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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 | */ | |
13 | typedef union | |
14 | { | |
737b5761 AV |
15 | __be32 a4; |
16 | __be32 a6[4]; | |
1da177e4 LT |
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; | |
e037c39b | 26 | __be32 spi; |
1da177e4 LT |
27 | __u8 proto; |
28 | }; | |
29 | ||
df71837d TJ |
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 | ||
1da177e4 LT |
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; | |
8f83f23e AV |
52 | __be16 dport; |
53 | __be16 dport_mask; | |
54 | __be16 sport; | |
55 | __be16 sport_mask; | |
1da177e4 LT |
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 { | |
3f4afb64 | 94 | char alg_name[64]; |
ba749ae9 | 95 | unsigned int alg_key_len; /* in bits */ |
3f4afb64 | 96 | char alg_key[0]; |
1da177e4 LT |
97 | }; |
98 | ||
1a6509d9 | 99 | struct xfrm_algo_aead { |
461e6c85 ED |
100 | char alg_name[64]; |
101 | unsigned int alg_key_len; /* in bits */ | |
102 | unsigned int alg_icv_len; /* in bits */ | |
103 | char alg_key[0]; | |
1a6509d9 HX |
104 | }; |
105 | ||
1da177e4 LT |
106 | struct xfrm_stats { |
107 | __u32 replay_window; | |
108 | __u32 replay; | |
109 | __u32 integrity_failed; | |
110 | }; | |
111 | ||
4e81bb83 MN |
112 | enum |
113 | { | |
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 | ||
1da177e4 LT |
120 | enum |
121 | { | |
122 | XFRM_POLICY_IN = 0, | |
123 | XFRM_POLICY_OUT = 1, | |
124 | XFRM_POLICY_FWD = 2, | |
d5422efe | 125 | XFRM_POLICY_MASK = 3, |
1da177e4 LT |
126 | XFRM_POLICY_MAX = 3 |
127 | }; | |
128 | ||
129 | enum | |
130 | { | |
131 | XFRM_SHARE_ANY, /* No limitations */ | |
132 | XFRM_SHARE_SESSION, /* For this session only */ | |
133 | XFRM_SHARE_USER, /* For this user only */ | |
134 | XFRM_SHARE_UNIQUE /* Use once */ | |
135 | }; | |
136 | ||
b59f45d0 HX |
137 | #define XFRM_MODE_TRANSPORT 0 |
138 | #define XFRM_MODE_TUNNEL 1 | |
7e49e6de MN |
139 | #define XFRM_MODE_ROUTEOPTIMIZATION 2 |
140 | #define XFRM_MODE_IN_TRIGGER 3 | |
0a69452c DB |
141 | #define XFRM_MODE_BEET 4 |
142 | #define XFRM_MODE_MAX 5 | |
b59f45d0 | 143 | |
1da177e4 LT |
144 | /* Netlink configuration messages. */ |
145 | enum { | |
146 | XFRM_MSG_BASE = 0x10, | |
147 | ||
148 | XFRM_MSG_NEWSA = 0x10, | |
149 | #define XFRM_MSG_NEWSA XFRM_MSG_NEWSA | |
150 | XFRM_MSG_DELSA, | |
151 | #define XFRM_MSG_DELSA XFRM_MSG_DELSA | |
152 | XFRM_MSG_GETSA, | |
153 | #define XFRM_MSG_GETSA XFRM_MSG_GETSA | |
154 | ||
155 | XFRM_MSG_NEWPOLICY, | |
156 | #define XFRM_MSG_NEWPOLICY XFRM_MSG_NEWPOLICY | |
157 | XFRM_MSG_DELPOLICY, | |
158 | #define XFRM_MSG_DELPOLICY XFRM_MSG_DELPOLICY | |
159 | XFRM_MSG_GETPOLICY, | |
160 | #define XFRM_MSG_GETPOLICY XFRM_MSG_GETPOLICY | |
161 | ||
162 | XFRM_MSG_ALLOCSPI, | |
163 | #define XFRM_MSG_ALLOCSPI XFRM_MSG_ALLOCSPI | |
164 | XFRM_MSG_ACQUIRE, | |
165 | #define XFRM_MSG_ACQUIRE XFRM_MSG_ACQUIRE | |
166 | XFRM_MSG_EXPIRE, | |
167 | #define XFRM_MSG_EXPIRE XFRM_MSG_EXPIRE | |
168 | ||
169 | XFRM_MSG_UPDPOLICY, | |
170 | #define XFRM_MSG_UPDPOLICY XFRM_MSG_UPDPOLICY | |
171 | XFRM_MSG_UPDSA, | |
172 | #define XFRM_MSG_UPDSA XFRM_MSG_UPDSA | |
173 | ||
174 | XFRM_MSG_POLEXPIRE, | |
175 | #define XFRM_MSG_POLEXPIRE XFRM_MSG_POLEXPIRE | |
176 | ||
177 | XFRM_MSG_FLUSHSA, | |
178 | #define XFRM_MSG_FLUSHSA XFRM_MSG_FLUSHSA | |
179 | XFRM_MSG_FLUSHPOLICY, | |
180 | #define XFRM_MSG_FLUSHPOLICY XFRM_MSG_FLUSHPOLICY | |
181 | ||
f8cd5488 JHS |
182 | XFRM_MSG_NEWAE, |
183 | #define XFRM_MSG_NEWAE XFRM_MSG_NEWAE | |
184 | XFRM_MSG_GETAE, | |
185 | #define XFRM_MSG_GETAE XFRM_MSG_GETAE | |
97a64b45 MN |
186 | |
187 | XFRM_MSG_REPORT, | |
188 | #define XFRM_MSG_REPORT XFRM_MSG_REPORT | |
189 | ||
80c9abaa SS |
190 | XFRM_MSG_MIGRATE, |
191 | #define XFRM_MSG_MIGRATE XFRM_MSG_MIGRATE | |
192 | ||
28d8909b JHS |
193 | XFRM_MSG_NEWSADINFO, |
194 | #define XFRM_MSG_NEWSADINFO XFRM_MSG_NEWSADINFO | |
195 | XFRM_MSG_GETSADINFO, | |
196 | #define XFRM_MSG_GETSADINFO XFRM_MSG_GETSADINFO | |
ecfd6b18 JHS |
197 | |
198 | XFRM_MSG_NEWSPDINFO, | |
199 | #define XFRM_MSG_NEWSPDINFO XFRM_MSG_NEWSPDINFO | |
200 | XFRM_MSG_GETSPDINFO, | |
201 | #define XFRM_MSG_GETSPDINFO XFRM_MSG_GETSPDINFO | |
3a2dfbe8 MW |
202 | |
203 | XFRM_MSG_MAPPING, | |
204 | #define XFRM_MSG_MAPPING XFRM_MSG_MAPPING | |
526bdb80 | 205 | __XFRM_MSG_MAX |
1da177e4 | 206 | }; |
526bdb80 | 207 | #define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1) |
1da177e4 | 208 | |
492b558b TG |
209 | #define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE) |
210 | ||
df71837d TJ |
211 | /* |
212 | * Generic LSM security context for comunicating to user space | |
213 | * NOTE: Same format as sadb_x_sec_ctx | |
214 | */ | |
215 | struct xfrm_user_sec_ctx { | |
216 | __u16 len; | |
217 | __u16 exttype; | |
218 | __u8 ctx_alg; /* LSMs: e.g., selinux == 1 */ | |
219 | __u8 ctx_doi; | |
220 | __u16 ctx_len; | |
221 | }; | |
222 | ||
1da177e4 LT |
223 | struct xfrm_user_tmpl { |
224 | struct xfrm_id id; | |
225 | __u16 family; | |
226 | xfrm_address_t saddr; | |
227 | __u32 reqid; | |
228 | __u8 mode; | |
229 | __u8 share; | |
230 | __u8 optional; | |
231 | __u32 aalgos; | |
232 | __u32 ealgos; | |
233 | __u32 calgos; | |
234 | }; | |
235 | ||
236 | struct xfrm_encap_tmpl { | |
237 | __u16 encap_type; | |
d5a0a1e3 AV |
238 | __be16 encap_sport; |
239 | __be16 encap_dport; | |
1da177e4 LT |
240 | xfrm_address_t encap_oa; |
241 | }; | |
242 | ||
f8cd5488 JHS |
243 | /* AEVENT flags */ |
244 | enum xfrm_ae_ftype_t { | |
245 | XFRM_AE_UNSPEC, | |
246 | XFRM_AE_RTHR=1, /* replay threshold*/ | |
247 | XFRM_AE_RVAL=2, /* replay value */ | |
248 | XFRM_AE_LVAL=4, /* lifetime value */ | |
249 | XFRM_AE_ETHR=8, /* expiry timer threshold */ | |
250 | XFRM_AE_CR=16, /* Event cause is replay update */ | |
251 | XFRM_AE_CE=32, /* Event cause is timer expiry */ | |
252 | XFRM_AE_CU=64, /* Event cause is policy update */ | |
253 | __XFRM_AE_MAX | |
254 | ||
255 | #define XFRM_AE_MAX (__XFRM_AE_MAX - 1) | |
256 | }; | |
257 | ||
f7b6983f MN |
258 | struct xfrm_userpolicy_type { |
259 | __u8 type; | |
260 | __u16 reserved1; | |
261 | __u8 reserved2; | |
262 | }; | |
263 | ||
1da177e4 LT |
264 | /* Netlink message attributes. */ |
265 | enum xfrm_attr_type_t { | |
266 | XFRMA_UNSPEC, | |
267 | XFRMA_ALG_AUTH, /* struct xfrm_algo */ | |
268 | XFRMA_ALG_CRYPT, /* struct xfrm_algo */ | |
269 | XFRMA_ALG_COMP, /* struct xfrm_algo */ | |
270 | XFRMA_ENCAP, /* struct xfrm_algo + struct xfrm_encap_tmpl */ | |
271 | XFRMA_TMPL, /* 1 or more struct xfrm_user_tmpl */ | |
0603eac0 HX |
272 | XFRMA_SA, |
273 | XFRMA_POLICY, | |
df71837d | 274 | XFRMA_SEC_CTX, /* struct xfrm_sec_ctx */ |
f8cd5488 JHS |
275 | XFRMA_LTIME_VAL, |
276 | XFRMA_REPLAY_VAL, | |
277 | XFRMA_REPLAY_THRESH, | |
278 | XFRMA_ETIMER_THRESH, | |
eb2971b6 | 279 | XFRMA_SRCADDR, /* xfrm_address_t */ |
060f02a3 | 280 | XFRMA_COADDR, /* xfrm_address_t */ |
9afaca05 | 281 | XFRMA_LASTUSED, |
f7b6983f | 282 | XFRMA_POLICY_TYPE, /* struct xfrm_userpolicy_type */ |
80c9abaa | 283 | XFRMA_MIGRATE, |
1a6509d9 | 284 | XFRMA_ALG_AEAD, /* struct xfrm_algo_aead */ |
13c1d189 | 285 | XFRMA_KMADDRESS, /* struct xfrm_user_kmaddress */ |
1da177e4 LT |
286 | __XFRMA_MAX |
287 | ||
288 | #define XFRMA_MAX (__XFRMA_MAX - 1) | |
289 | }; | |
290 | ||
28d8909b JHS |
291 | enum xfrm_sadattr_type_t { |
292 | XFRMA_SAD_UNSPEC, | |
af11e316 JHS |
293 | XFRMA_SAD_CNT, |
294 | XFRMA_SAD_HINFO, | |
28d8909b JHS |
295 | __XFRMA_SAD_MAX |
296 | ||
297 | #define XFRMA_SAD_MAX (__XFRMA_SAD_MAX - 1) | |
298 | }; | |
299 | ||
af11e316 JHS |
300 | struct xfrmu_sadhinfo { |
301 | __u32 sadhcnt; /* current hash bkts */ | |
302 | __u32 sadhmcnt; /* max allowed hash bkts */ | |
303 | }; | |
304 | ||
ecfd6b18 JHS |
305 | enum xfrm_spdattr_type_t { |
306 | XFRMA_SPD_UNSPEC, | |
5a6d3416 JHS |
307 | XFRMA_SPD_INFO, |
308 | XFRMA_SPD_HINFO, | |
ecfd6b18 JHS |
309 | __XFRMA_SPD_MAX |
310 | ||
311 | #define XFRMA_SPD_MAX (__XFRMA_SPD_MAX - 1) | |
312 | }; | |
313 | ||
5a6d3416 JHS |
314 | struct xfrmu_spdinfo { |
315 | __u32 incnt; | |
316 | __u32 outcnt; | |
317 | __u32 fwdcnt; | |
318 | __u32 inscnt; | |
319 | __u32 outscnt; | |
320 | __u32 fwdscnt; | |
321 | }; | |
322 | ||
323 | struct xfrmu_spdhinfo { | |
324 | __u32 spdhcnt; | |
325 | __u32 spdhmcnt; | |
326 | }; | |
327 | ||
1da177e4 LT |
328 | struct xfrm_usersa_info { |
329 | struct xfrm_selector sel; | |
330 | struct xfrm_id id; | |
331 | xfrm_address_t saddr; | |
332 | struct xfrm_lifetime_cfg lft; | |
333 | struct xfrm_lifetime_cur curlft; | |
334 | struct xfrm_stats stats; | |
335 | __u32 seq; | |
336 | __u32 reqid; | |
337 | __u16 family; | |
7e49e6de | 338 | __u8 mode; /* XFRM_MODE_xxx */ |
1da177e4 LT |
339 | __u8 replay_window; |
340 | __u8 flags; | |
341 | #define XFRM_STATE_NOECN 1 | |
342 | #define XFRM_STATE_DECAP_DSCP 2 | |
dd87147e | 343 | #define XFRM_STATE_NOPMTUDISC 4 |
fbd9a5b4 | 344 | #define XFRM_STATE_WILDRECV 8 |
8b7817f3 | 345 | #define XFRM_STATE_ICMP 16 |
ccf9b3b8 | 346 | #define XFRM_STATE_AF_UNSPEC 32 |
1da177e4 LT |
347 | }; |
348 | ||
349 | struct xfrm_usersa_id { | |
350 | xfrm_address_t daddr; | |
9916ecb0 | 351 | __be32 spi; |
1da177e4 LT |
352 | __u16 family; |
353 | __u8 proto; | |
354 | }; | |
355 | ||
f8cd5488 | 356 | struct xfrm_aevent_id { |
f8cd5488 | 357 | struct xfrm_usersa_id sa_id; |
2b5f6dcc | 358 | xfrm_address_t saddr; |
4bf07ef3 | 359 | __u32 flags; |
2b5f6dcc | 360 | __u32 reqid; |
f8cd5488 JHS |
361 | }; |
362 | ||
1da177e4 LT |
363 | struct xfrm_userspi_info { |
364 | struct xfrm_usersa_info info; | |
365 | __u32 min; | |
366 | __u32 max; | |
367 | }; | |
368 | ||
369 | struct xfrm_userpolicy_info { | |
370 | struct xfrm_selector sel; | |
371 | struct xfrm_lifetime_cfg lft; | |
372 | struct xfrm_lifetime_cur curlft; | |
373 | __u32 priority; | |
374 | __u32 index; | |
375 | __u8 dir; | |
376 | __u8 action; | |
377 | #define XFRM_POLICY_ALLOW 0 | |
378 | #define XFRM_POLICY_BLOCK 1 | |
379 | __u8 flags; | |
380 | #define XFRM_POLICY_LOCALOK 1 /* Allow user to override global policy */ | |
8b7817f3 HX |
381 | /* Automatically expand selector to include matching ICMP payloads. */ |
382 | #define XFRM_POLICY_ICMP 2 | |
1da177e4 LT |
383 | __u8 share; |
384 | }; | |
385 | ||
386 | struct xfrm_userpolicy_id { | |
387 | struct xfrm_selector sel; | |
388 | __u32 index; | |
389 | __u8 dir; | |
390 | }; | |
391 | ||
392 | struct xfrm_user_acquire { | |
393 | struct xfrm_id id; | |
394 | xfrm_address_t saddr; | |
395 | struct xfrm_selector sel; | |
396 | struct xfrm_userpolicy_info policy; | |
397 | __u32 aalgos; | |
398 | __u32 ealgos; | |
399 | __u32 calgos; | |
400 | __u32 seq; | |
401 | }; | |
402 | ||
403 | struct xfrm_user_expire { | |
404 | struct xfrm_usersa_info state; | |
405 | __u8 hard; | |
406 | }; | |
407 | ||
408 | struct xfrm_user_polexpire { | |
409 | struct xfrm_userpolicy_info pol; | |
410 | __u8 hard; | |
411 | }; | |
412 | ||
413 | struct xfrm_usersa_flush { | |
414 | __u8 proto; | |
415 | }; | |
416 | ||
97a64b45 MN |
417 | struct xfrm_user_report { |
418 | __u8 proto; | |
419 | struct xfrm_selector sel; | |
420 | }; | |
421 | ||
13c1d189 AE |
422 | /* Used by MIGRATE to pass addresses IKE should use to perform |
423 | * SA negotiation with the peer */ | |
424 | struct xfrm_user_kmaddress { | |
425 | xfrm_address_t local; | |
426 | xfrm_address_t remote; | |
427 | __u32 reserved; | |
428 | __u16 family; | |
429 | }; | |
430 | ||
80c9abaa SS |
431 | struct xfrm_user_migrate { |
432 | xfrm_address_t old_daddr; | |
433 | xfrm_address_t old_saddr; | |
434 | xfrm_address_t new_daddr; | |
435 | xfrm_address_t new_saddr; | |
436 | __u8 proto; | |
437 | __u8 mode; | |
438 | __u16 reserved; | |
439 | __u32 reqid; | |
440 | __u16 old_family; | |
441 | __u16 new_family; | |
442 | }; | |
443 | ||
3a2dfbe8 MW |
444 | struct xfrm_user_mapping { |
445 | struct xfrm_usersa_id id; | |
446 | __u32 reqid; | |
447 | xfrm_address_t old_saddr; | |
448 | xfrm_address_t new_saddr; | |
449 | __be16 old_sport; | |
450 | __be16 new_sport; | |
451 | }; | |
452 | ||
ac6d439d PM |
453 | #ifndef __KERNEL__ |
454 | /* backwards compatibility for userspace */ | |
1da177e4 LT |
455 | #define XFRMGRP_ACQUIRE 1 |
456 | #define XFRMGRP_EXPIRE 2 | |
26b15dad JHS |
457 | #define XFRMGRP_SA 4 |
458 | #define XFRMGRP_POLICY 8 | |
93366c53 | 459 | #define XFRMGRP_REPORT 0x20 |
ac6d439d PM |
460 | #endif |
461 | ||
462 | enum xfrm_nlgroups { | |
463 | XFRMNLGRP_NONE, | |
464 | #define XFRMNLGRP_NONE XFRMNLGRP_NONE | |
465 | XFRMNLGRP_ACQUIRE, | |
466 | #define XFRMNLGRP_ACQUIRE XFRMNLGRP_ACQUIRE | |
467 | XFRMNLGRP_EXPIRE, | |
468 | #define XFRMNLGRP_EXPIRE XFRMNLGRP_EXPIRE | |
469 | XFRMNLGRP_SA, | |
470 | #define XFRMNLGRP_SA XFRMNLGRP_SA | |
471 | XFRMNLGRP_POLICY, | |
472 | #define XFRMNLGRP_POLICY XFRMNLGRP_POLICY | |
f8cd5488 JHS |
473 | XFRMNLGRP_AEVENTS, |
474 | #define XFRMNLGRP_AEVENTS XFRMNLGRP_AEVENTS | |
97a64b45 MN |
475 | XFRMNLGRP_REPORT, |
476 | #define XFRMNLGRP_REPORT XFRMNLGRP_REPORT | |
80c9abaa SS |
477 | XFRMNLGRP_MIGRATE, |
478 | #define XFRMNLGRP_MIGRATE XFRMNLGRP_MIGRATE | |
3a2dfbe8 MW |
479 | XFRMNLGRP_MAPPING, |
480 | #define XFRMNLGRP_MAPPING XFRMNLGRP_MAPPING | |
ac6d439d PM |
481 | __XFRMNLGRP_MAX |
482 | }; | |
483 | #define XFRMNLGRP_MAX (__XFRMNLGRP_MAX - 1) | |
1da177e4 LT |
484 | |
485 | #endif /* _LINUX_XFRM_H */ |