updated xfrm.h to the version from the 2.6.25.4 kernel sources
[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 {
15 __be32 a4;
16 __be32 a6[4];
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;
26 __be32 spi;
27 __u8 proto;
28 };
29
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
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;
52 __be16 dport;
53 __be16 dport_mask;
54 __be16 sport;
55 __be16 sport_mask;
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 unsigned int alg_key_len; /* in bits */
96 char alg_key[0];
97 };
98
99 struct xfrm_algo_aead {
100 char alg_name[64];
101 int alg_key_len; /* in bits */
102 int alg_icv_len; /* in bits */
103 char alg_key[0];
104 };
105
106 struct xfrm_stats {
107 __u32 replay_window;
108 __u32 replay;
109 __u32 integrity_failed;
110 };
111
112 enum
113 {
114 XFRM_POLICY_TYPE_MAIN = 0,
115 XFRM_POLICY_TYPE_SUB = 1,
116 XFRM_POLICY_TYPE_MAX = 2
117 };
118
119 enum
120 {
121 XFRM_POLICY_IN = 0,
122 XFRM_POLICY_OUT = 1,
123 XFRM_POLICY_FWD = 2,
124 XFRM_POLICY_MASK = 3,
125 XFRM_POLICY_MAX = 3
126 };
127
128 enum
129 {
130 XFRM_SHARE_ANY, /* No limitations */
131 XFRM_SHARE_SESSION, /* For this session only */
132 XFRM_SHARE_USER, /* For this user only */
133 XFRM_SHARE_UNIQUE /* Use once */
134 };
135
136 #define XFRM_MODE_TRANSPORT 0
137 #define XFRM_MODE_TUNNEL 1
138 #define XFRM_MODE_ROUTEOPTIMIZATION 2
139 #define XFRM_MODE_IN_TRIGGER 3
140 #define XFRM_MODE_BEET 4
141 #define XFRM_MODE_MAX 5
142
143 /* Netlink configuration messages. */
144 enum {
145 XFRM_MSG_BASE = 0x10,
146
147 XFRM_MSG_NEWSA = 0x10,
148 #define XFRM_MSG_NEWSA XFRM_MSG_NEWSA
149 XFRM_MSG_DELSA,
150 #define XFRM_MSG_DELSA XFRM_MSG_DELSA
151 XFRM_MSG_GETSA,
152 #define XFRM_MSG_GETSA XFRM_MSG_GETSA
153
154 XFRM_MSG_NEWPOLICY,
155 #define XFRM_MSG_NEWPOLICY XFRM_MSG_NEWPOLICY
156 XFRM_MSG_DELPOLICY,
157 #define XFRM_MSG_DELPOLICY XFRM_MSG_DELPOLICY
158 XFRM_MSG_GETPOLICY,
159 #define XFRM_MSG_GETPOLICY XFRM_MSG_GETPOLICY
160
161 XFRM_MSG_ALLOCSPI,
162 #define XFRM_MSG_ALLOCSPI XFRM_MSG_ALLOCSPI
163 XFRM_MSG_ACQUIRE,
164 #define XFRM_MSG_ACQUIRE XFRM_MSG_ACQUIRE
165 XFRM_MSG_EXPIRE,
166 #define XFRM_MSG_EXPIRE XFRM_MSG_EXPIRE
167
168 XFRM_MSG_UPDPOLICY,
169 #define XFRM_MSG_UPDPOLICY XFRM_MSG_UPDPOLICY
170 XFRM_MSG_UPDSA,
171 #define XFRM_MSG_UPDSA XFRM_MSG_UPDSA
172
173 XFRM_MSG_POLEXPIRE,
174 #define XFRM_MSG_POLEXPIRE XFRM_MSG_POLEXPIRE
175
176 XFRM_MSG_FLUSHSA,
177 #define XFRM_MSG_FLUSHSA XFRM_MSG_FLUSHSA
178 XFRM_MSG_FLUSHPOLICY,
179 #define XFRM_MSG_FLUSHPOLICY XFRM_MSG_FLUSHPOLICY
180
181 XFRM_MSG_NEWAE,
182 #define XFRM_MSG_NEWAE XFRM_MSG_NEWAE
183 XFRM_MSG_GETAE,
184 #define XFRM_MSG_GETAE XFRM_MSG_GETAE
185
186 XFRM_MSG_REPORT,
187 #define XFRM_MSG_REPORT XFRM_MSG_REPORT
188
189 XFRM_MSG_MIGRATE,
190 #define XFRM_MSG_MIGRATE XFRM_MSG_MIGRATE
191
192 XFRM_MSG_NEWSADINFO,
193 #define XFRM_MSG_NEWSADINFO XFRM_MSG_NEWSADINFO
194 XFRM_MSG_GETSADINFO,
195 #define XFRM_MSG_GETSADINFO XFRM_MSG_GETSADINFO
196
197 XFRM_MSG_NEWSPDINFO,
198 #define XFRM_MSG_NEWSPDINFO XFRM_MSG_NEWSPDINFO
199 XFRM_MSG_GETSPDINFO,
200 #define XFRM_MSG_GETSPDINFO XFRM_MSG_GETSPDINFO
201 __XFRM_MSG_MAX
202 };
203 #define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1)
204
205 #define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE)
206
207 /*
208 * Generic LSM security context for comunicating to user space
209 * NOTE: Same format as sadb_x_sec_ctx
210 */
211 struct xfrm_user_sec_ctx {
212 __u16 len;
213 __u16 exttype;
214 __u8 ctx_alg; /* LSMs: e.g., selinux == 1 */
215 __u8 ctx_doi;
216 __u16 ctx_len;
217 };
218
219 struct xfrm_user_tmpl {
220 struct xfrm_id id;
221 __u16 family;
222 xfrm_address_t saddr;
223 __u32 reqid;
224 __u8 mode;
225 __u8 share;
226 __u8 optional;
227 __u32 aalgos;
228 __u32 ealgos;
229 __u32 calgos;
230 };
231
232 struct xfrm_encap_tmpl {
233 __u16 encap_type;
234 __be16 encap_sport;
235 __be16 encap_dport;
236 xfrm_address_t encap_oa;
237 };
238
239 /* AEVENT flags */
240 enum xfrm_ae_ftype_t {
241 XFRM_AE_UNSPEC,
242 XFRM_AE_RTHR=1, /* replay threshold*/
243 XFRM_AE_RVAL=2, /* replay value */
244 XFRM_AE_LVAL=4, /* lifetime value */
245 XFRM_AE_ETHR=8, /* expiry timer threshold */
246 XFRM_AE_CR=16, /* Event cause is replay update */
247 XFRM_AE_CE=32, /* Event cause is timer expiry */
248 XFRM_AE_CU=64, /* Event cause is policy update */
249 __XFRM_AE_MAX
250
251 #define XFRM_AE_MAX (__XFRM_AE_MAX - 1)
252 };
253
254 struct xfrm_userpolicy_type {
255 __u8 type;
256 __u16 reserved1;
257 __u8 reserved2;
258 };
259
260 /* Netlink message attributes. */
261 enum xfrm_attr_type_t {
262 XFRMA_UNSPEC,
263 XFRMA_ALG_AUTH, /* struct xfrm_algo */
264 XFRMA_ALG_CRYPT, /* struct xfrm_algo */
265 XFRMA_ALG_COMP, /* struct xfrm_algo */
266 XFRMA_ENCAP, /* struct xfrm_algo + struct xfrm_encap_tmpl */
267 XFRMA_TMPL, /* 1 or more struct xfrm_user_tmpl */
268 XFRMA_SA,
269 XFRMA_POLICY,
270 XFRMA_SEC_CTX, /* struct xfrm_sec_ctx */
271 XFRMA_LTIME_VAL,
272 XFRMA_REPLAY_VAL,
273 XFRMA_REPLAY_THRESH,
274 XFRMA_ETIMER_THRESH,
275 XFRMA_SRCADDR, /* xfrm_address_t */
276 XFRMA_COADDR, /* xfrm_address_t */
277 XFRMA_LASTUSED,
278 XFRMA_POLICY_TYPE, /* struct xfrm_userpolicy_type */
279 XFRMA_MIGRATE,
280 XFRMA_ALG_AEAD, /* struct xfrm_algo_aead */
281 __XFRMA_MAX
282
283 #define XFRMA_MAX (__XFRMA_MAX - 1)
284 };
285
286 enum xfrm_sadattr_type_t {
287 XFRMA_SAD_UNSPEC,
288 XFRMA_SAD_CNT,
289 XFRMA_SAD_HINFO,
290 __XFRMA_SAD_MAX
291
292 #define XFRMA_SAD_MAX (__XFRMA_SAD_MAX - 1)
293 };
294
295 struct xfrmu_sadhinfo {
296 __u32 sadhcnt; /* current hash bkts */
297 __u32 sadhmcnt; /* max allowed hash bkts */
298 };
299
300 enum xfrm_spdattr_type_t {
301 XFRMA_SPD_UNSPEC,
302 XFRMA_SPD_INFO,
303 XFRMA_SPD_HINFO,
304 __XFRMA_SPD_MAX
305
306 #define XFRMA_SPD_MAX (__XFRMA_SPD_MAX - 1)
307 };
308
309 struct xfrmu_spdinfo {
310 __u32 incnt;
311 __u32 outcnt;
312 __u32 fwdcnt;
313 __u32 inscnt;
314 __u32 outscnt;
315 __u32 fwdscnt;
316 };
317
318 struct xfrmu_spdhinfo {
319 __u32 spdhcnt;
320 __u32 spdhmcnt;
321 };
322
323 struct xfrm_usersa_info {
324 struct xfrm_selector sel;
325 struct xfrm_id id;
326 xfrm_address_t saddr;
327 struct xfrm_lifetime_cfg lft;
328 struct xfrm_lifetime_cur curlft;
329 struct xfrm_stats stats;
330 __u32 seq;
331 __u32 reqid;
332 __u16 family;
333 __u8 mode; /* XFRM_MODE_xxx */
334 __u8 replay_window;
335 __u8 flags;
336 #define XFRM_STATE_NOECN 1
337 #define XFRM_STATE_DECAP_DSCP 2
338 #define XFRM_STATE_NOPMTUDISC 4
339 #define XFRM_STATE_WILDRECV 8
340 #define XFRM_STATE_ICMP 16
341 };
342
343 struct xfrm_usersa_id {
344 xfrm_address_t daddr;
345 __be32 spi;
346 __u16 family;
347 __u8 proto;
348 };
349
350 struct xfrm_aevent_id {
351 struct xfrm_usersa_id sa_id;
352 xfrm_address_t saddr;
353 __u32 flags;
354 __u32 reqid;
355 };
356
357 struct xfrm_userspi_info {
358 struct xfrm_usersa_info info;
359 __u32 min;
360 __u32 max;
361 };
362
363 struct xfrm_userpolicy_info {
364 struct xfrm_selector sel;
365 struct xfrm_lifetime_cfg lft;
366 struct xfrm_lifetime_cur curlft;
367 __u32 priority;
368 __u32 index;
369 __u8 dir;
370 __u8 action;
371 #define XFRM_POLICY_ALLOW 0
372 #define XFRM_POLICY_BLOCK 1
373 __u8 flags;
374 #define XFRM_POLICY_LOCALOK 1 /* Allow user to override global policy */
375 /* Automatically expand selector to include matching ICMP payloads. */
376 #define XFRM_POLICY_ICMP 2
377 __u8 share;
378 };
379
380 struct xfrm_userpolicy_id {
381 struct xfrm_selector sel;
382 __u32 index;
383 __u8 dir;
384 };
385
386 struct xfrm_user_acquire {
387 struct xfrm_id id;
388 xfrm_address_t saddr;
389 struct xfrm_selector sel;
390 struct xfrm_userpolicy_info policy;
391 __u32 aalgos;
392 __u32 ealgos;
393 __u32 calgos;
394 __u32 seq;
395 };
396
397 struct xfrm_user_expire {
398 struct xfrm_usersa_info state;
399 __u8 hard;
400 };
401
402 struct xfrm_user_polexpire {
403 struct xfrm_userpolicy_info pol;
404 __u8 hard;
405 };
406
407 struct xfrm_usersa_flush {
408 __u8 proto;
409 };
410
411 struct xfrm_user_report {
412 __u8 proto;
413 struct xfrm_selector sel;
414 };
415
416 struct xfrm_user_migrate {
417 xfrm_address_t old_daddr;
418 xfrm_address_t old_saddr;
419 xfrm_address_t new_daddr;
420 xfrm_address_t new_saddr;
421 __u8 proto;
422 __u8 mode;
423 __u16 reserved;
424 __u32 reqid;
425 __u16 old_family;
426 __u16 new_family;
427 };
428
429 #ifndef __KERNEL__
430 /* backwards compatibility for userspace */
431 #define XFRMGRP_ACQUIRE 1
432 #define XFRMGRP_EXPIRE 2
433 #define XFRMGRP_SA 4
434 #define XFRMGRP_POLICY 8
435 #define XFRMGRP_REPORT 0x20
436 #endif
437
438 enum xfrm_nlgroups {
439 XFRMNLGRP_NONE,
440 #define XFRMNLGRP_NONE XFRMNLGRP_NONE
441 XFRMNLGRP_ACQUIRE,
442 #define XFRMNLGRP_ACQUIRE XFRMNLGRP_ACQUIRE
443 XFRMNLGRP_EXPIRE,
444 #define XFRMNLGRP_EXPIRE XFRMNLGRP_EXPIRE
445 XFRMNLGRP_SA,
446 #define XFRMNLGRP_SA XFRMNLGRP_SA
447 XFRMNLGRP_POLICY,
448 #define XFRMNLGRP_POLICY XFRMNLGRP_POLICY
449 XFRMNLGRP_AEVENTS,
450 #define XFRMNLGRP_AEVENTS XFRMNLGRP_AEVENTS
451 XFRMNLGRP_REPORT,
452 #define XFRMNLGRP_REPORT XFRMNLGRP_REPORT
453 XFRMNLGRP_MIGRATE,
454 #define XFRMNLGRP_MIGRATE XFRMNLGRP_MIGRATE
455 __XFRMNLGRP_MAX
456 };
457 #define XFRMNLGRP_MAX (__XFRMNLGRP_MAX - 1)
458
459 #endif /* _LINUX_XFRM_H */