1 /* $NetBSD: key.h,v 1.33 2017/11/21 07:03:08 ozaki-r 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 struct secpolicy; 40 struct secpolicyindex; 41 struct ipsecrequest; 42 struct secasvar; 43 struct sockaddr; 44 struct socket; 45 struct sadb_msg; 46 struct sadb_x_policy; 47 struct secasindex; 48 union sockaddr_union; 49 50 int key_havesp(u_int dir); 51 struct secpolicy *key_lookup_sp_byspidx(const struct secpolicyindex *, u_int, 52 const char*, int); 53 struct secpolicy *key_newsp(const char*, int); 54 struct secpolicy *key_gettunnel(const struct sockaddr *, 55 const struct sockaddr *, const struct sockaddr *, 56 const struct sockaddr *, const char*, int); 57 /* NB: prepend with _ for KAME IPv6 compatbility */ 58 void key_init_sp(struct secpolicy *); 59 void key_free_sp(struct secpolicy *); 60 u_int key_sp_refcnt(const struct secpolicy *); 61 void key_sp_ref(struct secpolicy *, const char*, int); 62 void key_sp_unref(struct secpolicy *, const char*, int); 63 void key_sa_ref(struct secasvar *, const char*, int); 64 void key_sa_unref(struct secasvar *, const char*, int); 65 u_int key_sa_refcnt(const struct secasvar *); 66 67 void key_socksplist_add(struct secpolicy *); 68 69 /* 70 * Access to the SADB are interlocked with splsoftnet. In particular, 71 * holders of SA's use this to block accesses by protocol processing 72 * that can happen either by network swi's or by continuations that 73 * occur on crypto callbacks. Much of this could go away if 74 * key_checkrequest were redone. 75 */ 76 #define KEY_LOOKUP_SP_BYSPIDX(spidx, dir) \ 77 key_lookup_sp_byspidx(spidx, dir, __func__, __LINE__) 78 #define KEY_NEWSP() \ 79 key_newsp(__func__, __LINE__) 80 #define KEY_GETTUNNEL(osrc, odst, isrc, idst) \ 81 key_gettunnel(osrc, odst, isrc, idst, __func__, __LINE__) 82 #define KEY_SP_UNREF(spp) \ 83 key_sp_unref(*(spp), __func__, __LINE__) 84 #define KEY_SP_REF(sp) \ 85 key_sp_ref(sp, __func__, __LINE__) 86 #define KEY_SA_REF(sav) \ 87 key_sa_ref(sav, __func__, __LINE__) 88 #define KEY_SA_UNREF(psav) \ 89 key_sa_unref(*(psav), __func__, __LINE__) 90 91 struct secasvar *key_lookup_sa(const union sockaddr_union *, 92 u_int, u_int32_t, u_int16_t, u_int16_t, const char*, int); 93 void key_freesav(struct secasvar **, const char*, int); 94 struct secasvar *key_lookup_sa_bysaidx(const struct secasindex *); 95 96 #define KEY_LOOKUP_SA(dst, proto, spi, sport, dport) \ 97 key_lookup_sa(dst, proto, spi, sport, dport, __func__, __LINE__) 98 99 int key_checktunnelsanity (struct secasvar *, u_int, void *, void *); 100 int key_checkrequest(const struct ipsecrequest *, const struct secasindex *, 101 struct secasvar **); 102 103 struct secpolicy *key_msg2sp (const struct sadb_x_policy *, size_t, int *); 104 struct mbuf *key_sp2msg(const struct secpolicy *, int); 105 int key_ismyaddr (const struct sockaddr *); 106 int key_spdacquire (const struct secpolicy *); 107 u_long key_random (void); 108 void key_randomfill (void *, size_t); 109 void key_freereg (struct socket *); 110 int key_parse (struct mbuf *, struct socket *); 111 void key_init (void); 112 void key_sa_recordxfer (struct secasvar *, struct mbuf *); 113 void key_sa_routechange (struct sockaddr *); 114 void key_update_used(void); 115 int key_get_used(void); 116 117 u_int16_t key_portfromsaddr (const union sockaddr_union *); 118 119 120 121 #ifdef MALLOC_DECLARE 122 MALLOC_DECLARE(M_SECA); 123 #endif /* MALLOC_DECLARE */ 124 125 #endif /* defined(_KERNEL) */ 126 #endif /* !_NETIPSEC_KEY_H_ */ 127