nes-proj/core/net/mac/mac.h

102 lines
3.3 KiB
C

/*
* Copyright (c) 2007, 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.
*
*/
/**
* \file
* MAC driver header file
* \author
* Adam Dunkels <adam@sics.se>
*/
#ifndef MAC_H_
#define MAC_H_
#include "contiki-conf.h"
#include "dev/radio.h"
typedef void (* mac_callback_t)(void *ptr, int status, int transmissions);
void mac_call_sent_callback(mac_callback_t sent, void *ptr, int status, int num_tx);
/**
* The structure of a MAC protocol driver in Contiki.
*/
struct mac_driver {
char *name;
/** Initialize the MAC driver */
void (* init)(void);
/** Send a packet from the Rime buffer */
void (* send)(mac_callback_t sent_callback, void *ptr);
/** Callback for getting notified of incoming packet. */
void (* input)(void);
/** Turn the MAC layer on. */
int (* on)(void);
/** Turn the MAC layer off. */
int (* off)(int keep_radio_on);
/** Returns the channel check interval, expressed in clock_time_t ticks. */
unsigned short (* channel_check_interval)(void);
};
/* Generic MAC return values. */
enum {
/**< The MAC layer transmission was OK. */
MAC_TX_OK,
/**< The MAC layer transmission could not be performed due to a
collision. */
MAC_TX_COLLISION,
/**< The MAC layer did not get an acknowledgement for the packet. */
MAC_TX_NOACK,
/**< The MAC layer deferred the transmission for a later time. */
MAC_TX_DEFERRED,
/**< The MAC layer transmission could not be performed because of an
error. The upper layer may try again later. */
MAC_TX_ERR,
/**< The MAC layer transmission could not be performed because of a
fatal error. The upper layer does not need to try again, as the
error will be fatal then as well. */
MAC_TX_ERR_FATAL,
};
#endif /* MAC_H_ */