contiki/core/net/rime/unicast.c
2012-01-22 22:27:20 +01:00

124 lines
4.2 KiB
C

/**
* \addtogroup rimeuc
* @{
*/
/*
* 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: unicast.c,v 1.4 2010/02/23 18:38:05 adamdunkels Exp $
*/
/**
* \file
* Single-hop unicast
* \author
* Adam Dunkels <adam@sics.se>
*/
#include "net/rime.h"
#include "net/rime/unicast.h"
#include <string.h>
static const struct packetbuf_attrlist attributes[] =
{
UNICAST_ATTRIBUTES
PACKETBUF_ATTR_LAST
};
#define DEBUG 0
#if DEBUG
#include <stdio.h>
#define PRINTF(...) printf(__VA_ARGS__)
#else
#define PRINTF(...)
#endif
/*---------------------------------------------------------------------------*/
static void
recv_from_broadcast(struct broadcast_conn *broadcast, const rimeaddr_t *from)
{
struct unicast_conn *c = (struct unicast_conn *)broadcast;
PRINTF("%d.%d: uc: recv_from_broadcast, receiver %d.%d\n",
rimeaddr_node_addr.u8[0], rimeaddr_node_addr.u8[1],
packetbuf_addr(PACKETBUF_ADDR_RECEIVER)->u8[0],
packetbuf_addr(PACKETBUF_ADDR_RECEIVER)->u8[1]);
if(rimeaddr_cmp(packetbuf_addr(PACKETBUF_ADDR_RECEIVER), &rimeaddr_node_addr)) {
c->u->recv(c, from);
}
}
/*---------------------------------------------------------------------------*/
static void
sent_by_broadcast(struct broadcast_conn *broadcast, int status, int num_tx)
{
struct unicast_conn *c = (struct unicast_conn *)broadcast;
PRINTF("%d.%d: uc: sent_by_broadcast, receiver %d.%d\n",
rimeaddr_node_addr.u8[0], rimeaddr_node_addr.u8[1],
packetbuf_addr(PACKETBUF_ADDR_RECEIVER)->u8[0],
packetbuf_addr(PACKETBUF_ADDR_RECEIVER)->u8[1]);
if(c->u->sent) {
c->u->sent(c, status, num_tx);
}
}
/*---------------------------------------------------------------------------*/
static const struct broadcast_callbacks uc = {recv_from_broadcast,
sent_by_broadcast};
/*---------------------------------------------------------------------------*/
void
unicast_open(struct unicast_conn *c, uint16_t channel,
const struct unicast_callbacks *u)
{
broadcast_open(&c->c, channel, &uc);
c->u = u;
channel_set_attributes(channel, attributes);
}
/*---------------------------------------------------------------------------*/
void
unicast_close(struct unicast_conn *c)
{
broadcast_close(&c->c);
}
/*---------------------------------------------------------------------------*/
int
unicast_send(struct unicast_conn *c, const rimeaddr_t *receiver)
{
PRINTF("%d.%d: unicast_send to %d.%d\n",
rimeaddr_node_addr.u8[0],rimeaddr_node_addr.u8[1],
receiver->u8[0], receiver->u8[1]);
packetbuf_set_addr(PACKETBUF_ADDR_RECEIVER, receiver);
return broadcast_send(&c->c);
}
/*---------------------------------------------------------------------------*/
/** @} */