/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */

/*

 * Copyright (c) 2009 IITP RAS

 *

 * 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

 *

 * Authors: Kirill Andreev <andreev@iitp.ru>

 */

#include "airtime-metric.h"

#include "ns3/wifi-remote-station-manager.h"

#include "ns3/wifi-mode.h"

namespace ns3 {

namespace dot11s {

NS_OBJECT_ENSURE_REGISTERED (AirtimeLinkMetricCalculator);

TypeId

AirtimeLinkMetricCalculator::GetTypeId ()

{

  static TypeId tid = TypeId ("ns3::dot11s::AirtimeLinkMetricCalculator")

    .SetParent<Object> ()

    .AddConstructor<AirtimeLinkMetricCalculator> ()

    .AddAttribute ( "TestLength",

                    "Rate should be estimated using test length.",

                     UintegerValue (1024),

                     MakeUintegerAccessor (

                     MakeUintegerChecker<uint16_t> (1)

                  )

                    MakeUintegerAccessor (

                  )

    .AddAttribute ( "Dot11sMeshHeaderLength",

                    "Length of the mesh header",

                    UintegerValue (6),

                    MakeUintegerAccessor (

                        &AirtimeLinkMetricCalculator::m_meshHeaderLength),

                    MakeUintegerChecker<uint16_t> (0)

                  )

                  ;

  return tid;

}

AirtimeLinkMetricCalculator::AirtimeLinkMetricCalculator () :

  m_overheadNanosec (0)

void

{

}

uint32_t

AirtimeLinkMetricCalculator::CalculateMetric (Mac48Address peerAddress, Ptr<MeshWifiInterfaceMac> mac)

{

  /* Airtime link metric is defined in 11B.10 of 802.11s Draft D3.0 as:

   *

   * o  -- the PHY dependent channel access which includes frame headers, training sequences,

   *       access protocol frames, etc.

   * bt -- the test packet length in bits (8192 by default),

   * r  -- the current bitrate of the packet,

   *

   * Final result is expressed in units of 0.01 Time Unit = 10.24 us (as required by 802.11s draft)

   */

}

} //namespace dot11s

} //namespace ns3