Ethernet.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_ETHERNET_H
#define __LIB_LIBNET_ETHERNET_H
 
#include <Types.h>
#include <Macros.h>
#include <Log.h>
#include <String.h>
#include "NetworkProtocol.h"
 
class ARP;
class IPV4;
class ICMP;
 
class Ethernet : public NetworkProtocol
{
  public:
 
    static const Size CRCSize = 4;
 
    typedef struct Address
    {
        u8 addr[6];
    }
    PACKED Address;
 
    typedef struct Header
    {
        Address destination;    
        Address source;         
        u16 type;               
    }
    PACKED Header;
 
    enum PayloadType
    {
        IPV4 = 0x0800u,         
        IPV6 = 0x86ddu,         
        ARP  = 0x0806u          
    };
 
  public:
 
    Ethernet(NetworkServer &server,
             NetworkDevice &device);
 
    virtual ~Ethernet();
 
    virtual FileSystem::Result initialize();
 
    virtual FileSystem::Result getAddress(Address *address);
 
    virtual FileSystem::Result setAddress(const Address *address);
 
    virtual FileSystem::Result getTransmitPacket(NetworkQueue::Packet **pkt,
                                                 const void *address,
                                                 const Size addressSize,
                                                 const Identifier protocol,
                                                 const Size payloadSize);
 
    static const String toString(const Address address);
 
    void setARP(::ARP *arp);
 
    void setIP(::IPV4 *ip);
 
    virtual FileSystem::Result process(const NetworkQueue::Packet *pkt,
                                       const Size offset);
 
  private:
 
    Address m_address;
 
    ::ARP *m_arp;
 
    ::IPV4 *m_ipv4;
};
 
Log & operator << (Log &log, const Ethernet::Address & addr);
 
#endif /* __LIB_LIBNET_ETHERNET_H */