ip_ipsp.h revision 1.214
1/* $OpenBSD: ip_ipsp.h,v 1.214 2021/10/24 17:08:27 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; /* Expired while in crypto */ 135 uint64_t ipsec_noxform; /* Crypto error */ 136}; 137 138struct tdb_data { 139 uint64_t tdd_ipackets; /* Input IPsec packets */ 140 uint64_t tdd_opackets; /* Output IPsec packets */ 141 uint64_t tdd_ibytes; /* Input bytes */ 142 uint64_t tdd_obytes; /* Output bytes */ 143 uint64_t tdd_idrops; /* Dropped on input */ 144 uint64_t tdd_odrops; /* Dropped on output */ 145 uint64_t tdd_idecompbytes; /* Input bytes, decompressed */ 146 uint64_t tdd_ouncompbytes; /* Output bytes, uncompressed */ 147}; 148 149#ifdef _KERNEL 150 151#include <sys/timeout.h> 152#include <sys/tree.h> 153#include <sys/queue.h> 154#include <net/radix.h> 155#include <sys/percpu.h> 156 157enum ipsec_counters { 158 ipsec_tunnels, 159 ipsec_prevtunnels, 160 ipsec_ipackets, 161 ipsec_opackets, 162 ipsec_ibytes, 163 ipsec_obytes, 164 ipsec_idecompbytes, 165 ipsec_ouncompbytes, 166 ipsec_idrops, 167 ipsec_odrops, 168 ipsec_crypto, 169 ipsec_notdb, 170 ipsec_noxform, 171 ipsec_ncounters 172}; 173 174extern struct cpumem *ipseccounters; 175 176static inline void 177ipsecstat_inc(enum ipsec_counters c) 178{ 179 counters_inc(ipseccounters, c); 180} 181 182static inline void 183ipsecstat_dec(enum ipsec_counters c) 184{ 185 counters_dec(ipseccounters, c); 186} 187 188static inline void 189ipsecstat_add(enum ipsec_counters c, uint64_t v) 190{ 191 counters_add(ipseccounters, c, v); 192} 193 194static inline void 195ipsecstat_pkt(enum ipsec_counters p, enum ipsec_counters b, uint64_t v) 196{ 197 counters_pkt(ipseccounters, p, b, v); 198} 199 200struct m_tag; 201 202#define sen_data Sen.Data 203#define sen_ip_src Sen.Sip4.Src 204#define sen_ip_dst Sen.Sip4.Dst 205#define sen_proto Sen.Sip4.Proto 206#define sen_sport Sen.Sip4.Sport 207#define sen_dport Sen.Sip4.Dport 208#define sen_direction Sen.Sip4.Direction 209#define sen_ip6_src Sen.Sip6.Src 210#define sen_ip6_dst Sen.Sip6.Dst 211#define sen_ip6_proto Sen.Sip6.Proto 212#define sen_ip6_sport Sen.Sip6.Sport 213#define sen_ip6_dport Sen.Sip6.Dport 214#define sen_ip6_direction Sen.Sip6.Direction 215 216/* 217 * The "type" is really part of the address as far as the routing 218 * system is concerned. By using only one bit in the type field 219 * for each type, we sort-of make sure that different types of 220 * encapsulation addresses won't be matched against the wrong type. 221 * 222 */ 223 224#define SENT_IP4 0x0001 /* data is two struct in_addr */ 225#define SENT_IP6 0x0002 226 227#define SENT_LEN sizeof(struct sockaddr_encap) 228 229struct ipsec_id { 230 u_int16_t type; /* Subtype of data */ 231 int16_t len; /* Length of data following */ 232}; 233 234struct ipsec_ids { 235 LIST_ENTRY(ipsec_ids) id_gc_list; 236 RBT_ENTRY(ipsec_ids) id_node_id; 237 RBT_ENTRY(ipsec_ids) id_node_flow; 238 struct ipsec_id *id_local; 239 struct ipsec_id *id_remote; 240 u_int32_t id_flow; 241 int id_refcount; 242 u_int id_gc_ttl; 243}; 244RBT_HEAD(ipsec_ids_flows, ipsec_ids); 245RBT_HEAD(ipsec_ids_tree, ipsec_ids); 246 247struct ipsec_acquire { 248 union sockaddr_union ipa_addr; 249 u_int32_t ipa_seq; 250 struct sockaddr_encap ipa_info; 251 struct sockaddr_encap ipa_mask; 252 struct timeout ipa_timeout; 253 struct ipsec_policy *ipa_policy; 254 TAILQ_ENTRY(ipsec_acquire) ipa_ipo_next; 255 TAILQ_ENTRY(ipsec_acquire) ipa_next; 256}; 257 258struct ipsec_policy { 259 struct radix_node ipo_nodes[2]; /* radix tree glue */ 260 struct sockaddr_encap ipo_addr; 261 struct sockaddr_encap ipo_mask; 262 263 union sockaddr_union ipo_src; /* Local address to use */ 264 union sockaddr_union ipo_dst; /* Remote gateway -- if it's zeroed: 265 * - on output, we try to 266 * contact the remote host 267 * directly (if needed). 268 * - on input, we accept on if 269 * the inner source is the 270 * same as the outer source 271 * address, or if transport 272 * mode was used. 273 */ 274 275 u_int64_t ipo_last_searched; /* Timestamp of last lookup */ 276 277 u_int8_t ipo_flags; /* See IPSP_POLICY_* definitions */ 278 u_int8_t ipo_type; /* USE/ACQUIRE/... */ 279 u_int8_t ipo_sproto; /* ESP/AH; if zero, use system dflts */ 280 u_int ipo_rdomain; 281 282 int ipo_ref_count; 283 284 struct tdb *ipo_tdb; /* Cached entry */ 285 286 struct ipsec_ids *ipo_ids; 287 288 TAILQ_HEAD(ipo_acquires_head, ipsec_acquire) ipo_acquires; /* List of acquires */ 289 TAILQ_ENTRY(ipsec_policy) ipo_tdb_next; /* List TDB policies */ 290 TAILQ_ENTRY(ipsec_policy) ipo_list; /* List of all policies */ 291}; 292 293#define IPSP_POLICY_NONE 0x0000 /* No flags set */ 294#define IPSP_POLICY_STATIC 0x0002 /* Static policy */ 295 296#define IPSP_IPSEC_USE 0 /* Use if existing, don't acquire */ 297#define IPSP_IPSEC_ACQUIRE 1 /* Try acquire, let packet through */ 298#define IPSP_IPSEC_REQUIRE 2 /* Require SA */ 299#define IPSP_PERMIT 3 /* Permit traffic through */ 300#define IPSP_DENY 4 /* Deny traffic */ 301#define IPSP_IPSEC_DONTACQ 5 /* Require, but don't acquire */ 302 303/* Identity types */ 304#define IPSP_IDENTITY_NONE 0 305#define IPSP_IDENTITY_PREFIX 1 306#define IPSP_IDENTITY_FQDN 2 307#define IPSP_IDENTITY_USERFQDN 3 308#define IPSP_IDENTITY_ASN1_DN 4 309 310struct tdb { /* tunnel descriptor block */ 311 /* 312 * Each TDB is on three hash tables: one keyed on dst/spi/sproto, 313 * one keyed on dst/sproto, and one keyed on src/sproto. The first 314 * is used for finding a specific TDB, the second for finding TDBs 315 * for outgoing policy matching, and the third for incoming 316 * policy matching. The following three fields maintain the hash 317 * queues in those three tables. 318 */ 319 struct tdb *tdb_hnext; /* dst/spi/sproto table */ 320 struct tdb *tdb_dnext; /* dst/sproto table */ 321 struct tdb *tdb_snext; /* src/sproto table */ 322 struct tdb *tdb_inext; 323 struct tdb *tdb_onext; 324 325 const struct xformsw *tdb_xform; /* Transform to use */ 326 const struct enc_xform *tdb_encalgxform; /* Enc algorithm */ 327 const struct auth_hash *tdb_authalgxform; /* Auth algorithm */ 328 const struct comp_algo *tdb_compalgxform; /* Compression algo */ 329 330#define TDBF_UNIQUE 0x00001 /* This should not be used by others */ 331#define TDBF_TIMER 0x00002 /* Absolute expiration timer in use */ 332#define TDBF_BYTES 0x00004 /* Check the byte counters */ 333#define TDBF_ALLOCATIONS 0x00008 /* Check the flows counters */ 334#define TDBF_INVALID 0x00010 /* This SPI is not valid yet/anymore */ 335#define TDBF_FIRSTUSE 0x00020 /* Expire after first use */ 336#define TDBF_SOFT_TIMER 0x00080 /* Soft expiration */ 337#define TDBF_SOFT_BYTES 0x00100 /* Soft expiration */ 338#define TDBF_SOFT_ALLOCATIONS 0x00200 /* Soft expiration */ 339#define TDBF_SOFT_FIRSTUSE 0x00400 /* Soft expiration */ 340#define TDBF_PFS 0x00800 /* Ask for PFS from Key Mgmt. */ 341#define TDBF_TUNNELING 0x01000 /* Force IP-IP encapsulation */ 342#define TDBF_USEDTUNNEL 0x10000 /* Appended a tunnel header in past */ 343#define TDBF_UDPENCAP 0x20000 /* UDP encapsulation */ 344#define TDBF_PFSYNC 0x40000 /* TDB will be synced */ 345#define TDBF_PFSYNC_RPL 0x80000 /* Replay counter should be bumped */ 346#define TDBF_ESN 0x100000 /* 64-bit sequence numbers (ESN) */ 347 348 u_int32_t tdb_flags; /* Flags related to this TDB */ 349 350 struct timeout tdb_timer_tmo; 351 struct timeout tdb_first_tmo; 352 struct timeout tdb_stimer_tmo; 353 struct timeout tdb_sfirst_tmo; 354 355 u_int32_t tdb_seq; /* Tracking number for PFKEY */ 356 u_int32_t tdb_exp_allocations; /* Expire after so many flows */ 357 u_int32_t tdb_soft_allocations; /* Expiration warning */ 358 u_int32_t tdb_cur_allocations; /* Total number of allocs */ 359 360 u_int64_t tdb_exp_bytes; /* Expire after so many bytes passed */ 361 u_int64_t tdb_soft_bytes; /* Expiration warning */ 362 u_int64_t tdb_cur_bytes; /* Current count of bytes */ 363 364 u_int64_t tdb_exp_timeout; /* When does the SPI expire */ 365 u_int64_t tdb_soft_timeout; /* Send soft-expire warning */ 366 u_int64_t tdb_established; /* When was SPI established */ 367 368 u_int64_t tdb_first_use; /* When was it first used */ 369 u_int64_t tdb_soft_first_use; /* Soft warning */ 370 u_int64_t tdb_exp_first_use; /* Expire if tdb_first_use + 371 * tdb_exp_first_use <= curtime 372 */ 373 374 u_int64_t tdb_last_used; /* When was this SA last used */ 375 u_int64_t tdb_last_marked;/* Last SKIPCRYPTO status change */ 376 377 struct tdb_data tdb_data; /* stats about this TDB */ 378 u_int64_t tdb_cryptoid; /* Crypto session ID */ 379 380 u_int32_t tdb_spi; /* SPI */ 381 u_int16_t tdb_amxkeylen; /* Raw authentication key length */ 382 u_int16_t tdb_emxkeylen; /* Raw encryption key length */ 383 u_int16_t tdb_ivlen; /* IV length */ 384 u_int8_t tdb_sproto; /* IPsec protocol */ 385 u_int8_t tdb_wnd; /* Replay window */ 386 u_int8_t tdb_satype; /* SA type (RFC2367, PF_KEY) */ 387 u_int8_t tdb_updates; /* pfsync update counter */ 388 389 union sockaddr_union tdb_dst; /* Destination address */ 390 union sockaddr_union tdb_src; /* Source address */ 391 392 u_int8_t *tdb_amxkey; /* Raw authentication key */ 393 u_int8_t *tdb_emxkey; /* Raw encryption key */ 394 395#define TDB_REPLAYWASTE 32 396#define TDB_REPLAYMAX (2100+TDB_REPLAYWASTE) 397 398 u_int64_t tdb_rpl; /* Replay counter */ 399 u_int32_t tdb_seen[howmany(TDB_REPLAYMAX, 32)]; /* Anti-replay window */ 400 401 u_int8_t tdb_iv[4]; /* Used for HALF-IV ESP */ 402 403 struct ipsec_ids *tdb_ids; /* Src/Dst ID for this SA */ 404 int tdb_ids_swapped; /* XXX */ 405 406 u_int32_t tdb_mtu; /* MTU at this point in the chain */ 407 u_int64_t tdb_mtutimeout; /* When to ignore this entry */ 408 409 u_int16_t tdb_udpencap_port; /* Peer UDP port */ 410 411 u_int16_t tdb_tag; /* Packet filter tag */ 412 u_int32_t tdb_tap; /* Alternate enc(4) interface */ 413 414 u_int tdb_rdomain; /* Routing domain */ 415 u_int tdb_rdomain_post; /* Change domain */ 416 417 struct sockaddr_encap tdb_filter; /* What traffic is acceptable */ 418 struct sockaddr_encap tdb_filtermask; /* And the mask */ 419 420 TAILQ_HEAD(tdb_policy_head, ipsec_policy) tdb_policy_head; 421 TAILQ_ENTRY(tdb) tdb_sync_entry; 422}; 423#define tdb_ipackets tdb_data.tdd_ipackets 424#define tdb_opackets tdb_data.tdd_opackets 425#define tdb_ibytes tdb_data.tdd_ibytes 426#define tdb_obytes tdb_data.tdd_obytes 427#define tdb_idrops tdb_data.tdd_idrops 428#define tdb_odrops tdb_data.tdd_odrops 429#define tdb_idecompbytes tdb_data.tdd_idecompbytes 430#define tdb_ouncompbytes tdb_data.tdd_ouncompbytes 431 432 433struct tdb_ident { 434 u_int32_t spi; 435 union sockaddr_union dst; 436 u_int8_t proto; 437 u_int rdomain; 438}; 439 440struct tdb_crypto { 441 union sockaddr_union tc_dst; 442 u_int64_t tc_rpl; 443 u_int32_t tc_spi; 444 int tc_protoff; 445 int tc_skip; 446 u_int tc_rdomain; 447 u_int8_t tc_proto; 448}; 449 450struct ipsecinit { 451 u_int8_t *ii_enckey; 452 u_int8_t *ii_authkey; 453 u_int16_t ii_enckeylen; 454 u_int16_t ii_authkeylen; 455 u_int8_t ii_encalg; 456 u_int8_t ii_authalg; 457 u_int8_t ii_compalg; 458}; 459 460/* xform IDs */ 461#define XF_IP4 1 /* IP inside IP */ 462#define XF_AH 2 /* AH */ 463#define XF_ESP 3 /* ESP */ 464#define XF_TCPSIGNATURE 5 /* TCP MD5 Signature option, RFC 2358 */ 465#define XF_IPCOMP 6 /* IPCOMP */ 466 467/* xform attributes */ 468#define XFT_AUTH 0x0001 469#define XFT_CONF 0x0100 470#define XFT_COMP 0x1000 471 472#define IPSEC_ZEROES_SIZE 256 /* Larger than an IP6 extension hdr. */ 473 474struct xformsw { 475 u_short xf_type; /* Unique ID of xform */ 476 u_short xf_flags; /* flags (see below) */ 477 char *xf_name; /* human-readable name */ 478 int (*xf_attach)(void); /* called at config time */ 479 int (*xf_init)(struct tdb *, const struct xformsw *, 480 struct ipsecinit *); 481 int (*xf_zeroize)(struct tdb *); /* termination */ 482 int (*xf_input)(struct mbuf **, struct tdb *, int, int); 483 int (*xf_output)(struct mbuf *, struct tdb *, int, int); 484}; 485 486extern int ipsec_in_use; 487extern u_int64_t ipsec_last_added; 488extern int encdebug; /* enable message reporting */ 489 490extern int ipsec_keep_invalid; /* lifetime of embryonic SAs (in sec) */ 491extern int ipsec_require_pfs; /* use Perfect Forward Secrecy */ 492extern int ipsec_expire_acquire; /* wait for security assoc. (in sec) */ 493extern int ipsec_soft_allocations; /* flows/SA before renegotiation */ 494extern int ipsec_exp_allocations; /* num. of flows/SA before it expires */ 495extern int ipsec_soft_bytes; /* bytes/SA before renegotiation */ 496extern int ipsec_exp_bytes; /* num of bytes/SA before it expires */ 497extern int ipsec_soft_timeout; /* seconds/SA before renegotiation */ 498extern int ipsec_exp_timeout; /* seconds/SA before it expires */ 499extern int ipsec_soft_first_use; /* seconds between 1st asso & renego */ 500extern int ipsec_exp_first_use; /* seconds between 1st asso & expire */ 501 502/* 503 * Names for IPsec sysctl objects 504 */ 505#define IPSEC_ENCDEBUG IPCTL_ENCDEBUG /* 12 */ 506#define IPSEC_STATS IPCTL_IPSEC_STATS /* 13 */ 507#define IPSEC_EXPIRE_ACQUIRE IPCTL_IPSEC_EXPIRE_ACQUIRE /* 14 */ 508#define IPSEC_EMBRYONIC_SA_TIMEOUT IPCTL_IPSEC_EMBRYONIC_SA_TIMEOUT/* 15 */ 509#define IPSEC_REQUIRE_PFS IPCTL_IPSEC_REQUIRE_PFS /* 16 */ 510#define IPSEC_SOFT_ALLOCATIONS IPCTL_IPSEC_SOFT_ALLOCATIONS /* 17 */ 511#define IPSEC_ALLOCATIONS IPCTL_IPSEC_ALLOCATIONS /* 18 */ 512#define IPSEC_SOFT_BYTES IPCTL_IPSEC_SOFT_BYTES /* 19 */ 513#define IPSEC_BYTES IPCTL_IPSEC_BYTES /* 20 */ 514#define IPSEC_TIMEOUT IPCTL_IPSEC_TIMEOUT /* 21 */ 515#define IPSEC_SOFT_TIMEOUT IPCTL_IPSEC_SOFT_TIMEOUT /* 22 */ 516#define IPSEC_SOFT_FIRSTUSE IPCTL_IPSEC_SOFT_FIRSTUSE /* 23 */ 517#define IPSEC_FIRSTUSE IPCTL_IPSEC_FIRSTUSE /* 24 */ 518#define IPSEC_MAXID 25 519 520extern char ipsec_def_enc[]; 521extern char ipsec_def_auth[]; 522extern char ipsec_def_comp[]; 523 524extern TAILQ_HEAD(ipsec_policy_head, ipsec_policy) ipsec_policy_head; 525 526struct cryptop; 527 528/* Misc. */ 529#ifdef ENCDEBUG 530const char *ipsp_address(union sockaddr_union *, char *, socklen_t); 531#endif /* ENCDEBUG */ 532 533/* SPD tables */ 534struct radix_node_head *spd_table_add(unsigned int); 535struct radix_node_head *spd_table_get(unsigned int); 536int spd_table_walk(unsigned int, 537 int (*walker)(struct ipsec_policy *, void *, unsigned int), void *); 538 539/* TDB management routines */ 540uint32_t reserve_spi(u_int, u_int32_t, u_int32_t, union sockaddr_union *, 541 union sockaddr_union *, u_int8_t, int *); 542struct tdb *gettdb_dir(u_int, u_int32_t, union sockaddr_union *, u_int8_t, int); 543#define gettdb(a,b,c,d) gettdb_dir((a),(b),(c),(d),0) 544#define gettdb_rev(a,b,c,d) gettdb_dir((a),(b),(c),(d),1) 545struct tdb *gettdbbydst(u_int, union sockaddr_union *, u_int8_t, 546 struct ipsec_ids *, 547 struct sockaddr_encap *, struct sockaddr_encap *); 548struct tdb *gettdbbysrc(u_int, union sockaddr_union *, u_int8_t, 549 struct ipsec_ids *, 550 struct sockaddr_encap *, struct sockaddr_encap *); 551struct tdb *gettdbbysrcdst_dir(u_int, u_int32_t, union sockaddr_union *, 552 union sockaddr_union *, u_int8_t, int); 553#define gettdbbysrcdst(a,b,c,d,e) gettdbbysrcdst_dir((a),(b),(c),(d),(e),0) 554#define gettdbbysrcdst_rev(a,b,c,d,e) gettdbbysrcdst_dir((a),(b),(c),(d),(e),1) 555void puttdb(struct tdb *); 556void tdb_delete(struct tdb *); 557struct tdb *tdb_alloc(u_int); 558void tdb_free(struct tdb *); 559int tdb_init(struct tdb *, u_int16_t, struct ipsecinit *); 560void tdb_unlink(struct tdb *); 561int tdb_walk(u_int, int (*)(struct tdb *, void *, int), void *); 562 563/* XF_IP4 */ 564int ipe4_attach(void); 565int ipe4_init(struct tdb *, const struct xformsw *, struct ipsecinit *); 566int ipe4_zeroize(struct tdb *); 567int ipe4_input(struct mbuf **, struct tdb *, int, int); 568 569/* XF_AH */ 570int ah_attach(void); 571int ah_init(struct tdb *, const struct xformsw *, struct ipsecinit *); 572int ah_zeroize(struct tdb *); 573int ah_input(struct mbuf **, struct tdb *, int, int); 574int ah_input_cb(struct tdb *, struct tdb_crypto *, struct mbuf **, int); 575int ah_output(struct mbuf *, struct tdb *, int, int); 576int ah_output_cb(struct tdb *, struct tdb_crypto *, struct mbuf *, int, 577 int); 578int ah_sysctl(int *, u_int, void *, size_t *, void *, size_t); 579 580int ah4_input(struct mbuf **, int *, int, int); 581void ah4_ctlinput(int, struct sockaddr *, u_int, void *); 582void udpencap_ctlinput(int, struct sockaddr *, u_int, void *); 583 584#ifdef INET6 585int ah6_input(struct mbuf **, int *, int, int); 586#endif /* INET6 */ 587 588/* XF_ESP */ 589int esp_attach(void); 590int esp_init(struct tdb *, const struct xformsw *, struct ipsecinit *); 591int esp_zeroize(struct tdb *); 592int esp_input(struct mbuf **, struct tdb *, int, int); 593int esp_input_cb(struct tdb *, uint8_t *, int, int, uint64_t, 594 struct mbuf **, int); 595int esp_output(struct mbuf *, struct tdb *, int, int); 596int esp_sysctl(int *, u_int, void *, size_t *, void *, size_t); 597 598int esp4_input(struct mbuf **, int *, int, int); 599void esp4_ctlinput(int, struct sockaddr *, u_int, void *); 600 601#ifdef INET6 602int esp6_input(struct mbuf **, int *, int, int); 603#endif /* INET6 */ 604 605/* XF_IPCOMP */ 606int ipcomp_attach(void); 607int ipcomp_init(struct tdb *, const struct xformsw *, struct ipsecinit *); 608int ipcomp_zeroize(struct tdb *); 609int ipcomp_input(struct mbuf **, struct tdb *, int, int); 610int ipcomp_input_cb(struct tdb *, struct tdb_crypto *, struct mbuf **, int); 611int ipcomp_output(struct mbuf *, struct tdb *, int, int); 612int ipcomp_output_cb(struct tdb *, struct tdb_crypto *, struct mbuf *, int, 613 int); 614int ipcomp_sysctl(int *, u_int, void *, size_t *, void *, size_t); 615int ipcomp4_input(struct mbuf **, int *, int, int); 616#ifdef INET6 617int ipcomp6_input(struct mbuf **, int *, int, int); 618#endif /* INET6 */ 619 620/* XF_TCPSIGNATURE */ 621int tcp_signature_tdb_attach(void); 622int tcp_signature_tdb_init(struct tdb *, const struct xformsw *, 623 struct ipsecinit *); 624int tcp_signature_tdb_zeroize(struct tdb *); 625int tcp_signature_tdb_input(struct mbuf **, struct tdb *, int, int); 626int tcp_signature_tdb_output(struct mbuf *, struct tdb *, int, int); 627 628/* Replay window */ 629int checkreplaywindow(struct tdb *, u_int64_t, u_int32_t, u_int32_t *, int); 630 631/* Packet processing */ 632int ipsp_process_packet(struct mbuf *, struct tdb *, int, int); 633int ipsp_process_done(struct mbuf *, struct tdb *); 634struct tdb *ipsp_spd_lookup(struct mbuf *, int, int, int *, int, 635 struct tdb *, struct inpcb *, u_int32_t); 636struct tdb *ipsp_spd_inp(struct mbuf *, int, int, int *, int, 637 struct tdb *, struct inpcb *, struct ipsec_policy *); 638int ipsp_is_unspecified(union sockaddr_union); 639int ipsp_aux_match(struct tdb *, struct ipsec_ids *, 640 struct sockaddr_encap *, struct sockaddr_encap *); 641int ipsp_ids_match(struct ipsec_ids *, struct ipsec_ids *); 642struct ipsec_ids *ipsp_ids_insert(struct ipsec_ids *); 643struct ipsec_ids *ipsp_ids_lookup(u_int32_t); 644void ipsp_ids_free(struct ipsec_ids *); 645 646void ipsp_init(void); 647void ipsec_init(void); 648int ipsec_sysctl(int *, u_int, void *, size_t *, void *, size_t); 649int ipsec_common_input(struct mbuf **, int, int, int, int, int); 650int ipsec_common_input_cb(struct mbuf **, struct tdb *, int, int); 651int ipsec_delete_policy(struct ipsec_policy *); 652ssize_t ipsec_hdrsz(struct tdb *); 653void ipsec_adjust_mtu(struct mbuf *, u_int32_t); 654void ipsec_set_mtu(struct tdb *, u_int32_t); 655struct ipsec_acquire *ipsec_get_acquire(u_int32_t); 656int ipsec_forward_check(struct mbuf *, int, int); 657int ipsec_local_check(struct mbuf *, int, int, int); 658 659#endif /* _KERNEL */ 660#endif /* _NETINET_IPSP_H_ */ 661