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124 lines
4.2 KiB
C
124 lines
4.2 KiB
C
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/**
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* \addtogroup rimeuc
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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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* $Id: unicast.c,v 1.4 2010/02/23 18:38:05 adamdunkels Exp $
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*/
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/**
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* \file
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* Single-hop 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.h"
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#include "net/rime/unicast.h"
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#include <string.h>
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static const struct packetbuf_attrlist attributes[] =
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{
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UNICAST_ATTRIBUTES
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PACKETBUF_ATTR_LAST
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};
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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_broadcast(struct broadcast_conn *broadcast, const rimeaddr_t *from)
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{
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struct unicast_conn *c = (struct unicast_conn *)broadcast;
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PRINTF("%d.%d: uc: recv_from_broadcast, receiver %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_RECEIVER)->u8[0],
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packetbuf_addr(PACKETBUF_ADDR_RECEIVER)->u8[1]);
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if(rimeaddr_cmp(packetbuf_addr(PACKETBUF_ADDR_RECEIVER), &rimeaddr_node_addr)) {
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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_broadcast(struct broadcast_conn *broadcast, int status, int num_tx)
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{
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struct unicast_conn *c = (struct unicast_conn *)broadcast;
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PRINTF("%d.%d: uc: sent_by_broadcast, receiver %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_RECEIVER)->u8[0],
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packetbuf_addr(PACKETBUF_ADDR_RECEIVER)->u8[1]);
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if(c->u->sent) {
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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 broadcast_callbacks uc = {recv_from_broadcast,
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sent_by_broadcast};
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/*---------------------------------------------------------------------------*/
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void
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unicast_open(struct unicast_conn *c, uint16_t channel,
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const struct unicast_callbacks *u)
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{
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broadcast_open(&c->c, channel, &uc);
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c->u = u;
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channel_set_attributes(channel, attributes);
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}
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/*---------------------------------------------------------------------------*/
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void
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unicast_close(struct unicast_conn *c)
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{
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broadcast_close(&c->c);
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}
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/*---------------------------------------------------------------------------*/
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int
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unicast_send(struct unicast_conn *c, const rimeaddr_t *receiver)
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{
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PRINTF("%d.%d: unicast_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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packetbuf_set_addr(PACKETBUF_ADDR_RECEIVER, receiver);
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return broadcast_send(&c->c);
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}
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/*---------------------------------------------------------------------------*/
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/** @} */
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