1 #ifndef _LINUX_XFRM_H 2 #define _LINUX_XFRM_H 3 4 #include <linux/types.h> 5 6 /* All of the structures in this file may not change size as they are 7 * passed into the kernel from userspace via netlink sockets. 8 */ 9 10 /* Structure to encapsulate addresses. I do not want to use 11 * "standard" structure. My apologies. 12 */ 13 typedef union { 14 __be32 a4; 15 __be32 a6[4]; 16 } xfrm_address_t; 17 18 /* Ident of a specific xfrm_state. It is used on input to lookup 19 * the state by (spi,daddr,ah/esp) or to store information about 20 * spi, protocol and tunnel address on output. 21 */ 22 struct xfrm_id { 23 xfrm_address_t daddr; 24 __be32 spi; 25 __u8 proto; 26 }; 27 28 struct xfrm_sec_ctx { 29 __u8 ctx_doi; 30 __u8 ctx_alg; 31 __u16 ctx_len; 32 __u32 ctx_sid; 33 char ctx_str[0]; 34 }; 35 36 /* Security Context Domains of Interpretation */ 37 #define XFRM_SC_DOI_RESERVED 0 38 #define XFRM_SC_DOI_LSM 1 39 40 /* Security Context Algorithms */ 41 #define XFRM_SC_ALG_RESERVED 0 42 #define XFRM_SC_ALG_SELINUX 1 43 44 /* Selector, used as selector both on policy rules (SPD) and SAs. */ 45 46 struct xfrm_selector { 47 xfrm_address_t daddr; 48 xfrm_address_t saddr; 49 __be16 dport; 50 __be16 dport_mask; 51 __be16 sport; 52 __be16 sport_mask; 53 __u16 family; 54 __u8 prefixlen_d; 55 __u8 prefixlen_s; 56 __u8 proto; 57 int ifindex; 58 __kernel_uid32_t user; 59 }; 60 61 #define XFRM_INF (~(__u64)0) 62 63 struct xfrm_lifetime_cfg { 64 __u64 soft_byte_limit; 65 __u64 hard_byte_limit; 66 __u64 soft_packet_limit; 67 __u64 hard_packet_limit; 68 __u64 soft_add_expires_seconds; 69 __u64 hard_add_expires_seconds; 70 __u64 soft_use_expires_seconds; 71 __u64 hard_use_expires_seconds; 72 }; 73 74 struct xfrm_lifetime_cur { 75 __u64 bytes; 76 __u64 packets; 77 __u64 add_time; 78 __u64 use_time; 79 }; 80 81 struct xfrm_replay_state { 82 __u32 oseq; 83 __u32 seq; 84 __u32 bitmap; 85 }; 86 87 struct xfrm_replay_state_esn { 88 unsigned int bmp_len; 89 __u32 oseq; 90 __u32 seq; 91 __u32 oseq_hi; 92 __u32 seq_hi; 93 __u32 replay_window; 94 __u32 bmp[0]; 95 }; 96 97 struct xfrm_algo { 98 char alg_name[64]; 99 unsigned int alg_key_len; /* in bits */ 100 char alg_key[0]; 101 }; 102 103 struct xfrm_algo_auth { 104 char alg_name[64]; 105 unsigned int alg_key_len; /* in bits */ 106 unsigned int alg_trunc_len; /* in bits */ 107 char alg_key[0]; 108 }; 109 110 struct xfrm_algo_aead { 111 char alg_name[64]; 112 unsigned int alg_key_len; /* in bits */ 113 unsigned int alg_icv_len; /* in bits */ 114 char alg_key[0]; 115 }; 116 117 struct xfrm_stats { 118 __u32 replay_window; 119 __u32 replay; 120 __u32 integrity_failed; 121 }; 122 123 enum { 124 XFRM_POLICY_TYPE_MAIN = 0, 125 XFRM_POLICY_TYPE_SUB = 1, 126 XFRM_POLICY_TYPE_MAX = 2, 127 XFRM_POLICY_TYPE_ANY = 255 128 }; 129 130 enum { 131 XFRM_POLICY_IN = 0, 132 XFRM_POLICY_OUT = 1, 133 XFRM_POLICY_FWD = 2, 134 XFRM_POLICY_MASK = 3, 135 XFRM_POLICY_MAX = 3 136 }; 137 138 enum { 139 XFRM_SHARE_ANY, /* No limitations */ 140 XFRM_SHARE_SESSION, /* For this session only */ 141 XFRM_SHARE_USER, /* For this user only */ 142 XFRM_SHARE_UNIQUE /* Use once */ 143 }; 144 145 #define XFRM_MODE_TRANSPORT 0 146 #define XFRM_MODE_TUNNEL 1 147 #define XFRM_MODE_ROUTEOPTIMIZATION 2 148 #define XFRM_MODE_IN_TRIGGER 3 149 #define XFRM_MODE_BEET 4 150 #define XFRM_MODE_MAX 5 151 152 /* Netlink configuration messages. */ 153 enum { 154 XFRM_MSG_BASE = 0x10, 155 156 XFRM_MSG_NEWSA = 0x10, 157 #define XFRM_MSG_NEWSA XFRM_MSG_NEWSA 158 XFRM_MSG_DELSA, 159 #define XFRM_MSG_DELSA XFRM_MSG_DELSA 160 XFRM_MSG_GETSA, 161 #define XFRM_MSG_GETSA XFRM_MSG_GETSA 162 163 XFRM_MSG_NEWPOLICY, 164 #define XFRM_MSG_NEWPOLICY XFRM_MSG_NEWPOLICY 165 XFRM_MSG_DELPOLICY, 166 #define XFRM_MSG_DELPOLICY XFRM_MSG_DELPOLICY 167 XFRM_MSG_GETPOLICY, 168 #define XFRM_MSG_GETPOLICY XFRM_MSG_GETPOLICY 169 170 XFRM_MSG_ALLOCSPI, 171 #define XFRM_MSG_ALLOCSPI XFRM_MSG_ALLOCSPI 172 XFRM_MSG_ACQUIRE, 173 #define XFRM_MSG_ACQUIRE XFRM_MSG_ACQUIRE 174 XFRM_MSG_EXPIRE, 175 #define XFRM_MSG_EXPIRE XFRM_MSG_EXPIRE 176 177 XFRM_MSG_UPDPOLICY, 178 #define XFRM_MSG_UPDPOLICY XFRM_MSG_UPDPOLICY 179 XFRM_MSG_UPDSA, 180 #define XFRM_MSG_UPDSA XFRM_MSG_UPDSA 181 182 XFRM_MSG_POLEXPIRE, 183 #define XFRM_MSG_POLEXPIRE XFRM_MSG_POLEXPIRE 184 185 XFRM_MSG_FLUSHSA, 186 #define XFRM_MSG_FLUSHSA XFRM_MSG_FLUSHSA 187 XFRM_MSG_FLUSHPOLICY, 188 #define XFRM_MSG_FLUSHPOLICY XFRM_MSG_FLUSHPOLICY 189 190 XFRM_MSG_NEWAE, 191 #define XFRM_MSG_NEWAE XFRM_MSG_NEWAE 192 XFRM_MSG_GETAE, 193 #define XFRM_MSG_GETAE XFRM_MSG_GETAE 194 195 XFRM_MSG_REPORT, 196 #define XFRM_MSG_REPORT XFRM_MSG_REPORT 197 198 XFRM_MSG_MIGRATE, 199 #define XFRM_MSG_MIGRATE XFRM_MSG_MIGRATE 200 201 XFRM_MSG_NEWSADINFO, 202 #define XFRM_MSG_NEWSADINFO XFRM_MSG_NEWSADINFO 203 XFRM_MSG_GETSADINFO, 204 #define XFRM_MSG_GETSADINFO XFRM_MSG_GETSADINFO 205 206 XFRM_MSG_NEWSPDINFO, 207 #define XFRM_MSG_NEWSPDINFO XFRM_MSG_NEWSPDINFO 208 XFRM_MSG_GETSPDINFO, 209 #define XFRM_MSG_GETSPDINFO XFRM_MSG_GETSPDINFO 210 211 XFRM_MSG_MAPPING, 212 #define XFRM_MSG_MAPPING XFRM_MSG_MAPPING 213 __XFRM_MSG_MAX 214 }; 215 #define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1) 216 217 #define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE) 218 219 /* 220 * Generic LSM security context for comunicating to user space 221 * NOTE: Same format as sadb_x_sec_ctx 222 */ 223 struct xfrm_user_sec_ctx { 224 __u16 len; 225 __u16 exttype; 226 __u8 ctx_alg; /* LSMs: e.g., selinux == 1 */ 227 __u8 ctx_doi; 228 __u16 ctx_len; 229 }; 230 231 struct xfrm_user_tmpl { 232 struct xfrm_id id; 233 __u16 family; 234 xfrm_address_t saddr; 235 __u32 reqid; 236 __u8 mode; 237 __u8 share; 238 __u8 optional; 239 __u32 aalgos; 240 __u32 ealgos; 241 __u32 calgos; 242 }; 243 244 struct xfrm_encap_tmpl { 245 __u16 encap_type; 246 __be16 encap_sport; 247 __be16 encap_dport; 248 xfrm_address_t encap_oa; 249 }; 250 251 /* AEVENT flags */ 252 enum xfrm_ae_ftype_t { 253 XFRM_AE_UNSPEC, 254 XFRM_AE_RTHR=1, /* replay threshold*/ 255 XFRM_AE_RVAL=2, /* replay value */ 256 XFRM_AE_LVAL=4, /* lifetime value */ 257 XFRM_AE_ETHR=8, /* expiry timer threshold */ 258 XFRM_AE_CR=16, /* Event cause is replay update */ 259 XFRM_AE_CE=32, /* Event cause is timer expiry */ 260 XFRM_AE_CU=64, /* Event cause is policy update */ 261 __XFRM_AE_MAX 262 263 #define XFRM_AE_MAX (__XFRM_AE_MAX - 1) 264 }; 265 266 struct xfrm_userpolicy_type { 267 __u8 type; 268 __u16 reserved1; 269 __u8 reserved2; 270 }; 271 272 /* Netlink message attributes. */ 273 enum xfrm_attr_type_t { 274 XFRMA_UNSPEC, 275 XFRMA_ALG_AUTH, /* struct xfrm_algo */ 276 XFRMA_ALG_CRYPT, /* struct xfrm_algo */ 277 XFRMA_ALG_COMP, /* struct xfrm_algo */ 278 XFRMA_ENCAP, /* struct xfrm_algo + struct xfrm_encap_tmpl */ 279 XFRMA_TMPL, /* 1 or more struct xfrm_user_tmpl */ 280 XFRMA_SA, /* struct xfrm_usersa_info */ 281 XFRMA_POLICY, /*struct xfrm_userpolicy_info */ 282 XFRMA_SEC_CTX, /* struct xfrm_sec_ctx */ 283 XFRMA_LTIME_VAL, 284 XFRMA_REPLAY_VAL, 285 XFRMA_REPLAY_THRESH, 286 XFRMA_ETIMER_THRESH, 287 XFRMA_SRCADDR, /* xfrm_address_t */ 288 XFRMA_COADDR, /* xfrm_address_t */ 289 XFRMA_LASTUSED, /* unsigned long */ 290 XFRMA_POLICY_TYPE, /* struct xfrm_userpolicy_type */ 291 XFRMA_MIGRATE, 292 XFRMA_ALG_AEAD, /* struct xfrm_algo_aead */ 293 XFRMA_KMADDRESS, /* struct xfrm_user_kmaddress */ 294 XFRMA_ALG_AUTH_TRUNC, /* struct xfrm_algo_auth */ 295 XFRMA_MARK, /* struct xfrm_mark */ 296 XFRMA_TFCPAD, /* __u32 */ 297 XFRMA_REPLAY_ESN_VAL, /* struct xfrm_replay_esn */ 298 __XFRMA_MAX 299 300 #define XFRMA_MAX (__XFRMA_MAX - 1) 301 }; 302 303 struct xfrm_mark { 304 __u32 v; /* value */ 305 __u32 m; /* mask */ 306 }; 307 308 enum xfrm_sadattr_type_t { 309 XFRMA_SAD_UNSPEC, 310 XFRMA_SAD_CNT, 311 XFRMA_SAD_HINFO, 312 __XFRMA_SAD_MAX 313 314 #define XFRMA_SAD_MAX (__XFRMA_SAD_MAX - 1) 315 }; 316 317 struct xfrmu_sadhinfo { 318 __u32 sadhcnt; /* current hash bkts */ 319 __u32 sadhmcnt; /* max allowed hash bkts */ 320 }; 321 322 enum xfrm_spdattr_type_t { 323 XFRMA_SPD_UNSPEC, 324 XFRMA_SPD_INFO, 325 XFRMA_SPD_HINFO, 326 __XFRMA_SPD_MAX 327 328 #define XFRMA_SPD_MAX (__XFRMA_SPD_MAX - 1) 329 }; 330 331 struct xfrmu_spdinfo { 332 __u32 incnt; 333 __u32 outcnt; 334 __u32 fwdcnt; 335 __u32 inscnt; 336 __u32 outscnt; 337 __u32 fwdscnt; 338 }; 339 340 struct xfrmu_spdhinfo { 341 __u32 spdhcnt; 342 __u32 spdhmcnt; 343 }; 344 345 struct xfrm_usersa_info { 346 struct xfrm_selector sel; 347 struct xfrm_id id; 348 xfrm_address_t saddr; 349 struct xfrm_lifetime_cfg lft; 350 struct xfrm_lifetime_cur curlft; 351 struct xfrm_stats stats; 352 __u32 seq; 353 __u32 reqid; 354 __u16 family; 355 __u8 mode; /* XFRM_MODE_xxx */ 356 __u8 replay_window; 357 __u8 flags; 358 #define XFRM_STATE_NOECN 1 359 #define XFRM_STATE_DECAP_DSCP 2 360 #define XFRM_STATE_NOPMTUDISC 4 361 #define XFRM_STATE_WILDRECV 8 362 #define XFRM_STATE_ICMP 16 363 #define XFRM_STATE_AF_UNSPEC 32 364 #define XFRM_STATE_ALIGN4 64 365 #define XFRM_STATE_ESN 128 366 }; 367 368 struct xfrm_usersa_id { 369 xfrm_address_t daddr; 370 __be32 spi; 371 __u16 family; 372 __u8 proto; 373 }; 374 375 struct xfrm_aevent_id { 376 struct xfrm_usersa_id sa_id; 377 xfrm_address_t saddr; 378 __u32 flags; 379 __u32 reqid; 380 }; 381 382 struct xfrm_userspi_info { 383 struct xfrm_usersa_info info; 384 __u32 min; 385 __u32 max; 386 }; 387 388 struct xfrm_userpolicy_info { 389 struct xfrm_selector sel; 390 struct xfrm_lifetime_cfg lft; 391 struct xfrm_lifetime_cur curlft; 392 __u32 priority; 393 __u32 index; 394 __u8 dir; 395 __u8 action; 396 #define XFRM_POLICY_ALLOW 0 397 #define XFRM_POLICY_BLOCK 1 398 __u8 flags; 399 #define XFRM_POLICY_LOCALOK 1 /* Allow user to override global policy */ 400 /* Automatically expand selector to include matching ICMP payloads. */ 401 #define XFRM_POLICY_ICMP 2 402 __u8 share; 403 }; 404 405 struct xfrm_userpolicy_id { 406 struct xfrm_selector sel; 407 __u32 index; 408 __u8 dir; 409 }; 410 411 struct xfrm_user_acquire { 412 struct xfrm_id id; 413 xfrm_address_t saddr; 414 struct xfrm_selector sel; 415 struct xfrm_userpolicy_info policy; 416 __u32 aalgos; 417 __u32 ealgos; 418 __u32 calgos; 419 __u32 seq; 420 }; 421 422 struct xfrm_user_expire { 423 struct xfrm_usersa_info state; 424 __u8 hard; 425 }; 426 427 struct xfrm_user_polexpire { 428 struct xfrm_userpolicy_info pol; 429 __u8 hard; 430 }; 431 432 struct xfrm_usersa_flush { 433 __u8 proto; 434 }; 435 436 struct xfrm_user_report { 437 __u8 proto; 438 struct xfrm_selector sel; 439 }; 440 441 /* Used by MIGRATE to pass addresses IKE should use to perform 442 * SA negotiation with the peer */ 443 struct xfrm_user_kmaddress { 444 xfrm_address_t local; 445 xfrm_address_t remote; 446 __u32 reserved; 447 __u16 family; 448 }; 449 450 struct xfrm_user_migrate { 451 xfrm_address_t old_daddr; 452 xfrm_address_t old_saddr; 453 xfrm_address_t new_daddr; 454 xfrm_address_t new_saddr; 455 __u8 proto; 456 __u8 mode; 457 __u16 reserved; 458 __u32 reqid; 459 __u16 old_family; 460 __u16 new_family; 461 }; 462 463 struct xfrm_user_mapping { 464 struct xfrm_usersa_id id; 465 __u32 reqid; 466 xfrm_address_t old_saddr; 467 xfrm_address_t new_saddr; 468 __be16 old_sport; 469 __be16 new_sport; 470 }; 471 472 /* backwards compatibility for userspace */ 473 #define XFRMGRP_ACQUIRE 1 474 #define XFRMGRP_EXPIRE 2 475 #define XFRMGRP_SA 4 476 #define XFRMGRP_POLICY 8 477 #define XFRMGRP_REPORT 0x20 478 479 enum xfrm_nlgroups { 480 XFRMNLGRP_NONE, 481 #define XFRMNLGRP_NONE XFRMNLGRP_NONE 482 XFRMNLGRP_ACQUIRE, 483 #define XFRMNLGRP_ACQUIRE XFRMNLGRP_ACQUIRE 484 XFRMNLGRP_EXPIRE, 485 #define XFRMNLGRP_EXPIRE XFRMNLGRP_EXPIRE 486 XFRMNLGRP_SA, 487 #define XFRMNLGRP_SA XFRMNLGRP_SA 488 XFRMNLGRP_POLICY, 489 #define XFRMNLGRP_POLICY XFRMNLGRP_POLICY 490 XFRMNLGRP_AEVENTS, 491 #define XFRMNLGRP_AEVENTS XFRMNLGRP_AEVENTS 492 XFRMNLGRP_REPORT, 493 #define XFRMNLGRP_REPORT XFRMNLGRP_REPORT 494 XFRMNLGRP_MIGRATE, 495 #define XFRMNLGRP_MIGRATE XFRMNLGRP_MIGRATE 496 XFRMNLGRP_MAPPING, 497 #define XFRMNLGRP_MAPPING XFRMNLGRP_MAPPING 498 __XFRMNLGRP_MAX 499 }; 500 #define XFRMNLGRP_MAX (__XFRMNLGRP_MAX - 1) 501 502 #endif /* _LINUX_XFRM_H */ 503
