minix/lib/liblwip/dist/src/include/lwip/prot/nd6.h

   1 /**
   2  * @file
   3  * ND6 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_ND6_H
  38 #define LWIP_HDR_PROT_ND6_H
  39
  40 #include "lwip/arch.h"
  41 #include "lwip/ip6_addr.h"
  42 #include "lwip/prot/ip6.h"
  43
  44 #ifdef __cplusplus
  45 extern "C" {
  46 #endif
  47
  48 /** Neighbor solicitation message header. */
  49 #ifdef PACK_STRUCT_USE_INCLUDES
  50 #  include "arch/bpstruct.h"
  51 #endif
  52 PACK_STRUCT_BEGIN
  53 struct ns_header {
  54   PACK_STRUCT_FLD_8(u8_t type);
  55   PACK_STRUCT_FLD_8(u8_t code);
  56   PACK_STRUCT_FIELD(u16_t chksum);
  57   PACK_STRUCT_FIELD(u32_t reserved);
  58   PACK_STRUCT_FLD_S(ip6_addr_p_t target_address);
  59   /* Options follow. */
  60 } PACK_STRUCT_STRUCT;
  61 PACK_STRUCT_END
  62 #ifdef PACK_STRUCT_USE_INCLUDES
  63 #  include "arch/epstruct.h"
  64 #endif
  65
  66 /** Neighbor advertisement message header. */
  67 #ifdef PACK_STRUCT_USE_INCLUDES
  68 #  include "arch/bpstruct.h"
  69 #endif
  70 PACK_STRUCT_BEGIN
  71 struct na_header {
  72   PACK_STRUCT_FLD_8(u8_t type);
  73   PACK_STRUCT_FLD_8(u8_t code);
  74   PACK_STRUCT_FIELD(u16_t chksum);
  75   PACK_STRUCT_FLD_8(u8_t flags);
  76   PACK_STRUCT_FLD_8(u8_t reserved[3]);
  77   PACK_STRUCT_FLD_S(ip6_addr_p_t target_address);
  78   /* Options follow. */
  79 } PACK_STRUCT_STRUCT;
  80 PACK_STRUCT_END
  81 #ifdef PACK_STRUCT_USE_INCLUDES
  82 #  include "arch/epstruct.h"
  83 #endif
  84 #define ND6_FLAG_ROUTER      (0x80)
  85 #define ND6_FLAG_SOLICITED   (0x40)
  86 #define ND6_FLAG_OVERRIDE    (0x20)
  87
  88 /** Router solicitation message header. */
  89 #ifdef PACK_STRUCT_USE_INCLUDES
  90 #  include "arch/bpstruct.h"
  91 #endif
  92 PACK_STRUCT_BEGIN
  93 struct rs_header {
  94   PACK_STRUCT_FLD_8(u8_t type);
  95   PACK_STRUCT_FLD_8(u8_t code);
  96   PACK_STRUCT_FIELD(u16_t chksum);
  97   PACK_STRUCT_FIELD(u32_t reserved);
  98   /* Options follow. */
  99 } PACK_STRUCT_STRUCT;
 100 PACK_STRUCT_END
 101 #ifdef PACK_STRUCT_USE_INCLUDES
 102 #  include "arch/epstruct.h"
 103 #endif
 104
 105 /** Router advertisement message header. */
 106 #define ND6_RA_FLAG_MANAGED_ADDR_CONFIG (0x80)
 107 #define ND6_RA_FLAG_OTHER_CONFIG (0x40)
 108 #define ND6_RA_FLAG_HOME_AGENT (0x20)
 109 #define ND6_RA_PREFERENCE_MASK (0x18)
 110 #define ND6_RA_PREFERENCE_HIGH (0x08)
 111 #define ND6_RA_PREFERENCE_MEDIUM (0x00)
 112 #define ND6_RA_PREFERENCE_LOW (0x18)
 113 #define ND6_RA_PREFERENCE_DISABLED (0x10)
 114 #ifdef PACK_STRUCT_USE_INCLUDES
 115 #  include "arch/bpstruct.h"
 116 #endif
 117 PACK_STRUCT_BEGIN
 118 struct ra_header {
 119   PACK_STRUCT_FLD_8(u8_t type);
 120   PACK_STRUCT_FLD_8(u8_t code);
 121   PACK_STRUCT_FIELD(u16_t chksum);
 122   PACK_STRUCT_FLD_8(u8_t current_hop_limit);
 123   PACK_STRUCT_FLD_8(u8_t flags);
 124   PACK_STRUCT_FIELD(u16_t router_lifetime);
 125   PACK_STRUCT_FIELD(u32_t reachable_time);
 126   PACK_STRUCT_FIELD(u32_t retrans_timer);
 127   /* Options follow. */
 128 } PACK_STRUCT_STRUCT;
 129 PACK_STRUCT_END
 130 #ifdef PACK_STRUCT_USE_INCLUDES
 131 #  include "arch/epstruct.h"
 132 #endif
 133
 134 /** Redirect message header. */
 135 #ifdef PACK_STRUCT_USE_INCLUDES
 136 #  include "arch/bpstruct.h"
 137 #endif
 138 PACK_STRUCT_BEGIN
 139 struct redirect_header {
 140   PACK_STRUCT_FLD_8(u8_t type);
 141   PACK_STRUCT_FLD_8(u8_t code);
 142   PACK_STRUCT_FIELD(u16_t chksum);
 143   PACK_STRUCT_FIELD(u32_t reserved);
 144   PACK_STRUCT_FLD_S(ip6_addr_p_t target_address);
 145   PACK_STRUCT_FLD_S(ip6_addr_p_t destination_address);
 146   /* Options follow. */
 147 } PACK_STRUCT_STRUCT;
 148 PACK_STRUCT_END
 149 #ifdef PACK_STRUCT_USE_INCLUDES
 150 #  include "arch/epstruct.h"
 151 #endif
 152
 153 /** Link-layer address option. */
 154 #define ND6_OPTION_TYPE_SOURCE_LLADDR (0x01)
 155 #define ND6_OPTION_TYPE_TARGET_LLADDR (0x02)
 156 #ifdef PACK_STRUCT_USE_INCLUDES
 157 #  include "arch/bpstruct.h"
 158 #endif
 159 PACK_STRUCT_BEGIN
 160 struct lladdr_option {
 161   PACK_STRUCT_FLD_8(u8_t type);
 162   PACK_STRUCT_FLD_8(u8_t length);
 163   PACK_STRUCT_FLD_8(u8_t addr[NETIF_MAX_HWADDR_LEN]);
 164 } PACK_STRUCT_STRUCT;
 165 PACK_STRUCT_END
 166 #ifdef PACK_STRUCT_USE_INCLUDES
 167 #  include "arch/epstruct.h"
 168 #endif
 169
 170 /** Prefix information option. */
 171 #define ND6_OPTION_TYPE_PREFIX_INFO (0x03)
 172 #define ND6_PREFIX_FLAG_ON_LINK (0x80)
 173 #define ND6_PREFIX_FLAG_AUTONOMOUS (0x40)
 174 #define ND6_PREFIX_FLAG_ROUTER_ADDRESS (0x20)
 175 #define ND6_PREFIX_FLAG_SITE_PREFIX (0x10)
 176 #ifdef PACK_STRUCT_USE_INCLUDES
 177 #  include "arch/bpstruct.h"
 178 #endif
 179 PACK_STRUCT_BEGIN
 180 struct prefix_option {
 181   PACK_STRUCT_FLD_8(u8_t type);
 182   PACK_STRUCT_FLD_8(u8_t length);
 183   PACK_STRUCT_FLD_8(u8_t prefix_length);
 184   PACK_STRUCT_FLD_8(u8_t flags);
 185   PACK_STRUCT_FIELD(u32_t valid_lifetime);
 186   PACK_STRUCT_FIELD(u32_t preferred_lifetime);
 187   PACK_STRUCT_FLD_8(u8_t reserved2[3]);
 188   PACK_STRUCT_FLD_8(u8_t site_prefix_length);
 189   PACK_STRUCT_FLD_S(ip6_addr_p_t prefix);
 190 } PACK_STRUCT_STRUCT;
 191 PACK_STRUCT_END
 192 #ifdef PACK_STRUCT_USE_INCLUDES
 193 #  include "arch/epstruct.h"
 194 #endif
 195
 196 /** Redirected header option. */
 197 #define ND6_OPTION_TYPE_REDIR_HDR (0x04)
 198 #ifdef PACK_STRUCT_USE_INCLUDES
 199 #  include "arch/bpstruct.h"
 200 #endif
 201 PACK_STRUCT_BEGIN
 202 struct redirected_header_option {
 203   PACK_STRUCT_FLD_8(u8_t type);
 204   PACK_STRUCT_FLD_8(u8_t length);
 205   PACK_STRUCT_FLD_8(u8_t reserved[6]);
 206   /* Portion of redirected packet follows. */
 207   /* PACK_STRUCT_FLD_8(u8_t redirected[8]); */
 208 } PACK_STRUCT_STRUCT;
 209 PACK_STRUCT_END
 210 #ifdef PACK_STRUCT_USE_INCLUDES
 211 #  include "arch/epstruct.h"
 212 #endif
 213
 214 /** MTU option. */
 215 #define ND6_OPTION_TYPE_MTU (0x05)
 216 #ifdef PACK_STRUCT_USE_INCLUDES
 217 #  include "arch/bpstruct.h"
 218 #endif
 219 PACK_STRUCT_BEGIN
 220 struct mtu_option {
 221   PACK_STRUCT_FLD_8(u8_t type);
 222   PACK_STRUCT_FLD_8(u8_t length);
 223   PACK_STRUCT_FIELD(u16_t reserved);
 224   PACK_STRUCT_FIELD(u32_t mtu);
 225 } PACK_STRUCT_STRUCT;
 226 PACK_STRUCT_END
 227 #ifdef PACK_STRUCT_USE_INCLUDES
 228 #  include "arch/epstruct.h"
 229 #endif
 230
 231 /** Route information option. */
 232 #define ND6_OPTION_TYPE_ROUTE_INFO (24)
 233 #ifdef PACK_STRUCT_USE_INCLUDES
 234 #  include "arch/bpstruct.h"
 235 #endif
 236 PACK_STRUCT_BEGIN
 237 struct route_option {
 238   PACK_STRUCT_FLD_8(u8_t type);
 239   PACK_STRUCT_FLD_8(u8_t length);
 240   PACK_STRUCT_FLD_8(u8_t prefix_length);
 241   PACK_STRUCT_FLD_8(u8_t preference);
 242   PACK_STRUCT_FIELD(u32_t route_lifetime);
 243   PACK_STRUCT_FLD_S(ip6_addr_p_t prefix);
 244 } PACK_STRUCT_STRUCT;
 245 PACK_STRUCT_END
 246 #ifdef PACK_STRUCT_USE_INCLUDES
 247 #  include "arch/epstruct.h"
 248 #endif
 249
 250 /** Recursive DNS Server Option. */
 251 #define ND6_OPTION_TYPE_RDNSS (25)
 252 #ifdef PACK_STRUCT_USE_INCLUDES
 253 #  include "arch/bpstruct.h"
 254 #endif
 255 PACK_STRUCT_BEGIN
 256 struct rdnss_option {
 257   PACK_STRUCT_FLD_8(u8_t type);
 258   PACK_STRUCT_FLD_8(u8_t length);
 259   PACK_STRUCT_FIELD(u16_t reserved);
 260   PACK_STRUCT_FIELD(u32_t lifetime);
 261   PACK_STRUCT_FLD_S(ip6_addr_p_t rdnss_address[1]);
 262 } PACK_STRUCT_STRUCT;
 263 PACK_STRUCT_END
 264 #ifdef PACK_STRUCT_USE_INCLUDES
 265 #  include "arch/epstruct.h"
 266 #endif
 267
 268 #define SIZEOF_RDNSS_OPTION_BASE 8 /* size without addresses */
 269
 270 #ifdef __cplusplus
 271 }
 272 #endif
 273
 274 #endif /* LWIP_HDR_PROT_ND6_H */