4 #include <linux/types.h>
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.
10 /* Structure to encapsulate addresses. I do not want to use
11 * "standard" structure. My apologies.
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.
36 /* Security Context Domains of Interpretation */
37 #define XFRM_SC_DOI_RESERVED 0
38 #define XFRM_SC_DOI_LSM 1
40 /* Security Context Algorithms */
41 #define XFRM_SC_ALG_RESERVED 0
42 #define XFRM_SC_ALG_SELINUX 1
44 /* Selector, used as selector both on policy rules (SPD) and SAs. */
46 struct xfrm_selector {
58 __kernel_uid32_t user;
61 #define XFRM_INF (~(__u64)0)
63 struct 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;
74 struct xfrm_lifetime_cur {
81 struct xfrm_replay_state {
87 struct xfrm_replay_state_esn {
99 unsigned int alg_key_len; /* in bits */
103 struct xfrm_algo_auth {
105 unsigned int alg_key_len; /* in bits */
106 unsigned int alg_trunc_len; /* in bits */
110 struct xfrm_algo_aead {
112 unsigned int alg_key_len; /* in bits */
113 unsigned int alg_icv_len; /* in bits */
120 __u32 integrity_failed;
124 XFRM_POLICY_TYPE_MAIN = 0,
125 XFRM_POLICY_TYPE_SUB = 1,
126 XFRM_POLICY_TYPE_MAX = 2,
127 XFRM_POLICY_TYPE_ANY = 255
134 XFRM_POLICY_MASK = 3,
139 XFRM_SHARE_ANY, /* No limitations */
140 XFRM_SHARE_SESSION, /* For this session only */
141 XFRM_SHARE_USER, /* For this user only */
142 XFRM_SHARE_UNIQUE /* Use once */
145 #define XFRM_MODE_TRANSPORT 0
146 #define XFRM_MODE_TUNNEL 1
147 #define XFRM_MODE_ROUTEOPTIMIZATION 2
148 #define XFRM_MODE_IN_TRIGGER 3
149 #define XFRM_MODE_BEET 4
150 #define XFRM_MODE_MAX 5
152 /* Netlink configuration messages. */
154 XFRM_MSG_BASE = 0x10,
156 XFRM_MSG_NEWSA = 0x10,
157 #define XFRM_MSG_NEWSA XFRM_MSG_NEWSA
159 #define XFRM_MSG_DELSA XFRM_MSG_DELSA
161 #define XFRM_MSG_GETSA XFRM_MSG_GETSA
164 #define XFRM_MSG_NEWPOLICY XFRM_MSG_NEWPOLICY
166 #define XFRM_MSG_DELPOLICY XFRM_MSG_DELPOLICY
168 #define XFRM_MSG_GETPOLICY XFRM_MSG_GETPOLICY
171 #define XFRM_MSG_ALLOCSPI XFRM_MSG_ALLOCSPI
173 #define XFRM_MSG_ACQUIRE XFRM_MSG_ACQUIRE
175 #define XFRM_MSG_EXPIRE XFRM_MSG_EXPIRE
178 #define XFRM_MSG_UPDPOLICY XFRM_MSG_UPDPOLICY
180 #define XFRM_MSG_UPDSA XFRM_MSG_UPDSA
183 #define XFRM_MSG_POLEXPIRE XFRM_MSG_POLEXPIRE
186 #define XFRM_MSG_FLUSHSA XFRM_MSG_FLUSHSA
187 XFRM_MSG_FLUSHPOLICY,
188 #define XFRM_MSG_FLUSHPOLICY XFRM_MSG_FLUSHPOLICY
191 #define XFRM_MSG_NEWAE XFRM_MSG_NEWAE
193 #define XFRM_MSG_GETAE XFRM_MSG_GETAE
196 #define XFRM_MSG_REPORT XFRM_MSG_REPORT
199 #define XFRM_MSG_MIGRATE XFRM_MSG_MIGRATE
202 #define XFRM_MSG_NEWSADINFO XFRM_MSG_NEWSADINFO
204 #define XFRM_MSG_GETSADINFO XFRM_MSG_GETSADINFO
207 #define XFRM_MSG_NEWSPDINFO XFRM_MSG_NEWSPDINFO
209 #define XFRM_MSG_GETSPDINFO XFRM_MSG_GETSPDINFO
212 #define XFRM_MSG_MAPPING XFRM_MSG_MAPPING
215 #define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1)
217 #define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE)
220 * Generic LSM security context for comunicating to user space
221 * NOTE: Same format as sadb_x_sec_ctx
223 struct xfrm_user_sec_ctx {
226 __u8 ctx_alg; /* LSMs: e.g., selinux == 1 */
231 struct xfrm_user_tmpl {
234 xfrm_address_t saddr;
244 struct xfrm_encap_tmpl {
248 xfrm_address_t encap_oa;
252 enum xfrm_ae_ftype_t {
254 XFRM_AE_RTHR=1, /* replay threshold*/
255 XFRM_AE_RVAL=2, /* replay value */
256 XFRM_AE_LVAL=4, /* lifetime value */
257 XFRM_AE_ETHR=8, /* expiry timer threshold */
258 XFRM_AE_CR=16, /* Event cause is replay update */
259 XFRM_AE_CE=32, /* Event cause is timer expiry */
260 XFRM_AE_CU=64, /* Event cause is policy update */
263 #define XFRM_AE_MAX (__XFRM_AE_MAX - 1)
266 struct xfrm_userpolicy_type {
272 /* Netlink message attributes. */
273 enum xfrm_attr_type_t {
275 XFRMA_ALG_AUTH, /* struct xfrm_algo */
276 XFRMA_ALG_CRYPT, /* struct xfrm_algo */
277 XFRMA_ALG_COMP, /* struct xfrm_algo */
278 XFRMA_ENCAP, /* struct xfrm_algo + struct xfrm_encap_tmpl */
279 XFRMA_TMPL, /* 1 or more struct xfrm_user_tmpl */
280 XFRMA_SA, /* struct xfrm_usersa_info */
281 XFRMA_POLICY, /*struct xfrm_userpolicy_info */
282 XFRMA_SEC_CTX, /* struct xfrm_sec_ctx */
287 XFRMA_SRCADDR, /* xfrm_address_t */
288 XFRMA_COADDR, /* xfrm_address_t */
289 XFRMA_LASTUSED, /* unsigned long */
290 XFRMA_POLICY_TYPE, /* struct xfrm_userpolicy_type */
292 XFRMA_ALG_AEAD, /* struct xfrm_algo_aead */
293 XFRMA_KMADDRESS, /* struct xfrm_user_kmaddress */
294 XFRMA_ALG_AUTH_TRUNC, /* struct xfrm_algo_auth */
295 XFRMA_MARK, /* struct xfrm_mark */
296 XFRMA_TFCPAD, /* __u32 */
297 XFRMA_REPLAY_ESN_VAL, /* struct xfrm_replay_esn */
300 #define XFRMA_MAX (__XFRMA_MAX - 1)
308 enum xfrm_sadattr_type_t {
314 #define XFRMA_SAD_MAX (__XFRMA_SAD_MAX - 1)
317 struct xfrmu_sadhinfo {
318 __u32 sadhcnt; /* current hash bkts */
319 __u32 sadhmcnt; /* max allowed hash bkts */
322 enum xfrm_spdattr_type_t {
328 #define XFRMA_SPD_MAX (__XFRMA_SPD_MAX - 1)
331 struct xfrmu_spdinfo {
340 struct xfrmu_spdhinfo {
345 struct xfrm_usersa_info {
346 struct xfrm_selector sel;
348 xfrm_address_t saddr;
349 struct xfrm_lifetime_cfg lft;
350 struct xfrm_lifetime_cur curlft;
351 struct xfrm_stats stats;
355 __u8 mode; /* XFRM_MODE_xxx */
358 #define XFRM_STATE_NOECN 1
359 #define XFRM_STATE_DECAP_DSCP 2
360 #define XFRM_STATE_NOPMTUDISC 4
361 #define XFRM_STATE_WILDRECV 8
362 #define XFRM_STATE_ICMP 16
363 #define XFRM_STATE_AF_UNSPEC 32
364 #define XFRM_STATE_ALIGN4 64
365 #define XFRM_STATE_ESN 128
368 struct xfrm_usersa_id {
369 xfrm_address_t daddr;
375 struct xfrm_aevent_id {
376 struct xfrm_usersa_id sa_id;
377 xfrm_address_t saddr;
382 struct xfrm_userspi_info {
383 struct xfrm_usersa_info info;
388 struct xfrm_userpolicy_info {
389 struct xfrm_selector sel;
390 struct xfrm_lifetime_cfg lft;
391 struct xfrm_lifetime_cur curlft;
396 #define XFRM_POLICY_ALLOW 0
397 #define XFRM_POLICY_BLOCK 1
399 #define XFRM_POLICY_LOCALOK 1 /* Allow user to override global policy */
400 /* Automatically expand selector to include matching ICMP payloads. */
401 #define XFRM_POLICY_ICMP 2
405 struct xfrm_userpolicy_id {
406 struct xfrm_selector sel;
411 struct xfrm_user_acquire {
413 xfrm_address_t saddr;
414 struct xfrm_selector sel;
415 struct xfrm_userpolicy_info policy;
422 struct xfrm_user_expire {
423 struct xfrm_usersa_info state;
427 struct xfrm_user_polexpire {
428 struct xfrm_userpolicy_info pol;
432 struct xfrm_usersa_flush {
436 struct xfrm_user_report {
438 struct xfrm_selector sel;
441 /* Used by MIGRATE to pass addresses IKE should use to perform
442 * SA negotiation with the peer */
443 struct xfrm_user_kmaddress {
444 xfrm_address_t local;
445 xfrm_address_t remote;
450 struct xfrm_user_migrate {
451 xfrm_address_t old_daddr;
452 xfrm_address_t old_saddr;
453 xfrm_address_t new_daddr;
454 xfrm_address_t new_saddr;
463 struct xfrm_user_mapping {
464 struct xfrm_usersa_id id;
466 xfrm_address_t old_saddr;
467 xfrm_address_t new_saddr;
473 /* backwards compatibility for userspace */
474 #define XFRMGRP_ACQUIRE 1
475 #define XFRMGRP_EXPIRE 2
477 #define XFRMGRP_POLICY 8
478 #define XFRMGRP_REPORT 0x20
483 #define XFRMNLGRP_NONE XFRMNLGRP_NONE
485 #define XFRMNLGRP_ACQUIRE XFRMNLGRP_ACQUIRE
487 #define XFRMNLGRP_EXPIRE XFRMNLGRP_EXPIRE
489 #define XFRMNLGRP_SA XFRMNLGRP_SA
491 #define XFRMNLGRP_POLICY XFRMNLGRP_POLICY
493 #define XFRMNLGRP_AEVENTS XFRMNLGRP_AEVENTS
495 #define XFRMNLGRP_REPORT XFRMNLGRP_REPORT
497 #define XFRMNLGRP_MIGRATE XFRMNLGRP_MIGRATE
499 #define XFRMNLGRP_MAPPING XFRMNLGRP_MAPPING
502 #define XFRMNLGRP_MAX (__XFRMNLGRP_MAX - 1)
504 #endif /* _LINUX_XFRM_H */