nes-proj/core/net/rime/rbc.c

108 lines
3.4 KiB
C

/*
* 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: rbc.c,v 1.1 2007/02/28 16:38:52 adamdunkels Exp $
*/
/**
* \file
* A brief description of what this file is.
* \author
* Adam Dunkels <adam@sics.se>
*/
#include "net/rime/rbc.h"
struct rbc_hdr {
u16_t seqno;
u16_t ackno;
};
PROCESS(rbc_process, "Reliable local broadcast");
PROCESS_THREAD(rbc_process, ev, data)
{
struct rbc_conn *c = (struct rbc_conn *)data;
u8_t *packet;
u16_t packetlen;
PROCESS_BEGIN();
while(1) {
PROCESS_WAIT_UNTIL(ev == PROCESS_EVENT_COM &&
llbc_received(&c->c, &packet, &packetlen));
printf("rbc: received %p %d\n", packet, packetlen);
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
void
rbc_setup(struct rbc_conn *c, u16_t id)
{
PROCESS_CONTEXT_BEGIN(&rbc_process);
llbc_setup(&c->c, id);
PROCESS_CONTEXT_END(&rbc_process);
}
/*---------------------------------------------------------------------------*/
static int
send(struct rbc_conn *c, struct lcpbuf *buf)
{
int r;
PROCESS_CONTEXT_BEGIN(&rbc_process);
r = llbc_send(&c->c, buf);
PROCESS_CONTEXT_END(&rbc_process);
return r;
}
/*---------------------------------------------------------------------------*/
static int
all_acked(struct rbc_conn *c)
{
return 0;
}
/*---------------------------------------------------------------------------*/
int
rbc_send(struct rbc_conn *c, struct lcpbuf *buf)
{
PT_BEGIN(&c->pt);
send(c, buf);
PT_WAIT_UNTIL(&c->pt, all_acked(c));
PT_END(&c->pt);
}
/*---------------------------------------------------------------------------*/
int
rbc_received(struct rbc_conn *c, u8_t **data, u16_t *datalen)
{
return llbc_received(c, data, datalen);
}
/*---------------------------------------------------------------------------*/