/usr/include/ns3.26/ns3/tcp-highspeed.h is in libns3-dev 3.26+dfsg-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 | /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
* Copyright (c) 2014 Natale Patriciello, <natale.patriciello@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation;
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifndef TCPHIGHSPEED_H
#define TCPHIGHSPEED_H
#include "ns3/tcp-congestion-ops.h"
namespace ns3 {
/**
* \ingroup congestionOps
*
* \brief An implementation of TCP HighSpeed
*
* TCP HighSpeed is designed for high-capacity channels or, in general, for
* TCP connections with large congestion windows.
* Conceptually, with respect to the standard TCP, HighSpeed makes the
* cWnd grow faster during the probing phases and accelerates the
* cWnd recovery from losses.
* This behavior is executed only when the window grows beyond a
* certain threshold, which allows TCP Highspeed to be friendly with standard
* TCP in environments with heavy congestion, without introducing new dangers
* of congestion collapse.
* At the core of TCP HighSpeed there are two functions, a(w) and b(w), which respectively
* specify the cWnd growth addendum and the cWnd reduction factor when
* given an actual cWnd value w.
*
* More information: http://dl.acm.org/citation.cfm?id=2756518
*/
class TcpHighSpeed : public TcpNewReno
{
public:
/**
* \brief Get the type ID.
* \return the object TypeId
*/
static TypeId GetTypeId (void);
/**
* Create an unbound tcp socket.
*/
TcpHighSpeed (void);
/**
* \brief Copy constructor
* \param sock the object to copy
*/
TcpHighSpeed (const TcpHighSpeed& sock);
virtual ~TcpHighSpeed (void);
virtual std::string GetName () const;
virtual uint32_t GetSsThresh (Ptr<const TcpSocketState> tcb,
uint32_t bytesInFlight);
virtual Ptr<TcpCongestionOps> Fork ();
/**
* \brief Lookup table for the coefficent a (from RFC 3649)
*
* \param w Window value (in packets)
*
* \return the coefficent a
*/
static uint32_t TableLookupA (uint32_t w);
/**
* \brief Lookup table for the coefficent b (from RFC 3649)
*
* \param w Window value (in packets)
*
* \return the coefficent b
*/
static double TableLookupB (uint32_t w);
protected:
virtual void CongestionAvoidance (Ptr<TcpSocketState> tcb, uint32_t segmentsAcked);
private:
uint32_t m_ackCnt; //!< Number of received ACK, corrected with the coefficent a
};
} // namespace ns3
#endif // TCPHIGHSPEED_H
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