contiki/core/net/rime/abc.h

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/*
* Copyright (c) 2006, Swedish Institute of Computer Science.
* All rights reserved.
*
* 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.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE 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 INSTITUTE 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.
*
* This file is part of the Contiki operating system.
*
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*/
/**
* \file
* Header file for the Rime module Anonymous BroadCast (abc)
* \author
* Adam Dunkels <adam@sics.se>
*/
/**
* \addtogroup rime
* @{
*/
/**
* \defgroup rimeabc Anonymous best-effort local area broadcast
* @{
*
* The abc module sends packets to all local area neighbors. The abc
* module adds no headers to outgoing packets.
*
* \section channels Channels
*
* The abc module uses 1 channel.
*
*/
#ifndef ABC_H_
#define ABC_H_
#include "net/packetbuf.h"
#include "net/rime/channel.h"
struct abc_conn;
#define ABC_ATTRIBUTES
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/**
* \brief Callback structure for abc
*
*/
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struct abc_callbacks {
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/** Called when a packet has been received by the abc module. */
void (* recv)(struct abc_conn *ptr);
void (* sent)(struct abc_conn *ptr, int status, int num_tx);
};
struct abc_conn {
struct channel channel;
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const struct abc_callbacks *u;
};
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/**
* \brief Set up an anonymous best-effort broadcast connection
* \param c A pointer to a struct abc_conn
* \param channel The channel on which the connection will operate
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* \param u A struct abc_callbacks with function pointers to functions that will be called when a packet has been received
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*
* This function sets up an abc connection on the
* specified channel. The caller must have allocated the
* memory for the struct abc_conn, usually by declaring it
* as a static variable.
*
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* The struct abc_callbacks pointer must point to a structure
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* containing a pointer to a function that will be called
* when a packet arrives on the channel.
*
*/
void abc_open(struct abc_conn *c, uint16_t channel,
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const struct abc_callbacks *u);
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/**
* \brief Close an abc connection
* \param c A pointer to a struct abc_conn
*
* This function closes an abc connection that has
* previously been opened with abc_open().
*
* This function typically is called as an exit handler.
*
*/
void abc_close(struct abc_conn *c);
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/**
* \brief Send an anonymous best-effort broadcast packet
* \param c The abc connection on which the packet should be sent
* \retval Non-zero if the packet could be sent, zero otherwise
*
* This function sends an anonymous best-effort broadcast
* packet. The packet must be present in the packetbuf
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* before this function is called.
*
* The parameter c must point to an abc connection that
* must have previously been set up with abc_open().
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*
*/
int abc_send(struct abc_conn *c);
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/**
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* \brief Internal Rime function: Pass a packet to the abc layer
*
* This function is used internally by Rime to pass
* packets to the abc layer. Should never be called
* directly.
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*
*/
void abc_input(struct channel *channel);
void abc_sent(struct channel *channel, int status, int num_tx);
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#endif /* ABC_H_ */
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/** @} */
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/** @} */