src/dev/net/etherpkt.cc

   1 /*
   2  * Copyright (c) 2004-2005 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 #include "dev/net/etherpkt.hh"
  30
  31 #include <iostream>
  32
  33 #include "base/inet.hh"
  34 #include "base/logging.hh"
  35 #include "sim/serialize.hh"
  36
  37 using namespace std;
  38
  39 void
  40 EthPacketData::serialize(const string &base, CheckpointOut &cp) const
  41 {
  42     paramOut(cp, base + ".simLength", simLength);
  43     paramOut(cp, base + ".bufLength", bufLength);
  44     paramOut(cp, base + ".length", length);
  45     arrayParamOut(cp, base + ".data", data, length);
  46 }
  47
  48 void
  49 EthPacketData::unserialize(const string &base, CheckpointIn &cp)
  50 {
  51     paramIn(cp, base + ".length", length);
  52     unsigned chkpt_buf_length;
  53     if (optParamIn(cp, base + ".bufLength", chkpt_buf_length)) {
  54         // If bufLength is in the checkpoint, make sure that the current buffer
  55         // is unallocated or that the checkpoint requested size is smaller than
  56         // the current buffer.
  57         assert(!data || chkpt_buf_length <= bufLength);
  58         bufLength = chkpt_buf_length;
  59     } else {
  60         // If bufLength is not in the checkpoint, try to use the existing
  61         // buffer or use length to size the buffer
  62         if (!data)
  63             bufLength = length;
  64     }
  65     assert(length <= bufLength);
  66     if (!data)
  67         data = new uint8_t[bufLength];
  68     arrayParamIn(cp, base + ".data", data, length);
  69     if (!optParamIn(cp, base + ".simLength", simLength))
  70         simLength = length;
  71 }
  72