Linux kernel mirror (for testing)
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linux
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 */
13typedef 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 */
23struct xfrm_id
24{
25 xfrm_address_t daddr;
26 __be32 spi;
27 __u8 proto;
28};
29
30struct 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
48struct 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
66struct 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
78struct xfrm_lifetime_cur
79{
80 __u64 bytes;
81 __u64 packets;
82 __u64 add_time;
83 __u64 use_time;
84};
85
86struct xfrm_replay_state
87{
88 __u32 oseq;
89 __u32 seq;
90 __u32 bitmap;
91};
92
93struct xfrm_algo {
94 char alg_name[64];
95 int alg_key_len; /* in bits */
96 char alg_key[0];
97};
98
99struct xfrm_stats {
100 __u32 replay_window;
101 __u32 replay;
102 __u32 integrity_failed;
103};
104
105enum
106{
107 XFRM_POLICY_TYPE_MAIN = 0,
108 XFRM_POLICY_TYPE_SUB = 1,
109 XFRM_POLICY_TYPE_MAX = 2
110};
111
112enum
113{
114 XFRM_POLICY_IN = 0,
115 XFRM_POLICY_OUT = 1,
116 XFRM_POLICY_FWD = 2,
117 XFRM_POLICY_MAX = 3
118};
119
120enum
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
128#define XFRM_MODE_TRANSPORT 0
129#define XFRM_MODE_TUNNEL 1
130#define XFRM_MODE_ROUTEOPTIMIZATION 2
131#define XFRM_MODE_IN_TRIGGER 3
132#define XFRM_MODE_BEET 4
133#define XFRM_MODE_MAX 5
134
135/* Netlink configuration messages. */
136enum {
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
173 XFRM_MSG_NEWAE,
174#define XFRM_MSG_NEWAE XFRM_MSG_NEWAE
175 XFRM_MSG_GETAE,
176#define XFRM_MSG_GETAE XFRM_MSG_GETAE
177
178 XFRM_MSG_REPORT,
179#define XFRM_MSG_REPORT XFRM_MSG_REPORT
180
181 XFRM_MSG_MIGRATE,
182#define XFRM_MSG_MIGRATE XFRM_MSG_MIGRATE
183
184 __XFRM_MSG_MAX
185};
186#define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1)
187
188#define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE)
189
190/*
191 * Generic LSM security context for comunicating to user space
192 * NOTE: Same format as sadb_x_sec_ctx
193 */
194struct xfrm_user_sec_ctx {
195 __u16 len;
196 __u16 exttype;
197 __u8 ctx_alg; /* LSMs: e.g., selinux == 1 */
198 __u8 ctx_doi;
199 __u16 ctx_len;
200};
201
202struct xfrm_user_tmpl {
203 struct xfrm_id id;
204 __u16 family;
205 xfrm_address_t saddr;
206 __u32 reqid;
207 __u8 mode;
208 __u8 share;
209 __u8 optional;
210 __u32 aalgos;
211 __u32 ealgos;
212 __u32 calgos;
213};
214
215struct xfrm_encap_tmpl {
216 __u16 encap_type;
217 __be16 encap_sport;
218 __be16 encap_dport;
219 xfrm_address_t encap_oa;
220};
221
222/* AEVENT flags */
223enum xfrm_ae_ftype_t {
224 XFRM_AE_UNSPEC,
225 XFRM_AE_RTHR=1, /* replay threshold*/
226 XFRM_AE_RVAL=2, /* replay value */
227 XFRM_AE_LVAL=4, /* lifetime value */
228 XFRM_AE_ETHR=8, /* expiry timer threshold */
229 XFRM_AE_CR=16, /* Event cause is replay update */
230 XFRM_AE_CE=32, /* Event cause is timer expiry */
231 XFRM_AE_CU=64, /* Event cause is policy update */
232 __XFRM_AE_MAX
233
234#define XFRM_AE_MAX (__XFRM_AE_MAX - 1)
235};
236
237struct xfrm_userpolicy_type {
238 __u8 type;
239 __u16 reserved1;
240 __u8 reserved2;
241};
242
243/* Netlink message attributes. */
244enum xfrm_attr_type_t {
245 XFRMA_UNSPEC,
246 XFRMA_ALG_AUTH, /* struct xfrm_algo */
247 XFRMA_ALG_CRYPT, /* struct xfrm_algo */
248 XFRMA_ALG_COMP, /* struct xfrm_algo */
249 XFRMA_ENCAP, /* struct xfrm_algo + struct xfrm_encap_tmpl */
250 XFRMA_TMPL, /* 1 or more struct xfrm_user_tmpl */
251 XFRMA_SA,
252 XFRMA_POLICY,
253 XFRMA_SEC_CTX, /* struct xfrm_sec_ctx */
254 XFRMA_LTIME_VAL,
255 XFRMA_REPLAY_VAL,
256 XFRMA_REPLAY_THRESH,
257 XFRMA_ETIMER_THRESH,
258 XFRMA_SRCADDR, /* xfrm_address_t */
259 XFRMA_COADDR, /* xfrm_address_t */
260 XFRMA_LASTUSED,
261 XFRMA_POLICY_TYPE, /* struct xfrm_userpolicy_type */
262 XFRMA_MIGRATE,
263 __XFRMA_MAX
264
265#define XFRMA_MAX (__XFRMA_MAX - 1)
266};
267
268struct xfrm_usersa_info {
269 struct xfrm_selector sel;
270 struct xfrm_id id;
271 xfrm_address_t saddr;
272 struct xfrm_lifetime_cfg lft;
273 struct xfrm_lifetime_cur curlft;
274 struct xfrm_stats stats;
275 __u32 seq;
276 __u32 reqid;
277 __u16 family;
278 __u8 mode; /* XFRM_MODE_xxx */
279 __u8 replay_window;
280 __u8 flags;
281#define XFRM_STATE_NOECN 1
282#define XFRM_STATE_DECAP_DSCP 2
283#define XFRM_STATE_NOPMTUDISC 4
284#define XFRM_STATE_WILDRECV 8
285};
286
287struct xfrm_usersa_id {
288 xfrm_address_t daddr;
289 __be32 spi;
290 __u16 family;
291 __u8 proto;
292};
293
294struct xfrm_aevent_id {
295 struct xfrm_usersa_id sa_id;
296 xfrm_address_t saddr;
297 __u32 flags;
298 __u32 reqid;
299};
300
301struct xfrm_userspi_info {
302 struct xfrm_usersa_info info;
303 __u32 min;
304 __u32 max;
305};
306
307struct xfrm_userpolicy_info {
308 struct xfrm_selector sel;
309 struct xfrm_lifetime_cfg lft;
310 struct xfrm_lifetime_cur curlft;
311 __u32 priority;
312 __u32 index;
313 __u8 dir;
314 __u8 action;
315#define XFRM_POLICY_ALLOW 0
316#define XFRM_POLICY_BLOCK 1
317 __u8 flags;
318#define XFRM_POLICY_LOCALOK 1 /* Allow user to override global policy */
319 __u8 share;
320};
321
322struct xfrm_userpolicy_id {
323 struct xfrm_selector sel;
324 __u32 index;
325 __u8 dir;
326};
327
328struct xfrm_user_acquire {
329 struct xfrm_id id;
330 xfrm_address_t saddr;
331 struct xfrm_selector sel;
332 struct xfrm_userpolicy_info policy;
333 __u32 aalgos;
334 __u32 ealgos;
335 __u32 calgos;
336 __u32 seq;
337};
338
339struct xfrm_user_expire {
340 struct xfrm_usersa_info state;
341 __u8 hard;
342};
343
344struct xfrm_user_polexpire {
345 struct xfrm_userpolicy_info pol;
346 __u8 hard;
347};
348
349struct xfrm_usersa_flush {
350 __u8 proto;
351};
352
353struct xfrm_user_report {
354 __u8 proto;
355 struct xfrm_selector sel;
356};
357
358struct xfrm_user_migrate {
359 xfrm_address_t old_daddr;
360 xfrm_address_t old_saddr;
361 xfrm_address_t new_daddr;
362 xfrm_address_t new_saddr;
363 __u8 proto;
364 __u8 mode;
365 __u16 reserved;
366 __u32 reqid;
367 __u16 old_family;
368 __u16 new_family;
369};
370
371#ifndef __KERNEL__
372/* backwards compatibility for userspace */
373#define XFRMGRP_ACQUIRE 1
374#define XFRMGRP_EXPIRE 2
375#define XFRMGRP_SA 4
376#define XFRMGRP_POLICY 8
377#define XFRMGRP_REPORT 0x20
378#endif
379
380enum xfrm_nlgroups {
381 XFRMNLGRP_NONE,
382#define XFRMNLGRP_NONE XFRMNLGRP_NONE
383 XFRMNLGRP_ACQUIRE,
384#define XFRMNLGRP_ACQUIRE XFRMNLGRP_ACQUIRE
385 XFRMNLGRP_EXPIRE,
386#define XFRMNLGRP_EXPIRE XFRMNLGRP_EXPIRE
387 XFRMNLGRP_SA,
388#define XFRMNLGRP_SA XFRMNLGRP_SA
389 XFRMNLGRP_POLICY,
390#define XFRMNLGRP_POLICY XFRMNLGRP_POLICY
391 XFRMNLGRP_AEVENTS,
392#define XFRMNLGRP_AEVENTS XFRMNLGRP_AEVENTS
393 XFRMNLGRP_REPORT,
394#define XFRMNLGRP_REPORT XFRMNLGRP_REPORT
395 XFRMNLGRP_MIGRATE,
396#define XFRMNLGRP_MIGRATE XFRMNLGRP_MIGRATE
397 __XFRMNLGRP_MAX
398};
399#define XFRMNLGRP_MAX (__XFRMNLGRP_MAX - 1)
400
401#endif /* _LINUX_XFRM_H */