etherpkt.hh

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/*
 * Copyright (c) 2002-2005 The Regents of The University of Michigan
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met: redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer;
 * redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution;
 * neither the name of the copyright holders nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 */
 
/* @file
 * Reference counted class containing ethernet packet data
 */
 
#ifndef __DEV_NET_ETHERPKT_HH__
#define __DEV_NET_ETHERPKT_HH__
 
#include <cassert>
#include <iosfwd>
#include <memory>
 
#include "base/types.hh"
#include "sim/serialize.hh"
 
namespace gem5
{
 
/*
 * Reference counted class containing ethernet packet data
 */
class EthPacketData
{
  public:
    uint8_t *data;
 
    unsigned bufLength;
 
    unsigned length;
 
    unsigned simLength;
 
    EthPacketData()
        : data(nullptr), bufLength(0), length(0), simLength(0)
    { }
 
    explicit EthPacketData(unsigned size)
        : data(new uint8_t[size]), bufLength(size), length(0), simLength(0)
    { }
 
    ~EthPacketData() { if (data) delete [] data; }
 
    void serialize(const std::string &base, CheckpointOut &cp) const;
    void unserialize(const std::string &base, CheckpointIn &cp);
};
 
typedef std::shared_ptr<EthPacketData> EthPacketPtr;
 
} // namespace gem5
 
#endif // __DEV_NET_ETHERPKT_HH__