/* $NetBSD: key.h,v 1.38 2022/12/08 08:05:03 knakahara Exp $ */ /* $FreeBSD: key.h,v 1.1.4.1 2003/01/24 05:11:36 sam Exp $ */ /* $KAME: key.h,v 1.21 2001/07/27 03:51:30 itojun Exp $ */ /* * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the project nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef _NETIPSEC_KEY_H_ #define _NETIPSEC_KEY_H_ #ifdef _KERNEL struct secpolicy; struct secpolicyindex; struct ipsecrequest; struct secasvar; struct sockaddr; struct socket; struct secasindex; union sockaddr_union; #include struct sadb_msghdr { struct sadb_msg *msg; void *ext[SADB_EXT_MAX + 1]; int extoff[SADB_EXT_MAX + 1]; int extlen[SADB_EXT_MAX + 1]; }; int key_havesp(u_int dir); struct secpolicy *key_lookup_sp_byspidx(const struct secpolicyindex *, u_int, const char *, int); struct secpolicy *key_newsp(const char*, int); struct secpolicy *key_gettunnel(const struct sockaddr *, const struct sockaddr *, const struct sockaddr *, const struct sockaddr *, const char *, int); /* NB: prepend with _ for KAME IPv6 compatibility */ void key_init_sp(struct secpolicy *); void key_free_sp(struct secpolicy *); u_int key_sp_refcnt(const struct secpolicy *); void key_sp_ref(struct secpolicy *, const char *, int); void key_sp_unref(struct secpolicy *, const char *, int); void key_sp_touch(struct secpolicy *); void key_sa_ref(struct secasvar *, const char *, int); void key_sa_unref(struct secasvar *, const char *, int); u_int key_sa_refcnt(const struct secasvar *); void key_socksplist_add(struct secpolicy *); /* * Access to the SADB are interlocked with splsoftnet. In particular, * holders of SA's use this to block accesses by protocol processing * that can happen either by network swi's or by continuations that * occur on crypto callbacks. Much of this could go away if * key_checkrequest were redone. */ #define KEY_LOOKUP_SP_BYSPIDX(spidx, dir) \ key_lookup_sp_byspidx(spidx, dir, __func__, __LINE__) #define KEY_NEWSP() \ key_newsp(__func__, __LINE__) #define KEY_GETTUNNEL(osrc, odst, isrc, idst) \ key_gettunnel(osrc, odst, isrc, idst, __func__, __LINE__) #define KEY_SP_UNREF(spp) \ key_sp_unref(*(spp), __func__, __LINE__) #define KEY_SP_REF(sp) \ key_sp_ref(sp, __func__, __LINE__) #define KEY_SA_REF(sav) \ key_sa_ref(sav, __func__, __LINE__) #define KEY_SA_UNREF(psav) \ key_sa_unref(*(psav), __func__, __LINE__) struct secasvar *key_lookup_sa(const union sockaddr_union *, u_int, u_int32_t, u_int16_t, u_int16_t, const char *, int); void key_freesav(struct secasvar **, const char *, int); struct secasvar *key_lookup_sa_bysaidx(const struct secasindex *); #define KEY_LOOKUP_SA(dst, proto, spi, sport, dport) \ key_lookup_sa(dst, proto, spi, sport, dport, __func__, __LINE__) int key_checktunnelsanity(struct secasvar *, u_int, void *, void *); int key_checkrequest(const struct ipsecrequest *, const struct secasindex *, struct secasvar **); struct secpolicy *key_msg2sp(const struct sadb_x_policy *, size_t, int *); struct mbuf *key_sp2msg(const struct secpolicy *, int); int key_ismyaddr(const struct sockaddr *); int key_spdacquire(const struct secpolicy *); u_long key_random(void); void key_randomfill(void *, size_t); void key_freereg(struct socket *); int key_parse(struct mbuf *, struct socket *); void key_init(void); void key_sa_recordxfer(struct secasvar *, struct mbuf *); void key_sa_routechange(struct sockaddr *); void key_update_used(void); int key_get_used(void); u_int16_t key_portfromsaddr(const union sockaddr_union *); /* for ipsec(4) */ struct secpolicy *key_kpi_spdadd(struct mbuf *); int key_kpi_spddelete2(struct mbuf *); u_int16_t key_newreqid(void); #endif /* defined(_KERNEL) */ #endif /* !_NETIPSEC_KEY_H_ */