2 /* $KAME: keydb.h,v 1.14 2000/08/02 17:58:26 sakane Exp $ */
5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the project nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 #ifndef _NETIPSEC_KEYDB_H_
34 #define _NETIPSEC_KEYDB_H_
38 #include <netipsec/key_var.h>
40 #ifndef _SOCKADDR_UNION_DEFINED
41 #define _SOCKADDR_UNION_DEFINED
43 * The union of all possible address formats we handle.
45 union sockaddr_union {
47 struct sockaddr_in sin;
48 struct sockaddr_in6 sin6;
50 #endif /* _SOCKADDR_UNION_DEFINED */
52 /* Security Assocciation Index */
53 /* NOTE: Ensure to be same address family */
55 union sockaddr_union src; /* source address for SA */
56 union sockaddr_union dst; /* destination address for SA */
57 u_int16_t proto; /* IPPROTO_ESP or IPPROTO_AH */
58 u_int8_t mode; /* mode of protocol, see ipsec.h */
59 u_int32_t reqid; /* reqid id who owned this SA */
60 /* see IPSEC_MANUAL_REQID_MAX. */
64 * In order to split out the keydb implementation from that of the
65 * PF_KEY sockets we need to define a few structures that while they
66 * may seem common are likely to diverge over time.
82 u_int32_t allocations;
88 /* Security Association Data Base */
90 LIST_ENTRY(secashead) chain;
92 struct secasindex saidx;
94 struct secident *idents; /* source identity */
95 struct secident *identd; /* destination identity */
96 /* XXX I don't know how to use them. */
98 u_int8_t state; /* MATURE or DEAD. */
99 LIST_HEAD(_satree, secasvar) savtree[SADB_SASTATE_MAX+1];
101 /* The first of this list is newer SA */
109 /* Security Association */
111 LIST_ENTRY(secasvar) chain;
112 struct mtx lock; /* update/access lock */
114 u_int refcnt; /* reference count */
115 u_int8_t state; /* Status of this Association */
117 u_int8_t alg_auth; /* Authentication Algorithm Identifier*/
118 u_int8_t alg_enc; /* Cipher Algorithm Identifier */
119 u_int8_t alg_comp; /* Compression Algorithm Identifier */
120 u_int32_t spi; /* SPI Value, network byte order */
121 u_int32_t flags; /* holder for SADB_KEY_FLAGS */
123 struct seckey *key_auth; /* Key for Authentication */
124 struct seckey *key_enc; /* Key for Encryption */
125 caddr_t iv; /* Initilization Vector */
126 u_int ivlen; /* length of IV */
127 void *sched; /* intermediate encryption key */
130 struct secreplay *replay; /* replay prevention */
131 time_t created; /* for lifetime */
133 struct seclifetime *lft_c; /* CURRENT lifetime, it's constant. */
134 struct seclifetime *lft_h; /* HARD lifetime */
135 struct seclifetime *lft_s; /* SOFT lifetime */
137 u_int32_t seq; /* sequence number */
138 pid_t pid; /* message's pid */
140 struct secashead *sah; /* back pointer to the secashead */
143 * NB: Fields with a tdb_ prefix are part of the "glue" used
144 * to interface to the OpenBSD crypto support. This was done
145 * to distinguish this code from the mainline KAME code.
147 struct xformsw *tdb_xform; /* transform */
148 struct enc_xform *tdb_encalgxform; /* encoding algorithm */
149 struct auth_hash *tdb_authalgxform; /* authentication algorithm */
150 struct comp_algo *tdb_compalgxform; /* compression algorithm */
151 u_int64_t tdb_cryptoid; /* crypto session id */
156 u_int16_t natt_type; /* IKE/ESP-marker in output. */
157 u_int16_t natt_esp_frag_len; /* MTU for payload fragmentation. */
160 #define SECASVAR_LOCK_INIT(_sav) \
161 mtx_init(&(_sav)->lock, "ipsec association", NULL, MTX_DEF)
162 #define SECASVAR_LOCK(_sav) mtx_lock(&(_sav)->lock)
163 #define SECASVAR_UNLOCK(_sav) mtx_unlock(&(_sav)->lock)
164 #define SECASVAR_LOCK_DESTROY(_sav) mtx_destroy(&(_sav)->lock)
165 #define SECASVAR_LOCK_ASSERT(_sav) mtx_assert(&(_sav)->lock, MA_OWNED)
167 /* replay prevention */
170 u_int wsize; /* window size, i.g. 4 bytes */
171 u_int32_t seq; /* used by sender */
172 u_int32_t lastseq; /* used by receiver */
173 caddr_t bitmap; /* used by receiver */
174 int overflow; /* overflow flag */
177 /* socket table due to send PF_KEY messages. */
179 LIST_ENTRY(secreg) chain;
184 /* acquiring list table. */
186 LIST_ENTRY(secacq) chain;
188 struct secasindex saidx;
190 u_int32_t seq; /* sequence number */
191 time_t created; /* for lifetime */
192 int count; /* for lifetime */
195 /* Sensitivity Level Specification */
198 #define SADB_KILL_INTERVAL 600 /* six seconds */
201 extern struct secpolicy *keydb_newsecpolicy(void);
202 extern void keydb_delsecpolicy(struct secpolicy *);
204 extern struct secashead *keydb_newsecashead(void);
205 extern void keydb_delsecashead(struct secashead *);
207 extern struct secasvar *keydb_newsecasvar(void);
208 extern void keydb_refsecasvar(struct secasvar *);
209 extern void keydb_freesecasvar(struct secasvar *);
211 extern struct secreplay *keydb_newsecreplay(size_t);
212 extern void keydb_delsecreplay(struct secreplay *);
214 extern struct secreg *keydb_newsecreg(void);
215 extern void keydb_delsecreg(struct secreg *);
219 #endif /* _NETIPSEC_KEYDB_H_ */