117 lines
3.5 KiB
C++
117 lines
3.5 KiB
C++
/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
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/*
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* Copyright (c) 2007 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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* Authors:
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* 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/debug.h"
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#include "ns3/composite-trace-resolver.h"
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#include "ns3/node.h"
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#include "ns3/net-device.h"
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#include "ns3/address.h"
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#include "arp-ipv4-interface.h"
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#include "ipv4-l3-protocol.h"
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#include "arp-l3-protocol.h"
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NS_DEBUG_COMPONENT_DEFINE ("ArpIpv4Interface");
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namespace ns3 {
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ArpIpv4Interface::ArpIpv4Interface (Ptr<Node> node, Ptr<NetDevice> device)
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: Ipv4Interface (device),
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m_node (node)
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{
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NS_DEBUG ("ArpIpv4Interface::ArpIpv4Interface ()");
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}
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ArpIpv4Interface::~ArpIpv4Interface ()
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{
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NS_DEBUG ("ArpIpv4Interface::~ArpIpv4Interface ()");
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}
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TraceResolver *
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ArpIpv4Interface::DoCreateTraceResolver (TraceContext const &context)
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{
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NS_DEBUG ("ArpIpv4Interface::DoCreateTraceResolver ()");
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CompositeTraceResolver *resolver = new CompositeTraceResolver (context);
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if (GetDevice () != 0)
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{
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resolver->Add ("netdevice",
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MakeCallback (&NetDevice::CreateTraceResolver, PeekPointer (GetDevice ())));
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}
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return resolver;
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}
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void
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ArpIpv4Interface::SendTo (Packet p, Ipv4Address dest)
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{
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NS_DEBUG ("ArpIpv4Interface::SendTo (" << &p << ", " << dest << ")");
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NS_ASSERT (GetDevice () != 0);
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if (GetDevice ()->NeedsArp ())
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{
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NS_DEBUG ("ArpIpv4Interface::SendTo (): Needs ARP");
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Ptr<ArpL3Protocol> arp =
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m_node->QueryInterface<ArpL3Protocol> (ArpL3Protocol::iid);
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Address hardwareDestination;
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bool found;
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if (dest.IsBroadcast () ||
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dest.IsSubnetDirectedBroadcast (GetNetworkMask ()) )
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{
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NS_DEBUG ("ArpIpv4Interface::SendTo (): IsBroadcast");
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hardwareDestination = GetDevice ()->GetBroadcast ();
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found = true;
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}
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else if (dest.IsMulticast ())
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{
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NS_DEBUG ("ArpIpv4Interface::SendTo (): IsMulticast");
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NS_ASSERT_MSG(GetDevice ()->IsMulticast (),
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"ArpIpv4Interface::SendTo (): Sending multicast packet over "
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"non-multicast device");
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hardwareDestination = GetDevice ()->MakeMulticastAddress(dest);
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found = true;
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}
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else
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{
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NS_DEBUG ("ArpIpv4Interface::SendTo (): ARP Lookup");
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found = arp->Lookup (p, dest, GetDevice (), &hardwareDestination);
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}
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if (found)
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{
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NS_DEBUG ("ArpIpv4Interface::SendTo (): Address Resolved. Send.");
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GetDevice ()->Send (p, hardwareDestination,
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Ipv4L3Protocol::PROT_NUMBER);
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}
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}
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else
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{
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NS_DEBUG ("ArpIpv4Interface::SendTo (): Doesn't need ARP");
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GetDevice ()->Send (p, GetDevice ()->GetBroadcast (),
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Ipv4L3Protocol::PROT_NUMBER);
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}
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}
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}//namespace ns3
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