src/devices/wifi/mac-low.cc
author Federico Maguolo <maguolof@dei.unipd.it>
Fri, 22 Feb 2008 23:16:51 +0100
changeset 2348 e56aa089a268
parent 2286 3704959cf153
child 2350 0b54480c4fd1
permissions -rw-r--r--
the NAV should be updated only when the packet is _not_ addressed to us. (see section 9.2.5.4)
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/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
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/*
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 * Copyright (c) 2005,2006 INRIA
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License version 2 as 
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 * published by the Free Software Foundation;
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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 *
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 * Author: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
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 */
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#include "ns3/assert.h"
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#include "ns3/packet.h"
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#include "ns3/simulator.h"
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#include "ns3/tag.h"
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#include "ns3/log.h"
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#include "ns3/node.h"
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#include "mac-low.h"
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#include "wifi-phy.h"
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#include "wifi-mac-trailer.h"
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#include "wifi-net-device.h"
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#include "mac-stations.h"
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#include "mac-parameters.h"
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NS_LOG_COMPONENT_DEFINE ("MacLow");
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#define MY_DEBUG(x) \
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  NS_LOG_DEBUG (Simulator::Now () << " " << m_device->GetNode ()->GetId () << ":" << \
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                m_device->GetIfIndex () << " " << x)
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namespace ns3 {
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class SnrTag : public Tag
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{
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public:
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  SnrTag ();
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  SnrTag (const SnrTag &o);
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  ~SnrTag ();
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  static uint32_t GetUid (void);
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  void Print (std::ostream &os) const;
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  uint32_t GetSerializedSize (void) const;
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  void Serialize (Buffer::Iterator i) const;
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  uint32_t Deserialize (Buffer::Iterator i);
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  void Set (double snr);
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  double Get (void) const;
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private:
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  double m_snr;
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};
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SnrTag::SnrTag ()
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  : m_snr (0.0)
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{}
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SnrTag::SnrTag (const SnrTag &o)
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  : m_snr (o.m_snr)
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{}
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SnrTag::~SnrTag ()
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{}
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uint32_t 
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SnrTag::GetUid (void)
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{
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  static uint32_t uid = AllocateUid<SnrTag> ("SnrTag.ns3.inria.fr");
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  return uid;
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}
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void 
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SnrTag::Print (std::ostream &os) const
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{
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  os << "snr="<<m_snr;
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}
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uint32_t 
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SnrTag::GetSerializedSize (void) const
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{
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  return 0;
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}
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void 
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SnrTag::Serialize (Buffer::Iterator i) const
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{
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  // would need to serialize double to platform-independent format.
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}
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SnrTag::Deserialize (Buffer::Iterator i)
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{
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  // would need to deserialize double from platform-independent format.
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  return 0;
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}
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void 
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SnrTag::Set (double snr)
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{
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  m_snr = snr;
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}
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double 
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SnrTag::Get (void) const
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{
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  return m_snr;
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}
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MacLowTransmissionListener::MacLowTransmissionListener ()
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{}
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MacLowTransmissionListener::~MacLowTransmissionListener ()
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{}
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MacLowNavListener::MacLowNavListener ()
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{}
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MacLowNavListener::~MacLowNavListener ()
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{}
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MacLowTransmissionParameters::MacLowTransmissionParameters ()
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  : m_nextSize (0),
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    m_waitAck (ACK_NONE),
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    m_sendRts (false),
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    m_overrideDurationId (Seconds (0))
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{}
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void 
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MacLowTransmissionParameters::EnableNextData (uint32_t size)
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{
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  m_nextSize = size;
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}
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void 
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MacLowTransmissionParameters::DisableNextData (void)
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{
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  m_nextSize = 0;
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}
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void 
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MacLowTransmissionParameters::EnableOverrideDurationId (Time durationId)
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{
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  m_overrideDurationId = durationId;
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}
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void 
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MacLowTransmissionParameters::DisableOverrideDurationId (void)
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{
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  m_overrideDurationId = Seconds (0);
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}
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void 
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MacLowTransmissionParameters::EnableSuperFastAck (void)
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{
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  m_waitAck = ACK_SUPER_FAST;
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}
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void 
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MacLowTransmissionParameters::EnableFastAck (void)
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{
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  m_waitAck = ACK_FAST;
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}
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void 
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MacLowTransmissionParameters::EnableAck (void)
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{
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  m_waitAck = ACK_NORMAL;
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}
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void 
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MacLowTransmissionParameters::DisableAck (void)
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{
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  m_waitAck = ACK_NONE;
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}
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void 
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MacLowTransmissionParameters::EnableRts (void)
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{
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  m_sendRts = true;
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}
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void 
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MacLowTransmissionParameters::DisableRts (void)
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{
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  m_sendRts = false;
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}
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bool 
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MacLowTransmissionParameters::MustWaitAck (void) const
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{
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  return (m_waitAck != ACK_NONE)?true:false;
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}
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bool 
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MacLowTransmissionParameters::MustWaitNormalAck (void) const
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{
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  return (m_waitAck == ACK_NORMAL)?true:false;
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}
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bool 
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MacLowTransmissionParameters::MustWaitFastAck (void) const
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{
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  return (m_waitAck == ACK_FAST)?true:false;
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}
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bool 
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MacLowTransmissionParameters::MustWaitSuperFastAck (void) const
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{
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  return (m_waitAck == ACK_SUPER_FAST)?true:false;
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}
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bool 
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MacLowTransmissionParameters::MustSendRts (void) const
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{
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  return m_sendRts;
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}
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bool 
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MacLowTransmissionParameters::HasDurationId (void) const
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{
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  return (m_overrideDurationId != Seconds (0))?true:false;
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}
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Time
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MacLowTransmissionParameters::GetDurationId (void) const
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{
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  NS_ASSERT (m_overrideDurationId != Seconds (0));
1922
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  return m_overrideDurationId;
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}
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bool 
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MacLowTransmissionParameters::HasNextPacket (void) const
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{
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  return (m_nextSize != 0)?true:false;
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   213
}
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uint32_t 
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MacLowTransmissionParameters::GetNextPacketSize (void) const
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{
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0d6b3bead74a replace cassert by ns3/assert.h
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   217
  NS_ASSERT (HasNextPacket ());
1922
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  return m_nextSize;
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   219
}
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   220
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   221
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   222
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   223
MacLow::MacLow ()
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  : m_normalAckTimeoutEvent (),
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   225
    m_fastAckTimeoutEvent (),
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    m_superFastAckTimeoutEvent (),
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    m_fastAckFailedTimeoutEvent (),
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    m_ctsTimeoutEvent (),
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   229
    m_sendCtsEvent (),
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   230
    m_sendAckEvent (),
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   231
    m_sendDataEvent (),
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   232
    m_waitSifsEvent (),
2286
3704959cf153 ensure m_listener is initialized properly
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   233
    m_currentPacket (0),
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   234
    m_listener (0)
1922
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   235
{
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   236
  m_lastNavDuration = Seconds (0);
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   237
  m_lastNavStart = Seconds (0);
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   238
}
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   239
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   240
MacLow::~MacLow ()
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   241
{
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   242
  CancelAllEvents ();
2054
ba8e810bae4c derive WifiPhy from Object and manage it with a Ptr<>
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   243
  m_phy = 0;
1922
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   244
}
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   245
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   246
void
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   247
MacLow::CancelAllEvents (void)
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   248
{
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   249
  bool oneRunning = false;
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   250
  if (m_normalAckTimeoutEvent.IsRunning ()) 
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   251
    {
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   252
      m_normalAckTimeoutEvent.Cancel ();
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   253
      oneRunning = true;
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   254
    }
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   255
  if (m_fastAckTimeoutEvent.IsRunning ()) 
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parents:
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   256
    {
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   257
      m_fastAckTimeoutEvent.Cancel ();
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   258
      oneRunning = true;
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   259
    }
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   260
  if (m_superFastAckTimeoutEvent.IsRunning ()) 
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parents:
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   261
    {
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   262
      m_superFastAckTimeoutEvent.Cancel ();
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   263
      oneRunning = true;
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   264
    }
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   265
  if (m_fastAckFailedTimeoutEvent.IsRunning ()) 
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parents:
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   266
    {
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   267
      m_fastAckFailedTimeoutEvent.Cancel ();
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   268
      oneRunning = true;
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   269
    }
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   270
  if (m_ctsTimeoutEvent.IsRunning ()) 
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   271
    {
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   272
      m_ctsTimeoutEvent.Cancel ();
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   273
      oneRunning = true;
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   274
    }
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   275
  if (m_sendCtsEvent.IsRunning ()) 
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parents:
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   276
    {
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   277
      m_sendCtsEvent.Cancel ();
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   278
      oneRunning = true;
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   279
    }
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   280
  if (m_sendAckEvent.IsRunning ()) 
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parents:
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   281
    {
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parents:
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   282
      m_sendAckEvent.Cancel ();
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parents:
diff changeset
   283
      oneRunning = true;
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parents:
diff changeset
   284
    }
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parents:
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   285
  if (m_sendDataEvent.IsRunning ()) 
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parents:
diff changeset
   286
    {
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parents:
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   287
      m_sendDataEvent.Cancel ();
dd18bc29fc3c add MacLow to build
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parents:
diff changeset
   288
      oneRunning = true;
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parents:
diff changeset
   289
    }
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parents:
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   290
  if (m_waitSifsEvent.IsRunning ()) 
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parents:
diff changeset
   291
    {
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parents:
diff changeset
   292
      m_waitSifsEvent.Cancel ();
dd18bc29fc3c add MacLow to build
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parents:
diff changeset
   293
      oneRunning = true;
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parents:
diff changeset
   294
    }
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parents:
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   295
  if (oneRunning && m_listener != 0) 
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parents:
diff changeset
   296
    {
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parents:
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   297
      m_listener->Cancel ();
2286
3704959cf153 ensure m_listener is initialized properly
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parents: 2268
diff changeset
   298
      m_listener = 0;
1922
dd18bc29fc3c add MacLow to build
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parents:
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   299
    }
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   300
}
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   301
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parents:
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   302
/****************************************************************************
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parents:
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   303
 *  API methods below.
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parents:
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   304
 ****************************************************************************/
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parents:
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   305
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   306
void
1964
041240a915f8 build and link
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parents: 1928
diff changeset
   307
MacLow::SetDevice (Ptr<WifiNetDevice> device)
1922
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parents:
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   308
{
1964
041240a915f8 build and link
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diff changeset
   309
  m_device = device;
1922
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parents:
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   310
}
2146
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parents: 2088
diff changeset
   311
Ptr<NetDevice> 
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parents: 2088
diff changeset
   312
MacLow::GetDevice (void) const
40ad60ac9912 replace Dcf with DcfManager
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parents: 2088
diff changeset
   313
{
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parents: 2088
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   314
  return m_device;
40ad60ac9912 replace Dcf with DcfManager
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parents: 2088
diff changeset
   315
}
1922
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parents:
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   316
void
2054
ba8e810bae4c derive WifiPhy from Object and manage it with a Ptr<>
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2024
diff changeset
   317
MacLow::SetPhy (Ptr<WifiPhy> phy)
1922
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parents:
diff changeset
   318
{
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parents:
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   319
  m_phy = phy;
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parents:
diff changeset
   320
}
dd18bc29fc3c add MacLow to build
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parents:
diff changeset
   321
void 
dd18bc29fc3c add MacLow to build
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parents:
diff changeset
   322
MacLow::SetParameters (MacParameters *parameters)
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   323
{
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parents:
diff changeset
   324
  m_parameters = parameters;
dd18bc29fc3c add MacLow to build
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parents:
diff changeset
   325
}
dd18bc29fc3c add MacLow to build
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parents:
diff changeset
   326
void 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   327
MacLow::SetStations (MacStations *stations)
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   328
{
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   329
  m_stations = stations;
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   330
}
dd18bc29fc3c add MacLow to build
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parents:
diff changeset
   331
void 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   332
MacLow::SetRxCallback (MacLowRxCallback callback)
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   333
{
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   334
  m_rxCallback = callback;
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   335
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   336
void 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   337
MacLow::RegisterNavListener (MacLowNavListener *listener)
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   338
{
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   339
  m_navListeners.push_back (listener);
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   340
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   341
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   342
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   343
void 
2159
20f882e85b4a port to Ptr<Packet> branch
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2147
diff changeset
   344
MacLow::StartTransmission (Ptr<const Packet> packet, 
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   345
                           WifiMacHeader const*hdr, 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   346
                           MacLowTransmissionParameters parameters,
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   347
                           MacLowTransmissionListener *listener)
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   348
{
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   349
  /* m_currentPacket is not NULL because someone started
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   350
   * a transmission and was interrupted before one of:
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   351
   *   - ctsTimeout
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   352
   *   - sendDataAfterCTS
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   353
   * expired. This means that one of these timers is still
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   354
   * running. They are all cancelled below anyway by the 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   355
   * call to CancelAllEvents (because of at least one
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   356
   * of these two timer) which will trigger a call to the
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   357
   * previous listener's cancel method.
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   358
   *
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   359
   * This typically happens because the high-priority 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   360
   * QapScheduler has taken access to the channel from
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   361
   * one of the Edca of the QAP.
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   362
   */
2159
20f882e85b4a port to Ptr<Packet> branch
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2147
diff changeset
   363
  m_currentPacket = packet->Copy ();
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   364
  m_currentHdr = *hdr;
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   365
  CancelAllEvents ();
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   366
  m_listener = listener;
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   367
  m_txParams = parameters;
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   368
1974
0d6b3bead74a replace cassert by ns3/assert.h
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1964
diff changeset
   369
  //NS_ASSERT (m_phy->IsStateIdle ());
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   370
2268
0e57ac711220 introduce a low latency parameter for rate control algorithms
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2177
diff changeset
   371
  MY_DEBUG ("startTx size="<< GetSize (m_currentPacket, &m_currentHdr) << 
0e57ac711220 introduce a low latency parameter for rate control algorithms
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2177
diff changeset
   372
            ", to=" << m_currentHdr.GetAddr1()<<", listener="<<m_listener);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   373
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   374
  if (m_txParams.MustSendRts ()) 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   375
    {
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   376
      SendRtsForPacket ();
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   377
    } 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   378
  else 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   379
    {
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   380
      SendDataPacket ();
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   381
    }
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   382
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   383
  /* When this method completes, we have taken ownership of the medium. */
1974
0d6b3bead74a replace cassert by ns3/assert.h
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1964
diff changeset
   384
  NS_ASSERT (m_phy->IsStateTx ());  
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   385
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   386
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   387
void
2159
20f882e85b4a port to Ptr<Packet> branch
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2147
diff changeset
   388
MacLow::ReceiveError (Ptr<Packet> packet, double rxSnr)
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   389
{
1993
e665fb7cea73 add time to debug output
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1990
diff changeset
   390
  MY_DEBUG ("rx failed ");
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   391
  m_dropError (packet);
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   392
  if (m_txParams.MustWaitFastAck ()) 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   393
    {
1974
0d6b3bead74a replace cassert by ns3/assert.h
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1964
diff changeset
   394
      NS_ASSERT (m_fastAckFailedTimeoutEvent.IsExpired ());
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   395
      m_fastAckFailedTimeoutEvent = Simulator::Schedule (GetSifs (), 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   396
                                                         &MacLow::FastAckFailedTimeout, this);
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   397
    }
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   398
  return;
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   399
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   400
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   401
void 
2159
20f882e85b4a port to Ptr<Packet> branch
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2147
diff changeset
   402
MacLow::ReceiveOk (Ptr<Packet> packet, double rxSnr, WifiMode txMode, WifiPreamble preamble)
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   403
{
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   404
  /* A packet is received from the PHY.
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   405
   * When we have handled this packet,
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   406
   * we handle any packet present in the
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   407
   * packet queue.
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   408
   */
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   409
  WifiMacHeader hdr;
2159
20f882e85b4a port to Ptr<Packet> branch
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2147
diff changeset
   410
  packet->RemoveHeader (hdr);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   411
  
2146
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   412
  bool isPrevNavZero = IsNavZero ();
1993
e665fb7cea73 add time to debug output
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1990
diff changeset
   413
  MY_DEBUG ("duration/id=" << hdr.GetDuration ());
2146
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   414
  NotifyNav (hdr, txMode, preamble);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   415
  if (hdr.IsRts ()) 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   416
    {
2146
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   417
      /* see section 9.2.5.7 802.11-1999
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   418
       * A STA that is addressed by an RTS frame shall transmit a CTS frame after a SIFS 
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   419
       * period if the NAV at the STA receiving the RTS frame indicates that the medium is 
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   420
       * idle. If the NAV at the STA receiving the RTS indicates the medium is not idle, 
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   421
       * that STA shall not respond to the RTS frame.
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   422
       */
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   423
      if (isPrevNavZero &&
1964
041240a915f8 build and link
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1928
diff changeset
   424
          hdr.GetAddr1 () == m_device->GetSelfAddress ()) 
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   425
        {
1993
e665fb7cea73 add time to debug output
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1990
diff changeset
   426
          MY_DEBUG ("rx RTS from=" << hdr.GetAddr2 () << ", schedule CTS");
1974
0d6b3bead74a replace cassert by ns3/assert.h
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1964
diff changeset
   427
          NS_ASSERT (m_sendCtsEvent.IsExpired ());
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   428
          MacStation *station = m_stations->Lookup (hdr.GetAddr2 ());
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   429
          station->ReportRxOk (rxSnr, txMode);
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   430
          m_sendCtsEvent = Simulator::Schedule (GetSifs (),
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   431
                                                &MacLow::SendCtsAfterRts, this,
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   432
                                                hdr.GetAddr2 (), 
2022
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
   433
                                                hdr.GetDuration (),
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
   434
                                                txMode,
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   435
                                                rxSnr);
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   436
        } 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   437
      else 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   438
        {
1993
e665fb7cea73 add time to debug output
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1990
diff changeset
   439
          MY_DEBUG ("rx RTS from=" << hdr.GetAddr2 () << ", cannot schedule CTS");
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   440
        }
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   441
    } 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   442
  else if (hdr.IsCts () &&
1964
041240a915f8 build and link
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1928
diff changeset
   443
           hdr.GetAddr1 () == m_device->GetSelfAddress () &&
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   444
           m_ctsTimeoutEvent.IsRunning () &&
2159
20f882e85b4a port to Ptr<Packet> branch
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2147
diff changeset
   445
           m_currentPacket != 0) 
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   446
    {
1993
e665fb7cea73 add time to debug output
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1990
diff changeset
   447
      MY_DEBUG ("receive cts from="<<m_currentHdr.GetAddr1 ());
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   448
      SnrTag tag;
2159
20f882e85b4a port to Ptr<Packet> branch
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2147
diff changeset
   449
      packet->PeekTag (tag);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   450
      MacStation *station = GetStation (m_currentHdr.GetAddr1 ());
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   451
      station->ReportRxOk (rxSnr, txMode);
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   452
      station->ReportRtsOk (rxSnr, txMode, tag.Get ());
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   453
      
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   454
      m_ctsTimeoutEvent.Cancel ();
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   455
      m_listener->GotCts (rxSnr, txMode);
1974
0d6b3bead74a replace cassert by ns3/assert.h
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1964
diff changeset
   456
      NS_ASSERT (m_sendDataEvent.IsExpired ());
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   457
      m_sendDataEvent = Simulator::Schedule (GetSifs (), 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   458
                                             &MacLow::SendDataAfterCts, this, 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   459
                                             hdr.GetAddr1 (),
2022
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
   460
                                             hdr.GetDuration (),
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   461
                                             txMode);
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   462
    } 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   463
  else if (hdr.IsAck () &&
1964
041240a915f8 build and link
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1928
diff changeset
   464
           hdr.GetAddr1 () == m_device->GetSelfAddress () &&
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   465
           (m_normalAckTimeoutEvent.IsRunning () || 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   466
            m_fastAckTimeoutEvent.IsRunning () ||
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   467
            m_superFastAckTimeoutEvent.IsRunning ()) &&
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   468
           m_txParams.MustWaitAck ()) 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   469
    {
1993
e665fb7cea73 add time to debug output
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1990
diff changeset
   470
      MY_DEBUG ("receive ack from="<<m_currentHdr.GetAddr1 ());
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   471
      SnrTag tag;
2159
20f882e85b4a port to Ptr<Packet> branch
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2147
diff changeset
   472
      packet->PeekTag (tag);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   473
      MacStation *station = GetStation (m_currentHdr.GetAddr1 ());
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   474
      station->ReportRxOk (rxSnr, txMode);
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   475
      station->ReportDataOk (rxSnr, txMode, tag.Get ());
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   476
      bool gotAck = false;
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   477
      if (m_txParams.MustWaitNormalAck () &&
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   478
          m_normalAckTimeoutEvent.IsRunning ()) 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   479
        {
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   480
          m_normalAckTimeoutEvent.Cancel ();
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   481
          gotAck = true;
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   482
        }
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   483
      if (m_txParams.MustWaitFastAck () &&
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   484
          m_fastAckTimeoutEvent.IsRunning ()) 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   485
        {
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   486
          m_fastAckTimeoutEvent.Cancel ();
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   487
          gotAck = true;
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   488
        }
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   489
      if (gotAck) 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   490
        {
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   491
          m_listener->GotAck (rxSnr, txMode);
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   492
        }
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   493
    if (m_txParams.HasNextPacket ()) 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   494
      {
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   495
        m_waitSifsEvent = Simulator::Schedule (GetSifs (), 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   496
                                               &MacLow::WaitSifsAfterEndTx, this);
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   497
      }
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   498
    } 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   499
  else if (hdr.IsCtl ()) 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   500
    {
1993
e665fb7cea73 add time to debug output
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1990
diff changeset
   501
      MY_DEBUG ("rx drop " << hdr.GetTypeString ());
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   502
    } 
1964
041240a915f8 build and link
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1928
diff changeset
   503
  else if (hdr.GetAddr1 () == m_device->GetSelfAddress ()) 
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   504
    {
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   505
      MacStation *station = GetStation (hdr.GetAddr2 ());
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   506
      station->ReportRxOk (rxSnr, txMode);
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   507
      
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   508
      if (hdr.IsQosData () && hdr.IsQosNoAck ()) 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   509
        {
1993
e665fb7cea73 add time to debug output
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1990
diff changeset
   510
          MY_DEBUG ("rx unicast/noAck from="<<hdr.GetAddr2 ());
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   511
        } 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   512
      else if (hdr.IsData () || hdr.IsMgt ()) 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   513
        {
1993
e665fb7cea73 add time to debug output
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1990
diff changeset
   514
          MY_DEBUG ("rx unicast/sendAck from=" << hdr.GetAddr2 ());
1974
0d6b3bead74a replace cassert by ns3/assert.h
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1964
diff changeset
   515
          NS_ASSERT (m_sendAckEvent.IsExpired ());
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   516
          m_sendAckEvent = Simulator::Schedule (GetSifs (),
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   517
                                                &MacLow::SendAckAfterData, this,
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   518
                                                hdr.GetAddr2 (), 
2022
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
   519
                                                hdr.GetDuration (),
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
   520
                                                txMode,
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   521
                                                rxSnr);
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   522
        }
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   523
      goto rxPacket;
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   524
    } 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   525
  else if (hdr.GetAddr1 ().IsBroadcast ()) 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   526
    {
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   527
      if (hdr.IsData () || hdr.IsMgt ()) 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   528
        {
1993
e665fb7cea73 add time to debug output
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1990
diff changeset
   529
          MY_DEBUG ("rx broadcast from=" << hdr.GetAddr2 ());
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   530
          goto rxPacket;
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   531
        } 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   532
      else 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   533
        {
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   534
          // DROP.
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   535
        }
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   536
    } 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   537
  else 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   538
    {
1993
e665fb7cea73 add time to debug output
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1990
diff changeset
   539
      //MY_DEBUG_VERBOSE ("rx not-for-me from %d", GetSource (packet));
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   540
    }
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   541
  return;
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   542
 rxPacket:
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   543
  WifiMacTrailer fcs;
2159
20f882e85b4a port to Ptr<Packet> branch
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2147
diff changeset
   544
  packet->RemoveTrailer (fcs);
1964
041240a915f8 build and link
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1928
diff changeset
   545
  m_rxCallback (packet, &hdr);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   546
  return;
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   547
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   548
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   549
uint32_t 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   550
MacLow::GetAckSize (void) const
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   551
{
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   552
  WifiMacHeader ack;
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   553
  ack.SetType (WIFI_MAC_CTL_ACK);
1996
454a63cf6549 cts, rts, and ack sizes must take into account fcs padding
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1993
diff changeset
   554
  return ack.GetSize () + 4;
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   555
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   556
uint32_t 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   557
MacLow::GetRtsSize (void) const
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   558
{
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   559
  WifiMacHeader rts;
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   560
  rts.SetType (WIFI_MAC_CTL_RTS);
1996
454a63cf6549 cts, rts, and ack sizes must take into account fcs padding
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1993
diff changeset
   561
  return rts.GetSize () + 4;
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   562
}
2022
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
   563
Time
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
   564
MacLow::GetAckDuration (Mac48Address to, WifiMode dataTxMode) const
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
   565
{
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
   566
  WifiMode ackMode = GetAckTxModeForData (to, dataTxMode);
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
   567
  return m_phy->CalculateTxDuration (GetAckSize (), ackMode, WIFI_PREAMBLE_LONG);
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
   568
}
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
   569
Time
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
   570
MacLow::GetCtsDuration (Mac48Address to, WifiMode rtsTxMode) const
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
   571
{
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
   572
  WifiMode ctsMode = GetCtsTxModeForRts (to, rtsTxMode);
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
   573
  return m_phy->CalculateTxDuration (GetCtsSize (), ctsMode, WIFI_PREAMBLE_LONG);
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
   574
}
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   575
uint32_t 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   576
MacLow::GetCtsSize (void) const
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   577
{
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   578
  WifiMacHeader cts;
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   579
  cts.SetType (WIFI_MAC_CTL_CTS);
1996
454a63cf6549 cts, rts, and ack sizes must take into account fcs padding
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1993
diff changeset
   580
  return cts.GetSize () + 4;
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   581
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   582
Time
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   583
MacLow::GetSifs (void) const
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   584
{
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   585
  return m_parameters->GetSifs ();
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   586
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   587
Time
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   588
MacLow::GetPifs (void) const
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   589
{
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   590
  return m_parameters->GetPifs ();
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   591
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   592
Time
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   593
MacLow::GetAckTimeout (void) const
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   594
{
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   595
  return m_parameters->GetAckTimeout ();
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   596
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   597
Time
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   598
MacLow::GetCtsTimeout (void) const
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   599
{
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   600
  return m_parameters->GetCtsTimeout ();
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   601
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   602
uint32_t 
2268
0e57ac711220 introduce a low latency parameter for rate control algorithms
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2177
diff changeset
   603
MacLow::GetSize (Ptr<const Packet> packet, const WifiMacHeader *hdr) const
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   604
{
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   605
  WifiMacTrailer fcs;
2268
0e57ac711220 introduce a low latency parameter for rate control algorithms
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2177
diff changeset
   606
  return packet->GetSize () + hdr->GetSize () + fcs.GetSerializedSize ();
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   607
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   608
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   609
WifiMode
2268
0e57ac711220 introduce a low latency parameter for rate control algorithms
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2177
diff changeset
   610
MacLow::GetRtsTxMode (Ptr<const Packet> packet, const WifiMacHeader *hdr) const
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   611
{
2268
0e57ac711220 introduce a low latency parameter for rate control algorithms
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2177
diff changeset
   612
  Mac48Address to = hdr->GetAddr1 ();
0e57ac711220 introduce a low latency parameter for rate control algorithms
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2177
diff changeset
   613
  return GetStation (to)->GetRtsMode (packet);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   614
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   615
WifiMode
2268
0e57ac711220 introduce a low latency parameter for rate control algorithms
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2177
diff changeset
   616
MacLow::GetDataTxMode (Ptr<const Packet> packet, const WifiMacHeader *hdr) const
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   617
{
2268
0e57ac711220 introduce a low latency parameter for rate control algorithms
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2177
diff changeset
   618
  Mac48Address to = hdr->GetAddr1 ();
0e57ac711220 introduce a low latency parameter for rate control algorithms
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2177
diff changeset
   619
  WifiMacTrailer fcs;
0e57ac711220 introduce a low latency parameter for rate control algorithms
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2177
diff changeset
   620
  uint32_t size =  packet->GetSize () + hdr->GetSize () + fcs.GetSerializedSize ();
0e57ac711220 introduce a low latency parameter for rate control algorithms
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2177
diff changeset
   621
  return GetStation (to)->GetDataMode (packet, size);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   622
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   623
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   624
WifiMode
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   625
MacLow::GetCtsTxModeForRts (Mac48Address to, WifiMode rtsTxMode) const
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   626
{
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   627
  return GetStation (to)->GetCtsMode (rtsTxMode);
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   628
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   629
WifiMode
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   630
MacLow::GetAckTxModeForData (Mac48Address to, WifiMode dataTxMode) const
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   631
{
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   632
  return GetStation (to)->GetAckMode (dataTxMode);
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   633
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   634
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   635
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   636
Time
2268
0e57ac711220 introduce a low latency parameter for rate control algorithms
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2177
diff changeset
   637
MacLow::CalculateOverallTxTime (Ptr<const Packet> packet,
0e57ac711220 introduce a low latency parameter for rate control algorithms
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2177
diff changeset
   638
                                WifiMacHeader const*hdr, 
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   639
                                MacLowTransmissionParameters const& params) const
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   640
{
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   641
  Time txTime = Seconds (0);
2268
0e57ac711220 introduce a low latency parameter for rate control algorithms
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2177
diff changeset
   642
  WifiMode rtsMode = GetRtsTxMode (packet, hdr);
0e57ac711220 introduce a low latency parameter for rate control algorithms
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2177
diff changeset
   643
  WifiMode dataMode = GetDataTxMode (packet, hdr);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   644
  if (params.MustSendRts ()) 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   645
    {
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   646
      txTime += m_phy->CalculateTxDuration (GetRtsSize (), rtsMode, WIFI_PREAMBLE_LONG);
2268
0e57ac711220 introduce a low latency parameter for rate control algorithms
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2177
diff changeset
   647
      txTime += GetCtsDuration (hdr->GetAddr1 (), rtsMode);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   648
      txTime += GetSifs () * Scalar (2);
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   649
    }
2268
0e57ac711220 introduce a low latency parameter for rate control algorithms
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2177
diff changeset
   650
  uint32_t dataSize = GetSize (packet, hdr);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   651
  txTime += m_phy->CalculateTxDuration (dataSize, dataMode, WIFI_PREAMBLE_LONG);
1996
454a63cf6549 cts, rts, and ack sizes must take into account fcs padding
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1993
diff changeset
   652
  if (params.MustWaitAck ())
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   653
    {
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   654
      txTime += GetSifs ();
2268
0e57ac711220 introduce a low latency parameter for rate control algorithms
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2177
diff changeset
   655
      txTime += GetAckDuration (hdr->GetAddr1 (), dataMode);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   656
    }
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   657
  return txTime;
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   658
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   659
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   660
Time
2268
0e57ac711220 introduce a low latency parameter for rate control algorithms
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2177
diff changeset
   661
MacLow::CalculateTransmissionTime (Ptr<const Packet> packet,
0e57ac711220 introduce a low latency parameter for rate control algorithms
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2177
diff changeset
   662
                                   WifiMacHeader const*hdr, 
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   663
                                   MacLowTransmissionParameters const& params) const
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   664
{
2268
0e57ac711220 introduce a low latency parameter for rate control algorithms
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2177
diff changeset
   665
  Time txTime = CalculateOverallTxTime (packet, hdr, params);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   666
  if (params.HasNextPacket ()) 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   667
    {
2268
0e57ac711220 introduce a low latency parameter for rate control algorithms
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2177
diff changeset
   668
      WifiMode dataMode = GetDataTxMode (packet, hdr);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   669
      txTime += GetSifs ();
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   670
      txTime += m_phy->CalculateTxDuration (params.GetNextPacketSize (), dataMode, WIFI_PREAMBLE_LONG);
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   671
    }
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   672
  return txTime;
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   673
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   674
2146
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   675
void
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   676
MacLow::NotifyNav (const WifiMacHeader &hdr, WifiMode txMode, WifiPreamble preamble)
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   677
{
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   678
  NS_ASSERT (m_lastNavStart <= Simulator::Now ());
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   679
  Time duration = hdr.GetDuration ();
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   680
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   681
  if (hdr.IsCfpoll () &&
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   682
      hdr.GetAddr2 () == m_device->GetBssid ()) 
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   683
    {
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   684
      // see section 9.3.2.2 802.11-1999
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   685
      DoNavResetNow (duration);
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   686
      return;
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   687
    }
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   688
  // XXX Note that we should also handle CF_END specially here
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   689
  // but we don't for now because we do not generate them.
2348
e56aa089a268 the NAV should be updated only when the packet is _not_ addressed to us. (see section 9.2.5.4)
Federico Maguolo <maguolof@dei.unipd.it>
parents: 2286
diff changeset
   690
  else if (hdr.GetAddr1 () != m_device->GetSelfAddress ())
2146
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   691
    {
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   692
      // see section 9.2.5.4 802.11-1999
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   693
      bool navUpdated = DoNavStartNow (duration);
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   694
      if (hdr.IsRts () && navUpdated)
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   695
        {
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   696
          /**
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   697
           * A STA that used information from an RTS frame as the most recent basis to update its NAV setting 
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   698
           * is permitted to reset its NAV if no PHY-RXSTART.indication is detected from the PHY during a 
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   699
           * period with a duration of (2 * aSIFSTime) + (CTS_Time) + (2 * aSlotTime) starting at the 
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   700
           * PHY-RXEND.indication corresponding to the detection of the RTS frame. The “CTS_Time” shall 
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   701
           * be calculated using the length of the CTS frame and the data rate at which the RTS frame 
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   702
           * used for the most recent NAV update was received.
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   703
           */
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   704
          WifiMacHeader cts;
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   705
          cts.SetType (WIFI_MAC_CTL_CTS);
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   706
          Time navCounterResetCtsMissedDelay = 
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   707
            m_phy->CalculateTxDuration (cts.GetSerializedSize (), txMode, preamble) +
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   708
            Scalar (2) * m_parameters->GetSifs () + Scalar (2) * m_parameters->GetSlotTime ();
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   709
          m_navCounterResetCtsMissed = Simulator::Schedule (navCounterResetCtsMissedDelay,
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   710
                                                            &MacLow::NavCounterResetCtsMissed, this,
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   711
                                                            Simulator::Now ());
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   712
        }
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   713
    }
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   714
}
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   715
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   716
void
2146
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   717
MacLow::NavCounterResetCtsMissed (Time rtsEndRxTime)
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   718
{
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   719
  if (m_phy->GetLastRxStartTime () > rtsEndRxTime)
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   720
    {
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   721
      DoNavResetNow (Seconds (0.0));
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   722
    }
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   723
}
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   724
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   725
void
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   726
MacLow::DoNavResetNow (Time duration)
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   727
{
2146
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   728
  for (NavListenersCI i = m_navListeners.begin (); i != m_navListeners.end (); i++) 
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   729
    {
2146
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   730
      (*i)->NavReset (duration);
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   731
    }
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   732
  m_lastNavStart = Simulator::Now ();
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   733
  m_lastNavStart = duration;
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   734
}
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   735
bool
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   736
MacLow::DoNavStartNow (Time duration)
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   737
{
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   738
  for (NavListenersCI i = m_navListeners.begin (); i != m_navListeners.end (); i++) 
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   739
    {
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   740
      (*i)->NavStart (duration);
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   741
    }
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   742
  Time newNavEnd = Simulator::Now () + duration;
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   743
  Time oldNavEnd = m_lastNavStart + m_lastNavDuration;
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   744
  if (newNavEnd > oldNavEnd)
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   745
    {
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   746
      m_lastNavStart = Simulator::Now ();
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   747
      m_lastNavDuration = duration;
2146
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   748
      return true;
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   749
    }
2146
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   750
  return false;
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   751
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   752
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   753
void
2159
20f882e85b4a port to Ptr<Packet> branch
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2147
diff changeset
   754
MacLow::ForwardDown (Ptr<const Packet> packet, WifiMacHeader const* hdr, 
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   755
                     WifiMode txMode)
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   756
{
2023
df3bd08f1173 simplify logging output
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2022
diff changeset
   757
  MY_DEBUG ("send " << hdr->GetTypeString () <<
df3bd08f1173 simplify logging output
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2022
diff changeset
   758
            ", to=" << hdr->GetAddr1 () <<
2159
20f882e85b4a port to Ptr<Packet> branch
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2147
diff changeset
   759
            ", size=" << packet->GetSize () <<
2023
df3bd08f1173 simplify logging output
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2022
diff changeset
   760
            ", mode=" << txMode <<
df3bd08f1173 simplify logging output
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2022
diff changeset
   761
            ", duration=" << hdr->GetDuration () <<
df3bd08f1173 simplify logging output
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2022
diff changeset
   762
            ", seq=0x"<< std::hex << m_currentHdr.GetSequenceControl () << std::dec);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   763
  m_phy->SendPacket (packet, txMode, WIFI_PREAMBLE_LONG, 0);
2146
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   764
  /* 
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   765
   * We have to notify the NAV of transmitted packets because of the 802.11e
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   766
   * requirement from section 9.9.1.4 that each EDCAF update its NAV from the
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   767
   * transmission of any other EDCAF within the same QSTA.
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   768
   */
2159
20f882e85b4a port to Ptr<Packet> branch
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2147
diff changeset
   769
  Time txDuration = m_phy->CalculateTxDuration (packet->GetSize (), txMode, WIFI_PREAMBLE_LONG);
2146
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   770
  Simulator::Schedule (txDuration, &MacLow::NotifyNav, this, *hdr, txMode, WIFI_PREAMBLE_LONG);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   771
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   772
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   773
void
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   774
MacLow::CtsTimeout (void)
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   775
{
1993
e665fb7cea73 add time to debug output
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1990
diff changeset
   776
  MY_DEBUG ("cts timeout");
2136
46315cd94b6f add XXX for two bugs
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   777
  // XXX: should check that there was no rx start before now.
46315cd94b6f add XXX for two bugs
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   778
  // we should restart a new cts timeout now until the expected
46315cd94b6f add XXX for two bugs
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   779
  // end of rx if there was a rx start before now.
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   780
  MacStation *station = GetStation (m_currentHdr.GetAddr1 ());
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   781
  station->ReportRtsFailed ();
2159
20f882e85b4a port to Ptr<Packet> branch
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2147
diff changeset
   782
  m_currentPacket = 0;
2088
a651a0131bfe make sure that m_listener is not reset to zero _after_ calling a user-provided callback. This allows the user-provided callback to set the m_listener member to a new value if it wants to start a new transmission
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2054
diff changeset
   783
  MacLowTransmissionListener *listener = m_listener;
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   784
  m_listener = 0;
2088
a651a0131bfe make sure that m_listener is not reset to zero _after_ calling a user-provided callback. This allows the user-provided callback to set the m_listener member to a new value if it wants to start a new transmission
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2054
diff changeset
   785
  listener->MissedCts ();
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   786
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   787
void
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   788
MacLow::NormalAckTimeout (void)
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   789
{
2088
a651a0131bfe make sure that m_listener is not reset to zero _after_ calling a user-provided callback. This allows the user-provided callback to set the m_listener member to a new value if it wants to start a new transmission
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2054
diff changeset
   790
  MY_DEBUG ("normal ack timeout");
2136
46315cd94b6f add XXX for two bugs
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   791
  // XXX: should check that there was no rx start before now.
46315cd94b6f add XXX for two bugs
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   792
  // we should restart a new ack timeout now until the expected
46315cd94b6f add XXX for two bugs
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   793
  // end of rx if there was a rx start before now.
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   794
  MacStation *station = GetStation (m_currentHdr.GetAddr1 ());
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   795
  station->ReportDataFailed ();
2088
a651a0131bfe make sure that m_listener is not reset to zero _after_ calling a user-provided callback. This allows the user-provided callback to set the m_listener member to a new value if it wants to start a new transmission
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2054
diff changeset
   796
  MacLowTransmissionListener *listener = m_listener;
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   797
  m_listener = 0;
2088
a651a0131bfe make sure that m_listener is not reset to zero _after_ calling a user-provided callback. This allows the user-provided callback to set the m_listener member to a new value if it wants to start a new transmission
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2054
diff changeset
   798
  listener->MissedAck ();
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   799
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   800
void
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   801
MacLow::FastAckTimeout (void)
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   802
{
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   803
  MacStation *station = GetStation (m_currentHdr.GetAddr1 ());
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   804
  station->ReportDataFailed ();
2088
a651a0131bfe make sure that m_listener is not reset to zero _after_ calling a user-provided callback. This allows the user-provided callback to set the m_listener member to a new value if it wants to start a new transmission
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2054
diff changeset
   805
  MacLowTransmissionListener *listener = m_listener;
a651a0131bfe make sure that m_listener is not reset to zero _after_ calling a user-provided callback. This allows the user-provided callback to set the m_listener member to a new value if it wants to start a new transmission
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2054
diff changeset
   806
  m_listener = 0;
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   807
  if (m_phy->IsStateIdle ()) 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   808
    {
1993
e665fb7cea73 add time to debug output
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1990
diff changeset
   809
      MY_DEBUG ("fast Ack idle missed");
2088
a651a0131bfe make sure that m_listener is not reset to zero _after_ calling a user-provided callback. This allows the user-provided callback to set the m_listener member to a new value if it wants to start a new transmission
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2054
diff changeset
   810
      listener->MissedAck ();
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   811
    }
2088
a651a0131bfe make sure that m_listener is not reset to zero _after_ calling a user-provided callback. This allows the user-provided callback to set the m_listener member to a new value if it wants to start a new transmission
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2054
diff changeset
   812
  else
a651a0131bfe make sure that m_listener is not reset to zero _after_ calling a user-provided callback. This allows the user-provided callback to set the m_listener member to a new value if it wants to start a new transmission
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2054
diff changeset
   813
    {
a651a0131bfe make sure that m_listener is not reset to zero _after_ calling a user-provided callback. This allows the user-provided callback to set the m_listener member to a new value if it wants to start a new transmission
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2054
diff changeset
   814
      MY_DEBUG ("fast Ack ok");
a651a0131bfe make sure that m_listener is not reset to zero _after_ calling a user-provided callback. This allows the user-provided callback to set the m_listener member to a new value if it wants to start a new transmission
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2054
diff changeset
   815
    }
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   816
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   817
void
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   818
MacLow::SuperFastAckTimeout ()
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   819
{
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   820
  MacStation *station = GetStation (m_currentHdr.GetAddr1 ());
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   821
  station->ReportDataFailed ();
2088
a651a0131bfe make sure that m_listener is not reset to zero _after_ calling a user-provided callback. This allows the user-provided callback to set the m_listener member to a new value if it wants to start a new transmission
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2054
diff changeset
   822
  MacLowTransmissionListener *listener = m_listener;
a651a0131bfe make sure that m_listener is not reset to zero _after_ calling a user-provided callback. This allows the user-provided callback to set the m_listener member to a new value if it wants to start a new transmission
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2054
diff changeset
   823
  m_listener = 0;
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   824
  if (m_phy->IsStateIdle ()) 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   825
    {
1993
e665fb7cea73 add time to debug output
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1990
diff changeset
   826
      MY_DEBUG ("super fast Ack failed");
2088
a651a0131bfe make sure that m_listener is not reset to zero _after_ calling a user-provided callback. This allows the user-provided callback to set the m_listener member to a new value if it wants to start a new transmission
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2054
diff changeset
   827
      listener->MissedAck ();
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   828
    } 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   829
  else 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   830
    {
1993
e665fb7cea73 add time to debug output
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1990
diff changeset
   831
      MY_DEBUG ("super fast Ack ok");
2088
a651a0131bfe make sure that m_listener is not reset to zero _after_ calling a user-provided callback. This allows the user-provided callback to set the m_listener member to a new value if it wants to start a new transmission
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2054
diff changeset
   832
      listener->GotAck (0.0, WifiMode ());
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   833
    }
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   834
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   835
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   836
void
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   837
MacLow::SendRtsForPacket (void)
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   838
{
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   839
  /* send an RTS for this packet. */
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   840
  WifiMacHeader rts;
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   841
  rts.SetType (WIFI_MAC_CTL_RTS);
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   842
  rts.SetDsNotFrom ();
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   843
  rts.SetDsNotTo ();
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   844
  rts.SetAddr1 (m_currentHdr.GetAddr1 ());
1964
041240a915f8 build and link
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1928
diff changeset
   845
  rts.SetAddr2 (m_device->GetSelfAddress ());
2268
0e57ac711220 introduce a low latency parameter for rate control algorithms
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2177
diff changeset
   846
  WifiMode rtsTxMode = GetRtsTxMode (m_currentPacket, &m_currentHdr);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   847
  Time duration = Seconds (0);
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   848
  if (m_txParams.HasDurationId ()) 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   849
    {
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   850
      duration += m_txParams.GetDurationId ();
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   851
    } 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   852
  else 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   853
    {
2268
0e57ac711220 introduce a low latency parameter for rate control algorithms
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2177
diff changeset
   854
      WifiMode dataTxMode = GetDataTxMode (m_currentPacket, &m_currentHdr);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   855
      duration += GetSifs ();
2022
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
   856
      duration += GetCtsDuration (m_currentHdr.GetAddr1 (), rtsTxMode);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   857
      duration += GetSifs ();
2268
0e57ac711220 introduce a low latency parameter for rate control algorithms
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2177
diff changeset
   858
      duration += m_phy->CalculateTxDuration (GetSize (m_currentPacket, &m_currentHdr), 
0e57ac711220 introduce a low latency parameter for rate control algorithms
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2177
diff changeset
   859
                                              dataTxMode, WIFI_PREAMBLE_LONG);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   860
      duration += GetSifs ();
2022
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
   861
      duration += GetAckDuration (m_currentHdr.GetAddr1 (), dataTxMode);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   862
    }
2022
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
   863
  rts.SetDuration (duration);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   864
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   865
  Time txDuration = m_phy->CalculateTxDuration (GetRtsSize (), rtsTxMode, WIFI_PREAMBLE_LONG);
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   866
  Time timerDelay = txDuration + GetCtsTimeout ();
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   867
1974
0d6b3bead74a replace cassert by ns3/assert.h
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1964
diff changeset
   868
  NS_ASSERT (m_ctsTimeoutEvent.IsExpired ());
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   869
  m_ctsTimeoutEvent = Simulator::Schedule (timerDelay, &MacLow::CtsTimeout, this);
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   870
2159
20f882e85b4a port to Ptr<Packet> branch
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2147
diff changeset
   871
  Ptr<Packet> packet = Create<Packet> ();
20f882e85b4a port to Ptr<Packet> branch
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2147
diff changeset
   872
  packet->AddHeader (rts);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   873
  WifiMacTrailer fcs;
2159
20f882e85b4a port to Ptr<Packet> branch
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2147
diff changeset
   874
  packet->AddTrailer (fcs);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   875
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   876
  ForwardDown (packet, &rts, rtsTxMode);
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   877
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   878
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   879
void
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   880
MacLow::StartDataTxTimers (void)
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   881
{
2268
0e57ac711220 introduce a low latency parameter for rate control algorithms
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2177
diff changeset
   882
  WifiMode dataTxMode = GetDataTxMode (m_currentPacket, &m_currentHdr);
0e57ac711220 introduce a low latency parameter for rate control algorithms
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2177
diff changeset
   883
  Time txDuration = m_phy->CalculateTxDuration (GetSize (m_currentPacket, &m_currentHdr), dataTxMode, WIFI_PREAMBLE_LONG);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   884
  if (m_txParams.MustWaitNormalAck ()) 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   885
    {
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   886
      Time timerDelay = txDuration + GetAckTimeout ();
1974
0d6b3bead74a replace cassert by ns3/assert.h
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1964
diff changeset
   887
      NS_ASSERT (m_normalAckTimeoutEvent.IsExpired ());
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   888
      m_normalAckTimeoutEvent = Simulator::Schedule (timerDelay, &MacLow::NormalAckTimeout, this);
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   889
    } 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   890
  else if (m_txParams.MustWaitFastAck ()) 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   891
    {
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   892
      Time timerDelay = txDuration + GetPifs ();
1974
0d6b3bead74a replace cassert by ns3/assert.h
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1964
diff changeset
   893
      NS_ASSERT (m_fastAckTimeoutEvent.IsExpired ());
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   894
      m_fastAckTimeoutEvent = Simulator::Schedule (timerDelay, &MacLow::FastAckTimeout, this);
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   895
    } 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   896
  else if (m_txParams.MustWaitSuperFastAck ()) 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   897
    {
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   898
      Time timerDelay = txDuration + GetPifs ();
1974
0d6b3bead74a replace cassert by ns3/assert.h
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1964
diff changeset
   899
      NS_ASSERT (m_superFastAckTimeoutEvent.IsExpired ());
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   900
      m_superFastAckTimeoutEvent = Simulator::Schedule (timerDelay, 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   901
                                                        &MacLow::SuperFastAckTimeout, this);
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   902
    } 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   903
  else if (m_txParams.HasNextPacket ()) 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   904
    {
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   905
      Time delay = txDuration + GetSifs ();
1974
0d6b3bead74a replace cassert by ns3/assert.h
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1964
diff changeset
   906
      NS_ASSERT (m_waitSifsEvent.IsExpired ());
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   907
      m_waitSifsEvent = Simulator::Schedule (delay, &MacLow::WaitSifsAfterEndTx, this);
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   908
    } 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   909
  else 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   910
    {
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   911
      // since we do not expect any timer to be triggered.
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   912
      m_listener = 0;
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   913
    }
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   914
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   915
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   916
void
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   917
MacLow::SendDataPacket (void)
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   918
{
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   919
  /* send this packet directly. No RTS is needed. */
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   920
  StartDataTxTimers ();
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   921
2268
0e57ac711220 introduce a low latency parameter for rate control algorithms
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2177
diff changeset
   922
  WifiMode dataTxMode = GetDataTxMode (m_currentPacket, &m_currentHdr);
2163
03fe5e8740dc fix a small style issue
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2159
diff changeset
   923
  Time duration = Seconds (0.0);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   924
  if (m_txParams.HasDurationId ()) 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   925
    {
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   926
      duration += m_txParams.GetDurationId ();
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   927
    } 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   928
  else 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   929
    {
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   930
      if (m_txParams.MustWaitAck ()) 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   931
        {
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   932
          duration += GetSifs ();
2022
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
   933
          duration += GetAckDuration (m_currentHdr.GetAddr1 (), dataTxMode);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   934
        }
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   935
      if (m_txParams.HasNextPacket ()) 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   936
        {
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   937
          duration += GetSifs ();
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   938
          duration += m_phy->CalculateTxDuration (m_txParams.GetNextPacketSize (), 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   939
                                                  dataTxMode, WIFI_PREAMBLE_LONG);
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   940
          if (m_txParams.MustWaitAck ()) 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   941
            {
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   942
              duration += GetSifs ();
2022
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
   943
              duration += GetAckDuration (m_currentHdr.GetAddr1 (), dataTxMode);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   944
            }
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   945
        }
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   946
    }
2022
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
   947
  m_currentHdr.SetDuration (duration);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   948
2159
20f882e85b4a port to Ptr<Packet> branch
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2147
diff changeset
   949
  m_currentPacket->AddHeader (m_currentHdr);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   950
  WifiMacTrailer fcs;
2159
20f882e85b4a port to Ptr<Packet> branch
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2147
diff changeset
   951
  m_currentPacket->AddTrailer (fcs);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   952
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   953
  ForwardDown (m_currentPacket, &m_currentHdr, dataTxMode);
2159
20f882e85b4a port to Ptr<Packet> branch
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2147
diff changeset
   954
  m_currentPacket = 0;
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   955
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   956
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   957
bool 
2146
40ad60ac9912 replace Dcf with DcfManager
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2088
diff changeset
   958
MacLow::IsNavZero (void) const
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   959
{
2177
d2d60d000963 the check was not really inverted after all. Damned.
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2176
diff changeset
   960
  if (m_lastNavStart + m_lastNavDuration < Simulator::Now ()) 
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   961
    {
2172
eb1adef495b6 the bool check was inverted. reported by Federico Maguolo.
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2163
diff changeset
   962
      return true;
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   963
    } 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   964
  else 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   965
    {
2172
eb1adef495b6 the bool check was inverted. reported by Federico Maguolo.
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2163
diff changeset
   966
      return false;
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   967
    }
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   968
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   969
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   970
MacStation *
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   971
MacLow::GetStation (Mac48Address ad) const
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   972
{
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   973
  return m_stations->Lookup (ad);
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   974
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   975
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   976
void
2022
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
   977
MacLow::SendCtsAfterRts (Mac48Address source, Time duration, WifiMode rtsTxMode, double rtsSnr)
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   978
{
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   979
  /* send a CTS when you receive a RTS 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   980
   * right after SIFS.
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   981
   */
2022
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
   982
  WifiMode ctsTxMode = GetCtsTxModeForRts (source, rtsTxMode);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   983
  WifiMacHeader cts;
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   984
  cts.SetType (WIFI_MAC_CTL_CTS);
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   985
  cts.SetDsNotFrom ();
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   986
  cts.SetDsNotTo ();
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   987
  cts.SetAddr1 (source);
2022
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
   988
  duration -= GetCtsDuration (source, rtsTxMode);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   989
  duration -= GetSifs ();
2022
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
   990
  NS_ASSERT (duration >= MicroSeconds (0));
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
   991
  cts.SetDuration (duration);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   992
2159
20f882e85b4a port to Ptr<Packet> branch
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2147
diff changeset
   993
  Ptr<Packet> packet = Create<Packet> ();
20f882e85b4a port to Ptr<Packet> branch
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2147
diff changeset
   994
  packet->AddHeader (cts);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   995
  WifiMacTrailer fcs;
2159
20f882e85b4a port to Ptr<Packet> branch
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2147
diff changeset
   996
  packet->AddTrailer (fcs);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   997
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   998
  struct SnrTag tag;
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
   999
  tag.Set (rtsSnr);
2159
20f882e85b4a port to Ptr<Packet> branch
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2147
diff changeset
  1000
  packet->AddTag (tag);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1001
2022
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
  1002
  ForwardDown (packet, &cts, ctsTxMode);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1003
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1004
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1005
void
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1006
MacLow::SendDataAfterCts (Mac48Address source, Time duration, WifiMode txMode)
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1007
{
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1008
  /* send the third step in a 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1009
   * RTS/CTS/DATA/ACK hanshake 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1010
   */
2159
20f882e85b4a port to Ptr<Packet> branch
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2147
diff changeset
  1011
  NS_ASSERT (m_currentPacket != 0);
2176
8a8305b75bed make sure we never set a negative duration
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2172
diff changeset
  1012
  StartDataTxTimers ();
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1013
2268
0e57ac711220 introduce a low latency parameter for rate control algorithms
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2177
diff changeset
  1014
  WifiMode dataTxMode = GetDataTxMode (m_currentPacket, &m_currentHdr);
2176
8a8305b75bed make sure we never set a negative duration
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2172
diff changeset
  1015
  Time newDuration = Seconds (0);
8a8305b75bed make sure we never set a negative duration
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2172
diff changeset
  1016
  newDuration += GetSifs ();
8a8305b75bed make sure we never set a negative duration
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2172
diff changeset
  1017
  newDuration += GetAckDuration (m_currentHdr.GetAddr1 (), dataTxMode);
2268
0e57ac711220 introduce a low latency parameter for rate control algorithms
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2177
diff changeset
  1018
  Time txDuration = m_phy->CalculateTxDuration (GetSize (m_currentPacket, &m_currentHdr), 
0e57ac711220 introduce a low latency parameter for rate control algorithms
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2177
diff changeset
  1019
                                                dataTxMode, WIFI_PREAMBLE_LONG);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1020
  duration -= txDuration;
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1021
  duration -= GetSifs ();
2176
8a8305b75bed make sure we never set a negative duration
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2172
diff changeset
  1022
8a8305b75bed make sure we never set a negative duration
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2172
diff changeset
  1023
  duration = std::max (duration, newDuration);
2022
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
  1024
  NS_ASSERT (duration >= MicroSeconds (0));
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
  1025
  m_currentHdr.SetDuration (duration);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1026
2159
20f882e85b4a port to Ptr<Packet> branch
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2147
diff changeset
  1027
  m_currentPacket->AddHeader (m_currentHdr);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1028
  WifiMacTrailer fcs;
2159
20f882e85b4a port to Ptr<Packet> branch
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2147
diff changeset
  1029
  m_currentPacket->AddTrailer (fcs);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1030
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1031
  ForwardDown (m_currentPacket, &m_currentHdr, dataTxMode);
2159
20f882e85b4a port to Ptr<Packet> branch
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2147
diff changeset
  1032
  m_currentPacket = 0;
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1033
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1034
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1035
void 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1036
MacLow::WaitSifsAfterEndTx (void)
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1037
{
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1038
  m_listener->StartNext ();
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1039
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1040
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1041
void
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1042
MacLow::FastAckFailedTimeout (void)
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1043
{
2088
a651a0131bfe make sure that m_listener is not reset to zero _after_ calling a user-provided callback. This allows the user-provided callback to set the m_listener member to a new value if it wants to start a new transmission
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2054
diff changeset
  1044
  MacLowTransmissionListener *listener = m_listener;
a651a0131bfe make sure that m_listener is not reset to zero _after_ calling a user-provided callback. This allows the user-provided callback to set the m_listener member to a new value if it wants to start a new transmission
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2054
diff changeset
  1045
  m_listener = 0;
a651a0131bfe make sure that m_listener is not reset to zero _after_ calling a user-provided callback. This allows the user-provided callback to set the m_listener member to a new value if it wants to start a new transmission
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2054
diff changeset
  1046
  listener->MissedAck ();
1993
e665fb7cea73 add time to debug output
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1990
diff changeset
  1047
  MY_DEBUG ("fast Ack busy but missed");
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1048
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1049
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1050
void
2022
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
  1051
MacLow::SendAckAfterData (Mac48Address source, Time duration, WifiMode dataTxMode, double dataSnr)
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1052
{
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1053
  /* send an ACK when you receive 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1054
   * a packet after SIFS. 
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1055
   */
2022
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
  1056
  WifiMode ackTxMode = GetAckTxModeForData (source, dataTxMode);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1057
  WifiMacHeader ack;
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1058
  ack.SetType (WIFI_MAC_CTL_ACK);
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1059
  ack.SetDsNotFrom ();
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1060
  ack.SetDsNotTo ();
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1061
  ack.SetAddr1 (source);
2022
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
  1062
  duration -= GetAckDuration (source, dataTxMode);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1063
  duration -= GetSifs ();
2022
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
  1064
  NS_ASSERT (duration >= MicroSeconds (0));
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
  1065
  ack.SetDuration (duration);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1066
2159
20f882e85b4a port to Ptr<Packet> branch
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2147
diff changeset
  1067
  Ptr<Packet> packet = Create<Packet> ();
20f882e85b4a port to Ptr<Packet> branch
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2147
diff changeset
  1068
  packet->AddHeader (ack);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1069
  WifiMacTrailer fcs;
2159
20f882e85b4a port to Ptr<Packet> branch
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2147
diff changeset
  1070
  packet->AddTrailer (fcs);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1071
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1072
  struct SnrTag tag;
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1073
  tag.Set (dataSnr);
2159
20f882e85b4a port to Ptr<Packet> branch
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 2147
diff changeset
  1074
  packet->AddTag (tag);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1075
2022
33579d27ce2a try to simplify duration calculations
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents: 1996
diff changeset
  1076
  ForwardDown (packet, &ack, ackTxMode);
1922
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1077
}
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1078
dd18bc29fc3c add MacLow to build
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff changeset
  1079
} // namespace ns3