The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/net/pfkeyv2.h

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    1 /*      $FreeBSD: releng/8.1/sys/net/pfkeyv2.h 194062 2009-06-12 15:44:35Z vanhu $      */
    2 /*      $KAME: pfkeyv2.h,v 1.37 2003/09/06 05:15:43 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
   77 #define SADB_X_SPDDELETE2 22    /* by policy id */
   78 #define SADB_MAX          22
   79 
   80 struct sadb_msg {
   81   u_int8_t sadb_msg_version;
   82   u_int8_t sadb_msg_type;
   83   u_int8_t sadb_msg_errno;
   84   u_int8_t sadb_msg_satype;
   85   u_int16_t sadb_msg_len;
   86   u_int16_t sadb_msg_reserved;
   87   u_int32_t sadb_msg_seq;
   88   u_int32_t sadb_msg_pid;
   89 };
   90 
   91 struct sadb_ext {
   92   u_int16_t sadb_ext_len;
   93   u_int16_t sadb_ext_type;
   94 };
   95 
   96 struct sadb_sa {
   97   u_int16_t sadb_sa_len;
   98   u_int16_t sadb_sa_exttype;
   99   u_int32_t sadb_sa_spi;
  100   u_int8_t sadb_sa_replay;
  101   u_int8_t sadb_sa_state;
  102   u_int8_t sadb_sa_auth;
  103   u_int8_t sadb_sa_encrypt;
  104   u_int32_t sadb_sa_flags;
  105 };
  106 
  107 struct sadb_lifetime {
  108   u_int16_t sadb_lifetime_len;
  109   u_int16_t sadb_lifetime_exttype;
  110   u_int32_t sadb_lifetime_allocations;
  111   u_int64_t sadb_lifetime_bytes;
  112   u_int64_t sadb_lifetime_addtime;
  113   u_int64_t sadb_lifetime_usetime;
  114 };
  115 
  116 struct sadb_address {
  117   u_int16_t sadb_address_len;
  118   u_int16_t sadb_address_exttype;
  119   u_int8_t sadb_address_proto;
  120   u_int8_t sadb_address_prefixlen;
  121   u_int16_t sadb_address_reserved;
  122 };
  123 
  124 struct sadb_key {
  125   u_int16_t sadb_key_len;
  126   u_int16_t sadb_key_exttype;
  127   u_int16_t sadb_key_bits;
  128   u_int16_t sadb_key_reserved;
  129 };
  130 
  131 struct sadb_ident {
  132   u_int16_t sadb_ident_len;
  133   u_int16_t sadb_ident_exttype;
  134   u_int16_t sadb_ident_type;
  135   u_int16_t sadb_ident_reserved;
  136   u_int64_t sadb_ident_id;
  137 };
  138 
  139 struct sadb_sens {
  140   u_int16_t sadb_sens_len;
  141   u_int16_t sadb_sens_exttype;
  142   u_int32_t sadb_sens_dpd;
  143   u_int8_t sadb_sens_sens_level;
  144   u_int8_t sadb_sens_sens_len;
  145   u_int8_t sadb_sens_integ_level;
  146   u_int8_t sadb_sens_integ_len;
  147   u_int32_t sadb_sens_reserved;
  148 };
  149 
  150 struct sadb_prop {
  151   u_int16_t sadb_prop_len;
  152   u_int16_t sadb_prop_exttype;
  153   u_int8_t sadb_prop_replay;
  154   u_int8_t sadb_prop_reserved[3];
  155 };
  156 
  157 struct sadb_comb {
  158   u_int8_t sadb_comb_auth;
  159   u_int8_t sadb_comb_encrypt;
  160   u_int16_t sadb_comb_flags;
  161   u_int16_t sadb_comb_auth_minbits;
  162   u_int16_t sadb_comb_auth_maxbits;
  163   u_int16_t sadb_comb_encrypt_minbits;
  164   u_int16_t sadb_comb_encrypt_maxbits;
  165   u_int32_t sadb_comb_reserved;
  166   u_int32_t sadb_comb_soft_allocations;
  167   u_int32_t sadb_comb_hard_allocations;
  168   u_int64_t sadb_comb_soft_bytes;
  169   u_int64_t sadb_comb_hard_bytes;
  170   u_int64_t sadb_comb_soft_addtime;
  171   u_int64_t sadb_comb_hard_addtime;
  172   u_int64_t sadb_comb_soft_usetime;
  173   u_int64_t sadb_comb_hard_usetime;
  174 };
  175 
  176 struct sadb_supported {
  177   u_int16_t sadb_supported_len;
  178   u_int16_t sadb_supported_exttype;
  179   u_int32_t sadb_supported_reserved;
  180 };
  181 
  182 struct sadb_alg {
  183   u_int8_t sadb_alg_id;
  184   u_int8_t sadb_alg_ivlen;
  185   u_int16_t sadb_alg_minbits;
  186   u_int16_t sadb_alg_maxbits;
  187   u_int16_t sadb_alg_reserved;
  188 };
  189 
  190 struct sadb_spirange {
  191   u_int16_t sadb_spirange_len;
  192   u_int16_t sadb_spirange_exttype;
  193   u_int32_t sadb_spirange_min;
  194   u_int32_t sadb_spirange_max;
  195   u_int32_t sadb_spirange_reserved;
  196 };
  197 
  198 struct sadb_x_kmprivate {
  199   u_int16_t sadb_x_kmprivate_len;
  200   u_int16_t sadb_x_kmprivate_exttype;
  201   u_int32_t sadb_x_kmprivate_reserved;
  202 };
  203 
  204 /*
  205  * XXX Additional SA Extension.
  206  * mode: tunnel or transport
  207  * reqid: to make SA unique nevertheless the address pair of SA are same.
  208  *        Mainly it's for VPN.
  209  */
  210 struct sadb_x_sa2 {
  211   u_int16_t sadb_x_sa2_len;
  212   u_int16_t sadb_x_sa2_exttype;
  213   u_int8_t sadb_x_sa2_mode;
  214   u_int8_t sadb_x_sa2_reserved1;
  215   u_int16_t sadb_x_sa2_reserved2;
  216   u_int32_t sadb_x_sa2_sequence;        /* lowermost 32bit of sequence number */
  217   u_int32_t sadb_x_sa2_reqid;
  218 };
  219 
  220 /* XXX Policy Extension */
  221 /* sizeof(struct sadb_x_policy) == 16 */
  222 struct sadb_x_policy {
  223   u_int16_t sadb_x_policy_len;
  224   u_int16_t sadb_x_policy_exttype;
  225   u_int16_t sadb_x_policy_type;         /* See policy type of ipsec.h */
  226   u_int8_t sadb_x_policy_dir;           /* direction, see ipsec.h */
  227   u_int8_t sadb_x_policy_reserved;
  228   u_int32_t sadb_x_policy_id;
  229   u_int32_t sadb_x_policy_reserved2;
  230 };
  231 /*
  232  * When policy_type == IPSEC, it is followed by some of
  233  * the ipsec policy request.
  234  * [total length of ipsec policy requests]
  235  *      = (sadb_x_policy_len * sizeof(uint64_t) - sizeof(struct sadb_x_policy))
  236  */
  237 
  238 /* XXX IPsec Policy Request Extension */
  239 /*
  240  * This structure is aligned 8 bytes.
  241  */
  242 struct sadb_x_ipsecrequest {
  243   u_int16_t sadb_x_ipsecrequest_len;    /* structure length in 64 bits. */
  244   u_int16_t sadb_x_ipsecrequest_proto;  /* See ipsec.h */
  245   u_int8_t sadb_x_ipsecrequest_mode;    /* See IPSEC_MODE_XX in ipsec.h. */
  246   u_int8_t sadb_x_ipsecrequest_level;   /* See IPSEC_LEVEL_XX in ipsec.h */
  247   u_int16_t sadb_x_ipsecrequest_reqid;  /* See ipsec.h */
  248 
  249   /*
  250    * followed by source IP address of SA, and immediately followed by
  251    * destination IP address of SA.  These encoded into two of sockaddr
  252    * structure without any padding.  Must set each sa_len exactly.
  253    * Each of length of the sockaddr structure are not aligned to 64bits,
  254    * but sum of x_request and addresses is aligned to 64bits.
  255    */
  256 };
  257 
  258 /* NAT-Traversal type, see RFC 3948 (and drafts). */
  259 /* sizeof(struct sadb_x_nat_t_type) == 8 */
  260 struct sadb_x_nat_t_type {
  261   u_int16_t sadb_x_nat_t_type_len;
  262   u_int16_t sadb_x_nat_t_type_exttype;
  263   u_int8_t sadb_x_nat_t_type_type;
  264   u_int8_t sadb_x_nat_t_type_reserved[3];
  265 };
  266 
  267 /* NAT-Traversal source or destination port. */
  268 /* sizeof(struct sadb_x_nat_t_port) == 8 */
  269 struct sadb_x_nat_t_port { 
  270   u_int16_t sadb_x_nat_t_port_len;
  271   u_int16_t sadb_x_nat_t_port_exttype;
  272   u_int16_t sadb_x_nat_t_port_port;
  273   u_int16_t sadb_x_nat_t_port_reserved;
  274 };
  275 
  276 /* ESP fragmentation size. */
  277 /* sizeof(struct sadb_x_nat_t_frag) == 8 */
  278 struct sadb_x_nat_t_frag {
  279   u_int16_t sadb_x_nat_t_frag_len;
  280   u_int16_t sadb_x_nat_t_frag_exttype;
  281   u_int16_t sadb_x_nat_t_frag_fraglen;
  282   u_int16_t sadb_x_nat_t_frag_reserved;
  283 };
  284 
  285 
  286 #define SADB_EXT_RESERVED             0
  287 #define SADB_EXT_SA                   1
  288 #define SADB_EXT_LIFETIME_CURRENT     2
  289 #define SADB_EXT_LIFETIME_HARD        3
  290 #define SADB_EXT_LIFETIME_SOFT        4
  291 #define SADB_EXT_ADDRESS_SRC          5
  292 #define SADB_EXT_ADDRESS_DST          6
  293 #define SADB_EXT_ADDRESS_PROXY        7
  294 #define SADB_EXT_KEY_AUTH             8
  295 #define SADB_EXT_KEY_ENCRYPT          9
  296 #define SADB_EXT_IDENTITY_SRC         10
  297 #define SADB_EXT_IDENTITY_DST         11
  298 #define SADB_EXT_SENSITIVITY          12
  299 #define SADB_EXT_PROPOSAL             13
  300 #define SADB_EXT_SUPPORTED_AUTH       14
  301 #define SADB_EXT_SUPPORTED_ENCRYPT    15
  302 #define SADB_EXT_SPIRANGE             16
  303 #define SADB_X_EXT_KMPRIVATE          17
  304 #define SADB_X_EXT_POLICY             18
  305 #define SADB_X_EXT_SA2                19
  306 #define SADB_X_EXT_NAT_T_TYPE         20
  307 #define SADB_X_EXT_NAT_T_SPORT        21
  308 #define SADB_X_EXT_NAT_T_DPORT        22
  309 #define SADB_X_EXT_NAT_T_OA           23        /* Deprecated. */
  310 #define SADB_X_EXT_NAT_T_OAI          23        /* Peer's NAT_OA for src of SA. */
  311 #define SADB_X_EXT_NAT_T_OAR          24        /* Peer's NAT_OA for dst of SA. */
  312 #define SADB_X_EXT_NAT_T_FRAG         25        /* Manual MTU override. */
  313 #define SADB_EXT_MAX                  25
  314 
  315 #define SADB_SATYPE_UNSPEC      0
  316 #define SADB_SATYPE_AH          2
  317 #define SADB_SATYPE_ESP         3
  318 #define SADB_SATYPE_RSVP        5
  319 #define SADB_SATYPE_OSPFV2      6
  320 #define SADB_SATYPE_RIPV2       7
  321 #define SADB_SATYPE_MIP         8
  322 #define SADB_X_SATYPE_IPCOMP    9
  323 /*#define SADB_X_SATYPE_POLICY  10      obsolete, do not reuse */
  324 #define SADB_X_SATYPE_TCPSIGNATURE      11
  325 #define SADB_SATYPE_MAX         12
  326 
  327 #define SADB_SASTATE_LARVAL   0
  328 #define SADB_SASTATE_MATURE   1
  329 #define SADB_SASTATE_DYING    2
  330 #define SADB_SASTATE_DEAD     3
  331 #define SADB_SASTATE_MAX      3
  332 
  333 #define SADB_SAFLAGS_PFS      1
  334 
  335 /* RFC2367 numbers - meets RFC2407 */
  336 #define SADB_AALG_NONE          0
  337 #define SADB_AALG_MD5HMAC       2
  338 #define SADB_AALG_SHA1HMAC      3
  339 #define SADB_AALG_MAX           252
  340 /* private allocations - based on RFC2407/IANA assignment */
  341 #define SADB_X_AALG_SHA2_256    5
  342 #define SADB_X_AALG_SHA2_384    6
  343 #define SADB_X_AALG_SHA2_512    7
  344 #define SADB_X_AALG_RIPEMD160HMAC       8
  345 #define SADB_X_AALG_AES_XCBC_MAC        9       /* draft-ietf-ipsec-ciph-aes-xcbc-mac-04 */
  346 /* private allocations should use 249-255 (RFC2407) */
  347 #define SADB_X_AALG_MD5         249     /* Keyed MD5 */
  348 #define SADB_X_AALG_SHA         250     /* Keyed SHA */
  349 #define SADB_X_AALG_NULL        251     /* null authentication */
  350 #define SADB_X_AALG_TCP_MD5     252     /* Keyed TCP-MD5 (RFC2385) */
  351 
  352 /* RFC2367 numbers - meets RFC2407 */
  353 #define SADB_EALG_NONE          0
  354 #define SADB_EALG_DESCBC        2
  355 #define SADB_EALG_3DESCBC       3
  356 #define SADB_EALG_NULL          11
  357 #define SADB_EALG_MAX           250
  358 /* private allocations - based on RFC2407/IANA assignment */
  359 #define SADB_X_EALG_CAST128CBC  6
  360 #define SADB_X_EALG_BLOWFISHCBC 7
  361 #define SADB_X_EALG_RIJNDAELCBC 12
  362 #define SADB_X_EALG_AES         12
  363 /* private allocations - based on RFC4312/IANA assignment */
  364 #define SADB_X_EALG_CAMELLIACBC         22
  365 /* private allocations should use 249-255 (RFC2407) */
  366 #define SADB_X_EALG_SKIPJACK    249     /*250*/ /* for IPSEC */
  367 #define SADB_X_EALG_AESCTR      250     /*249*/ /* draft-ietf-ipsec-ciph-aes-ctr-03 */
  368 
  369 /* private allocations - based on RFC2407/IANA assignment */
  370 #define SADB_X_CALG_NONE        0
  371 #define SADB_X_CALG_OUI         1
  372 #define SADB_X_CALG_DEFLATE     2
  373 #define SADB_X_CALG_LZS         3
  374 #define SADB_X_CALG_MAX         4
  375 
  376 #define SADB_IDENTTYPE_RESERVED   0
  377 #define SADB_IDENTTYPE_PREFIX     1
  378 #define SADB_IDENTTYPE_FQDN       2
  379 #define SADB_IDENTTYPE_USERFQDN   3
  380 #define SADB_X_IDENTTYPE_ADDR     4
  381 #define SADB_IDENTTYPE_MAX        4
  382 
  383 /* `flags' in sadb_sa structure holds followings */
  384 #define SADB_X_EXT_NONE         0x0000  /* i.e. new format. */
  385 #define SADB_X_EXT_OLD          0x0001  /* old format. */
  386 
  387 #define SADB_X_EXT_IV4B         0x0010  /* IV length of 4 bytes in use */
  388 #define SADB_X_EXT_DERIV        0x0020  /* DES derived */
  389 #define SADB_X_EXT_CYCSEQ       0x0040  /* allowing to cyclic sequence. */
  390 
  391         /* three of followings are exclusive flags each them */
  392 #define SADB_X_EXT_PSEQ         0x0000  /* sequencial padding for ESP */
  393 #define SADB_X_EXT_PRAND        0x0100  /* random padding for ESP */
  394 #define SADB_X_EXT_PZERO        0x0200  /* zero padding for ESP */
  395 #define SADB_X_EXT_PMASK        0x0300  /* mask for padding flag */
  396 
  397 #if 1
  398 #define SADB_X_EXT_RAWCPI       0x0080  /* use well known CPI (IPComp) */
  399 #endif
  400 
  401 #define SADB_KEY_FLAGS_MAX      0x0fff
  402 
  403 /* SPI size for PF_KEYv2 */
  404 #define PFKEY_SPI_SIZE  sizeof(u_int32_t)
  405 
  406 /* Identifier for menber of lifetime structure */
  407 #define SADB_X_LIFETIME_ALLOCATIONS     0
  408 #define SADB_X_LIFETIME_BYTES           1
  409 #define SADB_X_LIFETIME_ADDTIME         2
  410 #define SADB_X_LIFETIME_USETIME         3
  411 
  412 /* The rate for SOFT lifetime against HARD one. */
  413 #define PFKEY_SOFT_LIFETIME_RATE        80
  414 
  415 /* Utilities */
  416 #define PFKEY_ALIGN8(a) (1 + (((a) - 1) | (8 - 1)))
  417 #define PFKEY_EXTLEN(msg) \
  418         PFKEY_UNUNIT64(((struct sadb_ext *)(msg))->sadb_ext_len)
  419 #define PFKEY_ADDR_PREFIX(ext) \
  420         (((struct sadb_address *)(ext))->sadb_address_prefixlen)
  421 #define PFKEY_ADDR_PROTO(ext) \
  422         (((struct sadb_address *)(ext))->sadb_address_proto)
  423 #define PFKEY_ADDR_SADDR(ext) \
  424         ((struct sockaddr *)((caddr_t)(ext) + sizeof(struct sadb_address)))
  425 
  426 /* in 64bits */
  427 #define PFKEY_UNUNIT64(a)       ((a) << 3)
  428 #define PFKEY_UNIT64(a)         ((a) >> 3)
  429 
  430 #endif /* __PFKEY_V2_H */
  431 
  432 #endif /* _NET_PFKEYV2_H_ */

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