149 lines
4.9 KiB
C
149 lines
4.9 KiB
C
/**
|
|
* \addtogroup rime
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* \defgroup rime-sabc Stubborn Anonymous best-effort local area BroadCast
|
|
* @{
|
|
*
|
|
* The sabc module provides stubborn anonymous best-effort local area
|
|
* broadcast. A message sent with the sabc module is repeated until
|
|
* either the mssage is canceled or a new message is sent. Messages
|
|
* sent with the sabc module are not identified with a sender ID.
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* 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.
|
|
*
|
|
* $Id: sabc.h,v 1.2 2007/03/15 10:01:04 adamdunkels Exp $
|
|
*/
|
|
|
|
/**
|
|
* \file
|
|
* Header file for the Rime module Stubborn Anonymous BroadCast (sabc)
|
|
* \author
|
|
* Adam Dunkels <adam@sics.se>
|
|
*/
|
|
|
|
#ifndef __SABC_H__
|
|
#define __SABC_H__
|
|
|
|
#include "net/rime/uc.h"
|
|
#include "net/rime/ctimer.h"
|
|
#include "net/rime/queuebuf.h"
|
|
|
|
struct sabc_conn;
|
|
|
|
struct sabc_callbacks {
|
|
void (* recv)(struct sabc_conn *c);
|
|
void (* sent)(struct sabc_conn *c);
|
|
};
|
|
|
|
/**
|
|
* A sabc connection. This is an opaque structure with no user-visible
|
|
* fields. The sabc_setup() function is used for setting up a sabc
|
|
* connection.
|
|
*/
|
|
struct sabc_conn {
|
|
struct abc_conn c;
|
|
struct ctimer t;
|
|
struct queuebuf *buf;
|
|
const struct sabc_callbacks *u;
|
|
};
|
|
|
|
|
|
/**
|
|
* \brief Set up a sabc connection.
|
|
* \param c A pointer to a user-supplied struct sabc variable.
|
|
* \param channel The Rime channel on which messages should be sent.
|
|
* \param u Pointer to the upper layer functions that should be used
|
|
* for this connection.
|
|
*
|
|
* This function sets up a sabc connection on the
|
|
* specified channel. No checks are made if the channel is
|
|
* currently used by another connection.
|
|
*
|
|
* This function must be called before any other function
|
|
* that operates on the connection is called.
|
|
*
|
|
*/
|
|
void sabc_setup(struct sabc_conn *c, u16_t channel,
|
|
const struct sabc_callbacks *u);
|
|
|
|
|
|
/**
|
|
* \brief Send a stubborn message.
|
|
* \param c A sabc connection that must have been previously set up
|
|
* with sabc_setup()
|
|
* \param t The time between message retransmissions.
|
|
*
|
|
* This function sends a message from the Rime buffer. The
|
|
* message must have been previously constructed in the
|
|
* Rime buffer. When this function returns, the message
|
|
* has been copied into a queue buffer.
|
|
*
|
|
* If another message has previously been sent, the old
|
|
* message is canceled.
|
|
*
|
|
*/
|
|
int sabc_send_stubborn(struct sabc_conn *c, clock_time_t t);
|
|
|
|
|
|
/**
|
|
* \brief Cancel the current stubborn message.
|
|
* \param c A sabc connection that must have been previously set up
|
|
* with sabc_setup()
|
|
*
|
|
* This function cancels a stubborn message that has
|
|
* previously been sent with the sabc_send_stubborn()
|
|
* function.
|
|
*
|
|
*/
|
|
void sabc_cancel(struct sabc_conn *c);
|
|
|
|
|
|
|
|
/**
|
|
* \brief Set the retransmission time of the current stubborn message.
|
|
* \param c A sabc connection that must have been previously set up
|
|
* with sabc_setup()
|
|
* \param t The new time between message retransmissions.
|
|
*
|
|
* This function sets the retransmission timer for the
|
|
* current stubborn message to a new value.
|
|
*
|
|
*/
|
|
void sabc_set_timer(struct sabc_conn *c, clock_time_t t);
|
|
|
|
#endif /* __SABC_H__ */
|
|
|
|
/** @} */
|