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/* $OpenBSD: ldp.h,v 1.16 2013/10/17 17:52:21 renato Exp $ */
/*
* 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 <netinet/in.h>
/* misc */
#define LDP_VERSION 1
#define LDP_PORT 646
#define AllRouters "224.0.0.2"
#define LDP_MAX_LEN 4096
#define LINK_DFLT_HOLDTIME 15
#define TARGETED_DFLT_HOLDTIME 45
#define MIN_HOLDTIME 1
#define MAX_HOLDTIME 0xffff
#define INFINITE_HOLDTIME 0xffff
#define DEFAULT_KEEPALIVE 180
#define MIN_KEEPALIVE 1
#define MAX_KEEPALIVE 0xffff
#define KEEPALIVE_PER_PERIOD 3
#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
/* 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
/* LDP header */
struct ldp_hdr {
u_int16_t version;
u_int16_t length;
u_int32_t lsr_id;
u_int16_t lspace_id;
} __packed;
#define LDP_HDR_SIZE 10
#define LDP_HDR_PDU_LEN 6
/* TLV record */
struct tlv {
u_int16_t type;
u_int16_t length;
};
#define TLV_HDR_LEN 4
struct ldp_msg {
u_int16_t type;
u_int16_t length;
u_int32_t msgid;
/* Mandatory Parameters */
/* Optional Parameters */
} __packed;
#define LDP_MSG_LEN 8
#define UNKNOWN_FLAG 0x8000
#define FORWARD_FLAG 0xc000
#define TARGETED_HELLO 0x8000
#define REQUEST_TARG_HELLO 0x4000
struct hello_prms_tlv {
u_int16_t type;
u_int16_t length;
u_int16_t holdtime;
u_int16_t flags;
};
struct hello_prms_opt4_tlv {
u_int16_t type;
u_int16_t length;
u_int32_t value;
};
#define HELLO_PRMS_SIZE 8
#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
struct sess_prms_tlv {
u_int16_t type;
u_int16_t length;
u_int16_t proto_version;
u_int16_t keepalive_time;
u_int8_t reserved;
u_int8_t pvlim;
u_int16_t max_pdu_len;
u_int32_t lsr_id;
u_int16_t lspace_id;
} __packed;
#define SESS_PRMS_SIZE 18
struct status_tlv {
u_int16_t type;
u_int16_t length;
u_int32_t status_code;
u_int32_t msg_id;
u_int16_t msg_type;
} __packed;
#define STATUS_SIZE 14
#define STATUS_TLV_LEN 10
#define STATUS_FATAL 0x80000000
struct address_list_tlv {
u_int16_t type;
u_int16_t length;
u_int16_t family;
/* address entries */
} __packed;
#define ADDR_IPV4 0x1
#define ADDR_IPV6 0x2
/* This struct is badly aligned so use two 32 bit fields */
struct fec_elm {
u_int32_t hdr;
u_int32_t addr;
};
#define FEC_ELM_MIN_LEN 4
#define FEC_WILDCARD 0x01
#define FEC_PREFIX 0x02
#define FEC_IPV4 0x0001
struct label_tlv {
u_int16_t type;
u_int16_t length;
u_int32_t label;
};
#define LABEL_TLV_LEN 8
struct reqid_tlv {
u_int16_t type;
u_int16_t length;
u_int32_t reqid;
};
#define REQID_TLV_LEN 8
#define NO_LABEL UINT_MAX
#endif /* !_LDP_H_ */
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