arp-l3-protocol.h

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/*
 * Copyright (c) 2006 INRIA
 *
 * 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
 *
 * Author: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
 */
#ifndef ARP_L3_PROTOCOL_H
#define ARP_L3_PROTOCOL_H
 
#include "ns3/address.h"
#include "ns3/ipv4-header.h"
#include "ns3/net-device.h"
#include "ns3/ptr.h"
#include "ns3/random-variable-stream.h"
#include "ns3/traced-callback.h"
 
#include <list>
 
namespace ns3
{
 
class ArpCache;
class NetDevice;
class Node;
class Packet;
class Ipv4Interface;
class TrafficControlLayer;
 
class ArpL3Protocol : public Object
{
  public:
    static TypeId GetTypeId();
    static const uint16_t PROT_NUMBER; 
 
    ArpL3Protocol();
    ~ArpL3Protocol() override;
 
    // Delete copy constructor and assignment operator to avoid misuse
    ArpL3Protocol(const ArpL3Protocol&) = delete;
    ArpL3Protocol& operator=(const ArpL3Protocol&) = delete;
 
    void SetNode(Ptr<Node> node);
 
    void SetTrafficControl(Ptr<TrafficControlLayer> tc);
 
    Ptr<ArpCache> CreateCache(Ptr<NetDevice> device, Ptr<Ipv4Interface> interface);
 
    void Receive(Ptr<NetDevice> device,
                 Ptr<const Packet> p,
                 uint16_t protocol,
                 const Address& from,
                 const Address& to,
                 NetDevice::PacketType packetType);
    bool Lookup(Ptr<Packet> p,
                const Ipv4Header& ipHeader,
                Ipv4Address destination,
                Ptr<NetDevice> device,
                Ptr<ArpCache> cache,
                Address* hardwareDestination);
 
    int64_t AssignStreams(int64_t stream);
 
  protected:
    void DoDispose() override;
    /*
     * This function will notify other components connected to the node that a new stack member is
     * now connected This will be used to notify Layer 3 protocol of layer 4 protocol stack to
     * connect them together.
     */
    void NotifyNewAggregate() override;
 
  private:
    typedef std::list<Ptr<ArpCache>> CacheList; 
 
    Ptr<ArpCache> FindCache(Ptr<NetDevice> device);
 
    void SendArpRequest(Ptr<const ArpCache> cache, Ipv4Address to);
    void SendArpReply(Ptr<const ArpCache> cache, Ipv4Address myIp, Ipv4Address toIp, Address toMac);
 
    CacheList m_cacheList;                         
    Ptr<Node> m_node;                              
    TracedCallback<Ptr<const Packet>> m_dropTrace; 
    Ptr<RandomVariableStream> m_requestJitter;     
    Ptr<TrafficControlLayer> m_tc;                 
};
 
} // namespace ns3
 
#endif /* ARP_L3_PROTOCOL_H */