NetworkProtocol.h

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/*
 * Copyright (C) 2015 Niek Linnenbank
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * 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, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef __LIB_LIBNET_NETWORKPROTOCOL_H
#define __LIB_LIBNET_NETWORKPROTOCOL_H
 
#include <Directory.h>
#include <Types.h>
#include "NetworkQueue.h"
 
class NetworkServer;
class NetworkDevice;
 
class NetworkProtocol : public Directory
{
  protected:
 
    enum Identifier
    {
        Ethernet = 1,
        IPV4,
        ARP,
        ICMP,
        UDP,
        TCP
    };
 
  public:
 
    NetworkProtocol(NetworkServer &server,
                    NetworkDevice &device,
                    NetworkProtocol &parent);
 
    virtual ~NetworkProtocol();
 
 
    virtual const Size getMaximumPacketSize() const;
 
    virtual FileSystem::Result initialize() = 0;
 
    virtual FileSystem::Result getTransmitPacket(NetworkQueue::Packet **pkt,
                                                 const void *address,
                                                 const Size addressSize,
                                                 const Identifier protocol,
                                                 const Size payloadSize);
 
    virtual FileSystem::Result process(const NetworkQueue::Packet *pkt,
                                       const Size offset) = 0;
 
  protected:
 
    NetworkServer &m_server;
 
    NetworkDevice &m_device;
 
    NetworkProtocol &m_parent;
};
 
#endif /* __LIB_LIBNET_NETWORKPROTOCOL_H */