ip_ipsp.h revision 1.234
1/* $OpenBSD: ip_ipsp.h,v 1.234 2022/01/04 06:32:39 yasuoka 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/* 44 * Locks used to protect struct members in this file: 45 * I Immutable after creation 46 * F ipsec_flows_mtx 47 * a atomic 48 * p ipo_tdb_mtx link policy to TDB global mutex 49 */ 50 51/* IPSP global definitions. */ 52 53#include <sys/types.h> 54#include <netinet/in.h> 55 56union sockaddr_union { 57 struct sockaddr sa; 58 struct sockaddr_in sin; 59 struct sockaddr_in6 sin6; 60}; 61 62#define AH_HMAC_MAX_HASHLEN 32 /* 256 bits of authenticator for SHA512 */ 63#define AH_HMAC_RPLENGTH 4 /* 32 bits of replay counter */ 64#define AH_HMAC_INITIAL_RPL 1 /* Replay counter initial value */ 65 66/* Authenticator lengths */ 67#define AH_MD5_ALEN 16 68#define AH_SHA1_ALEN 20 69#define AH_RMD160_ALEN 20 70#define AH_SHA2_256_ALEN 32 71#define AH_SHA2_384_ALEN 48 72#define AH_SHA2_512_ALEN 64 73#define AH_ALEN_MAX 64 /* Keep updated */ 74 75/* Reserved SPI numbers */ 76#define SPI_LOCAL_USE 0 77#define SPI_RESERVED_MIN 1 78#define SPI_RESERVED_MAX 255 79 80/* Reserved CPI numbers */ 81#define CPI_RESERVED_MIN 1 82#define CPI_RESERVED_MAX 255 83#define CPI_PRIVATE_MIN 61440 84#define CPI_PRIVATE_MAX 65535 85 86/* sysctl default values */ 87#define IPSEC_DEFAULT_EMBRYONIC_SA_TIMEOUT 60 /* 1 minute */ 88#define IPSEC_DEFAULT_PFS 1 89#define IPSEC_DEFAULT_SOFT_ALLOCATIONS 0 90#define IPSEC_DEFAULT_EXP_ALLOCATIONS 0 91#define IPSEC_DEFAULT_SOFT_BYTES 0 92#define IPSEC_DEFAULT_EXP_BYTES 0 93#define IPSEC_DEFAULT_SOFT_TIMEOUT 80000 94#define IPSEC_DEFAULT_EXP_TIMEOUT 86400 95#define IPSEC_DEFAULT_SOFT_FIRST_USE 3600 96#define IPSEC_DEFAULT_EXP_FIRST_USE 7200 97#define IPSEC_DEFAULT_DEF_ENC "aes" 98#define IPSEC_DEFAULT_DEF_AUTH "hmac-sha1" 99#define IPSEC_DEFAULT_EXPIRE_ACQUIRE 30 100#define IPSEC_DEFAULT_DEF_COMP "deflate" 101 102struct sockaddr_encap { 103 u_int8_t sen_len; /* length */ 104 u_int8_t sen_family; /* PF_KEY */ 105 u_int16_t sen_type; /* see SENT_* */ 106 union { 107 struct { /* SENT_IP4 */ 108 u_int8_t Direction; 109 struct in_addr Src; 110 struct in_addr Dst; 111 u_int8_t Proto; 112 u_int16_t Sport; 113 u_int16_t Dport; 114 } Sip4; 115 116 struct { /* SENT_IP6 */ 117 u_int8_t Direction; 118 struct in6_addr Src; 119 struct in6_addr Dst; 120 u_int8_t Proto; 121 u_int16_t Sport; 122 u_int16_t Dport; 123 } Sip6; 124 } Sen; 125}; 126 127#define IPSP_DIRECTION_IN 0x1 128#define IPSP_DIRECTION_OUT 0x2 129 130struct ipsecstat { 131 uint64_t ipsec_tunnels; /* Number of active tunnels */ 132 uint64_t ipsec_prevtunnels; /* Past number of tunnels */ 133 uint64_t ipsec_ipackets; /* Input IPsec packets */ 134 uint64_t ipsec_opackets; /* Output IPsec packets */ 135 uint64_t ipsec_ibytes; /* Input bytes */ 136 uint64_t ipsec_obytes; /* Output bytes */ 137 uint64_t ipsec_idecompbytes; /* Input bytes, decompressed */ 138 uint64_t ipsec_ouncompbytes; /* Output bytes, uncompressed */ 139 uint64_t ipsec_idrops; /* Dropped on input */ 140 uint64_t ipsec_odrops; /* Dropped on output */ 141 uint64_t ipsec_crypto; /* Crypto processing failure */ 142 uint64_t ipsec_notdb; /* No TDB was found */ 143 uint64_t ipsec_noxform; /* Crypto error */ 144 uint64_t ipsec_exctdb; /* TDBs with hardlimit excess */ 145}; 146 147#ifdef _KERNEL 148 149#include <sys/timeout.h> 150#include <sys/tree.h> 151#include <sys/queue.h> 152#include <net/radix.h> 153#include <sys/percpu.h> 154 155enum ipsec_counters { 156 ipsec_tunnels, 157 ipsec_prevtunnels, 158 ipsec_ipackets, 159 ipsec_opackets, 160 ipsec_ibytes, 161 ipsec_obytes, 162 ipsec_idecompbytes, 163 ipsec_ouncompbytes, 164 ipsec_idrops, 165 ipsec_odrops, 166 ipsec_crypto, 167 ipsec_notdb, 168 ipsec_noxform, 169 ipsec_exctdb, 170 ipsec_ncounters 171}; 172 173extern struct cpumem *ipseccounters; 174 175static inline void 176ipsecstat_inc(enum ipsec_counters c) 177{ 178 counters_inc(ipseccounters, c); 179} 180 181static inline void 182ipsecstat_dec(enum ipsec_counters c) 183{ 184 counters_dec(ipseccounters, c); 185} 186 187static inline void 188ipsecstat_add(enum ipsec_counters c, uint64_t v) 189{ 190 counters_add(ipseccounters, c, v); 191} 192 193static inline void 194ipsecstat_pkt(enum ipsec_counters p, enum ipsec_counters b, uint64_t v) 195{ 196 counters_pkt(ipseccounters, p, b, v); 197} 198 199struct m_tag; 200 201#define sen_data Sen.Data 202#define sen_ip_src Sen.Sip4.Src 203#define sen_ip_dst Sen.Sip4.Dst 204#define sen_proto Sen.Sip4.Proto 205#define sen_sport Sen.Sip4.Sport 206#define sen_dport Sen.Sip4.Dport 207#define sen_direction Sen.Sip4.Direction 208#define sen_ip6_src Sen.Sip6.Src 209#define sen_ip6_dst Sen.Sip6.Dst 210#define sen_ip6_proto Sen.Sip6.Proto 211#define sen_ip6_sport Sen.Sip6.Sport 212#define sen_ip6_dport Sen.Sip6.Dport 213#define sen_ip6_direction Sen.Sip6.Direction 214 215/* 216 * The "type" is really part of the address as far as the routing 217 * system is concerned. By using only one bit in the type field 218 * for each type, we sort-of make sure that different types of 219 * encapsulation addresses won't be matched against the wrong type. 220 * 221 */ 222 223#define SENT_IP4 0x0001 /* data is two struct in_addr */ 224#define SENT_IP6 0x0002 225 226#define SENT_LEN sizeof(struct sockaddr_encap) 227 228struct ipsec_id { 229 u_int16_t type; /* Subtype of data */ 230 int16_t len; /* Length of data following */ 231}; 232 233struct ipsec_ids { 234 LIST_ENTRY(ipsec_ids) id_gc_list; /* [F] */ 235 RBT_ENTRY(ipsec_ids) id_node_id; /* [F] */ 236 RBT_ENTRY(ipsec_ids) id_node_flow; /* [F] */ 237 struct ipsec_id *id_local; /* [I] */ 238 struct ipsec_id *id_remote; /* [I] */ 239 u_int32_t id_flow; /* [I] */ 240 u_int id_refcount; /* [a] */ 241 u_int id_gc_ttl; /* [F] */ 242}; 243RBT_HEAD(ipsec_ids_flows, ipsec_ids); 244RBT_HEAD(ipsec_ids_tree, ipsec_ids); 245 246struct ipsec_acquire { 247 union sockaddr_union ipa_addr; 248 u_int32_t ipa_seq; 249 struct sockaddr_encap ipa_info; 250 struct sockaddr_encap ipa_mask; 251 struct timeout ipa_timeout; 252 struct ipsec_policy *ipa_policy; 253 TAILQ_ENTRY(ipsec_acquire) ipa_ipo_next; 254 TAILQ_ENTRY(ipsec_acquire) ipa_next; 255}; 256 257struct ipsec_policy { 258 struct radix_node ipo_nodes[2]; /* radix tree glue */ 259 struct sockaddr_encap ipo_addr; 260 struct sockaddr_encap ipo_mask; 261 262 union sockaddr_union ipo_src; /* Local address to use */ 263 union sockaddr_union ipo_dst; /* Remote gateway -- if it's zeroed: 264 * - on output, we try to 265 * contact the remote host 266 * directly (if needed). 267 * - on input, we accept on if 268 * the inner source is the 269 * same as the outer source 270 * address, or if transport 271 * mode was used. 272 */ 273 274 u_int64_t ipo_last_searched; /* [p] Timestamp of lookup */ 275 276 u_int8_t ipo_flags; /* See IPSP_POLICY_* definitions */ 277 u_int8_t ipo_type; /* USE/ACQUIRE/... */ 278 u_int8_t ipo_sproto; /* ESP/AH; if zero, use system dflts */ 279 u_int ipo_rdomain; 280 281 int ipo_ref_count; 282 283 struct tdb *ipo_tdb; /* [p] Cached TDB entry */ 284 285 struct ipsec_ids *ipo_ids; 286 287 TAILQ_HEAD(ipo_acquires_head, ipsec_acquire) ipo_acquires; /* List of acquires */ 288 TAILQ_ENTRY(ipsec_policy) ipo_tdb_next; /* List TDB policies */ 289 TAILQ_ENTRY(ipsec_policy) ipo_list; /* List of all policies */ 290}; 291 292#define IPSP_POLICY_NONE 0x0000 /* No flags set */ 293#define IPSP_POLICY_STATIC 0x0002 /* Static policy */ 294 295#define IPSP_IPSEC_USE 0 /* Use if existing, don't acquire */ 296#define IPSP_IPSEC_ACQUIRE 1 /* Try acquire, let packet through */ 297#define IPSP_IPSEC_REQUIRE 2 /* Require SA */ 298#define IPSP_PERMIT 3 /* Permit traffic through */ 299#define IPSP_DENY 4 /* Deny traffic */ 300#define IPSP_IPSEC_DONTACQ 5 /* Require, but don't acquire */ 301 302/* Identity types */ 303#define IPSP_IDENTITY_NONE 0 304#define IPSP_IDENTITY_PREFIX 1 305#define IPSP_IDENTITY_FQDN 2 306#define IPSP_IDENTITY_USERFQDN 3 307#define IPSP_IDENTITY_ASN1_DN 4 308 309/* 310 * Locks used to protect struct members in this file: 311 * I immutable after creation 312 * N net lock 313 * m tdb_mtx 314 * p ipo_tdb_mtx link policy to TDB global mutex 315 * s tdb_sadb_mtx SA database global mutex 316 */ 317struct tdb { /* tunnel descriptor block */ 318 /* 319 * Each TDB is on three hash tables: one keyed on dst/spi/sproto, 320 * one keyed on dst/sproto, and one keyed on src/sproto. The first 321 * is used for finding a specific TDB, the second for finding TDBs 322 * for outgoing policy matching, and the third for incoming 323 * policy matching. The following three fields maintain the hash 324 * queues in those three tables. 325 */ 326 struct tdb *tdb_hnext; /* [s] dst/spi/sproto table */ 327 struct tdb *tdb_dnext; /* [s] dst/sproto table */ 328 struct tdb *tdb_snext; /* [s] src/sproto table */ 329 struct tdb *tdb_inext; 330 struct tdb *tdb_onext; 331 SIMPLEQ_ENTRY(tdb) tdb_walk; /* [N] temp list for tdb walker */ 332 333 struct refcnt tdb_refcnt; 334 struct mutex tdb_mtx; 335 336 const struct xformsw *tdb_xform; /* Transform to use */ 337 const struct enc_xform *tdb_encalgxform; /* Enc algorithm */ 338 const struct auth_hash *tdb_authalgxform; /* Auth algorithm */ 339 const struct comp_algo *tdb_compalgxform; /* Compression algo */ 340 341#define TDBF_UNIQUE 0x00001 /* This should not be used by others */ 342#define TDBF_TIMER 0x00002 /* Absolute expiration timer in use */ 343#define TDBF_BYTES 0x00004 /* Check the byte counters */ 344#define TDBF_ALLOCATIONS 0x00008 /* Check the flows counters */ 345#define TDBF_INVALID 0x00010 /* This SPI is not valid yet/anymore */ 346#define TDBF_FIRSTUSE 0x00020 /* Expire after first use */ 347#define TDBF_DELETED 0x00040 /* This TDB has already been deleted */ 348#define TDBF_SOFT_TIMER 0x00080 /* Soft expiration */ 349#define TDBF_SOFT_BYTES 0x00100 /* Soft expiration */ 350#define TDBF_SOFT_ALLOCATIONS 0x00200 /* Soft expiration */ 351#define TDBF_SOFT_FIRSTUSE 0x00400 /* Soft expiration */ 352#define TDBF_PFS 0x00800 /* Ask for PFS from Key Mgmt. */ 353#define TDBF_TUNNELING 0x01000 /* Force IP-IP encapsulation */ 354#define TDBF_USEDTUNNEL 0x10000 /* Appended a tunnel header in past */ 355#define TDBF_UDPENCAP 0x20000 /* UDP encapsulation */ 356#define TDBF_PFSYNC 0x40000 /* TDB will be synced */ 357#define TDBF_PFSYNC_RPL 0x80000 /* Replay counter should be bumped */ 358#define TDBF_ESN 0x100000 /* 64-bit sequence numbers (ESN) */ 359 360#define TDBF_BITS ("\20" \ 361 "\1UNIQUE\2TIMER\3BYTES\4ALLOCATIONS" \ 362 "\5INVALID\6FIRSTUSE\7DELETED\10SOFT_TIMER" \ 363 "\11SOFT_BYTES\12SOFT_ALLOCATIONS\13SOFT_FIRSTUSE\14PFS" \ 364 "\15TUNNELING" \ 365 "\21USEDTUNNEL\22UDPENCAP\23PFSYNC\24PFSYNC_RPL" \ 366 "\25ESN") 367 368 u_int32_t tdb_flags; /* [m] Flags related to this TDB */ 369 370 struct timeout tdb_timer_tmo; 371 struct timeout tdb_first_tmo; 372 struct timeout tdb_stimer_tmo; 373 struct timeout tdb_sfirst_tmo; 374 375 u_int32_t tdb_seq; /* Tracking number for PFKEY */ 376 u_int32_t tdb_exp_allocations; /* Expire after so many flows */ 377 u_int32_t tdb_soft_allocations; /* Expiration warning */ 378 u_int32_t tdb_cur_allocations; /* Total number of allocs */ 379 380 u_int64_t tdb_exp_bytes; /* Expire after so many bytes passed */ 381 u_int64_t tdb_soft_bytes; /* Expiration warning */ 382 u_int64_t tdb_cur_bytes; /* Current count of bytes */ 383 384 u_int64_t tdb_exp_timeout; /* When does the SPI expire */ 385 u_int64_t tdb_soft_timeout; /* Send soft-expire warning */ 386 u_int64_t tdb_established; /* When was SPI established */ 387 388 u_int64_t tdb_first_use; /* When was it first used */ 389 u_int64_t tdb_soft_first_use; /* Soft warning */ 390 u_int64_t tdb_exp_first_use; /* Expire if tdb_first_use + 391 * tdb_exp_first_use <= curtime 392 */ 393 394 u_int64_t tdb_last_used; /* When was this SA last used */ 395 u_int64_t tdb_last_marked;/* Last SKIPCRYPTO status change */ 396 397 struct cpumem *tdb_counters; /* stats about this TDB */ 398 399 u_int64_t tdb_cryptoid; /* Crypto session ID */ 400 401 u_int32_t tdb_spi; /* [I] SPI */ 402 u_int16_t tdb_amxkeylen; /* Raw authentication key length */ 403 u_int16_t tdb_emxkeylen; /* Raw encryption key length */ 404 u_int16_t tdb_ivlen; /* IV length */ 405 u_int8_t tdb_sproto; /* [I] IPsec protocol */ 406 u_int8_t tdb_wnd; /* Replay window */ 407 u_int8_t tdb_satype; /* SA type (RFC2367, PF_KEY) */ 408 u_int8_t tdb_updates; /* pfsync update counter */ 409 410 union sockaddr_union tdb_dst; /* [N] Destination address */ 411 union sockaddr_union tdb_src; /* [N] Source address */ 412 413 u_int8_t *tdb_amxkey; /* Raw authentication key */ 414 u_int8_t *tdb_emxkey; /* Raw encryption key */ 415 416#define TDB_REPLAYWASTE 32 417#define TDB_REPLAYMAX (2100+TDB_REPLAYWASTE) 418 419 u_int64_t tdb_rpl; /* Replay counter */ 420 u_int32_t tdb_seen[howmany(TDB_REPLAYMAX, 32)]; /* Anti-replay window */ 421 422 u_int8_t tdb_iv[4]; /* Used for HALF-IV ESP */ 423 424 struct ipsec_ids *tdb_ids; /* Src/Dst ID for this SA */ 425 int tdb_ids_swapped; /* XXX */ 426 427 u_int32_t tdb_mtu; /* MTU at this point in the chain */ 428 u_int64_t tdb_mtutimeout; /* When to ignore this entry */ 429 430 u_int16_t tdb_udpencap_port; /* Peer UDP port */ 431 432 u_int16_t tdb_tag; /* Packet filter tag */ 433 u_int32_t tdb_tap; /* Alternate enc(4) interface */ 434 435 u_int tdb_rdomain; /* [I] Routing domain */ 436 u_int tdb_rdomain_post; /* [I] Change domain */ 437 438 struct sockaddr_encap tdb_filter; /* What traffic is acceptable */ 439 struct sockaddr_encap tdb_filtermask; /* And the mask */ 440 441 TAILQ_HEAD(tdb_policy_head, ipsec_policy) tdb_policy_head; /* [p] */ 442 TAILQ_ENTRY(tdb) tdb_sync_entry; 443}; 444 445enum tdb_counters { 446 tdb_ipackets, /* Input IPsec packets */ 447 tdb_opackets, /* Output IPsec packets */ 448 tdb_ibytes, /* Input bytes */ 449 tdb_obytes, /* Output bytes */ 450 tdb_idrops, /* Dropped on input */ 451 tdb_odrops, /* Dropped on output */ 452 tdb_idecompbytes, /* Input bytes, decompressed */ 453 tdb_ouncompbytes, /* Output bytes, uncompressed */ 454 tdb_ncounters 455}; 456 457static inline void 458tdbstat_inc(struct tdb *tdb, enum tdb_counters c) 459{ 460 counters_inc(tdb->tdb_counters, c); 461} 462 463static inline void 464tdbstat_add(struct tdb *tdb, enum tdb_counters c, uint64_t v) 465{ 466 counters_add(tdb->tdb_counters, c, v); 467} 468 469static inline void 470tdbstat_pkt(struct tdb *tdb, enum tdb_counters pc, enum tdb_counters bc, 471 uint64_t bytes) 472{ 473 counters_pkt(tdb->tdb_counters, pc, bc, bytes); 474} 475 476struct tdb_ident { 477 u_int32_t spi; 478 union sockaddr_union dst; 479 u_int8_t proto; 480 u_int rdomain; 481}; 482 483struct tdb_crypto { 484 union sockaddr_union tc_dst; 485 u_int64_t tc_rpl; 486 u_int32_t tc_spi; 487 int tc_protoff; 488 int tc_skip; 489 u_int tc_rdomain; 490 u_int8_t tc_proto; 491}; 492 493struct ipsecinit { 494 u_int8_t *ii_enckey; 495 u_int8_t *ii_authkey; 496 u_int16_t ii_enckeylen; 497 u_int16_t ii_authkeylen; 498 u_int8_t ii_encalg; 499 u_int8_t ii_authalg; 500 u_int8_t ii_compalg; 501}; 502 503/* xform IDs */ 504#define XF_IP4 1 /* IP inside IP */ 505#define XF_AH 2 /* AH */ 506#define XF_ESP 3 /* ESP */ 507#define XF_TCPSIGNATURE 5 /* TCP MD5 Signature option, RFC 2358 */ 508#define XF_IPCOMP 6 /* IPCOMP */ 509 510/* xform attributes */ 511#define XFT_AUTH 0x0001 512#define XFT_CONF 0x0100 513#define XFT_COMP 0x1000 514 515#define IPSEC_ZEROES_SIZE 256 /* Larger than an IP6 extension hdr. */ 516 517struct xformsw { 518 u_short xf_type; /* Unique ID of xform */ 519 u_short xf_flags; /* flags (see below) */ 520 char *xf_name; /* human-readable name */ 521 int (*xf_attach)(void); /* called at config time */ 522 int (*xf_init)(struct tdb *, const struct xformsw *, 523 struct ipsecinit *); 524 int (*xf_zeroize)(struct tdb *); /* termination */ 525 int (*xf_input)(struct mbuf **, struct tdb *, int, int); 526 int (*xf_output)(struct mbuf *, struct tdb *, int, int); 527}; 528 529extern int ipsec_in_use; 530extern u_int64_t ipsec_last_added; 531extern int encdebug; /* enable message reporting */ 532extern struct pool tdb_pool; 533 534extern int ipsec_keep_invalid; /* lifetime of embryonic SAs (in sec) */ 535extern int ipsec_require_pfs; /* use Perfect Forward Secrecy */ 536extern int ipsec_expire_acquire; /* wait for security assoc. (in sec) */ 537extern int ipsec_soft_allocations; /* flows/SA before renegotiation */ 538extern int ipsec_exp_allocations; /* num. of flows/SA before it expires */ 539extern int ipsec_soft_bytes; /* bytes/SA before renegotiation */ 540extern int ipsec_exp_bytes; /* num of bytes/SA before it expires */ 541extern int ipsec_soft_timeout; /* seconds/SA before renegotiation */ 542extern int ipsec_exp_timeout; /* seconds/SA before it expires */ 543extern int ipsec_soft_first_use; /* seconds between 1st asso & renego */ 544extern int ipsec_exp_first_use; /* seconds between 1st asso & expire */ 545 546/* 547 * Names for IPsec sysctl objects 548 */ 549#define IPSEC_ENCDEBUG IPCTL_ENCDEBUG /* 12 */ 550#define IPSEC_STATS IPCTL_IPSEC_STATS /* 13 */ 551#define IPSEC_EXPIRE_ACQUIRE IPCTL_IPSEC_EXPIRE_ACQUIRE /* 14 */ 552#define IPSEC_EMBRYONIC_SA_TIMEOUT IPCTL_IPSEC_EMBRYONIC_SA_TIMEOUT/* 15 */ 553#define IPSEC_REQUIRE_PFS IPCTL_IPSEC_REQUIRE_PFS /* 16 */ 554#define IPSEC_SOFT_ALLOCATIONS IPCTL_IPSEC_SOFT_ALLOCATIONS /* 17 */ 555#define IPSEC_ALLOCATIONS IPCTL_IPSEC_ALLOCATIONS /* 18 */ 556#define IPSEC_SOFT_BYTES IPCTL_IPSEC_SOFT_BYTES /* 19 */ 557#define IPSEC_BYTES IPCTL_IPSEC_BYTES /* 20 */ 558#define IPSEC_TIMEOUT IPCTL_IPSEC_TIMEOUT /* 21 */ 559#define IPSEC_SOFT_TIMEOUT IPCTL_IPSEC_SOFT_TIMEOUT /* 22 */ 560#define IPSEC_SOFT_FIRSTUSE IPCTL_IPSEC_SOFT_FIRSTUSE /* 23 */ 561#define IPSEC_FIRSTUSE IPCTL_IPSEC_FIRSTUSE /* 24 */ 562#define IPSEC_MAXID 25 563 564extern char ipsec_def_enc[]; 565extern char ipsec_def_auth[]; 566extern char ipsec_def_comp[]; 567 568extern TAILQ_HEAD(ipsec_policy_head, ipsec_policy) ipsec_policy_head; 569 570extern struct mutex tdb_sadb_mtx; 571extern struct mutex ipo_tdb_mtx; 572 573struct cryptop; 574 575/* Misc. */ 576const char *ipsp_address(union sockaddr_union *, char *, socklen_t); 577 578/* SPD tables */ 579struct radix_node_head *spd_table_add(unsigned int); 580struct radix_node_head *spd_table_get(unsigned int); 581int spd_table_walk(unsigned int, 582 int (*walker)(struct ipsec_policy *, void *, unsigned int), void *); 583 584/* TDB management routines */ 585uint32_t reserve_spi(u_int, u_int32_t, u_int32_t, union sockaddr_union *, 586 union sockaddr_union *, u_int8_t, int *); 587struct tdb *gettdb_dir(u_int, u_int32_t, union sockaddr_union *, u_int8_t, int); 588#define gettdb(a,b,c,d) gettdb_dir((a),(b),(c),(d),0) 589#define gettdb_rev(a,b,c,d) gettdb_dir((a),(b),(c),(d),1) 590struct tdb *gettdbbydst(u_int, union sockaddr_union *, u_int8_t, 591 struct ipsec_ids *, 592 struct sockaddr_encap *, struct sockaddr_encap *); 593struct tdb *gettdbbysrc(u_int, union sockaddr_union *, u_int8_t, 594 struct ipsec_ids *, 595 struct sockaddr_encap *, struct sockaddr_encap *); 596struct tdb *gettdbbysrcdst_dir(u_int, u_int32_t, union sockaddr_union *, 597 union sockaddr_union *, u_int8_t, int); 598#define gettdbbysrcdst(a,b,c,d,e) gettdbbysrcdst_dir((a),(b),(c),(d),(e),0) 599#define gettdbbysrcdst_rev(a,b,c,d,e) gettdbbysrcdst_dir((a),(b),(c),(d),(e),1) 600void puttdb(struct tdb *); 601void puttdb_locked(struct tdb *); 602void tdb_delete(struct tdb *); 603struct tdb *tdb_alloc(u_int); 604struct tdb *tdb_ref(struct tdb *); 605void tdb_unref(struct tdb *); 606void tdb_free(struct tdb *); 607int tdb_init(struct tdb *, u_int16_t, struct ipsecinit *); 608void tdb_unlink(struct tdb *); 609void tdb_unlink_locked(struct tdb *); 610void tdb_cleanspd(struct tdb *); 611void tdb_unbundle(struct tdb *); 612void tdb_deltimeouts(struct tdb *); 613int tdb_walk(u_int, int (*)(struct tdb *, void *, int), void *); 614void tdb_printit(void *, int, int (*)(const char *, ...)); 615 616/* XF_IP4 */ 617int ipe4_attach(void); 618int ipe4_init(struct tdb *, const struct xformsw *, struct ipsecinit *); 619int ipe4_zeroize(struct tdb *); 620int ipe4_input(struct mbuf **, struct tdb *, int, int); 621 622/* XF_AH */ 623int ah_attach(void); 624int ah_init(struct tdb *, const struct xformsw *, struct ipsecinit *); 625int ah_zeroize(struct tdb *); 626int ah_input(struct mbuf **, struct tdb *, int, int); 627int ah_output(struct mbuf *, struct tdb *, int, int); 628int ah_sysctl(int *, u_int, void *, size_t *, void *, size_t); 629 630int ah46_input(struct mbuf **, int *, int, int); 631void ah4_ctlinput(int, struct sockaddr *, u_int, void *); 632void udpencap_ctlinput(int, struct sockaddr *, u_int, void *); 633 634/* XF_ESP */ 635int esp_attach(void); 636int esp_init(struct tdb *, const struct xformsw *, struct ipsecinit *); 637int esp_zeroize(struct tdb *); 638int esp_input(struct mbuf **, struct tdb *, int, int); 639int esp_output(struct mbuf *, struct tdb *, int, int); 640int esp_sysctl(int *, u_int, void *, size_t *, void *, size_t); 641 642int esp46_input(struct mbuf **, int *, int, int); 643void esp4_ctlinput(int, struct sockaddr *, u_int, void *); 644 645/* XF_IPCOMP */ 646int ipcomp_attach(void); 647int ipcomp_init(struct tdb *, const struct xformsw *, struct ipsecinit *); 648int ipcomp_zeroize(struct tdb *); 649int ipcomp_input(struct mbuf **, struct tdb *, int, int); 650int ipcomp_output(struct mbuf *, struct tdb *, int, int); 651int ipcomp_sysctl(int *, u_int, void *, size_t *, void *, size_t); 652int ipcomp46_input(struct mbuf **, int *, int, int); 653 654/* XF_TCPSIGNATURE */ 655int tcp_signature_tdb_attach(void); 656int tcp_signature_tdb_init(struct tdb *, const struct xformsw *, 657 struct ipsecinit *); 658int tcp_signature_tdb_zeroize(struct tdb *); 659int tcp_signature_tdb_input(struct mbuf **, struct tdb *, int, int); 660int tcp_signature_tdb_output(struct mbuf *, struct tdb *, int, int); 661 662/* Replay window */ 663int checkreplaywindow(struct tdb *, u_int64_t, u_int32_t, u_int32_t *, int); 664 665/* Packet processing */ 666int ipsp_process_packet(struct mbuf *, struct tdb *, int, int); 667int ipsp_process_done(struct mbuf *, struct tdb *); 668int ipsp_spd_lookup(struct mbuf *, int, int, int, struct tdb *, 669 struct inpcb *, struct tdb **, struct ipsec_ids *); 670int ipsp_is_unspecified(union sockaddr_union); 671int ipsp_aux_match(struct tdb *, struct ipsec_ids *, 672 struct sockaddr_encap *, struct sockaddr_encap *); 673int ipsp_ids_match(struct ipsec_ids *, struct ipsec_ids *); 674struct ipsec_ids *ipsp_ids_insert(struct ipsec_ids *); 675struct ipsec_ids *ipsp_ids_lookup(u_int32_t); 676void ipsp_ids_free(struct ipsec_ids *); 677 678void ipsp_init(void); 679void ipsec_init(void); 680int ipsec_sysctl(int *, u_int, void *, size_t *, void *, size_t); 681int ipsec_common_input(struct mbuf **, int, int, int, int, int); 682int ipsec_common_input_cb(struct mbuf **, struct tdb *, int, int); 683int ipsec_input_disabled(struct mbuf **, int *, int, int); 684int ipsec_protoff(struct mbuf *, int, int); 685int ipsec_delete_policy(struct ipsec_policy *); 686ssize_t ipsec_hdrsz(struct tdb *); 687void ipsec_adjust_mtu(struct mbuf *, u_int32_t); 688void ipsec_set_mtu(struct tdb *, u_int32_t); 689struct ipsec_acquire *ipsec_get_acquire(u_int32_t); 690int ipsec_forward_check(struct mbuf *, int, int); 691int ipsec_local_check(struct mbuf *, int, int, int); 692 693#endif /* _KERNEL */ 694#endif /* _NETINET_IPSP_H_ */ 695