1/*	$FreeBSD$	*/
2/*	$OpenBSD: ip_esp.h,v 1.37 2002/06/09 16:26:10 itojun Exp $	*/
3/*-
4 * The authors of this code are John Ioannidis (ji@tla.org),
5 * Angelos D. Keromytis (kermit@csd.uch.gr) and
6 * Niels Provos (provos@physnet.uni-hamburg.de).
7 *
8 * The original version of this code was written by John Ioannidis
9 * for BSD/OS in Athens, Greece, in November 1995.
10 *
11 * Ported to OpenBSD and NetBSD, with additional transforms, in December 1996,
12 * by Angelos D. Keromytis.
13 *
14 * Additional transforms and features in 1997 and 1998 by Angelos D. Keromytis
15 * and Niels Provos.
16 *
17 * Additional features in 1999 by Angelos D. Keromytis.
18 *
19 * Copyright (C) 1995, 1996, 1997, 1998, 1999 by John Ioannidis,
20 * Angelos D. Keromytis and Niels Provos.
21 * Copyright (c) 2001 Angelos D. Keromytis.
22 *
23 * Permission to use, copy, and modify this software with or without fee
24 * is hereby granted, provided that this entire notice is included in
25 * all copies of any software which is or includes a copy or
26 * modification of this software.
27 * You may use this code under the GNU public license if you so wish. Please
28 * contribute changes back to the authors under this freer than GPL license
29 * so that we may further the use of strong encryption without limitations to
30 * all.
31 *
32 * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR
33 * IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY
34 * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE
35 * MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
36 * PURPOSE.
37 */
38
39#ifndef _NETIPSEC_ESP_VAR_H_
40#define _NETIPSEC_ESP_VAR_H_
41
42/*
43 * These define the algorithm indices into the histogram.  They're
44 * presently based on the PF_KEY v2 protocol values which is bogus;
45 * they should be decoupled from the protocol at which time we can
46 * pack them and reduce the size of the array to a reasonable value.
47 */
48#define	ESP_ALG_MAX	256		/* NB: could be < but skipjack is 249 */
49
50struct espstat {
51	uint64_t	esps_hdrops;	/* Packet shorter than header shows */
52	uint64_t	esps_nopf;	/* Protocol family not supported */
53	uint64_t	esps_notdb;
54	uint64_t	esps_badkcr;
55	uint64_t	esps_qfull;
56	uint64_t	esps_noxform;
57	uint64_t	esps_badilen;
58	uint64_t	esps_wrap;	/* Replay counter wrapped around */
59	uint64_t	esps_badenc;	/* Bad encryption detected */
60	uint64_t	esps_badauth;	/* Only valid for transforms with auth */
61	uint64_t	esps_replay;	/* Possible packet replay detected */
62	uint64_t	esps_input;	/* Input ESP packets */
63	uint64_t	esps_output;	/* Output ESP packets */
64	uint64_t	esps_invalid;	/* Trying to use an invalid TDB */
65	uint64_t	esps_ibytes;	/* Input bytes */
66	uint64_t	esps_obytes;	/* Output bytes */
67	uint64_t	esps_toobig;	/* Packet got larger than IP_MAXPACKET */
68	uint64_t	esps_pdrops;	/* Packet blocked due to policy */
69	uint64_t	esps_crypto;	/* Crypto processing failure */
70	uint64_t	esps_tunnel;	/* Tunnel sanity check failure */
71	uint64_t	esps_hist[ESP_ALG_MAX];	/* Per-algorithm op count */
72};
73
74#ifdef _KERNEL
75#include <sys/counter.h>
76
77VNET_DECLARE(int, esp_enable);
78VNET_PCPUSTAT_DECLARE(struct espstat, espstat);
79
80#define	ESPSTAT_ADD(name, val)	\
81    VNET_PCPUSTAT_ADD(struct espstat, espstat, name, (val))
82#define	ESPSTAT_INC(name)	ESPSTAT_ADD(name, 1)
83#define	V_esp_enable	VNET(esp_enable)
84#endif /* _KERNEL */
85#endif /*_NETIPSEC_ESP_VAR_H_*/
86