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103 lines
2.9 KiB
C
103 lines
2.9 KiB
C
/*
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* Trickle implementation
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*
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* Copyright (C) 2013, 2014 INRIA.
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @author Eric Engel <eric.engel@fu-berlin.de>
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* @author Cenk Gündoğan <cnkgndgn@gmail.com>
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*/
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "inttypes.h"
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#include "trickle.h"
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#define ENABLE_DEBUG (0)
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#include "debug.h"
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void trickle_callback(trickle_t *trickle)
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{
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/* Handle k=0 like k=infinity (according to RFC6206, section 6.5) */
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if ((trickle->c < trickle->k) || (trickle->k == 0)) {
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(*trickle->callback.func)(trickle->callback.args);
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}
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}
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void trickle_interval(trickle_t *trickle)
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{
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trickle->I = trickle->I * 2;
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DEBUG("TRICKLE new Interval %" PRIu32 "\n", trickle->I);
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if (trickle->I == 0) {
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DEBUG("%s:%d in %s: [WARNING] Interval was 0\n", RIOT_FILE_RELATIVE,
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__LINE__, DEBUG_FUNC);
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if (trickle->Imax == 0) {
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DEBUG("%s:%d in %s: [WARNING] Imax == 0\n", RIOT_FILE_RELATIVE,
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__LINE__, DEBUG_FUNC);
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}
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trickle->I = (trickle->Imin << trickle->Imax);
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}
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if (trickle->I > (trickle->Imin << trickle->Imax)) {
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trickle->I = (trickle->Imin << trickle->Imax);
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}
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trickle->c = 0;
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trickle->t = (trickle->I / 2) + (rand() % ((trickle->I / 2) + 1));
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trickle->msg_callback_time = trickle->t * SEC_IN_MS;
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xtimer_set_msg64(&trickle->msg_callback_timer, trickle->msg_callback_time,
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&trickle->msg_callback, trickle->pid);
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trickle->msg_interval_time = trickle->I * SEC_IN_MS;
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xtimer_set_msg64(&trickle->msg_interval_timer, trickle->msg_interval_time,
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&trickle->msg_interval, trickle->pid);
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}
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void trickle_reset_timer(trickle_t *trickle)
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{
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trickle_stop(trickle);
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trickle_start(trickle->pid, trickle, trickle->msg_interval.type, trickle->msg_callback.type,
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trickle->Imin, trickle->Imax, trickle->k);
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}
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void trickle_start(kernel_pid_t pid, trickle_t *trickle, uint16_t interval_msg_type,
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uint16_t callback_msg_type, uint32_t Imin, uint8_t Imax, uint8_t k)
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{
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trickle->pid = pid;
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trickle->c = 0;
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trickle->k = k;
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trickle->Imin = Imin;
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trickle->Imax = Imax;
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trickle->I = trickle->Imin + (rand() % (4 * trickle->Imin));
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trickle->pid = pid;
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trickle->msg_interval.content.ptr = (char *)trickle;
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trickle->msg_interval.type = interval_msg_type;
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trickle->msg_callback.content.ptr = (char *)trickle;
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trickle->msg_callback.type = callback_msg_type;
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trickle_interval(trickle);
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}
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void trickle_stop(trickle_t *trickle)
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{
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xtimer_remove(&trickle->msg_interval_timer);
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xtimer_remove(&trickle->msg_callback_timer);
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}
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void trickle_increment_counter(trickle_t *trickle)
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{
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trickle->c++;
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}
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