author | Mathieu Lacage <mathieu.lacage@sophia.inria.fr> |
Thu, 13 Mar 2008 12:56:49 -0700 | |
changeset 2602 | d9262bff6df2 |
parent 2592 | 3ebf97150166 |
child 2720 | 3c7d9f8c9034 |
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) 2007 University of Washington |
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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: Craig Dowell <craigdo@ee.washington.edu> |
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*/ |
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#include "point-to-point-channel.h" |
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#include "point-to-point-net-device.h" |
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#include "ns3/packet.h" |
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#include "ns3/simulator.h" |
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#include "ns3/log.h" |
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NS_LOG_COMPONENT_DEFINE ("PointToPointChannel"); |
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namespace ns3 { |
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TypeId |
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PointToPointChannel::GetTypeId (void) |
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{ |
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static TypeId tid = TypeId ("ns3::PointToPointChannel") |
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.SetParent<Channel> () |
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.AddConstructor<PointToPointChannel> () |
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.AddAttribute ("BitRate", "The maximum bitrate of the channel", |
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DataRate (0xffffffff), |
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MakeDataRateAccessor (&PointToPointChannel::m_bps), |
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MakeDataRateChecker ()) |
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.AddAttribute ("Delay", "Transmission delay through the channel", |
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Seconds (0), |
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MakeTimeAccessor (&PointToPointChannel::m_delay), |
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MakeTimeChecker ()) |
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; |
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return tid; |
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} |
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// |
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// By default, you get a channel with the name "PointToPoint Channel" that |
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// has an "infitely" fast transmission speed and zero delay. |
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PointToPointChannel::PointToPointChannel() |
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: |
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Channel ("PointToPoint Channel"), |
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m_nDevices(0) |
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{ |
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NS_LOG_FUNCTION; |
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} |
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void |
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PointToPointChannel::Attach(Ptr<PointToPointNetDevice> device) |
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{ |
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NS_LOG_FUNCTION; |
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NS_LOG_PARAMS (this << device); |
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NS_ASSERT(m_nDevices < N_DEVICES && "Only two devices permitted"); |
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NS_ASSERT(device != 0); |
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m_link[m_nDevices++].m_src = device; |
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// |
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// If we have both devices connected to the channel, then finish introducing |
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// the two halves and set the links to IDLE. |
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// |
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if (m_nDevices == N_DEVICES) |
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{ |
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m_link[0].m_dst = m_link[1].m_src; |
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m_link[1].m_dst = m_link[0].m_src; |
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m_link[0].m_state = IDLE; |
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m_link[1].m_state = IDLE; |
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} |
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} |
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bool |
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PointToPointChannel::TransmitStart(Ptr<Packet> p, |
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Ptr<PointToPointNetDevice> src, |
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const Time& txTime) |
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{ |
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NS_LOG_FUNCTION; |
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NS_LOG_PARAMS (this << p << src); |
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NS_LOG_LOGIC ("UID is " << p->GetUid () << ")"); |
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NS_ASSERT(m_link[0].m_state != INITIALIZING); |
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NS_ASSERT(m_link[1].m_state != INITIALIZING); |
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uint32_t wire = src == m_link[0].m_src ? 0 : 1; |
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// Here we schedule the packet receive event at the receiver, |
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// which simplifies this model quite a bit. The channel just |
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// adds the propagation delay time |
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Simulator::Schedule (txTime + m_delay, |
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&PointToPointNetDevice::Receive, |
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m_link[wire].m_dst, p); |
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return true; |
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} |
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uint32_t |
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PointToPointChannel::GetNDevices (void) const |
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{ |
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NS_LOG_FUNCTION; |
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return m_nDevices; |
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} |
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Ptr<PointToPointNetDevice> |
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PointToPointChannel::GetDevice (uint32_t i) const |
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{ |
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NS_LOG_FUNCTION; |
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NS_ASSERT(i < 2); |
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return m_link[i].m_src; |
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} |
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const DataRate& |
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PointToPointChannel::GetDataRate (void) |
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{ |
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NS_LOG_FUNCTION; |
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return m_bps; |
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} |
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const Time& |
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PointToPointChannel::GetDelay (void) |
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{ |
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NS_LOG_FUNCTION; |
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return m_delay; |
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} |
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Ptr<NetDevice> |
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PointToPointChannel::DoGetDevice (uint32_t i) const |
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{ |
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NS_LOG_FUNCTION; |
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return GetDevice (i); |
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} |
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|
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} // namespace ns3 |