text: /*	$NetBSD: ah_var.h,v 1.1.2.1 2004/05/10 15:00:45 tron Exp $	*/
  /*	$FreeBSD: src/sys/netipsec/ah_var.h,v 1.1.4.1 2003/01/24 05:11:35 sam Exp $	*/
  /*	$OpenBSD: ip_ah.h,v 1.29 2002/06/09 16:26:10 itojun 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 _NETIPSEC_AH_VAR_H_
  #define _NETIPSEC_AH_VAR_H_
  
  /*
   * These define the algorithm indices into the histogram.  They're
   * presently based on the PF_KEY v2 protocol values which is bogus;
   * they should be decoupled from the protocol at which time we can
   * pack them and reduce the size of the array to a minimum.
   */
  #define	AH_ALG_MAX	16
  
  struct ahstat {
  	u_int64_t	ahs_hdrops;	/* Packet shorter than header shows */
  	u_int64_t	ahs_nopf;	/* Protocol family not supported */
  	u_int64_t	ahs_notdb;
  	u_int64_t	ahs_badkcr;
  	u_int64_t	ahs_badauth;
  	u_int64_t	ahs_noxform;
  	u_int64_t	ahs_qfull;
  	u_int64_t	ahs_wrap;
  	u_int64_t	ahs_replay;
  	u_int64_t	ahs_badauthl;	/* Bad authenticator length */
  	u_int64_t	ahs_input;	/* Input AH packets */
  	u_int64_t	ahs_output;	/* Output AH packets */
  	u_int64_t	ahs_invalid;	/* Trying to use an invalid TDB */
  	u_int64_t	ahs_ibytes;	/* Input bytes */
  	u_int64_t	ahs_obytes;	/* Output bytes */
  	u_int64_t	ahs_toobig;	/* Packet got larger than IP_MAXPACKET */
  	u_int64_t	ahs_pdrops;	/* Packet blocked due to policy */
  	u_int64_t	ahs_crypto;	/* Crypto processing failure */
  	u_int64_t	ahs_tunnel;	/* Tunnel sanity check failure */
  	u_int64_t	ahs_hist[AH_ALG_MAX];	/* Per-algorithm op count */
  };
  
  #ifdef _KERNEL
  extern	int ah_enable;
  extern	int ah_cleartos;
  extern	struct ahstat ahstat;
  #endif /* _KERNEL */
  #endif /*_NETIPSEC_AH_VAR_H_*/
  