osd-contiki/core/net/rime/rime.c
2012-03-28 21:51:19 +02:00

196 lines
6.1 KiB
C

/**
* \addtogroup rime
* @{
*/
/*
* 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: rime.c,v 1.31 2010/10/03 20:10:22 adamdunkels Exp $
*/
/**
* \file
* Rime initialization and common code
* \author
* Adam Dunkels <adam@sics.se>
*/
#define DEBUG 0
#if DEBUG
#include <stdio.h>
#define PRINTF(...) printf(__VA_ARGS__)
#else
#define PRINTF(...)
#endif
#include "net/netstack.h"
#include "net/rime.h"
#include "net/rime/chameleon.h"
#include "net/rime/route.h"
#include "net/rime/announcement.h"
#include "net/rime/broadcast-announcement.h"
#include "net/mac/mac.h"
#include "lib/list.h"
#ifdef RIME_CONF_BROADCAST_ANNOUNCEMENT_CHANNEL
#define BROADCAST_ANNOUNCEMENT_CHANNEL RIME_CONF_BROADCAST_ANNOUNCEMENT_CHANNEL
#else /* RIME_CONF_BROADCAST_ANNOUNCEMENT_CHANNEL */
#define BROADCAST_ANNOUNCEMENT_CHANNEL 2
#endif /* RIME_CONF_BROADCAST_ANNOUNCEMENT_CHANNEL */
#ifdef RIME_CONF_BROADCAST_ANNOUNCEMENT_BUMP_TIME
#define BROADCAST_ANNOUNCEMENT_BUMP_TIME RIME_CONF_BROADCAST_ANNOUNCEMENT_BUMP_TIME
#else /* RIME_CONF_BROADCAST_ANNOUNCEMENT_BUMP_TIME */
#define BROADCAST_ANNOUNCEMENT_BUMP_TIME CLOCK_SECOND * 32 / NETSTACK_RDC_CHANNEL_CHECK_RATE
#endif /* RIME_CONF_BROADCAST_ANNOUNCEMENT_BUMP_TIME */
#ifdef RIME_CONF_BROADCAST_ANNOUNCEMENT_MIN_TIME
#define BROADCAST_ANNOUNCEMENT_MIN_TIME RIME_CONF_BROADCAST_ANNOUNCEMENT_MIN_TIME
#else /* RIME_CONF_BROADCAST_ANNOUNCEMENT_MIN_TIME */
#define BROADCAST_ANNOUNCEMENT_MIN_TIME CLOCK_SECOND * 60
#endif /* RIME_CONF_BROADCAST_ANNOUNCEMENT_MIN_TIME */
#ifdef RIME_CONF_BROADCAST_ANNOUNCEMENT_MAX_TIME
#define BROADCAST_ANNOUNCEMENT_MAX_TIME RIME_CONF_BROADCAST_ANNOUNCEMENT_MAX_TIME
#else /* RIME_CONF_BROADCAST_ANNOUNCEMENT_MAX_TIME */
#define BROADCAST_ANNOUNCEMENT_MAX_TIME CLOCK_SECOND * 3600UL
#endif /* RIME_CONF_BROADCAST_ANNOUNCEMENT_MAX_TIME */
LIST(sniffers);
/*---------------------------------------------------------------------------*/
void
rime_sniffer_add(struct rime_sniffer *s)
{
list_add(sniffers, s);
}
/*---------------------------------------------------------------------------*/
void
rime_sniffer_remove(struct rime_sniffer *s)
{
list_remove(sniffers, s);
}
/*---------------------------------------------------------------------------*/
static void
input(void)
{
struct rime_sniffer *s;
struct channel *c;
RIMESTATS_ADD(rx);
c = chameleon_parse();
for(s = list_head(sniffers); s != NULL; s = list_item_next(s)) {
if(s->input_callback != NULL) {
s->input_callback();
}
}
if(c != NULL) {
abc_input(c);
}
}
/*---------------------------------------------------------------------------*/
static void
init(void)
{
queuebuf_init();
packetbuf_clear();
announcement_init();
chameleon_init();
/* XXX This is initializes the transmission of announcements but it
* is not currently certain where this initialization is supposed to
* be. Also, the times are arbitrarily set for now. They should
* either be configurable, or derived from some MAC layer property
* (duty cycle, sleep time, or something similar). But this is OK
* for now, and should at least get us started with experimenting
* with announcements.
*/
broadcast_announcement_init(BROADCAST_ANNOUNCEMENT_CHANNEL,
BROADCAST_ANNOUNCEMENT_BUMP_TIME,
BROADCAST_ANNOUNCEMENT_MIN_TIME,
BROADCAST_ANNOUNCEMENT_MAX_TIME);
}
/*---------------------------------------------------------------------------*/
static void
packet_sent(void *ptr, int status, int num_tx)
{
struct channel *c = ptr;
struct rime_sniffer *s;
switch(status) {
case MAC_TX_COLLISION:
PRINTF("rime: collision after %d tx\n", num_tx);
break;
case MAC_TX_NOACK:
PRINTF("rime: noack after %d tx\n", num_tx);
break;
case MAC_TX_OK:
PRINTF("rime: sent after %d tx\n", num_tx);
break;
default:
PRINTF("rime: error %d after %d tx\n", status, num_tx);
}
/* Call sniffers, pass along the MAC status code. */
for(s = list_head(sniffers); s != NULL; s = list_item_next(s)) {
if(s->output_callback != NULL) {
s->output_callback(status);
}
}
abc_sent(c, status, num_tx);
}
/*---------------------------------------------------------------------------*/
int
rime_output(struct channel *c)
{
RIMESTATS_ADD(tx);
if(chameleon_create(c)) {
packetbuf_compact();
NETSTACK_MAC.send(packet_sent, c);
return 1;
}
return 0;
}
/*---------------------------------------------------------------------------*/
const struct network_driver rime_driver = {
"Rime",
init,
input
};
/** @} */