104 lines
4.1 KiB
C
104 lines
4.1 KiB
C
/*
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* Copyright (c) 2013, Swedish Institute of Computer Science
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* Copyright (c) 2010, Vrije Universiteit Brussel
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*
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* Authors: Simon Duquennoy <simonduq@sics.se>
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* Joris Borms <joris.borms@vub.ac.be>
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*/
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#ifndef NBR_TABLE_H_
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#define NBR_TABLE_H_
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#include "contiki.h"
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#include "net/linkaddr.h"
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#include "net/netstack.h"
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/* Neighbor table size */
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#ifdef NBR_TABLE_CONF_MAX_NEIGHBORS
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#define NBR_TABLE_MAX_NEIGHBORS NBR_TABLE_CONF_MAX_NEIGHBORS
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#else /* NBR_TABLE_CONF_MAX_NEIGHBORS */
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#define NBR_TABLE_MAX_NEIGHBORS 8
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#endif /* NBR_TABLE_CONF_MAX_NEIGHBORS */
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/* An item in a neighbor table */
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typedef void nbr_table_item_t;
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/* Callback function, called when removing an item from a table */
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typedef void(nbr_table_callback)(nbr_table_item_t *item);
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/* A neighbor table */
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typedef struct nbr_table {
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int index;
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int item_size;
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nbr_table_callback *callback;
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nbr_table_item_t *data;
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} nbr_table_t;
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/** \brief A static neighbor table. To be initialized through nbr_table_register(name) */
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#define NBR_TABLE(type, name) \
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static type _##name##_mem[NBR_TABLE_MAX_NEIGHBORS]; \
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static nbr_table_t name##_struct = { 0, sizeof(type), NULL, (nbr_table_item_t *)_##name##_mem }; \
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static nbr_table_t *name = &name##_struct \
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/** \brief A non-static neighbor table. To be initialized through nbr_table_register(name) */
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#define NBR_TABLE_GLOBAL(type, name) \
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static type _##name##_mem[NBR_TABLE_MAX_NEIGHBORS]; \
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static nbr_table_t name##_struct = { 0, sizeof(type), NULL, (nbr_table_item_t *)_##name##_mem }; \
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nbr_table_t *name = &name##_struct \
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/** \brief Declaration of non-static neighbor tables */
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#define NBR_TABLE_DECLARE(name) extern nbr_table_t *name
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/** \name Neighbor tables: register and loop through table elements */
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/** @{ */
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int nbr_table_register(nbr_table_t *table, nbr_table_callback *callback);
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nbr_table_item_t *nbr_table_head(nbr_table_t *table);
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nbr_table_item_t *nbr_table_next(nbr_table_t *table, nbr_table_item_t *item);
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/** @} */
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/** \name Neighbor tables: add and get data */
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/** @{ */
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nbr_table_item_t *nbr_table_add_lladdr(nbr_table_t *table, const linkaddr_t *lladdr);
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nbr_table_item_t *nbr_table_get_from_lladdr(nbr_table_t *table, const linkaddr_t *lladdr);
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/** @} */
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/** \name Neighbor tables: set flags (unused, locked, unlocked) */
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/** @{ */
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int nbr_table_remove(nbr_table_t *table, nbr_table_item_t *item);
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int nbr_table_lock(nbr_table_t *table, nbr_table_item_t *item);
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int nbr_table_unlock(nbr_table_t *table, nbr_table_item_t *item);
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/** @} */
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/** \name Neighbor tables: address manipulation */
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/** @{ */
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linkaddr_t *nbr_table_get_lladdr(nbr_table_t *table, const nbr_table_item_t *item);
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/** @} */
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#endif /* NBR_TABLE_H_ */
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