blob: 430afd05826975e4df9a65afe68e5b9729c1b11c [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001#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{
Al Viro737b5762006-09-27 18:46:48 -070015 __be32 a4;
16 __be32 a6[4];
Linus Torvalds1da177e2005-04-16 15:20:36 -070017} 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;
Al Viroe037c392006-09-27 18:47:40 -070026 __be32 spi;
Linus Torvalds1da177e2005-04-16 15:20:36 -070027 __u8 proto;
28};
29
Trent Jaegerdf718372005-12-13 23:12:27 -080030struct 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070046/* 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;
Al Viro8f83f232006-09-27 18:46:11 -070052 __be16 dport;
53 __be16 dport_mask;
54 __be16 sport;
55 __be16 sport_mask;
Linus Torvalds1da177e2005-04-16 15:20:36 -070056 __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{
Masahide NAKAMURA4e81bb82006-08-23 22:43:30 -0700107 XFRM_POLICY_TYPE_MAIN = 0,
108 XFRM_POLICY_TYPE_SUB = 1,
109 XFRM_POLICY_TYPE_MAX = 2
110};
111
112enum
113{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114 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
Herbert Xub59f45d2006-05-27 23:05:54 -0700128#define XFRM_MODE_TRANSPORT 0
129#define XFRM_MODE_TUNNEL 1
Masahide NAKAMURA7e49e6d2006-09-22 15:05:15 -0700130#define XFRM_MODE_ROUTEOPTIMIZATION 2
131#define XFRM_MODE_IN_TRIGGER 3
132#define XFRM_MODE_MAX 4
Herbert Xub59f45d2006-05-27 23:05:54 -0700133
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134/* Netlink configuration messages. */
135enum {
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
Jamal Hadi Salimf8cd5482006-03-20 19:15:11 -0800172 XFRM_MSG_NEWAE,
173#define XFRM_MSG_NEWAE XFRM_MSG_NEWAE
174 XFRM_MSG_GETAE,
175#define XFRM_MSG_GETAE XFRM_MSG_GETAE
Masahide NAKAMURA97a64b42006-08-23 20:44:06 -0700176
177 XFRM_MSG_REPORT,
178#define XFRM_MSG_REPORT XFRM_MSG_REPORT
179
Thomas Graf526bdb82005-05-03 14:26:01 -0700180 __XFRM_MSG_MAX
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181};
Thomas Graf526bdb82005-05-03 14:26:01 -0700182#define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183
Thomas Graf492b5582005-05-03 14:26:40 -0700184#define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE)
185
Trent Jaegerdf718372005-12-13 23:12:27 -0800186/*
187 * Generic LSM security context for comunicating to user space
188 * NOTE: Same format as sadb_x_sec_ctx
189 */
190struct 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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198struct 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
211struct xfrm_encap_tmpl {
212 __u16 encap_type;
213 __u16 encap_sport;
214 __u16 encap_dport;
215 xfrm_address_t encap_oa;
216};
217
Jamal Hadi Salimf8cd5482006-03-20 19:15:11 -0800218/* AEVENT flags */
219enum 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
Masahide NAKAMURAf7b69832006-08-23 22:49:28 -0700233struct xfrm_userpolicy_type {
234 __u8 type;
235 __u16 reserved1;
236 __u8 reserved2;
237};
238
Linus Torvalds1da177e2005-04-16 15:20:36 -0700239/* Netlink message attributes. */
240enum 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 */
Herbert Xu0603eac2005-06-18 22:54:36 -0700247 XFRMA_SA,
248 XFRMA_POLICY,
Trent Jaegerdf718372005-12-13 23:12:27 -0800249 XFRMA_SEC_CTX, /* struct xfrm_sec_ctx */
Jamal Hadi Salimf8cd5482006-03-20 19:15:11 -0800250 XFRMA_LTIME_VAL,
251 XFRMA_REPLAY_VAL,
252 XFRMA_REPLAY_THRESH,
253 XFRMA_ETIMER_THRESH,
Masahide NAKAMURAeb2971b2006-08-23 17:56:04 -0700254 XFRMA_SRCADDR, /* xfrm_address_t */
Noriaki TAKAMIYA060f02a2006-08-23 18:18:55 -0700255 XFRMA_COADDR, /* xfrm_address_t */
Masahide NAKAMURA9afaca02006-08-23 18:20:16 -0700256 XFRMA_LASTUSED,
Masahide NAKAMURAf7b69832006-08-23 22:49:28 -0700257 XFRMA_POLICY_TYPE, /* struct xfrm_userpolicy_type */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258 __XFRMA_MAX
259
260#define XFRMA_MAX (__XFRMA_MAX - 1)
261};
262
263struct 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;
Masahide NAKAMURA7e49e6d2006-09-22 15:05:15 -0700273 __u8 mode; /* XFRM_MODE_xxx */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700274 __u8 replay_window;
275 __u8 flags;
276#define XFRM_STATE_NOECN 1
277#define XFRM_STATE_DECAP_DSCP 2
Herbert Xudd871472005-06-20 13:21:43 -0700278#define XFRM_STATE_NOPMTUDISC 4
Masahide NAKAMURAfbd9a5b2006-08-23 18:08:21 -0700279#define XFRM_STATE_WILDRECV 8
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280};
281
282struct xfrm_usersa_id {
283 xfrm_address_t daddr;
Al Viro9916ecb2006-09-27 18:48:48 -0700284 __be32 spi;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700285 __u16 family;
286 __u8 proto;
287};
288
Jamal Hadi Salimf8cd5482006-03-20 19:15:11 -0800289struct xfrm_aevent_id {
Jamal Hadi Salimf8cd5482006-03-20 19:15:11 -0800290 struct xfrm_usersa_id sa_id;
Jamal Hadi Salim4bf07ef2006-03-20 21:25:50 -0800291 __u32 flags;
Jamal Hadi Salimf8cd5482006-03-20 19:15:11 -0800292};
293
Linus Torvalds1da177e2005-04-16 15:20:36 -0700294struct xfrm_userspi_info {
295 struct xfrm_usersa_info info;
296 __u32 min;
297 __u32 max;
298};
299
300struct 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
315struct xfrm_userpolicy_id {
316 struct xfrm_selector sel;
317 __u32 index;
318 __u8 dir;
319};
320
321struct 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
332struct xfrm_user_expire {
333 struct xfrm_usersa_info state;
334 __u8 hard;
335};
336
337struct xfrm_user_polexpire {
338 struct xfrm_userpolicy_info pol;
339 __u8 hard;
340};
341
342struct xfrm_usersa_flush {
343 __u8 proto;
344};
345
Masahide NAKAMURA97a64b42006-08-23 20:44:06 -0700346struct xfrm_user_report {
347 __u8 proto;
348 struct xfrm_selector sel;
349};
350
Patrick McHardyac6d4392005-08-14 19:29:52 -0700351#ifndef __KERNEL__
352/* backwards compatibility for userspace */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353#define XFRMGRP_ACQUIRE 1
354#define XFRMGRP_EXPIRE 2
Jamal Hadi Salim26b15da2005-06-18 22:42:13 -0700355#define XFRMGRP_SA 4
356#define XFRMGRP_POLICY 8
Masahide NAKAMURA97a64b42006-08-23 20:44:06 -0700357#define XFRMGRP_REPORT 0x10
Patrick McHardyac6d4392005-08-14 19:29:52 -0700358#endif
359
360enum 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
Jamal Hadi Salimf8cd5482006-03-20 19:15:11 -0800371 XFRMNLGRP_AEVENTS,
372#define XFRMNLGRP_AEVENTS XFRMNLGRP_AEVENTS
Masahide NAKAMURA97a64b42006-08-23 20:44:06 -0700373 XFRMNLGRP_REPORT,
374#define XFRMNLGRP_REPORT XFRMNLGRP_REPORT
Patrick McHardyac6d4392005-08-14 19:29:52 -0700375 __XFRMNLGRP_MAX
376};
377#define XFRMNLGRP_MAX (__XFRMNLGRP_MAX - 1)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378
379#endif /* _LINUX_XFRM_H */