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 unsigned int alg_key_len; /* in bits */
99 struct xfrm_algo_aead {
101 int alg_key_len; /* in bits */
102 int alg_icv_len; /* in bits */
109 __u32 integrity_failed;
114 XFRM_POLICY_TYPE_MAIN = 0,
115 XFRM_POLICY_TYPE_SUB = 1,
116 XFRM_POLICY_TYPE_MAX = 2
124 XFRM_POLICY_MASK = 3,
130 XFRM_SHARE_ANY, /* No limitations */
131 XFRM_SHARE_SESSION, /* For this session only */
132 XFRM_SHARE_USER, /* For this user only */
133 XFRM_SHARE_UNIQUE /* Use once */
136 #define XFRM_MODE_TRANSPORT 0
137 #define XFRM_MODE_TUNNEL 1
138 #define XFRM_MODE_ROUTEOPTIMIZATION 2
139 #define XFRM_MODE_IN_TRIGGER 3
140 #define XFRM_MODE_BEET 4
141 #define XFRM_MODE_MAX 5
143 /* Netlink configuration messages. */
145 XFRM_MSG_BASE = 0x10,
147 XFRM_MSG_NEWSA = 0x10,
148 #define XFRM_MSG_NEWSA XFRM_MSG_NEWSA
150 #define XFRM_MSG_DELSA XFRM_MSG_DELSA
152 #define XFRM_MSG_GETSA XFRM_MSG_GETSA
155 #define XFRM_MSG_NEWPOLICY XFRM_MSG_NEWPOLICY
157 #define XFRM_MSG_DELPOLICY XFRM_MSG_DELPOLICY
159 #define XFRM_MSG_GETPOLICY XFRM_MSG_GETPOLICY
162 #define XFRM_MSG_ALLOCSPI XFRM_MSG_ALLOCSPI
164 #define XFRM_MSG_ACQUIRE XFRM_MSG_ACQUIRE
166 #define XFRM_MSG_EXPIRE XFRM_MSG_EXPIRE
169 #define XFRM_MSG_UPDPOLICY XFRM_MSG_UPDPOLICY
171 #define XFRM_MSG_UPDSA XFRM_MSG_UPDSA
174 #define XFRM_MSG_POLEXPIRE XFRM_MSG_POLEXPIRE
177 #define XFRM_MSG_FLUSHSA XFRM_MSG_FLUSHSA
178 XFRM_MSG_FLUSHPOLICY,
179 #define XFRM_MSG_FLUSHPOLICY XFRM_MSG_FLUSHPOLICY
182 #define XFRM_MSG_NEWAE XFRM_MSG_NEWAE
184 #define XFRM_MSG_GETAE XFRM_MSG_GETAE
187 #define XFRM_MSG_REPORT XFRM_MSG_REPORT
190 #define XFRM_MSG_MIGRATE XFRM_MSG_MIGRATE
193 #define XFRM_MSG_NEWSADINFO XFRM_MSG_NEWSADINFO
195 #define XFRM_MSG_GETSADINFO XFRM_MSG_GETSADINFO
198 #define XFRM_MSG_NEWSPDINFO XFRM_MSG_NEWSPDINFO
200 #define XFRM_MSG_GETSPDINFO XFRM_MSG_GETSPDINFO
203 #define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1)
205 #define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE)
208 * Generic LSM security context for comunicating to user space
209 * NOTE: Same format as sadb_x_sec_ctx
211 struct xfrm_user_sec_ctx {
214 __u8 ctx_alg; /* LSMs: e.g., selinux == 1 */
219 struct xfrm_user_tmpl {
222 xfrm_address_t saddr;
232 struct xfrm_encap_tmpl {
236 xfrm_address_t encap_oa;
240 enum xfrm_ae_ftype_t {
242 XFRM_AE_RTHR=1, /* replay threshold*/
243 XFRM_AE_RVAL=2, /* replay value */
244 XFRM_AE_LVAL=4, /* lifetime value */
245 XFRM_AE_ETHR=8, /* expiry timer threshold */
246 XFRM_AE_CR=16, /* Event cause is replay update */
247 XFRM_AE_CE=32, /* Event cause is timer expiry */
248 XFRM_AE_CU=64, /* Event cause is policy update */
251 #define XFRM_AE_MAX (__XFRM_AE_MAX - 1)
254 struct xfrm_userpolicy_type {
260 /* Netlink message attributes. */
261 enum xfrm_attr_type_t {
263 XFRMA_ALG_AUTH, /* struct xfrm_algo */
264 XFRMA_ALG_CRYPT, /* struct xfrm_algo */
265 XFRMA_ALG_COMP, /* struct xfrm_algo */
266 XFRMA_ENCAP, /* struct xfrm_algo + struct xfrm_encap_tmpl */
267 XFRMA_TMPL, /* 1 or more struct xfrm_user_tmpl */
270 XFRMA_SEC_CTX, /* struct xfrm_sec_ctx */
275 XFRMA_SRCADDR, /* xfrm_address_t */
276 XFRMA_COADDR, /* xfrm_address_t */
278 XFRMA_POLICY_TYPE, /* struct xfrm_userpolicy_type */
280 XFRMA_ALG_AEAD, /* struct xfrm_algo_aead */
283 #define XFRMA_MAX (__XFRMA_MAX - 1)
286 enum xfrm_sadattr_type_t {
292 #define XFRMA_SAD_MAX (__XFRMA_SAD_MAX - 1)
295 struct xfrmu_sadhinfo {
296 __u32 sadhcnt; /* current hash bkts */
297 __u32 sadhmcnt; /* max allowed hash bkts */
300 enum xfrm_spdattr_type_t {
306 #define XFRMA_SPD_MAX (__XFRMA_SPD_MAX - 1)
309 struct xfrmu_spdinfo {
318 struct xfrmu_spdhinfo {
323 struct xfrm_usersa_info {
324 struct xfrm_selector sel;
326 xfrm_address_t saddr;
327 struct xfrm_lifetime_cfg lft;
328 struct xfrm_lifetime_cur curlft;
329 struct xfrm_stats stats;
333 __u8 mode; /* XFRM_MODE_xxx */
336 #define XFRM_STATE_NOECN 1
337 #define XFRM_STATE_DECAP_DSCP 2
338 #define XFRM_STATE_NOPMTUDISC 4
339 #define XFRM_STATE_WILDRECV 8
340 #define XFRM_STATE_ICMP 16
343 struct xfrm_usersa_id {
344 xfrm_address_t daddr;
350 struct xfrm_aevent_id {
351 struct xfrm_usersa_id sa_id;
352 xfrm_address_t saddr;
357 struct xfrm_userspi_info {
358 struct xfrm_usersa_info info;
363 struct xfrm_userpolicy_info {
364 struct xfrm_selector sel;
365 struct xfrm_lifetime_cfg lft;
366 struct xfrm_lifetime_cur curlft;
371 #define XFRM_POLICY_ALLOW 0
372 #define XFRM_POLICY_BLOCK 1
374 #define XFRM_POLICY_LOCALOK 1 /* Allow user to override global policy */
375 /* Automatically expand selector to include matching ICMP payloads. */
376 #define XFRM_POLICY_ICMP 2
380 struct xfrm_userpolicy_id {
381 struct xfrm_selector sel;
386 struct xfrm_user_acquire {
388 xfrm_address_t saddr;
389 struct xfrm_selector sel;
390 struct xfrm_userpolicy_info policy;
397 struct xfrm_user_expire {
398 struct xfrm_usersa_info state;
402 struct xfrm_user_polexpire {
403 struct xfrm_userpolicy_info pol;
407 struct xfrm_usersa_flush {
411 struct xfrm_user_report {
413 struct xfrm_selector sel;
416 struct xfrm_user_migrate {
417 xfrm_address_t old_daddr;
418 xfrm_address_t old_saddr;
419 xfrm_address_t new_daddr;
420 xfrm_address_t new_saddr;
430 /* backwards compatibility for userspace */
431 #define XFRMGRP_ACQUIRE 1
432 #define XFRMGRP_EXPIRE 2
434 #define XFRMGRP_POLICY 8
435 #define XFRMGRP_REPORT 0x20
440 #define XFRMNLGRP_NONE XFRMNLGRP_NONE
442 #define XFRMNLGRP_ACQUIRE XFRMNLGRP_ACQUIRE
444 #define XFRMNLGRP_EXPIRE XFRMNLGRP_EXPIRE
446 #define XFRMNLGRP_SA XFRMNLGRP_SA
448 #define XFRMNLGRP_POLICY XFRMNLGRP_POLICY
450 #define XFRMNLGRP_AEVENTS XFRMNLGRP_AEVENTS
452 #define XFRMNLGRP_REPORT XFRMNLGRP_REPORT
454 #define XFRMNLGRP_MIGRATE XFRMNLGRP_MIGRATE
457 #define XFRMNLGRP_MAX (__XFRMNLGRP_MAX - 1)
459 #endif /* _LINUX_XFRM_H */