1 /* $OpenBSD: ldp.h,v 1.16 2013/10/17 17:52:21 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 1 37 #define MAX_HOLDTIME 0xffff 38 #define INFINITE_HOLDTIME 0xffff 39 40 #define DEFAULT_KEEPALIVE 180 41 #define MIN_KEEPALIVE 1 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 /* LDP message types */ 53 #define MSG_TYPE_NOTIFICATION 0x0001 54 #define MSG_TYPE_HELLO 0x0100 55 #define MSG_TYPE_INIT 0x0200 56 #define MSG_TYPE_KEEPALIVE 0x0201 57 #define MSG_TYPE_ADDR 0x0300 58 #define MSG_TYPE_ADDRWITHDRAW 0x0301 59 #define MSG_TYPE_LABELMAPPING 0x0400 60 #define MSG_TYPE_LABELREQUEST 0x0401 61 #define MSG_TYPE_LABELWITHDRAW 0x0402 62 #define MSG_TYPE_LABELRELEASE 0x0403 63 #define MSG_TYPE_LABELABORTREQ 0x0404 64 65 /* LDP TLV types */ 66 #define TLV_TYPE_FEC 0x0100 67 #define TLV_TYPE_ADDRLIST 0x0101 68 #define TLV_TYPE_HOPCOUNT 0x0103 69 #define TLV_TYPE_PATHVECTOR 0x0104 70 #define TLV_TYPE_GENERICLABEL 0x0200 71 #define TLV_TYPE_ATMLABEL 0x0201 72 #define TLV_TYPE_FRLABEL 0x0202 73 #define TLV_TYPE_STATUS 0x0300 74 #define TLV_TYPE_EXTSTATUS 0x0301 75 #define TLV_TYPE_RETURNEDPDU 0x0302 76 #define TLV_TYPE_RETURNEDMSG 0x0303 77 #define TLV_TYPE_COMMONHELLO 0x0400 78 #define TLV_TYPE_IPV4TRANSADDR 0x0401 79 #define TLV_TYPE_CONFIG 0x0402 80 #define TLV_TYPE_IPV6TRANSADDR 0x0403 81 #define TLV_TYPE_COMMONSESSION 0x0500 82 #define TLV_TYPE_ATMSESSIONPAR 0x0501 83 #define TLV_TYPE_FRSESSION 0x0502 84 #define TLV_TYPE_LABELREQUEST 0x0600 85 86 /* LDP header */ 87 struct ldp_hdr { 88 u_int16_t version; 89 u_int16_t length; 90 u_int32_t lsr_id; 91 u_int16_t lspace_id; 92 } __packed; 93 94 #define LDP_HDR_SIZE 10 95 #define LDP_HDR_PDU_LEN 6 96 97 /* TLV record */ 98 struct tlv { 99 u_int16_t type; 100 u_int16_t length; 101 }; 102 #define TLV_HDR_LEN 4 103 104 struct ldp_msg { 105 u_int16_t type; 106 u_int16_t length; 107 u_int32_t msgid; 108 /* Mandatory Parameters */ 109 /* Optional Parameters */ 110 } __packed; 111 112 #define LDP_MSG_LEN 8 113 114 #define UNKNOWN_FLAG 0x8000 115 #define FORWARD_FLAG 0xc000 116 117 #define TARGETED_HELLO 0x8000 118 #define REQUEST_TARG_HELLO 0x4000 119 120 struct hello_prms_tlv { 121 u_int16_t type; 122 u_int16_t length; 123 u_int16_t holdtime; 124 u_int16_t flags; 125 }; 126 127 struct hello_prms_opt4_tlv { 128 u_int16_t type; 129 u_int16_t length; 130 u_int32_t value; 131 }; 132 133 #define HELLO_PRMS_SIZE 8 134 135 #define S_SUCCESS 0x00000000 136 #define S_BAD_LDP_ID 0x80000001 137 #define S_BAD_PROTO_VER 0x80000002 138 #define S_BAD_PDU_LEN 0x80000003 139 #define S_UNKNOWN_MSG 0x00000004 140 #define S_BAD_MSG_LEN 0x80000005 141 #define S_UNKNOWN_TLV 0x00000006 142 #define S_BAD_TLV_LEN 0x80000007 143 #define S_BAD_TLV_VAL 0x80000008 144 #define S_HOLDTIME_EXP 0x80000009 145 #define S_SHUTDOWN 0x8000000A 146 #define S_LOOP_DETECTED 0x0000000B 147 #define S_UNKNOWN_FEC 0x0000000C 148 #define S_NO_ROUTE 0x0000000D 149 #define S_NO_LABEL_RES 0x0000000E 150 #define S_AVAILABLE 0x0000000F 151 #define S_NO_HELLO 0x80000010 152 #define S_PARM_ADV_MODE 0x80000011 153 #define S_MAX_PDU_LEN 0x80000012 154 #define S_PARM_L_RANGE 0x80000013 155 #define S_KEEPALIVE_TMR 0x80000014 156 #define S_LAB_REQ_ABRT 0x00000015 157 #define S_MISS_MSG 0x00000016 158 #define S_UNSUP_ADDR 0x00000017 159 #define S_KEEPALIVE_BAD 0x80000018 160 #define S_INTERN_ERR 0x80000019 161 162 struct sess_prms_tlv { 163 u_int16_t type; 164 u_int16_t length; 165 u_int16_t proto_version; 166 u_int16_t keepalive_time; 167 u_int8_t reserved; 168 u_int8_t pvlim; 169 u_int16_t max_pdu_len; 170 u_int32_t lsr_id; 171 u_int16_t lspace_id; 172 } __packed; 173 174 #define SESS_PRMS_SIZE 18 175 176 struct status_tlv { 177 u_int16_t type; 178 u_int16_t length; 179 u_int32_t status_code; 180 u_int32_t msg_id; 181 u_int16_t msg_type; 182 } __packed; 183 184 #define STATUS_SIZE 14 185 #define STATUS_TLV_LEN 10 186 #define STATUS_FATAL 0x80000000 187 188 struct address_list_tlv { 189 u_int16_t type; 190 u_int16_t length; 191 u_int16_t family; 192 /* address entries */ 193 } __packed; 194 195 #define ADDR_IPV4 0x1 196 #define ADDR_IPV6 0x2 197 198 /* This struct is badly aligned so use two 32 bit fields */ 199 struct fec_elm { 200 u_int32_t hdr; 201 u_int32_t addr; 202 }; 203 204 #define FEC_ELM_MIN_LEN 4 205 #define FEC_WILDCARD 0x01 206 #define FEC_PREFIX 0x02 207 #define FEC_IPV4 0x0001 208 209 struct label_tlv { 210 u_int16_t type; 211 u_int16_t length; 212 u_int32_t label; 213 }; 214 215 #define LABEL_TLV_LEN 8 216 217 struct reqid_tlv { 218 u_int16_t type; 219 u_int16_t length; 220 u_int32_t reqid; 221 }; 222 223 #define REQID_TLV_LEN 8 224 225 #define NO_LABEL UINT_MAX 226 227 #endif /* !_LDP_H_ */ 228