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 int alg_key_len; /* in bits */
102 __u32 integrity_failed;
115 XFRM_SHARE_ANY, /* No limitations */
116 XFRM_SHARE_SESSION, /* For this session only */
117 XFRM_SHARE_USER, /* For this user only */
118 XFRM_SHARE_UNIQUE /* Use once */
121 /* Netlink configuration messages. */
123 XFRM_MSG_BASE = 0x10,
125 XFRM_MSG_NEWSA = 0x10,
126 #define XFRM_MSG_NEWSA XFRM_MSG_NEWSA
128 #define XFRM_MSG_DELSA XFRM_MSG_DELSA
130 #define XFRM_MSG_GETSA XFRM_MSG_GETSA
133 #define XFRM_MSG_NEWPOLICY XFRM_MSG_NEWPOLICY
135 #define XFRM_MSG_DELPOLICY XFRM_MSG_DELPOLICY
137 #define XFRM_MSG_GETPOLICY XFRM_MSG_GETPOLICY
140 #define XFRM_MSG_ALLOCSPI XFRM_MSG_ALLOCSPI
142 #define XFRM_MSG_ACQUIRE XFRM_MSG_ACQUIRE
144 #define XFRM_MSG_EXPIRE XFRM_MSG_EXPIRE
147 #define XFRM_MSG_UPDPOLICY XFRM_MSG_UPDPOLICY
149 #define XFRM_MSG_UPDSA XFRM_MSG_UPDSA
152 #define XFRM_MSG_POLEXPIRE XFRM_MSG_POLEXPIRE
155 #define XFRM_MSG_FLUSHSA XFRM_MSG_FLUSHSA
156 XFRM_MSG_FLUSHPOLICY,
157 #define XFRM_MSG_FLUSHPOLICY XFRM_MSG_FLUSHPOLICY
161 #define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1)
163 #define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE)
166 * Generic LSM security context for comunicating to user space
167 * NOTE: Same format as sadb_x_sec_ctx
169 struct xfrm_user_sec_ctx {
172 __u8 ctx_alg; /* LSMs: e.g., selinux == 1 */
177 struct xfrm_user_tmpl {
180 xfrm_address_t saddr;
190 struct xfrm_encap_tmpl {
194 xfrm_address_t encap_oa;
197 /* Netlink message attributes. */
198 enum xfrm_attr_type_t {
200 XFRMA_ALG_AUTH, /* struct xfrm_algo */
201 XFRMA_ALG_CRYPT, /* struct xfrm_algo */
202 XFRMA_ALG_COMP, /* struct xfrm_algo */
203 XFRMA_ENCAP, /* struct xfrm_algo + struct xfrm_encap_tmpl */
204 XFRMA_TMPL, /* 1 or more struct xfrm_user_tmpl */
207 XFRMA_SEC_CTX, /* struct xfrm_sec_ctx */
210 #define XFRMA_MAX (__XFRMA_MAX - 1)
213 struct xfrm_usersa_info {
214 struct xfrm_selector sel;
216 xfrm_address_t saddr;
217 struct xfrm_lifetime_cfg lft;
218 struct xfrm_lifetime_cur curlft;
219 struct xfrm_stats stats;
223 __u8 mode; /* 0=transport,1=tunnel */
226 #define XFRM_STATE_NOECN 1
227 #define XFRM_STATE_DECAP_DSCP 2
228 #define XFRM_STATE_NOPMTUDISC 4
231 struct xfrm_usersa_id {
232 xfrm_address_t daddr;
238 struct xfrm_userspi_info {
239 struct xfrm_usersa_info info;
244 struct xfrm_userpolicy_info {
245 struct xfrm_selector sel;
246 struct xfrm_lifetime_cfg lft;
247 struct xfrm_lifetime_cur curlft;
252 #define XFRM_POLICY_ALLOW 0
253 #define XFRM_POLICY_BLOCK 1
255 #define XFRM_POLICY_LOCALOK 1 /* Allow user to override global policy */
259 struct xfrm_userpolicy_id {
260 struct xfrm_selector sel;
265 struct xfrm_user_acquire {
267 xfrm_address_t saddr;
268 struct xfrm_selector sel;
269 struct xfrm_userpolicy_info policy;
276 struct xfrm_user_expire {
277 struct xfrm_usersa_info state;
281 struct xfrm_user_polexpire {
282 struct xfrm_userpolicy_info pol;
286 struct xfrm_usersa_flush {
291 /* backwards compatibility for userspace */
292 #define XFRMGRP_ACQUIRE 1
293 #define XFRMGRP_EXPIRE 2
295 #define XFRMGRP_POLICY 8
300 #define XFRMNLGRP_NONE XFRMNLGRP_NONE
302 #define XFRMNLGRP_ACQUIRE XFRMNLGRP_ACQUIRE
304 #define XFRMNLGRP_EXPIRE XFRMNLGRP_EXPIRE
306 #define XFRMNLGRP_SA XFRMNLGRP_SA
308 #define XFRMNLGRP_POLICY XFRMNLGRP_POLICY
311 #define XFRMNLGRP_MAX (__XFRMNLGRP_MAX - 1)
313 #endif /* _LINUX_XFRM_H */