1 /* $OpenBSD: ldp.h,v 1.9 2011/01/10 11:58:39 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 */ 89 struct 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 */ 100 struct tlv { 101 u_int16_t type; 102 u_int16_t length; 103 }; 104 #define TLV_HDR_LEN 4 105 106 struct ldp_msg { 107 u_int16_t type; 108 u_int16_t length; 109 u_int32_t msgid; 110 /* Mandatory Parameters */ 111 /* Optional Parameters */ 112 } __packed; 113 114 #define LDP_MSG_LEN 8 115 116 #define UNKNOWN_FLAGS_MASK 0xc000 117 #define UNKNOWN_FLAG 0x8000 118 #define FORWARD_FLAG 0xc000 119 120 #define TARGETED_HELLO 0x8000 121 #define REQUEST_TARG_HELLO 0x4000 122 123 struct hello_prms_tlv { 124 u_int16_t type; 125 u_int16_t length; 126 u_int16_t holdtime; 127 u_int16_t flags; 128 }; 129 130 #define HELLO_PRMS_SIZE 8 131 132 #define S_SUCCESS 0x00000000 133 #define S_BAD_LDP_ID 0x80000001 134 #define S_BAD_PROTO_VER 0x80000002 135 #define S_BAD_PDU_LEN 0x80000003 136 #define S_UNKNOWN_MSG 0x00000004 137 #define S_BAD_MSG_LEN 0x80000005 138 #define S_UNKNOWN_TLV 0x00000006 139 #define S_BAD_TLV_LEN 0x80000007 140 #define S_BAD_TLV_VAL 0x80000008 141 #define S_HOLDTIME_EXP 0x80000009 142 #define S_SHUTDOWN 0x8000000A 143 #define S_LOOP_DETECTED 0x0000000B 144 #define S_UNKNOWN_FEC 0x0000000C 145 #define S_NO_ROUTE 0x0000000D 146 #define S_NO_LABEL_RES 0x0000000E 147 #define S_AVAILABLE 0x0000000F 148 #define S_NO_HELLO 0x80000010 149 #define S_PARM_ADV_MODE 0x80000011 150 #define S_MAX_PDU_LEN 0x80000012 151 #define S_PARM_L_RANGE 0x80000013 152 #define S_KEEPALIVE_TMR 0x80000014 153 #define S_LAB_REQ_ABRT 0x00000015 154 #define S_MISS_MSG 0x00000016 155 #define S_UNSUP_ADDR 0x00000017 156 #define S_KEEPALIVE_BAD 0x80000018 157 #define S_INTERN_ERR 0x80000019 158 159 struct sess_prms_tlv { 160 u_int16_t type; 161 u_int16_t length; 162 u_int16_t proto_version; 163 u_int16_t keepalive_time; 164 u_int8_t reserved; 165 u_int8_t pvlim; 166 u_int16_t max_pdu_len; 167 u_int32_t lsr_id; 168 u_int16_t lspace_id; 169 } __packed; 170 171 #define SESS_PRMS_SIZE 18 172 173 struct status_tlv { 174 u_int16_t type; 175 u_int16_t length; 176 u_int32_t status_code; 177 u_int32_t msg_id; 178 u_int16_t msg_type; 179 } __packed; 180 181 #define STATUS_SIZE 14 182 #define STATUS_TLV_LEN 10 183 #define STATUS_FATAL 0x80000000 184 185 struct address_list_tlv { 186 u_int16_t type; 187 u_int16_t length; 188 u_int16_t family; 189 /* address entries */ 190 } __packed; 191 192 #define BASIC_LABEL_MAP_LEN 24 193 194 #define ADDR_IPV4 0x1 195 #define ADDR_IPV6 0x2 196 197 /* This struct is badly aligned so use two 32 bit fields */ 198 struct fec_elm { 199 u_int32_t hdr; 200 u_int32_t addr; 201 }; 202 203 #define FEC_ELM_MIN_LEN 4 204 #define FEC_WILDCARD 0x01 205 #define FEC_PREFIX 0x02 206 #define FEC_IPV4 0x0001 207 208 struct label_tlv { 209 u_int16_t type; 210 u_int16_t length; 211 u_int32_t label; 212 }; 213 214 #define LABEL_TLV_LEN 8 215 216 struct reqid_tlv { 217 u_int16_t type; 218 u_int16_t length; 219 u_int32_t reqid; 220 }; 221 222 #define REQID_TLV_LEN 8 223 224 #define NO_LABEL UINT_MAX 225 226 #endif /* !_LDP_H_ */ 227