116 lines
3.7 KiB
C
116 lines
3.7 KiB
C
/*
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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: sabc.c,v 1.6 2007/03/25 12:03:41 adamdunkels Exp $
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*/
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/**
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* \file
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* Implementation of the Rime module Stubborn Anonymous
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* BroadCast (sabc)
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* \author
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* Adam Dunkels <adam@sics.se>
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*/
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#include "net/rime/sabc.h"
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#include "net/rime.h"
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#include <string.h>
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/*---------------------------------------------------------------------------*/
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static void
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recv_from_abc(struct abc_conn *abc)
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{
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register struct sabc_conn *c = (struct sabc_conn *)abc;
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/* DEBUGF(3, "sabc: recv_from_abc from %d\n", from_id);*/
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if(c->u->recv != NULL) {
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c->u->recv(c);
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}
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}
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/*---------------------------------------------------------------------------*/
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static const struct abc_callbacks sabc = {recv_from_abc};
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/*---------------------------------------------------------------------------*/
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void
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sabc_open(struct sabc_conn *c, u16_t channel,
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const struct sabc_callbacks *u)
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{
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abc_open(&c->c, channel, &sabc);
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c->u = u;
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}
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/*---------------------------------------------------------------------------*/
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void
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sabc_close(struct sabc_conn *c)
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{
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abc_close(&c->c);
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ctimer_stop(&c->t);
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}
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/*---------------------------------------------------------------------------*/
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static void
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send(void *ptr)
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{
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struct sabc_conn *c = ptr;
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/* DEBUGF(3, "sabc: send()\n");*/
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queuebuf_to_rimebuf(c->buf);
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abc_send(&c->c);
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ctimer_reset(&c->t);
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if(c->u->sent != NULL) {
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c->u->sent(c);
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}
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}
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/*---------------------------------------------------------------------------*/
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void
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sabc_set_timer(struct sabc_conn *c, clock_time_t t)
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{
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ctimer_set(&c->t, t, send, c);
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}
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/*---------------------------------------------------------------------------*/
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int
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sabc_send_stubborn(struct sabc_conn *c, clock_time_t t)
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{
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if(c->buf != NULL) {
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queuebuf_free(c->buf);
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}
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c->buf = queuebuf_new_from_rimebuf();
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if(c->buf == NULL) {
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return 0;
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}
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send(c);
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sabc_set_timer(c, t);
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return 1;
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}
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/*---------------------------------------------------------------------------*/
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void
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sabc_cancel(struct sabc_conn *c)
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{
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ctimer_stop(&c->t);
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}
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/*---------------------------------------------------------------------------*/
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