1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
6 #include <linux/types.h>
8 /* All of the structures in this file may not change size as they are
9 * passed into the kernel from userspace via netlink sockets.
12 /* Structure to encapsulate addresses. I do not want to use
13 * "standard" structure. My apologies.
21 /* Ident of a specific xfrm_state. It is used on input to lookup
22 * the state by (spi,daddr,ah/esp) or to store information about
23 * spi, protocol and tunnel address on output.
39 /* Security Context Domains of Interpretation */
40 #define XFRM_SC_DOI_RESERVED 0
41 #define XFRM_SC_DOI_LSM 1
43 /* Security Context Algorithms */
44 #define XFRM_SC_ALG_RESERVED 0
45 #define XFRM_SC_ALG_SELINUX 1
47 /* Selector, used as selector both on policy rules (SPD) and SAs. */
49 struct xfrm_selector {
61 __kernel_uid32_t user;
64 #define XFRM_INF (~(__u64)0)
66 struct xfrm_lifetime_cfg {
67 __u64 soft_byte_limit;
68 __u64 hard_byte_limit;
69 __u64 soft_packet_limit;
70 __u64 hard_packet_limit;
71 __u64 soft_add_expires_seconds;
72 __u64 hard_add_expires_seconds;
73 __u64 soft_use_expires_seconds;
74 __u64 hard_use_expires_seconds;
77 struct xfrm_lifetime_cur {
84 struct xfrm_replay_state {
90 #define XFRMA_REPLAY_ESN_MAX 4096
92 struct xfrm_replay_state_esn {
104 unsigned int alg_key_len; /* in bits */
108 struct xfrm_algo_auth {
110 unsigned int alg_key_len; /* in bits */
111 unsigned int alg_trunc_len; /* in bits */
115 struct xfrm_algo_aead {
117 unsigned int alg_key_len; /* in bits */
118 unsigned int alg_icv_len; /* in bits */
125 __u32 integrity_failed;
129 XFRM_POLICY_TYPE_MAIN = 0,
130 XFRM_POLICY_TYPE_SUB = 1,
131 XFRM_POLICY_TYPE_MAX = 2,
132 XFRM_POLICY_TYPE_ANY = 255
139 XFRM_POLICY_MASK = 3,
144 XFRM_SHARE_ANY, /* No limitations */
145 XFRM_SHARE_SESSION, /* For this session only */
146 XFRM_SHARE_USER, /* For this user only */
147 XFRM_SHARE_UNIQUE /* Use once */
150 #define XFRM_MODE_TRANSPORT 0
151 #define XFRM_MODE_TUNNEL 1
152 #define XFRM_MODE_ROUTEOPTIMIZATION 2
153 #define XFRM_MODE_IN_TRIGGER 3
154 #define XFRM_MODE_BEET 4
155 #define XFRM_MODE_MAX 5
157 /* Netlink configuration messages. */
159 XFRM_MSG_BASE = 0x10,
161 XFRM_MSG_NEWSA = 0x10,
162 #define XFRM_MSG_NEWSA XFRM_MSG_NEWSA
164 #define XFRM_MSG_DELSA XFRM_MSG_DELSA
166 #define XFRM_MSG_GETSA XFRM_MSG_GETSA
169 #define XFRM_MSG_NEWPOLICY XFRM_MSG_NEWPOLICY
171 #define XFRM_MSG_DELPOLICY XFRM_MSG_DELPOLICY
173 #define XFRM_MSG_GETPOLICY XFRM_MSG_GETPOLICY
176 #define XFRM_MSG_ALLOCSPI XFRM_MSG_ALLOCSPI
178 #define XFRM_MSG_ACQUIRE XFRM_MSG_ACQUIRE
180 #define XFRM_MSG_EXPIRE XFRM_MSG_EXPIRE
183 #define XFRM_MSG_UPDPOLICY XFRM_MSG_UPDPOLICY
185 #define XFRM_MSG_UPDSA XFRM_MSG_UPDSA
188 #define XFRM_MSG_POLEXPIRE XFRM_MSG_POLEXPIRE
191 #define XFRM_MSG_FLUSHSA XFRM_MSG_FLUSHSA
192 XFRM_MSG_FLUSHPOLICY,
193 #define XFRM_MSG_FLUSHPOLICY XFRM_MSG_FLUSHPOLICY
196 #define XFRM_MSG_NEWAE XFRM_MSG_NEWAE
198 #define XFRM_MSG_GETAE XFRM_MSG_GETAE
201 #define XFRM_MSG_REPORT XFRM_MSG_REPORT
204 #define XFRM_MSG_MIGRATE XFRM_MSG_MIGRATE
207 #define XFRM_MSG_NEWSADINFO XFRM_MSG_NEWSADINFO
209 #define XFRM_MSG_GETSADINFO XFRM_MSG_GETSADINFO
212 #define XFRM_MSG_NEWSPDINFO XFRM_MSG_NEWSPDINFO
214 #define XFRM_MSG_GETSPDINFO XFRM_MSG_GETSPDINFO
217 #define XFRM_MSG_MAPPING XFRM_MSG_MAPPING
220 #define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1)
222 #define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE)
225 * Generic LSM security context for comunicating to user space
226 * NOTE: Same format as sadb_x_sec_ctx
228 struct xfrm_user_sec_ctx {
231 __u8 ctx_alg; /* LSMs: e.g., selinux == 1 */
236 struct xfrm_user_tmpl {
239 xfrm_address_t saddr;
249 struct xfrm_encap_tmpl {
253 xfrm_address_t encap_oa;
257 enum xfrm_ae_ftype_t {
259 XFRM_AE_RTHR=1, /* replay threshold*/
260 XFRM_AE_RVAL=2, /* replay value */
261 XFRM_AE_LVAL=4, /* lifetime value */
262 XFRM_AE_ETHR=8, /* expiry timer threshold */
263 XFRM_AE_CR=16, /* Event cause is replay update */
264 XFRM_AE_CE=32, /* Event cause is timer expiry */
265 XFRM_AE_CU=64, /* Event cause is policy update */
268 #define XFRM_AE_MAX (__XFRM_AE_MAX - 1)
271 struct xfrm_userpolicy_type {
277 /* Netlink message attributes. */
278 enum xfrm_attr_type_t {
280 XFRMA_ALG_AUTH, /* struct xfrm_algo */
281 XFRMA_ALG_CRYPT, /* struct xfrm_algo */
282 XFRMA_ALG_COMP, /* struct xfrm_algo */
283 XFRMA_ENCAP, /* struct xfrm_algo + struct xfrm_encap_tmpl */
284 XFRMA_TMPL, /* 1 or more struct xfrm_user_tmpl */
285 XFRMA_SA, /* struct xfrm_usersa_info */
286 XFRMA_POLICY, /*struct xfrm_userpolicy_info */
287 XFRMA_SEC_CTX, /* struct xfrm_sec_ctx */
292 XFRMA_SRCADDR, /* xfrm_address_t */
293 XFRMA_COADDR, /* xfrm_address_t */
294 XFRMA_LASTUSED, /* unsigned long */
295 XFRMA_POLICY_TYPE, /* struct xfrm_userpolicy_type */
297 XFRMA_ALG_AEAD, /* struct xfrm_algo_aead */
298 XFRMA_KMADDRESS, /* struct xfrm_user_kmaddress */
299 XFRMA_ALG_AUTH_TRUNC, /* struct xfrm_algo_auth */
300 XFRMA_MARK, /* struct xfrm_mark */
301 XFRMA_TFCPAD, /* __u32 */
302 XFRMA_REPLAY_ESN_VAL, /* struct xfrm_replay_state_esn */
303 XFRMA_SA_EXTRA_FLAGS, /* __u32 */
304 XFRMA_PROTO, /* __u8 */
305 XFRMA_ADDRESS_FILTER, /* struct xfrm_address_filter */
307 XFRMA_OFFLOAD_DEV, /* struct xfrm_state_offload */
308 XFRMA_OUTPUT_MARK, /* __u32 */
311 #define XFRMA_MAX (__XFRMA_MAX - 1)
319 enum xfrm_sadattr_type_t {
325 #define XFRMA_SAD_MAX (__XFRMA_SAD_MAX - 1)
328 struct xfrmu_sadhinfo {
329 __u32 sadhcnt; /* current hash bkts */
330 __u32 sadhmcnt; /* max allowed hash bkts */
333 enum xfrm_spdattr_type_t {
337 XFRMA_SPD_IPV4_HTHRESH,
338 XFRMA_SPD_IPV6_HTHRESH,
341 #define XFRMA_SPD_MAX (__XFRMA_SPD_MAX - 1)
344 struct xfrmu_spdinfo {
353 struct xfrmu_spdhinfo {
358 struct xfrmu_spdhthresh {
363 struct xfrm_usersa_info {
364 struct xfrm_selector sel;
366 xfrm_address_t saddr;
367 struct xfrm_lifetime_cfg lft;
368 struct xfrm_lifetime_cur curlft;
369 struct xfrm_stats stats;
373 __u8 mode; /* XFRM_MODE_xxx */
376 #define XFRM_STATE_NOECN 1
377 #define XFRM_STATE_DECAP_DSCP 2
378 #define XFRM_STATE_NOPMTUDISC 4
379 #define XFRM_STATE_WILDRECV 8
380 #define XFRM_STATE_ICMP 16
381 #define XFRM_STATE_AF_UNSPEC 32
382 #define XFRM_STATE_ALIGN4 64
383 #define XFRM_STATE_ESN 128
386 #define XFRM_SA_XFLAG_DONT_ENCAP_DSCP 1
388 struct xfrm_usersa_id {
389 xfrm_address_t daddr;
395 struct xfrm_aevent_id {
396 struct xfrm_usersa_id sa_id;
397 xfrm_address_t saddr;
402 struct xfrm_userspi_info {
403 struct xfrm_usersa_info info;
408 struct xfrm_userpolicy_info {
409 struct xfrm_selector sel;
410 struct xfrm_lifetime_cfg lft;
411 struct xfrm_lifetime_cur curlft;
416 #define XFRM_POLICY_ALLOW 0
417 #define XFRM_POLICY_BLOCK 1
419 #define XFRM_POLICY_LOCALOK 1 /* Allow user to override global policy */
420 /* Automatically expand selector to include matching ICMP payloads. */
421 #define XFRM_POLICY_ICMP 2
425 struct xfrm_userpolicy_id {
426 struct xfrm_selector sel;
431 struct xfrm_user_acquire {
433 xfrm_address_t saddr;
434 struct xfrm_selector sel;
435 struct xfrm_userpolicy_info policy;
442 struct xfrm_user_expire {
443 struct xfrm_usersa_info state;
447 struct xfrm_user_polexpire {
448 struct xfrm_userpolicy_info pol;
452 struct xfrm_usersa_flush {
456 struct xfrm_user_report {
458 struct xfrm_selector sel;
461 /* Used by MIGRATE to pass addresses IKE should use to perform
462 * SA negotiation with the peer */
463 struct xfrm_user_kmaddress {
464 xfrm_address_t local;
465 xfrm_address_t remote;
470 struct xfrm_user_migrate {
471 xfrm_address_t old_daddr;
472 xfrm_address_t old_saddr;
473 xfrm_address_t new_daddr;
474 xfrm_address_t new_saddr;
483 struct xfrm_user_mapping {
484 struct xfrm_usersa_id id;
486 xfrm_address_t old_saddr;
487 xfrm_address_t new_saddr;
492 struct xfrm_address_filter {
493 xfrm_address_t saddr;
494 xfrm_address_t daddr;
500 struct xfrm_user_offload {
504 #define XFRM_OFFLOAD_IPV6 1
505 #define XFRM_OFFLOAD_INBOUND 2
508 /* backwards compatibility for userspace */
509 #define XFRMGRP_ACQUIRE 1
510 #define XFRMGRP_EXPIRE 2
512 #define XFRMGRP_POLICY 8
513 #define XFRMGRP_REPORT 0x20
518 #define XFRMNLGRP_NONE XFRMNLGRP_NONE
520 #define XFRMNLGRP_ACQUIRE XFRMNLGRP_ACQUIRE
522 #define XFRMNLGRP_EXPIRE XFRMNLGRP_EXPIRE
524 #define XFRMNLGRP_SA XFRMNLGRP_SA
526 #define XFRMNLGRP_POLICY XFRMNLGRP_POLICY
528 #define XFRMNLGRP_AEVENTS XFRMNLGRP_AEVENTS
530 #define XFRMNLGRP_REPORT XFRMNLGRP_REPORT
532 #define XFRMNLGRP_MIGRATE XFRMNLGRP_MIGRATE
534 #define XFRMNLGRP_MAPPING XFRMNLGRP_MAPPING
537 #define XFRMNLGRP_MAX (__XFRMNLGRP_MAX - 1)
539 #endif /* _LINUX_XFRM_H */