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/* Copyright (C) 2012 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.
*/
/**
* \file
*
* \author nPulse Technologies, LLC.
* \author Matt Keeler <mk@npulsetech.com>
*/
#include "suricata-common.h"
#include "tm-threads.h"
#include "conf.h"
#include "runmodes.h"
#include "output.h"
#include "util-debug.h"
#include "util-time.h"
#include "util-cpu.h"
#include "util-affinity.h"
#include "util-runmodes.h"
#include "util-device.h"
#include "runmode-napatech.h"
// need NapatechStreamDevConf structure
#include "source-napatech.h"
#define NT_RUNMODE_AUTOFP 1
#define NT_RUNMODE_WORKERS 2
static const char *default_mode = NULL;
#ifdef HAVE_NAPATECH
static int num_configured_streams = 0;
#endif
const char *RunModeNapatechGetDefaultMode(void)
{
return default_mode;
}
void RunModeNapatechRegister(void)
{
#ifdef HAVE_NAPATECH
default_mode = "autofp";
RunModeRegisterNewRunMode(RUNMODE_NAPATECH, "autofp",
"Multi threaded Napatech mode. Packets from "
"each flow are assigned to a single detect "
"thread instead of any detect thread",
RunModeNapatechAutoFp);
RunModeRegisterNewRunMode(RUNMODE_NAPATECH, "workers",
"Workers Napatech mode, each thread does all"
" tasks from acquisition to logging",
RunModeNapatechWorkers);
return;
#endif
}
#ifdef HAVE_NAPATECH
int NapatechRegisterDeviceStreams()
{
NtInfoStream_t info_stream;
NtInfo_t info;
char error_buf[100];
int status;
int i;
char live_dev_buf[9];
int use_all_streams;
ConfNode *ntstreams;
ConfNode *stream_id;
if (ConfGetBool("napatech.use-all-streams", &use_all_streams) == 0)
{
SCLogError(SC_ERR_RUNMODE, "Failed retrieving napatech.use-all-streams from Conf");
exit(EXIT_FAILURE);
}
if (use_all_streams)
{
SCLogInfo("Using All Napatech Streams");
// When using the default streams we need to query the service for a list of all configured
if ((status = NT_InfoOpen(&info_stream, "SuricataStreamInfo")) != NT_SUCCESS)
{
NT_ExplainError(status, error_buf, sizeof(error_buf) -1);
SCLogError(SC_ERR_NAPATECH_STREAMS_REGISTER_FAILED, "NT_InfoOpen failed: %s", error_buf);
return -1;
}
info.cmd = NT_INFO_CMD_READ_STREAM;
if ((status = NT_InfoRead(info_stream, &info)) != NT_SUCCESS)
{
NT_ExplainError(status, error_buf, sizeof(error_buf) -1);
SCLogError(SC_ERR_NAPATECH_STREAMS_REGISTER_FAILED, "NT_InfoRead failed: %s", error_buf);
return -1;
}
num_configured_streams = info.u.stream.data.count;
for (i = 0; i < num_configured_streams; i++)
{
// The Stream IDs do not have to be sequential
snprintf(live_dev_buf, sizeof(live_dev_buf), "nt%d", info.u.stream.data.streamIDList[i]);
LiveRegisterDevice(live_dev_buf);
}
if ((status = NT_InfoClose(info_stream)) != NT_SUCCESS)
{
NT_ExplainError(status, error_buf, sizeof(error_buf) -1);
SCLogError(SC_ERR_NAPATECH_STREAMS_REGISTER_FAILED, "NT_InfoClose failed: %s", error_buf);
return -1;
}
}
else
{
SCLogInfo("Using Selected Napatech Streams");
// When not using the default streams we need to parse the array of streams from the conf
if ((ntstreams = ConfGetNode("napatech.streams")) == NULL)
{
SCLogError(SC_ERR_RUNMODE, "Failed retrieving napatech.streams from Conf");
exit(EXIT_FAILURE);
}
// Loop through all stream numbers in the array and register the devices
TAILQ_FOREACH(stream_id, &ntstreams->head, next)
{
if (stream_id == NULL)
{
SCLogError(SC_ERR_NAPATECH_STREAMS_REGISTER_FAILED, "Couldn't Parse Stream Configuration");
exit(EXIT_FAILURE);
}
num_configured_streams++;
snprintf(live_dev_buf, sizeof(live_dev_buf), "nt%d", atoi(stream_id->val));
LiveRegisterDevice(live_dev_buf);
}
}
return 0;
}
void *NapatechConfigParser(const char *device)
{
// Expect device to be of the form nt%d where %d is the stream id to use
int dev_len = strlen(device);
struct NapatechStreamDevConf *conf = SCMalloc(sizeof(struct NapatechStreamDevConf));
if (unlikely(conf == NULL))
return NULL;
if (dev_len < 3 || dev_len > 5)
{
SCLogError(SC_ERR_NAPATECH_PARSE_CONFIG, "Could not parse config for device: %s - invalid length", device);
return NULL;
}
// device+5 is a pointer to the beginning of the stream id after the constant nt portion
conf->stream_id = atoi(device+2);
// Set the host buffer allowance for this stream
// Right now we just look at the global default - there is no per-stream hba configuration
if (ConfGetInt("napatech.hba", &conf->hba) == 0)
conf->hba = -1;
return (void *) conf;
}
int NapatechGetThreadsCount(void *conf __attribute__((unused))) {
// No matter which live device it is there is no reason to ever use more than 1 thread
// 2 or more thread would cause packet duplication
return 1;
}
static int NapatechInit(int runmode)
{
int ret;
char errbuf[100];
RunModeInitialize();
TimeModeSetLive();
/* Initialize the API and check version compatibility */
if ((ret = NT_Init(NTAPI_VERSION)) != NT_SUCCESS) {
NT_ExplainError(ret, errbuf, sizeof(errbuf));
SCLogError(SC_ERR_NAPATECH_INIT_FAILED ,"NT_Init failed. Code 0x%X = %s", ret, errbuf);
exit(EXIT_FAILURE);
}
ret = NapatechRegisterDeviceStreams();
if (ret < 0 || num_configured_streams <= 0) {
SCLogError(SC_ERR_NAPATECH_STREAMS_REGISTER_FAILED, "Unable to setup up Napatech Streams");
exit(EXIT_FAILURE);
}
switch(runmode) {
case NT_RUNMODE_AUTOFP:
ret = RunModeSetLiveCaptureAutoFp(NapatechConfigParser, NapatechGetThreadsCount,
"NapatechStream", "NapatechDecode",
"RxNT", NULL);
break;
case NT_RUNMODE_WORKERS:
ret = RunModeSetLiveCaptureWorkers(NapatechConfigParser, NapatechGetThreadsCount,
"NapatechStream", "NapatechDecode",
"RxNT", NULL);
break;
default:
ret = -1;
}
if (ret != 0) {
SCLogError(SC_ERR_RUNMODE, "Runmode start failed");
exit(EXIT_FAILURE);
}
return 0;
}
int RunModeNapatechAutoFp(void)
{
return NapatechInit(NT_RUNMODE_AUTOFP);
}
int RunModeNapatechWorkers(void)
{
return NapatechInit(NT_RUNMODE_WORKERS);
}
#endif
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