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 /* Netlink configuration messages. */
123 XFRM_MSG_BASE = 0x10,
125 XFRM_MSG_NEWSA = 0x10,
126 #define XFRM_MSG_NEWSA XFRM_MSG_NEWSA
128 #define XFRM_MSG_DELSA XFRM_MSG_DELSA
130 #define XFRM_MSG_GETSA XFRM_MSG_GETSA
133 #define XFRM_MSG_NEWPOLICY XFRM_MSG_NEWPOLICY
135 #define XFRM_MSG_DELPOLICY XFRM_MSG_DELPOLICY
137 #define XFRM_MSG_GETPOLICY XFRM_MSG_GETPOLICY
140 #define XFRM_MSG_ALLOCSPI XFRM_MSG_ALLOCSPI
142 #define XFRM_MSG_ACQUIRE XFRM_MSG_ACQUIRE
144 #define XFRM_MSG_EXPIRE XFRM_MSG_EXPIRE
147 #define XFRM_MSG_UPDPOLICY XFRM_MSG_UPDPOLICY
149 #define XFRM_MSG_UPDSA XFRM_MSG_UPDSA
152 #define XFRM_MSG_POLEXPIRE XFRM_MSG_POLEXPIRE
155 #define XFRM_MSG_FLUSHSA XFRM_MSG_FLUSHSA
156 XFRM_MSG_FLUSHPOLICY,
157 #define XFRM_MSG_FLUSHPOLICY XFRM_MSG_FLUSHPOLICY
160 #define XFRM_MSG_NEWAE XFRM_MSG_NEWAE
162 #define XFRM_MSG_GETAE XFRM_MSG_GETAE
165 #define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1)
167 #define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE)
170 * Generic LSM security context for comunicating to user space
171 * NOTE: Same format as sadb_x_sec_ctx
173 struct xfrm_user_sec_ctx {
176 __u8 ctx_alg; /* LSMs: e.g., selinux == 1 */
181 struct xfrm_user_tmpl {
184 xfrm_address_t saddr;
194 struct xfrm_encap_tmpl {
198 xfrm_address_t encap_oa;
202 enum xfrm_ae_ftype_t {
204 XFRM_AE_RTHR=1, /* replay threshold*/
205 XFRM_AE_RVAL=2, /* replay value */
206 XFRM_AE_LVAL=4, /* lifetime value */
207 XFRM_AE_ETHR=8, /* expiry timer threshold */
208 XFRM_AE_CR=16, /* Event cause is replay update */
209 XFRM_AE_CE=32, /* Event cause is timer expiry */
210 XFRM_AE_CU=64, /* Event cause is policy update */
213 #define XFRM_AE_MAX (__XFRM_AE_MAX - 1)
216 /* Netlink message attributes. */
217 enum xfrm_attr_type_t {
219 XFRMA_ALG_AUTH, /* struct xfrm_algo */
220 XFRMA_ALG_CRYPT, /* struct xfrm_algo */
221 XFRMA_ALG_COMP, /* struct xfrm_algo */
222 XFRMA_ENCAP, /* struct xfrm_algo + struct xfrm_encap_tmpl */
223 XFRMA_TMPL, /* 1 or more struct xfrm_user_tmpl */
226 XFRMA_SEC_CTX, /* struct xfrm_sec_ctx */
233 #define XFRMA_MAX (__XFRMA_MAX - 1)
236 struct xfrm_usersa_info {
237 struct xfrm_selector sel;
239 xfrm_address_t saddr;
240 struct xfrm_lifetime_cfg lft;
241 struct xfrm_lifetime_cur curlft;
242 struct xfrm_stats stats;
246 __u8 mode; /* 0=transport,1=tunnel */
249 #define XFRM_STATE_NOECN 1
250 #define XFRM_STATE_DECAP_DSCP 2
251 #define XFRM_STATE_NOPMTUDISC 4
254 struct xfrm_usersa_id {
255 xfrm_address_t daddr;
261 struct xfrm_aevent_id {
262 struct xfrm_usersa_id sa_id;
266 struct xfrm_userspi_info {
267 struct xfrm_usersa_info info;
272 struct xfrm_userpolicy_info {
273 struct xfrm_selector sel;
274 struct xfrm_lifetime_cfg lft;
275 struct xfrm_lifetime_cur curlft;
280 #define XFRM_POLICY_ALLOW 0
281 #define XFRM_POLICY_BLOCK 1
283 #define XFRM_POLICY_LOCALOK 1 /* Allow user to override global policy */
287 struct xfrm_userpolicy_id {
288 struct xfrm_selector sel;
293 struct xfrm_user_acquire {
295 xfrm_address_t saddr;
296 struct xfrm_selector sel;
297 struct xfrm_userpolicy_info policy;
304 struct xfrm_user_expire {
305 struct xfrm_usersa_info state;
309 struct xfrm_user_polexpire {
310 struct xfrm_userpolicy_info pol;
314 struct xfrm_usersa_flush {
319 /* backwards compatibility for userspace */
320 #define XFRMGRP_ACQUIRE 1
321 #define XFRMGRP_EXPIRE 2
323 #define XFRMGRP_POLICY 8
328 #define XFRMNLGRP_NONE XFRMNLGRP_NONE
330 #define XFRMNLGRP_ACQUIRE XFRMNLGRP_ACQUIRE
332 #define XFRMNLGRP_EXPIRE XFRMNLGRP_EXPIRE
334 #define XFRMNLGRP_SA XFRMNLGRP_SA
336 #define XFRMNLGRP_POLICY XFRMNLGRP_POLICY
338 #define XFRMNLGRP_AEVENTS XFRMNLGRP_AEVENTS
341 #define XFRMNLGRP_MAX (__XFRMNLGRP_MAX - 1)
343 #endif /* _LINUX_XFRM_H */