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/netns/ns_error.h

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    1 /*      $NetBSD: ns_error.h,v 1.10 2003/08/07 16:33:45 agc Exp $        */
    2 
    3 /*
    4  * Copyright (c) 1984, 1988, 1993
    5  *      The Regents of the University of California.  All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  * 3. Neither the name of the University nor the names of its contributors
   16  *    may be used to endorse or promote products derived from this software
   17  *    without specific prior written permission.
   18  *
   19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   29  * SUCH DAMAGE.
   30  *
   31  *      @(#)ns_error.h  8.1 (Berkeley) 6/10/93
   32  */
   33 
   34 /*
   35  * Xerox NS error messages
   36  */
   37 
   38 struct ns_errp {
   39         u_int16_t       ns_err_num;             /* Error Number */
   40         u_int16_t       ns_err_param;           /* Error Parameter */
   41         struct idp      ns_err_idp;             /* Initial segment of offending
   42                                                    packet */
   43         u_int8_t        ns_err_lev2[12];        /* at least this much higher
   44                                                    level protocol */
   45 };
   46 struct  ns_epidp {
   47         struct idp ns_ep_idp;
   48         struct ns_errp ns_ep_errp;
   49 };
   50 
   51 #define NS_ERR_UNSPEC   0       /* Unspecified Error detected at dest. */
   52 #define NS_ERR_BADSUM   1       /* Bad Checksum detected at dest */
   53 #define NS_ERR_NOSOCK   2       /* Specified socket does not exist at dest*/
   54 #define NS_ERR_FULLUP   3       /* Dest. refuses packet due to resource lim.*/
   55 #define NS_ERR_UNSPEC_T 0x200   /* Unspec. Error occurred before reaching dest*/
   56 #define NS_ERR_BADSUM_T 0x201   /* Bad Checksum detected in transit */
   57 #define NS_ERR_UNREACH_HOST     0x202   /* Dest cannot be reached from here*/
   58 #define NS_ERR_TOO_OLD  0x203   /* Packet x'd 15 routers without delivery*/
   59 #define NS_ERR_TOO_BIG  0x204   /* Packet too large to be forwarded through
   60                                    some intermediate gateway.  The error
   61                                    parameter field contains the max packet
   62                                    size that can be accommodated */
   63 #define NS_ERR_MAX 20
   64 
   65 /*
   66  * Variables related to this implementation
   67  * of the network systems error message protocol.
   68  */
   69 struct  ns_errstat {
   70 /* statistics related to ns_err packets generated */
   71         int     ns_es_error;            /* # of calls to ns_error */
   72         int     ns_es_oldshort;         /* no error 'cuz old ip too short */
   73         int     ns_es_oldns_err;        /* no error 'cuz old was ns_err */
   74         int     ns_es_outhist[NS_ERR_MAX];
   75 /* statistics related to input messages processed */
   76         int     ns_es_badcode;          /* ns_err_code out of range */
   77         int     ns_es_tooshort;         /* packet < IDP_MINLEN */
   78         int     ns_es_checksum;         /* bad checksum */
   79         int     ns_es_badlen;           /* calculated bound mismatch */
   80         int     ns_es_reflect;          /* number of responses */
   81         int     ns_es_inhist[NS_ERR_MAX];
   82         u_int16_t ns_es_codes[NS_ERR_MAX];/* which error code for outhist
   83                                            since we might not know all */
   84 };
   85 
   86 #ifdef _KERNEL
   87 extern  struct  ns_errstat ns_errstat;
   88 #endif

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