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 {
89 unsigned int alg_key_len; /* in bits */
93 struct xfrm_algo_auth {
95 unsigned int alg_key_len; /* in bits */
96 unsigned int alg_trunc_len; /* in bits */
100 struct xfrm_algo_aead {
102 unsigned int alg_key_len; /* in bits */
103 unsigned int alg_icv_len; /* in bits */
110 __u32 integrity_failed;
114 XFRM_POLICY_TYPE_MAIN = 0,
115 XFRM_POLICY_TYPE_SUB = 1,
116 XFRM_POLICY_TYPE_MAX = 2,
117 XFRM_POLICY_TYPE_ANY = 255
124 XFRM_POLICY_MASK = 3,
129 XFRM_SHARE_ANY, /* No limitations */
130 XFRM_SHARE_SESSION, /* For this session only */
131 XFRM_SHARE_USER, /* For this user only */
132 XFRM_SHARE_UNIQUE /* Use once */
135 #define XFRM_MODE_TRANSPORT 0
136 #define XFRM_MODE_TUNNEL 1
137 #define XFRM_MODE_ROUTEOPTIMIZATION 2
138 #define XFRM_MODE_IN_TRIGGER 3
139 #define XFRM_MODE_BEET 4
140 #define XFRM_MODE_MAX 5
142 /* Netlink configuration messages. */
144 XFRM_MSG_BASE = 0x10,
146 XFRM_MSG_NEWSA = 0x10,
147 #define XFRM_MSG_NEWSA XFRM_MSG_NEWSA
149 #define XFRM_MSG_DELSA XFRM_MSG_DELSA
151 #define XFRM_MSG_GETSA XFRM_MSG_GETSA
154 #define XFRM_MSG_NEWPOLICY XFRM_MSG_NEWPOLICY
156 #define XFRM_MSG_DELPOLICY XFRM_MSG_DELPOLICY
158 #define XFRM_MSG_GETPOLICY XFRM_MSG_GETPOLICY
161 #define XFRM_MSG_ALLOCSPI XFRM_MSG_ALLOCSPI
163 #define XFRM_MSG_ACQUIRE XFRM_MSG_ACQUIRE
165 #define XFRM_MSG_EXPIRE XFRM_MSG_EXPIRE
168 #define XFRM_MSG_UPDPOLICY XFRM_MSG_UPDPOLICY
170 #define XFRM_MSG_UPDSA XFRM_MSG_UPDSA
173 #define XFRM_MSG_POLEXPIRE XFRM_MSG_POLEXPIRE
176 #define XFRM_MSG_FLUSHSA XFRM_MSG_FLUSHSA
177 XFRM_MSG_FLUSHPOLICY,
178 #define XFRM_MSG_FLUSHPOLICY XFRM_MSG_FLUSHPOLICY
181 #define XFRM_MSG_NEWAE XFRM_MSG_NEWAE
183 #define XFRM_MSG_GETAE XFRM_MSG_GETAE
186 #define XFRM_MSG_REPORT XFRM_MSG_REPORT
189 #define XFRM_MSG_MIGRATE XFRM_MSG_MIGRATE
192 #define XFRM_MSG_NEWSADINFO XFRM_MSG_NEWSADINFO
194 #define XFRM_MSG_GETSADINFO XFRM_MSG_GETSADINFO
197 #define XFRM_MSG_NEWSPDINFO XFRM_MSG_NEWSPDINFO
199 #define XFRM_MSG_GETSPDINFO XFRM_MSG_GETSPDINFO
202 #define XFRM_MSG_MAPPING XFRM_MSG_MAPPING
205 #define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1)
207 #define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE)
210 * Generic LSM security context for comunicating to user space
211 * NOTE: Same format as sadb_x_sec_ctx
213 struct xfrm_user_sec_ctx {
216 __u8 ctx_alg; /* LSMs: e.g., selinux == 1 */
221 struct xfrm_user_tmpl {
224 xfrm_address_t saddr;
234 struct xfrm_encap_tmpl {
238 xfrm_address_t encap_oa;
242 enum xfrm_ae_ftype_t {
244 XFRM_AE_RTHR=1, /* replay threshold*/
245 XFRM_AE_RVAL=2, /* replay value */
246 XFRM_AE_LVAL=4, /* lifetime value */
247 XFRM_AE_ETHR=8, /* expiry timer threshold */
248 XFRM_AE_CR=16, /* Event cause is replay update */
249 XFRM_AE_CE=32, /* Event cause is timer expiry */
250 XFRM_AE_CU=64, /* Event cause is policy update */
253 #define XFRM_AE_MAX (__XFRM_AE_MAX - 1)
256 struct xfrm_userpolicy_type {
262 /* Netlink message attributes. */
263 enum xfrm_attr_type_t {
265 XFRMA_ALG_AUTH, /* struct xfrm_algo */
266 XFRMA_ALG_CRYPT, /* struct xfrm_algo */
267 XFRMA_ALG_COMP, /* struct xfrm_algo */
268 XFRMA_ENCAP, /* struct xfrm_algo + struct xfrm_encap_tmpl */
269 XFRMA_TMPL, /* 1 or more struct xfrm_user_tmpl */
270 XFRMA_SA, /* struct xfrm_usersa_info */
271 XFRMA_POLICY, /*struct xfrm_userpolicy_info */
272 XFRMA_SEC_CTX, /* struct xfrm_sec_ctx */
277 XFRMA_SRCADDR, /* xfrm_address_t */
278 XFRMA_COADDR, /* xfrm_address_t */
279 XFRMA_LASTUSED, /* unsigned long */
280 XFRMA_POLICY_TYPE, /* struct xfrm_userpolicy_type */
282 XFRMA_ALG_AEAD, /* struct xfrm_algo_aead */
283 XFRMA_KMADDRESS, /* struct xfrm_user_kmaddress */
284 XFRMA_ALG_AUTH_TRUNC, /* struct xfrm_algo_auth */
285 XFRMA_MARK, /* struct xfrm_mark */
286 XFRMA_TFCPAD, /* __u32 */
289 #define XFRMA_MAX (__XFRMA_MAX - 1)
297 enum xfrm_sadattr_type_t {
303 #define XFRMA_SAD_MAX (__XFRMA_SAD_MAX - 1)
306 struct xfrmu_sadhinfo {
307 __u32 sadhcnt; /* current hash bkts */
308 __u32 sadhmcnt; /* max allowed hash bkts */
311 enum xfrm_spdattr_type_t {
317 #define XFRMA_SPD_MAX (__XFRMA_SPD_MAX - 1)
320 struct xfrmu_spdinfo {
329 struct xfrmu_spdhinfo {
334 struct xfrm_usersa_info {
335 struct xfrm_selector sel;
337 xfrm_address_t saddr;
338 struct xfrm_lifetime_cfg lft;
339 struct xfrm_lifetime_cur curlft;
340 struct xfrm_stats stats;
344 __u8 mode; /* XFRM_MODE_xxx */
347 #define XFRM_STATE_NOECN 1
348 #define XFRM_STATE_DECAP_DSCP 2
349 #define XFRM_STATE_NOPMTUDISC 4
350 #define XFRM_STATE_WILDRECV 8
351 #define XFRM_STATE_ICMP 16
352 #define XFRM_STATE_AF_UNSPEC 32
355 struct xfrm_usersa_id {
356 xfrm_address_t daddr;
362 struct xfrm_aevent_id {
363 struct xfrm_usersa_id sa_id;
364 xfrm_address_t saddr;
369 struct xfrm_userspi_info {
370 struct xfrm_usersa_info info;
375 struct xfrm_userpolicy_info {
376 struct xfrm_selector sel;
377 struct xfrm_lifetime_cfg lft;
378 struct xfrm_lifetime_cur curlft;
383 #define XFRM_POLICY_ALLOW 0
384 #define XFRM_POLICY_BLOCK 1
386 #define XFRM_POLICY_LOCALOK 1 /* Allow user to override global policy */
387 /* Automatically expand selector to include matching ICMP payloads. */
388 #define XFRM_POLICY_ICMP 2
392 struct xfrm_userpolicy_id {
393 struct xfrm_selector sel;
398 struct xfrm_user_acquire {
400 xfrm_address_t saddr;
401 struct xfrm_selector sel;
402 struct xfrm_userpolicy_info policy;
409 struct xfrm_user_expire {
410 struct xfrm_usersa_info state;
414 struct xfrm_user_polexpire {
415 struct xfrm_userpolicy_info pol;
419 struct xfrm_usersa_flush {
423 struct xfrm_user_report {
425 struct xfrm_selector sel;
428 /* Used by MIGRATE to pass addresses IKE should use to perform
429 * SA negotiation with the peer */
430 struct xfrm_user_kmaddress {
431 xfrm_address_t local;
432 xfrm_address_t remote;
437 struct xfrm_user_migrate {
438 xfrm_address_t old_daddr;
439 xfrm_address_t old_saddr;
440 xfrm_address_t new_daddr;
441 xfrm_address_t new_saddr;
450 struct xfrm_user_mapping {
451 struct xfrm_usersa_id id;
453 xfrm_address_t old_saddr;
454 xfrm_address_t new_saddr;
460 /* backwards compatibility for userspace */
461 #define XFRMGRP_ACQUIRE 1
462 #define XFRMGRP_EXPIRE 2
464 #define XFRMGRP_POLICY 8
465 #define XFRMGRP_REPORT 0x20
470 #define XFRMNLGRP_NONE XFRMNLGRP_NONE
472 #define XFRMNLGRP_ACQUIRE XFRMNLGRP_ACQUIRE
474 #define XFRMNLGRP_EXPIRE XFRMNLGRP_EXPIRE
476 #define XFRMNLGRP_SA XFRMNLGRP_SA
478 #define XFRMNLGRP_POLICY XFRMNLGRP_POLICY
480 #define XFRMNLGRP_AEVENTS XFRMNLGRP_AEVENTS
482 #define XFRMNLGRP_REPORT XFRMNLGRP_REPORT
484 #define XFRMNLGRP_MIGRATE XFRMNLGRP_MIGRATE
486 #define XFRMNLGRP_MAPPING XFRMNLGRP_MAPPING
489 #define XFRMNLGRP_MAX (__XFRMNLGRP_MAX - 1)
491 #endif /* _LINUX_XFRM_H */