src/dev/net/multi_packet.cc

   1 /*
   2  * Copyright (c) 2015 ARM Limited
   3  * All rights reserved
   4  *
   5  * The license below extends only to copyright in the software and shall
   6  * not be construed as granting a license to any other intellectual
   7  * property including but not limited to intellectual property relating
   8  * to a hardware implementation of the functionality of the software
   9  * licensed hereunder.  You may use the software subject to the license
  10  * terms below provided that you ensure that this notice is replicated
  11  * unmodified and in its entirety in all distributions of the software,
  12  * modified or unmodified, in source code or in binary form.
  13  *
  14  * Redistribution and use in source and binary forms, with or without
  15  * modification, are permitted provided that the following conditions are
  16  * met: redistributions of source code must retain the above copyright
  17  * notice, this list of conditions and the following disclaimer;
  18  * redistributions in binary form must reproduce the above copyright
  19  * notice, this list of conditions and the following disclaimer in the
  20  * documentation and/or other materials provided with the distribution;
  21  * neither the name of the copyright holders nor the names of its
  22  * contributors may be used to endorse or promote products derived from
  23  * this software without specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  26  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  27  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  28  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  29  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  30  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  31  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  32  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  33  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  34  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  35  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  36  *
  37  * Authors: Gabor Dozsa
  38  */
  39
  40 /* @file
  41  * MultiHeaderPkt class to encapsulate multi-gem5 header packets
  42  *
  43  */
  44
  45 #include "dev/net/multi_packet.hh"
  46
  47 #include <cstdint>
  48 #include <cstring>
  49
  50 #include "base/inet.hh"
  51
  52 unsigned
  53 MultiHeaderPkt::maxAddressLength()
  54 {
  55     return sizeof(AddressType);
  56 }
  57
  58 void
  59 MultiHeaderPkt::clearAddress(AddressType &addr)
  60 {
  61     std::memset(addr, 0, sizeof(addr));
  62 }
  63
  64 bool
  65 MultiHeaderPkt::isAddressEqual(const AddressType &addr1,
  66                                const AddressType &addr2)
  67 {
  68     return (std::memcmp(addr1, addr2, sizeof(addr1)) == 0);
  69 }
  70
  71 bool
  72 MultiHeaderPkt::isAddressLess(const AddressType &addr1,
  73                               const AddressType &addr2)
  74 {
  75     return (std::memcmp(addr1, addr2, sizeof(addr1)) < 0);
  76 }
  77
  78 void
  79 MultiHeaderPkt::copyAddress(AddressType &dest, const AddressType &src)
  80 {
  81     std::memcpy(dest, src, sizeof(dest));
  82 }
  83
  84 bool
  85 MultiHeaderPkt::isBroadcastAddress(const AddressType &addr)
  86 {
  87     return ((Net::EthAddr *)&addr)->broadcast();
  88 }
  89
  90 bool
  91 MultiHeaderPkt::isMulticastAddress(const AddressType &addr)
  92 {
  93     return ((Net::EthAddr *)&addr)->multicast();
  94 }
  95
  96 bool
  97 MultiHeaderPkt::isUnicastAddress(const AddressType &addr)
  98 {
  99     return ((Net::EthAddr *)&addr)->unicast();
 100 }