1/* 2 * Copyright (c) 2008 Apple Computer, 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 */ 76struct 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 */ 84struct 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#ifdef KERNEL_PRIVATE 231void icmp_error(struct mbuf *, int, int, n_long, u_int32_t); 232void icmp_input(struct mbuf *, int); 233int ip_next_mtu(int, int); 234#endif /* KERNEL_PRIVATE */ 235 236#endif 237