1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
|
/* $OpenBSD: ip_ipsp.h,v 1.74 2000/10/14 06:23:52 angelos Exp $ */
/*
* The authors of this code are John Ioannidis (ji@tla.org),
* Angelos D. Keromytis (kermit@csd.uch.gr),
* Niels Provos (provos@physnet.uni-hamburg.de) and
* Niklas Hallqvist (niklas@appli.se).
*
* The original version of this code was written by John Ioannidis
* for BSD/OS in Athens, Greece, in November 1995.
*
* Ported to OpenBSD and NetBSD, with additional transforms, in December 1996,
* by Angelos D. Keromytis.
*
* Additional transforms and features in 1997 and 1998 by Angelos D. Keromytis
* and Niels Provos.
*
* Additional features in 1999 by Angelos D. Keromytis and Niklas Hallqvist.
*
* Copyright (c) 1995, 1996, 1997, 1998, 1999 by John Ioannidis,
* Angelos D. Keromytis and Niels Provos.
* Copyright (c) 1999 Niklas Hallqvist.
*
* Permission to use, copy, and modify this software without fee
* is hereby granted, provided that this entire notice is included in
* all copies of any software which is or includes a copy or
* modification of this software.
* You may use this code under the GNU public license if you so wish. Please
* contribute changes back to the authors under this freer than GPL license
* so that we may further the use of strong encryption without limitations to
* all.
*
* THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY
* REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE
* MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
* PURPOSE.
*/
#ifndef _NETINET_IPSP_H_
#define _NETINET_IPSP_H_
/*
* IPSP global definitions.
*/
#include <sys/types.h>
#include <sys/queue.h>
#include <netinet/in.h>
union sockaddr_union
{
struct sockaddr sa;
struct sockaddr_in sin;
struct sockaddr_in6 sin6;
};
/* HMAC key sizes */
#define MD5HMAC96_KEYSIZE 16
#define SHA1HMAC96_KEYSIZE 20
#define RIPEMD160HMAC96_KEYSIZE 20
#define AH_HMAC_HASHLEN 12 /* 96 bits of authenticator */
#define AH_HMAC_RPLENGTH 4 /* 32 bits of replay counter */
#define AH_HMAC_INITIAL_RPL 1 /* Replay counter initial value */
/* Authenticator lengths */
#define AH_MD5_ALEN 16
#define AH_SHA1_ALEN 20
#define AH_RMD160_ALEN 20
#define AH_ALEN_MAX 20 /* Keep updated */
/* Reserved SPI numbers */
#define SPI_LOCAL_USE 0
#define SPI_RESERVED_MIN 1
#define SPI_RESERVED_MAX 255
/* sysctl default values */
#define IPSEC_DEFAULT_EMBRYONIC_SA_TIMEOUT 60 /* 1 minute */
#define IPSEC_DEFAULT_PFS 1
#define IPSEC_DEFAULT_SOFT_ALLOCATIONS 0
#define IPSEC_DEFAULT_EXP_ALLOCATIONS 0
#define IPSEC_DEFAULT_SOFT_BYTES 0
#define IPSEC_DEFAULT_EXP_BYTES 0
#define IPSEC_DEFAULT_SOFT_TIMEOUT 80000
#define IPSEC_DEFAULT_EXP_TIMEOUT 86400
#define IPSEC_DEFAULT_SOFT_FIRST_USE 3600
#define IPSEC_DEFAULT_EXP_FIRST_USE 7200
#define IPSEC_DEFAULT_DEF_ENC "aes"
#define IPSEC_DEFAULT_DEF_AUTH "hmac-sha1"
#define IPSEC_DEFAULT_EXPIRE_ACQUIRE 30
struct sockaddr_encap
{
u_int8_t sen_len; /* length */
u_int8_t sen_family; /* PF_KEY */
u_int16_t sen_type; /* see SENT_* */
union
{
struct /* SENT_IP4 */
{
u_int8_t Direction;
struct in_addr Src;
struct in_addr Dst;
u_int8_t Proto;
u_int16_t Sport;
u_int16_t Dport;
} Sip4;
struct /* SENT_IP6 */
{
u_int8_t Direction;
struct in6_addr Src;
struct in6_addr Dst;
u_int8_t Proto;
u_int16_t Sport;
u_int16_t Dport;
} Sip6;
struct ipsec_policy *PolicyHead; /* SENT_IPSP */
} Sen;
};
#define IPSP_DIRECTION_IN 0x1
#define IPSP_DIRECTION_OUT 0x2
#define sen_data Sen.Data
#define sen_ip_src Sen.Sip4.Src
#define sen_ip_dst Sen.Sip4.Dst
#define sen_proto Sen.Sip4.Proto
#define sen_sport Sen.Sip4.Sport
#define sen_dport Sen.Sip4.Dport
#define sen_direction Sen.Sip4.Direction
#define sen_ip6_src Sen.Sip6.Src
#define sen_ip6_dst Sen.Sip6.Dst
#define sen_ip6_proto Sen.Sip6.Proto
#define sen_ip6_sport Sen.Sip6.Sport
#define sen_ip6_dport Sen.Sip6.Dport
#define sen_ip6_direction Sen.Sip6.Direction
#define sen_ipsp Sen.PolicyHead
/*
* The "type" is really part of the address as far as the routing
* system is concerned. By using only one bit in the type field
* for each type, we sort-of make sure that different types of
* encapsulation addresses won't be matched against the wrong type.
*
*/
#define SENT_IP4 0x0001 /* data is two struct in_addr */
#define SENT_IPSP 0x0002 /* data as in IP4/6 plus SPI */
#define SENT_IP6 0x0004
#define SENT_LEN sizeof(struct sockaddr_encap)
struct ipsec_acquire
{
union sockaddr_union ipa_addr;
u_int64_t ipa_expire;
u_int32_t ipa_seq;
struct sockaddr_encap ipa_info;
struct sockaddr_encap ipa_mask;
TAILQ_ENTRY(ipsec_acquire) ipa_next;
};
struct ipsec_policy
{
struct sockaddr_encap ipo_addr;
struct sockaddr_encap ipo_mask;
union sockaddr_union ipo_src; /* Local address to use */
union sockaddr_union ipo_dst; /* Remote gateway -- if it's zeroed:
* - on output, we try to contact the
* remote host directly (if needed).
* - on input, we accept on if the
* inner source is the same as the
* outer source address, or if transport
* mode was used.
*/
u_int64_t ipo_last_searched; /* Timestamp of last lookup */
u_int8_t ipo_flags; /* See IPSP_POLICY_* definitions */
u_int8_t ipo_type; /* USE/ACQUIRE/... */
u_int8_t ipo_sproto;/* ESP, AH; if zero we use system dflts */
struct tdb *ipo_tdb; /* Cached entry */
u_int16_t ipo_srcid_len;
u_int16_t ipo_dstid_len;
u_int16_t ipo_srcid_type;
u_int16_t ipo_dstid_type;
u_int8_t *ipo_srcid;
u_int8_t *ipo_dstid;
TAILQ_ENTRY(ipsec_policy) ipo_tdb_next; /* List of policies on TDB */
TAILQ_ENTRY(ipsec_policy) ipo_list; /* List of all policy entries */
};
#define IPSP_POLICY_NONE 0x0000 /* No flags set */
#define IPSP_IPSEC_USE 0 /* Use if existing, don't bother establishing */
#define IPSP_IPSEC_ACQUIRE 1 /* Try to acquire in parallel but let packet */
#define IPSP_IPSEC_REQUIRE 2 /* Require SA */
#define IPSP_PERMIT 3 /* Permit traffic through */
#define IPSP_DENY 4 /* Deny traffic */
#define IPSP_IPSEC_DONTACQ 5 /* Require, but don't acquire */
/* Notification types */
#define NOTIFY_SOFT_EXPIRE 0 /* Soft expiration of SA */
#define NOTIFY_HARD_EXPIRE 1 /* Hard expiration of SA */
#define NOTIFY_REQUEST_SA 2 /* Establish an SA */
#define NOTIFY_SATYPE_CONF 1 /* SA should do encryption */
#define NOTIFY_SATYPE_AUTH 2 /* SA should do authentication */
#define NOTIFY_SATYPE_TUNNEL 4 /* SA should use tunneling */
/*
* For encapsulation routes are possible not only for the destination
* address but also for the protocol, source and destination ports
* if available
*/
struct route_enc {
struct rtentry *re_rt;
struct sockaddr_encap re_dst;
};
struct tdb /* tunnel descriptor block */
{
/*
* Each TDB is on three hash tables: one keyed on dst/spi/sproto,
* one keyed on dst/sproto, and one keyed on src/sproto. The first
* is used for finding a specific TDB, the second for finding TDBs
* TDBs for outgoing policy matching, and the third for incoming
* policy matching. The following three fields maintain the hash
* queues in those three tables.
*/
struct tdb *tdb_hnext; /* dst/spi/sproto table */
struct tdb *tdb_anext; /* dst/sproto table */
struct tdb *tdb_snext; /* src/sproto table */
struct tdb *tdb_inext;
struct tdb *tdb_onext;
struct xformsw *tdb_xform; /* Transformation to use */
struct enc_xform *tdb_encalgxform; /* Encryption algorithm xform */
struct auth_hash *tdb_authalgxform; /* Authentication algorithm xform */
#define TDBF_UNIQUE 0x00001 /* This should not be used by others */
#define TDBF_TIMER 0x00002 /* Absolute expiration timer in use */
#define TDBF_BYTES 0x00004 /* Check the byte counters */
#define TDBF_ALLOCATIONS 0x00008 /* Check the flows counters */
#define TDBF_INVALID 0x00010 /* This SPI is not valid yet/anymore */
#define TDBF_FIRSTUSE 0x00020 /* Expire after first use */
#define TDBF_HALFIV 0x00040 /* Use half-length IV (ESP old only) */
#define TDBF_SOFT_TIMER 0x00080 /* Soft expiration */
#define TDBF_SOFT_BYTES 0x00100 /* Soft expiration */
#define TDBF_SOFT_ALLOCATIONS 0x00200 /* Soft expiration */
#define TDBF_SOFT_FIRSTUSE 0x00400 /* Soft expiration */
#define TDBF_PFS 0x00800 /* Ask for PFS from Key Mgmt. */
#define TDBF_TUNNELING 0x01000 /* Force IP-IP encapsulation */
#define TDBF_NOREPLAY 0x02000 /* No replay counter present */
#define TDBF_RANDOMPADDING 0x04000 /* Random data in the ESP padding */
u_int32_t tdb_flags; /* Flags related to this TDB */
TAILQ_ENTRY(tdb) tdb_expnext; /* Expiration cluster list link */
TAILQ_ENTRY(tdb) tdb_explink; /* Expiration ordered list link */
u_int32_t tdb_exp_allocations; /* Expire after so many flows */
u_int32_t tdb_soft_allocations; /* Expiration warning */
u_int32_t tdb_cur_allocations; /* Total number of allocations */
u_int64_t tdb_exp_bytes; /* Expire after so many bytes passed */
u_int64_t tdb_soft_bytes; /* Expiration warning */
u_int64_t tdb_cur_bytes; /* Current count of bytes */
u_int64_t tdb_exp_timeout; /* When does the SPI expire */
u_int64_t tdb_soft_timeout; /* Send a soft-expire warning */
u_int64_t tdb_established; /* When was the SPI established */
u_int64_t tdb_timeout; /* Next absolute expiration time. */
u_int64_t tdb_first_use; /* When was it first used */
u_int64_t tdb_soft_first_use; /* Soft warning */
u_int64_t tdb_exp_first_use; /* Expire if tdb_first_use +
* tdb_exp_first_use <= curtime */
u_int64_t tdb_cryptoid; /* Crypto session ID */
u_int32_t tdb_spi; /* SPI */
u_int16_t tdb_amxkeylen; /* Raw authentication key length */
u_int16_t tdb_emxkeylen; /* Raw encryption key length */
u_int16_t tdb_ivlen; /* IV length */
u_int8_t tdb_sproto; /* IPsec protocol */
u_int8_t tdb_wnd; /* Replay window */
u_int8_t tdb_satype; /* SA type (RFC2367, PF_KEY) */
union sockaddr_union tdb_dst; /* Destination address for this SA */
union sockaddr_union tdb_src; /* Source address for this SA */
union sockaddr_union tdb_proxy;
u_int8_t *tdb_srcid; /* Source ID for this SA */
u_int8_t *tdb_dstid; /* Destination ID for this SA */
u_int8_t *tdb_amxkey; /* Raw authentication key */
u_int8_t *tdb_emxkey; /* Raw encryption key */
u_int32_t tdb_rpl; /* Replay counter */
u_int32_t tdb_bitmap; /* Used for replay sliding window */
u_int32_t tdb_initial; /* Initial replay value */
u_int32_t tdb_epoch; /* Used by the kernfs interface */
u_int16_t tdb_srcid_len;
u_int16_t tdb_dstid_len;
u_int16_t tdb_srcid_type;
u_int16_t tdb_dstid_type;
u_int8_t tdb_iv[4]; /* Used for HALF-IV ESP */
caddr_t tdb_interface;
TAILQ_HEAD(tdb_inp_head, inpcb) tdb_inp;
TAILQ_HEAD(tdb_policy_head, ipsec_policy) tdb_policy_head;
};
struct tdb_ident {
u_int32_t spi;
union sockaddr_union dst;
u_int8_t proto;
};
struct tdb_crypto {
u_int32_t tc_spi;
union sockaddr_union tc_dst;
u_int8_t tc_proto;
int tc_protoff;
int tc_skip;
caddr_t tc_ptr;
};
struct ipsecinit
{
u_int8_t *ii_enckey;
u_int8_t *ii_authkey;
u_int16_t ii_enckeylen;
u_int16_t ii_authkeylen;
u_int8_t ii_encalg;
u_int8_t ii_authalg;
};
struct xformsw
{
u_short xf_type; /* Unique ID of xform */
u_short xf_flags; /* flags (see below) */
char *xf_name; /* human-readable name */
int (*xf_attach)(void); /* called at config time */
int (*xf_init)(struct tdb *, struct xformsw *, struct ipsecinit *);
int (*xf_zeroize)(struct tdb *); /* termination */
int (*xf_input)(struct mbuf *, struct tdb *, int, int); /* input */
int (*xf_output)(struct mbuf *, struct tdb *, struct mbuf **, int, int); /* output */
};
/* xform IDs */
#define XF_IP4 1 /* IP inside IP */
#define XF_AH 2 /* AH */
#define XF_ESP 3 /* ESP */
#define XF_TCPSIGNATURE 5 /* TCP MD5 Signature option, RFC 2358 */
/* xform attributes */
#define XFT_AUTH 0x0001
#define XFT_CONF 0x0100
#define IPSEC_ZEROES_SIZE 256 /* Larger than an IP6 extension hdr. */
#define IPSEC_KERNFS_BUFSIZE 4096
#if BYTE_ORDER == LITTLE_ENDIAN
static __inline u_int64_t
htonq(u_int64_t q)
{
register u_int32_t u, l;
u = q >> 32;
l = (u_int32_t) q;
return htonl(u) | ((u_int64_t)htonl(l) << 32);
}
#define ntohq(_x) htonq(_x)
#elif BYTE_ORDER == BIG_ENDIAN
#define htonq(_x) (_x)
#define ntohq(_x) htonq(_x)
#else
#error "Please fix <machine/endian.h>"
#endif
#ifdef _KERNEL
/*
* Protects all tdb lists.
* Must at least be splsoftnet (note: do not use splsoftclock as it is
* special on some architectures, assuming it is always an spl lowering
* operation).
*/
#define spltdb splsoftnet
extern int encdebug;
extern int ipsec_acl;
extern int ipsec_keep_invalid;
extern int ipsec_in_use;
extern u_int64_t ipsec_last_added;
extern int ipsec_require_pfs;
extern int ipsec_expire_acquire;
extern int ipsec_soft_allocations;
extern int ipsec_exp_allocations;
extern int ipsec_soft_bytes;
extern int ipsec_exp_bytes;
extern int ipsec_soft_timeout;
extern int ipsec_exp_timeout;
extern int ipsec_soft_first_use;
extern int ipsec_exp_first_use;
extern char ipsec_def_enc[];
extern char ipsec_def_auth[];
extern struct enc_xform enc_xform_des;
extern struct enc_xform enc_xform_3des;
extern struct enc_xform enc_xform_blf;
extern struct enc_xform enc_xform_cast5;
extern struct enc_xform enc_xform_skipjack;
extern struct auth_hash auth_hash_hmac_md5_96;
extern struct auth_hash auth_hash_hmac_sha1_96;
extern struct auth_hash auth_hash_hmac_ripemd_160_96;
extern TAILQ_HEAD(expclusterlist_head, tdb) expclusterlist;
extern TAILQ_HEAD(explist_head, tdb) explist;
extern TAILQ_HEAD(ipsec_policy_head, ipsec_policy) ipsec_policy_head;
extern TAILQ_HEAD(ipsec_acquire_head, ipsec_acquire) ipsec_acquire_head;
extern struct xformsw xformsw[], *xformswNXFORMSW;
/* Check if a given tdb has encryption, authentication and/or tunneling */
#define TDB_ATTRIB(x) (((x)->tdb_encalgxform ? NOTIFY_SATYPE_CONF : 0)| \
((x)->tdb_authalgxform ? NOTIFY_SATYPE_AUTH : 0))
/* Traverse spi chain and get attributes */
#define SPI_CHAIN_ATTRIB(have, TDB_DIR, TDBP) do {\
int s = spltdb(); \
struct tdb *tmptdb = (TDBP); \
\
(have) = 0; \
while (tmptdb && tmptdb->tdb_xform) { \
if (tmptdb == NULL || tmptdb->tdb_flags & TDBF_INVALID) \
break; \
(have) |= TDB_ATTRIB(tmptdb); \
tmptdb = tmptdb->TDB_DIR; \
} \
splx(s); \
} while (0)
/* Misc. */
extern char *inet_ntoa4(struct in_addr);
extern char *ipsp_address(union sockaddr_union);
/* TDB management routines */
extern void tdb_add_inp(struct tdb *tdb, struct inpcb *inp);
extern u_int32_t reserve_spi(u_int32_t, u_int32_t, union sockaddr_union *,
union sockaddr_union *, u_int8_t, int *);
extern struct tdb *gettdb(u_int32_t, union sockaddr_union *, u_int8_t);
extern struct tdb *gettdbbyaddr(union sockaddr_union *, u_int8_t,
struct mbuf *, int);
extern struct tdb *gettdbbysrc(union sockaddr_union *, u_int8_t,
struct mbuf *, int);
extern void puttdb(struct tdb *);
extern void tdb_delete(struct tdb *, int);
extern int tdb_init(struct tdb *, u_int16_t, struct ipsecinit *);
extern void tdb_expiration(struct tdb *, int);
/* Flag values for the last argument of tdb_expiration(). */
#define TDBEXP_EARLY 1 /* The tdb is likely to end up early. */
#define TDBEXP_TIMEOUT 2 /* Maintain expiration timeout. */
extern int tdb_walk(int (*)(struct tdb *, void *), void *);
extern void handle_expirations(void *);
/* XF_IP4 */
extern int ipe4_attach(void);
extern int ipe4_init(struct tdb *, struct xformsw *, struct ipsecinit *);
extern int ipe4_zeroize(struct tdb *);
extern int ipip_output(struct mbuf *, struct tdb *, struct mbuf **, int, int);
extern void ipe4_input __P((struct mbuf *, ...));
extern void ipip_input __P((struct mbuf *, int));
#ifdef INET
extern void ip4_input __P((struct mbuf *, ...));
#endif /* INET */
#ifdef INET6
extern int ip4_input6 __P((struct mbuf **, int *, int));
#endif /* INET */
/* XF_ETHERIP */
extern int etherip_output(struct mbuf *, struct tdb *, struct mbuf **,
int, int);
extern void etherip_input __P((struct mbuf *, ...));
/* XF_AH */
extern int ah_attach(void);
extern int ah_init(struct tdb *, struct xformsw *, struct ipsecinit *);
extern int ah_zeroize(struct tdb *);
extern int ah_output(struct mbuf *, struct tdb *, struct mbuf **, int, int);
extern int ah_output_cb(void *);
extern int ah_input(struct mbuf *, struct tdb *, int, int);
extern int ah_input_cb(void *);
extern int ah_sysctl(int *, u_int, void *, size_t *, void *, size_t);
extern int ah_massage_headers(struct mbuf **, int, int, int, int);
#ifdef INET
extern void ah4_input __P((struct mbuf *, ...));
extern int ah4_input_cb __P((struct mbuf *, ...));
#endif /* INET */
#ifdef INET6
extern int ah6_input __P((struct mbuf **, int *, int));
extern int ah6_input_cb __P((struct mbuf *, int, int));
#endif /* INET6 */
/* XF_ESP */
extern int esp_attach(void);
extern int esp_init(struct tdb *, struct xformsw *, struct ipsecinit *);
extern int esp_zeroize(struct tdb *);
extern int esp_output(struct mbuf *, struct tdb *, struct mbuf **, int, int);
extern int esp_output_cb(void *);
extern int esp_input(struct mbuf *, struct tdb *, int, int);
extern int esp_input_cb(void *);
extern int esp_sysctl(int *, u_int, void *, size_t *, void *, size_t);
#ifdef INET
extern void esp4_input __P((struct mbuf *, ...));
extern int esp4_input_cb __P((struct mbuf *, ...));
#endif /* INET */
#ifdef INET6
extern int esp6_input __P((struct mbuf **, int *, int));
extern int esp6_input_cb __P((struct mbuf *, int, int));
#endif /* INET6 */
/* XF_TCPSIGNATURE */
extern int tcp_signature_tdb_attach __P((void));
extern int tcp_signature_tdb_init __P((struct tdb *, struct xformsw *,
struct ipsecinit *));
extern int tcp_signature_tdb_zeroize __P((struct tdb *));
extern int tcp_signature_tdb_input __P((struct mbuf *, struct tdb *, int,
int));
extern int tcp_signature_tdb_output __P((struct mbuf *, struct tdb *,
struct mbuf **, int, int));
/* Padding */
extern caddr_t m_pad(struct mbuf *, int);
/* Replay window */
extern int checkreplaywindow32(u_int32_t, u_int32_t, u_int32_t *, u_int32_t,
u_int32_t *);
extern unsigned char ipseczeroes[];
/* Packet processing */
extern int ipsp_process_packet(struct mbuf *, struct tdb *, int, int);
extern int ipsp_process_done(struct mbuf *, struct tdb *);
extern struct tdb *ipsp_spd_lookup(struct mbuf *, int, int, int *, int,
struct tdb *, struct inpcb *);
extern int ipsec_common_input_cb(struct mbuf *, struct tdb *, int, int);
extern int ipsp_acquire_sa(struct ipsec_policy *, union sockaddr_union *,
union sockaddr_union *, struct sockaddr_encap *);
extern struct ipsec_policy *ipsec_add_policy(struct sockaddr_encap *,
struct sockaddr_encap *,
union sockaddr_union *, int, int);
extern int ipsp_match_policy(struct tdb *, struct ipsec_policy *,
struct mbuf *, int);
extern void ipsp_acquire_expirations(void *);
extern int ipsec_delete_policy(struct ipsec_policy *);
extern struct ipsec_acquire *ipsec_get_acquire(u_int32_t);
#endif /* _KERNEL */
#endif /* _NETINET_IPSP_H_ */
|
