inet::tcp::TCPWestwoodStateVariables Class Reference

State variables for TCPWestwood. More...

#include <TCPWestwood.h>

Inheritance diagram for inet::tcp::TCPWestwoodStateVariables:

Public Member Functions
	TCPWestwoodStateVariables ()
	~TCPWestwoodStateVariables ()
virtual std::string	info () const override
virtual std::string	detailedInfo () const override
Public Member Functions inherited from inet::tcp::TCPBaseAlgStateVariables
	TCPBaseAlgStateVariables ()
Public Member Functions inherited from inet::tcp::TCPStateVariables
	TCPStateVariables ()

Public Attributes
uint32	ssthresh
	slow start threshold More...
simtime_t	w_RTTmin
double	w_a
simtime_t	w_lastAckTime
double	w_bwe
double	w_sample_bwe
TCPSegmentTransmitInfoList	regions
Public Attributes inherited from inet::tcp::TCPBaseAlgStateVariables
int	rexmit_count
	retransmit count More...
simtime_t	rexmit_timeout
	current retransmission timeout (aka RTO) More...
uint	persist_factor
	persist factor More...
simtime_t	persist_timeout
	current persist timeout More...
uint32	snd_cwnd
	congestion window More...
uint32	rtseq
	round-trip time measurements More...
simtime_t	rtseq_sendtime
	time when rtseq was sent (0 if RTT measurement is not running) More...
simtime_t	srtt
	round-trip time estimation (Jacobson's algorithm) More...
simtime_t	rttvar
	variance of round-trip time More...
uint32	numRtos
	number of RTOs More...
uint32	recover
	RFC 3782 variables. More...
bool	firstPartialACK
	first partial acknowledgement (RFC 3782) More...
Public Attributes inherited from inet::tcp::TCPStateVariables
bool	active
bool	fork
uint32	snd_mss
uint32	snd_una
uint32	snd_nxt
uint32	snd_max
uint32	snd_wnd
uint32	snd_up
uint32	snd_wl1
uint32	snd_wl2
uint32	iss
uint32	rcv_nxt
uint32	rcv_wnd
uint32	rcv_up
uint32	irs
uint32	rcv_adv
int	syn_rexmit_count
simtime_t	syn_rexmit_timeout
bool	fin_ack_rcvd
bool	send_fin
uint32	snd_fin_seq
bool	fin_rcvd
uint32	rcv_fin_seq
uint32	sentBytes
bool	nagle_enabled
bool	delayed_acks_enabled
bool	limited_transmit_enabled
bool	increased_IW_enabled
uint32	full_sized_segment_counter
bool	ack_now
bool	afterRto
bool	ws_support
bool	ws_enabled
int	ws_manual_scale
bool	snd_ws
bool	rcv_ws
uint	rcv_wnd_scale
uint	snd_wnd_scale
bool	ts_support
bool	ts_enabled
bool	snd_initial_ts
bool	rcv_initial_ts
uint32	ts_recent
uint32	last_ack_sent
simtime_t	time_last_data_sent
bool	sack_support
bool	sack_enabled
bool	snd_sack_perm
bool	rcv_sack_perm
uint32	start_seqno
uint32	end_seqno
bool	snd_sack
bool	snd_dsack
SackList	sacks_array
uint32	highRxt
uint32	pipe
uint32	recoveryPoint
uint32	sackedBytes
uint32	sackedBytes_old
bool	lossRecovery
uint32	sendQueueLimit
bool	queueUpdate
uint32	dupacks
uint32	snd_sacks
uint32	rcv_sacks
uint32	rcv_oooseg
uint32	rcv_naseg
uint32	maxRcvBuffer
uint32	usedRcvBuffer
uint32	freeRcvBuffer
uint32	tcpRcvQueueDrops

Detailed Description

State variables for TCPWestwood.

Constructor & Destructor Documentation

inet::tcp::TCPWestwoodStateVariables::TCPWestwoodStateVariables

(

)

{
    ssthresh = 65535;
    w_RTTmin = SIMTIME_MAX;
    w_a = 1;
    w_lastAckTime = 0;
    w_bwe = 0;
    w_sample_bwe = 0;
}

inet::tcp::TCPWestwoodStateVariables::~TCPWestwoodStateVariables

(

)

{
}

Member Function Documentation

std::string inet::tcp::TCPWestwoodStateVariables::detailedInfo ( ) const

overridevirtual

Reimplemented from inet::tcp::TCPBaseAlgStateVariables.

{
    std::stringstream out;
    out << TCPBaseAlgStateVariables::detailedInfo();
    out << "ssthresh = " << ssthresh << "\n";
    out << "w_RTTmin = " << w_RTTmin << "\n";
    return out.str();
}

std::string inet::tcp::TCPWestwoodStateVariables::info ( ) const

overridevirtual

Reimplemented from inet::tcp::TCPBaseAlgStateVariables.

{
    std::stringstream out;
    out << TCPBaseAlgStateVariables::info();
    out << " ssthresh=" << ssthresh;
    return out.str();
}

Member Data Documentation

TCPSegmentTransmitInfoList inet::tcp::TCPWestwoodStateVariables::regions

Referenced by inet::tcp::TCPWestwood::dataSent(), inet::tcp::TCPWestwood::receivedDataAck(), and inet::tcp::TCPWestwood::segmentRetransmitted().

uint32 inet::tcp::TCPWestwoodStateVariables::ssthresh

slow start threshold

Referenced by detailedInfo(), info(), inet::tcp::TCPWestwood::processRexmitTimer(), inet::tcp::TCPWestwood::recalculateSlowStartThreshold(), inet::tcp::TCPWestwood::receivedDataAck(), inet::tcp::TCPWestwood::receivedDuplicateAck(), and TCPWestwoodStateVariables().

double inet::tcp::TCPWestwoodStateVariables::w_a

Referenced by inet::tcp::TCPWestwood::processRexmitTimer(), inet::tcp::TCPWestwood::recalculateSlowStartThreshold(), inet::tcp::TCPWestwood::receivedDuplicateAck(), and TCPWestwoodStateVariables().

double inet::tcp::TCPWestwoodStateVariables::w_bwe

Referenced by inet::tcp::TCPWestwood::recalculateBWE(), inet::tcp::TCPWestwood::recalculateSlowStartThreshold(), and TCPWestwoodStateVariables().

simtime_t inet::tcp::TCPWestwoodStateVariables::w_lastAckTime

Referenced by inet::tcp::TCPWestwood::recalculateBWE(), and TCPWestwoodStateVariables().

simtime_t inet::tcp::TCPWestwoodStateVariables::w_RTTmin

Referenced by detailedInfo(), inet::tcp::TCPWestwood::recalculateSlowStartThreshold(), inet::tcp::TCPWestwood::receivedDataAck(), and TCPWestwoodStateVariables().

double inet::tcp::TCPWestwoodStateVariables::w_sample_bwe

Referenced by inet::tcp::TCPWestwood::recalculateBWE(), and TCPWestwoodStateVariables().

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The documentation for this class was generated from the following files:

• TCPWestwood.h
• TCPWestwood.cc