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| 1 | /* Copyright (C) 1991-2022 Free Software Foundation, Inc. |
|---|---|
| 2 | This file is part of the GNU C Library. |
| 3 | |
| 4 | The GNU C Library is free software; you can redistribute it and/or |
| 5 | modify it under the terms of the GNU Lesser General Public |
| 6 | License as published by the Free Software Foundation; either |
| 7 | version 2.1 of the License, or (at your option) any later version. |
| 8 | |
| 9 | The GNU C Library is distributed in the hope that it will be useful, |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | Lesser General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU Lesser General Public |
| 15 | License along with the GNU C Library; if not, see |
| 16 | <https://www.gnu.org/licenses/>. */ |
| 17 | |
| 18 | #ifndef __NETINET_IP_ICMP_H |
| 19 | #define __NETINET_IP_ICMP_H 1 |
| 20 | |
| 21 | #include <sys/types.h> |
| 22 | #include <stdint.h> |
| 23 | |
| 24 | __BEGIN_DECLS |
| 25 | |
| 26 | struct icmphdr |
| 27 | { |
| 28 | uint8_t type; /* message type */ |
| 29 | uint8_t code; /* type sub-code */ |
| 30 | uint16_t checksum; |
| 31 | union |
| 32 | { |
| 33 | struct |
| 34 | { |
| 35 | uint16_t id; |
| 36 | uint16_t sequence; |
| 37 | } echo; /* echo datagram */ |
| 38 | uint32_t gateway; /* gateway address */ |
| 39 | struct |
| 40 | { |
| 41 | uint16_t __glibc_reserved; |
| 42 | uint16_t mtu; |
| 43 | } frag; /* path mtu discovery */ |
| 44 | } un; |
| 45 | }; |
| 46 | |
| 47 | #define ICMP_ECHOREPLY 0 /* Echo Reply */ |
| 48 | #define ICMP_DEST_UNREACH 3 /* Destination Unreachable */ |
| 49 | #define ICMP_SOURCE_QUENCH 4 /* Source Quench */ |
| 50 | #define ICMP_REDIRECT 5 /* Redirect (change route) */ |
| 51 | #define ICMP_ECHO 8 /* Echo Request */ |
| 52 | #define ICMP_TIME_EXCEEDED 11 /* Time Exceeded */ |
| 53 | #define ICMP_PARAMETERPROB 12 /* Parameter Problem */ |
| 54 | #define ICMP_TIMESTAMP 13 /* Timestamp Request */ |
| 55 | #define ICMP_TIMESTAMPREPLY 14 /* Timestamp Reply */ |
| 56 | #define ICMP_INFO_REQUEST 15 /* Information Request */ |
| 57 | #define ICMP_INFO_REPLY 16 /* Information Reply */ |
| 58 | #define ICMP_ADDRESS 17 /* Address Mask Request */ |
| 59 | #define ICMP_ADDRESSREPLY 18 /* Address Mask Reply */ |
| 60 | #define NR_ICMP_TYPES 18 |
| 61 | |
| 62 | |
| 63 | /* Codes for UNREACH. */ |
| 64 | #define ICMP_NET_UNREACH 0 /* Network Unreachable */ |
| 65 | #define ICMP_HOST_UNREACH 1 /* Host Unreachable */ |
| 66 | #define ICMP_PROT_UNREACH 2 /* Protocol Unreachable */ |
| 67 | #define ICMP_PORT_UNREACH 3 /* Port Unreachable */ |
| 68 | #define ICMP_FRAG_NEEDED 4 /* Fragmentation Needed/DF set */ |
| 69 | #define ICMP_SR_FAILED 5 /* Source Route failed */ |
| 70 | #define ICMP_NET_UNKNOWN 6 |
| 71 | #define ICMP_HOST_UNKNOWN 7 |
| 72 | #define ICMP_HOST_ISOLATED 8 |
| 73 | #define ICMP_NET_ANO 9 |
| 74 | #define ICMP_HOST_ANO 10 |
| 75 | #define ICMP_NET_UNR_TOS 11 |
| 76 | #define ICMP_HOST_UNR_TOS 12 |
| 77 | #define ICMP_PKT_FILTERED 13 /* Packet filtered */ |
| 78 | #define ICMP_PREC_VIOLATION 14 /* Precedence violation */ |
| 79 | #define ICMP_PREC_CUTOFF 15 /* Precedence cut off */ |
| 80 | #define NR_ICMP_UNREACH 15 /* instead of hardcoding immediate value */ |
| 81 | |
| 82 | /* Codes for REDIRECT. */ |
| 83 | #define ICMP_REDIR_NET 0 /* Redirect Net */ |
| 84 | #define ICMP_REDIR_HOST 1 /* Redirect Host */ |
| 85 | #define ICMP_REDIR_NETTOS 2 /* Redirect Net for TOS */ |
| 86 | #define ICMP_REDIR_HOSTTOS 3 /* Redirect Host for TOS */ |
| 87 | |
| 88 | /* Codes for TIME_EXCEEDED. */ |
| 89 | #define ICMP_EXC_TTL 0 /* TTL count exceeded */ |
| 90 | #define ICMP_EXC_FRAGTIME 1 /* Fragment Reass time exceeded */ |
| 91 | |
| 92 | /* Codes for ICMP_EXT_ECHO (PROBE) */ |
| 93 | #define ICMP_EXT_ECHO 42 |
| 94 | #define ICMP_EXT_ECHOREPLY 43 |
| 95 | #define ICMP_EXT_CODE_MAL_QUERY 1 /* Malformed Query */ |
| 96 | #define ICMP_EXT_CODE_NO_IF 2 /* No such Interface */ |
| 97 | #define ICMP_EXT_CODE_NO_TABLE_ENT 3 /* No table entry */ |
| 98 | #define ICMP_EXT_CODE_MULT_IFS 4 /* Multiple Interfaces Satisfy Query */ |
| 99 | |
| 100 | /* Constants for EXT_ECHO (PROBE) */ |
| 101 | #define ICMP_EXT_ECHOREPLY_ACTIVE (1 << 2)/* active bit in reply */ |
| 102 | #define ICMP_EXT_ECHOREPLY_IPV4 (1 << 1)/* ipv4 bit in reply */ |
| 103 | #define ICMP_EXT_ECHOREPLY_IPV6 1 /* ipv6 bit in reply */ |
| 104 | #define ICMP_EXT_ECHO_CTYPE_NAME 1 |
| 105 | #define ICMP_EXT_ECHO_CTYPE_INDEX 2 |
| 106 | #define ICMP_EXT_ECHO_CTYPE_ADDR 3 |
| 107 | #define ICMP_AFI_IP 1 /* Address Family Identifier for IPV4 */ |
| 108 | #define ICMP_AFI_IP6 2 /* Address Family Identifier for IPV6 */ |
| 109 | |
| 110 | |
| 111 | #ifdef __USE_MISC |
| 112 | /* |
| 113 | * Copyright (c) 1982, 1986, 1993 |
| 114 | * The Regents of the University of California. All rights reserved. |
| 115 | * |
| 116 | * Redistribution and use in source and binary forms, with or without |
| 117 | * modification, are permitted provided that the following conditions |
| 118 | * are met: |
| 119 | * 1. Redistributions of source code must retain the above copyright |
| 120 | * notice, this list of conditions and the following disclaimer. |
| 121 | * 2. Redistributions in binary form must reproduce the above copyright |
| 122 | * notice, this list of conditions and the following disclaimer in the |
| 123 | * documentation and/or other materials provided with the distribution. |
| 124 | * 4. Neither the name of the University nor the names of its contributors |
| 125 | * may be used to endorse or promote products derived from this software |
| 126 | * without specific prior written permission. |
| 127 | * |
| 128 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 129 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 130 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 131 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 132 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 133 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 134 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 135 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 136 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 137 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 138 | * SUCH DAMAGE. |
| 139 | * |
| 140 | * @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93 |
| 141 | */ |
| 142 | |
| 143 | #include <netinet/in.h> |
| 144 | #include <netinet/ip.h> |
| 145 | |
| 146 | /* |
| 147 | * Internal of an ICMP Router Advertisement |
| 148 | */ |
| 149 | struct icmp_ra_addr |
| 150 | { |
| 151 | uint32_t ira_addr; |
| 152 | uint32_t ira_preference; |
| 153 | }; |
| 154 | |
| 155 | struct icmp |
| 156 | { |
| 157 | uint8_t icmp_type; /* type of message, see below */ |
| 158 | uint8_t icmp_code; /* type sub code */ |
| 159 | uint16_t icmp_cksum; /* ones complement checksum of struct */ |
| 160 | union |
| 161 | { |
| 162 | unsigned char ih_pptr; /* ICMP_PARAMPROB */ |
| 163 | struct in_addr ih_gwaddr; /* gateway address */ |
| 164 | struct ih_idseq /* echo datagram */ |
| 165 | { |
| 166 | uint16_t icd_id; |
| 167 | uint16_t icd_seq; |
| 168 | } ih_idseq; |
| 169 | uint32_t ih_void; |
| 170 | |
| 171 | /* ICMP_UNREACH_NEEDFRAG -- Path MTU Discovery (RFC1191) */ |
| 172 | struct ih_pmtu |
| 173 | { |
| 174 | uint16_t ipm_void; |
| 175 | uint16_t ipm_nextmtu; |
| 176 | } ih_pmtu; |
| 177 | |
| 178 | struct ih_rtradv |
| 179 | { |
| 180 | uint8_t irt_num_addrs; |
| 181 | uint8_t irt_wpa; |
| 182 | uint16_t irt_lifetime; |
| 183 | } ih_rtradv; |
| 184 | } icmp_hun; |
| 185 | #define icmp_pptr icmp_hun.ih_pptr |
| 186 | #define icmp_gwaddr icmp_hun.ih_gwaddr |
| 187 | #define icmp_id icmp_hun.ih_idseq.icd_id |
| 188 | #define icmp_seq icmp_hun.ih_idseq.icd_seq |
| 189 | #define icmp_void icmp_hun.ih_void |
| 190 | #define icmp_pmvoid icmp_hun.ih_pmtu.ipm_void |
| 191 | #define icmp_nextmtu icmp_hun.ih_pmtu.ipm_nextmtu |
| 192 | #define icmp_num_addrs icmp_hun.ih_rtradv.irt_num_addrs |
| 193 | #define icmp_wpa icmp_hun.ih_rtradv.irt_wpa |
| 194 | #define icmp_lifetime icmp_hun.ih_rtradv.irt_lifetime |
| 195 | union |
| 196 | { |
| 197 | struct |
| 198 | { |
| 199 | uint32_t its_otime; |
| 200 | uint32_t its_rtime; |
| 201 | uint32_t its_ttime; |
| 202 | } id_ts; |
| 203 | struct |
| 204 | { |
| 205 | struct ip idi_ip; |
| 206 | /* options and then 64 bits of data */ |
| 207 | } id_ip; |
| 208 | struct icmp_ra_addr id_radv; |
| 209 | uint32_t id_mask; |
| 210 | uint8_t id_data[1]; |
| 211 | } icmp_dun; |
| 212 | #define icmp_otime icmp_dun.id_ts.its_otime |
| 213 | #define icmp_rtime icmp_dun.id_ts.its_rtime |
| 214 | #define icmp_ttime icmp_dun.id_ts.its_ttime |
| 215 | #define icmp_ip icmp_dun.id_ip.idi_ip |
| 216 | #define icmp_radv icmp_dun.id_radv |
| 217 | #define icmp_mask icmp_dun.id_mask |
| 218 | #define icmp_data icmp_dun.id_data |
| 219 | }; |
| 220 | |
| 221 | /* |
| 222 | * Lower bounds on packet lengths for various types. |
| 223 | * For the error advice packets must first insure that the |
| 224 | * packet is large enough to contain the returned ip header. |
| 225 | * Only then can we do the check to see if 64 bits of packet |
| 226 | * data have been returned, since we need to check the returned |
| 227 | * ip header length. |
| 228 | */ |
| 229 | #define ICMP_MINLEN 8 /* abs minimum */ |
| 230 | #define ICMP_TSLEN (8 + 3 * sizeof (n_time)) /* timestamp */ |
| 231 | #define ICMP_MASKLEN 12 /* address mask */ |
| 232 | #define ICMP_ADVLENMIN (8 + sizeof (struct ip) + 8) /* min */ |
| 233 | #ifndef _IP_VHL |
| 234 | #define ICMP_ADVLEN(p) (8 + ((p)->icmp_ip.ip_hl << 2) + 8) |
| 235 | /* N.B.: must separately check that ip_hl >= 5 */ |
| 236 | #else |
| 237 | #define ICMP_ADVLEN(p) (8 + (IP_VHL_HL((p)->icmp_ip.ip_vhl) << 2) + 8) |
| 238 | /* N.B.: must separately check that header length >= 5 */ |
| 239 | #endif |
| 240 | |
| 241 | /* Definition of type and code fields. */ |
| 242 | /* defined above: ICMP_ECHOREPLY, ICMP_REDIRECT, ICMP_ECHO */ |
| 243 | #define ICMP_UNREACH 3 /* dest unreachable, codes: */ |
| 244 | #define ICMP_SOURCEQUENCH 4 /* packet lost, slow down */ |
| 245 | #define ICMP_ROUTERADVERT 9 /* router advertisement */ |
| 246 | #define ICMP_ROUTERSOLICIT 10 /* router solicitation */ |
| 247 | #define ICMP_TIMXCEED 11 /* time exceeded, code: */ |
| 248 | #define ICMP_PARAMPROB 12 /* ip header bad */ |
| 249 | #define ICMP_TSTAMP 13 /* timestamp request */ |
| 250 | #define ICMP_TSTAMPREPLY 14 /* timestamp reply */ |
| 251 | #define ICMP_IREQ 15 /* information request */ |
| 252 | #define ICMP_IREQREPLY 16 /* information reply */ |
| 253 | #define ICMP_MASKREQ 17 /* address mask request */ |
| 254 | #define ICMP_MASKREPLY 18 /* address mask reply */ |
| 255 | |
| 256 | #define ICMP_MAXTYPE 18 |
| 257 | |
| 258 | /* UNREACH codes */ |
| 259 | #define ICMP_UNREACH_NET 0 /* bad net */ |
| 260 | #define ICMP_UNREACH_HOST 1 /* bad host */ |
| 261 | #define ICMP_UNREACH_PROTOCOL 2 /* bad protocol */ |
| 262 | #define ICMP_UNREACH_PORT 3 /* bad port */ |
| 263 | #define ICMP_UNREACH_NEEDFRAG 4 /* IP_DF caused drop */ |
| 264 | #define ICMP_UNREACH_SRCFAIL 5 /* src route failed */ |
| 265 | #define ICMP_UNREACH_NET_UNKNOWN 6 /* unknown net */ |
| 266 | #define ICMP_UNREACH_HOST_UNKNOWN 7 /* unknown host */ |
| 267 | #define ICMP_UNREACH_ISOLATED 8 /* src host isolated */ |
| 268 | #define ICMP_UNREACH_NET_PROHIB 9 /* net denied */ |
| 269 | #define ICMP_UNREACH_HOST_PROHIB 10 /* host denied */ |
| 270 | #define ICMP_UNREACH_TOSNET 11 /* bad tos for net */ |
| 271 | #define ICMP_UNREACH_TOSHOST 12 /* bad tos for host */ |
| 272 | #define ICMP_UNREACH_FILTER_PROHIB 13 /* admin prohib */ |
| 273 | #define ICMP_UNREACH_HOST_PRECEDENCE 14 /* host prec vio. */ |
| 274 | #define ICMP_UNREACH_PRECEDENCE_CUTOFF 15 /* prec cutoff */ |
| 275 | |
| 276 | /* REDIRECT codes */ |
| 277 | #define ICMP_REDIRECT_NET 0 /* for network */ |
| 278 | #define ICMP_REDIRECT_HOST 1 /* for host */ |
| 279 | #define ICMP_REDIRECT_TOSNET 2 /* for tos and net */ |
| 280 | #define ICMP_REDIRECT_TOSHOST 3 /* for tos and host */ |
| 281 | |
| 282 | /* TIMEXCEED codes */ |
| 283 | #define ICMP_TIMXCEED_INTRANS 0 /* ttl==0 in transit */ |
| 284 | #define ICMP_TIMXCEED_REASS 1 /* ttl==0 in reass */ |
| 285 | |
| 286 | /* PARAMPROB code */ |
| 287 | #define ICMP_PARAMPROB_OPTABSENT 1 /* req. opt. absent */ |
| 288 | |
| 289 | #define ICMP_INFOTYPE(type) \ |
| 290 | ((type) == ICMP_ECHOREPLY || (type) == ICMP_ECHO \ |
| 291 | || (type) == ICMP_ROUTERADVERT || (type) == ICMP_ROUTERSOLICIT \ |
| 292 | || (type) == ICMP_TSTAMP || (type) == ICMP_TSTAMPREPLY \ |
| 293 | || (type) == ICMP_IREQ || (type) == ICMP_IREQREPLY \ |
| 294 | || (type) == ICMP_MASKREQ || (type) == ICMP_MASKREPLY) |
| 295 | |
| 296 | #endif /* __USE_MISC */ |
| 297 | |
| 298 | __END_DECLS |
| 299 | |
| 300 | #endif /* netinet/ip_icmp.h */ |
| 301 |
Warning: This file is not a C or C++ file. It does not have highlighting.