128 lines
4.1 KiB
C
128 lines
4.1 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: suc.c,v 1.5 2007/03/19 22:10:17 adamdunkels Exp $
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*/
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/**
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* \file
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* A brief description of what this file is.
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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/suc.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_uc(struct uc_conn *uc, rimeaddr_t *from)
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{
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register struct suc_conn *c = (struct suc_conn *)uc;
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DEBUGF(3, "%d: suc: recv_from_uc from %d %p\n", node_id, from_id, c);
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if(c->u->recv != NULL) {
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c->u->recv(c, from);
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}
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}
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/*---------------------------------------------------------------------------*/
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static const struct uc_callbacks suc = {recv_from_uc};
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/*---------------------------------------------------------------------------*/
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void
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suc_open(struct suc_conn *c, u16_t channel,
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const struct suc_callbacks *u)
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{
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uc_open(&c->c, channel, &suc);
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c->u = u;
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}
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/*---------------------------------------------------------------------------*/
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void
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suc_close(struct suc_conn *c)
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{
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uc_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 suc_conn *c = ptr;
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DEBUGF(3, "%d: suc: resend to %d\n", node_id, c->receiver);
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queuebuf_to_rimebuf(c->buf);
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uc_send(&c->c, &c->receiver);
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suc_set_timer(c, CLOCK_SECOND);
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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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suc_set_timer(struct suc_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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suc_send_stubborn(struct suc_conn *c, rimeaddr_t *receiver)
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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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rimeaddr_copy(&c->receiver, receiver);
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ctimer_set(&c->t, CLOCK_SECOND, send, c);
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DEBUGF(3, "%d: suc_send_stubborn to %d\n", node_id, c->receiver);
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uc_send(&c->c, &c->receiver);
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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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return 1;
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}
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/*---------------------------------------------------------------------------*/
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int
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suc_send_uc(struct suc_conn *c, rimeaddr_t *receiver)
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{
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return uc_send(&c->c, receiver);
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}
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/*---------------------------------------------------------------------------*/
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void
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suc_cancel(struct suc_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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