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_SETDEFAULT XFRM_MSG_SETDEFAULT
222 #define XFRM_MSG_GETDEFAULT XFRM_MSG_GETDEFAULT
225 #define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1)
227 #define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE)
230 * Generic LSM security context for comunicating to user space
231 * NOTE: Same format as sadb_x_sec_ctx
233 struct xfrm_user_sec_ctx {
236 __u8 ctx_alg; /* LSMs: e.g., selinux == 1 */
241 struct xfrm_user_tmpl {
244 xfrm_address_t saddr;
254 struct xfrm_encap_tmpl {
258 xfrm_address_t encap_oa;
262 enum xfrm_ae_ftype_t {
264 XFRM_AE_RTHR=1, /* replay threshold*/
265 XFRM_AE_RVAL=2, /* replay value */
266 XFRM_AE_LVAL=4, /* lifetime value */
267 XFRM_AE_ETHR=8, /* expiry timer threshold */
268 XFRM_AE_CR=16, /* Event cause is replay update */
269 XFRM_AE_CE=32, /* Event cause is timer expiry */
270 XFRM_AE_CU=64, /* Event cause is policy update */
273 #define XFRM_AE_MAX (__XFRM_AE_MAX - 1)
276 struct xfrm_userpolicy_type {
282 /* Netlink message attributes. */
283 enum xfrm_attr_type_t {
285 XFRMA_ALG_AUTH, /* struct xfrm_algo */
286 XFRMA_ALG_CRYPT, /* struct xfrm_algo */
287 XFRMA_ALG_COMP, /* struct xfrm_algo */
288 XFRMA_ENCAP, /* struct xfrm_algo + struct xfrm_encap_tmpl */
289 XFRMA_TMPL, /* 1 or more struct xfrm_user_tmpl */
290 XFRMA_SA, /* struct xfrm_usersa_info */
291 XFRMA_POLICY, /*struct xfrm_userpolicy_info */
292 XFRMA_SEC_CTX, /* struct xfrm_sec_ctx */
297 XFRMA_SRCADDR, /* xfrm_address_t */
298 XFRMA_COADDR, /* xfrm_address_t */
299 XFRMA_LASTUSED, /* __u64 */
300 XFRMA_POLICY_TYPE, /* struct xfrm_userpolicy_type */
302 XFRMA_ALG_AEAD, /* struct xfrm_algo_aead */
303 XFRMA_KMADDRESS, /* struct xfrm_user_kmaddress */
304 XFRMA_ALG_AUTH_TRUNC, /* struct xfrm_algo_auth */
305 XFRMA_MARK, /* struct xfrm_mark */
306 XFRMA_TFCPAD, /* __u32 */
307 XFRMA_REPLAY_ESN_VAL, /* struct xfrm_replay_state_esn */
308 XFRMA_SA_EXTRA_FLAGS, /* __u32 */
309 XFRMA_PROTO, /* __u8 */
310 XFRMA_ADDRESS_FILTER, /* struct xfrm_address_filter */
312 XFRMA_OFFLOAD_DEV, /* struct xfrm_user_offload */
313 XFRMA_SET_MARK, /* __u32 */
314 XFRMA_SET_MARK_MASK, /* __u32 */
315 XFRMA_IF_ID, /* __u32 */
316 XFRMA_MTIMER_THRESH, /* __u32 in seconds for input SA */
319 #define XFRMA_OUTPUT_MARK XFRMA_SET_MARK /* Compatibility */
320 #define XFRMA_MAX (__XFRMA_MAX - 1)
328 enum xfrm_sadattr_type_t {
334 #define XFRMA_SAD_MAX (__XFRMA_SAD_MAX - 1)
337 struct xfrmu_sadhinfo {
338 __u32 sadhcnt; /* current hash bkts */
339 __u32 sadhmcnt; /* max allowed hash bkts */
342 enum xfrm_spdattr_type_t {
346 XFRMA_SPD_IPV4_HTHRESH,
347 XFRMA_SPD_IPV6_HTHRESH,
350 #define XFRMA_SPD_MAX (__XFRMA_SPD_MAX - 1)
353 struct xfrmu_spdinfo {
362 struct xfrmu_spdhinfo {
367 struct xfrmu_spdhthresh {
372 struct xfrm_usersa_info {
373 struct xfrm_selector sel;
375 xfrm_address_t saddr;
376 struct xfrm_lifetime_cfg lft;
377 struct xfrm_lifetime_cur curlft;
378 struct xfrm_stats stats;
382 __u8 mode; /* XFRM_MODE_xxx */
385 #define XFRM_STATE_NOECN 1
386 #define XFRM_STATE_DECAP_DSCP 2
387 #define XFRM_STATE_NOPMTUDISC 4
388 #define XFRM_STATE_WILDRECV 8
389 #define XFRM_STATE_ICMP 16
390 #define XFRM_STATE_AF_UNSPEC 32
391 #define XFRM_STATE_ALIGN4 64
392 #define XFRM_STATE_ESN 128
395 #define XFRM_SA_XFLAG_DONT_ENCAP_DSCP 1
396 #define XFRM_SA_XFLAG_OSEQ_MAY_WRAP 2
398 struct xfrm_usersa_id {
399 xfrm_address_t daddr;
405 struct xfrm_aevent_id {
406 struct xfrm_usersa_id sa_id;
407 xfrm_address_t saddr;
412 struct xfrm_userspi_info {
413 struct xfrm_usersa_info info;
418 struct xfrm_userpolicy_info {
419 struct xfrm_selector sel;
420 struct xfrm_lifetime_cfg lft;
421 struct xfrm_lifetime_cur curlft;
426 #define XFRM_POLICY_ALLOW 0
427 #define XFRM_POLICY_BLOCK 1
429 #define XFRM_POLICY_LOCALOK 1 /* Allow user to override global policy */
430 /* Automatically expand selector to include matching ICMP payloads. */
431 #define XFRM_POLICY_ICMP 2
435 struct xfrm_userpolicy_id {
436 struct xfrm_selector sel;
441 struct xfrm_user_acquire {
443 xfrm_address_t saddr;
444 struct xfrm_selector sel;
445 struct xfrm_userpolicy_info policy;
452 struct xfrm_user_expire {
453 struct xfrm_usersa_info state;
457 struct xfrm_user_polexpire {
458 struct xfrm_userpolicy_info pol;
462 struct xfrm_usersa_flush {
466 struct xfrm_user_report {
468 struct xfrm_selector sel;
471 /* Used by MIGRATE to pass addresses IKE should use to perform
472 * SA negotiation with the peer */
473 struct xfrm_user_kmaddress {
474 xfrm_address_t local;
475 xfrm_address_t remote;
480 struct xfrm_user_migrate {
481 xfrm_address_t old_daddr;
482 xfrm_address_t old_saddr;
483 xfrm_address_t new_daddr;
484 xfrm_address_t new_saddr;
493 struct xfrm_user_mapping {
494 struct xfrm_usersa_id id;
496 xfrm_address_t old_saddr;
497 xfrm_address_t new_saddr;
502 struct xfrm_address_filter {
503 xfrm_address_t saddr;
504 xfrm_address_t daddr;
510 struct xfrm_user_offload {
514 /* This flag was exposed without any kernel code that supports it.
515 * Unfortunately, strongswan has the code that sets this flag,
516 * which makes it impossible to reuse this bit.
518 * So leave it here to make sure that it won't be reused by mistake.
520 #define XFRM_OFFLOAD_IPV6 1
521 #define XFRM_OFFLOAD_INBOUND 2
523 struct xfrm_userpolicy_default {
524 #define XFRM_USERPOLICY_UNSPEC 0
525 #define XFRM_USERPOLICY_BLOCK 1
526 #define XFRM_USERPOLICY_ACCEPT 2
533 /* backwards compatibility for userspace */
534 #define XFRMGRP_ACQUIRE 1
535 #define XFRMGRP_EXPIRE 2
537 #define XFRMGRP_POLICY 8
538 #define XFRMGRP_REPORT 0x20
543 #define XFRMNLGRP_NONE XFRMNLGRP_NONE
545 #define XFRMNLGRP_ACQUIRE XFRMNLGRP_ACQUIRE
547 #define XFRMNLGRP_EXPIRE XFRMNLGRP_EXPIRE
549 #define XFRMNLGRP_SA XFRMNLGRP_SA
551 #define XFRMNLGRP_POLICY XFRMNLGRP_POLICY
553 #define XFRMNLGRP_AEVENTS XFRMNLGRP_AEVENTS
555 #define XFRMNLGRP_REPORT XFRMNLGRP_REPORT
557 #define XFRMNLGRP_MIGRATE XFRMNLGRP_MIGRATE
559 #define XFRMNLGRP_MAPPING XFRMNLGRP_MAPPING
562 #define XFRMNLGRP_MAX (__XFRMNLGRP_MAX - 1)
564 #endif /* _LINUX_XFRM_H */