diff --git a/examples/tap-net-device.cc b/examples/tap-net-device.cc new file mode 100644 index 000000000..f0d21f66f --- /dev/null +++ b/examples/tap-net-device.cc @@ -0,0 +1,278 @@ +/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation; + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * Based on simple-global-routing.cc + * ns-2 simple.tcl script (ported from ns-2) + * Originally authored by Steve McCanne, 12/19/1996 + */ + +// Port of ns-2/tcl/ex/simple.tcl to ns-3 +// +// Network topology +// +// n0 +// \ 5 Mb/s, 2ms +// \ 1.5Mb/s, 10ms +// n2 -------------------------n3 +// / +// / 5 Mb/s, 2ms +// n1 +// +// - all links are point-to-point links with indicated one-way BW/delay +// - CBR/UDP flows from n0 to n3, and from n3 to n1 +// - FTP/TCP flow from n0 to n3, starting at time 1.2 to time 1.35 sec. +// - UDP packet size of 210 bytes, with per-packet interval 0.00375 sec. +// (i.e., DataRate of 448,000 bps) +// - DropTail queues +// - Tracing of queues and packet receptions to file "simple-global-routing.tr" + +// Tunneling changes (relative to the simple-global-routing example): +// n0 will receive an extra virtual interface with address 11.0.0.1 +// n1 will also receive an extra virtual interface with the same address 11.0.0.1 +// n3 will receive an extra virtual interface with address 11.0.0.254 +// The flows will be between 11.0.0.x (tunnel) addresses instead of 10.1.x.y ones +// n3 will decide, on a per-packet basis, via random number, whether to +// send the packet to n0 or to n1. + +#include +#include +#include +#include + +#include "ns3/core-module.h" +#include "ns3/simulator-module.h" +#include "ns3/node-module.h" +#include "ns3/helper-module.h" +#include "ns3/global-route-manager.h" +#include "ns3/tap-net-device.h" + +using namespace ns3; + +NS_LOG_COMPONENT_DEFINE ("TapNetDeviceExample"); + +class Tunnel +{ + Ptr m_n3Socket; + Ptr m_n0Socket; + Ptr m_n1Socket; + Ipv4Address m_n3Address; + Ipv4Address m_n0Address; + Ipv4Address m_n1Address; + UniformVariable m_rng; + Ptr m_n0Tap; + Ptr m_n1Tap; + Ptr m_n3Tap; + + + bool + N0N1VirtualSend (Ptr packet, const Address& source, const Address& dest, uint16_t protocolNumber) + { + m_n3Socket->SendTo (packet, 0, InetSocketAddress (m_n3Address, 667)); + return true; + } + + bool + N3VirtualSend (Ptr packet, const Address& source, const Address& dest, uint16_t protocolNumber) + { + + if (m_rng.GetValue () < 0.25) + { + m_n0Socket->SendTo (packet, 0, InetSocketAddress (m_n0Address, 667)); + } + else + { + m_n1Socket->SendTo (packet, 0, InetSocketAddress (m_n1Address, 667)); + } + return true; + } + + void N3SocketRecv (Ptr socket) + { + Ptr packet = socket->Recv (65535, 0); + m_n3Tap->Receive (packet, 0x0800, Address ()); + } + + void N0SocketRecv (Ptr socket) + { + Ptr packet = socket->Recv (65535, 0); + m_n0Tap->Receive (packet, 0x0800, Address ()); + } + + void N1SocketRecv (Ptr socket) + { + Ptr packet = socket->Recv (65535, 0); + m_n0Tap->Receive (packet, 0x0800, Address ()); + } + +public: + + Tunnel (Ptr n3, Ptr n0, Ptr n1, + Ipv4Address n3Addr, Ipv4Address n0Addr, Ipv4Address n1Addr) + : m_n3Address (n3Addr), m_n0Address (n0Addr), m_n1Address (n1Addr) + { + m_n3Socket = Socket::CreateSocket (n3, TypeId::LookupByName ("ns3::UdpSocketFactory")); + m_n3Socket->Bind (InetSocketAddress (Ipv4Address::GetAny (), 667)); + m_n3Socket->SetRecvCallback (MakeCallback (&Tunnel::N3SocketRecv, this)); + + m_n0Socket = Socket::CreateSocket (n0, TypeId::LookupByName ("ns3::UdpSocketFactory")); + m_n0Socket->Bind (InetSocketAddress (Ipv4Address::GetAny (), 667)); + m_n0Socket->SetRecvCallback (MakeCallback (&Tunnel::N0SocketRecv, this)); + + m_n1Socket = Socket::CreateSocket (n1, TypeId::LookupByName ("ns3::UdpSocketFactory")); + m_n1Socket->Bind (InetSocketAddress (Ipv4Address::GetAny (), 667)); + m_n1Socket->SetRecvCallback (MakeCallback (&Tunnel::N1SocketRecv, this)); + + // n0 tap device + m_n0Tap = CreateObject (); + m_n0Tap->SetSendFromCallback (MakeCallback (&Tunnel::N0N1VirtualSend, this)); + n0->AddDevice (m_n0Tap); + Ptr ipv4 = n0->GetObject (); + uint32_t i = ipv4->AddInterface (m_n0Tap); + ipv4->AddAddress (i, Ipv4InterfaceAddress (Ipv4Address ("11.0.0.1"), Ipv4Mask ("255.255.255.0"))); + ipv4->SetUp (i); + + // n1 tap device + m_n1Tap = CreateObject (); + m_n1Tap->SetSendFromCallback (MakeCallback (&Tunnel::N0N1VirtualSend, this)); + n1->AddDevice (m_n1Tap); + ipv4 = n1->GetObject (); + i = ipv4->AddInterface (m_n1Tap); + ipv4->AddAddress (i, Ipv4InterfaceAddress (Ipv4Address ("11.0.0.1"), Ipv4Mask ("255.255.255.0"))); + ipv4->SetUp (i); + + // n3 tap device + m_n3Tap = CreateObject (); + m_n3Tap->SetSendFromCallback (MakeCallback (&Tunnel::N3VirtualSend, this)); + n3->AddDevice (m_n3Tap); + ipv4 = n3->GetObject (); + i = ipv4->AddInterface (m_n3Tap); + ipv4->AddAddress (i, Ipv4InterfaceAddress (Ipv4Address ("11.0.0.254"), Ipv4Mask ("255.255.255.0"))); + ipv4->SetUp (i); + + } + + +}; + + + +int +main (int argc, char *argv[]) +{ + // Users may find it convenient to turn on explicit debugging + // for selected modules; the below lines suggest how to do this +#if 0 + LogComponentEnable ("SimpleGlobalRoutingExample", LOG_LEVEL_INFO); +#endif + + // Set up some default values for the simulation. Use the + Config::SetDefault ("ns3::OnOffApplication::PacketSize", UintegerValue (210)); + Config::SetDefault ("ns3::OnOffApplication::DataRate", StringValue ("448kb/s")); + + //DefaultValue::Bind ("DropTailQueue::m_maxPackets", 30); + + // Allow the user to override any of the defaults and the above + // DefaultValue::Bind ()s at run-time, via command-line arguments + CommandLine cmd; + cmd.Parse (argc, argv); + + // Here, we will explicitly create four nodes. In more sophisticated + // topologies, we could configure a node factory. + NS_LOG_INFO ("Create nodes."); + NodeContainer c; + c.Create (4); + NodeContainer n0n2 = NodeContainer (c.Get(0), c.Get (2)); + NodeContainer n1n2 = NodeContainer (c.Get(1), c.Get (2)); + NodeContainer n3n2 = NodeContainer (c.Get(3), c.Get (2)); + + InternetStackHelper internet; + internet.Install (c); + + // We create the channels first without any IP addressing information + NS_LOG_INFO ("Create channels."); + PointToPointHelper p2p; + p2p.SetDeviceAttribute ("DataRate", StringValue ("5Mbps")); + p2p.SetChannelAttribute ("Delay", StringValue ("2ms")); + NetDeviceContainer d0d2 = p2p.Install (n0n2); + + NetDeviceContainer d1d2 = p2p.Install (n1n2); + + p2p.SetDeviceAttribute ("DataRate", StringValue ("1500kbps")); + p2p.SetChannelAttribute ("Delay", StringValue ("10ms")); + NetDeviceContainer d3d2 = p2p.Install (n3n2); + + // Later, we add IP addresses. + NS_LOG_INFO ("Assign IP Addresses."); + Ipv4AddressHelper ipv4; + ipv4.SetBase ("10.1.1.0", "255.255.255.0"); + Ipv4InterfaceContainer i0i2 = ipv4.Assign (d0d2); + + ipv4.SetBase ("10.1.2.0", "255.255.255.0"); + Ipv4InterfaceContainer i1i2 = ipv4.Assign (d1d2); + + ipv4.SetBase ("10.1.3.0", "255.255.255.0"); + Ipv4InterfaceContainer i3i2 = ipv4.Assign (d3d2); + + // Create router nodes, initialize routing database and set up the routing + // tables in the nodes. + GlobalRouteManager::PopulateRoutingTables (); + + // Add the tunnels + Tunnel tunnel (c.Get (3), c.Get (0), c.Get (1), + i3i2.GetAddress (0), i0i2.GetAddress (0), i1i2.GetAddress (0)); + + // Create the OnOff application to send UDP datagrams of size + // 210 bytes at a rate of 448 Kb/s + NS_LOG_INFO ("Create Applications."); + uint16_t port = 9; // Discard port (RFC 863) + OnOffHelper onoff ("ns3::UdpSocketFactory", + Address (InetSocketAddress (Ipv4Address ("11.0.0.254"), port))); + onoff.SetAttribute ("OnTime", RandomVariableValue (ConstantVariable (1))); + onoff.SetAttribute ("OffTime", RandomVariableValue (ConstantVariable (0))); + ApplicationContainer apps = onoff.Install (c.Get (0)); + apps.Start (Seconds (1.0)); + apps.Stop (Seconds (10.0)); + + // Create a packet sink to receive these packets + PacketSinkHelper sink ("ns3::UdpSocketFactory", + Address (InetSocketAddress (Ipv4Address::GetAny (), port))); + apps = sink.Install (c.Get (3)); + apps.Start (Seconds (1.0)); + apps.Stop (Seconds (10.0)); + + // Create a similar flow from n3 to n1, starting at time 1.1 seconds + onoff.SetAttribute ("Remote", + AddressValue (InetSocketAddress (Ipv4Address ("11.0.0.2"), port))); + apps = onoff.Install (c.Get (3)); + apps.Start (Seconds (1.1)); + apps.Stop (Seconds (10.0)); + + // Create a packet sink to receive these packets + apps = sink.Install (c.Get (1)); + apps.Start (Seconds (1.1)); + apps.Stop (Seconds (10.0)); + + std::ofstream ascii; + ascii.open ("tap-net-device.tr"); + PointToPointHelper::EnablePcapAll ("tap-net-device"); + PointToPointHelper::EnableAsciiAll (ascii); + + NS_LOG_INFO ("Run Simulation."); + Simulator::Run (); + Simulator::Destroy (); + NS_LOG_INFO ("Done."); + + return 0; +} diff --git a/examples/wscript b/examples/wscript index 03ea28855..0af2e4583 100644 --- a/examples/wscript +++ b/examples/wscript @@ -40,6 +40,10 @@ def build(bld): ['point-to-point', 'internet-stack', 'global-routing']) obj.source = 'simple-global-routing.cc' + obj = bld.create_ns3_program('tap-net-device', + ['point-to-point', 'internet-stack', 'global-routing', 'tap-net-device']) + obj.source = 'tap-net-device.cc' + obj = bld.create_ns3_program('simple-alternate-routing', ['point-to-point', 'internet-stack', 'global-routing']) obj.source = 'simple-alternate-routing.cc'