testing: use a decent PSK
[strongswan.git] / src / include / linux / xfrm.h
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 __be32 a4;
15 __be32 a6[4];
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 */
22 struct xfrm_id {
23 xfrm_address_t daddr;
24 __be32 spi;
25 __u8 proto;
26 };
27
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
44 /* Selector, used as selector both on policy rules (SPD) and SAs. */
45
46 struct xfrm_selector {
47 xfrm_address_t daddr;
48 xfrm_address_t saddr;
49 __be16 dport;
50 __be16 dport_mask;
51 __be16 sport;
52 __be16 sport_mask;
53 __u16 family;
54 __u8 prefixlen_d;
55 __u8 prefixlen_s;
56 __u8 proto;
57 int ifindex;
58 __kernel_uid32_t user;
59 };
60
61 #define XFRM_INF (~(__u64)0)
62
63 struct xfrm_lifetime_cfg {
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
74 struct xfrm_lifetime_cur {
75 __u64 bytes;
76 __u64 packets;
77 __u64 add_time;
78 __u64 use_time;
79 };
80
81 struct xfrm_replay_state {
82 __u32 oseq;
83 __u32 seq;
84 __u32 bitmap;
85 };
86
87 struct xfrm_replay_state_esn {
88 unsigned int bmp_len;
89 __u32 oseq;
90 __u32 seq;
91 __u32 oseq_hi;
92 __u32 seq_hi;
93 __u32 replay_window;
94 __u32 bmp[0];
95 };
96
97 struct xfrm_algo {
98 char alg_name[64];
99 unsigned int alg_key_len; /* in bits */
100 char alg_key[0];
101 };
102
103 struct xfrm_algo_auth {
104 char alg_name[64];
105 unsigned int alg_key_len; /* in bits */
106 unsigned int alg_trunc_len; /* in bits */
107 char alg_key[0];
108 };
109
110 struct xfrm_algo_aead {
111 char alg_name[64];
112 unsigned int alg_key_len; /* in bits */
113 unsigned int alg_icv_len; /* in bits */
114 char alg_key[0];
115 };
116
117 struct xfrm_stats {
118 __u32 replay_window;
119 __u32 replay;
120 __u32 integrity_failed;
121 };
122
123 enum {
124 XFRM_POLICY_TYPE_MAIN = 0,
125 XFRM_POLICY_TYPE_SUB = 1,
126 XFRM_POLICY_TYPE_MAX = 2,
127 XFRM_POLICY_TYPE_ANY = 255
128 };
129
130 enum {
131 XFRM_POLICY_IN = 0,
132 XFRM_POLICY_OUT = 1,
133 XFRM_POLICY_FWD = 2,
134 XFRM_POLICY_MASK = 3,
135 XFRM_POLICY_MAX = 3
136 };
137
138 enum {
139 XFRM_SHARE_ANY, /* No limitations */
140 XFRM_SHARE_SESSION, /* For this session only */
141 XFRM_SHARE_USER, /* For this user only */
142 XFRM_SHARE_UNIQUE /* Use once */
143 };
144
145 #define XFRM_MODE_TRANSPORT 0
146 #define XFRM_MODE_TUNNEL 1
147 #define XFRM_MODE_ROUTEOPTIMIZATION 2
148 #define XFRM_MODE_IN_TRIGGER 3
149 #define XFRM_MODE_BEET 4
150 #define XFRM_MODE_MAX 5
151
152 /* Netlink configuration messages. */
153 enum {
154 XFRM_MSG_BASE = 0x10,
155
156 XFRM_MSG_NEWSA = 0x10,
157 #define XFRM_MSG_NEWSA XFRM_MSG_NEWSA
158 XFRM_MSG_DELSA,
159 #define XFRM_MSG_DELSA XFRM_MSG_DELSA
160 XFRM_MSG_GETSA,
161 #define XFRM_MSG_GETSA XFRM_MSG_GETSA
162
163 XFRM_MSG_NEWPOLICY,
164 #define XFRM_MSG_NEWPOLICY XFRM_MSG_NEWPOLICY
165 XFRM_MSG_DELPOLICY,
166 #define XFRM_MSG_DELPOLICY XFRM_MSG_DELPOLICY
167 XFRM_MSG_GETPOLICY,
168 #define XFRM_MSG_GETPOLICY XFRM_MSG_GETPOLICY
169
170 XFRM_MSG_ALLOCSPI,
171 #define XFRM_MSG_ALLOCSPI XFRM_MSG_ALLOCSPI
172 XFRM_MSG_ACQUIRE,
173 #define XFRM_MSG_ACQUIRE XFRM_MSG_ACQUIRE
174 XFRM_MSG_EXPIRE,
175 #define XFRM_MSG_EXPIRE XFRM_MSG_EXPIRE
176
177 XFRM_MSG_UPDPOLICY,
178 #define XFRM_MSG_UPDPOLICY XFRM_MSG_UPDPOLICY
179 XFRM_MSG_UPDSA,
180 #define XFRM_MSG_UPDSA XFRM_MSG_UPDSA
181
182 XFRM_MSG_POLEXPIRE,
183 #define XFRM_MSG_POLEXPIRE XFRM_MSG_POLEXPIRE
184
185 XFRM_MSG_FLUSHSA,
186 #define XFRM_MSG_FLUSHSA XFRM_MSG_FLUSHSA
187 XFRM_MSG_FLUSHPOLICY,
188 #define XFRM_MSG_FLUSHPOLICY XFRM_MSG_FLUSHPOLICY
189
190 XFRM_MSG_NEWAE,
191 #define XFRM_MSG_NEWAE XFRM_MSG_NEWAE
192 XFRM_MSG_GETAE,
193 #define XFRM_MSG_GETAE XFRM_MSG_GETAE
194
195 XFRM_MSG_REPORT,
196 #define XFRM_MSG_REPORT XFRM_MSG_REPORT
197
198 XFRM_MSG_MIGRATE,
199 #define XFRM_MSG_MIGRATE XFRM_MSG_MIGRATE
200
201 XFRM_MSG_NEWSADINFO,
202 #define XFRM_MSG_NEWSADINFO XFRM_MSG_NEWSADINFO
203 XFRM_MSG_GETSADINFO,
204 #define XFRM_MSG_GETSADINFO XFRM_MSG_GETSADINFO
205
206 XFRM_MSG_NEWSPDINFO,
207 #define XFRM_MSG_NEWSPDINFO XFRM_MSG_NEWSPDINFO
208 XFRM_MSG_GETSPDINFO,
209 #define XFRM_MSG_GETSPDINFO XFRM_MSG_GETSPDINFO
210
211 XFRM_MSG_MAPPING,
212 #define XFRM_MSG_MAPPING XFRM_MSG_MAPPING
213 __XFRM_MSG_MAX
214 };
215 #define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1)
216
217 #define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE)
218
219 /*
220 * Generic LSM security context for comunicating to user space
221 * NOTE: Same format as sadb_x_sec_ctx
222 */
223 struct xfrm_user_sec_ctx {
224 __u16 len;
225 __u16 exttype;
226 __u8 ctx_alg; /* LSMs: e.g., selinux == 1 */
227 __u8 ctx_doi;
228 __u16 ctx_len;
229 };
230
231 struct xfrm_user_tmpl {
232 struct xfrm_id id;
233 __u16 family;
234 xfrm_address_t saddr;
235 __u32 reqid;
236 __u8 mode;
237 __u8 share;
238 __u8 optional;
239 __u32 aalgos;
240 __u32 ealgos;
241 __u32 calgos;
242 };
243
244 struct xfrm_encap_tmpl {
245 __u16 encap_type;
246 __be16 encap_sport;
247 __be16 encap_dport;
248 xfrm_address_t encap_oa;
249 };
250
251 /* AEVENT flags */
252 enum xfrm_ae_ftype_t {
253 XFRM_AE_UNSPEC,
254 XFRM_AE_RTHR=1, /* replay threshold*/
255 XFRM_AE_RVAL=2, /* replay value */
256 XFRM_AE_LVAL=4, /* lifetime value */
257 XFRM_AE_ETHR=8, /* expiry timer threshold */
258 XFRM_AE_CR=16, /* Event cause is replay update */
259 XFRM_AE_CE=32, /* Event cause is timer expiry */
260 XFRM_AE_CU=64, /* Event cause is policy update */
261 __XFRM_AE_MAX
262
263 #define XFRM_AE_MAX (__XFRM_AE_MAX - 1)
264 };
265
266 struct xfrm_userpolicy_type {
267 __u8 type;
268 __u16 reserved1;
269 __u8 reserved2;
270 };
271
272 /* Netlink message attributes. */
273 enum xfrm_attr_type_t {
274 XFRMA_UNSPEC,
275 XFRMA_ALG_AUTH, /* struct xfrm_algo */
276 XFRMA_ALG_CRYPT, /* struct xfrm_algo */
277 XFRMA_ALG_COMP, /* struct xfrm_algo */
278 XFRMA_ENCAP, /* struct xfrm_algo + struct xfrm_encap_tmpl */
279 XFRMA_TMPL, /* 1 or more struct xfrm_user_tmpl */
280 XFRMA_SA, /* struct xfrm_usersa_info */
281 XFRMA_POLICY, /*struct xfrm_userpolicy_info */
282 XFRMA_SEC_CTX, /* struct xfrm_sec_ctx */
283 XFRMA_LTIME_VAL,
284 XFRMA_REPLAY_VAL,
285 XFRMA_REPLAY_THRESH,
286 XFRMA_ETIMER_THRESH,
287 XFRMA_SRCADDR, /* xfrm_address_t */
288 XFRMA_COADDR, /* xfrm_address_t */
289 XFRMA_LASTUSED, /* unsigned long */
290 XFRMA_POLICY_TYPE, /* struct xfrm_userpolicy_type */
291 XFRMA_MIGRATE,
292 XFRMA_ALG_AEAD, /* struct xfrm_algo_aead */
293 XFRMA_KMADDRESS, /* struct xfrm_user_kmaddress */
294 XFRMA_ALG_AUTH_TRUNC, /* struct xfrm_algo_auth */
295 XFRMA_MARK, /* struct xfrm_mark */
296 XFRMA_TFCPAD, /* __u32 */
297 XFRMA_REPLAY_ESN_VAL, /* struct xfrm_replay_esn */
298 __XFRMA_MAX
299
300 #define XFRMA_MAX (__XFRMA_MAX - 1)
301 };
302
303 struct xfrm_mark {
304 __u32 v; /* value */
305 __u32 m; /* mask */
306 };
307
308 enum xfrm_sadattr_type_t {
309 XFRMA_SAD_UNSPEC,
310 XFRMA_SAD_CNT,
311 XFRMA_SAD_HINFO,
312 __XFRMA_SAD_MAX
313
314 #define XFRMA_SAD_MAX (__XFRMA_SAD_MAX - 1)
315 };
316
317 struct xfrmu_sadhinfo {
318 __u32 sadhcnt; /* current hash bkts */
319 __u32 sadhmcnt; /* max allowed hash bkts */
320 };
321
322 enum xfrm_spdattr_type_t {
323 XFRMA_SPD_UNSPEC,
324 XFRMA_SPD_INFO,
325 XFRMA_SPD_HINFO,
326 __XFRMA_SPD_MAX
327
328 #define XFRMA_SPD_MAX (__XFRMA_SPD_MAX - 1)
329 };
330
331 struct xfrmu_spdinfo {
332 __u32 incnt;
333 __u32 outcnt;
334 __u32 fwdcnt;
335 __u32 inscnt;
336 __u32 outscnt;
337 __u32 fwdscnt;
338 };
339
340 struct xfrmu_spdhinfo {
341 __u32 spdhcnt;
342 __u32 spdhmcnt;
343 };
344
345 struct xfrm_usersa_info {
346 struct xfrm_selector sel;
347 struct xfrm_id id;
348 xfrm_address_t saddr;
349 struct xfrm_lifetime_cfg lft;
350 struct xfrm_lifetime_cur curlft;
351 struct xfrm_stats stats;
352 __u32 seq;
353 __u32 reqid;
354 __u16 family;
355 __u8 mode; /* XFRM_MODE_xxx */
356 __u8 replay_window;
357 __u8 flags;
358 #define XFRM_STATE_NOECN 1
359 #define XFRM_STATE_DECAP_DSCP 2
360 #define XFRM_STATE_NOPMTUDISC 4
361 #define XFRM_STATE_WILDRECV 8
362 #define XFRM_STATE_ICMP 16
363 #define XFRM_STATE_AF_UNSPEC 32
364 #define XFRM_STATE_ALIGN4 64
365 #define XFRM_STATE_ESN 128
366 };
367
368 struct xfrm_usersa_id {
369 xfrm_address_t daddr;
370 __be32 spi;
371 __u16 family;
372 __u8 proto;
373 };
374
375 struct xfrm_aevent_id {
376 struct xfrm_usersa_id sa_id;
377 xfrm_address_t saddr;
378 __u32 flags;
379 __u32 reqid;
380 };
381
382 struct xfrm_userspi_info {
383 struct xfrm_usersa_info info;
384 __u32 min;
385 __u32 max;
386 };
387
388 struct xfrm_userpolicy_info {
389 struct xfrm_selector sel;
390 struct xfrm_lifetime_cfg lft;
391 struct xfrm_lifetime_cur curlft;
392 __u32 priority;
393 __u32 index;
394 __u8 dir;
395 __u8 action;
396 #define XFRM_POLICY_ALLOW 0
397 #define XFRM_POLICY_BLOCK 1
398 __u8 flags;
399 #define XFRM_POLICY_LOCALOK 1 /* Allow user to override global policy */
400 /* Automatically expand selector to include matching ICMP payloads. */
401 #define XFRM_POLICY_ICMP 2
402 __u8 share;
403 };
404
405 struct xfrm_userpolicy_id {
406 struct xfrm_selector sel;
407 __u32 index;
408 __u8 dir;
409 };
410
411 struct xfrm_user_acquire {
412 struct xfrm_id id;
413 xfrm_address_t saddr;
414 struct xfrm_selector sel;
415 struct xfrm_userpolicy_info policy;
416 __u32 aalgos;
417 __u32 ealgos;
418 __u32 calgos;
419 __u32 seq;
420 };
421
422 struct xfrm_user_expire {
423 struct xfrm_usersa_info state;
424 __u8 hard;
425 };
426
427 struct xfrm_user_polexpire {
428 struct xfrm_userpolicy_info pol;
429 __u8 hard;
430 };
431
432 struct xfrm_usersa_flush {
433 __u8 proto;
434 };
435
436 struct xfrm_user_report {
437 __u8 proto;
438 struct xfrm_selector sel;
439 };
440
441 /* Used by MIGRATE to pass addresses IKE should use to perform
442 * SA negotiation with the peer */
443 struct xfrm_user_kmaddress {
444 xfrm_address_t local;
445 xfrm_address_t remote;
446 __u32 reserved;
447 __u16 family;
448 };
449
450 struct xfrm_user_migrate {
451 xfrm_address_t old_daddr;
452 xfrm_address_t old_saddr;
453 xfrm_address_t new_daddr;
454 xfrm_address_t new_saddr;
455 __u8 proto;
456 __u8 mode;
457 __u16 reserved;
458 __u32 reqid;
459 __u16 old_family;
460 __u16 new_family;
461 };
462
463 struct xfrm_user_mapping {
464 struct xfrm_usersa_id id;
465 __u32 reqid;
466 xfrm_address_t old_saddr;
467 xfrm_address_t new_saddr;
468 __be16 old_sport;
469 __be16 new_sport;
470 };
471
472 #ifndef __KERNEL__
473 /* backwards compatibility for userspace */
474 #define XFRMGRP_ACQUIRE 1
475 #define XFRMGRP_EXPIRE 2
476 #define XFRMGRP_SA 4
477 #define XFRMGRP_POLICY 8
478 #define XFRMGRP_REPORT 0x20
479 #endif
480
481 enum xfrm_nlgroups {
482 XFRMNLGRP_NONE,
483 #define XFRMNLGRP_NONE XFRMNLGRP_NONE
484 XFRMNLGRP_ACQUIRE,
485 #define XFRMNLGRP_ACQUIRE XFRMNLGRP_ACQUIRE
486 XFRMNLGRP_EXPIRE,
487 #define XFRMNLGRP_EXPIRE XFRMNLGRP_EXPIRE
488 XFRMNLGRP_SA,
489 #define XFRMNLGRP_SA XFRMNLGRP_SA
490 XFRMNLGRP_POLICY,
491 #define XFRMNLGRP_POLICY XFRMNLGRP_POLICY
492 XFRMNLGRP_AEVENTS,
493 #define XFRMNLGRP_AEVENTS XFRMNLGRP_AEVENTS
494 XFRMNLGRP_REPORT,
495 #define XFRMNLGRP_REPORT XFRMNLGRP_REPORT
496 XFRMNLGRP_MIGRATE,
497 #define XFRMNLGRP_MIGRATE XFRMNLGRP_MIGRATE
498 XFRMNLGRP_MAPPING,
499 #define XFRMNLGRP_MAPPING XFRMNLGRP_MAPPING
500 __XFRMNLGRP_MAX
501 };
502 #define XFRMNLGRP_MAX (__XFRMNLGRP_MAX - 1)
503
504 #endif /* _LINUX_XFRM_H */