1 /* $FreeBSD$ */ 2 /* $KAME: pfkeyv2.h,v 1.37 2003/09/06 05:15:43 itojun Exp $ */ 3 4 /*- 5 * SPDX-License-Identifier: BSD-3-Clause 6 * 7 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the project nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /* 36 * This file has been derived rfc 2367, 37 * And added some flags of SADB_KEY_FLAGS_ as SADB_X_EXT_. 38 * sakane@ydc.co.jp 39 */ 40 41 #ifndef _NET_PFKEYV2_H_ 42 #define _NET_PFKEYV2_H_ 43 44 /* 45 This file defines structures and symbols for the PF_KEY Version 2 46 key management interface. It was written at the U.S. Naval Research 47 Laboratory. This file is in the public domain. The authors ask that 48 you leave this credit intact on any copies of this file. 49 */ 50 #ifndef __PFKEY_V2_H 51 #define __PFKEY_V2_H 1 52 53 #define PF_KEY_V2 2 54 #define PFKEYV2_REVISION 199806L 55 56 #define SADB_RESERVED 0 57 #define SADB_GETSPI 1 58 #define SADB_UPDATE 2 59 #define SADB_ADD 3 60 #define SADB_DELETE 4 61 #define SADB_GET 5 62 #define SADB_ACQUIRE 6 63 #define SADB_REGISTER 7 64 #define SADB_EXPIRE 8 65 #define SADB_FLUSH 9 66 #define SADB_DUMP 10 67 #define SADB_X_PROMISC 11 68 #define SADB_X_PCHANGE 12 69 70 #define SADB_X_SPDUPDATE 13 71 #define SADB_X_SPDADD 14 72 #define SADB_X_SPDDELETE 15 /* by policy index */ 73 #define SADB_X_SPDGET 16 74 #define SADB_X_SPDACQUIRE 17 75 #define SADB_X_SPDDUMP 18 76 #define SADB_X_SPDFLUSH 19 77 #define SADB_X_SPDSETIDX 20 78 #define SADB_X_SPDEXPIRE 21 79 #define SADB_X_SPDDELETE2 22 /* by policy id */ 80 #define SADB_MAX 22 81 82 struct sadb_msg { 83 u_int8_t sadb_msg_version; 84 u_int8_t sadb_msg_type; 85 u_int8_t sadb_msg_errno; 86 u_int8_t sadb_msg_satype; 87 u_int16_t sadb_msg_len; 88 u_int16_t sadb_msg_reserved; 89 u_int32_t sadb_msg_seq; 90 u_int32_t sadb_msg_pid; 91 }; 92 93 struct sadb_ext { 94 u_int16_t sadb_ext_len; 95 u_int16_t sadb_ext_type; 96 }; 97 98 struct sadb_sa { 99 u_int16_t sadb_sa_len; 100 u_int16_t sadb_sa_exttype; 101 u_int32_t sadb_sa_spi; 102 u_int8_t sadb_sa_replay; 103 u_int8_t sadb_sa_state; 104 u_int8_t sadb_sa_auth; 105 u_int8_t sadb_sa_encrypt; 106 u_int32_t sadb_sa_flags; 107 }; 108 109 struct sadb_lifetime { 110 u_int16_t sadb_lifetime_len; 111 u_int16_t sadb_lifetime_exttype; 112 u_int32_t sadb_lifetime_allocations; 113 u_int64_t sadb_lifetime_bytes; 114 u_int64_t sadb_lifetime_addtime; 115 u_int64_t sadb_lifetime_usetime; 116 }; 117 118 struct sadb_address { 119 u_int16_t sadb_address_len; 120 u_int16_t sadb_address_exttype; 121 u_int8_t sadb_address_proto; 122 u_int8_t sadb_address_prefixlen; 123 u_int16_t sadb_address_reserved; 124 }; 125 126 struct sadb_key { 127 u_int16_t sadb_key_len; 128 u_int16_t sadb_key_exttype; 129 u_int16_t sadb_key_bits; 130 u_int16_t sadb_key_reserved; 131 }; 132 133 struct sadb_ident { 134 u_int16_t sadb_ident_len; 135 u_int16_t sadb_ident_exttype; 136 u_int16_t sadb_ident_type; 137 u_int16_t sadb_ident_reserved; 138 u_int64_t sadb_ident_id; 139 }; 140 141 struct sadb_sens { 142 u_int16_t sadb_sens_len; 143 u_int16_t sadb_sens_exttype; 144 u_int32_t sadb_sens_dpd; 145 u_int8_t sadb_sens_sens_level; 146 u_int8_t sadb_sens_sens_len; 147 u_int8_t sadb_sens_integ_level; 148 u_int8_t sadb_sens_integ_len; 149 u_int32_t sadb_sens_reserved; 150 }; 151 152 struct sadb_prop { 153 u_int16_t sadb_prop_len; 154 u_int16_t sadb_prop_exttype; 155 u_int8_t sadb_prop_replay; 156 u_int8_t sadb_prop_reserved[3]; 157 }; 158 159 struct sadb_comb { 160 u_int8_t sadb_comb_auth; 161 u_int8_t sadb_comb_encrypt; 162 u_int16_t sadb_comb_flags; 163 u_int16_t sadb_comb_auth_minbits; 164 u_int16_t sadb_comb_auth_maxbits; 165 u_int16_t sadb_comb_encrypt_minbits; 166 u_int16_t sadb_comb_encrypt_maxbits; 167 u_int32_t sadb_comb_reserved; 168 u_int32_t sadb_comb_soft_allocations; 169 u_int32_t sadb_comb_hard_allocations; 170 u_int64_t sadb_comb_soft_bytes; 171 u_int64_t sadb_comb_hard_bytes; 172 u_int64_t sadb_comb_soft_addtime; 173 u_int64_t sadb_comb_hard_addtime; 174 u_int64_t sadb_comb_soft_usetime; 175 u_int64_t sadb_comb_hard_usetime; 176 }; 177 178 struct sadb_supported { 179 u_int16_t sadb_supported_len; 180 u_int16_t sadb_supported_exttype; 181 u_int32_t sadb_supported_reserved; 182 }; 183 184 struct sadb_alg { 185 u_int8_t sadb_alg_id; 186 u_int8_t sadb_alg_ivlen; 187 u_int16_t sadb_alg_minbits; 188 u_int16_t sadb_alg_maxbits; 189 u_int16_t sadb_alg_reserved; 190 }; 191 192 struct sadb_spirange { 193 u_int16_t sadb_spirange_len; 194 u_int16_t sadb_spirange_exttype; 195 u_int32_t sadb_spirange_min; 196 u_int32_t sadb_spirange_max; 197 u_int32_t sadb_spirange_reserved; 198 }; 199 200 struct sadb_x_kmprivate { 201 u_int16_t sadb_x_kmprivate_len; 202 u_int16_t sadb_x_kmprivate_exttype; 203 u_int32_t sadb_x_kmprivate_reserved; 204 }; 205 206 /* 207 * XXX Additional SA Extension. 208 * mode: tunnel or transport 209 * reqid: to make SA unique nevertheless the address pair of SA are same. 210 * Mainly it's for VPN. 211 */ 212 struct sadb_x_sa2 { 213 u_int16_t sadb_x_sa2_len; 214 u_int16_t sadb_x_sa2_exttype; 215 u_int8_t sadb_x_sa2_mode; 216 u_int8_t sadb_x_sa2_reserved1; 217 u_int16_t sadb_x_sa2_reserved2; 218 u_int32_t sadb_x_sa2_sequence; /* lowermost 32bit of sequence number */ 219 u_int32_t sadb_x_sa2_reqid; 220 }; 221 222 /* XXX Policy Extension */ 223 struct sadb_x_policy { 224 u_int16_t sadb_x_policy_len; 225 u_int16_t sadb_x_policy_exttype; 226 u_int16_t sadb_x_policy_type; /* See policy type of ipsec.h */ 227 u_int8_t sadb_x_policy_dir; /* direction, see ipsec.h */ 228 u_int8_t sadb_x_policy_scope; /* scope, see ipsec.h */ 229 u_int32_t sadb_x_policy_id; 230 u_int32_t sadb_x_policy_priority; 231 #define sadb_x_policy_reserved sadb_x_policy_scope 232 /* Policy with ifnet scope uses priority field to store ifindex */ 233 #define sadb_x_policy_ifindex sadb_x_policy_priority 234 }; 235 _Static_assert(sizeof(struct sadb_x_policy) == 16, "struct size mismatch"); 236 237 /* 238 * When policy_type == IPSEC, it is followed by some of 239 * the ipsec policy request. 240 * [total length of ipsec policy requests] 241 * = (sadb_x_policy_len * sizeof(uint64_t) - sizeof(struct sadb_x_policy)) 242 */ 243 244 /* XXX IPsec Policy Request Extension */ 245 /* 246 * This structure is aligned 8 bytes. 247 */ 248 struct sadb_x_ipsecrequest { 249 u_int16_t sadb_x_ipsecrequest_len; /* structure length in 64 bits. */ 250 u_int16_t sadb_x_ipsecrequest_proto; /* See ipsec.h */ 251 u_int8_t sadb_x_ipsecrequest_mode; /* See IPSEC_MODE_XX in ipsec.h. */ 252 u_int8_t sadb_x_ipsecrequest_level; /* See IPSEC_LEVEL_XX in ipsec.h */ 253 u_int16_t sadb_x_ipsecrequest_reqid; /* See ipsec.h */ 254 255 /* 256 * followed by source IP address of SA, and immediately followed by 257 * destination IP address of SA. These encoded into two of sockaddr 258 * structure without any padding. Must set each sa_len exactly. 259 * Each of length of the sockaddr structure are not aligned to 64bits, 260 * but sum of x_request and addresses is aligned to 64bits. 261 */ 262 }; 263 264 /* NAT-Traversal type, see RFC 3948 (and drafts). */ 265 struct sadb_x_nat_t_type { 266 u_int16_t sadb_x_nat_t_type_len; 267 u_int16_t sadb_x_nat_t_type_exttype; 268 u_int8_t sadb_x_nat_t_type_type; 269 u_int8_t sadb_x_nat_t_type_reserved[3]; 270 }; 271 _Static_assert(sizeof(struct sadb_x_nat_t_type) == 8, "struct size mismatch"); 272 273 /* NAT-Traversal source or destination port. */ 274 struct sadb_x_nat_t_port { 275 u_int16_t sadb_x_nat_t_port_len; 276 u_int16_t sadb_x_nat_t_port_exttype; 277 u_int16_t sadb_x_nat_t_port_port; 278 u_int16_t sadb_x_nat_t_port_reserved; 279 }; 280 _Static_assert(sizeof(struct sadb_x_nat_t_port) == 8, "struct size mismatch"); 281 282 /* ESP fragmentation size. */ 283 struct sadb_x_nat_t_frag { 284 u_int16_t sadb_x_nat_t_frag_len; 285 u_int16_t sadb_x_nat_t_frag_exttype; 286 u_int16_t sadb_x_nat_t_frag_fraglen; 287 u_int16_t sadb_x_nat_t_frag_reserved; 288 }; 289 _Static_assert(sizeof(struct sadb_x_nat_t_frag) == 8, "struct size mismatch"); 290 291 /* Additional large replay window support 292 */ 293 struct sadb_x_sa_replay { 294 u_int16_t sadb_x_sa_replay_len; 295 u_int16_t sadb_x_sa_replay_exttype; 296 u_int32_t sadb_x_sa_replay_replay; /* in packets */ 297 }; 298 _Static_assert(sizeof(struct sadb_x_sa_replay) == 8, "struct size mismatch"); 299 300 #define SADB_EXT_RESERVED 0 301 #define SADB_EXT_SA 1 302 #define SADB_EXT_LIFETIME_CURRENT 2 303 #define SADB_EXT_LIFETIME_HARD 3 304 #define SADB_EXT_LIFETIME_SOFT 4 305 #define SADB_EXT_ADDRESS_SRC 5 306 #define SADB_EXT_ADDRESS_DST 6 307 #define SADB_EXT_ADDRESS_PROXY 7 308 #define SADB_EXT_KEY_AUTH 8 309 #define SADB_EXT_KEY_ENCRYPT 9 310 #define SADB_EXT_IDENTITY_SRC 10 311 #define SADB_EXT_IDENTITY_DST 11 312 #define SADB_EXT_SENSITIVITY 12 313 #define SADB_EXT_PROPOSAL 13 314 #define SADB_EXT_SUPPORTED_AUTH 14 315 #define SADB_EXT_SUPPORTED_ENCRYPT 15 316 #define SADB_EXT_SPIRANGE 16 317 #define SADB_X_EXT_KMPRIVATE 17 318 #define SADB_X_EXT_POLICY 18 319 #define SADB_X_EXT_SA2 19 320 #define SADB_X_EXT_NAT_T_TYPE 20 321 #define SADB_X_EXT_NAT_T_SPORT 21 322 #define SADB_X_EXT_NAT_T_DPORT 22 323 #define SADB_X_EXT_NAT_T_OA 23 /* Deprecated. */ 324 #define SADB_X_EXT_NAT_T_OAI 23 /* Peer's NAT_OA for src of SA. */ 325 #define SADB_X_EXT_NAT_T_OAR 24 /* Peer's NAT_OA for dst of SA. */ 326 #define SADB_X_EXT_NAT_T_FRAG 25 /* Manual MTU override. */ 327 #define SADB_X_EXT_SA_REPLAY 26 /* Replay window override. */ 328 #define SADB_X_EXT_NEW_ADDRESS_SRC 27 329 #define SADB_X_EXT_NEW_ADDRESS_DST 28 330 #define SADB_EXT_MAX 28 331 332 #define SADB_SATYPE_UNSPEC 0 333 #define SADB_SATYPE_AH 2 334 #define SADB_SATYPE_ESP 3 335 #define SADB_SATYPE_RSVP 5 336 #define SADB_SATYPE_OSPFV2 6 337 #define SADB_SATYPE_RIPV2 7 338 #define SADB_SATYPE_MIP 8 339 #define SADB_X_SATYPE_IPCOMP 9 340 /*#define SADB_X_SATYPE_POLICY 10 obsolete, do not reuse */ 341 #define SADB_X_SATYPE_TCPSIGNATURE 11 342 #define SADB_SATYPE_MAX 12 343 344 #define SADB_SASTATE_LARVAL 0 345 #define SADB_SASTATE_MATURE 1 346 #define SADB_SASTATE_DYING 2 347 #define SADB_SASTATE_DEAD 3 348 #define SADB_SASTATE_MAX 3 349 350 #define SADB_SAFLAGS_PFS 1 351 /* SADB_X_SAFLAGS_ESN was defined in sys/net/pfkeyv2.h in OpenBSD sources */ 352 #define SADB_X_SAFLAGS_ESN 0x400 353 354 /* 355 * Though some of these numbers (both _AALG and _EALG) appear to be 356 * IKEv2 numbers and others original IKE numbers, they have no meaning. 357 * These are constants that the various IKE daemons use to tell the kernel 358 * what cipher to use. 359 * 360 * Do not use these constants directly to decide which Transformation ID 361 * to send. You are responsible for mapping them yourself. 362 */ 363 #define SADB_AALG_NONE 0 364 #define SADB_AALG_MD5HMAC 2 365 #define SADB_AALG_SHA1HMAC 3 366 #define SADB_AALG_MAX 252 367 #define SADB_X_AALG_SHA2_256 5 368 #define SADB_X_AALG_SHA2_384 6 369 #define SADB_X_AALG_SHA2_512 7 370 #define SADB_X_AALG_RIPEMD160HMAC 8 371 #define SADB_X_AALG_AES_XCBC_MAC 9 /* RFC3566 */ 372 #define SADB_X_AALG_AES128GMAC 11 /* RFC4543 + Errata1821 */ 373 #define SADB_X_AALG_AES192GMAC 12 374 #define SADB_X_AALG_AES256GMAC 13 375 #define SADB_X_AALG_CHACHA20POLY1305 14 376 #define SADB_X_AALG_MD5 249 /* Keyed MD5 */ 377 #define SADB_X_AALG_SHA 250 /* Keyed SHA */ 378 #define SADB_X_AALG_NULL 251 /* null authentication */ 379 #define SADB_X_AALG_TCP_MD5 252 /* Keyed TCP-MD5 (RFC2385) */ 380 381 #define SADB_EALG_NONE 0 382 #define SADB_EALG_DESCBC 2 383 #define SADB_EALG_3DESCBC 3 384 #define SADB_X_EALG_CAST128CBC 6 385 #define SADB_X_EALG_BLOWFISHCBC 7 386 #define SADB_EALG_NULL 11 387 #define SADB_X_EALG_RIJNDAELCBC 12 388 #define SADB_X_EALG_AES 12 389 #define SADB_X_EALG_AESCBC 12 390 #define SADB_X_EALG_AESCTR 13 391 #define SADB_X_EALG_CHACHA20POLY1305 15 392 #define SADB_X_EALG_AESGCM8 18 /* RFC4106 */ 393 #define SADB_X_EALG_AESGCM12 19 394 #define SADB_X_EALG_AESGCM16 20 395 #define SADB_X_EALG_CAMELLIACBC 22 396 #define SADB_X_EALG_AESGMAC 23 /* RFC4543 + Errata1821 */ 397 #define SADB_EALG_MAX 23 /* !!! keep updated !!! */ 398 399 /* private allocations - based on RFC2407/IANA assignment */ 400 #define SADB_X_CALG_NONE 0 401 #define SADB_X_CALG_OUI 1 402 #define SADB_X_CALG_DEFLATE 2 403 #define SADB_X_CALG_LZS 3 404 #define SADB_X_CALG_MAX 4 405 406 #define SADB_IDENTTYPE_RESERVED 0 407 #define SADB_IDENTTYPE_PREFIX 1 408 #define SADB_IDENTTYPE_FQDN 2 409 #define SADB_IDENTTYPE_USERFQDN 3 410 #define SADB_X_IDENTTYPE_ADDR 4 411 #define SADB_IDENTTYPE_MAX 4 412 413 /* `flags' in sadb_sa structure holds followings */ 414 #define SADB_X_EXT_NONE 0x0000 /* i.e. new format. */ 415 #define SADB_X_EXT_OLD 0x0001 /* old format. */ 416 417 #define SADB_X_EXT_IV4B 0x0010 /* IV length of 4 bytes in use */ 418 #define SADB_X_EXT_DERIV 0x0020 /* DES derived */ 419 #define SADB_X_EXT_CYCSEQ 0x0040 /* allowing to cyclic sequence. */ 420 421 /* three of followings are exclusive flags each them */ 422 #define SADB_X_EXT_PSEQ 0x0000 /* sequencial padding for ESP */ 423 #define SADB_X_EXT_PRAND 0x0100 /* random padding for ESP */ 424 #define SADB_X_EXT_PZERO 0x0200 /* zero padding for ESP */ 425 #define SADB_X_EXT_PMASK 0x0300 /* mask for padding flag */ 426 427 #if 1 428 #define SADB_X_EXT_RAWCPI 0x0080 /* use well known CPI (IPComp) */ 429 #endif 430 431 #define SADB_KEY_FLAGS_MAX 0x0fff 432 433 /* SPI size for PF_KEYv2 */ 434 #define PFKEY_SPI_SIZE sizeof(u_int32_t) 435 436 /* Identifier for menber of lifetime structure */ 437 #define SADB_X_LIFETIME_ALLOCATIONS 0 438 #define SADB_X_LIFETIME_BYTES 1 439 #define SADB_X_LIFETIME_ADDTIME 2 440 #define SADB_X_LIFETIME_USETIME 3 441 442 /* The rate for SOFT lifetime against HARD one. */ 443 #define PFKEY_SOFT_LIFETIME_RATE 80 444 445 /* Utilities */ 446 #define PFKEY_ALIGN8(a) (1 + (((a) - 1) | (8 - 1))) 447 #define PFKEY_EXTLEN(msg) \ 448 PFKEY_UNUNIT64(((struct sadb_ext *)(msg))->sadb_ext_len) 449 #define PFKEY_ADDR_PREFIX(ext) \ 450 (((struct sadb_address *)(ext))->sadb_address_prefixlen) 451 #define PFKEY_ADDR_PROTO(ext) \ 452 (((struct sadb_address *)(ext))->sadb_address_proto) 453 #define PFKEY_ADDR_SADDR(ext) \ 454 ((struct sockaddr *)((caddr_t)(ext) + sizeof(struct sadb_address))) 455 456 /* in 64bits */ 457 #define PFKEY_UNUNIT64(a) ((a) << 3) 458 #define PFKEY_UNIT64(a) ((a) >> 3) 459 460 #endif /* __PFKEY_V2_H */ 461 462 #endif /* _NET_PFKEYV2_H_ */ 463