ip_ipsp.h revision 1.160
1/* $OpenBSD: ip_ipsp.h,v 1.160 2015/01/19 18:36:51 deraadt 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 43struct m_tag; 44 45/* IPSP global definitions. */ 46 47#include <sys/types.h> 48#ifdef _KERNEL 49#include <sys/timeout.h> 50#endif 51#include <sys/queue.h> 52#include <netinet/in.h> 53 54union sockaddr_union { 55 struct sockaddr sa; 56 struct sockaddr_in sin; 57 struct sockaddr_in6 sin6; 58}; 59 60/* HMAC key sizes */ 61#define MD5HMAC96_KEYSIZE 16 62#define SHA1HMAC96_KEYSIZE 20 63#define RIPEMD160HMAC96_KEYSIZE 20 64#define SHA2_256HMAC96_KEYSIZE 32 65#define SHA2_384HMAC96_KEYSIZE 48 66#define SHA2_512HMAC96_KEYSIZE 64 67 68#define AH_HMAC_MAX_HASHLEN 32 /* 256 bits of authenticator for SHA512 */ 69#define AH_HMAC_RPLENGTH 4 /* 32 bits of replay counter */ 70#define AH_HMAC_INITIAL_RPL 1 /* Replay counter initial value */ 71 72/* Authenticator lengths */ 73#define AH_MD5_ALEN 16 74#define AH_SHA1_ALEN 20 75#define AH_RMD160_ALEN 20 76#define AH_SHA2_256_ALEN 32 77#define AH_SHA2_384_ALEN 48 78#define AH_SHA2_512_ALEN 64 79#define AH_ALEN_MAX 64 /* Keep updated */ 80 81/* Reserved SPI numbers */ 82#define SPI_LOCAL_USE 0 83#define SPI_RESERVED_MIN 1 84#define SPI_RESERVED_MAX 255 85 86/* Reserved CPI numbers */ 87#define CPI_RESERVED_MIN 1 88#define CPI_RESERVED_MAX 255 89#define CPI_PRIVATE_MIN 61440 90#define CPI_PRIVATE_MAX 65535 91 92/* sysctl default values */ 93#define IPSEC_DEFAULT_EMBRYONIC_SA_TIMEOUT 60 /* 1 minute */ 94#define IPSEC_DEFAULT_PFS 1 95#define IPSEC_DEFAULT_SOFT_ALLOCATIONS 0 96#define IPSEC_DEFAULT_EXP_ALLOCATIONS 0 97#define IPSEC_DEFAULT_SOFT_BYTES 0 98#define IPSEC_DEFAULT_EXP_BYTES 0 99#define IPSEC_DEFAULT_SOFT_TIMEOUT 80000 100#define IPSEC_DEFAULT_EXP_TIMEOUT 86400 101#define IPSEC_DEFAULT_SOFT_FIRST_USE 3600 102#define IPSEC_DEFAULT_EXP_FIRST_USE 7200 103#define IPSEC_DEFAULT_DEF_ENC "aes" 104#define IPSEC_DEFAULT_DEF_AUTH "hmac-sha1" 105#define IPSEC_DEFAULT_EXPIRE_ACQUIRE 30 106#define IPSEC_DEFAULT_DEF_COMP "deflate" 107 108struct sockaddr_encap { 109 u_int8_t sen_len; /* length */ 110 u_int8_t sen_family; /* PF_KEY */ 111 u_int16_t sen_type; /* see SENT_* */ 112 union { 113 struct { /* SENT_IP4 */ 114 u_int8_t Direction; 115 struct in_addr Src; 116 struct in_addr Dst; 117 u_int8_t Proto; 118 u_int16_t Sport; 119 u_int16_t Dport; 120 } Sip4; 121 122 struct { /* SENT_IP6 */ 123 u_int8_t Direction; 124 struct in6_addr Src; 125 struct in6_addr Dst; 126 u_int8_t Proto; 127 u_int16_t Sport; 128 u_int16_t Dport; 129 } Sip6; 130 131 struct ipsec_policy *PolicyHead; /* SENT_IPSP */ 132 } Sen; 133}; 134 135#define IPSP_DIRECTION_IN 0x1 136#define IPSP_DIRECTION_OUT 0x2 137 138#ifdef _KERNEL 139 140#define sen_data Sen.Data 141#define sen_ip_src Sen.Sip4.Src 142#define sen_ip_dst Sen.Sip4.Dst 143#define sen_proto Sen.Sip4.Proto 144#define sen_sport Sen.Sip4.Sport 145#define sen_dport Sen.Sip4.Dport 146#define sen_direction Sen.Sip4.Direction 147#define sen_ip6_src Sen.Sip6.Src 148#define sen_ip6_dst Sen.Sip6.Dst 149#define sen_ip6_proto Sen.Sip6.Proto 150#define sen_ip6_sport Sen.Sip6.Sport 151#define sen_ip6_dport Sen.Sip6.Dport 152#define sen_ip6_direction Sen.Sip6.Direction 153#define sen_ipsp Sen.PolicyHead 154 155/* 156 * The "type" is really part of the address as far as the routing 157 * system is concerned. By using only one bit in the type field 158 * for each type, we sort-of make sure that different types of 159 * encapsulation addresses won't be matched against the wrong type. 160 * 161 */ 162 163#define SENT_IP4 0x0001 /* data is two struct in_addr */ 164#define SENT_IPSP 0x0002 /* data as in IP4/6 plus SPI */ 165#define SENT_IP6 0x0004 166 167#define SENT_LEN sizeof(struct sockaddr_encap) 168 169struct ipsec_ref { 170 u_int16_t ref_type; /* Subtype of data */ 171 int16_t ref_len; /* Length of data following */ 172 int ref_count; /* Reference count */ 173 int ref_malloctype; /* malloc(9) type, for freeing */ 174}; 175 176struct ipsec_acquire { 177 union sockaddr_union ipa_addr; 178 u_int32_t ipa_seq; 179 struct sockaddr_encap ipa_info; 180 struct sockaddr_encap ipa_mask; 181 struct timeout ipa_timeout; 182 struct ipsec_policy *ipa_policy; 183 struct inpcb *ipa_pcb; 184 TAILQ_ENTRY(ipsec_acquire) ipa_ipo_next; 185 TAILQ_ENTRY(ipsec_acquire) ipa_next; 186 TAILQ_ENTRY(ipsec_acquire) ipa_inp_next; 187}; 188 189struct ipsec_policy { 190 struct sockaddr_encap ipo_addr; 191 struct sockaddr_encap ipo_mask; 192 193 union sockaddr_union ipo_src; /* Local address to use */ 194 union sockaddr_union ipo_dst; /* Remote gateway -- if it's zeroed: 195 * - on output, we try to 196 * contact the remote host 197 * directly (if needed). 198 * - on input, we accept on if 199 * the inner source is the 200 * same as the outer source 201 * address, or if transport 202 * mode was used. 203 */ 204 205 u_int64_t ipo_last_searched; /* Timestamp of last lookup */ 206 207 u_int8_t ipo_flags; /* See IPSP_POLICY_* definitions */ 208 u_int8_t ipo_type; /* USE/ACQUIRE/... */ 209 u_int8_t ipo_sproto; /* ESP/AH; if zero, use system dflts */ 210 u_int ipo_rdomain; 211 212 int ipo_ref_count; 213 214 struct tdb *ipo_tdb; /* Cached entry */ 215 216 struct ipsec_ref *ipo_srcid; 217 struct ipsec_ref *ipo_dstid; 218 struct ipsec_ref *ipo_local_cred; 219 struct ipsec_ref *ipo_local_auth; 220 221 TAILQ_HEAD(ipo_acquires_head, ipsec_acquire) ipo_acquires; /* List of acquires */ 222 TAILQ_ENTRY(ipsec_policy) ipo_tdb_next; /* List TDB policies */ 223 TAILQ_ENTRY(ipsec_policy) ipo_list; /* List of all policies */ 224}; 225 226#define IPSP_POLICY_NONE 0x0000 /* No flags set */ 227#define IPSP_POLICY_SOCKET 0x0001 /* Socket-attached policy */ 228#define IPSP_POLICY_STATIC 0x0002 /* Static policy */ 229 230#define IPSP_IPSEC_USE 0 /* Use if existing, don't acquire */ 231#define IPSP_IPSEC_ACQUIRE 1 /* Try acquire, let packet through */ 232#define IPSP_IPSEC_REQUIRE 2 /* Require SA */ 233#define IPSP_PERMIT 3 /* Permit traffic through */ 234#define IPSP_DENY 4 /* Deny traffic */ 235#define IPSP_IPSEC_DONTACQ 5 /* Require, but don't acquire */ 236 237/* Notification types */ 238#define NOTIFY_SOFT_EXPIRE 0 /* Soft expiration of SA */ 239#define NOTIFY_HARD_EXPIRE 1 /* Hard expiration of SA */ 240#define NOTIFY_REQUEST_SA 2 /* Establish an SA */ 241 242#define NOTIFY_SATYPE_CONF 1 /* SA should do encryption */ 243#define NOTIFY_SATYPE_AUTH 2 /* SA should do authentication */ 244#define NOTIFY_SATYPE_TUNNEL 4 /* SA should use tunneling */ 245#define NOTIFY_SATYPE_COMP 5 /* SA (IPCA) should use compression */ 246 247/* Authentication types */ 248#define IPSP_AUTH_NONE 0 249#define IPSP_AUTH_PASSPHRASE 1 250#define IPSP_AUTH_RSA 2 251 252/* Credential types */ 253#define IPSP_CRED_NONE 0 254#define IPSP_CRED_KEYNOTE 1 255#define IPSP_CRED_X509 2 256 257/* Identity types */ 258#define IPSP_IDENTITY_NONE 0 259#define IPSP_IDENTITY_PREFIX 1 260#define IPSP_IDENTITY_FQDN 2 261#define IPSP_IDENTITY_USERFQDN 3 262#define IPSP_IDENTITY_CONNECTION 4 263 264struct tdb { /* tunnel descriptor block */ 265 /* 266 * Each TDB is on three hash tables: one keyed on dst/spi/sproto, 267 * one keyed on dst/sproto, and one keyed on src/sproto. The first 268 * is used for finding a specific TDB, the second for finding TDBs 269 * for outgoing policy matching, and the third for incoming 270 * policy matching. The following three fields maintain the hash 271 * queues in those three tables. 272 */ 273 struct tdb *tdb_hnext; /* dst/spi/sproto table */ 274 struct tdb *tdb_anext; /* dst/sproto table */ 275 struct tdb *tdb_snext; /* src/sproto table */ 276 struct tdb *tdb_inext; 277 struct tdb *tdb_onext; 278 279 struct xformsw *tdb_xform; /* Transform to use */ 280 struct enc_xform *tdb_encalgxform; /* Enc algorithm */ 281 struct auth_hash *tdb_authalgxform; /* Auth algorithm */ 282 struct comp_algo *tdb_compalgxform; /* Compression algo */ 283 284#define TDBF_UNIQUE 0x00001 /* This should not be used by others */ 285#define TDBF_TIMER 0x00002 /* Absolute expiration timer in use */ 286#define TDBF_BYTES 0x00004 /* Check the byte counters */ 287#define TDBF_ALLOCATIONS 0x00008 /* Check the flows counters */ 288#define TDBF_INVALID 0x00010 /* This SPI is not valid yet/anymore */ 289#define TDBF_FIRSTUSE 0x00020 /* Expire after first use */ 290#define TDBF_SOFT_TIMER 0x00080 /* Soft expiration */ 291#define TDBF_SOFT_BYTES 0x00100 /* Soft expiration */ 292#define TDBF_SOFT_ALLOCATIONS 0x00200 /* Soft expiration */ 293#define TDBF_SOFT_FIRSTUSE 0x00400 /* Soft expiration */ 294#define TDBF_PFS 0x00800 /* Ask for PFS from Key Mgmt. */ 295#define TDBF_TUNNELING 0x01000 /* Force IP-IP encapsulation */ 296#define TDBF_SKIPCRYPTO 0x08000 /* Skip actual crypto processing */ 297#define TDBF_USEDTUNNEL 0x10000 /* Appended a tunnel header in past */ 298#define TDBF_UDPENCAP 0x20000 /* UDP encapsulation */ 299#define TDBF_PFSYNC 0x40000 /* TDB will be synced */ 300#define TDBF_PFSYNC_RPL 0x80000 /* Replay counter should be bumped */ 301#define TDBF_ESN 0x100000 /* 64-bit sequence numbers (ESN) */ 302 303 u_int32_t tdb_flags; /* Flags related to this TDB */ 304 305 struct timeout tdb_timer_tmo; 306 struct timeout tdb_first_tmo; 307 struct timeout tdb_stimer_tmo; 308 struct timeout tdb_sfirst_tmo; 309 310 u_int32_t tdb_seq; /* Tracking number for PFKEY */ 311 u_int32_t tdb_exp_allocations; /* Expire after so many flows */ 312 u_int32_t tdb_soft_allocations; /* Expiration warning */ 313 u_int32_t tdb_cur_allocations; /* Total number of allocs */ 314 315 u_int64_t tdb_exp_bytes; /* Expire after so many bytes passed */ 316 u_int64_t tdb_soft_bytes; /* Expiration warning */ 317 u_int64_t tdb_cur_bytes; /* Current count of bytes */ 318 319 u_int64_t tdb_exp_timeout; /* When does the SPI expire */ 320 u_int64_t tdb_soft_timeout; /* Send soft-expire warning */ 321 u_int64_t tdb_established; /* When was SPI established */ 322 323 u_int64_t tdb_first_use; /* When was it first used */ 324 u_int64_t tdb_soft_first_use; /* Soft warning */ 325 u_int64_t tdb_exp_first_use; /* Expire if tdb_first_use + 326 * tdb_exp_first_use <= curtime 327 */ 328 329 u_int64_t tdb_last_used; /* When was this SA last used */ 330 u_int64_t tdb_last_marked;/* Last SKIPCRYPTO status change */ 331 332 u_int64_t tdb_cryptoid; /* Crypto session ID */ 333 334 u_int32_t tdb_spi; /* SPI */ 335 u_int16_t tdb_amxkeylen; /* Raw authentication key length */ 336 u_int16_t tdb_emxkeylen; /* Raw encryption key length */ 337 u_int16_t tdb_ivlen; /* IV length */ 338 u_int8_t tdb_sproto; /* IPsec protocol */ 339 u_int8_t tdb_wnd; /* Replay window */ 340 u_int8_t tdb_satype; /* SA type (RFC2367, PF_KEY) */ 341 u_int8_t tdb_updates; /* pfsync update counter */ 342 343 union sockaddr_union tdb_dst; /* Destination address */ 344 union sockaddr_union tdb_src; /* Source address */ 345 union sockaddr_union tdb_proxy; 346 347 u_int8_t *tdb_amxkey; /* Raw authentication key */ 348 u_int8_t *tdb_emxkey; /* Raw encryption key */ 349 350#define TDB_REPLAYWASTE 32 351#define TDB_REPLAYMAX (2100+TDB_REPLAYWASTE) 352 353 u_int64_t tdb_rpl; /* Replay counter */ 354 u_int32_t tdb_seen[howmany(TDB_REPLAYMAX, 32)]; /* Anti-replay window */ 355 356 u_int8_t tdb_iv[4]; /* Used for HALF-IV ESP */ 357 358 struct ipsec_ref *tdb_local_cred; 359 struct ipsec_ref *tdb_remote_cred; 360 struct ipsec_ref *tdb_srcid; /* Source ID for this SA */ 361 struct ipsec_ref *tdb_dstid; /* Destination ID for this SA */ 362 struct ipsec_ref *tdb_local_auth;/* Local authentication material */ 363 struct ipsec_ref *tdb_remote_auth;/* Remote authentication material */ 364 365 u_int32_t tdb_mtu; /* MTU at this point in the chain */ 366 u_int64_t tdb_mtutimeout; /* When to ignore this entry */ 367 368 u_int16_t tdb_udpencap_port; /* Peer UDP port */ 369 370 u_int16_t tdb_tag; /* Packet filter tag */ 371 u_int32_t tdb_tap; /* Alternate enc(4) interface */ 372 373 u_int tdb_rdomain; /* Routing domain */ 374 375 struct sockaddr_encap tdb_filter; /* What traffic is acceptable */ 376 struct sockaddr_encap tdb_filtermask; /* And the mask */ 377 378 TAILQ_HEAD(tdb_inp_head_in, inpcb) tdb_inp_in; 379 TAILQ_HEAD(tdb_inp_head_out, inpcb) tdb_inp_out; 380 TAILQ_HEAD(tdb_policy_head, ipsec_policy) tdb_policy_head; 381 TAILQ_ENTRY(tdb) tdb_sync_entry; 382}; 383 384#endif /* _KERNEL */ 385 386struct tdb_ident { 387 u_int32_t spi; 388 union sockaddr_union dst; 389 u_int8_t proto; 390 u_int rdomain; 391}; 392 393struct tdb_crypto { 394 u_int32_t tc_spi; 395 union sockaddr_union tc_dst; 396 u_int8_t tc_proto; 397 int tc_protoff; 398 int tc_skip; 399 caddr_t tc_ptr; 400 u_int tc_rdomain; 401}; 402 403struct ipsecinit { 404 u_int8_t *ii_enckey; 405 u_int8_t *ii_authkey; 406 u_int16_t ii_enckeylen; 407 u_int16_t ii_authkeylen; 408 u_int8_t ii_encalg; 409 u_int8_t ii_authalg; 410 u_int8_t ii_compalg; 411}; 412 413/* xform IDs */ 414#define XF_IP4 1 /* IP inside IP */ 415#define XF_AH 2 /* AH */ 416#define XF_ESP 3 /* ESP */ 417#define XF_TCPSIGNATURE 5 /* TCP MD5 Signature option, RFC 2358 */ 418#define XF_IPCOMP 6 /* IPCOMP */ 419 420/* xform attributes */ 421#define XFT_AUTH 0x0001 422#define XFT_CONF 0x0100 423#define XFT_COMP 0x1000 424 425#define IPSEC_ZEROES_SIZE 256 /* Larger than an IP6 extension hdr. */ 426 427#ifdef _KERNEL 428 429struct xformsw { 430 u_short xf_type; /* Unique ID of xform */ 431 u_short xf_flags; /* flags (see below) */ 432 char *xf_name; /* human-readable name */ 433 int (*xf_attach)(void); /* called at config time */ 434 int (*xf_init)(struct tdb *, struct xformsw *, struct ipsecinit *); 435 int (*xf_zeroize)(struct tdb *); /* termination */ 436 int (*xf_input)(struct mbuf *, struct tdb *, int, int); /* input */ 437 int (*xf_output)(struct mbuf *, struct tdb *, struct mbuf **, 438 int, int); /* output */ 439}; 440 441extern int ipsec_in_use; 442extern u_int64_t ipsec_last_added; 443extern int ipsec_policy_pool_initialized; 444 445extern int ipsec_keep_invalid; /* lifetime of embryonic SAs (in sec) */ 446extern int ipsec_require_pfs; /* use Perfect Forward Secrecy */ 447extern int ipsec_expire_acquire; /* wait for security assoc. (in sec) */ 448extern int ipsec_soft_allocations; /* flows/SA before renegotiation */ 449extern int ipsec_exp_allocations; /* num. of flows/SA before it expires */ 450extern int ipsec_soft_bytes; /* bytes/SA before renegotiation */ 451extern int ipsec_exp_bytes; /* num of bytes/SA before it expires */ 452extern int ipsec_soft_timeout; /* seconds/SA before renegotiation */ 453extern int ipsec_exp_timeout; /* seconds/SA before it expires */ 454extern int ipsec_soft_first_use; /* seconds between 1st asso & renego */ 455extern int ipsec_exp_first_use; /* seconds between 1st asso & expire */ 456 457extern char ipsec_def_enc[]; 458extern char ipsec_def_auth[]; 459extern char ipsec_def_comp[]; 460 461extern struct enc_xform enc_xform_des; 462extern struct enc_xform enc_xform_3des; 463extern struct enc_xform enc_xform_blf; 464extern struct enc_xform enc_xform_cast5; 465 466extern struct auth_hash auth_hash_hmac_md5_96; 467extern struct auth_hash auth_hash_hmac_sha1_96; 468extern struct auth_hash auth_hash_hmac_ripemd_160_96; 469 470extern struct comp_algo comp_algo_deflate; 471 472extern TAILQ_HEAD(ipsec_policy_head, ipsec_policy) ipsec_policy_head; 473extern TAILQ_HEAD(ipsec_acquire_head, ipsec_acquire) ipsec_acquire_head; 474 475/* Check if a given tdb has encryption, authentication and/or tunneling */ 476#define TDB_ATTRIB(x) (((x)->tdb_encalgxform ? NOTIFY_SATYPE_CONF : 0) | \ 477 ((x)->tdb_authalgxform ? NOTIFY_SATYPE_AUTH : 0) | \ 478 ((x)->tdb_compalgxform ? NOTIFY_SATYPE_COMP : 0)) 479 480/* Traverse spi chain and get attributes */ 481 482#define SPI_CHAIN_ATTRIB(have, TDB_DIR, TDBP) \ 483do { \ 484 int s = splsoftnet(); \ 485 struct tdb *tmptdb = (TDBP); \ 486 \ 487 (have) = 0; \ 488 while (tmptdb && tmptdb->tdb_xform) { \ 489 if (tmptdb == NULL || tmptdb->tdb_flags & TDBF_INVALID) \ 490 break; \ 491 (have) |= TDB_ATTRIB(tmptdb); \ 492 tmptdb = tmptdb->TDB_DIR; \ 493 } \ 494 splx(s); \ 495} while (/* CONSTCOND */ 0) 496 497/* Misc. */ 498uint8_t get_sa_require(struct inpcb *); 499#ifdef ENCDEBUG 500const char *ipsp_address(union sockaddr_union); 501#endif /* ENCDEBUG */ 502 503/* TDB management routines */ 504void tdb_add_inp(struct tdb *, struct inpcb *, int); 505uint32_t reserve_spi(u_int, u_int32_t, u_int32_t, union sockaddr_union *, 506 union sockaddr_union *, u_int8_t, int *); 507struct tdb *gettdb(u_int, u_int32_t, union sockaddr_union *, u_int8_t); 508struct tdb *gettdbbyaddr(u_int, union sockaddr_union *, u_int8_t, 509 struct ipsec_ref *, struct ipsec_ref *, struct ipsec_ref *, 510 struct mbuf *, int, struct sockaddr_encap *, 511 struct sockaddr_encap *); 512struct tdb *gettdbbysrc(u_int, union sockaddr_union *, u_int8_t, 513 struct ipsec_ref *, struct ipsec_ref *, struct mbuf *, int, 514 struct sockaddr_encap *, struct sockaddr_encap *); 515struct tdb *gettdbbysrcdst(u_int, u_int32_t, union sockaddr_union *, 516 union sockaddr_union *, u_int8_t); 517void puttdb(struct tdb *); 518void tdb_delete(struct tdb *); 519struct tdb *tdb_alloc(u_int); 520void tdb_free(struct tdb *); 521int tdb_init(struct tdb *, u_int16_t, struct ipsecinit *); 522int tdb_walk(u_int, int (*)(struct tdb *, void *, int), void *); 523 524/* XF_IP4 */ 525int ipe4_attach(void); 526int ipe4_init(struct tdb *, struct xformsw *, struct ipsecinit *); 527int ipe4_zeroize(struct tdb *); 528void ipe4_input(struct mbuf *, ...); 529void ipip_input(struct mbuf *, int, struct ifnet *, int); 530int ipip_output(struct mbuf *, struct tdb *, struct mbuf **, int, int); 531 532void ip4_input(struct mbuf *, ...); 533 534#ifdef INET6 535int ip4_input6(struct mbuf **, int *, int); 536#endif /* INET */ 537 538/* XF_AH */ 539int ah_attach(void); 540int ah_init(struct tdb *, struct xformsw *, struct ipsecinit *); 541int ah_zeroize(struct tdb *); 542int ah_input(struct mbuf *, struct tdb *, int, int); 543int ah_output(struct mbuf *, struct tdb *, struct mbuf **, int, int); 544int ah_sysctl(int *, u_int, void *, size_t *, void *, size_t); 545 546void ah4_input(struct mbuf *, ...); 547void *ah4_ctlinput(int, struct sockaddr *, u_int, void *); 548void *udpencap_ctlinput(int, struct sockaddr *, u_int, void *); 549 550#ifdef INET6 551int ah6_input(struct mbuf **, int *, int); 552#endif /* INET6 */ 553 554/* XF_ESP */ 555int esp_attach(void); 556int esp_init(struct tdb *, struct xformsw *, struct ipsecinit *); 557int esp_zeroize(struct tdb *); 558int esp_input(struct mbuf *, struct tdb *, int, int); 559int esp_output(struct mbuf *, struct tdb *, struct mbuf **, int, int); 560int esp_sysctl(int *, u_int, void *, size_t *, void *, size_t); 561 562void esp4_input(struct mbuf *, ...); 563void *esp4_ctlinput(int, struct sockaddr *, u_int, void *); 564 565#ifdef INET6 566int esp6_input(struct mbuf **, int *, int); 567#endif /* INET6 */ 568 569/* XF_IPCOMP */ 570int ipcomp_attach(void); 571int ipcomp_init(struct tdb *, struct xformsw *, struct ipsecinit *); 572int ipcomp_zeroize(struct tdb *); 573int ipcomp_input(struct mbuf *, struct tdb *, int, int); 574int ipcomp_output(struct mbuf *, struct tdb *, struct mbuf **, int, int); 575int ipcomp_sysctl(int *, u_int, void *, size_t *, void *, size_t); 576 577void ipcomp4_input(struct mbuf *, ...); 578 579#ifdef INET6 580int ipcomp6_input(struct mbuf **, int *, int); 581#endif /* INET6 */ 582 583/* XF_TCPSIGNATURE */ 584int tcp_signature_tdb_attach(void); 585int tcp_signature_tdb_init(struct tdb *, struct xformsw *, 586 struct ipsecinit *); 587int tcp_signature_tdb_zeroize(struct tdb *); 588int tcp_signature_tdb_input(struct mbuf *, struct tdb *, int, int); 589int tcp_signature_tdb_output(struct mbuf *, struct tdb *, struct mbuf **, 590 int, int); 591 592/* Replay window */ 593int checkreplaywindow(struct tdb *, u_int32_t, u_int32_t *, int); 594 595/* Packet processing */ 596int ipsp_process_packet(struct mbuf *, struct tdb *, int, int); 597int ipsp_process_done(struct mbuf *, struct tdb *); 598struct tdb *ipsp_spd_lookup(struct mbuf *, int, int, int *, int, 599 struct tdb *, struct inpcb *, u_int32_t); 600struct tdb *ipsp_spd_inp(struct mbuf *, int, int, int *, int, 601 struct tdb *, struct inpcb *, struct ipsec_policy *); 602int ipsp_is_unspecified(union sockaddr_union); 603int ipsp_ref_match(struct ipsec_ref *, struct ipsec_ref *); 604void ipsp_reffree(struct ipsec_ref *); 605void ipsp_skipcrypto_mark(struct tdb_ident *); 606void ipsp_skipcrypto_unmark(struct tdb_ident *); 607int ipsp_aux_match(struct tdb *, struct ipsec_ref *, struct ipsec_ref *, 608 struct ipsec_ref *, struct ipsec_ref *, struct sockaddr_encap *, 609 struct sockaddr_encap *); 610 611int ipsec_common_input(struct mbuf *, int, int, int, int, int); 612int ipsec_common_input_cb(struct mbuf *, struct tdb *, int, int, 613 struct m_tag *); 614int ipsec_delete_policy(struct ipsec_policy *); 615ssize_t ipsec_hdrsz(struct tdb *); 616void ipsec_adjust_mtu(struct mbuf *, u_int32_t); 617struct ipsec_policy *ipsec_add_policy(struct inpcb *, int, int); 618struct ipsec_acquire *ipsec_get_acquire(u_int32_t); 619 620#endif /* _KERNEL */ 621#endif /* _NETINET_IPSP_H_ */ 622