Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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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 __be32 a4;
15 __be32 a6[4];
16} xfrm_address_t;
17
18/* Ident of a specific xfrm_state. It is used on input to lookup
19 * the state by (spi,daddr,ah/esp) or to store information about
20 * spi, protocol and tunnel address on output.
21 */
22struct xfrm_id {
23 xfrm_address_t daddr;
24 __be32 spi;
25 __u8 proto;
26};
27
28struct xfrm_sec_ctx {
29 __u8 ctx_doi;
30 __u8 ctx_alg;
31 __u16 ctx_len;
32 __u32 ctx_sid;
33 char ctx_str[0];
34};
35
36/* Security Context Domains of Interpretation */
37#define XFRM_SC_DOI_RESERVED 0
38#define XFRM_SC_DOI_LSM 1
39
40/* Security Context Algorithms */
41#define XFRM_SC_ALG_RESERVED 0
42#define XFRM_SC_ALG_SELINUX 1
43
44/* Selector, used as selector both on policy rules (SPD) and SAs. */
45
46struct xfrm_selector {
47 xfrm_address_t daddr;
48 xfrm_address_t saddr;
49 __be16 dport;
50 __be16 dport_mask;
51 __be16 sport;
52 __be16 sport_mask;
53 __u16 family;
54 __u8 prefixlen_d;
55 __u8 prefixlen_s;
56 __u8 proto;
57 int ifindex;
58 __kernel_uid32_t user;
59};
60
61#define XFRM_INF (~(__u64)0)
62
63struct xfrm_lifetime_cfg {
64 __u64 soft_byte_limit;
65 __u64 hard_byte_limit;
66 __u64 soft_packet_limit;
67 __u64 hard_packet_limit;
68 __u64 soft_add_expires_seconds;
69 __u64 hard_add_expires_seconds;
70 __u64 soft_use_expires_seconds;
71 __u64 hard_use_expires_seconds;
72};
73
74struct xfrm_lifetime_cur {
75 __u64 bytes;
76 __u64 packets;
77 __u64 add_time;
78 __u64 use_time;
79};
80
81struct xfrm_replay_state {
82 __u32 oseq;
83 __u32 seq;
84 __u32 bitmap;
85};
86
87#define XFRMA_REPLAY_ESN_MAX 4096
88
89struct xfrm_replay_state_esn {
90 unsigned int bmp_len;
91 __u32 oseq;
92 __u32 seq;
93 __u32 oseq_hi;
94 __u32 seq_hi;
95 __u32 replay_window;
96 __u32 bmp[0];
97};
98
99struct xfrm_algo {
100 char alg_name[64];
101 unsigned int alg_key_len; /* in bits */
102 char alg_key[0];
103};
104
105struct xfrm_algo_auth {
106 char alg_name[64];
107 unsigned int alg_key_len; /* in bits */
108 unsigned int alg_trunc_len; /* in bits */
109 char alg_key[0];
110};
111
112struct xfrm_algo_aead {
113 char alg_name[64];
114 unsigned int alg_key_len; /* in bits */
115 unsigned int alg_icv_len; /* in bits */
116 char alg_key[0];
117};
118
119struct xfrm_stats {
120 __u32 replay_window;
121 __u32 replay;
122 __u32 integrity_failed;
123};
124
125enum {
126 XFRM_POLICY_TYPE_MAIN = 0,
127 XFRM_POLICY_TYPE_SUB = 1,
128 XFRM_POLICY_TYPE_MAX = 2,
129 XFRM_POLICY_TYPE_ANY = 255
130};
131
132enum {
133 XFRM_POLICY_IN = 0,
134 XFRM_POLICY_OUT = 1,
135 XFRM_POLICY_FWD = 2,
136 XFRM_POLICY_MASK = 3,
137 XFRM_POLICY_MAX = 3
138};
139
140enum {
141 XFRM_SHARE_ANY, /* No limitations */
142 XFRM_SHARE_SESSION, /* For this session only */
143 XFRM_SHARE_USER, /* For this user only */
144 XFRM_SHARE_UNIQUE /* Use once */
145};
146
147#define XFRM_MODE_TRANSPORT 0
148#define XFRM_MODE_TUNNEL 1
149#define XFRM_MODE_ROUTEOPTIMIZATION 2
150#define XFRM_MODE_IN_TRIGGER 3
151#define XFRM_MODE_BEET 4
152#define XFRM_MODE_MAX 5
153
154/* Netlink configuration messages. */
155enum {
156 XFRM_MSG_BASE = 0x10,
157
158 XFRM_MSG_NEWSA = 0x10,
159#define XFRM_MSG_NEWSA XFRM_MSG_NEWSA
160 XFRM_MSG_DELSA,
161#define XFRM_MSG_DELSA XFRM_MSG_DELSA
162 XFRM_MSG_GETSA,
163#define XFRM_MSG_GETSA XFRM_MSG_GETSA
164
165 XFRM_MSG_NEWPOLICY,
166#define XFRM_MSG_NEWPOLICY XFRM_MSG_NEWPOLICY
167 XFRM_MSG_DELPOLICY,
168#define XFRM_MSG_DELPOLICY XFRM_MSG_DELPOLICY
169 XFRM_MSG_GETPOLICY,
170#define XFRM_MSG_GETPOLICY XFRM_MSG_GETPOLICY
171
172 XFRM_MSG_ALLOCSPI,
173#define XFRM_MSG_ALLOCSPI XFRM_MSG_ALLOCSPI
174 XFRM_MSG_ACQUIRE,
175#define XFRM_MSG_ACQUIRE XFRM_MSG_ACQUIRE
176 XFRM_MSG_EXPIRE,
177#define XFRM_MSG_EXPIRE XFRM_MSG_EXPIRE
178
179 XFRM_MSG_UPDPOLICY,
180#define XFRM_MSG_UPDPOLICY XFRM_MSG_UPDPOLICY
181 XFRM_MSG_UPDSA,
182#define XFRM_MSG_UPDSA XFRM_MSG_UPDSA
183
184 XFRM_MSG_POLEXPIRE,
185#define XFRM_MSG_POLEXPIRE XFRM_MSG_POLEXPIRE
186
187 XFRM_MSG_FLUSHSA,
188#define XFRM_MSG_FLUSHSA XFRM_MSG_FLUSHSA
189 XFRM_MSG_FLUSHPOLICY,
190#define XFRM_MSG_FLUSHPOLICY XFRM_MSG_FLUSHPOLICY
191
192 XFRM_MSG_NEWAE,
193#define XFRM_MSG_NEWAE XFRM_MSG_NEWAE
194 XFRM_MSG_GETAE,
195#define XFRM_MSG_GETAE XFRM_MSG_GETAE
196
197 XFRM_MSG_REPORT,
198#define XFRM_MSG_REPORT XFRM_MSG_REPORT
199
200 XFRM_MSG_MIGRATE,
201#define XFRM_MSG_MIGRATE XFRM_MSG_MIGRATE
202
203 XFRM_MSG_NEWSADINFO,
204#define XFRM_MSG_NEWSADINFO XFRM_MSG_NEWSADINFO
205 XFRM_MSG_GETSADINFO,
206#define XFRM_MSG_GETSADINFO XFRM_MSG_GETSADINFO
207
208 XFRM_MSG_NEWSPDINFO,
209#define XFRM_MSG_NEWSPDINFO XFRM_MSG_NEWSPDINFO
210 XFRM_MSG_GETSPDINFO,
211#define XFRM_MSG_GETSPDINFO XFRM_MSG_GETSPDINFO
212
213 XFRM_MSG_MAPPING,
214#define XFRM_MSG_MAPPING XFRM_MSG_MAPPING
215 __XFRM_MSG_MAX
216};
217#define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1)
218
219#define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE)
220
221/*
222 * Generic LSM security context for comunicating to user space
223 * NOTE: Same format as sadb_x_sec_ctx
224 */
225struct xfrm_user_sec_ctx {
226 __u16 len;
227 __u16 exttype;
228 __u8 ctx_alg; /* LSMs: e.g., selinux == 1 */
229 __u8 ctx_doi;
230 __u16 ctx_len;
231};
232
233struct xfrm_user_tmpl {
234 struct xfrm_id id;
235 __u16 family;
236 xfrm_address_t saddr;
237 __u32 reqid;
238 __u8 mode;
239 __u8 share;
240 __u8 optional;
241 __u32 aalgos;
242 __u32 ealgos;
243 __u32 calgos;
244};
245
246struct xfrm_encap_tmpl {
247 __u16 encap_type;
248 __be16 encap_sport;
249 __be16 encap_dport;
250 xfrm_address_t encap_oa;
251};
252
253/* AEVENT flags */
254enum xfrm_ae_ftype_t {
255 XFRM_AE_UNSPEC,
256 XFRM_AE_RTHR=1, /* replay threshold*/
257 XFRM_AE_RVAL=2, /* replay value */
258 XFRM_AE_LVAL=4, /* lifetime value */
259 XFRM_AE_ETHR=8, /* expiry timer threshold */
260 XFRM_AE_CR=16, /* Event cause is replay update */
261 XFRM_AE_CE=32, /* Event cause is timer expiry */
262 XFRM_AE_CU=64, /* Event cause is policy update */
263 __XFRM_AE_MAX
264
265#define XFRM_AE_MAX (__XFRM_AE_MAX - 1)
266};
267
268struct xfrm_userpolicy_type {
269 __u8 type;
270 __u16 reserved1;
271 __u8 reserved2;
272};
273
274/* Netlink message attributes. */
275enum xfrm_attr_type_t {
276 XFRMA_UNSPEC,
277 XFRMA_ALG_AUTH, /* struct xfrm_algo */
278 XFRMA_ALG_CRYPT, /* struct xfrm_algo */
279 XFRMA_ALG_COMP, /* struct xfrm_algo */
280 XFRMA_ENCAP, /* struct xfrm_algo + struct xfrm_encap_tmpl */
281 XFRMA_TMPL, /* 1 or more struct xfrm_user_tmpl */
282 XFRMA_SA, /* struct xfrm_usersa_info */
283 XFRMA_POLICY, /*struct xfrm_userpolicy_info */
284 XFRMA_SEC_CTX, /* struct xfrm_sec_ctx */
285 XFRMA_LTIME_VAL,
286 XFRMA_REPLAY_VAL,
287 XFRMA_REPLAY_THRESH,
288 XFRMA_ETIMER_THRESH,
289 XFRMA_SRCADDR, /* xfrm_address_t */
290 XFRMA_COADDR, /* xfrm_address_t */
291 XFRMA_LASTUSED, /* unsigned long */
292 XFRMA_POLICY_TYPE, /* struct xfrm_userpolicy_type */
293 XFRMA_MIGRATE,
294 XFRMA_ALG_AEAD, /* struct xfrm_algo_aead */
295 XFRMA_KMADDRESS, /* struct xfrm_user_kmaddress */
296 XFRMA_ALG_AUTH_TRUNC, /* struct xfrm_algo_auth */
297 XFRMA_MARK, /* struct xfrm_mark */
298 XFRMA_TFCPAD, /* __u32 */
299 XFRMA_REPLAY_ESN_VAL, /* struct xfrm_replay_esn */
300 __XFRMA_MAX
301
302#define XFRMA_MAX (__XFRMA_MAX - 1)
303};
304
305struct xfrm_mark {
306 __u32 v; /* value */
307 __u32 m; /* mask */
308};
309
310enum xfrm_sadattr_type_t {
311 XFRMA_SAD_UNSPEC,
312 XFRMA_SAD_CNT,
313 XFRMA_SAD_HINFO,
314 __XFRMA_SAD_MAX
315
316#define XFRMA_SAD_MAX (__XFRMA_SAD_MAX - 1)
317};
318
319struct xfrmu_sadhinfo {
320 __u32 sadhcnt; /* current hash bkts */
321 __u32 sadhmcnt; /* max allowed hash bkts */
322};
323
324enum xfrm_spdattr_type_t {
325 XFRMA_SPD_UNSPEC,
326 XFRMA_SPD_INFO,
327 XFRMA_SPD_HINFO,
328 __XFRMA_SPD_MAX
329
330#define XFRMA_SPD_MAX (__XFRMA_SPD_MAX - 1)
331};
332
333struct xfrmu_spdinfo {
334 __u32 incnt;
335 __u32 outcnt;
336 __u32 fwdcnt;
337 __u32 inscnt;
338 __u32 outscnt;
339 __u32 fwdscnt;
340};
341
342struct xfrmu_spdhinfo {
343 __u32 spdhcnt;
344 __u32 spdhmcnt;
345};
346
347struct xfrm_usersa_info {
348 struct xfrm_selector sel;
349 struct xfrm_id id;
350 xfrm_address_t saddr;
351 struct xfrm_lifetime_cfg lft;
352 struct xfrm_lifetime_cur curlft;
353 struct xfrm_stats stats;
354 __u32 seq;
355 __u32 reqid;
356 __u16 family;
357 __u8 mode; /* XFRM_MODE_xxx */
358 __u8 replay_window;
359 __u8 flags;
360#define XFRM_STATE_NOECN 1
361#define XFRM_STATE_DECAP_DSCP 2
362#define XFRM_STATE_NOPMTUDISC 4
363#define XFRM_STATE_WILDRECV 8
364#define XFRM_STATE_ICMP 16
365#define XFRM_STATE_AF_UNSPEC 32
366#define XFRM_STATE_ALIGN4 64
367#define XFRM_STATE_ESN 128
368};
369
370struct xfrm_usersa_id {
371 xfrm_address_t daddr;
372 __be32 spi;
373 __u16 family;
374 __u8 proto;
375};
376
377struct xfrm_aevent_id {
378 struct xfrm_usersa_id sa_id;
379 xfrm_address_t saddr;
380 __u32 flags;
381 __u32 reqid;
382};
383
384struct xfrm_userspi_info {
385 struct xfrm_usersa_info info;
386 __u32 min;
387 __u32 max;
388};
389
390struct xfrm_userpolicy_info {
391 struct xfrm_selector sel;
392 struct xfrm_lifetime_cfg lft;
393 struct xfrm_lifetime_cur curlft;
394 __u32 priority;
395 __u32 index;
396 __u8 dir;
397 __u8 action;
398#define XFRM_POLICY_ALLOW 0
399#define XFRM_POLICY_BLOCK 1
400 __u8 flags;
401#define XFRM_POLICY_LOCALOK 1 /* Allow user to override global policy */
402 /* Automatically expand selector to include matching ICMP payloads. */
403#define XFRM_POLICY_ICMP 2
404 __u8 share;
405};
406
407struct xfrm_userpolicy_id {
408 struct xfrm_selector sel;
409 __u32 index;
410 __u8 dir;
411};
412
413struct xfrm_user_acquire {
414 struct xfrm_id id;
415 xfrm_address_t saddr;
416 struct xfrm_selector sel;
417 struct xfrm_userpolicy_info policy;
418 __u32 aalgos;
419 __u32 ealgos;
420 __u32 calgos;
421 __u32 seq;
422};
423
424struct xfrm_user_expire {
425 struct xfrm_usersa_info state;
426 __u8 hard;
427};
428
429struct xfrm_user_polexpire {
430 struct xfrm_userpolicy_info pol;
431 __u8 hard;
432};
433
434struct xfrm_usersa_flush {
435 __u8 proto;
436};
437
438struct xfrm_user_report {
439 __u8 proto;
440 struct xfrm_selector sel;
441};
442
443/* Used by MIGRATE to pass addresses IKE should use to perform
444 * SA negotiation with the peer */
445struct xfrm_user_kmaddress {
446 xfrm_address_t local;
447 xfrm_address_t remote;
448 __u32 reserved;
449 __u16 family;
450};
451
452struct xfrm_user_migrate {
453 xfrm_address_t old_daddr;
454 xfrm_address_t old_saddr;
455 xfrm_address_t new_daddr;
456 xfrm_address_t new_saddr;
457 __u8 proto;
458 __u8 mode;
459 __u16 reserved;
460 __u32 reqid;
461 __u16 old_family;
462 __u16 new_family;
463};
464
465struct xfrm_user_mapping {
466 struct xfrm_usersa_id id;
467 __u32 reqid;
468 xfrm_address_t old_saddr;
469 xfrm_address_t new_saddr;
470 __be16 old_sport;
471 __be16 new_sport;
472};
473
474#ifndef __KERNEL__
475/* backwards compatibility for userspace */
476#define XFRMGRP_ACQUIRE 1
477#define XFRMGRP_EXPIRE 2
478#define XFRMGRP_SA 4
479#define XFRMGRP_POLICY 8
480#define XFRMGRP_REPORT 0x20
481#endif
482
483enum xfrm_nlgroups {
484 XFRMNLGRP_NONE,
485#define XFRMNLGRP_NONE XFRMNLGRP_NONE
486 XFRMNLGRP_ACQUIRE,
487#define XFRMNLGRP_ACQUIRE XFRMNLGRP_ACQUIRE
488 XFRMNLGRP_EXPIRE,
489#define XFRMNLGRP_EXPIRE XFRMNLGRP_EXPIRE
490 XFRMNLGRP_SA,
491#define XFRMNLGRP_SA XFRMNLGRP_SA
492 XFRMNLGRP_POLICY,
493#define XFRMNLGRP_POLICY XFRMNLGRP_POLICY
494 XFRMNLGRP_AEVENTS,
495#define XFRMNLGRP_AEVENTS XFRMNLGRP_AEVENTS
496 XFRMNLGRP_REPORT,
497#define XFRMNLGRP_REPORT XFRMNLGRP_REPORT
498 XFRMNLGRP_MIGRATE,
499#define XFRMNLGRP_MIGRATE XFRMNLGRP_MIGRATE
500 XFRMNLGRP_MAPPING,
501#define XFRMNLGRP_MAPPING XFRMNLGRP_MAPPING
502 __XFRMNLGRP_MAX
503};
504#define XFRMNLGRP_MAX (__XFRMNLGRP_MAX - 1)
505
506#endif /* _LINUX_XFRM_H */