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.
18 /* Ident of a specific xfrm_state. It is used on input to lookup
19 * the state by (spi,daddr,ah/esp) or to store information about
20 * spi, protocol and tunnel address on output.
36 /* Security Context Domains of Interpretation */
37 #define XFRM_SC_DOI_RESERVED 0
38 #define XFRM_SC_DOI_LSM 1
40 /* Security Context Algorithms */
41 #define XFRM_SC_ALG_RESERVED 0
42 #define XFRM_SC_ALG_SELINUX 1
44 /* Selector, used as selector both on policy rules (SPD) and SAs. */
46 struct xfrm_selector {
58 __kernel_uid32_t user;
61 #define XFRM_INF (~(__u64)0)
63 struct xfrm_lifetime_cfg {
64 __u64 soft_byte_limit;
65 __u64 hard_byte_limit;
66 __u64 soft_packet_limit;
67 __u64 hard_packet_limit;
68 __u64 soft_add_expires_seconds;
69 __u64 hard_add_expires_seconds;
70 __u64 soft_use_expires_seconds;
71 __u64 hard_use_expires_seconds;
74 struct xfrm_lifetime_cur {
81 struct xfrm_replay_state {
89 unsigned int alg_key_len; /* in bits */
93 struct xfrm_algo_aead {
95 unsigned int alg_key_len; /* in bits */
96 unsigned int alg_icv_len; /* in bits */
103 __u32 integrity_failed;
107 XFRM_POLICY_TYPE_MAIN = 0,
108 XFRM_POLICY_TYPE_SUB = 1,
109 XFRM_POLICY_TYPE_MAX = 2,
110 XFRM_POLICY_TYPE_ANY = 255
117 XFRM_POLICY_MASK = 3,
122 XFRM_SHARE_ANY, /* No limitations */
123 XFRM_SHARE_SESSION, /* For this session only */
124 XFRM_SHARE_USER, /* For this user only */
125 XFRM_SHARE_UNIQUE /* Use once */
128 #define XFRM_MODE_TRANSPORT 0
129 #define XFRM_MODE_TUNNEL 1
130 #define XFRM_MODE_ROUTEOPTIMIZATION 2
131 #define XFRM_MODE_IN_TRIGGER 3
132 #define XFRM_MODE_BEET 4
133 #define XFRM_MODE_MAX 5
135 /* Netlink configuration messages. */
137 XFRM_MSG_BASE = 0x10,
139 XFRM_MSG_NEWSA = 0x10,
140 #define XFRM_MSG_NEWSA XFRM_MSG_NEWSA
142 #define XFRM_MSG_DELSA XFRM_MSG_DELSA
144 #define XFRM_MSG_GETSA XFRM_MSG_GETSA
147 #define XFRM_MSG_NEWPOLICY XFRM_MSG_NEWPOLICY
149 #define XFRM_MSG_DELPOLICY XFRM_MSG_DELPOLICY
151 #define XFRM_MSG_GETPOLICY XFRM_MSG_GETPOLICY
154 #define XFRM_MSG_ALLOCSPI XFRM_MSG_ALLOCSPI
156 #define XFRM_MSG_ACQUIRE XFRM_MSG_ACQUIRE
158 #define XFRM_MSG_EXPIRE XFRM_MSG_EXPIRE
161 #define XFRM_MSG_UPDPOLICY XFRM_MSG_UPDPOLICY
163 #define XFRM_MSG_UPDSA XFRM_MSG_UPDSA
166 #define XFRM_MSG_POLEXPIRE XFRM_MSG_POLEXPIRE
169 #define XFRM_MSG_FLUSHSA XFRM_MSG_FLUSHSA
170 XFRM_MSG_FLUSHPOLICY,
171 #define XFRM_MSG_FLUSHPOLICY XFRM_MSG_FLUSHPOLICY
174 #define XFRM_MSG_NEWAE XFRM_MSG_NEWAE
176 #define XFRM_MSG_GETAE XFRM_MSG_GETAE
179 #define XFRM_MSG_REPORT XFRM_MSG_REPORT
182 #define XFRM_MSG_MIGRATE XFRM_MSG_MIGRATE
185 #define XFRM_MSG_NEWSADINFO XFRM_MSG_NEWSADINFO
187 #define XFRM_MSG_GETSADINFO XFRM_MSG_GETSADINFO
190 #define XFRM_MSG_NEWSPDINFO XFRM_MSG_NEWSPDINFO
192 #define XFRM_MSG_GETSPDINFO XFRM_MSG_GETSPDINFO
195 #define XFRM_MSG_MAPPING XFRM_MSG_MAPPING
198 #define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1)
200 #define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE)
203 * Generic LSM security context for comunicating to user space
204 * NOTE: Same format as sadb_x_sec_ctx
206 struct xfrm_user_sec_ctx {
209 __u8 ctx_alg; /* LSMs: e.g., selinux == 1 */
214 struct xfrm_user_tmpl {
217 xfrm_address_t saddr;
227 struct xfrm_encap_tmpl {
231 xfrm_address_t encap_oa;
235 enum xfrm_ae_ftype_t {
237 XFRM_AE_RTHR=1, /* replay threshold*/
238 XFRM_AE_RVAL=2, /* replay value */
239 XFRM_AE_LVAL=4, /* lifetime value */
240 XFRM_AE_ETHR=8, /* expiry timer threshold */
241 XFRM_AE_CR=16, /* Event cause is replay update */
242 XFRM_AE_CE=32, /* Event cause is timer expiry */
243 XFRM_AE_CU=64, /* Event cause is policy update */
246 #define XFRM_AE_MAX (__XFRM_AE_MAX - 1)
249 struct xfrm_userpolicy_type {
255 /* Netlink message attributes. */
256 enum xfrm_attr_type_t {
258 XFRMA_ALG_AUTH, /* struct xfrm_algo */
259 XFRMA_ALG_CRYPT, /* struct xfrm_algo */
260 XFRMA_ALG_COMP, /* struct xfrm_algo */
261 XFRMA_ENCAP, /* struct xfrm_algo + struct xfrm_encap_tmpl */
262 XFRMA_TMPL, /* 1 or more struct xfrm_user_tmpl */
265 XFRMA_SEC_CTX, /* struct xfrm_sec_ctx */
270 XFRMA_SRCADDR, /* xfrm_address_t */
271 XFRMA_COADDR, /* xfrm_address_t */
273 XFRMA_POLICY_TYPE, /* struct xfrm_userpolicy_type */
275 XFRMA_ALG_AEAD, /* struct xfrm_algo_aead */
276 XFRMA_KMADDRESS, /* struct xfrm_user_kmaddress */
279 #define XFRMA_MAX (__XFRMA_MAX - 1)
282 enum xfrm_sadattr_type_t {
288 #define XFRMA_SAD_MAX (__XFRMA_SAD_MAX - 1)
291 struct xfrmu_sadhinfo {
292 __u32 sadhcnt; /* current hash bkts */
293 __u32 sadhmcnt; /* max allowed hash bkts */
296 enum xfrm_spdattr_type_t {
302 #define XFRMA_SPD_MAX (__XFRMA_SPD_MAX - 1)
305 struct xfrmu_spdinfo {
314 struct xfrmu_spdhinfo {
319 struct xfrm_usersa_info {
320 struct xfrm_selector sel;
322 xfrm_address_t saddr;
323 struct xfrm_lifetime_cfg lft;
324 struct xfrm_lifetime_cur curlft;
325 struct xfrm_stats stats;
329 __u8 mode; /* XFRM_MODE_xxx */
332 #define XFRM_STATE_NOECN 1
333 #define XFRM_STATE_DECAP_DSCP 2
334 #define XFRM_STATE_NOPMTUDISC 4
335 #define XFRM_STATE_WILDRECV 8
336 #define XFRM_STATE_ICMP 16
337 #define XFRM_STATE_AF_UNSPEC 32
340 struct xfrm_usersa_id {
341 xfrm_address_t daddr;
347 struct xfrm_aevent_id {
348 struct xfrm_usersa_id sa_id;
349 xfrm_address_t saddr;
354 struct xfrm_userspi_info {
355 struct xfrm_usersa_info info;
360 struct xfrm_userpolicy_info {
361 struct xfrm_selector sel;
362 struct xfrm_lifetime_cfg lft;
363 struct xfrm_lifetime_cur curlft;
368 #define XFRM_POLICY_ALLOW 0
369 #define XFRM_POLICY_BLOCK 1
371 #define XFRM_POLICY_LOCALOK 1 /* Allow user to override global policy */
372 /* Automatically expand selector to include matching ICMP payloads. */
373 #define XFRM_POLICY_ICMP 2
377 struct xfrm_userpolicy_id {
378 struct xfrm_selector sel;
383 struct xfrm_user_acquire {
385 xfrm_address_t saddr;
386 struct xfrm_selector sel;
387 struct xfrm_userpolicy_info policy;
394 struct xfrm_user_expire {
395 struct xfrm_usersa_info state;
399 struct xfrm_user_polexpire {
400 struct xfrm_userpolicy_info pol;
404 struct xfrm_usersa_flush {
408 struct xfrm_user_report {
410 struct xfrm_selector sel;
413 /* Used by MIGRATE to pass addresses IKE should use to perform
414 * SA negotiation with the peer */
415 struct xfrm_user_kmaddress {
416 xfrm_address_t local;
417 xfrm_address_t remote;
422 struct xfrm_user_migrate {
423 xfrm_address_t old_daddr;
424 xfrm_address_t old_saddr;
425 xfrm_address_t new_daddr;
426 xfrm_address_t new_saddr;
435 struct xfrm_user_mapping {
436 struct xfrm_usersa_id id;
438 xfrm_address_t old_saddr;
439 xfrm_address_t new_saddr;
445 /* backwards compatibility for userspace */
446 #define XFRMGRP_ACQUIRE 1
447 #define XFRMGRP_EXPIRE 2
449 #define XFRMGRP_POLICY 8
450 #define XFRMGRP_REPORT 0x20
455 #define XFRMNLGRP_NONE XFRMNLGRP_NONE
457 #define XFRMNLGRP_ACQUIRE XFRMNLGRP_ACQUIRE
459 #define XFRMNLGRP_EXPIRE XFRMNLGRP_EXPIRE
461 #define XFRMNLGRP_SA XFRMNLGRP_SA
463 #define XFRMNLGRP_POLICY XFRMNLGRP_POLICY
465 #define XFRMNLGRP_AEVENTS XFRMNLGRP_AEVENTS
467 #define XFRMNLGRP_REPORT XFRMNLGRP_REPORT
469 #define XFRMNLGRP_MIGRATE XFRMNLGRP_MIGRATE
471 #define XFRMNLGRP_MAPPING XFRMNLGRP_MAPPING
474 #define XFRMNLGRP_MAX (__XFRMNLGRP_MAX - 1)
476 #endif /* _LINUX_XFRM_H */