12SN/A/* 21762SN/A * Copyright (c) 2002-2005 The Regents of The University of Michigan 32SN/A * All rights reserved. 42SN/A * 52SN/A * Redistribution and use in source and binary forms, with or without 62SN/A * modification, are permitted provided that the following conditions are 72SN/A * met: redistributions of source code must retain the above copyright 82SN/A * notice, this list of conditions and the following disclaimer; 92SN/A * redistributions in binary form must reproduce the above copyright 102SN/A * notice, this list of conditions and the following disclaimer in the 112SN/A * documentation and/or other materials provided with the distribution; 122SN/A * neither the name of the copyright holders nor the names of its 132SN/A * contributors may be used to endorse or promote products derived from 142SN/A * this software without specific prior written permission. 152SN/A * 162SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 172SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 182SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 192SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 202SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 212SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 222SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 232SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 242SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 252SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 262SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 272665SN/A * 282665SN/A * Authors: Nathan Binkert 292SN/A */ 302SN/A 312SN/A/* @file 322SN/A * Simple object for creating a simple pcap style packet trace 332SN/A */ 3411263Sandreas.sandberg@arm.com#include "dev/net/etherdump.hh" 352SN/A 362SN/A#include <sys/time.h> 372SN/A 381015SN/A#include <algorithm> 392SN/A#include <string> 402SN/A 4112334Sgabeblack@google.com#include "base/logging.hh" 421388SN/A#include "base/output.hh" 434167SN/A#include "sim/core.hh" 442SN/A 452SN/Ausing std::string; 462SN/A 475034SN/AEtherDump::EtherDump(const Params *p) 4811359Sandreas@sandberg.pp.se : SimObject(p), stream(simout.create(p->file, true)->stream()), 495034SN/A maxlen(p->maxlen) 502SN/A{ 512SN/A} 522SN/A 535543SN/A#define DLT_EN10MB 1 // Ethernet (10Mb) 545543SN/A#define TCPDUMP_MAGIC 0xa1b2c3d4 555543SN/A#define PCAP_VERSION_MAJOR 2 565543SN/A#define PCAP_VERSION_MINOR 4 572SN/A 582SN/Astruct pcap_file_header { 592SN/A uint32_t magic; 602SN/A uint16_t version_major; 612SN/A uint16_t version_minor; 625543SN/A int32_t thiszone; // gmt to local correction 635543SN/A uint32_t sigfigs; // accuracy of timestamps 645543SN/A uint32_t snaplen; // max length saved portion of each pkt 655543SN/A uint32_t linktype; // data link type (DLT_*) 662SN/A}; 672SN/A 682SN/Astruct pcap_pkthdr { 69599SN/A uint32_t seconds; 70599SN/A uint32_t microseconds; 715543SN/A uint32_t caplen; // length of portion present 725543SN/A uint32_t len; // length this packet (off wire) 732SN/A}; 742SN/A 752SN/Avoid 762SN/AEtherDump::init() 772SN/A{ 782SN/A struct pcap_file_header hdr; 792SN/A hdr.magic = TCPDUMP_MAGIC; 802SN/A hdr.version_major = PCAP_VERSION_MAJOR; 812SN/A hdr.version_minor = PCAP_VERSION_MINOR; 822SN/A 835878SN/A hdr.thiszone = 0; 842SN/A hdr.snaplen = 1500; 852SN/A hdr.sigfigs = 0; 862SN/A hdr.linktype = DLT_EN10MB; 872SN/A 885402SN/A stream->write(reinterpret_cast<char *>(&hdr), sizeof(hdr)); 892SN/A 905402SN/A stream->flush(); 912SN/A} 922SN/A 932SN/Avoid 942566SN/AEtherDump::dumpPacket(EthPacketPtr &packet) 952SN/A{ 962SN/A pcap_pkthdr pkthdr; 977823SN/A pkthdr.seconds = curTick() / SimClock::Int::s; 987823SN/A pkthdr.microseconds = (curTick() / SimClock::Int::us) % ULL(1000000); 991015SN/A pkthdr.caplen = std::min(packet->length, maxlen); 1002SN/A pkthdr.len = packet->length; 1015402SN/A stream->write(reinterpret_cast<char *>(&pkthdr), sizeof(pkthdr)); 1025402SN/A stream->write(reinterpret_cast<char *>(packet->data), pkthdr.caplen); 1035402SN/A stream->flush(); 1042SN/A} 1052SN/A 1064762SN/AEtherDump * 1074762SN/AEtherDumpParams::create() 1082SN/A{ 1095034SN/A return new EtherDump(this); 1102SN/A} 111