#include "util-pool-thread.h"
#include "util-streaming-buffer.h"

Include dependency graph for stream-tcp-private.h:

This graph shows which files directly or indirectly include this file:

Data Structures
struct	TcpStateQueue_

struct	StreamTcpSackRecord

struct	TcpSegmentPcapHdrStorage_

struct	TcpSegment

struct	TcpStream_

struct	TcpSession_

Macros
#define	STREAMTCP_QUEUE_FLAG_TS 0x01

#define	STREAMTCP_QUEUE_FLAG_WS 0x02

#define	STREAMTCP_QUEUE_FLAG_SACK 0x04

#define	TCPSEG_PKT_HDR_DEFAULT_SIZE 64

#define	TCP_SEG_LEN(seg) (seg)->payload_len

#define	TCP_SEG_OFFSET(seg) (seg)->sbseg.stream_offset

#define	SEG_SEQ_RIGHT_EDGE(seg) ((seg)->seq + TCP_SEG_LEN((seg)))

#define	STREAM_SEQ_RIGHT_EDGE(stream) (stream)->segs_right_edge

#define	STREAM_RIGHT_EDGE(stream) (STREAM_BASE_OFFSET((stream)) + (STREAM_SEQ_RIGHT_EDGE((stream)) - (stream)->base_seq))

#define	STREAM_HAS_SEEN_DATA(stream) StreamingBufferHasData(&(stream)->sb)

#define	STREAM_BASE_OFFSET(stream) ((stream)->sb.region.stream_offset)

#define	STREAM_APP_PROGRESS(stream) (STREAM_BASE_OFFSET((stream)) + (stream)->app_progress_rel)

#define	STREAM_RAW_PROGRESS(stream) (STREAM_BASE_OFFSET((stream)) + (stream)->raw_progress_rel)

#define	STREAM_LOG_PROGRESS(stream) (STREAM_BASE_OFFSET((stream)) + (stream)->log_progress_rel)

#define	STREAMTCP_FLAG_MIDSTREAM BIT_U32(0)

#define	STREAMTCP_FLAG_MIDSTREAM_ESTABLISHED BIT_U32(1)

#define	STREAMTCP_FLAG_MIDSTREAM_SYNACK BIT_U32(2)

#define	STREAMTCP_FLAG_TIMESTAMP BIT_U32(3)

#define	STREAMTCP_FLAG_SERVER_WSCALE BIT_U32(4)

#define	STREAMTCP_FLAG_CLOSED_BY_RST BIT_U32(5)

#define	STREAMTCP_FLAG_ASYNC BIT_U32(6)

#define	STREAMTCP_FLAG_4WHS BIT_U32(7)

#define	STREAMTCP_FLAG_DETECTION_EVASION_ATTEMPT BIT_U32(8)

#define	STREAMTCP_FLAG_CLIENT_SACKOK BIT_U32(9)

#define	STREAMTCP_FLAG_SACKOK BIT_U32(10)

#define	STREAMTCP_FLAG_LOSSY_BE_LIBERAL BIT_U32(11)

#define	STREAMTCP_FLAG_3WHS_CONFIRMED BIT_U32(12)

#define	STREAMTCP_FLAG_APP_LAYER_DISABLED BIT_U32(13)

#define	STREAMTCP_FLAG_BYPASS BIT_U32(14)

#define	STREAMTCP_FLAG_TCP_FAST_OPEN BIT_U32(15)

#define	STREAMTCP_FLAG_TFO_DATA_IGNORED BIT_U32(16)

#define	STREAMTCP_FLAG_ZWP_TS BIT_U32(17)

#define	STREAMTCP_FLAG_ZWP_TC BIT_U32(18)

#define	STREAMTCP_STREAM_FLAG_HAS_GAP BIT_U16(0)

#define	STREAMTCP_STREAM_FLAG_NOREASSEMBLY BIT_U16(1)

#define	STREAMTCP_STREAM_FLAG_KEEPALIVE BIT_U16(2)

#define	STREAMTCP_STREAM_FLAG_DEPTH_REACHED BIT_U16(3)

#define	STREAMTCP_STREAM_FLAG_TRIGGER_RAW BIT_U16(4)

#define	STREAMTCP_STREAM_FLAG_TIMESTAMP BIT_U16(5)

#define	STREAMTCP_STREAM_FLAG_ZERO_TIMESTAMP BIT_U16(6)

#define	STREAMTCP_STREAM_FLAG_APPPROTO_DETECTION_COMPLETED BIT_U16(7)

#define	STREAMTCP_STREAM_FLAG_APPPROTO_DETECTION_SKIPPED BIT_U16(8)

#define	STREAMTCP_STREAM_FLAG_NEW_RAW_DISABLED BIT_U16(9)

#define	STREAMTCP_STREAM_FLAG_DISABLE_RAW BIT_U16(10)

#define	STREAMTCP_STREAM_FLAG_RST_RECV BIT_U16(11)

#define	PAWS_24DAYS 2073600

#define	PKT_IS_IN_RIGHT_DIR(ssn, p)

#define	SEQ_EQ(a, b) ((int32_t)((a) - (b)) == 0)

#define	SEQ_LT(a, b) ((int32_t)((a) - (b)) < 0)

#define	SEQ_LEQ(a, b) ((int32_t)((a) - (b)) <= 0)

#define	SEQ_GT(a, b) ((int32_t)((a) - (b)) > 0)

#define	SEQ_GEQ(a, b) ((int32_t)((a) - (b)) >= 0)

#define	SEQ_MIN(a, b) (SEQ_LT((a), (b)) ? (a) : (b))

#define	SEQ_MAX(a, b) (SEQ_GT((a), (b)) ? (a) : (b))

#define	STREAMTCP_SET_RA_BASE_SEQ(stream, seq)

#define	StreamTcpSetEvent(p, e)

#define	StreamTcpSetStreamFlagAppProtoDetectionCompleted(stream) ((stream)->flags \|= STREAMTCP_STREAM_FLAG_APPPROTO_DETECTION_COMPLETED)

#define	StreamTcpIsSetStreamFlagAppProtoDetectionCompleted(stream) ((stream)->flags & STREAMTCP_STREAM_FLAG_APPPROTO_DETECTION_COMPLETED)

#define	StreamTcpResetStreamFlagAppProtoDetectionCompleted(stream) ((stream)->flags &= ~STREAMTCP_STREAM_FLAG_APPPROTO_DETECTION_COMPLETED);

#define	StreamTcpDisableAppLayerReassembly(ssn)

#define	STREAM_PKT_FLAG_RETRANSMISSION BIT_U16(0)

#define	STREAM_PKT_FLAG_SPURIOUS_RETRANSMISSION BIT_U16(1)

#define	STREAM_PKT_FLAG_STATE_UPDATE BIT_U16(2)

#define	STREAM_PKT_FLAG_KEEPALIVE BIT_U16(3)

#define	STREAM_PKT_FLAG_KEEPALIVEACK BIT_U16(4)

#define	STREAM_PKT_FLAG_WINDOWUPDATE BIT_U16(5)

#define	STREAM_PKT_FLAG_EVENTSET BIT_U16(6)

#define	STREAM_PKT_FLAG_DUP_ACK BIT_U16(7)

#define	STREAM_PKT_FLAG_DSACK BIT_U16(8)

#define	STREAM_PKT_FLAG_ACK_UNSEEN_DATA BIT_U16(9)

#define	STREAM_PKT_FLAG_TCP_PORT_REUSE BIT_U16(10)

#define	STREAM_PKT_FLAG_TCP_ZERO_WIN_PROBE BIT_U16(11)

#define	STREAM_PKT_FLAG_TCP_ZERO_WIN_PROBE_ACK BIT_U16(12)

#define	STREAM_PKT_FLAG_SET(p, f) (p)->l4.vars.tcp.stream_pkt_flags \|= (f)

Typedefs
typedef struct TcpStateQueue_	TcpStateQueue

typedef struct StreamTcpSackRecord	StreamTcpSackRecord

typedef struct TcpSegmentPcapHdrStorage_	TcpSegmentPcapHdrStorage

typedef struct TcpStream_	TcpStream

typedef struct TcpSession_	TcpSession

Enumerations
enum	TcpState { TCP_NONE = 0, TCP_SYN_SENT = 2, TCP_SYN_RECV = 3, TCP_ESTABLISHED = 4, TCP_FIN_WAIT1 = 5, TCP_FIN_WAIT2 = 6, TCP_TIME_WAIT = 7, TCP_LAST_ACK = 8, TCP_CLOSE_WAIT = 9, TCP_CLOSING = 10, TCP_CLOSED = 11 }

Functions
int	TcpSackCompare (struct StreamTcpSackRecord a, struct StreamTcpSackRecord b)

	RB_HEAD (TCPSACK, StreamTcpSackRecord)

	RB_PROTOTYPE (TCPSACK, StreamTcpSackRecord, rb, TcpSackCompare)

struct TcpSegment	__attribute__ ((__packed__)) TcpSegment
	DNP3 link header. More...

	RB_ENTRY (TcpSegment) __attribute__((__packed__)) rb

int	TcpSegmentCompare (struct TcpSegment a, struct TcpSegment b)
	compare function for the Segment tree More...

	RB_HEAD (TCPSEG, TcpSegment)

	RB_PROTOTYPE (TCPSEG, TcpSegment, rb, TcpSegmentCompare)

Variables
PoolThreadId	pool_id

uint16_t	payload_len

uint32_t	seq

StreamingBufferSegment	sbseg

TcpSegmentPcapHdrStorage *	pcap_hdr_storage

Detailed Description

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

Definition in file stream-tcp-private.h.

Macro Definition Documentation

◆ PAWS_24DAYS

#define PAWS_24DAYS 2073600

NOTE: flags field is 12 bits 24 days in seconds

Definition at line 248 of file stream-tcp-private.h.

◆ PKT_IS_IN_RIGHT_DIR

#define PKT_IS_IN_RIGHT_DIR	(	ssn,
		p
	)

Value:

                                            ((ssn)->flags & STREAMTCP_FLAG_MIDSTREAM_SYNACK ? \
                                            PKT_IS_TOSERVER(p) ? (p)->flowflags &= ~FLOW_PKT_TOSERVER \
                                            (p)->flowflags |= FLOW_PKT_TOCLIENT : (p)->flowflags &= ~FLOW_PKT_TOCLIENT \
                                            (p)->flowflags |= FLOW_PKT_TOSERVER : 0)

Definition at line 250 of file stream-tcp-private.h.

◆ SEG_SEQ_RIGHT_EDGE

#define SEG_SEQ_RIGHT_EDGE ( seg ) ((seg)->seq + TCP_SEG_LEN((seg)))

Definition at line 98 of file stream-tcp-private.h.

◆ SEQ_EQ

#define SEQ_EQ	(	a,
		b
	)	((int32_t)((a) - (b)) == 0)

Definition at line 257 of file stream-tcp-private.h.

◆ SEQ_GEQ

#define SEQ_GEQ	(	a,
		b
	)	((int32_t)((a) - (b)) >= 0)

Definition at line 261 of file stream-tcp-private.h.

◆ SEQ_GT

#define SEQ_GT	(	a,
		b
	)	((int32_t)((a) - (b)) > 0)

Definition at line 260 of file stream-tcp-private.h.

◆ SEQ_LEQ

#define SEQ_LEQ	(	a,
		b
	)	((int32_t)((a) - (b)) <= 0)

Definition at line 259 of file stream-tcp-private.h.

◆ SEQ_LT

#define SEQ_LT	(	a,
		b
	)	((int32_t)((a) - (b)) < 0)

Definition at line 258 of file stream-tcp-private.h.

◆ SEQ_MAX

#define SEQ_MAX	(	a,
		b
	)	(SEQ_GT((a), (b)) ? (a) : (b))

Definition at line 263 of file stream-tcp-private.h.

◆ SEQ_MIN

#define SEQ_MIN	(	a,
		b
	)	(SEQ_LT((a), (b)) ? (a) : (b))

Definition at line 262 of file stream-tcp-private.h.

◆ STREAM_APP_PROGRESS

#define STREAM_APP_PROGRESS ( stream ) (STREAM_BASE_OFFSET((stream)) + (stream)->app_progress_rel)

Definition at line 146 of file stream-tcp-private.h.

◆ STREAM_BASE_OFFSET

#define STREAM_BASE_OFFSET ( stream ) ((stream)->sb.region.stream_offset)

Definition at line 145 of file stream-tcp-private.h.

◆ STREAM_HAS_SEEN_DATA

#define STREAM_HAS_SEEN_DATA ( stream ) StreamingBufferHasData(&(stream)->sb)

Definition at line 105 of file stream-tcp-private.h.

◆ STREAM_LOG_PROGRESS

#define STREAM_LOG_PROGRESS ( stream ) (STREAM_BASE_OFFSET((stream)) + (stream)->log_progress_rel)

Definition at line 148 of file stream-tcp-private.h.

◆ STREAM_PKT_FLAG_ACK_UNSEEN_DATA

#define STREAM_PKT_FLAG_ACK_UNSEEN_DATA BIT_U16(9)

Definition at line 322 of file stream-tcp-private.h.

◆ STREAM_PKT_FLAG_DSACK

#define STREAM_PKT_FLAG_DSACK BIT_U16(8)

Definition at line 321 of file stream-tcp-private.h.

◆ STREAM_PKT_FLAG_DUP_ACK

#define STREAM_PKT_FLAG_DUP_ACK BIT_U16(7)

Definition at line 320 of file stream-tcp-private.h.

◆ STREAM_PKT_FLAG_EVENTSET

#define STREAM_PKT_FLAG_EVENTSET BIT_U16(6)

Definition at line 319 of file stream-tcp-private.h.

◆ STREAM_PKT_FLAG_KEEPALIVE

#define STREAM_PKT_FLAG_KEEPALIVE BIT_U16(3)

Definition at line 316 of file stream-tcp-private.h.

◆ STREAM_PKT_FLAG_KEEPALIVEACK

#define STREAM_PKT_FLAG_KEEPALIVEACK BIT_U16(4)

Definition at line 317 of file stream-tcp-private.h.

◆ STREAM_PKT_FLAG_RETRANSMISSION

#define STREAM_PKT_FLAG_RETRANSMISSION BIT_U16(0)

Definition at line 313 of file stream-tcp-private.h.

◆ STREAM_PKT_FLAG_SET

#define STREAM_PKT_FLAG_SET	(	p,
		f
	)	(p)->l4.vars.tcp.stream_pkt_flags \|= (f)

Definition at line 327 of file stream-tcp-private.h.

◆ STREAM_PKT_FLAG_SPURIOUS_RETRANSMISSION

#define STREAM_PKT_FLAG_SPURIOUS_RETRANSMISSION BIT_U16(1)

Definition at line 314 of file stream-tcp-private.h.

◆ STREAM_PKT_FLAG_STATE_UPDATE

#define STREAM_PKT_FLAG_STATE_UPDATE BIT_U16(2)

Definition at line 315 of file stream-tcp-private.h.

◆ STREAM_PKT_FLAG_TCP_PORT_REUSE

#define STREAM_PKT_FLAG_TCP_PORT_REUSE BIT_U16(10)

Definition at line 323 of file stream-tcp-private.h.

◆ STREAM_PKT_FLAG_TCP_ZERO_WIN_PROBE

#define STREAM_PKT_FLAG_TCP_ZERO_WIN_PROBE BIT_U16(11)

Definition at line 324 of file stream-tcp-private.h.

◆ STREAM_PKT_FLAG_TCP_ZERO_WIN_PROBE_ACK

#define STREAM_PKT_FLAG_TCP_ZERO_WIN_PROBE_ACK BIT_U16(12)

Definition at line 325 of file stream-tcp-private.h.

◆ STREAM_PKT_FLAG_WINDOWUPDATE

#define STREAM_PKT_FLAG_WINDOWUPDATE BIT_U16(5)

Definition at line 318 of file stream-tcp-private.h.

◆ STREAM_RAW_PROGRESS

#define STREAM_RAW_PROGRESS ( stream ) (STREAM_BASE_OFFSET((stream)) + (stream)->raw_progress_rel)

Definition at line 147 of file stream-tcp-private.h.

◆ STREAM_RIGHT_EDGE

#define STREAM_RIGHT_EDGE ( stream ) (STREAM_BASE_OFFSET((stream)) + (STREAM_SEQ_RIGHT_EDGE((stream)) - (stream)->base_seq))

Definition at line 103 of file stream-tcp-private.h.

◆ STREAM_SEQ_RIGHT_EDGE

#define STREAM_SEQ_RIGHT_EDGE ( stream ) (stream)->segs_right_edge

Definition at line 102 of file stream-tcp-private.h.

◆ STREAMTCP_FLAG_3WHS_CONFIRMED

#define STREAMTCP_FLAG_3WHS_CONFIRMED BIT_U32(12)

3WHS confirmed by server – if suri sees 3whs ACK but server doesn't (pkt is lost on the way to server), SYN/ACK is retransmitted. If server sends normal packet we assume 3whs to be completed. Only used for SYN/ACK resend event.

Definition at line 200 of file stream-tcp-private.h.

◆ STREAMTCP_FLAG_4WHS

#define STREAMTCP_FLAG_4WHS BIT_U32(7)

Flag to indicate we're dealing with 4WHS: SYN, SYN, SYN/ACK, ACK (http://www.breakingpointsystems.com/community/blog/tcp-portals-the-three-way-handshake-is-a-lie)

Definition at line 186 of file stream-tcp-private.h.

◆ STREAMTCP_FLAG_APP_LAYER_DISABLED

#define STREAMTCP_FLAG_APP_LAYER_DISABLED BIT_U32(13)

App Layer tracking/reassembly is disabled

Definition at line 202 of file stream-tcp-private.h.

◆ STREAMTCP_FLAG_ASYNC

#define STREAMTCP_FLAG_ASYNC BIT_U32(6)

Flag to indicate that the session is handling asynchronous stream.

Definition at line 183 of file stream-tcp-private.h.

◆ STREAMTCP_FLAG_BYPASS

#define STREAMTCP_FLAG_BYPASS BIT_U32(14)

Stream can be bypass

Definition at line 204 of file stream-tcp-private.h.

◆ STREAMTCP_FLAG_CLIENT_SACKOK

#define STREAMTCP_FLAG_CLIENT_SACKOK BIT_U32(9)

Flag to indicate the client (SYN pkt) permits SACK

Definition at line 191 of file stream-tcp-private.h.

◆ STREAMTCP_FLAG_CLOSED_BY_RST

#define STREAMTCP_FLAG_CLOSED_BY_RST BIT_U32(5)

Closed by RST

Definition at line 181 of file stream-tcp-private.h.

◆ STREAMTCP_FLAG_DETECTION_EVASION_ATTEMPT

#define STREAMTCP_FLAG_DETECTION_EVASION_ATTEMPT BIT_U32(8)

Flag to indicate that this session is possible trying to evade the detection (http://www.packetstan.com/2010/06/recently-ive-been-on-campaign-to-make.html)

Definition at line 189 of file stream-tcp-private.h.

◆ STREAMTCP_FLAG_LOSSY_BE_LIBERAL

#define STREAMTCP_FLAG_LOSSY_BE_LIBERAL BIT_U32(11)

Session is in "lossy" state, be liberal

Definition at line 195 of file stream-tcp-private.h.

◆ STREAMTCP_FLAG_MIDSTREAM

#define STREAMTCP_FLAG_MIDSTREAM BIT_U32(0)

Flag for mid stream session

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

◆ STREAMTCP_FLAG_MIDSTREAM_ESTABLISHED

#define STREAMTCP_FLAG_MIDSTREAM_ESTABLISHED BIT_U32(1)

Flag for mid stream established session

Definition at line 173 of file stream-tcp-private.h.

◆ STREAMTCP_FLAG_MIDSTREAM_SYNACK

#define STREAMTCP_FLAG_MIDSTREAM_SYNACK BIT_U32(2)

Flag for mid session when syn/ack is received

Definition at line 175 of file stream-tcp-private.h.

◆ STREAMTCP_FLAG_SACKOK

#define STREAMTCP_FLAG_SACKOK BIT_U32(10)

Flag to indicate both sides of the session permit SACK (SYN + SYN/ACK)

Definition at line 193 of file stream-tcp-private.h.

◆ STREAMTCP_FLAG_SERVER_WSCALE

#define STREAMTCP_FLAG_SERVER_WSCALE BIT_U32(4)

Server supports wscale (even though it can be 0)

Definition at line 179 of file stream-tcp-private.h.

◆ STREAMTCP_FLAG_TCP_FAST_OPEN

#define STREAMTCP_FLAG_TCP_FAST_OPEN BIT_U32(15)

SSN uses TCP Fast Open

Definition at line 206 of file stream-tcp-private.h.

◆ STREAMTCP_FLAG_TFO_DATA_IGNORED

#define STREAMTCP_FLAG_TFO_DATA_IGNORED BIT_U32(16)

SYN/ACK ignored the data while ACKing the SYN

Definition at line 208 of file stream-tcp-private.h.

◆ STREAMTCP_FLAG_TIMESTAMP

#define STREAMTCP_FLAG_TIMESTAMP BIT_U32(3)

Flag for TCP Timestamp option

Definition at line 177 of file stream-tcp-private.h.

◆ STREAMTCP_FLAG_ZWP_TC

#define STREAMTCP_FLAG_ZWP_TC BIT_U32(18)

Definition at line 211 of file stream-tcp-private.h.

◆ STREAMTCP_FLAG_ZWP_TS

#define STREAMTCP_FLAG_ZWP_TS BIT_U32(17)

Definition at line 210 of file stream-tcp-private.h.

◆ STREAMTCP_QUEUE_FLAG_SACK

#define STREAMTCP_QUEUE_FLAG_SACK 0x04

Definition at line 33 of file stream-tcp-private.h.

◆ STREAMTCP_QUEUE_FLAG_TS

#define STREAMTCP_QUEUE_FLAG_TS 0x01

Definition at line 31 of file stream-tcp-private.h.

◆ STREAMTCP_QUEUE_FLAG_WS

#define STREAMTCP_QUEUE_FLAG_WS 0x02

Definition at line 32 of file stream-tcp-private.h.

◆ STREAMTCP_SET_RA_BASE_SEQ

#define STREAMTCP_SET_RA_BASE_SEQ	(	stream,
		seq
	)

Value:

    { \
    do { \
        (stream)->base_seq = (seq) + 1;    \
    } while(0); \
}

Definition at line 265 of file stream-tcp-private.h.

◆ STREAMTCP_STREAM_FLAG_APPPROTO_DETECTION_COMPLETED

#define STREAMTCP_STREAM_FLAG_APPPROTO_DETECTION_COMPLETED BIT_U16(7)

App proto detection completed

Definition at line 233 of file stream-tcp-private.h.

◆ STREAMTCP_STREAM_FLAG_APPPROTO_DETECTION_SKIPPED

#define STREAMTCP_STREAM_FLAG_APPPROTO_DETECTION_SKIPPED BIT_U16(8)

App proto detection skipped

Definition at line 235 of file stream-tcp-private.h.

◆ STREAMTCP_STREAM_FLAG_DEPTH_REACHED

#define STREAMTCP_STREAM_FLAG_DEPTH_REACHED BIT_U16(3)

Stream has reached it's reassembly depth, all further packets are ignored

Definition at line 224 of file stream-tcp-private.h.

◆ STREAMTCP_STREAM_FLAG_DISABLE_RAW

#define STREAMTCP_STREAM_FLAG_DISABLE_RAW BIT_U16(10)

Raw reassembly disabled completely

Definition at line 239 of file stream-tcp-private.h.

◆ STREAMTCP_STREAM_FLAG_HAS_GAP

#define STREAMTCP_STREAM_FLAG_HAS_GAP BIT_U16(0)

Flag to indicate that we have seen gap on the stream

Definition at line 218 of file stream-tcp-private.h.

◆ STREAMTCP_STREAM_FLAG_KEEPALIVE

#define STREAMTCP_STREAM_FLAG_KEEPALIVE BIT_U16(2)

we received a keep alive

Definition at line 222 of file stream-tcp-private.h.

◆ STREAMTCP_STREAM_FLAG_NEW_RAW_DISABLED

#define STREAMTCP_STREAM_FLAG_NEW_RAW_DISABLED BIT_U16(9)

Raw reassembly disabled for new segments

Definition at line 237 of file stream-tcp-private.h.

◆ STREAMTCP_STREAM_FLAG_NOREASSEMBLY

#define STREAMTCP_STREAM_FLAG_NOREASSEMBLY BIT_U16(1)

Flag to avoid stream reassembly/app layer inspection for the stream

Definition at line 220 of file stream-tcp-private.h.

◆ STREAMTCP_STREAM_FLAG_RST_RECV

#define STREAMTCP_STREAM_FLAG_RST_RECV BIT_U16(11)

Definition at line 241 of file stream-tcp-private.h.

◆ STREAMTCP_STREAM_FLAG_TIMESTAMP

#define STREAMTCP_STREAM_FLAG_TIMESTAMP BIT_U16(5)

Stream supports TIMESTAMP – used to set ssn STREAMTCP_FLAG_TIMESTAMP flag.

Definition at line 229 of file stream-tcp-private.h.

◆ STREAMTCP_STREAM_FLAG_TRIGGER_RAW

#define STREAMTCP_STREAM_FLAG_TRIGGER_RAW BIT_U16(4)

Trigger reassembly next time we need 'raw'

Definition at line 226 of file stream-tcp-private.h.

◆ STREAMTCP_STREAM_FLAG_ZERO_TIMESTAMP

#define STREAMTCP_STREAM_FLAG_ZERO_TIMESTAMP BIT_U16(6)

Flag to indicate the zero value of timestamp

Definition at line 231 of file stream-tcp-private.h.

◆ StreamTcpDisableAppLayerReassembly

#define StreamTcpDisableAppLayerReassembly ( ssn )

Value:

        do { \
        SCLogDebug("setting STREAMTCP_FLAG_APP_LAYER_DISABLED on ssn %p", ssn); \
        ((ssn)->flags |= STREAMTCP_FLAG_APP_LAYER_DISABLED); \
    } while (0);

Definition at line 308 of file stream-tcp-private.h.

◆ StreamTcpIsSetStreamFlagAppProtoDetectionCompleted

#define StreamTcpIsSetStreamFlagAppProtoDetectionCompleted ( stream ) ((stream)->flags & STREAMTCP_STREAM_FLAG_APPPROTO_DETECTION_COMPLETED)

Definition at line 304 of file stream-tcp-private.h.

◆ StreamTcpResetStreamFlagAppProtoDetectionCompleted

#define StreamTcpResetStreamFlagAppProtoDetectionCompleted ( stream ) ((stream)->flags &= ~STREAMTCP_STREAM_FLAG_APPPROTO_DETECTION_COMPLETED);

Definition at line 306 of file stream-tcp-private.h.

◆ StreamTcpSetEvent

#define StreamTcpSetEvent	(	p,
		e
	)

Value:

    {                                                                                              \
        if ((p)->flags & PKT_STREAM_NO_EVENTS) {                                                   \
            SCLogDebug("not setting event %d on pkt %p (%" PRIu64 "), "                            \
                       "stream in known bad condition",                                            \
                    (e), p, (p)->pcap_cnt);                                                        \
        } else {                                                                                   \
            SCLogDebug("setting event %d on pkt %p (%" PRIu64 ")", (e), p, (p)->pcap_cnt);         \
            ENGINE_SET_EVENT((p), (e));                                                            \
            p->l4.vars.tcp.stream_pkt_flags |= STREAM_PKT_FLAG_EVENTSET;                           \
        }                                                                                          \
    }

Definition at line 271 of file stream-tcp-private.h.

◆ StreamTcpSetStreamFlagAppProtoDetectionCompleted

#define StreamTcpSetStreamFlagAppProtoDetectionCompleted ( stream ) ((stream)->flags |= STREAMTCP_STREAM_FLAG_APPPROTO_DETECTION_COMPLETED)

Definition at line 302 of file stream-tcp-private.h.

◆ TCP_SEG_LEN

#define TCP_SEG_LEN ( seg ) (seg)->payload_len

Definition at line 95 of file stream-tcp-private.h.

◆ TCP_SEG_OFFSET

#define TCP_SEG_OFFSET ( seg ) (seg)->sbseg.stream_offset

Definition at line 96 of file stream-tcp-private.h.

◆ TCPSEG_PKT_HDR_DEFAULT_SIZE

#define TCPSEG_PKT_HDR_DEFAULT_SIZE 64

Definition at line 59 of file stream-tcp-private.h.

Typedef Documentation

◆ StreamTcpSackRecord

typedef struct StreamTcpSackRecord StreamTcpSackRecord

◆ TcpSegmentPcapHdrStorage

typedef struct TcpSegmentPcapHdrStorage_ TcpSegmentPcapHdrStorage

◆ TcpSession

typedef struct TcpSession_ TcpSession

◆ TcpStateQueue

typedef struct TcpStateQueue_ TcpStateQueue

Tracking SYNs and SYN/ACKs

◆ TcpStream

typedef struct TcpStream_ TcpStream

Enumeration Type Documentation

◆ TcpState

enum TcpState

Enumerator
TCP_NONE
TCP_SYN_SENT
TCP_SYN_RECV
TCP_ESTABLISHED
TCP_FIN_WAIT1
TCP_FIN_WAIT2
TCP_TIME_WAIT
TCP_LAST_ACK
TCP_CLOSE_WAIT
TCP_CLOSING
TCP_CLOSED

Definition at line 150 of file stream-tcp-private.h.

Function Documentation

◆ RB_ENTRY()

__attribute__::RB_ENTRY ( TcpSegment )

◆ RB_HEAD() [1/2]

RB_HEAD	(	TCPSACK	,
		StreamTcpSackRecord
	)

◆ RB_HEAD() [2/2]

RB_HEAD	(	TCPSEG	,
		TcpSegment
	)

◆ RB_PROTOTYPE() [1/2]

RB_PROTOTYPE	(	TCPSACK	,
		StreamTcpSackRecord	,
		rb	,
		TcpSackCompare
	)

◆ RB_PROTOTYPE() [2/2]

RB_PROTOTYPE	(	TCPSEG	,
		TcpSegment	,
		rb	,
		TcpSegmentCompare
	)

◆ TcpSackCompare()

int TcpSackCompare	(	struct StreamTcpSackRecord *	a,
		struct StreamTcpSackRecord *	b
	)

Definition at line 34 of file stream-tcp-sack.c.

References StreamTcpSackRecord::le, StreamTcpSackRecord::re, SEQ_EQ, SEQ_GT, and SEQ_LT.

◆ TcpSegmentCompare()

int TcpSegmentCompare	(	struct TcpSegment *	a,
		struct TcpSegment *	b
	)

compare function for the Segment tree

Main sort point is the sequence number. When sequence numbers are equal compare payload_len as well. This way the tree is sorted by seq, and in case of duplicate seqs we are sorted small to large.

Definition at line 51 of file stream-tcp-list.c.

References TcpSegment::payload_len, TcpSegment::seq, SEQ_GT, and SEQ_LT.

Variable Documentation

◆ payload_len

uint16_t payload_len

actual size of the payload

Definition at line 1 of file stream-tcp-private.h.

Referenced by DetectBase64DecodeDoMatch(), DetectByteExtractDoMatch(), DetectBytejumpDoMatch(), DetectByteMathDoMatch(), DetectBytetestDoMatch(), DetectPcrePayloadMatch(), StreamTcpCreateTestPacket(), UTHBuildPacket(), UTHBuildPacketIPV6Real(), UTHBuildPacketIPV6SrcDst(), UTHBuildPacketReal(), UTHBuildPacketSrcDst(), and UTHBuildPacketSrcDstPorts().

◆ pcap_hdr_storage

TcpSegmentPcapHdrStorage* pcap_hdr_storage

Definition at line 5 of file stream-tcp-private.h.

◆ pool_id

PoolThreadId pool_id

Definition at line 0 of file stream-tcp-private.h.

Referenced by StreamTcpSessionClear().

◆ sbseg

StreamingBufferSegment sbseg

Definition at line 4 of file stream-tcp-private.h.

◆ seq

uint32_t seq

Definition at line 2 of file stream-tcp-private.h.

Referenced by StreamTcpUTAddPayload(), StreamTcpUTAddSegmentWithByte(), and StreamTcpUTAddSegmentWithPayload().

Data Structures

Macros

Typedefs

Enumerations

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ PAWS_24DAYS

◆ PKT_IS_IN_RIGHT_DIR

◆ SEG_SEQ_RIGHT_EDGE

◆ SEQ_EQ

◆ SEQ_GEQ

◆ SEQ_GT

◆ SEQ_LEQ

◆ SEQ_LT

◆ SEQ_MAX

◆ SEQ_MIN

◆ STREAM_APP_PROGRESS

◆ STREAM_BASE_OFFSET

◆ STREAM_HAS_SEEN_DATA

◆ STREAM_LOG_PROGRESS

◆ STREAM_PKT_FLAG_ACK_UNSEEN_DATA

◆ STREAM_PKT_FLAG_DSACK

◆ STREAM_PKT_FLAG_DUP_ACK

◆ STREAM_PKT_FLAG_EVENTSET

◆ STREAM_PKT_FLAG_KEEPALIVE

◆ STREAM_PKT_FLAG_KEEPALIVEACK

◆ STREAM_PKT_FLAG_RETRANSMISSION

◆ STREAM_PKT_FLAG_SET

◆ STREAM_PKT_FLAG_SPURIOUS_RETRANSMISSION

◆ STREAM_PKT_FLAG_STATE_UPDATE

◆ STREAM_PKT_FLAG_TCP_PORT_REUSE

◆ STREAM_PKT_FLAG_TCP_ZERO_WIN_PROBE

◆ STREAM_PKT_FLAG_TCP_ZERO_WIN_PROBE_ACK

◆ STREAM_PKT_FLAG_WINDOWUPDATE

◆ STREAM_RAW_PROGRESS

◆ STREAM_RIGHT_EDGE

◆ STREAM_SEQ_RIGHT_EDGE

◆ STREAMTCP_FLAG_3WHS_CONFIRMED

◆ STREAMTCP_FLAG_4WHS

◆ STREAMTCP_FLAG_APP_LAYER_DISABLED

◆ STREAMTCP_FLAG_ASYNC

◆ STREAMTCP_FLAG_BYPASS

◆ STREAMTCP_FLAG_CLIENT_SACKOK

◆ STREAMTCP_FLAG_CLOSED_BY_RST

◆ STREAMTCP_FLAG_DETECTION_EVASION_ATTEMPT

◆ STREAMTCP_FLAG_LOSSY_BE_LIBERAL

◆ STREAMTCP_FLAG_MIDSTREAM

◆ STREAMTCP_FLAG_MIDSTREAM_ESTABLISHED

◆ STREAMTCP_FLAG_MIDSTREAM_SYNACK

◆ STREAMTCP_FLAG_SACKOK

◆ STREAMTCP_FLAG_SERVER_WSCALE

◆ STREAMTCP_FLAG_TCP_FAST_OPEN

◆ STREAMTCP_FLAG_TFO_DATA_IGNORED

◆ STREAMTCP_FLAG_TIMESTAMP

◆ STREAMTCP_FLAG_ZWP_TC

◆ STREAMTCP_FLAG_ZWP_TS

◆ STREAMTCP_QUEUE_FLAG_SACK

◆ STREAMTCP_QUEUE_FLAG_TS

◆ STREAMTCP_QUEUE_FLAG_WS

◆ STREAMTCP_SET_RA_BASE_SEQ

◆ STREAMTCP_STREAM_FLAG_APPPROTO_DETECTION_COMPLETED

◆ STREAMTCP_STREAM_FLAG_APPPROTO_DETECTION_SKIPPED

◆ STREAMTCP_STREAM_FLAG_DEPTH_REACHED

◆ STREAMTCP_STREAM_FLAG_DISABLE_RAW

◆ STREAMTCP_STREAM_FLAG_HAS_GAP

◆ STREAMTCP_STREAM_FLAG_KEEPALIVE

◆ STREAMTCP_STREAM_FLAG_NEW_RAW_DISABLED

◆ STREAMTCP_STREAM_FLAG_NOREASSEMBLY

◆ STREAMTCP_STREAM_FLAG_RST_RECV

◆ STREAMTCP_STREAM_FLAG_TIMESTAMP

◆ STREAMTCP_STREAM_FLAG_TRIGGER_RAW

◆ STREAMTCP_STREAM_FLAG_ZERO_TIMESTAMP

◆ StreamTcpDisableAppLayerReassembly

◆ StreamTcpIsSetStreamFlagAppProtoDetectionCompleted

◆ StreamTcpResetStreamFlagAppProtoDetectionCompleted

◆ StreamTcpSetEvent

◆ StreamTcpSetStreamFlagAppProtoDetectionCompleted

◆ TCP_SEG_LEN