external/bsd/tcpdump/dist/pf.h

   1
   2 /*
   3  * Copyright (c) 2001 Daniel Hartmeier
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  *    - Redistributions of source code must retain the above copyright
  11  *      notice, this list of conditions and the following disclaimer.
  12  *    - Redistributions in binary form must reproduce the above
  13  *      copyright notice, this list of conditions and the following
  14  *      disclaimer in the documentation and/or other materials provided
  15  *      with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  18  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  19  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  20  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  21  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  23  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  24  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  25  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  27  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  28  * POSSIBILITY OF SUCH DAMAGE.
  29  *
  30  * @(#) Header: /tcpdump/master/tcpdump/pf.h,v 1.2 2004/04/02 06:36:25 guy Exp (LBL)
  31  */
  32
  33 /*      from $OpenBSD: pfvar.h,v 1.170 2003/08/22 21:50:34 david Exp $ */
  34
  35 enum    { PF_INOUT=0, PF_IN=1, PF_OUT=2 };
  36 enum    { PF_PASS=0, PF_DROP=1, PF_SCRUB=2, PF_NAT=3, PF_NONAT=4,
  37           PF_BINAT=5, PF_NOBINAT=6, PF_RDR=7, PF_NORDR=8, PF_SYNPROXY_DROP=9 };
  38
  39 /* Reasons code for passing/dropping a packet */
  40 #define PFRES_MATCH     0               /* Explicit match of a rule */
  41 #define PFRES_BADOFF    1               /* Bad offset for pull_hdr */
  42 #define PFRES_FRAG      2               /* Dropping following fragment */
  43 #define PFRES_SHORT     3               /* Dropping short packet */
  44 #define PFRES_NORM      4               /* Dropping by normalizer */
  45 #define PFRES_MEMORY    5               /* Dropped due to lacking mem */
  46 #define PFRES_MAX       6               /* total+1 */
  47
  48 #define PFRES_NAMES { \
  49         "match", \
  50         "bad-offset", \
  51         "fragment", \
  52         "short", \
  53         "normalize", \
  54         "memory", \
  55         NULL \
  56 }
  57
  58 #define PF_RULESET_NAME_SIZE    16
  59
  60 /*      from $OpenBSD: if_pflog.h,v 1.9 2003/07/15 20:27:27 dhartmei Exp $ */
  61
  62 #ifndef IFNAMSIZ
  63 #define IFNAMSIZ        16
  64 #endif
  65
  66 struct pfloghdr {
  67         u_int8_t        length;
  68         u_int8_t        af;
  69         u_int8_t        action;
  70         u_int8_t        reason;
  71         char            ifname[IFNAMSIZ];
  72         char            ruleset[PF_RULESET_NAME_SIZE];
  73         u_int32_t       rulenr;
  74         u_int32_t       subrulenr;
  75         u_int8_t        dir;
  76         u_int8_t        pad[3];
  77 };
  78 #define PFLOG_HDRLEN            sizeof(struct pfloghdr)