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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 { | |
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 | ||
4e81bb83 MN |
105 | enum |
106 | { | |
107 | XFRM_POLICY_TYPE_MAIN = 0, | |
108 | XFRM_POLICY_TYPE_SUB = 1, | |
109 | XFRM_POLICY_TYPE_MAX = 2 | |
110 | }; | |
111 | ||
1da177e4 LT |
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 | ||
b59f45d0 HX |
128 | #define XFRM_MODE_TRANSPORT 0 |
129 | #define XFRM_MODE_TUNNEL 1 | |
7e49e6de MN |
130 | #define XFRM_MODE_ROUTEOPTIMIZATION 2 |
131 | #define XFRM_MODE_IN_TRIGGER 3 | |
0a69452c DB |
132 | #define XFRM_MODE_BEET 4 |
133 | #define XFRM_MODE_MAX 5 | |
b59f45d0 | 134 | |
1da177e4 LT |
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 | ||
f8cd5488 JHS |
173 | XFRM_MSG_NEWAE, |
174 | #define XFRM_MSG_NEWAE XFRM_MSG_NEWAE | |
175 | XFRM_MSG_GETAE, | |
176 | #define XFRM_MSG_GETAE XFRM_MSG_GETAE | |
97a64b45 MN |
177 | |
178 | XFRM_MSG_REPORT, | |
179 | #define XFRM_MSG_REPORT XFRM_MSG_REPORT | |
180 | ||
80c9abaa SS |
181 | XFRM_MSG_MIGRATE, |
182 | #define XFRM_MSG_MIGRATE XFRM_MSG_MIGRATE | |
183 | ||
28d8909b JHS |
184 | XFRM_MSG_NEWSADINFO, |
185 | #define XFRM_MSG_NEWSADINFO XFRM_MSG_NEWSADINFO | |
186 | XFRM_MSG_GETSADINFO, | |
187 | #define XFRM_MSG_GETSADINFO XFRM_MSG_GETSADINFO | |
ecfd6b18 JHS |
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 | |
526bdb80 | 193 | __XFRM_MSG_MAX |
1da177e4 | 194 | }; |
526bdb80 | 195 | #define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1) |
1da177e4 | 196 | |
492b558b TG |
197 | #define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE) |
198 | ||
df71837d TJ |
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 | ||
1da177e4 LT |
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; | |
d5a0a1e3 AV |
226 | __be16 encap_sport; |
227 | __be16 encap_dport; | |
1da177e4 LT |
228 | xfrm_address_t encap_oa; |
229 | }; | |
230 | ||
f8cd5488 JHS |
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 | ||
f7b6983f MN |
246 | struct xfrm_userpolicy_type { |
247 | __u8 type; | |
248 | __u16 reserved1; | |
249 | __u8 reserved2; | |
250 | }; | |
251 | ||
1da177e4 LT |
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 */ | |
0603eac0 HX |
260 | XFRMA_SA, |
261 | XFRMA_POLICY, | |
df71837d | 262 | XFRMA_SEC_CTX, /* struct xfrm_sec_ctx */ |
f8cd5488 JHS |
263 | XFRMA_LTIME_VAL, |
264 | XFRMA_REPLAY_VAL, | |
265 | XFRMA_REPLAY_THRESH, | |
266 | XFRMA_ETIMER_THRESH, | |
eb2971b6 | 267 | XFRMA_SRCADDR, /* xfrm_address_t */ |
060f02a3 | 268 | XFRMA_COADDR, /* xfrm_address_t */ |
9afaca05 | 269 | XFRMA_LASTUSED, |
f7b6983f | 270 | XFRMA_POLICY_TYPE, /* struct xfrm_userpolicy_type */ |
80c9abaa | 271 | XFRMA_MIGRATE, |
1da177e4 LT |
272 | __XFRMA_MAX |
273 | ||
274 | #define XFRMA_MAX (__XFRMA_MAX - 1) | |
275 | }; | |
276 | ||
28d8909b JHS |
277 | enum xfrm_sadattr_type_t { |
278 | XFRMA_SAD_UNSPEC, | |
af11e316 JHS |
279 | XFRMA_SAD_CNT, |
280 | XFRMA_SAD_HINFO, | |
28d8909b JHS |
281 | __XFRMA_SAD_MAX |
282 | ||
283 | #define XFRMA_SAD_MAX (__XFRMA_SAD_MAX - 1) | |
284 | }; | |
285 | ||
af11e316 JHS |
286 | struct xfrmu_sadhinfo { |
287 | __u32 sadhcnt; /* current hash bkts */ | |
288 | __u32 sadhmcnt; /* max allowed hash bkts */ | |
289 | }; | |
290 | ||
ecfd6b18 JHS |
291 | enum xfrm_spdattr_type_t { |
292 | XFRMA_SPD_UNSPEC, | |
5a6d3416 JHS |
293 | XFRMA_SPD_INFO, |
294 | XFRMA_SPD_HINFO, | |
ecfd6b18 JHS |
295 | __XFRMA_SPD_MAX |
296 | ||
297 | #define XFRMA_SPD_MAX (__XFRMA_SPD_MAX - 1) | |
298 | }; | |
299 | ||
5a6d3416 JHS |
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 | ||
1da177e4 LT |
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; | |
7e49e6de | 324 | __u8 mode; /* XFRM_MODE_xxx */ |
1da177e4 LT |
325 | __u8 replay_window; |
326 | __u8 flags; | |
327 | #define XFRM_STATE_NOECN 1 | |
328 | #define XFRM_STATE_DECAP_DSCP 2 | |
dd87147e | 329 | #define XFRM_STATE_NOPMTUDISC 4 |
fbd9a5b4 | 330 | #define XFRM_STATE_WILDRECV 8 |
1da177e4 LT |
331 | }; |
332 | ||
333 | struct xfrm_usersa_id { | |
334 | xfrm_address_t daddr; | |
9916ecb0 | 335 | __be32 spi; |
1da177e4 LT |
336 | __u16 family; |
337 | __u8 proto; | |
338 | }; | |
339 | ||
f8cd5488 | 340 | struct xfrm_aevent_id { |
f8cd5488 | 341 | struct xfrm_usersa_id sa_id; |
2b5f6dcc | 342 | xfrm_address_t saddr; |
4bf07ef3 | 343 | __u32 flags; |
2b5f6dcc | 344 | __u32 reqid; |
f8cd5488 JHS |
345 | }; |
346 | ||
1da177e4 LT |
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 | ||
97a64b45 MN |
399 | struct xfrm_user_report { |
400 | __u8 proto; | |
401 | struct xfrm_selector sel; | |
402 | }; | |
403 | ||
80c9abaa SS |
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 | ||
ac6d439d PM |
417 | #ifndef __KERNEL__ |
418 | /* backwards compatibility for userspace */ | |
1da177e4 LT |
419 | #define XFRMGRP_ACQUIRE 1 |
420 | #define XFRMGRP_EXPIRE 2 | |
26b15dad JHS |
421 | #define XFRMGRP_SA 4 |
422 | #define XFRMGRP_POLICY 8 | |
93366c53 | 423 | #define XFRMGRP_REPORT 0x20 |
ac6d439d PM |
424 | #endif |
425 | ||
426 | enum xfrm_nlgroups { | |
427 | XFRMNLGRP_NONE, | |
428 | #define XFRMNLGRP_NONE XFRMNLGRP_NONE | |
429 | XFRMNLGRP_ACQUIRE, | |
430 | #define XFRMNLGRP_ACQUIRE XFRMNLGRP_ACQUIRE | |
431 | XFRMNLGRP_EXPIRE, | |
432 | #define XFRMNLGRP_EXPIRE XFRMNLGRP_EXPIRE | |
433 | XFRMNLGRP_SA, | |
434 | #define XFRMNLGRP_SA XFRMNLGRP_SA | |
435 | XFRMNLGRP_POLICY, | |
436 | #define XFRMNLGRP_POLICY XFRMNLGRP_POLICY | |
f8cd5488 JHS |
437 | XFRMNLGRP_AEVENTS, |
438 | #define XFRMNLGRP_AEVENTS XFRMNLGRP_AEVENTS | |
97a64b45 MN |
439 | XFRMNLGRP_REPORT, |
440 | #define XFRMNLGRP_REPORT XFRMNLGRP_REPORT | |
80c9abaa SS |
441 | XFRMNLGRP_MIGRATE, |
442 | #define XFRMNLGRP_MIGRATE XFRMNLGRP_MIGRATE | |
ac6d439d PM |
443 | __XFRMNLGRP_MAX |
444 | }; | |
445 | #define XFRMNLGRP_MAX (__XFRMNLGRP_MAX - 1) | |
1da177e4 LT |
446 | |
447 | #endif /* _LINUX_XFRM_H */ |