/*
 * Copyright (C) 2013 Stephan Arndt <arndtste@zedat.fu-berlin.de>
 *
 * 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     rpl
 * @{
 * @file        of_mrhof.h
 * @brief       Objective Function MRHOF.
 *
 * Header-file, which defines all functions for the implementation of Objective Function MRHOF.
 *
 * @author      Eric Engel <eric.engel@fu-berlin.de>
 * @}
 */

#ifndef OF_MRHOF_H
#define OF_MRHOF_H

#include "rpl/rpl_structs.h"
#include "rpl/rpl_config.h"

#ifdef __cplusplus
extern "C" {
#endif

/**
 * Disallow links with greater than 4 expected
 * transmission counts on the selected path.
 */
#define MAX_LINK_METRIC (512)

/**
 * Disallow paths with greater than 256
 * expected transmission counts.
 */
#define MAX_PATH_COST (0x8000)

/**
 * Switch to a new path only if it is
 * expected to require at least 1.5 fewer transmissions than the
 * current path.
 */
#define PARENT_SWITCH_THRESHOLD (192)

/**
 *  Do not allow a node to become a floating root.
 *  (Currently unused, since the RPL-implementation does not allow for floating
 *  roots).
 */
#define ALLOW_FLOATING_ROOT (0)

/**
 *  While assigning Rank when using ETX, use the representation of ETX described
 *  in [RFC6551], i.e., assign Rank equal to ETX * 128.
 */
#define ETX_RANK_MULTIPLIER (0x80)

rpl_of_t *rpl_get_of_mrhof(void);

#ifdef __cplusplus
}
#endif

#endif /* OF_MRHOF_H */