FreeBSD/Linux Kernel Cross Reference
sys/netipsec/ipip_var.h

     /*      $NetBSD: ipip_var.h,v 1.4 2008/04/23 06:09:05 thorpej Exp $     */
     /*      $FreeBSD: src/sys/netipsec/ipip_var.h,v 1.1.4.1 2003/01/24 05:11:35 sam Exp $   */
     /*      $OpenBSD: ip_ipip.h,v 1.5 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 by 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 _NETINET_IPIP_H_
    #define _NETINET_IPIP_H_
    
    /*
     * IP-inside-IP processing.
     * Not quite all the functionality of RFC-1853, but the main idea is there.
     */
    
    #define IPIP_STAT_IPACKETS      0       /* total input packets */
    #define IPIP_STAT_OPACKETS      1       /* total output packets */
    #define IPIP_STAT_HDROPS        2       /* packet shorter than header shows */
    #define IPIP_STAT_QFULL         3
    #define IPIP_STAT_IBYTES        4
    #define IPIP_STAT_OBYTES        5
    #define IPIP_STAT_PDROPS        6       /* packet dropped due to policy */
    #define IPIP_STAT_SPOOF         7       /* IP spoofing attempts */
    #define IPIP_STAT_FAMILY        8       /* protocol family mismatch */
    #define IPIP_STAT_UNSPEC        9       /* missing tunnel endpoint address */
    
    #define IPIP_NSTATS             10
    
    #ifdef _KERNEL
    extern  int ipip_allow;
    #endif /* _KERNEL */
    #endif /* !_NETINET_IPIP_H_ */

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