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  * Authors: Nathan Binkert
  29  */
  30
  31 #include "dev/net/etherpkt.hh"
  32
  33 #include <iostream>
  34
  35 #include "base/inet.hh"
  36 #include "base/misc.hh"
  37 #include "sim/serialize.hh"
  38
  39 using namespace std;
  40
  41 void
  42 EthPacketData::serialize(const string &base, CheckpointOut &cp) const
  43 {
  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     if (length)
  53         arrayParamIn(cp, base + ".data", data, length);
  54 }
  55
  56 void
  57 EthPacketData::packAddress(uint8_t *src_addr,
  58                            uint8_t *dst_addr,
  59                            unsigned &nbytes)
  60 {
  61     Net::EthHdr *hdr = (Net::EthHdr *)data;
  62     assert(hdr->src().size() == hdr->dst().size());
  63     if (nbytes < hdr->src().size())
  64         panic("EthPacketData::packAddress() Buffer overflow");
  65
  66     memcpy(dst_addr, hdr->dst().bytes(), hdr->dst().size());
  67     memcpy(src_addr, hdr->src().bytes(), hdr->src().size());
  68
  69     nbytes = hdr->src().size();
  70 }
  71