suricata
flow-timeout.c
Go to the documentation of this file.
1 /* Copyright (C) 2007-2024 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 Anoop Saldanha <anoopsaldanha@gmail.com>
22  */
23 
24 #include "suricata-common.h"
25 #include "suricata.h"
26 #include "decode.h"
27 #include "conf.h"
28 #include "threadvars.h"
29 #include "tm-threads.h"
30 #include "runmodes.h"
31 
32 #include "util-random.h"
33 #include "util-time.h"
34 
35 #include "flow.h"
36 #include "flow-queue.h"
37 #include "flow-hash.h"
38 #include "flow-util.h"
39 #include "flow-var.h"
40 #include "flow-private.h"
41 #include "flow-manager.h"
42 #include "flow-timeout.h"
43 #include "pkt-var.h"
44 #include "host.h"
45 
46 #include "stream-tcp-private.h"
47 #include "stream-tcp-reassemble.h"
48 #include "stream-tcp.h"
49 
50 #include "util-unittest.h"
51 #include "util-unittest-helper.h"
52 #include "util-byte.h"
53 
54 #include "util-debug.h"
55 #include "util-privs.h"
56 #include "util-datalink.h"
57 
58 #include "detect.h"
59 #include "detect-engine-state.h"
60 #include "stream.h"
61 
62 #include "app-layer-parser.h"
63 #include "app-layer.h"
64 
65 #include "util-profiling.h"
66 
67 /**
68  * \internal
69  * \brief Pseudo packet setup to finish a flow when needed.
70  *
71  * \param p a dummy pseudo packet from packet pool. Not all pseudo
72  * packets need to force reassembly, in which case we just
73  * set dummy ack/seq values.
74  * \param direction Direction of the packet. 0 indicates toserver and 1
75  * indicates toclient.
76  * \param f Pointer to the flow.
77  * \param ssn Pointer to the tcp session.
78  * \retval pseudo packet with everything set up
79  */
80 static inline Packet *FlowPseudoPacketSetup(
81  Packet *p, int direction, Flow *f, const TcpSession *ssn)
82 {
83  const int orig_dir = direction;
84  p->tenant_id = f->tenant_id;
86  p->proto = IPPROTO_TCP;
87  FlowReference(&p->flow, f);
88  p->flags |= PKT_STREAM_EST;
89  p->flags |= PKT_STREAM_EOF;
90  p->flags |= PKT_HAS_FLOW;
92  memcpy(&p->vlan_id[0], &f->vlan_id[0], sizeof(p->vlan_id));
93  p->vlan_idx = f->vlan_idx;
94  p->livedev = (struct LiveDevice_ *)f->livedev;
95 
97  DecodeSetNoPacketInspectionFlag(p);
98  }
100  DecodeSetNoPayloadInspectionFlag(p);
101  }
102 
103  if (direction == 0)
105  else
108  p->payload = NULL;
109  p->payload_len = 0;
110 
111  /* apply reversed flow logic after setting direction to the packet */
112  direction ^= ((f->flags & FLOW_DIR_REVERSED) != 0);
113 
114  if (FLOW_IS_IPV4(f)) {
115  if (direction == 0) {
118  p->sp = f->sp;
119  p->dp = f->dp;
120  } else {
123  p->sp = f->dp;
124  p->dp = f->sp;
125  }
126 
127  /* Check if we have enough room in direct data. We need ipv4 hdr + tcp hdr.
128  * Force an allocation if it is not the case.
129  */
130  if (GET_PKT_DIRECT_MAX_SIZE(p) < 40) {
131  if (PacketCallocExtPkt(p, 40) == -1) {
132  goto error;
133  }
134  }
135  /* set the ip header */
136  IPV4Hdr *ip4h = PacketSetIPV4(p, GET_PKT_DATA(p));
137  /* version 4 and length 20 bytes for the tcp header */
138  ip4h->ip_verhl = 0x45;
139  ip4h->ip_tos = 0;
140  ip4h->ip_len = htons(40);
141  ip4h->ip_id = 0;
142  ip4h->ip_off = 0;
143  ip4h->ip_ttl = 64;
144  ip4h->ip_proto = IPPROTO_TCP;
145  //p->ip4h->ip_csum =
146  if (direction == 0) {
147  ip4h->s_ip_src.s_addr = f->src.addr_data32[0];
148  ip4h->s_ip_dst.s_addr = f->dst.addr_data32[0];
149  } else {
150  ip4h->s_ip_src.s_addr = f->dst.addr_data32[0];
151  ip4h->s_ip_dst.s_addr = f->src.addr_data32[0];
152  }
153 
154  /* set the tcp header */
155  PacketSetTCP(p, GET_PKT_DATA(p) + 20);
156 
157  SET_PKT_LEN(p, 40); /* ipv4 hdr + tcp hdr */
158 
159  } else if (FLOW_IS_IPV6(f)) {
160  if (direction == 0) {
163  p->sp = f->sp;
164  p->dp = f->dp;
165  } else {
168  p->sp = f->dp;
169  p->dp = f->sp;
170  }
171 
172  /* Check if we have enough room in direct data. We need ipv6 hdr + tcp hdr.
173  * Force an allocation if it is not the case.
174  */
175  if (GET_PKT_DIRECT_MAX_SIZE(p) < 60) {
176  if (PacketCallocExtPkt(p, 60) == -1) {
177  goto error;
178  }
179  }
180  /* set the ip header */
181  IPV6Hdr *ip6h = PacketSetIPV6(p, GET_PKT_DATA(p));
182  /* version 6 */
183  ip6h->s_ip6_vfc = 0x60;
184  ip6h->s_ip6_flow = 0;
185  ip6h->s_ip6_nxt = IPPROTO_TCP;
186  ip6h->s_ip6_plen = htons(20);
187  ip6h->s_ip6_hlim = 64;
188  if (direction == 0) {
189  ip6h->s_ip6_src[0] = f->src.addr_data32[0];
190  ip6h->s_ip6_src[1] = f->src.addr_data32[1];
191  ip6h->s_ip6_src[2] = f->src.addr_data32[2];
192  ip6h->s_ip6_src[3] = f->src.addr_data32[3];
193  ip6h->s_ip6_dst[0] = f->dst.addr_data32[0];
194  ip6h->s_ip6_dst[1] = f->dst.addr_data32[1];
195  ip6h->s_ip6_dst[2] = f->dst.addr_data32[2];
196  ip6h->s_ip6_dst[3] = f->dst.addr_data32[3];
197  } else {
198  ip6h->s_ip6_src[0] = f->dst.addr_data32[0];
199  ip6h->s_ip6_src[1] = f->dst.addr_data32[1];
200  ip6h->s_ip6_src[2] = f->dst.addr_data32[2];
201  ip6h->s_ip6_src[3] = f->dst.addr_data32[3];
202  ip6h->s_ip6_dst[0] = f->src.addr_data32[0];
203  ip6h->s_ip6_dst[1] = f->src.addr_data32[1];
204  ip6h->s_ip6_dst[2] = f->src.addr_data32[2];
205  ip6h->s_ip6_dst[3] = f->src.addr_data32[3];
206  }
207 
208  /* set the tcp header */
209  PacketSetTCP(p, GET_PKT_DATA(p) + 40);
210 
211  SET_PKT_LEN(p, 60); /* ipv6 hdr + tcp hdr */
212  }
213 
214  p->l4.hdrs.tcph->th_offx2 = 0x50;
215  p->l4.hdrs.tcph->th_flags = 0;
216  p->l4.hdrs.tcph->th_win = 10;
217  p->l4.hdrs.tcph->th_urp = 0;
218 
219  /* to server */
220  if (orig_dir == 0) {
221  p->l4.hdrs.tcph->th_sport = htons(f->sp);
222  p->l4.hdrs.tcph->th_dport = htons(f->dp);
223 
224  p->l4.hdrs.tcph->th_seq = htonl(ssn->client.next_seq);
225  p->l4.hdrs.tcph->th_ack = 0;
226 
227  /* to client */
228  } else {
229  p->l4.hdrs.tcph->th_sport = htons(f->dp);
230  p->l4.hdrs.tcph->th_dport = htons(f->sp);
231 
232  p->l4.hdrs.tcph->th_seq = htonl(ssn->server.next_seq);
233  p->l4.hdrs.tcph->th_ack = 0;
234  }
235 
236  if (FLOW_IS_IPV4(f)) {
237  IPV4Hdr *ip4h = p->l3.hdrs.ip4h;
238  p->l4.hdrs.tcph->th_sum = TCPChecksum(ip4h->s_ip_addrs, (uint16_t *)p->l4.hdrs.tcph, 20, 0);
239  /* calc ipv4 csum as we may log it and barnyard might reject
240  * a wrong checksum */
241  ip4h->ip_csum = IPV4Checksum((uint16_t *)ip4h, IPV4_GET_RAW_HLEN(ip4h), 0);
242  } else if (FLOW_IS_IPV6(f)) {
243  const IPV6Hdr *ip6h = PacketGetIPv6(p);
244  p->l4.hdrs.tcph->th_sum =
245  TCPChecksum(ip6h->s_ip6_addrs, (uint16_t *)p->l4.hdrs.tcph, 20, 0);
246  }
247 
248  p->ts = TimeGet();
249 
250  if (direction == 0) {
251  if (f->alparser && !STREAM_HAS_SEEN_DATA(&ssn->client)) {
253  }
254  } else {
255  if (f->alparser && !STREAM_HAS_SEEN_DATA(&ssn->server)) {
257  }
258  }
259 
260  return p;
261 
262 error:
263  FlowDeReference(&p->flow);
264  return NULL;
265 }
266 
267 Packet *FlowPseudoPacketGet(int direction, Flow *f, const TcpSession *ssn)
268 {
269  PacketPoolWait();
271  if (p == NULL) {
272  return NULL;
273  }
274 
276 
277  return FlowPseudoPacketSetup(p, direction, f, ssn);
278 }
279 
280 /**
281  * \brief Check if a flow needs forced reassembly, or any other processing
282  *
283  * \param f *LOCKED* flow
284  *
285  * \retval false no
286  * \retval true yes
287  */
289 {
290 
291  if (f == NULL || f->protoctx == NULL) {
292  return false;
293  }
294 
295  TcpSession *ssn = (TcpSession *)f->protoctx;
296  uint8_t client = StreamNeedsReassembly(ssn, STREAM_TOSERVER);
297  uint8_t server = StreamNeedsReassembly(ssn, STREAM_TOCLIENT);
298 
299  /* if state is not fully closed we assume that we haven't fully
300  * inspected the app layer state yet */
301  if (ssn->state >= TCP_ESTABLISHED && ssn->state != TCP_CLOSED)
302  {
305  }
306 
307  /* if app layer still needs some love, push through */
308  if (f->alproto != ALPROTO_UNKNOWN && f->alstate != NULL) {
309  const uint64_t total_txs = AppLayerParserGetTxCnt(f, f->alstate);
310 
311  if (AppLayerParserGetTransactionActive(f, f->alparser, STREAM_TOCLIENT) < total_txs)
312  {
314  }
315  if (AppLayerParserGetTransactionActive(f, f->alparser, STREAM_TOSERVER) < total_txs)
316  {
318  }
319  }
320 
321  /* nothing to do */
322  if (client == STREAM_HAS_UNPROCESSED_SEGMENTS_NONE &&
324  return false;
325  }
326 
327  f->ffr_ts = client;
328  f->ffr_tc = server;
329  return true;
330 }
331 
332 /**
333  * \internal
334  * \brief Sends the flow to its respective thread's flow queue.
335  *
336  * The function requires flow to be locked beforehand.
337  *
338  * Normally, the first thread_id value should be used. This is when the flow is
339  * created on seeing the first packet to the server; when the flow's reversed
340  * flag is set, choose the second thread_id (to client/source).
341  *
342  * \param f Pointer to the flow.
343  */
345 {
346  // Choose the thread_id based on whether the flow has been
347  // reversed.
348  int idx = f->flags & FLOW_DIR_REVERSED ? 1 : 0;
349  TmThreadsInjectFlowById(f, (const int)f->thread_id[idx]);
350 }
351 
352 /**
353  * \internal
354  * \brief Remove flows from the hash bucket as they have more work to be done in
355  * in the detection engine.
356  *
357  * When this function is called we're running in virtually dead engine,
358  * so locking the flows is not strictly required. The reasons it is still
359  * done are:
360  * - code consistency
361  * - silence complaining profilers
362  * - allow us to aggressively check using debug validation assertions
363  * - be robust in case of future changes
364  * - locking overhead is negligible when no other thread fights us
365  */
366 static inline void FlowRemoveHash(void)
367 {
368  for (uint32_t idx = 0; idx < flow_config.hash_size; idx++) {
369  FlowBucket *fb = &flow_hash[idx];
370  FBLOCK_LOCK(fb);
371 
372  Flow *f = fb->head;
373  Flow *prev_f = NULL;
374 
375  /* we need to loop through all the flows in the queue */
376  while (f != NULL) {
377  Flow *next_f = f->next;
378 
379  FLOWLOCK_WRLOCK(f);
380 
381  /* Get the tcp session for the flow */
382  TcpSession *ssn = (TcpSession *)f->protoctx;
383  /* \todo Also skip flows that shouldn't be inspected */
384  if (ssn == NULL) {
385  FLOWLOCK_UNLOCK(f);
386  prev_f = f;
387  f = next_f;
388  continue;
389  }
390 
391  /* in case of additional work, we pull the flow out of the
392  * hash and xfer ownership to the injected packet(s) */
393  if (FlowNeedsReassembly(f)) {
394  RemoveFromHash(f, prev_f);
397  FLOWLOCK_UNLOCK(f);
398  f = next_f;
399  continue;
400  }
401 
402  FLOWLOCK_UNLOCK(f);
403 
404  /* next flow in the queue */
405  prev_f = f;
406  f = f->next;
407  }
408  FBLOCK_UNLOCK(fb);
409  }
410 }
411 
412 /**
413  * \brief Clean up all the flows that have unprocessed segments and have
414  * some work to do in the detection engine.
415  */
417 {
418  /* Carry out cleanup of unattended flows */
419  FlowRemoveHash();
420 }
Flow_::ffr_tc
uint8_t ffr_tc
Definition: flow.h:388
util-byte.h
host.h
tm-threads.h
Packet_::proto
uint8_t proto
Definition: decode.h:497
TCPHdr_::th_dport
uint16_t th_dport
Definition: decode-tcp.h:151
Flow_::ffr_ts
uint8_t ffr_ts
Definition: flow.h:387
FLOW_IS_IPV6
#define FLOW_IS_IPV6(f)
Definition: flow.h:171
PKT_HAS_FLOW
#define PKT_HAS_FLOW
Definition: decode.h:1266
IPV4Hdr_::ip_ttl
uint8_t ip_ttl
Definition: decode-ipv4.h:78
flow-util.h
FBLOCK_LOCK
#define FBLOCK_LOCK(fb)
Definition: flow-hash.h:73
stream-tcp.h
FlowCnf_::hash_size
uint32_t hash_size
Definition: flow.h:294
STREAM_HAS_UNPROCESSED_SEGMENTS_NEED_ONLY_DETECTION
@ STREAM_HAS_UNPROCESSED_SEGMENTS_NEED_ONLY_DETECTION
Definition: stream-tcp.h:180
Packet_::payload
uint8_t * payload
Definition: decode.h:573
Packet_::flags
uint32_t flags
Definition: decode.h:512
FlowSendToLocalThread
void FlowSendToLocalThread(Flow *f)
Definition: flow-timeout.c:344
Packet_::vlan_idx
uint8_t vlan_idx
Definition: decode.h:503
flow-private.h
Flow_
Flow data structure.
Definition: flow.h:356
TCPHdr_::th_win
uint16_t th_win
Definition: decode-tcp.h:156
LiveDevice_
Definition: util-device.h:50
flow-hash.h
FLOW_NOPAYLOAD_INSPECTION
#define FLOW_NOPAYLOAD_INSPECTION
Definition: flow.h:66
IPV4Hdr_::ip_id
uint16_t ip_id
Definition: decode-ipv4.h:76
PacketL3::hdrs
union PacketL3::Hdrs hdrs
FLOW_PKT_TOSERVER
#define FLOW_PKT_TOSERVER
Definition: flow.h:232
TCP_ESTABLISHED
@ TCP_ESTABLISHED
Definition: stream-tcp-private.h:155
IPV4Hdr_::ip_tos
uint8_t ip_tos
Definition: decode-ipv4.h:74
FlowPseudoPacketGet
Packet * FlowPseudoPacketGet(int direction, Flow *f, const TcpSession *ssn)
Definition: flow-timeout.c:267
util-privs.h
stream-tcp-reassemble.h
Flow_::dp
Port dp
Definition: flow.h:372
Packet_::flowflags
uint8_t flowflags
Definition: decode.h:506
PacketL3::Hdrs::ip4h
IPV4Hdr * ip4h
Definition: decode.h:413
APP_LAYER_PARSER_EOF_TS
#define APP_LAYER_PARSER_EOF_TS
Definition: app-layer-parser.h:39
Flow_::protoctx
void * protoctx
Definition: flow.h:446
GET_PKT_DIRECT_MAX_SIZE
#define GET_PKT_DIRECT_MAX_SIZE(p)
Definition: decode.h:209
Packet_::payload_len
uint16_t payload_len
Definition: decode.h:574
util-unittest.h
util-unittest-helper.h
FLOWLOCK_UNLOCK
#define FLOWLOCK_UNLOCK(fb)
Definition: flow.h:273
STREAM_HAS_UNPROCESSED_SEGMENTS_NONE
@ STREAM_HAS_UNPROCESSED_SEGMENTS_NONE
Definition: stream-tcp.h:177
TmThreadsInjectFlowById
void TmThreadsInjectFlowById(Flow *f, const int id)
inject a flow into a threads flow queue
Definition: tm-threads.c:2292
FLOW_COPY_IPV6_ADDR_TO_PACKET
#define FLOW_COPY_IPV6_ADDR_TO_PACKET(fa, pa)
Definition: flow.h:184
TCPHdr_::th_ack
uint32_t th_ack
Definition: decode-tcp.h:153
Packet_::datalink
int datalink
Definition: decode.h:607
IPV4Hdr_::ip_len
uint16_t ip_len
Definition: decode-ipv4.h:75
Flow_::alparser
AppLayerParserState * alparser
Definition: flow.h:480
Flow_::dst
FlowAddress dst
Definition: flow.h:359
SET_PKT_LEN
#define SET_PKT_LEN(p, len)
Definition: decode.h:211
TCPHdr_::th_sport
uint16_t th_sport
Definition: decode-tcp.h:150
TCPHdr_::th_flags
uint8_t th_flags
Definition: decode-tcp.h:155
decode.h
util-debug.h
AppLayerParserGetTransactionActive
uint64_t AppLayerParserGetTransactionActive(const Flow *f, AppLayerParserState *pstate, uint8_t direction)
Definition: app-layer-parser.c:1130
STREAM_HAS_SEEN_DATA
#define STREAM_HAS_SEEN_DATA(stream)
Definition: stream-tcp-private.h:104
TCPHdr_::th_seq
uint32_t th_seq
Definition: decode-tcp.h:152
Packet_::ts
SCTime_t ts
Definition: decode.h:523
TCPHdr_::th_offx2
uint8_t th_offx2
Definition: decode-tcp.h:154
PKT_PSEUDO_STREAM_END
#define PKT_PSEUDO_STREAM_END
Definition: decode.h:1268
TCPHdr_::th_sum
uint16_t th_sum
Definition: decode-tcp.h:157
FLOWLOCK_WRLOCK
#define FLOWLOCK_WRLOCK(fb)
Definition: flow.h:270
GET_PKT_DATA
#define GET_PKT_DATA(p)
Definition: decode.h:207
detect.h
Flow_::flow_end_flags
uint8_t flow_end_flags
Definition: flow.h:452
pkt-var.h
Packet_::sp
Port sp
Definition: decode.h:482
IPV4_GET_RAW_HLEN
#define IPV4_GET_RAW_HLEN(ip4h)
Definition: decode-ipv4.h:96
StreamNeedsReassembly
uint8_t StreamNeedsReassembly(const TcpSession *ssn, uint8_t direction)
see what if any work the TCP session still needs
Definition: stream-tcp-reassemble.c:914
TcpSession_::state
uint8_t state
Definition: stream-tcp-private.h:285
TCPHdr_::th_urp
uint16_t th_urp
Definition: decode-tcp.h:158
util-time.h
app-layer-parser.h
FLOW_IS_IPV4
#define FLOW_IS_IPV4(f)
Definition: flow.h:169
util-profiling.h
PacketCallocExtPkt
int PacketCallocExtPkt(Packet *p, int datalen)
Definition: decode.c:283
PacketPoolWait
void PacketPoolWait(void)
Definition: tmqh-packetpool.c:80
stream.h
IPV6Hdr_
Definition: decode-ipv6.h:32
Packet_
Definition: decode.h:475
TimeGet
SCTime_t TimeGet(void)
Definition: util-time.c:152
stream-tcp-private.h
APP_LAYER_PARSER_EOF_TC
#define APP_LAYER_PARSER_EOF_TC
Definition: app-layer-parser.h:40
conf.h
Packet_::l4
struct PacketL4 l4
Definition: decode.h:569
FBLOCK_UNLOCK
#define FBLOCK_UNLOCK(fb)
Definition: flow-hash.h:75
Packet_::livedev
struct LiveDevice_ * livedev
Definition: decode.h:586
PKT_STREAM_EOF
#define PKT_STREAM_EOF
Definition: decode.h:1265
Flow_::vlan_idx
uint8_t vlan_idx
Definition: flow.h:382
detect-engine-state.h
Data structures and function prototypes for keeping state for the detection engine.
flow-timeout.h
flow-queue.h
FLOW_PKT_TOCLIENT
#define FLOW_PKT_TOCLIENT
Definition: flow.h:233
runmodes.h
Flow_::src
FlowAddress src
Definition: flow.h:359
Flow_::next
struct Flow_ * next
Definition: flow.h:401
IPV4Hdr_
Definition: decode-ipv4.h:72
TCP_CLOSED
@ TCP_CLOSED
Definition: stream-tcp-private.h:162
flow_hash
FlowBucket * flow_hash
Definition: flow-hash.c:58
AppLayerParserStateSetFlag
void AppLayerParserStateSetFlag(AppLayerParserState *pstate, uint16_t flag)
Definition: app-layer-parser.c:1752
Packet_::flow
struct Flow_ * flow
Definition: decode.h:514
Packet_::tenant_id
uint32_t tenant_id
Definition: decode.h:633
flow-manager.h
suricata-common.h
flow_config
FlowConfig flow_config
Definition: flow.c:90
TcpSession_::client
TcpStream client
Definition: stream-tcp-private.h:295
Flow_::livedev
struct LiveDevice_ * livedev
Definition: flow.h:403
PACKET_PROFILING_START
#define PACKET_PROFILING_START(p)
Definition: util-profiling.h:73
TcpStream_::next_seq
uint32_t next_seq
Definition: stream-tcp-private.h:114
threadvars.h
PacketL4::L4Hdrs::tcph
TCPHdr * tcph
Definition: decode.h:443
Packet_::l3
struct PacketL3 l3
Definition: decode.h:568
TcpSession_::server
TcpStream server
Definition: stream-tcp-private.h:294
Flow_::alstate
void * alstate
Definition: flow.h:481
Flow_::flags
uint32_t flags
Definition: flow.h:426
PacketL4::hdrs
union PacketL4::L4Hdrs hdrs
PacketPoolGetPacket
Packet * PacketPoolGetPacket(void)
Get a new packet from the packet pool.
Definition: tmqh-packetpool.c:127
ALPROTO_UNKNOWN
@ ALPROTO_UNKNOWN
Definition: app-layer-protos.h:29
util-random.h
FLOW_PKT_ESTABLISHED
#define FLOW_PKT_ESTABLISHED
Definition: flow.h:234
IPV4Hdr_::ip_csum
uint16_t ip_csum
Definition: decode-ipv4.h:80
FLOW_END_FLAG_SHUTDOWN
#define FLOW_END_FLAG_SHUTDOWN
Definition: flow.h:246
suricata.h
Packet_::dst
Address dst
Definition: decode.h:480
Flow_::vlan_id
uint16_t vlan_id[VLAN_MAX_LAYERS]
Definition: flow.h:380
Packet_::vlan_id
uint16_t vlan_id[VLAN_MAX_LAYERS]
Definition: decode.h:502
FlowNeedsReassembly
bool FlowNeedsReassembly(Flow *f)
Check if a flow needs forced reassembly, or any other processing.
Definition: flow-timeout.c:288
FLOW_NOPACKET_INSPECTION
#define FLOW_NOPACKET_INSPECTION
Definition: flow.h:64
IPV4Hdr_::ip_off
uint16_t ip_off
Definition: decode-ipv4.h:77
Flow_::sp
Port sp
Definition: flow.h:361
TcpSession_
Definition: stream-tcp-private.h:283
flow.h
Flow_::alproto
AppProto alproto
application level protocol
Definition: flow.h:455
Packet_::dp
Port dp
Definition: decode.h:490
FLOW_DIR_REVERSED
#define FLOW_DIR_REVERSED
Definition: flow.h:111
IPV4Hdr_::ip_proto
uint8_t ip_proto
Definition: decode-ipv4.h:79
flow-var.h
AppLayerParserGetTxCnt
uint64_t AppLayerParserGetTxCnt(const Flow *f, void *alstate)
Definition: app-layer-parser.c:1080
IPV4Hdr_::ip_verhl
uint8_t ip_verhl
Definition: decode-ipv4.h:73
Packet_::src
Address src
Definition: decode.h:479
Flow_::tenant_id
uint32_t tenant_id
Definition: flow.h:421
PKT_STREAM_EST
#define PKT_STREAM_EST
Definition: decode.h:1263
Flow_::thread_id
FlowThreadId thread_id[2]
Definition: flow.h:399
app-layer.h
FLOW_COPY_IPV4_ADDR_TO_PACKET
#define FLOW_COPY_IPV4_ADDR_TO_PACKET(fa, pa)
Definition: flow.h:179
FlowWorkToDoCleanup
void FlowWorkToDoCleanup(void)
Clean up all the flows that have unprocessed segments and have some work to do in the detection engin...
Definition: flow-timeout.c:416