headers/posix/netinet/ip_icmp.h

   1 /* Parts of this file are covered under the following copyright */
   2 /*
   3  * Copyright (c) 1982, 1986, 1993
   4  *      The Regents of the University of California.  All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. All advertising materials mentioning features or use of this software
  15  *    must display the following acknowledgement:
  16  *      This product includes software developed by the University of
  17  *      California, Berkeley and its contributors.
  18  * 4. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  *      @(#)ip_icmp.h    8.1 (Berkeley) 6/10/93
  35  */
  36
  37 #ifndef NETINET_IP_ICMP_H
  38 #define NETINET_IP_ICMP_H
  39
  40 #include <endian.h>
  41 #include <netinet/in.h>
  42 #include <netinet/ip.h>
  43 #include <stdint.h>
  44
  45 struct icmp {
  46         uint8_t icmp_type;
  47         uint8_t icmp_code;
  48         uint16_t icmp_cksum;
  49         union {
  50                 uint8_t ih_pptr;
  51                 struct in_addr ih_gwaddr;
  52                 struct ih_idseq {
  53                         uint16_t icd_id;
  54                         uint16_t icd_seq;
  55                 } ih_idseq;
  56                 int32_t ih_void;
  57
  58                 /* ICMP_UNREACH_NEEDFRAG (RFC 1191) */
  59                 struct ih_pmtu {
  60                         uint16_t ipm_void;
  61                         uint16_t ipm_nextmtu;
  62                 } ih_pmtu;
  63         } icmp_hun;
  64         union {
  65                 struct id_ts {
  66                         uint32_t its_otime;
  67                         uint32_t its_rtime;
  68                         uint32_t its_ttime;
  69                 } id_ts;
  70                 struct id_ip {
  71                         struct ip idi_ip;
  72                 } id_ip;
  73                 uint32_t id_mask;
  74                 char id_data[1];
  75         } icmp_dun;
  76 };
  77
  78 #define icmp_pptr      icmp_hun.ih_pptr
  79 #define icmp_gwaddr    icmp_hun.ih_gwaddr
  80 #define icmp_id        icmp_hun.ih_idseq.icd_id
  81 #define icmp_seq       icmp_hun.ih_idseq.icd_seq
  82 #define icmp_void      icmp_hun.ih_void
  83 #define icmp_pmvoid    icmp_hun.ih_pmtu.ipm_void
  84 #define icmp_nextmtu   icmp_hun.ih_pmtu.ipm_nextmtu
  85
  86 #define icmp_otime     icmp_dun.id_ts.its_otime
  87 #define icmp_rtime     icmp_dun.id_ts.its_rtime
  88 #define icmp_ttime     icmp_dun.id_ts.its_ttime
  89 #define icmp_ip        icmp_dun.id_ip.idi_ip
  90 #define icmp_mask      icmp_dun.id_mask
  91 #define icmp_data      icmp_dun.id_data
  92
  93 #define ICMP_MINLEN                        8 /* absolute minimum length */
  94 #define ICMP_ADVLENMIN (8 + sizeof(struct ip) + 8)
  95 #define ICMP_ADVLEN(p) (8 + ((p)->icmp_ip.ip_hl << 2) + 8)
  96
  97 /* Definition of type and code field values.
  98  *http://www.iana.org/assignments/icmp-parameters
  99  */
 100 #define   ICMP_ECHOREPLY                   0/* echo reply */
 101 #define   ICMP_UNREACH                     3/* dest unreachable, codes: */
 102 #define   ICMP_SOURCEQUENCH                4/* packet lost, slow down */
 103 #define   ICMP_REDIRECT                    5/* shorter route, codes: */
 104 #define   ICMP_ALTHOSTADDR                 6/* alternate host address */
 105 #define   ICMP_ECHO                        8/* echo service */
 106 #define   ICMP_ROUTERADVERT                9/* router advertisement */
 107 #define   ICMP_ROUTERSOLICIT              10/* router solicitation */
 108 #define   ICMP_TIMXCEED                   11/* time exceeded, code: */
 109 #define   ICMP_PARAMPROB                  12/* ip header bad */
 110 #define   ICMP_TSTAMP                     13/* timestamp request */
 111 #define   ICMP_TSTAMPREPLY                14/* timestamp reply */
 112 #define   ICMP_IREQ                       15/* information request */
 113 #define   ICMP_IREQREPLY                  16/* information reply */
 114 #define   ICMP_MASKREQ                    17/* address mask request */
 115 #define   ICMP_MASKREPLY                  18/* address mask reply */
 116 #define   ICMP_TRACEROUTE                 30/* traceroute */
 117 #define   ICMP_DATACONVERR                31/* data conversion error */
 118 #define   ICMP_MOBILE_REDIRECT            32/* mobile host redirect */
 119 #define   ICMP_IPV6_WHEREAREYOU           33/* IPv6 where-are-you */
 120 #define   ICMP_IPV6_IAMHERE               34/* IPv6 i-am-here */
 121 #define   ICMP_MOBILE_REGREQUEST          35/* mobile registration req */
 122 #define   ICMP_MOBILE_REGREPLY            36/* mobile registration reply */
 123 #define   ICMP_SKIP                       39/* SKIP */
 124 #define   ICMP_PHOTURIS                   40/* Photuris */
 125
 126 #define   ICMP_MAXTYPE                    40
 127
 128 #define   ICMP_UNREACH_NET                 0/* bad net */
 129 #define   ICMP_UNREACH_HOST                1/* bad host */
 130 #define   ICMP_UNREACH_PROTOCOL            2/* bad protocol */
 131 #define   ICMP_UNREACH_PORT                3/* bad port */
 132 #define   ICMP_UNREACH_NEEDFRAG            4/* IP_DF caused drop */
 133 #define   ICMP_UNREACH_SRCFAIL             5/* src route failed */
 134 #define   ICMP_UNREACH_NET_UNKNOWN         6/* unknown net */
 135 #define   ICMP_UNREACH_HOST_UNKNOWN        7/* unknown host */
 136 #define   ICMP_UNREACH_ISOLATED            8/* src host isolated */
 137 #define   ICMP_UNREACH_NET_PROHIB          9/* for crypto devs */
 138 #define   ICMP_UNREACH_HOST_PROHIB        10/* ditto */
 139 #define   ICMP_UNREACH_TOSNET             11/* bad tos for net */
 140 #define   ICMP_UNREACH_TOSHOST            12/* bad tos for host */
 141 #define   ICMP_UNREACH_FILTER_PROHIB      13/* prohibited access */
 142 #define   ICMP_UNREACH_HOST_PRECEDENCE    14/* precedence violat'n*/
 143 #define   ICMP_UNREACH_PRECEDENCE_CUTOFF  15/* precedence cutoff */
 144
 145 #define   ICMP_REDIRECT_NET                0/* for network */
 146 #define   ICMP_REDIRECT_HOST               1/* for host */
 147 #define   ICMP_REDIRECT_TOSNET             2/* for tos and net */
 148 #define   ICMP_REDIRECT_TOSHOST            3/* for tos and host */
 149
 150 #define   ICMP_ROUTERADVERT_NORMAL         0/* normal advertisement */
 151 #define   ICMP_ROUTERADVERT_NOROUTE_COMMON16/* selective routing */
 152
 153 #define   ICMP_TIMXCEED_INTRANS            0/* ttl==0 in transit */
 154 #define   ICMP_TIMXCEED_REASS              1/* ttl==0 in reass */
 155
 156 #define   ICMP_PARAMPROB_ERRATPTR          0/* req. opt. absent */
 157 #define   ICMP_PARAMPROB_OPTABSENT         1/* req. opt. absent */
 158 #define   ICMP_PARAMPROB_LENGTH            2/* bad length */
 159
 160 #define   ICMP_PHOTURIS_UNKNOWN_INDEX     1/* unknown sec index */
 161 #define   ICMP_PHOTURIS_AUTH_FAILED       2/* auth failed */
 162 #define   ICMP_PHOTURIS_DECRYPT_FAILED    3/* decrypt failed */
 163
 164
 165 #define ICMP_INFOTYPE(type) \
 166         ((type) == ICMP_ECHOREPLY || (type) == ICMP_ECHO || \
 167         (type) == ICMP_ROUTERADVERT || (type) == ICMP_ROUTERSOLICIT || \
 168         (type) == ICMP_TSTAMP || (type) == ICMP_TSTAMPREPLY || \
 169         (type) == ICMP_IREQ || (type) == ICMP_IREQREPLY || \
 170         (type) == ICMP_MASKREQ || (type) == ICMP_MASKREPLY)
 171
 172 #endif /* NETINET_IP_ICMP_H */