| | 1 | /* |
| | 2 | * Copyright (c) 2008-2018 Apple Inc. All rights reserved. |
| | 3 | * |
| | 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
| | 5 | * |
| | 6 | * This file contains Original Code and/or Modifications of Original Code |
| | 7 | * as defined in and that are subject to the Apple Public Source License |
| | 8 | * Version 2.0 (the 'License'). You may not use this file except in |
| | 9 | * compliance with the License. The rights granted to you under the License |
| | 10 | * may not be used to create, or enable the creation or redistribution of, |
| | 11 | * unlawful or unlicensed copies of an Apple operating system, or to |
| | 12 | * circumvent, violate, or enable the circumvention or violation of, any |
| | 13 | * terms of an Apple operating system software license agreement. |
| | 14 | * |
| | 15 | * Please obtain a copy of the License at |
| | 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. |
| | 17 | * |
| | 18 | * The Original Code and all software distributed under the License are |
| | 19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
| | 20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| | 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
| | 22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
| | 23 | * Please see the License for the specific language governing rights and |
| | 24 | * limitations under the License. |
| | 25 | * |
| | 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
| | 27 | */ |
| | 28 | /* |
| | 29 | * Copyright (c) 1982, 1986, 1993 |
| | 30 | * The Regents of the University of California. All rights reserved. |
| | 31 | * |
| | 32 | * Redistribution and use in source and binary forms, with or without |
| | 33 | * modification, are permitted provided that the following conditions |
| | 34 | * are met: |
| | 35 | * 1. Redistributions of source code must retain the above copyright |
| | 36 | * notice, this list of conditions and the following disclaimer. |
| | 37 | * 2. Redistributions in binary form must reproduce the above copyright |
| | 38 | * notice, this list of conditions and the following disclaimer in the |
| | 39 | * documentation and/or other materials provided with the distribution. |
| | 40 | * 3. All advertising materials mentioning features or use of this software |
| | 41 | * must display the following acknowledgement: |
| | 42 | * This product includes software developed by the University of |
| | 43 | * California, Berkeley and its contributors. |
| | 44 | * 4. Neither the name of the University nor the names of its contributors |
| | 45 | * may be used to endorse or promote products derived from this software |
| | 46 | * without specific prior written permission. |
| | 47 | * |
| | 48 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| | 49 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| | 50 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| | 51 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| | 52 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| | 53 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| | 54 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| | 55 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| | 56 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| | 57 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| | 58 | * SUCH DAMAGE. |
| | 59 | * |
| | 60 | * @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93 |
| | 61 | * $FreeBSD: src/sys/netinet/ip_icmp.h,v 1.16 1999/12/29 04:41:01 peter Exp $ |
| | 62 | */ |
| | 63 | |
| | 64 | #ifndef _NETINET_IP_ICMP_H_ |
| | 65 | #define _NETINET_IP_ICMP_H_ |
| | 66 | #include <sys/appleapiopts.h> |
| | 67 | |
| | 68 | /* |
| | 69 | * Interface Control Message Protocol Definitions. |
| | 70 | * Per RFC 792, September 1981. |
| | 71 | */ |
| | 72 | |
| | 73 | /* |
| | 74 | * Internal of an ICMP Router Advertisement |
| | 75 | */ |
| | 76 | struct icmp_ra_addr { |
| | 77 | u_int32_t ira_addr; |
| | 78 | u_int32_t ira_preference; |
| | 79 | }; |
| | 80 | |
| | 81 | /* |
| | 82 | * Structure of an icmp header. |
| | 83 | */ |
| | 84 | struct icmp { |
| | 85 | u_char icmp_type; /* type of message, see below */ |
| | 86 | u_char icmp_code; /* type sub code */ |
| | 87 | u_short icmp_cksum; /* ones complement cksum of struct */ |
| | 88 | union { |
| | 89 | u_char ih_pptr; /* ICMP_PARAMPROB */ |
| | 90 | struct in_addr ih_gwaddr; /* ICMP_REDIRECT */ |
| | 91 | struct ih_idseq { |
| | 92 | n_short icd_id; |
| | 93 | n_short icd_seq; |
| | 94 | } ih_idseq; |
| | 95 | int ih_void; |
| | 96 | |
| | 97 | /* ICMP_UNREACH_NEEDFRAG -- Path MTU Discovery (RFC1191) */ |
| | 98 | struct ih_pmtu { |
| | 99 | n_short ipm_void; |
| | 100 | n_short ipm_nextmtu; |
| | 101 | } ih_pmtu; |
| | 102 | |
| | 103 | struct ih_rtradv { |
| | 104 | u_char irt_num_addrs; |
| | 105 | u_char irt_wpa; |
| | 106 | u_int16_t irt_lifetime; |
| | 107 | } ih_rtradv; |
| | 108 | } icmp_hun; |
| | 109 | #define icmp_pptr icmp_hun.ih_pptr |
| | 110 | #define icmp_gwaddr icmp_hun.ih_gwaddr |
| | 111 | #define icmp_id icmp_hun.ih_idseq.icd_id |
| | 112 | #define icmp_seq icmp_hun.ih_idseq.icd_seq |
| | 113 | #define icmp_void icmp_hun.ih_void |
| | 114 | #define icmp_pmvoid icmp_hun.ih_pmtu.ipm_void |
| | 115 | #define icmp_nextmtu icmp_hun.ih_pmtu.ipm_nextmtu |
| | 116 | #define icmp_num_addrs icmp_hun.ih_rtradv.irt_num_addrs |
| | 117 | #define icmp_wpa icmp_hun.ih_rtradv.irt_wpa |
| | 118 | #define icmp_lifetime icmp_hun.ih_rtradv.irt_lifetime |
| | 119 | union { |
| | 120 | struct id_ts { |
| | 121 | n_time its_otime; |
| | 122 | n_time its_rtime; |
| | 123 | n_time its_ttime; |
| | 124 | } id_ts; |
| | 125 | struct id_ip { |
| | 126 | struct ip idi_ip; |
| | 127 | /* options and then 64 bits of data */ |
| | 128 | } id_ip; |
| | 129 | struct icmp_ra_addr id_radv; |
| | 130 | u_int32_t id_mask; |
| | 131 | char id_data[1]; |
| | 132 | } icmp_dun; |
| | 133 | #define icmp_otime icmp_dun.id_ts.its_otime |
| | 134 | #define icmp_rtime icmp_dun.id_ts.its_rtime |
| | 135 | #define icmp_ttime icmp_dun.id_ts.its_ttime |
| | 136 | #define icmp_ip icmp_dun.id_ip.idi_ip |
| | 137 | #define icmp_radv icmp_dun.id_radv |
| | 138 | #define icmp_mask icmp_dun.id_mask |
| | 139 | #define icmp_data icmp_dun.id_data |
| | 140 | }; |
| | 141 | |
| | 142 | /* |
| | 143 | * Lower bounds on packet lengths for various types. |
| | 144 | * For the error advice packets must first insure that the |
| | 145 | * packet is large enough to contain the returned ip header. |
| | 146 | * Only then can we do the check to see if 64 bits of packet |
| | 147 | * data have been returned, since we need to check the returned |
| | 148 | * ip header length. |
| | 149 | */ |
| | 150 | #define ICMP_MINLEN 8 /* abs minimum */ |
| | 151 | #define ICMP_TSLEN (8 + 3 * sizeof (n_time)) /* timestamp */ |
| | 152 | #define ICMP_MASKLEN 12 /* address mask */ |
| | 153 | #define ICMP_ADVLENMIN (8 + sizeof (struct ip) + 8) /* min */ |
| | 154 | #ifndef _IP_VHL |
| | 155 | #define ICMP_ADVLEN(p) (8 + ((p)->icmp_ip.ip_hl << 2) + 8) |
| | 156 | /* N.B.: must separately check that ip_hl >= 5 */ |
| | 157 | #else |
| | 158 | #define ICMP_ADVLEN(p) (8 + (IP_VHL_HL((p)->icmp_ip.ip_vhl) << 2) + 8) |
| | 159 | /* N.B.: must separately check that header length >= 5 */ |
| | 160 | #endif |
| | 161 | |
| | 162 | /* |
| | 163 | * Definition of type and code field values. |
| | 164 | */ |
| | 165 | #define ICMP_ECHOREPLY 0 /* echo reply */ |
| | 166 | #define ICMP_UNREACH 3 /* dest unreachable, codes: */ |
| | 167 | #define ICMP_UNREACH_NET 0 /* bad net */ |
| | 168 | #define ICMP_UNREACH_HOST 1 /* bad host */ |
| | 169 | #define ICMP_UNREACH_PROTOCOL 2 /* bad protocol */ |
| | 170 | #define ICMP_UNREACH_PORT 3 /* bad port */ |
| | 171 | #define ICMP_UNREACH_NEEDFRAG 4 /* IP_DF caused drop */ |
| | 172 | #define ICMP_UNREACH_SRCFAIL 5 /* src route failed */ |
| | 173 | #define ICMP_UNREACH_NET_UNKNOWN 6 /* unknown net */ |
| | 174 | #define ICMP_UNREACH_HOST_UNKNOWN 7 /* unknown host */ |
| | 175 | #define ICMP_UNREACH_ISOLATED 8 /* src host isolated */ |
| | 176 | #define ICMP_UNREACH_NET_PROHIB 9 /* prohibited access */ |
| | 177 | #define ICMP_UNREACH_HOST_PROHIB 10 /* ditto */ |
| | 178 | #define ICMP_UNREACH_TOSNET 11 /* bad tos for net */ |
| | 179 | #define ICMP_UNREACH_TOSHOST 12 /* bad tos for host */ |
| | 180 | #define ICMP_UNREACH_FILTER_PROHIB 13 /* admin prohib */ |
| | 181 | #define ICMP_UNREACH_HOST_PRECEDENCE 14 /* host prec vio. */ |
| | 182 | #define ICMP_UNREACH_PRECEDENCE_CUTOFF 15 /* prec cutoff */ |
| | 183 | #define ICMP_SOURCEQUENCH 4 /* packet lost, slow down */ |
| | 184 | #define ICMP_REDIRECT 5 /* shorter route, codes: */ |
| | 185 | #define ICMP_REDIRECT_NET 0 /* for network */ |
| | 186 | #define ICMP_REDIRECT_HOST 1 /* for host */ |
| | 187 | #define ICMP_REDIRECT_TOSNET 2 /* for tos and net */ |
| | 188 | #define ICMP_REDIRECT_TOSHOST 3 /* for tos and host */ |
| | 189 | #define ICMP_ALTHOSTADDR 6 /* alternate host address */ |
| | 190 | #define ICMP_ECHO 8 /* echo service */ |
| | 191 | #define ICMP_ROUTERADVERT 9 /* router advertisement */ |
| | 192 | #define ICMP_ROUTERADVERT_NORMAL 0 /* normal advertisement */ |
| | 193 | #define ICMP_ROUTERADVERT_NOROUTE_COMMON 16 /* selective routing */ |
| | 194 | #define ICMP_ROUTERSOLICIT 10 /* router solicitation */ |
| | 195 | #define ICMP_TIMXCEED 11 /* time exceeded, code: */ |
| | 196 | #define ICMP_TIMXCEED_INTRANS 0 /* ttl==0 in transit */ |
| | 197 | #define ICMP_TIMXCEED_REASS 1 /* ttl==0 in reass */ |
| | 198 | #define ICMP_PARAMPROB 12 /* ip header bad */ |
| | 199 | #define ICMP_PARAMPROB_ERRATPTR 0 /* error at param ptr */ |
| | 200 | #define ICMP_PARAMPROB_OPTABSENT 1 /* req. opt. absent */ |
| | 201 | #define ICMP_PARAMPROB_LENGTH 2 /* bad length */ |
| | 202 | #define ICMP_TSTAMP 13 /* timestamp request */ |
| | 203 | #define ICMP_TSTAMPREPLY 14 /* timestamp reply */ |
| | 204 | #define ICMP_IREQ 15 /* information request */ |
| | 205 | #define ICMP_IREQREPLY 16 /* information reply */ |
| | 206 | #define ICMP_MASKREQ 17 /* address mask request */ |
| | 207 | #define ICMP_MASKREPLY 18 /* address mask reply */ |
| | 208 | #define ICMP_TRACEROUTE 30 /* traceroute */ |
| | 209 | #define ICMP_DATACONVERR 31 /* data conversion error */ |
| | 210 | #define ICMP_MOBILE_REDIRECT 32 /* mobile host redirect */ |
| | 211 | #define ICMP_IPV6_WHEREAREYOU 33 /* IPv6 where-are-you */ |
| | 212 | #define ICMP_IPV6_IAMHERE 34 /* IPv6 i-am-here */ |
| | 213 | #define ICMP_MOBILE_REGREQUEST 35 /* mobile registration req */ |
| | 214 | #define ICMP_MOBILE_REGREPLY 36 /* mobile registration reply */ |
| | 215 | #define ICMP_SKIP 39 /* SKIP */ |
| | 216 | #define ICMP_PHOTURIS 40 /* Photuris */ |
| | 217 | #define ICMP_PHOTURIS_UNKNOWN_INDEX 1 /* unknown sec index */ |
| | 218 | #define ICMP_PHOTURIS_AUTH_FAILED 2 /* auth failed */ |
| | 219 | #define ICMP_PHOTURIS_DECRYPT_FAILED 3 /* decrypt failed */ |
| | 220 | |
| | 221 | #define ICMP_MAXTYPE 40 |
| | 222 | |
| | 223 | #define ICMP_INFOTYPE(type) \ |
| | 224 | ((type) == ICMP_ECHOREPLY || (type) == ICMP_ECHO || \ |
| | 225 | (type) == ICMP_ROUTERADVERT || (type) == ICMP_ROUTERSOLICIT || \ |
| | 226 | (type) == ICMP_TSTAMP || (type) == ICMP_TSTAMPREPLY || \ |
| | 227 | (type) == ICMP_IREQ || (type) == ICMP_IREQREPLY || \ |
| | 228 | (type) == ICMP_MASKREQ || (type) == ICMP_MASKREPLY) |
| | 229 | |
| | 230 | #define ICMP_ERRORTYPE(type) \ |
| | 231 | ((type) == ICMP_UNREACH || (type) == ICMP_SOURCEQUENCH || \ |
| | 232 | (type) == ICMP_REDIRECT || (type) == ICMP_TIMXCEED || \ |
| | 233 | (type) == ICMP_PARAMPROB) |
| | 234 | |
| | 235 | #ifdef BSD_KERNEL_PRIVATE |
| | 236 | void icmp_error(struct mbuf *, int, int, n_long, u_int32_t); |
| | 237 | void icmp_input(struct mbuf *, int); |
| | 238 | int ip_next_mtu(int, int); |
| | 239 | #endif /* BSD_KERNEL_PRIVATE */ |
| | 240 | #endif /* _NETINET_IP_ICMP_H_ */ |
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