caddr_t, len);
-	if (new == NULL) {
-		ipseclog((LOG_DEBUG, "key_newbuf: No more memory.\n"));
-		return NULL;
-	}
-	bcopy(src, new, len);
-
-	return new;
-}
-
-/* compare my own address
- * OUT:	1: true, i.e. my address.
- *	0: false
- */
-static int
-key_ismyaddr(sa)
-	struct sockaddr *sa;
-{
-#ifdef INET
-	struct sockaddr_in *sin;
-	struct in_ifaddr *ia;
-#endif
-
-	/* sanity check */
-	if (sa == NULL)
-		panic("key_ismyaddr: NULL pointer is passed.");
-
-	switch (sa->sa_family) {
-#ifdef INET
-	case AF_INET:
-		sin = (struct sockaddr_in *)sa;
-		for (ia = in_ifaddrhead.tqh_first; ia;
-		     ia = ia->ia_link.tqe_next)
-		{
-			if (sin->sin_family == ia->ia_addr.sin_family &&
-			    sin->sin_len == ia->ia_addr.sin_len &&
-			    sin->sin_addr.s_addr == ia->ia_addr.sin_addr.s_addr)
-			{
-				return 1;
-			}
-		}
-		break;
-#endif
-#ifdef INET6
-	case AF_INET6:
-		return key_ismyaddr6((struct sockaddr_in6 *)sa);
-#endif
-	}
-
-	return 0;
-}
-
-#ifdef INET6
-/*
- * compare my own address for IPv6.
- * 1: ours
- * 0: other
- * NOTE: derived ip6_input() in KAME. This is necessary to modify more.
- */
-#include <netinet6/in6_var.h>
-
-static int
-key_ismyaddr6(sin6)
-	struct sockaddr_in6 *sin6;
-{
-	struct in6_ifaddr *ia;
-	struct in6_multi *in6m;
-
-	if (sa6_embedscope(sin6, 0) != 0)
-		return 0;
-
-	for (ia = in6_ifaddr; ia; ia = ia->ia_next) {
-		if (key_sockaddrcmp((struct sockaddr *)&sin6,
-		    (struct sockaddr *)&ia->ia_addr, 0) == 0)
-			return 1;
-
-		/*
-		 * XXX Multicast
-		 * XXX why do we care about multlicast here while we don't care
-		 * about IPv4 multicast??
-		 */
-		in6m = NULL;
-		IN6_LOOKUP_MULTI(sin6->sin6_addr, ia->ia_ifp, in6m);
-		if (in6m)
-			return 1;
-	}
-
-	/* loopback, just for safety */
-	if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr))
-		return 1;
-
-	return 0;
-}
-#endif /*INET6*/
-
-/*
- * compare two secasindex structure.
- * flag can specify to compare 2 saidxes.
- * compare two secasindex structure without both mode and reqid.
- * don't compare port.
- * IN:  
- *      saidx0: source, it can be in SAD.
- *      saidx1: object.
- * OUT: 
- *      1 : equal
- *      0 : not equal
- */
-static int
-key_cmpsaidx(saidx0, saidx1, flag)
-	struct secasindex *saidx0, *saidx1;
-	int flag;
-{
-	/* sanity */
-	if (saidx0 == NULL && saidx1 == NULL)
-		return 1;
-
-	if (saidx0 == NULL || saidx1 == NULL)
-		return 0;
-
-	if (saidx0->proto != saidx1->proto)
-		return 0;
-
-	if (flag == CMP_EXACTLY) {
-		if (saidx0->mode != saidx1->mode)
-			return 0;
-		if (saidx0->reqid != saidx1->reqid)
-			return 0;
-		if (bcmp(&saidx0->src, &saidx1->src, saidx0->src.ss_len) != 0 ||
-		    bcmp(&saidx0->dst, &saidx1->dst, saidx0->dst.ss_len) != 0)
-			return 0;
-	} else {
-
-		/* CMP_MODE_REQID, CMP_HEAD */
-		if (flag == CMP_MODE_REQID) {
-			/*
-			 * If reqid of SPD is non-zero, unique SA is required.
-			 * The result must be of same reqid in this case.
-			 */
-			if (saidx1->reqid != 0 && saidx0->reqid != saidx1->reqid)
-				return 0;
-		}
-
-		if (flag == CMP_MODE_REQID) {
-			if (saidx0->mode != IPSEC_MODE_ANY &&
-			    saidx0->mode != saidx1->mode)
-				return 0;
-		}
-
-		if (key_sockaddrcmp((struct sockaddr *)&saidx0->src,
-				(struct sockaddr *)&saidx1->src, 0) != 0) {
-			return 0;
-		}
-		if (key_sockaddrcmp((struct sockaddr *)&saidx0->dst,
-				(struct sockaddr *)&saidx1->dst, 0) != 0) {
-			return 0;
-		}
-	}
-
-	return 1;
-}
-
-/*
- * compare two secindex structure exactly.
- * IN:
- *	spidx0: source, it is often in SPD.
- *	spidx1: object, it is often from PFKEY message.
- * OUT:
- *	1 : equal
- *	0 : not equal
- */
-int
-key_cmpspidx_exactly(spidx0, spidx1)
-	struct secpolicyindex *spidx0, *spidx1;
-{
-	/* sanity */
-	if (spidx0 == NULL && spidx1 == NULL)
-		return 1;
-
-	if (spidx0 == NULL || spidx1 == NULL)
-		return 0;
-
-	if (spidx0->prefs != spidx1->prefs || spidx0->prefd != spidx1->prefd ||
-	    spidx0->ul_proto != spidx1->ul_proto)
-		return 0;
-
-	if (key_sockaddrcmp((struct sockaddr *)&spidx0->src,
-	    (struct sockaddr *)&spidx1->src, 1) != 0) {
-		return 0;
-	}
-	if (key_sockaddrcmp((struct sockaddr *)&spidx0->dst,
-	    (struct sockaddr *)&spidx1->dst, 1) != 0) {
-		return 0;
-	}
-
-	return 1;
-}
-
-/*
- * compare two secindex structure with mask.
- * IN:
- *	spidx0: source, it is often in SPD.
- *	spidx1: object, it is often from IP header.
- * OUT:
- *	1 : equal
- *	0 : not equal
- */
-int
-key_cmpspidx_withmask(spidx0, spidx1)
-	struct secpolicyindex *spidx0, *spidx1;
-{
-	/* sanity */
-	if (spidx0 == NULL && spidx1 == NULL)
-		return 1;
-
-	if (spidx0 == NULL || spidx1 == NULL)
-		return 0;
-
-	if (spidx0->src.ss_family != spidx1->src.ss_family ||
-	    spidx0->dst.ss_family != spidx1->dst.ss_family ||
-	    spidx0->src.ss_len != spidx1->src.ss_len ||
-	    spidx0->dst.ss_len != spidx1->dst.ss_len)
-		return 0;
-
-	/* if spidx.ul_proto == IPSEC_ULPROTO_ANY, ignore. */
-	if (spidx0->ul_proto != (u_int16_t)IPSEC_ULPROTO_ANY &&
-	    spidx0->ul_proto != spidx1->ul_proto)
-		return 0;
-
-	switch (spidx0->src.ss_family) {
-	case AF_INET:
-		if (satosin(&spidx0->src)->sin_port != IPSEC_PORT_ANY &&
-		    satosin(&spidx0->src)->sin_port !=
-		    satosin(&spidx1->src)->sin_port)
-			return 0;
-		if (!key_bbcmp((caddr_t)&satosin(&spidx0->src)->sin_addr,
-		    (caddr_t)&satosin(&spidx1->src)->sin_addr, spidx0->prefs))
-			return 0;
-		break;
-	case AF_INET6:
-		if (satosin6(&spidx0->src)->sin6_port != IPSEC_PORT_ANY &&
-		    satosin6(&spidx0->src)->sin6_port !=
-		    satosin6(&spidx1->src)->sin6_port)
-			return 0;
-		/*
-		 * scope_id check. if sin6_scope_id is 0, we regard it
-		 * as a wildcard scope, which matches any scope zone ID. 
-		 */
-		if (satosin6(&spidx0->src)->sin6_scope_id &&
-		    satosin6(&spidx1->src)->sin6_scope_id &&
-		    satosin6(&spidx0->src)->sin6_scope_id !=
-		    satosin6(&spidx1->src)->sin6_scope_id)
-			return 0;
-		if (!key_bbcmp((caddr_t)&satosin6(&spidx0->src)->sin6_addr,
-		    (caddr_t)&satosin6(&spidx1->src)->sin6_addr, spidx0->prefs))
-			return 0;
-		break;
-	default:
-		/* XXX */
-		if (bcmp(&spidx0->src, &spidx1->src, spidx0->src.ss_len) != 0)
-			return 0;
-		break;
-	}
-
-	switch (spidx0->dst.ss_family) {
-	case AF_INET:
-		if (satosin(&spidx0->dst)->sin_port != IPSEC_PORT_ANY &&
-		    satosin(&spidx0->dst)->sin_port !=
-		    satosin(&spidx1->dst)->sin_port)
-			return 0;
-		if (!key_bbcmp((caddr_t)&satosin(&spidx0->dst)->sin_addr,
-		    (caddr_t)&satosin(&spidx1->dst)->sin_addr, spidx0->prefd))
-			return 0;
-		break;
-	case AF_INET6:
-		if (satosin6(&spidx0->dst)->sin6_port != IPSEC_PORT_ANY &&
-		    satosin6(&spidx0->dst)->sin6_port !=
-		    satosin6(&spidx1->dst)->sin6_port)
-			return 0;
-		/*
-		 * scope_id check. if sin6_scope_id is 0, we regard it
-		 * as a wildcard scope, which matches any scope zone ID. 
-		 */
-		if (satosin6(&spidx0->src)->sin6_scope_id &&
-		    satosin6(&spidx1->src)->sin6_scope_id &&
-		    satosin6(&spidx0->dst)->sin6_scope_id !=
-		    satosin6(&spidx1->dst)->sin6_scope_id)
-			return 0;
-		if (!key_bbcmp((caddr_t)&satosin6(&spidx0->dst)->sin6_addr,
-		    (caddr_t)&satosin6(&spidx1->dst)->sin6_addr, spidx0->prefd))
-			return 0;
-		break;
-	default:
-		/* XXX */
-		if (bcmp(&spidx0->dst, &spidx1->dst, spidx0->dst.ss_len) != 0)
-			return 0;
-		break;
-	}
-
-	/* XXX Do we check other field ?  e.g. flowinfo */
-
-	return 1;
-}
-
-/* returns 0 on match */
-static int
-key_sockaddrcmp(sa1, sa2, port)
-	struct sockaddr *sa1;
-	struct sockaddr *sa2;
-	int port;
-{
-	if (sa1->sa_family != sa2->sa_family || sa1->sa_len != sa2->sa_len)
-		return 1;
-
-	switch (sa1->sa_family) {
-	case AF_INET:
-		if (sa1->sa_len != sizeof(struct sockaddr_in))
-			return 1;
-		if (satosin(sa1)->sin_addr.s_addr !=
-		    satosin(sa2)->sin_addr.s_addr) {
-			return 1;
-		}
-		if (port && satosin(sa1)->sin_port != satosin(sa2)->sin_port)
-			return 1;
-		break;
-	case AF_INET6:
-		if (sa1->sa_len != sizeof(struct sockaddr_in6))
-			return 1;	/*EINVAL*/
-		if (satosin6(sa1)->sin6_scope_id !=
-		    satosin6(sa2)->sin6_scope_id) {
-			return 1;
-		}
-		if (!IN6_ARE_ADDR_EQUAL(&satosin6(sa1)->sin6_addr,
-		    &satosin6(sa2)->sin6_addr)) {
-			return 1;
-		}
-		if (port &&
-		    satosin6(sa1)->sin6_port != satosin6(sa2)->sin6_port) {
-			return 1;
-		}
-		break;
-	default:
-		if (bcmp(sa1, sa2, sa1->sa_len) != 0)
-			return 1;
-		break;
-	}
-
-	return 0;
-}
-
-/*
- * compare two buffers with mask.
- * IN:
- *	addr1: source
- *	addr2: object
- *	bits:  Number of bits to compare
- * OUT:
- *	1 : equal
- *	0 : not equal
- */
-static int
-key_bbcmp(p1, p2, bits)
-	caddr_t p1, p2;
-	u_int bits;
-{
-	u_int8_t mask;
-
-	/* XXX: This could be considerably faster if we compare a word
-	 * at a time, but it is complicated on LSB Endian machines */
-
-	/* Handle null pointers */
-	if (p1 == NULL || p2 == NULL)
-		return (p1 == p2);
-
-	while (bits >= 8) {
-		if (*p1++ != *p2++)
-			return 0;
-		bits -= 8;
-	}
-
-	if (bits > 0) {
-		mask = ~((1<<(8-bits))-1);
-		if ((*p1 & mask) != (*p2 & mask))
-			return 0;
-	}
-	return 1;	/* Match! */
-}
-
-/*
- * time handler.
- * scanning SPD and SAD to check status for each entries,
- * and do to remove or to expire.
- * XXX: year 2038 problem may remain.
- */
-void
-key_timehandler(arg)
-	void *arg;
-{
-	u_int dir;
-	int s;
-	struct timeval tv;
-
-	microtime(&tv);
-
-	s = splnet();	/*called from softclock()*/
-
-	/* SPD */
-    {
-	struct secpolicy *sp, *nextsp;
-
-	for (dir = 0; dir < IPSEC_DIR_MAX; dir++) {
-		for (sp = LIST_FIRST(&sptree[dir]);
-		     sp != NULL;
-		     sp = nextsp) {
-			nextsp = LIST_NEXT(sp, chain);
-
-			if (sp->state == IPSEC_SPSTATE_DEAD) {
-				key_sp_unlink(sp);	/*XXX*/
-				sp = NULL;
-				continue;
-			}
-
-			if (sp->lifetime == 0 && sp->validtime == 0)
-				continue;
-
-			/* the deletion will occur next time */
-			if ((sp->lifetime &&
-			     tv.tv_sec - sp->created > sp->lifetime) ||
-			    (sp->validtime &&
-			     tv.tv_sec - sp->lastused > sp->validtime)) {
-				key_sp_dead(sp);
-				key_spdexpire(sp);
-				continue;
-			}
-		}
-	}
-
-	/* invalidate all cached SPD pointers on pcb */
-	ipsec_invalpcbcacheall();
-    }
-
-	/* SAD */
-    {
-	struct secashead *sah, *nextsah;
-	struct secasvar *sav, *nextsav;
-
-	for (sah = LIST_FIRST(&sahtree);
-	     sah != NULL;
-	     sah = nextsah) {
-
-		nextsah = LIST_NEXT(sah, chain);
-
-		/* if sah has been dead, then delete it and process next sah. */
-		if (sah->state == SADB_SASTATE_DEAD) {
-			key_delsah(sah);
-			continue;
-		}
-
-		/* if LARVAL entry doesn't become MATURE, delete it. */
-		for (sav = LIST_FIRST(&sah->savtree[SADB_SASTATE_LARVAL]);
-		     sav != NULL;
-		     sav = nextsav) {
-
-			nextsav = LIST_NEXT(sav, chain);
-
-			if (tv.tv_sec - sav->created > key_larval_lifetime) {
-				key_freesav(sav);
-			}
-		}
-
-		/*
-		 * check MATURE entry to start to send expire message
-		 * whether or not.
-		 */
-		for (sav = LIST_FIRST(&sah->savtree[SADB_SASTATE_MATURE]);
-		     sav != NULL;
-		     sav = nextsav) {
-
-			nextsav = LIST_NEXT(sav, chain);
-
-			/* we don't need to check. */
-			if (sav->lft_s == NULL)
-				continue;
-
-			/* sanity check */
-			if (sav->lft_c == NULL) {
-				ipseclog((LOG_DEBUG, "key_timehandler: "
-					"There is no CURRENT time, why?\n"));
-				continue;
-			}
-
-			/* check SOFT lifetime */
-			if (sav->lft_s->sadb_lifetime_addtime != 0 &&
-			    tv.tv_sec - sav->created > sav->lft_s->sadb_lifetime_addtime) {
-				/*
-				 * check the SA if it has been used.
-				 * when it hasn't been used, delete it.
-				 * i don't think such SA will be used.
-				 */
-				if (sav->lft_c->sadb_lifetime_usetime == 0) {
-					key_sa_chgstate(sav, SADB_SASTATE_DEAD);
-					key_freesav(sav);
-					sav = NULL;
-				} else {
-					key_sa_chgstate(sav, SADB_SASTATE_DYING);
-					/*
-					 * XXX If we keep to send expire
-					 * message in the status of
-					 * DYING. Do remove below code.
-					 */
-					key_expire(sav);
-				}
-			}
-
-			/* check SOFT lifetime by bytes */
-			/*
-			 * XXX I don't know the way to delete this SA
-			 * when new SA is installed.  Caution when it's
-			 * installed too big lifetime by time.
-			 */
-			else if (sav->lft_s->sadb_lifetime_bytes != 0
-			      && sav->lft_s->sadb_lifetime_bytes < sav->lft_c->sadb_lifetime_bytes) {
-
-				key_sa_chgstate(sav, SADB_SASTATE_DYING);
-				/*
-				 * XXX If we keep to send expire
-				 * message in the status of
-				 * DYING. Do remove below code.
-				 */
-				key_expire(sav);
-			}
-		}
-
-		/* check DYING entry to change status to DEAD. */
-		for (sav = LIST_FIRST(&sah->savtree[SADB_SASTATE_DYING]);
-		     sav != NULL;
-		     sav = nextsav) {
-
-			nextsav = LIST_NEXT(sav, chain);
-
-			/* we don't need to check. */
-			if (sav->lft_h == NULL)
-				continue;
-
-			/* sanity check */
-			if (sav->lft_c == NULL) {
-				ipseclog((LOG_DEBUG, "key_timehandler: "
-					"There is no CURRENT time, why?\n"));
-				continue;
-			}
-
-			if (sav->lft_h->sadb_lifetime_addtime != 0 &&
-			    tv.tv_sec - sav->created > sav->lft_h->sadb_lifetime_addtime) {
-				key_sa_chgstate(sav, SADB_SASTATE_DEAD);
-				key_freesav(sav);
-				sav = NULL;
-			}
-#if 0	/* XXX Should we keep to send expire message until HARD lifetime ? */
-			else if (sav->lft_s != NULL
-			      && sav->lft_s->sadb_lifetime_addtime != 0
-			      && tv.tv_sec - sav->created > sav->lft_s->sadb_lifetime_addtime) {
-				/*
-				 * XXX: should be checked to be
-				 * installed the valid SA.
-				 */
-
-				/*
-				 * If there is no SA then sending
-				 * expire message.
-				 */
-				key_expire(sav);
-			}
-#endif
-			/* check HARD lifetime by bytes */
-			else if (sav->lft_h->sadb_lifetime_bytes != 0
-			      && sav->lft_h->sadb_lifetime_bytes < sav->lft_c->sadb_lifetime_bytes) {
-				key_sa_chgstate(sav, SADB_SASTATE_DEAD);
-				key_freesav(sav);
-				sav = NULL;
-			}
-		}
-
-		/* delete entry in DEAD */
-		for (sav = LIST_FIRST(&sah->savtree[SADB_SASTATE_DEAD]);
-		     sav != NULL;
-		     sav = nextsav) {
-
-			nextsav = LIST_NEXT(sav, chain);
-
-			/* sanity check */
-			if (sav->state != SADB_SASTATE_DEAD) {
-				ipseclog((LOG_DEBUG, "key_timehandler: "
-					"invalid sav->state "
-					"(queue: %u SA: %u): "
-					"kill it anyway\n",
-					SADB_SASTATE_DEAD, sav->state));
-			}
-
-			/*
-			 * do not call key_freesav() here.
-			 * sav should already be freed, and sav->refcnt
-			 * shows other references to sav
-			 * (such as from SPD).
-			 */
-		}
-	}
-    }
-
-#ifndef IPSEC_NONBLOCK_ACQUIRE
-	/* ACQ tree */
-    {
-	struct secacq *acq, *nextacq;
-
-	for (acq = LIST_FIRST(&acqtree);
-	     acq != NULL;
-	     acq = nextacq) {
-
-		nextacq = LIST_NEXT(acq, chain);
-
-		if (tv.tv_sec - acq->created > key_blockacq_lifetime &&
-		    __LIST_CHAINED(acq)) {
-			LIST_REMOVE(acq, chain);
-			KFREE(acq);
-		}
-	}
-    }
-#endif
-
-	/* SP ACQ tree */
-    {
-	struct secspacq *acq, *nextacq;
-
-	for (acq = LIST_FIRST(&spacqtree);
-	     acq != NULL;
-	     acq = nextacq) {
-
-		nextacq = LIST_NEXT(acq, chain);
-
-		if (tv.tv_sec - acq->created > key_blockacq_lifetime &&
-		    __LIST_CHAINED(acq)) {
-			LIST_REMOVE(acq, chain);
-			KFREE(acq);
-		}
-	}
-    }
-
-	/*
-	 * should set timeout based on the most closest timer expiration.
-	 * we don't bother to do that yet.
-	 */
-	callout_reset(&key_timehandler_ch, hz, key_timehandler, (void *)0);
-
-	splx(s);
-	return;
-}
-
-static u_long
-key_random()
-{
-	u_long value;
-
-	key_randomfill(&value, sizeof(value));
-	return value;
-}
-
-void
-key_randomfill(p, l)
-	void *p;
-	size_t l;
-{
-	size_t n;
-	u_long v;
-	static int warn = 1;
-
-	n = 0;
-	n = (size_t)read_random(p, (u_int)l);
-	/* last resort */
-	while (n < l) {
-		v = random();
-		bcopy(&v, (u_int8_t *)p + n,
-		    l - n < sizeof(v) ? l - n : sizeof(v));
-		n += sizeof(v);
-
-		if (warn) {
-			printf("WARNING: pseudo-random number generator "
-			    "used for IPsec processing\n");
-			warn = 0;
-		}
-	}
-}
-
-/*
- * map SADB_SATYPE_* to IPPROTO_*.
- * if satype == SADB_SATYPE then satype is mapped to ~0.
- * OUT:
- *	0: invalid satype.
- */
-static u_int16_t
-key_satype2proto(satype)
-	u_int8_t satype;
-{
-	switch (satype) {
-	case SADB_SATYPE_UNSPEC:
-		return IPSEC_PROTO_ANY;
-	case SADB_SATYPE_AH:
-		return IPPROTO_AH;
-	case SADB_SATYPE_ESP:
-		return IPPROTO_ESP;
-	case SADB_X_SATYPE_IPCOMP:
-		return IPPROTO_IPCOMP;
-	case SADB_X_SATYPE_TCPSIGNATURE:
-		return IPPROTO_TCP;
-	default:
-		return 0;
-	}
-	/* NOTREACHED */
-}
-
-/*
- * map IPPROTO_* to SADB_SATYPE_*
- * OUT:
- *	0: invalid protocol type.
- */
-static u_int8_t
-key_proto2satype(proto)
-	u_int16_t proto;
-{
-	switch (proto) {
-	case IPPROTO_AH:
-		return SADB_SATYPE_AH;
-	case IPPROTO_ESP:
-		return SADB_SATYPE_ESP;
-	case IPPROTO_IPCOMP:
-		return SADB_X_SATYPE_IPCOMP;
-	case IPPROTO_TCP:
-		return SADB_X_SATYPE_TCPSIGNATURE;
-	default:
-		return 0;
-	}
-	/* NOTREACHED */
-}
-
-/* %%% PF_KEY */
-/*
- * SADB_GETSPI processing is to receive
- *	<base, (SA2), src address, dst address, (SPI range)>
- * from the IKMPd, to assign a unique spi value, to hang on the INBOUND
- * tree with the status of LARVAL, and send
- *	<base, SA(*), address(SD)>
- * to the IKMPd.
- *
- * IN:	mhp: pointer to the pointer to each header.
- * OUT:	NULL if fail.
- *	other if success, return pointer to the message to send.
- */
-static int
-key_getspi(so, m, mhp)
-	struct socket *so;
-	struct mbuf *m;
-	const struct sadb_msghdr *mhp;
-{
-	struct sadb_address *src0, *dst0;
-	struct secasindex saidx;
-	struct secashead *newsah;
-	struct secasvar *newsav;
-	u_int8_t proto;
-	u_int32_t spi;
-	u_int8_t mode;
-	u_int32_t reqid;
-	int error;
-
-	/* sanity check */
-	if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
-		panic("key_getspi: NULL pointer is passed.");
-
-	if (mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
-	    mhp->ext[SADB_EXT_ADDRESS_DST] == NULL) {
-		ipseclog((LOG_DEBUG, "key_getspi: invalid message is passed.\n"));
-		return key_senderror(so, m, EINVAL);
-	}
-	if (mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
-	    mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address)) {
-		ipseclog((LOG_DEBUG, "key_getspi: invalid message is passed.\n"));
-		return key_senderror(so, m, EINVAL);
-	}
-	if (mhp->ext[SADB_X_EXT_SA2] != NULL) {
-		mode = ((struct sadb_x_sa2 *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_mode;
-		reqid = ((struct sadb_x_sa2 *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_reqid;
-	} else {
-		mode = IPSEC_MODE_ANY;
-		reqid = 0;
-	}
-
-	src0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_SRC]);
-	dst0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_DST]);
-
-	/* map satype to proto */
-	if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
-		ipseclog((LOG_DEBUG, "key_getspi: invalid satype is passed.\n"));
-		return key_senderror(so, m, EINVAL);
-	}
-
-	/* make sure if port number is zero. */
-	switch (((struct sockaddr *)(src0 + 1))->sa_family) {
-	case AF_INET:
-		if (((struct sockaddr *)(src0 + 1))->sa_len !=
-		    sizeof(struct sockaddr_in))
-			return key_senderror(so, m, EINVAL);
-		((struct sockaddr_in *)(src0 + 1))->sin_port = 0;
-		break;
-	case AF_INET6:
-		if (((struct sockaddr *)(src0 + 1))->sa_len !=
-		    sizeof(struct sockaddr_in6))
-			return key_senderror(so, m, EINVAL);
-		((struct sockaddr_in6 *)(src0 + 1))->sin6_port = 0;
-		break;
-	default:
-		; /*???*/
-	}
-	switch (((struct sockaddr *)(dst0 + 1))->sa_family) {
-	case AF_INET:
-		if (((struct sockaddr *)(dst0 + 1))->sa_len !=
-		    sizeof(struct sockaddr_in))
-			return key_senderror(so, m, EINVAL);
-		((struct sockaddr_in *)(dst0 + 1))->sin_port = 0;
-		break;
-	case AF_INET6:
-		if (((struct sockaddr *)(dst0 + 1))->sa_len !=
-		    sizeof(struct sockaddr_in6))
-			return key_senderror(so, m, EINVAL);
-		((struct sockaddr_in6 *)(dst0 + 1))->sin6_port = 0;
-		break;
-	default:
-		; /*???*/
-	}
-
-	/* XXX boundary check against sa_len */
-	KEY_SETSECASIDX(proto, mode, reqid, src0 + 1, dst0 + 1, &saidx);
-
-	/* SPI allocation */
-	spi = key_do_getnewspi((struct sadb_spirange *)mhp->ext[SADB_EXT_SPIRANGE],
-	                       &saidx);
-	if (spi == 0)
-		return key_senderror(so, m, EINVAL);
-
-	/* get a SA index */
-	if ((newsah = key_getsah(&saidx)) == NULL) {
-		/* create a new SA index */
-		if ((newsah = key_newsah(&saidx)) == NULL) {
-			ipseclog((LOG_DEBUG, "key_getspi: No more memory.\n"));
-			return key_senderror(so, m, ENOBUFS);
-		}
-	}
-
-	/* get a new SA */
-	/* XXX rewrite */
-	newsav = key_newsav(m, mhp, newsah, &error);
-	if (newsav == NULL) {
-		/* XXX don't free new SA index allocated in above. */
-		return key_senderror(so, m, error);
-	}
-
-	/* set spi */
-	key_setspi(newsav, htonl(spi));
-
-#ifndef IPSEC_NONBLOCK_ACQUIRE
-	/* delete the entry in acqtree */
-	if (mhp->msg->sadb_msg_seq != 0) {
-		struct secacq *acq;
-		if ((acq = key_getacqbyseq(mhp->msg->sadb_msg_seq)) != NULL) {
-			/* reset counter in order to deletion by timehandler. */
-			acq->created = time_second;
-			acq->count = 0;
-		}
-    	}
-#endif
-
-    {
-	struct mbuf *n, *nn;
-	struct sadb_sa *m_sa;
-	struct sadb_msg *newmsg;
-	int off, len;
-
-	/* create new sadb_msg to reply. */
-	len = PFKEY_ALIGN8(sizeof(struct sadb_msg)) +
-	    PFKEY_ALIGN8(sizeof(struct sadb_sa));
-	if (len > MCLBYTES)
-		return key_senderror(so, m, ENOBUFS);
-
-	MGETHDR(n, M_DONTWAIT, MT_DATA);
-	if (len > MHLEN) {
-		MCLGET(n, M_DONTWAIT);
-		if ((n->m_flags & M_EXT) == 0) {
-			m_freem(n);
-			n = NULL;
-		}
-	}
-	if (!n)
-		return key_senderror(so, m, ENOBUFS);
-
-	n->m_len = len;
-	n->m_next = NULL;
-	off = 0;
-
-	m_copydata(m, 0, sizeof(struct sadb_msg), mtod(n, caddr_t) + off);
-	off += PFKEY_ALIGN8(sizeof(struct sadb_msg));
-
-	m_sa = (struct sadb_sa *)(mtod(n, caddr_t) + off);
-	m_sa->sadb_sa_len = PFKEY_UNIT64(sizeof(struct sadb_sa));
-	m_sa->sadb_sa_exttype = SADB_EXT_SA;
-	m_sa->sadb_sa_spi = htonl(spi);
-	off += PFKEY_ALIGN8(sizeof(struct sadb_sa));
-
-#ifdef DIAGNOSTIC
-	if (off != len)
-		panic("length inconsistency in key_getspi");
-#endif
-
-	n->m_next = key_gather_mbuf(m, mhp, 0, 2, SADB_EXT_ADDRESS_SRC,
-	    SADB_EXT_ADDRESS_DST);
-	if (!n->m_next) {
-		m_freem(n);
-		return key_senderror(so, m, ENOBUFS);
-	}
-
-	if (n->m_len < sizeof(struct sadb_msg)) {
-		n = m_pullup(n, sizeof(struct sadb_msg));
-		if (n == NULL)
-			return key_sendup_mbuf(so, m, KEY_SENDUP_ONE);
-	}
-
-	n->m_pkthdr.len = 0;
-	for (nn = n; nn; nn = nn->m_next)
-		n->m_pkthdr.len += nn->m_len;
-
-	newmsg = mtod(n, struct sadb_msg *);
-	newmsg->sadb_msg_seq = newsav->seq;
-	newmsg->sadb_msg_errno = 0;
-	newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len);
-
-	m_freem(m);
-	return key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
-    }
-}
-
-/*
- * allocating new SPI
- * called by key_getspi().
- * OUT:
- *	0:	failure.
- *	others: success.
- */
-static u_int32_t
-key_do_getnewspi(spirange, saidx)
-	struct sadb_spirange *spirange;
-	struct secasindex *saidx;
-{
-	u_int32_t newspi;
-	u_int32_t min, max;
-	int count = key_spi_trycnt;
-
-	/* set spi range to allocate */
-	if (spirange != NULL) {
-		min = spirange->sadb_spirange_min;
-		max = spirange->sadb_spirange_max;
-	} else {
-		min = key_spi_minval;
-		max = key_spi_maxval;
-	}
-	/* IPCOMP needs 2-byte SPI */
-	if (saidx->proto == IPPROTO_IPCOMP) {
-		u_int32_t t;
-		if (min >= 0x10000)
-			min = 0xffff;
-		if (max >= 0x10000)
-			max = 0xffff;
-		if (min > max) {
-			t = min; min = max; max = t;
-		}
-	}
-
-	if (min == max) {
-		if (key_checkspidup(saidx, min) != NULL) {
-			ipseclog((LOG_DEBUG, "key_do_getnewspi: SPI %u exists already.\n", min));
-			return 0;
-		}
-
-		count--; /* taking one cost. */
-		newspi = min;
-
-	} else {
-
-		/* init SPI */
-		newspi = 0;
-
-		/* when requesting to allocate spi ranged */
-		while (count--) {
-			/* generate pseudo-random SPI value ranged. */
-			newspi = min + (key_random() % (max - min + 1));
-
-			if (key_checkspidup(saidx, newspi) == NULL)
-				break;
-		}
-
-		if (count == 0 || newspi == 0) {
-			ipseclog((LOG_DEBUG, "key_do_getnewspi: to allocate spi is failed.\n"));
-			return 0;
-		}
-	}
-
-	/* statistics */
-	keystat.getspi_count =
-		(keystat.getspi_count + key_spi_trycnt - count) / 2;
-
-	return newspi;
-}
-
-/*
- * SADB_UPDATE processing
- * receive
- *   <base, SA, (SA2), (lifetime(HSC),) address(SD), (address(P),)
- *       key(AE), (identity(SD),) (sensitivity)>
- * from the ikmpd, and update a secasvar entry whose status is SADB_SASTATE_LARVAL.
- * and send
- *   <base, SA, (SA2), (lifetime(HSC),) address(SD), (address(P),)
- *       (identity(SD),) (sensitivity)>
- * to the ikmpd.
- *
- * m will always be freed.
- */
-static int
-key_update(so, m, mhp)
-	struct socket *so;
-	struct mbuf *m;
-	const struct sadb_msghdr *mhp;
-{
-	struct sadb_sa *sa0;
-	struct sadb_address *src0, *dst0;
-	struct secasindex saidx;
-	struct secashead *sah;
-	struct secasvar *sav;
-	u_int16_t proto;
-	u_int8_t mode;
-	u_int32_t reqid;
-	int error;
-
-	/* sanity check */
-	if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
-		panic("key_update: NULL pointer is passed.");
-
-	/* map satype to proto */
-	if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
-		ipseclog((LOG_DEBUG, "key_update: invalid satype is passed.\n"));
-		return key_senderror(so, m, EINVAL);
-	}
-
-	if (mhp->ext[SADB_EXT_SA] == NULL ||
-	    mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
-	    mhp->ext[SADB_EXT_ADDRESS_DST] == NULL ||
-	    (mhp->msg->sadb_msg_satype == SADB_SATYPE_ESP &&
-	     mhp->ext[SADB_EXT_KEY_ENCRYPT] == NULL) ||
-	    (mhp->msg->sadb_msg_satype == SADB_SATYPE_AH &&
-	     mhp->ext[SADB_EXT_KEY_AUTH] == NULL) ||
-	    (mhp->ext[SADB_EXT_LIFETIME_HARD] != NULL &&
-	     mhp->ext[SADB_EXT_LIFETIME_SOFT] == NULL) ||
-	    (mhp->ext[SADB_EXT_LIFETIME_HARD] == NULL &&
-	     mhp->ext[SADB_EXT_LIFETIME_SOFT] != NULL)) {
-		ipseclog((LOG_DEBUG, "key_update: invalid message is passed.\n"));
-		return key_senderror(so, m, EINVAL);
-	}
-	if (mhp->extlen[SADB_EXT_SA] < sizeof(struct sadb_sa) ||
-	    mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
-	    mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address)) {
-		ipseclog((LOG_DEBUG, "key_update: invalid message is passed.\n"));
-		return key_senderror(so, m, EINVAL);
-	}
-	if (mhp->ext[SADB_X_EXT_SA2] != NULL) {
-		mode = ((struct sadb_x_sa2 *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_mode;
-		reqid = ((struct sadb_x_sa2 *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_reqid;
-	} else {
-		mode = IPSEC_MODE_ANY;
-		reqid = 0;
-	}
-	/* XXX boundary checking for other extensions */
-
-	sa0 = (struct sadb_sa *)mhp->ext[SADB_EXT_SA];
-	src0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_SRC]);
-	dst0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_DST]);
-
-	/* XXX boundary check against sa_len */
-	KEY_SETSECASIDX(proto, mode, reqid, src0 + 1, dst0 + 1, &saidx);
-
-	/* get a SA header */
-	if ((sah = key_getsah(&saidx)) == NULL) {
-		ipseclog((LOG_DEBUG, "key_update: no SA index found.\n"));
-		return key_senderror(so, m, ENOENT);
-	}
-
-	/* set spidx if there */
-	/* XXX rewrite */
-	error = key_setident(sah, m, mhp);
-	if (error)
-		return key_senderror(so, m, error);
-
-	/* find a SA with sequence number. */
-#ifdef IPSEC_DOSEQCHECK
-	if (mhp->msg->sadb_msg_seq != 0 &&
-	    (sav = key_getsavbyseq(sah, mhp->msg->sadb_msg_seq)) == NULL) {
-		ipseclog((LOG_DEBUG,
-		    "key_update: no larval SA with sequence %u exists.\n",
-		    mhp->msg->sadb_msg_seq));
-		return key_senderror(so, m, ENOENT);
-	}
-#else
-	if ((sav = key_getsavbyspi(sah, sa0->sadb_sa_spi)) == NULL) {
-		ipseclog((LOG_DEBUG,
-		    "key_update: no such a SA found (spi:%u)\n",
-		    (u_int32_t)ntohl(sa0->sadb_sa_spi)));
-		return key_senderror(so, m, EINVAL);
-	}
-#endif
-
-	/* validity check */
-	if (sav->sah->saidx.proto != proto) {
-		ipseclog((LOG_DEBUG,
-		    "key_update: protocol mismatched (DB=%u param=%u)\n",
-		    sav->sah->saidx.proto, proto));
-		return key_senderror(so, m, EINVAL);
-	}
-#ifdef IPSEC_DOSEQCHECK
-	if (sav->spi != sa0->sadb_sa_spi) {
-		ipseclog((LOG_DEBUG,
-		    "key_update: SPI mismatched (DB:%u param:%u)\n",
-		    (u_int32_t)ntohl(sav->spi),
-		    (u_int32_t)ntohl(sa0->sadb_sa_spi)));
-		return key_senderror(so, m, EINVAL);
-	}
-#endif
-	if (sav->pid != mhp->msg->sadb_msg_pid) {
-		ipseclog((LOG_DEBUG,
-		    "key_update: pid mismatched (DB:%u param:%u)\n",
-		    sav->pid, mhp->msg->sadb_msg_pid));
-		return key_senderror(so, m, EINVAL);
-	}
-
-	/* copy sav values */
-	error = key_setsaval(sav, m, mhp);
-	if (error) {
-		key_freesav(sav);
-		return key_senderror(so, m, error);
-	}
-
-	/* check SA values to be mature. */
-	if ((error = key_mature(sav)) != 0) {
-		key_freesav(sav);
-		return key_senderror(so, m, error);
-	}
-
-    {
-	struct mbuf *n;
-
-	/* set msg buf from mhp */
-	n = key_getmsgbuf_x1(m, mhp);
-	if (n == NULL) {
-		ipseclog((LOG_DEBUG, "key_update: No more memory.\n"));
-		return key_senderror(so, m, ENOBUFS);
-	}
-
-	m_freem(m);
-	return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
-    }
-}
-
-/*
- * search SAD with sequence for a SA which state is SADB_SASTATE_LARVAL.
- * only called by key_update().
- * OUT:
- *	NULL	: not found
- *	others	: found, pointer to a SA.
- */
-#ifdef IPSEC_DOSEQCHECK
-static struct secasvar *
-key_getsavbyseq(sah, seq)
-	struct secashead *sah;
-	u_int32_t seq;
-{
-	struct secasvar *sav;
-	u_int state;
-
-	state = SADB_SASTATE_LARVAL;
-
-	/* search SAD with sequence number ? */
-	LIST_FOREACH(sav, &sah->savtree[state], chain) {
-
-		KEY_CHKSASTATE(state, sav->state, "key_getsabyseq");
-
-		if (sav->seq == seq) {
-			sav->refcnt++;
-			KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
-				printf("DP key_getsavbyseq cause "
-					"refcnt++:%d SA:%p\n",
-					sav->refcnt, sav));
-			return sav;
-		}
-	}
-
-	return NULL;
-}
-#endif
-
-/*
- * SADB_ADD processing
- * add an entry to SA database, when received
- *   <base, SA, (SA2), (lifetime(HSC),) address(SD), (address(P),)
- *       key(AE), (identity(SD),) (sensitivity)>
- * from the ikmpd,
- * and send
- *   <base, SA, (SA2), (lifetime(HSC),) address(SD), (address(P),)
- *       (identity(SD),) (sensitivity)>
- * to the ikmpd.
- *
- * IGNORE identity and sensitivity messages.
- *
- * m will always be freed.
- */
-static int
-key_add(so, m, mhp)
-	struct socket *so;
-	struct mbuf *m;
-	const struct sadb_msghdr *mhp;
-{
-	struct sadb_sa *sa0;
-	struct sadb_address *src0, *dst0;
-	struct secasindex saidx;
-	struct secashead *newsah;
-	struct secasvar *newsav;
-	u_int16_t proto;
-	u_int8_t mode;
-	u_int32_t reqid;
-	int error;
-
-	/* sanity check */
-	if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
-		panic("key_add: NULL pointer is passed.");
-
-	/* map satype to proto */
-	if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
-		ipseclog((LOG_DEBUG, "key_add: invalid satype is passed.\n"));
-		return key_senderror(so, m, EINVAL);
-	}
-
-	if (mhp->ext[SADB_EXT_SA] == NULL ||
-	    mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
-	    mhp->ext[SADB_EXT_ADDRESS_DST] == NULL ||
-	    (mhp->msg->sadb_msg_satype == SADB_SATYPE_ESP &&
-	     mhp->ext[SADB_EXT_KEY_ENCRYPT] == NULL) ||
-	    (mhp->msg->sadb_msg_satype == SADB_SATYPE_AH &&
-	     mhp->ext[SADB_EXT_KEY_AUTH] == NULL) ||
-	    (mhp->ext[SADB_EXT_LIFETIME_HARD] != NULL &&
-	     mhp->ext[SADB_EXT_LIFETIME_SOFT] == NULL) ||
-	    (mhp->ext[SADB_EXT_LIFETIME_HARD] == NULL &&
-	     mhp->ext[SADB_EXT_LIFETIME_SOFT] != NULL)) {
-		ipseclog((LOG_DEBUG, "key_add: invalid message is passed.\n"));
-		return key_senderror(so, m, EINVAL);
-	}
-	if (mhp->extlen[SADB_EXT_SA] < sizeof(struct sadb_sa) ||
-	    mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
-	    mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address)) {
-		/* XXX need more */
-		ipseclog((LOG_DEBUG, "key_add: invalid message is passed.\n"));
-		return key_senderror(so, m, EINVAL);
-	}
-	if (mhp->ext[SADB_X_EXT_SA2] != NULL) {
-		mode = ((struct sadb_x_sa2 *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_mode;
-		reqid = ((struct sadb_x_sa2 *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_reqid;
-	} else {
-		mode = IPSEC_MODE_ANY;
-		reqid = 0;
-	}
-
-	sa0 = (struct sadb_sa *)mhp->ext[SADB_EXT_SA];
-	src0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_SRC];
-	dst0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_DST];
-
-	/* XXX boundary check against sa_len */
-	KEY_SETSECASIDX(proto, mode, reqid, src0 + 1, dst0 + 1, &saidx);
-
-	/* get a SA header */
-	if ((newsah = key_getsah(&saidx)) == NULL) {
-		/* create a new SA header */
-		if ((newsah = key_newsah(&saidx)) == NULL) {
-			ipseclog((LOG_DEBUG, "key_add: No more memory.\n"));
-			return key_senderror(so, m, ENOBUFS);
-		}
-	}
-
-	/* set spidx if there */
-	/* XXX rewrite */
-	error = key_setident(newsah, m, mhp);
-	if (error) {
-		return key_senderror(so, m, error);
-	}
-
-	/* create new SA entry. */
-	/* We can create new SA only if SPI is differenct. */
-	if (key_getsavbyspi(newsah, sa0->sadb_sa_spi)) {
-		ipseclog((LOG_DEBUG, "key_add: SA already exists.\n"));
-		return key_senderror(so, m, EEXIST);
-	}
-	newsav = key_newsav(m, mhp, newsah, &error);
-	if (newsav == NULL) {
-		return key_senderror(so, m, error);
-	}
-
-	/* check SA values to be mature. */
-	if ((error = key_mature(newsav)) != 0) {
-		key_freesav(newsav);
-		return key_senderror(so, m, error);
-	}
-
-	/*
-	 * don't call key_freesav() here, as we would like to keep the SA
-	 * in the database on success.
-	 */
-
-    {
-	struct mbuf *n;
-
-	/* set msg buf from mhp */
-	n = key_getmsgbuf_x1(m, mhp);
-	if (n == NULL) {
-		ipseclog((LOG_DEBUG, "key_update: No more memory.\n"));
-		return key_senderror(so, m, ENOBUFS);
-	}
-
-	m_freem(m);
-	return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
-    }
-}
-
-/* m is retained */
-static int
-key_setident(sah, m, mhp)
-	struct secashead *sah;
-	struct mbuf *m;
-	const struct sadb_msghdr *mhp;
-{
-	const struct sadb_ident *idsrc, *iddst;
-	int idsrclen, iddstlen;
-
-	/* sanity check */
-	if (sah == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
-		panic("key_setident: NULL pointer is passed.");
-
-	/* don't make buffer if not there */
-	if (mhp->ext[SADB_EXT_IDENTITY_SRC] == NULL &&
-	    mhp->ext[SADB_EXT_IDENTITY_DST] == NULL) {
-		sah->idents = NULL;
-		sah->identd = NULL;
-		return 0;
-	}
-	
-	if (mhp->ext[SADB_EXT_IDENTITY_SRC] == NULL ||
-	    mhp->ext[SADB_EXT_IDENTITY_DST] == NULL) {
-		ipseclog((LOG_DEBUG, "key_setident: invalid identity.\n"));
-		return EINVAL;
-	}
-
-	idsrc = (const struct sadb_ident *)mhp->ext[SADB_EXT_IDENTITY_SRC];
-	iddst = (const struct sadb_ident *)mhp->ext[SADB_EXT_IDENTITY_DST];
-	idsrclen = mhp->extlen[SADB_EXT_IDENTITY_SRC];
-	iddstlen = mhp->extlen[SADB_EXT_IDENTITY_DST];
-
-	/* validity check */
-	if (idsrc->sadb_ident_type != iddst->sadb_ident_type) {
-		ipseclog((LOG_DEBUG, "key_setident: ident type mismatch.\n"));
-		return EINVAL;
-	}
-
-	switch (idsrc->sadb_ident_type) {
-	case SADB_IDENTTYPE_PREFIX:
-	case SADB_IDENTTYPE_FQDN:
-	case SADB_IDENTTYPE_USERFQDN:
-	default:
-		/* XXX do nothing */
-		sah->idents = NULL;
-		sah->identd = NULL;
-	 	return 0;
-	}
-
-	/* make structure */
-	KMALLOC(sah->idents, struct sadb_ident *, idsrclen);
-	if (sah->idents == NULL) {
-		ipseclog((LOG_DEBUG, "key_setident: No more memory.\n"));
-		return ENOBUFS;
-	}
-	KMALLOC(sah->identd, struct sadb_ident *, iddstlen);
-	if (sah->identd == NULL) {
-		KFREE(sah->idents);
-		sah->idents = NULL;
-		ipseclog((LOG_DEBUG, "key_setident: No more memory.\n"));
-		return ENOBUFS;
-	}
-	bcopy(idsrc, sah->idents, idsrclen);
-	bcopy(iddst, sah->identd, iddstlen);
-
-	return 0;
-}
-
-/*
- * m will not be freed on return.
- * it is caller's responsibility to free the result. 
- */
-static struct mbuf *
-key_getmsgbuf_x1(m, mhp)
-	struct mbuf *m;
-	const struct sadb_msghdr *mhp;
-{
-	struct mbuf *n;
-
-	/* sanity check */
-	if (m == NULL || mhp == NULL || mhp->msg == NULL)
-		panic("key_getmsgbuf_x1: NULL pointer is passed.");
-
-	/* create new sadb_msg to reply. */
-	n = key_gather_mbuf(m, mhp, 1, 9, SADB_EXT_RESERVED,
-	    SADB_EXT_SA, SADB_X_EXT_SA2,
-	    SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST,
-	    SADB_EXT_LIFETIME_HARD, SADB_EXT_LIFETIME_SOFT,
-	    SADB_EXT_IDENTITY_SRC, SADB_EXT_IDENTITY_DST);
-	if (!n)
-		return NULL;
-
-	if (n->m_len < sizeof(struct sadb_msg)) {
-		n = m_pullup(n, sizeof(struct sadb_msg));
-		if (n == NULL)
-			return NULL;
-	}
-	mtod(n, struct sadb_msg *)->sadb_msg_errno = 0;
-	mtod(n, struct sadb_msg *)->sadb_msg_len =
-	    PFKEY_UNIT64(n->m_pkthdr.len);
-
-	return n;
-}
-
-static int key_delete_all(struct socket *, struct mbuf *,
-	const struct sadb_msghdr *, u_int16_t);
-
-/*
- * SADB_DELETE processing
- * receive
- *   <base, SA(*), address(SD)>
- * from the ikmpd, and set SADB_SASTATE_DEAD,
- * and send,
- *   <base, SA(*), address(SD)>
- * to the ikmpd.
- *
- * m will always be freed.
- */
-static int
-key_delete(so, m, mhp)
-	struct socket *so;
-	struct mbuf *m;
-	const struct sadb_msghdr *mhp;
-{
-	struct sadb_sa *sa0;
-	struct sadb_address *src0, *dst0;
-	struct secasindex saidx;
-	struct secashead *sah;
-	struct secasvar *sav = NULL;
-	u_int16_t proto;
-
-	/* sanity check */
-	if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
-		panic("key_delete: NULL pointer is passed.");
-
-	/* map satype to proto */
-	if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
-		ipseclog((LOG_DEBUG, "key_delete: invalid satype is passed.\n"));
-		return key_senderror(so, m, EINVAL);
-	}
-
-	if (mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
-	    mhp->ext[SADB_EXT_ADDRESS_DST] == NULL) {
-		ipseclog((LOG_DEBUG, "key_delete: invalid message is passed.\n"));
-		return key_senderror(so, m, EINVAL);
-	}
-
-	if (mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
-	    mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address)) {
-		ipseclog((LOG_DEBUG, "key_delete: invalid message is passed.\n"));
-		return key_senderror(so, m, EINVAL);
-	}
-
-	if (mhp->ext[SADB_EXT_SA] == NULL) {
-		/*
-		 * Caller wants us to delete all non-LARVAL SAs
-		 * that match the src/dst.  This is used during
-		 * IKE INITIAL-CONTACT.
-		 */
-		ipseclog((LOG_DEBUG, "key_delete: doing delete all.\n"));
-		return key_delete_all(so, m, mhp, proto);
-	} else if (mhp->extlen[SADB_EXT_SA] < sizeof(struct sadb_sa)) {
-		ipseclog((LOG_DEBUG, "key_delete: invalid message is passed.\n"));
-		return key_senderror(so, m, EINVAL);
-	}
-
-	sa0 = (struct sadb_sa *)mhp->ext[SADB_EXT_SA];
-	src0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_SRC]);
-	dst0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_DST]);
-
-	/* XXX boundary check against sa_len */
-	KEY_SETSECASIDX(proto, IPSEC_MODE_ANY, 0, src0 + 1, dst0 + 1, &saidx);
-
-	/* get a SA header */
-	LIST_FOREACH(sah, &sahtree, chain) {
-		if (sah->state == SADB_SASTATE_DEAD)
-			continue;
-		if (key_cmpsaidx(&sah->saidx, &saidx, CMP_HEAD) == 0)
-			continue;
-
-		/* get a SA with SPI. */
-		sav = key_getsavbyspi(sah, sa0->sadb_sa_spi);
-		if (sav)
-			break;
-	}
-	if (sah == NULL) {
-		ipseclog((LOG_DEBUG, "key_delete: no SA found.\n"));
-		return key_senderror(so, m, ENOENT);
-	}
-
-	key_sa_chgstate(sav, SADB_SASTATE_DEAD);
-	key_freesav(sav);
-	sav = NULL;
-
-    {
-	struct mbuf *n;
-	struct sadb_msg *newmsg;
-
-	/* create new sadb_msg to reply. */
-	n = key_gather_mbuf(m, mhp, 1, 4, SADB_EXT_RESERVED,
-	    SADB_EXT_SA, SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST);
-	if (!n)
-		return key_senderror(so, m, ENOBUFS);
-
-	if (n->m_len < sizeof(struct sadb_msg)) {
-		n = m_pullup(n, sizeof(struct sadb_msg));
-		if (n == NULL)
-			return key_senderror(so, m, ENOBUFS);
-	}
-	newmsg = mtod(n, struct sadb_msg *);
-	newmsg->sadb_msg_errno = 0;
-	newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len);
-
-	m_freem(m);
-	return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
-    }
-}
-
-/*
- * delete all SAs for src/dst.  Called from key_delete().
- */
-static int
-key_delete_all(so, m, mhp, proto)
-	struct socket *so;
-	struct mbuf *m;
-	const struct sadb_msghdr *mhp;
-	u_int16_t proto;
-{
-	struct sadb_address *src0, *dst0;
-	struct secasindex saidx;
-	struct secashead *sah;
-	struct secasvar *sav, *nextsav;
-	u_int stateidx, state;
-
-	src0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_SRC]);
-	dst0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_DST]);
-
-	/* XXX boundary check against sa_len */
-	KEY_SETSECASIDX(proto, IPSEC_MODE_ANY, 0, src0 + 1, dst0 + 1, &saidx);
-
-	LIST_FOREACH(sah, &sahtree, chain) {
-		if (sah->state == SADB_SASTATE_DEAD)
-			continue;
-		if (key_cmpsaidx(&sah->saidx, &saidx, CMP_HEAD) == 0)
-			continue;
-
-		/* Delete all non-LARVAL SAs. */
-		for (stateidx = 0;
-		     stateidx < _ARRAYLEN(saorder_state_alive);
-		     stateidx++) {
-			state = saorder_state_alive[stateidx];
-			if (state == SADB_SASTATE_LARVAL)
-				continue;
-			for (sav = LIST_FIRST(&sah->savtree[state]);
-			     sav != NULL; sav = nextsav) {
-				nextsav = LIST_NEXT(sav, chain);
-				/* sanity check */
-				if (sav->state != state) {
-					ipseclog((LOG_DEBUG, "key_delete_all: "
-					       "invalid sav->state "
-					       "(queue: %u SA: %u)\n",
-					       state, sav->state));
-					continue;
-				}
-				
-				key_sa_chgstate(sav, SADB_SASTATE_DEAD);
-				key_freesav(sav);
-			}
-		}
-	}
-    {
-	struct mbuf *n;
-	struct sadb_msg *newmsg;
-
-	/* create new sadb_msg to reply. */
-	n = key_gather_mbuf(m, mhp, 1, 3, SADB_EXT_RESERVED,
-	    SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST);
-	if (!n)
-		return key_senderror(so, m, ENOBUFS);
-
-	if (n->m_len < sizeof(struct sadb_msg)) {
-		n = m_pullup(n, sizeof(struct sadb_msg));
-		if (n == NULL)
-			return key_senderror(so, m, ENOBUFS);
-	}
-	newmsg = mtod(n, struct sadb_msg *);
-	newmsg->sadb_msg_errno = 0;
-	newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len);
-
-	m_freem(m);
-	return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
-    }
-}
-
-/*
- * SADB_GET processing
- * receive
- *   <base, SA(*), address(SD)>
- * from the ikmpd, and get a SP and a SA to respond,
- * and send,
- *   <base, SA, (lifetime(HSC),) address(SD), (address(P),) key(AE),
- *       (identity(SD),) (sensitivity)>
- * to the ikmpd.
- *
- * m will always be freed.
- */
-static int
-key_get(so, m, mhp)
-	struct socket *so;
-	struct mbuf *m;
-	const struct sadb_msghdr *mhp;
-{
-	struct sadb_sa *sa0;
-	struct sadb_address *src0, *dst0;
-	struct secasindex saidx;
-	struct secashead *sah;
-	struct secasvar *sav = NULL;
-	u_int16_t proto;
-
-	/* sanity check */
-	if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
-		panic("key_get: NULL pointer is passed.");
-
-	/* map satype to proto */
-	if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
-		ipseclog((LOG_DEBUG, "key_get: invalid satype is passed.\n"));
-		return key_senderror(so, m, EINVAL);
-	}
-
-	if (mhp->ext[SADB_EXT_SA] == NULL ||
-	    mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
-	    mhp->ext[SADB_EXT_ADDRESS_DST] == NULL) {
-		ipseclog((LOG_DEBUG, "key_get: invalid message is passed.\n"));
-		return key_senderror(so, m, EINVAL);
-	}
-	if (mhp->extlen[SADB_EXT_SA] < sizeof(struct sadb_sa) ||
-	    mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
-	    mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address)) {
-		ipseclog((LOG_DEBUG, "key_get: invalid message is passed.\n"));
-		return key_senderror(so, m, EINVAL);
-	}
-
-	sa0 = (struct sadb_sa *)mhp->ext[SADB_EXT_SA];
-	src0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_SRC];
-	dst0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_DST];
-
-	/* XXX boundary check against sa_len */
-	KEY_SETSECASIDX(proto, IPSEC_MODE_ANY, 0, src0 + 1, dst0 + 1, &saidx);
-
-	/* get a SA header */
-	LIST_FOREACH(sah, &sahtree, chain) {
-		if (sah->state == SADB_SASTATE_DEAD)
-			continue;
-		if (key_cmpsaidx(&sah->saidx, &saidx, CMP_HEAD) == 0)
-			continue;
-
-		/* get a SA with SPI. */
-		sav = key_getsavbyspi(sah, sa0->sadb_sa_spi);
-		if (sav)
-			break;
-	}
-	if (sah == NULL) {
-		ipseclog((LOG_DEBUG, "key_get: no SA found.\n"));
-		return key_senderror(so, m, ENOENT);
-	}
-
-    {
-	struct mbuf *n;
-	u_int8_t satype;
-
-	/* map proto to satype */
-	if ((satype = key_proto2satype(sah->saidx.proto)) == 0) {
-		ipseclog((LOG_DEBUG, "key_get: there was invalid proto in SAD.\n"));
-		return key_senderror(so, m, EINVAL);
-	}
-
-	/* create new sadb_msg to reply. */
-	n = key_setdumpsa(sav, SADB_GET, satype, mhp->msg->sadb_msg_seq,
-	    mhp->msg->sadb_msg_pid);
-	if (!n)
-		return key_senderror(so, m, ENOBUFS);
-
-	m_freem(m);
-	return key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
-    }
-}
-
-/* XXX make it sysctl-configurable? */
-static void
-key_getcomb_setlifetime(comb)
-	struct sadb_comb *comb;
-{
-
-	comb->sadb_comb_soft_allocations = 1;
-	comb->sadb_comb_hard_allocations = 1;
-	comb->sadb_comb_soft_bytes = 0;
-	comb->sadb_comb_hard_bytes = 0;
-	comb->sadb_comb_hard_addtime = 86400;	/* 1 day */
-	comb->sadb_comb_soft_addtime = comb->sadb_comb_hard_addtime * 80 / 100;
-	comb->sadb_comb_hard_usetime = 28800;	/* 8 hours */
-	comb->sadb_comb_soft_usetime = comb->sadb_comb_hard_usetime * 80 / 100;
-}
-
-#ifdef IPSEC_ESP
-/*
- * XXX reorder combinations by preference
- * XXX no idea if the user wants ESP authentication or not
- */
-static struct mbuf *
-key_getcomb_esp()
-{
-	struct sadb_comb *comb;
-	const struct esp_algorithm *algo;
-	struct mbuf *result = NULL, *m, *n;
-	int encmin;
-	int i, off, o;
-	int totlen;
-	const int l = PFKEY_ALIGN8(sizeof(struct sadb_comb));
-
-	m = NULL;
-	for (i = 1; i <= SADB_EALG_MAX; i++) {
-		algo = esp_algorithm_lookup(i);
-		if (!algo)
-			continue;
-
-		if (algo->keymax < ipsec_esp_keymin)
-			continue;
-		if (algo->keymin < ipsec_esp_keymin)
-			encmin = ipsec_esp_keymin;
-		else
-			encmin = algo->keymin;
-
-		if (ipsec_esp_auth)
-			m = key_getcomb_ah();
-		else {
-#ifdef DIAGNOSTIC
-			if (l > MLEN)
-				panic("assumption failed in key_getcomb_esp");
-#endif
-			MGET(m, M_DONTWAIT, MT_DATA);
-			if (m) {
-				M_ALIGN(m, l);
-				m->m_len = l;
-				m->m_next = NULL;
-				bzero(mtod(m, caddr_t), m->m_len);
-			}
-		}
-		if (!m)
-			goto fail;
-
-		totlen = 0;
-		for (n = m; n; n = n->m_next)
-			totlen += n->m_len;
-#ifdef DIAGNOSTIC
-		if (totlen % l)
-			panic("assumption failed in key_getcomb_esp");
-#endif
-
-		for (off = 0; off < totlen; off += l) {
-			n = m_pulldown(m, off, l, &o);
-			if (!n) {
-				/* m is already freed */
-				goto fail;
-			}
-			comb = (struct sadb_comb *)(mtod(n, caddr_t) + o);
-			bzero(comb, sizeof(*comb));
-			key_getcomb_setlifetime(comb);
-			comb->sadb_comb_encrypt = i;
-			comb->sadb_comb_encrypt_minbits = encmin;
-			comb->sadb_comb_encrypt_maxbits = algo->keymax;
-		}
-
-		if (!result)
-			result = m;
-		else
-			m_cat(result, m);
-	}
-
-	return result;
-
- fail:
-	if (result)
-		m_freem(result);
-	return NULL;
-}
-#endif
-
-/*
- * XXX reorder combinations by preference
- */
-static struct mbuf *
-key_getcomb_ah()
-{
-	struct sadb_comb *comb;
-	const struct ah_algorithm *algo;
-	struct mbuf *m;
-	int min;
-	int i;
-	const int l = PFKEY_ALIGN8(sizeof(struct sadb_comb));
-
-	m = NULL;
-	for (i = 1; i <= SADB_AALG_MAX; i++) {
-#if 1
-		/* we prefer HMAC algorithms, not old algorithms */
-		if (i != SADB_AALG_SHA1HMAC && i != SADB_AALG_MD5HMAC)
-			continue;
-#endif
-		algo = ah_algorithm_lookup(i);
-		if (!algo)
-			continue;
-
-		if (algo->keymax < ipsec_ah_keymin)
-			continue;
-		if (algo->keymin < ipsec_ah_keymin)
-			min = ipsec_ah_keymin;
-		else
-			min = algo->keymin;
-
-		if (!m) {
-#ifdef DIAGNOSTIC
-			if (l > MLEN)
-				panic("assumption failed in key_getcomb_ah");
-#endif
-			MGET(m, M_DONTWAIT, MT_DATA);
-			if (m) {
-				M_ALIGN(m, l);
-				m->m_len = l;
-				m->m_next = NULL;
-			}
-		} else
-			M_PREPEND(m, l, M_DONTWAIT);
-		if (!m)
-			return NULL;
-
-		comb = mtod(m, struct sadb_comb *);
-		bzero(comb, sizeof(*comb));
-		key_getcomb_setlifetime(comb);
-		comb->sadb_comb_auth = i;
-		comb->sadb_comb_auth_minbits = min;
-		comb->sadb_comb_auth_maxbits = algo->keymax;
-	}
-
-	return m;
-}
-
-/*
- * not really an official behavior.  discussed in pf_key@inner.net in Sep2000.
- * XXX reorder combinations by preference
- */
-static struct mbuf *
-key_getcomb_ipcomp()
-{
-	struct sadb_comb *comb;
-	const struct ipcomp_algorithm *algo;
-	struct mbuf *m;
-	int i;
-	const int l = PFKEY_ALIGN8(sizeof(struct sadb_comb));
-
-	m = NULL;
-	for (i = 1; i <= SADB_X_CALG_MAX; i++) {
-		algo = ipcomp_algorithm_lookup(i);
-		if (!algo)
-			continue;
-
-		if (!m) {
-#ifdef DIAGNOSTIC
-			if (l > MLEN)
-				panic("assumption failed in key_getcomb_ipcomp");
-#endif
-			MGET(m, M_DONTWAIT, MT_DATA);
-			if (m) {
-				M_ALIGN(m, l);
-				m->m_len = l;
-				m->m_next = NULL;
-			}
-		} else
-			M_PREPEND(m, l, M_DONTWAIT);
-		if (!m)
-			return NULL;
-
-		comb = mtod(m, struct sadb_comb *);
-		bzero(comb, sizeof(*comb));
-		key_getcomb_setlifetime(comb);
-		comb->sadb_comb_encrypt = i;
-		/* what should we set into sadb_comb_*_{min,max}bits? */
-	}
-
-	return m;
-}
-
-/*
- * XXX no way to pass mode (transport/tunnel) to userland
- * XXX replay checking?
- * XXX sysctl interface to ipsec_{ah,esp}_keymin
- */
-static struct mbuf *
-key_getprop(saidx)
-	const struct secasindex *saidx;
-{
-	struct sadb_prop *prop;
-	struct mbuf *m, *n;
-	const int l = PFKEY_ALIGN8(sizeof(struct sadb_prop));
-	int totlen;
-
-	switch (saidx->proto)  {
-#ifdef IPSEC_ESP
-	case IPPROTO_ESP:
-		m = key_getcomb_esp();
-		break;
-#endif
-	case IPPROTO_AH:
-		m = key_getcomb_ah();
-		break;
-	case IPPROTO_IPCOMP:
-		m = key_getcomb_ipcomp();
-		break;
-	default:
-		return NULL;
-	}
-
-	if (!m)
-		return NULL;
-	M_PREPEND(m, l, M_DONTWAIT);
-	if (!m)
-		return NULL;
-
-	totlen = 0;
-	for (n = m; n; n = n->m_next)
-		totlen += n->m_len;
-
-	prop = mtod(m, struct sadb_prop *);
-	bzero(prop, sizeof(*prop));
-	prop->sadb_prop_len = PFKEY_UNIT64(totlen);
-	prop->sadb_prop_exttype = SADB_EXT_PROPOSAL;
-	prop->sadb_prop_replay = 32;	/* XXX */
-
-	return m;
-}
-
-/*
- * SADB_ACQUIRE processing called by key_checkrequest() and key_acquire2().
- * send
- *   <base, SA, address(SD), (address(P)), x_policy,
- *       (identity(SD),) (sensitivity,) proposal>
- * to KMD, and expect to receive
- *   <base> with SADB_ACQUIRE if error occured,
- * or
- *   <base, src address, dst address, (SPI range)> with SADB_GETSPI
- * from KMD by PF_KEY.
- *
- * XXX x_policy is outside of RFC2367 (KAME extension).
- * XXX sensitivity is not supported.
- * XXX for ipcomp, RFC2367 does not define how to fill in proposal.
- * see comment for key_getcomb_ipcomp().
- *
- * OUT:
- *    0     : succeed
- *    others: error number
- */
-static int
-key_acquire(saidx, sp)
-	struct secasindex *saidx;
-	struct secpolicy *sp;
-{
-	struct mbuf *result = NULL, *m;
-#ifndef IPSEC_NONBLOCK_ACQUIRE
-	struct secacq *newacq;
-#endif
-	u_int8_t satype;
-	int error = -1;
-	u_int32_t seq;
-
-	/* sanity check */
-	if (saidx == NULL)
-		panic("key_acquire: NULL pointer is passed.");
-	if ((satype = key_proto2satype(saidx->proto)) == 0)
-		panic("key_acquire: invalid proto is passed.");
-
-#ifndef IPSEC_NONBLOCK_ACQUIRE
-	/*
-	 * We never do anything about acquirng SA.  There is anather
-	 * solution that kernel blocks to send SADB_ACQUIRE message until
-	 * getting something message from IKEd.  In later case, to be
-	 * managed with ACQUIRING list.
-	 */
-	/* get an entry to check whether sending message or not. */
-	if ((newacq = key_getacq(saidx)) != NULL) {
-		if (key_blockacq_count < newacq->count) {
-			/* reset counter and do send message. */
-			newacq->count = 0;
-		} else {
-			/* increment counter and do nothing. */
-			newacq->count++;
-			return 0;
-		}
-	} else {
-		/* make new entry for blocking to send SADB_ACQUIRE. */
-		if ((newacq = key_newacq(saidx)) == NULL)
-			return ENOBUFS;
-
-		/* add to acqtree */
-		LIST_INSERT_HEAD(&acqtree, newacq, chain);
-	}
-#endif
-
-
-#ifndef IPSEC_NONBLOCK_ACQUIRE
-	seq = newacq->seq;
-#else
-	seq = (acq_seq = (acq_seq == ~0 ? 1 : ++acq_seq));
-#endif
-	m = key_setsadbmsg(SADB_ACQUIRE, 0, satype, seq, 0, 0);
-	if (!m) {
-		error = ENOBUFS;
-		goto fail;
-	}
-	result = m;
-
-	/* set sadb_address for saidx's. */
-	m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
-	    (struct sockaddr *)&saidx->src, FULLMASK, IPSEC_ULPROTO_ANY);
-	if (!m) {
-		error = ENOBUFS;
-		goto fail;
-	}
-	m_cat(result, m);
-
-	m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
-	    (struct sockaddr *)&saidx->dst, FULLMASK, IPSEC_ULPROTO_ANY);
-	if (!m) {
-		error = ENOBUFS;
-		goto fail;
-	}
-	m_cat(result, m);
-
-	/* XXX proxy address (optional) */
-
-	/* set sadb_x_policy */
-	if (sp) {
-		m = key_setsadbxpolicy(sp->policy, sp->dir, sp->id);
-		if (!m) {
-			error = ENOBUFS;
-			goto fail;
-		}
-		m_cat(result, m);
-	}
-
-	/* XXX identity (optional) */
-#if 0
-	if (idexttype && fqdn) {
-		/* create identity extension (FQDN) */
-		struct sadb_ident *id;
-		int fqdnlen;
-
-		fqdnlen = strlen(fqdn) + 1;	/* +1 for terminating-NUL */
-		id = (struct sadb_ident *)p;
-		bzero(id, sizeof(*id) + PFKEY_ALIGN8(fqdnlen));
-		id->sadb_ident_len = PFKEY_UNIT64(sizeof(*id) + PFKEY_ALIGN8(fqdnlen));
-		id->sadb_ident_exttype = idexttype;
-		id->sadb_ident_type = SADB_IDENTTYPE_FQDN;
-		bcopy(fqdn, id + 1, fqdnlen);
-		p += sizeof(struct sadb_ident) + PFKEY_ALIGN8(fqdnlen);
-	}
-
-	if (idexttype) {
-		/* create identity extension (USERFQDN) */
-		struct sadb_ident *id;
-		int userfqdnlen;
-
-		if (userfqdn) {
-			/* +1 for terminating-NUL */
-			userfqdnlen = strlen(userfqdn) + 1;
-		} else
-			userfqdnlen = 0;
-		id = (struct sadb_ident *)p;
-		bzero(id, sizeof(*id) + PFKEY_ALIGN8(userfqdnlen));
-		id->sadb_ident_len = PFKEY_UNIT64(sizeof(*id) + PFKEY_ALIGN8(userfqdnlen));
-		id->sadb_ident_exttype = idexttype;
-		id->sadb_ident_type = SADB_IDENTTYPE_USERFQDN;
-		/* XXX is it correct? */
-		if (curproc && curproc->p_cred)
-			id->sadb_ident_id = curproc->p_cred->p_ruid;
-		if (userfqdn && userfqdnlen)
-			bcopy(userfqdn, id + 1, userfqdnlen);
-		p += sizeof(struct sadb_ident) + PFKEY_ALIGN8(userfqdnlen);
-	}
-#endif
-
-	/* XXX sensitivity (optional) */
-
-	/* create proposal/combination extension */
-	m = key_getprop(saidx);
-#if 0
-	/*
-	 * spec conformant: always attach proposal/combination extension,
-	 * the problem is that we have no way to attach it for ipcomp,
-	 * due to the way sadb_comb is declared in RFC2367.
-	 */
-	if (!m) {
-		error = ENOBUFS;
-		goto fail;
-	}
-	m_cat(result, m);
-#else
-	/*
-	 * outside of spec; make proposal/combination extension optional.
-	 */
-	if (m)
-		m_cat(result, m);
-#endif
-
-	if ((result->m_flags & M_PKTHDR) == 0) {
-		error = EINVAL;
-		goto fail;
-	}
-
-	if (result->m_len < sizeof(struct sadb_msg)) {
-		result = m_pullup(result, sizeof(struct sadb_msg));
-		if (result == NULL) {
-			error = ENOBUFS;
-			goto fail;
-		}
-	}
-
-	result->m_pkthdr.len = 0;
-	for (m = result; m; m = m->m_next)
-		result->m_pkthdr.len += m->m_len;
-
-	mtod(result, struct sadb_msg *)->sadb_msg_len =
-	    PFKEY_UNIT64(result->m_pkthdr.len);
-
-	return key_sendup_mbuf(NULL, result, KEY_SENDUP_REGISTERED);
-
- fail:
-	if (result)
-		m_freem(result);
-	return error;
-}
-
-#ifndef IPSEC_NONBLOCK_ACQUIRE
-static struct secacq *
-key_newacq(saidx)
-	struct secasindex *saidx;
-{
-	struct secacq *newacq;
-
-	/* get new entry */
-	KMALLOC(newacq, struct secacq *, sizeof(struct secacq));
-	if (newacq == NULL) {
-		ipseclog((LOG_DEBUG, "key_newacq: No more memory.\n"));
-		return NULL;
-	}
-	bzero(newacq, sizeof(*newacq));
-
-	/* copy secindex */
-	bcopy(saidx, &newacq->saidx, sizeof(newacq->saidx));
-	newacq->seq = (acq_seq == ~0 ? 1 : ++acq_seq);
-	newacq->created = time_second;
-	newacq->count = 0;
-
-	return newacq;
-}
-
-static struct secacq *
-key_getacq(saidx)
-	struct secasindex *saidx;
-{
-	struct secacq *acq;
-
-	LIST_FOREACH(acq, &acqtree, chain) {
-		if (key_cmpsaidx(saidx, &acq->saidx, CMP_EXACTLY))
-			return acq;
-	}
-
-	return NULL;
-}
-
-static struct secacq *
-key_getacqbyseq(seq)
-	u_int32_t seq;
-{
-	struct secacq *acq;
-
-	LIST_FOREACH(acq, &acqtree, chain) {
-		if (acq->seq == seq)
-			return acq;
-	}
-
-	return NULL;
-}
-#endif
-
-static struct secspacq *
-key_newspacq(spidx)
-	struct secpolicyindex *spidx;
-{
-	struct secspacq *acq;
-
-	if (!spidx)
-		return NULL;
-
-	/* get new entry */
-	KMALLOC(acq, struct secspacq *, sizeof(struct secspacq));
-	if (acq == NULL) {
-		ipseclog((LOG_DEBUG, "key_newspacq: No more memory.\n"));
-		return NULL;
-	}
-	bzero(acq, sizeof(*acq));
-
-	/* copy secindex */
-	bcopy(spidx, &acq->spidx, sizeof(acq->spidx));
-	acq->created = time_second;
-	acq->count = 1;
-
-	return acq;
-}
-
-static struct secspacq *
-key_getspacq(spidx)
-	struct secpolicyindex *spidx;
-{
-	struct secspacq *acq;
-
-	if (!spidx)
-		return NULL;
-
-	LIST_FOREACH(acq, &spacqtree, chain) {
-		if (key_cmpspidx_exactly(spidx, &acq->spidx))
-			return acq;
-	}
-
-	return NULL;
-}
-
-/*
- * SADB_ACQUIRE processing,
- * in first situation, is receiving
- *   <base>
- * from the ikmpd, and clear sequence of its secasvar entry.
- *
- * In second situation, is receiving
- *   <base, address(SD), (address(P),) (identity(SD),) (sensitivity,) proposal>
- * from a user land process, and return
- *   <base, address(SD), (address(P),) (identity(SD),) (sensitivity,) proposal>
- * to the socket.
- *
- * m will always be freed.
- */
-static int
-key_acquire2(so, m, mhp)
-	struct socket *so;
-	struct mbuf *m;
-	const struct sadb_msghdr *mhp;
-{
-	struct sadb_address *src0, *dst0;
-	struct secasindex saidx;
-	struct secashead *sah;
-	u_int16_t proto;
-	int error;
-
-	/* sanity check */
-	if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
-		panic("key_acquire2: NULL pointer is passed.");
-
-	/*
-	 * Error message from KMd.
-	 * We assume that if error was occured in IKEd, the length of PFKEY
-	 * message is equal to the size of sadb_msg structure.
-	 * We do not raise error even if error occured in this function.
-	 */
-	if (mhp->msg->sadb_msg_len == PFKEY_UNIT64(sizeof(struct sadb_msg))) {
-#ifndef IPSEC_NONBLOCK_ACQUIRE
-		struct secacq *acq;
-
-		/* check sequence number */
-		if (mhp->msg->sadb_msg_seq == 0) {
-			ipseclog((LOG_DEBUG, "key_acquire2: must specify sequence number.\n"));
-			m_freem(m);
-			return 0;
-		}
-
-		if ((acq = key_getacqbyseq(mhp->msg->sadb_msg_seq)) == NULL) {
-			/*
-			 * the specified larval SA is already gone, or we got
-			 * a bogus sequence number.  we can silently ignore it.
-			 */
-			m_freem(m);
-			return 0;
-		}
-
-		/* reset acq counter in order to deletion by timehander. */
-		acq->created = time_second;
-		acq->count = 0;
-#endif
-		m_freem(m);
-		return 0;
-	}
-
-	/*
-	 * This message is from user land.
-	 */
-
-	/* map satype to proto */
-	if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
-		ipseclog((LOG_DEBUG, "key_acquire2: invalid satype is passed.\n"));
-		return key_senderror(so, m, EINVAL);
-	}
-
-	if (mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
-	    mhp->ext[SADB_EXT_ADDRESS_DST] == NULL ||
-	    mhp->ext[SADB_EXT_PROPOSAL] == NULL) {
-		/* error */
-		ipseclog((LOG_DEBUG, "key_acquire2: invalid message is passed.\n"));
-		return key_senderror(so, m, EINVAL);
-	}
-	if (mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
-	    mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address) ||
-	    mhp->extlen[SADB_EXT_PROPOSAL] < sizeof(struct sadb_prop)) {
-		/* error */
-		ipseclog((LOG_DEBUG, "key_acquire2: invalid message is passed.\n"));
-		return key_senderror(so, m, EINVAL);
-	}
-
-	src0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_SRC];
-	dst0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_DST];
-
-	/* XXX boundary check against sa_len */
-	KEY_SETSECASIDX(proto, IPSEC_MODE_ANY, 0, src0 + 1, dst0 + 1, &saidx);
-
-	/* get a SA index */
-	LIST_FOREACH(sah, &sahtree, chain) {
-		if (sah->state == SADB_SASTATE_DEAD)
-			continue;
-		if (key_cmpsaidx(&sah->saidx, &saidx, CMP_MODE_REQID))
-			break;
-	}
-	if (sah != NULL) {
-		ipseclog((LOG_DEBUG, "key_acquire2: a SA exists already.\n"));
-		return key_senderror(so, m, EEXIST);
-	}
-
-	error = key_acquire(&saidx, NULL);
-	if (error != 0) {
-		ipseclog((LOG_DEBUG, "key_acquire2: error %d returned "
-			"from key_acquire.\n", mhp->msg->sadb_msg_errno));
-		return key_senderror(so, m, error);
-	}
-
-	return key_sendup_mbuf(so, m, KEY_SENDUP_REGISTERED);
-}
-
-/*
- * SADB_REGISTER processing.
- * If SATYPE_UNSPEC has been passed as satype, only return sabd_supported.
- * receive
- *   <base>
- * from the ikmpd, and register a socket to send PF_KEY messages,
- * and send
- *   <base, supported>
- * to KMD by PF_KEY.
- * If socket is detached, must free from regnode.
- *
- * m will always be freed.
- */
-static int
-key_register(so, m, mhp)
-	struct socket *so;
-	struct mbuf *m;
-	const struct sadb_msghdr *mhp;
-{
-	struct secreg *reg, *newreg = 0;
-
-	/* sanity check */
-	if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
-		panic("key_register: NULL pointer is passed.");
-
-	/* check for invalid register message */
-	if (mhp->msg->sadb_msg_satype >= sizeof(regtree)/sizeof(regtree[0]))
-		return key_senderror(so, m, EINVAL);
-
-	/* When SATYPE_UNSPEC is specified, only return sabd_supported. */
-	if (mhp->msg->sadb_msg_satype == SADB_SATYPE_UNSPEC)
-		goto setmsg;
-
-	/* check whether existing or not */
-	LIST_FOREACH(reg, &regtree[mhp->msg->sadb_msg_satype], chain) {
-		if (reg->so == so) {
-			ipseclog((LOG_DEBUG, "key_register: socket exists already.\n"));
-			return key_senderror(so, m, EEXIST);
-		}
-	}
-
-	/* create regnode */
-	KMALLOC(newreg, struct secreg *, sizeof(*newreg));
-	if (newreg == NULL) {
-		ipseclog((LOG_DEBUG, "key_register: No more memory.\n"));
-		return key_senderror(so, m, ENOBUFS);
-	}
-	bzero((caddr_t)newreg, sizeof(*newreg));
-
-	newreg->so = so;
-	((struct keycb *)sotorawcb(so))->kp_registered++;
-
-	/* add regnode to regtree. */
-	LIST_INSERT_HEAD(&regtree[mhp->msg->sadb_msg_satype], newreg, chain);
-
-  setmsg:
-    {
-	struct mbuf *n;
-	struct sadb_msg *newmsg;
-	struct sadb_supported *sup;
-	u_int len, alen, elen;
-	int off;
-	int i;
-	struct sadb_alg *alg;
-
-	/* create new sadb_msg to reply. */
-	alen = 0;
-	for (i = 1; i <= SADB_AALG_MAX; i++) {
-		if (ah_algorithm_lookup(i))
-			alen += sizeof(struct sadb_alg);
-	}
-	if (alen)
-		alen += sizeof(struct sadb_supported);
-	elen = 0;
-#ifdef IPSEC_ESP
-	for (i = 1; i <= SADB_EALG_MAX; i++) {
-		if (esp_algorithm_lookup(i))
-			elen += sizeof(struct sadb_alg);
-	}
-	if (elen)
-		elen += sizeof(struct sadb_supported);
-#endif
-
-	len = sizeof(struct sadb_msg) + alen + elen;
-
-	if (len > MCLBYTES)
-		return key_senderror(so, m, ENOBUFS);
-
-	MGETHDR(n, M_DONTWAIT, MT_DATA);
-	if (len > MHLEN) {
-		MCLGET(n, M_DONTWAIT);
-		if ((n->m_flags & M_EXT) == 0) {
-			m_freem(n);
-			n = NULL;
-		}
-	}
-	if (!n)
-		return key_senderror(so, m, ENOBUFS);
-
-	n->m_pkthdr.len = n->m_len = len;
-	n->m_next = NULL;
-	off = 0;
-
-	m_copydata(m, 0, sizeof(struct sadb_msg), mtod(n, caddr_t) + off);
-	newmsg = mtod(n, struct sadb_msg *);
-	newmsg->sadb_msg_errno = 0;
-	newmsg->sadb_msg_len = PFKEY_UNIT64(len);
-	off += PFKEY_ALIGN8(sizeof(struct sadb_msg));
-
-	/* for authentication algorithm */
-	if (alen) {
-		sup = (struct sadb_supported *)(mtod(n, caddr_t) + off);
-		sup->sadb_supported_len = PFKEY_UNIT64(alen);
-		sup->sadb_supported_exttype = SADB_EXT_SUPPORTED_AUTH;
-		off += PFKEY_ALIGN8(sizeof(*sup));
-
-		for (i = 1; i <= SADB_AALG_MAX; i++) {
-			const struct ah_algorithm *aalgo;
-
-			aalgo = ah_algorithm_lookup(i);
-			if (!aalgo)
-				continue;
-			alg = (struct sadb_alg *)(mtod(n, caddr_t) + off);
-			alg->sadb_alg_id = i;
-			alg->sadb_alg_ivlen = 0;
-			alg->sadb_alg_minbits = aalgo->keymin;
-			alg->sadb_alg_maxbits = aalgo->keymax;
-			off += PFKEY_ALIGN8(sizeof(*alg));
-		}
-	}
-
-#ifdef IPSEC_ESP
-	/* for encryption algorithm */
-	if (elen) {
-		sup = (struct sadb_supported *)(mtod(n, caddr_t) + off);
-		sup->sadb_supported_len = PFKEY_UNIT64(elen);
-		sup->sadb_supported_exttype = SADB_EXT_SUPPORTED_ENCRYPT;
-		off += PFKEY_ALIGN8(sizeof(*sup));
-
-		for (i = 1; i <= SADB_EALG_MAX; i++) {
-			const struct esp_algorithm *ealgo;
-
-			ealgo = esp_algorithm_lookup(i);
-			if (!ealgo)
-				continue;
-			alg = (struct sadb_alg *)(mtod(n, caddr_t) + off);
-			alg->sadb_alg_id = i;
-			if (ealgo && ealgo->ivlen) {
-				/*
-				 * give NULL to get the value preferred by
-				 * algorithm XXX SADB_X_EXT_DERIV ?
-				 */
-				alg->sadb_alg_ivlen =
-				    (*ealgo->ivlen)(ealgo, NULL);
-			} else
-				alg->sadb_alg_ivlen = 0;
-			alg->sadb_alg_minbits = ealgo->keymin;
-			alg->sadb_alg_maxbits = ealgo->keymax;
-			off += PFKEY_ALIGN8(sizeof(struct sadb_alg));
-		}
-	}
-#endif
-
-#ifdef DIGAGNOSTIC
-	if (off != len)
-		panic("length assumption failed in key_register");
-#endif
-
-	m_freem(m);
-	return key_sendup_mbuf(so, n, KEY_SENDUP_REGISTERED);
-    }
-}
-
-/*
- * free secreg entry registered.
- * XXX: I want to do free a socket marked done SADB_RESIGER to socket.
- */
-void
-key_freereg(so)
-	struct socket *so;
-{
-	struct secreg *reg;
-	int i;
-
-	/* sanity check */
-	if (so == NULL)
-		panic("key_freereg: NULL pointer is passed.");
-
-	/*
-	 * check whether existing or not.
-	 * check all type of SA, because there is a potential that
-	 * one socket is registered to multiple type of SA.
-	 */
-	for (i = 0; i <= SADB_SATYPE_MAX; i++) {
-		LIST_FOREACH(reg, &regtree[i], chain) {
-			if (reg->so == so && __LIST_CHAINED(reg)) {
-				LIST_REMOVE(reg, chain);
-				KFREE(reg);
-				break;
-			}
-		}
-	}
-	
-	return;
-}
-
-/*
- * SADB_EXPIRE processing
- * send
- *   <base, SA, SA2, lifetime(C and one of HS), address(SD)>
- * to KMD by PF_KEY.
- * NOTE: We send only soft lifetime extension.
- *
- * OUT:	0	: succeed
- *	others	: error number
- */
-static int
-key_expire(sav)
-	struct secasvar *sav;
-{
-	int s;
-	int satype;
-	struct mbuf *result = NULL, *m;
-	int len;
-	int error = -1;
-	struct sadb_lifetime *lt;
-
-	/* XXX: Why do we lock ? */
-	s = splnet();	/*called from softclock()*/
-
-	/* sanity check */
-	if (sav == NULL)
-		panic("key_expire: NULL pointer is passed.");
-	if (sav->sah == NULL)
-		panic("key_expire: Why was SA index in SA NULL.");
-	if ((satype = key_proto2satype(sav->sah->saidx.proto)) == 0)
-		panic("key_expire: invalid proto is passed.");
-
-	/* set msg header */
-	m = key_setsadbmsg(SADB_EXPIRE, 0, satype, sav->seq, 0, sav->refcnt);
-	if (!m) {
-		error = ENOBUFS;
-		goto fail;
-	}
-	result = m;
-
-	/* create SA extension */
-	m = key_setsadbsa(sav);
-	if (!m) {
-		error = ENOBUFS;
-		goto fail;
-	}
-	m_cat(result, m);
-
-	/* create SA extension */
-	m = key_setsadbxsa2(sav->sah->saidx.mode,
-	    sav->replay ? (sav->replay->count & 0xffffffff) : 0,
-	    sav->sah->saidx.reqid);
-	if (!m) {
-		error = ENOBUFS;
-		goto fail;
-	}
-	m_cat(result, m);
-
-	/* create lifetime extension (current and soft) */
-	len = PFKEY_ALIGN8(sizeof(*lt)) * 2;
-	m = key_alloc_mbuf(len);
-	if (!m || m->m_next) {	/*XXX*/
-		if (m)
-			m_freem(m);
-		error = ENOBUFS;
-		goto fail;
-	}
-	bzero(mtod(m, caddr_t), len);
-	lt = mtod(m, struct sadb_lifetime *);
-	lt->sadb_lifetime_len = PFKEY_UNIT64(sizeof(struct sadb_lifetime));
-	lt->sadb_lifetime_exttype = SADB_EXT_LIFETIME_CURRENT;
-	lt->sadb_lifetime_allocations = sav->lft_c->sadb_lifetime_allocations;
-	lt->sadb_lifetime_bytes = sav->lft_c->sadb_lifetime_bytes;
-	lt->sadb_lifetime_addtime = sav->lft_c->sadb_lifetime_addtime;
-	lt->sadb_lifetime_usetime = sav->lft_c->sadb_lifetime_usetime;
-	lt = (struct sadb_lifetime *)(mtod(m, caddr_t) + len / 2);
-	bcopy(sav->lft_s, lt, sizeof(*lt));
-	m_cat(result, m);
-
-	/* set sadb_address for source */
-	m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
-	    (struct sockaddr *)&sav->sah->saidx.src,
-	    FULLMASK, IPSEC_ULPROTO_ANY);
-	if (!m) {
-		error = ENOBUFS;
-		goto fail;
-	}
-	m_cat(result, m);
-
-	/* set sadb_address for destination */
-	m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
-	    (struct sockaddr *)&sav->sah->saidx.dst,
-	    FULLMASK, IPSEC_ULPROTO_ANY);
-	if (!m) {
-		error = ENOBUFS;
-		goto fail;
-	}
-	m_cat(result, m);
-
-	if ((result->m_flags & M_PKTHDR) == 0) {
-		error = EINVAL;
-		goto fail;
-	}
-
-	if (result->m_len < sizeof(struct sadb_msg)) {
-		result = m_pullup(result, sizeof(struct sadb_msg));
-		if (result == NULL) {
-			error = ENOBUFS;
-			goto fail;
-		}
-	}
-
-	result->m_pkthdr.len = 0;
-	for (m = result; m; m = m->m_next)
-		result->m_pkthdr.len += m->m_len;
-
-	mtod(result, struct sadb_msg *)->sadb_msg_len =
-	    PFKEY_UNIT64(result->m_pkthdr.len);
-
-	splx(s);
-	return key_sendup_mbuf(NULL, result, KEY_SENDUP_REGISTERED);
-
- fail:
-	if (result)
-		m_freem(result);
-	splx(s);
-	return error;
-}
-
-/*
- * SADB_FLUSH processing
- * receive
- *   <base>
- * from the ikmpd, and free all entries in secastree.
- * and send,
- *   <base>
- * to the ikmpd.
- * NOTE: to do is only marking SADB_SASTATE_DEAD.
- *
- * m will always be freed.
- */
-static int
-key_flush(so, m, mhp)
-	struct socket *so;
-	struct mbuf *m;
-	const struct sadb_msghdr *mhp;
-{
-	struct sadb_msg *newmsg;
-	struct secashead *sah, *nextsah;
-	struct secasvar *sav, *nextsav;
-	u_int16_t proto;
-	u_int8_t state;
-	u_int stateidx;
-
-	/* sanity check */
-	if (so == NULL || mhp == NULL || mhp->msg == NULL)
-		panic("key_flush: NULL pointer is passed.");
-
-	/* map satype to proto */
-	if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
-		ipseclog((LOG_DEBUG, "key_flush: invalid satype is passed.\n"));
-		return key_senderror(so, m, EINVAL);
-	}
-
-	/* no SATYPE specified, i.e. flushing all SA. */
-	for (sah = LIST_FIRST(&sahtree); sah != NULL; sah = nextsah) {
-		nextsah = LIST_NEXT(sah, chain);
-
-		if (mhp->msg->sadb_msg_satype != SADB_SATYPE_UNSPEC &&
-		    proto != sah->saidx.proto)
-			continue;
-
-		for (stateidx = 0;
-		     stateidx < _ARRAYLEN(saorder_state_alive);
-		     stateidx++) {
-			state = saorder_state_any[stateidx];
-			for (sav = LIST_FIRST(&sah->savtree[state]);
-			     sav != NULL;
-			     sav = nextsav) {
-
-				nextsav = LIST_NEXT(sav, chain);
-
-				key_sa_chgstate(sav, SADB_SASTATE_DEAD);
-				key_freesav(sav);
-			}
-		}
-
-		sah->state = SADB_SASTATE_DEAD;
-	}
-
-	if (m->m_len < sizeof(struct sadb_msg) ||
-	    sizeof(struct sadb_msg) > m->m_len + M_TRAILINGSPACE(m)) {
-		ipseclog((LOG_DEBUG, "key_flush: No more memory.\n"));
-		return key_senderror(so, m, ENOBUFS);
-	}
-
-	if (m->m_next)
-		m_freem(m->m_next);
-	m->m_next = NULL;
-	m->m_pkthdr.len = m->m_len = sizeof(struct sadb_msg);
-	newmsg = mtod(m, struct sadb_msg *);
-	newmsg->sadb_msg_errno = 0;
-	newmsg->sadb_msg_len = PFKEY_UNIT64(m->m_pkthdr.len);
-
-	return key_sendup_mbuf(so, m, KEY_SENDUP_ALL);
-}
-
-/*
- * SADB_DUMP processing
- * dump all entries including status of DEAD in SAD.
- * receive
- *   <base>
- * from the ikmpd, and dump all secasvar leaves
- * and send,
- *   <base> .....
- * to the ikmpd.
- *
- * m will always be freed.
- */
-static int
-key_dump(so, m, mhp)
-	struct socket *so;
-	struct mbuf *m;
-	const struct sadb_msghdr *mhp;
-{
-	struct secashead *sah;
-	struct secasvar *sav;
-	u_int16_t proto;
-	u_int stateidx;
-	u_int8_t satype;
-	u_int8_t state;
-	int cnt;
-	struct mbuf *n;
-
-	/* sanity check */
-	if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
-		panic("key_dump: NULL pointer is passed.");
-
-	/* map satype to proto */
-	if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
-		ipseclog((LOG_DEBUG, "key_dump: invalid satype is passed.\n"));
-		return key_senderror(so, m, EINVAL);
-	}
-
-	/* count sav entries to be sent to the userland. */
-	cnt = 0;
-	LIST_FOREACH(sah, &sahtree, chain) {
-		if (mhp->msg->sadb_msg_satype != SADB_SATYPE_UNSPEC &&
-		    proto != sah->saidx.proto)
-			continue;
-
-		for (stateidx = 0;
-		     stateidx < _ARRAYLEN(saorder_state_any);
-		     stateidx++) {
-			state = saorder_state_any[stateidx];
-			LIST_FOREACH(sav, &sah->savtree[state], chain) {
-				cnt++;
-			}
-		}
-	}
-
-	if (cnt == 0)
-		return key_senderror(so, m, ENOENT);
-
-	/* send this to the userland, one at a time. */
-	LIST_FOREACH(sah, &sahtree, chain) {
-		if (mhp->msg->sadb_msg_satype != SADB_SATYPE_UNSPEC &&
-		    proto != sah->saidx.proto)
-			continue;
-
-		/* map proto to satype */
-		if ((satype = key_proto2satype(sah->saidx.proto)) == 0) {
-			ipseclog((LOG_DEBUG, "key_dump: there was invalid proto in SAD.\n"));
-			return key_senderror(so, m, EINVAL);
-		}
-
-		for (stateidx = 0;
-		     stateidx < _ARRAYLEN(saorder_state_any);
-		     stateidx++) {
-			state = saorder_state_any[stateidx];
-			LIST_FOREACH(sav, &sah->savtree[state], chain) {
-				n = key_setdumpsa(sav, SADB_DUMP, satype,
-				    --cnt, mhp->msg->sadb_msg_pid);
-				if (!n)
-					return key_senderror(so, m, ENOBUFS);
-
-				key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
-			}
-		}
-	}
-
-	m_freem(m);
-	return 0;
-}
-
-/*
- * SADB_X_PROMISC processing
- *
- * m will always be freed.
- */
-static int
-key_promisc(so, m, mhp)
-	struct socket *so;
-	struct mbuf *m;
-	const struct sadb_msghdr *mhp;
-{
-	int olen;
-
-	/* sanity check */
-	if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
-		panic("key_promisc: NULL pointer is passed.");
-
-	olen = PFKEY_UNUNIT64(mhp->msg->sadb_msg_len);
-
-	if (olen < sizeof(struct sadb_msg)) {
-#if 1
-		return key_senderror(so, m, EINVAL);
-#else
-		m_freem(m);
-		return 0;
-#endif
-	} else if (olen == sizeof(struct sadb_msg)) {
-		/* enable/disable promisc mode */
-		struct keycb *kp;
-
-		if ((kp = (struct keycb *)sotorawcb(so)) == NULL)
-			return key_senderror(so, m, EINVAL);
-		mhp->msg->sadb_msg_errno = 0;
-		switch (mhp->msg->sadb_msg_satype) {
-		case 0:
-		case 1:
-			kp->kp_promisc = mhp->msg->sadb_msg_satype;
-			break;
-		default:
-			return key_senderror(so, m, EINVAL);
-		}
-
-		/* send the original message back to everyone */
-		mhp->msg->sadb_msg_errno = 0;
-		return key_sendup_mbuf(so, m, KEY_SENDUP_ALL);
-	} else {
-		/* send packet as is */
-
-		m_adj(m, PFKEY_ALIGN8(sizeof(struct sadb_msg)));
-
-		/* TODO: if sadb_msg_seq is specified, send to specific pid */
-		return key_sendup_mbuf(so, m, KEY_SENDUP_ALL);
-	}
-}
-
-static int (*key_typesw[])(struct socket *, struct mbuf *,
-		const struct sadb_msghdr *) = {
-	NULL,		/* SADB_RESERVED */
-	key_getspi,	/* SADB_GETSPI */
-	key_update,	/* SADB_UPDATE */
-	key_add,	/* SADB_ADD */
-	key_delete,	/* SADB_DELETE */
-	key_get,	/* SADB_GET */
-	key_acquire2,	/* SADB_ACQUIRE */
-	key_register,	/* SADB_REGISTER */
-	NULL,		/* SADB_EXPIRE */
-	key_flush,	/* SADB_FLUSH */
-	key_dump,	/* SADB_DUMP */
-	key_promisc,	/* SADB_X_PROMISC */
-	NULL,		/* SADB_X_PCHANGE */
-	key_spdadd,	/* SADB_X_SPDUPDATE */
-	key_spdadd,	/* SADB_X_SPDADD */
-	key_spddelete,	/* SADB_X_SPDDELETE */
-	key_spdget,	/* SADB_X_SPDGET */
-	NULL,		/* SADB_X_SPDACQUIRE */
-	key_spddump,	/* SADB_X_SPDDUMP */
-	key_spdflush,	/* SADB_X_SPDFLUSH */
-	key_spdadd,	/* SADB_X_SPDSETIDX */
-	NULL,		/* SADB_X_SPDEXPIRE */
-	key_spddelete2,	/* SADB_X_SPDDELETE2 */
-};
-
-/*
- * parse sadb_msg buffer to process PFKEYv2,
- * and create a data to response if needed.
- * I think to be dealed with mbuf directly.
- * IN:
- *     msgp  : pointer to pointer to a received buffer pulluped.
- *             This is rewrited to response.
- *     so    : pointer to socket.
- * OUT:
- *    length for buffer to send to user process.
- */
-int
-key_parse(m, so)
-	struct mbuf *m;
-	struct socket *so;
-{
-	struct sadb_msg *msg;
-	struct sadb_msghdr mh;
-	u_int orglen;
-	int error;
-	int target;
-#ifdef INET6
-	struct sockaddr_in6 *sin6;
-#endif
-
-	/* sanity check */
-	if (m == NULL || so == NULL)
-		panic("key_parse: NULL pointer is passed.");
-
-#if 0	/*kdebug_sadb assumes msg in linear buffer*/
-	KEYDEBUG(KEYDEBUG_KEY_DUMP,
-		ipseclog((LOG_DEBUG, "key_parse: passed sadb_msg\n"));
-		kdebug_sadb(msg));
-#endif
-
-	if (m->m_len < sizeof(struct sadb_msg)) {
-		m = m_pullup(m, sizeof(struct sadb_msg));
-		if (!m)
-			return ENOBUFS;
-	}
-	msg = mtod(m, struct sadb_msg *);
-	orglen = PFKEY_UNUNIT64(msg->sadb_msg_len);
-	target = KEY_SENDUP_ONE;
-
-	if ((m->m_flags & M_PKTHDR) == 0 ||
-	    m->m_pkthdr.len != m->m_pkthdr.len) {
-		ipseclog((LOG_DEBUG, "key_parse: invalid message length.\n"));
-		pfkeystat.out_invlen++;
-		error = EINVAL;
-		goto senderror;
-	}
-
-	if (msg->sadb_msg_version != PF_KEY_V2) {
-		ipseclog((LOG_DEBUG,
-		    "key_parse: PF_KEY version %u is mismatched.\n",
-		    msg->sadb_msg_version));
-		pfkeystat.out_invver++;
-		error = EINVAL;
-		goto senderror;
-	}
-
-	if (msg->sadb_msg_type > SADB_MAX) {
-		ipseclog((LOG_DEBUG, "key_parse: invalid type %u is passed.\n",
-		    msg->sadb_msg_type));
-		pfkeystat.out_invmsgtype++;
-		error = EINVAL;
-		goto senderror;
-	}
-
-	/* for old-fashioned code - should be nuked */
-	if (m->m_pkthdr.len > MCLBYTES) {
-		m_freem(m);
-		return ENOBUFS;
-	}
-	if (m->m_next) {
-		struct mbuf *n;
-
-		MGETHDR(n, M_DONTWAIT, MT_DATA);
-		if (n && m->m_pkthdr.len > MHLEN) {
-			MCLGET(n, M_DONTWAIT);
-			if ((n->m_flags & M_EXT) == 0) {
-				m_free(n);
-				n = NULL;
-			}
-		}
-		if (!n) {
-			m_freem(m);
-			return ENOBUFS;
-		}
-		m_copydata(m, 0, m->m_pkthdr.len, mtod(n, caddr_t));
-		n->m_pkthdr.len = n->m_len = m->m_pkthdr.len;
-		n->m_next = NULL;
-		m_freem(m);
-		m = n;
-	}
-
-	/* align the mbuf chain so that extensions are in contiguous region. */
-	error = key_align(m, &mh);
-	if (error)
-		return error;
-
-	msg = mh.msg;
-
-	/* check SA type */
-	switch (msg->sadb_msg_satype) {
-	case SADB_SATYPE_UNSPEC:
-		switch (msg->sadb_msg_type) {
-		case SADB_GETSPI:
-		case SADB_UPDATE:
-		case SADB_ADD:
-		case SADB_DELETE:
-		case SADB_GET:
-		case SADB_ACQUIRE:
-		case SADB_EXPIRE:
-			ipseclog((LOG_DEBUG, "key_parse: must specify satype "
-			    "when msg type=%u.\n", msg->sadb_msg_type));
-			pfkeystat.out_invsatype++;
-			error = EINVAL;
-			goto senderror;
-		}
-		break;
-	case SADB_SATYPE_AH:
-	case SADB_SATYPE_ESP:
-	case SADB_X_SATYPE_IPCOMP:
-	case SADB_X_SATYPE_TCPSIGNATURE:
-		switch (msg->sadb_msg_type) {
-		case SADB_X_SPDADD:
-		case SADB_X_SPDDELETE:
-		case SADB_X_SPDGET:
-		case SADB_X_SPDDUMP:
-		case SADB_X_SPDFLUSH:
-		case SADB_X_SPDSETIDX:
-		case SADB_X_SPDUPDATE:
-		case SADB_X_SPDDELETE2:
-			ipseclog((LOG_DEBUG, "key_parse: illegal satype=%u\n",
-			    msg->sadb_msg_type));
-			pfkeystat.out_invsatype++;
-			error = EINVAL;
-			goto senderror;
-		}
-		break;
-	case SADB_SATYPE_RSVP:
-	case SADB_SATYPE_OSPFV2:
-	case SADB_SATYPE_RIPV2:
-	case SADB_SATYPE_MIP:
-		ipseclog((LOG_DEBUG, "key_parse: type %u isn't supported.\n",
-		    msg->sadb_msg_satype));
-		pfkeystat.out_invsatype++;
-		error = EOPNOTSUPP;
-		goto senderror;
-	case 1:	/* XXX: What does it do? */
-		if (msg->sadb_msg_type == SADB_X_PROMISC)
-			break;
-		/*FALLTHROUGH*/
-	default:
-		ipseclog((LOG_DEBUG, "key_parse: invalid type %u is passed.\n",
-		    msg->sadb_msg_satype));
-		pfkeystat.out_invsatype++;
-		error = EINVAL;
-		goto senderror;
-	}
-
-	/* check field of upper layer protocol and address family */
-	if (mh.ext[SADB_EXT_ADDRESS_SRC] != NULL &&
-	    mh.ext[SADB_EXT_ADDRESS_DST] != NULL) {
-		struct sadb_address *src0, *dst0;
-		u_int plen;
-
-		src0 = (struct sadb_address *)(mh.ext[SADB_EXT_ADDRESS_SRC]);
-		dst0 = (struct sadb_address *)(mh.ext[SADB_EXT_ADDRESS_DST]);
-
-		/* check upper layer protocol */
-		if (src0->sadb_address_proto != dst0->sadb_address_proto) {
-			ipseclog((LOG_DEBUG, "key_parse: upper layer protocol mismatched.\n"));
-			pfkeystat.out_invaddr++;
-			error = EINVAL;
-			goto senderror;
-		}
-
-		/* check family */
-		if (PFKEY_ADDR_SADDR(src0)->sa_family !=
-		    PFKEY_ADDR_SADDR(dst0)->sa_family) {
-			ipseclog((LOG_DEBUG, "key_parse: address family mismatched.\n"));
-			pfkeystat.out_invaddr++;
-			error = EINVAL;
-			goto senderror;
-		}
-		if (PFKEY_ADDR_SADDR(src0)->sa_len !=
-		    PFKEY_ADDR_SADDR(dst0)->sa_len) {
-			ipseclog((LOG_DEBUG,
-			    "key_parse: address struct size mismatched.\n"));
-			pfkeystat.out_invaddr++;
-			error = EINVAL;
-			goto senderror;
-		}
-
-		switch (PFKEY_ADDR_SADDR(src0)->sa_family) {
-		case AF_INET:
-			if (PFKEY_ADDR_SADDR(src0)->sa_len !=
-			    sizeof(struct sockaddr_in)) {
-				pfkeystat.out_invaddr++;
-				error = EINVAL;
-				goto senderror;
-			}
-			break;
-		case AF_INET6:
-			if (PFKEY_ADDR_SADDR(src0)->sa_len !=
-			    sizeof(struct sockaddr_in6)) {
-				pfkeystat.out_invaddr++;
-				error = EINVAL;
-				goto senderror;
-			}
-#ifdef INET6
-			/*
-			 * Check validity of the scope zone ID of the
-			 * addresses, and embed the zone ID into the address
-			 * if necessary.
-			 */
-			sin6 = (struct sockaddr_in6 *)PFKEY_ADDR_SADDR(src0);
-			if ((error = sa6_embedscope(sin6, 0)) != 0)
-				goto senderror;
-			sin6 = (struct sockaddr_in6 *)PFKEY_ADDR_SADDR(dst0);
-			if ((error = sa6_embedscope(sin6, 0)) != 0)
-				goto senderror;
-#endif
-			break;
-		default:
-			ipseclog((LOG_DEBUG,
-			    "key_parse: unsupported address family.\n"));
-			pfkeystat.out_invaddr++;
-			error = EAFNOSUPPORT;
-			goto senderror;
-		}
-
-		switch (PFKEY_ADDR_SADDR(src0)->sa_family) {
-		case AF_INET:
-			plen = sizeof(struct in_addr) << 3;
-			break;
-		case AF_INET6:
-			plen = sizeof(struct in6_addr) << 3;
-			break;
-		default:
-			plen = 0;	/*fool gcc*/
-			break;
-		}
-
-		/* check max prefix length */
-		if (src0->sadb_address_prefixlen > plen ||
-		    dst0->sadb_address_prefixlen > plen) {
-			ipseclog((LOG_DEBUG,
-			    "key_parse: illegal prefixlen.\n"));
-			pfkeystat.out_invaddr++;
-			error = EINVAL;
-			goto senderror;
-		}
-
-		/*
-		 * prefixlen == 0 is valid because there can be a case when
-		 * all addresses are matched.
-		 */
-	}
-
-	if (msg->sadb_msg_type >= sizeof(key_typesw)/sizeof(key_typesw[0]) ||
-	    key_typesw[msg->sadb_msg_type] == NULL) {
-		pfkeystat.out_invmsgtype++;
-		error = EINVAL;
-		goto senderror;
-	}
-
-	return (*key_typesw[msg->sadb_msg_type])(so, m, &mh);
-
-senderror:
-	msg->sadb_msg_errno = error;
-	return key_sendup_mbuf(so, m, target);
-}
-
-static int
-key_senderror(so, m, code)
-	struct socket *so;
-	struct mbuf *m;
-	int code;
-{
-	struct sadb_msg *msg;
-
-	if (m->m_len < sizeof(struct sadb_msg))
-		panic("invalid mbuf passed to key_senderror");
-
-	msg = mtod(m, struct sadb_msg *);
-	msg->sadb_msg_errno = code;
-	return key_sendup_mbuf(so, m, KEY_SENDUP_ONE);
-}
-
-/*
- * set the pointer to each header into message buffer.
- * m will be freed on error.
- * XXX larger-than-MCLBYTES extension?
- */
-static int
-key_align(m, mhp)
-	struct mbuf *m;
-	struct sadb_msghdr *mhp;
-{
-	struct mbuf *n;
-	struct sadb_ext *ext;
-	size_t off, end;
-	int extlen;
-	int toff;
-
-	/* sanity check */
-	if (m == NULL || mhp == NULL)
-		panic("key_align: NULL pointer is passed.");
-	if (m->m_len < sizeof(struct sadb_msg))
-		panic("invalid mbuf passed to key_align");
-
-	/* initialize */
-	bzero(mhp, sizeof(*mhp));
-
-	mhp->msg = mtod(m, struct sadb_msg *);
-	mhp->ext[0] = (struct sadb_ext *)mhp->msg;	/*XXX backward compat */
-
-	end = PFKEY_UNUNIT64(mhp->msg->sadb_msg_len);
-	extlen = end;	/*just in case extlen is not updated*/
-	for (off = sizeof(struct sadb_msg); off < end; off += extlen) {
-		n = m_pulldown(m, off, sizeof(struct sadb_ext), &toff);
-		if (!n) {
-			/* m is already freed */
-			return ENOBUFS;
-		}
-		ext = (struct sadb_ext *)(mtod(n, caddr_t) + toff);
-
-		/* set pointer */
-		switch (ext->sadb_ext_type) {
-		case SADB_EXT_SA:
-		case SADB_EXT_ADDRESS_SRC:
-		case SADB_EXT_ADDRESS_DST:
-		case SADB_EXT_ADDRESS_PROXY:
-		case SADB_EXT_LIFETIME_CURRENT:
-		case SADB_EXT_LIFETIME_HARD:
-		case SADB_EXT_LIFETIME_SOFT:
-		case SADB_EXT_KEY_AUTH:
-		case SADB_EXT_KEY_ENCRYPT:
-		case SADB_EXT_IDENTITY_SRC:
-		case SADB_EXT_IDENTITY_DST:
-		case SADB_EXT_SENSITIVITY:
-		case SADB_EXT_PROPOSAL:
-		case SADB_EXT_SUPPORTED_AUTH:
-		case SADB_EXT_SUPPORTED_ENCRYPT:
-		case SADB_EXT_SPIRANGE:
-		case SADB_X_EXT_POLICY:
-		case SADB_X_EXT_SA2:
-			/* duplicate check */
-			/*
-			 * XXX Are there duplication payloads of either
-			 * KEY_AUTH or KEY_ENCRYPT ?
-			 */
-			if (mhp->ext[ext->sadb_ext_type] != NULL) {
-				ipseclog((LOG_DEBUG,
-				    "key_align: duplicate ext_type %u "
-				    "is passed.\n", ext->sadb_ext_type));
-				m_freem(m);
-				pfkeystat.out_dupext++;
-				return EINVAL;
-			}
-			break;
-		default:
-			ipseclog((LOG_DEBUG,
-			    "key_align: invalid ext_type %u is passed.\n",
-			    ext->sadb_ext_type));
-			m_freem(m);
-			pfkeystat.out_invexttype++;
-			return EINVAL;
-		}
-
-		extlen = PFKEY_UNUNIT64(ext->sadb_ext_len);
-
-		if (key_validate_ext(ext, extlen)) {
-			m_freem(m);
-			pfkeystat.out_invlen++;
-			return EINVAL;
-		}
-
-		n = m_pulldown(m, off, extlen, &toff);
-		if (!n) {
-			/* m is already freed */
-			return ENOBUFS;
-		}
-		ext = (struct sadb_ext *)(mtod(n, caddr_t) + toff);
-
-		mhp->ext[ext->sadb_ext_type] = ext;
-		mhp->extoff[ext->sadb_ext_type] = off;
-		mhp->extlen[ext->sadb_ext_type] = extlen;
-	}
-
-	if (off != end) {
-		m_freem(m);
-		pfkeystat.out_invlen++;
-		return EINVAL;
-	}
-
-	return 0;
-}
-
-static int
-key_validate_ext(ext, len)
-	struct sadb_ext *ext;
-	int len;
-{
-	struct sockaddr *sa;
-	enum { NONE, ADDR } checktype = NONE;
-	int baselen = 0;
-	const int sal = offsetof(struct sockaddr, sa_len) + sizeof(sa->sa_len);
-
-	if (len != PFKEY_UNUNIT64(ext->sadb_ext_len))
-		return EINVAL;
-
-	/* if it does not match minimum/maximum length, bail */
-	if (ext->sadb_ext_type >= sizeof(minsize) / sizeof(minsize[0]) ||
-	    ext->sadb_ext_type >= sizeof(maxsize) / sizeof(maxsize[0]))
-		return EINVAL;
-	if (!minsize[ext->sadb_ext_type] || len < minsize[ext->sadb_ext_type])
-		return EINVAL;
-	if (maxsize[ext->sadb_ext_type] && len > maxsize[ext->sadb_ext_type])
-		return EINVAL;
-
-	/* more checks based on sadb_ext_type XXX need more */
-	switch (ext->sadb_ext_type) {
-	case SADB_EXT_ADDRESS_SRC:
-	case SADB_EXT_ADDRESS_DST:
-	case SADB_EXT_ADDRESS_PROXY:
-		baselen = PFKEY_ALIGN8(sizeof(struct sadb_address));
-		checktype = ADDR;
-		break;
-	case SADB_EXT_IDENTITY_SRC:
-	case SADB_EXT_IDENTITY_DST:
-		if (((struct sadb_ident *)ext)->sadb_ident_type ==
-		    SADB_X_IDENTTYPE_ADDR) {
-			baselen = PFKEY_ALIGN8(sizeof(struct sadb_ident));
-			checktype = ADDR;
-		} else
-			checktype = NONE;
-		break;
-	default:
-		checktype = NONE;
-		break;
-	}
-
-	switch (checktype) {
-	case NONE:
-		break;
-	case ADDR:
-		sa = (struct sockaddr *)((caddr_t)ext + baselen);
-		if (len < baselen + sal)
-			return EINVAL;
-		if (baselen + PFKEY_ALIGN8(sa->sa_len) != len)
-			return EINVAL;
-		break;
-	}
-
-	return 0;
-}
-
-void
-key_init()
-{
-	int i;
-
-	bzero((caddr_t)&key_cb, sizeof(key_cb));
-
-	callout_init(&key_timehandler_ch, 0);
-
-	for (i = 0; i < IPSEC_DIR_MAX; i++)
-		LIST_INIT(&sptree[i]);
-
-	LIST_INIT(&sahtree);
-
-	for (i = 0; i <= SADB_SATYPE_MAX; i++)
-		LIST_INIT(&regtree[i]);
-
-	for (i = 0; i < SPIHASHSIZE; i++)
-		LIST_INIT(&spihash[i]);
-
-#ifndef IPSEC_NONBLOCK_ACQUIRE
-	LIST_INIT(&acqtree);
-#endif
-	LIST_INIT(&spacqtree);
-
-	TAILQ_INIT(&satailq);
-	TAILQ_INIT(&sptailq);
-
-	/* system default */
-#ifdef INET
-	ip4_def_policy = key_newsp(0);
-	if (!ip4_def_policy)
-		panic("could not initialize IPv4 default security policy");
-	ip4_def_policy->state = IPSEC_SPSTATE_ALIVE;
-	ip4_def_policy->policy = IPSEC_POLICY_NONE;
-	ip4_def_policy->dir = IPSEC_DIR_ANY;
-	ip4_def_policy->readonly = 1;
-	ip4_def_policy->persist = 1;
-#endif
-#ifdef INET6
-	ip6_def_policy = key_newsp(0);
-	if (!ip6_def_policy)
-		panic("could not initialize IPv6 default security policy");
-	ip6_def_policy->state = IPSEC_SPSTATE_ALIVE;
-	ip6_def_policy->policy = IPSEC_POLICY_NONE;
-	ip6_def_policy->dir = IPSEC_DIR_ANY;
-	ip6_def_policy->readonly = 1;
-	ip6_def_policy->persist = 1;
-#endif
-
-	callout_reset(&key_timehandler_ch, hz, key_timehandler, (void *)0);
-
-	/* initialize key statistics */
-	keystat.getspi_count = 1;
-
-	printf("IPsec: Initialized Security Association Processing.\n");
-
-	return;
-}
-
-/*
- * XXX: maybe This function is called after INBOUND IPsec processing.
- *
- * Special check for tunnel-mode packets.
- * We must make some checks for consistency between inner and outer IP header.
- *
- * xxx more checks to be provided
- */
-int
-key_checktunnelsanity(sav, family, src, dst)
-	struct secasvar *sav;
-	u_int family;
-	caddr_t src;
-	caddr_t dst;
-{
-	/* sanity check */
-	if (sav->sah == NULL)
-		panic("sav->sah == NULL at key_checktunnelsanity");
-
-	/* XXX: check inner IP header */
-
-	return 1;
-}
-
-#if 0
-/*
- * Get FQDN for the host.
- * If the administrator configured hostname (by hostname(1)) without
- * domain name, returns nothing.
- */
-static const char *
-key_getfqdn()
-{
-	int i;
-	int hasdot;
-	static char fqdn[MAXHOSTNAMELEN + 1];
-	int hostnamelen = strlen(hostname);
-
-	if (!hostnamelen)
-		return NULL;
-
-	/* check if it comes with domain name. */
-	hasdot = 0;
-	for (i = 0; i < hostnamelen; i++) {
-		if (hostname[i] == '.')
-			hasdot++;
-	}
-	if (!hasdot)
-		return NULL;
-
-	/* NOTE: hostname may not be NUL-terminated. */
-	bzero(fqdn, sizeof(fqdn));
-	bcopy(hostname, fqdn, hostnamelen);
-	fqdn[hostnamelen] = '\0';
-	return fqdn;
-}
-
-/*
- * get username@FQDN for the host/user.
- */
-static const char *
-key_getuserfqdn()
-{
-	const char *host;
-	static char userfqdn[MAXHOSTNAMELEN + MAXLOGNAME + 2];
-	struct proc *p = curproc;
-	char *q;
-
-	PROC_LOCK(p);
-	if (!p || !p->p_pgrp || !p->p_pgrp->pg_session) {
-		PROC_UNLOCK(p);
-		return NULL;
-	}
-	if (!(host = key_getfqdn())) {
-		PROC_UNLOCK(p);
-		return NULL;
-	}
-
-	/* NOTE: s_login may not be-NUL terminated. */
-	bzero(userfqdn, sizeof(userfqdn));
-	SESS_LOCK(p->p_session);
-	bcopy(p->p_pgrp->pg_session->s_login, userfqdn, MAXLOGNAME);
-	SESS_UNLOCK(p->p_session);
-	PROC_UNLOCK(p);
-	userfqdn[MAXLOGNAME] = '\0';	/* safeguard */
-	q = userfqdn + strlen(userfqdn);
-	*q++ = '@';
-	bcopy(host, q, strlen(host));
-	q += strlen(host);
-	*q++ = '\0';
-
-	return userfqdn;
-}
-#endif
-
-/* record data transfer on SA, and update timestamps */
-void
-key_sa_recordxfer(sav, m)
-	struct secasvar *sav;
-	struct mbuf *m;
-{
-	if (!sav)
-		panic("key_sa_recordxfer called with sav == NULL");
-	if (!m)
-		panic("key_sa_recordxfer called with m == NULL");
-	if (!sav->lft_c)
-		return;
-
-	/*
-	 * XXX Currently, there is a difference of bytes size
-	 * between inbound and outbound processing.
-	 */
-	sav->lft_c->sadb_lifetime_bytes += m->m_pkthdr.len;
-	/* to check bytes lifetime is done in key_timehandler(). */
-
-	/*
-	 * We use the number of packets as the unit of
-	 * sadb_lifetime_allocations.  We increment the variable
-	 * whenever {esp,ah}_{in,out}put is called.
-	 */
-	sav->lft_c->sadb_lifetime_allocations++;
-	/* XXX check for expires? */
-
-	/*
-	 * NOTE: We record CURRENT sadb_lifetime_usetime by using wall clock,
-	 * in seconds.  HARD and SOFT lifetime are measured by the time
-	 * difference (again in seconds) from sadb_lifetime_usetime.
-	 *
-	 *	usetime
-	 *	v     expire   expire
-	 * -----+-----+--------+---> t
-	 *	<--------------> HARD
-	 *	<-----> SOFT
-	 */
-    {
-	sav->lft_c->sadb_lifetime_usetime = time_second;
-	/* XXX check for expires? */
-    }
-
-	return;
-}
-
-/* dumb version */
-void
-key_sa_routechange(dst)
-	struct sockaddr *dst;
-{
-	struct secashead *sah;
-	struct route *ro;
-
-	LIST_FOREACH(sah, &sahtree, chain) {
-		ro = &sah->sa_route;
-		if (ro->ro_rt && dst->sa_len == ro->ro_dst.sa_len &&
-		    bcmp(dst, &ro->ro_dst, dst->sa_len) == 0) {
-			RTFREE(ro->ro_rt);
-			ro->ro_rt = (struct rtentry *)NULL;
-		}
-	}
-
-	return;
-}
-
-static void
-key_sa_chgstate(sav, state)
-	struct secasvar *sav;
-	u_int8_t state;
-{
-	if (sav == NULL)
-		panic("key_sa_chgstate called with sav == NULL");
-
-	if (sav->state == state)
-		return;
-
-	if (__LIST_CHAINED(sav))
-		LIST_REMOVE(sav, chain);
-
-	sav->state = state;
-	LIST_INSERT_HEAD(&sav->sah->savtree[state], sav, chain);
-}
-
-void
-key_sa_stir_iv(sav)
-	struct secasvar *sav;
-{
-
-	if (!sav->iv)
-		panic("key_sa_stir_iv called with sav == NULL");
-	key_randomfill(sav->iv, sav->ivlen);
-}
-
-static void
-key_sp_dead(sp)
-	struct secpolicy *sp;
-{
-
-	/* mark the SP dead */
-	sp->state = IPSEC_SPSTATE_DEAD;
-}
-
-static void
-key_sp_unlink(sp)
-	struct secpolicy *sp;
-{
-
-	/* remove from SP index */
-	if (__LIST_CHAINED(sp)) {
-		LIST_REMOVE(sp, chain);
-		key_freesp(sp);
-	}
-}
-
-/* XXX too much? */
-static struct mbuf *
-key_alloc_mbuf(l)
-	int l;
-{
-	struct mbuf *m = NULL, *n;
-	int len, t;
-
-	len = l;
-	while (len > 0) {
-		MGET(n, M_DONTWAIT, MT_DATA);
-		if (n && len > MLEN)
-			MCLGET(n, M_DONTWAIT);
-		if (!n) {
-			m_freem(m);
-			return NULL;
-		}
-
-		n->m_next = NULL;
-		n->m_len = 0;
-		n->m_len = M_TRAILINGSPACE(n);
-		/* use the bottom of mbuf, hoping we can prepend afterwards */
-		if (n->m_len > len) {
-			t = (n->m_len - len) & ~(sizeof(long) - 1);
-			n->m_data += t;
-			n->m_len = len;
-		}
-
-		len -= n->m_len;
-
-		if (m)
-			m_cat(m, n);
-		else
-			m = n;
-	}
-
-	return m;
-}