xref: /netbsd/sys/net/pfkeyv2.h (revision 96c9513d)
1 /*	$NetBSD: pfkeyv2.h,v 1.35 2023/01/04 01:58:33 knakahara Exp $	*/
2 /*	$KAME: pfkeyv2.h,v 1.36 2003/07/25 09:33:37 itojun Exp $	*/
3 
4 /*
5  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  * 3. Neither the name of the project nor the names of its contributors
17  *    may be used to endorse or promote products derived from this software
18  *    without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30  * SUCH DAMAGE.
31  */
32 
33 /*
34  * This file has been derived rfc 2367,
35  * And added some flags of SADB_KEY_FLAGS_ as SADB_X_EXT_.
36  *	sakane@ydc.co.jp
37  */
38 
39 #ifndef _NET_PFKEYV2_H_
40 #define _NET_PFKEYV2_H_
41 
42 /*
43 This file defines structures and symbols for the PF_KEY Version 2
44 key management interface. It was written at the U.S. Naval Research
45 Laboratory. This file is in the public domain. The authors ask that
46 you leave this credit intact on any copies of this file.
47 */
48 #ifndef __PFKEY_V2_H
49 #define __PFKEY_V2_H 1
50 
51 #define PF_KEY_V2 2
52 #define PFKEYV2_REVISION        199806L
53 
54 #define SADB_RESERVED    0
55 #define SADB_GETSPI      1
56 #define SADB_UPDATE      2
57 #define SADB_ADD         3
58 #define SADB_DELETE      4
59 #define SADB_GET         5
60 #define SADB_ACQUIRE     6
61 #define SADB_REGISTER    7
62 #define SADB_EXPIRE      8
63 #define SADB_FLUSH       9
64 #define SADB_DUMP        10
65 #define SADB_X_PROMISC   11
66 #define SADB_X_PCHANGE   12
67 
68 #define SADB_X_SPDUPDATE  13
69 #define SADB_X_SPDADD     14
70 #define SADB_X_SPDDELETE  15	/* by policy index */
71 #define SADB_X_SPDGET     16
72 #define SADB_X_SPDACQUIRE 17
73 #define SADB_X_SPDDUMP    18
74 #define SADB_X_SPDFLUSH   19
75 #define SADB_X_SPDSETIDX  20
76 #define SADB_X_SPDEXPIRE  21	/* not yet */
77 #define SADB_X_SPDDELETE2 22	/* by policy id */
78 #define SADB_X_NAT_T_NEW_MAPPING 23
79 #if 0
80 #define	SADB_X_MIGRATE    24	/* KAME */
81 #endif
82 #define SADB_MAX          23
83 
84 struct sadb_msg {
85   uint8_t sadb_msg_version;
86   uint8_t sadb_msg_type;
87   uint8_t sadb_msg_errno;
88   uint8_t sadb_msg_satype;
89   uint16_t sadb_msg_len;
90   uint16_t sadb_msg_reserved;
91   uint32_t sadb_msg_seq;
92   uint32_t sadb_msg_pid;
93 };
94 
95 struct sadb_ext {
96   uint16_t sadb_ext_len;
97   uint16_t sadb_ext_type;
98 };
99 
100 struct sadb_sa {
101   uint16_t sadb_sa_len;
102   uint16_t sadb_sa_exttype;
103   uint32_t sadb_sa_spi;
104   uint8_t sadb_sa_replay;
105   uint8_t sadb_sa_state;
106   uint8_t sadb_sa_auth;
107   uint8_t sadb_sa_encrypt;
108   uint32_t sadb_sa_flags;
109 };
110 
111 struct sadb_lifetime {
112   uint16_t sadb_lifetime_len;
113   uint16_t sadb_lifetime_exttype;
114   uint32_t sadb_lifetime_allocations;
115   uint64_t sadb_lifetime_bytes;
116   uint64_t sadb_lifetime_addtime;
117   uint64_t sadb_lifetime_usetime;
118 };
119 
120 struct sadb_address {
121   uint16_t sadb_address_len;
122   uint16_t sadb_address_exttype;
123   uint8_t sadb_address_proto;
124   uint8_t sadb_address_prefixlen;
125   uint16_t sadb_address_reserved;
126 };
127 
128 struct sadb_key {
129   uint16_t sadb_key_len;
130   uint16_t sadb_key_exttype;
131   uint16_t sadb_key_bits;
132   uint16_t sadb_key_reserved;
133 };
134 
135 struct sadb_ident {
136   uint16_t sadb_ident_len;
137   uint16_t sadb_ident_exttype;
138   uint16_t sadb_ident_type;
139   uint16_t sadb_ident_reserved;
140   uint64_t sadb_ident_id;
141 };
142 
143 struct sadb_sens {
144   uint16_t sadb_sens_len;
145   uint16_t sadb_sens_exttype;
146   uint32_t sadb_sens_dpd;
147   uint8_t sadb_sens_sens_level;
148   uint8_t sadb_sens_sens_len;
149   uint8_t sadb_sens_integ_level;
150   uint8_t sadb_sens_integ_len;
151   uint32_t sadb_sens_reserved;
152 };
153 
154 struct sadb_prop {
155   uint16_t sadb_prop_len;
156   uint16_t sadb_prop_exttype;
157   uint8_t sadb_prop_replay;
158   uint8_t sadb_prop_reserved[3];
159 };
160 
161 struct sadb_comb {
162   uint8_t sadb_comb_auth;
163   uint8_t sadb_comb_encrypt;
164   uint16_t sadb_comb_flags;
165   uint16_t sadb_comb_auth_minbits;
166   uint16_t sadb_comb_auth_maxbits;
167   uint16_t sadb_comb_encrypt_minbits;
168   uint16_t sadb_comb_encrypt_maxbits;
169   uint32_t sadb_comb_reserved;
170   uint32_t sadb_comb_soft_allocations;
171   uint32_t sadb_comb_hard_allocations;
172   uint64_t sadb_comb_soft_bytes;
173   uint64_t sadb_comb_hard_bytes;
174   uint64_t sadb_comb_soft_addtime;
175   uint64_t sadb_comb_hard_addtime;
176   uint64_t sadb_comb_soft_usetime;
177   uint64_t sadb_comb_hard_usetime;
178 };
179 
180 struct sadb_supported {
181   uint16_t sadb_supported_len;
182   uint16_t sadb_supported_exttype;
183   uint32_t sadb_supported_reserved;
184 };
185 
186 struct sadb_alg {
187   uint8_t sadb_alg_id;
188   uint8_t sadb_alg_ivlen;
189   uint16_t sadb_alg_minbits;
190   uint16_t sadb_alg_maxbits;
191   uint16_t sadb_alg_reserved;
192 };
193 
194 struct sadb_spirange {
195   uint16_t sadb_spirange_len;
196   uint16_t sadb_spirange_exttype;
197   uint32_t sadb_spirange_min;
198   uint32_t sadb_spirange_max;
199   uint32_t sadb_spirange_reserved;
200 };
201 
202 struct sadb_x_kmprivate {
203   uint16_t sadb_x_kmprivate_len;
204   uint16_t sadb_x_kmprivate_exttype;
205   uint32_t sadb_x_kmprivate_reserved;
206 };
207 
208 /*
209  * XXX Additional SA Extension.
210  * mode: tunnel or transport
211  * reqid: to make SA unique nevertheless the address pair of SA are same.
212  *        Mainly it's for VPN.
213  */
214 struct sadb_x_sa2 {
215   uint16_t sadb_x_sa2_len;
216   uint16_t sadb_x_sa2_exttype;
217   uint8_t sadb_x_sa2_mode;
218   uint8_t sadb_x_sa2_reserved1;
219   uint16_t sadb_x_sa2_reserved2;
220   uint32_t sadb_x_sa2_sequence;
221   uint32_t sadb_x_sa2_reqid;		/* topmost 16bits are always 0 */
222 };
223 
224 /* XXX Policy Extension */
225 /* sizeof(struct sadb_x_policy) == 16 */
226 struct sadb_x_policy {
227   uint16_t sadb_x_policy_len;
228   uint16_t sadb_x_policy_exttype;
229   uint16_t sadb_x_policy_type;		/* See policy type of ipsec.h */
230   uint8_t sadb_x_policy_dir;		/* direction, see ipsec.h */
231   uint8_t sadb_x_policy_flags;
232 #define IPSEC_POLICY_FLAG_ORIGIN_KERNEL 0x80	/* policy is generated by kernel */
233 #define	sadb_x_policy_reserved	sadb_x_policy_flags
234   uint32_t sadb_x_policy_id;
235   uint32_t sadb_x_policy_reserved2;
236 };
237 /*
238  * When policy_type == IPSEC, it is followed by some of
239  * the ipsec policy request.
240  * [total length of ipsec policy requests]
241  *	= (sadb_x_policy_len * sizeof(uint64_t) - sizeof(struct sadb_x_policy))
242  */
243 
244 /* XXX IPsec Policy Request Extension */
245 /*
246  * This structure is aligned 8 bytes.
247  */
248 struct sadb_x_ipsecrequest {
249   uint16_t sadb_x_ipsecrequest_len;	/* structure length in 64 bits. */
250   uint16_t sadb_x_ipsecrequest_proto;	/* See ipsec.h */
251   uint8_t sadb_x_ipsecrequest_mode;	/* See IPSEC_MODE_XX in ipsec.h. */
252   uint8_t sadb_x_ipsecrequest_level;	/* See IPSEC_LEVEL_XX in ipsec.h */
253   uint16_t sadb_x_ipsecrequest_reqid;	/* See ipsec.h */
254 
255   /*
256    * followed by source IP address of SA, and immediately followed by
257    * destination IP address of SA.  These encoded into two of sockaddr
258    * structure without any padding.  Must set each sa_len exactly.
259    * Each of length of the sockaddr structure are not aligned to 64bits,
260    * but sum of x_request and addresses is aligned to 64bits.
261    */
262 };
263 
264 /* NAT traversal type, see draft-ietf-ipsec-udp-encaps-06 */
265 /* sizeof(struct sadb_x_nat_t_type) == 8 */
266 struct sadb_x_nat_t_type {
267   uint16_t sadb_x_nat_t_type_len;
268   uint16_t sadb_x_nat_t_type_exttype;
269   uint8_t sadb_x_nat_t_type_type;
270   uint8_t sadb_x_nat_t_type_reserved[3];
271 };
272 
273 /* NAT traversal source or destination port */
274 /* sizeof(struct sadb_x_nat_t_port) == 8 */
275 struct sadb_x_nat_t_port {
276   uint16_t sadb_x_nat_t_port_len;
277   uint16_t sadb_x_nat_t_port_exttype;
278   uint16_t sadb_x_nat_t_port_port;
279   uint16_t sadb_x_nat_t_port_reserved;
280 };
281 
282 /* ESP fragmentation size */
283 /* sizeof(struct sadb_x_nat_t_frag) == 8 */
284 struct sadb_x_nat_t_frag {
285   uint16_t sadb_x_nat_t_frag_len;
286   uint16_t sadb_x_nat_t_frag_exttype;
287   uint16_t sadb_x_nat_t_frag_fraglen;
288   uint16_t sadb_x_nat_t_frag_reserved;
289 };
290 
291 
292 #define SADB_EXT_RESERVED             0
293 #define SADB_EXT_SA                   1
294 #define SADB_EXT_LIFETIME_CURRENT     2
295 #define SADB_EXT_LIFETIME_HARD        3
296 #define SADB_EXT_LIFETIME_SOFT        4
297 #define SADB_EXT_ADDRESS_SRC          5
298 #define SADB_EXT_ADDRESS_DST          6
299 #define SADB_EXT_ADDRESS_PROXY        7
300 #define SADB_EXT_KEY_AUTH             8
301 #define SADB_EXT_KEY_ENCRYPT          9
302 #define SADB_EXT_IDENTITY_SRC         10
303 #define SADB_EXT_IDENTITY_DST         11
304 #define SADB_EXT_SENSITIVITY          12
305 #define SADB_EXT_PROPOSAL             13
306 #define SADB_EXT_SUPPORTED_AUTH       14
307 #define SADB_EXT_SUPPORTED_ENCRYPT    15
308 #define SADB_EXT_SPIRANGE             16
309 #define SADB_X_EXT_KMPRIVATE          17
310 #define SADB_X_EXT_POLICY             18
311 #define SADB_X_EXT_SA2                19
312 #define SADB_X_EXT_NAT_T_TYPE         20
313 #define SADB_X_EXT_NAT_T_SPORT        21
314 #define SADB_X_EXT_NAT_T_DPORT        22
315 #define SADB_X_EXT_NAT_T_OA           23	/* compat */
316 #define SADB_X_EXT_NAT_T_OAI          23
317 #define SADB_X_EXT_NAT_T_OAR          24
318 #define SADB_X_EXT_NAT_T_FRAG	      25
319 #if 0
320 #define	SADB_X_EXT_TAG		      25	/* KAME */
321 #define	SADB_X_EXT_SA3		      26	/* KAME */
322 #define	SADB_X_EXT_PACKET	      27	/* KAME */
323 #endif
324 #define SADB_EXT_MAX                  25
325 
326 #define SADB_SATYPE_UNSPEC	0
327 #define SADB_SATYPE_AH		2
328 #define SADB_SATYPE_ESP		3
329 #define SADB_SATYPE_RSVP	5
330 #define SADB_SATYPE_OSPFV2	6
331 #define SADB_SATYPE_RIPV2	7
332 #define SADB_SATYPE_MIP		8
333 #define SADB_X_SATYPE_IPCOMP	9
334 /*#define SADB_X_SATYPE_POLICY	10	obsolete, do not reuse */
335 #define SADB_X_SATYPE_TCPSIGNATURE	11
336 #define SADB_SATYPE_MAX		12
337 
338 #define SADB_SASTATE_LARVAL   0
339 #define SADB_SASTATE_MATURE   1
340 #define SADB_SASTATE_DYING    2
341 #define SADB_SASTATE_DEAD     3
342 #define SADB_SASTATE_MAX      3
343 
344 #define SADB_SASTATE_USABLE_P(sav) \
345     ((sav)->state == SADB_SASTATE_MATURE || (sav)->state == SADB_SASTATE_DYING)
346 
347 #define SADB_SAFLAGS_PFS      1
348 
349 /*
350  * Statistics variable definitions. For ESP/AH/IPCOMP we define
351  * indirection arrays of 256 elements indexed by algorithm (which
352  * is uint8_t. All unknown/unhandled entries are summed in the 0th
353  * element. We provide three variables per protocol:
354  * 	1. *_STATS_INIT: a list of initializers
355  * 	2. *_STATS_NUM: number of algorithms/statistics including (0/unknown)
356  *	3. *_STATS_STR: a list of strings to symbolically print the statistics
357  */
358 
359 /* RFC2367 numbers - meets RFC2407 */
360 #define SADB_AALG_NONE		0
361 #define SADB_AALG_MD5HMAC	2
362 #define SADB_AALG_SHA1HMAC	3
363 #define SADB_AALG_MAX		251
364 /* private allocations - based on RFC2407/IANA assignment */
365 #define SADB_X_AALG_SHA2_256	5
366 #define SADB_X_AALG_SHA2_384	6
367 #define SADB_X_AALG_SHA2_512	7
368 #define SADB_X_AALG_RIPEMD160HMAC 8
369 #define SADB_X_AALG_AES_XCBC_MAC 9 /* RFC3566 */
370 #define SADB_X_AALG_AES128GMAC	11 /* RFC4543 + Errata1821 */
371 #define SADB_X_AALG_AES192GMAC	12
372 #define SADB_X_AALG_AES256GMAC	13
373 /* private allocations should use 249-255 (RFC2407) */
374 #define SADB_X_AALG_MD5		249	/* Keyed MD5 */
375 #define SADB_X_AALG_SHA		250	/* Keyed SHA */
376 #define SADB_X_AALG_NULL	251	/* null authentication */
377 #define SADB_X_AALG_TCP_MD5	252	/* Keyed TCP-MD5 (RFC2385) */
378 
379 
380 #define SADB_AALG_STATS_INIT \
381     [SADB_AALG_NONE] = 1, \
382     [SADB_AALG_MD5HMAC] = 2, \
383     [SADB_AALG_SHA1HMAC] = 3, \
384     [SADB_X_AALG_SHA2_256] = 4, \
385     [SADB_X_AALG_SHA2_384] = 5, \
386     [SADB_X_AALG_SHA2_512] = 6, \
387     [SADB_X_AALG_RIPEMD160HMAC] = 7, \
388     [SADB_X_AALG_AES_XCBC_MAC] = 8, \
389     [SADB_X_AALG_AES128GMAC] = 9, \
390     [SADB_X_AALG_AES192GMAC] = 10, \
391     [SADB_X_AALG_AES256GMAC] = 11, \
392     [SADB_X_AALG_MD5] = 12, \
393     [SADB_X_AALG_SHA] = 13, \
394     [SADB_X_AALG_NULL] = 14, \
395     [SADB_X_AALG_TCP_MD5] = 15,
396 
397 #define SADB_AALG_STATS_NUM 16
398 #define SADB_AALG_STATS_STR \
399     "*unknown*", \
400     "none", \
401     "hmac-md5", \
402     "hmac-sha1", \
403     "hmac-sha2-256", \
404     "hmac-sha2-384", \
405     "hmac-sha2-512", \
406     "hmac-ripe-md160", \
407     "aes-xbc-mac", \
408     "aes-128-mac", \
409     "aes-192-mac", \
410     "aes-256-mac", \
411     "md5", \
412     "sha", \
413     "null", \
414     "tcp-md5",
415 
416 /* RFC2367 numbers - meets RFC2407 */
417 #define SADB_EALG_NONE		0
418 #define SADB_EALG_DESCBC	2
419 #define SADB_EALG_3DESCBC	3
420 #define SADB_EALG_NULL		11
421 #define SADB_EALG_MAX		250
422 /* private allocations - based on RFC2407/IANA assignment */
423 #define SADB_X_EALG_CAST128CBC	6
424 #define SADB_X_EALG_BLOWFISHCBC	7
425 #define SADB_X_EALG_RIJNDAELCBC	12
426 #define SADB_X_EALG_AES		12
427 #define SADB_X_EALG_AESCTR	13 /* RFC3686 */
428 #define SADB_X_EALG_AESGCM8	18 /* RFC4106 */
429 #define SADB_X_EALG_AESGCM12	19
430 #define SADB_X_EALG_AESGCM16	20
431 #define SADB_X_EALG_CAMELLIACBC	22 /* RFC4312 */
432 #define SADB_X_EALG_AESGMAC	23 /* RFC4543 + Errata1821 */
433 /* private allocations should use 249-255 (RFC2407) */
434 #define SADB_X_EALG_SKIPJACK    250
435 
436 #define SADB_EALG_STATS_INIT \
437     [SADB_EALG_NONE] = 1, \
438     [SADB_EALG_DESCBC] = 2, \
439     [SADB_EALG_3DESCBC] = 3, \
440     [SADB_EALG_NULL] = 4, \
441     [SADB_X_EALG_CAST128CBC] = 5, \
442     [SADB_X_EALG_BLOWFISHCBC] = 6, \
443     [SADB_X_EALG_RIJNDAELCBC] = 7, \
444     [SADB_X_EALG_AESCTR] = 8, \
445     [SADB_X_EALG_AESGCM8] = 9, \
446     [SADB_X_EALG_AESGCM12] = 10, \
447     [SADB_X_EALG_AESGCM16] = 11, \
448     [SADB_X_EALG_CAMELLIACBC] = 12, \
449     [SADB_X_EALG_AESGMAC] = 13, \
450     [SADB_X_EALG_SKIPJACK] = 14,
451 
452 #define SADB_EALG_STATS_NUM 15
453 #define SADB_EALG_STATS_STR \
454     "*unknown*", \
455     "none", \
456     "des-cbc", \
457     "3des-cbc", \
458     "null", \
459     "cast128-cbc", \
460     "blowfish-cbc", \
461     "aes-cbc", \
462     "aes-ctr", \
463     "aes-gcm-8", \
464     "aes-gcm-12", \
465     "aes-gcm-16", \
466     "camelia-cbc", \
467     "aes-gmac", \
468     "skipjack",
469 
470 /* private allocations - based on RFC2407/IANA assignment */
471 #define SADB_X_CALG_NONE	0
472 #define SADB_X_CALG_OUI		1
473 #define SADB_X_CALG_DEFLATE	2
474 #define SADB_X_CALG_LZS		3
475 #define SADB_X_CALG_MAX		4
476 
477 #define SADB_CALG_STATS_INIT \
478     [SADB_X_CALG_NONE] = 1, \
479     [SADB_X_CALG_OUI] = 2, \
480     [SADB_X_CALG_DEFLATE] = 3, \
481     [SADB_X_CALG_LZS] = 4,
482 
483 #define SADB_CALG_STATS_NUM 5
484 
485 #define SADB_CALG_STATS_STR \
486     "*unknown*", \
487     "none", \
488     "oui", \
489     "deflate", \
490     "lzs",
491 
492 
493 #define SADB_IDENTTYPE_RESERVED   0
494 #define SADB_IDENTTYPE_PREFIX     1
495 #define SADB_IDENTTYPE_FQDN       2
496 #define SADB_IDENTTYPE_USERFQDN   3
497 #define SADB_X_IDENTTYPE_ADDR     4
498 #define SADB_IDENTTYPE_MAX        4
499 
500 /* `flags' in sadb_sa structure holds followings */
501 #define SADB_X_EXT_NONE		0x0000	/* i.e. new format. */
502 #define SADB_X_EXT_OLD		0x0001	/* old format. */
503 
504 #define SADB_X_EXT_IV4B		0x0010	/* IV length of 4 bytes in use */
505 #define SADB_X_EXT_DERIV	0x0020	/* DES derived */
506 #define SADB_X_EXT_CYCSEQ	0x0040	/* allowing to cyclic sequence. */
507 
508 	/* three of followings are exclusive flags each them */
509 #define SADB_X_EXT_PSEQ		0x0000	/* sequential padding for ESP */
510 #define SADB_X_EXT_PRAND	0x0100	/* random padding for ESP */
511 #define SADB_X_EXT_PZERO	0x0200	/* zero padding for ESP */
512 #define SADB_X_EXT_PMASK	0x0300	/* mask for padding flag */
513 
514 #if 1
515 #define SADB_X_EXT_RAWCPI	0x0080	/* use well known CPI (IPComp) */
516 #endif
517 
518 #define SADB_KEY_FLAGS_MAX	0x0fff
519 
520 /* SPI size for PF_KEYv2 */
521 #define PFKEY_SPI_SIZE	sizeof(uint32_t)
522 
523 /* Identifier for menber of lifetime structure */
524 #define SADB_X_LIFETIME_ALLOCATIONS	0
525 #define SADB_X_LIFETIME_BYTES		1
526 #define SADB_X_LIFETIME_ADDTIME		2
527 #define SADB_X_LIFETIME_USETIME		3
528 
529 /* The rate for SOFT lifetime against HARD one. */
530 #define PFKEY_SOFT_LIFETIME_RATE	80
531 
532 /* Utilities */
533 #define PFKEY_ALIGN8(a) (1 + (((a) - 1) | (8 - 1)))
534 #define	PFKEY_EXTLEN(msg) \
535 	PFKEY_UNUNIT64(((const struct sadb_ext *)(const void *)(msg))->sadb_ext_len)
536 #define PFKEY_ADDR_PREFIX(ext) \
537 	(((const struct sadb_address *)(const void *)(ext))->sadb_address_prefixlen)
538 #define PFKEY_ADDR_PROTO(ext) \
539 	(((const struct sadb_address *)(const void *)(ext))->sadb_address_proto)
540 #define PFKEY_ADDR_SADDR(ext) \
541 	((struct sockaddr *)(void *)((char *)(void *)(ext) + \
542 	sizeof(struct sadb_address)))
543 
544 /* in 64bits */
545 #define	PFKEY_UNUNIT64(a)	((a) << 3)
546 #define	PFKEY_UNIT64(a)		((a) >> 3)
547 
548 #endif /* __PFKEY_V2_H */
549 
550 #endif /* !_NET_PFKEYV2_H_ */
551