nd6.h

00001 /**
00002  * @file
00003  * ND6 protocol definitions
00004  */
00005 
00006 /*
00007  * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
00008  * All rights reserved.
00009  *
00010  * Redistribution and use in source and binary forms, with or without modification,
00011  * are permitted provided that the following conditions are met:
00012  *
00013  * 1. Redistributions of source code must retain the above copyright notice,
00014  *    this list of conditions and the following disclaimer.
00015  * 2. Redistributions in binary form must reproduce the above copyright notice,
00016  *    this list of conditions and the following disclaimer in the documentation
00017  *    and/or other materials provided with the distribution.
00018  * 3. The name of the author may not be used to endorse or promote products
00019  *    derived from this software without specific prior written permission.
00020  *
00021  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
00022  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
00023  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
00024  * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
00025  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
00026  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
00027  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
00028  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
00029  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
00030  * OF SUCH DAMAGE.
00031  *
00032  * This file is part of the lwIP TCP/IP stack.
00033  *
00034  * Author: Adam Dunkels <adam@sics.se>
00035  *
00036  */
00037 #ifndef LWIP_HDR_PROT_ND6_H
00038 #define LWIP_HDR_PROT_ND6_H
00039 
00040 #include "lwip/arch.h"
00041 #include "lwip/ip6_addr.h"
00042 #include "lwip/prot/ip6.h"
00043 
00044 #ifdef __cplusplus
00045 extern "C" {
00046 #endif
00047 
00048 /** Neighbor solicitation message header. */
00049 #ifdef PACK_STRUCT_USE_INCLUDES
00050 #  include "arch/bpstruct.h"
00051 #endif
00052 PACK_STRUCT_BEGIN
00053 struct ns_header {
00054   PACK_STRUCT_FLD_8(u8_t type);
00055   PACK_STRUCT_FLD_8(u8_t code);
00056   PACK_STRUCT_FIELD(u16_t chksum);
00057   PACK_STRUCT_FIELD(u32_t reserved);
00058   PACK_STRUCT_FLD_S(ip6_addr_p_t target_address);
00059   /* Options follow. */
00060 } PACK_STRUCT_STRUCT;
00061 PACK_STRUCT_END
00062 #ifdef PACK_STRUCT_USE_INCLUDES
00063 #  include "arch/epstruct.h"
00064 #endif
00065 
00066 /** Neighbor advertisement message header. */
00067 #ifdef PACK_STRUCT_USE_INCLUDES
00068 #  include "arch/bpstruct.h"
00069 #endif
00070 PACK_STRUCT_BEGIN
00071 struct na_header {
00072   PACK_STRUCT_FLD_8(u8_t type);
00073   PACK_STRUCT_FLD_8(u8_t code);
00074   PACK_STRUCT_FIELD(u16_t chksum);
00075   PACK_STRUCT_FLD_8(u8_t flags);
00076   PACK_STRUCT_FLD_8(u8_t reserved[3]);
00077   PACK_STRUCT_FLD_S(ip6_addr_p_t target_address);
00078   /* Options follow. */
00079 } PACK_STRUCT_STRUCT;
00080 PACK_STRUCT_END
00081 #ifdef PACK_STRUCT_USE_INCLUDES
00082 #  include "arch/epstruct.h"
00083 #endif
00084 #define ND6_FLAG_ROUTER      (0x80)
00085 #define ND6_FLAG_SOLICITED   (0x40)
00086 #define ND6_FLAG_OVERRIDE    (0x20)
00087 
00088 /** Router solicitation message header. */
00089 #ifdef PACK_STRUCT_USE_INCLUDES
00090 #  include "arch/bpstruct.h"
00091 #endif
00092 PACK_STRUCT_BEGIN
00093 struct rs_header {
00094   PACK_STRUCT_FLD_8(u8_t type);
00095   PACK_STRUCT_FLD_8(u8_t code);
00096   PACK_STRUCT_FIELD(u16_t chksum);
00097   PACK_STRUCT_FIELD(u32_t reserved);
00098   /* Options follow. */
00099 } PACK_STRUCT_STRUCT;
00100 PACK_STRUCT_END
00101 #ifdef PACK_STRUCT_USE_INCLUDES
00102 #  include "arch/epstruct.h"
00103 #endif
00104 
00105 /** Router advertisement message header. */
00106 #define ND6_RA_FLAG_MANAGED_ADDR_CONFIG (0x80)
00107 #define ND6_RA_FLAG_OTHER_CONFIG (0x40)
00108 #define ND6_RA_FLAG_HOME_AGENT (0x20)
00109 #define ND6_RA_PREFERENCE_MASK (0x18)
00110 #define ND6_RA_PREFERENCE_HIGH (0x08)
00111 #define ND6_RA_PREFERENCE_MEDIUM (0x00)
00112 #define ND6_RA_PREFERENCE_LOW (0x18)
00113 #define ND6_RA_PREFERENCE_DISABLED (0x10)
00114 #ifdef PACK_STRUCT_USE_INCLUDES
00115 #  include "arch/bpstruct.h"
00116 #endif
00117 PACK_STRUCT_BEGIN
00118 struct ra_header {
00119   PACK_STRUCT_FLD_8(u8_t type);
00120   PACK_STRUCT_FLD_8(u8_t code);
00121   PACK_STRUCT_FIELD(u16_t chksum);
00122   PACK_STRUCT_FLD_8(u8_t current_hop_limit);
00123   PACK_STRUCT_FLD_8(u8_t flags);
00124   PACK_STRUCT_FIELD(u16_t router_lifetime);
00125   PACK_STRUCT_FIELD(u32_t reachable_time);
00126   PACK_STRUCT_FIELD(u32_t retrans_timer);
00127   /* Options follow. */
00128 } PACK_STRUCT_STRUCT;
00129 PACK_STRUCT_END
00130 #ifdef PACK_STRUCT_USE_INCLUDES
00131 #  include "arch/epstruct.h"
00132 #endif
00133 
00134 /** Redirect message header. */
00135 #ifdef PACK_STRUCT_USE_INCLUDES
00136 #  include "arch/bpstruct.h"
00137 #endif
00138 PACK_STRUCT_BEGIN
00139 struct redirect_header {
00140   PACK_STRUCT_FLD_8(u8_t type);
00141   PACK_STRUCT_FLD_8(u8_t code);
00142   PACK_STRUCT_FIELD(u16_t chksum);
00143   PACK_STRUCT_FIELD(u32_t reserved);
00144   PACK_STRUCT_FLD_S(ip6_addr_p_t target_address);
00145   PACK_STRUCT_FLD_S(ip6_addr_p_t destination_address);
00146   /* Options follow. */
00147 } PACK_STRUCT_STRUCT;
00148 PACK_STRUCT_END
00149 #ifdef PACK_STRUCT_USE_INCLUDES
00150 #  include "arch/epstruct.h"
00151 #endif
00152 
00153 /** Link-layer address option. */
00154 #define ND6_OPTION_TYPE_SOURCE_LLADDR (0x01)
00155 #define ND6_OPTION_TYPE_TARGET_LLADDR (0x02)
00156 #ifdef PACK_STRUCT_USE_INCLUDES
00157 #  include "arch/bpstruct.h"
00158 #endif
00159 PACK_STRUCT_BEGIN
00160 struct lladdr_option {
00161   PACK_STRUCT_FLD_8(u8_t type);
00162   PACK_STRUCT_FLD_8(u8_t length);
00163   PACK_STRUCT_FLD_8(u8_t addr[NETIF_MAX_HWADDR_LEN]);
00164 } PACK_STRUCT_STRUCT;
00165 PACK_STRUCT_END
00166 #ifdef PACK_STRUCT_USE_INCLUDES
00167 #  include "arch/epstruct.h"
00168 #endif
00169 
00170 /** Prefix information option. */
00171 #define ND6_OPTION_TYPE_PREFIX_INFO (0x03)
00172 #define ND6_PREFIX_FLAG_ON_LINK (0x80)
00173 #define ND6_PREFIX_FLAG_AUTONOMOUS (0x40)
00174 #define ND6_PREFIX_FLAG_ROUTER_ADDRESS (0x20)
00175 #define ND6_PREFIX_FLAG_SITE_PREFIX (0x10)
00176 #ifdef PACK_STRUCT_USE_INCLUDES
00177 #  include "arch/bpstruct.h"
00178 #endif
00179 PACK_STRUCT_BEGIN
00180 struct prefix_option {
00181   PACK_STRUCT_FLD_8(u8_t type);
00182   PACK_STRUCT_FLD_8(u8_t length);
00183   PACK_STRUCT_FLD_8(u8_t prefix_length);
00184   PACK_STRUCT_FLD_8(u8_t flags);
00185   PACK_STRUCT_FIELD(u32_t valid_lifetime);
00186   PACK_STRUCT_FIELD(u32_t preferred_lifetime);
00187   PACK_STRUCT_FLD_8(u8_t reserved2[3]);
00188   PACK_STRUCT_FLD_8(u8_t site_prefix_length);
00189   PACK_STRUCT_FLD_S(ip6_addr_p_t prefix);
00190 } PACK_STRUCT_STRUCT;
00191 PACK_STRUCT_END
00192 #ifdef PACK_STRUCT_USE_INCLUDES
00193 #  include "arch/epstruct.h"
00194 #endif
00195 
00196 /** Redirected header option. */
00197 #define ND6_OPTION_TYPE_REDIR_HDR (0x04)
00198 #ifdef PACK_STRUCT_USE_INCLUDES
00199 #  include "arch/bpstruct.h"
00200 #endif
00201 PACK_STRUCT_BEGIN
00202 struct redirected_header_option {
00203   PACK_STRUCT_FLD_8(u8_t type);
00204   PACK_STRUCT_FLD_8(u8_t length);
00205   PACK_STRUCT_FLD_8(u8_t reserved[6]);
00206   /* Portion of redirected packet follows. */
00207   /* PACK_STRUCT_FLD_8(u8_t redirected[8]); */
00208 } PACK_STRUCT_STRUCT;
00209 PACK_STRUCT_END
00210 #ifdef PACK_STRUCT_USE_INCLUDES
00211 #  include "arch/epstruct.h"
00212 #endif
00213 
00214 /** MTU option. */
00215 #define ND6_OPTION_TYPE_MTU (0x05)
00216 #ifdef PACK_STRUCT_USE_INCLUDES
00217 #  include "arch/bpstruct.h"
00218 #endif
00219 PACK_STRUCT_BEGIN
00220 struct mtu_option {
00221   PACK_STRUCT_FLD_8(u8_t type);
00222   PACK_STRUCT_FLD_8(u8_t length);
00223   PACK_STRUCT_FIELD(u16_t reserved);
00224   PACK_STRUCT_FIELD(u32_t mtu);
00225 } PACK_STRUCT_STRUCT;
00226 PACK_STRUCT_END
00227 #ifdef PACK_STRUCT_USE_INCLUDES
00228 #  include "arch/epstruct.h"
00229 #endif
00230 
00231 /** Route information option. */
00232 #define ND6_OPTION_TYPE_ROUTE_INFO (24)
00233 #ifdef PACK_STRUCT_USE_INCLUDES
00234 #  include "arch/bpstruct.h"
00235 #endif
00236 PACK_STRUCT_BEGIN
00237 struct route_option {
00238   PACK_STRUCT_FLD_8(u8_t type);
00239   PACK_STRUCT_FLD_8(u8_t length);
00240   PACK_STRUCT_FLD_8(u8_t prefix_length);
00241   PACK_STRUCT_FLD_8(u8_t preference);
00242   PACK_STRUCT_FIELD(u32_t route_lifetime);
00243   PACK_STRUCT_FLD_S(ip6_addr_p_t prefix);
00244 } PACK_STRUCT_STRUCT;
00245 PACK_STRUCT_END
00246 #ifdef PACK_STRUCT_USE_INCLUDES
00247 #  include "arch/epstruct.h"
00248 #endif
00249 
00250 /** Recursive DNS Server Option. */
00251 #if LWIP_ND6_RDNSS_MAX_DNS_SERVERS
00252 #define LWIP_RDNSS_OPTION_MAX_SERVERS LWIP_ND6_RDNSS_MAX_DNS_SERVERS
00253 #else
00254 #define LWIP_RDNSS_OPTION_MAX_SERVERS 1
00255 #endif
00256 #define ND6_OPTION_TYPE_RDNSS (25)
00257 #ifdef PACK_STRUCT_USE_INCLUDES
00258 #  include "arch/bpstruct.h"
00259 #endif
00260 PACK_STRUCT_BEGIN
00261 struct rdnss_option {
00262   PACK_STRUCT_FLD_8(u8_t type);
00263   PACK_STRUCT_FLD_8(u8_t length);
00264   PACK_STRUCT_FIELD(u16_t reserved);
00265   PACK_STRUCT_FIELD(u32_t lifetime);
00266   PACK_STRUCT_FLD_S(ip6_addr_p_t rdnss_address[LWIP_RDNSS_OPTION_MAX_SERVERS]);
00267 } PACK_STRUCT_STRUCT;
00268 PACK_STRUCT_END
00269 #ifdef PACK_STRUCT_USE_INCLUDES
00270 #  include "arch/epstruct.h"
00271 #endif
00272 
00273 #ifdef __cplusplus
00274 }
00275 #endif
00276 
00277 #endif /* LWIP_HDR_PROT_ND6_H */