FreeBSD/Linux Kernel Cross Reference
sys/netipsec/esp.h
1 /* $FreeBSD: src/sys/netipsec/esp.h,v 1.2 2005/01/07 01:45:46 imp Exp $ */
2 /* $KAME: esp.h,v 1.16 2000/10/18 21:28:00 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 * RFC1827/2406 Encapsulated Security Payload.
35 */
36
37 #ifndef _NETIPSEC_ESP_H_
38 #define _NETIPSEC_ESP_H_
39
40 struct esp {
41 u_int32_t esp_spi; /* ESP */
42 /*variable size, 32bit bound*/ /* Initialization Vector */
43 /*variable size*/ /* Payload data */
44 /*variable size*/ /* padding */
45 /*8bit*/ /* pad size */
46 /*8bit*/ /* next header */
47 /*8bit*/ /* next header */
48 /*variable size, 32bit bound*/ /* Authentication data (new IPsec) */
49 };
50
51 struct newesp {
52 u_int32_t esp_spi; /* ESP */
53 u_int32_t esp_seq; /* Sequence number */
54 /*variable size*/ /* (IV and) Payload data */
55 /*variable size*/ /* padding */
56 /*8bit*/ /* pad size */
57 /*8bit*/ /* next header */
58 /*8bit*/ /* next header */
59 /*variable size, 32bit bound*/ /* Authentication data */
60 };
61
62 struct esptail {
63 u_int8_t esp_padlen; /* pad length */
64 u_int8_t esp_nxt; /* Next header */
65 /*variable size, 32bit bound*/ /* Authentication data (new IPsec)*/
66 };
67
68 #define ESP_ALEN 12 /* 96-bit authenticator */
69 #endif /*_NETIPSEC_ESP_H_*/
70
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