FreeBSD/Linux Kernel Cross Reference
sys/netkey/keydb.h
1 /* $FreeBSD: releng/5.3/sys/netkey/keydb.h 122062 2003-11-04 16:02:05Z ume $ */
2 /* $KAME: keydb.h,v 1.24 2003/09/07 15:12:10 itojun Exp $ */
3
4 /*
5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
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.
19 *
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
30 * SUCH DAMAGE.
31 */
32
33 #ifndef _NETKEY_KEYDB_H_
34 #define _NETKEY_KEYDB_H_
35
36 #ifdef _KERNEL
37
38 #include <netkey/key_var.h>
39
40 /* Security Assocciation Index */
41 /* NOTE: Ensure to be same address family */
42 struct secasindex {
43 struct sockaddr_storage src; /* srouce address for SA */
44 struct sockaddr_storage dst; /* destination address for SA */
45 u_int16_t proto; /* IPPROTO_ESP or IPPROTO_AH */
46 u_int8_t mode; /* mode of protocol, see ipsec.h */
47 u_int32_t reqid; /* reqid id who owned this SA */
48 /* see IPSEC_MANUAL_REQID_MAX. */
49 };
50
51 /* Security Association Data Base */
52 struct secashead {
53 LIST_ENTRY(secashead) chain;
54
55 struct secasindex saidx;
56
57 struct sadb_ident *idents; /* source identity */
58 struct sadb_ident *identd; /* destination identity */
59 /* XXX I don't know how to use them. */
60
61 u_int8_t state; /* MATURE or DEAD. */
62 LIST_HEAD(_satree, secasvar) savtree[SADB_SASTATE_MAX+1];
63 /* SA chain */
64 /* The first of this list is newer SA */
65
66 union {
67 struct route sau_route;
68 struct route_in6 sau_route6;
69 } sa_u;
70 #define sa_route sa_u.sau_route
71 };
72
73 /* Security Association */
74 struct secasvar {
75 TAILQ_ENTRY(secasvar) tailq;
76 LIST_ENTRY(secasvar) chain;
77 LIST_ENTRY(secasvar) spihash;
78
79 int refcnt; /* reference count */
80 u_int8_t state; /* Status of this Association */
81
82 u_int8_t alg_auth; /* Authentication Algorithm Identifier*/
83 u_int8_t alg_enc; /* Cipher Algorithm Identifier */
84 u_int32_t spi; /* SPI Value, network byte order */
85 u_int32_t flags; /* holder for SADB_KEY_FLAGS */
86
87 struct sadb_key *key_auth; /* Key for Authentication */
88 struct sadb_key *key_enc; /* Key for Encryption */
89 caddr_t iv; /* Initilization Vector */
90 u_int ivlen; /* length of IV */
91 void *sched; /* intermediate encryption key */
92 size_t schedlen;
93
94 struct secreplay *replay; /* replay prevention */
95 long created; /* for lifetime */
96
97 struct sadb_lifetime *lft_c; /* CURRENT lifetime, it's constant. */
98 struct sadb_lifetime *lft_h; /* HARD lifetime */
99 struct sadb_lifetime *lft_s; /* SOFT lifetime */
100
101 u_int64_t seq; /* sequence number */
102 pid_t pid; /* message's pid */
103
104 struct secashead *sah; /* back pointer to the secashead */
105
106 u_int32_t id; /* SA id */
107 };
108
109 /* replay prevention */
110 struct secreplay {
111 u_int64_t count;
112 u_int wsize; /* window size, i.g. 4 bytes */
113 u_int64_t seq; /* used by sender */
114 u_int64_t lastseq; /* used by receiver */
115 u_int8_t *bitmap; /* used by receiver */
116 int overflow; /* what round does the counter take. */
117 };
118
119 /* socket table due to send PF_KEY messages. */
120 struct secreg {
121 LIST_ENTRY(secreg) chain;
122
123 struct socket *so;
124 };
125
126 #ifndef IPSEC_NONBLOCK_ACQUIRE
127 /* acquiring list table. */
128 struct secacq {
129 LIST_ENTRY(secacq) chain;
130
131 struct secasindex saidx;
132
133 u_int32_t seq; /* sequence number */
134 long created; /* for lifetime */
135 int count; /* for lifetime */
136 };
137 #endif
138
139 /* Sensitivity Level Specification */
140 /* nothing */
141
142 #define SADB_KILL_INTERVAL 600 /* six seconds */
143
144 struct key_cb {
145 int key_count;
146 int any_count;
147 };
148
149 /* secpolicy */
150 struct secpolicy;
151 struct secpolicyindex;
152 extern struct secpolicy *keydb_newsecpolicy(void);
153 extern u_int32_t keydb_newspid(void);
154 extern void keydb_delsecpolicy(struct secpolicy *);
155 extern int keydb_setsecpolicyindex
156 (struct secpolicy *, struct secpolicyindex *);
157 /* secashead */
158 extern struct secashead *keydb_newsecashead(void);
159 extern void keydb_delsecashead(struct secashead *);
160 /* secasvar */
161 extern struct secasvar *keydb_newsecasvar(void);
162 extern void keydb_delsecasvar(struct secasvar *);
163 /* secreplay */
164 extern struct secreplay *keydb_newsecreplay(size_t);
165 extern void keydb_delsecreplay(struct secreplay *);
166 /* secreg */
167 extern struct secreg *keydb_newsecreg(void);
168 extern void keydb_delsecreg(struct secreg *);
169
170 #endif /* _KERNEL */
171
172 #endif /* _NETKEY_KEYDB_H_ */
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