ldp.h revision 1.31
1/* $OpenBSD: ldp.h,v 1.31 2016/07/01 23:18:24 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 48#define DEFAULT_HELLO_INTERVAL 5 49#define MIN_HELLO_INTERVAL 1 50#define MAX_HELLO_INTERVAL 0xffff 51 52#define INIT_DELAY_TMR 15 53#define MAX_DELAY_TMR 120 54 55#define MIN_PWID_ID 1 56#define MAX_PWID_ID 0xffffffff 57 58#define DEFAULT_L2VPN_MTU 1500 59#define MIN_L2VPN_MTU 512 60#define MAX_L2VPN_MTU 0xffff 61 62/* LDP message types */ 63#define MSG_TYPE_NOTIFICATION 0x0001 64#define MSG_TYPE_HELLO 0x0100 65#define MSG_TYPE_INIT 0x0200 66#define MSG_TYPE_KEEPALIVE 0x0201 67#define MSG_TYPE_ADDR 0x0300 68#define MSG_TYPE_ADDRWITHDRAW 0x0301 69#define MSG_TYPE_LABELMAPPING 0x0400 70#define MSG_TYPE_LABELREQUEST 0x0401 71#define MSG_TYPE_LABELWITHDRAW 0x0402 72#define MSG_TYPE_LABELRELEASE 0x0403 73#define MSG_TYPE_LABELABORTREQ 0x0404 74 75/* LDP TLV types */ 76#define TLV_TYPE_FEC 0x0100 77#define TLV_TYPE_ADDRLIST 0x0101 78#define TLV_TYPE_HOPCOUNT 0x0103 79#define TLV_TYPE_PATHVECTOR 0x0104 80#define TLV_TYPE_GENERICLABEL 0x0200 81#define TLV_TYPE_ATMLABEL 0x0201 82#define TLV_TYPE_FRLABEL 0x0202 83#define TLV_TYPE_STATUS 0x0300 84#define TLV_TYPE_EXTSTATUS 0x0301 85#define TLV_TYPE_RETURNEDPDU 0x0302 86#define TLV_TYPE_RETURNEDMSG 0x0303 87#define TLV_TYPE_COMMONHELLO 0x0400 88#define TLV_TYPE_IPV4TRANSADDR 0x0401 89#define TLV_TYPE_CONFIG 0x0402 90#define TLV_TYPE_IPV6TRANSADDR 0x0403 91#define TLV_TYPE_COMMONSESSION 0x0500 92#define TLV_TYPE_ATMSESSIONPAR 0x0501 93#define TLV_TYPE_FRSESSION 0x0502 94#define TLV_TYPE_LABELREQUEST 0x0600 95/* RFC 4447 */ 96#define TLV_TYPE_PW_STATUS 0x096A 97#define TLV_TYPE_PW_IF_PARAM 0x096B 98#define TLV_TYPE_PW_GROUP_ID 0x096C 99/* RFC 7552 */ 100#define TLV_TYPE_DUALSTACK 0x8701 101 102/* LDP header */ 103struct ldp_hdr { 104 uint16_t version; 105 uint16_t length; 106 uint32_t lsr_id; 107 uint16_t lspace_id; 108} __packed; 109 110#define LDP_HDR_SIZE 10 /* actual size of the LDP header */ 111#define LDP_HDR_PDU_LEN 6 /* minimum "PDU Length" */ 112#define LDP_HDR_DEAD_LEN 4 113 114/* TLV record */ 115struct tlv { 116 uint16_t type; 117 uint16_t length; 118}; 119#define TLV_HDR_LEN 4 120 121struct ldp_msg { 122 uint16_t type; 123 uint16_t length; 124 uint32_t msgid; 125 /* Mandatory Parameters */ 126 /* Optional Parameters */ 127} __packed; 128 129#define LDP_MSG_SIZE 8 /* minimum size of LDP message */ 130#define LDP_MSG_LEN 4 /* minimum "Message Length" */ 131#define LDP_MSG_DEAD_LEN 4 132 133#define UNKNOWN_FLAG 0x8000 134#define FORWARD_FLAG 0xc000 135 136struct hello_prms_tlv { 137 uint16_t type; 138 uint16_t length; 139 uint16_t holdtime; 140 uint16_t flags; 141}; 142 143#define F_HELLO_TARGETED 0x8000 144#define F_HELLO_REQ_TARG 0x4000 145#define F_HELLO_GTSM 0x2000 146 147struct hello_prms_opt4_tlv { 148 uint16_t type; 149 uint16_t length; 150 uint32_t value; 151}; 152 153struct 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 205struct 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 219struct status_tlv { 220 uint16_t type; 221 uint16_t length; 222 uint32_t status_code; 223 uint32_t msg_id; 224 uint16_t msg_type; 225} __packed; 226 227#define STATUS_SIZE 14 228#define STATUS_TLV_LEN 10 229#define STATUS_FATAL 0x80000000 230 231#define AF_IPV4 0x1 232#define AF_IPV6 0x2 233 234struct address_list_tlv { 235 uint16_t type; 236 uint16_t length; 237 uint16_t family; 238 /* address entries */ 239} __packed; 240 241#define FEC_ELM_WCARD_LEN 1 242#define FEC_ELM_PREFIX_MIN_LEN 4 243#define FEC_PWID_ELM_MIN_LEN 8 244 245#define MAP_TYPE_WILDCARD 0x01 246#define MAP_TYPE_PREFIX 0x02 247#define MAP_TYPE_PWID 0x80 248#define MAP_TYPE_GENPWID 0x81 249 250#define CONTROL_WORD_FLAG 0x8000 251#define PW_TYPE_ETHERNET_TAGGED 0x0004 252#define PW_TYPE_ETHERNET 0x0005 253#define DEFAULT_PW_TYPE PW_TYPE_ETHERNET 254 255/* RFC 4447 Sub-TLV record */ 256struct subtlv { 257 uint8_t type; 258 uint8_t length; 259}; 260#define SUBTLV_HDR_LEN 2 261 262#define SUBTLV_IFMTU 0x01 263#define SUBTLV_VLANID 0x06 264 265#define FEC_SUBTLV_IFMTU_LEN 4 266#define FEC_SUBTLV_VLANID_LEN 4 267 268struct label_tlv { 269 uint16_t type; 270 uint16_t length; 271 uint32_t label; 272}; 273 274#define LABEL_TLV_LEN 8 275 276struct reqid_tlv { 277 uint16_t type; 278 uint16_t length; 279 uint32_t reqid; 280}; 281 282#define REQID_TLV_LEN 8 283 284struct pw_status_tlv { 285 uint16_t type; 286 uint16_t length; 287 uint32_t value; 288}; 289 290#define PW_STATUS_TLV_LEN 8 291 292#define PW_FORWARDING 0 293#define PW_NOT_FORWARDING (1 << 0) 294#define PW_LOCAL_RX_FAULT (1 << 1) 295#define PW_LOCAL_TX_FAULT (1 << 2) 296#define PW_PSN_RX_FAULT (1 << 3) 297#define PW_PSN_TX_FAULT (1 << 4) 298 299#define NO_LABEL UINT_MAX 300 301#endif /* !_LDP_H_ */ 302