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/* $OpenBSD: ip_ip4.h,v 1.10 1998/05/18 21:10:55 provos 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).
*
* 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.
*
* Copyright (C) 1995, 1996, 1997, 1998 by John Ioannidis, Angelos D. Keromytis
* and Niels Provos.
*
* Permission to use, copy, and modify this software 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.
*/
/*
* IP-inside-IP processing.
* Not quite all the functionality of RFC-1853, but the main idea is there.
*/
struct ip4stat
{
u_int32_t ip4s_ipackets; /* total input packets */
u_int32_t ip4s_opackets; /* total output packets */
u_int32_t ip4s_hdrops; /* packet shorter than header shows */
u_int32_t ip4s_badlen;
u_int32_t ip4s_notip4;
u_int32_t ip4s_qfull;
u_int64_t ip4s_ibytes;
u_int64_t ip4s_obytes;
};
#define IP4_DEFAULT_TTL 0
#define IP4_SAME_TTL -1
#ifdef _KERNEL
struct ip4stat ip4stat;
#endif
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