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121 lines
3.8 KiB
C
121 lines
3.8 KiB
C
/*
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* Copyright (c) 2010, 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: nullrdc-framer.c,v 1.1 2010/03/01 13:30:23 nifi Exp $
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*/
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/**
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* \file
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* A null RDC implementation that uses framer for headers.
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* \author
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* Adam Dunkels <adam@sics.se>
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* Niclas Finne <nfi@sics.se>
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*/
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#include "net/mac/nullrdc-framer.h"
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#include "net/rime/packetbuf.h"
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#include "net/netstack.h"
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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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send_packet(mac_callback_t sent, void *ptr)
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{
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int ret;
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packetbuf_set_addr(PACKETBUF_ADDR_SENDER, &rimeaddr_node_addr);
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if(NETSTACK_FRAMER.create() == 0) {
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/* Failed to allocate space for headers */
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PRINTF("nullrdc_framer: send failed, too large header\n");
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ret = MAC_TX_ERR_FATAL;
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} else if(NETSTACK_RADIO.send(packetbuf_hdrptr(), packetbuf_totlen())
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== RADIO_TX_OK) {
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ret = MAC_TX_OK;
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} else {
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ret = MAC_TX_ERR;
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}
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mac_call_sent_callback(sent, ptr, ret, 1);
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}
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/*---------------------------------------------------------------------------*/
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static void
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packet_input(void)
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{
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if(NETSTACK_FRAMER.parse() == 0) {
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PRINTF("nullrdc_framer: failed to parse %u\n", packetbuf_datalen());
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} else {
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NETSTACK_MAC.input();
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}
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}
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/*---------------------------------------------------------------------------*/
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static int
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on(void)
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{
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return NETSTACK_RADIO.on();
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}
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/*---------------------------------------------------------------------------*/
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static int
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off(int keep_radio_on)
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{
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if(keep_radio_on) {
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return NETSTACK_RADIO.on();
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} else {
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return NETSTACK_RADIO.off();
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}
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}
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/*---------------------------------------------------------------------------*/
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static unsigned short
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channel_check_interval(void)
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{
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return 0;
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}
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/*---------------------------------------------------------------------------*/
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static void
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init(void)
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{
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on();
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}
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/*---------------------------------------------------------------------------*/
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const struct rdc_driver nullrdc_framer_driver = {
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"nullrdc-framer",
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init,
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send_packet,
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packet_input,
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on,
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off,
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channel_check_interval,
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};
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/*---------------------------------------------------------------------------*/
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