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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 | ||
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, | |
d5422efe | 117 | XFRM_POLICY_MASK = 3, |
1da177e4 LT |
118 | XFRM_POLICY_MAX = 3 |
119 | }; | |
120 | ||
121 | enum | |
122 | { | |
123 | XFRM_SHARE_ANY, /* No limitations */ | |
124 | XFRM_SHARE_SESSION, /* For this session only */ | |
125 | XFRM_SHARE_USER, /* For this user only */ | |
126 | XFRM_SHARE_UNIQUE /* Use once */ | |
127 | }; | |
128 | ||
b59f45d0 HX |
129 | #define XFRM_MODE_TRANSPORT 0 |
130 | #define XFRM_MODE_TUNNEL 1 | |
7e49e6de MN |
131 | #define XFRM_MODE_ROUTEOPTIMIZATION 2 |
132 | #define XFRM_MODE_IN_TRIGGER 3 | |
0a69452c DB |
133 | #define XFRM_MODE_BEET 4 |
134 | #define XFRM_MODE_MAX 5 | |
b59f45d0 | 135 | |
1da177e4 LT |
136 | /* Netlink configuration messages. */ |
137 | enum { | |
138 | XFRM_MSG_BASE = 0x10, | |
139 | ||
140 | XFRM_MSG_NEWSA = 0x10, | |
141 | #define XFRM_MSG_NEWSA XFRM_MSG_NEWSA | |
142 | XFRM_MSG_DELSA, | |
143 | #define XFRM_MSG_DELSA XFRM_MSG_DELSA | |
144 | XFRM_MSG_GETSA, | |
145 | #define XFRM_MSG_GETSA XFRM_MSG_GETSA | |
146 | ||
147 | XFRM_MSG_NEWPOLICY, | |
148 | #define XFRM_MSG_NEWPOLICY XFRM_MSG_NEWPOLICY | |
149 | XFRM_MSG_DELPOLICY, | |
150 | #define XFRM_MSG_DELPOLICY XFRM_MSG_DELPOLICY | |
151 | XFRM_MSG_GETPOLICY, | |
152 | #define XFRM_MSG_GETPOLICY XFRM_MSG_GETPOLICY | |
153 | ||
154 | XFRM_MSG_ALLOCSPI, | |
155 | #define XFRM_MSG_ALLOCSPI XFRM_MSG_ALLOCSPI | |
156 | XFRM_MSG_ACQUIRE, | |
157 | #define XFRM_MSG_ACQUIRE XFRM_MSG_ACQUIRE | |
158 | XFRM_MSG_EXPIRE, | |
159 | #define XFRM_MSG_EXPIRE XFRM_MSG_EXPIRE | |
160 | ||
161 | XFRM_MSG_UPDPOLICY, | |
162 | #define XFRM_MSG_UPDPOLICY XFRM_MSG_UPDPOLICY | |
163 | XFRM_MSG_UPDSA, | |
164 | #define XFRM_MSG_UPDSA XFRM_MSG_UPDSA | |
165 | ||
166 | XFRM_MSG_POLEXPIRE, | |
167 | #define XFRM_MSG_POLEXPIRE XFRM_MSG_POLEXPIRE | |
168 | ||
169 | XFRM_MSG_FLUSHSA, | |
170 | #define XFRM_MSG_FLUSHSA XFRM_MSG_FLUSHSA | |
171 | XFRM_MSG_FLUSHPOLICY, | |
172 | #define XFRM_MSG_FLUSHPOLICY XFRM_MSG_FLUSHPOLICY | |
173 | ||
f8cd5488 JHS |
174 | XFRM_MSG_NEWAE, |
175 | #define XFRM_MSG_NEWAE XFRM_MSG_NEWAE | |
176 | XFRM_MSG_GETAE, | |
177 | #define XFRM_MSG_GETAE XFRM_MSG_GETAE | |
97a64b45 MN |
178 | |
179 | XFRM_MSG_REPORT, | |
180 | #define XFRM_MSG_REPORT XFRM_MSG_REPORT | |
181 | ||
80c9abaa SS |
182 | XFRM_MSG_MIGRATE, |
183 | #define XFRM_MSG_MIGRATE XFRM_MSG_MIGRATE | |
184 | ||
28d8909b JHS |
185 | XFRM_MSG_NEWSADINFO, |
186 | #define XFRM_MSG_NEWSADINFO XFRM_MSG_NEWSADINFO | |
187 | XFRM_MSG_GETSADINFO, | |
188 | #define XFRM_MSG_GETSADINFO XFRM_MSG_GETSADINFO | |
ecfd6b18 JHS |
189 | |
190 | XFRM_MSG_NEWSPDINFO, | |
191 | #define XFRM_MSG_NEWSPDINFO XFRM_MSG_NEWSPDINFO | |
192 | XFRM_MSG_GETSPDINFO, | |
193 | #define XFRM_MSG_GETSPDINFO XFRM_MSG_GETSPDINFO | |
526bdb80 | 194 | __XFRM_MSG_MAX |
1da177e4 | 195 | }; |
526bdb80 | 196 | #define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1) |
1da177e4 | 197 | |
492b558b TG |
198 | #define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE) |
199 | ||
df71837d TJ |
200 | /* |
201 | * Generic LSM security context for comunicating to user space | |
202 | * NOTE: Same format as sadb_x_sec_ctx | |
203 | */ | |
204 | struct xfrm_user_sec_ctx { | |
205 | __u16 len; | |
206 | __u16 exttype; | |
207 | __u8 ctx_alg; /* LSMs: e.g., selinux == 1 */ | |
208 | __u8 ctx_doi; | |
209 | __u16 ctx_len; | |
210 | }; | |
211 | ||
1da177e4 LT |
212 | struct xfrm_user_tmpl { |
213 | struct xfrm_id id; | |
214 | __u16 family; | |
215 | xfrm_address_t saddr; | |
216 | __u32 reqid; | |
217 | __u8 mode; | |
218 | __u8 share; | |
219 | __u8 optional; | |
220 | __u32 aalgos; | |
221 | __u32 ealgos; | |
222 | __u32 calgos; | |
223 | }; | |
224 | ||
225 | struct xfrm_encap_tmpl { | |
226 | __u16 encap_type; | |
d5a0a1e3 AV |
227 | __be16 encap_sport; |
228 | __be16 encap_dport; | |
1da177e4 LT |
229 | xfrm_address_t encap_oa; |
230 | }; | |
231 | ||
f8cd5488 JHS |
232 | /* AEVENT flags */ |
233 | enum xfrm_ae_ftype_t { | |
234 | XFRM_AE_UNSPEC, | |
235 | XFRM_AE_RTHR=1, /* replay threshold*/ | |
236 | XFRM_AE_RVAL=2, /* replay value */ | |
237 | XFRM_AE_LVAL=4, /* lifetime value */ | |
238 | XFRM_AE_ETHR=8, /* expiry timer threshold */ | |
239 | XFRM_AE_CR=16, /* Event cause is replay update */ | |
240 | XFRM_AE_CE=32, /* Event cause is timer expiry */ | |
241 | XFRM_AE_CU=64, /* Event cause is policy update */ | |
242 | __XFRM_AE_MAX | |
243 | ||
244 | #define XFRM_AE_MAX (__XFRM_AE_MAX - 1) | |
245 | }; | |
246 | ||
f7b6983f MN |
247 | struct xfrm_userpolicy_type { |
248 | __u8 type; | |
249 | __u16 reserved1; | |
250 | __u8 reserved2; | |
251 | }; | |
252 | ||
1da177e4 LT |
253 | /* Netlink message attributes. */ |
254 | enum xfrm_attr_type_t { | |
255 | XFRMA_UNSPEC, | |
256 | XFRMA_ALG_AUTH, /* struct xfrm_algo */ | |
257 | XFRMA_ALG_CRYPT, /* struct xfrm_algo */ | |
258 | XFRMA_ALG_COMP, /* struct xfrm_algo */ | |
259 | XFRMA_ENCAP, /* struct xfrm_algo + struct xfrm_encap_tmpl */ | |
260 | XFRMA_TMPL, /* 1 or more struct xfrm_user_tmpl */ | |
0603eac0 HX |
261 | XFRMA_SA, |
262 | XFRMA_POLICY, | |
df71837d | 263 | XFRMA_SEC_CTX, /* struct xfrm_sec_ctx */ |
f8cd5488 JHS |
264 | XFRMA_LTIME_VAL, |
265 | XFRMA_REPLAY_VAL, | |
266 | XFRMA_REPLAY_THRESH, | |
267 | XFRMA_ETIMER_THRESH, | |
eb2971b6 | 268 | XFRMA_SRCADDR, /* xfrm_address_t */ |
060f02a3 | 269 | XFRMA_COADDR, /* xfrm_address_t */ |
9afaca05 | 270 | XFRMA_LASTUSED, |
f7b6983f | 271 | XFRMA_POLICY_TYPE, /* struct xfrm_userpolicy_type */ |
80c9abaa | 272 | XFRMA_MIGRATE, |
1da177e4 LT |
273 | __XFRMA_MAX |
274 | ||
275 | #define XFRMA_MAX (__XFRMA_MAX - 1) | |
276 | }; | |
277 | ||
28d8909b JHS |
278 | enum xfrm_sadattr_type_t { |
279 | XFRMA_SAD_UNSPEC, | |
af11e316 JHS |
280 | XFRMA_SAD_CNT, |
281 | XFRMA_SAD_HINFO, | |
28d8909b JHS |
282 | __XFRMA_SAD_MAX |
283 | ||
284 | #define XFRMA_SAD_MAX (__XFRMA_SAD_MAX - 1) | |
285 | }; | |
286 | ||
af11e316 JHS |
287 | struct xfrmu_sadhinfo { |
288 | __u32 sadhcnt; /* current hash bkts */ | |
289 | __u32 sadhmcnt; /* max allowed hash bkts */ | |
290 | }; | |
291 | ||
ecfd6b18 JHS |
292 | enum xfrm_spdattr_type_t { |
293 | XFRMA_SPD_UNSPEC, | |
5a6d3416 JHS |
294 | XFRMA_SPD_INFO, |
295 | XFRMA_SPD_HINFO, | |
ecfd6b18 JHS |
296 | __XFRMA_SPD_MAX |
297 | ||
298 | #define XFRMA_SPD_MAX (__XFRMA_SPD_MAX - 1) | |
299 | }; | |
300 | ||
5a6d3416 JHS |
301 | struct xfrmu_spdinfo { |
302 | __u32 incnt; | |
303 | __u32 outcnt; | |
304 | __u32 fwdcnt; | |
305 | __u32 inscnt; | |
306 | __u32 outscnt; | |
307 | __u32 fwdscnt; | |
308 | }; | |
309 | ||
310 | struct xfrmu_spdhinfo { | |
311 | __u32 spdhcnt; | |
312 | __u32 spdhmcnt; | |
313 | }; | |
314 | ||
1da177e4 LT |
315 | struct xfrm_usersa_info { |
316 | struct xfrm_selector sel; | |
317 | struct xfrm_id id; | |
318 | xfrm_address_t saddr; | |
319 | struct xfrm_lifetime_cfg lft; | |
320 | struct xfrm_lifetime_cur curlft; | |
321 | struct xfrm_stats stats; | |
322 | __u32 seq; | |
323 | __u32 reqid; | |
324 | __u16 family; | |
7e49e6de | 325 | __u8 mode; /* XFRM_MODE_xxx */ |
1da177e4 LT |
326 | __u8 replay_window; |
327 | __u8 flags; | |
328 | #define XFRM_STATE_NOECN 1 | |
329 | #define XFRM_STATE_DECAP_DSCP 2 | |
dd87147e | 330 | #define XFRM_STATE_NOPMTUDISC 4 |
fbd9a5b4 | 331 | #define XFRM_STATE_WILDRECV 8 |
8b7817f3 | 332 | #define XFRM_STATE_ICMP 16 |
1da177e4 LT |
333 | }; |
334 | ||
335 | struct xfrm_usersa_id { | |
336 | xfrm_address_t daddr; | |
9916ecb0 | 337 | __be32 spi; |
1da177e4 LT |
338 | __u16 family; |
339 | __u8 proto; | |
340 | }; | |
341 | ||
f8cd5488 | 342 | struct xfrm_aevent_id { |
f8cd5488 | 343 | struct xfrm_usersa_id sa_id; |
2b5f6dcc | 344 | xfrm_address_t saddr; |
4bf07ef3 | 345 | __u32 flags; |
2b5f6dcc | 346 | __u32 reqid; |
f8cd5488 JHS |
347 | }; |
348 | ||
1da177e4 LT |
349 | struct xfrm_userspi_info { |
350 | struct xfrm_usersa_info info; | |
351 | __u32 min; | |
352 | __u32 max; | |
353 | }; | |
354 | ||
355 | struct xfrm_userpolicy_info { | |
356 | struct xfrm_selector sel; | |
357 | struct xfrm_lifetime_cfg lft; | |
358 | struct xfrm_lifetime_cur curlft; | |
359 | __u32 priority; | |
360 | __u32 index; | |
361 | __u8 dir; | |
362 | __u8 action; | |
363 | #define XFRM_POLICY_ALLOW 0 | |
364 | #define XFRM_POLICY_BLOCK 1 | |
365 | __u8 flags; | |
366 | #define XFRM_POLICY_LOCALOK 1 /* Allow user to override global policy */ | |
8b7817f3 HX |
367 | /* Automatically expand selector to include matching ICMP payloads. */ |
368 | #define XFRM_POLICY_ICMP 2 | |
1da177e4 LT |
369 | __u8 share; |
370 | }; | |
371 | ||
372 | struct xfrm_userpolicy_id { | |
373 | struct xfrm_selector sel; | |
374 | __u32 index; | |
375 | __u8 dir; | |
376 | }; | |
377 | ||
378 | struct xfrm_user_acquire { | |
379 | struct xfrm_id id; | |
380 | xfrm_address_t saddr; | |
381 | struct xfrm_selector sel; | |
382 | struct xfrm_userpolicy_info policy; | |
383 | __u32 aalgos; | |
384 | __u32 ealgos; | |
385 | __u32 calgos; | |
386 | __u32 seq; | |
387 | }; | |
388 | ||
389 | struct xfrm_user_expire { | |
390 | struct xfrm_usersa_info state; | |
391 | __u8 hard; | |
392 | }; | |
393 | ||
394 | struct xfrm_user_polexpire { | |
395 | struct xfrm_userpolicy_info pol; | |
396 | __u8 hard; | |
397 | }; | |
398 | ||
399 | struct xfrm_usersa_flush { | |
400 | __u8 proto; | |
401 | }; | |
402 | ||
97a64b45 MN |
403 | struct xfrm_user_report { |
404 | __u8 proto; | |
405 | struct xfrm_selector sel; | |
406 | }; | |
407 | ||
80c9abaa SS |
408 | struct xfrm_user_migrate { |
409 | xfrm_address_t old_daddr; | |
410 | xfrm_address_t old_saddr; | |
411 | xfrm_address_t new_daddr; | |
412 | xfrm_address_t new_saddr; | |
413 | __u8 proto; | |
414 | __u8 mode; | |
415 | __u16 reserved; | |
416 | __u32 reqid; | |
417 | __u16 old_family; | |
418 | __u16 new_family; | |
419 | }; | |
420 | ||
ac6d439d PM |
421 | #ifndef __KERNEL__ |
422 | /* backwards compatibility for userspace */ | |
1da177e4 LT |
423 | #define XFRMGRP_ACQUIRE 1 |
424 | #define XFRMGRP_EXPIRE 2 | |
26b15dad JHS |
425 | #define XFRMGRP_SA 4 |
426 | #define XFRMGRP_POLICY 8 | |
93366c53 | 427 | #define XFRMGRP_REPORT 0x20 |
ac6d439d PM |
428 | #endif |
429 | ||
430 | enum xfrm_nlgroups { | |
431 | XFRMNLGRP_NONE, | |
432 | #define XFRMNLGRP_NONE XFRMNLGRP_NONE | |
433 | XFRMNLGRP_ACQUIRE, | |
434 | #define XFRMNLGRP_ACQUIRE XFRMNLGRP_ACQUIRE | |
435 | XFRMNLGRP_EXPIRE, | |
436 | #define XFRMNLGRP_EXPIRE XFRMNLGRP_EXPIRE | |
437 | XFRMNLGRP_SA, | |
438 | #define XFRMNLGRP_SA XFRMNLGRP_SA | |
439 | XFRMNLGRP_POLICY, | |
440 | #define XFRMNLGRP_POLICY XFRMNLGRP_POLICY | |
f8cd5488 JHS |
441 | XFRMNLGRP_AEVENTS, |
442 | #define XFRMNLGRP_AEVENTS XFRMNLGRP_AEVENTS | |
97a64b45 MN |
443 | XFRMNLGRP_REPORT, |
444 | #define XFRMNLGRP_REPORT XFRMNLGRP_REPORT | |
80c9abaa SS |
445 | XFRMNLGRP_MIGRATE, |
446 | #define XFRMNLGRP_MIGRATE XFRMNLGRP_MIGRATE | |
ac6d439d PM |
447 | __XFRMNLGRP_MAX |
448 | }; | |
449 | #define XFRMNLGRP_MAX (__XFRMNLGRP_MAX - 1) | |
1da177e4 LT |
450 | |
451 | #endif /* _LINUX_XFRM_H */ |