ldp.h revision 1.25
1/* $OpenBSD: ldp.h,v 1.25 2016/05/23 16:33:32 renato Exp $ */ 2 3/* 4 * Copyright (c) 2009 Michele Marchetto <michele@openbsd.org> 5 * Copyright (c) 2004, 2005, 2008 Esben Norby <norby@openbsd.org> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20/* LDP protocol definitions */ 21 22#ifndef _LDP_H_ 23#define _LDP_H_ 24 25#include <netinet/in.h> 26 27/* misc */ 28#define LDP_VERSION 1 29#define LDP_PORT 646 30#define AllRouters "224.0.0.2" 31 32#define LDP_MAX_LEN 4096 33 34#define LINK_DFLT_HOLDTIME 15 35#define TARGETED_DFLT_HOLDTIME 45 36#define MIN_HOLDTIME 3 37#define MAX_HOLDTIME 0xffff 38#define INFINITE_HOLDTIME 0xffff 39 40#define DEFAULT_KEEPALIVE 180 41#define MIN_KEEPALIVE 3 42#define MAX_KEEPALIVE 0xffff 43#define KEEPALIVE_PER_PERIOD 3 44 45#define DEFAULT_HELLO_INTERVAL 5 46#define MIN_HELLO_INTERVAL 1 47#define MAX_HELLO_INTERVAL 0xffff 48 49#define INIT_DELAY_TMR 15 50#define MAX_DELAY_TMR 120 51 52#define MIN_PWID_ID 1 53#define MAX_PWID_ID 0xffffffff 54 55#define DEFAULT_L2VPN_MTU 1500 56#define MIN_L2VPN_MTU 512 57#define MAX_L2VPN_MTU 0xffff 58 59/* LDP message types */ 60#define MSG_TYPE_NOTIFICATION 0x0001 61#define MSG_TYPE_HELLO 0x0100 62#define MSG_TYPE_INIT 0x0200 63#define MSG_TYPE_KEEPALIVE 0x0201 64#define MSG_TYPE_ADDR 0x0300 65#define MSG_TYPE_ADDRWITHDRAW 0x0301 66#define MSG_TYPE_LABELMAPPING 0x0400 67#define MSG_TYPE_LABELREQUEST 0x0401 68#define MSG_TYPE_LABELWITHDRAW 0x0402 69#define MSG_TYPE_LABELRELEASE 0x0403 70#define MSG_TYPE_LABELABORTREQ 0x0404 71 72/* LDP TLV types */ 73#define TLV_TYPE_FEC 0x0100 74#define TLV_TYPE_ADDRLIST 0x0101 75#define TLV_TYPE_HOPCOUNT 0x0103 76#define TLV_TYPE_PATHVECTOR 0x0104 77#define TLV_TYPE_GENERICLABEL 0x0200 78#define TLV_TYPE_ATMLABEL 0x0201 79#define TLV_TYPE_FRLABEL 0x0202 80#define TLV_TYPE_STATUS 0x0300 81#define TLV_TYPE_EXTSTATUS 0x0301 82#define TLV_TYPE_RETURNEDPDU 0x0302 83#define TLV_TYPE_RETURNEDMSG 0x0303 84#define TLV_TYPE_COMMONHELLO 0x0400 85#define TLV_TYPE_IPV4TRANSADDR 0x0401 86#define TLV_TYPE_CONFIG 0x0402 87#define TLV_TYPE_IPV6TRANSADDR 0x0403 88#define TLV_TYPE_COMMONSESSION 0x0500 89#define TLV_TYPE_ATMSESSIONPAR 0x0501 90#define TLV_TYPE_FRSESSION 0x0502 91#define TLV_TYPE_LABELREQUEST 0x0600 92/* RFC 4447 */ 93#define TLV_TYPE_PW_STATUS 0x096A 94#define TLV_TYPE_PW_IF_PARAM 0x096B 95#define TLV_TYPE_PW_GROUP_ID 0x096C 96 97/* LDP header */ 98struct ldp_hdr { 99 u_int16_t version; 100 u_int16_t length; 101 u_int32_t lsr_id; 102 u_int16_t lspace_id; 103} __packed; 104 105#define LDP_HDR_SIZE 10 /* actual size of the LDP header */ 106#define LDP_HDR_PDU_LEN 6 /* minimum "PDU Length" */ 107#define LDP_HDR_DEAD_LEN 4 108 109/* TLV record */ 110struct tlv { 111 u_int16_t type; 112 u_int16_t length; 113}; 114#define TLV_HDR_LEN 4 115 116struct ldp_msg { 117 u_int16_t type; 118 u_int16_t length; 119 u_int32_t msgid; 120 /* Mandatory Parameters */ 121 /* Optional Parameters */ 122} __packed; 123 124#define LDP_MSG_SIZE 8 /* minimum size of LDP message */ 125#define LDP_MSG_LEN 4 /* minimum "Message Length" */ 126#define LDP_MSG_DEAD_LEN 4 127 128#define UNKNOWN_FLAG 0x8000 129#define FORWARD_FLAG 0xc000 130 131struct hello_prms_tlv { 132 u_int16_t type; 133 u_int16_t length; 134 u_int16_t holdtime; 135 u_int16_t flags; 136}; 137 138#define TARGETED_HELLO 0x8000 139#define REQUEST_TARG_HELLO 0x4000 140 141struct hello_prms_opt4_tlv { 142 u_int16_t type; 143 u_int16_t length; 144 u_int32_t value; 145}; 146 147 148#define S_SUCCESS 0x00000000 149#define S_BAD_LDP_ID 0x80000001 150#define S_BAD_PROTO_VER 0x80000002 151#define S_BAD_PDU_LEN 0x80000003 152#define S_UNKNOWN_MSG 0x00000004 153#define S_BAD_MSG_LEN 0x80000005 154#define S_UNKNOWN_TLV 0x00000006 155#define S_BAD_TLV_LEN 0x80000007 156#define S_BAD_TLV_VAL 0x80000008 157#define S_HOLDTIME_EXP 0x80000009 158#define S_SHUTDOWN 0x8000000A 159#define S_LOOP_DETECTED 0x0000000B 160#define S_UNKNOWN_FEC 0x0000000C 161#define S_NO_ROUTE 0x0000000D 162#define S_NO_LABEL_RES 0x0000000E 163#define S_AVAILABLE 0x0000000F 164#define S_NO_HELLO 0x80000010 165#define S_PARM_ADV_MODE 0x80000011 166#define S_MAX_PDU_LEN 0x80000012 167#define S_PARM_L_RANGE 0x80000013 168#define S_KEEPALIVE_TMR 0x80000014 169#define S_LAB_REQ_ABRT 0x00000015 170#define S_MISS_MSG 0x00000016 171#define S_UNSUP_ADDR 0x00000017 172#define S_KEEPALIVE_BAD 0x80000018 173#define S_INTERN_ERR 0x80000019 174/* RFC 4447 */ 175#define S_ILLEGAL_CBIT 0x00000024 176#define S_WRONG_CBIT 0x00000025 177#define S_INCPT_BITRATE 0x00000026 178#define S_CEP_MISCONF 0x00000027 179#define S_PW_STATUS 0x00000028 180#define S_UNASSIGN_TAI 0x00000029 181#define S_MISCONF_ERR 0x0000002A 182#define S_WITHDRAW_MTHD 0x0000002B 183 184struct sess_prms_tlv { 185 u_int16_t type; 186 u_int16_t length; 187 u_int16_t proto_version; 188 u_int16_t keepalive_time; 189 u_int8_t reserved; 190 u_int8_t pvlim; 191 u_int16_t max_pdu_len; 192 u_int32_t lsr_id; 193 u_int16_t lspace_id; 194} __packed; 195 196#define SESS_PRMS_SIZE 18 197 198struct status_tlv { 199 u_int16_t type; 200 u_int16_t length; 201 u_int32_t status_code; 202 u_int32_t msg_id; 203 u_int16_t msg_type; 204} __packed; 205 206#define STATUS_SIZE 14 207#define STATUS_TLV_LEN 10 208#define STATUS_FATAL 0x80000000 209 210#define AF_IPV4 0x1 211#define AF_IPV6 0x2 212 213struct address_list_tlv { 214 u_int16_t type; 215 u_int16_t length; 216 u_int16_t family; 217 /* address entries */ 218} __packed; 219 220#define FEC_ELM_WCARD_LEN 1 221#define FEC_ELM_PREFIX_MIN_LEN 4 222#define FEC_PWID_ELM_MIN_LEN 8 223 224#define MAP_TYPE_WILDCARD 0x01 225#define MAP_TYPE_PREFIX 0x02 226#define MAP_TYPE_PWID 0x80 227#define MAP_TYPE_GENPWID 0x81 228 229#define CONTROL_WORD_FLAG 0x8000 230#define PW_TYPE_ETHERNET_TAGGED 0x0004 231#define PW_TYPE_ETHERNET 0x0005 232#define DEFAULT_PW_TYPE PW_TYPE_ETHERNET 233 234/* RFC 4447 Sub-TLV record */ 235struct subtlv { 236 u_int8_t type; 237 u_int8_t length; 238}; 239#define SUBTLV_HDR_LEN 2 240 241#define SUBTLV_IFMTU 0x01 242#define SUBTLV_VLANID 0x06 243 244#define FEC_SUBTLV_IFMTU_LEN 4 245#define FEC_SUBTLV_VLANID_LEN 4 246 247struct label_tlv { 248 u_int16_t type; 249 u_int16_t length; 250 u_int32_t label; 251}; 252 253#define LABEL_TLV_LEN 8 254 255struct reqid_tlv { 256 u_int16_t type; 257 u_int16_t length; 258 u_int32_t reqid; 259}; 260 261#define REQID_TLV_LEN 8 262 263struct pw_status_tlv { 264 u_int16_t type; 265 u_int16_t length; 266 u_int32_t value; 267}; 268 269#define PW_STATUS_TLV_LEN 8 270 271#define PW_FORWARDING 0 272#define PW_NOT_FORWARDING (1 << 0) 273#define PW_LOCAL_RX_FAULT (1 << 1) 274#define PW_LOCAL_TX_FAULT (1 << 2) 275#define PW_PSN_RX_FAULT (1 << 3) 276#define PW_PSN_TX_FAULT (1 << 4) 277 278#define NO_LABEL UINT_MAX 279 280#endif /* !_LDP_H_ */ 281