Watt-32 tcp/ip  2.2 dev-rel.10
ah.h
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1 
5 /* $FreeBSD: src/sys/netinet6/ah.h,v 1.7 2002/04/19 04:46:22 suz Exp $ */
6 /* $KAME: ah.h,v 1.16 2001/09/04 08:43:19 itojun Exp $ */
7 
8 /*
9  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
10  * All rights reserved.
11  *
12  * Redistribution and use in source and binary forms, with or without
13  * modification, are permitted provided that the following conditions
14  * are met:
15  * 1. Redistributions of source code must retain the above copyright
16  * notice, this list of conditions and the following disclaimer.
17  * 2. Redistributions in binary form must reproduce the above copyright
18  * notice, this list of conditions and the following disclaimer in the
19  * documentation and/or other materials provided with the distribution.
20  * 3. Neither the name of the project nor the names of its contributors
21  * may be used to endorse or promote products derived from this software
22  * without specific prior written permission.
23  *
24  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27  * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34  * SUCH DAMAGE.
35  */
36 
37 /*
38  * RFC1826/2402 authentication header.
39  */
40 
41 #ifndef _NETINET6_AH_H_
42 #define _NETINET6_AH_H_
43 
44 #if defined(_KERNEL) && !defined(_LKM)
45 #include "opt_inet.h"
46 #endif
47 
48 struct ah {
49  u_int8_t ah_nxt; /* Next Header */
50  u_int8_t ah_len; /* Length of data, in 32bit */
51  u_int16_t ah_reserve; /* Reserved for future use */
52  u_int32_t ah_spi; /* Security parameter index */
53  /* variable size, 32bit bound*/ /* Authentication data */
54 };
55 
56 struct newah {
57  u_int8_t ah_nxt; /* Next Header */
58  u_int8_t ah_len; /* Length of data + 1, in 32bit */
59  u_int16_t ah_reserve; /* Reserved for future use */
60  u_int32_t ah_spi; /* Security parameter index */
61  u_int32_t ah_seq; /* Sequence number field */
62  /* variable size, 32bit bound*/ /* Authentication data */
63 };
64 
65 #ifdef _KERNEL
66 struct secasvar;
67 
69  struct secasvar *sav;
70  void* foo; /* per algorithm data - maybe */
71 };
72 
73 struct ah_algorithm {
74  int (*sumsiz) __P((struct secasvar *));
75  int (*mature) __P((struct secasvar *));
76  int keymin; /* in bits */
77  int keymax; /* in bits */
78  const char *name;
79  int (*init) __P((struct ah_algorithm_state *, struct secasvar *));
80  void (*update) __P((struct ah_algorithm_state *, caddr_t, size_t));
81  void (*result) __P((struct ah_algorithm_state *, caddr_t));
82 };
83 
84 #define AH_MAXSUMSIZE 16
85 
86 extern const struct ah_algorithm *ah_algorithm_lookup __P((int));
87 
88 /* cksum routines */
89 extern int ah_hdrlen __P((struct secasvar *));
90 
91 extern size_t ah_hdrsiz __P((struct ipsecrequest *));
92 extern void ah4_input __P((struct mbuf *, int));
93 extern int ah4_output __P((struct mbuf *, struct ipsecrequest *));
94 extern int ah4_calccksum __P((struct mbuf *, caddr_t, size_t,
95  const struct ah_algorithm *, struct secasvar *));
96 #endif /* _KERNEL */
97 
98 #endif /* _NETINET6_AH_H_ */
Definition: mbuf.h:6
Definition: ah.h:56
Definition: ah.h:48