1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2/* PF_KEY user interface, this is defined by rfc2367 so
3 * do not make arbitrary modifications or else this header
4 * file will not be compliant.
5 */
6
7#ifndef _LINUX_PFKEY2_H
8#define _LINUX_PFKEY2_H
9
10#include <linux/types.h>
11
12#define PF_KEY_V2 2
13#define PFKEYV2_REVISION 199806L
14
15struct sadb_msg {
16 __u8 sadb_msg_version;
17 __u8 sadb_msg_type;
18 __u8 sadb_msg_errno;
19 __u8 sadb_msg_satype;
20 __u16 sadb_msg_len;
21 __u16 sadb_msg_reserved;
22 __u32 sadb_msg_seq;
23 __u32 sadb_msg_pid;
24} __attribute__((packed));
25/* sizeof(struct sadb_msg) == 16 */
26
27struct sadb_ext {
28 __u16 sadb_ext_len;
29 __u16 sadb_ext_type;
30} __attribute__((packed));
31/* sizeof(struct sadb_ext) == 4 */
32
33struct sadb_sa {
34 __u16 sadb_sa_len;
35 __u16 sadb_sa_exttype;
36 __be32 sadb_sa_spi;
37 __u8 sadb_sa_replay;
38 __u8 sadb_sa_state;
39 __u8 sadb_sa_auth;
40 __u8 sadb_sa_encrypt;
41 __u32 sadb_sa_flags;
42} __attribute__((packed));
43/* sizeof(struct sadb_sa) == 16 */
44
45struct sadb_lifetime {
46 __u16 sadb_lifetime_len;
47 __u16 sadb_lifetime_exttype;
48 __u32 sadb_lifetime_allocations;
49 __u64 sadb_lifetime_bytes;
50 __u64 sadb_lifetime_addtime;
51 __u64 sadb_lifetime_usetime;
52} __attribute__((packed));
53/* sizeof(struct sadb_lifetime) == 32 */
54
55struct sadb_address {
56 __u16 sadb_address_len;
57 __u16 sadb_address_exttype;
58 __u8 sadb_address_proto;
59 __u8 sadb_address_prefixlen;
60 __u16 sadb_address_reserved;
61} __attribute__((packed));
62/* sizeof(struct sadb_address) == 8 */
63
64struct sadb_key {
65 __u16 sadb_key_len;
66 __u16 sadb_key_exttype;
67 __u16 sadb_key_bits;
68 __u16 sadb_key_reserved;
69} __attribute__((packed));
70/* sizeof(struct sadb_key) == 8 */
71
72struct sadb_ident {
73 __u16 sadb_ident_len;
74 __u16 sadb_ident_exttype;
75 __u16 sadb_ident_type;
76 __u16 sadb_ident_reserved;
77 __u64 sadb_ident_id;
78} __attribute__((packed));
79/* sizeof(struct sadb_ident) == 16 */
80
81struct sadb_sens {
82 __u16 sadb_sens_len;
83 __u16 sadb_sens_exttype;
84 __u32 sadb_sens_dpd;
85 __u8 sadb_sens_sens_level;
86 __u8 sadb_sens_sens_len;
87 __u8 sadb_sens_integ_level;
88 __u8 sadb_sens_integ_len;
89 __u32 sadb_sens_reserved;
90} __attribute__((packed));
91/* sizeof(struct sadb_sens) == 16 */
92
93/* followed by:
94 __u64 sadb_sens_bitmap[sens_len];
95 __u64 sadb_integ_bitmap[integ_len]; */
96
97struct sadb_prop {
98 __u16 sadb_prop_len;
99 __u16 sadb_prop_exttype;
100 __u8 sadb_prop_replay;
101 __u8 sadb_prop_reserved[3];
102} __attribute__((packed));
103/* sizeof(struct sadb_prop) == 8 */
104
105/* followed by:
106 struct sadb_comb sadb_combs[(sadb_prop_len +
107 sizeof(__u64) - sizeof(struct sadb_prop)) /
108 sizeof(struct sadb_comb)]; */
109
110struct sadb_comb {
111 __u8 sadb_comb_auth;
112 __u8 sadb_comb_encrypt;
113 __u16 sadb_comb_flags;
114 __u16 sadb_comb_auth_minbits;
115 __u16 sadb_comb_auth_maxbits;
116 __u16 sadb_comb_encrypt_minbits;
117 __u16 sadb_comb_encrypt_maxbits;
118 __u32 sadb_comb_reserved;
119 __u32 sadb_comb_soft_allocations;
120 __u32 sadb_comb_hard_allocations;
121 __u64 sadb_comb_soft_bytes;
122 __u64 sadb_comb_hard_bytes;
123 __u64 sadb_comb_soft_addtime;
124 __u64 sadb_comb_hard_addtime;
125 __u64 sadb_comb_soft_usetime;
126 __u64 sadb_comb_hard_usetime;
127} __attribute__((packed));
128/* sizeof(struct sadb_comb) == 72 */
129
130struct sadb_supported {
131 __u16 sadb_supported_len;
132 __u16 sadb_supported_exttype;
133 __u32 sadb_supported_reserved;
134} __attribute__((packed));
135/* sizeof(struct sadb_supported) == 8 */
136
137/* followed by:
138 struct sadb_alg sadb_algs[(sadb_supported_len +
139 sizeof(__u64) - sizeof(struct sadb_supported)) /
140 sizeof(struct sadb_alg)]; */
141
142struct sadb_alg {
143 __u8 sadb_alg_id;
144 __u8 sadb_alg_ivlen;
145 __u16 sadb_alg_minbits;
146 __u16 sadb_alg_maxbits;
147 __u16 sadb_alg_reserved;
148} __attribute__((packed));
149/* sizeof(struct sadb_alg) == 8 */
150
151struct sadb_spirange {
152 __u16 sadb_spirange_len;
153 __u16 sadb_spirange_exttype;
154 __u32 sadb_spirange_min;
155 __u32 sadb_spirange_max;
156 __u32 sadb_spirange_reserved;
157} __attribute__((packed));
158/* sizeof(struct sadb_spirange) == 16 */
159
160struct sadb_x_kmprivate {
161 __u16 sadb_x_kmprivate_len;
162 __u16 sadb_x_kmprivate_exttype;
163 __u32 sadb_x_kmprivate_reserved;
164} __attribute__((packed));
165/* sizeof(struct sadb_x_kmprivate) == 8 */
166
167struct sadb_x_sa2 {
168 __u16 sadb_x_sa2_len;
169 __u16 sadb_x_sa2_exttype;
170 __u8 sadb_x_sa2_mode;
171 __u8 sadb_x_sa2_reserved1;
172 __u16 sadb_x_sa2_reserved2;
173 __u32 sadb_x_sa2_sequence;
174 __u32 sadb_x_sa2_reqid;
175} __attribute__((packed));
176/* sizeof(struct sadb_x_sa2) == 16 */
177
178struct sadb_x_policy {
179 __u16 sadb_x_policy_len;
180 __u16 sadb_x_policy_exttype;
181 __u16 sadb_x_policy_type;
182 __u8 sadb_x_policy_dir;
183 __u8 sadb_x_policy_reserved;
184 __u32 sadb_x_policy_id;
185 __u32 sadb_x_policy_priority;
186} __attribute__((packed));
187/* sizeof(struct sadb_x_policy) == 16 */
188
189struct sadb_x_ipsecrequest {
190 __u16 sadb_x_ipsecrequest_len;
191 __u16 sadb_x_ipsecrequest_proto;
192 __u8 sadb_x_ipsecrequest_mode;
193 __u8 sadb_x_ipsecrequest_level;
194 __u16 sadb_x_ipsecrequest_reserved1;
195 __u32 sadb_x_ipsecrequest_reqid;
196 __u32 sadb_x_ipsecrequest_reserved2;
197} __attribute__((packed));
198/* sizeof(struct sadb_x_ipsecrequest) == 16 */
199
200/* This defines the TYPE of Nat Traversal in use. Currently only one
201 * type of NAT-T is supported, draft-ietf-ipsec-udp-encaps-06
202 */
203struct sadb_x_nat_t_type {
204 __u16 sadb_x_nat_t_type_len;
205 __u16 sadb_x_nat_t_type_exttype;
206 __u8 sadb_x_nat_t_type_type;
207 __u8 sadb_x_nat_t_type_reserved[3];
208} __attribute__((packed));
209/* sizeof(struct sadb_x_nat_t_type) == 8 */
210
211/* Pass a NAT Traversal port (Source or Dest port) */
212struct sadb_x_nat_t_port {
213 __u16 sadb_x_nat_t_port_len;
214 __u16 sadb_x_nat_t_port_exttype;
215 __be16 sadb_x_nat_t_port_port;
216 __u16 sadb_x_nat_t_port_reserved;
217} __attribute__((packed));
218/* sizeof(struct sadb_x_nat_t_port) == 8 */
219
220/* Generic LSM security context */
221struct sadb_x_sec_ctx {
222 __u16 sadb_x_sec_len;
223 __u16 sadb_x_sec_exttype;
224 __u8 sadb_x_ctx_alg; /* LSMs: e.g., selinux == 1 */
225 __u8 sadb_x_ctx_doi;
226 __u16 sadb_x_ctx_len;
227} __attribute__((packed));
228/* sizeof(struct sadb_sec_ctx) = 8 */
229
230/* Used by MIGRATE to pass addresses IKE will use to perform
231 * negotiation with the peer */
232struct sadb_x_kmaddress {
233 __u16 sadb_x_kmaddress_len;
234 __u16 sadb_x_kmaddress_exttype;
235 __u32 sadb_x_kmaddress_reserved;
236} __attribute__((packed));
237/* sizeof(struct sadb_x_kmaddress) == 8 */
238
239/* To specify the SA dump filter */
240struct sadb_x_filter {
241 __u16 sadb_x_filter_len;
242 __u16 sadb_x_filter_exttype;
243 __u32 sadb_x_filter_saddr[4];
244 __u32 sadb_x_filter_daddr[4];
245 __u16 sadb_x_filter_family;
246 __u8 sadb_x_filter_splen;
247 __u8 sadb_x_filter_dplen;
248} __attribute__((packed));
249/* sizeof(struct sadb_x_filter) == 40 */
250
251/* Message types */
252#define SADB_RESERVED 0
253#define SADB_GETSPI 1
254#define SADB_UPDATE 2
255#define SADB_ADD 3
256#define SADB_DELETE 4
257#define SADB_GET 5
258#define SADB_ACQUIRE 6
259#define SADB_REGISTER 7
260#define SADB_EXPIRE 8
261#define SADB_FLUSH 9
262#define SADB_DUMP 10
263#define SADB_X_PROMISC 11
264#define SADB_X_PCHANGE 12
265#define SADB_X_SPDUPDATE 13
266#define SADB_X_SPDADD 14
267#define SADB_X_SPDDELETE 15
268#define SADB_X_SPDGET 16
269#define SADB_X_SPDACQUIRE 17
270#define SADB_X_SPDDUMP 18
271#define SADB_X_SPDFLUSH 19
272#define SADB_X_SPDSETIDX 20
273#define SADB_X_SPDEXPIRE 21
274#define SADB_X_SPDDELETE2 22
275#define SADB_X_NAT_T_NEW_MAPPING 23
276#define SADB_X_MIGRATE 24
277#define SADB_MAX 24
278
279/* Security Association flags */
280#define SADB_SAFLAGS_PFS 1
281#define SADB_SAFLAGS_NOPMTUDISC 0x20000000
282#define SADB_SAFLAGS_DECAP_DSCP 0x40000000
283#define SADB_SAFLAGS_NOECN 0x80000000
284
285/* Security Association states */
286#define SADB_SASTATE_LARVAL 0
287#define SADB_SASTATE_MATURE 1
288#define SADB_SASTATE_DYING 2
289#define SADB_SASTATE_DEAD 3
290#define SADB_SASTATE_MAX 3
291
292/* Security Association types */
293#define SADB_SATYPE_UNSPEC 0
294#define SADB_SATYPE_AH 2
295#define SADB_SATYPE_ESP 3
296#define SADB_SATYPE_RSVP 5
297#define SADB_SATYPE_OSPFV2 6
298#define SADB_SATYPE_RIPV2 7
299#define SADB_SATYPE_MIP 8
300#define SADB_X_SATYPE_IPCOMP 9
301#define SADB_SATYPE_MAX 9
302
303/* Authentication algorithms */
304#define SADB_AALG_NONE 0
305#define SADB_AALG_MD5HMAC 2
306#define SADB_AALG_SHA1HMAC 3
307#define SADB_X_AALG_SHA2_256HMAC 5
308#define SADB_X_AALG_SHA2_384HMAC 6
309#define SADB_X_AALG_SHA2_512HMAC 7
310#define SADB_X_AALG_RIPEMD160HMAC 8
311#define SADB_X_AALG_AES_XCBC_MAC 9
312#define SADB_X_AALG_NULL 251 /* kame */
313#define SADB_AALG_MAX 251
314
315/* Encryption algorithms */
316#define SADB_EALG_NONE 0
317#define SADB_EALG_DESCBC 2
318#define SADB_EALG_3DESCBC 3
319#define SADB_X_EALG_CASTCBC 6
320#define SADB_X_EALG_BLOWFISHCBC 7
321#define SADB_EALG_NULL 11
322#define SADB_X_EALG_AESCBC 12
323#define SADB_X_EALG_AESCTR 13
324#define SADB_X_EALG_AES_CCM_ICV8 14
325#define SADB_X_EALG_AES_CCM_ICV12 15
326#define SADB_X_EALG_AES_CCM_ICV16 16
327#define SADB_X_EALG_AES_GCM_ICV8 18
328#define SADB_X_EALG_AES_GCM_ICV12 19
329#define SADB_X_EALG_AES_GCM_ICV16 20
330#define SADB_X_EALG_CAMELLIACBC 22
331#define SADB_X_EALG_NULL_AES_GMAC 23
332#define SADB_EALG_MAX 253 /* last EALG */
333/* private allocations should use 249-255 (RFC2407) */
334#define SADB_X_EALG_SERPENTCBC 252 /* draft-ietf-ipsec-ciph-aes-cbc-00 */
335#define SADB_X_EALG_TWOFISHCBC 253 /* draft-ietf-ipsec-ciph-aes-cbc-00 */
336
337/* Compression algorithms */
338#define SADB_X_CALG_NONE 0
339#define SADB_X_CALG_OUI 1
340#define SADB_X_CALG_DEFLATE 2
341#define SADB_X_CALG_LZS 3
342#define SADB_X_CALG_LZJH 4
343#define SADB_X_CALG_MAX 4
344
345/* Extension Header values */
346#define SADB_EXT_RESERVED 0
347#define SADB_EXT_SA 1
348#define SADB_EXT_LIFETIME_CURRENT 2
349#define SADB_EXT_LIFETIME_HARD 3
350#define SADB_EXT_LIFETIME_SOFT 4
351#define SADB_EXT_ADDRESS_SRC 5
352#define SADB_EXT_ADDRESS_DST 6
353#define SADB_EXT_ADDRESS_PROXY 7
354#define SADB_EXT_KEY_AUTH 8
355#define SADB_EXT_KEY_ENCRYPT 9
356#define SADB_EXT_IDENTITY_SRC 10
357#define SADB_EXT_IDENTITY_DST 11
358#define SADB_EXT_SENSITIVITY 12
359#define SADB_EXT_PROPOSAL 13
360#define SADB_EXT_SUPPORTED_AUTH 14
361#define SADB_EXT_SUPPORTED_ENCRYPT 15
362#define SADB_EXT_SPIRANGE 16
363#define SADB_X_EXT_KMPRIVATE 17
364#define SADB_X_EXT_POLICY 18
365#define SADB_X_EXT_SA2 19
366/* The next four entries are for setting up NAT Traversal */
367#define SADB_X_EXT_NAT_T_TYPE 20
368#define SADB_X_EXT_NAT_T_SPORT 21
369#define SADB_X_EXT_NAT_T_DPORT 22
370#define SADB_X_EXT_NAT_T_OA 23
371#define SADB_X_EXT_SEC_CTX 24
372/* Used with MIGRATE to pass @ to IKE for negotiation */
373#define SADB_X_EXT_KMADDRESS 25
374#define SADB_X_EXT_FILTER 26
375#define SADB_EXT_MAX 26
376
377/* Identity Extension values */
378#define SADB_IDENTTYPE_RESERVED 0
379#define SADB_IDENTTYPE_PREFIX 1
380#define SADB_IDENTTYPE_FQDN 2
381#define SADB_IDENTTYPE_USERFQDN 3
382#define SADB_IDENTTYPE_MAX 3
383
384#endif /* !(_LINUX_PFKEY2_H) */
385