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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 | |
132 | #define XFRM_MODE_MAX 4 | |
b59f45d0 | 133 | |
1da177e4 LT |
134 | /* Netlink configuration messages. */ |
135 | enum { | |
136 | XFRM_MSG_BASE = 0x10, | |
137 | ||
138 | XFRM_MSG_NEWSA = 0x10, | |
139 | #define XFRM_MSG_NEWSA XFRM_MSG_NEWSA | |
140 | XFRM_MSG_DELSA, | |
141 | #define XFRM_MSG_DELSA XFRM_MSG_DELSA | |
142 | XFRM_MSG_GETSA, | |
143 | #define XFRM_MSG_GETSA XFRM_MSG_GETSA | |
144 | ||
145 | XFRM_MSG_NEWPOLICY, | |
146 | #define XFRM_MSG_NEWPOLICY XFRM_MSG_NEWPOLICY | |
147 | XFRM_MSG_DELPOLICY, | |
148 | #define XFRM_MSG_DELPOLICY XFRM_MSG_DELPOLICY | |
149 | XFRM_MSG_GETPOLICY, | |
150 | #define XFRM_MSG_GETPOLICY XFRM_MSG_GETPOLICY | |
151 | ||
152 | XFRM_MSG_ALLOCSPI, | |
153 | #define XFRM_MSG_ALLOCSPI XFRM_MSG_ALLOCSPI | |
154 | XFRM_MSG_ACQUIRE, | |
155 | #define XFRM_MSG_ACQUIRE XFRM_MSG_ACQUIRE | |
156 | XFRM_MSG_EXPIRE, | |
157 | #define XFRM_MSG_EXPIRE XFRM_MSG_EXPIRE | |
158 | ||
159 | XFRM_MSG_UPDPOLICY, | |
160 | #define XFRM_MSG_UPDPOLICY XFRM_MSG_UPDPOLICY | |
161 | XFRM_MSG_UPDSA, | |
162 | #define XFRM_MSG_UPDSA XFRM_MSG_UPDSA | |
163 | ||
164 | XFRM_MSG_POLEXPIRE, | |
165 | #define XFRM_MSG_POLEXPIRE XFRM_MSG_POLEXPIRE | |
166 | ||
167 | XFRM_MSG_FLUSHSA, | |
168 | #define XFRM_MSG_FLUSHSA XFRM_MSG_FLUSHSA | |
169 | XFRM_MSG_FLUSHPOLICY, | |
170 | #define XFRM_MSG_FLUSHPOLICY XFRM_MSG_FLUSHPOLICY | |
171 | ||
f8cd5488 JHS |
172 | XFRM_MSG_NEWAE, |
173 | #define XFRM_MSG_NEWAE XFRM_MSG_NEWAE | |
174 | XFRM_MSG_GETAE, | |
175 | #define XFRM_MSG_GETAE XFRM_MSG_GETAE | |
97a64b45 MN |
176 | |
177 | XFRM_MSG_REPORT, | |
178 | #define XFRM_MSG_REPORT XFRM_MSG_REPORT | |
179 | ||
526bdb80 | 180 | __XFRM_MSG_MAX |
1da177e4 | 181 | }; |
526bdb80 | 182 | #define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1) |
1da177e4 | 183 | |
492b558b TG |
184 | #define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE) |
185 | ||
df71837d TJ |
186 | /* |
187 | * Generic LSM security context for comunicating to user space | |
188 | * NOTE: Same format as sadb_x_sec_ctx | |
189 | */ | |
190 | struct xfrm_user_sec_ctx { | |
191 | __u16 len; | |
192 | __u16 exttype; | |
193 | __u8 ctx_alg; /* LSMs: e.g., selinux == 1 */ | |
194 | __u8 ctx_doi; | |
195 | __u16 ctx_len; | |
196 | }; | |
197 | ||
1da177e4 LT |
198 | struct xfrm_user_tmpl { |
199 | struct xfrm_id id; | |
200 | __u16 family; | |
201 | xfrm_address_t saddr; | |
202 | __u32 reqid; | |
203 | __u8 mode; | |
204 | __u8 share; | |
205 | __u8 optional; | |
206 | __u32 aalgos; | |
207 | __u32 ealgos; | |
208 | __u32 calgos; | |
209 | }; | |
210 | ||
211 | struct xfrm_encap_tmpl { | |
212 | __u16 encap_type; | |
213 | __u16 encap_sport; | |
214 | __u16 encap_dport; | |
215 | xfrm_address_t encap_oa; | |
216 | }; | |
217 | ||
f8cd5488 JHS |
218 | /* AEVENT flags */ |
219 | enum xfrm_ae_ftype_t { | |
220 | XFRM_AE_UNSPEC, | |
221 | XFRM_AE_RTHR=1, /* replay threshold*/ | |
222 | XFRM_AE_RVAL=2, /* replay value */ | |
223 | XFRM_AE_LVAL=4, /* lifetime value */ | |
224 | XFRM_AE_ETHR=8, /* expiry timer threshold */ | |
225 | XFRM_AE_CR=16, /* Event cause is replay update */ | |
226 | XFRM_AE_CE=32, /* Event cause is timer expiry */ | |
227 | XFRM_AE_CU=64, /* Event cause is policy update */ | |
228 | __XFRM_AE_MAX | |
229 | ||
230 | #define XFRM_AE_MAX (__XFRM_AE_MAX - 1) | |
231 | }; | |
232 | ||
f7b6983f MN |
233 | struct xfrm_userpolicy_type { |
234 | __u8 type; | |
235 | __u16 reserved1; | |
236 | __u8 reserved2; | |
237 | }; | |
238 | ||
1da177e4 LT |
239 | /* Netlink message attributes. */ |
240 | enum xfrm_attr_type_t { | |
241 | XFRMA_UNSPEC, | |
242 | XFRMA_ALG_AUTH, /* struct xfrm_algo */ | |
243 | XFRMA_ALG_CRYPT, /* struct xfrm_algo */ | |
244 | XFRMA_ALG_COMP, /* struct xfrm_algo */ | |
245 | XFRMA_ENCAP, /* struct xfrm_algo + struct xfrm_encap_tmpl */ | |
246 | XFRMA_TMPL, /* 1 or more struct xfrm_user_tmpl */ | |
0603eac0 HX |
247 | XFRMA_SA, |
248 | XFRMA_POLICY, | |
df71837d | 249 | XFRMA_SEC_CTX, /* struct xfrm_sec_ctx */ |
f8cd5488 JHS |
250 | XFRMA_LTIME_VAL, |
251 | XFRMA_REPLAY_VAL, | |
252 | XFRMA_REPLAY_THRESH, | |
253 | XFRMA_ETIMER_THRESH, | |
eb2971b6 | 254 | XFRMA_SRCADDR, /* xfrm_address_t */ |
060f02a3 | 255 | XFRMA_COADDR, /* xfrm_address_t */ |
9afaca05 | 256 | XFRMA_LASTUSED, |
f7b6983f | 257 | XFRMA_POLICY_TYPE, /* struct xfrm_userpolicy_type */ |
1da177e4 LT |
258 | __XFRMA_MAX |
259 | ||
260 | #define XFRMA_MAX (__XFRMA_MAX - 1) | |
261 | }; | |
262 | ||
263 | struct xfrm_usersa_info { | |
264 | struct xfrm_selector sel; | |
265 | struct xfrm_id id; | |
266 | xfrm_address_t saddr; | |
267 | struct xfrm_lifetime_cfg lft; | |
268 | struct xfrm_lifetime_cur curlft; | |
269 | struct xfrm_stats stats; | |
270 | __u32 seq; | |
271 | __u32 reqid; | |
272 | __u16 family; | |
7e49e6de | 273 | __u8 mode; /* XFRM_MODE_xxx */ |
1da177e4 LT |
274 | __u8 replay_window; |
275 | __u8 flags; | |
276 | #define XFRM_STATE_NOECN 1 | |
277 | #define XFRM_STATE_DECAP_DSCP 2 | |
dd87147e | 278 | #define XFRM_STATE_NOPMTUDISC 4 |
fbd9a5b4 | 279 | #define XFRM_STATE_WILDRECV 8 |
1da177e4 LT |
280 | }; |
281 | ||
282 | struct xfrm_usersa_id { | |
283 | xfrm_address_t daddr; | |
284 | __u32 spi; | |
285 | __u16 family; | |
286 | __u8 proto; | |
287 | }; | |
288 | ||
f8cd5488 | 289 | struct xfrm_aevent_id { |
f8cd5488 | 290 | struct xfrm_usersa_id sa_id; |
4bf07ef3 | 291 | __u32 flags; |
f8cd5488 JHS |
292 | }; |
293 | ||
1da177e4 LT |
294 | struct xfrm_userspi_info { |
295 | struct xfrm_usersa_info info; | |
296 | __u32 min; | |
297 | __u32 max; | |
298 | }; | |
299 | ||
300 | struct xfrm_userpolicy_info { | |
301 | struct xfrm_selector sel; | |
302 | struct xfrm_lifetime_cfg lft; | |
303 | struct xfrm_lifetime_cur curlft; | |
304 | __u32 priority; | |
305 | __u32 index; | |
306 | __u8 dir; | |
307 | __u8 action; | |
308 | #define XFRM_POLICY_ALLOW 0 | |
309 | #define XFRM_POLICY_BLOCK 1 | |
310 | __u8 flags; | |
311 | #define XFRM_POLICY_LOCALOK 1 /* Allow user to override global policy */ | |
312 | __u8 share; | |
313 | }; | |
314 | ||
315 | struct xfrm_userpolicy_id { | |
316 | struct xfrm_selector sel; | |
317 | __u32 index; | |
318 | __u8 dir; | |
319 | }; | |
320 | ||
321 | struct xfrm_user_acquire { | |
322 | struct xfrm_id id; | |
323 | xfrm_address_t saddr; | |
324 | struct xfrm_selector sel; | |
325 | struct xfrm_userpolicy_info policy; | |
326 | __u32 aalgos; | |
327 | __u32 ealgos; | |
328 | __u32 calgos; | |
329 | __u32 seq; | |
330 | }; | |
331 | ||
332 | struct xfrm_user_expire { | |
333 | struct xfrm_usersa_info state; | |
334 | __u8 hard; | |
335 | }; | |
336 | ||
337 | struct xfrm_user_polexpire { | |
338 | struct xfrm_userpolicy_info pol; | |
339 | __u8 hard; | |
340 | }; | |
341 | ||
342 | struct xfrm_usersa_flush { | |
343 | __u8 proto; | |
344 | }; | |
345 | ||
97a64b45 MN |
346 | struct xfrm_user_report { |
347 | __u8 proto; | |
348 | struct xfrm_selector sel; | |
349 | }; | |
350 | ||
ac6d439d PM |
351 | #ifndef __KERNEL__ |
352 | /* backwards compatibility for userspace */ | |
1da177e4 LT |
353 | #define XFRMGRP_ACQUIRE 1 |
354 | #define XFRMGRP_EXPIRE 2 | |
26b15dad JHS |
355 | #define XFRMGRP_SA 4 |
356 | #define XFRMGRP_POLICY 8 | |
97a64b45 | 357 | #define XFRMGRP_REPORT 0x10 |
ac6d439d PM |
358 | #endif |
359 | ||
360 | enum xfrm_nlgroups { | |
361 | XFRMNLGRP_NONE, | |
362 | #define XFRMNLGRP_NONE XFRMNLGRP_NONE | |
363 | XFRMNLGRP_ACQUIRE, | |
364 | #define XFRMNLGRP_ACQUIRE XFRMNLGRP_ACQUIRE | |
365 | XFRMNLGRP_EXPIRE, | |
366 | #define XFRMNLGRP_EXPIRE XFRMNLGRP_EXPIRE | |
367 | XFRMNLGRP_SA, | |
368 | #define XFRMNLGRP_SA XFRMNLGRP_SA | |
369 | XFRMNLGRP_POLICY, | |
370 | #define XFRMNLGRP_POLICY XFRMNLGRP_POLICY | |
f8cd5488 JHS |
371 | XFRMNLGRP_AEVENTS, |
372 | #define XFRMNLGRP_AEVENTS XFRMNLGRP_AEVENTS | |
97a64b45 MN |
373 | XFRMNLGRP_REPORT, |
374 | #define XFRMNLGRP_REPORT XFRMNLGRP_REPORT | |
ac6d439d PM |
375 | __XFRMNLGRP_MAX |
376 | }; | |
377 | #define XFRMNLGRP_MAX (__XFRMNLGRP_MAX - 1) | |
1da177e4 LT |
378 | |
379 | #endif /* _LINUX_XFRM_H */ |