1 /** 2 * @file 3 * ICMP6 protocol definitions 4 */ 5 6 /* 7 * Copyright (c) 2001-2004 Swedish Institute of Computer Science. 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without modification, 11 * are permitted provided that the following conditions are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright notice, 14 * this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright notice, 16 * this list of conditions and the following disclaimer in the documentation 17 * and/or other materials provided with the distribution. 18 * 3. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 22 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 23 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 24 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 26 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 29 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 30 * OF SUCH DAMAGE. 31 * 32 * This file is part of the lwIP TCP/IP stack. 33 * 34 * Author: Adam Dunkels <adam@sics.se> 35 * 36 */ 37 #ifndef LWIP_HDR_PROT_ICMP6_H 38 #define LWIP_HDR_PROT_ICMP6_H 39 40 #include "lwip/arch.h" 41 42 #ifdef __cplusplus 43 extern "C" { 44 #endif 45 46 /** ICMP type */ 47 enum icmp6_type { 48 /** Destination unreachable */ 49 ICMP6_TYPE_DUR = 1, 50 /** Packet too big */ 51 ICMP6_TYPE_PTB = 2, 52 /** Time exceeded */ 53 ICMP6_TYPE_TE = 3, 54 /** Parameter problem */ 55 ICMP6_TYPE_PP = 4, 56 /** Private experimentation */ 57 ICMP6_TYPE_PE1 = 100, 58 /** Private experimentation */ 59 ICMP6_TYPE_PE2 = 101, 60 /** Reserved for expansion of error messages */ 61 ICMP6_TYPE_RSV_ERR = 127, 62 63 /** Echo request */ 64 ICMP6_TYPE_EREQ = 128, 65 /** Echo reply */ 66 ICMP6_TYPE_EREP = 129, 67 /** Multicast listener query */ 68 ICMP6_TYPE_MLQ = 130, 69 /** Multicast listener report */ 70 ICMP6_TYPE_MLR = 131, 71 /** Multicast listener done */ 72 ICMP6_TYPE_MLD = 132, 73 /** Router solicitation */ 74 ICMP6_TYPE_RS = 133, 75 /** Router advertisement */ 76 ICMP6_TYPE_RA = 134, 77 /** Neighbor solicitation */ 78 ICMP6_TYPE_NS = 135, 79 /** Neighbor advertisement */ 80 ICMP6_TYPE_NA = 136, 81 /** Redirect */ 82 ICMP6_TYPE_RD = 137, 83 /** Multicast router advertisement */ 84 ICMP6_TYPE_MRA = 151, 85 /** Multicast router solicitation */ 86 ICMP6_TYPE_MRS = 152, 87 /** Multicast router termination */ 88 ICMP6_TYPE_MRT = 153, 89 /** Private experimentation */ 90 ICMP6_TYPE_PE3 = 200, 91 /** Private experimentation */ 92 ICMP6_TYPE_PE4 = 201, 93 /** Reserved for expansion of informational messages */ 94 ICMP6_TYPE_RSV_INF = 255 95 }; 96 97 /** ICMP destination unreachable codes */ 98 enum icmp6_dur_code { 99 /** No route to destination */ 100 ICMP6_DUR_NO_ROUTE = 0, 101 /** Communication with destination administratively prohibited */ 102 ICMP6_DUR_PROHIBITED = 1, 103 /** Beyond scope of source address */ 104 ICMP6_DUR_SCOPE = 2, 105 /** Address unreachable */ 106 ICMP6_DUR_ADDRESS = 3, 107 /** Port unreachable */ 108 ICMP6_DUR_PORT = 4, 109 /** Source address failed ingress/egress policy */ 110 ICMP6_DUR_POLICY = 5, 111 /** Reject route to destination */ 112 ICMP6_DUR_REJECT_ROUTE = 6 113 }; 114 115 /** ICMP time exceeded codes */ 116 enum icmp6_te_code { 117 /** Hop limit exceeded in transit */ 118 ICMP6_TE_HL = 0, 119 /** Fragment reassembly time exceeded */ 120 ICMP6_TE_FRAG = 1 121 }; 122 123 /** ICMP parameter code */ 124 enum icmp6_pp_code { 125 /** Erroneous header field encountered */ 126 ICMP6_PP_FIELD = 0, 127 /** Unrecognized next header type encountered */ 128 ICMP6_PP_HEADER = 1, 129 /** Unrecognized IPv6 option encountered */ 130 ICMP6_PP_OPTION = 2 131 }; 132 133 /** This is the standard ICMP6 header. */ 134 #ifdef PACK_STRUCT_USE_INCLUDES 135 # include "arch/bpstruct.h" 136 #endif 137 PACK_STRUCT_BEGIN 138 struct icmp6_hdr { 139 PACK_STRUCT_FLD_8(u8_t type); 140 PACK_STRUCT_FLD_8(u8_t code); 141 PACK_STRUCT_FIELD(u16_t chksum); 142 PACK_STRUCT_FIELD(u32_t data); 143 } PACK_STRUCT_STRUCT; 144 PACK_STRUCT_END 145 #ifdef PACK_STRUCT_USE_INCLUDES 146 # include "arch/epstruct.h" 147 #endif 148 149 #define ICMP6_HLEN 8 150 151 /** This is the ICMP6 header adapted for echo req/resp. */ 152 #ifdef PACK_STRUCT_USE_INCLUDES 153 # include "arch/bpstruct.h" 154 #endif 155 PACK_STRUCT_BEGIN 156 struct icmp6_echo_hdr { 157 PACK_STRUCT_FLD_8(u8_t type); 158 PACK_STRUCT_FLD_8(u8_t code); 159 PACK_STRUCT_FIELD(u16_t chksum); 160 PACK_STRUCT_FIELD(u16_t id); 161 PACK_STRUCT_FIELD(u16_t seqno); 162 } PACK_STRUCT_STRUCT; 163 PACK_STRUCT_END 164 #ifdef PACK_STRUCT_USE_INCLUDES 165 # include "arch/epstruct.h" 166 #endif 167 168 #ifdef __cplusplus 169 } 170 #endif 171 172 #endif /* LWIP_HDR_PROT_ICMP6_H */ 173