1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
/* $OpenBSD: ip_ah.h,v 1.36 2017/11/08 16:29:20 visa Exp $ */
/*
* The authors of this code are John Ioannidis (ji@tla.org),
* Angelos D. Keromytis (kermit@csd.uch.gr) and
* Niels Provos (provos@physnet.uni-hamburg.de).
*
* The original version of this code was written by John Ioannidis
* for BSD/OS in Athens, Greece, in November 1995.
*
* Ported to OpenBSD and NetBSD, with additional transforms, in December 1996,
* by Angelos D. Keromytis.
*
* Additional transforms and features in 1997 and 1998 by Angelos D. Keromytis
* and Niels Provos.
*
* Additional features in 1999 by Angelos D. Keromytis.
*
* Copyright (C) 1995, 1996, 1997, 1998, 1999 John Ioannidis,
* Angelos D. Keromytis and Niels Provos.
* Copyright (c) 2001 Angelos D. Keromytis.
*
* Permission to use, copy, and modify this software with or without fee
* is hereby granted, provided that this entire notice is included in
* all copies of any software which is or includes a copy or
* modification of this software.
* You may use this code under the GNU public license if you so wish. Please
* contribute changes back to the authors under this freer than GPL license
* so that we may further the use of strong encryption without limitations to
* all.
*
* THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY
* REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE
* MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
* PURPOSE.
*/
#ifndef _NETINET_IP_AH_H_
#define _NETINET_IP_AH_H_
struct ahstat {
uint64_t ahs_hdrops; /* Packet shorter than header shows */
uint64_t ahs_nopf; /* Protocol family not supported */
uint64_t ahs_notdb;
uint64_t ahs_badkcr;
uint64_t ahs_badauth;
uint64_t ahs_noxform;
uint64_t ahs_qfull;
uint64_t ahs_wrap;
uint64_t ahs_replay;
uint64_t ahs_badauthl; /* Bad authenticator length */
uint64_t ahs_input; /* Input AH packets */
uint64_t ahs_output; /* Output AH packets */
uint64_t ahs_invalid; /* Trying to use an invalid TDB */
uint64_t ahs_ibytes; /* Input bytes */
uint64_t ahs_obytes; /* Output bytes */
uint64_t ahs_toobig; /* Packet got larger than
* IP_MAXPACKET */
uint64_t ahs_pdrops; /* Packet blocked due to policy */
uint64_t ahs_crypto; /* Crypto processing failure */
uint64_t ahs_outfail; /* Packet output failure */
};
struct ah {
u_int8_t ah_nh;
u_int8_t ah_hl;
u_int16_t ah_rv;
u_int32_t ah_spi;
u_int32_t ah_rpl; /* We may not use this, if we're using old xforms */
};
/* Length of base AH header */
#define AH_FLENGTH 8
/*
* Names for AH sysctl objects
*/
#define AHCTL_ENABLE 1 /* Enable AH processing */
#define AHCTL_STATS 2 /* AH stats */
#define AHCTL_MAXID 3
#define AHCTL_NAMES { \
{ 0, 0 }, \
{ "enable", CTLTYPE_INT }, \
{ "stats", CTLTYPE_STRUCT } \
}
#define AHCTL_VARS { \
NULL, \
&ah_enable, \
NULL \
}
#ifdef _KERNEL
#include <sys/percpu.h>
enum ahstat_counters {
ahs_hdrops, /* Packet shorter than header shows */
ahs_nopf, /* Protocol family not supported */
ahs_notdb,
ahs_badkcr,
ahs_badauth,
ahs_noxform,
ahs_qfull,
ahs_wrap,
ahs_replay,
ahs_badauthl, /* Bad authenticator length */
ahs_input, /* Input AH packets */
ahs_output, /* Output AH packets */
ahs_invalid, /* Trying to use an invalid TDB */
ahs_ibytes, /* Input bytes */
ahs_obytes, /* Output bytes */
ahs_toobig, /* Packet got larger than
* IP_MAXPACKET */
ahs_pdrops, /* Packet blocked due to policy */
ahs_crypto, /* Crypto processing failure */
ahs_outfail, /* Packet output failure */
ahs_ncounters
};
extern struct cpumem *ahcounters;
static inline void
ahstat_inc(enum ahstat_counters c)
{
counters_inc(ahcounters, c);
}
static inline void
ahstat_add(enum ahstat_counters c, uint64_t v)
{
counters_add(ahcounters, c, v);
}
extern int ah_enable;
#endif /* _KERNEL */
#endif /* _NETINET_IP_AH_H_ */
|
