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 unsigned int alg_key_len; /* in bits */
102 unsigned 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,
117 XFRM_POLICY_TYPE_ANY = 255
125 XFRM_POLICY_MASK = 3,
131 XFRM_SHARE_ANY, /* No limitations */
132 XFRM_SHARE_SESSION, /* For this session only */
133 XFRM_SHARE_USER, /* For this user only */
134 XFRM_SHARE_UNIQUE /* Use once */
137 #define XFRM_MODE_TRANSPORT 0
138 #define XFRM_MODE_TUNNEL 1
139 #define XFRM_MODE_ROUTEOPTIMIZATION 2
140 #define XFRM_MODE_IN_TRIGGER 3
141 #define XFRM_MODE_BEET 4
142 #define XFRM_MODE_MAX 5
144 /* Netlink configuration messages. */
146 XFRM_MSG_BASE = 0x10,
148 XFRM_MSG_NEWSA = 0x10,
149 #define XFRM_MSG_NEWSA XFRM_MSG_NEWSA
151 #define XFRM_MSG_DELSA XFRM_MSG_DELSA
153 #define XFRM_MSG_GETSA XFRM_MSG_GETSA
156 #define XFRM_MSG_NEWPOLICY XFRM_MSG_NEWPOLICY
158 #define XFRM_MSG_DELPOLICY XFRM_MSG_DELPOLICY
160 #define XFRM_MSG_GETPOLICY XFRM_MSG_GETPOLICY
163 #define XFRM_MSG_ALLOCSPI XFRM_MSG_ALLOCSPI
165 #define XFRM_MSG_ACQUIRE XFRM_MSG_ACQUIRE
167 #define XFRM_MSG_EXPIRE XFRM_MSG_EXPIRE
170 #define XFRM_MSG_UPDPOLICY XFRM_MSG_UPDPOLICY
172 #define XFRM_MSG_UPDSA XFRM_MSG_UPDSA
175 #define XFRM_MSG_POLEXPIRE XFRM_MSG_POLEXPIRE
178 #define XFRM_MSG_FLUSHSA XFRM_MSG_FLUSHSA
179 XFRM_MSG_FLUSHPOLICY,
180 #define XFRM_MSG_FLUSHPOLICY XFRM_MSG_FLUSHPOLICY
183 #define XFRM_MSG_NEWAE XFRM_MSG_NEWAE
185 #define XFRM_MSG_GETAE XFRM_MSG_GETAE
188 #define XFRM_MSG_REPORT XFRM_MSG_REPORT
191 #define XFRM_MSG_MIGRATE XFRM_MSG_MIGRATE
194 #define XFRM_MSG_NEWSADINFO XFRM_MSG_NEWSADINFO
196 #define XFRM_MSG_GETSADINFO XFRM_MSG_GETSADINFO
199 #define XFRM_MSG_NEWSPDINFO XFRM_MSG_NEWSPDINFO
201 #define XFRM_MSG_GETSPDINFO XFRM_MSG_GETSPDINFO
204 #define XFRM_MSG_MAPPING XFRM_MSG_MAPPING
207 #define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1)
209 #define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE)
212 * Generic LSM security context for comunicating to user space
213 * NOTE: Same format as sadb_x_sec_ctx
215 struct xfrm_user_sec_ctx {
218 __u8 ctx_alg; /* LSMs: e.g., selinux == 1 */
223 struct xfrm_user_tmpl {
226 xfrm_address_t saddr;
236 struct xfrm_encap_tmpl {
240 xfrm_address_t encap_oa;
244 enum xfrm_ae_ftype_t {
246 XFRM_AE_RTHR=1, /* replay threshold*/
247 XFRM_AE_RVAL=2, /* replay value */
248 XFRM_AE_LVAL=4, /* lifetime value */
249 XFRM_AE_ETHR=8, /* expiry timer threshold */
250 XFRM_AE_CR=16, /* Event cause is replay update */
251 XFRM_AE_CE=32, /* Event cause is timer expiry */
252 XFRM_AE_CU=64, /* Event cause is policy update */
255 #define XFRM_AE_MAX (__XFRM_AE_MAX - 1)
258 struct xfrm_userpolicy_type {
264 /* Netlink message attributes. */
265 enum xfrm_attr_type_t {
267 XFRMA_ALG_AUTH, /* struct xfrm_algo */
268 XFRMA_ALG_CRYPT, /* struct xfrm_algo */
269 XFRMA_ALG_COMP, /* struct xfrm_algo */
270 XFRMA_ENCAP, /* struct xfrm_algo + struct xfrm_encap_tmpl */
271 XFRMA_TMPL, /* 1 or more struct xfrm_user_tmpl */
274 XFRMA_SEC_CTX, /* struct xfrm_sec_ctx */
279 XFRMA_SRCADDR, /* xfrm_address_t */
280 XFRMA_COADDR, /* xfrm_address_t */
282 XFRMA_POLICY_TYPE, /* struct xfrm_userpolicy_type */
284 XFRMA_ALG_AEAD, /* struct xfrm_algo_aead */
285 XFRMA_KMADDRESS, /* struct xfrm_user_kmaddress */
288 #define XFRMA_MAX (__XFRMA_MAX - 1)
291 enum xfrm_sadattr_type_t {
297 #define XFRMA_SAD_MAX (__XFRMA_SAD_MAX - 1)
300 struct xfrmu_sadhinfo {
301 __u32 sadhcnt; /* current hash bkts */
302 __u32 sadhmcnt; /* max allowed hash bkts */
305 enum xfrm_spdattr_type_t {
311 #define XFRMA_SPD_MAX (__XFRMA_SPD_MAX - 1)
314 struct xfrmu_spdinfo {
323 struct xfrmu_spdhinfo {
328 struct xfrm_usersa_info {
329 struct xfrm_selector sel;
331 xfrm_address_t saddr;
332 struct xfrm_lifetime_cfg lft;
333 struct xfrm_lifetime_cur curlft;
334 struct xfrm_stats stats;
338 __u8 mode; /* XFRM_MODE_xxx */
341 #define XFRM_STATE_NOECN 1
342 #define XFRM_STATE_DECAP_DSCP 2
343 #define XFRM_STATE_NOPMTUDISC 4
344 #define XFRM_STATE_WILDRECV 8
345 #define XFRM_STATE_ICMP 16
346 #define XFRM_STATE_AF_UNSPEC 32
349 struct xfrm_usersa_id {
350 xfrm_address_t daddr;
356 struct xfrm_aevent_id {
357 struct xfrm_usersa_id sa_id;
358 xfrm_address_t saddr;
363 struct xfrm_userspi_info {
364 struct xfrm_usersa_info info;
369 struct xfrm_userpolicy_info {
370 struct xfrm_selector sel;
371 struct xfrm_lifetime_cfg lft;
372 struct xfrm_lifetime_cur curlft;
377 #define XFRM_POLICY_ALLOW 0
378 #define XFRM_POLICY_BLOCK 1
380 #define XFRM_POLICY_LOCALOK 1 /* Allow user to override global policy */
381 /* Automatically expand selector to include matching ICMP payloads. */
382 #define XFRM_POLICY_ICMP 2
386 struct xfrm_userpolicy_id {
387 struct xfrm_selector sel;
392 struct xfrm_user_acquire {
394 xfrm_address_t saddr;
395 struct xfrm_selector sel;
396 struct xfrm_userpolicy_info policy;
403 struct xfrm_user_expire {
404 struct xfrm_usersa_info state;
408 struct xfrm_user_polexpire {
409 struct xfrm_userpolicy_info pol;
413 struct xfrm_usersa_flush {
417 struct xfrm_user_report {
419 struct xfrm_selector sel;
422 /* Used by MIGRATE to pass addresses IKE should use to perform
423 * SA negotiation with the peer */
424 struct xfrm_user_kmaddress {
425 xfrm_address_t local;
426 xfrm_address_t remote;
431 struct xfrm_user_migrate {
432 xfrm_address_t old_daddr;
433 xfrm_address_t old_saddr;
434 xfrm_address_t new_daddr;
435 xfrm_address_t new_saddr;
444 struct xfrm_user_mapping {
445 struct xfrm_usersa_id id;
447 xfrm_address_t old_saddr;
448 xfrm_address_t new_saddr;
454 /* backwards compatibility for userspace */
455 #define XFRMGRP_ACQUIRE 1
456 #define XFRMGRP_EXPIRE 2
458 #define XFRMGRP_POLICY 8
459 #define XFRMGRP_REPORT 0x20
464 #define XFRMNLGRP_NONE XFRMNLGRP_NONE
466 #define XFRMNLGRP_ACQUIRE XFRMNLGRP_ACQUIRE
468 #define XFRMNLGRP_EXPIRE XFRMNLGRP_EXPIRE
470 #define XFRMNLGRP_SA XFRMNLGRP_SA
472 #define XFRMNLGRP_POLICY XFRMNLGRP_POLICY
474 #define XFRMNLGRP_AEVENTS XFRMNLGRP_AEVENTS
476 #define XFRMNLGRP_REPORT XFRMNLGRP_REPORT
478 #define XFRMNLGRP_MIGRATE XFRMNLGRP_MIGRATE
480 #define XFRMNLGRP_MAPPING XFRMNLGRP_MAPPING
483 #define XFRMNLGRP_MAX (__XFRMNLGRP_MAX - 1)
485 #endif /* _LINUX_XFRM_H */