author | Tom Henderson <tomh@tomh.org> |
Sun, 25 Mar 2007 07:13:03 -0700 | |
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child 370 | a6f39edb0754 |
permissions | -rw-r--r-- |
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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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* All rights reserved. |
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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 <iostream> |
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#include <cassert> |
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#include "ns3/debug.h" |
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#include "ns3/queue.h" |
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#include "ns3/composite-trace-resolver.h" |
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#include "p2p-net-device.h" |
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#include "p2p-channel.h" |
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#include "p2p-phy.h" |
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NS_DEBUG_COMPONENT_DEFINE ("PointToPointNetDevice"); |
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namespace ns3 { |
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PointToPointNetDevice::PointToPointNetDevice(Node* node) : |
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NetDevice(node, MacAddress("00:00:00:00:00:00")) |
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{ |
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NS_DEBUG ("PointToPointNetDevice::PointToPointNetDevice (" << node << ")"); |
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// BUGBUG FIXME |
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// |
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// You _must_ support broadcast to get any sort of packet from the ARP layer. |
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EnableBroadcast (MacAddress ("ff:ff:ff:ff:ff:ff")); |
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EnableMulticast(); |
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EnablePointToPoint(); |
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SetMtu(512); // bytes |
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m_phy = new PointToPointPhy(node, this); |
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} |
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PointToPointNetDevice::~PointToPointNetDevice() |
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{ |
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NS_DEBUG ("PointToPointNetDevice::~PointToPointNetDevice ()"); |
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delete m_phy; |
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} |
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bool |
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PointToPointNetDevice::SendTo (Packet& p, const MacAddress& dest) |
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{ |
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NS_DEBUG ("PointToPointNetDevice::SendTo (" << &p << ", " << &dest << ")"); |
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assert (IsLinkUp ()); |
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#ifdef NOTYET |
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struct NetDevicePacketDestAddress tag; |
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tag.address = address; |
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p.AddTag (tag); |
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#endif |
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if (m_queue->Enqueue(p) ) |
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{ |
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NotifyDataAvailable (); |
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return true; |
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} |
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return false; |
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} |
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TraceResolver * |
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PointToPointNetDevice::DoCreateTraceResolver (TraceContext const &context) |
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{ |
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CompositeTraceResolver *resolver = new CompositeTraceResolver (context); |
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resolver->Add ("queue", |
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MakeCallback (&Queue::CreateTraceResolver, m_queue), |
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PointToPointNetDevice::QUEUE); |
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resolver->Add ("rx", |
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m_rxTrace, |
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PointToPointNetDevice::RX); |
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return resolver; |
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} |
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bool |
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PointToPointNetDevice::Attach (PointToPointChannel* ch) |
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{ |
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NS_DEBUG ("PointToPointNetDevice::Attach (" << &ch << ")"); |
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m_channel = ch; |
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m_phy->Attach (m_channel); |
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/* |
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* For now, this device is up whenever a channel is attached to it. |
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* In fact, it should become up only when the second device |
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* is attached to the channel. So, there should be a way for |
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* a PointToPointChannel to notify both of its attached devices |
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* that the channel is 'complete', hence that the devices are |
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* up, hence that they can call NotifyLinkUp. |
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*/ |
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NotifyLinkUp (); |
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return true; |
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} |
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void |
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PointToPointNetDevice::AddQueue (Queue* q) |
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{ |
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NS_DEBUG ("PointToPointNetDevice::AddQueue (" << q << ")"); |
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m_queue = q; |
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} |
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void |
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PointToPointNetDevice::Receive (Packet& p) |
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{ |
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// ignore return value for now. |
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NS_DEBUG ("PointToPointNetDevice::Receive (" << &p << ")"); |
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m_rxTrace (p); |
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ForwardUp (p); |
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} |
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void |
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PointToPointNetDevice::NotifyDataAvailable(void) |
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{ |
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NS_DEBUG ("PointToPointNetDevice::NotifyDataAvailable ()"); |
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Packet p; |
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bool found = GetQueue ()->Dequeue (p); |
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if (found) |
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{ |
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#ifdef NOTYET |
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struct NetDevicePacketDestAddress tag; |
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p.PeekTag (tag); |
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// send packet to address tag.address |
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#endif |
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NS_DEBUG ("PointToPointNetDevice::NotifyDataAvailable (): Dequeued"); |
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m_phy->Send(p); |
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} |
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} |
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Queue* |
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PointToPointNetDevice::GetQueue(void) const |
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{ |
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return m_queue; |
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} |
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PointToPointChannel* |
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PointToPointNetDevice::GetChannel(void) const |
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{ |
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return m_channel; |
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} |
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} // namespace ns3 |