1/* $NetBSD: key.h,v 1.11 2011/06/09 19:54:18 drochner Exp $ */ 2/* $FreeBSD: src/sys/netipsec/key.h,v 1.1.4.1 2003/01/24 05:11:36 sam Exp $ */ 3/* $KAME: key.h,v 1.21 2001/07/27 03:51:30 itojun Exp $ */ 4 5/* 6 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. Neither the name of the project nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34#ifndef _NETIPSEC_KEY_H_ 35#define _NETIPSEC_KEY_H_ 36 37#ifdef _KERNEL 38 39#include "opt_ipsec.h" 40 41struct secpolicy; 42struct secpolicyindex; 43struct ipsecrequest; 44struct secasvar; 45struct sockaddr; 46struct socket; 47struct sadb_msg; 48struct sadb_x_policy; 49struct secasindex; 50union sockaddr_union; 51 52int key_havesp(u_int dir); 53struct secpolicy *key_allocsp(const struct secpolicyindex *, u_int, 54 const char*, int); 55struct secpolicy *key_allocsp2(u_int32_t spi, const union sockaddr_union *dst, 56 u_int8_t proto, u_int dir, const char*, int); 57struct secpolicy *key_newsp(const char*, int); 58struct secpolicy *key_gettunnel(const struct sockaddr *, 59 const struct sockaddr *, const struct sockaddr *, 60 const struct sockaddr *, const char*, int); 61/* NB: prepend with _ for KAME IPv6 compatbility */ 62void _key_freesp(struct secpolicy **, const char*, int); 63 64/* 65 * Access to the SADB are interlocked with splsoftnet. In particular, 66 * holders of SA's use this to block accesses by protocol processing 67 * that can happen either by network swi's or by continuations that 68 * occur on crypto callbacks. Much of this could go away if 69 * key_checkrequest were redone. 70 */ 71#define KEY_ALLOCSP(spidx, dir) \ 72 key_allocsp(spidx, dir, __FILE__, __LINE__) 73#define KEY_ALLOCSP2(spi, dst, proto, dir) \ 74 key_allocsp2(spi, dst, proto, dir, __FILE__, __LINE__) 75#define KEY_NEWSP() \ 76 key_newsp(__FILE__, __LINE__) 77#define KEY_GETTUNNEL(osrc, odst, isrc, idst) \ 78 key_gettunnel(osrc, odst, isrc, idst, __FILE__, __LINE__) 79#define KEY_FREESP(spp) \ 80 _key_freesp(spp, __FILE__, __LINE__) 81 82struct secasvar *key_allocsa(const union sockaddr_union *, 83 u_int, u_int32_t, u_int16_t, u_int16_t, const char*, int); 84void key_freesav(struct secasvar **, const char*, int); 85 86#define KEY_ALLOCSA(dst, proto, spi, sport, dport) \ 87 key_allocsa(dst, proto, spi, sport, dport, __FILE__, __LINE__) 88#define KEY_FREESAV(psav) \ 89 key_freesav(psav, __FILE__, __LINE__) 90 91void key_freeso (struct socket *); 92int key_checktunnelsanity (struct secasvar *, u_int, void *, void *); 93int key_checkrequest (struct ipsecrequest *isr, const struct secasindex *); 94 95struct secpolicy *key_msg2sp (const struct sadb_x_policy *, size_t, int *); 96struct mbuf *key_sp2msg (const struct secpolicy *); 97int key_ismyaddr (const struct sockaddr *); 98int key_cmpspidx_exactly (const struct secpolicyindex *, const struct secpolicyindex *); 99int key_cmpspidx_withmask (const struct secpolicyindex *, const struct secpolicyindex *); 100int key_spdacquire (const struct secpolicy *); 101void key_timehandler (void*); 102u_long key_random (void); 103void key_randomfill (void *, size_t); 104void key_freereg (struct socket *); 105int key_parse (struct mbuf *, struct socket *); 106void key_init (void); 107void key_sa_recordxfer (struct secasvar *, struct mbuf *); 108void key_sa_routechange (struct sockaddr *); 109 110#ifdef IPSEC_NAT_T 111u_int16_t key_portfromsaddr (const union sockaddr_union *); 112#endif 113 114 115 116#ifdef MALLOC_DECLARE 117MALLOC_DECLARE(M_SECA); 118#endif /* MALLOC_DECLARE */ 119 120/* XXX: referenced by kernfs, but not implemented... */ 121extern TAILQ_HEAD(_satailq, secasvar) satailq; 122extern TAILQ_HEAD(_sptailq, secpolicy) sptailq; 123 124#endif /* defined(_KERNEL) */ 125#endif /* !_NETIPSEC_KEY_H_ */ 126