FreeBSD/Linux Kernel Cross Reference
sys/netkey/keydb.h
1 /* $NetBSD: keydb.h,v 1.26 2005/12/11 00:02:28 elad Exp $ */
2 /* $KAME: keydb.h,v 1.23 2003/09/07 05:25:20 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 #if defined(_KERNEL_OPT)
39 #include "opt_ipsec.h"
40 #endif
41
42 #include <sys/mallocvar.h>
43 #include <netkey/key_var.h>
44
45 MALLOC_DECLARE(M_SECA);
46
47 /* Security Assocciation Index */
48 /* NOTE: Ensure to be same address family */
49 struct secasindex {
50 struct sockaddr_storage src; /* srouce address for SA */
51 struct sockaddr_storage dst; /* destination address for SA */
52 u_int16_t proto; /* IPPROTO_ESP or IPPROTO_AH */
53 u_int8_t mode; /* mode of protocol, see ipsec.h */
54 u_int16_t reqid; /* reqid id who owned this SA */
55 /* see IPSEC_MANUAL_REQID_MAX. */
56 };
57
58 /* Security Association Data Base */
59 struct secashead {
60 LIST_ENTRY(secashead) chain;
61
62 struct secasindex saidx;
63
64 struct sadb_ident *idents; /* source identity */
65 struct sadb_ident *identd; /* destination identity */
66 /* XXX I don't know how to use them. */
67
68 u_int8_t state; /* MATURE or DEAD. */
69 LIST_HEAD(_satree, secasvar) savtree[SADB_SASTATE_MAX+1];
70 /* SA chain */
71 /* The first of this list is newer SA */
72
73 union {
74 struct route sau_route;
75 struct route_in6 sau_route6;
76 } sa_u;
77 #define sa_route sa_u.sau_route
78 };
79
80 /* Security Association */
81 struct secasvar {
82 TAILQ_ENTRY(secasvar) tailq;
83 LIST_ENTRY(secasvar) chain;
84 LIST_ENTRY(secasvar) spihash;
85
86 int refcnt; /* reference count */
87 u_int8_t state; /* Status of this Association */
88
89 u_int8_t alg_auth; /* Authentication Algorithm Identifier*/
90 u_int8_t alg_enc; /* Cipher Algorithm Identifier */
91 u_int32_t spi; /* SPI Value, network byte order */
92 u_int32_t flags; /* holder for SADB_KEY_FLAGS */
93
94 struct sadb_key *key_auth; /* Key for Authentication */
95 struct sadb_key *key_enc; /* Key for Encryption */
96 caddr_t iv; /* Initilization Vector */
97 u_int ivlen; /* length of IV */
98 void *sched; /* intermediate encryption key */
99 size_t schedlen;
100
101 struct secreplay *replay; /* replay prevention */
102 long created; /* for lifetime */
103
104 struct sadb_lifetime *lft_c; /* CURRENT lifetime, it's constant. */
105 struct sadb_lifetime *lft_h; /* HARD lifetime */
106 struct sadb_lifetime *lft_s; /* SOFT lifetime */
107
108 u_int64_t seq; /* sequence number */
109 pid_t pid; /* message's pid */
110
111 struct secashead *sah; /* back pointer to the secashead */
112
113 u_int32_t id; /* SA id */
114 /* Nat-Traversal state */
115 #ifdef IPSEC_NAT_T
116 u_int16_t natt_type;
117 u_int16_t esp_frag;
118 #endif
119 };
120
121 /* replay prevention */
122 struct secreplay {
123 u_int64_t count;
124 u_int wsize; /* window size, i.g. 4 bytes */
125 u_int64_t seq; /* used by sender */
126 u_int64_t lastseq; /* used by receiver */
127 u_int8_t *bitmap; /* used by receiver */
128 int overflow; /* what round does the counter take. */
129 };
130
131 /* socket table due to send PF_KEY messages. */
132 struct secreg {
133 LIST_ENTRY(secreg) chain;
134
135 struct socket *so;
136 };
137
138 #ifndef IPSEC_NONBLOCK_ACQUIRE
139 /* acquiring list table. */
140 struct secacq {
141 LIST_ENTRY(secacq) chain;
142
143 struct secasindex saidx;
144
145 u_int32_t seq; /* sequence number */
146 long created; /* for lifetime */
147 int count; /* for lifetime */
148 };
149 #endif
150
151 /* Sensitivity Level Specification */
152 /* nothing */
153
154 #define SADB_KILL_INTERVAL 600 /* six seconds */
155
156 struct key_cb {
157 int key_count;
158 int any_count;
159 };
160
161 /* secpolicy */
162 struct secpolicy;
163 struct secpolicyindex;
164 extern struct secpolicy *keydb_newsecpolicy __P((void));
165 extern u_int32_t keydb_newspid __P((void));
166 extern void keydb_delsecpolicy __P((struct secpolicy *));
167 extern int keydb_setsecpolicyindex
168 __P((struct secpolicy *, struct secpolicyindex *));
169 /* secashead */
170 extern struct secashead *keydb_newsecashead __P((void));
171 extern void keydb_delsecashead __P((struct secashead *));
172 /* secasvar */
173 extern struct secasvar *keydb_newsecasvar __P((void));
174 extern void keydb_delsecasvar __P((struct secasvar *));
175 /* secreplay */
176 extern struct secreplay *keydb_newsecreplay __P((size_t));
177 extern void keydb_delsecreplay __P((struct secreplay *));
178 /* secreg */
179 extern struct secreg *keydb_newsecreg __P((void));
180 extern void keydb_delsecreg __P((struct secreg *));
181
182 #endif /* _KERNEL */
183
184 #endif /* !_NETKEY_KEYDB_H_ */
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