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/*
* Copyright (c) 2002-2004 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 "base/inet.hh"
#include "sim/host.hh"
/*
* Reference counted class containing ethernet packet data
*/
class Checkpoint;
class PacketData : public RefCounted
{
public:
uint8_t *data;
int length;
public:
PacketData() : data(NULL), length(0) { }
PacketData(std::auto_ptr<uint8_t> d, int l)
: data(d.release()), length(l) { }
~PacketData() { if (data) delete [] data; }
public:
const EthHdr *eth() const { return (const EthHdr *)data; }
const IpHdr *ip() const {const EthHdr *h = eth(); return h ? h->ip() : 0;}
const TcpHdr *tcp() const {const IpHdr *h = ip(); return h ? h->tcp() : 0;}
const UdpHdr *udp() const {const IpHdr *h = ip(); return h ? h->udp() : 0;}
EthHdr *eth() { return (EthHdr *)data; }
IpHdr *ip() { EthHdr *h = eth(); return h ? h->ip() : 0; }
TcpHdr *tcp() { IpHdr *h = ip(); return h ? h->tcp() : 0; }
UdpHdr *udp() { IpHdr *h = ip(); return h ? h->udp() : 0; }
public:
void serialize(std::ostream &os);
void unserialize(Checkpoint *cp, const std::string §ion);
};
typedef RefCountingPtr<PacketData> PacketPtr;
#endif // __ETHERPKT_HH__
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