ldp.h revision 1.27
1/* $OpenBSD: ldp.h,v 1.27 2016/05/23 18:58:48 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 LDP_MAX_LEN 4096 31 32/* All Routers on this Subnet group multicast addresses */ 33#define AllRouters_v4 "224.0.0.2" 34#define AllRouters_v6 "ff02::2" 35 36#define LINK_DFLT_HOLDTIME 15 37#define TARGETED_DFLT_HOLDTIME 45 38#define MIN_HOLDTIME 3 39#define MAX_HOLDTIME 0xffff 40#define INFINITE_HOLDTIME 0xffff 41 42#define DEFAULT_KEEPALIVE 180 43#define MIN_KEEPALIVE 3 44#define MAX_KEEPALIVE 0xffff 45#define KEEPALIVE_PER_PERIOD 3 46 47#define DEFAULT_HELLO_INTERVAL 5 48#define MIN_HELLO_INTERVAL 1 49#define MAX_HELLO_INTERVAL 0xffff 50 51#define INIT_DELAY_TMR 15 52#define MAX_DELAY_TMR 120 53 54#define MIN_PWID_ID 1 55#define MAX_PWID_ID 0xffffffff 56 57#define DEFAULT_L2VPN_MTU 1500 58#define MIN_L2VPN_MTU 512 59#define MAX_L2VPN_MTU 0xffff 60 61/* LDP message types */ 62#define MSG_TYPE_NOTIFICATION 0x0001 63#define MSG_TYPE_HELLO 0x0100 64#define MSG_TYPE_INIT 0x0200 65#define MSG_TYPE_KEEPALIVE 0x0201 66#define MSG_TYPE_ADDR 0x0300 67#define MSG_TYPE_ADDRWITHDRAW 0x0301 68#define MSG_TYPE_LABELMAPPING 0x0400 69#define MSG_TYPE_LABELREQUEST 0x0401 70#define MSG_TYPE_LABELWITHDRAW 0x0402 71#define MSG_TYPE_LABELRELEASE 0x0403 72#define MSG_TYPE_LABELABORTREQ 0x0404 73 74/* LDP TLV types */ 75#define TLV_TYPE_FEC 0x0100 76#define TLV_TYPE_ADDRLIST 0x0101 77#define TLV_TYPE_HOPCOUNT 0x0103 78#define TLV_TYPE_PATHVECTOR 0x0104 79#define TLV_TYPE_GENERICLABEL 0x0200 80#define TLV_TYPE_ATMLABEL 0x0201 81#define TLV_TYPE_FRLABEL 0x0202 82#define TLV_TYPE_STATUS 0x0300 83#define TLV_TYPE_EXTSTATUS 0x0301 84#define TLV_TYPE_RETURNEDPDU 0x0302 85#define TLV_TYPE_RETURNEDMSG 0x0303 86#define TLV_TYPE_COMMONHELLO 0x0400 87#define TLV_TYPE_IPV4TRANSADDR 0x0401 88#define TLV_TYPE_CONFIG 0x0402 89#define TLV_TYPE_IPV6TRANSADDR 0x0403 90#define TLV_TYPE_COMMONSESSION 0x0500 91#define TLV_TYPE_ATMSESSIONPAR 0x0501 92#define TLV_TYPE_FRSESSION 0x0502 93#define TLV_TYPE_LABELREQUEST 0x0600 94/* RFC 4447 */ 95#define TLV_TYPE_PW_STATUS 0x096A 96#define TLV_TYPE_PW_IF_PARAM 0x096B 97#define TLV_TYPE_PW_GROUP_ID 0x096C 98/* RFC 7552 */ 99#define TLV_TYPE_DUALSTACK 0x8701 100 101/* LDP header */ 102struct ldp_hdr { 103 uint16_t version; 104 uint16_t length; 105 uint32_t lsr_id; 106 uint16_t lspace_id; 107} __packed; 108 109#define LDP_HDR_SIZE 10 /* actual size of the LDP header */ 110#define LDP_HDR_PDU_LEN 6 /* minimum "PDU Length" */ 111#define LDP_HDR_DEAD_LEN 4 112 113/* TLV record */ 114struct tlv { 115 uint16_t type; 116 uint16_t length; 117}; 118#define TLV_HDR_LEN 4 119 120struct ldp_msg { 121 uint16_t type; 122 uint16_t length; 123 uint32_t msgid; 124 /* Mandatory Parameters */ 125 /* Optional Parameters */ 126} __packed; 127 128#define LDP_MSG_SIZE 8 /* minimum size of LDP message */ 129#define LDP_MSG_LEN 4 /* minimum "Message Length" */ 130#define LDP_MSG_DEAD_LEN 4 131 132#define UNKNOWN_FLAG 0x8000 133#define FORWARD_FLAG 0xc000 134 135struct hello_prms_tlv { 136 uint16_t type; 137 uint16_t length; 138 uint16_t holdtime; 139 uint16_t flags; 140}; 141 142#define TARGETED_HELLO 0x8000 143#define REQUEST_TARG_HELLO 0x4000 144 145struct hello_prms_opt4_tlv { 146 uint16_t type; 147 uint16_t length; 148 uint32_t value; 149}; 150 151struct hello_prms_opt16_tlv { 152 uint16_t type; 153 uint16_t length; 154 uint8_t value[16]; 155}; 156 157#define DUAL_STACK_LDPOV4 4 158#define DUAL_STACK_LDPOV6 6 159 160#define F_HELLO_TLV_RCVD_ADDR 0x01 161#define F_HELLO_TLV_RCVD_CONF 0x02 162#define F_HELLO_TLV_RCVD_DS 0x04 163 164#define S_SUCCESS 0x00000000 165#define S_BAD_LDP_ID 0x80000001 166#define S_BAD_PROTO_VER 0x80000002 167#define S_BAD_PDU_LEN 0x80000003 168#define S_UNKNOWN_MSG 0x00000004 169#define S_BAD_MSG_LEN 0x80000005 170#define S_UNKNOWN_TLV 0x00000006 171#define S_BAD_TLV_LEN 0x80000007 172#define S_BAD_TLV_VAL 0x80000008 173#define S_HOLDTIME_EXP 0x80000009 174#define S_SHUTDOWN 0x8000000A 175#define S_LOOP_DETECTED 0x0000000B 176#define S_UNKNOWN_FEC 0x0000000C 177#define S_NO_ROUTE 0x0000000D 178#define S_NO_LABEL_RES 0x0000000E 179#define S_AVAILABLE 0x0000000F 180#define S_NO_HELLO 0x80000010 181#define S_PARM_ADV_MODE 0x80000011 182#define S_MAX_PDU_LEN 0x80000012 183#define S_PARM_L_RANGE 0x80000013 184#define S_KEEPALIVE_TMR 0x80000014 185#define S_LAB_REQ_ABRT 0x00000015 186#define S_MISS_MSG 0x00000016 187#define S_UNSUP_ADDR 0x00000017 188#define S_KEEPALIVE_BAD 0x80000018 189#define S_INTERN_ERR 0x80000019 190/* RFC 4447 */ 191#define S_ILLEGAL_CBIT 0x00000024 192#define S_WRONG_CBIT 0x00000025 193#define S_INCPT_BITRATE 0x00000026 194#define S_CEP_MISCONF 0x00000027 195#define S_PW_STATUS 0x00000028 196#define S_UNASSIGN_TAI 0x00000029 197#define S_MISCONF_ERR 0x0000002A 198#define S_WITHDRAW_MTHD 0x0000002B 199/* RFC 7552 */ 200#define S_TRANS_MISMTCH 0x80000032 201#define S_DS_NONCMPLNCE 0x80000033 202 203struct sess_prms_tlv { 204 uint16_t type; 205 uint16_t length; 206 uint16_t proto_version; 207 uint16_t keepalive_time; 208 uint8_t reserved; 209 uint8_t pvlim; 210 uint16_t max_pdu_len; 211 uint32_t lsr_id; 212 uint16_t lspace_id; 213} __packed; 214 215#define SESS_PRMS_SIZE 18 216 217struct status_tlv { 218 uint16_t type; 219 uint16_t length; 220 uint32_t status_code; 221 uint32_t msg_id; 222 uint16_t msg_type; 223} __packed; 224 225#define STATUS_SIZE 14 226#define STATUS_TLV_LEN 10 227#define STATUS_FATAL 0x80000000 228 229#define AF_IPV4 0x1 230#define AF_IPV6 0x2 231 232struct address_list_tlv { 233 uint16_t type; 234 uint16_t length; 235 uint16_t family; 236 /* address entries */ 237} __packed; 238 239#define FEC_ELM_WCARD_LEN 1 240#define FEC_ELM_PREFIX_MIN_LEN 4 241#define FEC_PWID_ELM_MIN_LEN 8 242 243#define MAP_TYPE_WILDCARD 0x01 244#define MAP_TYPE_PREFIX 0x02 245#define MAP_TYPE_PWID 0x80 246#define MAP_TYPE_GENPWID 0x81 247 248#define CONTROL_WORD_FLAG 0x8000 249#define PW_TYPE_ETHERNET_TAGGED 0x0004 250#define PW_TYPE_ETHERNET 0x0005 251#define DEFAULT_PW_TYPE PW_TYPE_ETHERNET 252 253/* RFC 4447 Sub-TLV record */ 254struct subtlv { 255 uint8_t type; 256 uint8_t length; 257}; 258#define SUBTLV_HDR_LEN 2 259 260#define SUBTLV_IFMTU 0x01 261#define SUBTLV_VLANID 0x06 262 263#define FEC_SUBTLV_IFMTU_LEN 4 264#define FEC_SUBTLV_VLANID_LEN 4 265 266struct label_tlv { 267 uint16_t type; 268 uint16_t length; 269 uint32_t label; 270}; 271 272#define LABEL_TLV_LEN 8 273 274struct reqid_tlv { 275 uint16_t type; 276 uint16_t length; 277 uint32_t reqid; 278}; 279 280#define REQID_TLV_LEN 8 281 282struct pw_status_tlv { 283 uint16_t type; 284 uint16_t length; 285 uint32_t value; 286}; 287 288#define PW_STATUS_TLV_LEN 8 289 290#define PW_FORWARDING 0 291#define PW_NOT_FORWARDING (1 << 0) 292#define PW_LOCAL_RX_FAULT (1 << 1) 293#define PW_LOCAL_TX_FAULT (1 << 2) 294#define PW_PSN_RX_FAULT (1 << 3) 295#define PW_PSN_TX_FAULT (1 << 4) 296 297#define NO_LABEL UINT_MAX 298 299#endif /* !_LDP_H_ */ 300