etherpkt.hh revision 572
1/* 2 * Copyright (c) 2003 The Regents of The University of Michigan 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29/* @file 30 * Reference counted class containing ethernet packet data 31 */ 32 33#ifndef __ETHERPKT_HH__ 34#define __ETHERPKT_HH__ 35 36#include <iosfwd> 37#include <memory> 38 39#include "sim/host.hh" 40#include "base/refcnt.hh" 41 42class Checkpoint; 43 44/* 45 * Reference counted class containing ethernet packet data 46 */ 47class EtherPacket : public RefCounted 48{ 49 public: 50 uint8_t *data; 51 int length; 52 53 public: 54 EtherPacket() : data(NULL), length(0) {} 55 EtherPacket(std::auto_ptr<uint8_t> d, int l) 56 : data(d.release()), length(l) {} 57 ~EtherPacket() { if (data) delete [] data; } 58 59 public: 60 bool IsUnicast() { return data[0] == 0x00; } 61 bool IsMulticast() { return data[0] == 0x01; } 62 bool IsBroadcast() { return data[0] == 0xff; } 63 64 void serialize(std::ostream &os); 65 void unserialize(Checkpoint *cp, const std::string §ion); 66}; 67 68typedef RefCountingPtr<EtherPacket> PacketPtr; 69 70#endif // __ETHERPKT_HH__ 71