Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | __u32 a4; |
| 16 | __u32 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 | __u32 spi; |
| 27 | __u8 proto; |
| 28 | }; |
| 29 | |
Trent Jaeger | df71837 | 2005-12-13 23:12:27 -0800 | [diff] [blame] | 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | __u16 dport; |
| 53 | __u16 dport_mask; |
| 54 | __u16 sport; |
| 55 | __u16 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_IN = 0, |
| 108 | XFRM_POLICY_OUT = 1, |
| 109 | XFRM_POLICY_FWD = 2, |
| 110 | XFRM_POLICY_MAX = 3 |
| 111 | }; |
| 112 | |
| 113 | enum |
| 114 | { |
| 115 | XFRM_SHARE_ANY, /* No limitations */ |
| 116 | XFRM_SHARE_SESSION, /* For this session only */ |
| 117 | XFRM_SHARE_USER, /* For this user only */ |
| 118 | XFRM_SHARE_UNIQUE /* Use once */ |
| 119 | }; |
| 120 | |
| 121 | /* Netlink configuration messages. */ |
| 122 | enum { |
| 123 | XFRM_MSG_BASE = 0x10, |
| 124 | |
| 125 | XFRM_MSG_NEWSA = 0x10, |
| 126 | #define XFRM_MSG_NEWSA XFRM_MSG_NEWSA |
| 127 | XFRM_MSG_DELSA, |
| 128 | #define XFRM_MSG_DELSA XFRM_MSG_DELSA |
| 129 | XFRM_MSG_GETSA, |
| 130 | #define XFRM_MSG_GETSA XFRM_MSG_GETSA |
| 131 | |
| 132 | XFRM_MSG_NEWPOLICY, |
| 133 | #define XFRM_MSG_NEWPOLICY XFRM_MSG_NEWPOLICY |
| 134 | XFRM_MSG_DELPOLICY, |
| 135 | #define XFRM_MSG_DELPOLICY XFRM_MSG_DELPOLICY |
| 136 | XFRM_MSG_GETPOLICY, |
| 137 | #define XFRM_MSG_GETPOLICY XFRM_MSG_GETPOLICY |
| 138 | |
| 139 | XFRM_MSG_ALLOCSPI, |
| 140 | #define XFRM_MSG_ALLOCSPI XFRM_MSG_ALLOCSPI |
| 141 | XFRM_MSG_ACQUIRE, |
| 142 | #define XFRM_MSG_ACQUIRE XFRM_MSG_ACQUIRE |
| 143 | XFRM_MSG_EXPIRE, |
| 144 | #define XFRM_MSG_EXPIRE XFRM_MSG_EXPIRE |
| 145 | |
| 146 | XFRM_MSG_UPDPOLICY, |
| 147 | #define XFRM_MSG_UPDPOLICY XFRM_MSG_UPDPOLICY |
| 148 | XFRM_MSG_UPDSA, |
| 149 | #define XFRM_MSG_UPDSA XFRM_MSG_UPDSA |
| 150 | |
| 151 | XFRM_MSG_POLEXPIRE, |
| 152 | #define XFRM_MSG_POLEXPIRE XFRM_MSG_POLEXPIRE |
| 153 | |
| 154 | XFRM_MSG_FLUSHSA, |
| 155 | #define XFRM_MSG_FLUSHSA XFRM_MSG_FLUSHSA |
| 156 | XFRM_MSG_FLUSHPOLICY, |
| 157 | #define XFRM_MSG_FLUSHPOLICY XFRM_MSG_FLUSHPOLICY |
| 158 | |
Thomas Graf | 526bdb8 | 2005-05-03 14:26:01 -0700 | [diff] [blame] | 159 | __XFRM_MSG_MAX |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | }; |
Thomas Graf | 526bdb8 | 2005-05-03 14:26:01 -0700 | [diff] [blame] | 161 | #define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | |
Thomas Graf | 492b558 | 2005-05-03 14:26:40 -0700 | [diff] [blame] | 163 | #define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE) |
| 164 | |
Trent Jaeger | df71837 | 2005-12-13 23:12:27 -0800 | [diff] [blame] | 165 | /* |
| 166 | * Generic LSM security context for comunicating to user space |
| 167 | * NOTE: Same format as sadb_x_sec_ctx |
| 168 | */ |
| 169 | struct xfrm_user_sec_ctx { |
| 170 | __u16 len; |
| 171 | __u16 exttype; |
| 172 | __u8 ctx_alg; /* LSMs: e.g., selinux == 1 */ |
| 173 | __u8 ctx_doi; |
| 174 | __u16 ctx_len; |
| 175 | }; |
| 176 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | struct xfrm_user_tmpl { |
| 178 | struct xfrm_id id; |
| 179 | __u16 family; |
| 180 | xfrm_address_t saddr; |
| 181 | __u32 reqid; |
| 182 | __u8 mode; |
| 183 | __u8 share; |
| 184 | __u8 optional; |
| 185 | __u32 aalgos; |
| 186 | __u32 ealgos; |
| 187 | __u32 calgos; |
| 188 | }; |
| 189 | |
| 190 | struct xfrm_encap_tmpl { |
| 191 | __u16 encap_type; |
| 192 | __u16 encap_sport; |
| 193 | __u16 encap_dport; |
| 194 | xfrm_address_t encap_oa; |
| 195 | }; |
| 196 | |
| 197 | /* Netlink message attributes. */ |
| 198 | enum xfrm_attr_type_t { |
| 199 | XFRMA_UNSPEC, |
| 200 | XFRMA_ALG_AUTH, /* struct xfrm_algo */ |
| 201 | XFRMA_ALG_CRYPT, /* struct xfrm_algo */ |
| 202 | XFRMA_ALG_COMP, /* struct xfrm_algo */ |
| 203 | XFRMA_ENCAP, /* struct xfrm_algo + struct xfrm_encap_tmpl */ |
| 204 | XFRMA_TMPL, /* 1 or more struct xfrm_user_tmpl */ |
Herbert Xu | 0603eac | 2005-06-18 22:54:36 -0700 | [diff] [blame] | 205 | XFRMA_SA, |
| 206 | XFRMA_POLICY, |
Trent Jaeger | df71837 | 2005-12-13 23:12:27 -0800 | [diff] [blame] | 207 | XFRMA_SEC_CTX, /* struct xfrm_sec_ctx */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | __XFRMA_MAX |
| 209 | |
| 210 | #define XFRMA_MAX (__XFRMA_MAX - 1) |
| 211 | }; |
| 212 | |
| 213 | struct xfrm_usersa_info { |
| 214 | struct xfrm_selector sel; |
| 215 | struct xfrm_id id; |
| 216 | xfrm_address_t saddr; |
| 217 | struct xfrm_lifetime_cfg lft; |
| 218 | struct xfrm_lifetime_cur curlft; |
| 219 | struct xfrm_stats stats; |
| 220 | __u32 seq; |
| 221 | __u32 reqid; |
| 222 | __u16 family; |
| 223 | __u8 mode; /* 0=transport,1=tunnel */ |
| 224 | __u8 replay_window; |
| 225 | __u8 flags; |
| 226 | #define XFRM_STATE_NOECN 1 |
| 227 | #define XFRM_STATE_DECAP_DSCP 2 |
Herbert Xu | dd87147 | 2005-06-20 13:21:43 -0700 | [diff] [blame] | 228 | #define XFRM_STATE_NOPMTUDISC 4 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | }; |
| 230 | |
| 231 | struct xfrm_usersa_id { |
| 232 | xfrm_address_t daddr; |
| 233 | __u32 spi; |
| 234 | __u16 family; |
| 235 | __u8 proto; |
| 236 | }; |
| 237 | |
| 238 | struct xfrm_userspi_info { |
| 239 | struct xfrm_usersa_info info; |
| 240 | __u32 min; |
| 241 | __u32 max; |
| 242 | }; |
| 243 | |
| 244 | struct xfrm_userpolicy_info { |
| 245 | struct xfrm_selector sel; |
| 246 | struct xfrm_lifetime_cfg lft; |
| 247 | struct xfrm_lifetime_cur curlft; |
| 248 | __u32 priority; |
| 249 | __u32 index; |
| 250 | __u8 dir; |
| 251 | __u8 action; |
| 252 | #define XFRM_POLICY_ALLOW 0 |
| 253 | #define XFRM_POLICY_BLOCK 1 |
| 254 | __u8 flags; |
| 255 | #define XFRM_POLICY_LOCALOK 1 /* Allow user to override global policy */ |
| 256 | __u8 share; |
| 257 | }; |
| 258 | |
| 259 | struct xfrm_userpolicy_id { |
| 260 | struct xfrm_selector sel; |
| 261 | __u32 index; |
| 262 | __u8 dir; |
| 263 | }; |
| 264 | |
| 265 | struct xfrm_user_acquire { |
| 266 | struct xfrm_id id; |
| 267 | xfrm_address_t saddr; |
| 268 | struct xfrm_selector sel; |
| 269 | struct xfrm_userpolicy_info policy; |
| 270 | __u32 aalgos; |
| 271 | __u32 ealgos; |
| 272 | __u32 calgos; |
| 273 | __u32 seq; |
| 274 | }; |
| 275 | |
| 276 | struct xfrm_user_expire { |
| 277 | struct xfrm_usersa_info state; |
| 278 | __u8 hard; |
| 279 | }; |
| 280 | |
| 281 | struct xfrm_user_polexpire { |
| 282 | struct xfrm_userpolicy_info pol; |
| 283 | __u8 hard; |
| 284 | }; |
| 285 | |
| 286 | struct xfrm_usersa_flush { |
| 287 | __u8 proto; |
| 288 | }; |
| 289 | |
Patrick McHardy | ac6d439 | 2005-08-14 19:29:52 -0700 | [diff] [blame] | 290 | #ifndef __KERNEL__ |
| 291 | /* backwards compatibility for userspace */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | #define XFRMGRP_ACQUIRE 1 |
| 293 | #define XFRMGRP_EXPIRE 2 |
Jamal Hadi Salim | 26b15da | 2005-06-18 22:42:13 -0700 | [diff] [blame] | 294 | #define XFRMGRP_SA 4 |
| 295 | #define XFRMGRP_POLICY 8 |
Patrick McHardy | ac6d439 | 2005-08-14 19:29:52 -0700 | [diff] [blame] | 296 | #endif |
| 297 | |
| 298 | enum xfrm_nlgroups { |
| 299 | XFRMNLGRP_NONE, |
| 300 | #define XFRMNLGRP_NONE XFRMNLGRP_NONE |
| 301 | XFRMNLGRP_ACQUIRE, |
| 302 | #define XFRMNLGRP_ACQUIRE XFRMNLGRP_ACQUIRE |
| 303 | XFRMNLGRP_EXPIRE, |
| 304 | #define XFRMNLGRP_EXPIRE XFRMNLGRP_EXPIRE |
| 305 | XFRMNLGRP_SA, |
| 306 | #define XFRMNLGRP_SA XFRMNLGRP_SA |
| 307 | XFRMNLGRP_POLICY, |
| 308 | #define XFRMNLGRP_POLICY XFRMNLGRP_POLICY |
| 309 | __XFRMNLGRP_MAX |
| 310 | }; |
| 311 | #define XFRMNLGRP_MAX (__XFRMNLGRP_MAX - 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | |
| 313 | #endif /* _LINUX_XFRM_H */ |