/* $NetBSD: tlv.h,v 1.5 2022/02/07 02:35:09 rillig Exp $ */
/*-
* Copyright (c) 2010 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Mihai Chelaru <kefren@NetBSD.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _TLV_H_
#define _TLV_H_
/* TLV messages */
#define TLV_FEC 0x0100
#define TLV_ADDRESS_LIST 0x0101
#define TLV_HOP_COUNT 0x0103
#define TLV_PATH_VECTOR 0x0104
#define TLV_GENERIC_LABEL 0x0200
#define TLV_ATM_LABEL 0x0201
#define TLV_FR_LABEL 0x0202
#define TLV_STATUS 0x0300
#define TLV_EXTENDED_STATUS 0x0301
#define TLV_RETURNED_PDU 0x0302
#define TLV_RETURNED_MESSAGE 0x0303
#define TLV_COMMON_HELLO 0x0400
#define TLV_IPV4_TRANSPORT 0x0401
#define TLV_CONFIGURATION_SEQ 0x0402
#define TLV_IPV6_TRANSPORT 0x0403
#define TLV_COMMON_SESSION 0x0500
#define TLV_ATM_SESSION 0x0501
#define TLV_FR_SESSION 0x0502
#define TLV_LABEL_REQUEST 0x0600
/* Some common lengths in order to avoid writing them every time */
#define TLV_TYPE_LENGTH (sizeof(uint16_t) + sizeof(uint16_t))
#define MSGID_SIZE (sizeof(uint32_t))
/* General TLV structure */
struct tlv {
uint16_t type;
uint16_t length;
uint32_t messageid;
} __packed;
/* Common Hello TLV structure */
struct common_hello_tlv {
uint16_t type;
uint16_t length;
uint16_t holdtime;
uint16_t res;
} __packed;
/* Hello TLV structure */
struct hello_tlv {
uint16_t type;
uint16_t length;
uint32_t messageid;
struct common_hello_tlv ch;
/* XXX: optional parameters */
} __packed;
/* Transport address TLV */
struct transport_address_tlv {
uint16_t type;
uint16_t length;
union {
struct in_addr ip4addr;
struct in6_addr ip6addr;
} address;
} __packed;
#define CS_LEN (sizeof(struct init_tlv) - TLV_TYPE_LENGTH - MSGID_SIZE - \
sizeof(uint32_t))
/* Initialization TLV structure */
struct init_tlv {
uint16_t type;
uint16_t length;
uint32_t messageid;
/*
* Common Session Parameters
*/
uint16_t cs_type;
uint16_t cs_len;
uint16_t cs_version;
uint16_t cs_keepalive;
uint16_t cs_adpvlim; /* XXX */
uint16_t cs_maxpdulen;
struct in_addr cs_peeraddress;
uint16_t cs_peeraddrspace;
} __packed;
/* Keepalive TLV */
struct ka_tlv { /* Keepalive message */
uint16_t type;
uint16_t length;
uint32_t messageid;
} __packed;
/* Notification TLV */
struct notification_tlv {
uint16_t type;
uint16_t length;
uint32_t messageid;
uint16_t status;
uint16_t st_len;
uint32_t st_code;
uint32_t msg_id;
uint32_t msg_type;
} __packed;
/* Address LIST TLV for SEND */
struct address_list_tlv {
uint16_t type;
uint16_t length;
uint32_t messageid;
uint16_t a_type;
uint16_t a_length;
uint16_t a_af;
struct in_addr a_address;
} __packed;
/* Real AL TLV used for RCV for now */
struct al_tlv {
uint16_t type;
uint16_t length;
uint16_t af;
struct in_addr address;
} __packed;
struct address_tlv {
uint16_t type;
uint16_t length;
uint32_t messageid;
} __packed;
/* Label map TLV */
struct label_map_tlv {
uint16_t type;
uint16_t length;
uint32_t messageid;
} __packed;
/* FEC TLV */
struct fec_tlv {
uint16_t type;
uint16_t length;
} __packed;
struct prefix_tlv {
uint8_t type;
uint16_t af;
uint8_t prelen;
struct in_addr prefix;
} __packed;
struct host_tlv {
uint8_t type;
uint16_t af;
uint8_t length;
struct in_addr address;
} __packed;
struct label_tlv {
uint16_t type;
uint16_t length;
uint32_t label;
} __packed;
/* Label Request Message ID TLV */
struct label_request_tlv {
uint16_t type;
uint16_t length; /* 4 */
uint32_t messageid;
} __packed;
struct hello_tlv * get_hello_tlv(unsigned char *, uint);
void debug_tlv(struct tlv *);
#endif /* !_TLV_H_ */