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.
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.
38 /* Security Context Domains of Interpretation */
39 #define XFRM_SC_DOI_RESERVED 0
40 #define XFRM_SC_DOI_LSM 1
42 /* Security Context Algorithms */
43 #define XFRM_SC_ALG_RESERVED 0
44 #define XFRM_SC_ALG_SELINUX 1
46 /* Selector, used as selector both on policy rules (SPD) and SAs. */
64 #define XFRM_INF (~(__u64)0)
66 struct xfrm_lifetime_cfg
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;
78 struct xfrm_lifetime_cur
86 struct xfrm_replay_state
95 int alg_key_len; /* in bits */
102 __u32 integrity_failed;
107 XFRM_POLICY_TYPE_MAIN = 0,
108 XFRM_POLICY_TYPE_SUB = 1,
109 XFRM_POLICY_TYPE_MAX = 2
122 XFRM_SHARE_ANY, /* No limitations */
123 XFRM_SHARE_SESSION, /* For this session only */
124 XFRM_SHARE_USER, /* For this user only */
125 XFRM_SHARE_UNIQUE /* Use once */
128 #define XFRM_MODE_TRANSPORT 0
129 #define XFRM_MODE_TUNNEL 1
130 #define XFRM_MODE_ROUTEOPTIMIZATION 2
131 #define XFRM_MODE_IN_TRIGGER 3
132 #define XFRM_MODE_MAX 4
134 /* Netlink configuration messages. */
136 XFRM_MSG_BASE = 0x10,
138 XFRM_MSG_NEWSA = 0x10,
139 #define XFRM_MSG_NEWSA XFRM_MSG_NEWSA
141 #define XFRM_MSG_DELSA XFRM_MSG_DELSA
143 #define XFRM_MSG_GETSA XFRM_MSG_GETSA
146 #define XFRM_MSG_NEWPOLICY XFRM_MSG_NEWPOLICY
148 #define XFRM_MSG_DELPOLICY XFRM_MSG_DELPOLICY
150 #define XFRM_MSG_GETPOLICY XFRM_MSG_GETPOLICY
153 #define XFRM_MSG_ALLOCSPI XFRM_MSG_ALLOCSPI
155 #define XFRM_MSG_ACQUIRE XFRM_MSG_ACQUIRE
157 #define XFRM_MSG_EXPIRE XFRM_MSG_EXPIRE
160 #define XFRM_MSG_UPDPOLICY XFRM_MSG_UPDPOLICY
162 #define XFRM_MSG_UPDSA XFRM_MSG_UPDSA
165 #define XFRM_MSG_POLEXPIRE XFRM_MSG_POLEXPIRE
168 #define XFRM_MSG_FLUSHSA XFRM_MSG_FLUSHSA
169 XFRM_MSG_FLUSHPOLICY,
170 #define XFRM_MSG_FLUSHPOLICY XFRM_MSG_FLUSHPOLICY
173 #define XFRM_MSG_NEWAE XFRM_MSG_NEWAE
175 #define XFRM_MSG_GETAE XFRM_MSG_GETAE
178 #define XFRM_MSG_REPORT XFRM_MSG_REPORT
182 #define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1)
184 #define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE)
187 * Generic LSM security context for comunicating to user space
188 * NOTE: Same format as sadb_x_sec_ctx
190 struct xfrm_user_sec_ctx {
193 __u8 ctx_alg; /* LSMs: e.g., selinux == 1 */
198 struct xfrm_user_tmpl {
201 xfrm_address_t saddr;
211 struct xfrm_encap_tmpl {
215 xfrm_address_t encap_oa;
219 enum xfrm_ae_ftype_t {
221 XFRM_AE_RTHR=1, /* replay threshold*/
222 XFRM_AE_RVAL=2, /* replay value */
223 XFRM_AE_LVAL=4, /* lifetime value */
224 XFRM_AE_ETHR=8, /* expiry timer threshold */
225 XFRM_AE_CR=16, /* Event cause is replay update */
226 XFRM_AE_CE=32, /* Event cause is timer expiry */
227 XFRM_AE_CU=64, /* Event cause is policy update */
230 #define XFRM_AE_MAX (__XFRM_AE_MAX - 1)
233 struct xfrm_userpolicy_type {
239 /* Netlink message attributes. */
240 enum xfrm_attr_type_t {
242 XFRMA_ALG_AUTH, /* struct xfrm_algo */
243 XFRMA_ALG_CRYPT, /* struct xfrm_algo */
244 XFRMA_ALG_COMP, /* struct xfrm_algo */
245 XFRMA_ENCAP, /* struct xfrm_algo + struct xfrm_encap_tmpl */
246 XFRMA_TMPL, /* 1 or more struct xfrm_user_tmpl */
249 XFRMA_SEC_CTX, /* struct xfrm_sec_ctx */
254 XFRMA_SRCADDR, /* xfrm_address_t */
255 XFRMA_COADDR, /* xfrm_address_t */
257 XFRMA_POLICY_TYPE, /* struct xfrm_userpolicy_type */
260 #define XFRMA_MAX (__XFRMA_MAX - 1)
263 struct xfrm_usersa_info {
264 struct xfrm_selector sel;
266 xfrm_address_t saddr;
267 struct xfrm_lifetime_cfg lft;
268 struct xfrm_lifetime_cur curlft;
269 struct xfrm_stats stats;
273 __u8 mode; /* XFRM_MODE_xxx */
276 #define XFRM_STATE_NOECN 1
277 #define XFRM_STATE_DECAP_DSCP 2
278 #define XFRM_STATE_NOPMTUDISC 4
279 #define XFRM_STATE_WILDRECV 8
282 struct xfrm_usersa_id {
283 xfrm_address_t daddr;
289 struct xfrm_aevent_id {
290 struct xfrm_usersa_id sa_id;
294 struct xfrm_userspi_info {
295 struct xfrm_usersa_info info;
300 struct xfrm_userpolicy_info {
301 struct xfrm_selector sel;
302 struct xfrm_lifetime_cfg lft;
303 struct xfrm_lifetime_cur curlft;
308 #define XFRM_POLICY_ALLOW 0
309 #define XFRM_POLICY_BLOCK 1
311 #define XFRM_POLICY_LOCALOK 1 /* Allow user to override global policy */
315 struct xfrm_userpolicy_id {
316 struct xfrm_selector sel;
321 struct xfrm_user_acquire {
323 xfrm_address_t saddr;
324 struct xfrm_selector sel;
325 struct xfrm_userpolicy_info policy;
332 struct xfrm_user_expire {
333 struct xfrm_usersa_info state;
337 struct xfrm_user_polexpire {
338 struct xfrm_userpolicy_info pol;
342 struct xfrm_usersa_flush {
346 struct xfrm_user_report {
348 struct xfrm_selector sel;
352 /* backwards compatibility for userspace */
353 #define XFRMGRP_ACQUIRE 1
354 #define XFRMGRP_EXPIRE 2
356 #define XFRMGRP_POLICY 8
357 #define XFRMGRP_REPORT 0x10
362 #define XFRMNLGRP_NONE XFRMNLGRP_NONE
364 #define XFRMNLGRP_ACQUIRE XFRMNLGRP_ACQUIRE
366 #define XFRMNLGRP_EXPIRE XFRMNLGRP_EXPIRE
368 #define XFRMNLGRP_SA XFRMNLGRP_SA
370 #define XFRMNLGRP_POLICY XFRMNLGRP_POLICY
372 #define XFRMNLGRP_AEVENTS XFRMNLGRP_AEVENTS
374 #define XFRMNLGRP_REPORT XFRMNLGRP_REPORT
377 #define XFRMNLGRP_MAX (__XFRMNLGRP_MAX - 1)
379 #endif /* _LINUX_XFRM_H */