ip_ipsp.h revision 1.190
1/* $OpenBSD: ip_ipsp.h,v 1.190 2018/07/10 11:34:12 mpi Exp $ */ 2/* 3 * The authors of this code are John Ioannidis (ji@tla.org), 4 * Angelos D. Keromytis (kermit@csd.uch.gr), 5 * Niels Provos (provos@physnet.uni-hamburg.de) and 6 * Niklas Hallqvist (niklas@appli.se). 7 * 8 * The original version of this code was written by John Ioannidis 9 * for BSD/OS in Athens, Greece, in November 1995. 10 * 11 * Ported to OpenBSD and NetBSD, with additional transforms, in December 1996, 12 * by Angelos D. Keromytis. 13 * 14 * Additional transforms and features in 1997 and 1998 by Angelos D. Keromytis 15 * and Niels Provos. 16 * 17 * Additional features in 1999 by Angelos D. Keromytis and Niklas Hallqvist. 18 * 19 * Copyright (c) 1995, 1996, 1997, 1998, 1999 by John Ioannidis, 20 * Angelos D. Keromytis and Niels Provos. 21 * Copyright (c) 1999 Niklas Hallqvist. 22 * Copyright (c) 2001, Angelos D. Keromytis. 23 * 24 * Permission to use, copy, and modify this software with or without fee 25 * is hereby granted, provided that this entire notice is included in 26 * all copies of any software which is or includes a copy or 27 * modification of this software. 28 * You may use this code under the GNU public license if you so wish. Please 29 * contribute changes back to the authors under this freer than GPL license 30 * so that we may further the use of strong encryption without limitations to 31 * all. 32 * 33 * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR 34 * IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY 35 * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE 36 * MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR 37 * PURPOSE. 38 */ 39 40#ifndef _NETINET_IPSP_H_ 41#define _NETINET_IPSP_H_ 42 43/* IPSP global definitions. */ 44 45#include <sys/types.h> 46#include <netinet/in.h> 47 48union sockaddr_union { 49 struct sockaddr sa; 50 struct sockaddr_in sin; 51 struct sockaddr_in6 sin6; 52}; 53 54#define AH_HMAC_MAX_HASHLEN 32 /* 256 bits of authenticator for SHA512 */ 55#define AH_HMAC_RPLENGTH 4 /* 32 bits of replay counter */ 56#define AH_HMAC_INITIAL_RPL 1 /* Replay counter initial value */ 57 58/* Authenticator lengths */ 59#define AH_MD5_ALEN 16 60#define AH_SHA1_ALEN 20 61#define AH_RMD160_ALEN 20 62#define AH_SHA2_256_ALEN 32 63#define AH_SHA2_384_ALEN 48 64#define AH_SHA2_512_ALEN 64 65#define AH_ALEN_MAX 64 /* Keep updated */ 66 67/* Reserved SPI numbers */ 68#define SPI_LOCAL_USE 0 69#define SPI_RESERVED_MIN 1 70#define SPI_RESERVED_MAX 255 71 72/* Reserved CPI numbers */ 73#define CPI_RESERVED_MIN 1 74#define CPI_RESERVED_MAX 255 75#define CPI_PRIVATE_MIN 61440 76#define CPI_PRIVATE_MAX 65535 77 78/* sysctl default values */ 79#define IPSEC_DEFAULT_EMBRYONIC_SA_TIMEOUT 60 /* 1 minute */ 80#define IPSEC_DEFAULT_PFS 1 81#define IPSEC_DEFAULT_SOFT_ALLOCATIONS 0 82#define IPSEC_DEFAULT_EXP_ALLOCATIONS 0 83#define IPSEC_DEFAULT_SOFT_BYTES 0 84#define IPSEC_DEFAULT_EXP_BYTES 0 85#define IPSEC_DEFAULT_SOFT_TIMEOUT 80000 86#define IPSEC_DEFAULT_EXP_TIMEOUT 86400 87#define IPSEC_DEFAULT_SOFT_FIRST_USE 3600 88#define IPSEC_DEFAULT_EXP_FIRST_USE 7200 89#define IPSEC_DEFAULT_DEF_ENC "aes" 90#define IPSEC_DEFAULT_DEF_AUTH "hmac-sha1" 91#define IPSEC_DEFAULT_EXPIRE_ACQUIRE 30 92#define IPSEC_DEFAULT_DEF_COMP "deflate" 93 94struct sockaddr_encap { 95 u_int8_t sen_len; /* length */ 96 u_int8_t sen_family; /* PF_KEY */ 97 u_int16_t sen_type; /* see SENT_* */ 98 union { 99 struct { /* SENT_IP4 */ 100 u_int8_t Direction; 101 struct in_addr Src; 102 struct in_addr Dst; 103 u_int8_t Proto; 104 u_int16_t Sport; 105 u_int16_t Dport; 106 } Sip4; 107 108 struct { /* SENT_IP6 */ 109 u_int8_t Direction; 110 struct in6_addr Src; 111 struct in6_addr Dst; 112 u_int8_t Proto; 113 u_int16_t Sport; 114 u_int16_t Dport; 115 } Sip6; 116 117 struct ipsec_policy *PolicyHead; /* SENT_IPSP */ 118 } Sen; 119}; 120 121#define IPSP_DIRECTION_IN 0x1 122#define IPSP_DIRECTION_OUT 0x2 123 124struct ipsecstat { 125 uint64_t ipsec_ipackets; /* Input IPsec packets */ 126 uint64_t ipsec_opackets; /* Output IPsec packets */ 127 uint64_t ipsec_ibytes; /* Input bytes */ 128 uint64_t ipsec_obytes; /* Output bytes */ 129 uint64_t ipsec_idecompbytes; /* Input bytes, decompressed */ 130 uint64_t ipsec_ouncompbytes; /* Output bytes, uncompressed */ 131 uint64_t ipsec_idrops; /* Dropped on input */ 132 uint64_t ipsec_odrops; /* Dropped on output */ 133 uint64_t ipsec_crypto; /* Crypto processing failure */ 134 uint64_t ipsec_notdb; /* Expired while in crypto */ 135 uint64_t ipsec_noxform; /* Crypto error */ 136}; 137 138#ifdef _KERNEL 139 140#include <sys/timeout.h> 141#include <sys/tree.h> 142#include <sys/queue.h> 143#include <net/radix.h> 144#include <sys/percpu.h> 145 146enum ipsec_counters { 147 ipsec_ipackets, 148 ipsec_opackets, 149 ipsec_ibytes, 150 ipsec_obytes, 151 ipsec_idecompbytes, 152 ipsec_ouncompbytes, 153 ipsec_idrops, 154 ipsec_odrops, 155 ipsec_crypto, 156 ipsec_notdb, 157 ipsec_noxform, 158 ipsec_ncounters 159}; 160 161extern struct cpumem *ipseccounters; 162 163static inline void 164ipsecstat_inc(enum ipsec_counters c) 165{ 166 counters_inc(ipseccounters, c); 167} 168 169static inline void 170ipsecstat_add(enum ipsec_counters c, uint64_t v) 171{ 172 counters_add(ipseccounters, c, v); 173} 174 175struct m_tag; 176 177#define sen_data Sen.Data 178#define sen_ip_src Sen.Sip4.Src 179#define sen_ip_dst Sen.Sip4.Dst 180#define sen_proto Sen.Sip4.Proto 181#define sen_sport Sen.Sip4.Sport 182#define sen_dport Sen.Sip4.Dport 183#define sen_direction Sen.Sip4.Direction 184#define sen_ip6_src Sen.Sip6.Src 185#define sen_ip6_dst Sen.Sip6.Dst 186#define sen_ip6_proto Sen.Sip6.Proto 187#define sen_ip6_sport Sen.Sip6.Sport 188#define sen_ip6_dport Sen.Sip6.Dport 189#define sen_ip6_direction Sen.Sip6.Direction 190#define sen_ipsp Sen.PolicyHead 191 192/* 193 * The "type" is really part of the address as far as the routing 194 * system is concerned. By using only one bit in the type field 195 * for each type, we sort-of make sure that different types of 196 * encapsulation addresses won't be matched against the wrong type. 197 * 198 */ 199 200#define SENT_IP4 0x0001 /* data is two struct in_addr */ 201#define SENT_IPSP 0x0002 /* data as in IP4/6 plus SPI */ 202#define SENT_IP6 0x0004 203 204#define SENT_LEN sizeof(struct sockaddr_encap) 205 206struct ipsec_id { 207 u_int16_t type; /* Subtype of data */ 208 int16_t len; /* Length of data following */ 209}; 210 211struct ipsec_ids { 212 RBT_ENTRY(ipsec_ids) id_node_id; 213 RBT_ENTRY(ipsec_ids) id_node_flow; 214 struct ipsec_id *id_local; 215 struct ipsec_id *id_remote; 216 u_int32_t id_flow; 217 int id_refcount; 218 struct timeout id_timeout; 219}; 220RBT_HEAD(ipsec_ids_flows, ipsec_ids); 221RBT_HEAD(ipsec_ids_tree, ipsec_ids); 222 223struct ipsec_acquire { 224 union sockaddr_union ipa_addr; 225 u_int32_t ipa_seq; 226 struct sockaddr_encap ipa_info; 227 struct sockaddr_encap ipa_mask; 228 struct timeout ipa_timeout; 229 struct ipsec_policy *ipa_policy; 230 struct inpcb *ipa_pcb; 231 TAILQ_ENTRY(ipsec_acquire) ipa_ipo_next; 232 TAILQ_ENTRY(ipsec_acquire) ipa_next; 233}; 234 235struct ipsec_policy { 236 struct radix_node ipo_nodes[2]; /* radix tree glue */ 237 struct sockaddr_encap ipo_addr; 238 struct sockaddr_encap ipo_mask; 239 240 union sockaddr_union ipo_src; /* Local address to use */ 241 union sockaddr_union ipo_dst; /* Remote gateway -- if it's zeroed: 242 * - on output, we try to 243 * contact the remote host 244 * directly (if needed). 245 * - on input, we accept on if 246 * the inner source is the 247 * same as the outer source 248 * address, or if transport 249 * mode was used. 250 */ 251 252 u_int64_t ipo_last_searched; /* Timestamp of last lookup */ 253 254 u_int8_t ipo_flags; /* See IPSP_POLICY_* definitions */ 255 u_int8_t ipo_type; /* USE/ACQUIRE/... */ 256 u_int8_t ipo_sproto; /* ESP/AH; if zero, use system dflts */ 257 u_int ipo_rdomain; 258 259 int ipo_ref_count; 260 261 struct tdb *ipo_tdb; /* Cached entry */ 262 263 struct ipsec_ids *ipo_ids; 264 265 TAILQ_HEAD(ipo_acquires_head, ipsec_acquire) ipo_acquires; /* List of acquires */ 266 TAILQ_ENTRY(ipsec_policy) ipo_tdb_next; /* List TDB policies */ 267 TAILQ_ENTRY(ipsec_policy) ipo_list; /* List of all policies */ 268}; 269 270#define IPSP_POLICY_NONE 0x0000 /* No flags set */ 271#define IPSP_POLICY_STATIC 0x0002 /* Static policy */ 272 273#define IPSP_IPSEC_USE 0 /* Use if existing, don't acquire */ 274#define IPSP_IPSEC_ACQUIRE 1 /* Try acquire, let packet through */ 275#define IPSP_IPSEC_REQUIRE 2 /* Require SA */ 276#define IPSP_PERMIT 3 /* Permit traffic through */ 277#define IPSP_DENY 4 /* Deny traffic */ 278#define IPSP_IPSEC_DONTACQ 5 /* Require, but don't acquire */ 279 280/* Identity types */ 281#define IPSP_IDENTITY_NONE 0 282#define IPSP_IDENTITY_PREFIX 1 283#define IPSP_IDENTITY_FQDN 2 284#define IPSP_IDENTITY_USERFQDN 3 285 286struct tdb { /* tunnel descriptor block */ 287 /* 288 * Each TDB is on three hash tables: one keyed on dst/spi/sproto, 289 * one keyed on dst/sproto, and one keyed on src/sproto. The first 290 * is used for finding a specific TDB, the second for finding TDBs 291 * for outgoing policy matching, and the third for incoming 292 * policy matching. The following three fields maintain the hash 293 * queues in those three tables. 294 */ 295 struct tdb *tdb_hnext; /* dst/spi/sproto table */ 296 struct tdb *tdb_dnext; /* dst/sproto table */ 297 struct tdb *tdb_snext; /* src/sproto table */ 298 struct tdb *tdb_inext; 299 struct tdb *tdb_onext; 300 301 struct xformsw *tdb_xform; /* Transform to use */ 302 struct enc_xform *tdb_encalgxform; /* Enc algorithm */ 303 struct auth_hash *tdb_authalgxform; /* Auth algorithm */ 304 struct comp_algo *tdb_compalgxform; /* Compression algo */ 305 306#define TDBF_UNIQUE 0x00001 /* This should not be used by others */ 307#define TDBF_TIMER 0x00002 /* Absolute expiration timer in use */ 308#define TDBF_BYTES 0x00004 /* Check the byte counters */ 309#define TDBF_ALLOCATIONS 0x00008 /* Check the flows counters */ 310#define TDBF_INVALID 0x00010 /* This SPI is not valid yet/anymore */ 311#define TDBF_FIRSTUSE 0x00020 /* Expire after first use */ 312#define TDBF_SOFT_TIMER 0x00080 /* Soft expiration */ 313#define TDBF_SOFT_BYTES 0x00100 /* Soft expiration */ 314#define TDBF_SOFT_ALLOCATIONS 0x00200 /* Soft expiration */ 315#define TDBF_SOFT_FIRSTUSE 0x00400 /* Soft expiration */ 316#define TDBF_PFS 0x00800 /* Ask for PFS from Key Mgmt. */ 317#define TDBF_TUNNELING 0x01000 /* Force IP-IP encapsulation */ 318#define TDBF_USEDTUNNEL 0x10000 /* Appended a tunnel header in past */ 319#define TDBF_UDPENCAP 0x20000 /* UDP encapsulation */ 320#define TDBF_PFSYNC 0x40000 /* TDB will be synced */ 321#define TDBF_PFSYNC_RPL 0x80000 /* Replay counter should be bumped */ 322#define TDBF_ESN 0x100000 /* 64-bit sequence numbers (ESN) */ 323 324 u_int32_t tdb_flags; /* Flags related to this TDB */ 325 326 struct timeout tdb_timer_tmo; 327 struct timeout tdb_first_tmo; 328 struct timeout tdb_stimer_tmo; 329 struct timeout tdb_sfirst_tmo; 330 331 u_int32_t tdb_seq; /* Tracking number for PFKEY */ 332 u_int32_t tdb_exp_allocations; /* Expire after so many flows */ 333 u_int32_t tdb_soft_allocations; /* Expiration warning */ 334 u_int32_t tdb_cur_allocations; /* Total number of allocs */ 335 336 u_int64_t tdb_exp_bytes; /* Expire after so many bytes passed */ 337 u_int64_t tdb_soft_bytes; /* Expiration warning */ 338 u_int64_t tdb_cur_bytes; /* Current count of bytes */ 339 340 u_int64_t tdb_exp_timeout; /* When does the SPI expire */ 341 u_int64_t tdb_soft_timeout; /* Send soft-expire warning */ 342 u_int64_t tdb_established; /* When was SPI established */ 343 344 u_int64_t tdb_first_use; /* When was it first used */ 345 u_int64_t tdb_soft_first_use; /* Soft warning */ 346 u_int64_t tdb_exp_first_use; /* Expire if tdb_first_use + 347 * tdb_exp_first_use <= curtime 348 */ 349 350 u_int64_t tdb_last_used; /* When was this SA last used */ 351 u_int64_t tdb_last_marked;/* Last SKIPCRYPTO status change */ 352 353 u_int64_t tdb_cryptoid; /* Crypto session ID */ 354 355 u_int32_t tdb_spi; /* SPI */ 356 u_int16_t tdb_amxkeylen; /* Raw authentication key length */ 357 u_int16_t tdb_emxkeylen; /* Raw encryption key length */ 358 u_int16_t tdb_ivlen; /* IV length */ 359 u_int8_t tdb_sproto; /* IPsec protocol */ 360 u_int8_t tdb_wnd; /* Replay window */ 361 u_int8_t tdb_satype; /* SA type (RFC2367, PF_KEY) */ 362 u_int8_t tdb_updates; /* pfsync update counter */ 363 364 union sockaddr_union tdb_dst; /* Destination address */ 365 union sockaddr_union tdb_src; /* Source address */ 366 367 u_int8_t *tdb_amxkey; /* Raw authentication key */ 368 u_int8_t *tdb_emxkey; /* Raw encryption key */ 369 370#define TDB_REPLAYWASTE 32 371#define TDB_REPLAYMAX (2100+TDB_REPLAYWASTE) 372 373 u_int64_t tdb_rpl; /* Replay counter */ 374 u_int32_t tdb_seen[howmany(TDB_REPLAYMAX, 32)]; /* Anti-replay window */ 375 376 u_int8_t tdb_iv[4]; /* Used for HALF-IV ESP */ 377 378 struct ipsec_ids *tdb_ids; /* Src/Dst ID for this SA */ 379 int tdb_ids_swapped; /* XXX */ 380 381 u_int32_t tdb_mtu; /* MTU at this point in the chain */ 382 u_int64_t tdb_mtutimeout; /* When to ignore this entry */ 383 384 u_int16_t tdb_udpencap_port; /* Peer UDP port */ 385 386 u_int16_t tdb_tag; /* Packet filter tag */ 387 u_int32_t tdb_tap; /* Alternate enc(4) interface */ 388 389 u_int tdb_rdomain; /* Routing domain */ 390 391 struct sockaddr_encap tdb_filter; /* What traffic is acceptable */ 392 struct sockaddr_encap tdb_filtermask; /* And the mask */ 393 394 TAILQ_HEAD(tdb_policy_head, ipsec_policy) tdb_policy_head; 395 TAILQ_ENTRY(tdb) tdb_sync_entry; 396}; 397 398 399struct tdb_ident { 400 u_int32_t spi; 401 union sockaddr_union dst; 402 u_int8_t proto; 403 u_int rdomain; 404}; 405 406struct tdb_crypto { 407 u_int32_t tc_spi; 408 union sockaddr_union tc_dst; 409 u_int8_t tc_proto; 410 int tc_protoff; 411 int tc_skip; 412 u_int tc_rdomain; 413}; 414 415struct ipsecinit { 416 u_int8_t *ii_enckey; 417 u_int8_t *ii_authkey; 418 u_int16_t ii_enckeylen; 419 u_int16_t ii_authkeylen; 420 u_int8_t ii_encalg; 421 u_int8_t ii_authalg; 422 u_int8_t ii_compalg; 423}; 424 425/* xform IDs */ 426#define XF_IP4 1 /* IP inside IP */ 427#define XF_AH 2 /* AH */ 428#define XF_ESP 3 /* ESP */ 429#define XF_TCPSIGNATURE 5 /* TCP MD5 Signature option, RFC 2358 */ 430#define XF_IPCOMP 6 /* IPCOMP */ 431 432/* xform attributes */ 433#define XFT_AUTH 0x0001 434#define XFT_CONF 0x0100 435#define XFT_COMP 0x1000 436 437#define IPSEC_ZEROES_SIZE 256 /* Larger than an IP6 extension hdr. */ 438 439struct xformsw { 440 u_short xf_type; /* Unique ID of xform */ 441 u_short xf_flags; /* flags (see below) */ 442 char *xf_name; /* human-readable name */ 443 int (*xf_attach)(void); /* called at config time */ 444 int (*xf_init)(struct tdb *, struct xformsw *, struct ipsecinit *); 445 int (*xf_zeroize)(struct tdb *); /* termination */ 446 int (*xf_input)(struct mbuf *, struct tdb *, int, int); /* input */ 447 int (*xf_output)(struct mbuf *, struct tdb *, struct mbuf **, 448 int, int); /* output */ 449}; 450 451extern int ipsec_in_use; 452extern u_int64_t ipsec_last_added; 453extern int ipsec_policy_pool_initialized; 454extern int encdebug; /* enable message reporting */ 455 456extern int ipsec_keep_invalid; /* lifetime of embryonic SAs (in sec) */ 457extern int ipsec_require_pfs; /* use Perfect Forward Secrecy */ 458extern int ipsec_expire_acquire; /* wait for security assoc. (in sec) */ 459extern int ipsec_soft_allocations; /* flows/SA before renegotiation */ 460extern int ipsec_exp_allocations; /* num. of flows/SA before it expires */ 461extern int ipsec_soft_bytes; /* bytes/SA before renegotiation */ 462extern int ipsec_exp_bytes; /* num of bytes/SA before it expires */ 463extern int ipsec_soft_timeout; /* seconds/SA before renegotiation */ 464extern int ipsec_exp_timeout; /* seconds/SA before it expires */ 465extern int ipsec_soft_first_use; /* seconds between 1st asso & renego */ 466extern int ipsec_exp_first_use; /* seconds between 1st asso & expire */ 467 468/* 469 * Names for IPsec sysctl objects 470 */ 471#define IPSEC_ENCDEBUG IPCTL_ENCDEBUG /* 12 */ 472#define IPSEC_STATS IPCTL_IPSEC_STATS /* 13 */ 473#define IPSEC_EXPIRE_ACQUIRE IPCTL_IPSEC_EXPIRE_ACQUIRE /* 14 */ 474#define IPSEC_EMBRYONIC_SA_TIMEOUT IPCTL_IPSEC_EMBRYONIC_SA_TIMEOUT/* 15 */ 475#define IPSEC_REQUIRE_PFS IPCTL_IPSEC_REQUIRE_PFS /* 16 */ 476#define IPSEC_SOFT_ALLOCATIONS IPCTL_IPSEC_SOFT_ALLOCATIONS /* 17 */ 477#define IPSEC_ALLOCATIONS IPCTL_IPSEC_ALLOCATIONS /* 18 */ 478#define IPSEC_SOFT_BYTES IPCTL_IPSEC_SOFT_BYTES /* 19 */ 479#define IPSEC_BYTES IPCTL_IPSEC_BYTES /* 20 */ 480#define IPSEC_TIMEOUT IPCTL_IPSEC_TIMEOUT /* 21 */ 481#define IPSEC_SOFT_TIMEOUT IPCTL_IPSEC_SOFT_TIMEOUT /* 22 */ 482#define IPSEC_SOFT_FIRSTUSE IPCTL_IPSEC_SOFT_FIRSTUSE /* 23 */ 483#define IPSEC_FIRSTUSE IPCTL_IPSEC_FIRSTUSE /* 24 */ 484#define IPSEC_MAXID 25 485 486#define IPSECCTL_VARS { \ 487 NULL, \ 488 NULL, \ 489 NULL, \ 490 NULL, \ 491 NULL, \ 492 NULL, \ 493 NULL, \ 494 NULL, \ 495 NULL, \ 496 NULL, \ 497 NULL, \ 498 NULL, \ 499 &encdebug, \ 500 NULL, /* ipsecstat */ \ 501 &ipsec_expire_acquire, \ 502 &ipsec_keep_invalid, \ 503 &ipsec_require_pfs, \ 504 &ipsec_soft_allocations, \ 505 &ipsec_exp_allocations, \ 506 &ipsec_soft_bytes, \ 507 &ipsec_exp_bytes, \ 508 &ipsec_exp_timeout, \ 509 &ipsec_soft_timeout, \ 510 &ipsec_soft_first_use, \ 511 &ipsec_exp_first_use, \ 512} 513 514extern char ipsec_def_enc[]; 515extern char ipsec_def_auth[]; 516extern char ipsec_def_comp[]; 517 518extern struct enc_xform enc_xform_des; 519extern struct enc_xform enc_xform_3des; 520extern struct enc_xform enc_xform_blf; 521extern struct enc_xform enc_xform_cast5; 522 523extern struct auth_hash auth_hash_hmac_md5_96; 524extern struct auth_hash auth_hash_hmac_sha1_96; 525extern struct auth_hash auth_hash_hmac_ripemd_160_96; 526 527extern struct comp_algo comp_algo_deflate; 528 529extern TAILQ_HEAD(ipsec_policy_head, ipsec_policy) ipsec_policy_head; 530 531struct cryptop; 532 533/* Misc. */ 534#ifdef ENCDEBUG 535const char *ipsp_address(union sockaddr_union *, char *, socklen_t); 536#endif /* ENCDEBUG */ 537 538/* SPD tables */ 539struct radix_node_head *spd_table_add(unsigned int); 540struct radix_node_head *spd_table_get(unsigned int); 541int spd_table_walk(unsigned int, 542 int (*walker)(struct ipsec_policy *, void *, unsigned int), void *); 543 544/* TDB management routines */ 545uint32_t reserve_spi(u_int, u_int32_t, u_int32_t, union sockaddr_union *, 546 union sockaddr_union *, u_int8_t, int *); 547struct tdb *gettdb(u_int, u_int32_t, union sockaddr_union *, u_int8_t); 548struct tdb *gettdbbydst(u_int, union sockaddr_union *, u_int8_t, 549 struct ipsec_ids *, 550 struct sockaddr_encap *, struct sockaddr_encap *); 551struct tdb *gettdbbysrc(u_int, union sockaddr_union *, u_int8_t, 552 struct ipsec_ids *, 553 struct sockaddr_encap *, struct sockaddr_encap *); 554struct tdb *gettdbbysrcdst(u_int, u_int32_t, union sockaddr_union *, 555 union sockaddr_union *, u_int8_t); 556void puttdb(struct tdb *); 557void tdb_delete(struct tdb *); 558struct tdb *tdb_alloc(u_int); 559void tdb_free(struct tdb *); 560int tdb_init(struct tdb *, u_int16_t, struct ipsecinit *); 561void tdb_unlink(struct tdb *); 562int tdb_walk(u_int, int (*)(struct tdb *, void *, int), void *); 563 564/* XF_IP4 */ 565int ipe4_attach(void); 566int ipe4_init(struct tdb *, struct xformsw *, struct ipsecinit *); 567int ipe4_zeroize(struct tdb *); 568int ipe4_input(struct mbuf *, struct tdb *, int, int); 569 570/* XF_AH */ 571int ah_attach(void); 572int ah_init(struct tdb *, struct xformsw *, struct ipsecinit *); 573int ah_zeroize(struct tdb *); 574int ah_input(struct mbuf *, struct tdb *, int, int); 575int ah_output(struct mbuf *, struct tdb *, struct mbuf **, int, int); 576int ah_sysctl(int *, u_int, void *, size_t *, void *, size_t); 577 578int ah4_input(struct mbuf **, int *, int, int); 579void ah4_ctlinput(int, struct sockaddr *, u_int, void *); 580void udpencap_ctlinput(int, struct sockaddr *, u_int, void *); 581 582#ifdef INET6 583int ah6_input(struct mbuf **, int *, int, int); 584#endif /* INET6 */ 585 586/* XF_ESP */ 587int esp_attach(void); 588int esp_init(struct tdb *, struct xformsw *, struct ipsecinit *); 589int esp_zeroize(struct tdb *); 590int esp_input(struct mbuf *, struct tdb *, int, int); 591int esp_input_cb(struct tdb *, struct tdb_crypto *, struct mbuf *); 592int esp_output(struct mbuf *, struct tdb *, struct mbuf **, int, int); 593int esp_sysctl(int *, u_int, void *, size_t *, void *, size_t); 594 595int esp4_input(struct mbuf **, int *, int, int); 596void esp4_ctlinput(int, struct sockaddr *, u_int, void *); 597 598#ifdef INET6 599int esp6_input(struct mbuf **, int *, int, int); 600#endif /* INET6 */ 601 602/* XF_IPCOMP */ 603int ipcomp_attach(void); 604int ipcomp_init(struct tdb *, struct xformsw *, struct ipsecinit *); 605int ipcomp_zeroize(struct tdb *); 606int ipcomp_input(struct mbuf *, struct tdb *, int, int); 607int ipcomp_output(struct mbuf *, struct tdb *, struct mbuf **, int, int); 608int ipcomp_sysctl(int *, u_int, void *, size_t *, void *, size_t); 609int ipcomp4_input(struct mbuf **, int *, int, int); 610#ifdef INET6 611int ipcomp6_input(struct mbuf **, int *, int, int); 612#endif /* INET6 */ 613 614/* XF_TCPSIGNATURE */ 615int tcp_signature_tdb_attach(void); 616int tcp_signature_tdb_init(struct tdb *, struct xformsw *, 617 struct ipsecinit *); 618int tcp_signature_tdb_zeroize(struct tdb *); 619int tcp_signature_tdb_input(struct mbuf *, struct tdb *, int, int); 620int tcp_signature_tdb_output(struct mbuf *, struct tdb *, struct mbuf **, 621 int, int); 622 623/* Replay window */ 624int checkreplaywindow(struct tdb *, u_int32_t, u_int32_t *, int); 625 626/* Packet processing */ 627int ipsp_process_packet(struct mbuf *, struct tdb *, int, int); 628int ipsp_process_done(struct mbuf *, struct tdb *); 629struct tdb *ipsp_spd_lookup(struct mbuf *, int, int, int *, int, 630 struct tdb *, struct inpcb *, u_int32_t); 631struct tdb *ipsp_spd_inp(struct mbuf *, int, int, int *, int, 632 struct tdb *, struct inpcb *, struct ipsec_policy *); 633int ipsp_is_unspecified(union sockaddr_union); 634int ipsp_aux_match(struct tdb *, struct ipsec_ids *, 635 struct sockaddr_encap *, struct sockaddr_encap *); 636int ipsp_ids_match(struct ipsec_ids *, struct ipsec_ids *); 637struct ipsec_ids *ipsp_ids_insert(struct ipsec_ids *); 638struct ipsec_ids *ipsp_ids_lookup(u_int32_t); 639void ipsp_ids_free(struct ipsec_ids *); 640 641void ipsec_init(void); 642int ipsec_sysctl(int *, u_int, void *, size_t *, void *, size_t); 643int ipsec_common_input(struct mbuf *, int, int, int, int, int); 644void ipsec_input_cb(struct cryptop *); 645int ipsec_common_input_cb(struct mbuf *, struct tdb *, int, int); 646int ipsec_delete_policy(struct ipsec_policy *); 647ssize_t ipsec_hdrsz(struct tdb *); 648void ipsec_adjust_mtu(struct mbuf *, u_int32_t); 649struct ipsec_acquire *ipsec_get_acquire(u_int32_t); 650int ipsec_forward_check(struct mbuf *, int, int); 651int ipsec_local_check(struct mbuf *, int, int, int); 652 653#endif /* _KERNEL */ 654#endif /* _NETINET_IPSP_H_ */ 655