FreeBSD/Linux Kernel Cross Reference
sys/netinet/icmp_var.h

     /*      $OpenBSD: icmp_var.h,v 1.16 2020/08/22 17:55:54 gnezdo Exp $    */
     /*      $NetBSD: icmp_var.h,v 1.8 1995/03/26 20:32:19 jtc Exp $ */
     
     /*
      * Copyright (c) 1982, 1986, 1993
      *      The Regents of the University of California.  All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. Neither the name of the University nor the names of its contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     *      @(#)icmp_var.h  8.1 (Berkeley) 6/10/93
     */
    
    #ifndef _NETINET_ICMP_VAR_H_
    #define _NETINET_ICMP_VAR_H_
    
    /*
     * Variables related to this implementation
     * of the internet control message protocol.
     */
    struct  icmpstat {
    /* statistics related to icmp packets generated */
            u_long  icps_error;             /* # of calls to icmp_error */
            u_long  icps_toofreq;           /* no error because rate limiter */
            u_long  icps_oldshort;          /* no error because old ip too short */
            u_long  icps_oldicmp;           /* no error because old was icmp */
            u_long  icps_outhist[ICMP_MAXTYPE + 1];
    /* statistics related to input messages processed */
            u_long  icps_badcode;           /* icmp_code out of range */
            u_long  icps_tooshort;          /* packet < ICMP_MINLEN */
            u_long  icps_checksum;          /* bad checksum */
            u_long  icps_badlen;            /* calculated bound mismatch */
            u_long  icps_reflect;           /* number of responses */
            u_long  icps_bmcastecho;        /* rejected broadcast icmps */
            u_long  icps_inhist[ICMP_MAXTYPE + 1];
    };
    
    /*
     * Names for ICMP sysctl objects
     */
    #define ICMPCTL_MASKREPL        1       /* allow replies to netmask requests */
    #define ICMPCTL_BMCASTECHO      2       /* reply to icmps to broadcast/mcast */
    #define ICMPCTL_ERRPPSLIMIT     3       /* ICMP error pps limitation */
    #define ICMPCTL_REDIRACCEPT     4       /* Accept redirects from routers */
    #define ICMPCTL_REDIRTIMEOUT    5       /* Remove routes added via redirects */
    #define ICMPCTL_TSTAMPREPL      6       /* allow replies to timestamp requests */
    #define ICMPCTL_STATS           7       /* ICMP statistics */
    #define ICMPCTL_MAXID           8
    
    #define ICMPCTL_NAMES { \
            { 0, 0 }, \
            { "maskrepl", CTLTYPE_INT }, \
            { "bmcastecho", CTLTYPE_INT }, \
            { "errppslimit", CTLTYPE_INT }, \
            { "rediraccept", CTLTYPE_INT }, \
            { "redirtimeout", CTLTYPE_INT }, \
            { "tstamprepl", CTLTYPE_INT }, \
            { "stats", CTLTYPE_STRUCT } \
    }
    
    #ifdef _KERNEL
    
    #include <sys/percpu.h>
    
    enum icmpstat_counters {
            icps_error,
            icps_toofreq,
            icps_oldshort,
            icps_oldicmp,
            icps_outhist,
            icps_badcode = icps_outhist + ICMP_MAXTYPE + 1,
            icps_tooshort,
            icps_checksum,
            icps_badlen,
            icps_reflect,
            icps_bmcastecho,
            icps_inhist,
            icps_ncounters = icps_inhist + ICMP_MAXTYPE + 1
   };
   
   extern struct cpumem *icmpcounters;
   
   static inline void
   icmpstat_inc(enum icmpstat_counters c)
   {
           counters_inc(icmpcounters, c);
   }
   
   #endif /* _KERNEL */
   #endif /* _NETINET_ICMP_VAR_H_ */

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