]> git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blame - include/linux/xfrm.h
cpumask: reduce stack usage in SD_x_INIT initializers
[mirror_ubuntu-bionic-kernel.git] / include / linux / xfrm.h
CommitLineData
1da177e4
LT
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{
737b5761
AV
15 __be32 a4;
16 __be32 a6[4];
1da177e4
LT
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;
e037c39b 26 __be32 spi;
1da177e4
LT
27 __u8 proto;
28};
29
df71837d
TJ
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
1da177e4
LT
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;
8f83f23e
AV
52 __be16 dport;
53 __be16 dport_mask;
54 __be16 sport;
55 __be16 sport_mask;
1da177e4
LT
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 {
3f4afb64 94 char alg_name[64];
ba749ae9 95 unsigned int alg_key_len; /* in bits */
3f4afb64 96 char alg_key[0];
1da177e4
LT
97};
98
1a6509d9
HX
99struct xfrm_algo_aead {
100 char alg_name[64];
101 int alg_key_len; /* in bits */
102 int alg_icv_len; /* in bits */
103 char alg_key[0];
104};
105
1da177e4
LT
106struct xfrm_stats {
107 __u32 replay_window;
108 __u32 replay;
109 __u32 integrity_failed;
110};
111
4e81bb83
MN
112enum
113{
114 XFRM_POLICY_TYPE_MAIN = 0,
115 XFRM_POLICY_TYPE_SUB = 1,
4c563f76
TT
116 XFRM_POLICY_TYPE_MAX = 2,
117 XFRM_POLICY_TYPE_ANY = 255
4e81bb83
MN
118};
119
1da177e4
LT
120enum
121{
122 XFRM_POLICY_IN = 0,
123 XFRM_POLICY_OUT = 1,
124 XFRM_POLICY_FWD = 2,
d5422efe 125 XFRM_POLICY_MASK = 3,
1da177e4
LT
126 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
b59f45d0
HX
137#define XFRM_MODE_TRANSPORT 0
138#define XFRM_MODE_TUNNEL 1
7e49e6de
MN
139#define XFRM_MODE_ROUTEOPTIMIZATION 2
140#define XFRM_MODE_IN_TRIGGER 3
0a69452c
DB
141#define XFRM_MODE_BEET 4
142#define XFRM_MODE_MAX 5
b59f45d0 143
1da177e4
LT
144/* 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
f8cd5488
JHS
182 XFRM_MSG_NEWAE,
183#define XFRM_MSG_NEWAE XFRM_MSG_NEWAE
184 XFRM_MSG_GETAE,
185#define XFRM_MSG_GETAE XFRM_MSG_GETAE
97a64b45
MN
186
187 XFRM_MSG_REPORT,
188#define XFRM_MSG_REPORT XFRM_MSG_REPORT
189
80c9abaa
SS
190 XFRM_MSG_MIGRATE,
191#define XFRM_MSG_MIGRATE XFRM_MSG_MIGRATE
192
28d8909b
JHS
193 XFRM_MSG_NEWSADINFO,
194#define XFRM_MSG_NEWSADINFO XFRM_MSG_NEWSADINFO
195 XFRM_MSG_GETSADINFO,
196#define XFRM_MSG_GETSADINFO XFRM_MSG_GETSADINFO
ecfd6b18
JHS
197
198 XFRM_MSG_NEWSPDINFO,
199#define XFRM_MSG_NEWSPDINFO XFRM_MSG_NEWSPDINFO
200 XFRM_MSG_GETSPDINFO,
201#define XFRM_MSG_GETSPDINFO XFRM_MSG_GETSPDINFO
526bdb80 202 __XFRM_MSG_MAX
1da177e4 203};
526bdb80 204#define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1)
1da177e4 205
492b558b
TG
206#define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE)
207
df71837d
TJ
208/*
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
1da177e4
LT
220struct 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;
d5a0a1e3
AV
235 __be16 encap_sport;
236 __be16 encap_dport;
1da177e4
LT
237 xfrm_address_t encap_oa;
238};
239
f8cd5488
JHS
240/* 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
f7b6983f
MN
255struct xfrm_userpolicy_type {
256 __u8 type;
257 __u16 reserved1;
258 __u8 reserved2;
259};
260
1da177e4
LT
261/* 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 */
0603eac0
HX
269 XFRMA_SA,
270 XFRMA_POLICY,
df71837d 271 XFRMA_SEC_CTX, /* struct xfrm_sec_ctx */
f8cd5488
JHS
272 XFRMA_LTIME_VAL,
273 XFRMA_REPLAY_VAL,
274 XFRMA_REPLAY_THRESH,
275 XFRMA_ETIMER_THRESH,
eb2971b6 276 XFRMA_SRCADDR, /* xfrm_address_t */
060f02a3 277 XFRMA_COADDR, /* xfrm_address_t */
9afaca05 278 XFRMA_LASTUSED,
f7b6983f 279 XFRMA_POLICY_TYPE, /* struct xfrm_userpolicy_type */
80c9abaa 280 XFRMA_MIGRATE,
1a6509d9 281 XFRMA_ALG_AEAD, /* struct xfrm_algo_aead */
1da177e4
LT
282 __XFRMA_MAX
283
284#define XFRMA_MAX (__XFRMA_MAX - 1)
285};
286
28d8909b
JHS
287enum xfrm_sadattr_type_t {
288 XFRMA_SAD_UNSPEC,
af11e316
JHS
289 XFRMA_SAD_CNT,
290 XFRMA_SAD_HINFO,
28d8909b
JHS
291 __XFRMA_SAD_MAX
292
293#define XFRMA_SAD_MAX (__XFRMA_SAD_MAX - 1)
294};
295
af11e316
JHS
296struct xfrmu_sadhinfo {
297 __u32 sadhcnt; /* current hash bkts */
298 __u32 sadhmcnt; /* max allowed hash bkts */
299};
300
ecfd6b18
JHS
301enum xfrm_spdattr_type_t {
302 XFRMA_SPD_UNSPEC,
5a6d3416
JHS
303 XFRMA_SPD_INFO,
304 XFRMA_SPD_HINFO,
ecfd6b18
JHS
305 __XFRMA_SPD_MAX
306
307#define XFRMA_SPD_MAX (__XFRMA_SPD_MAX - 1)
308};
309
5a6d3416
JHS
310struct 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
1da177e4
LT
324struct 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;
7e49e6de 334 __u8 mode; /* XFRM_MODE_xxx */
1da177e4
LT
335 __u8 replay_window;
336 __u8 flags;
337#define XFRM_STATE_NOECN 1
338#define XFRM_STATE_DECAP_DSCP 2
dd87147e 339#define XFRM_STATE_NOPMTUDISC 4
fbd9a5b4 340#define XFRM_STATE_WILDRECV 8
8b7817f3 341#define XFRM_STATE_ICMP 16
1da177e4
LT
342};
343
344struct xfrm_usersa_id {
345 xfrm_address_t daddr;
9916ecb0 346 __be32 spi;
1da177e4
LT
347 __u16 family;
348 __u8 proto;
349};
350
f8cd5488 351struct xfrm_aevent_id {
f8cd5488 352 struct xfrm_usersa_id sa_id;
2b5f6dcc 353 xfrm_address_t saddr;
4bf07ef3 354 __u32 flags;
2b5f6dcc 355 __u32 reqid;
f8cd5488
JHS
356};
357
1da177e4
LT
358struct xfrm_userspi_info {
359 struct xfrm_usersa_info info;
360 __u32 min;
361 __u32 max;
362};
363
364struct xfrm_userpolicy_info {
365 struct xfrm_selector sel;
366 struct xfrm_lifetime_cfg lft;
367 struct xfrm_lifetime_cur curlft;
368 __u32 priority;
369 __u32 index;
370 __u8 dir;
371 __u8 action;
372#define XFRM_POLICY_ALLOW 0
373#define XFRM_POLICY_BLOCK 1
374 __u8 flags;
375#define XFRM_POLICY_LOCALOK 1 /* Allow user to override global policy */
8b7817f3
HX
376 /* Automatically expand selector to include matching ICMP payloads. */
377#define XFRM_POLICY_ICMP 2
1da177e4
LT
378 __u8 share;
379};
380
381struct xfrm_userpolicy_id {
382 struct xfrm_selector sel;
383 __u32 index;
384 __u8 dir;
385};
386
387struct xfrm_user_acquire {
388 struct xfrm_id id;
389 xfrm_address_t saddr;
390 struct xfrm_selector sel;
391 struct xfrm_userpolicy_info policy;
392 __u32 aalgos;
393 __u32 ealgos;
394 __u32 calgos;
395 __u32 seq;
396};
397
398struct xfrm_user_expire {
399 struct xfrm_usersa_info state;
400 __u8 hard;
401};
402
403struct xfrm_user_polexpire {
404 struct xfrm_userpolicy_info pol;
405 __u8 hard;
406};
407
408struct xfrm_usersa_flush {
409 __u8 proto;
410};
411
97a64b45
MN
412struct xfrm_user_report {
413 __u8 proto;
414 struct xfrm_selector sel;
415};
416
80c9abaa
SS
417struct xfrm_user_migrate {
418 xfrm_address_t old_daddr;
419 xfrm_address_t old_saddr;
420 xfrm_address_t new_daddr;
421 xfrm_address_t new_saddr;
422 __u8 proto;
423 __u8 mode;
424 __u16 reserved;
425 __u32 reqid;
426 __u16 old_family;
427 __u16 new_family;
428};
429
ac6d439d
PM
430#ifndef __KERNEL__
431/* backwards compatibility for userspace */
1da177e4
LT
432#define XFRMGRP_ACQUIRE 1
433#define XFRMGRP_EXPIRE 2
26b15dad
JHS
434#define XFRMGRP_SA 4
435#define XFRMGRP_POLICY 8
93366c53 436#define XFRMGRP_REPORT 0x20
ac6d439d
PM
437#endif
438
439enum xfrm_nlgroups {
440 XFRMNLGRP_NONE,
441#define XFRMNLGRP_NONE XFRMNLGRP_NONE
442 XFRMNLGRP_ACQUIRE,
443#define XFRMNLGRP_ACQUIRE XFRMNLGRP_ACQUIRE
444 XFRMNLGRP_EXPIRE,
445#define XFRMNLGRP_EXPIRE XFRMNLGRP_EXPIRE
446 XFRMNLGRP_SA,
447#define XFRMNLGRP_SA XFRMNLGRP_SA
448 XFRMNLGRP_POLICY,
449#define XFRMNLGRP_POLICY XFRMNLGRP_POLICY
f8cd5488
JHS
450 XFRMNLGRP_AEVENTS,
451#define XFRMNLGRP_AEVENTS XFRMNLGRP_AEVENTS
97a64b45
MN
452 XFRMNLGRP_REPORT,
453#define XFRMNLGRP_REPORT XFRMNLGRP_REPORT
80c9abaa
SS
454 XFRMNLGRP_MIGRATE,
455#define XFRMNLGRP_MIGRATE XFRMNLGRP_MIGRATE
ac6d439d
PM
456 __XFRMNLGRP_MAX
457};
458#define XFRMNLGRP_MAX (__XFRMNLGRP_MAX - 1)
1da177e4
LT
459
460#endif /* _LINUX_XFRM_H */