suricata
source-erf-dag.c
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1 /* Copyright (C) 2010-2020 Open Information Security Foundation
2  *
3  * You can copy, redistribute or modify this Program under the terms of
4  * the GNU General Public License version 2 as published by the Free
5  * Software Foundation.
6  *
7  * This program is distributed in the hope that it will be useful,
8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10  * GNU General Public License for more details.
11  *
12  * You should have received a copy of the GNU General Public License
13  * version 2 along with this program; if not, write to the Free Software
14  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
15  * 02110-1301, USA.
16  */
17 
18 /**
19  * \file
20  *
21  * \author Endace Technology Limited.
22  * \author Jason MacLulich <jason.maclulich@endace.com>
23  *
24  * Support for reading ERF records from a DAG card.
25  *
26  * Only ethernet supported at this time.
27  */
28 
29 #include "suricata-common.h"
30 #include "suricata.h"
31 #include "tm-threads.h"
32 
33 #include "util-privs.h"
34 #include "util-datalink.h"
35 #include "util-device.h"
36 #include "tmqh-packetpool.h"
37 #include "source-erf-dag.h"
38 
39 #ifndef HAVE_DAG
40 
41 TmEcode NoErfDagSupportExit(ThreadVars *, const void *, void **);
42 
43 void
45 {
46  tmm_modules[TMM_RECEIVEERFDAG].name = "ReceiveErfDag";
47  tmm_modules[TMM_RECEIVEERFDAG].ThreadInit = NoErfDagSupportExit;
53 }
54 
55 void
57 {
58  tmm_modules[TMM_DECODEERFDAG].name = "DecodeErfDag";
59  tmm_modules[TMM_DECODEERFDAG].ThreadInit = NoErfDagSupportExit;
65 }
66 
67 TmEcode
68 NoErfDagSupportExit(ThreadVars *tv, const void *initdata, void **data)
69 {
70  SCLogError("Error creating thread %s: you do not have support for DAG cards "
71  "enabled please recompile with --enable-dag",
72  tv->name);
73  exit(EXIT_FAILURE);
74 }
75 
76 #else /* Implied we do have DAG support */
77 
78 #include <dagapi.h>
79 
80 /* Minimum amount of data to read from the DAG at a time. */
81 #define MINDATA 32768
82 
83 /* Maximum time (us) to wait for MINDATA to be read. */
84 #define MAXWAIT 20000
85 
86 /* Poll interval in microseconds. */
87 #define POLL_INTERVAL 1000;
88 
89 /* Number of bytes per loop to process before fetching more data. */
90 #define BYTES_PER_LOOP (4 * 1024 * 1024) /* 4 MB */
91 
92 extern uint16_t max_pending_packets;
93 
94 typedef struct ErfDagThreadVars_ {
97 
98  int dagfd;
99  int dagstream;
100  char dagname[DAGNAME_BUFSIZE];
101 
102  struct timeval maxwait, poll; /* Could possibly be made static */
103 
105 
106  uint64_t bytes;
107  uint16_t packets;
108  uint16_t drops;
109 
110  /* Current location in the DAG stream input buffer.
111  */
112  uint8_t *top;
113  uint8_t *btm;
114 
116 
117 static inline TmEcode ProcessErfDagRecords(ErfDagThreadVars *ewtn, uint8_t *top,
118  uint32_t *pkts_read);
119 static inline TmEcode ProcessErfDagRecord(ErfDagThreadVars *ewtn, char *prec);
120 TmEcode ReceiveErfDagLoop(ThreadVars *, void *data, void *slot);
121 TmEcode ReceiveErfDagThreadInit(ThreadVars *, const void *, void **);
124 TmEcode DecodeErfDagThreadInit(ThreadVars *, const void *, void **);
126 TmEcode DecodeErfDag(ThreadVars *, Packet *, void *);
127 void ReceiveErfDagCloseStream(int dagfd, int stream);
128 
129 /**
130  * \brief Register the ERF file receiver (reader) module.
131  */
132 void
134 {
135  tmm_modules[TMM_RECEIVEERFDAG].name = "ReceiveErfDag";
145 }
146 
147 /**
148  * \brief Register the ERF file decoder module.
149  */
150 void
152 {
153  tmm_modules[TMM_DECODEERFDAG].name = "DecodeErfDag";
160 }
161 
162 /**
163  * \brief Initialize the ERF receiver thread, generate a single
164  * ErfDagThreadVar structure for each thread, this will
165  * contain a DAG file descriptor which is read when the
166  * thread executes.
167  *
168  * \param tv Thread variable to ThreadVars
169  * \param initdata Initial data to the interface passed from the user,
170  * this is processed by the user.
171  *
172  * We assume that we have only a single name for the DAG
173  * interface.
174  *
175  * \param data data pointer gets populated with
176  *
177  */
178 TmEcode ReceiveErfDagThreadInit(ThreadVars *tv, const void *initdata, void **data)
179 {
180  SCEnter();
181  int stream_count = 0;
182 
183  if (initdata == NULL) {
184  SCLogError("Error: No DAG interface provided.");
186  }
187 
188  ErfDagThreadVars *ewtn = SCCalloc(1, sizeof(ErfDagThreadVars));
189  if (unlikely(ewtn == NULL)) {
190  FatalError("Failed to allocate memory for ERF DAG thread vars.");
191  }
192 
193  /* dag_parse_name will return a DAG device name and stream number
194  * to open for this thread.
195  */
196  if (dag_parse_name(initdata, ewtn->dagname, DAGNAME_BUFSIZE,
197  &ewtn->dagstream) < 0) {
198  SCLogError("Failed to parse DAG interface: %s", (const char *)initdata);
199  SCFree(ewtn);
200  exit(EXIT_FAILURE);
201  }
202 
203  ewtn->livedev = LiveGetDevice(initdata);
204  if (ewtn->livedev == NULL) {
205  SCLogError("Unable to get %s live device", (const char *)initdata);
206  SCFree(ewtn);
208  }
209 
210  SCLogInfo("Opening DAG: %s on stream: %d for processing",
211  ewtn->dagname, ewtn->dagstream);
212 
213  if ((ewtn->dagfd = dag_open(ewtn->dagname)) < 0) {
214  SCLogError("Failed to open DAG: %s", ewtn->dagname);
215  SCFree(ewtn);
217  }
218 
219  /* Check to make sure the card has enough available streams to
220  * support reading from the one specified.
221  */
222  if ((stream_count = dag_rx_get_stream_count(ewtn->dagfd)) < 0) {
223  SCLogError("Failed to open stream: %d, DAG: %s, could not query stream count",
224  ewtn->dagstream, ewtn->dagname);
225  SCFree(ewtn);
227  }
228 
229  /* Check to make sure we have enough rx streams to open the stream
230  * the user is asking for.
231  */
232  if (ewtn->dagstream > stream_count * 2) {
233  SCLogError("Failed to open stream: %d, DAG: %s, insufficient streams: %d", ewtn->dagstream,
234  ewtn->dagname, stream_count);
235  SCFree(ewtn);
237  }
238 
239  /* If we are transmitting into a soft DAG card then set the stream
240  * to act in reverse mode.
241  */
242  if (0 != (ewtn->dagstream & 0x01)) {
243  /* Setting reverse mode for using with soft dag from daemon side */
244  if (dag_set_mode(ewtn->dagfd, ewtn->dagstream, DAG_REVERSE_MODE)) {
245  SCLogError("Failed to set mode to DAG_REVERSE_MODE on stream: %d, DAG: %s",
246  ewtn->dagstream, ewtn->dagname);
247  SCFree(ewtn);
249  }
250  }
251 
252  if (dag_attach_stream(ewtn->dagfd, ewtn->dagstream, 0, 0) < 0) {
253  SCLogError("Failed to open DAG stream: %d, DAG: %s", ewtn->dagstream, ewtn->dagname);
254  SCFree(ewtn);
256  }
257 
258  if (dag_start_stream(ewtn->dagfd, ewtn->dagstream) < 0) {
259  SCLogError("Failed to start DAG stream: %d, DAG: %s", ewtn->dagstream, ewtn->dagname);
260  SCFree(ewtn);
262  }
263 
264  SCLogInfo("Attached and started stream: %d on DAG: %s",
265  ewtn->dagstream, ewtn->dagname);
266 
267  /*
268  * Initialise DAG Polling parameters.
269  */
270  timerclear(&ewtn->maxwait);
271  ewtn->maxwait.tv_usec = MAXWAIT;
272  timerclear(&ewtn->poll);
273  ewtn->poll.tv_usec = POLL_INTERVAL;
274 
275  /* 32kB minimum data to return -- we still restrict the number of
276  * pkts that are processed to a maximum of dag_max_read_packets.
277  */
278  if (dag_set_stream_poll(ewtn->dagfd, ewtn->dagstream, MINDATA,
279  &(ewtn->maxwait), &(ewtn->poll)) < 0) {
280  SCLogError("Failed to set poll parameters for stream: %d, DAG: %s", ewtn->dagstream,
281  ewtn->dagname);
282  SCFree(ewtn);
284  }
285 
286  ewtn->packets = StatsRegisterCounter("capture.dag_packets", tv);
287  ewtn->drops = StatsRegisterCounter("capture.dag_drops", tv);
288 
289  ewtn->tv = tv;
290  *data = (void *)ewtn;
291 
293 
294  SCLogInfo("Starting processing packets from stream: %d on DAG: %s",
295  ewtn->dagstream, ewtn->dagname);
296 
298 }
299 
300 /**
301  * \brief Receives packets from a DAG interface.
302  *
303  * \param tv pointer to ThreadVars
304  * \param data pointer to ErfDagThreadVars
305  * \param slot slot containing task information
306  *
307  * \retval TM_ECODE_OK on success
308  * \retval TM_ECODE_FAILED on failure
309  */
310 TmEcode
311 ReceiveErfDagLoop(ThreadVars *tv, void *data, void *slot)
312 {
313  SCEnter();
314 
316  uint32_t diff = 0;
317  int err;
318  uint8_t *top = NULL;
319  uint32_t pkts_read = 0;
320  TmSlot *s = (TmSlot *)slot;
321 
322  dtv->slot = s->slot_next;
323 
324  // Indicate that the thread is actually running its application level code (i.e., it can poll
325  // packets)
327 
328  while (1) {
331  }
332 
333  top = dag_advance_stream(dtv->dagfd, dtv->dagstream, &(dtv->btm));
334  if (top == NULL) {
335  if (errno == EAGAIN) {
336  if (dtv->dagstream & 0x1) {
337  TmThreadsCaptureHandleTimeout(tv, NULL);
338  usleep(10 * 1000);
339  dtv->btm = dtv->top;
340  }
341  continue;
342  } else {
343  SCLogError("Failed to read from stream: %d, DAG: %s when "
344  "using dag_advance_stream",
345  dtv->dagstream, dtv->dagname);
347  }
348  }
349 
350  diff = top - dtv->btm;
351  if (diff == 0) {
352  continue;
353  }
354 
355  assert(diff >= dag_record_size);
356 
357  err = ProcessErfDagRecords(dtv, top, &pkts_read);
358 
359  if (err == TM_ECODE_FAILED) {
360  SCLogError("Failed to read from stream: %d, DAG: %s", dtv->dagstream, dtv->dagname);
361  ReceiveErfDagCloseStream(dtv->dagfd, dtv->dagstream);
363  }
364 
366 
367  SCLogDebug("Read %d records from stream: %d, DAG: %s",
368  pkts_read, dtv->dagstream, dtv->dagname);
369  }
370 
372 }
373 
374 /**
375  * \brief Process a chunk of records read from a DAG interface.
376  *
377  * This function takes a pointer to buffer read from the DAG interface
378  * and processes it individual records.
379  */
380 static inline TmEcode
381 ProcessErfDagRecords(ErfDagThreadVars *ewtn, uint8_t *top, uint32_t *pkts_read)
382 {
383  SCEnter();
384 
385  int err = 0;
386  dag_record_t *dr = NULL;
387  char *prec = NULL;
388  int rlen;
389  char hdr_type = 0;
390  int processed = 0;
391 
392  *pkts_read = 0;
393 
394  while (((top - ewtn->btm) >= dag_record_size) &&
395  ((processed + dag_record_size) < BYTES_PER_LOOP)) {
396 
397  /* Make sure we have at least one packet in the packet pool,
398  * to prevent us from alloc'ing packets at line rate. */
399  PacketPoolWait();
400 
401  prec = (char *)ewtn->btm;
402  dr = (dag_record_t*)prec;
403  rlen = SCNtohs(dr->rlen);
404  hdr_type = dr->type;
405 
406  /* If we don't have enough data to finish processing this ERF
407  * record return and maybe next time we will.
408  */
409  if ((top - ewtn->btm) < rlen)
411 
412  ewtn->btm += rlen;
413  processed += rlen;
414 
415  /* Only support ethernet at this time. */
416  switch (hdr_type & 0x7f) {
417  case ERF_TYPE_PAD:
418  case ERF_TYPE_META:
419  /* Skip. */
420  continue;
421  case ERF_TYPE_DSM_COLOR_ETH:
422  case ERF_TYPE_COLOR_ETH:
423  case ERF_TYPE_COLOR_HASH_ETH:
424  /* In these types the color value overwrites the lctr
425  * (drop count). */
426  break;
427  case ERF_TYPE_ETH:
428  if (dr->lctr) {
429  StatsAddUI64(ewtn->tv, ewtn->drops, SCNtohs(dr->lctr));
430  }
431  break;
432  default:
433  SCLogError("Processing of DAG record type: %d not implemented.", dr->type);
435  }
436 
437  err = ProcessErfDagRecord(ewtn, prec);
438  if (err != TM_ECODE_OK) {
440  }
441 
442  (*pkts_read)++;
443  }
444 
446 }
447 
448 /**
449  * \brief Process a DAG record into a TM packet buffer.
450  * \param prec pointer to a DAG record.
451  * \param
452  */
453 static inline TmEcode
454 ProcessErfDagRecord(ErfDagThreadVars *ewtn, char *prec)
455 {
456  SCEnter();
457 
458  int wlen = 0;
459  int rlen = 0;
460  int hdr_num = 0;
461  char hdr_type = 0;
462  dag_record_t *dr = (dag_record_t*)prec;
463  erf_payload_t *pload;
464  Packet *p;
465 
466  hdr_type = dr->type;
467  wlen = SCNtohs(dr->wlen);
468  rlen = SCNtohs(dr->rlen);
469 
470  /* count extension headers */
471  while (hdr_type & 0x80) {
472  if (rlen < (dag_record_size + (hdr_num * 8))) {
473  SCLogError("Insufficient captured packet length.");
475  }
476  hdr_type = prec[(dag_record_size + (hdr_num * 8))];
477  hdr_num++;
478  }
479 
480  /* Check that the whole frame was captured */
481  if (rlen < (dag_record_size + (8 * hdr_num) + 2 + wlen)) {
482  SCLogInfo("Incomplete frame captured.");
484  }
485 
486  /* skip over extension headers */
487  pload = (erf_payload_t *)(prec + dag_record_size + (8 * hdr_num));
488 
490  if (p == NULL) {
491  SCLogError("Failed to allocate a Packet on stream: %d, DAG: %s", ewtn->dagstream,
492  ewtn->dagname);
494  }
496 
497  SET_PKT_LEN(p, wlen);
499 
500  /* Take into account for link type Ethernet ETH frame starts
501  * after the ERF header + pad.
502  */
503  if (unlikely(PacketCopyData(p, pload->eth.dst, GET_PKT_LEN(p)))) {
504  TmqhOutputPacketpool(ewtn->tv, p);
506  }
507 
508  /* Convert ERF time to SCTime_t */
509  uint64_t ts = dr->ts;
510  p->ts = SCTIME_FROM_SECS(ts >> 32);
511  ts = (ts & 0xffffffffULL) * 1000000;
512  ts += 0x80000000; /* rounding */
513  uint64_t usecs = ts >> 32;
514  p->ts = SCTIME_ADD_USECS(p->ts, usecs);
515 
516  StatsIncr(ewtn->tv, ewtn->packets);
517  ewtn->bytes += wlen;
518 
519  if (TmThreadsSlotProcessPkt(ewtn->tv, ewtn->slot, p) != TM_ECODE_OK) {
521  }
522 
524 }
525 
526 /**
527  * \brief Print some stats to the log at program exit.
528  *
529  * \param tv Pointer to ThreadVars.
530  * \param data Pointer to data, ErfFileThreadVars.
531  */
532 void
534 {
535  ErfDagThreadVars *ewtn = (ErfDagThreadVars *)data;
536 
537  (void)SC_ATOMIC_SET(ewtn->livedev->pkts,
539  (void)SC_ATOMIC_SET(ewtn->livedev->drop,
541 
542  SCLogInfo("Stream: %d; Bytes: %"PRIu64"; Packets: %"PRIu64
543  "; Drops: %"PRIu64,
544  ewtn->dagstream,
545  ewtn->bytes,
548 }
549 
550 /**
551  * \brief Deinitializes the DAG card.
552  * \param tv pointer to ThreadVars
553  * \param data pointer that gets cast into PcapThreadVars for ptv
554  */
555 TmEcode
557 {
558  SCEnter();
559 
560  ErfDagThreadVars *ewtn = (ErfDagThreadVars *)data;
561 
563 
565 }
566 
567 void
568 ReceiveErfDagCloseStream(int dagfd, int stream)
569 {
570  dag_stop_stream(dagfd, stream);
571  dag_detach_stream(dagfd, stream);
572  dag_close(dagfd);
573 }
574 
575 /** Decode ErfDag */
576 
577 /**
578  * \brief This function passes off to link type decoders.
579  *
580  * DecodeErfDag decodes packets from DAG and passes
581  * them off to the proper link type decoder.
582  *
583  * \param t pointer to ThreadVars
584  * \param p pointer to the current packet
585  * \param data pointer that gets cast into PcapThreadVars for ptv
586  */
587 TmEcode
588 DecodeErfDag(ThreadVars *tv, Packet *p, void *data)
589 {
590  SCEnter();
592 
594 
595  /* update counters */
597 
598  /* call the decoder */
599  switch(p->datalink) {
600  case LINKTYPE_ETHERNET:
602  break;
603  default:
604  SCLogError("Error: datalink type %" PRId32 " not yet supported in module DecodeErfDag",
605  p->datalink);
606  break;
607  }
608 
610 
612 }
613 
614 TmEcode DecodeErfDagThreadInit(ThreadVars *tv, const void *initdata, void **data)
615 {
616  SCEnter();
617  DecodeThreadVars *dtv = NULL;
618 
620 
621  if (dtv == NULL)
623 
625 
626  *data = (void *)dtv;
627 
629 }
630 
631 TmEcode
633 {
634  if (data != NULL)
635  DecodeThreadVarsFree(tv, data);
637 }
638 
639 #endif /* HAVE_DAG */
TmModule_::cap_flags
uint8_t cap_flags
Definition: tm-modules.h:74
tm-threads.h
max_pending_packets
uint16_t max_pending_packets
Definition: suricata.c:182
ts
uint64_t ts
Definition: source-erf-file.c:55
BYTES_PER_LOOP
#define BYTES_PER_LOOP
Definition: source-erf-dag.c:90
StatsIncr
void StatsIncr(ThreadVars *tv, uint16_t id)
Increments the local counter.
Definition: counters.c:166
TMM_RECEIVEERFDAG
@ TMM_RECEIVEERFDAG
Definition: tm-threads-common.h:52
ThreadVars_::name
char name[16]
Definition: threadvars.h:64
PacketCopyData
int PacketCopyData(Packet *p, const uint8_t *pktdata, uint32_t pktlen)
Copy data to Packet payload and set packet length.
Definition: decode.c:351
PKT_IS_PSEUDOPKT
#define PKT_IS_PSEUDOPKT(p)
return 1 if the packet is a pseudo packet
Definition: decode.h:1334
unlikely
#define unlikely(expr)
Definition: util-optimize.h:35
SC_ATOMIC_SET
#define SC_ATOMIC_SET(name, val)
Set the value for the atomic variable.
Definition: util-atomic.h:386
SCLogDebug
#define SCLogDebug(...)
Definition: util-debug.h:269
TmThreadsSetFlag
void TmThreadsSetFlag(ThreadVars *tv, uint32_t flag)
Set a thread flag.
Definition: tm-threads.c:99
ErfDagThreadVars_::btm
uint8_t * btm
Definition: source-erf-dag.c:113
LiveDevice_
Definition: util-device.h:50
THV_RUNNING
#define THV_RUNNING
Definition: threadvars.h:54
SURICATA_STOP
#define SURICATA_STOP
Definition: suricata.h:89
ErfDagThreadVars_::bytes
uint64_t bytes
Definition: source-erf-dag.c:106
util-privs.h
ErfDagThreadVars_::top
uint8_t * top
Definition: source-erf-dag.c:112
PacketDecodeFinalize
void PacketDecodeFinalize(ThreadVars *tv, DecodeThreadVars *dtv, Packet *p)
Finalize decoding of a packet.
Definition: decode.c:206
TmqhOutputPacketpool
void TmqhOutputPacketpool(ThreadVars *t, Packet *p)
Definition: tmqh-packetpool.c:317
TM_ECODE_FAILED
@ TM_ECODE_FAILED
Definition: tm-threads-common.h:85
tmqh-packetpool.h
TmModule_::PktAcqLoop
TmEcode(* PktAcqLoop)(ThreadVars *, void *, void *)
Definition: tm-modules.h:55
TM_ECODE_OK
@ TM_ECODE_OK
Definition: tm-threads-common.h:84
MINDATA
#define MINDATA
Definition: source-erf-dag.c:81
ErfDagThreadVars_::dagname
char dagname[DAGNAME_BUFSIZE]
Definition: source-erf-dag.c:100
TmModule_::ThreadDeinit
TmEcode(* ThreadDeinit)(ThreadVars *, void *)
Definition: tm-modules.h:50
Packet_::datalink
int datalink
Definition: decode.h:622
source-erf-dag.h
PKT_SET_SRC
#define PKT_SET_SRC(p, src_val)
Definition: decode.h:1337
DecodeRegisterPerfCounters
void DecodeRegisterPerfCounters(DecodeThreadVars *dtv, ThreadVars *tv)
Definition: decode.c:602
SET_PKT_LEN
#define SET_PKT_LEN(p, len)
Definition: decode.h:218
SCTIME_FROM_SECS
#define SCTIME_FROM_SECS(s)
Definition: util-time.h:69
util-device.h
PKT_SRC_WIRE
@ PKT_SRC_WIRE
Definition: decode.h:55
SCTIME_ADD_USECS
#define SCTIME_ADD_USECS(ts, us)
Definition: util-time.h:59
TmModule_::PktAcqBreakLoop
TmEcode(* PktAcqBreakLoop)(ThreadVars *, void *)
Definition: tm-modules.h:58
Packet_::ts
SCTime_t ts
Definition: decode.h:530
LiveGetDevice
LiveDevice * LiveGetDevice(const char *name)
Get a pointer to the device at idx.
Definition: util-device.c:248
MAXWAIT
#define MAXWAIT
Definition: source-erf-dag.c:84
SCEnter
#define SCEnter(...)
Definition: util-debug.h:271
GET_PKT_DATA
#define GET_PKT_DATA(p)
Definition: decode.h:214
ThreadVars_
Per thread variable structure.
Definition: threadvars.h:57
TmModule_::Func
TmEcode(* Func)(ThreadVars *, Packet *, void *)
Definition: tm-modules.h:53
ErfDagThreadVars_::livedev
LiveDevice * livedev
Definition: source-erf-dag.c:104
ReceiveErfDagThreadExitStats
void ReceiveErfDagThreadExitStats(ThreadVars *, void *)
Print some stats to the log at program exit.
Definition: source-erf-dag.c:533
ReceiveErfDagCloseStream
void ReceiveErfDagCloseStream(int dagfd, int stream)
Definition: source-erf-dag.c:568
ErfDagThreadVars_::packets
uint16_t packets
Definition: source-erf-dag.c:107
SC_CAP_NET_ADMIN
#define SC_CAP_NET_ADMIN
Definition: util-privs.h:31
ErfDagThreadVars_::dagfd
int dagfd
Definition: source-erf-dag.c:98
BUG_ON
#define BUG_ON(x)
Definition: suricata-common.h:300
StatsGetLocalCounterValue
uint64_t StatsGetLocalCounterValue(ThreadVars *tv, uint16_t id)
Get the value of the local copy of the counter that hold this id.
Definition: counters.c:1260
PacketPoolWait
void PacketPoolWait(void)
Definition: tmqh-packetpool.c:80
TMM_DECODEERFDAG
@ TMM_DECODEERFDAG
Definition: tm-threads-common.h:53
Packet_
Definition: decode.h:482
TM_FLAG_DECODE_TM
#define TM_FLAG_DECODE_TM
Definition: tm-modules.h:33
tmm_modules
TmModule tmm_modules[TMM_SIZE]
Definition: tm-modules.c:33
wlen
uint16_t wlen
Definition: source-erf-file.c:60
GET_PKT_LEN
#define GET_PKT_LEN(p)
Definition: decode.h:213
TmSlot_
Definition: tm-threads.h:53
DecodeErfDag
TmEcode DecodeErfDag(ThreadVars *, Packet *, void *)
This function passes off to link type decoders.
Definition: source-erf-dag.c:588
TmEcode
TmEcode
Definition: tm-threads-common.h:83
TmModuleDecodeErfDagRegister
void TmModuleDecodeErfDagRegister(void)
Register the ERF file decoder module.
Definition: source-erf-dag.c:151
TmModule_::name
const char * name
Definition: tm-modules.h:45
SCLogInfo
#define SCLogInfo(...)
Macro used to log INFORMATIONAL messages.
Definition: util-debug.h:224
TM_FLAG_RECEIVE_TM
#define TM_FLAG_RECEIVE_TM
Definition: tm-modules.h:32
dtv
DecodeThreadVars * dtv
Definition: fuzz_decodepcapfile.c:33
POLL_INTERVAL
#define POLL_INTERVAL
Definition: source-erf-dag.c:87
ErfDagThreadVars_::poll
struct timeval maxwait poll
Definition: source-erf-dag.c:102
DecodeThreadVarsFree
void DecodeThreadVarsFree(ThreadVars *tv, DecodeThreadVars *dtv)
Definition: decode.c:791
SCNtohs
#define SCNtohs(x)
Definition: suricata-common.h:414
suricata-common.h
ErfDagThreadVars_::tv
ThreadVars * tv
Definition: source-erf-dag.c:95
TmModule_::ThreadInit
TmEcode(* ThreadInit)(ThreadVars *, const void *, void **)
Definition: tm-modules.h:48
FatalError
#define FatalError(...)
Definition: util-debug.h:502
ErfDagThreadVars_::dagstream
int dagstream
Definition: source-erf-dag.c:99
tv
ThreadVars * tv
Definition: fuzz_decodepcapfile.c:32
DecodeErfDagThreadInit
TmEcode DecodeErfDagThreadInit(ThreadVars *, const void *, void **)
Definition: source-erf-dag.c:614
TmModuleReceiveErfDagRegister
void TmModuleReceiveErfDagRegister(void)
Register the ERF file receiver (reader) module.
Definition: source-erf-dag.c:133
TmModule_::ThreadExitPrintStats
void(* ThreadExitPrintStats)(ThreadVars *, void *)
Definition: tm-modules.h:49
StatsAddUI64
void StatsAddUI64(ThreadVars *tv, uint16_t id, uint64_t x)
Adds a value of type uint64_t to the local counter.
Definition: counters.c:146
ErfDagThreadVars_::drops
uint16_t drops
Definition: source-erf-dag.c:108
ErfDagThreadVars_::slot
TmSlot * slot
Definition: source-erf-dag.c:96
SCLogError
#define SCLogError(...)
Macro used to log ERROR messages.
Definition: util-debug.h:261
SCFree
#define SCFree(p)
Definition: util-mem.h:61
DecodeThreadVars_
Structure to hold thread specific data for all decode modules.
Definition: decode.h:946
DecodeThreadVarsAlloc
DecodeThreadVars * DecodeThreadVarsAlloc(ThreadVars *tv)
Alloc and setup DecodeThreadVars.
Definition: decode.c:773
ReceiveErfDagThreadDeinit
TmEcode ReceiveErfDagThreadDeinit(ThreadVars *, void *)
Deinitializes the DAG card.
Definition: source-erf-dag.c:556
DecodeErfDagThreadDeinit
TmEcode DecodeErfDagThreadDeinit(ThreadVars *tv, void *data)
Definition: source-erf-dag.c:632
ReceiveErfDagLoop
TmEcode ReceiveErfDagLoop(ThreadVars *, void *data, void *slot)
Receives packets from a DAG interface.
Definition: source-erf-dag.c:311
suricata.h
TmSlot_::slot_next
struct TmSlot_ * slot_next
Definition: tm-threads.h:62
StatsSyncCountersIfSignalled
void StatsSyncCountersIfSignalled(ThreadVars *tv)
Definition: counters.c:454
ReceiveErfDagThreadInit
TmEcode ReceiveErfDagThreadInit(ThreadVars *, const void *, void **)
Initialize the ERF receiver thread, generate a single ErfDagThreadVar structure for each thread,...
Definition: source-erf-dag.c:178
StatsRegisterCounter
uint16_t StatsRegisterCounter(const char *name, struct ThreadVars_ *tv)
Registers a normal, unqualified counter.
Definition: counters.c:961
SCCalloc
#define SCCalloc(nm, sz)
Definition: util-mem.h:53
SCReturnInt
#define SCReturnInt(x)
Definition: util-debug.h:275
Packet_::type
uint8_t type
Definition: decode.h:492
ErfDagThreadVars
struct ErfDagThreadVars_ ErfDagThreadVars
PacketGetFromQueueOrAlloc
Packet * PacketGetFromQueueOrAlloc(void)
Get a packet. We try to get a packet from the packetpool first, but if that is empty we alloc a packe...
Definition: decode.c:267
DecodeEthernet
int DecodeEthernet(ThreadVars *tv, DecodeThreadVars *dtv, Packet *p, const uint8_t *pkt, uint32_t len)
Definition: decode-ethernet.c:42
TmModule_::flags
uint8_t flags
Definition: tm-modules.h:77
DecodeUpdatePacketCounters
void DecodeUpdatePacketCounters(ThreadVars *tv, const DecodeThreadVars *dtv, const Packet *p)
Definition: decode.c:739
LINKTYPE_ETHERNET
#define LINKTYPE_ETHERNET
Definition: decode.h:1248
suricata_ctl_flags
volatile uint8_t suricata_ctl_flags
Definition: suricata.c:171
ErfDagThreadVars_
Definition: source-erf-dag.c:94
rlen
uint16_t rlen
Definition: source-erf-file.c:58