A Discrete-Event Network Simulator
API
tcp-veno.h
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26 
27 #ifndef TCPVENO_H
28 #define TCPVENO_H
29 
30 #include "tcp-congestion-ops.h"
31 
32 namespace ns3 {
33 
34 class TcpSocketState;
35 
71 class TcpVeno : public TcpNewReno
72 {
73 public:
78  static TypeId GetTypeId (void);
79 
83  TcpVeno (void);
84 
89  TcpVeno (const TcpVeno& sock);
90  virtual ~TcpVeno (void);
91 
92  virtual std::string GetName () const;
93 
109  virtual void PktsAcked (Ptr<TcpSocketState> tcb, uint32_t segmentsAcked,
110  const Time& rtt);
111 
120  virtual void CongestionStateSet (Ptr<TcpSocketState> tcb,
121  const TcpSocketState::TcpCongState_t newState);
122 
129  virtual void IncreaseWindow (Ptr<TcpSocketState> tcb, uint32_t segmentsAcked);
130 
139  virtual uint32_t GetSsThresh (Ptr<const TcpSocketState> tcb,
140  uint32_t bytesInFlight);
141 
142  virtual Ptr<TcpCongestionOps> Fork ();
143 
144 protected:
145 private:
156  void EnableVeno ();
157 
161  void DisableVeno ();
162 
163 private:
166  uint32_t m_cntRtt;
168  uint32_t m_diff;
169  bool m_inc;
170  uint32_t m_ackCnt;
171  uint32_t m_beta;
172 };
173 
174 } // namespace ns3
175 
176 #endif // TCPVENO_H
The NewReno implementation.
TcpCongState_t
Definition of the Congestion state machine.
An implementation of TCP Veno.
Definition: tcp-veno.h:72
virtual uint32_t GetSsThresh(Ptr< const TcpSocketState > tcb, uint32_t bytesInFlight)
Get slow start threshold during Veno multiplicative-decrease phase.
Definition: tcp-veno.cc:242
bool m_inc
If true, cwnd needs to be incremented.
Definition: tcp-veno.h:169
virtual Ptr< TcpCongestionOps > Fork()
Copy the congestion control algorithm across sockets.
Definition: tcp-veno.cc:86
virtual void CongestionStateSet(Ptr< TcpSocketState > tcb, const TcpSocketState::TcpCongState_t newState)
Enable/disable Veno depending on the congestion state.
Definition: tcp-veno.cc:132
uint32_t m_cntRtt
Number of RTT measurements during last RTT.
Definition: tcp-veno.h:166
virtual void IncreaseWindow(Ptr< TcpSocketState > tcb, uint32_t segmentsAcked)
Adjust cwnd following Veno additive increase algorithm.
Definition: tcp-veno.cc:149
TcpVeno(void)
Create an unbound tcp socket.
Definition: tcp-veno.cc:52
void EnableVeno()
Enable Veno algorithm to start Veno sampling.
Definition: tcp-veno.cc:115
virtual void PktsAcked(Ptr< TcpSocketState > tcb, uint32_t segmentsAcked, const Time &rtt)
Perform RTT sampling needed to execute Veno algorithm.
Definition: tcp-veno.cc:92
Time m_minRtt
Minimum of RTTs measured within last RTT.
Definition: tcp-veno.h:165
bool m_doingVenoNow
If true, do Veno for this RTT.
Definition: tcp-veno.h:167
uint32_t m_ackCnt
Number of received ACK.
Definition: tcp-veno.h:170
uint32_t m_beta
Threshold for congestion detection.
Definition: tcp-veno.h:171
void DisableVeno()
Turn off Veno.
Definition: tcp-veno.cc:124
static TypeId GetTypeId(void)
Get the type ID.
Definition: tcp-veno.cc:38
uint32_t m_diff
Difference between expected and actual throughput.
Definition: tcp-veno.h:168
Time m_baseRtt
Minimum of all RTT measurements seen during connection.
Definition: tcp-veno.h:164
virtual ~TcpVeno(void)
Definition: tcp-veno.cc:80
virtual std::string GetName() const
Get the name of the congestion control algorithm.
Definition: tcp-veno.cc:236
Simulation virtual time values and global simulation resolution.
Definition: nstime.h:103
a unique identifier for an interface.
Definition: type-id.h:59
Every class exported by the ns3 library is enclosed in the ns3 namespace.