5 #include <linux/types.h>
7 /* All of the structures in this file may not change size as they are
8 * passed into the kernel from userspace via netlink sockets.
11 /* Structure to encapsulate addresses. I do not want to use
12 * "standard" structure. My apologies.
20 /* Ident of a specific xfrm_state. It is used on input to lookup
21 * the state by (spi,daddr,ah/esp) or to store information about
22 * 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. */
48 struct xfrm_selector {
60 __kernel_uid32_t user;
63 #define XFRM_INF (~(__u64)0)
65 struct xfrm_lifetime_cfg {
66 __u64 soft_byte_limit;
67 __u64 hard_byte_limit;
68 __u64 soft_packet_limit;
69 __u64 hard_packet_limit;
70 __u64 soft_add_expires_seconds;
71 __u64 hard_add_expires_seconds;
72 __u64 soft_use_expires_seconds;
73 __u64 hard_use_expires_seconds;
76 struct xfrm_lifetime_cur {
83 struct xfrm_replay_state {
89 #define XFRMA_REPLAY_ESN_MAX 4096
91 struct xfrm_replay_state_esn {
103 unsigned int alg_key_len; /* in bits */
107 struct xfrm_algo_auth {
109 unsigned int alg_key_len; /* in bits */
110 unsigned int alg_trunc_len; /* in bits */
114 struct xfrm_algo_aead {
116 unsigned int alg_key_len; /* in bits */
117 unsigned int alg_icv_len; /* in bits */
124 __u32 integrity_failed;
128 XFRM_POLICY_TYPE_MAIN = 0,
129 XFRM_POLICY_TYPE_SUB = 1,
130 XFRM_POLICY_TYPE_MAX = 2,
131 XFRM_POLICY_TYPE_ANY = 255
138 XFRM_POLICY_MASK = 3,
143 XFRM_SHARE_ANY, /* No limitations */
144 XFRM_SHARE_SESSION, /* For this session only */
145 XFRM_SHARE_USER, /* For this user only */
146 XFRM_SHARE_UNIQUE /* Use once */
149 #define XFRM_MODE_TRANSPORT 0
150 #define XFRM_MODE_TUNNEL 1
151 #define XFRM_MODE_ROUTEOPTIMIZATION 2
152 #define XFRM_MODE_IN_TRIGGER 3
153 #define XFRM_MODE_BEET 4
154 #define XFRM_MODE_MAX 5
156 /* Netlink configuration messages. */
158 XFRM_MSG_BASE = 0x10,
160 XFRM_MSG_NEWSA = 0x10,
161 #define XFRM_MSG_NEWSA XFRM_MSG_NEWSA
163 #define XFRM_MSG_DELSA XFRM_MSG_DELSA
165 #define XFRM_MSG_GETSA XFRM_MSG_GETSA
168 #define XFRM_MSG_NEWPOLICY XFRM_MSG_NEWPOLICY
170 #define XFRM_MSG_DELPOLICY XFRM_MSG_DELPOLICY
172 #define XFRM_MSG_GETPOLICY XFRM_MSG_GETPOLICY
175 #define XFRM_MSG_ALLOCSPI XFRM_MSG_ALLOCSPI
177 #define XFRM_MSG_ACQUIRE XFRM_MSG_ACQUIRE
179 #define XFRM_MSG_EXPIRE XFRM_MSG_EXPIRE
182 #define XFRM_MSG_UPDPOLICY XFRM_MSG_UPDPOLICY
184 #define XFRM_MSG_UPDSA XFRM_MSG_UPDSA
187 #define XFRM_MSG_POLEXPIRE XFRM_MSG_POLEXPIRE
190 #define XFRM_MSG_FLUSHSA XFRM_MSG_FLUSHSA
191 XFRM_MSG_FLUSHPOLICY,
192 #define XFRM_MSG_FLUSHPOLICY XFRM_MSG_FLUSHPOLICY
195 #define XFRM_MSG_NEWAE XFRM_MSG_NEWAE
197 #define XFRM_MSG_GETAE XFRM_MSG_GETAE
200 #define XFRM_MSG_REPORT XFRM_MSG_REPORT
203 #define XFRM_MSG_MIGRATE XFRM_MSG_MIGRATE
206 #define XFRM_MSG_NEWSADINFO XFRM_MSG_NEWSADINFO
208 #define XFRM_MSG_GETSADINFO XFRM_MSG_GETSADINFO
211 #define XFRM_MSG_NEWSPDINFO XFRM_MSG_NEWSPDINFO
213 #define XFRM_MSG_GETSPDINFO XFRM_MSG_GETSPDINFO
216 #define XFRM_MSG_MAPPING XFRM_MSG_MAPPING
219 #define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1)
221 #define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE)
224 * Generic LSM security context for comunicating to user space
225 * NOTE: Same format as sadb_x_sec_ctx
227 struct xfrm_user_sec_ctx {
230 __u8 ctx_alg; /* LSMs: e.g., selinux == 1 */
235 struct xfrm_user_tmpl {
238 xfrm_address_t saddr;
248 struct xfrm_encap_tmpl {
252 xfrm_address_t encap_oa;
256 enum xfrm_ae_ftype_t {
258 XFRM_AE_RTHR=1, /* replay threshold*/
259 XFRM_AE_RVAL=2, /* replay value */
260 XFRM_AE_LVAL=4, /* lifetime value */
261 XFRM_AE_ETHR=8, /* expiry timer threshold */
262 XFRM_AE_CR=16, /* Event cause is replay update */
263 XFRM_AE_CE=32, /* Event cause is timer expiry */
264 XFRM_AE_CU=64, /* Event cause is policy update */
267 #define XFRM_AE_MAX (__XFRM_AE_MAX - 1)
270 struct xfrm_userpolicy_type {
276 /* Netlink message attributes. */
277 enum xfrm_attr_type_t {
279 XFRMA_ALG_AUTH, /* struct xfrm_algo */
280 XFRMA_ALG_CRYPT, /* struct xfrm_algo */
281 XFRMA_ALG_COMP, /* struct xfrm_algo */
282 XFRMA_ENCAP, /* struct xfrm_algo + struct xfrm_encap_tmpl */
283 XFRMA_TMPL, /* 1 or more struct xfrm_user_tmpl */
284 XFRMA_SA, /* struct xfrm_usersa_info */
285 XFRMA_POLICY, /*struct xfrm_userpolicy_info */
286 XFRMA_SEC_CTX, /* struct xfrm_sec_ctx */
291 XFRMA_SRCADDR, /* xfrm_address_t */
292 XFRMA_COADDR, /* xfrm_address_t */
293 XFRMA_LASTUSED, /* unsigned long */
294 XFRMA_POLICY_TYPE, /* struct xfrm_userpolicy_type */
296 XFRMA_ALG_AEAD, /* struct xfrm_algo_aead */
297 XFRMA_KMADDRESS, /* struct xfrm_user_kmaddress */
298 XFRMA_ALG_AUTH_TRUNC, /* struct xfrm_algo_auth */
299 XFRMA_MARK, /* struct xfrm_mark */
300 XFRMA_TFCPAD, /* __u32 */
301 XFRMA_REPLAY_ESN_VAL, /* struct xfrm_replay_esn */
302 XFRMA_SA_EXTRA_FLAGS, /* __u32 */
303 XFRMA_PROTO, /* __u8 */
304 XFRMA_ADDRESS_FILTER, /* struct xfrm_address_filter */
307 #define XFRMA_MAX (__XFRMA_MAX - 1)
315 enum xfrm_sadattr_type_t {
321 #define XFRMA_SAD_MAX (__XFRMA_SAD_MAX - 1)
324 struct xfrmu_sadhinfo {
325 __u32 sadhcnt; /* current hash bkts */
326 __u32 sadhmcnt; /* max allowed hash bkts */
329 enum xfrm_spdattr_type_t {
333 XFRMA_SPD_IPV4_HTHRESH,
334 XFRMA_SPD_IPV6_HTHRESH,
337 #define XFRMA_SPD_MAX (__XFRMA_SPD_MAX - 1)
340 struct xfrmu_spdinfo {
349 struct xfrmu_spdhinfo {
354 struct xfrmu_spdhthresh {
359 struct xfrm_usersa_info {
360 struct xfrm_selector sel;
362 xfrm_address_t saddr;
363 struct xfrm_lifetime_cfg lft;
364 struct xfrm_lifetime_cur curlft;
365 struct xfrm_stats stats;
369 __u8 mode; /* XFRM_MODE_xxx */
372 #define XFRM_STATE_NOECN 1
373 #define XFRM_STATE_DECAP_DSCP 2
374 #define XFRM_STATE_NOPMTUDISC 4
375 #define XFRM_STATE_WILDRECV 8
376 #define XFRM_STATE_ICMP 16
377 #define XFRM_STATE_AF_UNSPEC 32
378 #define XFRM_STATE_ALIGN4 64
379 #define XFRM_STATE_ESN 128
382 #define XFRM_SA_XFLAG_DONT_ENCAP_DSCP 1
384 struct xfrm_usersa_id {
385 xfrm_address_t daddr;
391 struct xfrm_aevent_id {
392 struct xfrm_usersa_id sa_id;
393 xfrm_address_t saddr;
398 struct xfrm_userspi_info {
399 struct xfrm_usersa_info info;
404 struct xfrm_userpolicy_info {
405 struct xfrm_selector sel;
406 struct xfrm_lifetime_cfg lft;
407 struct xfrm_lifetime_cur curlft;
412 #define XFRM_POLICY_ALLOW 0
413 #define XFRM_POLICY_BLOCK 1
415 #define XFRM_POLICY_LOCALOK 1 /* Allow user to override global policy */
416 /* Automatically expand selector to include matching ICMP payloads. */
417 #define XFRM_POLICY_ICMP 2
421 struct xfrm_userpolicy_id {
422 struct xfrm_selector sel;
427 struct xfrm_user_acquire {
429 xfrm_address_t saddr;
430 struct xfrm_selector sel;
431 struct xfrm_userpolicy_info policy;
438 struct xfrm_user_expire {
439 struct xfrm_usersa_info state;
443 struct xfrm_user_polexpire {
444 struct xfrm_userpolicy_info pol;
448 struct xfrm_usersa_flush {
452 struct xfrm_user_report {
454 struct xfrm_selector sel;
457 /* Used by MIGRATE to pass addresses IKE should use to perform
458 * SA negotiation with the peer */
459 struct xfrm_user_kmaddress {
460 xfrm_address_t local;
461 xfrm_address_t remote;
466 struct xfrm_user_migrate {
467 xfrm_address_t old_daddr;
468 xfrm_address_t old_saddr;
469 xfrm_address_t new_daddr;
470 xfrm_address_t new_saddr;
479 struct xfrm_user_mapping {
480 struct xfrm_usersa_id id;
482 xfrm_address_t old_saddr;
483 xfrm_address_t new_saddr;
488 struct xfrm_address_filter {
489 xfrm_address_t saddr;
490 xfrm_address_t daddr;
497 /* backwards compatibility for userspace */
498 #define XFRMGRP_ACQUIRE 1
499 #define XFRMGRP_EXPIRE 2
501 #define XFRMGRP_POLICY 8
502 #define XFRMGRP_REPORT 0x20
507 #define XFRMNLGRP_NONE XFRMNLGRP_NONE
509 #define XFRMNLGRP_ACQUIRE XFRMNLGRP_ACQUIRE
511 #define XFRMNLGRP_EXPIRE XFRMNLGRP_EXPIRE
513 #define XFRMNLGRP_SA XFRMNLGRP_SA
515 #define XFRMNLGRP_POLICY XFRMNLGRP_POLICY
517 #define XFRMNLGRP_AEVENTS XFRMNLGRP_AEVENTS
519 #define XFRMNLGRP_REPORT XFRMNLGRP_REPORT
521 #define XFRMNLGRP_MIGRATE XFRMNLGRP_MIGRATE
523 #define XFRMNLGRP_MAPPING XFRMNLGRP_MAPPING
526 #define XFRMNLGRP_MAX (__XFRMNLGRP_MAX - 1)
528 #endif /* _LINUX_XFRM_H */