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keydb.h (302408) keydb.h (315514)
1/* $FreeBSD: stable/11/sys/netipsec/keydb.h 286292 2015-08-04 17:47:11Z jmg $ */
1/* $FreeBSD: stable/11/sys/netipsec/keydb.h 315514 2017-03-18 22:04:20Z ae $ */
2/* $KAME: keydb.h,v 1.14 2000/08/02 17:58:26 sakane 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

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29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33#ifndef _NETIPSEC_KEYDB_H_
34#define _NETIPSEC_KEYDB_H_
35
36#ifdef _KERNEL
2/* $KAME: keydb.h,v 1.14 2000/08/02 17:58:26 sakane 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

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29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33#ifndef _NETIPSEC_KEYDB_H_
34#define _NETIPSEC_KEYDB_H_
35
36#ifdef _KERNEL
37#include <sys/counter.h>
38#include <sys/lock.h>
39#include <sys/mutex.h>
37
38#include <netipsec/key_var.h>
39
40#ifndef _SOCKADDR_UNION_DEFINED
41#define _SOCKADDR_UNION_DEFINED
42/*
43 * The union of all possible address formats we handle.
44 */

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49};
50#endif /* _SOCKADDR_UNION_DEFINED */
51
52/* Security Assocciation Index */
53/* NOTE: Ensure to be same address family */
54struct secasindex {
55 union sockaddr_union src; /* source address for SA */
56 union sockaddr_union dst; /* destination address for SA */
40
41#include <netipsec/key_var.h>
42
43#ifndef _SOCKADDR_UNION_DEFINED
44#define _SOCKADDR_UNION_DEFINED
45/*
46 * The union of all possible address formats we handle.
47 */

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52};
53#endif /* _SOCKADDR_UNION_DEFINED */
54
55/* Security Assocciation Index */
56/* NOTE: Ensure to be same address family */
57struct secasindex {
58 union sockaddr_union src; /* source address for SA */
59 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 uint8_t proto; /* IPPROTO_ESP or IPPROTO_AH */
61 uint8_t mode; /* mode of protocol, see ipsec.h */
62 uint32_t reqid; /* reqid id who owned this SA */
60 /* see IPSEC_MANUAL_REQID_MAX. */
61};
62
63/*
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.
67 */

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80
81struct seclifetime {
82 u_int32_t allocations;
83 u_int64_t bytes;
84 u_int64_t addtime;
85 u_int64_t usetime;
86};
87
63 /* see IPSEC_MANUAL_REQID_MAX. */
64};
65
66/*
67 * In order to split out the keydb implementation from that of the
68 * PF_KEY sockets we need to define a few structures that while they
69 * may seem common are likely to diverge over time.
70 */

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83
84struct seclifetime {
85 u_int32_t allocations;
86 u_int64_t bytes;
87 u_int64_t addtime;
88 u_int64_t usetime;
89};
90
91struct secnatt {
92 union sockaddr_union oai; /* original addresses of initiator */
93 union sockaddr_union oar; /* original address of responder */
94 uint16_t sport; /* source port */
95 uint16_t dport; /* destination port */
96 uint16_t cksum; /* checksum delta */
97 uint16_t flags;
98#define IPSEC_NATT_F_OAI 0x0001
99#define IPSEC_NATT_F_OAR 0x0002
100};
101
88/* Security Association Data Base */
102/* Security Association Data Base */
103TAILQ_HEAD(secasvar_queue, secasvar);
89struct secashead {
104struct secashead {
90 LIST_ENTRY(secashead) chain;
105 TAILQ_ENTRY(secashead) chain;
106 LIST_ENTRY(secashead) addrhash; /* hash by sproto+src+dst addresses */
107 LIST_ENTRY(secashead) drainq; /* used ONLY by flush callout */
91
92 struct secasindex saidx;
93
94 struct secident *idents; /* source identity */
95 struct secident *identd; /* destination identity */
96 /* XXX I don't know how to use them. */
97
108
109 struct secasindex saidx;
110
111 struct secident *idents; /* source identity */
112 struct secident *identd; /* destination identity */
113 /* XXX I don't know how to use them. */
114
98 u_int8_t state; /* MATURE or DEAD. */
99 LIST_HEAD(_satree, secasvar) savtree[SADB_SASTATE_MAX+1];
100 /* SA chain */
101 /* The first of this list is newer SA */
115 volatile u_int refcnt; /* reference count */
116 uint8_t state; /* MATURE or DEAD. */
117 struct secasvar_queue savtree_alive; /* MATURE and DYING SA */
118 struct secasvar_queue savtree_larval; /* LARVAL SA */
102};
103
104struct xformsw;
105struct enc_xform;
106struct auth_hash;
107struct comp_algo;
108
119};
120
121struct xformsw;
122struct enc_xform;
123struct auth_hash;
124struct comp_algo;
125
109/* Security Association */
126/*
127 * Security Association
128 *
129 * For INBOUND packets we do SA lookup using SPI, thus only SPIHASH is used.
130 * For OUTBOUND packets there may be several SA suitable for packet.
131 * We use key_preferred_oldsa variable to choose better SA. First of we do
132 * lookup for suitable SAH using packet's saidx. Then we use SAH's savtree
133 * to search better candidate. The newer SA (by created time) are placed
134 * in the beginning of the savtree list. There is no preference between
135 * DYING and MATURE.
136 *
137 * NB: Fields with a tdb_ prefix are part of the "glue" used
138 * to interface to the OpenBSD crypto support. This was done
139 * to distinguish this code from the mainline KAME code.
140 * NB: Fields are sorted on the basis of the frequency of changes, i.e.
141 * constants and unchangeable fields are going first.
142 * NB: if you want to change this structure, check that this will not break
143 * key_updateaddresses().
144 */
110struct secasvar {
145struct secasvar {
111 LIST_ENTRY(secasvar) chain;
112 struct mtx lock; /* update/access lock */
146 uint32_t spi; /* SPI Value, network byte order */
147 uint32_t flags; /* holder for SADB_KEY_FLAGS */
148 uint32_t seq; /* sequence number */
149 pid_t pid; /* message's pid */
150 u_int ivlen; /* length of IV */
113
151
114 u_int refcnt; /* reference count */
115 u_int8_t state; /* Status of this Association */
116
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 */
122
152 struct secashead *sah; /* back pointer to the secashead */
123 struct seckey *key_auth; /* Key for Authentication */
124 struct seckey *key_enc; /* Key for Encryption */
153 struct seckey *key_auth; /* Key for Authentication */
154 struct seckey *key_enc; /* Key for Encryption */
125 u_int ivlen; /* length of IV */
126 void *sched; /* intermediate encryption key */
127 size_t schedlen;
128 uint64_t cntr; /* counter for GCM and CTR */
129
130 struct secreplay *replay; /* replay prevention */
155 struct secreplay *replay; /* replay prevention */
131 time_t created; /* for lifetime */
156 struct secnatt *natt; /* NAT-T config */
157 struct mtx *lock; /* update/access lock */
132
158
133 struct seclifetime *lft_c; /* CURRENT lifetime, it's constant. */
159 const struct xformsw *tdb_xform; /* transform */
160 const struct enc_xform *tdb_encalgxform;/* encoding algorithm */
161 const struct auth_hash *tdb_authalgxform;/* authentication algorithm */
162 const struct comp_algo *tdb_compalgxform;/* compression algorithm */
163 uint64_t tdb_cryptoid; /* crypto session id */
164
165 uint8_t alg_auth; /* Authentication Algorithm Identifier*/
166 uint8_t alg_enc; /* Cipher Algorithm Identifier */
167 uint8_t alg_comp; /* Compression Algorithm Identifier */
168 uint8_t state; /* Status of this SA (pfkeyv2.h) */
169
170 counter_u64_t lft_c; /* CURRENT lifetime */
171#define lft_c_allocations lft_c
172#define lft_c_bytes lft_c + 1
134 struct seclifetime *lft_h; /* HARD lifetime */
135 struct seclifetime *lft_s; /* SOFT lifetime */
136
173 struct seclifetime *lft_h; /* HARD lifetime */
174 struct seclifetime *lft_s; /* SOFT lifetime */
175
137 u_int32_t seq; /* sequence number */
138 pid_t pid; /* message's pid */
176 uint64_t created; /* time when SA was created */
177 uint64_t firstused; /* time when SA was first used */
139
178
140 struct secashead *sah; /* back pointer to the secashead */
179 TAILQ_ENTRY(secasvar) chain;
180 LIST_ENTRY(secasvar) spihash;
181 LIST_ENTRY(secasvar) drainq; /* used ONLY by flush callout */
141
182
142 /*
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.
146 */
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 */
152
153 /*
154 * NAT-Traversal.
155 */
156 u_int16_t natt_type; /* IKE/ESP-marker in output. */
157 u_int16_t natt_esp_frag_len; /* MTU for payload fragmentation. */
183 uint64_t cntr; /* counter for GCM and CTR */
184 volatile u_int refcnt; /* reference count */
158};
159
185};
186
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)
187#define SECASVAR_LOCK(_sav) mtx_lock((_sav)->lock)
188#define SECASVAR_UNLOCK(_sav) mtx_unlock((_sav)->lock)
189#define SECASVAR_LOCK_ASSERT(_sav) mtx_assert((_sav)->lock, MA_OWNED)
166#define SAV_ISGCM(_sav) \
167 ((_sav)->alg_enc == SADB_X_EALG_AESGCM8 || \
168 (_sav)->alg_enc == SADB_X_EALG_AESGCM12 || \
169 (_sav)->alg_enc == SADB_X_EALG_AESGCM16)
170#define SAV_ISCTR(_sav) ((_sav)->alg_enc == SADB_X_EALG_AESCTR)
171#define SAV_ISCTRORGCM(_sav) (SAV_ISCTR((_sav)) || SAV_ISGCM((_sav)))
172
190#define SAV_ISGCM(_sav) \
191 ((_sav)->alg_enc == SADB_X_EALG_AESGCM8 || \
192 (_sav)->alg_enc == SADB_X_EALG_AESGCM12 || \
193 (_sav)->alg_enc == SADB_X_EALG_AESGCM16)
194#define SAV_ISCTR(_sav) ((_sav)->alg_enc == SADB_X_EALG_AESCTR)
195#define SAV_ISCTRORGCM(_sav) (SAV_ISCTR((_sav)) || SAV_ISGCM((_sav)))
196
173/* replay prevention */
197/* Replay prevention, protected by SECASVAR_LOCK:
198 * (m) locked by mtx
199 * (c) read only except during creation / free
200 */
174struct secreplay {
201struct secreplay {
175 u_int32_t count;
176 u_int wsize; /* window size, i.g. 4 bytes */
177 u_int32_t seq; /* used by sender */
178 u_int32_t lastseq; /* used by receiver */
179 caddr_t bitmap; /* used by receiver */
180 int overflow; /* overflow flag */
202 u_int32_t count; /* (m) */
203 u_int wsize; /* (c) window size, i.g. 4 bytes */
204 u_int32_t seq; /* (m) used by sender */
205 u_int32_t lastseq; /* (m) used by receiver */
206 u_int32_t *bitmap; /* (m) used by receiver */
207 u_int bitmap_size; /* (c) size of the bitmap array */
208 int overflow; /* (m) overflow flag */
181};
182
183/* socket table due to send PF_KEY messages. */
184struct secreg {
185 LIST_ENTRY(secreg) chain;
186
187 struct socket *so;
188};
189
190/* acquiring list table. */
191struct secacq {
192 LIST_ENTRY(secacq) chain;
209};
210
211/* socket table due to send PF_KEY messages. */
212struct secreg {
213 LIST_ENTRY(secreg) chain;
214
215 struct socket *so;
216};
217
218/* acquiring list table. */
219struct secacq {
220 LIST_ENTRY(secacq) chain;
221 LIST_ENTRY(secacq) addrhash;
222 LIST_ENTRY(secacq) seqhash;
193
194 struct secasindex saidx;
223
224 struct secasindex saidx;
195
196 u_int32_t seq; /* sequence number */
225 uint32_t seq; /* sequence number */
197 time_t created; /* for lifetime */
198 int count; /* for lifetime */
199};
200
201/* Sensitivity Level Specification */
202/* nothing */
203
204#define SADB_KILL_INTERVAL 600 /* six seconds */

--- 21 unchanged lines hidden --- 		226 time_t created; /* for lifetime */
227 int count; /* for lifetime */
228};
229
230/* Sensitivity Level Specification */
231/* nothing */
232
233#define SADB_KILL_INTERVAL 600 /* six seconds */

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