author | Mathieu Lacage <mathieu.lacage@sophia.inria.fr> |
Thu, 18 Oct 2007 15:59:33 +0200 | |
changeset 2009 | afed751cc0b5 |
parent 2004 | 59eb6fb7b722 |
child 2010 | e2e16c1712c8 |
permissions | -rw-r--r-- |
1956 | 1 |
/* -*- 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/packet.h" |
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#include "ns3/llc-snap-header.h" |
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#include "ns3/node.h" |
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#include "wifi-net-device.h" |
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#include "wifi-phy.h" |
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#include "wifi-channel.h" |
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#include "mac-stations.h" |
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#include "mac-low.h" |
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#include "mac-parameters.h" |
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#include "mac-rx-middle.h" |
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#include "mac-tx-middle.h" |
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#include "mac-high-adhoc.h" |
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#include "mac-high-nqsta.h" |
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#include "mac-high-nqap.h" |
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#include "dca-txop.h" |
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#include "wifi-default-parameters.h" |
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#include "arf-mac-stations.h" |
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#include "aarf-mac-stations.h" |
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#include "ideal-mac-stations.h" |
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#include "cr-mac-stations.h" |
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namespace ns3 { |
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||
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static WifiMode |
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GetWifiModeForPhyMode (WifiPhy *phy, enum WifiDefaultParameters::PhyModeParameter mode) |
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{ |
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uint32_t phyRate = (uint32_t)mode; |
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for (uint32_t i= 0; i < phy->GetNModes (); i++) |
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{ |
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WifiMode mode = phy->GetMode (i); |
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if (mode.GetPhyRate () == phyRate) |
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{ |
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return mode; |
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} |
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} |
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NS_ASSERT (false); |
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return WifiMode (); |
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} |
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WifiNetDevice::WifiNetDevice (Ptr<Node> node) |
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: NetDevice (node, Mac48Address::Allocate ()) |
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{ |
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SetMtu (2300); |
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EnableBroadcast (Mac48Address ("ff:ff:ff:ff:ff:ff")); |
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Construct (); |
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} |
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WifiNetDevice::~WifiNetDevice () |
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{} |
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void |
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WifiNetDevice::Construct (void) |
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{ |
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// the physical layer. |
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m_phy = new WifiPhy (this); |
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|
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// the rate control algorithm |
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switch (WifiDefaultParameters::GetRateControlAlgorithm ()) { |
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case WifiDefaultParameters::ARF: |
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m_stations = new ArfMacStations (m_phy->GetMode (0), |
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WifiDefaultParameters::GetArfRateControlTimerThreshold (), |
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WifiDefaultParameters::GetArfRateControlSuccessThreshold ()); |
1964
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break; |
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case WifiDefaultParameters::AARF: |
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m_stations = new AarfMacStations (m_phy->GetMode (0), |
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WifiDefaultParameters::GetAarfRateControlMinTimerThreshold (), |
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WifiDefaultParameters::GetAarfRateControlMinSuccessThreshold (), |
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WifiDefaultParameters::GetAarfRateControlSuccessK (), |
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control the rate control algorithms with default values.
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WifiDefaultParameters::GetAarfRateControlMaxSuccessThreshold (), |
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WifiDefaultParameters::GetAarfRateControlTimerK ()); |
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break; |
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case WifiDefaultParameters::CONSTANT_RATE: { |
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WifiMode dataRate = GetWifiModeForPhyMode (m_phy, WifiDefaultParameters::GetConstantDataRate ()); |
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WifiMode ctlRate = GetWifiModeForPhyMode (m_phy, WifiDefaultParameters::GetConstantCtlRate ()); |
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m_stations = new CrMacStations (dataRate, ctlRate); |
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} break; |
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case WifiDefaultParameters::IDEAL: { |
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double ber = WifiDefaultParameters::GetIdealRateControlBer (); |
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IdealMacStations *ideal = new IdealMacStations (m_phy->GetMode (0)); |
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uint32_t nModes = m_phy->GetNModes (); |
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for (uint32_t i = 0; i < nModes; i++) |
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{ |
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WifiMode mode = m_phy->GetMode (i); |
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ideal->AddModeSnrThreshold (mode, m_phy->CalculateSnr (mode, ber)); |
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} |
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m_stations = ideal; |
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} break; |
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default: |
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// NOTREACHED |
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NS_ASSERT (false); |
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break; |
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} |
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|
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// MacParameters |
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MacParameters *parameters = new MacParameters (); |
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WifiMacHeader hdr; |
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hdr.SetType (WIFI_MAC_CTL_CTS); |
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Time ctsDelay = m_phy->CalculateTxDuration (hdr.GetSize () + 4, m_phy->GetMode (0), WIFI_PREAMBLE_LONG); |
1964
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hdr.SetType (WIFI_MAC_CTL_ACK); |
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Time ackDelay = m_phy->CalculateTxDuration (hdr.GetSize () + 4, m_phy->GetMode (0), WIFI_PREAMBLE_LONG); |
1964
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parameters->Initialize (ctsDelay, ackDelay); |
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m_parameters = parameters; |
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|
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// the MacLow |
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MacLow *low = new MacLow (); |
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low->SetDevice (this); |
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low->SetPhy (m_phy); |
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low->SetStations (m_stations); |
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low->SetParameters (m_parameters); |
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m_phy->SetReceiveOkCallback (MakeCallback (&MacLow::ReceiveOk, low)); |
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m_phy->SetReceiveErrorCallback (MakeCallback (&MacLow::ReceiveError, low)); |
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m_low = low; |
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|
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// the 'middle' rx |
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136 |
MacRxMiddle *rxMiddle = new MacRxMiddle (); |
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137 |
low->SetRxCallback (MakeCallback (&MacRxMiddle::Receive, rxMiddle)); |
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m_rxMiddle = rxMiddle; |
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|
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140 |
// the 'middle' tx |
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141 |
MacTxMiddle *txMiddle = new MacTxMiddle (); |
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142 |
m_txMiddle = txMiddle; |
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|
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} |
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|
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146 |
DcaTxop * |
1969
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147 |
WifiNetDevice::CreateDca (uint32_t minCw, uint32_t maxCw) const |
1964
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148 |
{ |
1969
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1964
diff
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|
149 |
DcaTxop *dca = new DcaTxop (minCw, maxCw); |
1964
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1956
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|
150 |
dca->SetParameters (m_parameters); |
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1956
diff
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|
151 |
dca->SetTxMiddle (m_txMiddle); |
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1956
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|
152 |
dca->SetLow (m_low); |
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|
153 |
dca->SetPhy (m_phy); |
1969
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fix valgrind warning
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1964
diff
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|
154 |
|
1964
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1956
diff
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|
155 |
Time difs = m_parameters->GetSifs () + |
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1956
diff
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|
156 |
m_parameters->GetSlotTime () + |
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1956
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|
157 |
m_parameters->GetSlotTime (); |
1994
72e228d070f4
make sure that ack and cts delay take into account the fcs padding.
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1969
diff
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|
158 |
// see 802.11 p85 section 9.2.10 |
1964
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1956
diff
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|
159 |
Time eifs = difs + m_parameters->GetSifs () + |
1995
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1994
diff
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|
160 |
m_phy->CalculateTxDuration (8 * (2+2+6+4), m_phy->GetMode (0), WIFI_PREAMBLE_LONG); |
1964
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|
161 |
dca->SetDifs (difs); |
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1956
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|
162 |
dca->SetEifs (eifs); |
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1956
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|
163 |
dca->SetMaxQueueSize (400); |
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1956
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|
164 |
dca->SetMaxQueueDelay (Seconds (10)); |
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|
165 |
return dca; |
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|
166 |
} |
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|
167 |
|
1956 | 168 |
void |
169 |
WifiNetDevice::ConnectTo (Ptr<WifiChannel> channel) |
|
170 |
{ |
|
1964
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|
171 |
m_channel = channel; |
1956 | 172 |
m_phy->SetChannel (channel); |
173 |
NotifyConnected (); |
|
174 |
} |
|
175 |
bool |
|
176 |
WifiNetDevice::SendTo (const Packet &packet, const Address &to, uint16_t protocolNumber) |
|
177 |
{ |
|
178 |
NS_ASSERT (Mac48Address::IsMatchingType (to)); |
|
179 |
||
180 |
Mac48Address realTo = Mac48Address::ConvertFrom (to); |
|
181 |
||
182 |
Packet p = packet; |
|
183 |
||
184 |
LlcSnapHeader llc; |
|
185 |
llc.SetType (protocolNumber); |
|
186 |
p.AddHeader (llc); |
|
187 |
||
188 |
m_txLogger (p, realTo); |
|
189 |
||
190 |
return DoSendTo (p, realTo); |
|
191 |
} |
|
192 |
void |
|
193 |
WifiNetDevice::DoForwardUp (Packet packet, const Mac48Address &from) |
|
194 |
{ |
|
195 |
m_rxLogger (packet, from); |
|
196 |
||
197 |
LlcSnapHeader llc; |
|
198 |
packet.RemoveHeader (llc); |
|
199 |
NetDevice::ForwardUp (packet, llc.GetType (), from); |
|
200 |
} |
|
201 |
Mac48Address |
|
202 |
WifiNetDevice::GetSelfAddress (void) const |
|
203 |
{ |
|
204 |
NS_ASSERT (Mac48Address::IsMatchingType (GetAddress ())); |
|
205 |
Mac48Address self = Mac48Address::ConvertFrom (GetAddress ()); |
|
206 |
return self; |
|
207 |
} |
|
1964
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|
208 |
bool |
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|
209 |
WifiNetDevice::DoNeedsArp (void) const |
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|
210 |
{ |
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|
211 |
return true; |
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|
212 |
} |
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|
213 |
Ptr<Channel> |
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|
214 |
WifiNetDevice::DoGetChannel (void) const |
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|
215 |
{ |
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|
216 |
return m_channel; |
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|
217 |
} |
1998
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|
218 |
void |
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|
219 |
WifiNetDevice::DoDispose (void) |
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|
220 |
{ |
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diff
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|
221 |
// chain up. |
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|
222 |
NetDevice::DoDispose (); |
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|
223 |
// cleanup local |
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|
224 |
m_channel = 0; |
1999
9c279e6ebb20
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1998
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|
225 |
delete m_phy; |
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1998
diff
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|
226 |
delete m_stations; |
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1998
diff
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|
227 |
delete m_low; |
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1998
diff
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|
228 |
delete m_rxMiddle; |
9c279e6ebb20
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1998
diff
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|
229 |
delete m_txMiddle; |
9c279e6ebb20
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1998
diff
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|
230 |
delete m_parameters; |
9c279e6ebb20
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1998
diff
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|
231 |
m_phy = 0; |
9c279e6ebb20
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1998
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|
232 |
m_stations = 0; |
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1998
diff
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|
233 |
m_low = 0; |
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1998
diff
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|
234 |
m_rxMiddle = 0; |
9c279e6ebb20
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|
235 |
m_txMiddle = 0; |
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|
236 |
m_parameters = 0; |
1998
41cd4e5694c2
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1995
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|
237 |
} |
1964
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parents:
1956
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|
238 |
|
1956 | 239 |
|
240 |
/***************************************************** |
|
241 |
* Adhoc code |
|
242 |
*****************************************************/ |
|
243 |
||
244 |
AdhocWifiNetDevice::AdhocWifiNetDevice (Ptr<Node> node) |
|
245 |
: WifiNetDevice (node) |
|
1964
041240a915f8
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1956
diff
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|
246 |
{ |
041240a915f8
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1956
diff
changeset
|
247 |
m_ssid = WifiDefaultParameters::GetSsid (); |
1969
a3803bfd94f9
fix valgrind warning
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parents:
1964
diff
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|
248 |
m_dca = CreateDca (15, 1023); |
1964
041240a915f8
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1956
diff
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|
249 |
|
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1956
diff
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|
250 |
MacHighAdhoc *high = new MacHighAdhoc (); |
041240a915f8
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1956
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|
251 |
high->SetDevice (this); |
041240a915f8
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1956
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|
252 |
high->SetDcaTxop (m_dca); |
041240a915f8
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1956
diff
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|
253 |
high->SetForwardCallback (MakeCallback (&AdhocWifiNetDevice::DoForwardUp, |
041240a915f8
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1956
diff
changeset
|
254 |
static_cast<WifiNetDevice *> (this))); |
2003
335dc094e52a
support BRAND_NEW station in adhoc code. initialize the supported rates.
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parents:
2002
diff
changeset
|
255 |
high->SetPhy (m_phy); |
335dc094e52a
support BRAND_NEW station in adhoc code. initialize the supported rates.
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2002
diff
changeset
|
256 |
high->SetStations (m_stations); |
1964
041240a915f8
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parents:
1956
diff
changeset
|
257 |
m_rxMiddle->SetForwardCallback (MakeCallback (&MacHighAdhoc::Receive, high)); |
041240a915f8
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1956
diff
changeset
|
258 |
m_high = high; |
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1956
diff
changeset
|
259 |
} |
1956 | 260 |
AdhocWifiNetDevice::~AdhocWifiNetDevice () |
2002
32903f9a7315
add dispose methods in subclasses of WifiNetDevice
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1999
diff
changeset
|
261 |
{} |
1956 | 262 |
Mac48Address |
263 |
AdhocWifiNetDevice::GetBssid (void) const |
|
264 |
{ |
|
265 |
return m_high->GetBssid (); |
|
266 |
} |
|
267 |
Ssid |
|
268 |
AdhocWifiNetDevice::GetSsid (void) const |
|
269 |
{ |
|
270 |
return m_ssid; |
|
271 |
} |
|
272 |
void |
|
273 |
AdhocWifiNetDevice::SetSsid (Ssid ssid) |
|
274 |
{ |
|
275 |
// XXX restart adhoc network join. |
|
276 |
m_ssid = ssid; |
|
277 |
} |
|
278 |
bool |
|
279 |
AdhocWifiNetDevice::DoSendTo (const Packet &packet, Mac48Address const &to) |
|
280 |
{ |
|
281 |
m_high->Enqueue (packet, to); |
|
282 |
return true; |
|
283 |
} |
|
284 |
void |
|
285 |
AdhocWifiNetDevice::NotifyConnected (void) |
|
286 |
{ |
|
287 |
NotifyLinkUp (); |
|
288 |
} |
|
2002
32903f9a7315
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1999
diff
changeset
|
289 |
void |
32903f9a7315
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1999
diff
changeset
|
290 |
AdhocWifiNetDevice::DoDispose (void) |
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1999
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|
291 |
{ |
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1999
diff
changeset
|
292 |
// chain up. |
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1999
diff
changeset
|
293 |
WifiNetDevice::DoDispose (); |
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1999
diff
changeset
|
294 |
// local cleanup |
32903f9a7315
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1999
diff
changeset
|
295 |
delete m_dca; |
32903f9a7315
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1999
diff
changeset
|
296 |
delete m_high; |
32903f9a7315
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1999
diff
changeset
|
297 |
m_dca = 0; |
32903f9a7315
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1999
diff
changeset
|
298 |
m_high = 0; |
32903f9a7315
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1999
diff
changeset
|
299 |
} |
32903f9a7315
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parents:
1999
diff
changeset
|
300 |
|
1956 | 301 |
|
302 |
/***************************************************** |
|
303 |
* STA code |
|
304 |
*****************************************************/ |
|
305 |
||
306 |
NqstaWifiNetDevice::NqstaWifiNetDevice (Ptr<Node> node) |
|
307 |
: WifiNetDevice (node) |
|
1964
041240a915f8
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parents:
1956
diff
changeset
|
308 |
{ |
041240a915f8
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parents:
1956
diff
changeset
|
309 |
m_ssid = WifiDefaultParameters::GetSsid (); |
1969
a3803bfd94f9
fix valgrind warning
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
1964
diff
changeset
|
310 |
m_dca = CreateDca (15, 1023); |
1964
041240a915f8
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parents:
1956
diff
changeset
|
311 |
|
041240a915f8
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1956
diff
changeset
|
312 |
MacHighNqsta *high = new MacHighNqsta (); |
041240a915f8
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1956
diff
changeset
|
313 |
high->SetDevice (this); |
041240a915f8
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parents:
1956
diff
changeset
|
314 |
high->SetDcaTxop (m_dca); |
041240a915f8
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Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
1956
diff
changeset
|
315 |
high->SetForwardCallback (MakeCallback (&NqstaWifiNetDevice::DoForwardUp, |
041240a915f8
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parents:
1956
diff
changeset
|
316 |
this)); |
041240a915f8
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parents:
1956
diff
changeset
|
317 |
high->SetAssociatedCallback (MakeCallback (&NqstaWifiNetDevice::Associated, |
041240a915f8
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parents:
1956
diff
changeset
|
318 |
this)); |
041240a915f8
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parents:
1956
diff
changeset
|
319 |
high->SetDisAssociatedCallback (MakeCallback (&NqstaWifiNetDevice::DisAssociated, |
041240a915f8
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Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
1956
diff
changeset
|
320 |
this)); |
2009
afed751cc0b5
dynamically update the list of supported rates based on the ap supported rates
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
2004
diff
changeset
|
321 |
high->SetStations (m_stations); |
afed751cc0b5
dynamically update the list of supported rates based on the ap supported rates
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
2004
diff
changeset
|
322 |
high->SetPhy (m_phy); |
1964
041240a915f8
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parents:
1956
diff
changeset
|
323 |
m_rxMiddle->SetForwardCallback (MakeCallback (&MacHighNqsta::Receive, high)); |
041240a915f8
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parents:
1956
diff
changeset
|
324 |
m_high = high; |
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325 |
} |
1956 | 326 |
NqstaWifiNetDevice::~NqstaWifiNetDevice () |
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327 |
{} |
1956 | 328 |
Mac48Address |
329 |
NqstaWifiNetDevice::GetBssid (void) const |
|
330 |
{ |
|
331 |
return m_high->GetBssid (); |
|
332 |
} |
|
333 |
Ssid |
|
334 |
NqstaWifiNetDevice::GetSsid (void) const |
|
335 |
{ |
|
336 |
return m_ssid; |
|
337 |
} |
|
338 |
void |
|
339 |
NqstaWifiNetDevice::StartActiveAssociation (Ssid ssid) |
|
340 |
{ |
|
341 |
m_ssid = ssid; |
|
342 |
m_high->StartActiveAssociation (); |
|
343 |
} |
|
344 |
bool |
|
345 |
NqstaWifiNetDevice::DoSendTo (const Packet &packet, Mac48Address const &to) |
|
346 |
{ |
|
347 |
m_high->Queue (packet, to); |
|
348 |
return true; |
|
349 |
} |
|
350 |
void |
|
351 |
NqstaWifiNetDevice::NotifyConnected (void) |
|
352 |
{ |
|
353 |
// do nothing because link status is kept track of in |
|
354 |
// ::Associated and ::Disassociated |
|
355 |
} |
|
356 |
void |
|
357 |
NqstaWifiNetDevice::Associated (void) |
|
358 |
{ |
|
359 |
NetDevice::NotifyLinkUp (); |
|
360 |
} |
|
361 |
||
362 |
void |
|
363 |
NqstaWifiNetDevice::DisAssociated (void) |
|
364 |
{ |
|
365 |
NetDevice::NotifyLinkDown (); |
|
366 |
} |
|
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367 |
void |
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368 |
NqstaWifiNetDevice::DoDispose (void) |
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369 |
{ |
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|
370 |
// chain up. |
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|
371 |
WifiNetDevice::DoDispose (); |
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|
372 |
// local cleanup |
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|
373 |
delete m_dca; |
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|
374 |
delete m_high; |
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375 |
m_dca = 0; |
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|
376 |
m_high = 0; |
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|
377 |
} |
1956 | 378 |
|
379 |
||
380 |
/***************************************************** |
|
381 |
* AP code |
|
382 |
*****************************************************/ |
|
383 |
||
384 |
||
385 |
NqapWifiNetDevice::NqapWifiNetDevice (Ptr<Node> node) |
|
386 |
: WifiNetDevice (node) |
|
1964
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|
387 |
{ |
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|
388 |
m_ssid = WifiDefaultParameters::GetSsid (); |
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|
389 |
|
1969
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1964
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|
390 |
m_dca = CreateDca (15, 1023); |
1964
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|
391 |
|
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|
392 |
SupportedRates rates; |
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|
393 |
for (uint32_t i = 0; i < m_phy->GetNModes (); i++) |
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|
394 |
{ |
2003
335dc094e52a
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|
395 |
WifiMode mode = m_phy->GetMode (i); |
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2002
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|
396 |
rates.AddSupportedRate (mode.GetPhyRate ()); |
1964
041240a915f8
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1956
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|
397 |
} |
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parents:
1956
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changeset
|
398 |
|
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parents:
1956
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changeset
|
399 |
MacHighNqap *high = new MacHighNqap (); |
041240a915f8
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parents:
1956
diff
changeset
|
400 |
high->SetDevice (this); |
041240a915f8
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1956
diff
changeset
|
401 |
high->SetDcaTxop (m_dca); |
041240a915f8
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parents:
1956
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changeset
|
402 |
high->SetStations (m_stations); |
041240a915f8
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parents:
1956
diff
changeset
|
403 |
high->SetForwardCallback (MakeCallback (&NqapWifiNetDevice::DoForwardUp, |
041240a915f8
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parents:
1956
diff
changeset
|
404 |
this)); |
041240a915f8
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parents:
1956
diff
changeset
|
405 |
high->SetSupportedRates (rates); |
041240a915f8
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parents:
1956
diff
changeset
|
406 |
m_rxMiddle->SetForwardCallback (MakeCallback (&MacHighNqap::Receive, high)); |
041240a915f8
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parents:
1956
diff
changeset
|
407 |
m_high = high; |
041240a915f8
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parents:
1956
diff
changeset
|
408 |
} |
1956 | 409 |
NqapWifiNetDevice::~NqapWifiNetDevice () |
2002
32903f9a7315
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parents:
1999
diff
changeset
|
410 |
{} |
1956 | 411 |
Mac48Address |
412 |
NqapWifiNetDevice::GetBssid (void) const |
|
413 |
{ |
|
414 |
return GetSelfAddress (); |
|
415 |
} |
|
416 |
Ssid |
|
417 |
NqapWifiNetDevice::GetSsid (void) const |
|
418 |
{ |
|
419 |
return m_ssid; |
|
420 |
} |
|
421 |
void |
|
422 |
NqapWifiNetDevice::SetSsid (Ssid ssid) |
|
423 |
{ |
|
424 |
m_ssid = ssid; |
|
425 |
} |
|
426 |
bool |
|
427 |
NqapWifiNetDevice::DoSendTo (const Packet &packet, Mac48Address const & to) |
|
428 |
{ |
|
429 |
m_high->Queue (packet, to); |
|
430 |
return true; |
|
431 |
} |
|
432 |
void |
|
433 |
NqapWifiNetDevice::NotifyConnected (void) |
|
434 |
{ |
|
435 |
NotifyLinkUp (); |
|
436 |
} |
|
2002
32903f9a7315
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parents:
1999
diff
changeset
|
437 |
void |
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parents:
1999
diff
changeset
|
438 |
NqapWifiNetDevice::DoDispose (void) |
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parents:
1999
diff
changeset
|
439 |
{ |
32903f9a7315
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parents:
1999
diff
changeset
|
440 |
// chain up. |
32903f9a7315
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parents:
1999
diff
changeset
|
441 |
WifiNetDevice::DoDispose (); |
32903f9a7315
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parents:
1999
diff
changeset
|
442 |
// local cleanup |
32903f9a7315
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Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
1999
diff
changeset
|
443 |
delete m_dca; |
32903f9a7315
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Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
1999
diff
changeset
|
444 |
delete m_high; |
32903f9a7315
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Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
1999
diff
changeset
|
445 |
m_dca = 0; |
32903f9a7315
add dispose methods in subclasses of WifiNetDevice
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
1999
diff
changeset
|
446 |
m_high = 0; |
32903f9a7315
add dispose methods in subclasses of WifiNetDevice
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
1999
diff
changeset
|
447 |
} |
1956 | 448 |
|
449 |
||
450 |
} // namespace ns3 |
|
451 |