Contiki 2.6

nullmac.c

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00001 /*
00002  * Copyright (c) 2007, Swedish Institute of Computer Science.
00003  * All rights reserved.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions
00007  * are met:
00008  * 1. Redistributions of source code must retain the above copyright
00009  *    notice, this list of conditions and the following disclaimer.
00010  * 2. Redistributions in binary form must reproduce the above copyright
00011  *    notice, this list of conditions and the following disclaimer in the
00012  *    documentation and/or other materials provided with the distribution.
00013  * 3. Neither the name of the Institute nor the names of its contributors
00014  *    may be used to endorse or promote products derived from this software
00015  *    without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
00018  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00019  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00020  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
00021  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00022  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
00023  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
00024  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
00025  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
00026  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00027  * SUCH DAMAGE.
00028  *
00029  * This file is part of the Contiki operating system.
00030  *
00031  * $Id: nullmac.c,v 1.15 2010/06/14 19:19:17 adamdunkels Exp $
00032  */
00033 
00034 /**
00035  * \file
00036  *         A MAC protocol that does not do anything.
00037  * \author
00038  *         Adam Dunkels <adam@sics.se>
00039  */
00040 
00041 #include "net/mac/nullmac.h"
00042 #include "net/packetbuf.h"
00043 #include "net/netstack.h"
00044 
00045 /*---------------------------------------------------------------------------*/
00046 static void
00047 send_packet(mac_callback_t sent, void *ptr)
00048 {
00049   NETSTACK_RDC.send(sent, ptr);
00050 }
00051 /*---------------------------------------------------------------------------*/
00052 static void
00053 packet_input(void)
00054 {
00055   NETSTACK_NETWORK.input();
00056 }
00057 /*---------------------------------------------------------------------------*/
00058 static int
00059 on(void)
00060 {
00061   return NETSTACK_RDC.on();
00062 }
00063 /*---------------------------------------------------------------------------*/
00064 static int
00065 off(int keep_radio_on)
00066 {
00067   return NETSTACK_RDC.off(keep_radio_on);
00068 }
00069 /*---------------------------------------------------------------------------*/
00070 static unsigned short
00071 channel_check_interval(void)
00072 {
00073   return 0;
00074 }
00075 /*---------------------------------------------------------------------------*/
00076 static void
00077 init(void)
00078 {
00079 }
00080 /*---------------------------------------------------------------------------*/
00081 const struct mac_driver nullmac_driver = {
00082   "nullmac",
00083   init,
00084   send_packet,
00085   packet_input,
00086   on,
00087   off,
00088   channel_check_interval,
00089 };
00090 /*---------------------------------------------------------------------------*/