stream-tcp.h File Reference

#include "stream-tcp-private.h"
#include "stream.h"
#include "stream-tcp-reassemble.h"
#include "suricata.h"

Include dependency graph for stream-tcp.h:

Go to the source code of this file.

Data Structures
struct	TcpStreamCnf_
struct	StreamTcpThread_

Macros
#define	STREAM_VERBOSE   false
#define	STREAMTCP_INIT_FLAG_CHECKSUM_VALIDATION   BIT_U8(0)
#define	STREAMTCP_INIT_FLAG_DROP_INVALID   BIT_U8(1)
#define	STREAMTCP_INIT_FLAG_BYPASS   BIT_U8(2)
#define	STREAMTCP_INIT_FLAG_INLINE   BIT_U8(3)

Typedefs
typedef struct TcpStreamCnf_	TcpStreamCnf
typedef struct StreamTcpThread_	StreamTcpThread
typedef int(*	StreamReassembleRawFunc) (void *data, const uint8_t *input, const uint32_t input_len, const uint64_t offset)

Enumerations
enum	{ STREAM_HAS_UNPROCESSED_SEGMENTS_NONE = 0, STREAM_HAS_UNPROCESSED_SEGMENTS_NEED_ONLY_DETECTION = 1 }

Functions
void	StreamTcpInitConfig (bool)
	To initialize the stream global configuration data. More...
void	StreamTcpFreeConfig (bool)
void	StreamTcpRegisterTests (void)
void	StreamTcpSessionPktFree (Packet *)
	Function to return the stream segments back to the pool. More...
void	StreamTcpInitMemuse (void)
void	StreamTcpIncrMemuse (uint64_t)
void	StreamTcpDecrMemuse (uint64_t)
int	StreamTcpSetMemcap (uint64_t)
	Update memcap value. More...
uint64_t	StreamTcpGetMemcap (void)
	Return memcap value. More...
int	StreamTcpCheckMemcap (uint64_t)
	Check if alloc'ing "size" would mean we're over memcap. More...
uint64_t	StreamTcpMemuseCounter (void)
uint64_t	StreamTcpReassembleMemuseGlobalCounter (void)
int	StreamTcpSegmentForEach (const Packet *p, uint8_t flag, StreamSegmentCallback CallbackFunc, void *data)
int	StreamTcpSegmentForSession (const Packet *p, uint8_t flag, StreamSegmentCallback CallbackFunc, void *data)
	Run callback function on each TCP segment in both directions of a session. More...
void	StreamTcpReassembleConfigEnableOverlapCheck (void)
void	TcpSessionSetReassemblyDepth (TcpSession *ssn, uint32_t size)
int	StreamReassembleForFrame (TcpSession *ssn, TcpStream *stream, StreamReassembleRawFunc Callback, void *cb_data, const uint64_t offset, const bool eof)
int	StreamReassembleLog (TcpSession *ssn, TcpStream *stream, StreamReassembleRawFunc Callback, void *cb_data, uint64_t progress_in, uint64_t *progress_out, bool eof)
int	StreamReassembleRaw (TcpSession *ssn, const Packet *p, StreamReassembleRawFunc Callback, void *cb_data, uint64_t *progress_out, bool respect_inspect_depth)
void	StreamReassembleRawUpdateProgress (TcpSession *ssn, Packet *p, const uint64_t progress)
	update stream engine after detection More...
void	StreamTcpDetectLogFlush (ThreadVars *tv, StreamTcpThread *stt, Flow *f, Packet *p, PacketQueueNoLock *pq)
	create packets in both directions to flush out logging and detection before switching protocols. In IDS mode, create first in packet dir, 2nd in opposing In IPS mode, do the reverse. Flag TCP engine that data needs to be inspected regardless of how far we are wrt inspect limits. More...
const char *	StreamTcpStateAsString (const enum TcpState)
const char *	StreamTcpSsnStateAsString (const TcpSession *ssn)
TmEcode	StreamTcp (ThreadVars *, Packet *, void *, PacketQueueNoLock *)
uint8_t	StreamNeedsReassembly (const TcpSession *ssn, uint8_t direction)
	see what if any work the TCP session still needs More...
TmEcode	StreamTcpThreadInit (ThreadVars *, void *, void **)
TmEcode	StreamTcpThreadDeinit (ThreadVars *tv, void *data)
int	StreamTcpPacket (ThreadVars *tv, Packet *p, StreamTcpThread *stt, PacketQueueNoLock *pq)
void	StreamTcpSessionClear (void *ssnptr)
	Function to return the stream back to the pool. It returns the segments in the stream to the segment pool. More...
void	StreamTcpSessionCleanup (TcpSession *ssn)
	Session cleanup function. Does not free the ssn. More...
void	StreamTcpStreamCleanup (TcpStream *stream)
int	StreamTcpBypassEnabled (void)
int	StreamTcpInlineMode (void)
	See if stream engine is operating in inline mode. More...
int	TcpSessionPacketSsnReuse (const Packet *p, const Flow *f, const void *tcp_ssn)
void	StreamTcpUpdateAppLayerProgress (TcpSession *ssn, char direction, const uint32_t progress)
	update reassembly progress More...
uint64_t	StreamTcpGetAcked (const TcpStream *stream)
uint64_t	StreamTcpGetUsable (const TcpStream *stream, const bool eof)
uint64_t	StreamDataRightEdge (const TcpStream *stream, const bool eof)
void	StreamTcpThreadCacheEnable (void)
	enable segment cache. Should only be done for worker threads More...
void	StreamTcpThreadCacheCleanup (void)

Variables
TcpStreamCnf	stream_config

Detailed Description

Author

Victor Julien victo.nosp@m.r@in.nosp@m.linia.nosp@m.c.ne.nosp@m.t

Gurvinder Singh gurvi.nosp@m.nder.nosp@m.singh.nosp@m.dahi.nosp@m.ya@gm.nosp@m.ail..nosp@m.com

Definition in file stream-tcp.h.

Macro Definition Documentation

STREAM_VERBOSE

#define STREAM_VERBOSE   false

Definition at line 35 of file stream-tcp.h.

STREAMTCP_INIT_FLAG_BYPASS

#define STREAMTCP_INIT_FLAG_BYPASS   BIT_U8(2)

Definition at line 40 of file stream-tcp.h.

STREAMTCP_INIT_FLAG_CHECKSUM_VALIDATION

#define STREAMTCP_INIT_FLAG_CHECKSUM_VALIDATION   BIT_U8(0)

Definition at line 38 of file stream-tcp.h.

STREAMTCP_INIT_FLAG_DROP_INVALID

#define STREAMTCP_INIT_FLAG_DROP_INVALID   BIT_U8(1)

Definition at line 39 of file stream-tcp.h.

STREAMTCP_INIT_FLAG_INLINE

#define STREAMTCP_INIT_FLAG_INLINE   BIT_U8(3)

Definition at line 41 of file stream-tcp.h.

Typedef Documentation

StreamReassembleRawFunc

typedef int(* StreamReassembleRawFunc) (void *data, const uint8_t *input, const uint32_t input_len, const uint64_t offset)

Definition at line 129 of file stream-tcp.h.

StreamTcpThread

typedef struct StreamTcpThread_ StreamTcpThread

TcpStreamCnf

typedef struct TcpStreamCnf_ TcpStreamCnf

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
STREAM_HAS_UNPROCESSED_SEGMENTS_NONE
STREAM_HAS_UNPROCESSED_SEGMENTS_NEED_ONLY_DETECTION

Definition at line 171 of file stream-tcp.h.

Function Documentation

StreamDataRightEdge()

uint64_t StreamDataRightEdge	(	const TcpStream *	stream,
		const bool	eof
	)

Definition at line 415 of file stream-tcp-reassemble.c.

References TcpStream_::base_seq, FALSE, MIN, TcpStream_::segs_right_edge, STREAM_BASE_OFFSET, and StreamTcpInlineMode().

Here is the call graph for this function:

StreamNeedsReassembly()

uint8_t StreamNeedsReassembly	(	const TcpSession *	ssn,
		uint8_t	direction
	)

see what if any work the TCP session still needs

Definition at line 911 of file stream-tcp-reassemble.c.

References TcpStream_::base_seq, TcpSession_::client, TcpStream_::flags, TcpSession_::flags, SCLogDebug, TcpStream_::segs_right_edge, TcpSession_::server, STREAM_APP_PROGRESS, STREAM_BASE_OFFSET, STREAM_HAS_UNPROCESSED_SEGMENTS_NEED_ONLY_DETECTION, STREAM_RAW_PROGRESS, STREAMTCP_FLAG_APP_LAYER_DISABLED, and STREAMTCP_STREAM_FLAG_DISABLE_RAW.

Referenced by FlowForceReassemblyNeedReassembly().

Here is the caller graph for this function:

StreamReassembleForFrame()

int StreamReassembleForFrame	(	TcpSession *	ssn,
		TcpStream *	stream,
		StreamReassembleRawFunc	Callback,
		void *	cb_data,
		const uint64_t	offset,
		const bool	eof
	)

Definition at line 1841 of file stream-tcp-reassemble.c.

References SCLogDebug, and STREAM_APP_PROGRESS.

StreamReassembleLog()

int StreamReassembleLog	(	TcpSession *	ssn,
		TcpStream *	stream,
		StreamReassembleRawFunc	Callback,
		void *	cb_data,
		uint64_t	progress_in,
		uint64_t *	progress_out,
		bool	eof
	)

Definition at line 1918 of file stream-tcp-reassemble.c.

References TcpStream_::flags, and STREAMTCP_STREAM_FLAG_NOREASSEMBLY.

StreamReassembleRaw()

int StreamReassembleRaw	(	TcpSession *	ssn,
		const Packet *	p,
		StreamReassembleRawFunc	Callback,
		void *	cb_data,
		uint64_t *	progress_out,
		bool	respect_inspect_depth
	)

Definition at line 1853 of file stream-tcp-reassemble.c.

References StreamTcpInlineMode(), and TRUE.

Referenced by DetectEngineInspectStreamPayload().

Here is the call graph for this function:

Here is the caller graph for this function:

StreamReassembleRawUpdateProgress()

void StreamReassembleRawUpdateProgress	(	TcpSession *	ssn,
		Packet *	p,
		const uint64_t	progress
	)

update stream engine after detection

Tasked with progressing the 'progress' for Raw reassembly. 2 main scenario's:

1. progress is != 0, so we use this
2. progress is 0, meaning the detect engine didn't touch raw at all. In this case we need to look into progressing raw anyway.

Additionally, this function is tasked with disabling raw reassembly if the app-layer requested to disable it.

Definition at line 1508 of file stream-tcp-reassemble.c.

References TcpSession_::client, TcpStream_::flags, TcpSession_::flags, PKT_IS_TOSERVER, TcpStream_::raw_progress_rel, TcpSession_::server, STREAM_APP_PROGRESS, STREAM_RAW_PROGRESS, STREAMTCP_FLAG_APP_LAYER_DISABLED, and STREAMTCP_STREAM_FLAG_TRIGGER_RAW.

StreamTcp()

TmEcode StreamTcp	(	ThreadVars *	,
		Packet *	,
		void *	,
		PacketQueueNoLock *
	)

Definition at line 5718 of file stream-tcp.c.

References DEBUG_VALIDATE_BUG_ON, Packet_::flow, FlowGetPacketDirection(), Packet_::pcap_cnt, PKT_IS_TCP, Packet_::pkt_src, PktSrcToString(), SCLogDebug, t_pcapcnt, TM_ECODE_OK, TOSERVER, and unlikely.

Here is the call graph for this function:

StreamTcpBypassEnabled()

int StreamTcpBypassEnabled

(

void

)

Definition at line 6839 of file stream-tcp.c.

References TcpStreamCnf_::flags, stream_config, and STREAMTCP_INIT_FLAG_BYPASS.

StreamTcpCheckMemcap()

int StreamTcpCheckMemcap

(

uint64_t

size

)

Check if alloc'ing "size" would mean we're over memcap.

Return values

1	if in bounds
0	if not in bounds

Definition at line 164 of file stream-tcp.c.

References SC_ATOMIC_GET, and stream_config.

StreamTcpDecrMemuse()

void StreamTcpDecrMemuse

(

uint64_t

)

Definition at line 131 of file stream-tcp.c.

References BUG_ON, RunmodeIsUnittests(), SC_ATOMIC_GET, SC_ATOMIC_SUB, SCLogDebug, and StreamTcpMemuseCounter().

Here is the call graph for this function:

StreamTcpDetectLogFlush()

void StreamTcpDetectLogFlush	(	ThreadVars *	tv,
		StreamTcpThread *	stt,
		Flow *	f,
		Packet *	p,
		PacketQueueNoLock *	pq
	)

create packets in both directions to flush out logging and detection before switching protocols. In IDS mode, create first in packet dir, 2nd in opposing In IPS mode, do the reverse. Flag TCP engine that data needs to be inspected regardless of how far we are wrt inspect limits.

Definition at line 6673 of file stream-tcp.c.

References TcpSession_::client, TcpStream_::flags, PKT_IS_TOSERVER, Flow_::protoctx, TcpSession_::server, STREAMTCP_STREAM_FLAG_TRIGGER_RAW, StreamTcpInlineMode(), and ts.

Here is the call graph for this function:

StreamTcpFreeConfig()

void StreamTcpFreeConfig

(

bool

)

Definition at line 695 of file stream-tcp.c.

References SCMutexLock, and StreamTcpReassembleFree().

Referenced by StreamTcpUTDeinit().

Here is the call graph for this function:

Here is the caller graph for this function:

StreamTcpGetAcked()

uint64_t StreamTcpGetAcked

(

const TcpStream *

stream

)

Definition at line 409 of file stream-tcp-reassemble.c.

StreamTcpGetMemcap()

uint64_t StreamTcpGetMemcap

(

void

)

Return memcap value.

Parameters

memcap

memcap value

Definition at line 192 of file stream-tcp.c.

References SC_ATOMIC_GET, and stream_config.

StreamTcpGetUsable()

uint64_t StreamTcpGetUsable	(	const TcpStream *	stream,
		const bool	eof
	)

Definition at line 424 of file stream-tcp-reassemble.c.

Referenced by FrameJsonLogOneFrame().

Here is the caller graph for this function:

StreamTcpIncrMemuse()

void StreamTcpIncrMemuse

(

uint64_t

)

Definition at line 124 of file stream-tcp.c.

References SC_ATOMIC_ADD, SCLogDebug, and StreamTcpMemuseCounter().

Here is the call graph for this function:

StreamTcpInitConfig()

void StreamTcpInitConfig

(

bool

quiet

)

To initialize the stream global configuration data.

Parameters

quiet

It tells the mode of operation, if it is true nothing will be get printed.

Definition at line 359 of file stream-tcp.c.

References TcpStreamCnf_::async_oneside, ConfGet(), ConfGetBool(), ConfGetInt(), ConfGetNode(), EngineModeIsIPS(), EXCEPTION_POLICY_NOT_SET, ExceptionPolicyParse(), FatalError, TcpStreamCnf_::flags, TcpStreamCnf_::max_syn_queued, TcpStreamCnf_::max_synack_queued, TcpStreamCnf_::midstream, TcpStreamCnf_::midstream_policy, ParseSizeStringU16(), ParseSizeStringU32(), ParseSizeStringU64(), TcpStreamCnf_::prealloc_sessions, TcpStreamCnf_::reassembly_depth, TcpStreamCnf_::reassembly_memcap_policy, TcpStreamCnf_::reassembly_toserver_chunk_size, RunmodeIsUnittests(), SC_ATOMIC_GET, SC_ATOMIC_INIT, SC_ATOMIC_SET, SCLogDebug, SCLogError, SCLogWarning, TcpStreamCnf_::ssn_memcap_policy, stream_config, STREAMTCP_DEFAULT_MAX_SYN_QUEUED, STREAMTCP_DEFAULT_MAX_SYNACK_QUEUED, STREAMTCP_DEFAULT_MEMCAP, STREAMTCP_DEFAULT_PREALLOC, STREAMTCP_DEFAULT_REASSEMBLY_MEMCAP, STREAMTCP_DEFAULT_TOSERVER_CHUNK_SIZE, STREAMTCP_INIT_FLAG_BYPASS, STREAMTCP_INIT_FLAG_CHECKSUM_VALIDATION, STREAMTCP_INIT_FLAG_DROP_INVALID, STREAMTCP_INIT_FLAG_INLINE, and WarnInvalidConfEntry.

Referenced by PreRunInit(), and StreamTcpUTInit().

Here is the call graph for this function:

Here is the caller graph for this function:

StreamTcpInitMemuse()

void StreamTcpInitMemuse

(

void

)

Definition at line 119 of file stream-tcp.c.

References SC_ATOMIC_INIT.

Referenced by UtRunTests().

Here is the caller graph for this function:

StreamTcpInlineMode()

int StreamTcpInlineMode

(

void

)

See if stream engine is operating in inline mode.

Return values

0	no
1	yes

Definition at line 6850 of file stream-tcp.c.

References TcpStreamCnf_::flags, stream_config, and STREAMTCP_INIT_FLAG_INLINE.

Referenced by StreamDataRightEdge(), StreamReassembleRaw(), StreamReassembleRawHasDataReady(), StreamTcpDetectLogFlush(), and StreamTcpReassembleHandleSegment().

Here is the caller graph for this function:

StreamTcpMemuseCounter()

uint64_t StreamTcpMemuseCounter

(

void

)

Definition at line 152 of file stream-tcp.c.

References SC_ATOMIC_GET.

Referenced by StreamTcpDecrMemuse(), and StreamTcpIncrMemuse().

Here is the caller graph for this function:

StreamTcpPacket()

int StreamTcpPacket	(	ThreadVars *	tv,
		Packet *	p,
		StreamTcpThread *	stt,
		PacketQueueNoLock *	pq
	)

Definition at line 5320 of file stream-tcp.c.

References TcpSession_::client, DEBUG_ASSERT_FLOW_LOCKED, TcpSession_::flags, Packet_::flow, Packet_::pcap_cnt, PKT_IS_TOCLIENT, PKT_IS_TOSERVER, Flow_::protoctx, SCEnter, SCLogDebug, TcpSession_::server, STREAM_PKT_BROKEN_ACK, STREAMTCP_FLAG_ASYNC, StreamTcpSetEvent, TcpStream_::tcp_flags, TCP_GET_ACK, TcpSession_::tcp_packet_flags, Packet_::tcph, and TH_ACK.

StreamTcpReassembleConfigEnableOverlapCheck()

void StreamTcpReassembleConfigEnableOverlapCheck

(

void

)

Definition at line 40 of file stream-tcp-list.c.

StreamTcpReassembleMemuseGlobalCounter()

uint64_t StreamTcpReassembleMemuseGlobalCounter

(

void

)

Definition at line 148 of file stream-tcp-reassemble.c.

References SC_ATOMIC_GET.

Referenced by StreamTcpReassembleDecrMemuse(), and StreamTcpReassembleIncrMemuse().

Here is the caller graph for this function:

StreamTcpRegisterTests()

void StreamTcpRegisterTests

(

void

)

Definition at line 3401 of file stream-tcp.c.

References UtRegisterTest().

Here is the call graph for this function:

StreamTcpSegmentForEach()

int StreamTcpSegmentForEach	(	const Packet *	p,
		uint8_t	flag,
		StreamSegmentCallback	CallbackFunc,
		void *	data
	)

Definition at line 6697 of file stream-tcp.c.

Referenced by StreamSegmentForEach().

Here is the caller graph for this function:

StreamTcpSegmentForSession()

int StreamTcpSegmentForSession	(	const Packet *	p,
		uint8_t	flag,
		StreamSegmentCallback	CallbackFunc,
		void *	data
	)

Run callback function on each TCP segment in both directions of a session.

Note

when stream engine is running in inline mode all segments are used, in IDS/non-inline mode only ack'd segments are iterated.

Must be called under flow lock.

Returns

-1 in case of error, the number of segment in case of success

Definition at line 6756 of file stream-tcp.c.

Referenced by StreamSegmentForSession().

Here is the caller graph for this function:

StreamTcpSessionCleanup()

void StreamTcpSessionCleanup

(

TcpSession *

ssn

)

Session cleanup function. Does not free the ssn.

Parameters

ssn	tcp session

Definition at line 225 of file stream-tcp.c.

References TcpSession_::client, SCEnter, TcpSession_::server, and StreamTcpStreamCleanup().

Referenced by StreamTcpSessionClear(), StreamTcpUTClearSession(), and UTHRemoveSessionFromFlow().

Here is the call graph for this function:

Here is the caller graph for this function:

StreamTcpSessionClear()

void StreamTcpSessionClear

(

void *

ssnptr

)

Function to return the stream back to the pool. It returns the segments in the stream to the segment pool.

This function is called when the flow is destroyed, so it should free everything related to the tcp session. So including the app layer data.

Parameters

ssn	Void ptr to the ssn.

Definition at line 249 of file stream-tcp.c.

References pool_id, TcpSession_::pool_id, SCEnter, SCMutexLock, StreamTcpSessionCleanup(), and StreamTcpThreadCacheReturnSession().

Here is the call graph for this function:

StreamTcpSessionPktFree()

void StreamTcpSessionPktFree

(

Packet *

p

)

Function to return the stream segments back to the pool.

Parameters

p	Packet used to identify the stream.

Definition at line 278 of file stream-tcp.c.

References TcpSession_::client, Packet_::flow, Flow_::protoctx, SCEnter, SCReturn, TcpSession_::server, and StreamTcpReturnStreamSegments().

Here is the call graph for this function:

StreamTcpSetMemcap()

int StreamTcpSetMemcap

(

uint64_t

size

)

Update memcap value.

Parameters

size	new memcap value

Definition at line 177 of file stream-tcp.c.

References SC_ATOMIC_GET, SC_ATOMIC_SET, and stream_config.

StreamTcpSsnStateAsString()

const char* StreamTcpSsnStateAsString

(

const TcpSession *

ssn

)

Definition at line 6906 of file stream-tcp.c.

References TcpSession_::state, and StreamTcpStateAsString().

Here is the call graph for this function:

StreamTcpStateAsString()

const char* StreamTcpStateAsString

(

const enum

TcpState

)

Definition at line 6865 of file stream-tcp.c.

References TCP_CLOSE_WAIT, TCP_CLOSED, TCP_CLOSING, TCP_ESTABLISHED, TCP_FIN_WAIT1, TCP_FIN_WAIT2, TCP_LAST_ACK, TCP_NONE, TCP_SYN_RECV, TCP_SYN_SENT, and TCP_TIME_WAIT.

Referenced by StreamTcpSsnStateAsString().

Here is the caller graph for this function:

StreamTcpStreamCleanup()

void StreamTcpStreamCleanup

(

TcpStream *

stream

)

Definition at line 198 of file stream-tcp.c.

References TcpStream_::sb, TcpStreamCnf_::sbcnf, stream_config, StreamingBufferClear(), StreamTcpReturnStreamSegments(), and StreamTcpSackFreeList().

Referenced by StreamTcpSessionCleanup(), and StreamTcpUTClearStream().

Here is the call graph for this function:

Here is the caller graph for this function:

StreamTcpThreadCacheCleanup()

void StreamTcpThreadCacheCleanup

(

void

)

Definition at line 134 of file stream-tcp-cache.c.

References SCEnter, and SCLogDebug.

Referenced by StreamTcpReassembleFreeThreadCtx().

Here is the caller graph for this function:

StreamTcpThreadCacheEnable()

void StreamTcpThreadCacheEnable

(

void

)

enable segment cache. Should only be done for worker threads

Definition at line 48 of file stream-tcp-cache.c.

Referenced by StreamTcpThreadInit().

Here is the caller graph for this function:

StreamTcpThreadDeinit()

TmEcode StreamTcpThreadDeinit	(	ThreadVars *	tv,
		void *	data
	)

Definition at line 5829 of file stream-tcp.c.

References StreamTcpThread_::ra_ctx, SCEnter, SCFree, SCReturnInt, StreamTcpReassembleFreeThreadCtx(), and TM_ECODE_OK.

Here is the call graph for this function:

StreamTcpThreadInit()

TmEcode StreamTcpThreadInit	(	ThreadVars *	,
		void *	,
		void **
	)

Definition at line 5760 of file stream-tcp.c.

References StreamTcpThread_::counter_tcp_ack_unseen_data, StreamTcpThread_::counter_tcp_active_sessions, StreamTcpThread_::counter_tcp_invalid_checksum, StreamTcpThread_::counter_tcp_midstream_pickups, StreamTcpThread_::counter_tcp_pseudo, StreamTcpThread_::counter_tcp_pseudo_failed, TcpReassemblyThreadCtx_::counter_tcp_reass_data_normal_fail, TcpReassemblyThreadCtx_::counter_tcp_reass_data_overlap_fail, TcpReassemblyThreadCtx_::counter_tcp_reass_gap, TcpReassemblyThreadCtx_::counter_tcp_reass_overlap, TcpReassemblyThreadCtx_::counter_tcp_reass_overlap_diff_data, TcpReassemblyThreadCtx_::counter_tcp_segment_from_cache, TcpReassemblyThreadCtx_::counter_tcp_segment_from_pool, TcpReassemblyThreadCtx_::counter_tcp_segment_memcap, StreamTcpThread_::counter_tcp_sessions, StreamTcpThread_::counter_tcp_ssn_from_cache, StreamTcpThread_::counter_tcp_ssn_from_pool, StreamTcpThread_::counter_tcp_ssn_memcap, TcpReassemblyThreadCtx_::counter_tcp_stream_depth, StreamTcpThread_::counter_tcp_wrong_thread, StreamTcpThread_::ra_ctx, SCEnter, SCLogDebug, SCMalloc, SCMutexLock, SCReturnInt, StreamTcpThread_::ssn_pool_id, StatsRegisterCounter(), StreamTcpReassembleInitThreadCtx(), StreamTcpThreadCacheEnable(), TM_ECODE_FAILED, tv, and unlikely.

Here is the call graph for this function:

StreamTcpUpdateAppLayerProgress()

void StreamTcpUpdateAppLayerProgress	(	TcpSession *	ssn,
		char	direction,
		const uint32_t	progress
	)

update reassembly progress

Parameters

ssn	TCP Session
direction	direction to set the flag in: 0 toserver, 1 toclient

Definition at line 6425 of file stream-tcp.c.

References TcpStream_::app_progress_rel, TcpSession_::client, SCLogDebug, TcpSession_::server, and STREAM_APP_PROGRESS.

TcpSessionPacketSsnReuse()

int TcpSessionPacketSsnReuse	(	const Packet *	p,
		const Flow *	f,
		const void *	tcp_ssn
	)

Definition at line 5706 of file stream-tcp.c.

References Packet_::proto, and Packet_::tcph.

TcpSessionSetReassemblyDepth()

void TcpSessionSetReassemblyDepth	(	TcpSession *	ssn,
		uint32_t	size
	)

Definition at line 6856 of file stream-tcp.c.

References TcpSession_::reassembly_depth.

Variable Documentation

stream_config

TcpStreamCnf stream_config

Definition at line 115 of file stream-tcp.c.

Referenced by StreamTcpBypassEnabled(), StreamTcpCheckMemcap(), StreamTcpGetMemcap(), StreamTcpInitConfig(), StreamTcpInlineMode(), StreamTcpSetMemcap(), and StreamTcpStreamCleanup().