cd4b26b6ae
Changeset 11701 only serialized the useful portion of of an ethernet packets' payload. However, the device models expect each ethernet packet to contain a 16KB buffer, even if there is no data in it. This patch adds a 'bufLength' field to EthPacketData so the original size of the packet buffer can always be unserialized. Reported-by: Gabor Dozsa <Gabor.Dozsa@arm.com>
93 lines
3.0 KiB
C++
93 lines
3.0 KiB
C++
/*
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* Copyright (c) 2002-2005 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Nathan Binkert
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* Lisa Hsu
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*/
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/* @file
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* Reference counted class containing ethernet packet data
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*/
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#ifndef __DEV_NET_ETHERPKT_HH__
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#define __DEV_NET_ETHERPKT_HH__
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#include <cassert>
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#include <iosfwd>
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#include <memory>
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#include "base/types.hh"
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#include "sim/serialize.hh"
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/*
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* Reference counted class containing ethernet packet data
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*/
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class EthPacketData
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{
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public:
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/**
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* Pointer to packet data will be deleted
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*/
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uint8_t *data;
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/**
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* Total size of the allocated data buffer.
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*/
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unsigned bufLength;
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/**
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* Amount of space occupied by the payload in the data buffer
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*/
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unsigned length;
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/**
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* Effective length, used for modeling timing in the simulator.
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* This could be different from length if the packets are assumed
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* to use a tightly packed or compressed format, but it's not worth
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* the performance/complexity hit to perform that packing or compression
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* in the simulation.
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*/
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unsigned simLength;
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EthPacketData()
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: data(nullptr), bufLength(0), length(0), simLength(0)
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{ }
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explicit EthPacketData(unsigned size)
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: data(new uint8_t[size]), bufLength(size), length(0), simLength(0)
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{ }
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~EthPacketData() { if (data) delete [] data; }
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void serialize(const std::string &base, CheckpointOut &cp) const;
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void unserialize(const std::string &base, CheckpointIn &cp);
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};
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typedef std::shared_ptr<EthPacketData> EthPacketPtr;
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#endif // __DEV_NET_ETHERPKT_HH__
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