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 42 #include <netinet/in.h> 43 44 struct icmp { 45 uint8 icmp_type; 46 uint8 icmp_code; 47 uint16 icmp_cksum; 48 union { 49 uint8 ih_pptr; 50 struct in_addr ih_gwaddr; 51 struct ih_idseq { 52 n_short icd_id; 53 n_short icd_seq; 54 } ih_idseq; 55 int32 ih_void; 56 57 /* ICMP_UNREACH_NEEDFRAG (RFC 1191) */ 58 struct ih_pmtu { 59 n_short ipm_void; 60 n_short ipm_nextmtu; 61 } ih_pmtu; 62 } icmp_hun; 63 union { 64 struct id_ts { 65 n_time its_otime; 66 n_time its_rtime; 67 n_time its_ttime; 68 } id_ts; 69 struct id_ip { 70 struct ip idi_ip; 71 } id_ip; 72 uint32 id_mask; 73 char id_data[1]; 74 } icmp_dun; 75 }; 76 77 #define icmp_pptr icmp_hun.ih_pptr 78 #define icmp_gwaddr icmp_hun.ih_gwaddr 79 #define icmp_id icmp_hun.ih_idseq.icd_id 80 #define icmp_seq icmp_hun.ih_idseq.icd_seq 81 #define icmp_void icmp_hun.ih_void 82 #define icmp_pmvoid icmp_hun.ih_pmtu.ipm_void 83 #define icmp_nextmtu icmp_hun.ih_pmtu.ipm_nextmtu 84 85 #define icmp_otime icmp_dun.id_ts.its_otime 86 #define icmp_rtime icmp_dun.id_ts.its_rtime 87 #define icmp_ttime icmp_dun.id_ts.its_ttime 88 #define icmp_ip icmp_dun.id_ip.idi_ip 89 #define icmp_mask icmp_dun.id_mask 90 #define icmp_data icmp_dun.id_data 91 92 #define ICMP_MINLEN 8 /* absolute minimum length */ 93 #define ICMP_ADVLENMIN (8 + sizeof(struct ip) + 8) 94 #define ICMP_ADVLEN(p) (8 + ((p)->icmp_ip.ip_hl << 2) + 8) 95 96 /* Definition of type and code field values. 97 *http://www.iana.org/assignments/icmp-parameters 98 */ 99 #define ICMP_ECHOREPLY 0/* echo reply */ 100 #define ICMP_UNREACH 3/* dest unreachable, codes: */ 101 #define ICMP_SOURCEQUENCH 4/* packet lost, slow down */ 102 #define ICMP_REDIRECT 5/* shorter route, codes: */ 103 #define ICMP_ALTHOSTADDR 6/* alternate host address */ 104 #define ICMP_ECHO 8/* echo service */ 105 #define ICMP_ROUTERADVERT 9/* router advertisement */ 106 #define ICMP_ROUTERSOLICIT 10/* router solicitation */ 107 #define ICMP_TIMXCEED 11/* time exceeded, code: */ 108 #define ICMP_PARAMPROB 12/* ip header bad */ 109 #define ICMP_TSTAMP 13/* timestamp request */ 110 #define ICMP_TSTAMPREPLY 14/* timestamp reply */ 111 #define ICMP_IREQ 15/* information request */ 112 #define ICMP_IREQREPLY 16/* information reply */ 113 #define ICMP_MASKREQ 17/* address mask request */ 114 #define ICMP_MASKREPLY 18/* address mask reply */ 115 #define ICMP_TRACEROUTE 30/* traceroute */ 116 #define ICMP_DATACONVERR 31/* data conversion error */ 117 #define ICMP_MOBILE_REDIRECT 32/* mobile host redirect */ 118 #define ICMP_IPV6_WHEREAREYOU 33/* IPv6 where-are-you */ 119 #define ICMP_IPV6_IAMHERE 34/* IPv6 i-am-here */ 120 #define ICMP_MOBILE_REGREQUEST 35/* mobile registration req */ 121 #define ICMP_MOBILE_REGREPLY 36/* mobile registration reply */ 122 #define ICMP_SKIP 39/* SKIP */ 123 #define ICMP_PHOTURIS 40/* Photuris */ 124 125 #define ICMP_MAXTYPE 40 126 127 #define ICMP_UNREACH_NET 0/* bad net */ 128 #define ICMP_UNREACH_HOST 1/* bad host */ 129 #define ICMP_UNREACH_PROTOCOL 2/* bad protocol */ 130 #define ICMP_UNREACH_PORT 3/* bad port */ 131 #define ICMP_UNREACH_NEEDFRAG 4/* IP_DF caused drop */ 132 #define ICMP_UNREACH_SRCFAIL 5/* src route failed */ 133 #define ICMP_UNREACH_NET_UNKNOWN 6/* unknown net */ 134 #define ICMP_UNREACH_HOST_UNKNOWN 7/* unknown host */ 135 #define ICMP_UNREACH_ISOLATED 8/* src host isolated */ 136 #define ICMP_UNREACH_NET_PROHIB 9/* for crypto devs */ 137 #define ICMP_UNREACH_HOST_PROHIB 10/* ditto */ 138 #define ICMP_UNREACH_TOSNET 11/* bad tos for net */ 139 #define ICMP_UNREACH_TOSHOST 12/* bad tos for host */ 140 #define ICMP_UNREACH_FILTER_PROHIB 13/* prohibited access */ 141 #define ICMP_UNREACH_HOST_PRECEDENCE 14/* precedence violat'n*/ 142 #define ICMP_UNREACH_PRECEDENCE_CUTOFF 15/* precedence cutoff */ 143 144 #define ICMP_REDIRECT_NET 0/* for network */ 145 #define ICMP_REDIRECT_HOST 1/* for host */ 146 #define ICMP_REDIRECT_TOSNET 2/* for tos and net */ 147 #define ICMP_REDIRECT_TOSHOST 3/* for tos and host */ 148 149 #define ICMP_ROUTERADVERT_NORMAL 0/* normal advertisement */ 150 #define ICMP_ROUTERADVERT_NOROUTE_COMMON16/* selective routing */ 151 152 #define ICMP_TIMXCEED_INTRANS 0/* ttl==0 in transit */ 153 #define ICMP_TIMXCEED_REASS 1/* ttl==0 in reass */ 154 155 #define ICMP_PARAMPROB_ERRATPTR 0/* req. opt. absent */ 156 #define ICMP_PARAMPROB_OPTABSENT 1/* req. opt. absent */ 157 #define ICMP_PARAMPROB_LENGTH 2/* bad length */ 158 159 #define ICMP_PHOTURIS_UNKNOWN_INDEX 1/* unknown sec index */ 160 #define ICMP_PHOTURIS_AUTH_FAILED 2/* auth failed */ 161 #define ICMP_PHOTURIS_DECRYPT_FAILED 3/* decrypt failed */ 162 163 164 #define ICMP_INFOTYPE(type) \ 165 ((type) == ICMP_ECHOREPLY || (type) == ICMP_ECHO || \ 166 (type) == ICMP_ROUTERADVERT || (type) == ICMP_ROUTERSOLICIT || \ 167 (type) == ICMP_TSTAMP || (type) == ICMP_TSTAMPREPLY || \ 168 (type) == ICMP_IREQ || (type) == ICMP_IREQREPLY || \ 169 (type) == ICMP_MASKREQ || (type) == ICMP_MASKREPLY) 170 171 #endif /* NETINET_IP_ICMP_H */ 172