1 /* $OpenBSD: ip_esp.h,v 1.40 2004/02/17 12:07:45 markus Exp $ */
2 /*
3 * The authors of this code are John Ioannidis (ji@tla.org),
4 * Angelos D. Keromytis (kermit@csd.uch.gr) and
5 * Niels Provos (provos@physnet.uni-hamburg.de).
6 *
7 * The original version of this code was written by John Ioannidis
8 * for BSD/OS in Athens, Greece, in November 1995.
9 *
10 * Ported to OpenBSD and NetBSD, with additional transforms, in December 1996,
11 * by Angelos D. Keromytis.
12 *
13 * Additional transforms and features in 1997 and 1998 by Angelos D. Keromytis
14 * and Niels Provos.
15 *
16 * Additional features in 1999 by Angelos D. Keromytis.
17 *
18 * Copyright (C) 1995, 1996, 1997, 1998, 1999 by John Ioannidis,
19 * Angelos D. Keromytis and Niels Provos.
20 * Copyright (c) 2001 Angelos D. Keromytis.
21 *
22 * Permission to use, copy, and modify this software with or without fee
23 * is hereby granted, provided that this entire notice is included in
24 * all copies of any software which is or includes a copy or
25 * modification of this software.
26 * You may use this code under the GNU public license if you so wish. Please
27 * contribute changes back to the authors under this freer than GPL license
28 * so that we may further the use of strong encryption without limitations to
29 * all.
30 *
31 * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR
32 * IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY
33 * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE
34 * MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
35 * PURPOSE.
36 */
37
38 #ifndef _NETINET_IP_ESP_H_
39 #define _NETINET_IP_ESP_H_
40
41 #define ESP_ALEN 12 /* 96-bit authenticator */
42
43 struct espstat
44 {
45 u_int32_t esps_hdrops; /* Packet shorter than header shows */
46 u_int32_t esps_nopf; /* Protocol family not supported */
47 u_int32_t esps_notdb;
48 u_int32_t esps_badkcr;
49 u_int32_t esps_qfull;
50 u_int32_t esps_noxform;
51 u_int32_t esps_badilen;
52 u_int32_t esps_wrap; /* Replay counter wrapped around */
53 u_int32_t esps_badenc; /* Bad encryption detected */
54 u_int32_t esps_badauth; /* Only valid for transforms with auth */
55 u_int32_t esps_replay; /* Possible packet replay detected */
56 u_int32_t esps_input; /* Input ESP packets */
57 u_int32_t esps_output; /* Output ESP packets */
58 u_int32_t esps_invalid; /* Trying to use an invalid TDB */
59 u_int64_t esps_ibytes; /* Input bytes */
60 u_int64_t esps_obytes; /* Output bytes */
61 u_int32_t esps_toobig; /* Packet got larger than IP_MAXPACKET */
62 u_int32_t esps_pdrops; /* Packet blocked due to policy */
63 u_int32_t esps_crypto; /* Crypto processing failure */
64 u_int32_t esps_udpencin; /* Input ESP-in-UDP packets */
65 u_int32_t esps_udpencout; /* Output ESP-in-UDP packets */
66 u_int32_t esps_udpinval; /* Invalid input ESP-in-UDP packets */
67 };
68
69 /*
70 * Names for ESP sysctl objects
71 */
72 #define ESPCTL_ENABLE 1 /* Enable ESP processing */
73 #define ESPCTL_UDPENCAP_ENABLE 2 /* Enable ESP over UDP */
74 #define ESPCTL_UDPENCAP_PORT 3 /* UDP port for encapsulation */
75 #define ESPCTL_MAXID 4
76
77 #define ESPCTL_NAMES { \
78 { 0, 0 }, \
79 { "enable", CTLTYPE_INT }, \
80 { "udpencap", CTLTYPE_INT }, \
81 { "udpencap_port", CTLTYPE_INT }, \
82 }
83
84 #define ESPCTL_VARS { \
85 NULL, \
86 &esp_enable, \
87 &udpencap_enable, \
88 &udpencap_port, \
89 }
90
91 #ifdef _KERNEL
92 extern int esp_enable;
93 extern int udpencap_enable;
94 extern int udpencap_port;
95 extern struct espstat espstat;
96 #endif /* _KERNEL */
97 #endif /* _NETINET_IP_ESP_H_ */