sys/netinet/icmp_var.h

   1 /*
   2  * Copyright (c) 1982, 1986, 1993
   3  *      The Regents of the University of California.  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  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  *      @(#)icmp_var.h  8.1 (Berkeley) 6/10/93
  30  * $FreeBSD: src/sys/netinet/icmp_var.h,v 1.15.2.2 2001/12/07 09:23:11 ru Exp $
  31  * $DragonFly: src/sys/netinet/icmp_var.h,v 1.6 2006/05/20 02:42:12 dillon Exp $
  32  */
  33
  34 #ifndef _NETINET_ICMP_VAR_H_
  35 #define _NETINET_ICMP_VAR_H_
  36
  37 #ifndef _SYS_TYPES_H_
  38 #include <sys/types.h>
  39 #endif
  40 #ifndef _SYS_SYSCTL_H_
  41 #include <sys/sysctl.h>
  42 #endif
  43 #ifndef _NETINET_IP_ICMP_H_
  44 #include <netinet/ip_icmp.h>
  45 #endif
  46
  47 #ifdef _KERNEL
  48 #include "opt_icmp_bandlim.h"           /* for ICMP_BANDLIM     */
  49 #endif
  50
  51 /*
  52  * Variables related to this implementation
  53  * of the internet control message protocol.
  54  */
  55 struct  icmpstat {
  56 /* statistics related to icmp packets generated */
  57         u_long  icps_error;             /* # of calls to icmp_error */
  58         u_long  icps_oldshort;          /* no error 'cuz old ip too short */
  59         u_long  icps_oldicmp;           /* no error 'cuz old was icmp */
  60         u_long  icps_outhist[ICMP_MAXTYPE + 1];
  61 /* statistics related to input messages processed */
  62         u_long  icps_badcode;           /* icmp_code out of range */
  63         u_long  icps_tooshort;          /* packet < ICMP_MINLEN */
  64         u_long  icps_checksum;          /* bad checksum */
  65         u_long  icps_badlen;            /* calculated bound mismatch */
  66         u_long  icps_reflect;           /* number of responses */
  67         u_long  icps_inhist[ICMP_MAXTYPE + 1];
  68         u_long  icps_bmcastecho;        /* b/mcast echo requests dropped */
  69         u_long  icps_bmcasttstamp;      /* b/mcast tstamp requests dropped */
  70         u_long  icps_badaddr;           /* bad return address */
  71         u_long  icps_noroute;           /* no route back */
  72 };
  73
  74 /*
  75  * Names for ICMP sysctl objects
  76  */
  77 #define ICMPCTL_MASKREPL        1       /* allow replies to netmask requests */
  78 #define ICMPCTL_STATS           2       /* statistics (read-only) */
  79 #define ICMPCTL_ICMPLIM         3
  80 #define ICMPCTL_MAXID           4
  81
  82 #define ICMPCTL_NAMES { \
  83         { 0, 0 }, \
  84         { "maskrepl", CTLTYPE_INT }, \
  85         { "stats", CTLTYPE_STRUCT }, \
  86         { "icmplim", CTLTYPE_INT }, \
  87 }
  88
  89 #ifdef _KERNEL
  90 SYSCTL_DECL(_net_inet_icmp);
  91 extern struct icmpstat icmpstat;        /* icmp statistics */
  92 #ifdef ICMP_BANDLIM
  93 extern int badport_bandlim (int);
  94 #endif
  95 #define BANDLIM_UNLIMITED -1
  96 #define BANDLIM_ICMP_UNREACH 0
  97 #define BANDLIM_ICMP_ECHO 1
  98 #define BANDLIM_ICMP_TSTAMP 2
  99 #define BANDLIM_RST_CLOSEDPORT 3 /* No connection, and no listeners */
 100 #define BANDLIM_RST_OPENPORT 4   /* No connection, listener */
 101 #define BANDLIM_MAX 4
 102 #endif
 103
 104 #endif