1 /* $OpenBSD: ldp.h,v 1.35 2016/09/03 16:07:08 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_ADDR 0x0300 69 #define MSG_TYPE_ADDRWITHDRAW 0x0301 70 #define MSG_TYPE_LABELMAPPING 0x0400 71 #define MSG_TYPE_LABELREQUEST 0x0401 72 #define MSG_TYPE_LABELWITHDRAW 0x0402 73 #define MSG_TYPE_LABELRELEASE 0x0403 74 #define MSG_TYPE_LABELABORTREQ 0x0404 75 76 /* LDP TLV types */ 77 #define TLV_TYPE_FEC 0x0100 78 #define TLV_TYPE_ADDRLIST 0x0101 79 #define TLV_TYPE_HOPCOUNT 0x0103 80 #define TLV_TYPE_PATHVECTOR 0x0104 81 #define TLV_TYPE_GENERICLABEL 0x0200 82 #define TLV_TYPE_ATMLABEL 0x0201 83 #define TLV_TYPE_FRLABEL 0x0202 84 #define TLV_TYPE_STATUS 0x0300 85 #define TLV_TYPE_EXTSTATUS 0x0301 86 #define TLV_TYPE_RETURNEDPDU 0x0302 87 #define TLV_TYPE_RETURNEDMSG 0x0303 88 #define TLV_TYPE_COMMONHELLO 0x0400 89 #define TLV_TYPE_IPV4TRANSADDR 0x0401 90 #define TLV_TYPE_CONFIG 0x0402 91 #define TLV_TYPE_IPV6TRANSADDR 0x0403 92 #define TLV_TYPE_COMMONSESSION 0x0500 93 #define TLV_TYPE_ATMSESSIONPAR 0x0501 94 #define TLV_TYPE_FRSESSION 0x0502 95 #define TLV_TYPE_LABELREQUEST 0x0600 96 /* RFC 4447 */ 97 #define TLV_TYPE_PW_STATUS 0x096A 98 #define TLV_TYPE_PW_IF_PARAM 0x096B 99 #define TLV_TYPE_PW_GROUP_ID 0x096C 100 /* RFC 7552 */ 101 #define TLV_TYPE_DUALSTACK 0x8701 102 103 /* LDP header */ 104 struct ldp_hdr { 105 uint16_t version; 106 uint16_t length; 107 uint32_t lsr_id; 108 uint16_t lspace_id; 109 } __packed; 110 111 #define LDP_HDR_SIZE 10 /* actual size of the LDP header */ 112 #define LDP_HDR_PDU_LEN 6 /* minimum "PDU Length" */ 113 #define LDP_HDR_DEAD_LEN 4 114 115 /* TLV record */ 116 struct tlv { 117 uint16_t type; 118 uint16_t length; 119 }; 120 #define TLV_HDR_SIZE 4 121 122 struct ldp_msg { 123 uint16_t type; 124 uint16_t length; 125 uint32_t id; 126 /* Mandatory Parameters */ 127 /* Optional Parameters */ 128 } __packed; 129 130 #define LDP_MSG_SIZE 8 /* minimum size of LDP message */ 131 #define LDP_MSG_LEN 4 /* minimum "Message Length" */ 132 #define LDP_MSG_DEAD_LEN 4 133 134 #define UNKNOWN_FLAG 0x8000 135 #define FORWARD_FLAG 0xc000 136 137 struct hello_prms_tlv { 138 uint16_t type; 139 uint16_t length; 140 uint16_t holdtime; 141 uint16_t flags; 142 }; 143 #define F_HELLO_TARGETED 0x8000 144 #define F_HELLO_REQ_TARG 0x4000 145 #define F_HELLO_GTSM 0x2000 146 147 struct hello_prms_opt4_tlv { 148 uint16_t type; 149 uint16_t length; 150 uint32_t value; 151 }; 152 153 struct hello_prms_opt16_tlv { 154 uint16_t type; 155 uint16_t length; 156 uint8_t value[16]; 157 }; 158 159 #define DUAL_STACK_LDPOV4 4 160 #define DUAL_STACK_LDPOV6 6 161 162 #define F_HELLO_TLV_RCVD_ADDR 0x01 163 #define F_HELLO_TLV_RCVD_CONF 0x02 164 #define F_HELLO_TLV_RCVD_DS 0x04 165 166 #define S_SUCCESS 0x00000000 167 #define S_BAD_LDP_ID 0x80000001 168 #define S_BAD_PROTO_VER 0x80000002 169 #define S_BAD_PDU_LEN 0x80000003 170 #define S_UNKNOWN_MSG 0x00000004 171 #define S_BAD_MSG_LEN 0x80000005 172 #define S_UNKNOWN_TLV 0x00000006 173 #define S_BAD_TLV_LEN 0x80000007 174 #define S_BAD_TLV_VAL 0x80000008 175 #define S_HOLDTIME_EXP 0x80000009 176 #define S_SHUTDOWN 0x8000000A 177 #define S_LOOP_DETECTED 0x0000000B 178 #define S_UNKNOWN_FEC 0x0000000C 179 #define S_NO_ROUTE 0x0000000D 180 #define S_NO_LABEL_RES 0x0000000E 181 #define S_AVAILABLE 0x0000000F 182 #define S_NO_HELLO 0x80000010 183 #define S_PARM_ADV_MODE 0x80000011 184 #define S_MAX_PDU_LEN 0x80000012 185 #define S_PARM_L_RANGE 0x80000013 186 #define S_KEEPALIVE_TMR 0x80000014 187 #define S_LAB_REQ_ABRT 0x00000015 188 #define S_MISS_MSG 0x00000016 189 #define S_UNSUP_ADDR 0x00000017 190 #define S_KEEPALIVE_BAD 0x80000018 191 #define S_INTERN_ERR 0x80000019 192 /* RFC 4447 */ 193 #define S_ILLEGAL_CBIT 0x00000024 194 #define S_WRONG_CBIT 0x00000025 195 #define S_INCPT_BITRATE 0x00000026 196 #define S_CEP_MISCONF 0x00000027 197 #define S_PW_STATUS 0x00000028 198 #define S_UNASSIGN_TAI 0x00000029 199 #define S_MISCONF_ERR 0x0000002A 200 #define S_WITHDRAW_MTHD 0x0000002B 201 /* RFC 7552 */ 202 #define S_TRANS_MISMTCH 0x80000032 203 #define S_DS_NONCMPLNCE 0x80000033 204 205 struct sess_prms_tlv { 206 uint16_t type; 207 uint16_t length; 208 uint16_t proto_version; 209 uint16_t keepalive_time; 210 uint8_t reserved; 211 uint8_t pvlim; 212 uint16_t max_pdu_len; 213 uint32_t lsr_id; 214 uint16_t lspace_id; 215 } __packed; 216 217 #define SESS_PRMS_SIZE 18 218 #define SESS_PRMS_LEN 14 219 220 struct status_tlv { 221 uint16_t type; 222 uint16_t length; 223 uint32_t status_code; 224 uint32_t msg_id; 225 uint16_t msg_type; 226 } __packed; 227 228 #define STATUS_SIZE 14 229 #define STATUS_TLV_LEN 10 230 #define STATUS_FATAL 0x80000000 231 232 #define AF_IPV4 0x1 233 #define AF_IPV6 0x2 234 235 struct address_list_tlv { 236 uint16_t type; 237 uint16_t length; 238 uint16_t family; 239 /* address entries */ 240 } __packed; 241 242 #define ADDR_LIST_SIZE 6 243 244 #define FEC_ELM_WCARD_LEN 1 245 #define FEC_ELM_PREFIX_MIN_LEN 4 246 #define FEC_PWID_ELM_MIN_LEN 8 247 248 #define MAP_TYPE_WILDCARD 0x01 249 #define MAP_TYPE_PREFIX 0x02 250 #define MAP_TYPE_PWID 0x80 251 #define MAP_TYPE_GENPWID 0x81 252 253 #define CONTROL_WORD_FLAG 0x8000 254 #define PW_TYPE_ETHERNET_TAGGED 0x0004 255 #define PW_TYPE_ETHERNET 0x0005 256 #define DEFAULT_PW_TYPE PW_TYPE_ETHERNET 257 258 /* RFC 4447 Sub-TLV record */ 259 struct subtlv { 260 uint8_t type; 261 uint8_t length; 262 }; 263 #define SUBTLV_HDR_SIZE 2 264 265 #define SUBTLV_IFMTU 0x01 266 #define SUBTLV_VLANID 0x06 267 268 #define FEC_SUBTLV_IFMTU_SIZE 4 269 #define FEC_SUBTLV_VLANID_SIZE 4 270 271 struct label_tlv { 272 uint16_t type; 273 uint16_t length; 274 uint32_t label; 275 }; 276 #define LABEL_TLV_SIZE 8 277 #define LABEL_TLV_LEN 4 278 279 struct reqid_tlv { 280 uint16_t type; 281 uint16_t length; 282 uint32_t reqid; 283 }; 284 #define REQID_TLV_SIZE 8 285 #define REQID_TLV_LEN 4 286 287 struct pw_status_tlv { 288 uint16_t type; 289 uint16_t length; 290 uint32_t value; 291 }; 292 #define PW_STATUS_TLV_SIZE 8 293 #define PW_STATUS_TLV_LEN 4 294 295 #define PW_FORWARDING 0 296 #define PW_NOT_FORWARDING (1 << 0) 297 #define PW_LOCAL_RX_FAULT (1 << 1) 298 #define PW_LOCAL_TX_FAULT (1 << 2) 299 #define PW_PSN_RX_FAULT (1 << 3) 300 #define PW_PSN_TX_FAULT (1 << 4) 301 302 #define NO_LABEL UINT32_MAX 303 304 #endif /* !_LDP_H_ */ 305