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_BEET 4
133 #define XFRM_MODE_MAX 5
135 /* Netlink configuration messages. */
137 XFRM_MSG_BASE
= 0x10,
139 XFRM_MSG_NEWSA
= 0x10,
140 #define XFRM_MSG_NEWSA XFRM_MSG_NEWSA
142 #define XFRM_MSG_DELSA XFRM_MSG_DELSA
144 #define XFRM_MSG_GETSA XFRM_MSG_GETSA
147 #define XFRM_MSG_NEWPOLICY XFRM_MSG_NEWPOLICY
149 #define XFRM_MSG_DELPOLICY XFRM_MSG_DELPOLICY
151 #define XFRM_MSG_GETPOLICY XFRM_MSG_GETPOLICY
154 #define XFRM_MSG_ALLOCSPI XFRM_MSG_ALLOCSPI
156 #define XFRM_MSG_ACQUIRE XFRM_MSG_ACQUIRE
158 #define XFRM_MSG_EXPIRE XFRM_MSG_EXPIRE
161 #define XFRM_MSG_UPDPOLICY XFRM_MSG_UPDPOLICY
163 #define XFRM_MSG_UPDSA XFRM_MSG_UPDSA
166 #define XFRM_MSG_POLEXPIRE XFRM_MSG_POLEXPIRE
169 #define XFRM_MSG_FLUSHSA XFRM_MSG_FLUSHSA
170 XFRM_MSG_FLUSHPOLICY
,
171 #define XFRM_MSG_FLUSHPOLICY XFRM_MSG_FLUSHPOLICY
174 #define XFRM_MSG_NEWAE XFRM_MSG_NEWAE
176 #define XFRM_MSG_GETAE XFRM_MSG_GETAE
179 #define XFRM_MSG_REPORT XFRM_MSG_REPORT
182 #define XFRM_MSG_MIGRATE XFRM_MSG_MIGRATE
185 #define XFRM_MSG_NEWSADINFO XFRM_MSG_NEWSADINFO
187 #define XFRM_MSG_GETSADINFO XFRM_MSG_GETSADINFO
190 #define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1)
192 #define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE)
195 * Generic LSM security context for comunicating to user space
196 * NOTE: Same format as sadb_x_sec_ctx
198 struct xfrm_user_sec_ctx
{
201 __u8 ctx_alg
; /* LSMs: e.g., selinux == 1 */
206 struct xfrm_user_tmpl
{
209 xfrm_address_t saddr
;
219 struct xfrm_encap_tmpl
{
223 xfrm_address_t encap_oa
;
227 enum xfrm_ae_ftype_t
{
229 XFRM_AE_RTHR
=1, /* replay threshold*/
230 XFRM_AE_RVAL
=2, /* replay value */
231 XFRM_AE_LVAL
=4, /* lifetime value */
232 XFRM_AE_ETHR
=8, /* expiry timer threshold */
233 XFRM_AE_CR
=16, /* Event cause is replay update */
234 XFRM_AE_CE
=32, /* Event cause is timer expiry */
235 XFRM_AE_CU
=64, /* Event cause is policy update */
238 #define XFRM_AE_MAX (__XFRM_AE_MAX - 1)
241 /* SAD Table filter flags */
242 enum xfrm_sad_ftype_t
{
249 #define XFRM_SAD_MAX (__XFRM_SAD_MAX - 1)
252 struct xfrm_userpolicy_type
{
258 /* Netlink message attributes. */
259 enum xfrm_attr_type_t
{
261 XFRMA_ALG_AUTH
, /* struct xfrm_algo */
262 XFRMA_ALG_CRYPT
, /* struct xfrm_algo */
263 XFRMA_ALG_COMP
, /* struct xfrm_algo */
264 XFRMA_ENCAP
, /* struct xfrm_algo + struct xfrm_encap_tmpl */
265 XFRMA_TMPL
, /* 1 or more struct xfrm_user_tmpl */
268 XFRMA_SEC_CTX
, /* struct xfrm_sec_ctx */
273 XFRMA_SRCADDR
, /* xfrm_address_t */
274 XFRMA_COADDR
, /* xfrm_address_t */
276 XFRMA_POLICY_TYPE
, /* struct xfrm_userpolicy_type */
280 #define XFRMA_MAX (__XFRMA_MAX - 1)
283 enum xfrm_sadattr_type_t
{
290 #define XFRMA_SAD_MAX (__XFRMA_SAD_MAX - 1)
293 struct xfrm_usersa_info
{
294 struct xfrm_selector sel
;
296 xfrm_address_t saddr
;
297 struct xfrm_lifetime_cfg lft
;
298 struct xfrm_lifetime_cur curlft
;
299 struct xfrm_stats stats
;
303 __u8 mode
; /* XFRM_MODE_xxx */
306 #define XFRM_STATE_NOECN 1
307 #define XFRM_STATE_DECAP_DSCP 2
308 #define XFRM_STATE_NOPMTUDISC 4
309 #define XFRM_STATE_WILDRECV 8
312 struct xfrm_usersa_id
{
313 xfrm_address_t daddr
;
319 struct xfrm_aevent_id
{
320 struct xfrm_usersa_id sa_id
;
321 xfrm_address_t saddr
;
326 struct xfrm_userspi_info
{
327 struct xfrm_usersa_info info
;
332 struct xfrm_userpolicy_info
{
333 struct xfrm_selector sel
;
334 struct xfrm_lifetime_cfg lft
;
335 struct xfrm_lifetime_cur curlft
;
340 #define XFRM_POLICY_ALLOW 0
341 #define XFRM_POLICY_BLOCK 1
343 #define XFRM_POLICY_LOCALOK 1 /* Allow user to override global policy */
347 struct xfrm_userpolicy_id
{
348 struct xfrm_selector sel
;
353 struct xfrm_user_acquire
{
355 xfrm_address_t saddr
;
356 struct xfrm_selector sel
;
357 struct xfrm_userpolicy_info policy
;
364 struct xfrm_user_expire
{
365 struct xfrm_usersa_info state
;
369 struct xfrm_user_polexpire
{
370 struct xfrm_userpolicy_info pol
;
374 struct xfrm_usersa_flush
{
378 struct xfrm_user_report
{
380 struct xfrm_selector sel
;
383 struct xfrm_user_migrate
{
384 xfrm_address_t old_daddr
;
385 xfrm_address_t old_saddr
;
386 xfrm_address_t new_daddr
;
387 xfrm_address_t new_saddr
;
397 /* backwards compatibility for userspace */
398 #define XFRMGRP_ACQUIRE 1
399 #define XFRMGRP_EXPIRE 2
401 #define XFRMGRP_POLICY 8
402 #define XFRMGRP_REPORT 0x20
407 #define XFRMNLGRP_NONE XFRMNLGRP_NONE
409 #define XFRMNLGRP_ACQUIRE XFRMNLGRP_ACQUIRE
411 #define XFRMNLGRP_EXPIRE XFRMNLGRP_EXPIRE
413 #define XFRMNLGRP_SA XFRMNLGRP_SA
415 #define XFRMNLGRP_POLICY XFRMNLGRP_POLICY
417 #define XFRMNLGRP_AEVENTS XFRMNLGRP_AEVENTS
419 #define XFRMNLGRP_REPORT XFRMNLGRP_REPORT
421 #define XFRMNLGRP_MIGRATE XFRMNLGRP_MIGRATE
424 #define XFRMNLGRP_MAX (__XFRMNLGRP_MAX - 1)
426 #endif /* _LINUX_XFRM_H */