/**
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* \addtogroup rimestunicast
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* @{
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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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*/
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/**
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* \file
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* Stubborn unicast
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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/stunicast.h"
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#include "net/rime.h"
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#include <string.h>
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#define DEBUG 0
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#if DEBUG
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#include <stdio.h>
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#define PRINTF(...) printf(__VA_ARGS__)
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#else
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#define PRINTF(...)
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#endif
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/*---------------------------------------------------------------------------*/
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static void
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recv_from_uc(struct unicast_conn *uc, const rimeaddr_t *from)
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{
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register struct stunicast_conn *c = (struct stunicast_conn *)uc;
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PRINTF("%d.%d: stunicast: recv_from_uc from %d.%d\n",
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rimeaddr_node_addr.u8[0],rimeaddr_node_addr.u8[1],
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from->u8[0], from->u8[1]);
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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 void
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sent_by_uc(struct unicast_conn *uc, int status, int num_tx)
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{
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register struct stunicast_conn *c = (struct stunicast_conn *)uc;
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PRINTF("%d.%d: stunicast: recv_from_uc from %d.%d\n",
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rimeaddr_node_addr.u8[0],rimeaddr_node_addr.u8[1],
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packetbuf_addr(PACKETBUF_ADDR_SENDER)->u8[0],
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packetbuf_addr(PACKETBUF_ADDR_SENDER)->u8[1]);
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if(c->u->sent != NULL) {
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c->u->sent(c, status, num_tx);
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}
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}
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/*---------------------------------------------------------------------------*/
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static const struct unicast_callbacks stunicast = {recv_from_uc,
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sent_by_uc};
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/*---------------------------------------------------------------------------*/
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void
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stunicast_open(struct stunicast_conn *c, uint16_t channel,
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const struct stunicast_callbacks *u)
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{
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unicast_open(&c->c, channel, &stunicast);
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c->u = u;
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}
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/*---------------------------------------------------------------------------*/
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void
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stunicast_close(struct stunicast_conn *c)
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{
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unicast_close(&c->c);
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stunicast_cancel(c);
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}
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/*---------------------------------------------------------------------------*/
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rimeaddr_t *
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stunicast_receiver(struct stunicast_conn *c)
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{
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return &c->receiver;
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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 stunicast_conn *c = ptr;
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PRINTF("%d.%d: stunicast: resend to %d.%d\n",
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rimeaddr_node_addr.u8[0],rimeaddr_node_addr.u8[1],
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c->receiver.u8[0], c->receiver.u8[1]);
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if(c->buf) {
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queuebuf_to_packetbuf(c->buf);
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unicast_send(&c->c, &c->receiver);
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stunicast_set_timer(c, CLOCK_SECOND);
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}
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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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stunicast_set_timer(struct stunicast_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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stunicast_send_stubborn(struct stunicast_conn *c, const rimeaddr_t *receiver,
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clock_time_t rxmittime)
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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_packetbuf();
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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, rxmittime, send, c);
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PRINTF("%d.%d: stunicast_send_stubborn to %d.%d\n",
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rimeaddr_node_addr.u8[0],rimeaddr_node_addr.u8[1],
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c->receiver.u8[0],c->receiver.u8[1]);
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unicast_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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stunicast_send(struct stunicast_conn *c, const rimeaddr_t *receiver)
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{
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PRINTF("%d.%d: stunicast_send to %d.%d\n",
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rimeaddr_node_addr.u8[0], rimeaddr_node_addr.u8[1],
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receiver->u8[0], receiver->u8[1]);
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return unicast_send(&c->c, receiver);
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}
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/*---------------------------------------------------------------------------*/
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void
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stunicast_cancel(struct stunicast_conn *c)
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{
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ctimer_stop(&c->t);
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if(c->buf != NULL) {
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queuebuf_free(c->buf);
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c->buf = NULL;
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}
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}
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/*---------------------------------------------------------------------------*/
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/** @} */
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