bsd/netns/ns_error.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * Copyright (c) 1984, 1988, 1993
  24  *      The Regents of the University of California.  All rights reserved.
  25  *
  26  * Redistribution and use in source and binary forms, with or without
  27  * modification, are permitted provided that the following conditions
  28  * are met:
  29  * 1. Redistributions of source code must retain the above copyright
  30  *    notice, this list of conditions and the following disclaimer.
  31  * 2. Redistributions in binary form must reproduce the above copyright
  32  *    notice, this list of conditions and the following disclaimer in the
  33  *    documentation and/or other materials provided with the distribution.
  34  * 3. All advertising materials mentioning features or use of this software
  35  *    must display the following acknowledgement:
  36  *      This product includes software developed by the University of
  37  *      California, Berkeley and its contributors.
  38  * 4. Neither the name of the University nor the names of its contributors
  39  *    may be used to endorse or promote products derived from this software
  40  *    without specific prior written permission.
  41  *
  42  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  43  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  44  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  45  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  46  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  47  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  48  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  49  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  50  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  51  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  52  * SUCH DAMAGE.
  53  *
  54  *      @(#)ns_error.h  8.1 (Berkeley) 6/10/93
  55  */
  56
  57 /*
  58  * Xerox NS error messages
  59  */
  60
  61 struct ns_errp {
  62         u_short         ns_err_num;             /* Error Number */
  63         u_short         ns_err_param;           /* Error Parameter */
  64         struct idp      ns_err_idp;             /* Initial segment of offending
  65                                                    packet */
  66         u_char          ns_err_lev2[12];        /* at least this much higher
  67                                                    level protocol */
  68 };
  69 struct  ns_epidp {
  70         struct idp ns_ep_idp;
  71         struct ns_errp ns_ep_errp;
  72 };
  73
  74 #define NS_ERR_UNSPEC   0       /* Unspecified Error detected at dest. */
  75 #define NS_ERR_BADSUM   1       /* Bad Checksum detected at dest */
  76 #define NS_ERR_NOSOCK   2       /* Specified socket does not exist at dest*/
  77 #define NS_ERR_FULLUP   3       /* Dest. refuses packet due to resource lim.*/
  78 #define NS_ERR_UNSPEC_T 0x200   /* Unspec. Error occured before reaching dest*/
  79 #define NS_ERR_BADSUM_T 0x201   /* Bad Checksum detected in transit */
  80 #define NS_ERR_UNREACH_HOST     0x202   /* Dest cannot be reached from here*/
  81 #define NS_ERR_TOO_OLD  0x203   /* Packet x'd 15 routers without delivery*/
  82 #define NS_ERR_TOO_BIG  0x204   /* Packet too large to be forwarded through
  83                                    some intermediate gateway.  The error
  84                                    parameter field contains the max packet
  85                                    size that can be accommodated */
  86 #define NS_ERR_MAX 20
  87
  88 /*
  89  * Variables related to this implementation
  90  * of the network systems error message protocol.
  91  */
  92 struct  ns_errstat {
  93 /* statistics related to ns_err packets generated */
  94         int     ns_es_error;            /* # of calls to ns_error */
  95         int     ns_es_oldshort;         /* no error 'cuz old ip too short */
  96         int     ns_es_oldns_err;        /* no error 'cuz old was ns_err */
  97         int     ns_es_outhist[NS_ERR_MAX];
  98 /* statistics related to input messages processed */
  99         int     ns_es_badcode;          /* ns_err_code out of range */
 100         int     ns_es_tooshort;         /* packet < IDP_MINLEN */
 101         int     ns_es_checksum;         /* bad checksum */
 102         int     ns_es_badlen;           /* calculated bound mismatch */
 103         int     ns_es_reflect;          /* number of responses */
 104         int     ns_es_inhist[NS_ERR_MAX];
 105         u_short ns_es_codes[NS_ERR_MAX];/* which error code for outhist
 106                                            since we might not know all */
 107 };
 108
 109 #ifdef KERNEL
 110 struct  ns_errstat ns_errstat;
 111 #endif