contrib/tcpdump-3.9/enc.h

   1 /* @(#) $Header: /tcpdump/master/tcpdump/enc.h,v 1.1 2003/03/08 08:55:33 guy Exp $ (LBL) */
   2 /* From $OpenBSD: if_enc.h,v 1.8 2001/06/25 05:14:00 angelos 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  * This code was written by John Ioannidis for BSD/OS in Athens, Greece,
   9  * 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  * Copyright (C) 1995, 1996, 1997, 1998 by John Ioannidis, Angelos D. Keromytis
  18  * and Niels Provos.
  19  * Copyright (c) 2001, Angelos D. Keromytis.
  20  *
  21  * Permission to use, copy, and modify this software with or without fee
  22  * is hereby granted, provided that this entire notice is included in
  23  * all copies of any software which is or includes a copy or
  24  * modification of this software.
  25  * You may use this code under the GNU public license if you so wish. Please
  26  * contribute changes back to the authors under this freer than GPL license
  27  * so that we may further the use of strong encryption without limitations to
  28  * all.
  29  *
  30  * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR
  31  * IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY
  32  * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE
  33  * MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
  34  * PURPOSE.
  35  */
  36
  37 #define ENC_HDRLEN      12
  38
  39 /* From $OpenBSD: mbuf.h,v 1.56 2002/01/25 15:50:23 art Exp $   */
  40 #define M_CONF          0x0400  /* packet was encrypted (ESP-transport) */
  41 #define M_AUTH          0x0800  /* packet was authenticated (AH) */
  42
  43 struct enchdr {
  44         u_int32_t af;
  45         u_int32_t spi;
  46         u_int32_t flags;
  47 };