contrib/tcpdump-3.8.3/pf.h

   1 /*
   2  * Copyright (c) 2001 Daniel Hartmeier
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  *    - Redistributions of source code must retain the above copyright
  10  *      notice, this list of conditions and the following disclaimer.
  11  *    - Redistributions in binary form must reproduce the above
  12  *      copyright notice, this list of conditions and the following
  13  *      disclaimer in the documentation and/or other materials provided
  14  *      with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  19  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  20  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  22  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  24  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  26  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  27  * POSSIBILITY OF SUCH DAMAGE.
  28  *
  29  * @(#) $Header: /tcpdump/master/tcpdump/pf.h,v 1.1.2.1 2004/03/28 21:25:03 fenner Exp $ (LBL)
  30  */
  31
  32 /*      from $OpenBSD: pfvar.h,v 1.170 2003/08/22 21:50:34 david Exp $ */
  33
  34 enum    { PF_INOUT=0, PF_IN=1, PF_OUT=2 };
  35 enum    { PF_PASS=0, PF_DROP=1, PF_SCRUB=2, PF_NAT=3, PF_NONAT=4,
  36           PF_BINAT=5, PF_NOBINAT=6, PF_RDR=7, PF_NORDR=8, PF_SYNPROXY_DROP=9 };
  37
  38 /* Reasons code for passing/dropping a packet */
  39 #define PFRES_MATCH     0               /* Explicit match of a rule */
  40 #define PFRES_BADOFF    1               /* Bad offset for pull_hdr */
  41 #define PFRES_FRAG      2               /* Dropping following fragment */
  42 #define PFRES_SHORT     3               /* Dropping short packet */
  43 #define PFRES_NORM      4               /* Dropping by normalizer */
  44 #define PFRES_MEMORY    5               /* Dropped due to lacking mem */
  45 #define PFRES_MAX       6               /* total+1 */
  46
  47 #define PFRES_NAMES { \
  48         "match", \
  49         "bad-offset", \
  50         "fragment", \
  51         "short", \
  52         "normalize", \
  53         "memory", \
  54         NULL \
  55 }
  56
  57 #define PF_RULESET_NAME_SIZE    16
  58
  59 /*      from $OpenBSD: if_pflog.h,v 1.9 2003/07/15 20:27:27 dhartmei Exp $ */
  60
  61 #ifndef IFNAMSIZ
  62 #define IFNAMSIZ        16
  63 #endif
  64
  65 struct pfloghdr {
  66         u_int8_t        length;
  67         sa_family_t     af;
  68         u_int8_t        action;
  69         u_int8_t        reason;
  70         char            ifname[IFNAMSIZ];
  71         char            ruleset[PF_RULESET_NAME_SIZE];
  72         u_int32_t       rulenr;
  73         u_int32_t       subrulenr;
  74         u_int8_t        dir;
  75         u_int8_t        pad[3];
  76 };
  77 #define PFLOG_HDRLEN            sizeof(struct pfloghdr)