106 lines
3.1 KiB
C
106 lines
3.1 KiB
C
/*
|
|
* Copyright (c) 2004, 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.
|
|
*
|
|
* Author: Adam Dunkels <adam@sics.se>
|
|
*
|
|
* $Id: abc.c,v 1.4 2007/03/15 21:24:11 adamdunkels Exp $
|
|
*/
|
|
|
|
/**
|
|
* \addtogroup rime
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* \file
|
|
* Anonymous best-effort local area Broad Cast (abc)
|
|
* \author
|
|
* Adam Dunkels <adam@sics.se>
|
|
*/
|
|
|
|
#include "contiki.h"
|
|
#include "net/rime.h"
|
|
|
|
struct abc_hdr {
|
|
u16_t channel;
|
|
};
|
|
|
|
LIST(channels);
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
abc_setup(struct abc_conn *c, u16_t channel,
|
|
const struct abc_callbacks *callbacks)
|
|
{
|
|
c->channel = channel;
|
|
c->u = callbacks;
|
|
|
|
list_add(channels, c);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
int
|
|
abc_send(struct abc_conn *c)
|
|
{
|
|
if(rimebuf_hdrextend(sizeof(struct abc_hdr))) {
|
|
struct abc_hdr *hdr = rimebuf_hdrptr();
|
|
|
|
DEBUGF(1, "%d: abc: abc_send on channel %d\n", node_id, c->channel);
|
|
|
|
hdr->channel = c->channel;
|
|
rimebuf_compact();
|
|
rime_driver_send();
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
abc_input_packet(void)
|
|
{
|
|
struct abc_hdr *hdr;
|
|
struct abc_conn *c;
|
|
|
|
hdr = rimebuf_dataptr();
|
|
|
|
DEBUGF(1, "%d: abc: abc_input_packet on channel %d\n", node_id, hdr->channel);
|
|
|
|
if(rimebuf_hdrreduce(sizeof(struct abc_hdr))) {
|
|
|
|
for(c = list_head(channels); c != NULL; c = c->next) {
|
|
if(c->channel == hdr->channel) {
|
|
c->u->recv(c);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
|
|
/** @} */
|