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;
115 XFRM_SHARE_ANY, /* No limitations */
116 XFRM_SHARE_SESSION, /* For this session only */
117 XFRM_SHARE_USER, /* For this user only */
118 XFRM_SHARE_UNIQUE /* Use once */
121 #define XFRM_MODE_TRANSPORT 0
122 #define XFRM_MODE_TUNNEL 1
123 #define XFRM_MODE_ROUTEOPTIMIZATION 2
124 #define XFRM_MODE_IN_TRIGGER 3
125 #define XFRM_MODE_MAX 4
127 /* Netlink configuration messages. */
129 XFRM_MSG_BASE = 0x10,
131 XFRM_MSG_NEWSA = 0x10,
132 #define XFRM_MSG_NEWSA XFRM_MSG_NEWSA
134 #define XFRM_MSG_DELSA XFRM_MSG_DELSA
136 #define XFRM_MSG_GETSA XFRM_MSG_GETSA
139 #define XFRM_MSG_NEWPOLICY XFRM_MSG_NEWPOLICY
141 #define XFRM_MSG_DELPOLICY XFRM_MSG_DELPOLICY
143 #define XFRM_MSG_GETPOLICY XFRM_MSG_GETPOLICY
146 #define XFRM_MSG_ALLOCSPI XFRM_MSG_ALLOCSPI
148 #define XFRM_MSG_ACQUIRE XFRM_MSG_ACQUIRE
150 #define XFRM_MSG_EXPIRE XFRM_MSG_EXPIRE
153 #define XFRM_MSG_UPDPOLICY XFRM_MSG_UPDPOLICY
155 #define XFRM_MSG_UPDSA XFRM_MSG_UPDSA
158 #define XFRM_MSG_POLEXPIRE XFRM_MSG_POLEXPIRE
161 #define XFRM_MSG_FLUSHSA XFRM_MSG_FLUSHSA
162 XFRM_MSG_FLUSHPOLICY,
163 #define XFRM_MSG_FLUSHPOLICY XFRM_MSG_FLUSHPOLICY
166 #define XFRM_MSG_NEWAE XFRM_MSG_NEWAE
168 #define XFRM_MSG_GETAE XFRM_MSG_GETAE
171 #define XFRM_MSG_REPORT XFRM_MSG_REPORT
175 #define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1)
177 #define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE)
180 * Generic LSM security context for comunicating to user space
181 * NOTE: Same format as sadb_x_sec_ctx
183 struct xfrm_user_sec_ctx {
186 __u8 ctx_alg; /* LSMs: e.g., selinux == 1 */
191 struct xfrm_user_tmpl {
194 xfrm_address_t saddr;
204 struct xfrm_encap_tmpl {
208 xfrm_address_t encap_oa;
212 enum xfrm_ae_ftype_t {
214 XFRM_AE_RTHR=1, /* replay threshold*/
215 XFRM_AE_RVAL=2, /* replay value */
216 XFRM_AE_LVAL=4, /* lifetime value */
217 XFRM_AE_ETHR=8, /* expiry timer threshold */
218 XFRM_AE_CR=16, /* Event cause is replay update */
219 XFRM_AE_CE=32, /* Event cause is timer expiry */
220 XFRM_AE_CU=64, /* Event cause is policy update */
223 #define XFRM_AE_MAX (__XFRM_AE_MAX - 1)
226 /* Netlink message attributes. */
227 enum xfrm_attr_type_t {
229 XFRMA_ALG_AUTH, /* struct xfrm_algo */
230 XFRMA_ALG_CRYPT, /* struct xfrm_algo */
231 XFRMA_ALG_COMP, /* struct xfrm_algo */
232 XFRMA_ENCAP, /* struct xfrm_algo + struct xfrm_encap_tmpl */
233 XFRMA_TMPL, /* 1 or more struct xfrm_user_tmpl */
236 XFRMA_SEC_CTX, /* struct xfrm_sec_ctx */
241 XFRMA_SRCADDR, /* xfrm_address_t */
242 XFRMA_COADDR, /* xfrm_address_t */
246 #define XFRMA_MAX (__XFRMA_MAX - 1)
249 struct xfrm_usersa_info {
250 struct xfrm_selector sel;
252 xfrm_address_t saddr;
253 struct xfrm_lifetime_cfg lft;
254 struct xfrm_lifetime_cur curlft;
255 struct xfrm_stats stats;
259 __u8 mode; /* XFRM_MODE_xxx */
262 #define XFRM_STATE_NOECN 1
263 #define XFRM_STATE_DECAP_DSCP 2
264 #define XFRM_STATE_NOPMTUDISC 4
265 #define XFRM_STATE_WILDRECV 8
268 struct xfrm_usersa_id {
269 xfrm_address_t daddr;
275 struct xfrm_aevent_id {
276 struct xfrm_usersa_id sa_id;
280 struct xfrm_userspi_info {
281 struct xfrm_usersa_info info;
286 struct xfrm_userpolicy_info {
287 struct xfrm_selector sel;
288 struct xfrm_lifetime_cfg lft;
289 struct xfrm_lifetime_cur curlft;
294 #define XFRM_POLICY_ALLOW 0
295 #define XFRM_POLICY_BLOCK 1
297 #define XFRM_POLICY_LOCALOK 1 /* Allow user to override global policy */
301 struct xfrm_userpolicy_id {
302 struct xfrm_selector sel;
307 struct xfrm_user_acquire {
309 xfrm_address_t saddr;
310 struct xfrm_selector sel;
311 struct xfrm_userpolicy_info policy;
318 struct xfrm_user_expire {
319 struct xfrm_usersa_info state;
323 struct xfrm_user_polexpire {
324 struct xfrm_userpolicy_info pol;
328 struct xfrm_usersa_flush {
332 struct xfrm_user_report {
334 struct xfrm_selector sel;
338 /* backwards compatibility for userspace */
339 #define XFRMGRP_ACQUIRE 1
340 #define XFRMGRP_EXPIRE 2
342 #define XFRMGRP_POLICY 8
343 #define XFRMGRP_REPORT 0x10
348 #define XFRMNLGRP_NONE XFRMNLGRP_NONE
350 #define XFRMNLGRP_ACQUIRE XFRMNLGRP_ACQUIRE
352 #define XFRMNLGRP_EXPIRE XFRMNLGRP_EXPIRE
354 #define XFRMNLGRP_SA XFRMNLGRP_SA
356 #define XFRMNLGRP_POLICY XFRMNLGRP_POLICY
358 #define XFRMNLGRP_AEVENTS XFRMNLGRP_AEVENTS
360 #define XFRMNLGRP_REPORT XFRMNLGRP_REPORT
363 #define XFRMNLGRP_MAX (__XFRMNLGRP_MAX - 1)
365 #endif /* _LINUX_XFRM_H */