135 lines
4.4 KiB
C
135 lines
4.4 KiB
C
/**
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* \addtogroup rime
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* @{
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*/
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/**
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* \defgroup rime_abc Anonymous best-effort local area broadcast (abc)
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* @{
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*
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* The abc module sends packets to all local area neighbors without
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* any extra headers that idendtify the sender or receiver.
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*/
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/*
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* Copyright (c) 2006, Swedish Institute of Computer Science.
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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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* This file is part of the Contiki operating system.
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*
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* $Id: abc.h,v 1.8 2007/03/25 12:05:51 adamdunkels Exp $
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*/
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/**
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* \file
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* Header file for the Rime module Anonymous BroadCast (abc)
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* \author
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* Adam Dunkels <adam@sics.se>
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*/
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#ifndef __ABC_H__
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#define __ABC_H__
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#include "contiki-net.h"
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#include "net/rime/rimebuf.h"
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struct abc_conn;
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/**
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* \brief Callback structure for abc
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*
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*/
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struct abc_callbacks {
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/** Called when a packet has been received by the abc module. */
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void (* recv)(struct abc_conn *ptr);
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};
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struct abc_conn {
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struct abc_conn *next;
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u16_t channel;
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const struct abc_callbacks *u;
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};
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/**
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* \brief Set up an anonymous best-effort broadcast connection
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* \param c A pointer to a struct abc_conn
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* \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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*
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* This function sets up an abc connection on the
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* specified channel. The caller must have allocated the
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* memory for the struct abc_conn, usually by declaring it
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* as a static variable.
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*
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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
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* when a packet arrives on the channel.
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*
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*/
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void abc_open(struct abc_conn *c, u16_t channel,
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const struct abc_callbacks *u);
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/**
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* \brief Close an abc connection
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* \param c A pointer to a struct abc_conn
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*
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* This function closes an abc connection that has
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* previously been opened with abc_open().
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*
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* This function typically is called as an exit handler.
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*
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*/
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void abc_close(struct abc_conn *c);
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/**
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* \brief Send an anonymous best-effort broadcast packet
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* \param c The abc connection on which the packet should be sent
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* \retval Non-zero if the packet could be sent, zero otherwise
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*
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* This function sends an anonymous best-effort broadcast
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* packet. The packet must be present in the rimebuf
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* before this function is called.
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*
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* The parameter c must point to an abc connection that
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* must have previously been set up with abc_open().
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*
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*/
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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
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*
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* This function is used internally by Rime to pass
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* packets to the abc layer. Should never be called
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* directly.
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*
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*/
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void abc_input_packet(void);
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#endif /* __BC_H__ */
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/** @} */
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/** @} */
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