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/*
* Copyright (C) 2014 Freie Universitรคt Berlin
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup nhdp
* @{
*
* @file
* @brief Writer interface for message generation in NHDP
*
* @author Fabian Nack <nack@inf.fu-berlin.de>
*/
#ifndef NHDP_WRITER_H_
#define NHDP_WRITER_H_
#include "rfc5444/rfc5444_iana.h"
#include "rfc5444/rfc5444_writer.h"
#include "nhdp.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Set up the NHDP writer
*
* Sets the writer's buffers, initializes the writer and registers HELLO messages
* as new message type.
*/
void nhdp_writer_init(void);
/**
* @brief Clean up the NHDP writer
*/
void nhdp_writer_cleanup(void);
/**
* @brief Register a new target interface in the writer
*
* @param[in] new_if Pointer to the writer target of the NHDP interface entry
*/
void nhdp_writer_register_if(struct rfc5444_writer_target *new_if);
/**
* @brief Construct and send a HELLO message using the given interface
*
* @param[in] if_entry Pointer to NHDP interface entry the message must be created for
*/
void nhdp_writer_send_hello(nhdp_if_entry_t *if_entry);
/**
* @brief Add a NHDP address to the currently constructed message
*
* @note
* Must not be called from outside the NHDP writer's message creation process.
*
* @param[in] wr Pointer to the current NHDP writer used for message creation
* @param[in] addr Pointer to a NHDP address to add to the HELLO message
* @param[in] type TLV type for the address
* @param[in] value TLV value for the address
* @param[in] metric_in Encoded incoming link metric value
* @param[in] metric_out Encoded outgoing link metric value
*/
void nhdp_writer_add_addr(struct rfc5444_writer *wr, nhdp_addr_t *addr,
enum rfc5444_addrtlv_iana type, uint8_t value,
uint16_t metric_in, uint16_t metric_out);
#ifdef __cplusplus
}
#endif
#endif /* NHDP_WRITER_H_ */
/** @} */
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