sys/net/pfkeyv2.h

   1 /*      $NetBSD: pfkeyv2.h,v 1.25 2005/12/10 23:21:39 elad Exp $        */
   2 /*      $KAME: pfkeyv2.h,v 1.36 2003/07/25 09:33:37 itojun Exp $        */
   3
   4 /*
   5  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. Neither the name of the project nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32
  33 /*
  34  * This file has been derived rfc 2367,
  35  * And added some flags of SADB_KEY_FLAGS_ as SADB_X_EXT_.
  36  *      sakane@ydc.co.jp
  37  */
  38
  39 #ifndef _NET_PFKEYV2_H_
  40 #define _NET_PFKEYV2_H_
  41
  42 /*
  43 This file defines structures and symbols for the PF_KEY Version 2
  44 key management interface. It was written at the U.S. Naval Research
  45 Laboratory. This file is in the public domain. The authors ask that
  46 you leave this credit intact on any copies of this file.
  47 */
  48 #ifndef __PFKEY_V2_H
  49 #define __PFKEY_V2_H 1
  50
  51 #define PF_KEY_V2 2
  52 #define PFKEYV2_REVISION        199806L
  53
  54 #define SADB_RESERVED    0
  55 #define SADB_GETSPI      1
  56 #define SADB_UPDATE      2
  57 #define SADB_ADD         3
  58 #define SADB_DELETE      4
  59 #define SADB_GET         5
  60 #define SADB_ACQUIRE     6
  61 #define SADB_REGISTER    7
  62 #define SADB_EXPIRE      8
  63 #define SADB_FLUSH       9
  64 #define SADB_DUMP        10
  65 #define SADB_X_PROMISC   11
  66 #define SADB_X_PCHANGE   12
  67
  68 #define SADB_X_SPDUPDATE  13
  69 #define SADB_X_SPDADD     14
  70 #define SADB_X_SPDDELETE  15    /* by policy index */
  71 #define SADB_X_SPDGET     16
  72 #define SADB_X_SPDACQUIRE 17
  73 #define SADB_X_SPDDUMP    18
  74 #define SADB_X_SPDFLUSH   19
  75 #define SADB_X_SPDSETIDX  20
  76 #define SADB_X_SPDEXPIRE  21    /* not yet */
  77 #define SADB_X_SPDDELETE2 22    /* by policy id */
  78 #define SADB_X_NAT_T_NEW_MAPPING 23
  79 #if 0
  80 #define SADB_X_MIGRATE    24    /* KAME */
  81 #endif
  82 #define SADB_MAX          23
  83
  84 struct sadb_msg {
  85   uint8_t sadb_msg_version;
  86   uint8_t sadb_msg_type;
  87   uint8_t sadb_msg_errno;
  88   uint8_t sadb_msg_satype;
  89   uint16_t sadb_msg_len;
  90   uint16_t sadb_msg_reserved;
  91   uint32_t sadb_msg_seq;
  92   uint32_t sadb_msg_pid;
  93 };
  94
  95 struct sadb_ext {
  96   uint16_t sadb_ext_len;
  97   uint16_t sadb_ext_type;
  98 };
  99
 100 struct sadb_sa {
 101   uint16_t sadb_sa_len;
 102   uint16_t sadb_sa_exttype;
 103   uint32_t sadb_sa_spi;
 104   uint8_t sadb_sa_replay;
 105   uint8_t sadb_sa_state;
 106   uint8_t sadb_sa_auth;
 107   uint8_t sadb_sa_encrypt;
 108   uint32_t sadb_sa_flags;
 109 };
 110
 111 struct sadb_lifetime {
 112   uint16_t sadb_lifetime_len;
 113   uint16_t sadb_lifetime_exttype;
 114   uint32_t sadb_lifetime_allocations;
 115   uint64_t sadb_lifetime_bytes;
 116   uint64_t sadb_lifetime_addtime;
 117   uint64_t sadb_lifetime_usetime;
 118 };
 119
 120 struct sadb_address {
 121   uint16_t sadb_address_len;
 122   uint16_t sadb_address_exttype;
 123   uint8_t sadb_address_proto;
 124   uint8_t sadb_address_prefixlen;
 125   uint16_t sadb_address_reserved;
 126 };
 127
 128 struct sadb_key {
 129   uint16_t sadb_key_len;
 130   uint16_t sadb_key_exttype;
 131   uint16_t sadb_key_bits;
 132   uint16_t sadb_key_reserved;
 133 };
 134
 135 struct sadb_ident {
 136   uint16_t sadb_ident_len;
 137   uint16_t sadb_ident_exttype;
 138   uint16_t sadb_ident_type;
 139   uint16_t sadb_ident_reserved;
 140   uint64_t sadb_ident_id;
 141 };
 142
 143 struct sadb_sens {
 144   uint16_t sadb_sens_len;
 145   uint16_t sadb_sens_exttype;
 146   uint32_t sadb_sens_dpd;
 147   uint8_t sadb_sens_sens_level;
 148   uint8_t sadb_sens_sens_len;
 149   uint8_t sadb_sens_integ_level;
 150   uint8_t sadb_sens_integ_len;
 151   uint32_t sadb_sens_reserved;
 152 };
 153
 154 struct sadb_prop {
 155   uint16_t sadb_prop_len;
 156   uint16_t sadb_prop_exttype;
 157   uint8_t sadb_prop_replay;
 158   uint8_t sadb_prop_reserved[3];
 159 };
 160
 161 struct sadb_comb {
 162   uint8_t sadb_comb_auth;
 163   uint8_t sadb_comb_encrypt;
 164   uint16_t sadb_comb_flags;
 165   uint16_t sadb_comb_auth_minbits;
 166   uint16_t sadb_comb_auth_maxbits;
 167   uint16_t sadb_comb_encrypt_minbits;
 168   uint16_t sadb_comb_encrypt_maxbits;
 169   uint32_t sadb_comb_reserved;
 170   uint32_t sadb_comb_soft_allocations;
 171   uint32_t sadb_comb_hard_allocations;
 172   uint64_t sadb_comb_soft_bytes;
 173   uint64_t sadb_comb_hard_bytes;
 174   uint64_t sadb_comb_soft_addtime;
 175   uint64_t sadb_comb_hard_addtime;
 176   uint64_t sadb_comb_soft_usetime;
 177   uint64_t sadb_comb_hard_usetime;
 178 };
 179
 180 struct sadb_supported {
 181   uint16_t sadb_supported_len;
 182   uint16_t sadb_supported_exttype;
 183   uint32_t sadb_supported_reserved;
 184 };
 185
 186 struct sadb_alg {
 187   uint8_t sadb_alg_id;
 188   uint8_t sadb_alg_ivlen;
 189   uint16_t sadb_alg_minbits;
 190   uint16_t sadb_alg_maxbits;
 191   uint16_t sadb_alg_reserved;
 192 };
 193
 194 struct sadb_spirange {
 195   uint16_t sadb_spirange_len;
 196   uint16_t sadb_spirange_exttype;
 197   uint32_t sadb_spirange_min;
 198   uint32_t sadb_spirange_max;
 199   uint32_t sadb_spirange_reserved;
 200 };
 201
 202 struct sadb_x_kmprivate {
 203   uint16_t sadb_x_kmprivate_len;
 204   uint16_t sadb_x_kmprivate_exttype;
 205   uint32_t sadb_x_kmprivate_reserved;
 206 };
 207
 208 /*
 209  * XXX Additional SA Extension.
 210  * mode: tunnel or transport
 211  * reqid: to make SA unique nevertheless the address pair of SA are same.
 212  *        Mainly it's for VPN.
 213  */
 214 struct sadb_x_sa2 {
 215   uint16_t sadb_x_sa2_len;
 216   uint16_t sadb_x_sa2_exttype;
 217   uint8_t sadb_x_sa2_mode;
 218   uint8_t sadb_x_sa2_reserved1;
 219   uint16_t sadb_x_sa2_reserved2;
 220   uint32_t sadb_x_sa2_sequence;
 221   uint32_t sadb_x_sa2_reqid;            /* topmost 16bits are always 0 */
 222 };
 223
 224 /* XXX Policy Extension */
 225 /* sizeof(struct sadb_x_policy) == 16 */
 226 struct sadb_x_policy {
 227   uint16_t sadb_x_policy_len;
 228   uint16_t sadb_x_policy_exttype;
 229   uint16_t sadb_x_policy_type;          /* See policy type of ipsec.h */
 230   uint8_t sadb_x_policy_dir;            /* direction, see ipsec.h */
 231   uint8_t sadb_x_policy_reserved;
 232   uint32_t sadb_x_policy_id;
 233   uint32_t sadb_x_policy_reserved2;
 234 };
 235 /*
 236  * When policy_type == IPSEC, it is followed by some of
 237  * the ipsec policy request.
 238  * [total length of ipsec policy requests]
 239  *      = (sadb_x_policy_len * sizeof(uint64_t) - sizeof(struct sadb_x_policy))
 240  */
 241
 242 /* XXX IPsec Policy Request Extension */
 243 /*
 244  * This structure is aligned 8 bytes.
 245  */
 246 struct sadb_x_ipsecrequest {
 247   uint16_t sadb_x_ipsecrequest_len;     /* structure length in 64 bits. */
 248   uint16_t sadb_x_ipsecrequest_proto;   /* See ipsec.h */
 249   uint8_t sadb_x_ipsecrequest_mode;     /* See IPSEC_MODE_XX in ipsec.h. */
 250   uint8_t sadb_x_ipsecrequest_level;    /* See IPSEC_LEVEL_XX in ipsec.h */
 251   uint16_t sadb_x_ipsecrequest_reqid;   /* See ipsec.h */
 252
 253   /*
 254    * followed by source IP address of SA, and immediately followed by
 255    * destination IP address of SA.  These encoded into two of sockaddr
 256    * structure without any padding.  Must set each sa_len exactly.
 257    * Each of length of the sockaddr structure are not aligned to 64bits,
 258    * but sum of x_request and addresses is aligned to 64bits.
 259    */
 260 };
 261
 262 /* NAT traversal type, see draft-ietf-ipsec-udp-encaps-06 */
 263 /* sizeof(struct sadb_x_nat_t_type) == 8 */
 264 struct sadb_x_nat_t_type {
 265   uint16_t sadb_x_nat_t_type_len;
 266   uint16_t sadb_x_nat_t_type_exttype;
 267   uint8_t sadb_x_nat_t_type_type;
 268   uint8_t sadb_x_nat_t_type_reserved[3];
 269 };
 270
 271 /* NAT traversal source or destination port */
 272 /* sizeof(struct sadb_x_nat_t_port) == 8 */
 273 struct sadb_x_nat_t_port {
 274   uint16_t sadb_x_nat_t_port_len;
 275   uint16_t sadb_x_nat_t_port_exttype;
 276   uint16_t sadb_x_nat_t_port_port;
 277   uint16_t sadb_x_nat_t_port_reserved;
 278 };
 279
 280 /* ESP fragmentation size */
 281 /* sizeof(struct sadb_x_nat_t_frag) == 8 */
 282 struct sadb_x_nat_t_frag {
 283   uint16_t sadb_x_nat_t_frag_len;
 284   uint16_t sadb_x_nat_t_frag_exttype;
 285   uint16_t sadb_x_nat_t_frag_fraglen;
 286   uint16_t sadb_x_nat_t_frag_reserved;
 287 };
 288
 289
 290 #define SADB_EXT_RESERVED             0
 291 #define SADB_EXT_SA                   1
 292 #define SADB_EXT_LIFETIME_CURRENT     2
 293 #define SADB_EXT_LIFETIME_HARD        3
 294 #define SADB_EXT_LIFETIME_SOFT        4
 295 #define SADB_EXT_ADDRESS_SRC          5
 296 #define SADB_EXT_ADDRESS_DST          6
 297 #define SADB_EXT_ADDRESS_PROXY        7
 298 #define SADB_EXT_KEY_AUTH             8
 299 #define SADB_EXT_KEY_ENCRYPT          9
 300 #define SADB_EXT_IDENTITY_SRC         10
 301 #define SADB_EXT_IDENTITY_DST         11
 302 #define SADB_EXT_SENSITIVITY          12
 303 #define SADB_EXT_PROPOSAL             13
 304 #define SADB_EXT_SUPPORTED_AUTH       14
 305 #define SADB_EXT_SUPPORTED_ENCRYPT    15
 306 #define SADB_EXT_SPIRANGE             16
 307 #define SADB_X_EXT_KMPRIVATE          17
 308 #define SADB_X_EXT_POLICY             18
 309 #define SADB_X_EXT_SA2                19
 310 #define SADB_X_EXT_NAT_T_TYPE         20
 311 #define SADB_X_EXT_NAT_T_SPORT        21
 312 #define SADB_X_EXT_NAT_T_DPORT        22
 313 #define SADB_X_EXT_NAT_T_OA           23
 314 #define SADB_X_EXT_NAT_T_FRAG         24
 315 #if 0
 316 #define SADB_X_EXT_TAG                25        /* KAME */
 317 #define SADB_X_EXT_SA3                26        /* KAME */
 318 #define SADB_X_EXT_PACKET             27        /* KAME */
 319 #endif
 320 #define SADB_EXT_MAX                  24
 321
 322 #define SADB_SATYPE_UNSPEC      0
 323 #define SADB_SATYPE_AH          2
 324 #define SADB_SATYPE_ESP         3
 325 #define SADB_SATYPE_RSVP        5
 326 #define SADB_SATYPE_OSPFV2      6
 327 #define SADB_SATYPE_RIPV2       7
 328 #define SADB_SATYPE_MIP         8
 329 #define SADB_X_SATYPE_IPCOMP    9
 330 /*#define SADB_X_SATYPE_POLICY  10      obsolete, do not reuse */
 331 #define SADB_X_SATYPE_TCPSIGNATURE      11
 332 #define SADB_SATYPE_MAX         12
 333
 334 #define SADB_SASTATE_LARVAL   0
 335 #define SADB_SASTATE_MATURE   1
 336 #define SADB_SASTATE_DYING    2
 337 #define SADB_SASTATE_DEAD     3
 338 #define SADB_SASTATE_MAX      3
 339
 340 #define SADB_SAFLAGS_PFS      1
 341
 342 /* RFC2367 numbers - meets RFC2407 */
 343 #define SADB_AALG_NONE          0
 344 #define SADB_AALG_MD5HMAC       2
 345 #define SADB_AALG_SHA1HMAC      3
 346 #define SADB_AALG_MAX           251
 347 /* private allocations - based on RFC2407/IANA assignment */
 348 #define SADB_X_AALG_SHA2_256    5
 349 #define SADB_X_AALG_SHA2_384    6
 350 #define SADB_X_AALG_SHA2_512    7
 351 #define SADB_X_AALG_RIPEMD160HMAC 8
 352 #define SADB_X_AALG_AES_XCBC_MAC 9 /* draft-ietf-ipsec-ciph-aes-xcbc-mac-04 */
 353 /* private allocations should use 249-255 (RFC2407) */
 354 #define SADB_X_AALG_MD5         249     /* Keyed MD5 */
 355 #define SADB_X_AALG_SHA         250     /* Keyed SHA */
 356 #define SADB_X_AALG_NULL        251     /* null authentication */
 357 #define SADB_X_AALG_TCP_MD5     252     /* Keyed TCP-MD5 (RFC2385) */
 358
 359 /* RFC2367 numbers - meets RFC2407 */
 360 #define SADB_EALG_NONE          0
 361 #define SADB_EALG_DESCBC        2
 362 #define SADB_EALG_3DESCBC       3
 363 #define SADB_EALG_NULL          11
 364 #define SADB_EALG_MAX           250
 365 /* private allocations - based on RFC2407/IANA assignment */
 366 #define SADB_X_EALG_CAST128CBC  6
 367 #define SADB_X_EALG_BLOWFISHCBC 7
 368 #define SADB_X_EALG_RIJNDAELCBC 12
 369 #define SADB_X_EALG_AES         12
 370 #define SADB_X_EALG_AESCTR      13
 371 /* private allocations should use 249-255 (RFC2407) */
 372 #define SADB_X_EALG_SKIPJACK    250
 373
 374 /* private allocations - based on RFC2407/IANA assignment */
 375 #define SADB_X_CALG_NONE        0
 376 #define SADB_X_CALG_OUI         1
 377 #define SADB_X_CALG_DEFLATE     2
 378 #define SADB_X_CALG_LZS         3
 379 #define SADB_X_CALG_MAX         4
 380
 381 #define SADB_IDENTTYPE_RESERVED   0
 382 #define SADB_IDENTTYPE_PREFIX     1
 383 #define SADB_IDENTTYPE_FQDN       2
 384 #define SADB_IDENTTYPE_USERFQDN   3
 385 #define SADB_X_IDENTTYPE_ADDR     4
 386 #define SADB_IDENTTYPE_MAX        4
 387
 388 /* `flags' in sadb_sa structure holds followings */
 389 #define SADB_X_EXT_NONE         0x0000  /* i.e. new format. */
 390 #define SADB_X_EXT_OLD          0x0001  /* old format. */
 391
 392 #define SADB_X_EXT_IV4B         0x0010  /* IV length of 4 bytes in use */
 393 #define SADB_X_EXT_DERIV        0x0020  /* DES derived */
 394 #define SADB_X_EXT_CYCSEQ       0x0040  /* allowing to cyclic sequence. */
 395
 396         /* three of followings are exclusive flags each them */
 397 #define SADB_X_EXT_PSEQ         0x0000  /* sequencial padding for ESP */
 398 #define SADB_X_EXT_PRAND        0x0100  /* random padding for ESP */
 399 #define SADB_X_EXT_PZERO        0x0200  /* zero padding for ESP */
 400 #define SADB_X_EXT_PMASK        0x0300  /* mask for padding flag */
 401
 402 #if 1
 403 #define SADB_X_EXT_RAWCPI       0x0080  /* use well known CPI (IPComp) */
 404 #endif
 405
 406 #define SADB_KEY_FLAGS_MAX      0x0fff
 407
 408 /* SPI size for PF_KEYv2 */
 409 #define PFKEY_SPI_SIZE  sizeof(uint32_t)
 410
 411 /* Identifier for menber of lifetime structure */
 412 #define SADB_X_LIFETIME_ALLOCATIONS     0
 413 #define SADB_X_LIFETIME_BYTES           1
 414 #define SADB_X_LIFETIME_ADDTIME         2
 415 #define SADB_X_LIFETIME_USETIME         3
 416
 417 /* The rate for SOFT lifetime against HARD one. */
 418 #define PFKEY_SOFT_LIFETIME_RATE        80
 419
 420 /* Utilities */
 421 #define PFKEY_ALIGN8(a) (1 + (((a) - 1) | (8 - 1)))
 422 #define PFKEY_EXTLEN(msg) \
 423         PFKEY_UNUNIT64(((struct sadb_ext *)(void *)(msg))->sadb_ext_len)
 424 #define PFKEY_ADDR_PREFIX(ext) \
 425         (((struct sadb_address *)(void *)(ext))->sadb_address_prefixlen)
 426 #define PFKEY_ADDR_PROTO(ext) \
 427         (((struct sadb_address *)(void *)(ext))->sadb_address_proto)
 428 #define PFKEY_ADDR_SADDR(ext) \
 429         ((struct sockaddr *)(void *)((char *)(void *)(ext) + \
 430         sizeof(struct sadb_address)))
 431
 432 /* in 64bits */
 433 #define PFKEY_UNUNIT64(a)       ((a) << 3)
 434 #define PFKEY_UNIT64(a)         ((a) >> 3)
 435
 436 #endif /* __PFKEY_V2_H */
 437
 438 #endif /* !_NET_PFKEYV2_H_ */