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
76VNET_DECLARE(int, esp_enable);
77VNET_PCPUSTAT_DECLARE(struct espstat, espstat);
78
79#define	ESPSTAT_ADD(name, val)	\
80    VNET_PCPUSTAT_ADD(struct espstat, espstat, name, (val))
81#define	ESPSTAT_INC(name)	ESPSTAT_ADD(name, 1)
82#define	V_esp_enable	VNET(esp_enable)
83#endif /* _KERNEL */
84#endif /*_NETIPSEC_ESP_VAR_H_*/
85