minix/lib/liblwip/dist/src/include/lwip/prot/icmp6.h

   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 /** This is the ICMP6 header adapted for echo req/resp. */
 150 #ifdef PACK_STRUCT_USE_INCLUDES
 151 #  include "arch/bpstruct.h"
 152 #endif
 153 PACK_STRUCT_BEGIN
 154 struct icmp6_echo_hdr {
 155   PACK_STRUCT_FLD_8(u8_t type);
 156   PACK_STRUCT_FLD_8(u8_t code);
 157   PACK_STRUCT_FIELD(u16_t chksum);
 158   PACK_STRUCT_FIELD(u16_t id);
 159   PACK_STRUCT_FIELD(u16_t seqno);
 160 } PACK_STRUCT_STRUCT;
 161 PACK_STRUCT_END
 162 #ifdef PACK_STRUCT_USE_INCLUDES
 163 #  include "arch/epstruct.h"
 164 #endif
 165
 166 #ifdef __cplusplus
 167 }
 168 #endif
 169
 170 #endif /* LWIP_HDR_PROT_ICMP6_H */