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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,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* @file
* Reference counted class containing ethernet packet data
*/
#ifndef __ETHERPKT_HH__
#define __ETHERPKT_HH__
#include <iosfwd>
#include <memory>
#include <assert.h>
#include "base/refcnt.hh"
#include "sim/host.hh"
/*
* Reference counted class containing ethernet packet data
*/
class Checkpoint;
class PacketData : public RefCounted
{
public:
/*
* Pointer to packet data will be deleted
*/
uint8_t *data;
/*
* Length of the current packet
*/
int length;
/*
* Extra space taken up by the packet in whatever data structure
* it is in.
*
* NOTE: This can only be use by *one* data structure at a time!
*/
int slack;
public:
PacketData() : data(NULL), length(0), slack(0) { }
explicit PacketData(size_t size)
: data(new uint8_t[size]), length(0), slack(0) { }
PacketData(std::auto_ptr<uint8_t> d, int l, int s = 0)
: data(d.release()), length(l), slack(s) { }
~PacketData() { if (data) delete [] data; }
public:
void serialize(const std::string &base, std::ostream &os);
void unserialize(const std::string &base, Checkpoint *cp,
const std::string §ion);
};
typedef RefCountingPtr<PacketData> PacketPtr;
#endif // __ETHERPKT_HH__
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