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 { 15 __be32 a4; 16 __be32 a6[4]; 17 } xfrm_address_t; 18 19 /* Ident of a specific xfrm_state. It is used on input to lookup 20 * the state by (spi,daddr,ah/esp) or to store information about 21 * spi, protocol and tunnel address on output. 22 */ 23 struct xfrm_id 24 { 25 xfrm_address_t daddr; 26 __be32 spi; 27 __u8 proto; 28 }; 29 30 struct xfrm_sec_ctx { 31 __u8 ctx_doi; 32 __u8 ctx_alg; 33 __u16 ctx_len; 34 __u32 ctx_sid; 35 char ctx_str[0]; 36 }; 37 38 /* Security Context Domains of Interpretation */ 39 #define XFRM_SC_DOI_RESERVED 0 40 #define XFRM_SC_DOI_LSM 1 41 42 /* Security Context Algorithms */ 43 #define XFRM_SC_ALG_RESERVED 0 44 #define XFRM_SC_ALG_SELINUX 1 45 46 /* Selector, used as selector both on policy rules (SPD) and SAs. */ 47 48 struct xfrm_selector 49 { 50 xfrm_address_t daddr; 51 xfrm_address_t saddr; 52 __be16 dport; 53 __be16 dport_mask; 54 __be16 sport; 55 __be16 sport_mask; 56 __u16 family; 57 __u8 prefixlen_d; 58 __u8 prefixlen_s; 59 __u8 proto; 60 int ifindex; 61 uid_t user; 62 }; 63 64 #define XFRM_INF (~(__u64)0) 65 66 struct xfrm_lifetime_cfg 67 { 68 __u64 soft_byte_limit; 69 __u64 hard_byte_limit; 70 __u64 soft_packet_limit; 71 __u64 hard_packet_limit; 72 __u64 soft_add_expires_seconds; 73 __u64 hard_add_expires_seconds; 74 __u64 soft_use_expires_seconds; 75 __u64 hard_use_expires_seconds; 76 }; 77 78 struct xfrm_lifetime_cur 79 { 80 __u64 bytes; 81 __u64 packets; 82 __u64 add_time; 83 __u64 use_time; 84 }; 85 86 struct xfrm_replay_state 87 { 88 __u32 oseq; 89 __u32 seq; 90 __u32 bitmap; 91 }; 92 93 struct xfrm_algo { 94 char alg_name[64]; 95 int alg_key_len; /* in bits */ 96 char alg_key[0]; 97 }; 98 99 struct xfrm_stats { 100 __u32 replay_window; 101 __u32 replay; 102 __u32 integrity_failed; 103 }; 104 105 enum 106 { 107 XFRM_POLICY_TYPE_MAIN = 0, 108 XFRM_POLICY_TYPE_SUB = 1, 109 XFRM_POLICY_TYPE_MAX = 2 110 }; 111 112 enum 113 { 114 XFRM_POLICY_IN = 0, 115 XFRM_POLICY_OUT = 1, 116 XFRM_POLICY_FWD = 2, 117 XFRM_POLICY_MAX = 3 118 }; 119 120 enum 121 { 122 XFRM_SHARE_ANY, /* No limitations */ 123 XFRM_SHARE_SESSION, /* For this session only */ 124 XFRM_SHARE_USER, /* For this user only */ 125 XFRM_SHARE_UNIQUE /* Use once */ 126 }; 127 128 #define XFRM_MODE_TRANSPORT 0 129 #define XFRM_MODE_TUNNEL 1 130 #define XFRM_MODE_ROUTEOPTIMIZATION 2 131 #define XFRM_MODE_IN_TRIGGER 3 132 #define XFRM_MODE_BEET 4 133 #define XFRM_MODE_MAX 5 134 135 /* Netlink configuration messages. */ 136 enum { 137 XFRM_MSG_BASE = 0x10, 138 139 XFRM_MSG_NEWSA = 0x10, 140 #define XFRM_MSG_NEWSA XFRM_MSG_NEWSA 141 XFRM_MSG_DELSA, 142 #define XFRM_MSG_DELSA XFRM_MSG_DELSA 143 XFRM_MSG_GETSA, 144 #define XFRM_MSG_GETSA XFRM_MSG_GETSA 145 146 XFRM_MSG_NEWPOLICY, 147 #define XFRM_MSG_NEWPOLICY XFRM_MSG_NEWPOLICY 148 XFRM_MSG_DELPOLICY, 149 #define XFRM_MSG_DELPOLICY XFRM_MSG_DELPOLICY 150 XFRM_MSG_GETPOLICY, 151 #define XFRM_MSG_GETPOLICY XFRM_MSG_GETPOLICY 152 153 XFRM_MSG_ALLOCSPI, 154 #define XFRM_MSG_ALLOCSPI XFRM_MSG_ALLOCSPI 155 XFRM_MSG_ACQUIRE, 156 #define XFRM_MSG_ACQUIRE XFRM_MSG_ACQUIRE 157 XFRM_MSG_EXPIRE, 158 #define XFRM_MSG_EXPIRE XFRM_MSG_EXPIRE 159 160 XFRM_MSG_UPDPOLICY, 161 #define XFRM_MSG_UPDPOLICY XFRM_MSG_UPDPOLICY 162 XFRM_MSG_UPDSA, 163 #define XFRM_MSG_UPDSA XFRM_MSG_UPDSA 164 165 XFRM_MSG_POLEXPIRE, 166 #define XFRM_MSG_POLEXPIRE XFRM_MSG_POLEXPIRE 167 168 XFRM_MSG_FLUSHSA, 169 #define XFRM_MSG_FLUSHSA XFRM_MSG_FLUSHSA 170 XFRM_MSG_FLUSHPOLICY, 171 #define XFRM_MSG_FLUSHPOLICY XFRM_MSG_FLUSHPOLICY 172 173 XFRM_MSG_NEWAE, 174 #define XFRM_MSG_NEWAE XFRM_MSG_NEWAE 175 XFRM_MSG_GETAE, 176 #define XFRM_MSG_GETAE XFRM_MSG_GETAE 177 178 XFRM_MSG_REPORT, 179 #define XFRM_MSG_REPORT XFRM_MSG_REPORT 180 181 XFRM_MSG_MIGRATE, 182 #define XFRM_MSG_MIGRATE XFRM_MSG_MIGRATE 183 184 XFRM_MSG_NEWSADINFO, 185 #define XFRM_MSG_NEWSADINFO XFRM_MSG_NEWSADINFO 186 XFRM_MSG_GETSADINFO, 187 #define XFRM_MSG_GETSADINFO XFRM_MSG_GETSADINFO 188 189 XFRM_MSG_NEWSPDINFO, 190 #define XFRM_MSG_NEWSPDINFO XFRM_MSG_NEWSPDINFO 191 XFRM_MSG_GETSPDINFO, 192 #define XFRM_MSG_GETSPDINFO XFRM_MSG_GETSPDINFO 193 __XFRM_MSG_MAX 194 }; 195 #define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1) 196 197 #define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE) 198 199 /* 200 * Generic LSM security context for comunicating to user space 201 * NOTE: Same format as sadb_x_sec_ctx 202 */ 203 struct xfrm_user_sec_ctx { 204 __u16 len; 205 __u16 exttype; 206 __u8 ctx_alg; /* LSMs: e.g., selinux == 1 */ 207 __u8 ctx_doi; 208 __u16 ctx_len; 209 }; 210 211 struct xfrm_user_tmpl { 212 struct xfrm_id id; 213 __u16 family; 214 xfrm_address_t saddr; 215 __u32 reqid; 216 __u8 mode; 217 __u8 share; 218 __u8 optional; 219 __u32 aalgos; 220 __u32 ealgos; 221 __u32 calgos; 222 }; 223 224 struct xfrm_encap_tmpl { 225 __u16 encap_type; 226 __be16 encap_sport; 227 __be16 encap_dport; 228 xfrm_address_t encap_oa; 229 }; 230 231 /* AEVENT flags */ 232 enum xfrm_ae_ftype_t { 233 XFRM_AE_UNSPEC, 234 XFRM_AE_RTHR=1, /* replay threshold*/ 235 XFRM_AE_RVAL=2, /* replay value */ 236 XFRM_AE_LVAL=4, /* lifetime value */ 237 XFRM_AE_ETHR=8, /* expiry timer threshold */ 238 XFRM_AE_CR=16, /* Event cause is replay update */ 239 XFRM_AE_CE=32, /* Event cause is timer expiry */ 240 XFRM_AE_CU=64, /* Event cause is policy update */ 241 __XFRM_AE_MAX 242 243 #define XFRM_AE_MAX (__XFRM_AE_MAX - 1) 244 }; 245 246 struct xfrm_userpolicy_type { 247 __u8 type; 248 __u16 reserved1; 249 __u8 reserved2; 250 }; 251 252 /* Netlink message attributes. */ 253 enum xfrm_attr_type_t { 254 XFRMA_UNSPEC, 255 XFRMA_ALG_AUTH, /* struct xfrm_algo */ 256 XFRMA_ALG_CRYPT, /* struct xfrm_algo */ 257 XFRMA_ALG_COMP, /* struct xfrm_algo */ 258 XFRMA_ENCAP, /* struct xfrm_algo + struct xfrm_encap_tmpl */ 259 XFRMA_TMPL, /* 1 or more struct xfrm_user_tmpl */ 260 XFRMA_SA, 261 XFRMA_POLICY, 262 XFRMA_SEC_CTX, /* struct xfrm_sec_ctx */ 263 XFRMA_LTIME_VAL, 264 XFRMA_REPLAY_VAL, 265 XFRMA_REPLAY_THRESH, 266 XFRMA_ETIMER_THRESH, 267 XFRMA_SRCADDR, /* xfrm_address_t */ 268 XFRMA_COADDR, /* xfrm_address_t */ 269 XFRMA_LASTUSED, 270 XFRMA_POLICY_TYPE, /* struct xfrm_userpolicy_type */ 271 XFRMA_MIGRATE, 272 __XFRMA_MAX 273 274 #define XFRMA_MAX (__XFRMA_MAX - 1) 275 }; 276 277 enum xfrm_sadattr_type_t { 278 XFRMA_SAD_UNSPEC, 279 XFRMA_SAD_CNT, 280 XFRMA_SAD_HINFO, 281 __XFRMA_SAD_MAX 282 283 #define XFRMA_SAD_MAX (__XFRMA_SAD_MAX - 1) 284 }; 285 286 struct xfrmu_sadhinfo { 287 __u32 sadhcnt; /* current hash bkts */ 288 __u32 sadhmcnt; /* max allowed hash bkts */ 289 }; 290 291 enum xfrm_spdattr_type_t { 292 XFRMA_SPD_UNSPEC, 293 XFRMA_SPD_INFO, 294 XFRMA_SPD_HINFO, 295 __XFRMA_SPD_MAX 296 297 #define XFRMA_SPD_MAX (__XFRMA_SPD_MAX - 1) 298 }; 299 300 struct xfrmu_spdinfo { 301 __u32 incnt; 302 __u32 outcnt; 303 __u32 fwdcnt; 304 __u32 inscnt; 305 __u32 outscnt; 306 __u32 fwdscnt; 307 }; 308 309 struct xfrmu_spdhinfo { 310 __u32 spdhcnt; 311 __u32 spdhmcnt; 312 }; 313 314 struct xfrm_usersa_info { 315 struct xfrm_selector sel; 316 struct xfrm_id id; 317 xfrm_address_t saddr; 318 struct xfrm_lifetime_cfg lft; 319 struct xfrm_lifetime_cur curlft; 320 struct xfrm_stats stats; 321 __u32 seq; 322 __u32 reqid; 323 __u16 family; 324 __u8 mode; /* XFRM_MODE_xxx */ 325 __u8 replay_window; 326 __u8 flags; 327 #define XFRM_STATE_NOECN 1 328 #define XFRM_STATE_DECAP_DSCP 2 329 #define XFRM_STATE_NOPMTUDISC 4 330 #define XFRM_STATE_WILDRECV 8 331 }; 332 333 struct xfrm_usersa_id { 334 xfrm_address_t daddr; 335 __be32 spi; 336 __u16 family; 337 __u8 proto; 338 }; 339 340 struct xfrm_aevent_id { 341 struct xfrm_usersa_id sa_id; 342 xfrm_address_t saddr; 343 __u32 flags; 344 __u32 reqid; 345 }; 346 347 struct xfrm_userspi_info { 348 struct xfrm_usersa_info info; 349 __u32 min; 350 __u32 max; 351 }; 352 353 struct xfrm_userpolicy_info { 354 struct xfrm_selector sel; 355 struct xfrm_lifetime_cfg lft; 356 struct xfrm_lifetime_cur curlft; 357 __u32 priority; 358 __u32 index; 359 __u8 dir; 360 __u8 action; 361 #define XFRM_POLICY_ALLOW 0 362 #define XFRM_POLICY_BLOCK 1 363 __u8 flags; 364 #define XFRM_POLICY_LOCALOK 1 /* Allow user to override global policy */ 365 __u8 share; 366 }; 367 368 struct xfrm_userpolicy_id { 369 struct xfrm_selector sel; 370 __u32 index; 371 __u8 dir; 372 }; 373 374 struct xfrm_user_acquire { 375 struct xfrm_id id; 376 xfrm_address_t saddr; 377 struct xfrm_selector sel; 378 struct xfrm_userpolicy_info policy; 379 __u32 aalgos; 380 __u32 ealgos; 381 __u32 calgos; 382 __u32 seq; 383 }; 384 385 struct xfrm_user_expire { 386 struct xfrm_usersa_info state; 387 __u8 hard; 388 }; 389 390 struct xfrm_user_polexpire { 391 struct xfrm_userpolicy_info pol; 392 __u8 hard; 393 }; 394 395 struct xfrm_usersa_flush { 396 __u8 proto; 397 }; 398 399 struct xfrm_user_report { 400 __u8 proto; 401 struct xfrm_selector sel; 402 }; 403 404 struct xfrm_user_migrate { 405 xfrm_address_t old_daddr; 406 xfrm_address_t old_saddr; 407 xfrm_address_t new_daddr; 408 xfrm_address_t new_saddr; 409 __u8 proto; 410 __u8 mode; 411 __u16 reserved; 412 __u32 reqid; 413 __u16 old_family; 414 __u16 new_family; 415 }; 416 417 /* backwards compatibility for userspace */ 418 #define XFRMGRP_ACQUIRE 1 419 #define XFRMGRP_EXPIRE 2 420 #define XFRMGRP_SA 4 421 #define XFRMGRP_POLICY 8 422 #define XFRMGRP_REPORT 0x20 423 424 enum xfrm_nlgroups { 425 XFRMNLGRP_NONE, 426 #define XFRMNLGRP_NONE XFRMNLGRP_NONE 427 XFRMNLGRP_ACQUIRE, 428 #define XFRMNLGRP_ACQUIRE XFRMNLGRP_ACQUIRE 429 XFRMNLGRP_EXPIRE, 430 #define XFRMNLGRP_EXPIRE XFRMNLGRP_EXPIRE 431 XFRMNLGRP_SA, 432 #define XFRMNLGRP_SA XFRMNLGRP_SA 433 XFRMNLGRP_POLICY, 434 #define XFRMNLGRP_POLICY XFRMNLGRP_POLICY 435 XFRMNLGRP_AEVENTS, 436 #define XFRMNLGRP_AEVENTS XFRMNLGRP_AEVENTS 437 XFRMNLGRP_REPORT, 438 #define XFRMNLGRP_REPORT XFRMNLGRP_REPORT 439 XFRMNLGRP_MIGRATE, 440 #define XFRMNLGRP_MIGRATE XFRMNLGRP_MIGRATE 441 __XFRMNLGRP_MAX 442 }; 443 #define XFRMNLGRP_MAX (__XFRMNLGRP_MAX - 1) 444 445 #endif /* _LINUX_XFRM_H */ 446
