A Discrete-Event Network Simulator
API
tcp-bic.h
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1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2014 Natale Patriciello <natale.patriciello@gmail.com>
4  *
5  * This program is free software; you can redistribute it and/or modify
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19 
20 #ifndef TCPBIC_H
21 #define TCPBIC_H
22 
23 #include "ns3/tcp-congestion-ops.h"
24 #include "ns3/tcp-recovery-ops.h"
25 
28 
29 namespace ns3 {
30 
81 class TcpBic : public TcpCongestionOps
82 {
83 public:
88  static TypeId GetTypeId (void);
89 
93  TcpBic ();
94 
99  TcpBic (const TcpBic &sock);
100 
101  virtual std::string GetName () const;
102  virtual void IncreaseWindow (Ptr<TcpSocketState> tcb,
103  uint32_t segmentsAcked);
104  virtual uint32_t GetSsThresh (Ptr<const TcpSocketState> tcb,
105  uint32_t bytesInFlight);
106 
107  virtual Ptr<TcpCongestionOps> Fork ();
108 
109 protected:
115  virtual uint32_t Update (Ptr<TcpSocketState> tcb);
116 
117 private:
122  friend class ::TcpBicIncrementTest;
127  friend class ::TcpBicDecrementTest;
128 
129  // User parameters
131  double m_beta;
132  uint32_t m_maxIncr;
133  uint32_t m_lowWnd;
134  uint32_t m_smoothPart;
135 
136  // Bic parameters
137  uint32_t m_cWndCnt;
138  uint32_t m_lastMaxCwnd;
139  uint32_t m_lastCwnd;
141  uint8_t m_b;
142 };
143 
144 } // namespace ns3
145 #endif // TCPBIC_H
BIC congestion control algorithm.
Definition: tcp-bic.h:81
Simulation virtual time values and global simulation resolution.
Definition: nstime.h:102
Time m_epochStart
Beginning of an epoch.
Definition: tcp-bic.h:140
bool m_fastConvergence
Enable or disable fast convergence algorithm.
Definition: tcp-bic.h:130
uint32_t m_lastMaxCwnd
Last maximum cWnd.
Definition: tcp-bic.h:138
virtual std::string GetName() const
Get the name of the congestion control algorithm.
Definition: tcp-bic.cc:233
uint32_t m_lowWnd
Lower bound on congestion window.
Definition: tcp-bic.h:133
static TypeId GetTypeId(void)
Get the type ID.
Definition: tcp-bic.cc:29
uint32_t m_maxIncr
Maximum window increment.
Definition: tcp-bic.h:132
virtual uint32_t GetSsThresh(Ptr< const TcpSocketState > tcb, uint32_t bytesInFlight)
Get the slow start threshold after a loss event.
Definition: tcp-bic.cc:239
virtual uint32_t Update(Ptr< TcpSocketState > tcb)
Bic window update after a new ack received.
Definition: tcp-bic.cc:134
uint32_t m_cWndCnt
cWnd integer-to-float counter
Definition: tcp-bic.h:137
Testing the congestion avoidance increment on TcpBic.
Definition: tcp-bic-test.cc:36
uint32_t m_smoothPart
Number of RTT needed to reach Wmax from Wmax-B.
Definition: tcp-bic.h:134
virtual Ptr< TcpCongestionOps > Fork()
Copy the congestion control algorithm across socket.
Definition: tcp-bic.cc:277
TcpBic()
Constructor.
Definition: tcp-bic.cc:68
uint32_t m_lastCwnd
Last cWnd.
Definition: tcp-bic.h:139
Every class exported by the ns3 library is enclosed in the ns3 namespace.
double m_beta
Beta for cubic multiplicative increase.
Definition: tcp-bic.h:131
Congestion control abstract class.
uint8_t m_b
Binary search coefficient.
Definition: tcp-bic.h:141
Testing the congestion avoidance decrement on TcpBic.
virtual void IncreaseWindow(Ptr< TcpSocketState > tcb, uint32_t segmentsAcked)
Congestion avoidance algorithm implementation.
Definition: tcp-bic.cc:96
a unique identifier for an interface.
Definition: type-id.h:58