1 /* dhcp6.h 2 3 DHCPv6 Protocol structures... */ 4 5 /* 6 * Copyright (c) 2006-2017 by Internet Systems Consortium, Inc. ("ISC") 7 * 8 * This Source Code Form is subject to the terms of the Mozilla Public 9 * License, v. 2.0. If a copy of the MPL was not distributed with this 10 * file, You can obtain one at http://mozilla.org/MPL/2.0/. 11 * 12 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES 13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR 15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT 18 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19 * 20 * Internet Systems Consortium, Inc. 21 * 950 Charter Street 22 * Redwood City, CA 94063 23 * <info@isc.org> 24 * https://www.isc.org/ 25 */ 26 27 28 /* DHCPv6 Option codes: */ 29 30 #define D6O_CLIENTID 1 /* RFC3315 */ 31 #define D6O_SERVERID 2 32 #define D6O_IA_NA 3 33 #define D6O_IA_TA 4 34 #define D6O_IAADDR 5 35 #define D6O_ORO 6 36 #define D6O_PREFERENCE 7 37 #define D6O_ELAPSED_TIME 8 38 #define D6O_RELAY_MSG 9 39 /* Option code 10 unassigned. */ 40 #define D6O_AUTH 11 41 #define D6O_UNICAST 12 42 #define D6O_STATUS_CODE 13 43 #define D6O_RAPID_COMMIT 14 44 #define D6O_USER_CLASS 15 45 #define D6O_VENDOR_CLASS 16 46 #define D6O_VENDOR_OPTS 17 47 #define D6O_INTERFACE_ID 18 48 #define D6O_RECONF_MSG 19 49 #define D6O_RECONF_ACCEPT 20 50 #define D6O_SIP_SERVERS_DNS 21 /* RFC3319 */ 51 #define D6O_SIP_SERVERS_ADDR 22 /* RFC3319 */ 52 #define D6O_NAME_SERVERS 23 /* RFC3646 */ 53 #define D6O_DOMAIN_SEARCH 24 /* RFC3646 */ 54 #define D6O_IA_PD 25 /* RFC3633 */ 55 #define D6O_IAPREFIX 26 /* RFC3633 */ 56 #define D6O_NIS_SERVERS 27 /* RFC3898 */ 57 #define D6O_NISP_SERVERS 28 /* RFC3898 */ 58 #define D6O_NIS_DOMAIN_NAME 29 /* RFC3898 */ 59 #define D6O_NISP_DOMAIN_NAME 30 /* RFC3898 */ 60 #define D6O_SNTP_SERVERS 31 /* RFC4075 */ 61 #define D6O_INFORMATION_REFRESH_TIME 32 /* RFC4242 */ 62 #define D6O_BCMCS_SERVER_D 33 /* RFC4280 */ 63 #define D6O_BCMCS_SERVER_A 34 /* RFC4280 */ 64 /* 35 is unassigned */ 65 #define D6O_GEOCONF_CIVIC 36 /* RFC4776 */ 66 #define D6O_REMOTE_ID 37 /* RFC4649 */ 67 #define D6O_SUBSCRIBER_ID 38 /* RFC4580 */ 68 #define D6O_CLIENT_FQDN 39 /* RFC4704 */ 69 #define D6O_PANA_AGENT 40 /* paa-option */ 70 #define D6O_NEW_POSIX_TIMEZONE 41 /* RFC4833 */ 71 #define D6O_NEW_TZDB_TIMEZONE 42 /* RFC4833 */ 72 #define D6O_ERO 43 /* RFC4994 */ 73 #define D6O_LQ_QUERY 44 /* RFC5007 */ 74 #define D6O_CLIENT_DATA 45 /* RFC5007 */ 75 #define D6O_CLT_TIME 46 /* RFC5007 */ 76 #define D6O_LQ_RELAY_DATA 47 /* RFC5007 */ 77 #define D6O_LQ_CLIENT_LINK 48 /* RFC5007 */ 78 #define D6O_MIP6_HNIDF 49 /* RFC6610 */ 79 #define D6O_MIP6_VDINF 50 /* RFC6610 */ 80 #define D6O_V6_LOST 51 /* RFC5223 */ 81 #define D6O_CAPWAP_AC_V6 52 /* RFC5417 */ 82 #define D6O_RELAY_ID 53 /* RFC5460 */ 83 #define D6O_IPV6_ADDRESS_MOS 54 /* RFC5678 */ 84 #define D6O_IPV6_FQDN_MOS 55 /* RFC5678 */ 85 #define D6O_NTP_SERVER 56 /* RFC5908 */ 86 #define D6O_V6_ACCESS_DOMAIN 57 /* RFC5986 */ 87 #define D6O_SIP_UA_CS_LIST 58 /* RFC6011 */ 88 #define D6O_BOOTFILE_URL 59 /* RFC5970 */ 89 #define D6O_BOOTFILE_PARAM 60 /* RFC5970 */ 90 #define D6O_CLIENT_ARCH_TYPE 61 /* RFC5970 */ 91 #define D6O_NII 62 /* RFC5970 */ 92 #define D6O_GEOLOCATION 63 /* RFC6225 */ 93 #define D6O_AFTR_NAME 64 /* RFC6334 */ 94 #define D6O_ERP_LOCAL_DOMAIN_NAME 65 /* RFC6440 */ 95 #define D6O_RSOO 66 /* RFC6422 */ 96 #define D6O_PD_EXCLUDE 67 /* RFC6603 */ 97 #define D6O_VSS 68 /* RFC6607 */ 98 #define D6O_MIP6_IDINF 69 /* RFC6610 */ 99 #define D6O_MIP6_UDINF 70 /* RFC6610 */ 100 #define D6O_MIP6_HNP 71 /* RFC6610 */ 101 #define D6O_MIP6_HAA 72 /* RFC6610 */ 102 #define D6O_MIP6_HAF 73 /* RFC6610 */ 103 #define D6O_RDNSS_SELECTION 74 /* RFC6731 */ 104 #define D6O_KRB_PRINCIPAL_NAME 75 /* RFC6784 */ 105 #define D6O_KRB_REALM_NAME 76 /* RFC6784 */ 106 #define D6O_KRB_DEFAULT_REALM_NAME 77 /* RFC6784 */ 107 #define D6O_KRB_KDC 78 /* RFC6784 */ 108 #define D6O_CLIENT_LINKLAYER_ADDR 79 /* RFC6939 */ 109 #define D6O_LINK_ADDRESS 80 /* RFC6977 */ 110 #define D6O_RADIUS 81 /* RFC7037 */ 111 #define D6O_SOL_MAX_RT 82 /* RFC7083 */ 112 #define D6O_INF_MAX_RT 83 /* RFC7083 */ 113 #define D6O_ADDRSEL 84 /* RFC7078 */ 114 #define D6O_ADDRSEL_TABLE 85 /* RFC7078 */ 115 #define D6O_V6_PCP_SERVER 86 /* RFC7291 */ 116 #define D6O_DHCPV4_MSG 87 /* RFC7341 */ 117 #define D6O_DHCP4_O_DHCP6_SERVER 88 /* RFC7341 */ 118 /* not yet assigned but next free value */ 119 #define D6O_RELAY_SOURCE_PORT 135 /* I-D */ 120 121 /* 122 * Status Codes, from RFC 3315 section 24.4, and RFC 3633, 5007, 5460. 123 */ 124 #define STATUS_Success 0 125 #define STATUS_UnspecFail 1 126 #define STATUS_NoAddrsAvail 2 127 #define STATUS_NoBinding 3 128 #define STATUS_NotOnLink 4 129 #define STATUS_UseMulticast 5 130 #define STATUS_NoPrefixAvail 6 131 #define STATUS_UnknownQueryType 7 132 #define STATUS_MalformedQuery 8 133 #define STATUS_NotConfigured 9 134 #define STATUS_NotAllowed 10 135 #define STATUS_QueryTerminated 11 136 137 /* 138 * DHCPv6 message types, defined in section 5.3 of RFC 3315 139 */ 140 #define DHCPV6_SOLICIT 1 141 #define DHCPV6_ADVERTISE 2 142 #define DHCPV6_REQUEST 3 143 #define DHCPV6_CONFIRM 4 144 #define DHCPV6_RENEW 5 145 #define DHCPV6_REBIND 6 146 #define DHCPV6_REPLY 7 147 #define DHCPV6_RELEASE 8 148 #define DHCPV6_DECLINE 9 149 #define DHCPV6_RECONFIGURE 10 150 #define DHCPV6_INFORMATION_REQUEST 11 151 #define DHCPV6_RELAY_FORW 12 152 #define DHCPV6_RELAY_REPL 13 153 #define DHCPV6_LEASEQUERY 14 /* RFC5007 */ 154 #define DHCPV6_LEASEQUERY_REPLY 15 /* RFC5007 */ 155 #define DHCPV6_LEASEQUERY_DONE 16 /* RFC5460 */ 156 #define DHCPV6_LEASEQUERY_DATA 17 /* RFC5460 */ 157 #define DHCPV6_RECONFIGURE_REQUEST 18 /* RFC6977 */ 158 #define DHCPV6_RECONFIGURE_REPLY 19 /* RFC6977 */ 159 #define DHCPV6_DHCPV4_QUERY 20 /* RFC7341 */ 160 #define DHCPV6_DHCPV4_RESPONSE 21 /* RFC7341 */ 161 162 extern const char *dhcpv6_type_names[]; 163 extern const int dhcpv6_type_name_max; 164 165 /* DUID type definitions (RFC3315 section 9). 166 */ 167 #define DUID_LLT 1 168 #define DUID_EN 2 169 #define DUID_LL 3 170 #define DUID_UUID 4 /* RFC6355 */ 171 172 /* Offsets into IA_*'s where Option spaces commence. */ 173 #define IA_NA_OFFSET 12 /* IAID, T1, T2, all 4 octets each */ 174 #define IA_TA_OFFSET 4 /* IAID only, 4 octets */ 175 #define IA_PD_OFFSET 12 /* IAID, T1, T2, all 4 octets each */ 176 177 /* Offset into IAADDR's where Option spaces commence. */ 178 #define IAADDR_OFFSET 24 179 180 /* Offset into IAPREFIX's where Option spaces commence. */ 181 #define IAPREFIX_OFFSET 25 182 183 /* Offset into LQ_QUERY's where Option spaces commence. */ 184 #define LQ_QUERY_OFFSET 17 185 186 /* 187 * DHCPv6 well-known multicast addressess, from section 5.1 of RFC 3315 188 */ 189 #define All_DHCP_Relay_Agents_and_Servers "FF02::1:2" 190 #define All_DHCP_Servers "FF05::1:3" 191 192 /* 193 * DHCPv6 Retransmission Constants (RFC3315 section 5.5, RFC 5007) 194 */ 195 196 #define SOL_MAX_DELAY 1 197 #define SOL_TIMEOUT 1 198 #define SOL_MAX_RT 120 199 #define REQ_TIMEOUT 1 200 #define REQ_MAX_RT 30 201 #define REQ_MAX_RC 10 202 #define CNF_MAX_DELAY 1 203 #define CNF_TIMEOUT 1 204 #define CNF_MAX_RT 4 205 #define CNF_MAX_RD 10 206 #define REN_TIMEOUT 10 207 #define REN_MAX_RT 600 208 #define REB_TIMEOUT 10 209 #define REB_MAX_RT 600 210 #define INF_MAX_DELAY 1 211 #define INF_TIMEOUT 1 212 #define INF_MAX_RT 120 213 #define REL_TIMEOUT 1 214 #define REL_MAX_RC 5 215 #define DEC_TIMEOUT 1 216 #define DEC_MAX_RC 5 217 #define REC_TIMEOUT 2 218 #define REC_MAX_RC 8 219 #define HOP_COUNT_LIMIT 32 220 #define LQ6_TIMEOUT 1 221 #define LQ6_MAX_RT 10 222 #define LQ6_MAX_RC 5 223 224 /* 225 * Normal packet format, defined in section 6 of RFC 3315 226 */ 227 struct dhcpv6_packet { 228 unsigned char msg_type; 229 unsigned char transaction_id[3]; 230 unsigned char options[FLEXIBLE_ARRAY_MEMBER]; 231 }; 232 233 /* Offset into DHCPV6 Reply packets where Options spaces commence. */ 234 #define REPLY_OPTIONS_INDEX 4 235 236 /* 237 * Relay packet format, defined in section 7 of RFC 3315 238 */ 239 struct dhcpv6_relay_packet { 240 unsigned char msg_type; 241 unsigned char hop_count; 242 unsigned char link_address[16]; 243 unsigned char peer_address[16]; 244 unsigned char options[FLEXIBLE_ARRAY_MEMBER]; 245 }; 246 #define MAX_V6RELAY_HOPS 32 247 248 /* 249 * DHCPv4-over-DHCPv6 packet format, defined in RFC 4731 250 */ 251 struct dhcpv4_over_dhcpv6_packet { 252 unsigned char msg_type; 253 unsigned char flags[3]; 254 unsigned char options[FLEXIBLE_ARRAY_MEMBER]; 255 }; 256 #define DHCP4O6_QUERY_UNICAST 128 257 258 /* DHCPv4-over-DHCPv6 ISC vendor suboptions */ 259 #define D4O6_INTERFACE 60000 260 #define D4O6_SRC_ADDRESS 60001 261 262 /* Leasequery query-types (RFC 5007, 5460) */ 263 264 #define LQ6QT_BY_ADDRESS 1 265 #define LQ6QT_BY_CLIENTID 2 266 #define LQ6QT_BY_RELAY_ID 3 267 #define LQ6QT_BY_LINK_ADDRESS 4 268 #define LQ6QT_BY_REMOTE_ID 5 269 270 /* 271 * DUID time starts 2000-01-01. 272 * This constant is the number of seconds since 1970-01-01, 273 * when the Unix epoch began. 274 */ 275 #define DUID_TIME_EPOCH 946684800 276 277 /* Information-Request Time option (RFC 4242) */ 278 279 #define IRT_DEFAULT 86400 280 #define IRT_MINIMUM 600 281 282 #define EUI_64_ID_LEN 12 /* 2 for duid-type, 2 for hardware type, 8 for ID */ 283 #define IAID_LEN 4 284 285 /* Offsets with iasubopt wire data of data values for IA_NA and TA */ 286 #define IASUBOPT_NA_ADDR_OFFSET 0 287 #define IASUBOPT_NA_PREF_OFFSET 16 288 #define IASUBOPT_NA_VALID_OFFSET 20 289 #define IASUBOPT_NA_LEN 24 290 291 /* Offsets with iasubopt wire data of data values for PD */ 292 #define IASUBOPT_PD_PREF_OFFSET 0 293 #define IASUBOPT_PD_VALID_OFFSET 4 294 #define IASUBOPT_PD_PREFLEN_OFFSET 8 295 #define IASUBOPT_PD_PREFIX_OFFSET 9 296 #define IASUBOPT_PD_LEN 25 297