ip_ipsp.h revision 1.243
1/* $OpenBSD: ip_ipsp.h,v 1.243 2023/10/11 22:13:16 tobhe 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 * a atomic operations 47 * N net lock 48 * A ipsec_acquire_mtx 49 * F ipsec_flows_mtx 50 * P ipo_tdb_mtx link policy to TDB global mutex 51 * D tdb_sadb_mtx SA database global mutex 52 * m tdb_mtx fields of struct tdb 53 * S pfsync fields of struct tdb 54 */ 55 56/* IPSP global definitions. */ 57 58#include <sys/types.h> 59#include <netinet/in.h> 60 61union sockaddr_union { 62 struct sockaddr sa; 63 struct sockaddr_in sin; 64 struct sockaddr_in6 sin6; 65}; 66 67#define AH_HMAC_MAX_HASHLEN 32 /* 256 bits of authenticator for SHA512 */ 68#define AH_HMAC_RPLENGTH 4 /* 32 bits of replay counter */ 69#define AH_HMAC_INITIAL_RPL 1 /* Replay counter initial value */ 70 71/* Authenticator lengths */ 72#define AH_MD5_ALEN 16 73#define AH_SHA1_ALEN 20 74#define AH_RMD160_ALEN 20 75#define AH_SHA2_256_ALEN 32 76#define AH_SHA2_384_ALEN 48 77#define AH_SHA2_512_ALEN 64 78#define AH_ALEN_MAX 64 /* Keep updated */ 79 80/* Reserved SPI numbers */ 81#define SPI_LOCAL_USE 0 82#define SPI_RESERVED_MIN 1 83#define SPI_RESERVED_MAX 255 84 85/* Reserved CPI numbers */ 86#define CPI_RESERVED_MIN 1 87#define CPI_RESERVED_MAX 255 88#define CPI_PRIVATE_MIN 61440 89#define CPI_PRIVATE_MAX 65535 90 91/* sysctl default values */ 92#define IPSEC_DEFAULT_EMBRYONIC_SA_TIMEOUT 60 /* 1 minute */ 93#define IPSEC_DEFAULT_PFS 1 94#define IPSEC_DEFAULT_SOFT_ALLOCATIONS 0 95#define IPSEC_DEFAULT_EXP_ALLOCATIONS 0 96#define IPSEC_DEFAULT_SOFT_BYTES 0 97#define IPSEC_DEFAULT_EXP_BYTES 0 98#define IPSEC_DEFAULT_SOFT_TIMEOUT 80000 99#define IPSEC_DEFAULT_EXP_TIMEOUT 86400 100#define IPSEC_DEFAULT_SOFT_FIRST_USE 3600 101#define IPSEC_DEFAULT_EXP_FIRST_USE 7200 102#define IPSEC_DEFAULT_DEF_ENC "aes" 103#define IPSEC_DEFAULT_DEF_AUTH "hmac-sha1" 104#define IPSEC_DEFAULT_EXPIRE_ACQUIRE 30 105#define IPSEC_DEFAULT_DEF_COMP "deflate" 106 107struct sockaddr_encap { 108 u_int8_t sen_len; /* length */ 109 u_int8_t sen_family; /* PF_KEY */ 110 u_int16_t sen_type; /* see SENT_* */ 111 union { 112 struct { /* SENT_IP4 */ 113 u_int8_t Direction; 114 struct in_addr Src; 115 struct in_addr Dst; 116 u_int8_t Proto; 117 u_int16_t Sport; 118 u_int16_t Dport; 119 } Sip4; 120 121 struct { /* SENT_IP6 */ 122 u_int8_t Direction; 123 struct in6_addr Src; 124 struct in6_addr Dst; 125 u_int8_t Proto; 126 u_int16_t Sport; 127 u_int16_t Dport; 128 } Sip6; 129 } Sen; 130}; 131 132#define IPSP_DIRECTION_IN 0x1 133#define IPSP_DIRECTION_OUT 0x2 134 135struct ipsecstat { 136 uint64_t ipsec_tunnels; /* Number of active tunnels */ 137 uint64_t ipsec_prevtunnels; /* Past number of tunnels */ 138 uint64_t ipsec_ipackets; /* Input IPsec packets */ 139 uint64_t ipsec_opackets; /* Output IPsec packets */ 140 uint64_t ipsec_ibytes; /* Input bytes */ 141 uint64_t ipsec_obytes; /* Output bytes */ 142 uint64_t ipsec_idecompbytes; /* Input bytes, decompressed */ 143 uint64_t ipsec_ouncompbytes; /* Output bytes, uncompressed */ 144 uint64_t ipsec_idrops; /* Dropped on input */ 145 uint64_t ipsec_odrops; /* Dropped on output */ 146 uint64_t ipsec_crypto; /* Crypto processing failure */ 147 uint64_t ipsec_notdb; /* No TDB was found */ 148 uint64_t ipsec_noxform; /* Crypto error */ 149 uint64_t ipsec_exctdb; /* TDBs with hardlimit excess */ 150}; 151 152#ifdef _KERNEL 153 154#include <sys/timeout.h> 155#include <sys/tree.h> 156#include <sys/queue.h> 157#include <net/radix.h> 158#include <sys/percpu.h> 159 160enum ipsec_counters { 161 ipsec_tunnels, 162 ipsec_prevtunnels, 163 ipsec_ipackets, 164 ipsec_opackets, 165 ipsec_ibytes, 166 ipsec_obytes, 167 ipsec_idecompbytes, 168 ipsec_ouncompbytes, 169 ipsec_idrops, 170 ipsec_odrops, 171 ipsec_crypto, 172 ipsec_notdb, 173 ipsec_noxform, 174 ipsec_exctdb, 175 ipsec_ncounters 176}; 177 178extern struct cpumem *ipseccounters; 179 180static inline void 181ipsecstat_inc(enum ipsec_counters c) 182{ 183 counters_inc(ipseccounters, c); 184} 185 186static inline void 187ipsecstat_dec(enum ipsec_counters c) 188{ 189 counters_dec(ipseccounters, c); 190} 191 192static inline void 193ipsecstat_add(enum ipsec_counters c, uint64_t v) 194{ 195 counters_add(ipseccounters, c, v); 196} 197 198static inline void 199ipsecstat_pkt(enum ipsec_counters p, enum ipsec_counters b, uint64_t v) 200{ 201 counters_pkt(ipseccounters, p, b, v); 202} 203 204struct m_tag; 205 206#define sen_data Sen.Data 207#define sen_ip_src Sen.Sip4.Src 208#define sen_ip_dst Sen.Sip4.Dst 209#define sen_proto Sen.Sip4.Proto 210#define sen_sport Sen.Sip4.Sport 211#define sen_dport Sen.Sip4.Dport 212#define sen_direction Sen.Sip4.Direction 213#define sen_ip6_src Sen.Sip6.Src 214#define sen_ip6_dst Sen.Sip6.Dst 215#define sen_ip6_proto Sen.Sip6.Proto 216#define sen_ip6_sport Sen.Sip6.Sport 217#define sen_ip6_dport Sen.Sip6.Dport 218#define sen_ip6_direction Sen.Sip6.Direction 219 220/* 221 * The "type" is really part of the address as far as the routing 222 * system is concerned. By using only one bit in the type field 223 * for each type, we sort-of make sure that different types of 224 * encapsulation addresses won't be matched against the wrong type. 225 * 226 */ 227 228#define SENT_IP4 0x0001 /* data is two struct in_addr */ 229#define SENT_IP6 0x0002 230 231#define SENT_LEN sizeof(struct sockaddr_encap) 232 233struct ipsec_id { 234 u_int16_t type; /* Subtype of data */ 235 int16_t len; /* Length of data following */ 236}; 237 238struct ipsec_ids { 239 LIST_ENTRY(ipsec_ids) id_gc_list; /* [F] */ 240 RBT_ENTRY(ipsec_ids) id_node_id; /* [F] */ 241 RBT_ENTRY(ipsec_ids) id_node_flow; /* [F] */ 242 struct ipsec_id *id_local; /* [I] */ 243 struct ipsec_id *id_remote; /* [I] */ 244 u_int32_t id_flow; /* [I] */ 245 u_int id_refcount; /* [F] */ 246 u_int id_gc_ttl; /* [F] */ 247}; 248RBT_HEAD(ipsec_ids_flows, ipsec_ids); 249RBT_HEAD(ipsec_ids_tree, ipsec_ids); 250 251struct ipsec_acquire { 252 union sockaddr_union ipa_addr; 253 u_int32_t ipa_seq; 254 struct sockaddr_encap ipa_info; 255 struct sockaddr_encap ipa_mask; 256 struct refcnt ipa_refcnt; 257 struct timeout ipa_timeout; 258 struct ipsec_policy *ipa_policy; /* [A] back pointer */ 259 TAILQ_ENTRY(ipsec_acquire) ipa_ipo_next; /* [A] per policy */ 260 TAILQ_ENTRY(ipsec_acquire) ipa_next; /* [A] global list */ 261}; 262 263TAILQ_HEAD(ipsec_acquire_head, ipsec_acquire); 264 265struct ipsec_policy { 266 struct radix_node ipo_nodes[2]; /* radix tree glue */ 267 struct sockaddr_encap ipo_addr; 268 struct sockaddr_encap ipo_mask; 269 270 union sockaddr_union ipo_src; /* Local address to use */ 271 union sockaddr_union ipo_dst; /* Remote gateway -- if it's zeroed: 272 * - on output, we try to 273 * contact the remote host 274 * directly (if needed). 275 * - on input, we accept on if 276 * the inner source is the 277 * same as the outer source 278 * address, or if transport 279 * mode was used. 280 */ 281 282 u_int64_t ipo_last_searched; /* [P] Timestamp of lookup */ 283 284 u_int8_t ipo_flags; /* See IPSP_POLICY_* definitions */ 285 u_int8_t ipo_type; /* USE/ACQUIRE/... */ 286 u_int8_t ipo_sproto; /* ESP/AH; if zero, use system dflts */ 287 u_int ipo_rdomain; 288 289 struct refcnt ipo_refcnt; 290 291 struct tdb *ipo_tdb; /* [P] Cached TDB entry */ 292 293 struct ipsec_ids *ipo_ids; 294 295 struct ipsec_acquire_head ipo_acquires; /* [A] List of acquires */ 296 TAILQ_ENTRY(ipsec_policy) ipo_tdb_next; /* [P] List TDB policies */ 297 TAILQ_ENTRY(ipsec_policy) ipo_list; /* List of all policies */ 298}; 299 300#define IPSP_POLICY_NONE 0x0000 /* No flags set */ 301#define IPSP_POLICY_STATIC 0x0002 /* Static policy */ 302 303#define IPSP_IPSEC_USE 0 /* Use if existing, don't acquire */ 304#define IPSP_IPSEC_ACQUIRE 1 /* Try acquire, let packet through */ 305#define IPSP_IPSEC_REQUIRE 2 /* Require SA */ 306#define IPSP_PERMIT 3 /* Permit traffic through */ 307#define IPSP_DENY 4 /* Deny traffic */ 308#define IPSP_IPSEC_DONTACQ 5 /* Require, but don't acquire */ 309 310/* Identity types */ 311#define IPSP_IDENTITY_NONE 0 312#define IPSP_IDENTITY_PREFIX 1 313#define IPSP_IDENTITY_FQDN 2 314#define IPSP_IDENTITY_USERFQDN 3 315#define IPSP_IDENTITY_ASN1_DN 4 316 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; /* [D] dst/spi/sproto table */ 327 struct tdb *tdb_dnext; /* [D] dst/sproto table */ 328 struct tdb *tdb_snext; /* [D] 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#define TDBF_PFSYNC_SNAPPED 0x200000 /* entry is being dispatched to peer */ 360#define TDBF_IFACE 0x400000 /* entry policy is via sec(4) */ 361 362#define TDBF_BITS ("\20" \ 363 "\1UNIQUE\2TIMER\3BYTES\4ALLOCATIONS" \ 364 "\5INVALID\6FIRSTUSE\7DELETED\10SOFT_TIMER" \ 365 "\11SOFT_BYTES\12SOFT_ALLOCATIONS\13SOFT_FIRSTUSE\14PFS" \ 366 "\15TUNNELING" \ 367 "\21USEDTUNNEL\22UDPENCAP\23PFSYNC\24PFSYNC_RPL" \ 368 "\25ESN" "\26IFACE") 369 370 u_int32_t tdb_flags; /* [m] Flags related to this TDB */ 371 372 struct timeout tdb_timer_tmo; 373 struct timeout tdb_first_tmo; 374 struct timeout tdb_stimer_tmo; 375 struct timeout tdb_sfirst_tmo; 376 377 u_int32_t tdb_seq; /* Tracking number for PFKEY */ 378 u_int32_t tdb_exp_allocations; /* Expire after so many flows */ 379 u_int32_t tdb_soft_allocations; /* Expiration warning */ 380 u_int32_t tdb_cur_allocations; /* Total number of allocs */ 381 382 u_int64_t tdb_exp_bytes; /* Expire after so many bytes passed */ 383 u_int64_t tdb_soft_bytes; /* Expiration warning */ 384 u_int64_t tdb_cur_bytes; /* Current count of bytes */ 385 386 u_int64_t tdb_exp_timeout; /* When does the SPI expire */ 387 u_int64_t tdb_soft_timeout; /* Send soft-expire warning */ 388 u_int64_t tdb_established; /* When was SPI established */ 389 390 u_int64_t tdb_first_use; /* When was it first used */ 391 u_int64_t tdb_soft_first_use; /* Soft warning */ 392 u_int64_t tdb_exp_first_use; /* Expire if tdb_first_use + 393 * tdb_exp_first_use <= curtime 394 */ 395 396 u_int64_t tdb_last_used; /* When was this SA last used */ 397 u_int64_t tdb_last_marked;/* Last SKIPCRYPTO status change */ 398 399 struct cpumem *tdb_counters; /* stats about this TDB */ 400 401 u_int64_t tdb_cryptoid; /* Crypto session ID */ 402 403 u_int32_t tdb_spi; /* [I] SPI */ 404 u_int16_t tdb_amxkeylen; /* Raw authentication key length */ 405 u_int16_t tdb_emxkeylen; /* Raw encryption key length */ 406 u_int16_t tdb_ivlen; /* IV length */ 407 u_int8_t tdb_sproto; /* [I] IPsec protocol */ 408 u_int8_t tdb_wnd; /* Replay window */ 409 u_int8_t tdb_satype; /* SA type (RFC2367, PF_KEY) */ 410 u_int8_t tdb_iface_dir; /* [I] sec(4) iface direction */ 411 412 union sockaddr_union tdb_dst; /* [N] Destination address */ 413 union sockaddr_union tdb_src; /* [N] Source address */ 414 415 u_int8_t *tdb_amxkey; /* Raw authentication key */ 416 u_int8_t *tdb_emxkey; /* Raw encryption key */ 417 418#define TDB_REPLAYWASTE 32 419#define TDB_REPLAYMAX (2100+TDB_REPLAYWASTE) 420 421 u_int64_t tdb_rpl; /* Replay counter */ 422 u_int32_t tdb_seen[howmany(TDB_REPLAYMAX, 32)]; /* Anti-replay window */ 423 424 u_int8_t tdb_iv[4]; /* Used for HALF-IV ESP */ 425 426 struct ipsec_ids *tdb_ids; /* Src/Dst ID for this SA */ 427 int tdb_ids_swapped; /* XXX */ 428 429 u_int32_t tdb_mtu; /* MTU at this point in the chain */ 430 u_int64_t tdb_mtutimeout; /* When to ignore this entry */ 431 432 u_int16_t tdb_udpencap_port; /* Peer UDP port */ 433 434 u_int16_t tdb_tag; /* Packet filter tag */ 435 u_int32_t tdb_tap; /* Alternate enc(4) interface */ 436 unsigned int tdb_iface; /* [I] sec(4) iface */ 437 438 u_int tdb_rdomain; /* [I] Routing domain */ 439 u_int tdb_rdomain_post; /* [I] Change domain */ 440 441 struct sockaddr_encap tdb_filter; /* What traffic is acceptable */ 442 struct sockaddr_encap tdb_filtermask; /* And the mask */ 443 444 TAILQ_HEAD(tdb_policy_head, ipsec_policy) tdb_policy_head; /* [P] */ 445 TAILQ_ENTRY(tdb) tdb_sync_entry; /* [S] pfsync tdb queue */ 446 u_int32_t tdb_updates; /* [S] pfsync update counter */ 447}; 448 449enum tdb_counters { 450 tdb_ipackets, /* Input IPsec packets */ 451 tdb_opackets, /* Output IPsec packets */ 452 tdb_ibytes, /* Input bytes */ 453 tdb_obytes, /* Output bytes */ 454 tdb_idrops, /* Dropped on input */ 455 tdb_odrops, /* Dropped on output */ 456 tdb_idecompbytes, /* Input bytes, decompressed */ 457 tdb_ouncompbytes, /* Output bytes, uncompressed */ 458 tdb_ncounters 459}; 460 461static inline void 462tdbstat_inc(struct tdb *tdb, enum tdb_counters c) 463{ 464 counters_inc(tdb->tdb_counters, c); 465} 466 467static inline void 468tdbstat_add(struct tdb *tdb, enum tdb_counters c, uint64_t v) 469{ 470 counters_add(tdb->tdb_counters, c, v); 471} 472 473static inline void 474tdbstat_pkt(struct tdb *tdb, enum tdb_counters pc, enum tdb_counters bc, 475 uint64_t bytes) 476{ 477 counters_pkt(tdb->tdb_counters, pc, bc, bytes); 478} 479 480struct tdb_ident { 481 u_int32_t spi; 482 union sockaddr_union dst; 483 u_int8_t proto; 484 u_int rdomain; 485}; 486 487struct tdb_crypto { 488 union sockaddr_union tc_dst; 489 u_int64_t tc_rpl; 490 u_int32_t tc_spi; 491 int tc_protoff; 492 int tc_skip; 493 u_int tc_rdomain; 494 u_int8_t tc_proto; 495}; 496 497struct ipsecinit { 498 u_int8_t *ii_enckey; 499 u_int8_t *ii_authkey; 500 u_int16_t ii_enckeylen; 501 u_int16_t ii_authkeylen; 502 u_int8_t ii_encalg; 503 u_int8_t ii_authalg; 504 u_int8_t ii_compalg; 505}; 506 507/* xform IDs */ 508#define XF_IP4 1 /* IP inside IP */ 509#define XF_AH 2 /* AH */ 510#define XF_ESP 3 /* ESP */ 511#define XF_TCPSIGNATURE 5 /* TCP MD5 Signature option, RFC 2358 */ 512#define XF_IPCOMP 6 /* IPCOMP */ 513 514/* xform attributes */ 515#define XFT_AUTH 0x0001 516#define XFT_CONF 0x0100 517#define XFT_COMP 0x1000 518 519#define IPSEC_ZEROES_SIZE 256 /* Larger than an IP6 extension hdr. */ 520 521struct xformsw { 522 u_short xf_type; /* Unique ID of xform */ 523 u_short xf_flags; /* flags (see below) */ 524 char *xf_name; /* human-readable name */ 525 int (*xf_attach)(void); /* called at config time */ 526 int (*xf_init)(struct tdb *, const struct xformsw *, 527 struct ipsecinit *); 528 int (*xf_zeroize)(struct tdb *); /* termination */ 529 int (*xf_input)(struct mbuf **, struct tdb *, int, int); 530 int (*xf_output)(struct mbuf *, struct tdb *, int, int); 531}; 532 533extern int ipsec_in_use; 534extern u_int64_t ipsec_last_added; 535extern int encdebug; /* enable message reporting */ 536extern struct pool tdb_pool; 537 538extern int ipsec_keep_invalid; /* lifetime of embryonic SAs (in sec) */ 539extern int ipsec_require_pfs; /* use Perfect Forward Secrecy */ 540extern int ipsec_expire_acquire; /* wait for security assoc. (in sec) */ 541extern int ipsec_soft_allocations; /* flows/SA before renegotiation */ 542extern int ipsec_exp_allocations; /* num. of flows/SA before it expires */ 543extern int ipsec_soft_bytes; /* bytes/SA before renegotiation */ 544extern int ipsec_exp_bytes; /* num of bytes/SA before it expires */ 545extern int ipsec_soft_timeout; /* seconds/SA before renegotiation */ 546extern int ipsec_exp_timeout; /* seconds/SA before it expires */ 547extern int ipsec_soft_first_use; /* seconds between 1st asso & renego */ 548extern int ipsec_exp_first_use; /* seconds between 1st asso & expire */ 549 550/* 551 * Names for IPsec sysctl objects 552 */ 553#define IPSEC_ENCDEBUG IPCTL_ENCDEBUG /* 12 */ 554#define IPSEC_STATS IPCTL_IPSEC_STATS /* 13 */ 555#define IPSEC_EXPIRE_ACQUIRE IPCTL_IPSEC_EXPIRE_ACQUIRE /* 14 */ 556#define IPSEC_EMBRYONIC_SA_TIMEOUT IPCTL_IPSEC_EMBRYONIC_SA_TIMEOUT/* 15 */ 557#define IPSEC_REQUIRE_PFS IPCTL_IPSEC_REQUIRE_PFS /* 16 */ 558#define IPSEC_SOFT_ALLOCATIONS IPCTL_IPSEC_SOFT_ALLOCATIONS /* 17 */ 559#define IPSEC_ALLOCATIONS IPCTL_IPSEC_ALLOCATIONS /* 18 */ 560#define IPSEC_SOFT_BYTES IPCTL_IPSEC_SOFT_BYTES /* 19 */ 561#define IPSEC_BYTES IPCTL_IPSEC_BYTES /* 20 */ 562#define IPSEC_TIMEOUT IPCTL_IPSEC_TIMEOUT /* 21 */ 563#define IPSEC_SOFT_TIMEOUT IPCTL_IPSEC_SOFT_TIMEOUT /* 22 */ 564#define IPSEC_SOFT_FIRSTUSE IPCTL_IPSEC_SOFT_FIRSTUSE /* 23 */ 565#define IPSEC_FIRSTUSE IPCTL_IPSEC_FIRSTUSE /* 24 */ 566#define IPSEC_MAXID 25 567 568extern char ipsec_def_enc[]; 569extern char ipsec_def_auth[]; 570extern char ipsec_def_comp[]; 571 572extern TAILQ_HEAD(ipsec_policy_head, ipsec_policy) ipsec_policy_head; 573 574extern struct mutex tdb_sadb_mtx; 575extern struct mutex ipo_tdb_mtx; 576 577struct cryptop; 578 579/* Misc. */ 580const char *ipsp_address(union sockaddr_union *, char *, socklen_t); 581 582/* SPD tables */ 583struct radix_node_head *spd_table_add(unsigned int); 584struct radix_node_head *spd_table_get(unsigned int); 585int spd_table_walk(unsigned int, 586 int (*walker)(struct ipsec_policy *, void *, unsigned int), void *); 587 588/* TDB management routines */ 589uint32_t reserve_spi(u_int, u_int32_t, u_int32_t, union sockaddr_union *, 590 union sockaddr_union *, u_int8_t, int *); 591struct tdb *gettdb_dir(u_int, u_int32_t, union sockaddr_union *, u_int8_t, int); 592#define gettdb(a,b,c,d) gettdb_dir((a),(b),(c),(d),0) 593#define gettdb_rev(a,b,c,d) gettdb_dir((a),(b),(c),(d),1) 594struct tdb *gettdbbydst(u_int, union sockaddr_union *, u_int8_t, 595 struct ipsec_ids *, 596 struct sockaddr_encap *, struct sockaddr_encap *); 597struct tdb *gettdbbysrc(u_int, union sockaddr_union *, u_int8_t, 598 struct ipsec_ids *, 599 struct sockaddr_encap *, struct sockaddr_encap *); 600struct tdb *gettdbbysrcdst_dir(u_int, u_int32_t, union sockaddr_union *, 601 union sockaddr_union *, u_int8_t, int); 602#define gettdbbysrcdst(a,b,c,d,e) gettdbbysrcdst_dir((a),(b),(c),(d),(e),0) 603#define gettdbbysrcdst_rev(a,b,c,d,e) gettdbbysrcdst_dir((a),(b),(c),(d),(e),1) 604void puttdb(struct tdb *); 605void puttdb_locked(struct tdb *); 606void tdb_delete(struct tdb *); 607struct tdb *tdb_alloc(u_int); 608struct tdb *tdb_ref(struct tdb *); 609void tdb_unref(struct tdb *); 610void tdb_free(struct tdb *); 611int tdb_init(struct tdb *, u_int16_t, struct ipsecinit *); 612void tdb_unlink(struct tdb *); 613void tdb_unlink_locked(struct tdb *); 614void tdb_cleanspd(struct tdb *); 615void tdb_unbundle(struct tdb *); 616void tdb_addtimeouts(struct tdb *); 617void tdb_deltimeouts(struct tdb *); 618int tdb_walk(u_int, int (*)(struct tdb *, void *, int), void *); 619void tdb_printit(void *, int, int (*)(const char *, ...)); 620 621/* XF_IP4 */ 622int ipe4_attach(void); 623int ipe4_init(struct tdb *, const struct xformsw *, struct ipsecinit *); 624int ipe4_zeroize(struct tdb *); 625int ipe4_input(struct mbuf **, struct tdb *, int, int); 626 627/* XF_AH */ 628int ah_attach(void); 629int ah_init(struct tdb *, const struct xformsw *, struct ipsecinit *); 630int ah_zeroize(struct tdb *); 631int ah_input(struct mbuf **, struct tdb *, int, int); 632int ah_output(struct mbuf *, struct tdb *, int, int); 633int ah_sysctl(int *, u_int, void *, size_t *, void *, size_t); 634 635int ah46_input(struct mbuf **, int *, int, int); 636void ah4_ctlinput(int, struct sockaddr *, u_int, void *); 637void udpencap_ctlinput(int, struct sockaddr *, u_int, void *); 638 639/* XF_ESP */ 640int esp_attach(void); 641int esp_init(struct tdb *, const struct xformsw *, struct ipsecinit *); 642int esp_zeroize(struct tdb *); 643int esp_input(struct mbuf **, struct tdb *, int, int); 644int esp_output(struct mbuf *, struct tdb *, int, int); 645int esp_sysctl(int *, u_int, void *, size_t *, void *, size_t); 646 647int esp46_input(struct mbuf **, int *, int, int); 648void esp4_ctlinput(int, struct sockaddr *, u_int, void *); 649 650/* XF_IPCOMP */ 651int ipcomp_attach(void); 652int ipcomp_init(struct tdb *, const struct xformsw *, struct ipsecinit *); 653int ipcomp_zeroize(struct tdb *); 654int ipcomp_input(struct mbuf **, struct tdb *, int, int); 655int ipcomp_output(struct mbuf *, struct tdb *, int, int); 656int ipcomp_sysctl(int *, u_int, void *, size_t *, void *, size_t); 657int ipcomp46_input(struct mbuf **, int *, int, int); 658 659/* XF_TCPSIGNATURE */ 660int tcp_signature_tdb_attach(void); 661int tcp_signature_tdb_init(struct tdb *, const struct xformsw *, 662 struct ipsecinit *); 663int tcp_signature_tdb_zeroize(struct tdb *); 664int tcp_signature_tdb_input(struct mbuf **, struct tdb *, int, int); 665int tcp_signature_tdb_output(struct mbuf *, struct tdb *, int, int); 666 667/* Replay window */ 668int checkreplaywindow(struct tdb *, u_int64_t, u_int32_t, u_int32_t *, int); 669 670/* Packet processing */ 671int ipsp_process_packet(struct mbuf *, struct tdb *, int, int); 672int ipsp_process_done(struct mbuf *, struct tdb *); 673int ipsp_spd_lookup(struct mbuf *, int, int, int, struct tdb *, 674 struct inpcb *, struct tdb **, struct ipsec_ids *); 675int ipsp_is_unspecified(union sockaddr_union); 676int ipsp_aux_match(struct tdb *, struct ipsec_ids *, 677 struct sockaddr_encap *, struct sockaddr_encap *); 678int ipsp_ids_match(struct ipsec_ids *, struct ipsec_ids *); 679struct ipsec_ids *ipsp_ids_insert(struct ipsec_ids *); 680struct ipsec_ids *ipsp_ids_lookup(u_int32_t); 681void ipsp_ids_free(struct ipsec_ids *); 682 683void ipsp_init(void); 684void ipsec_init(void); 685int ipsec_sysctl(int *, u_int, void *, size_t *, void *, size_t); 686int ipsec_common_input(struct mbuf **, int, int, int, int, int); 687int ipsec_common_input_cb(struct mbuf **, struct tdb *, int, int); 688int ipsec_input_disabled(struct mbuf **, int *, int, int); 689int ipsec_protoff(struct mbuf *, int, int); 690int ipsec_delete_policy(struct ipsec_policy *); 691ssize_t ipsec_hdrsz(struct tdb *); 692void ipsec_adjust_mtu(struct mbuf *, u_int32_t); 693void ipsec_set_mtu(struct tdb *, u_int32_t); 694struct ipsec_acquire *ipsec_get_acquire(u_int32_t); 695void ipsec_unref_acquire(struct ipsec_acquire *); 696int ipsec_forward_check(struct mbuf *, int, int); 697int ipsec_local_check(struct mbuf *, int, int, int); 698 699#endif /* _KERNEL */ 700#endif /* _NETINET_IPSP_H_ */ 701