stream-tcp.h File Reference

#include "stream-tcp-private.h"
#include "stream.h"
#include "stream-tcp-reassemble.h"
#include "suricata.h"
#include "util-exception-policy-types.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)
#define	STREAMTCP_INIT_FLAG_DROP_URG   BIT_U8(4)
#define	TCP_STREAM_URGENT_DEFAULT   TCP_STREAM_URGENT_INLINE

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	TcpStreamUrgentHandling { TCP_STREAM_URGENT_INLINE, TCP_STREAM_URGENT_DROP, TCP_STREAM_URGENT_OOB, TCP_STREAM_URGENT_GAP }
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)
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 (const TcpSession *ssn, const TcpStream *stream, StreamReassembleRawFunc Callback, void *cb_data, const uint64_t progress_in, uint64_t *progress_out, const 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)
enum ExceptionPolicy	StreamTcpSsnMemcapGetExceptionPolicy (void)
enum ExceptionPolicy	StreamTcpReassemblyMemcapGetExceptionPolicy (void)
enum ExceptionPolicy	StreamMidstreamGetExceptionPolicy (void)
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)
bool	StreamTcpInlineMode (void)
	See if stream engine is operating in inline mode. More...
bool	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	StreamTcpGetUsable (const TcpStream *stream, const bool eof)
uint64_t	StreamDataRightEdge (const TcpStream *stream, const bool eof)

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 36 of file stream-tcp.h.

STREAMTCP_INIT_FLAG_BYPASS

#define STREAMTCP_INIT_FLAG_BYPASS   BIT_U8(2)

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

STREAMTCP_INIT_FLAG_CHECKSUM_VALIDATION

#define STREAMTCP_INIT_FLAG_CHECKSUM_VALIDATION   BIT_U8(0)

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

STREAMTCP_INIT_FLAG_DROP_INVALID

#define STREAMTCP_INIT_FLAG_DROP_INVALID   BIT_U8(1)

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

STREAMTCP_INIT_FLAG_DROP_URG

#define STREAMTCP_INIT_FLAG_DROP_URG   BIT_U8(4)

flag to drop packets with URG flag set

Definition at line 44 of file stream-tcp.h.

STREAMTCP_INIT_FLAG_INLINE

#define STREAMTCP_INIT_FLAG_INLINE   BIT_U8(3)

Definition at line 42 of file stream-tcp.h.

TCP_STREAM_URGENT_DEFAULT

#define TCP_STREAM_URGENT_DEFAULT   TCP_STREAM_URGENT_INLINE

Definition at line 48 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 143 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 188 of file stream-tcp.h.

TcpStreamUrgentHandling

enum TcpStreamUrgentHandling

Enumerator
TCP_STREAM_URGENT_INLINE	treat as inline data
TCP_STREAM_URGENT_DROP	drop TCP packet with URG flag
TCP_STREAM_URGENT_OOB	treat 1 byte of URG data as OOB
TCP_STREAM_URGENT_GAP	treat 1 byte of URG data as GAP

Definition at line 45 of file stream-tcp.h.

Function Documentation

StreamDataRightEdge()

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

Definition at line 417 of file stream-tcp-reassemble.c.

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

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StreamMidstreamGetExceptionPolicy()

enum ExceptionPolicy StreamMidstreamGetExceptionPolicy

(

void

)

Definition at line 890 of file stream-tcp.c.

StreamNeedsReassembly()

uint8_t StreamNeedsReassembly	(	const TcpSession *	ssn,
		uint8_t	direction
	)

see what if any work the TCP session still needs

Definition at line 977 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 FlowNeedsReassembly().

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StreamReassembleForFrame()

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

Definition at line 1893 of file stream-tcp-reassemble.c.

References SCLogDebug, and STREAM_APP_PROGRESS.

StreamReassembleLog()

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

Definition at line 1970 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 1905 of file stream-tcp-reassemble.c.

References StreamTcpInlineMode().

Referenced by DetectEngineInspectStreamPayload().

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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 1558 of file stream-tcp-reassemble.c.

References TcpSession_::client, DEBUG_VALIDATE_BUG_ON, 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 5943 of file stream-tcp.c.

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

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StreamTcpBypassEnabled()

int StreamTcpBypassEnabled

(

void

)

Definition at line 7088 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 266 of file stream-tcp.c.

References SC_ATOMIC_GET, and stream_config.

StreamTcpDecrMemuse()

void StreamTcpDecrMemuse

(

uint64_t

)

Definition at line 234 of file stream-tcp.c.

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

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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 6922 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.

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StreamTcpFreeConfig()

void StreamTcpFreeConfig

(

bool

)

Definition at line 859 of file stream-tcp.c.

References SCMutexLock, and StreamTcpReassembleFree().

Referenced by StreamTcpUTDeinit().

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StreamTcpGetMemcap()

uint64_t StreamTcpGetMemcap

(

void

)

Return memcap value.

Parameters

memcap

memcap value

Definition at line 294 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 426 of file stream-tcp-reassemble.c.

Referenced by FrameJsonLogOneFrame().

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StreamTcpIncrMemuse()

void StreamTcpIncrMemuse

(

uint64_t

)

Definition at line 228 of file stream-tcp.c.

References SC_ATOMIC_ADD, SCLogDebug, and StreamTcpMemuseCounter().

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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 488 of file stream-tcp.c.

References TcpStreamCnf_::async_oneside, EngineModeIsIPS(), ExceptionPolicyMidstreamParse(), ExceptionPolicyParse(), FatalError, TcpStreamCnf_::flags, TcpStreamCnf_::midstream, TcpStreamCnf_::midstream_policy, ParseSizeStringU64(), TcpStreamCnf_::prealloc_sessions, TcpStreamCnf_::reassembly_memcap_policy, RunmodeIsUnittests(), SC_ATOMIC_GET, SC_ATOMIC_INIT, SC_ATOMIC_SET, SCConfGet(), SCConfGetBool(), SCConfGetInt(), SCConfGetNode(), SCLogDebug, SCLogError, SCLogWarning, TcpStreamCnf_::ssn_memcap_policy, stream_config, STREAMTCP_DEFAULT_MEMCAP, STREAMTCP_DEFAULT_PREALLOC, STREAMTCP_INIT_FLAG_BYPASS, STREAMTCP_INIT_FLAG_CHECKSUM_VALIDATION, STREAMTCP_INIT_FLAG_DROP_INVALID, STREAMTCP_INIT_FLAG_INLINE, TCP_STREAM_URGENT_DEFAULT, TCP_STREAM_URGENT_DROP, TCP_STREAM_URGENT_GAP, TCP_STREAM_URGENT_INLINE, TCP_STREAM_URGENT_OOB, TcpStreamCnf_::urgent_policy, and WarnInvalidConfEntry.

Referenced by PreRunInit(), and StreamTcpUTInit().

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StreamTcpInitMemuse()

void StreamTcpInitMemuse

(

void

)

Definition at line 223 of file stream-tcp.c.

References SC_ATOMIC_INIT.

Referenced by UtRunTests().

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StreamTcpInlineMode()

bool StreamTcpInlineMode

(

void

)

See if stream engine is operating in inline mode.

Return values

0	no
1	yes

Definition at line 7099 of file stream-tcp.c.

References TcpStreamCnf_::flags, stream_config, and STREAMTCP_INIT_FLAG_INLINE.

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

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StreamTcpMemuseCounter()

uint64_t StreamTcpMemuseCounter

(

void

)

Definition at line 254 of file stream-tcp.c.

References SC_ATOMIC_GET.

Referenced by StreamTcpDecrMemuse(), and StreamTcpIncrMemuse().

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StreamTcpPacket()

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

Definition at line 5542 of file stream-tcp.c.

References DEBUG_ASSERT_FLOW_LOCKED, Packet_::flow, Packet_::pcap_cnt, Flow_::protoctx, SCEnter, and SCLogDebug.

StreamTcpReassembleConfigEnableOverlapCheck()

void StreamTcpReassembleConfigEnableOverlapCheck

(

void

)

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

StreamTcpReassemblyMemcapGetExceptionPolicy()

enum ExceptionPolicy StreamTcpReassemblyMemcapGetExceptionPolicy

(

void

)

Definition at line 890 of file stream-tcp.c.

StreamTcpRegisterTests()

void StreamTcpRegisterTests

(

void

)

Definition at line 3405 of file stream-tcp.c.

References UtRegisterTest().

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StreamTcpSegmentForEach()

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

Definition at line 6946 of file stream-tcp.c.

References TcpSession_::client, cnt, TcpStreamCnf_::flags, Packet_::flow, TcpStream_::last_ack, PKT_IS_PSEUDOPKT, Flow_::protoctx, RB_FOREACH, TcpStream_::sb, TcpSegment::sbseg, SCLogDebug, TcpStream_::seg_tree, TcpSegment::seq, SEQ_GEQ, TcpSession_::server, stream_config, STREAM_DUMP_TOSERVER, StreamingBufferSegmentGetData(), and STREAMTCP_INIT_FLAG_INLINE.

Referenced by StreamSegmentForEach().

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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 7005 of file stream-tcp.c.

References TcpSession_::client, cnt, Packet_::flow, TcpSegment::pcap_hdr_storage, Flow_::protoctx, RB_MIN, TcpStream_::sb, TcpSegment::sbseg, SCLogDebug, SCTIME_CMP_LT, TcpStream_::seg_tree, TcpSession_::server, StreamingBufferSegmentGetData(), and TcpSegmentPcapHdrStorage_::ts.

Referenced by StreamSegmentForSession().

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StreamTcpSessionCleanup()

void StreamTcpSessionCleanup

(

TcpSession *

ssn

)

Session cleanup function. Does not free the ssn.

Parameters

ssn	tcp session

Definition at line 327 of file stream-tcp.c.

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

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

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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 351 of file stream-tcp.c.

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

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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 380 of file stream-tcp.c.

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

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StreamTcpSetMemcap()

int StreamTcpSetMemcap

(

uint64_t

size

)

Update memcap value.

Parameters

size	new memcap value

Definition at line 279 of file stream-tcp.c.

References SC_ATOMIC_GET, SC_ATOMIC_SET, and stream_config.

StreamTcpSsnMemcapGetExceptionPolicy()

enum ExceptionPolicy StreamTcpSsnMemcapGetExceptionPolicy

(

void

)

Definition at line 890 of file stream-tcp.c.

StreamTcpSsnStateAsString()

const char* StreamTcpSsnStateAsString

(

const TcpSession *

ssn

)

Definition at line 7153 of file stream-tcp.c.

References TcpSession_::state, and StreamTcpStateAsString().

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StreamTcpStateAsString()

const char* StreamTcpStateAsString

(

const enum

TcpState

)

Definition at line 7112 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().

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StreamTcpStreamCleanup()

void StreamTcpStreamCleanup

(

TcpStream *

stream

)

Definition at line 300 of file stream-tcp.c.

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

Referenced by StreamTcpSessionCleanup(), and StreamTcpUTClearStream().

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StreamTcpThreadDeinit()

TmEcode StreamTcpThreadDeinit	(	ThreadVars *	tv,
		void *	data
	)

Definition at line 6068 of file stream-tcp.c.

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

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StreamTcpThreadInit()

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

Definition at line 5981 of file stream-tcp.c.

References StreamTcpThread_::counter_tcp_active_sessions, StreamTcpThread_::counter_tcp_sessions, StreamTcpThread_::counter_tcp_ssn_from_cache, StreamTcpThread_::counter_tcp_ssn_from_pool, StreamTcpThread_::counter_tcp_ssn_memcap, StreamTcpThread_::counter_tcp_ssn_memcap_eps, ExceptionPolicySetStatsCounters(), SCCalloc, SCEnter, SCReturnInt, TcpStreamCnf_::ssn_memcap_policy, StreamTcpThread_::ssn_pool_id, StatsRegisterCounter(), stream_config, stream_memcap_eps_stats, StreamTcpThreadCacheEnable(), TM_ECODE_FAILED, tv, and unlikely.

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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 6674 of file stream-tcp.c.

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

TcpSessionPacketSsnReuse()

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

Definition at line 5931 of file stream-tcp.c.

References Packet_::proto.

TcpSessionSetReassemblyDepth()

void TcpSessionSetReassemblyDepth	(	TcpSession *	ssn,
		uint32_t	size
	)

Definition at line 7105 of file stream-tcp.c.

References TcpSession_::reassembly_depth.

Variable Documentation

stream_config

TcpStreamCnf stream_config

Definition at line 219 of file stream-tcp.c.

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