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 #define XFRMA_REPLAY_ESN_MAX 4096
89 struct xfrm_replay_state_esn {
101 unsigned int alg_key_len; /* in bits */
105 struct xfrm_algo_auth {
107 unsigned int alg_key_len; /* in bits */
108 unsigned int alg_trunc_len; /* in bits */
112 struct xfrm_algo_aead {
114 unsigned int alg_key_len; /* in bits */
115 unsigned int alg_icv_len; /* in bits */
122 __u32 integrity_failed;
126 XFRM_POLICY_TYPE_MAIN = 0,
127 XFRM_POLICY_TYPE_SUB = 1,
128 XFRM_POLICY_TYPE_MAX = 2,
129 XFRM_POLICY_TYPE_ANY = 255
136 XFRM_POLICY_MASK = 3,
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 */
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
154 /* Netlink configuration messages. */
156 XFRM_MSG_BASE = 0x10,
158 XFRM_MSG_NEWSA = 0x10,
159 #define XFRM_MSG_NEWSA XFRM_MSG_NEWSA
161 #define XFRM_MSG_DELSA XFRM_MSG_DELSA
163 #define XFRM_MSG_GETSA XFRM_MSG_GETSA
166 #define XFRM_MSG_NEWPOLICY XFRM_MSG_NEWPOLICY
168 #define XFRM_MSG_DELPOLICY XFRM_MSG_DELPOLICY
170 #define XFRM_MSG_GETPOLICY XFRM_MSG_GETPOLICY
173 #define XFRM_MSG_ALLOCSPI XFRM_MSG_ALLOCSPI
175 #define XFRM_MSG_ACQUIRE XFRM_MSG_ACQUIRE
177 #define XFRM_MSG_EXPIRE XFRM_MSG_EXPIRE
180 #define XFRM_MSG_UPDPOLICY XFRM_MSG_UPDPOLICY
182 #define XFRM_MSG_UPDSA XFRM_MSG_UPDSA
185 #define XFRM_MSG_POLEXPIRE XFRM_MSG_POLEXPIRE
188 #define XFRM_MSG_FLUSHSA XFRM_MSG_FLUSHSA
189 XFRM_MSG_FLUSHPOLICY,
190 #define XFRM_MSG_FLUSHPOLICY XFRM_MSG_FLUSHPOLICY
193 #define XFRM_MSG_NEWAE XFRM_MSG_NEWAE
195 #define XFRM_MSG_GETAE XFRM_MSG_GETAE
198 #define XFRM_MSG_REPORT XFRM_MSG_REPORT
201 #define XFRM_MSG_MIGRATE XFRM_MSG_MIGRATE
204 #define XFRM_MSG_NEWSADINFO XFRM_MSG_NEWSADINFO
206 #define XFRM_MSG_GETSADINFO XFRM_MSG_GETSADINFO
209 #define XFRM_MSG_NEWSPDINFO XFRM_MSG_NEWSPDINFO
211 #define XFRM_MSG_GETSPDINFO XFRM_MSG_GETSPDINFO
214 #define XFRM_MSG_MAPPING XFRM_MSG_MAPPING
217 #define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1)
219 #define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE)
222 * Generic LSM security context for comunicating to user space
223 * NOTE: Same format as sadb_x_sec_ctx
225 struct xfrm_user_sec_ctx {
228 __u8 ctx_alg; /* LSMs: e.g., selinux == 1 */
233 struct xfrm_user_tmpl {
236 xfrm_address_t saddr;
246 struct xfrm_encap_tmpl {
250 xfrm_address_t encap_oa;
254 enum xfrm_ae_ftype_t {
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 */
265 #define XFRM_AE_MAX (__XFRM_AE_MAX - 1)
268 struct xfrm_userpolicy_type {
274 /* Netlink message attributes. */
275 enum xfrm_attr_type_t {
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 */
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 */
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 */
302 #define XFRMA_MAX (__XFRMA_MAX - 1)
310 enum xfrm_sadattr_type_t {
316 #define XFRMA_SAD_MAX (__XFRMA_SAD_MAX - 1)
319 struct xfrmu_sadhinfo {
320 __u32 sadhcnt; /* current hash bkts */
321 __u32 sadhmcnt; /* max allowed hash bkts */
324 enum xfrm_spdattr_type_t {
330 #define XFRMA_SPD_MAX (__XFRMA_SPD_MAX - 1)
333 struct xfrmu_spdinfo {
342 struct xfrmu_spdhinfo {
347 struct xfrm_usersa_info {
348 struct xfrm_selector sel;
350 xfrm_address_t saddr;
351 struct xfrm_lifetime_cfg lft;
352 struct xfrm_lifetime_cur curlft;
353 struct xfrm_stats stats;
357 __u8 mode; /* XFRM_MODE_xxx */
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
370 struct xfrm_usersa_id {
371 xfrm_address_t daddr;
377 struct xfrm_aevent_id {
378 struct xfrm_usersa_id sa_id;
379 xfrm_address_t saddr;
384 struct xfrm_userspi_info {
385 struct xfrm_usersa_info info;
390 struct xfrm_userpolicy_info {
391 struct xfrm_selector sel;
392 struct xfrm_lifetime_cfg lft;
393 struct xfrm_lifetime_cur curlft;
398 #define XFRM_POLICY_ALLOW 0
399 #define XFRM_POLICY_BLOCK 1
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
407 struct xfrm_userpolicy_id {
408 struct xfrm_selector sel;
413 struct xfrm_user_acquire {
415 xfrm_address_t saddr;
416 struct xfrm_selector sel;
417 struct xfrm_userpolicy_info policy;
424 struct xfrm_user_expire {
425 struct xfrm_usersa_info state;
429 struct xfrm_user_polexpire {
430 struct xfrm_userpolicy_info pol;
434 struct xfrm_usersa_flush {
438 struct xfrm_user_report {
440 struct xfrm_selector sel;
443 /* Used by MIGRATE to pass addresses IKE should use to perform
444 * SA negotiation with the peer */
445 struct xfrm_user_kmaddress {
446 xfrm_address_t local;
447 xfrm_address_t remote;
452 struct 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;
465 struct xfrm_user_mapping {
466 struct xfrm_usersa_id id;
468 xfrm_address_t old_saddr;
469 xfrm_address_t new_saddr;
475 /* backwards compatibility for userspace */
476 #define XFRMGRP_ACQUIRE 1
477 #define XFRMGRP_EXPIRE 2
479 #define XFRMGRP_POLICY 8
480 #define XFRMGRP_REPORT 0x20
485 #define XFRMNLGRP_NONE XFRMNLGRP_NONE
487 #define XFRMNLGRP_ACQUIRE XFRMNLGRP_ACQUIRE
489 #define XFRMNLGRP_EXPIRE XFRMNLGRP_EXPIRE
491 #define XFRMNLGRP_SA XFRMNLGRP_SA
493 #define XFRMNLGRP_POLICY XFRMNLGRP_POLICY
495 #define XFRMNLGRP_AEVENTS XFRMNLGRP_AEVENTS
497 #define XFRMNLGRP_REPORT XFRMNLGRP_REPORT
499 #define XFRMNLGRP_MIGRATE XFRMNLGRP_MIGRATE
501 #define XFRMNLGRP_MAPPING XFRMNLGRP_MAPPING
504 #define XFRMNLGRP_MAX (__XFRMNLGRP_MAX - 1)
506 #endif /* _LINUX_XFRM_H */