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/* $OpenBSD: ldp.h,v 1.37 2017/03/03 23:56:54 renato Exp $ */
/*
* Copyright (c) 2013, 2016 Renato Westphal <renato@openbsd.org>
* Copyright (c) 2009 Michele Marchetto <michele@openbsd.org>
* Copyright (c) 2004, 2005, 2008 Esben Norby <norby@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* LDP protocol definitions */
#ifndef _LDP_H_
#define _LDP_H_
#include <sys/types.h>
/* misc */
#define LDP_VERSION 1
#define LDP_PORT 646
#define LDP_MAX_LEN 4096
/* All Routers on this Subnet group multicast addresses */
#define AllRouters_v4 "224.0.0.2"
#define AllRouters_v6 "ff02::2"
#define LINK_DFLT_HOLDTIME 15
#define TARGETED_DFLT_HOLDTIME 45
#define MIN_HOLDTIME 3
#define MAX_HOLDTIME 0xffff
#define INFINITE_HOLDTIME 0xffff
#define DEFAULT_KEEPALIVE 180
#define MIN_KEEPALIVE 3
#define MAX_KEEPALIVE 0xffff
#define KEEPALIVE_PER_PERIOD 3
#define INIT_FSM_TIMEOUT 15
#define DEFAULT_HELLO_INTERVAL 5
#define MIN_HELLO_INTERVAL 1
#define MAX_HELLO_INTERVAL 0xffff
#define INIT_DELAY_TMR 15
#define MAX_DELAY_TMR 120
#define MIN_PWID_ID 1
#define MAX_PWID_ID 0xffffffff
#define DEFAULT_L2VPN_MTU 1500
#define MIN_L2VPN_MTU 512
#define MAX_L2VPN_MTU 0xffff
/* LDP message types */
#define MSG_TYPE_NOTIFICATION 0x0001
#define MSG_TYPE_HELLO 0x0100
#define MSG_TYPE_INIT 0x0200
#define MSG_TYPE_KEEPALIVE 0x0201
#define MSG_TYPE_ADDR 0x0300
#define MSG_TYPE_ADDRWITHDRAW 0x0301
#define MSG_TYPE_LABELMAPPING 0x0400
#define MSG_TYPE_LABELREQUEST 0x0401
#define MSG_TYPE_LABELWITHDRAW 0x0402
#define MSG_TYPE_LABELRELEASE 0x0403
#define MSG_TYPE_LABELABORTREQ 0x0404
/* LDP TLV types */
#define TLV_TYPE_FEC 0x0100
#define TLV_TYPE_ADDRLIST 0x0101
#define TLV_TYPE_HOPCOUNT 0x0103
#define TLV_TYPE_PATHVECTOR 0x0104
#define TLV_TYPE_GENERICLABEL 0x0200
#define TLV_TYPE_ATMLABEL 0x0201
#define TLV_TYPE_FRLABEL 0x0202
#define TLV_TYPE_STATUS 0x0300
#define TLV_TYPE_EXTSTATUS 0x0301
#define TLV_TYPE_RETURNEDPDU 0x0302
#define TLV_TYPE_RETURNEDMSG 0x0303
#define TLV_TYPE_COMMONHELLO 0x0400
#define TLV_TYPE_IPV4TRANSADDR 0x0401
#define TLV_TYPE_CONFIG 0x0402
#define TLV_TYPE_IPV6TRANSADDR 0x0403
#define TLV_TYPE_COMMONSESSION 0x0500
#define TLV_TYPE_ATMSESSIONPAR 0x0501
#define TLV_TYPE_FRSESSION 0x0502
#define TLV_TYPE_LABELREQUEST 0x0600
/* RFC 4447 */
#define TLV_TYPE_PW_STATUS 0x896A
#define TLV_TYPE_PW_IF_PARAM 0x096B
#define TLV_TYPE_PW_GROUP_ID 0x096C
/* RFC 7552 */
#define TLV_TYPE_DUALSTACK 0x8701
/* LDP header */
struct ldp_hdr {
uint16_t version;
uint16_t length;
uint32_t lsr_id;
uint16_t lspace_id;
} __packed;
#define LDP_HDR_SIZE 10 /* actual size of the LDP header */
#define LDP_HDR_PDU_LEN 6 /* minimum "PDU Length" */
#define LDP_HDR_DEAD_LEN 4
/* TLV record */
struct tlv {
uint16_t type;
uint16_t length;
};
#define TLV_HDR_SIZE 4
struct ldp_msg {
uint16_t type;
uint16_t length;
uint32_t id;
/* Mandatory Parameters */
/* Optional Parameters */
} __packed;
#define LDP_MSG_SIZE 8 /* minimum size of LDP message */
#define LDP_MSG_LEN 4 /* minimum "Message Length" */
#define LDP_MSG_DEAD_LEN 4
#define UNKNOWN_FLAG 0x8000
#define FORWARD_FLAG 0xc000
struct hello_prms_tlv {
uint16_t type;
uint16_t length;
uint16_t holdtime;
uint16_t flags;
};
#define F_HELLO_TARGETED 0x8000
#define F_HELLO_REQ_TARG 0x4000
#define F_HELLO_GTSM 0x2000
struct hello_prms_opt4_tlv {
uint16_t type;
uint16_t length;
uint32_t value;
};
struct hello_prms_opt16_tlv {
uint16_t type;
uint16_t length;
uint8_t value[16];
};
#define DUAL_STACK_LDPOV4 4
#define DUAL_STACK_LDPOV6 6
#define F_HELLO_TLV_RCVD_ADDR 0x01
#define F_HELLO_TLV_RCVD_CONF 0x02
#define F_HELLO_TLV_RCVD_DS 0x04
#define S_SUCCESS 0x00000000
#define S_BAD_LDP_ID 0x80000001
#define S_BAD_PROTO_VER 0x80000002
#define S_BAD_PDU_LEN 0x80000003
#define S_UNKNOWN_MSG 0x00000004
#define S_BAD_MSG_LEN 0x80000005
#define S_UNKNOWN_TLV 0x00000006
#define S_BAD_TLV_LEN 0x80000007
#define S_BAD_TLV_VAL 0x80000008
#define S_HOLDTIME_EXP 0x80000009
#define S_SHUTDOWN 0x8000000A
#define S_LOOP_DETECTED 0x0000000B
#define S_UNKNOWN_FEC 0x0000000C
#define S_NO_ROUTE 0x0000000D
#define S_NO_LABEL_RES 0x0000000E
#define S_AVAILABLE 0x0000000F
#define S_NO_HELLO 0x80000010
#define S_PARM_ADV_MODE 0x80000011
#define S_MAX_PDU_LEN 0x80000012
#define S_PARM_L_RANGE 0x80000013
#define S_KEEPALIVE_TMR 0x80000014
#define S_LAB_REQ_ABRT 0x00000015
#define S_MISS_MSG 0x00000016
#define S_UNSUP_ADDR 0x00000017
#define S_KEEPALIVE_BAD 0x80000018
#define S_INTERN_ERR 0x80000019
/* RFC 4447 */
#define S_ILLEGAL_CBIT 0x00000024
#define S_WRONG_CBIT 0x00000025
#define S_INCPT_BITRATE 0x00000026
#define S_CEP_MISCONF 0x00000027
#define S_PW_STATUS 0x00000028
#define S_UNASSIGN_TAI 0x00000029
#define S_MISCONF_ERR 0x0000002A
#define S_WITHDRAW_MTHD 0x0000002B
/* RFC 7552 */
#define S_TRANS_MISMTCH 0x80000032
#define S_DS_NONCMPLNCE 0x80000033
struct sess_prms_tlv {
uint16_t type;
uint16_t length;
uint16_t proto_version;
uint16_t keepalive_time;
uint8_t reserved;
uint8_t pvlim;
uint16_t max_pdu_len;
uint32_t lsr_id;
uint16_t lspace_id;
} __packed;
#define SESS_PRMS_SIZE 18
#define SESS_PRMS_LEN 14
struct status_tlv {
uint16_t type;
uint16_t length;
uint32_t status_code;
uint32_t msg_id;
uint16_t msg_type;
} __packed;
#define STATUS_SIZE 14
#define STATUS_TLV_LEN 10
#define STATUS_FATAL 0x80000000
#define AF_IPV4 0x1
#define AF_IPV6 0x2
struct address_list_tlv {
uint16_t type;
uint16_t length;
uint16_t family;
/* address entries */
} __packed;
#define ADDR_LIST_SIZE 6
#define FEC_ELM_WCARD_LEN 1
#define FEC_ELM_PREFIX_MIN_LEN 4
#define FEC_PWID_ELM_MIN_LEN 8
#define FEC_PWID_SIZE 4
#define MAP_TYPE_WILDCARD 0x01
#define MAP_TYPE_PREFIX 0x02
#define MAP_TYPE_PWID 0x80
#define MAP_TYPE_GENPWID 0x81
#define CONTROL_WORD_FLAG 0x8000
#define PW_TYPE_ETHERNET_TAGGED 0x0004
#define PW_TYPE_ETHERNET 0x0005
#define DEFAULT_PW_TYPE PW_TYPE_ETHERNET
/* RFC 4447 Sub-TLV record */
struct subtlv {
uint8_t type;
uint8_t length;
};
#define SUBTLV_HDR_SIZE 2
#define SUBTLV_IFMTU 0x01
#define SUBTLV_VLANID 0x06
#define FEC_SUBTLV_IFMTU_SIZE 4
#define FEC_SUBTLV_VLANID_SIZE 4
struct label_tlv {
uint16_t type;
uint16_t length;
uint32_t label;
};
#define LABEL_TLV_SIZE 8
#define LABEL_TLV_LEN 4
struct reqid_tlv {
uint16_t type;
uint16_t length;
uint32_t reqid;
};
#define REQID_TLV_SIZE 8
#define REQID_TLV_LEN 4
struct pw_status_tlv {
uint16_t type;
uint16_t length;
uint32_t value;
};
#define PW_STATUS_TLV_SIZE 8
#define PW_STATUS_TLV_LEN 4
#define PW_FORWARDING 0
#define PW_NOT_FORWARDING (1 << 0)
#define PW_LOCAL_RX_FAULT (1 << 1)
#define PW_LOCAL_TX_FAULT (1 << 2)
#define PW_PSN_RX_FAULT (1 << 3)
#define PW_PSN_TX_FAULT (1 << 4)
#define NO_LABEL UINT32_MAX
#endif /* !_LDP_H_ */
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