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1da177e4 LT |
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 | */ | |
d94d9fee | 13 | typedef union { |
737b5761 AV |
14 | __be32 a4; |
15 | __be32 a6[4]; | |
1da177e4 LT |
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 | */ | |
d94d9fee | 22 | struct xfrm_id { |
1da177e4 | 23 | xfrm_address_t daddr; |
e037c39b | 24 | __be32 spi; |
1da177e4 LT |
25 | __u8 proto; |
26 | }; | |
27 | ||
df71837d TJ |
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 | ||
1da177e4 LT |
44 | /* Selector, used as selector both on policy rules (SPD) and SAs. */ |
45 | ||
d94d9fee | 46 | struct xfrm_selector { |
1da177e4 LT |
47 | xfrm_address_t daddr; |
48 | xfrm_address_t saddr; | |
8f83f23e AV |
49 | __be16 dport; |
50 | __be16 dport_mask; | |
51 | __be16 sport; | |
52 | __be16 sport_mask; | |
1da177e4 LT |
53 | __u16 family; |
54 | __u8 prefixlen_d; | |
55 | __u8 prefixlen_s; | |
56 | __u8 proto; | |
57 | int ifindex; | |
85efde6f | 58 | __kernel_uid32_t user; |
1da177e4 LT |
59 | }; |
60 | ||
61 | #define XFRM_INF (~(__u64)0) | |
62 | ||
d94d9fee | 63 | struct xfrm_lifetime_cfg { |
1da177e4 LT |
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 | ||
d94d9fee | 74 | struct xfrm_lifetime_cur { |
1da177e4 LT |
75 | __u64 bytes; |
76 | __u64 packets; | |
77 | __u64 add_time; | |
78 | __u64 use_time; | |
79 | }; | |
80 | ||
d94d9fee | 81 | struct xfrm_replay_state { |
1da177e4 LT |
82 | __u32 oseq; |
83 | __u32 seq; | |
84 | __u32 bitmap; | |
85 | }; | |
86 | ||
87 | struct xfrm_algo { | |
3f4afb64 | 88 | char alg_name[64]; |
ba749ae9 | 89 | unsigned int alg_key_len; /* in bits */ |
3f4afb64 | 90 | char alg_key[0]; |
1da177e4 LT |
91 | }; |
92 | ||
4e242d16 MW |
93 | struct xfrm_algo_auth { |
94 | char alg_name[64]; | |
95 | unsigned int alg_key_len; /* in bits */ | |
96 | unsigned int alg_trunc_len; /* in bits */ | |
97 | char alg_key[0]; | |
98 | }; | |
99 | ||
1a6509d9 | 100 | struct xfrm_algo_aead { |
461e6c85 ED |
101 | char alg_name[64]; |
102 | unsigned int alg_key_len; /* in bits */ | |
103 | unsigned int alg_icv_len; /* in bits */ | |
104 | char alg_key[0]; | |
1a6509d9 HX |
105 | }; |
106 | ||
1da177e4 LT |
107 | struct xfrm_stats { |
108 | __u32 replay_window; | |
109 | __u32 replay; | |
110 | __u32 integrity_failed; | |
111 | }; | |
112 | ||
d94d9fee | 113 | enum { |
4e81bb83 MN |
114 | XFRM_POLICY_TYPE_MAIN = 0, |
115 | XFRM_POLICY_TYPE_SUB = 1, | |
4c563f76 TT |
116 | XFRM_POLICY_TYPE_MAX = 2, |
117 | XFRM_POLICY_TYPE_ANY = 255 | |
4e81bb83 MN |
118 | }; |
119 | ||
d94d9fee | 120 | enum { |
1da177e4 LT |
121 | XFRM_POLICY_IN = 0, |
122 | XFRM_POLICY_OUT = 1, | |
123 | XFRM_POLICY_FWD = 2, | |
d5422efe | 124 | XFRM_POLICY_MASK = 3, |
1da177e4 LT |
125 | XFRM_POLICY_MAX = 3 |
126 | }; | |
127 | ||
d94d9fee | 128 | enum { |
1da177e4 LT |
129 | XFRM_SHARE_ANY, /* No limitations */ |
130 | XFRM_SHARE_SESSION, /* For this session only */ | |
131 | XFRM_SHARE_USER, /* For this user only */ | |
132 | XFRM_SHARE_UNIQUE /* Use once */ | |
133 | }; | |
134 | ||
b59f45d0 HX |
135 | #define XFRM_MODE_TRANSPORT 0 |
136 | #define XFRM_MODE_TUNNEL 1 | |
7e49e6de MN |
137 | #define XFRM_MODE_ROUTEOPTIMIZATION 2 |
138 | #define XFRM_MODE_IN_TRIGGER 3 | |
0a69452c DB |
139 | #define XFRM_MODE_BEET 4 |
140 | #define XFRM_MODE_MAX 5 | |
b59f45d0 | 141 | |
1da177e4 LT |
142 | /* Netlink configuration messages. */ |
143 | enum { | |
144 | XFRM_MSG_BASE = 0x10, | |
145 | ||
146 | XFRM_MSG_NEWSA = 0x10, | |
147 | #define XFRM_MSG_NEWSA XFRM_MSG_NEWSA | |
148 | XFRM_MSG_DELSA, | |
149 | #define XFRM_MSG_DELSA XFRM_MSG_DELSA | |
150 | XFRM_MSG_GETSA, | |
151 | #define XFRM_MSG_GETSA XFRM_MSG_GETSA | |
152 | ||
153 | XFRM_MSG_NEWPOLICY, | |
154 | #define XFRM_MSG_NEWPOLICY XFRM_MSG_NEWPOLICY | |
155 | XFRM_MSG_DELPOLICY, | |
156 | #define XFRM_MSG_DELPOLICY XFRM_MSG_DELPOLICY | |
157 | XFRM_MSG_GETPOLICY, | |
158 | #define XFRM_MSG_GETPOLICY XFRM_MSG_GETPOLICY | |
159 | ||
160 | XFRM_MSG_ALLOCSPI, | |
161 | #define XFRM_MSG_ALLOCSPI XFRM_MSG_ALLOCSPI | |
162 | XFRM_MSG_ACQUIRE, | |
163 | #define XFRM_MSG_ACQUIRE XFRM_MSG_ACQUIRE | |
164 | XFRM_MSG_EXPIRE, | |
165 | #define XFRM_MSG_EXPIRE XFRM_MSG_EXPIRE | |
166 | ||
167 | XFRM_MSG_UPDPOLICY, | |
168 | #define XFRM_MSG_UPDPOLICY XFRM_MSG_UPDPOLICY | |
169 | XFRM_MSG_UPDSA, | |
170 | #define XFRM_MSG_UPDSA XFRM_MSG_UPDSA | |
171 | ||
172 | XFRM_MSG_POLEXPIRE, | |
173 | #define XFRM_MSG_POLEXPIRE XFRM_MSG_POLEXPIRE | |
174 | ||
175 | XFRM_MSG_FLUSHSA, | |
176 | #define XFRM_MSG_FLUSHSA XFRM_MSG_FLUSHSA | |
177 | XFRM_MSG_FLUSHPOLICY, | |
178 | #define XFRM_MSG_FLUSHPOLICY XFRM_MSG_FLUSHPOLICY | |
179 | ||
f8cd5488 JHS |
180 | XFRM_MSG_NEWAE, |
181 | #define XFRM_MSG_NEWAE XFRM_MSG_NEWAE | |
182 | XFRM_MSG_GETAE, | |
183 | #define XFRM_MSG_GETAE XFRM_MSG_GETAE | |
97a64b45 MN |
184 | |
185 | XFRM_MSG_REPORT, | |
186 | #define XFRM_MSG_REPORT XFRM_MSG_REPORT | |
187 | ||
80c9abaa SS |
188 | XFRM_MSG_MIGRATE, |
189 | #define XFRM_MSG_MIGRATE XFRM_MSG_MIGRATE | |
190 | ||
28d8909b JHS |
191 | XFRM_MSG_NEWSADINFO, |
192 | #define XFRM_MSG_NEWSADINFO XFRM_MSG_NEWSADINFO | |
193 | XFRM_MSG_GETSADINFO, | |
194 | #define XFRM_MSG_GETSADINFO XFRM_MSG_GETSADINFO | |
ecfd6b18 JHS |
195 | |
196 | XFRM_MSG_NEWSPDINFO, | |
197 | #define XFRM_MSG_NEWSPDINFO XFRM_MSG_NEWSPDINFO | |
198 | XFRM_MSG_GETSPDINFO, | |
199 | #define XFRM_MSG_GETSPDINFO XFRM_MSG_GETSPDINFO | |
3a2dfbe8 MW |
200 | |
201 | XFRM_MSG_MAPPING, | |
202 | #define XFRM_MSG_MAPPING XFRM_MSG_MAPPING | |
526bdb80 | 203 | __XFRM_MSG_MAX |
1da177e4 | 204 | }; |
526bdb80 | 205 | #define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1) |
1da177e4 | 206 | |
492b558b TG |
207 | #define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE) |
208 | ||
df71837d TJ |
209 | /* |
210 | * Generic LSM security context for comunicating to user space | |
211 | * NOTE: Same format as sadb_x_sec_ctx | |
212 | */ | |
213 | struct xfrm_user_sec_ctx { | |
214 | __u16 len; | |
215 | __u16 exttype; | |
216 | __u8 ctx_alg; /* LSMs: e.g., selinux == 1 */ | |
217 | __u8 ctx_doi; | |
218 | __u16 ctx_len; | |
219 | }; | |
220 | ||
1da177e4 LT |
221 | struct xfrm_user_tmpl { |
222 | struct xfrm_id id; | |
223 | __u16 family; | |
224 | xfrm_address_t saddr; | |
225 | __u32 reqid; | |
226 | __u8 mode; | |
227 | __u8 share; | |
228 | __u8 optional; | |
229 | __u32 aalgos; | |
230 | __u32 ealgos; | |
231 | __u32 calgos; | |
232 | }; | |
233 | ||
234 | struct xfrm_encap_tmpl { | |
235 | __u16 encap_type; | |
d5a0a1e3 AV |
236 | __be16 encap_sport; |
237 | __be16 encap_dport; | |
1da177e4 LT |
238 | xfrm_address_t encap_oa; |
239 | }; | |
240 | ||
f8cd5488 JHS |
241 | /* AEVENT flags */ |
242 | enum xfrm_ae_ftype_t { | |
243 | XFRM_AE_UNSPEC, | |
244 | XFRM_AE_RTHR=1, /* replay threshold*/ | |
245 | XFRM_AE_RVAL=2, /* replay value */ | |
246 | XFRM_AE_LVAL=4, /* lifetime value */ | |
247 | XFRM_AE_ETHR=8, /* expiry timer threshold */ | |
248 | XFRM_AE_CR=16, /* Event cause is replay update */ | |
249 | XFRM_AE_CE=32, /* Event cause is timer expiry */ | |
250 | XFRM_AE_CU=64, /* Event cause is policy update */ | |
251 | __XFRM_AE_MAX | |
252 | ||
253 | #define XFRM_AE_MAX (__XFRM_AE_MAX - 1) | |
254 | }; | |
255 | ||
f7b6983f MN |
256 | struct xfrm_userpolicy_type { |
257 | __u8 type; | |
258 | __u16 reserved1; | |
259 | __u8 reserved2; | |
260 | }; | |
261 | ||
1da177e4 LT |
262 | /* Netlink message attributes. */ |
263 | enum xfrm_attr_type_t { | |
264 | XFRMA_UNSPEC, | |
265 | XFRMA_ALG_AUTH, /* struct xfrm_algo */ | |
266 | XFRMA_ALG_CRYPT, /* struct xfrm_algo */ | |
267 | XFRMA_ALG_COMP, /* struct xfrm_algo */ | |
268 | XFRMA_ENCAP, /* struct xfrm_algo + struct xfrm_encap_tmpl */ | |
269 | XFRMA_TMPL, /* 1 or more struct xfrm_user_tmpl */ | |
bf825f81 JHS |
270 | XFRMA_SA, /* struct xfrm_usersa_info */ |
271 | XFRMA_POLICY, /*struct xfrm_userpolicy_info */ | |
df71837d | 272 | XFRMA_SEC_CTX, /* struct xfrm_sec_ctx */ |
f8cd5488 JHS |
273 | XFRMA_LTIME_VAL, |
274 | XFRMA_REPLAY_VAL, | |
275 | XFRMA_REPLAY_THRESH, | |
276 | XFRMA_ETIMER_THRESH, | |
eb2971b6 | 277 | XFRMA_SRCADDR, /* xfrm_address_t */ |
060f02a3 | 278 | XFRMA_COADDR, /* xfrm_address_t */ |
bf825f81 | 279 | XFRMA_LASTUSED, /* unsigned long */ |
f7b6983f | 280 | XFRMA_POLICY_TYPE, /* struct xfrm_userpolicy_type */ |
80c9abaa | 281 | XFRMA_MIGRATE, |
1a6509d9 | 282 | XFRMA_ALG_AEAD, /* struct xfrm_algo_aead */ |
13c1d189 | 283 | XFRMA_KMADDRESS, /* struct xfrm_user_kmaddress */ |
4e242d16 | 284 | XFRMA_ALG_AUTH_TRUNC, /* struct xfrm_algo_auth */ |
bf825f81 | 285 | XFRMA_MARK, /* struct xfrm_mark */ |
35d2856b | 286 | XFRMA_TFCPAD, /* __u32 */ |
1da177e4 LT |
287 | __XFRMA_MAX |
288 | ||
289 | #define XFRMA_MAX (__XFRMA_MAX - 1) | |
290 | }; | |
291 | ||
bf825f81 JHS |
292 | struct xfrm_mark { |
293 | __u32 v; /* value */ | |
294 | __u32 m; /* mask */ | |
295 | }; | |
296 | ||
28d8909b JHS |
297 | enum xfrm_sadattr_type_t { |
298 | XFRMA_SAD_UNSPEC, | |
af11e316 JHS |
299 | XFRMA_SAD_CNT, |
300 | XFRMA_SAD_HINFO, | |
28d8909b JHS |
301 | __XFRMA_SAD_MAX |
302 | ||
303 | #define XFRMA_SAD_MAX (__XFRMA_SAD_MAX - 1) | |
304 | }; | |
305 | ||
af11e316 JHS |
306 | struct xfrmu_sadhinfo { |
307 | __u32 sadhcnt; /* current hash bkts */ | |
308 | __u32 sadhmcnt; /* max allowed hash bkts */ | |
309 | }; | |
310 | ||
ecfd6b18 JHS |
311 | enum xfrm_spdattr_type_t { |
312 | XFRMA_SPD_UNSPEC, | |
5a6d3416 JHS |
313 | XFRMA_SPD_INFO, |
314 | XFRMA_SPD_HINFO, | |
ecfd6b18 JHS |
315 | __XFRMA_SPD_MAX |
316 | ||
317 | #define XFRMA_SPD_MAX (__XFRMA_SPD_MAX - 1) | |
318 | }; | |
319 | ||
5a6d3416 JHS |
320 | struct xfrmu_spdinfo { |
321 | __u32 incnt; | |
322 | __u32 outcnt; | |
323 | __u32 fwdcnt; | |
324 | __u32 inscnt; | |
325 | __u32 outscnt; | |
326 | __u32 fwdscnt; | |
327 | }; | |
328 | ||
329 | struct xfrmu_spdhinfo { | |
330 | __u32 spdhcnt; | |
331 | __u32 spdhmcnt; | |
332 | }; | |
333 | ||
1da177e4 LT |
334 | struct xfrm_usersa_info { |
335 | struct xfrm_selector sel; | |
336 | struct xfrm_id id; | |
337 | xfrm_address_t saddr; | |
338 | struct xfrm_lifetime_cfg lft; | |
339 | struct xfrm_lifetime_cur curlft; | |
340 | struct xfrm_stats stats; | |
341 | __u32 seq; | |
342 | __u32 reqid; | |
343 | __u16 family; | |
7e49e6de | 344 | __u8 mode; /* XFRM_MODE_xxx */ |
1da177e4 LT |
345 | __u8 replay_window; |
346 | __u8 flags; | |
347 | #define XFRM_STATE_NOECN 1 | |
348 | #define XFRM_STATE_DECAP_DSCP 2 | |
dd87147e | 349 | #define XFRM_STATE_NOPMTUDISC 4 |
fbd9a5b4 | 350 | #define XFRM_STATE_WILDRECV 8 |
8b7817f3 | 351 | #define XFRM_STATE_ICMP 16 |
ccf9b3b8 | 352 | #define XFRM_STATE_AF_UNSPEC 32 |
1da177e4 LT |
353 | }; |
354 | ||
355 | struct xfrm_usersa_id { | |
356 | xfrm_address_t daddr; | |
9916ecb0 | 357 | __be32 spi; |
1da177e4 LT |
358 | __u16 family; |
359 | __u8 proto; | |
360 | }; | |
361 | ||
f8cd5488 | 362 | struct xfrm_aevent_id { |
f8cd5488 | 363 | struct xfrm_usersa_id sa_id; |
2b5f6dcc | 364 | xfrm_address_t saddr; |
4bf07ef3 | 365 | __u32 flags; |
2b5f6dcc | 366 | __u32 reqid; |
f8cd5488 JHS |
367 | }; |
368 | ||
1da177e4 LT |
369 | struct xfrm_userspi_info { |
370 | struct xfrm_usersa_info info; | |
371 | __u32 min; | |
372 | __u32 max; | |
373 | }; | |
374 | ||
375 | struct xfrm_userpolicy_info { | |
376 | struct xfrm_selector sel; | |
377 | struct xfrm_lifetime_cfg lft; | |
378 | struct xfrm_lifetime_cur curlft; | |
379 | __u32 priority; | |
380 | __u32 index; | |
381 | __u8 dir; | |
382 | __u8 action; | |
383 | #define XFRM_POLICY_ALLOW 0 | |
384 | #define XFRM_POLICY_BLOCK 1 | |
385 | __u8 flags; | |
386 | #define XFRM_POLICY_LOCALOK 1 /* Allow user to override global policy */ | |
8b7817f3 HX |
387 | /* Automatically expand selector to include matching ICMP payloads. */ |
388 | #define XFRM_POLICY_ICMP 2 | |
1da177e4 LT |
389 | __u8 share; |
390 | }; | |
391 | ||
392 | struct xfrm_userpolicy_id { | |
393 | struct xfrm_selector sel; | |
394 | __u32 index; | |
395 | __u8 dir; | |
396 | }; | |
397 | ||
398 | struct xfrm_user_acquire { | |
399 | struct xfrm_id id; | |
400 | xfrm_address_t saddr; | |
401 | struct xfrm_selector sel; | |
402 | struct xfrm_userpolicy_info policy; | |
403 | __u32 aalgos; | |
404 | __u32 ealgos; | |
405 | __u32 calgos; | |
406 | __u32 seq; | |
407 | }; | |
408 | ||
409 | struct xfrm_user_expire { | |
410 | struct xfrm_usersa_info state; | |
411 | __u8 hard; | |
412 | }; | |
413 | ||
414 | struct xfrm_user_polexpire { | |
415 | struct xfrm_userpolicy_info pol; | |
416 | __u8 hard; | |
417 | }; | |
418 | ||
419 | struct xfrm_usersa_flush { | |
420 | __u8 proto; | |
421 | }; | |
422 | ||
97a64b45 MN |
423 | struct xfrm_user_report { |
424 | __u8 proto; | |
425 | struct xfrm_selector sel; | |
426 | }; | |
427 | ||
13c1d189 AE |
428 | /* Used by MIGRATE to pass addresses IKE should use to perform |
429 | * SA negotiation with the peer */ | |
430 | struct xfrm_user_kmaddress { | |
431 | xfrm_address_t local; | |
432 | xfrm_address_t remote; | |
433 | __u32 reserved; | |
434 | __u16 family; | |
435 | }; | |
436 | ||
80c9abaa SS |
437 | struct xfrm_user_migrate { |
438 | xfrm_address_t old_daddr; | |
439 | xfrm_address_t old_saddr; | |
440 | xfrm_address_t new_daddr; | |
441 | xfrm_address_t new_saddr; | |
442 | __u8 proto; | |
443 | __u8 mode; | |
444 | __u16 reserved; | |
445 | __u32 reqid; | |
446 | __u16 old_family; | |
447 | __u16 new_family; | |
448 | }; | |
449 | ||
3a2dfbe8 MW |
450 | struct xfrm_user_mapping { |
451 | struct xfrm_usersa_id id; | |
452 | __u32 reqid; | |
453 | xfrm_address_t old_saddr; | |
454 | xfrm_address_t new_saddr; | |
455 | __be16 old_sport; | |
456 | __be16 new_sport; | |
457 | }; | |
458 | ||
ac6d439d PM |
459 | #ifndef __KERNEL__ |
460 | /* backwards compatibility for userspace */ | |
1da177e4 LT |
461 | #define XFRMGRP_ACQUIRE 1 |
462 | #define XFRMGRP_EXPIRE 2 | |
26b15dad JHS |
463 | #define XFRMGRP_SA 4 |
464 | #define XFRMGRP_POLICY 8 | |
93366c53 | 465 | #define XFRMGRP_REPORT 0x20 |
ac6d439d PM |
466 | #endif |
467 | ||
468 | enum xfrm_nlgroups { | |
469 | XFRMNLGRP_NONE, | |
470 | #define XFRMNLGRP_NONE XFRMNLGRP_NONE | |
471 | XFRMNLGRP_ACQUIRE, | |
472 | #define XFRMNLGRP_ACQUIRE XFRMNLGRP_ACQUIRE | |
473 | XFRMNLGRP_EXPIRE, | |
474 | #define XFRMNLGRP_EXPIRE XFRMNLGRP_EXPIRE | |
475 | XFRMNLGRP_SA, | |
476 | #define XFRMNLGRP_SA XFRMNLGRP_SA | |
477 | XFRMNLGRP_POLICY, | |
478 | #define XFRMNLGRP_POLICY XFRMNLGRP_POLICY | |
f8cd5488 JHS |
479 | XFRMNLGRP_AEVENTS, |
480 | #define XFRMNLGRP_AEVENTS XFRMNLGRP_AEVENTS | |
97a64b45 MN |
481 | XFRMNLGRP_REPORT, |
482 | #define XFRMNLGRP_REPORT XFRMNLGRP_REPORT | |
80c9abaa SS |
483 | XFRMNLGRP_MIGRATE, |
484 | #define XFRMNLGRP_MIGRATE XFRMNLGRP_MIGRATE | |
3a2dfbe8 MW |
485 | XFRMNLGRP_MAPPING, |
486 | #define XFRMNLGRP_MAPPING XFRMNLGRP_MAPPING | |
ac6d439d PM |
487 | __XFRMNLGRP_MAX |
488 | }; | |
489 | #define XFRMNLGRP_MAX (__XFRMNLGRP_MAX - 1) | |
1da177e4 LT |
490 | |
491 | #endif /* _LINUX_XFRM_H */ |