TCP-LP (Low Priority) congestion control algorithm. More...
#include "tcp-lp.h"
Public Member Functions | |
TcpLp () | |
Creates an unbound tcp socket. | |
TcpLp (const TcpLp &sock) | |
Copy constructor. | |
~TcpLp () override | |
Ptr< TcpCongestionOps > | Fork () override |
Copy the congestion control algorithm across sockets. | |
std::string | GetName () const override |
Get the name of the congestion control algorithm. | |
void | PktsAcked (Ptr< TcpSocketState > tcb, uint32_t segmentsAcked, const Time &rtt) override |
Timing information on received ACK. | |
Public Member Functions inherited from ns3::TcpNewReno | |
TcpNewReno () | |
TcpNewReno (const TcpNewReno &sock) | |
Copy constructor. | |
~TcpNewReno () override | |
Ptr< TcpCongestionOps > | Fork () override |
Copy the congestion control algorithm across sockets. | |
std::string | GetName () const override |
Get the name of the congestion control algorithm. | |
uint32_t | GetSsThresh (Ptr< const TcpSocketState > tcb, uint32_t bytesInFlight) override |
Get the slow start threshold after a loss event. | |
void | IncreaseWindow (Ptr< TcpSocketState > tcb, uint32_t segmentsAcked) override |
Try to increase the cWnd following the NewReno specification. | |
Public Member Functions inherited from ns3::TcpCongestionOps | |
TcpCongestionOps () | |
TcpCongestionOps (const TcpCongestionOps &other) | |
Copy constructor. | |
~TcpCongestionOps () override | |
virtual void | CongControl (Ptr< TcpSocketState > tcb, const TcpRateOps::TcpRateConnection &rc, const TcpRateOps::TcpRateSample &rs) |
Called when packets are delivered to update cwnd and pacing rate. | |
virtual void | CongestionStateSet (Ptr< TcpSocketState > tcb, const TcpSocketState::TcpCongState_t newState) |
Trigger events/calculations specific to a congestion state. | |
virtual void | CwndEvent (Ptr< TcpSocketState > tcb, const TcpSocketState::TcpCAEvent_t event) |
Trigger events/calculations on occurrence of congestion window event. | |
virtual bool | HasCongControl () const |
Returns true when Congestion Control Algorithm implements CongControl. | |
virtual void | Init (Ptr< TcpSocketState > tcb) |
Set configuration required by congestion control algorithm. | |
Public Member Functions inherited from ns3::Object | |
Object () | |
Constructor. | |
~Object () override | |
Destructor. | |
void | AggregateObject (Ptr< Object > other) |
Aggregate two Objects together. | |
void | Dispose () |
Dispose of this Object. | |
AggregateIterator | GetAggregateIterator () const |
Get an iterator to the Objects aggregated to this one. | |
TypeId | GetInstanceTypeId () const override |
Get the most derived TypeId for this Object. | |
template<typename T > | |
Ptr< T > | GetObject () const |
Get a pointer to the requested aggregated Object. | |
template<> | |
Ptr< Object > | GetObject () const |
Specialization of () for objects of type ns3::Object. | |
template<typename T > | |
Ptr< T > | GetObject (TypeId tid) const |
Get a pointer to the requested aggregated Object by TypeId. | |
template<> | |
Ptr< Object > | GetObject (TypeId tid) const |
Specialization of (TypeId tid) for objects of type ns3::Object. | |
void | Initialize () |
Invoke DoInitialize on all Objects aggregated to this one. | |
bool | IsInitialized () const |
Check if the object has been initialized. | |
void | UnidirectionalAggregateObject (Ptr< Object > other) |
Aggregate an Object to another Object. | |
Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter > | |
SimpleRefCount () | |
Default constructor. | |
SimpleRefCount (const SimpleRefCount &o) | |
Copy constructor. | |
uint32_t | GetReferenceCount () const |
Get the reference count of the object. | |
SimpleRefCount & | operator= (const SimpleRefCount &o) |
Assignment operator. | |
void | Ref () const |
Increment the reference count. | |
void | Unref () const |
Decrement the reference count. | |
Public Member Functions inherited from ns3::ObjectBase | |
virtual | ~ObjectBase () |
Virtual destructor. | |
void | GetAttribute (std::string name, AttributeValue &value, bool permissive=false) const |
Get the value of an attribute, raising fatal errors if unsuccessful. | |
bool | GetAttributeFailSafe (std::string name, AttributeValue &value) const |
Get the value of an attribute without raising errors. | |
void | SetAttribute (std::string name, const AttributeValue &value) |
Set a single attribute, raising fatal errors if unsuccessful. | |
bool | SetAttributeFailSafe (std::string name, const AttributeValue &value) |
Set a single attribute without raising errors. | |
bool | TraceConnect (std::string name, std::string context, const CallbackBase &cb) |
Connect a TraceSource to a Callback with a context. | |
bool | TraceConnectWithoutContext (std::string name, const CallbackBase &cb) |
Connect a TraceSource to a Callback without a context. | |
bool | TraceDisconnect (std::string name, std::string context, const CallbackBase &cb) |
Disconnect from a TraceSource a Callback previously connected with a context. | |
bool | TraceDisconnectWithoutContext (std::string name, const CallbackBase &cb) |
Disconnect from a TraceSource a Callback previously connected without a context. | |
Static Public Member Functions | |
static TypeId | GetTypeId () |
Get the type ID. | |
Static Public Member Functions inherited from ns3::TcpNewReno | |
static TypeId | GetTypeId () |
Get the type ID. | |
Static Public Member Functions inherited from ns3::TcpCongestionOps | |
static TypeId | GetTypeId () |
Get the type ID. | |
Static Public Member Functions inherited from ns3::Object | |
static TypeId | GetTypeId () |
Register this type. | |
Static Public Member Functions inherited from ns3::ObjectBase | |
static TypeId | GetTypeId () |
Get the type ID. | |
Protected Member Functions | |
void | CongestionAvoidance (Ptr< TcpSocketState > tcb, uint32_t segmentsAcked) override |
Invokes Congestion Avoidance of TcpNewReno if TcpLp is not within inference. | |
Protected Member Functions inherited from ns3::TcpNewReno | |
virtual uint32_t | SlowStart (Ptr< TcpSocketState > tcb, uint32_t segmentsAcked) |
Tcp NewReno slow start algorithm. | |
Protected Member Functions inherited from ns3::Object | |
Object (const Object &o) | |
Copy an Object. | |
virtual void | DoDispose () |
Destructor implementation. | |
virtual void | DoInitialize () |
Initialize() implementation. | |
virtual void | NotifyNewAggregate () |
Notify all Objects aggregated to this one of a new Object being aggregated. | |
Protected Member Functions inherited from ns3::ObjectBase | |
void | ConstructSelf (const AttributeConstructionList &attributes) |
Complete construction of ObjectBase; invoked by derived classes. | |
virtual void | NotifyConstructionCompleted () |
Notifier called once the ObjectBase is fully constructed. | |
Private Types | |
enum | State { LP_VALID_OWD = (1 << 1) , LP_WITHIN_THR = (1 << 3) , LP_WITHIN_INF = (1 << 4) } |
Describes the state of TcpLp. More... | |
Private Member Functions | |
uint32_t | OwdCalculator (Ptr< TcpSocketState > tcb) |
Calculates One-Way Delay using Sender and Receiver timestamps. | |
void | RttSample (Ptr< TcpSocketState > tcb) |
Estimates minimum and maximum One-Way Delays and calculates the smoothed One-Way Delay. | |
Private Attributes | |
uint32_t | m_flag |
TcpLp state flag. | |
Time | m_inference |
Current inference period. | |
Time | m_lastDrop |
Last time when cwnd was reduced. | |
uint32_t | m_owdMax |
Maximum One-Way Delay. | |
uint32_t | m_owdMaxRsv |
Reserved Maximum One-Way Delay. | |
uint32_t | m_owdMin |
Minimum One-Way Delay. | |
uint32_t | m_sOwd |
Smoothed One-Way Delay. | |
Additional Inherited Members | |
Related Symbols inherited from ns3::ObjectBase | |
static TypeId | GetObjectIid () |
Ensure the TypeId for ObjectBase gets fully configured to anchor the inheritance tree properly. | |
TCP-LP (Low Priority) congestion control algorithm.
ns3::TcpLp is accessible through the following paths with Config::Set and Config::Connect:
No Attributes are defined for this type.
No TraceSources are defined for this type.
Group: Internet
Size of this type is 88 bytes (on a 64-bit architecture).
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private |
ns3::TcpLp::TcpLp | ( | ) |
ns3::TcpLp::TcpLp | ( | const TcpLp & | sock | ) |
Copy constructor.
sock | the object to copy |
Definition at line 46 of file tcp-lp.cc.
References NS_LOG_FUNCTION.
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override |
Definition at line 59 of file tcp-lp.cc.
References NS_LOG_FUNCTION.
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overrideprotectedvirtual |
Invokes Congestion Avoidance of TcpNewReno if TcpLp is not within inference.
tcb | internal congestion state |
segmentsAcked | count of segments acked |
Reimplemented from ns3::TcpNewReno.
Definition at line 71 of file tcp-lp.cc.
References ns3::TcpNewReno::CongestionAvoidance(), LP_WITHIN_INF, m_flag, and NS_LOG_FUNCTION.
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overridevirtual |
Copy the congestion control algorithm across sockets.
Implements ns3::TcpCongestionOps.
Definition at line 65 of file tcp-lp.cc.
References ns3::Object::CopyObject.
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overridevirtual |
Get the name of the congestion control algorithm.
Implements ns3::TcpCongestionOps.
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static |
Get the type ID.
Definition at line 24 of file tcp-lp.cc.
References ns3::TypeId::SetParent().
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private |
Calculates One-Way Delay using Sender and Receiver timestamps.
tcb | internal congestion state |
Definition at line 82 of file tcp-lp.cc.
References LP_VALID_OWD, m_flag, and NS_LOG_FUNCTION.
Referenced by RttSample().
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overridevirtual |
Timing information on received ACK.
The function is called every time an ACK is received. It determines the state of TcpLp and adjusts the congestion window accordingly.
tcb | internal congestion state |
segmentsAcked | count of segments acked |
rtt | last rtt |
Reimplemented from ns3::TcpCongestionOps.
Definition at line 156 of file tcp-lp.cc.
References ns3::Time::GetMilliSeconds(), ns3::Time::IsZero(), LP_WITHIN_INF, LP_WITHIN_THR, m_flag, m_inference, m_lastDrop, m_owdMax, m_owdMaxRsv, m_owdMin, m_sOwd, ns3::MilliSeconds(), ns3::Simulator::Now(), NS_LOG_FUNCTION, and RttSample().
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private |
Estimates minimum and maximum One-Way Delays and calculates the smoothed One-Way Delay.
tcb | internal congestion state |
Definition at line 106 of file tcp-lp.cc.
References LP_VALID_OWD, m_flag, m_owdMax, m_owdMaxRsv, m_owdMin, m_sOwd, NS_LOG_FUNCTION, and OwdCalculator().
Referenced by PktsAcked().
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private |
TcpLp state flag.
Definition at line 91 of file tcp-lp.h.
Referenced by CongestionAvoidance(), OwdCalculator(), PktsAcked(), and RttSample().
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private |
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private |
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Maximum One-Way Delay.
Definition at line 94 of file tcp-lp.h.
Referenced by PktsAcked(), and RttSample().
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Reserved Maximum One-Way Delay.
Definition at line 95 of file tcp-lp.h.
Referenced by PktsAcked(), and RttSample().
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private |
Minimum One-Way Delay.
Definition at line 93 of file tcp-lp.h.
Referenced by PktsAcked(), and RttSample().
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private |
Smoothed One-Way Delay.
Definition at line 92 of file tcp-lp.h.
Referenced by PktsAcked(), and RttSample().