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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 {
David S. Miller3f4afb62008-01-12 21:31:29 -080094 char alg_name[64];
Eric Dumazetba749ae2008-01-12 21:30:23 -080095 unsigned int alg_key_len; /* in bits */
David S. Miller3f4afb62008-01-12 21:31:29 -080096 char alg_key[0];
Linus Torvalds1da177e2005-04-16 15:20:36 -070097};
98
Herbert Xu1a6509d2008-01-28 19:37:29 -080099struct xfrm_algo_aead {
Eric Dumazet461e6c82008-04-25 00:29:00 -0700100 char alg_name[64];
101 unsigned int alg_key_len; /* in bits */
102 unsigned int alg_icv_len; /* in bits */
103 char alg_key[0];
Herbert Xu1a6509d2008-01-28 19:37:29 -0800104};
105
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106struct xfrm_stats {
107 __u32 replay_window;
108 __u32 replay;
109 __u32 integrity_failed;
110};
111
112enum
113{
Masahide NAKAMURA4e81bb82006-08-23 22:43:30 -0700114 XFRM_POLICY_TYPE_MAIN = 0,
115 XFRM_POLICY_TYPE_SUB = 1,
Timo Teras4c563f72008-02-28 21:31:08 -0800116 XFRM_POLICY_TYPE_MAX = 2,
117 XFRM_POLICY_TYPE_ANY = 255
Masahide NAKAMURA4e81bb82006-08-23 22:43:30 -0700118};
119
120enum
121{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122 XFRM_POLICY_IN = 0,
123 XFRM_POLICY_OUT = 1,
124 XFRM_POLICY_FWD = 2,
Herbert Xud5422ef2007-12-12 10:44:16 -0800125 XFRM_POLICY_MASK = 3,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126 XFRM_POLICY_MAX = 3
127};
128
129enum
130{
131 XFRM_SHARE_ANY, /* No limitations */
132 XFRM_SHARE_SESSION, /* For this session only */
133 XFRM_SHARE_USER, /* For this user only */
134 XFRM_SHARE_UNIQUE /* Use once */
135};
136
Herbert Xub59f45d2006-05-27 23:05:54 -0700137#define XFRM_MODE_TRANSPORT 0
138#define XFRM_MODE_TUNNEL 1
Masahide NAKAMURA7e49e6d2006-09-22 15:05:15 -0700139#define XFRM_MODE_ROUTEOPTIMIZATION 2
140#define XFRM_MODE_IN_TRIGGER 3
Diego Beltrami0a694522006-10-03 23:47:05 -0700141#define XFRM_MODE_BEET 4
142#define XFRM_MODE_MAX 5
Herbert Xub59f45d2006-05-27 23:05:54 -0700143
Linus Torvalds1da177e2005-04-16 15:20:36 -0700144/* Netlink configuration messages. */
145enum {
146 XFRM_MSG_BASE = 0x10,
147
148 XFRM_MSG_NEWSA = 0x10,
149#define XFRM_MSG_NEWSA XFRM_MSG_NEWSA
150 XFRM_MSG_DELSA,
151#define XFRM_MSG_DELSA XFRM_MSG_DELSA
152 XFRM_MSG_GETSA,
153#define XFRM_MSG_GETSA XFRM_MSG_GETSA
154
155 XFRM_MSG_NEWPOLICY,
156#define XFRM_MSG_NEWPOLICY XFRM_MSG_NEWPOLICY
157 XFRM_MSG_DELPOLICY,
158#define XFRM_MSG_DELPOLICY XFRM_MSG_DELPOLICY
159 XFRM_MSG_GETPOLICY,
160#define XFRM_MSG_GETPOLICY XFRM_MSG_GETPOLICY
161
162 XFRM_MSG_ALLOCSPI,
163#define XFRM_MSG_ALLOCSPI XFRM_MSG_ALLOCSPI
164 XFRM_MSG_ACQUIRE,
165#define XFRM_MSG_ACQUIRE XFRM_MSG_ACQUIRE
166 XFRM_MSG_EXPIRE,
167#define XFRM_MSG_EXPIRE XFRM_MSG_EXPIRE
168
169 XFRM_MSG_UPDPOLICY,
170#define XFRM_MSG_UPDPOLICY XFRM_MSG_UPDPOLICY
171 XFRM_MSG_UPDSA,
172#define XFRM_MSG_UPDSA XFRM_MSG_UPDSA
173
174 XFRM_MSG_POLEXPIRE,
175#define XFRM_MSG_POLEXPIRE XFRM_MSG_POLEXPIRE
176
177 XFRM_MSG_FLUSHSA,
178#define XFRM_MSG_FLUSHSA XFRM_MSG_FLUSHSA
179 XFRM_MSG_FLUSHPOLICY,
180#define XFRM_MSG_FLUSHPOLICY XFRM_MSG_FLUSHPOLICY
181
Jamal Hadi Salimf8cd5482006-03-20 19:15:11 -0800182 XFRM_MSG_NEWAE,
183#define XFRM_MSG_NEWAE XFRM_MSG_NEWAE
184 XFRM_MSG_GETAE,
185#define XFRM_MSG_GETAE XFRM_MSG_GETAE
Masahide NAKAMURA97a64b42006-08-23 20:44:06 -0700186
187 XFRM_MSG_REPORT,
188#define XFRM_MSG_REPORT XFRM_MSG_REPORT
189
Shinta Sugimoto80c9aba2007-02-08 13:11:42 -0800190 XFRM_MSG_MIGRATE,
191#define XFRM_MSG_MIGRATE XFRM_MSG_MIGRATE
192
Jamal Hadi Salim28d89092007-04-26 00:10:29 -0700193 XFRM_MSG_NEWSADINFO,
194#define XFRM_MSG_NEWSADINFO XFRM_MSG_NEWSADINFO
195 XFRM_MSG_GETSADINFO,
196#define XFRM_MSG_GETSADINFO XFRM_MSG_GETSADINFO
Jamal Hadi Salimecfd6b12007-04-28 21:20:32 -0700197
198 XFRM_MSG_NEWSPDINFO,
199#define XFRM_MSG_NEWSPDINFO XFRM_MSG_NEWSPDINFO
200 XFRM_MSG_GETSPDINFO,
201#define XFRM_MSG_GETSPDINFO XFRM_MSG_GETSPDINFO
Thomas Graf526bdb82005-05-03 14:26:01 -0700202 __XFRM_MSG_MAX
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203};
Thomas Graf526bdb82005-05-03 14:26:01 -0700204#define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205
Thomas Graf492b5582005-05-03 14:26:40 -0700206#define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE)
207
Trent Jaegerdf718372005-12-13 23:12:27 -0800208/*
209 * Generic LSM security context for comunicating to user space
210 * NOTE: Same format as sadb_x_sec_ctx
211 */
212struct xfrm_user_sec_ctx {
213 __u16 len;
214 __u16 exttype;
215 __u8 ctx_alg; /* LSMs: e.g., selinux == 1 */
216 __u8 ctx_doi;
217 __u16 ctx_len;
218};
219
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220struct xfrm_user_tmpl {
221 struct xfrm_id id;
222 __u16 family;
223 xfrm_address_t saddr;
224 __u32 reqid;
225 __u8 mode;
226 __u8 share;
227 __u8 optional;
228 __u32 aalgos;
229 __u32 ealgos;
230 __u32 calgos;
231};
232
233struct xfrm_encap_tmpl {
234 __u16 encap_type;
Al Virod5a0a1e2006-11-08 00:23:14 -0800235 __be16 encap_sport;
236 __be16 encap_dport;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237 xfrm_address_t encap_oa;
238};
239
Jamal Hadi Salimf8cd5482006-03-20 19:15:11 -0800240/* AEVENT flags */
241enum xfrm_ae_ftype_t {
242 XFRM_AE_UNSPEC,
243 XFRM_AE_RTHR=1, /* replay threshold*/
244 XFRM_AE_RVAL=2, /* replay value */
245 XFRM_AE_LVAL=4, /* lifetime value */
246 XFRM_AE_ETHR=8, /* expiry timer threshold */
247 XFRM_AE_CR=16, /* Event cause is replay update */
248 XFRM_AE_CE=32, /* Event cause is timer expiry */
249 XFRM_AE_CU=64, /* Event cause is policy update */
250 __XFRM_AE_MAX
251
252#define XFRM_AE_MAX (__XFRM_AE_MAX - 1)
253};
254
Masahide NAKAMURAf7b69832006-08-23 22:49:28 -0700255struct xfrm_userpolicy_type {
256 __u8 type;
257 __u16 reserved1;
258 __u8 reserved2;
259};
260
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261/* Netlink message attributes. */
262enum xfrm_attr_type_t {
263 XFRMA_UNSPEC,
264 XFRMA_ALG_AUTH, /* struct xfrm_algo */
265 XFRMA_ALG_CRYPT, /* struct xfrm_algo */
266 XFRMA_ALG_COMP, /* struct xfrm_algo */
267 XFRMA_ENCAP, /* struct xfrm_algo + struct xfrm_encap_tmpl */
268 XFRMA_TMPL, /* 1 or more struct xfrm_user_tmpl */
Herbert Xu0603eac2005-06-18 22:54:36 -0700269 XFRMA_SA,
270 XFRMA_POLICY,
Trent Jaegerdf718372005-12-13 23:12:27 -0800271 XFRMA_SEC_CTX, /* struct xfrm_sec_ctx */
Jamal Hadi Salimf8cd5482006-03-20 19:15:11 -0800272 XFRMA_LTIME_VAL,
273 XFRMA_REPLAY_VAL,
274 XFRMA_REPLAY_THRESH,
275 XFRMA_ETIMER_THRESH,
Masahide NAKAMURAeb2971b2006-08-23 17:56:04 -0700276 XFRMA_SRCADDR, /* xfrm_address_t */
Noriaki TAKAMIYA060f02a2006-08-23 18:18:55 -0700277 XFRMA_COADDR, /* xfrm_address_t */
Masahide NAKAMURA9afaca02006-08-23 18:20:16 -0700278 XFRMA_LASTUSED,
Masahide NAKAMURAf7b69832006-08-23 22:49:28 -0700279 XFRMA_POLICY_TYPE, /* struct xfrm_userpolicy_type */
Shinta Sugimoto80c9aba2007-02-08 13:11:42 -0800280 XFRMA_MIGRATE,
Herbert Xu1a6509d2008-01-28 19:37:29 -0800281 XFRMA_ALG_AEAD, /* struct xfrm_algo_aead */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700282 __XFRMA_MAX
283
284#define XFRMA_MAX (__XFRMA_MAX - 1)
285};
286
Jamal Hadi Salim28d89092007-04-26 00:10:29 -0700287enum xfrm_sadattr_type_t {
288 XFRMA_SAD_UNSPEC,
Jamal Hadi Salimaf11e312007-05-04 12:55:13 -0700289 XFRMA_SAD_CNT,
290 XFRMA_SAD_HINFO,
Jamal Hadi Salim28d89092007-04-26 00:10:29 -0700291 __XFRMA_SAD_MAX
292
293#define XFRMA_SAD_MAX (__XFRMA_SAD_MAX - 1)
294};
295
Jamal Hadi Salimaf11e312007-05-04 12:55:13 -0700296struct xfrmu_sadhinfo {
297 __u32 sadhcnt; /* current hash bkts */
298 __u32 sadhmcnt; /* max allowed hash bkts */
299};
300
Jamal Hadi Salimecfd6b12007-04-28 21:20:32 -0700301enum xfrm_spdattr_type_t {
302 XFRMA_SPD_UNSPEC,
Jamal Hadi Salim5a6d3412007-05-04 12:55:39 -0700303 XFRMA_SPD_INFO,
304 XFRMA_SPD_HINFO,
Jamal Hadi Salimecfd6b12007-04-28 21:20:32 -0700305 __XFRMA_SPD_MAX
306
307#define XFRMA_SPD_MAX (__XFRMA_SPD_MAX - 1)
308};
309
Jamal Hadi Salim5a6d3412007-05-04 12:55:39 -0700310struct xfrmu_spdinfo {
311 __u32 incnt;
312 __u32 outcnt;
313 __u32 fwdcnt;
314 __u32 inscnt;
315 __u32 outscnt;
316 __u32 fwdscnt;
317};
318
319struct xfrmu_spdhinfo {
320 __u32 spdhcnt;
321 __u32 spdhmcnt;
322};
323
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324struct xfrm_usersa_info {
325 struct xfrm_selector sel;
326 struct xfrm_id id;
327 xfrm_address_t saddr;
328 struct xfrm_lifetime_cfg lft;
329 struct xfrm_lifetime_cur curlft;
330 struct xfrm_stats stats;
331 __u32 seq;
332 __u32 reqid;
333 __u16 family;
Masahide NAKAMURA7e49e6d2006-09-22 15:05:15 -0700334 __u8 mode; /* XFRM_MODE_xxx */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700335 __u8 replay_window;
336 __u8 flags;
337#define XFRM_STATE_NOECN 1
338#define XFRM_STATE_DECAP_DSCP 2
Herbert Xudd871472005-06-20 13:21:43 -0700339#define XFRM_STATE_NOPMTUDISC 4
Masahide NAKAMURAfbd9a5b2006-08-23 18:08:21 -0700340#define XFRM_STATE_WILDRECV 8
Herbert Xu8b7817f2007-12-12 10:44:43 -0800341#define XFRM_STATE_ICMP 16
Steffen Klassertccf9b3b2008-07-10 16:55:37 -0700342#define XFRM_STATE_AF_UNSPEC 32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700343};
344
345struct xfrm_usersa_id {
346 xfrm_address_t daddr;
Al Viro9916ecb2006-09-27 18:48:48 -0700347 __be32 spi;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348 __u16 family;
349 __u8 proto;
350};
351
Jamal Hadi Salimf8cd5482006-03-20 19:15:11 -0800352struct xfrm_aevent_id {
Jamal Hadi Salimf8cd5482006-03-20 19:15:11 -0800353 struct xfrm_usersa_id sa_id;
Jamal Hadi Salim2b5f6dc2006-12-02 22:22:25 -0800354 xfrm_address_t saddr;
Jamal Hadi Salim4bf07ef2006-03-20 21:25:50 -0800355 __u32 flags;
Jamal Hadi Salim2b5f6dc2006-12-02 22:22:25 -0800356 __u32 reqid;
Jamal Hadi Salimf8cd5482006-03-20 19:15:11 -0800357};
358
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359struct xfrm_userspi_info {
360 struct xfrm_usersa_info info;
361 __u32 min;
362 __u32 max;
363};
364
365struct xfrm_userpolicy_info {
366 struct xfrm_selector sel;
367 struct xfrm_lifetime_cfg lft;
368 struct xfrm_lifetime_cur curlft;
369 __u32 priority;
370 __u32 index;
371 __u8 dir;
372 __u8 action;
373#define XFRM_POLICY_ALLOW 0
374#define XFRM_POLICY_BLOCK 1
375 __u8 flags;
376#define XFRM_POLICY_LOCALOK 1 /* Allow user to override global policy */
Herbert Xu8b7817f2007-12-12 10:44:43 -0800377 /* Automatically expand selector to include matching ICMP payloads. */
378#define XFRM_POLICY_ICMP 2
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379 __u8 share;
380};
381
382struct xfrm_userpolicy_id {
383 struct xfrm_selector sel;
384 __u32 index;
385 __u8 dir;
386};
387
388struct xfrm_user_acquire {
389 struct xfrm_id id;
390 xfrm_address_t saddr;
391 struct xfrm_selector sel;
392 struct xfrm_userpolicy_info policy;
393 __u32 aalgos;
394 __u32 ealgos;
395 __u32 calgos;
396 __u32 seq;
397};
398
399struct xfrm_user_expire {
400 struct xfrm_usersa_info state;
401 __u8 hard;
402};
403
404struct xfrm_user_polexpire {
405 struct xfrm_userpolicy_info pol;
406 __u8 hard;
407};
408
409struct xfrm_usersa_flush {
410 __u8 proto;
411};
412
Masahide NAKAMURA97a64b42006-08-23 20:44:06 -0700413struct xfrm_user_report {
414 __u8 proto;
415 struct xfrm_selector sel;
416};
417
Shinta Sugimoto80c9aba2007-02-08 13:11:42 -0800418struct xfrm_user_migrate {
419 xfrm_address_t old_daddr;
420 xfrm_address_t old_saddr;
421 xfrm_address_t new_daddr;
422 xfrm_address_t new_saddr;
423 __u8 proto;
424 __u8 mode;
425 __u16 reserved;
426 __u32 reqid;
427 __u16 old_family;
428 __u16 new_family;
429};
430
Patrick McHardyac6d4392005-08-14 19:29:52 -0700431#ifndef __KERNEL__
432/* backwards compatibility for userspace */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700433#define XFRMGRP_ACQUIRE 1
434#define XFRMGRP_EXPIRE 2
Jamal Hadi Salim26b15da2005-06-18 22:42:13 -0700435#define XFRMGRP_SA 4
436#define XFRMGRP_POLICY 8
J Hadi Salim93366c52006-12-08 00:12:15 -0800437#define XFRMGRP_REPORT 0x20
Patrick McHardyac6d4392005-08-14 19:29:52 -0700438#endif
439
440enum xfrm_nlgroups {
441 XFRMNLGRP_NONE,
442#define XFRMNLGRP_NONE XFRMNLGRP_NONE
443 XFRMNLGRP_ACQUIRE,
444#define XFRMNLGRP_ACQUIRE XFRMNLGRP_ACQUIRE
445 XFRMNLGRP_EXPIRE,
446#define XFRMNLGRP_EXPIRE XFRMNLGRP_EXPIRE
447 XFRMNLGRP_SA,
448#define XFRMNLGRP_SA XFRMNLGRP_SA
449 XFRMNLGRP_POLICY,
450#define XFRMNLGRP_POLICY XFRMNLGRP_POLICY
Jamal Hadi Salimf8cd5482006-03-20 19:15:11 -0800451 XFRMNLGRP_AEVENTS,
452#define XFRMNLGRP_AEVENTS XFRMNLGRP_AEVENTS
Masahide NAKAMURA97a64b42006-08-23 20:44:06 -0700453 XFRMNLGRP_REPORT,
454#define XFRMNLGRP_REPORT XFRMNLGRP_REPORT
Shinta Sugimoto80c9aba2007-02-08 13:11:42 -0800455 XFRMNLGRP_MIGRATE,
456#define XFRMNLGRP_MIGRATE XFRMNLGRP_MIGRATE
Patrick McHardyac6d4392005-08-14 19:29:52 -0700457 __XFRMNLGRP_MAX
458};
459#define XFRMNLGRP_MAX (__XFRMNLGRP_MAX - 1)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460
461#endif /* _LINUX_XFRM_H */