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/* Copyright (C) 2007-2010 Open Information Security Foundation
*
* You can copy, redistribute or modify this Program under the terms of
* the GNU General Public License version 2 as published by the Free
* Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
#include "suricata-common.h"
#include "tm-threads.h"
#include "conf.h"
#include "runmodes.h"
#include "runmode-pcap-file.h"
#include "output.h"
#include "detect-engine.h"
#include "source-pcap-file.h"
#include "util-debug.h"
#include "util-time.h"
#include "util-cpu.h"
#include "util-affinity.h"
#include "util-runmodes.h"
const char *RunModeFilePcapGetDefaultMode(void)
{
return "autofp";
}
void RunModeFilePcapRegister(void)
{
RunModeRegisterNewRunMode(RUNMODE_PCAP_FILE, "single", "Single threaded pcap file mode",
RunModeFilePcapSingle, NULL);
RunModeRegisterNewRunMode(RUNMODE_PCAP_FILE, "autofp",
"Multi-threaded pcap file mode. Packets from each flow are assigned to a consistent "
"detection thread",
RunModeFilePcapAutoFp, NULL);
return;
}
/**
* \brief Single thread version of the Pcap file processing.
*/
int RunModeFilePcapSingle(void)
{
const char *file = NULL;
char tname[TM_THREAD_NAME_MAX];
if (ConfGet("pcap-file.file", &file) == 0) {
FatalError("Failed retrieving pcap-file from Conf");
}
TimeModeSetOffline();
PcapFileGlobalInit();
snprintf(tname, sizeof(tname), "%s#01", thread_name_single);
/* create the threads */
ThreadVars *tv = TmThreadCreatePacketHandler(tname,
"packetpool", "packetpool",
"packetpool", "packetpool",
"pktacqloop");
if (tv == NULL) {
FatalError("threading setup failed");
}
TmModule *tm_module = TmModuleGetByName("ReceivePcapFile");
if (tm_module == NULL) {
FatalError("TmModuleGetByName failed for ReceivePcap");
}
TmSlotSetFuncAppend(tv, tm_module, file);
tm_module = TmModuleGetByName("DecodePcapFile");
if (tm_module == NULL) {
FatalError("TmModuleGetByName DecodePcap failed");
}
TmSlotSetFuncAppend(tv, tm_module, NULL);
tm_module = TmModuleGetByName("FlowWorker");
if (tm_module == NULL) {
FatalError("TmModuleGetByName for FlowWorker failed");
}
TmSlotSetFuncAppend(tv, tm_module, NULL);
TmThreadSetCPU(tv, WORKER_CPU_SET);
if (TmThreadSpawn(tv) != TM_ECODE_OK) {
FatalError("TmThreadSpawn failed");
}
return 0;
}
/**
* \brief RunModeFilePcapAutoFp set up the following thread packet handlers:
* - Receive thread (from pcap file)
* - Decode thread
* - Stream thread
* - Detect: If we have only 1 cpu, it will setup one Detect thread
* If we have more than one, it will setup num_cpus - 1
* starting from the second cpu available.
* - Outputs thread
* By default the threads will use the first cpu available
* except the Detection threads if we have more than one cpu.
*
* \retval 0 If all goes well. (If any problem is detected the engine will
* exit()).
*/
int RunModeFilePcapAutoFp(void)
{
SCEnter();
char tname[TM_THREAD_NAME_MAX];
char qname[TM_QUEUE_NAME_MAX];
uint16_t cpu = 0;
char *queues = NULL;
uint16_t thread;
const char *file = NULL;
if (ConfGet("pcap-file.file", &file) == 0) {
FatalError("Failed retrieving pcap-file from Conf");
}
SCLogDebug("file %s", file);
TimeModeSetOffline();
PcapFileGlobalInit();
/* Available cpus */
uint16_t ncpus = UtilCpuGetNumProcessorsOnline();
/* start with cpu 1 so that if we're creating an odd number of detect
* threads we're not creating the most on CPU0. */
if (ncpus > 0)
cpu = 1;
/* always create at least one thread */
int thread_max = TmThreadGetNbThreads(WORKER_CPU_SET);
if (thread_max == 0)
thread_max = ncpus * threading_detect_ratio;
if (thread_max < 1)
thread_max = 1;
if (thread_max > 1024)
thread_max = 1024;
queues = RunmodeAutoFpCreatePickupQueuesString(thread_max);
if (queues == NULL) {
FatalError("RunmodeAutoFpCreatePickupQueuesString failed");
}
snprintf(tname, sizeof(tname), "%s#01", thread_name_autofp);
/* create the threads */
ThreadVars *tv_receivepcap =
TmThreadCreatePacketHandler(tname,
"packetpool", "packetpool",
queues, "flow",
"pktacqloop");
SCFree(queues);
if (tv_receivepcap == NULL) {
FatalError("threading setup failed");
}
TmModule *tm_module = TmModuleGetByName("ReceivePcapFile");
if (tm_module == NULL) {
FatalError("TmModuleGetByName failed for ReceivePcap");
}
TmSlotSetFuncAppend(tv_receivepcap, tm_module, file);
tm_module = TmModuleGetByName("DecodePcapFile");
if (tm_module == NULL) {
FatalError("TmModuleGetByName DecodePcap failed");
}
TmSlotSetFuncAppend(tv_receivepcap, tm_module, NULL);
TmThreadSetCPU(tv_receivepcap, RECEIVE_CPU_SET);
if (TmThreadSpawn(tv_receivepcap) != TM_ECODE_OK) {
FatalError("TmThreadSpawn failed");
}
for (thread = 0; thread < (uint16_t)thread_max; thread++) {
snprintf(tname, sizeof(tname), "%s#%02d", thread_name_workers, thread + 1);
snprintf(qname, sizeof(qname), "pickup%d", thread + 1);
SCLogDebug("tname %s, qname %s", tname, qname);
SCLogDebug("Assigning %s affinity to cpu %u", tname, cpu);
ThreadVars *tv_detect_ncpu =
TmThreadCreatePacketHandler(tname,
qname, "flow",
"packetpool", "packetpool",
"varslot");
if (tv_detect_ncpu == NULL) {
FatalError("TmThreadsCreate failed");
}
tm_module = TmModuleGetByName("FlowWorker");
if (tm_module == NULL) {
FatalError("TmModuleGetByName for FlowWorker failed");
}
TmSlotSetFuncAppend(tv_detect_ncpu, tm_module, NULL);
TmThreadSetGroupName(tv_detect_ncpu, "Detect");
TmThreadSetCPU(tv_detect_ncpu, WORKER_CPU_SET);
if (TmThreadSpawn(tv_detect_ncpu) != TM_ECODE_OK) {
FatalError("TmThreadSpawn failed");
}
if ((cpu + 1) == ncpus)
cpu = 0;
else
cpu++;
}
return 0;
}
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