dist/tcpdump/enc.h

   1 /*      $NetBSD$        */
   2
   3 /* @(#) Header: /tcpdump/master/tcpdump/enc.h,v 1.1 2003/03/08 08:55:33 guy Exp (LBL) */
   4 /* From $OpenBSD: if_enc.h,v 1.8 2001/06/25 05:14:00 angelos Exp $ */
   5 /*
   6  * The authors of this code are John Ioannidis (ji@tla.org),
   7  * Angelos D. Keromytis (kermit@csd.uch.gr) and
   8  * Niels Provos (provos@physnet.uni-hamburg.de).
   9  *
  10  * This code was written by John Ioannidis for BSD/OS in Athens, Greece,
  11  * in November 1995.
  12  *
  13  * Ported to OpenBSD and NetBSD, with additional transforms, in December 1996,
  14  * by Angelos D. Keromytis.
  15  *
  16  * Additional transforms and features in 1997 and 1998 by Angelos D. Keromytis
  17  * and Niels Provos.
  18  *
  19  * Copyright (C) 1995, 1996, 1997, 1998 by John Ioannidis, Angelos D. Keromytis
  20  * and Niels Provos.
  21  * Copyright (c) 2001, Angelos D. Keromytis.
  22  *
  23  * Permission to use, copy, and modify this software with or without fee
  24  * is hereby granted, provided that this entire notice is included in
  25  * all copies of any software which is or includes a copy or
  26  * modification of this software.
  27  * You may use this code under the GNU public license if you so wish. Please
  28  * contribute changes back to the authors under this freer than GPL license
  29  * so that we may further the use of strong encryption without limitations to
  30  * all.
  31  *
  32  * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR
  33  * IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY
  34  * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE
  35  * MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
  36  * PURPOSE.
  37  */
  38
  39 #define ENC_HDRLEN      12
  40
  41 /* From $OpenBSD: mbuf.h,v 1.56 2002/01/25 15:50:23 art Exp $   */
  42 #define M_CONF          0x0400  /* packet was encrypted (ESP-transport) */
  43 #define M_AUTH          0x0800  /* packet was authenticated (AH) */
  44
  45 struct enchdr {
  46         u_int32_t af;
  47         u_int32_t spi;
  48         u_int32_t flags;
  49 };