ldpd/ldp.h

   1 /*      $OpenBSD$ */
   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 /* misc */
  27 #define LDP_VERSION             1
  28 #define LDP_PORT                646
  29 #define LDP_MAX_LEN             4096
  30
  31 /* All Routers on this Subnet group multicast addresses */
  32 #define AllRouters_v4           "224.0.0.2"
  33 #define AllRouters_v6           "ff02::2"
  34
  35 #define LINK_DFLT_HOLDTIME      15
  36 #define TARGETED_DFLT_HOLDTIME  45
  37 #define MIN_HOLDTIME            3
  38 #define MAX_HOLDTIME            0xffff
  39 #define INFINITE_HOLDTIME       0xffff
  40
  41 #define DEFAULT_KEEPALIVE       180
  42 #define MIN_KEEPALIVE           3
  43 #define MAX_KEEPALIVE           0xffff
  44 #define KEEPALIVE_PER_PERIOD    3
  45 #define INIT_FSM_TIMEOUT        15
  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_CAPABILITY     0x0202 /* RFC 5561 */
  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      0x896A
  97 #define TLV_TYPE_PW_IF_PARAM    0x096B
  98 #define TLV_TYPE_PW_GROUP_ID    0x096C
  99 /* RFC 5561 */
 100 #define TLV_TYPE_RETURNED_TLVS  0x8304
 101 #define TLV_TYPE_DYNAMIC_CAP    0x8506
 102 /* RFC 7552 */
 103 #define TLV_TYPE_DUALSTACK      0x8701
 104
 105 /* LDP header */
 106 struct ldp_hdr {
 107         uint16_t        version;
 108         uint16_t        length;
 109         uint32_t        lsr_id;
 110         uint16_t        lspace_id;
 111 } __attribute__ ((packed));
 112
 113 #define LDP_HDR_SIZE            10      /* actual size of the LDP header */
 114 #define LDP_HDR_PDU_LEN         6       /* minimum "PDU Length" */
 115 #define LDP_HDR_DEAD_LEN        4
 116
 117 /* TLV record */
 118 struct tlv {
 119         uint16_t        type;
 120         uint16_t        length;
 121 };
 122 #define TLV_HDR_SIZE            4
 123
 124 struct ldp_msg {
 125         uint16_t        type;
 126         uint16_t        length;
 127         uint32_t        id;
 128         /* Mandatory Parameters */
 129         /* Optional Parameters */
 130 } __attribute__ ((packed));
 131
 132 #define LDP_MSG_SIZE            8       /* minimum size of LDP message */
 133 #define LDP_MSG_LEN             4       /* minimum "Message Length" */
 134 #define LDP_MSG_DEAD_LEN        4
 135
 136 #define UNKNOWN_FLAG            0x8000
 137 #define FORWARD_FLAG            0xc000
 138
 139 struct hello_prms_tlv {
 140         uint16_t        type;
 141         uint16_t        length;
 142         uint16_t        holdtime;
 143         uint16_t        flags;
 144 };
 145 #define F_HELLO_TARGETED        0x8000
 146 #define F_HELLO_REQ_TARG        0x4000
 147 #define F_HELLO_GTSM            0x2000
 148
 149 struct hello_prms_opt4_tlv {
 150         uint16_t        type;
 151         uint16_t        length;
 152         uint32_t        value;
 153 };
 154
 155 struct hello_prms_opt16_tlv {
 156         uint16_t        type;
 157         uint16_t        length;
 158         uint8_t         value[16];
 159 };
 160
 161 #define DUAL_STACK_LDPOV4       4
 162 #define DUAL_STACK_LDPOV6       6
 163
 164 #define F_HELLO_TLV_RCVD_ADDR   0x01
 165 #define F_HELLO_TLV_RCVD_CONF   0x02
 166 #define F_HELLO_TLV_RCVD_DS     0x04
 167
 168 #define S_SUCCESS       0x00000000
 169 #define S_BAD_LDP_ID    0x80000001
 170 #define S_BAD_PROTO_VER 0x80000002
 171 #define S_BAD_PDU_LEN   0x80000003
 172 #define S_UNKNOWN_MSG   0x00000004
 173 #define S_BAD_MSG_LEN   0x80000005
 174 #define S_UNKNOWN_TLV   0x00000006
 175 #define S_BAD_TLV_LEN   0x80000007
 176 #define S_BAD_TLV_VAL   0x80000008
 177 #define S_HOLDTIME_EXP  0x80000009
 178 #define S_SHUTDOWN      0x8000000A
 179 #define S_LOOP_DETECTED 0x0000000B
 180 #define S_UNKNOWN_FEC   0x0000000C
 181 #define S_NO_ROUTE      0x0000000D
 182 #define S_NO_LABEL_RES  0x0000000E
 183 #define S_AVAILABLE     0x0000000F
 184 #define S_NO_HELLO      0x80000010
 185 #define S_PARM_ADV_MODE 0x80000011
 186 #define S_MAX_PDU_LEN   0x80000012
 187 #define S_PARM_L_RANGE  0x80000013
 188 #define S_KEEPALIVE_TMR 0x80000014
 189 #define S_LAB_REQ_ABRT  0x00000015
 190 #define S_MISS_MSG      0x00000016
 191 #define S_UNSUP_ADDR    0x00000017
 192 #define S_KEEPALIVE_BAD 0x80000018
 193 #define S_INTERN_ERR    0x80000019
 194 /* RFC 4447 */
 195 #define S_ILLEGAL_CBIT  0x00000024
 196 #define S_WRONG_CBIT    0x00000025
 197 #define S_INCPT_BITRATE 0x00000026
 198 #define S_CEP_MISCONF   0x00000027
 199 #define S_PW_STATUS     0x00000028
 200 #define S_UNASSIGN_TAI  0x00000029
 201 #define S_MISCONF_ERR   0x0000002A
 202 #define S_WITHDRAW_MTHD 0x0000002B
 203 /* RFC 5561 */
 204 #define S_UNSSUPORTDCAP 0x0000002E
 205 /* RFC 7552 */
 206 #define S_TRANS_MISMTCH 0x80000032
 207 #define S_DS_NONCMPLNCE 0x80000033
 208
 209 struct sess_prms_tlv {
 210         uint16_t        type;
 211         uint16_t        length;
 212         uint16_t        proto_version;
 213         uint16_t        keepalive_time;
 214         uint8_t         reserved;
 215         uint8_t         pvlim;
 216         uint16_t        max_pdu_len;
 217         uint32_t        lsr_id;
 218         uint16_t        lspace_id;
 219 } __attribute__ ((packed));
 220
 221 #define SESS_PRMS_SIZE          18
 222 #define SESS_PRMS_LEN           14
 223
 224 struct status_tlv {
 225         uint16_t        type;
 226         uint16_t        length;
 227         uint32_t        status_code;
 228         uint32_t        msg_id;
 229         uint16_t        msg_type;
 230 } __attribute__ ((packed));
 231
 232 #define STATUS_SIZE             14
 233 #define STATUS_TLV_LEN          10
 234 #define STATUS_FATAL            0x80000000
 235
 236 struct capability_tlv {
 237         uint16_t        type;
 238         uint16_t        length;
 239         uint8_t         reserved;
 240 };
 241 #define STATE_BIT               0x80
 242
 243 #define F_CAP_TLV_RCVD_DYNAMIC  0x01
 244
 245 #define CAP_TLV_DYNAMIC_SIZE    5
 246 #define CAP_TLV_DYNAMIC_LEN     1
 247
 248 #define AF_IPV4                 0x1
 249 #define AF_IPV6                 0x2
 250
 251 struct address_list_tlv {
 252         uint16_t        type;
 253         uint16_t        length;
 254         uint16_t        family;
 255         /* address entries */
 256 } __attribute__ ((packed));
 257
 258 #define ADDR_LIST_SIZE          6
 259
 260 #define FEC_ELM_WCARD_LEN       1
 261 #define FEC_ELM_PREFIX_MIN_LEN  4
 262 #define FEC_PWID_ELM_MIN_LEN    8
 263 #define FEC_PWID_SIZE           4
 264
 265 #define MAP_TYPE_WILDCARD       0x01
 266 #define MAP_TYPE_PREFIX         0x02
 267 #define MAP_TYPE_PWID           0x80
 268 #define MAP_TYPE_GENPWID        0x81
 269
 270 #define CONTROL_WORD_FLAG       0x8000
 271 #define PW_TYPE_ETHERNET_TAGGED 0x0004
 272 #define PW_TYPE_ETHERNET        0x0005
 273 #define DEFAULT_PW_TYPE         PW_TYPE_ETHERNET
 274
 275 /* RFC 4447 Sub-TLV record */
 276 struct subtlv {
 277         uint8_t         type;
 278         uint8_t         length;
 279 };
 280 #define SUBTLV_HDR_SIZE         2
 281
 282 #define SUBTLV_IFMTU            0x01
 283 #define SUBTLV_VLANID           0x06
 284
 285 #define FEC_SUBTLV_IFMTU_SIZE   4
 286 #define FEC_SUBTLV_VLANID_SIZE  4
 287
 288 struct label_tlv {
 289         uint16_t        type;
 290         uint16_t        length;
 291         uint32_t        label;
 292 };
 293 #define LABEL_TLV_SIZE          8
 294 #define LABEL_TLV_LEN           4
 295
 296 struct reqid_tlv {
 297         uint16_t        type;
 298         uint16_t        length;
 299         uint32_t        reqid;
 300 };
 301 #define REQID_TLV_SIZE          8
 302 #define REQID_TLV_LEN           4
 303
 304 struct pw_status_tlv {
 305         uint16_t        type;
 306         uint16_t        length;
 307         uint32_t        value;
 308 };
 309 #define PW_STATUS_TLV_SIZE      8
 310 #define PW_STATUS_TLV_LEN       4
 311
 312 #define PW_FORWARDING           0
 313 #define PW_NOT_FORWARDING       (1 << 0)
 314 #define PW_LOCAL_RX_FAULT       (1 << 1)
 315 #define PW_LOCAL_TX_FAULT       (1 << 2)
 316 #define PW_PSN_RX_FAULT         (1 << 3)
 317 #define PW_PSN_TX_FAULT         (1 << 4)
 318
 319 #define NO_LABEL                UINT32_MAX
 320
 321 #endif /* !_LDP_H_ */