/*--------------------------------------------------------------- * Copyright (c) 1999,2000,2001,2002,2003 * The Board of Trustees of the University of Illinois * All Rights Reserved. *--------------------------------------------------------------- * Permission is hereby granted, free of charge, to any person * obtaining a copy of this software (Iperf) and associated * documentation files (the "Software"), to deal in the Software * without restriction, including without limitation the * rights to use, copy, modify, merge, publish, distribute, * sublicense, and/or sell copies of the Software, and to permit * persons to whom the Software is furnished to do * so, subject to the following conditions: * * * Redistributions of source code must retain the above * copyright notice, this list of conditions and * the following disclaimers. * * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimers in the documentation and/or other materials * provided with the distribution. * * * Neither the names of the University of Illinois, NCSA, * nor the names of its contributors may be used to endorse * or promote products derived from this Software without * specific prior written permission. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE CONTIBUTORS OR COPYRIGHT * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * ________________________________________________________________ * National Laboratory for Applied Network Research * National Center for Supercomputing Applications * University of Illinois at Urbana-Champaign * http://www.ncsa.uiuc.edu * ________________________________________________________________ * * Reporter.c * by Kevin Gibbs <kgibbs@nlanr.net> *
* ________________________________________________________________ */
/* The following 4 functions are provided for Reporting styles that do not have all the reporting formats. For instance the provided CSV format does not have a settings report so it uses settings_notimpl.
*/ void* connection_notimpl( Connection_Info * nused, int nuse ) { return NULL;
} void settings_notimpl( ReporterData * nused ) { } void statistics_notimpl( Transfer_Info * nused ) { } void serverstatistics_notimpl( Connection_Info *nused1, Transfer_Info *nused2 ) { }
// To add a reporting style include its header here. #include"report_default.h" #include"report_CSV.h"
// The following array of report structs contains the // pointers required for reporting in different reporting // styles. To add a reporting style add a report struct // below.
report_connection connection_reports[kReport_MAXIMUM] = {
reporter_reportpeer,
CSV_peer
};
/* * BarrierClient allows for multiple stream clients to be syncronized
*/ void BarrierClient( ReportHeader *agent ) {
Condition_Lock(agent->multireport->barrier);
agent->multireport->threads--; if ( agent->multireport->threads == 0 ) { // last one set time and wake up everyone
gettimeofday( &(agent->multireport->startTime), NULL );
Condition_Broadcast( &agent->multireport->barrier );
} else {
Condition_Wait( &agent->multireport->barrier );
}
agent->multireport->threads++;
Condition_Unlock( agent->multireport->barrier );
agent->report.startTime = agent->multireport->startTime;
agent->report.nextTime = agent->report.startTime;
TimeAdd( agent->report.nextTime, agent->report.intervalTime );
}
/* * InitReport is called by a transfer agent (client or * server) to setup the needed structures to communicate * traffic.
*/
ReportHeader* InitReport( thread_Settings *agent ) {
ReportHeader *reporthdr = NULL;
ReporterData *data = NULL; if ( isDataReport( agent ) ) { /* * Create in one big chunk
*/
reporthdr = malloc( sizeof(ReportHeader) +
NUM_REPORT_STRUCTS * sizeof(ReportStruct) ); if ( reporthdr != NULL ) { // Only need to make sure the headers are clean
memset( reporthdr, 0, sizeof(ReportHeader));
reporthdr->data = (ReportStruct*)(reporthdr+1);
reporthdr->multireport = agent->multihdr;
data = &reporthdr->report;
reporthdr->reporterindex = NUM_REPORT_STRUCTS - 1;
data->info.transferID = agent->mSock;
data->info.groupID = (agent->multihdr != NULL ? agent->multihdr->groupID
: -1);
data->type = TRANSFER_REPORT; if ( agent->mInterval != 0.0 ) { struct timeval *interval = &data->intervalTime;
interval->tv_sec = (long) agent->mInterval;
interval->tv_usec = (long) ((agent->mInterval - interval->tv_sec)
* rMillion);
}
data->mHost = agent->mHost;
data->mLocalhost = agent->mLocalhost;
data->mBufLen = agent->mBufLen;
data->mMSS = agent->mMSS;
data->mTCPWin = agent->mTCPWin;
data->flags = agent->flags;
data->mThreadMode = agent->mThreadMode;
data->mode = agent->mReportMode;
data->info.mFormat = agent->mFormat;
data->info.mTTL = agent->mTTL; if ( isUDP( agent ) ) {
reporthdr->report.info.mUDP = (char)agent->mThreadMode;
}
} else {
FAIL(1, "Out of Memory!!\n", agent);
}
} if ( isConnectionReport( agent ) ) { if ( reporthdr == NULL ) { /* * Create in one big chunk
*/
reporthdr = malloc( sizeof(ReportHeader) ); if ( reporthdr != NULL ) { // Only need to make sure the headers are clean
memset( reporthdr, 0, sizeof(ReportHeader));
data = &reporthdr->report;
data->info.transferID = agent->mSock;
data->info.groupID = -1;
} else {
FAIL(1, "Out of Memory!!\n", agent);
}
} if ( reporthdr != NULL ) {
data->type |= CONNECTION_REPORT;
data->connection.peer = agent->peer;
data->connection.size_peer = agent->size_peer;
data->connection.local = agent->local;
data->connection.size_local = agent->size_local;
} else {
FAIL(1, "Out of Memory!!\n", agent);
}
} if ( isConnectionReport( agent ) || isDataReport( agent ) ) {
#ifdef HAVE_THREAD /* * Update the ReportRoot to include this report.
*/ if ( reporthdr->report.mThreadMode == kMode_Client &&
reporthdr->multireport != NULL ) { // syncronize watches on my mark......
BarrierClient( reporthdr );
} else { if ( reporthdr->multireport != NULL && isMultipleReport( agent )) {
reporthdr->multireport->threads++; if ( reporthdr->multireport->report->startTime.tv_sec == 0 ) {
gettimeofday( &(reporthdr->multireport->report->startTime), NULL );
}
reporthdr->report.startTime = reporthdr->multireport->report->startTime;
} else { // set start time
gettimeofday( &(reporthdr->report.startTime), NULL );
}
reporthdr->report.nextTime = reporthdr->report.startTime;
TimeAdd( reporthdr->report.nextTime, reporthdr->report.intervalTime );
}
Condition_Lock( ReportCond );
reporthdr->next = ReportRoot;
ReportRoot = reporthdr;
Condition_Signal( &ReportCond );
Condition_Unlock( ReportCond ); #else // set start time
gettimeofday( &(reporthdr->report.startTime), NULL ); /* * Process the report in this thread
*/
reporthdr->next = NULL;
process_report ( reporthdr ); #endif
} if ( !isDataReport( agent ) ) {
reporthdr = NULL;
} return reporthdr;
}
/* * ReportPacket is called by a transfer agent to record * the arrival or departure of a "packet" (for TCP it * will actually represent many packets). This needs to * be as simple and fast as possible as it gets called for * every "packet".
*/ void ReportPacket( ReportHeader* agent, ReportStruct *packet ) { if ( agent != NULL ) { int index = agent->reporterindex; /* * First find the appropriate place to put the information
*/ if ( agent->agentindex == NUM_REPORT_STRUCTS ) { // Just need to make sure that reporter is not on the first // item while ( index == 0 ) {
Condition_Signal( &ReportCond );
Condition_Wait( &ReportDoneCond );
index = agent->reporterindex;
}
agent->agentindex = 0;
} // Need to make sure that reporter is not about to be "lapped" while ( index - 1 == agent->agentindex ) {
Condition_Signal( &ReportCond );
Condition_Wait( &ReportDoneCond );
index = agent->reporterindex;
}
// Put the information there
memcpy( agent->data + agent->agentindex, packet, sizeof(ReportStruct) );
// Updating agentindex MUST be the last thing done
agent->agentindex++; #ifndef HAVE_THREAD /* * Process the report in this thread
*/
process_report ( agent ); #endif
}
}
/* * CloseReport is called by a transfer agent to finalize * the report and signal transfer is over.
*/ void CloseReport( ReportHeader *agent, ReportStruct *packet ) { if ( agent != NULL) {
/* * EndReport signifies the agent no longer is interested * in the report. Calls to GetReport will no longer be * filled
*/ void EndReport( ReportHeader *agent ) { if ( agent != NULL ) { int index = agent->reporterindex; while ( index != -1 ) {
thread_rest();
index = agent->reporterindex;
}
agent->agentindex = -1; #ifndef HAVE_THREAD /* * Process the report in this thread
*/
process_report ( agent ); #endif
}
}
/* * GetReport is called by the agent after a CloseReport * but before an EndReport to get the stats generated * by the reporter thread.
*/
Transfer_Info *GetReport( ReportHeader *agent ) { int index = agent->reporterindex; while ( index != -1 ) {
thread_rest();
index = agent->reporterindex;
} return &agent->report.info;
}
/* * ReportSettings will generate a summary report for * settings being used with Listeners or Clients
*/ void ReportSettings( thread_Settings *agent ) { if ( isSettingsReport( agent ) ) { /* * Create in one big chunk
*/
ReportHeader *reporthdr = malloc( sizeof(ReportHeader) );
#ifdef HAVE_THREAD /* * Update the ReportRoot to include this report.
*/
Condition_Lock( ReportCond );
reporthdr->next = ReportRoot;
ReportRoot = reporthdr;
Condition_Signal( &ReportCond );
Condition_Unlock( ReportCond ); #else /* * Process the report in this thread
*/
reporthdr->next = NULL;
process_report ( reporthdr ); #endif
} else {
FAIL(1, "Out of Memory!!\n", agent);
}
}
}
/* * ReportServerUDP will generate a report of the UDP * statistics as reported by the server on the client * side.
*/ void ReportServerUDP( thread_Settings *agent, server_hdr *server ) { if ( (ntohl(server->flags) & HEADER_VERSION1) != 0 &&
isServerReport( agent ) ) { /* * Create in one big chunk
*/
ReportHeader *reporthdr = malloc( sizeof(ReportHeader) );
Transfer_Info *stats = &reporthdr->report.info;
#ifdef HAVE_THREAD /* * Update the ReportRoot to include this report.
*/
Condition_Lock( ReportCond );
reporthdr->next = ReportRoot;
ReportRoot = reporthdr;
Condition_Signal( &ReportCond );
Condition_Unlock( ReportCond ); #else /* * Process the report in this thread
*/
reporthdr->next = NULL;
process_report ( reporthdr ); #endif
} else {
FAIL(1, "Out of Memory!!\n", agent);
}
}
}
/* * This function is called only when the reporter thread * This function is the loop that the reporter thread processes
*/ void reporter_spawn( thread_Settings *thread ) { do { // This section allows for safe exiting with Ctrl-C
Condition_Lock ( ReportCond ); if ( ReportRoot == NULL ) { // Allow main thread to exit if Ctrl-C is received
thread_setignore();
Condition_Wait ( &ReportCond ); // Stop main thread from exiting until done with all reports
thread_unsetignore();
}
Condition_Unlock ( ReportCond );
again: if ( ReportRoot != NULL ) {
ReportHeader *temp = ReportRoot; //Condition_Unlock ( ReportCond ); if ( reporter_process_report ( temp ) ) { // This section allows for more reports to be added while // the reporter is processing reports without needing to // stop the reporter or immediately notify it
Condition_Lock ( ReportCond ); if ( temp == ReportRoot ) { // no new reports
ReportRoot = temp->next;
} else { // new reports added
ReportHeader *itr = ReportRoot; while ( itr->next != temp ) {
itr = itr->next;
}
itr->next = temp->next;
} // finished with report so free it
free( temp );
Condition_Unlock ( ReportCond );
Condition_Signal( &ReportDoneCond ); if (ReportRoot) goto again;
}
Condition_Signal( &ReportDoneCond );
usleep(10000);
} else { //Condition_Unlock ( ReportCond );
}
} while ( 1 );
}
/* * Used for single threaded reporting
*/ void process_report ( ReportHeader *report ) { if ( report != NULL ) { if ( reporter_process_report( report ) ) {
free( report );
}
}
}
/* * Process reports starting with "reporthdr"
*/ int reporter_process_report ( ReportHeader *reporthdr ) { int need_free = 0;
// Recursively process reports if ( reporthdr->next != NULL ) { if ( reporter_process_report( reporthdr->next ) ) { // If we are done with this report then free it
ReportHeader *temp = reporthdr->next;
reporthdr->next = reporthdr->next->next;
free( temp );
}
}
if ( (reporthdr->report.type & SETTINGS_REPORT) != 0 ) {
reporthdr->report.type &= ~SETTINGS_REPORT; return reporter_print( &reporthdr->report, SETTINGS_REPORT, 1 );
} elseif ( (reporthdr->report.type & CONNECTION_REPORT) != 0 ) {
reporthdr->report.type &= ~CONNECTION_REPORT;
reporter_print( &reporthdr->report, CONNECTION_REPORT,
(reporthdr->report.type == 0 ? 1 : 0) ); if ( reporthdr->multireport != NULL && isMultipleReport( (&reporthdr->report) )) { if ( (reporthdr->multireport->report->type & CONNECTION_REPORT) != 0 ) {
reporthdr->multireport->report->type &= ~CONNECTION_REPORT;
reporter_print( reporthdr->multireport->report, CONNECTION_REPORT,
(reporthdr->report.type == 0 ? 1 : 0) );
}
}
} elseif ( (reporthdr->report.type & SERVER_RELAY_REPORT) != 0 ) {
reporthdr->report.type &= ~SERVER_RELAY_REPORT; return reporter_print( &reporthdr->report, SERVER_RELAY_REPORT, 1 );
} if ( (reporthdr->report.type & TRANSFER_REPORT) != 0 ) { // If there are more packets to process then handle them if ( reporthdr->reporterindex >= 0 ) { // Need to make sure we do not pass the "agent" while ( reporthdr->reporterindex != reporthdr->agentindex - 1 ) { if ( reporthdr->reporterindex == NUM_REPORT_STRUCTS - 1 ) { if ( reporthdr->agentindex == 0 ) { break;
} else {
reporthdr->reporterindex = 0;
}
} else {
reporthdr->reporterindex++;
} if ( reporter_handle_packet( reporthdr ) ) { // No more packets to process
reporthdr->reporterindex = -1; break;
}
}
} // If the agent is done with the report then free it if ( reporthdr->agentindex == -1 ) {
need_free = 1;
}
} return need_free;
}
// packet loss occured if the datagram numbers aren't sequential if ( packet->packetID != data->PacketID + 1 ) { if ( packet->packetID < data->PacketID + 1 ) {
data->cntOutofOrder++;
} else {
data->cntError += packet->packetID - data->PacketID - 1;
}
} // never decrease datagramID (e.g. if we get an out-of-order packet) if ( packet->packetID > data->PacketID ) {
data->PacketID = packet->packetID;
}
}
}
// Print a report if appropriate return reporter_condprintstats( &reporthdr->report, reporthdr->multireport, finished );
}
/* * Handles summing of threads
*/ void reporter_handle_multiple_reports( MultiHeader *reporthdr, Transfer_Info *stats, int force ) { if ( reporthdr != NULL ) { if ( reporthdr->threads > 1 ) { int i;
Transfer_Info *current = NULL; // Search for start Time for ( i = 0; i < NUM_MULTI_SLOTS; i++ ) {
current = &reporthdr->data[i]; if ( current->startTime == stats->startTime ) { break;
}
} if ( current->startTime != stats->startTime ) { // Find first available for ( i = 0; i < NUM_MULTI_SLOTS; i++ ) {
current = &reporthdr->data[i]; if ( current->startTime < 0 ) { break;
}
}
current->cntDatagrams = stats->cntDatagrams;
current->cntError = stats->cntError;
current->cntOutofOrder = stats->cntOutofOrder;
current->TotalLen = stats->TotalLen;
current->mFormat = stats->mFormat;
current->endTime = stats->endTime;
current->jitter = stats->jitter;
current->startTime = stats->startTime;
current->free = 1;
} else {
current->cntDatagrams += stats->cntDatagrams;
current->cntError += stats->cntError;
current->cntOutofOrder += stats->cntOutofOrder;
current->TotalLen += stats->TotalLen;
current->mFormat = stats->mFormat; if ( current->endTime < stats->endTime ) {
current->endTime = stats->endTime;
} if ( current->jitter < stats->jitter ) {
current->jitter = stats->jitter;
}
current->free++; if ( current->free == reporthdr->threads ) { void *reserved = reporthdr->report->info.reserved_delay;
current->free = force;
memcpy( &reporthdr->report->info, current, sizeof(Transfer_Info) );
current->startTime = -1;
reporthdr->report->info.reserved_delay = reserved;
reporter_print( reporthdr->report, MULTIPLE_REPORT, force );
}
}
}
}
}
/* * Prints reports conditionally
*/ int reporter_condprintstats( ReporterData *stats, MultiHeader *multireport, int force ) { if ( force != 0 ) {
stats->info.cntOutofOrder = stats->cntOutofOrder; // assume most of the time out-of-order packets are not // duplicate packets, so conditionally subtract them from the lost packets.
stats->info.cntError = stats->cntError; if ( stats->info.cntError > stats->info.cntOutofOrder ) {
stats->info.cntError -= stats->info.cntOutofOrder;
}
stats->info.cntDatagrams = (isUDP(stats) ? stats->PacketID : stats->cntDatagrams);
stats->info.TotalLen = stats->TotalLen;
stats->info.startTime = 0;
stats->info.endTime = TimeDifference( stats->packetTime, stats->startTime );
stats->info.free = 1;
reporter_print( stats, TRANSFER_REPORT, force ); if ( isMultipleReport(stats) ) {
reporter_handle_multiple_reports( multireport, &stats->info, force );
}
} elsewhile ((stats->intervalTime.tv_sec != 0 ||
stats->intervalTime.tv_usec != 0) &&
TimeDifference( stats->nextTime,
stats->packetTime ) < 0 ) {
stats->info.cntOutofOrder = stats->cntOutofOrder - stats->lastOutofOrder;
stats->lastOutofOrder = stats->cntOutofOrder; // assume most of the time out-of-order packets are not // duplicate packets, so conditionally subtract them from the lost packets.
stats->info.cntError = stats->cntError - stats->lastError; if ( stats->info.cntError > stats->info.cntOutofOrder ) {
stats->info.cntError -= stats->info.cntOutofOrder;
}
stats->lastError = stats->cntError;
stats->info.cntDatagrams = (isUDP( stats ) ? stats->PacketID - stats->lastDatagrams :
stats->cntDatagrams - stats->lastDatagrams);
stats->lastDatagrams = (isUDP( stats ) ? stats->PacketID : stats->cntDatagrams);
stats->info.TotalLen = stats->TotalLen - stats->lastTotal;
stats->lastTotal = stats->TotalLen;
stats->info.startTime = stats->info.endTime;
stats->info.endTime = TimeDifference( stats->nextTime, stats->startTime );
TimeAdd( stats->nextTime, stats->intervalTime );
stats->info.free = 0;
reporter_print( stats, TRANSFER_REPORT, force ); if ( isMultipleReport(stats) ) {
reporter_handle_multiple_reports( multireport, &stats->info, force );
}
} return force;
}
/* * This function handles multiple format printing by sending to the * appropriate dispatch function
*/ int reporter_print( ReporterData *stats, int type, int end ) { switch ( type ) { case TRANSFER_REPORT:
statistics_reports[stats->mode]( &stats->info ); if ( end != 0 && isPrintMSS( stats ) && !isUDP( stats ) ) {
PrintMSS( stats );
} break; case SERVER_RELAY_REPORT:
serverstatistics_reports[stats->mode]( &stats->connection, &stats->info ); break; case SETTINGS_REPORT:
settings_reports[stats->mode]( stats ); break; case CONNECTION_REPORT:
stats->info.reserved_delay = connection_reports[stats->mode](
&stats->connection,
stats->info.transferID ); break; case MULTIPLE_REPORT:
multiple_reports[stats->mode]( &stats->info ); break; default:
fprintf( stderr, "Printing type not implemented! No Output\n" );
}
fflush( stdout ); return end;
}
/* ------------------------------------------------------------------- * Report the MSS and MTU, given the MSS (or a guess thereof)
* ------------------------------------------------------------------- */
// compare the MSS against the (MTU - 40) to (MTU - 80) bytes. // 40 byte IP header and somewhat arbitrarily, 40 more bytes of IP options.
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