--- a/src/devices/csma-cd/backoff.h Mon Jul 30 14:48:56 2007 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,87 +0,0 @@
-/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
-/*
- * Copyright (c) 2007 Emmanuelle Laprise
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation;
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * Author: Emmanuelle Laprise <emmanuelle.laprise@bluekazoo.ca
- * Derived from the p2p net device file
-Transmi */
-
-#ifndef BACKOFF_H
-#define BACKOFF_H
-
-#include <stdint.h>
-#include "ns3/nstime.h"
-#include "ns3/random-variable.h"
-
-namespace ns3 {
-
- /**
- * \brief The backoff class is used for calculating backoff times
- * when many net devices can write to the same channel
- *
- */
-
-class Backoff {
-public:
- uint32_t m_minSlots; // Minimum number of backoff slots (when
- // multiplied by m_slotTime, determines minimum
- // backoff time)
- uint32_t m_maxSlots; // Maximim number of backoff slots (when
- // multiplied by m_slotTime, determines
- // maximum backoff time)
- uint32_t m_ceiling; // Caps the exponential function when the
- // number of retries reaches m_ceiling
- uint32_t m_maxRetries; // Maximum number of transmission retries
- // before the packet is dropped.
- Time m_slotTime; // Length of one slot. A slot time, it usually
- // the packet transmission time, if the packet
- // size is fixed.
-
- Backoff();
- Backoff(Time slotTime, uint32_t minSlots, uint32_t maxSlots,
- uint32_t ceiling, uint32_t maxRetries);
-
- /**
- * \return The amount of time that the net device should wait before
- * trying to retransmit the packet
- */
- Time GetBackoffTime();
- /**
- * Indicates to the backoff object that the last packet was
- * successfully transmitted and that the number of retries should be
- * reset to 0.
- */
- void ResetBackoffTime();
- /**
- * \return True if the maximum number of retries has been reached
- */
- bool MaxRetriesReached();
- /**
- * Increments the number of retries by 1.
- */
- void IncrNumRetries();
-
-private:
- uint32_t m_numBackoffRetries; // Number of times that the
- // transmitter has tried to
- // unsuccessfully transmit the current
- // packet
-};
-
-}; // namespace ns3
-
-#endif // BACKOFF_H
-