f267dc4a87
No more non-intuitive behavior shifts depending on whether
outputDirectory is set (at the expense of backwards compatibility).
outputDirectory is now always valid, defaults to ".".
dev/etherdump.cc:
Use makeOutputStream() to create output file.
New behavior: actually complain if dump file can't
be opened, instead of quietly ignoring the problem.
dev/etherdump.hh:
dev/simconsole.cc:
dev/simconsole.hh:
Use makeOutputStream() to create output file.
sim/builder.cc:
sim/builder.hh:
sim/main.cc:
builderStream() is now *configStream.
sim/serialize.cc:
outputDirectory is now always valid, no need to check.
sim/universe.cc:
Clean up/standardize handling of various output files.
No more non-intuitive behavior shifts depending on whether
outputDirectory is set (at the expense of backwards compatibility).
outputDirectory is now always valid, defaults to ".".
New function makeOutputStream() does "the right thing" to
associate a stream with a filename.
--HG--
extra : convert_revision : a03c58c547221b3906e0d6f55e4a569843f2d646
139 lines
4.3 KiB
C++
139 lines
4.3 KiB
C++
/*
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* Copyright (c) 2002-2004 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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/* @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 "dev/etherdump.hh"
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#include "sim/builder.hh"
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#include "sim/universe.hh"
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using std::string;
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EtherDump::EtherDump(const string &name, std::ostream *_stream, int max)
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: SimObject(name), stream(_stream), 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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s_freq = ticksPerSecond;
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us_freq = ticksPerSecond / ULL(1000000);
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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(PacketPtr &packet)
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{
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pcap_pkthdr pkthdr;
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pkthdr.seconds = curtime + (curTick / s_freq);
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pkthdr.microseconds = (curTick / us_freq) % 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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BEGIN_DECLARE_SIM_OBJECT_PARAMS(EtherDump)
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Param<string> file;
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Param<int> maxlen;
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END_DECLARE_SIM_OBJECT_PARAMS(EtherDump)
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BEGIN_INIT_SIM_OBJECT_PARAMS(EtherDump)
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INIT_PARAM_DFLT(file, "file to dump packets to", "etherdump"),
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INIT_PARAM_DFLT(maxlen, "max portion of packet data to dump", 96)
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END_INIT_SIM_OBJECT_PARAMS(EtherDump)
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CREATE_SIM_OBJECT(EtherDump)
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{
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return new EtherDump(getInstanceName(), makeOutputStream(file), maxlen);
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}
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REGISTER_SIM_OBJECT("EtherDump", EtherDump)
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