Linux kernel mirror (for testing)
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linux
1#ifndef _LINUX_XFRM_H
2#define _LINUX_XFRM_H
3
4#include <linux/in6.h>
5#include <linux/types.h>
6
7/* All of the structures in this file may not change size as they are
8 * passed into the kernel from userspace via netlink sockets.
9 */
10
11/* Structure to encapsulate addresses. I do not want to use
12 * "standard" structure. My apologies.
13 */
14typedef union {
15 __be32 a4;
16 __be32 a6[4];
17 struct in6_addr in6;
18} xfrm_address_t;
19
20/* Ident of a specific xfrm_state. It is used on input to lookup
21 * the state by (spi,daddr,ah/esp) or to store information about
22 * spi, protocol and tunnel address on output.
23 */
24struct xfrm_id {
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 xfrm_address_t daddr;
50 xfrm_address_t saddr;
51 __be16 dport;
52 __be16 dport_mask;
53 __be16 sport;
54 __be16 sport_mask;
55 __u16 family;
56 __u8 prefixlen_d;
57 __u8 prefixlen_s;
58 __u8 proto;
59 int ifindex;
60 __kernel_uid32_t user;
61};
62
63#define XFRM_INF (~(__u64)0)
64
65struct xfrm_lifetime_cfg {
66 __u64 soft_byte_limit;
67 __u64 hard_byte_limit;
68 __u64 soft_packet_limit;
69 __u64 hard_packet_limit;
70 __u64 soft_add_expires_seconds;
71 __u64 hard_add_expires_seconds;
72 __u64 soft_use_expires_seconds;
73 __u64 hard_use_expires_seconds;
74};
75
76struct xfrm_lifetime_cur {
77 __u64 bytes;
78 __u64 packets;
79 __u64 add_time;
80 __u64 use_time;
81};
82
83struct xfrm_replay_state {
84 __u32 oseq;
85 __u32 seq;
86 __u32 bitmap;
87};
88
89#define XFRMA_REPLAY_ESN_MAX 4096
90
91struct xfrm_replay_state_esn {
92 unsigned int bmp_len;
93 __u32 oseq;
94 __u32 seq;
95 __u32 oseq_hi;
96 __u32 seq_hi;
97 __u32 replay_window;
98 __u32 bmp[0];
99};
100
101struct xfrm_algo {
102 char alg_name[64];
103 unsigned int alg_key_len; /* in bits */
104 char alg_key[0];
105};
106
107struct xfrm_algo_auth {
108 char alg_name[64];
109 unsigned int alg_key_len; /* in bits */
110 unsigned int alg_trunc_len; /* in bits */
111 char alg_key[0];
112};
113
114struct xfrm_algo_aead {
115 char alg_name[64];
116 unsigned int alg_key_len; /* in bits */
117 unsigned int alg_icv_len; /* in bits */
118 char alg_key[0];
119};
120
121struct xfrm_stats {
122 __u32 replay_window;
123 __u32 replay;
124 __u32 integrity_failed;
125};
126
127enum {
128 XFRM_POLICY_TYPE_MAIN = 0,
129 XFRM_POLICY_TYPE_SUB = 1,
130 XFRM_POLICY_TYPE_MAX = 2,
131 XFRM_POLICY_TYPE_ANY = 255
132};
133
134enum {
135 XFRM_POLICY_IN = 0,
136 XFRM_POLICY_OUT = 1,
137 XFRM_POLICY_FWD = 2,
138 XFRM_POLICY_MASK = 3,
139 XFRM_POLICY_MAX = 3
140};
141
142enum {
143 XFRM_SHARE_ANY, /* No limitations */
144 XFRM_SHARE_SESSION, /* For this session only */
145 XFRM_SHARE_USER, /* For this user only */
146 XFRM_SHARE_UNIQUE /* Use once */
147};
148
149#define XFRM_MODE_TRANSPORT 0
150#define XFRM_MODE_TUNNEL 1
151#define XFRM_MODE_ROUTEOPTIMIZATION 2
152#define XFRM_MODE_IN_TRIGGER 3
153#define XFRM_MODE_BEET 4
154#define XFRM_MODE_MAX 5
155
156/* Netlink configuration messages. */
157enum {
158 XFRM_MSG_BASE = 0x10,
159
160 XFRM_MSG_NEWSA = 0x10,
161#define XFRM_MSG_NEWSA XFRM_MSG_NEWSA
162 XFRM_MSG_DELSA,
163#define XFRM_MSG_DELSA XFRM_MSG_DELSA
164 XFRM_MSG_GETSA,
165#define XFRM_MSG_GETSA XFRM_MSG_GETSA
166
167 XFRM_MSG_NEWPOLICY,
168#define XFRM_MSG_NEWPOLICY XFRM_MSG_NEWPOLICY
169 XFRM_MSG_DELPOLICY,
170#define XFRM_MSG_DELPOLICY XFRM_MSG_DELPOLICY
171 XFRM_MSG_GETPOLICY,
172#define XFRM_MSG_GETPOLICY XFRM_MSG_GETPOLICY
173
174 XFRM_MSG_ALLOCSPI,
175#define XFRM_MSG_ALLOCSPI XFRM_MSG_ALLOCSPI
176 XFRM_MSG_ACQUIRE,
177#define XFRM_MSG_ACQUIRE XFRM_MSG_ACQUIRE
178 XFRM_MSG_EXPIRE,
179#define XFRM_MSG_EXPIRE XFRM_MSG_EXPIRE
180
181 XFRM_MSG_UPDPOLICY,
182#define XFRM_MSG_UPDPOLICY XFRM_MSG_UPDPOLICY
183 XFRM_MSG_UPDSA,
184#define XFRM_MSG_UPDSA XFRM_MSG_UPDSA
185
186 XFRM_MSG_POLEXPIRE,
187#define XFRM_MSG_POLEXPIRE XFRM_MSG_POLEXPIRE
188
189 XFRM_MSG_FLUSHSA,
190#define XFRM_MSG_FLUSHSA XFRM_MSG_FLUSHSA
191 XFRM_MSG_FLUSHPOLICY,
192#define XFRM_MSG_FLUSHPOLICY XFRM_MSG_FLUSHPOLICY
193
194 XFRM_MSG_NEWAE,
195#define XFRM_MSG_NEWAE XFRM_MSG_NEWAE
196 XFRM_MSG_GETAE,
197#define XFRM_MSG_GETAE XFRM_MSG_GETAE
198
199 XFRM_MSG_REPORT,
200#define XFRM_MSG_REPORT XFRM_MSG_REPORT
201
202 XFRM_MSG_MIGRATE,
203#define XFRM_MSG_MIGRATE XFRM_MSG_MIGRATE
204
205 XFRM_MSG_NEWSADINFO,
206#define XFRM_MSG_NEWSADINFO XFRM_MSG_NEWSADINFO
207 XFRM_MSG_GETSADINFO,
208#define XFRM_MSG_GETSADINFO XFRM_MSG_GETSADINFO
209
210 XFRM_MSG_NEWSPDINFO,
211#define XFRM_MSG_NEWSPDINFO XFRM_MSG_NEWSPDINFO
212 XFRM_MSG_GETSPDINFO,
213#define XFRM_MSG_GETSPDINFO XFRM_MSG_GETSPDINFO
214
215 XFRM_MSG_MAPPING,
216#define XFRM_MSG_MAPPING XFRM_MSG_MAPPING
217 __XFRM_MSG_MAX
218};
219#define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1)
220
221#define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE)
222
223/*
224 * Generic LSM security context for comunicating to user space
225 * NOTE: Same format as sadb_x_sec_ctx
226 */
227struct xfrm_user_sec_ctx {
228 __u16 len;
229 __u16 exttype;
230 __u8 ctx_alg; /* LSMs: e.g., selinux == 1 */
231 __u8 ctx_doi;
232 __u16 ctx_len;
233};
234
235struct xfrm_user_tmpl {
236 struct xfrm_id id;
237 __u16 family;
238 xfrm_address_t saddr;
239 __u32 reqid;
240 __u8 mode;
241 __u8 share;
242 __u8 optional;
243 __u32 aalgos;
244 __u32 ealgos;
245 __u32 calgos;
246};
247
248struct xfrm_encap_tmpl {
249 __u16 encap_type;
250 __be16 encap_sport;
251 __be16 encap_dport;
252 xfrm_address_t encap_oa;
253};
254
255/* AEVENT flags */
256enum xfrm_ae_ftype_t {
257 XFRM_AE_UNSPEC,
258 XFRM_AE_RTHR=1, /* replay threshold*/
259 XFRM_AE_RVAL=2, /* replay value */
260 XFRM_AE_LVAL=4, /* lifetime value */
261 XFRM_AE_ETHR=8, /* expiry timer threshold */
262 XFRM_AE_CR=16, /* Event cause is replay update */
263 XFRM_AE_CE=32, /* Event cause is timer expiry */
264 XFRM_AE_CU=64, /* Event cause is policy update */
265 __XFRM_AE_MAX
266
267#define XFRM_AE_MAX (__XFRM_AE_MAX - 1)
268};
269
270struct xfrm_userpolicy_type {
271 __u8 type;
272 __u16 reserved1;
273 __u8 reserved2;
274};
275
276/* Netlink message attributes. */
277enum xfrm_attr_type_t {
278 XFRMA_UNSPEC,
279 XFRMA_ALG_AUTH, /* struct xfrm_algo */
280 XFRMA_ALG_CRYPT, /* struct xfrm_algo */
281 XFRMA_ALG_COMP, /* struct xfrm_algo */
282 XFRMA_ENCAP, /* struct xfrm_algo + struct xfrm_encap_tmpl */
283 XFRMA_TMPL, /* 1 or more struct xfrm_user_tmpl */
284 XFRMA_SA, /* struct xfrm_usersa_info */
285 XFRMA_POLICY, /*struct xfrm_userpolicy_info */
286 XFRMA_SEC_CTX, /* struct xfrm_sec_ctx */
287 XFRMA_LTIME_VAL,
288 XFRMA_REPLAY_VAL,
289 XFRMA_REPLAY_THRESH,
290 XFRMA_ETIMER_THRESH,
291 XFRMA_SRCADDR, /* xfrm_address_t */
292 XFRMA_COADDR, /* xfrm_address_t */
293 XFRMA_LASTUSED, /* unsigned long */
294 XFRMA_POLICY_TYPE, /* struct xfrm_userpolicy_type */
295 XFRMA_MIGRATE,
296 XFRMA_ALG_AEAD, /* struct xfrm_algo_aead */
297 XFRMA_KMADDRESS, /* struct xfrm_user_kmaddress */
298 XFRMA_ALG_AUTH_TRUNC, /* struct xfrm_algo_auth */
299 XFRMA_MARK, /* struct xfrm_mark */
300 XFRMA_TFCPAD, /* __u32 */
301 XFRMA_REPLAY_ESN_VAL, /* struct xfrm_replay_state_esn */
302 XFRMA_SA_EXTRA_FLAGS, /* __u32 */
303 XFRMA_PROTO, /* __u8 */
304 XFRMA_ADDRESS_FILTER, /* struct xfrm_address_filter */
305 XFRMA_PAD,
306 __XFRMA_MAX
307
308#define XFRMA_MAX (__XFRMA_MAX - 1)
309};
310
311struct xfrm_mark {
312 __u32 v; /* value */
313 __u32 m; /* mask */
314};
315
316enum xfrm_sadattr_type_t {
317 XFRMA_SAD_UNSPEC,
318 XFRMA_SAD_CNT,
319 XFRMA_SAD_HINFO,
320 __XFRMA_SAD_MAX
321
322#define XFRMA_SAD_MAX (__XFRMA_SAD_MAX - 1)
323};
324
325struct xfrmu_sadhinfo {
326 __u32 sadhcnt; /* current hash bkts */
327 __u32 sadhmcnt; /* max allowed hash bkts */
328};
329
330enum xfrm_spdattr_type_t {
331 XFRMA_SPD_UNSPEC,
332 XFRMA_SPD_INFO,
333 XFRMA_SPD_HINFO,
334 XFRMA_SPD_IPV4_HTHRESH,
335 XFRMA_SPD_IPV6_HTHRESH,
336 __XFRMA_SPD_MAX
337
338#define XFRMA_SPD_MAX (__XFRMA_SPD_MAX - 1)
339};
340
341struct xfrmu_spdinfo {
342 __u32 incnt;
343 __u32 outcnt;
344 __u32 fwdcnt;
345 __u32 inscnt;
346 __u32 outscnt;
347 __u32 fwdscnt;
348};
349
350struct xfrmu_spdhinfo {
351 __u32 spdhcnt;
352 __u32 spdhmcnt;
353};
354
355struct xfrmu_spdhthresh {
356 __u8 lbits;
357 __u8 rbits;
358};
359
360struct xfrm_usersa_info {
361 struct xfrm_selector sel;
362 struct xfrm_id id;
363 xfrm_address_t saddr;
364 struct xfrm_lifetime_cfg lft;
365 struct xfrm_lifetime_cur curlft;
366 struct xfrm_stats stats;
367 __u32 seq;
368 __u32 reqid;
369 __u16 family;
370 __u8 mode; /* XFRM_MODE_xxx */
371 __u8 replay_window;
372 __u8 flags;
373#define XFRM_STATE_NOECN 1
374#define XFRM_STATE_DECAP_DSCP 2
375#define XFRM_STATE_NOPMTUDISC 4
376#define XFRM_STATE_WILDRECV 8
377#define XFRM_STATE_ICMP 16
378#define XFRM_STATE_AF_UNSPEC 32
379#define XFRM_STATE_ALIGN4 64
380#define XFRM_STATE_ESN 128
381};
382
383#define XFRM_SA_XFLAG_DONT_ENCAP_DSCP 1
384
385struct xfrm_usersa_id {
386 xfrm_address_t daddr;
387 __be32 spi;
388 __u16 family;
389 __u8 proto;
390};
391
392struct xfrm_aevent_id {
393 struct xfrm_usersa_id sa_id;
394 xfrm_address_t saddr;
395 __u32 flags;
396 __u32 reqid;
397};
398
399struct xfrm_userspi_info {
400 struct xfrm_usersa_info info;
401 __u32 min;
402 __u32 max;
403};
404
405struct xfrm_userpolicy_info {
406 struct xfrm_selector sel;
407 struct xfrm_lifetime_cfg lft;
408 struct xfrm_lifetime_cur curlft;
409 __u32 priority;
410 __u32 index;
411 __u8 dir;
412 __u8 action;
413#define XFRM_POLICY_ALLOW 0
414#define XFRM_POLICY_BLOCK 1
415 __u8 flags;
416#define XFRM_POLICY_LOCALOK 1 /* Allow user to override global policy */
417 /* Automatically expand selector to include matching ICMP payloads. */
418#define XFRM_POLICY_ICMP 2
419 __u8 share;
420};
421
422struct xfrm_userpolicy_id {
423 struct xfrm_selector sel;
424 __u32 index;
425 __u8 dir;
426};
427
428struct xfrm_user_acquire {
429 struct xfrm_id id;
430 xfrm_address_t saddr;
431 struct xfrm_selector sel;
432 struct xfrm_userpolicy_info policy;
433 __u32 aalgos;
434 __u32 ealgos;
435 __u32 calgos;
436 __u32 seq;
437};
438
439struct xfrm_user_expire {
440 struct xfrm_usersa_info state;
441 __u8 hard;
442};
443
444struct xfrm_user_polexpire {
445 struct xfrm_userpolicy_info pol;
446 __u8 hard;
447};
448
449struct xfrm_usersa_flush {
450 __u8 proto;
451};
452
453struct xfrm_user_report {
454 __u8 proto;
455 struct xfrm_selector sel;
456};
457
458/* Used by MIGRATE to pass addresses IKE should use to perform
459 * SA negotiation with the peer */
460struct xfrm_user_kmaddress {
461 xfrm_address_t local;
462 xfrm_address_t remote;
463 __u32 reserved;
464 __u16 family;
465};
466
467struct xfrm_user_migrate {
468 xfrm_address_t old_daddr;
469 xfrm_address_t old_saddr;
470 xfrm_address_t new_daddr;
471 xfrm_address_t new_saddr;
472 __u8 proto;
473 __u8 mode;
474 __u16 reserved;
475 __u32 reqid;
476 __u16 old_family;
477 __u16 new_family;
478};
479
480struct xfrm_user_mapping {
481 struct xfrm_usersa_id id;
482 __u32 reqid;
483 xfrm_address_t old_saddr;
484 xfrm_address_t new_saddr;
485 __be16 old_sport;
486 __be16 new_sport;
487};
488
489struct xfrm_address_filter {
490 xfrm_address_t saddr;
491 xfrm_address_t daddr;
492 __u16 family;
493 __u8 splen;
494 __u8 dplen;
495};
496
497#ifndef __KERNEL__
498/* backwards compatibility for userspace */
499#define XFRMGRP_ACQUIRE 1
500#define XFRMGRP_EXPIRE 2
501#define XFRMGRP_SA 4
502#define XFRMGRP_POLICY 8
503#define XFRMGRP_REPORT 0x20
504#endif
505
506enum xfrm_nlgroups {
507 XFRMNLGRP_NONE,
508#define XFRMNLGRP_NONE XFRMNLGRP_NONE
509 XFRMNLGRP_ACQUIRE,
510#define XFRMNLGRP_ACQUIRE XFRMNLGRP_ACQUIRE
511 XFRMNLGRP_EXPIRE,
512#define XFRMNLGRP_EXPIRE XFRMNLGRP_EXPIRE
513 XFRMNLGRP_SA,
514#define XFRMNLGRP_SA XFRMNLGRP_SA
515 XFRMNLGRP_POLICY,
516#define XFRMNLGRP_POLICY XFRMNLGRP_POLICY
517 XFRMNLGRP_AEVENTS,
518#define XFRMNLGRP_AEVENTS XFRMNLGRP_AEVENTS
519 XFRMNLGRP_REPORT,
520#define XFRMNLGRP_REPORT XFRMNLGRP_REPORT
521 XFRMNLGRP_MIGRATE,
522#define XFRMNLGRP_MIGRATE XFRMNLGRP_MIGRATE
523 XFRMNLGRP_MAPPING,
524#define XFRMNLGRP_MAPPING XFRMNLGRP_MAPPING
525 __XFRMNLGRP_MAX
526};
527#define XFRMNLGRP_MAX (__XFRMNLGRP_MAX - 1)
528
529#endif /* _LINUX_XFRM_H */