lttv/lttv/sync/event_processing_lttng_standard.c

   1 /* This file is part of the Linux Trace Toolkit viewer
   2  * Copyright (C) 2009, 2010 Benjamin Poirier <benjamin.poirier@polymtl.ca>
   3  *
   4  * This program is free software: you can redistribute it and/or modify it
   5  * under the terms of the GNU Lesser General Public License as published by
   6  * the Free Software Foundation, either version 2.1 of the License, or (at
   7  * your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
  12  * License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #ifdef HAVE_CONFIG_H
  19 #include <config.h>
  20 #endif
  21
  22 #include <netinet/in.h>
  23 #include <stdarg.h>
  24 #include <stdint.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27
  28 #include "sync_chain.h"
  29 #include "event_processing_lttng_common.h"
  30
  31 #include "event_processing_lttng_standard.h"
  32
  33 /* IPv4 Ethertype, taken from <linux/if_ether.h>, unlikely to change as it's
  34  * defined by IANA: http://www.iana.org/assignments/ethernet-numbers
  35  */
  36 #define ETH_P_IP    0x0800
  37
  38
  39 // Functions common to all processing modules
  40 static void initProcessingLTTVStandard(SyncState* const syncState, ...);
  41 static void destroyProcessingLTTVStandard(SyncState* const syncState);
  42
  43 static AllFactors* finalizeProcessingLTTVStandard(SyncState* const syncState);
  44 static void printProcessingStatsLTTVStandard(SyncState* const syncState);
  45 static void writeProcessingGraphVariablesLTTVStandard(SyncState* const
  46         syncState, const unsigned int i);
  47 static void writeProcessingTraceTraceOptionsLTTVStandard(SyncState* const
  48         syncState, const unsigned int i, const unsigned int j);
  49 static void writeProcessingTraceTimeOptionsLTTVStandard(SyncState* const
  50         syncState, const unsigned int i, const unsigned int j);
  51
  52 // Functions specific to this module
  53 static gboolean processEventLTTVStandard(void* hookData, void* callData);
  54 static void partialDestroyProcessingLTTVStandard(SyncState* const syncState);
  55
  56
  57 static ProcessingModule processingModuleLTTVStandard = {
  58         .name= "LTTV-standard",
  59         .initProcessing= &initProcessingLTTVStandard,
  60         .destroyProcessing= &destroyProcessingLTTVStandard,
  61         .finalizeProcessing= &finalizeProcessingLTTVStandard,
  62         .printProcessingStats= &printProcessingStatsLTTVStandard,
  63         .graphFunctions= {
  64                 .writeVariables= &writeProcessingGraphVariablesLTTVStandard,
  65                 .writeTraceTraceOptions= &writeProcessingTraceTraceOptionsLTTVStandard,
  66                 .writeTraceTimeOptions= &writeProcessingTraceTimeOptionsLTTVStandard,
  67         },
  68 };
  69
  70
  71 /*
  72  * Processing Module registering function
  73  */
  74 void registerProcessingLTTVStandard()
  75 {
  76         g_queue_push_tail(&processingModules, &processingModuleLTTVStandard);
  77
  78         createQuarks();
  79 }
  80
  81
  82 /*
  83  * Allocate and initialize data structures for synchronizing a traceset.
  84  * Register event hooks.
  85  *
  86  * Args:
  87  *   syncState:    container for synchronization data.
  88  *                 This function allocates these processingData members:
  89  *                 traceNumTable
  90  *                 pendingRecv
  91  *                 hookListList
  92  *                 stats
  93  *   traceSetContext: LttvTracesetContext*, set of LTTV traces
  94  */
  95 static void initProcessingLTTVStandard(SyncState* const syncState, ...)
  96 {
  97         unsigned int i;
  98         ProcessingDataLTTVStandard* processingData;
  99         va_list ap;
 100
 101         processingData= malloc(sizeof(ProcessingDataLTTVStandard));
 102         syncState->processingData= processingData;
 103         va_start(ap, syncState);
 104         processingData->traceSetContext= va_arg(ap, LttvTracesetContext*);
 105         va_end(ap);
 106         syncState->traceNb=
 107                 lttv_traceset_number(processingData->traceSetContext->ts);
 108         processingData->hookListList= g_array_sized_new(FALSE, FALSE,
 109                 sizeof(GArray*), syncState->traceNb);
 110
 111         processingData->traceNumTable= g_hash_table_new(&g_direct_hash, NULL);
 112         for(i= 0; i < syncState->traceNb; i++)
 113         {
 114                 g_hash_table_insert(processingData->traceNumTable,
 115                         processingData->traceSetContext->traces[i]->t,
 116                         GUINT_TO_POINTER(i));
 117         }
 118
 119         processingData->pendingRecv= malloc(sizeof(GHashTable*) *
 120                 syncState->traceNb);
 121         for(i= 0; i < syncState->traceNb; i++)
 122         {
 123                 processingData->pendingRecv[i]= g_hash_table_new_full(&g_direct_hash,
 124                         NULL, NULL, &gdnDestroyEvent);
 125         }
 126
 127         if (syncState->stats)
 128         {
 129                 processingData->stats= calloc(1, sizeof(ProcessingStatsLTTVStandard));
 130         }
 131         else
 132         {
 133                 processingData->stats= NULL;
 134         }
 135
 136         if (syncState->graphsStream)
 137         {
 138                 processingData->graphs= malloc(syncState->traceNb *
 139                         sizeof(ProcessingGraphsLTTVStandard));
 140
 141                 for(i= 0; i < syncState->traceNb; i++)
 142                 {
 143                         LttTrace* traceI= processingData->traceSetContext->traces[i]->t;
 144
 145                         processingData->graphs[i].startFreq= traceI->start_freq;
 146                         processingData->graphs[i].freqScale= traceI->freq_scale;
 147                 }
 148         }
 149         else
 150         {
 151                 processingData->graphs= NULL;
 152         }
 153
 154         registerHooks(processingData->hookListList,
 155                 processingData->traceSetContext, &processEventLTTVStandard, syncState,
 156                 syncState->matchingModule->canMatch);
 157 }
 158
 159
 160 /*
 161  * Call the partial processing destroyer, obtain and the factors from
 162  * downstream
 163  *
 164  * Args:
 165  *   syncState     container for synchronization data.
 166  *
 167  * Returns:
 168  *   AllFactors    synchronization factors for each trace pair
 169  */
 170 static AllFactors* finalizeProcessingLTTVStandard(SyncState* const syncState)
 171 {
 172         partialDestroyProcessingLTTVStandard(syncState);
 173
 174         return syncState->matchingModule->finalizeMatching(syncState);
 175 }
 176
 177
 178 /*
 179  * Print statistics related to processing. Must be called after
 180  * finalizeProcessing.
 181  *
 182  * Args:
 183  *   syncState     container for synchronization data.
 184  */
 185 static void printProcessingStatsLTTVStandard(SyncState* const syncState)
 186 {
 187         ProcessingDataLTTVStandard* processingData;
 188
 189         if (!syncState->stats)
 190         {
 191                 return;
 192         }
 193
 194         processingData= (ProcessingDataLTTVStandard*) syncState->processingData;
 195
 196         printf("LTTV processing stats:\n");
 197         printf("\treceived frames: %d\n", processingData->stats->totRecv);
 198         printf("\treceived frames that are IP: %d\n",
 199                 processingData->stats->totRecvIp);
 200         if (syncState->matchingModule->canMatch[TCP])
 201         {
 202                 printf("\treceived and processed packets that are TCP: %d\n",
 203                         processingData->stats->totRecvTCP);
 204         }
 205         if (syncState->matchingModule->canMatch[UDP])
 206         {
 207                 printf("\treceived and processed packets that are UDP: %d\n",
 208                         processingData->stats->totRecvUDP);
 209         }
 210         if (syncState->matchingModule->canMatch[TCP])
 211         {
 212                 printf("\tsent packets that are TCP: %d\n",
 213                         processingData->stats->totOutE);
 214         }
 215 }
 216
 217
 218 /*
 219  * Unregister event hooks. Deallocate processingData.
 220  *
 221  * Args:
 222  *   syncState:    container for synchronization data.
 223  *                 This function deallocates these processingData members:
 224  *                 stats
 225  */
 226 static void destroyProcessingLTTVStandard(SyncState* const syncState)
 227 {
 228         ProcessingDataLTTVStandard* processingData;
 229
 230         processingData= (ProcessingDataLTTVStandard*) syncState->processingData;
 231
 232         if (processingData == NULL)
 233         {
 234                 return;
 235         }
 236
 237         partialDestroyProcessingLTTVStandard(syncState);
 238
 239         if (syncState->stats)
 240         {
 241                 free(processingData->stats);
 242         }
 243
 244         if (syncState->graphsStream)
 245         {
 246                 free(processingData->graphs);
 247         }
 248
 249         free(syncState->processingData);
 250         syncState->processingData= NULL;
 251 }
 252
 253
 254 /*
 255  * Unregister event hooks. Deallocate some of processingData.
 256  *
 257  * This function can be called right after the events have been processed to
 258  * free some data structures that are not needed for finalization.
 259  *
 260  * Args:
 261  *   syncState:    container for synchronization data.
 262  *                 This function deallocates these members:
 263  *                 traceNumTable
 264  *                 hookListList
 265  *                 pendingRecv
 266  */
 267 static void partialDestroyProcessingLTTVStandard(SyncState* const syncState)
 268 {
 269         unsigned int i;
 270         ProcessingDataLTTVStandard* processingData;
 271
 272         processingData= (ProcessingDataLTTVStandard*) syncState->processingData;
 273
 274         if (processingData == NULL || processingData->traceNumTable == NULL)
 275         {
 276                 return;
 277         }
 278
 279         g_hash_table_destroy(processingData->traceNumTable);
 280         processingData->traceNumTable= NULL;
 281
 282         for(i= 0; i < syncState->traceNb; i++)
 283         {
 284
 285                 g_debug("Cleaning up pendingRecv list");
 286                 g_hash_table_destroy(processingData->pendingRecv[i]);
 287         }
 288         free(processingData->pendingRecv);
 289
 290         unregisterHooks(processingData->hookListList,
 291                 processingData->traceSetContext);
 292 }
 293
 294
 295 /*
 296  * Lttv hook function that will be called for network events
 297  *
 298  * Args:
 299  *   hookData:     LttvTraceHook* for the type of event that generated the call
 300  *   callData:     LttvTracefileContext* at the moment of the event
 301  *
 302  * Returns:
 303  *   FALSE         Always returns FALSE, meaning to keep processing hooks for
 304  *                 this event
 305  */
 306 static gboolean processEventLTTVStandard(void* hookData, void* callData)
 307 {
 308         LttvTraceHook* traceHook;
 309         LttvTracefileContext* tfc;
 310         LttEvent* event;
 311         LttCycleCount tsc;
 312         LttTime time;
 313         WallTime wTime;
 314         LttTrace* trace;
 315         unsigned long traceNum;
 316         struct marker_info* info;
 317         SyncState* syncState;
 318         ProcessingDataLTTVStandard* processingData;
 319         gpointer traceNumP;
 320
 321         traceHook= (LttvTraceHook*) hookData;
 322         tfc= (LttvTracefileContext*) callData;
 323         trace= tfc->t_context->t;
 324         syncState= (SyncState*) traceHook->hook_data;
 325         processingData= (ProcessingDataLTTVStandard*) syncState->processingData;
 326         event= ltt_tracefile_get_event(tfc->tf);
 327         info= marker_get_info_from_id(tfc->tf->mdata, event->event_id);
 328         tsc= ltt_event_cycle_count(event);
 329         time= ltt_event_time(event);
 330         wTime.seconds= time.tv_sec;
 331         wTime.nanosec= time.tv_nsec;
 332
 333         g_assert(g_hash_table_lookup_extended(processingData->traceNumTable,
 334                         trace, NULL, &traceNumP));
 335         traceNum= GPOINTER_TO_INT(traceNumP);
 336
 337         g_debug("Process event: time: %ld.%09ld trace: %ld (%p) name: %s ",
 338                 time.tv_sec, time.tv_nsec, traceNum, trace,
 339                 g_quark_to_string(info->name));
 340
 341         if (info->name == LTT_EVENT_DEV_XMIT_EXTENDED)
 342         {
 343                 Event* outE;
 344
 345                 if (!ltt_event_get_unsigned(event,
 346                                 lttv_trace_get_hook_field(traceHook, 1)) == ETH_P_IP ||
 347                         !ltt_event_get_unsigned(event,
 348                                 lttv_trace_get_hook_field(traceHook, 2)) == IPPROTO_TCP)
 349                 {
 350                         return FALSE;
 351                 }
 352
 353                 if (!syncState->matchingModule->canMatch[TCP])
 354                 {
 355                         return FALSE;
 356                 }
 357
 358                 if (syncState->stats)
 359                 {
 360                         processingData->stats->totOutE++;
 361                 }
 362
 363                 outE= malloc(sizeof(Event));
 364                 outE->traceNum= traceNum;
 365                 outE->cpuTime= tsc;
 366                 outE->wallTime= wTime;
 367                 outE->type= TCP;
 368                 outE->copy= &copyTCPEvent;
 369                 outE->destroy= &destroyTCPEvent;
 370                 outE->event.tcpEvent= malloc(sizeof(TCPEvent));
 371                 outE->event.tcpEvent->direction= OUT;
 372                 outE->event.tcpEvent->segmentKey= malloc(sizeof(SegmentKey));
 373                 outE->event.tcpEvent->segmentKey->connectionKey.saddr=
 374                         htonl(ltt_event_get_unsigned(event,
 375                                         lttv_trace_get_hook_field(traceHook, 3)));
 376                 outE->event.tcpEvent->segmentKey->connectionKey.daddr=
 377                         htonl(ltt_event_get_unsigned(event,
 378                                         lttv_trace_get_hook_field(traceHook, 4)));
 379                 outE->event.tcpEvent->segmentKey->tot_len=
 380                         ltt_event_get_unsigned(event, lttv_trace_get_hook_field(traceHook,
 381                                         5));
 382                 outE->event.tcpEvent->segmentKey->ihl= ltt_event_get_unsigned(event,
 383                         lttv_trace_get_hook_field(traceHook, 6));
 384                 outE->event.tcpEvent->segmentKey->connectionKey.source=
 385                         ltt_event_get_unsigned(event, lttv_trace_get_hook_field(traceHook,
 386                                         7));
 387                 outE->event.tcpEvent->segmentKey->connectionKey.dest=
 388                         ltt_event_get_unsigned(event, lttv_trace_get_hook_field(traceHook,
 389                                         8));
 390                 outE->event.tcpEvent->segmentKey->seq= ltt_event_get_unsigned(event,
 391                         lttv_trace_get_hook_field(traceHook, 9));
 392                 outE->event.tcpEvent->segmentKey->ack_seq=
 393                         ltt_event_get_unsigned(event, lttv_trace_get_hook_field(traceHook,
 394                                         10));
 395                 outE->event.tcpEvent->segmentKey->doff= ltt_event_get_unsigned(event,
 396                         lttv_trace_get_hook_field(traceHook, 11));
 397                 outE->event.tcpEvent->segmentKey->ack= ltt_event_get_unsigned(event,
 398                         lttv_trace_get_hook_field(traceHook, 12));
 399                 outE->event.tcpEvent->segmentKey->rst= ltt_event_get_unsigned(event,
 400                         lttv_trace_get_hook_field(traceHook, 13));
 401                 outE->event.tcpEvent->segmentKey->syn= ltt_event_get_unsigned(event,
 402                         lttv_trace_get_hook_field(traceHook, 14));
 403                 outE->event.tcpEvent->segmentKey->fin= ltt_event_get_unsigned(event,
 404                         lttv_trace_get_hook_field(traceHook, 15));
 405
 406                 syncState->matchingModule->matchEvent(syncState, outE);
 407
 408                 g_debug("Output event done");
 409         }
 410         else if (info->name == LTT_EVENT_DEV_RECEIVE)
 411         {
 412                 guint32 protocol;
 413
 414                 if (syncState->stats)
 415                 {
 416                         processingData->stats->totRecv++;
 417                 }
 418
 419                 protocol= ltt_event_get_unsigned(event,
 420                         lttv_trace_get_hook_field(traceHook, 1));
 421
 422                 if (protocol == ETH_P_IP)
 423                 {
 424                         Event* inE;
 425                         void* skb;
 426
 427                         if (syncState->stats)
 428                         {
 429                                 processingData->stats->totRecvIp++;
 430                         }
 431
 432                         inE= malloc(sizeof(Event));
 433                         inE->traceNum= traceNum;
 434                         inE->cpuTime= tsc;
 435                         inE->wallTime= wTime;
 436                         inE->event.tcpEvent= NULL;
 437                         inE->copy= &copyEvent;
 438                         inE->destroy= &destroyEvent;
 439
 440                         skb= (void*) (long) ltt_event_get_long_unsigned(event,
 441                                 lttv_trace_get_hook_field(traceHook, 0));
 442                         g_hash_table_replace(processingData->pendingRecv[traceNum], skb,
 443                                 inE);
 444
 445                         g_debug("Adding inE %p for skb %p to pendingRecv", inE, skb);
 446                 }
 447         }
 448         else if (info->name == LTT_EVENT_TCPV4_RCV_EXTENDED)
 449         {
 450                 Event* inE;
 451                 void* skb;
 452
 453                 // Search pendingRecv for an event with the same skb
 454                 skb= (void*) (long) ltt_event_get_long_unsigned(event,
 455                         lttv_trace_get_hook_field(traceHook, 0));
 456
 457                 inE= (Event*)
 458                         g_hash_table_lookup(processingData->pendingRecv[traceNum], skb);
 459                 if (inE == NULL)
 460                 {
 461                         // This should only happen in case of lost events
 462                         g_warning("No matching pending receive event found");
 463                 }
 464                 else
 465                 {
 466                         if (syncState->stats)
 467                         {
 468                                 processingData->stats->totRecvTCP++;
 469                         }
 470
 471                         // If it's there, remove it and proceed with a receive event
 472                         g_hash_table_steal(processingData->pendingRecv[traceNum], skb);
 473
 474                         inE->type= TCP;
 475                         inE->event.tcpEvent= malloc(sizeof(TCPEvent));
 476                         inE->copy= &copyTCPEvent;
 477                         inE->destroy= &destroyTCPEvent;
 478                         inE->event.tcpEvent->direction= IN;
 479                         inE->event.tcpEvent->segmentKey= malloc(sizeof(SegmentKey));
 480                         inE->event.tcpEvent->segmentKey->connectionKey.saddr=
 481                                 htonl(ltt_event_get_unsigned(event,
 482                                                 lttv_trace_get_hook_field(traceHook, 1)));
 483                         inE->event.tcpEvent->segmentKey->connectionKey.daddr=
 484                                 htonl(ltt_event_get_unsigned(event,
 485                                                 lttv_trace_get_hook_field(traceHook, 2)));
 486                         inE->event.tcpEvent->segmentKey->tot_len=
 487                                 ltt_event_get_unsigned(event,
 488                                         lttv_trace_get_hook_field(traceHook, 3));
 489                         inE->event.tcpEvent->segmentKey->ihl=
 490                                 ltt_event_get_unsigned(event,
 491                                         lttv_trace_get_hook_field(traceHook, 4));
 492                         inE->event.tcpEvent->segmentKey->connectionKey.source=
 493                                 ltt_event_get_unsigned(event,
 494                                         lttv_trace_get_hook_field(traceHook, 5));
 495                         inE->event.tcpEvent->segmentKey->connectionKey.dest=
 496                                 ltt_event_get_unsigned(event,
 497                                         lttv_trace_get_hook_field(traceHook, 6));
 498                         inE->event.tcpEvent->segmentKey->seq=
 499                                 ltt_event_get_unsigned(event,
 500                                         lttv_trace_get_hook_field(traceHook, 7));
 501                         inE->event.tcpEvent->segmentKey->ack_seq=
 502                                 ltt_event_get_unsigned(event,
 503                                         lttv_trace_get_hook_field(traceHook, 8));
 504                         inE->event.tcpEvent->segmentKey->doff=
 505                                 ltt_event_get_unsigned(event,
 506                                         lttv_trace_get_hook_field(traceHook, 9));
 507                         inE->event.tcpEvent->segmentKey->ack=
 508                                 ltt_event_get_unsigned(event,
 509                                         lttv_trace_get_hook_field(traceHook, 10));
 510                         inE->event.tcpEvent->segmentKey->rst=
 511                                 ltt_event_get_unsigned(event,
 512                                         lttv_trace_get_hook_field(traceHook, 11));
 513                         inE->event.tcpEvent->segmentKey->syn=
 514                                 ltt_event_get_unsigned(event,
 515                                         lttv_trace_get_hook_field(traceHook, 12));
 516                         inE->event.tcpEvent->segmentKey->fin=
 517                                 ltt_event_get_unsigned(event,
 518                                         lttv_trace_get_hook_field(traceHook, 13));
 519
 520                         syncState->matchingModule->matchEvent(syncState, inE);
 521
 522                         g_debug("TCP input event %p for skb %p done", inE, skb);
 523                 }
 524         }
 525         else if (info->name == LTT_EVENT_UDPV4_RCV_EXTENDED)
 526         {
 527                 Event* inE;
 528                 void* skb;
 529
 530                 // Search pendingRecv for an event with the same skb
 531                 skb= (void*) (long) ltt_event_get_long_unsigned(event,
 532                         lttv_trace_get_hook_field(traceHook, 0));
 533
 534                 inE= (Event*)
 535                         g_hash_table_lookup(processingData->pendingRecv[traceNum], skb);
 536                 if (inE == NULL)
 537                 {
 538                         // This should only happen in case of lost events
 539                         g_warning("No matching pending receive event found");
 540                 }
 541                 else
 542                 {
 543                         guint64 dataStart;
 544
 545                         if (syncState->stats)
 546                         {
 547                                 processingData->stats->totRecvUDP++;
 548                         }
 549
 550                         // If it's there, remove it and proceed with a receive event
 551                         g_hash_table_steal(processingData->pendingRecv[traceNum], skb);
 552
 553                         inE->type= UDP;
 554                         inE->event.udpEvent= malloc(sizeof(UDPEvent));
 555                         inE->copy= &copyUDPEvent;
 556                         inE->destroy= &destroyUDPEvent;
 557                         inE->event.udpEvent->direction= IN;
 558                         inE->event.udpEvent->datagramKey= malloc(sizeof(DatagramKey));
 559                         inE->event.udpEvent->datagramKey->saddr=
 560                                 htonl(ltt_event_get_unsigned(event,
 561                                         lttv_trace_get_hook_field(traceHook, 1)));
 562                         inE->event.udpEvent->datagramKey->daddr=
 563                                 htonl(ltt_event_get_unsigned(event,
 564                                         lttv_trace_get_hook_field(traceHook, 2)));
 565                         inE->event.udpEvent->unicast= ltt_event_get_unsigned(event,
 566                                 lttv_trace_get_hook_field(traceHook, 3)) == 0 ? false : true;
 567                         inE->event.udpEvent->datagramKey->ulen=
 568                                 ltt_event_get_unsigned(event,
 569                                         lttv_trace_get_hook_field(traceHook, 4));
 570                         inE->event.udpEvent->datagramKey->source=
 571                                 ltt_event_get_unsigned(event,
 572                                         lttv_trace_get_hook_field(traceHook, 5));
 573                         inE->event.udpEvent->datagramKey->dest=
 574                                 ltt_event_get_unsigned(event,
 575                                         lttv_trace_get_hook_field(traceHook, 6));
 576                         dataStart= ltt_event_get_long_unsigned(event,
 577                                 lttv_trace_get_hook_field(traceHook, 7));
 578                         g_assert_cmpuint(sizeof(inE->event.udpEvent->datagramKey->dataKey),
 579                                 ==, sizeof(guint64));
 580                         if (inE->event.udpEvent->datagramKey->ulen - 8 >=
 581                                 sizeof(inE->event.udpEvent->datagramKey->dataKey))
 582                         {
 583                                 memcpy(inE->event.udpEvent->datagramKey->dataKey, &dataStart,
 584                                         sizeof(inE->event.udpEvent->datagramKey->dataKey));
 585                         }
 586                         else
 587                         {
 588                                 memset(inE->event.udpEvent->datagramKey->dataKey, 0,
 589                                         sizeof(inE->event.udpEvent->datagramKey->dataKey));
 590                                 memcpy(inE->event.udpEvent->datagramKey->dataKey, &dataStart,
 591                                                 inE->event.udpEvent->datagramKey->ulen - 8);
 592                         }
 593
 594                         syncState->matchingModule->matchEvent(syncState, inE);
 595
 596                         g_debug("UDP input event %p for skb %p done", inE, skb);
 597                 }
 598         }
 599         else
 600         {
 601                 g_assert_not_reached();
 602         }
 603
 604         return FALSE;
 605 }
 606
 607
 608 /*
 609  * Write the processing-specific variables in the gnuplot script.
 610  *
 611  * Args:
 612  *   syncState:    container for synchronization data
 613  *   i:            trace number
 614  */
 615 static void writeProcessingGraphVariablesLTTVStandard(SyncState* const
 616         syncState, const unsigned int i)
 617 {
 618         ProcessingDataLTTVStandard* processingData= syncState->processingData;
 619         ProcessingGraphsLTTVStandard* traceI= &processingData->graphs[i];
 620
 621         fprintf(syncState->graphsStream, "clock_freq_%u= %.3f\n", i, (double)
 622                 traceI->startFreq / traceI->freqScale);
 623 }
 624
 625
 626 /*
 627  * Write the processing-specific options in the gnuplot script.
 628  *
 629  * Args:
 630  *   syncState:    container for synchronization data
 631  *   i:            first trace number
 632  *   j:            second trace number, garanteed to be larger than i
 633  */
 634 static void writeProcessingTraceTraceOptionsLTTVStandard(SyncState* const
 635         syncState, const unsigned int i, const unsigned int j)
 636 {
 637         fprintf(syncState->graphsStream,
 638         "set key inside right bottom\n"
 639         "set xlabel \"Clock %1$u\"\n"
 640         "set xtics nomirror\n"
 641         "set ylabel \"Clock %2$u\"\n"
 642         "set ytics nomirror\n"
 643                 "set x2label \"Clock %1$d (s)\"\n"
 644                 "set x2range [GPVAL_X_MIN / clock_freq_%1$u : GPVAL_X_MAX / clock_freq_%1$u]\n"
 645                 "set x2tics\n"
 646                 "set y2label \"Clock %2$d (s)\"\n"
 647                 "set y2range [GPVAL_Y_MIN / clock_freq_%2$u : GPVAL_Y_MAX / clock_freq_%2$u]\n"
 648                 "set y2tics\n", i, j);
 649 }
 650
 651
 652 /*
 653  * Write the processing-specific options in the gnuplot script.
 654  *
 655  * Args:
 656  *   syncState:    container for synchronization data
 657  *   i:            first trace number
 658  *   j:            second trace number, garanteed to be larger than i
 659  */
 660 static void writeProcessingTraceTimeOptionsLTTVStandard(SyncState* const
 661         syncState, const unsigned int i, const unsigned int j)
 662 {
 663         fprintf(syncState->graphsStream,
 664         "set key inside right bottom\n"
 665         "set xlabel \"Clock %1$u\"\n"
 666         "set xtics nomirror\n"
 667         "set ylabel \"time (s)\"\n"
 668         "set ytics nomirror\n"
 669                 "set x2label \"Clock %1$d (s)\"\n"
 670                 "set x2range [GPVAL_X_MIN / clock_freq_%1$u : GPVAL_X_MAX / clock_freq_%1$u]\n"
 671                 "set x2tics\n", i);
 672 }