abc76f20cb
creation and initialization now happens in python. Parameter objects are generated and initialized by python. The .ini file is now solely for debugging purposes and is not used in construction of the objects in any way. --HG-- extra : convert_revision : 7e722873e417cb3d696f2e34c35ff488b7bff4ed
124 lines
3.9 KiB
C++
124 lines
3.9 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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*/
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/* @file
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* Simple object for creating a simple pcap style packet trace
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*/
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#include <sys/time.h>
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#include <algorithm>
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#include <string>
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#include "base/misc.hh"
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#include "base/output.hh"
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#include "dev/etherdump.hh"
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#include "params/EtherDump.hh"
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#include "sim/core.hh"
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using std::string;
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EtherDump::EtherDump(const string &name, const string &file, int max)
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: SimObject(name), stream(file.c_str()), maxlen(max)
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{
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}
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#define DLT_EN10MB 1 // Ethernet (10Mb)
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#define TCPDUMP_MAGIC 0xa1b2c3d4
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#define PCAP_VERSION_MAJOR 2
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#define PCAP_VERSION_MINOR 4
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struct pcap_file_header {
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uint32_t magic;
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uint16_t version_major;
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uint16_t version_minor;
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int32_t thiszone; // gmt to local correction
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uint32_t sigfigs; // accuracy of timestamps
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uint32_t snaplen; // max length saved portion of each pkt
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uint32_t linktype; // data link type (DLT_*)
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};
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struct pcap_pkthdr {
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uint32_t seconds;
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uint32_t microseconds;
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uint32_t caplen; // length of portion present
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uint32_t len; // length this packet (off wire)
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};
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void
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EtherDump::init()
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{
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curtime = time(NULL);
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struct pcap_file_header hdr;
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hdr.magic = TCPDUMP_MAGIC;
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hdr.version_major = PCAP_VERSION_MAJOR;
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hdr.version_minor = PCAP_VERSION_MINOR;
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hdr.thiszone = -5 * 3600;
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hdr.snaplen = 1500;
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hdr.sigfigs = 0;
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hdr.linktype = DLT_EN10MB;
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stream.write(reinterpret_cast<char *>(&hdr), sizeof(hdr));
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/*
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* output an empty packet with the current time so that we know
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* when the simulation began. This allows us to correlate packets
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* to sim_cycles.
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*/
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pcap_pkthdr pkthdr;
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pkthdr.seconds = curtime;
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pkthdr.microseconds = 0;
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pkthdr.caplen = 0;
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pkthdr.len = 0;
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stream.write(reinterpret_cast<char *>(&pkthdr), sizeof(pkthdr));
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stream.flush();
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}
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void
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EtherDump::dumpPacket(EthPacketPtr &packet)
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{
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pcap_pkthdr pkthdr;
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pkthdr.seconds = curtime + (curTick / Clock::Int::s);
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pkthdr.microseconds = (curTick / Clock::Int::us) % ULL(1000000);
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pkthdr.caplen = std::min(packet->length, maxlen);
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pkthdr.len = packet->length;
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stream.write(reinterpret_cast<char *>(&pkthdr), sizeof(pkthdr));
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stream.write(reinterpret_cast<char *>(packet->data), pkthdr.caplen);
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stream.flush();
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}
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EtherDump *
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EtherDumpParams::create()
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{
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return new EtherDump(name, simout.resolve(file), maxlen);
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}
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