contiki/core/net/mac/phase.h
adamdunkels eb58968459 Added a timer to each phase structure that keeps track of for how long
a particular receiver has not ACKed packets. After some time
(currently 16 seconds), the sender will begin sending full strobe
periods again.
2010-09-13 13:39:05 +00:00

85 lines
3.0 KiB
C

/*
* Copyright (c) 2010, 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: phase.h,v 1.5 2010/09/13 13:39:05 adamdunkels Exp $
*/
/**
* \file
* Common functionality for phase optimization in duty cycling radio protocols
* \author
* Adam Dunkels <adam@sics.se>
*/
#ifndef PHASE_H
#define PHASE_H
#include "net/rime/rimeaddr.h"
#include "sys/timer.h"
#include "sys/rtimer.h"
#include "lib/list.h"
#include "lib/memb.h"
#include "net/netstack.h"
struct phase {
struct phase *next;
rimeaddr_t neighbor;
rtimer_clock_t time;
uint8_t noacks;
struct timer noacks_timer;
};
struct phase_list {
list_t *list;
struct memb *memb;
};
typedef enum {
PHASE_UNKNOWN,
PHASE_SEND_NOW,
PHASE_DEFERRED,
} phase_status_t;
#define PHASE_LIST(name, num) LIST(phase_list_list); \
MEMB(phase_list_memb, struct phase, num); \
struct phase_list name = { &phase_list_list, &phase_list_memb }
void phase_init(struct phase_list *list);
phase_status_t phase_wait(struct phase_list *list, const rimeaddr_t *neighbor,
rtimer_clock_t cycle_time, rtimer_clock_t wait_before,
mac_callback_t mac_callback, void *mac_callback_ptr);
void phase_update(const struct phase_list *list, const rimeaddr_t *neighbor,
rtimer_clock_t time, int mac_status);
void phase_remove(const struct phase_list *list, const rimeaddr_t *neighbor);
#endif /* PHASE_H */