1 /* Copyright (C) 1991,92,93,94,95,96,97,2000 Free Software Foundation, Inc. 2 This file is part of the GNU C Library. 3 4 The GNU C Library is free software; you can redistribute it and/or 5 modify it under the terms of the GNU Lesser General Public 6 License as published by the Free Software Foundation; either 7 version 2.1 of the License, or (at your option) any later version. 8 9 The GNU C Library is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public 15 License along with the GNU C Library; if not, write to the Free 16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 17 02111-1307 USA. */ 18 19 /* 20 * $Id: $ 21 * $DateTime: $ 22 * $Change: $ 23 */ 24 25 #ifndef _NETINET_ICMP6_H 26 #define _NETINET_ICMP6_H 1 27 28 #include <inttypes.h> 29 #include <string.h> 30 #include <sys/types.h> 31 #include <netinet/in.h> 32 33 #define ICMP6_FILTER 1 34 35 #define ICMP6_FILTER_BLOCK 1 36 #define ICMP6_FILTER_PASS 2 37 #define ICMP6_FILTER_BLOCKOTHERS 3 38 #define ICMP6_FILTER_PASSONLY 4 39 40 struct icmp6_filter 41 { 42 uint32_t data[8]; 43 }; 44 45 struct icmp6_hdr 46 { 47 uint8_t icmp6_type; /* type field */ 48 uint8_t icmp6_code; /* code field */ 49 uint16_t icmp6_cksum; /* checksum field */ 50 union 51 { 52 uint32_t icmp6_un_data32[1]; /* type-specific field */ 53 uint16_t icmp6_un_data16[2]; /* type-specific field */ 54 uint8_t icmp6_un_data8[4]; /* type-specific field */ 55 } icmp6_dataun; 56 }; 57 58 #define icmp6_data32 icmp6_dataun.icmp6_un_data32 59 #define icmp6_data16 icmp6_dataun.icmp6_un_data16 60 #define icmp6_data8 icmp6_dataun.icmp6_un_data8 61 #define icmp6_pptr icmp6_data32[0] /* parameter prob */ 62 #define icmp6_mtu icmp6_data32[0] /* packet too big */ 63 #define icmp6_id icmp6_data16[0] /* echo request/reply */ 64 #define icmp6_seq icmp6_data16[1] /* echo request/reply */ 65 #define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */ 66 67 #define ICMP6_DST_UNREACH 1 68 #define ICMP6_PACKET_TOO_BIG 2 69 #define ICMP6_TIME_EXCEEDED 3 70 #define ICMP6_PARAM_PROB 4 71 72 #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */ 73 74 #define ICMP6_ECHO_REQUEST 128 75 #define ICMP6_ECHO_REPLY 129 76 #define ICMP6_MEMBERSHIP_QUERY 130 77 #define ICMP6_MEMBERSHIP_REPORT 131 78 #define ICMP6_MEMBERSHIP_REDUCTION 132 79 80 #define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */ 81 #define ICMP6_DST_UNREACH_ADMIN 1 /* communication with destination */ 82 /* administratively prohibited */ 83 #define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor */ 84 #define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */ 85 #define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */ 86 #define ICMP6_DST_UNREACH_NOPORT 4 /* bad port */ 87 88 #define ICMP6_TIME_EXCEED_TRANSIT 0 /* Hop Limit == 0 in transit */ 89 #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* Reassembly time out */ 90 91 #define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */ 92 #define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized Next Header */ 93 #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized IPv6 option */ 94 95 #define ICMP6_FILTER_WILLPASS(type, filterp) \ 96 ((((filterp)->data[(type) >> 5]) & (1 << ((type) & 31))) == 0) 97 98 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \ 99 ((((filterp)->data[(type) >> 5]) & (1 << ((type) & 31))) != 0) 100 101 #define ICMP6_FILTER_SETPASS(type, filterp) \ 102 ((((filterp)->data[(type) >> 5]) &= ~(1 << ((type) & 31)))) 103 104 #define ICMP6_FILTER_SETBLOCK(type, filterp) \ 105 ((((filterp)->data[(type) >> 5]) |= (1 << ((type) & 31)))) 106 107 #define ICMP6_FILTER_SETPASSALL(filterp) \ 108 memset (filterp, 0, sizeof (struct icmp6_filter)); 109 110 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 111 memset (filterp, 0xFF, sizeof (struct icmp6_filter)); 112 113 #define ND_ROUTER_SOLICIT 133 114 #define ND_ROUTER_ADVERT 134 115 #define ND_NEIGHBOR_SOLICIT 135 116 #define ND_NEIGHBOR_ADVERT 136 117 #define ND_REDIRECT 137 118 119 struct nd_router_solicit /* router solicitation */ 120 { 121 struct icmp6_hdr nd_rs_hdr; 122 /* could be followed by options */ 123 }; 124 125 #define nd_rs_type nd_rs_hdr.icmp6_type 126 #define nd_rs_code nd_rs_hdr.icmp6_code 127 #define nd_rs_cksum nd_rs_hdr.icmp6_cksum 128 #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0] 129 130 struct nd_router_advert /* router advertisement */ 131 { 132 struct icmp6_hdr nd_ra_hdr; 133 uint32_t nd_ra_reachable; /* reachable time */ 134 uint32_t nd_ra_retransmit; /* retransmit timer */ 135 /* could be followed by options */ 136 }; 137 138 #define nd_ra_type nd_ra_hdr.icmp6_type 139 #define nd_ra_code nd_ra_hdr.icmp6_code 140 #define nd_ra_cksum nd_ra_hdr.icmp6_cksum 141 #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0] 142 #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1] 143 #define ND_RA_FLAG_MANAGED 0x80 144 #define ND_RA_FLAG_OTHER 0x40 145 #define ND_RA_FLAG_HOME_AGENT 0x20 146 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] 147 148 struct nd_neighbor_solicit /* neighbor solicitation */ 149 { 150 struct icmp6_hdr nd_ns_hdr; 151 struct in6_addr nd_ns_target; /* target address */ 152 /* could be followed by options */ 153 }; 154 155 #define nd_ns_type nd_ns_hdr.icmp6_type 156 #define nd_ns_code nd_ns_hdr.icmp6_code 157 #define nd_ns_cksum nd_ns_hdr.icmp6_cksum 158 #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] 159 160 struct nd_neighbor_advert /* neighbor advertisement */ 161 { 162 struct icmp6_hdr nd_na_hdr; 163 struct in6_addr nd_na_target; /* target address */ 164 /* could be followed by options */ 165 }; 166 167 #define nd_na_type nd_na_hdr.icmp6_type 168 #define nd_na_code nd_na_hdr.icmp6_code 169 #define nd_na_cksum nd_na_hdr.icmp6_cksum 170 #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] 171 #if BYTE_ORDER == BIG_ENDIAN 172 #define ND_NA_FLAG_ROUTER 0x80000000 173 #define ND_NA_FLAG_SOLICITED 0x40000000 174 #define ND_NA_FLAG_OVERRIDE 0x20000000 175 #else /* BYTE_ORDER == LITTLE_ENDIAN */ 176 #define ND_NA_FLAG_ROUTER 0x00000080 177 #define ND_NA_FLAG_SOLICITED 0x00000040 178 #define ND_NA_FLAG_OVERRIDE 0x00000020 179 #endif 180 181 struct nd_redirect /* redirect */ 182 { 183 struct icmp6_hdr nd_rd_hdr; 184 struct in6_addr nd_rd_target; /* target address */ 185 struct in6_addr nd_rd_dst; /* destination address */ 186 /* could be followed by options */ 187 }; 188 189 #define nd_rd_type nd_rd_hdr.icmp6_type 190 #define nd_rd_code nd_rd_hdr.icmp6_code 191 #define nd_rd_cksum nd_rd_hdr.icmp6_cksum 192 #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] 193 194 struct nd_opt_hdr /* Neighbor discovery option header */ 195 { 196 uint8_t nd_opt_type; 197 uint8_t nd_opt_len; /* in units of 8 octets */ 198 /* followed by option specific data */ 199 }; 200 201 #define ND_OPT_SOURCE_LINKADDR 1 202 #define ND_OPT_TARGET_LINKADDR 2 203 #define ND_OPT_PREFIX_INFORMATION 3 204 #define ND_OPT_REDIRECTED_HEADER 4 205 #define ND_OPT_MTU 5 206 #define ND_OPT_RTR_ADV_INTERVAL 7 207 #define ND_OPT_HOME_AGENT_INFO 8 208 209 struct nd_opt_prefix_info /* prefix information */ 210 { 211 uint8_t nd_opt_pi_type; 212 uint8_t nd_opt_pi_len; 213 uint8_t nd_opt_pi_prefix_len; 214 uint8_t nd_opt_pi_flags_reserved; 215 uint32_t nd_opt_pi_valid_time; 216 uint32_t nd_opt_pi_preferred_time; 217 uint32_t nd_opt_pi_reserved2; 218 struct in6_addr nd_opt_pi_prefix; 219 }; 220 221 #define ND_OPT_PI_FLAG_ONLINK 0x80 222 #define ND_OPT_PI_FLAG_AUTO 0x40 223 #define ND_OPT_PI_FLAG_RADDR 0x20 224 225 struct nd_opt_rd_hdr /* redirected header */ 226 { 227 uint8_t nd_opt_rh_type; 228 uint8_t nd_opt_rh_len; 229 uint16_t nd_opt_rh_reserved1; 230 uint32_t nd_opt_rh_reserved2; 231 /* followed by IP header and data */ 232 }; 233 234 struct nd_opt_mtu /* MTU option */ 235 { 236 uint8_t nd_opt_mtu_type; 237 uint8_t nd_opt_mtu_len; 238 uint16_t nd_opt_mtu_reserved; 239 uint32_t nd_opt_mtu_mtu; 240 }; 241 242 /* Mobile IPv6 extension: Advertisement Interval. */ 243 struct nd_opt_adv_interval 244 { 245 uint8_t nd_opt_adv_interval_type; 246 uint8_t nd_opt_adv_interval_len; 247 uint16_t nd_opt_adv_interval_reserved; 248 uint32_t nd_opt_adv_interval_ival; 249 }; 250 251 /* Mobile IPv6 extension: Home Agent Info. */ 252 struct nd_opt_home_agent_info 253 { 254 uint8_t nd_opt_home_agent_info_type; 255 uint8_t nd_opt_home_agent_info_len; 256 uint16_t nd_opt_home_agent_info_reserved; 257 int16_t nd_opt_home_agent_info_preference; 258 uint16_t nd_opt_home_agent_info_lifetime; 259 }; 260 261 #endif /* netinet/icmpv6.h */ 262