1 /* $OpenBSD: ldp.h,v 1.42 2017/03/04 00:21:48 renato Exp $ */ 2 3 /* 4 * Copyright (c) 2013, 2016 Renato Westphal <renato@openbsd.org> 5 * Copyright (c) 2009 Michele Marchetto <michele@openbsd.org> 6 * Copyright (c) 2004, 2005, 2008 Esben Norby <norby@openbsd.org> 7 * 8 * Permission to use, copy, modify, and distribute this software for any 9 * purpose with or without fee is hereby granted, provided that the above 10 * copyright notice and this permission notice appear in all copies. 11 * 12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR 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 OF 18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19 */ 20 21 /* LDP protocol definitions */ 22 23 #ifndef _LDP_H_ 24 #define _LDP_H_ 25 26 #include <sys/types.h> 27 28 /* misc */ 29 #define LDP_VERSION 1 30 #define LDP_PORT 646 31 #define LDP_MAX_LEN 4096 32 33 /* All Routers on this Subnet group multicast addresses */ 34 #define AllRouters_v4 "224.0.0.2" 35 #define AllRouters_v6 "ff02::2" 36 37 #define LINK_DFLT_HOLDTIME 15 38 #define TARGETED_DFLT_HOLDTIME 45 39 #define MIN_HOLDTIME 3 40 #define MAX_HOLDTIME 0xffff 41 #define INFINITE_HOLDTIME 0xffff 42 43 #define DEFAULT_KEEPALIVE 180 44 #define MIN_KEEPALIVE 3 45 #define MAX_KEEPALIVE 0xffff 46 #define KEEPALIVE_PER_PERIOD 3 47 #define INIT_FSM_TIMEOUT 15 48 49 #define DEFAULT_HELLO_INTERVAL 5 50 #define MIN_HELLO_INTERVAL 1 51 #define MAX_HELLO_INTERVAL 0xffff 52 53 #define INIT_DELAY_TMR 15 54 #define MAX_DELAY_TMR 120 55 56 #define MIN_PWID_ID 1 57 #define MAX_PWID_ID 0xffffffff 58 59 #define DEFAULT_L2VPN_MTU 1500 60 #define MIN_L2VPN_MTU 512 61 #define MAX_L2VPN_MTU 0xffff 62 63 /* LDP message types */ 64 #define MSG_TYPE_NOTIFICATION 0x0001 65 #define MSG_TYPE_HELLO 0x0100 66 #define MSG_TYPE_INIT 0x0200 67 #define MSG_TYPE_KEEPALIVE 0x0201 68 #define MSG_TYPE_CAPABILITY 0x0202 /* RFC 5561 */ 69 #define MSG_TYPE_ADDR 0x0300 70 #define MSG_TYPE_ADDRWITHDRAW 0x0301 71 #define MSG_TYPE_LABELMAPPING 0x0400 72 #define MSG_TYPE_LABELREQUEST 0x0401 73 #define MSG_TYPE_LABELWITHDRAW 0x0402 74 #define MSG_TYPE_LABELRELEASE 0x0403 75 #define MSG_TYPE_LABELABORTREQ 0x0404 76 77 /* LDP TLV types */ 78 #define TLV_TYPE_FEC 0x0100 79 #define TLV_TYPE_ADDRLIST 0x0101 80 #define TLV_TYPE_HOPCOUNT 0x0103 81 #define TLV_TYPE_PATHVECTOR 0x0104 82 #define TLV_TYPE_GENERICLABEL 0x0200 83 #define TLV_TYPE_ATMLABEL 0x0201 84 #define TLV_TYPE_FRLABEL 0x0202 85 #define TLV_TYPE_STATUS 0x0300 86 #define TLV_TYPE_EXTSTATUS 0x0301 87 #define TLV_TYPE_RETURNEDPDU 0x0302 88 #define TLV_TYPE_RETURNEDMSG 0x0303 89 #define TLV_TYPE_COMMONHELLO 0x0400 90 #define TLV_TYPE_IPV4TRANSADDR 0x0401 91 #define TLV_TYPE_CONFIG 0x0402 92 #define TLV_TYPE_IPV6TRANSADDR 0x0403 93 #define TLV_TYPE_COMMONSESSION 0x0500 94 #define TLV_TYPE_ATMSESSIONPAR 0x0501 95 #define TLV_TYPE_FRSESSION 0x0502 96 #define TLV_TYPE_LABELREQUEST 0x0600 97 /* RFC 4447 */ 98 #define TLV_TYPE_MAC_LIST 0x8404 99 #define TLV_TYPE_PW_STATUS 0x896A 100 #define TLV_TYPE_PW_IF_PARAM 0x096B 101 #define TLV_TYPE_PW_GROUP_ID 0x096C 102 /* RFC 5561 */ 103 #define TLV_TYPE_RETURNED_TLVS 0x8304 104 #define TLV_TYPE_DYNAMIC_CAP 0x8506 105 /* RFC 5918 */ 106 #define TLV_TYPE_TWCARD_CAP 0x850B 107 /* RFC 5919 */ 108 #define TLV_TYPE_UNOTIF_CAP 0x8603 109 /* RFC 7552 */ 110 #define TLV_TYPE_DUALSTACK 0x8701 111 112 /* LDP header */ 113 struct ldp_hdr { 114 uint16_t version; 115 uint16_t length; 116 uint32_t lsr_id; 117 uint16_t lspace_id; 118 } __packed; 119 120 #define LDP_HDR_SIZE 10 /* actual size of the LDP header */ 121 #define LDP_HDR_PDU_LEN 6 /* minimum "PDU Length" */ 122 #define LDP_HDR_DEAD_LEN 4 123 124 /* TLV record */ 125 struct tlv { 126 uint16_t type; 127 uint16_t length; 128 }; 129 #define TLV_HDR_SIZE 4 130 131 struct ldp_msg { 132 uint16_t type; 133 uint16_t length; 134 uint32_t id; 135 /* Mandatory Parameters */ 136 /* Optional Parameters */ 137 } __packed; 138 139 #define LDP_MSG_SIZE 8 /* minimum size of LDP message */ 140 #define LDP_MSG_LEN 4 /* minimum "Message Length" */ 141 #define LDP_MSG_DEAD_LEN 4 142 143 #define UNKNOWN_FLAG 0x8000 144 #define FORWARD_FLAG 0xc000 145 146 struct hello_prms_tlv { 147 uint16_t type; 148 uint16_t length; 149 uint16_t holdtime; 150 uint16_t flags; 151 }; 152 #define F_HELLO_TARGETED 0x8000 153 #define F_HELLO_REQ_TARG 0x4000 154 #define F_HELLO_GTSM 0x2000 155 156 struct hello_prms_opt4_tlv { 157 uint16_t type; 158 uint16_t length; 159 uint32_t value; 160 }; 161 162 struct hello_prms_opt16_tlv { 163 uint16_t type; 164 uint16_t length; 165 uint8_t value[16]; 166 }; 167 168 #define DUAL_STACK_LDPOV4 4 169 #define DUAL_STACK_LDPOV6 6 170 171 #define F_HELLO_TLV_RCVD_ADDR 0x01 172 #define F_HELLO_TLV_RCVD_CONF 0x02 173 #define F_HELLO_TLV_RCVD_DS 0x04 174 175 #define S_SUCCESS 0x00000000 176 #define S_BAD_LDP_ID 0x80000001 177 #define S_BAD_PROTO_VER 0x80000002 178 #define S_BAD_PDU_LEN 0x80000003 179 #define S_UNKNOWN_MSG 0x00000004 180 #define S_BAD_MSG_LEN 0x80000005 181 #define S_UNKNOWN_TLV 0x00000006 182 #define S_BAD_TLV_LEN 0x80000007 183 #define S_BAD_TLV_VAL 0x80000008 184 #define S_HOLDTIME_EXP 0x80000009 185 #define S_SHUTDOWN 0x8000000A 186 #define S_LOOP_DETECTED 0x0000000B 187 #define S_UNKNOWN_FEC 0x0000000C 188 #define S_NO_ROUTE 0x0000000D 189 #define S_NO_LABEL_RES 0x0000000E 190 #define S_AVAILABLE 0x0000000F 191 #define S_NO_HELLO 0x80000010 192 #define S_PARM_ADV_MODE 0x80000011 193 #define S_MAX_PDU_LEN 0x80000012 194 #define S_PARM_L_RANGE 0x80000013 195 #define S_KEEPALIVE_TMR 0x80000014 196 #define S_LAB_REQ_ABRT 0x00000015 197 #define S_MISS_MSG 0x00000016 198 #define S_UNSUP_ADDR 0x00000017 199 #define S_KEEPALIVE_BAD 0x80000018 200 #define S_INTERN_ERR 0x80000019 201 /* RFC 4447 */ 202 #define S_ILLEGAL_CBIT 0x00000024 203 #define S_WRONG_CBIT 0x00000025 204 #define S_INCPT_BITRATE 0x00000026 205 #define S_CEP_MISCONF 0x00000027 206 #define S_PW_STATUS 0x00000028 207 #define S_UNASSIGN_TAI 0x00000029 208 #define S_MISCONF_ERR 0x0000002A 209 #define S_WITHDRAW_MTHD 0x0000002B 210 /* RFC 5561 */ 211 #define S_UNSSUPORTDCAP 0x0000002E 212 /* RFC 5919 */ 213 #define S_ENDOFLIB 0x0000002F 214 /* RFC 7552 */ 215 #define S_TRANS_MISMTCH 0x80000032 216 #define S_DS_NONCMPLNCE 0x80000033 217 218 struct sess_prms_tlv { 219 uint16_t type; 220 uint16_t length; 221 uint16_t proto_version; 222 uint16_t keepalive_time; 223 uint8_t reserved; 224 uint8_t pvlim; 225 uint16_t max_pdu_len; 226 uint32_t lsr_id; 227 uint16_t lspace_id; 228 } __packed; 229 230 #define SESS_PRMS_SIZE 18 231 #define SESS_PRMS_LEN 14 232 233 struct status_tlv { 234 uint16_t type; 235 uint16_t length; 236 uint32_t status_code; 237 uint32_t msg_id; 238 uint16_t msg_type; 239 } __packed; 240 241 #define STATUS_SIZE 14 242 #define STATUS_TLV_LEN 10 243 #define STATUS_FATAL 0x80000000 244 245 struct capability_tlv { 246 uint16_t type; 247 uint16_t length; 248 uint8_t reserved; 249 }; 250 #define STATE_BIT 0x80 251 252 #define F_CAP_TLV_RCVD_DYNAMIC 0x01 253 #define F_CAP_TLV_RCVD_TWCARD 0x02 254 #define F_CAP_TLV_RCVD_UNOTIF 0x04 255 256 #define CAP_TLV_DYNAMIC_SIZE 5 257 #define CAP_TLV_DYNAMIC_LEN 1 258 259 #define CAP_TLV_TWCARD_SIZE 5 260 #define CAP_TLV_TWCARD_LEN 1 261 262 #define CAP_TLV_UNOTIF_SIZE 5 263 #define CAP_TLV_UNOTIF_LEN 1 264 265 #define AF_IPV4 0x1 266 #define AF_IPV6 0x2 267 268 struct address_list_tlv { 269 uint16_t type; 270 uint16_t length; 271 uint16_t family; 272 /* address entries */ 273 } __packed; 274 275 #define ADDR_LIST_SIZE 6 276 277 #define FEC_ELM_WCARD_LEN 1 278 #define FEC_ELM_PREFIX_MIN_LEN 4 279 #define FEC_PWID_ELM_MIN_LEN 8 280 #define FEC_PWID_SIZE 4 281 #define FEC_ELM_TWCARD_MIN_LEN 3 282 283 #define MAP_TYPE_WILDCARD 0x01 284 #define MAP_TYPE_PREFIX 0x02 285 #define MAP_TYPE_TYPED_WCARD 0x05 286 #define MAP_TYPE_PWID 0x80 287 #define MAP_TYPE_GENPWID 0x81 288 289 #define CONTROL_WORD_FLAG 0x8000 290 #define PW_TYPE_ETHERNET_TAGGED 0x0004 291 #define PW_TYPE_ETHERNET 0x0005 292 #define PW_TYPE_WILDCARD 0x7FFF 293 #define DEFAULT_PW_TYPE PW_TYPE_ETHERNET 294 295 #define PW_TWCARD_RESERVED_BIT 0x8000 296 297 /* RFC 4447 Sub-TLV record */ 298 struct subtlv { 299 uint8_t type; 300 uint8_t length; 301 }; 302 #define SUBTLV_HDR_SIZE 2 303 304 #define SUBTLV_IFMTU 0x01 305 #define SUBTLV_VLANID 0x06 306 307 #define FEC_SUBTLV_IFMTU_SIZE 4 308 #define FEC_SUBTLV_VLANID_SIZE 4 309 310 struct label_tlv { 311 uint16_t type; 312 uint16_t length; 313 uint32_t label; 314 }; 315 #define LABEL_TLV_SIZE 8 316 #define LABEL_TLV_LEN 4 317 318 struct reqid_tlv { 319 uint16_t type; 320 uint16_t length; 321 uint32_t reqid; 322 }; 323 #define REQID_TLV_SIZE 8 324 #define REQID_TLV_LEN 4 325 326 struct pw_status_tlv { 327 uint16_t type; 328 uint16_t length; 329 uint32_t value; 330 }; 331 #define PW_STATUS_TLV_SIZE 8 332 #define PW_STATUS_TLV_LEN 4 333 334 #define PW_FORWARDING 0 335 #define PW_NOT_FORWARDING (1 << 0) 336 #define PW_LOCAL_RX_FAULT (1 << 1) 337 #define PW_LOCAL_TX_FAULT (1 << 2) 338 #define PW_PSN_RX_FAULT (1 << 3) 339 #define PW_PSN_TX_FAULT (1 << 4) 340 341 #define NO_LABEL UINT32_MAX 342 343 #endif /* !_LDP_H_ */ 344