The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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

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    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  * 4. 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  * $FreeBSD$
   31  */
   32 
   33 #ifndef _NETINET_ICMP_VAR_H_
   34 #define _NETINET_ICMP_VAR_H_
   35 
   36 
   37 /*
   38  * Variables related to this implementation
   39  * of the internet control message protocol.
   40  */
   41 struct  icmpstat {
   42 /* statistics related to icmp packets generated */
   43         u_long  icps_error;             /* # of calls to icmp_error */
   44         u_long  icps_oldshort;          /* no error 'cuz old ip too short */
   45         u_long  icps_oldicmp;           /* no error 'cuz old was icmp */
   46         u_long  icps_outhist[ICMP_MAXTYPE + 1];
   47 /* statistics related to input messages processed */
   48         u_long  icps_badcode;           /* icmp_code out of range */
   49         u_long  icps_tooshort;          /* packet < ICMP_MINLEN */
   50         u_long  icps_checksum;          /* bad checksum */
   51         u_long  icps_badlen;            /* calculated bound mismatch */
   52         u_long  icps_reflect;           /* number of responses */
   53         u_long  icps_inhist[ICMP_MAXTYPE + 1];
   54         u_long  icps_bmcastecho;        /* b/mcast echo requests dropped */
   55         u_long  icps_bmcasttstamp;      /* b/mcast tstamp requests dropped */
   56         u_long  icps_badaddr;           /* bad return address */
   57         u_long  icps_noroute;           /* no route back */
   58 };
   59 
   60 /*
   61  * Names for ICMP sysctl objects
   62  */
   63 #define ICMPCTL_MASKREPL        1       /* allow replies to netmask requests */
   64 #define ICMPCTL_STATS           2       /* statistics (read-only) */
   65 #define ICMPCTL_ICMPLIM         3
   66 #define ICMPCTL_MAXID           4
   67 
   68 #define ICMPCTL_NAMES { \
   69         { 0, 0 }, \
   70         { "maskrepl", CTLTYPE_INT }, \
   71         { "stats", CTLTYPE_STRUCT }, \
   72         { "icmplim", CTLTYPE_INT }, \
   73 }
   74 
   75 #ifdef _KERNEL
   76 SYSCTL_DECL(_net_inet_icmp);
   77 extern struct icmpstat icmpstat;        /* icmp statistics */
   78 extern int badport_bandlim(int);
   79 #define BANDLIM_UNLIMITED -1
   80 #define BANDLIM_ICMP_UNREACH 0
   81 #define BANDLIM_ICMP_ECHO 1
   82 #define BANDLIM_ICMP_TSTAMP 2
   83 #define BANDLIM_RST_CLOSEDPORT 3 /* No connection, and no listeners */
   84 #define BANDLIM_RST_OPENPORT 4   /* No connection, listener */
   85 #define BANDLIM_ICMP6_UNREACH 5
   86 #define BANDLIM_MAX 5
   87 #endif
   88 
   89 #endif

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