1/* $OpenBSD: ip_esp.h,v 1.37 2002/06/09 16:26:10 itojun 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 _NETIPSEC_ESP_VAR_H_
39#define _NETIPSEC_ESP_VAR_H_
40
41/*
42 * These define the algorithm indices into the histogram. They're
43 * presently based on the PF_KEY v2 protocol values which is bogus;
44 * they should be decoupled from the protocol at which time we can
45 * pack them and reduce the size of the array to a reasonable value.
46 */
47#define ESP_ALG_MAX 256 /* NB: could be < but skipjack is 249 */
48
49struct espstat {
50 uint64_t esps_hdrops; /* Packet shorter than header shows */
51 uint64_t esps_nopf; /* Protocol family not supported */
52 uint64_t esps_notdb;
53 uint64_t esps_badkcr;
54 uint64_t esps_qfull;
55 uint64_t esps_noxform;
56 uint64_t esps_badilen;
57 uint64_t esps_wrap; /* Replay counter wrapped around */
58 uint64_t esps_badenc; /* Bad encryption detected */
59 uint64_t esps_badauth; /* Only valid for transforms with auth */
60 uint64_t esps_replay; /* Possible packet replay detected */
61 uint64_t esps_input; /* Input ESP packets */
62 uint64_t esps_output; /* Output ESP packets */
63 uint64_t esps_invalid; /* Trying to use an invalid TDB */
64 uint64_t esps_ibytes; /* Input bytes */
65 uint64_t esps_obytes; /* Output bytes */
66 uint64_t esps_toobig; /* Packet got larger than IP_MAXPACKET */
67 uint64_t esps_pdrops; /* Packet blocked due to policy */
68 uint64_t esps_crypto; /* Crypto processing failure */
69 uint64_t esps_tunnel; /* Tunnel sanity check failure */
70 uint64_t esps_hist[ESP_ALG_MAX]; /* Per-algorithm op count */
71};
72
73#ifdef _KERNEL
74#include <sys/counter.h>
75#include <netinet/in_kdtrace.h>
76
77VNET_DECLARE(int, esp_enable);
78VNET_DECLARE(int, esp_ctr_compatibility);
79#define V_esp_ctr_compatibility VNET(esp_ctr_compatibility)
80VNET_PCPUSTAT_DECLARE(struct espstat, espstat);
81
82#define ESPSTAT_ADD(name, val) \
83 do { \
84 MIB_SDT_PROBE1(esp, count, name, (val)); \
85 VNET_PCPUSTAT_ADD(struct espstat, espstat, name, (val)); \
86 } while (0)
87#define ESPSTAT_INC(name) ESPSTAT_ADD(name, 1)
88#define ESPSTAT_INC2(name, type) \
89 do { \
90 MIB_SDT_PROBE2(esp, count, name, 1, (type)); \
91 VNET_PCPUSTAT_ADD(struct espstat, espstat, name[type], 1); \
92 } while (0)
93
94#define V_esp_enable VNET(esp_enable)
95#endif /* _KERNEL */
96#endif /*_NETIPSEC_ESP_VAR_H_*/