ldp.h revision 1.4
1/* $OpenBSD: ldp.h,v 1.4 2010/04/15 14:55:12 claudio 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 INFINITE_TMR (-1) 35#define LINK_DFLT_HOLDTIME 15 36#define TARGETED_DFLT_HOLDTIME 45 37 38#define DEFAULT_HOLDTIME 15 39#define MIN_HOLDTIME 1 40#define MAX_HOLDTIME 0xffff 41 42#define DEFAULT_KEEPALIVE 180 43#define MIN_KEEPALIVE 1 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 /* XXX */ 50 51#define INIT_DELAY_TMR 15 52#define DEFAULT_NBR_TMOUT 86400 /* 24 hours */ 53 54/* LDP message types */ 55#define MSG_TYPE_NOTIFICATION 0x0001 56#define MSG_TYPE_HELLO 0x0100 57#define MSG_TYPE_INIT 0x0200 58#define MSG_TYPE_KEEPALIVE 0x0201 59#define MSG_TYPE_ADDR 0x0300 60#define MSG_TYPE_ADDRWITHDRAW 0x0301 61#define MSG_TYPE_LABELMAPPING 0x0400 62#define MSG_TYPE_LABELREQUEST 0x0401 63#define MSG_TYPE_LABELWITHDRAW 0x0402 64#define MSG_TYPE_LABELRELEASE 0x0403 65#define MSG_TYPE_LABELABORTREQ 0x0404 66 67/* LDP TLV types */ 68#define TLV_TYPE_FEC 0x0100 69#define TLV_TYPE_ADDRLIST 0x0101 70#define TLV_TYPE_HOPCOUNT 0x0103 71#define TLV_TYPE_PATHVECTOR 0x0104 72#define TLV_TYPE_GENERICLABEL 0x0200 73#define TLV_TYPE_ATMLABEL 0x0201 74#define TLV_TYPE_FRLABEL 0x0202 75#define TLV_TYPE_STATUS 0x0300 76#define TLV_TYPE_EXTSTATUS 0x0301 77#define TLV_TYPE_RETURNEDPDU 0x0302 78#define TLV_TYPE_RETURNEDMSG 0x0303 79#define TLV_TYPE_COMMONHELLO 0x0400 80#define TLV_TYPE_IPV4TRANSADDR 0x0401 81#define TLV_TYPE_CONFIG 0x0402 82#define TLV_TYPE_IPV6TRANSADDR 0x0403 83#define TLV_TYPE_COMMONSESSION 0x0500 84#define TLV_TYPE_ATMSESSIONPAR 0x0501 85#define TLV_TYPE_FRSESSION 0x0502 86#define TLV_TYPE_LABELREQUEST 0x0600 87 88/* LDP header */ 89struct ldp_hdr { 90 u_int16_t version; 91 u_int16_t length; 92 u_int32_t lsr_id; 93 u_int16_t lspace_id; 94} __packed; 95 96#define LDP_HDR_SIZE 10 97#define INFINITE_HOLDTIME 0xffff 98 99/* TLV record */ 100struct ldp_msg { 101 u_int16_t type; 102 u_int16_t length; 103 u_int32_t msgid; 104 /* Mandatory Parameters */ 105 /* Optional Parameters */ 106}; 107 108#define LDP_MSG_LEN 8 109#define TLV_HDR_LEN 4 110 111#define UNKNOWN_FLAGS_MASK 0xc000 112#define UNKNOWN_FLAG 0x8000 113#define FORWARD_FLAG 0xc000 114 115#define TARGETED_HELLO 0x8000 116#define REQUEST_TARG_HELLO 0x4000 117 118struct hello_prms_tlv { 119 u_int16_t type; 120 u_int16_t length; 121 u_int16_t holdtime; 122 u_int16_t reserved; 123}; 124 125#define S_SUCCESS 0x00000000 126#define S_BAD_LDP_ID 0x80000001 127#define S_BAD_PROTO_VER 0x80000002 128#define S_BAD_PDU_LEN 0x80000003 129#define S_UNKNOWN_MSG 0x00000004 130#define S_BAD_MSG_LEN 0x80000005 131#define S_UNKNOWN_TLV 0x00000006 132#define S_BAD_TLV_LEN 0x80000007 133#define S_BAD_TLV_VAL 0x80000008 134#define S_HOLDTIME_EXP 0x80000009 135#define S_SHUTDOWN 0x8000000A 136#define S_LOOP_DETECTED 0x0000000B 137#define S_UNKNOWN_FEC 0x0000000C 138#define S_NO_ROUTE 0x0000000D 139#define S_NO_LABEL_RES 0x0000000E 140#define S_AVAILABLE 0x0000000F 141#define S_NO_HELLO 0x80000010 142#define S_PARM_ADV_MODE 0x80000011 143#define S_MAX_PDU_LEN 0x80000012 144#define S_PARM_L_RANGE 0x80000013 145#define S_KEEPALIVE_TMR 0x80000014 146#define S_LAB_REQ_ABRT 0x00000015 147#define S_MISS_MSG 0x00000016 148#define S_UNSUP_ADDR 0x00000017 149#define S_KEEPALIVE_BAD 0x80000018 150#define S_INTERN_ERR 0x80000019 151 152struct sess_prms_tlv { 153 u_int16_t type; 154 u_int16_t length; 155 u_int16_t proto_version; 156 u_int16_t keepalive_time; 157 u_int8_t reserved; 158 u_int8_t pvlim; 159 u_int16_t max_pdu_len; 160 u_int32_t lsr_id; 161 u_int16_t lspace_id; 162}; 163 164#define SESS_PRMS_SIZE 18 165 166struct status_tlv { 167 u_int16_t type; 168 u_int16_t length; 169 u_int32_t status_code; 170 u_int32_t msg_id; 171 u_int16_t msg_type; 172}; 173 174#define STATUS_SIZE 14 175#define STATUS_TLV_LEN 10 176#define STATUS_FATAL 0x80000000 177 178struct address_list_tlv { 179 u_int16_t type; 180 u_int16_t length; 181 u_int16_t family; 182 /* address entries */ 183}; 184 185#define BASIC_LABEL_MAP_LEN 24 186 187#define ADDR_IPV4 0x1 188#define ADDR_IPV6 0x2 189 190struct fec_tlv { 191 u_int16_t type; 192 u_int16_t length; 193 /* fec elm entries */ 194}; 195 196/* This struct is badly aligned so use two 32 bit fields */ 197struct fec_elm { 198 u_int32_t hdr; 199 u_int32_t addr; 200}; 201 202#define FEC_ELM_MIN_LEN 4 203 204#define FEC_WILDCARD 0x01 205#define FEC_PREFIX 0x02 206#define FEC_ADDRESS 0x03 207 208#define FEC_IPV4 0x0001 209 210struct label_tlv { 211 u_int16_t type; 212 u_int16_t length; 213 u_int32_t label; 214}; 215 216#define LABEL_TLV_LEN 8 217 218struct hello_opt_parms_tlv { 219 u_int16_t type; 220 u_int16_t length; 221 u_int32_t value; 222}; 223 224#define NO_LABEL UINT_MAX 225 226#endif /* !_LDP_H_ */ 227