ip_ipsp.h revision 1.222
1/* $OpenBSD: ip_ipsp.h,v 1.222 2021/11/25 13:46:02 bluhm 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 } Sen; 117}; 118 119#define IPSP_DIRECTION_IN 0x1 120#define IPSP_DIRECTION_OUT 0x2 121 122struct ipsecstat { 123 uint64_t ipsec_tunnels; /* Number of active tunnels */ 124 uint64_t ipsec_prevtunnels; /* Past number of tunnels */ 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; /* No TDB was found */ 135 uint64_t ipsec_noxform; /* Crypto error */ 136 uint64_t ipsec_exctdb; /* TDBs with hardlimit excess */ 137}; 138 139struct tdb_data { 140 uint64_t tdd_ipackets; /* Input IPsec packets */ 141 uint64_t tdd_opackets; /* Output IPsec packets */ 142 uint64_t tdd_ibytes; /* Input bytes */ 143 uint64_t tdd_obytes; /* Output bytes */ 144 uint64_t tdd_idrops; /* Dropped on input */ 145 uint64_t tdd_odrops; /* Dropped on output */ 146 uint64_t tdd_idecompbytes; /* Input bytes, decompressed */ 147 uint64_t tdd_ouncompbytes; /* Output bytes, uncompressed */ 148}; 149 150#ifdef _KERNEL 151 152#include <sys/timeout.h> 153#include <sys/tree.h> 154#include <sys/queue.h> 155#include <net/radix.h> 156#include <sys/percpu.h> 157 158enum ipsec_counters { 159 ipsec_tunnels, 160 ipsec_prevtunnels, 161 ipsec_ipackets, 162 ipsec_opackets, 163 ipsec_ibytes, 164 ipsec_obytes, 165 ipsec_idecompbytes, 166 ipsec_ouncompbytes, 167 ipsec_idrops, 168 ipsec_odrops, 169 ipsec_crypto, 170 ipsec_notdb, 171 ipsec_noxform, 172 ipsec_exctdb, 173 ipsec_ncounters 174}; 175 176extern struct cpumem *ipseccounters; 177 178static inline void 179ipsecstat_inc(enum ipsec_counters c) 180{ 181 counters_inc(ipseccounters, c); 182} 183 184static inline void 185ipsecstat_dec(enum ipsec_counters c) 186{ 187 counters_dec(ipseccounters, c); 188} 189 190static inline void 191ipsecstat_add(enum ipsec_counters c, uint64_t v) 192{ 193 counters_add(ipseccounters, c, v); 194} 195 196static inline void 197ipsecstat_pkt(enum ipsec_counters p, enum ipsec_counters b, uint64_t v) 198{ 199 counters_pkt(ipseccounters, p, b, v); 200} 201 202struct m_tag; 203 204#define sen_data Sen.Data 205#define sen_ip_src Sen.Sip4.Src 206#define sen_ip_dst Sen.Sip4.Dst 207#define sen_proto Sen.Sip4.Proto 208#define sen_sport Sen.Sip4.Sport 209#define sen_dport Sen.Sip4.Dport 210#define sen_direction Sen.Sip4.Direction 211#define sen_ip6_src Sen.Sip6.Src 212#define sen_ip6_dst Sen.Sip6.Dst 213#define sen_ip6_proto Sen.Sip6.Proto 214#define sen_ip6_sport Sen.Sip6.Sport 215#define sen_ip6_dport Sen.Sip6.Dport 216#define sen_ip6_direction Sen.Sip6.Direction 217 218/* 219 * The "type" is really part of the address as far as the routing 220 * system is concerned. By using only one bit in the type field 221 * for each type, we sort-of make sure that different types of 222 * encapsulation addresses won't be matched against the wrong type. 223 * 224 */ 225 226#define SENT_IP4 0x0001 /* data is two struct in_addr */ 227#define SENT_IP6 0x0002 228 229#define SENT_LEN sizeof(struct sockaddr_encap) 230 231struct ipsec_id { 232 u_int16_t type; /* Subtype of data */ 233 int16_t len; /* Length of data following */ 234}; 235 236struct ipsec_ids { 237 LIST_ENTRY(ipsec_ids) id_gc_list; 238 RBT_ENTRY(ipsec_ids) id_node_id; 239 RBT_ENTRY(ipsec_ids) id_node_flow; 240 struct ipsec_id *id_local; 241 struct ipsec_id *id_remote; 242 u_int32_t id_flow; 243 int id_refcount; 244 u_int id_gc_ttl; 245}; 246RBT_HEAD(ipsec_ids_flows, ipsec_ids); 247RBT_HEAD(ipsec_ids_tree, ipsec_ids); 248 249struct ipsec_acquire { 250 union sockaddr_union ipa_addr; 251 u_int32_t ipa_seq; 252 struct sockaddr_encap ipa_info; 253 struct sockaddr_encap ipa_mask; 254 struct timeout ipa_timeout; 255 struct ipsec_policy *ipa_policy; 256 TAILQ_ENTRY(ipsec_acquire) ipa_ipo_next; 257 TAILQ_ENTRY(ipsec_acquire) ipa_next; 258}; 259 260struct ipsec_policy { 261 struct radix_node ipo_nodes[2]; /* radix tree glue */ 262 struct sockaddr_encap ipo_addr; 263 struct sockaddr_encap ipo_mask; 264 265 union sockaddr_union ipo_src; /* Local address to use */ 266 union sockaddr_union ipo_dst; /* Remote gateway -- if it's zeroed: 267 * - on output, we try to 268 * contact the remote host 269 * directly (if needed). 270 * - on input, we accept on if 271 * the inner source is the 272 * same as the outer source 273 * address, or if transport 274 * mode was used. 275 */ 276 277 u_int64_t ipo_last_searched; /* Timestamp of last lookup */ 278 279 u_int8_t ipo_flags; /* See IPSP_POLICY_* definitions */ 280 u_int8_t ipo_type; /* USE/ACQUIRE/... */ 281 u_int8_t ipo_sproto; /* ESP/AH; if zero, use system dflts */ 282 u_int ipo_rdomain; 283 284 int ipo_ref_count; 285 286 struct tdb *ipo_tdb; /* Cached entry */ 287 288 struct ipsec_ids *ipo_ids; 289 290 TAILQ_HEAD(ipo_acquires_head, ipsec_acquire) ipo_acquires; /* List of acquires */ 291 TAILQ_ENTRY(ipsec_policy) ipo_tdb_next; /* List TDB policies */ 292 TAILQ_ENTRY(ipsec_policy) ipo_list; /* List of all policies */ 293}; 294 295#define IPSP_POLICY_NONE 0x0000 /* No flags set */ 296#define IPSP_POLICY_STATIC 0x0002 /* Static policy */ 297 298#define IPSP_IPSEC_USE 0 /* Use if existing, don't acquire */ 299#define IPSP_IPSEC_ACQUIRE 1 /* Try acquire, let packet through */ 300#define IPSP_IPSEC_REQUIRE 2 /* Require SA */ 301#define IPSP_PERMIT 3 /* Permit traffic through */ 302#define IPSP_DENY 4 /* Deny traffic */ 303#define IPSP_IPSEC_DONTACQ 5 /* Require, but don't acquire */ 304 305/* Identity types */ 306#define IPSP_IDENTITY_NONE 0 307#define IPSP_IDENTITY_PREFIX 1 308#define IPSP_IDENTITY_FQDN 2 309#define IPSP_IDENTITY_USERFQDN 3 310#define IPSP_IDENTITY_ASN1_DN 4 311 312struct tdb { /* tunnel descriptor block */ 313 /* 314 * Each TDB is on three hash tables: one keyed on dst/spi/sproto, 315 * one keyed on dst/sproto, and one keyed on src/sproto. The first 316 * is used for finding a specific TDB, the second for finding TDBs 317 * for outgoing policy matching, and the third for incoming 318 * policy matching. The following three fields maintain the hash 319 * queues in those three tables. 320 */ 321 struct tdb *tdb_hnext; /* dst/spi/sproto table */ 322 struct tdb *tdb_dnext; /* dst/sproto table */ 323 struct tdb *tdb_snext; /* src/sproto table */ 324 struct tdb *tdb_inext; 325 struct tdb *tdb_onext; 326 327 struct refcnt tdb_refcnt; 328 329 const struct xformsw *tdb_xform; /* Transform to use */ 330 const struct enc_xform *tdb_encalgxform; /* Enc algorithm */ 331 const struct auth_hash *tdb_authalgxform; /* Auth algorithm */ 332 const struct comp_algo *tdb_compalgxform; /* Compression algo */ 333 334#define TDBF_UNIQUE 0x00001 /* This should not be used by others */ 335#define TDBF_TIMER 0x00002 /* Absolute expiration timer in use */ 336#define TDBF_BYTES 0x00004 /* Check the byte counters */ 337#define TDBF_ALLOCATIONS 0x00008 /* Check the flows counters */ 338#define TDBF_INVALID 0x00010 /* This SPI is not valid yet/anymore */ 339#define TDBF_FIRSTUSE 0x00020 /* Expire after first use */ 340#define TDBF_DELETED 0x00040 /* This TDB has already been deleted */ 341#define TDBF_SOFT_TIMER 0x00080 /* Soft expiration */ 342#define TDBF_SOFT_BYTES 0x00100 /* Soft expiration */ 343#define TDBF_SOFT_ALLOCATIONS 0x00200 /* Soft expiration */ 344#define TDBF_SOFT_FIRSTUSE 0x00400 /* Soft expiration */ 345#define TDBF_PFS 0x00800 /* Ask for PFS from Key Mgmt. */ 346#define TDBF_TUNNELING 0x01000 /* Force IP-IP encapsulation */ 347#define TDBF_USEDTUNNEL 0x10000 /* Appended a tunnel header in past */ 348#define TDBF_UDPENCAP 0x20000 /* UDP encapsulation */ 349#define TDBF_PFSYNC 0x40000 /* TDB will be synced */ 350#define TDBF_PFSYNC_RPL 0x80000 /* Replay counter should be bumped */ 351#define TDBF_ESN 0x100000 /* 64-bit sequence numbers (ESN) */ 352 353#define TDBF_BITS ("\20" \ 354 "\1UNIQUE\2TIMER\3BYTES\4ALLOCATIONS" \ 355 "\5INVALID\6FIRSTUSE\7DELETED\10SOFT_TIMER" \ 356 "\11SOFT_BYTES\12SOFT_ALLOCATIONS\13SOFT_FIRSTUSE\14PFS" \ 357 "\15TUNNELING" \ 358 "\21USEDTUNNEL\22UDPENCAP\23PFSYNC\24PFSYNC_RPL" \ 359 "\25ESN") 360 361 u_int32_t tdb_flags; /* Flags related to this TDB */ 362 363 struct timeout tdb_timer_tmo; 364 struct timeout tdb_first_tmo; 365 struct timeout tdb_stimer_tmo; 366 struct timeout tdb_sfirst_tmo; 367 368 u_int32_t tdb_seq; /* Tracking number for PFKEY */ 369 u_int32_t tdb_exp_allocations; /* Expire after so many flows */ 370 u_int32_t tdb_soft_allocations; /* Expiration warning */ 371 u_int32_t tdb_cur_allocations; /* Total number of allocs */ 372 373 u_int64_t tdb_exp_bytes; /* Expire after so many bytes passed */ 374 u_int64_t tdb_soft_bytes; /* Expiration warning */ 375 u_int64_t tdb_cur_bytes; /* Current count of bytes */ 376 377 u_int64_t tdb_exp_timeout; /* When does the SPI expire */ 378 u_int64_t tdb_soft_timeout; /* Send soft-expire warning */ 379 u_int64_t tdb_established; /* When was SPI established */ 380 381 u_int64_t tdb_first_use; /* When was it first used */ 382 u_int64_t tdb_soft_first_use; /* Soft warning */ 383 u_int64_t tdb_exp_first_use; /* Expire if tdb_first_use + 384 * tdb_exp_first_use <= curtime 385 */ 386 387 u_int64_t tdb_last_used; /* When was this SA last used */ 388 u_int64_t tdb_last_marked;/* Last SKIPCRYPTO status change */ 389 390 struct tdb_data tdb_data; /* stats about this TDB */ 391 u_int64_t tdb_cryptoid; /* Crypto session ID */ 392 393 u_int32_t tdb_spi; /* SPI */ 394 u_int16_t tdb_amxkeylen; /* Raw authentication key length */ 395 u_int16_t tdb_emxkeylen; /* Raw encryption key length */ 396 u_int16_t tdb_ivlen; /* IV length */ 397 u_int8_t tdb_sproto; /* IPsec protocol */ 398 u_int8_t tdb_wnd; /* Replay window */ 399 u_int8_t tdb_satype; /* SA type (RFC2367, PF_KEY) */ 400 u_int8_t tdb_updates; /* pfsync update counter */ 401 402 union sockaddr_union tdb_dst; /* Destination address */ 403 union sockaddr_union tdb_src; /* Source address */ 404 405 u_int8_t *tdb_amxkey; /* Raw authentication key */ 406 u_int8_t *tdb_emxkey; /* Raw encryption key */ 407 408#define TDB_REPLAYWASTE 32 409#define TDB_REPLAYMAX (2100+TDB_REPLAYWASTE) 410 411 u_int64_t tdb_rpl; /* Replay counter */ 412 u_int32_t tdb_seen[howmany(TDB_REPLAYMAX, 32)]; /* Anti-replay window */ 413 414 u_int8_t tdb_iv[4]; /* Used for HALF-IV ESP */ 415 416 struct ipsec_ids *tdb_ids; /* Src/Dst ID for this SA */ 417 int tdb_ids_swapped; /* XXX */ 418 419 u_int32_t tdb_mtu; /* MTU at this point in the chain */ 420 u_int64_t tdb_mtutimeout; /* When to ignore this entry */ 421 422 u_int16_t tdb_udpencap_port; /* Peer UDP port */ 423 424 u_int16_t tdb_tag; /* Packet filter tag */ 425 u_int32_t tdb_tap; /* Alternate enc(4) interface */ 426 427 u_int tdb_rdomain; /* Routing domain */ 428 u_int tdb_rdomain_post; /* Change domain */ 429 430 struct sockaddr_encap tdb_filter; /* What traffic is acceptable */ 431 struct sockaddr_encap tdb_filtermask; /* And the mask */ 432 433 TAILQ_HEAD(tdb_policy_head, ipsec_policy) tdb_policy_head; 434 TAILQ_ENTRY(tdb) tdb_sync_entry; 435}; 436#define tdb_ipackets tdb_data.tdd_ipackets 437#define tdb_opackets tdb_data.tdd_opackets 438#define tdb_ibytes tdb_data.tdd_ibytes 439#define tdb_obytes tdb_data.tdd_obytes 440#define tdb_idrops tdb_data.tdd_idrops 441#define tdb_odrops tdb_data.tdd_odrops 442#define tdb_idecompbytes tdb_data.tdd_idecompbytes 443#define tdb_ouncompbytes tdb_data.tdd_ouncompbytes 444 445 446struct tdb_ident { 447 u_int32_t spi; 448 union sockaddr_union dst; 449 u_int8_t proto; 450 u_int rdomain; 451}; 452 453struct tdb_crypto { 454 union sockaddr_union tc_dst; 455 u_int64_t tc_rpl; 456 u_int32_t tc_spi; 457 int tc_protoff; 458 int tc_skip; 459 u_int tc_rdomain; 460 u_int8_t tc_proto; 461}; 462 463struct ipsecinit { 464 u_int8_t *ii_enckey; 465 u_int8_t *ii_authkey; 466 u_int16_t ii_enckeylen; 467 u_int16_t ii_authkeylen; 468 u_int8_t ii_encalg; 469 u_int8_t ii_authalg; 470 u_int8_t ii_compalg; 471}; 472 473/* xform IDs */ 474#define XF_IP4 1 /* IP inside IP */ 475#define XF_AH 2 /* AH */ 476#define XF_ESP 3 /* ESP */ 477#define XF_TCPSIGNATURE 5 /* TCP MD5 Signature option, RFC 2358 */ 478#define XF_IPCOMP 6 /* IPCOMP */ 479 480/* xform attributes */ 481#define XFT_AUTH 0x0001 482#define XFT_CONF 0x0100 483#define XFT_COMP 0x1000 484 485#define IPSEC_ZEROES_SIZE 256 /* Larger than an IP6 extension hdr. */ 486 487struct xformsw { 488 u_short xf_type; /* Unique ID of xform */ 489 u_short xf_flags; /* flags (see below) */ 490 char *xf_name; /* human-readable name */ 491 int (*xf_attach)(void); /* called at config time */ 492 int (*xf_init)(struct tdb *, const struct xformsw *, 493 struct ipsecinit *); 494 int (*xf_zeroize)(struct tdb *); /* termination */ 495 int (*xf_input)(struct mbuf **, struct tdb *, int, int); 496 int (*xf_output)(struct mbuf *, struct tdb *, int, int); 497}; 498 499extern int ipsec_in_use; 500extern u_int64_t ipsec_last_added; 501extern int encdebug; /* enable message reporting */ 502extern struct pool tdb_pool; 503 504extern int ipsec_keep_invalid; /* lifetime of embryonic SAs (in sec) */ 505extern int ipsec_require_pfs; /* use Perfect Forward Secrecy */ 506extern int ipsec_expire_acquire; /* wait for security assoc. (in sec) */ 507extern int ipsec_soft_allocations; /* flows/SA before renegotiation */ 508extern int ipsec_exp_allocations; /* num. of flows/SA before it expires */ 509extern int ipsec_soft_bytes; /* bytes/SA before renegotiation */ 510extern int ipsec_exp_bytes; /* num of bytes/SA before it expires */ 511extern int ipsec_soft_timeout; /* seconds/SA before renegotiation */ 512extern int ipsec_exp_timeout; /* seconds/SA before it expires */ 513extern int ipsec_soft_first_use; /* seconds between 1st asso & renego */ 514extern int ipsec_exp_first_use; /* seconds between 1st asso & expire */ 515 516/* 517 * Names for IPsec sysctl objects 518 */ 519#define IPSEC_ENCDEBUG IPCTL_ENCDEBUG /* 12 */ 520#define IPSEC_STATS IPCTL_IPSEC_STATS /* 13 */ 521#define IPSEC_EXPIRE_ACQUIRE IPCTL_IPSEC_EXPIRE_ACQUIRE /* 14 */ 522#define IPSEC_EMBRYONIC_SA_TIMEOUT IPCTL_IPSEC_EMBRYONIC_SA_TIMEOUT/* 15 */ 523#define IPSEC_REQUIRE_PFS IPCTL_IPSEC_REQUIRE_PFS /* 16 */ 524#define IPSEC_SOFT_ALLOCATIONS IPCTL_IPSEC_SOFT_ALLOCATIONS /* 17 */ 525#define IPSEC_ALLOCATIONS IPCTL_IPSEC_ALLOCATIONS /* 18 */ 526#define IPSEC_SOFT_BYTES IPCTL_IPSEC_SOFT_BYTES /* 19 */ 527#define IPSEC_BYTES IPCTL_IPSEC_BYTES /* 20 */ 528#define IPSEC_TIMEOUT IPCTL_IPSEC_TIMEOUT /* 21 */ 529#define IPSEC_SOFT_TIMEOUT IPCTL_IPSEC_SOFT_TIMEOUT /* 22 */ 530#define IPSEC_SOFT_FIRSTUSE IPCTL_IPSEC_SOFT_FIRSTUSE /* 23 */ 531#define IPSEC_FIRSTUSE IPCTL_IPSEC_FIRSTUSE /* 24 */ 532#define IPSEC_MAXID 25 533 534extern char ipsec_def_enc[]; 535extern char ipsec_def_auth[]; 536extern char ipsec_def_comp[]; 537 538extern TAILQ_HEAD(ipsec_policy_head, ipsec_policy) ipsec_policy_head; 539 540struct cryptop; 541 542/* Misc. */ 543const char *ipsp_address(union sockaddr_union *, char *, socklen_t); 544 545/* SPD tables */ 546struct radix_node_head *spd_table_add(unsigned int); 547struct radix_node_head *spd_table_get(unsigned int); 548int spd_table_walk(unsigned int, 549 int (*walker)(struct ipsec_policy *, void *, unsigned int), void *); 550 551/* TDB management routines */ 552uint32_t reserve_spi(u_int, u_int32_t, u_int32_t, union sockaddr_union *, 553 union sockaddr_union *, u_int8_t, int *); 554struct tdb *gettdb_dir(u_int, u_int32_t, union sockaddr_union *, u_int8_t, int); 555#define gettdb(a,b,c,d) gettdb_dir((a),(b),(c),(d),0) 556#define gettdb_rev(a,b,c,d) gettdb_dir((a),(b),(c),(d),1) 557struct tdb *gettdbbydst(u_int, union sockaddr_union *, u_int8_t, 558 struct ipsec_ids *, 559 struct sockaddr_encap *, struct sockaddr_encap *); 560struct tdb *gettdbbysrc(u_int, union sockaddr_union *, u_int8_t, 561 struct ipsec_ids *, 562 struct sockaddr_encap *, struct sockaddr_encap *); 563struct tdb *gettdbbysrcdst_dir(u_int, u_int32_t, union sockaddr_union *, 564 union sockaddr_union *, u_int8_t, int); 565#define gettdbbysrcdst(a,b,c,d,e) gettdbbysrcdst_dir((a),(b),(c),(d),(e),0) 566#define gettdbbysrcdst_rev(a,b,c,d,e) gettdbbysrcdst_dir((a),(b),(c),(d),(e),1) 567void puttdb(struct tdb *); 568void tdb_delete(struct tdb *); 569struct tdb *tdb_alloc(u_int); 570struct tdb *tdb_ref(struct tdb *); 571void tdb_unref(struct tdb *); 572void tdb_free(struct tdb *); 573int tdb_init(struct tdb *, u_int16_t, struct ipsecinit *); 574void tdb_unlink(struct tdb *); 575void tdb_unlink_locked(struct tdb *); 576void tdb_unbundle(struct tdb *); 577void tdb_deltimeouts(struct tdb *); 578int tdb_walk(u_int, int (*)(struct tdb *, void *, int), void *); 579void tdb_printit(void *, int, int (*)(const char *, ...)); 580 581/* XF_IP4 */ 582int ipe4_attach(void); 583int ipe4_init(struct tdb *, const struct xformsw *, struct ipsecinit *); 584int ipe4_zeroize(struct tdb *); 585int ipe4_input(struct mbuf **, struct tdb *, int, int); 586 587/* XF_AH */ 588int ah_attach(void); 589int ah_init(struct tdb *, const struct xformsw *, struct ipsecinit *); 590int ah_zeroize(struct tdb *); 591int ah_input(struct mbuf **, struct tdb *, int, int); 592int ah_output(struct mbuf *, struct tdb *, int, int); 593int ah_sysctl(int *, u_int, void *, size_t *, void *, size_t); 594 595int ah46_input(struct mbuf **, int *, int, int); 596void ah4_ctlinput(int, struct sockaddr *, u_int, void *); 597void udpencap_ctlinput(int, struct sockaddr *, u_int, void *); 598 599/* XF_ESP */ 600int esp_attach(void); 601int esp_init(struct tdb *, const struct xformsw *, struct ipsecinit *); 602int esp_zeroize(struct tdb *); 603int esp_input(struct mbuf **, struct tdb *, int, int); 604int esp_output(struct mbuf *, struct tdb *, int, int); 605int esp_sysctl(int *, u_int, void *, size_t *, void *, size_t); 606 607int esp46_input(struct mbuf **, int *, int, int); 608void esp4_ctlinput(int, struct sockaddr *, u_int, void *); 609 610/* XF_IPCOMP */ 611int ipcomp_attach(void); 612int ipcomp_init(struct tdb *, const struct xformsw *, struct ipsecinit *); 613int ipcomp_zeroize(struct tdb *); 614int ipcomp_input(struct mbuf **, struct tdb *, int, int); 615int ipcomp_output(struct mbuf *, struct tdb *, int, int); 616int ipcomp_sysctl(int *, u_int, void *, size_t *, void *, size_t); 617int ipcomp46_input(struct mbuf **, int *, int, int); 618 619/* XF_TCPSIGNATURE */ 620int tcp_signature_tdb_attach(void); 621int tcp_signature_tdb_init(struct tdb *, const struct xformsw *, 622 struct ipsecinit *); 623int tcp_signature_tdb_zeroize(struct tdb *); 624int tcp_signature_tdb_input(struct mbuf **, struct tdb *, int, int); 625int tcp_signature_tdb_output(struct mbuf *, struct tdb *, int, int); 626 627/* Replay window */ 628int checkreplaywindow(struct tdb *, u_int64_t, u_int32_t, u_int32_t *, int); 629 630/* Packet processing */ 631int ipsp_process_packet(struct mbuf *, struct tdb *, int, int); 632int ipsp_process_done(struct mbuf *, struct tdb *); 633struct tdb *ipsp_spd_lookup(struct mbuf *, int, int, int *, int, 634 struct tdb *, struct inpcb *, u_int32_t); 635struct tdb *ipsp_spd_inp(struct mbuf *, int, int, int *, int, 636 struct tdb *, struct inpcb *, struct ipsec_policy *); 637int ipsp_is_unspecified(union sockaddr_union); 638int ipsp_aux_match(struct tdb *, struct ipsec_ids *, 639 struct sockaddr_encap *, struct sockaddr_encap *); 640int ipsp_ids_match(struct ipsec_ids *, struct ipsec_ids *); 641struct ipsec_ids *ipsp_ids_insert(struct ipsec_ids *); 642struct ipsec_ids *ipsp_ids_lookup(u_int32_t); 643void ipsp_ids_free(struct ipsec_ids *); 644 645void ipsp_init(void); 646void ipsec_init(void); 647int ipsec_sysctl(int *, u_int, void *, size_t *, void *, size_t); 648int ipsec_common_input(struct mbuf **, int, int, int, int, int); 649int ipsec_common_input_cb(struct mbuf **, struct tdb *, int, int); 650int ipsec_input_disabled(struct mbuf **, int *, int, int); 651int ipsec_protoff(struct mbuf *, int, int); 652int ipsec_delete_policy(struct ipsec_policy *); 653ssize_t ipsec_hdrsz(struct tdb *); 654void ipsec_adjust_mtu(struct mbuf *, u_int32_t); 655void ipsec_set_mtu(struct tdb *, u_int32_t); 656struct ipsec_acquire *ipsec_get_acquire(u_int32_t); 657int ipsec_forward_check(struct mbuf *, int, int); 658int ipsec_local_check(struct mbuf *, int, int, int); 659 660#endif /* _KERNEL */ 661#endif /* _NETINET_IPSP_H_ */ 662