1/* $NetBSD: key.h,v 1.14 2015/03/30 03:51:50 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
39struct secpolicy;
40struct secpolicyindex;
41struct ipsecrequest;
42struct secasvar;
43struct sockaddr;
44struct socket;
45struct sadb_msg;
46struct sadb_x_policy;
47struct secasindex;
48union sockaddr_union;
49
50int key_havesp(u_int dir);
51struct secpolicy *key_allocsp(const struct secpolicyindex *, u_int,
52 const char*, int);
53struct secpolicy *key_allocsp2(u_int32_t spi, const union sockaddr_union *dst,
54 u_int8_t proto, u_int dir, const char*, int);
55struct secpolicy *key_newsp(const char*, int);
56struct secpolicy *key_gettunnel(const struct sockaddr *,
57 const struct sockaddr *, const struct sockaddr *,
58 const struct sockaddr *, const char*, int);
59/* NB: prepend with _ for KAME IPv6 compatbility */
60void _key_freesp(struct secpolicy **, const char*, int);
61
62/*
63 * Access to the SADB are interlocked with splsoftnet. In particular,
64 * holders of SA's use this to block accesses by protocol processing
65 * that can happen either by network swi's or by continuations that
66 * occur on crypto callbacks. Much of this could go away if
67 * key_checkrequest were redone.
68 */
69#define KEY_ALLOCSP(spidx, dir) \
70 key_allocsp(spidx, dir, __FILE__, __LINE__)
71#define KEY_ALLOCSP2(spi, dst, proto, dir) \
72 key_allocsp2(spi, dst, proto, dir, __FILE__, __LINE__)
73#define KEY_NEWSP() \
74 key_newsp(__FILE__, __LINE__)
75#define KEY_GETTUNNEL(osrc, odst, isrc, idst) \
76 key_gettunnel(osrc, odst, isrc, idst, __FILE__, __LINE__)
77#define KEY_FREESP(spp) \
78 _key_freesp(spp, __FILE__, __LINE__)
79
80struct secasvar *key_allocsa(const union sockaddr_union *,
81 u_int, u_int32_t, u_int16_t, u_int16_t, const char*, int);
82void key_freesav(struct secasvar **, const char*, int);
83
84#define KEY_ALLOCSA(dst, proto, spi, sport, dport) \
85 key_allocsa(dst, proto, spi, sport, dport, __FILE__, __LINE__)
86#define KEY_FREESAV(psav) \
87 key_freesav(psav, __FILE__, __LINE__)
88
89void key_freeso (struct socket *);
90int key_checktunnelsanity (struct secasvar *, u_int, void *, void *);
91int key_checkrequest (struct ipsecrequest *isr, const struct secasindex *);
92
93struct secpolicy *key_msg2sp (const struct sadb_x_policy *, size_t, int *);
94struct mbuf *key_sp2msg (const struct secpolicy *);
95int key_ismyaddr (const struct sockaddr *);
96int key_cmpspidx_exactly (const struct secpolicyindex *, const struct secpolicyindex *);
97int key_cmpspidx_withmask (const struct secpolicyindex *, const struct secpolicyindex *);
98int key_spdacquire (const struct secpolicy *);
99void key_timehandler (void*);
100u_long key_random (void);
101void key_randomfill (void *, size_t);
102void key_freereg (struct socket *);
103int key_parse (struct mbuf *, struct socket *);
104void key_init (void);
105void key_sa_recordxfer (struct secasvar *, struct mbuf *);
106void key_sa_routechange (struct sockaddr *);
107void key_update_used(void);
108int key_get_used(void);
109
110u_int16_t key_portfromsaddr (const union sockaddr_union *);
111
112
113
114#ifdef MALLOC_DECLARE
115MALLOC_DECLARE(M_SECA);
116#endif /* MALLOC_DECLARE */
117
118#endif /* defined(_KERNEL) */
119#endif /* !_NETIPSEC_KEY_H_ */
120