The Classic recovery implementation. More...
#include "tcp-recovery-ops.h"
Public Member Functions | |
TcpClassicRecovery () | |
Constructor. | |
TcpClassicRecovery (const TcpClassicRecovery &recovery) | |
Copy constructor. | |
~TcpClassicRecovery () override | |
Constructor. | |
void | DoRecovery (Ptr< TcpSocketState > tcb, uint32_t deliveredBytes, bool isDupAck) override |
Performs recovery based on the recovery algorithm. | |
void | EnterRecovery (Ptr< TcpSocketState > tcb, uint32_t dupAckCount, uint32_t unAckDataCount, uint32_t deliveredBytes) override |
Performs variable initialization at the start of recovery. | |
void | ExitRecovery (Ptr< TcpSocketState > tcb) override |
Performs cwnd adjustments at the end of recovery. | |
Ptr< TcpRecoveryOps > | Fork () override |
Copy the recovery algorithm across socket. | |
std::string | GetName () const override |
Get the name of the recovery algorithm. | |
Public Member Functions inherited from ns3::TcpRecoveryOps | |
TcpRecoveryOps () | |
Constructor. | |
TcpRecoveryOps (const TcpRecoveryOps &other) | |
Copy constructor. | |
~TcpRecoveryOps () override | |
Deconstructor. | |
virtual void | UpdateBytesSent (uint32_t bytesSent) |
Keeps track of bytes sent during recovery phase. | |
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::TcpRecoveryOps | |
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. | |
Additional Inherited Members | |
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. | |
Related Symbols inherited from ns3::ObjectBase | |
static TypeId | GetObjectIid () |
Ensure the TypeId for ObjectBase gets fully configured to anchor the inheritance tree properly. | |
The Classic recovery implementation.
Classic recovery refers to the two well-established recovery algorithms, namely, NewReno (RFC 6582) and SACK based recovery (RFC 6675).
The idea of the algorithm is that when we enter recovery, we set the congestion window value to the slow start threshold and maintain it at such value until we are fully recovered (in other words, until the highest sequence transmitted at time of detecting the loss is ACKed by the receiver).
ns3::TcpClassicRecovery 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 56 bytes (on a 64-bit architecture).
Definition at line 151 of file tcp-recovery-ops.h.
ns3::TcpClassicRecovery::TcpClassicRecovery | ( | ) |
ns3::TcpClassicRecovery::TcpClassicRecovery | ( | const TcpClassicRecovery & | recovery | ) |
Copy constructor.
recovery | object to copy. |
Definition at line 74 of file tcp-recovery-ops.cc.
References NS_LOG_FUNCTION.
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override |
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overridevirtual |
Performs recovery based on the recovery algorithm.
The function is called on arrival of every ack when TcpSocketState is set to CA_RECOVERY. It performs the necessary cwnd changes as per the recovery algorithm. The param isDupAck
has been added to align PRR implementation with RFC 6937 bis-08.
tcb | internal congestion state |
deliveredBytes | bytes (S)ACKed in the last (S)ACK |
isDupAck | Indicates if the last acknowledgement was duplicate. |
Implements ns3::TcpRecoveryOps.
Reimplemented in ns3::TcpPrrRecovery.
Definition at line 97 of file tcp-recovery-ops.cc.
References NS_LOG_FUNCTION.
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overridevirtual |
Performs variable initialization at the start of recovery.
The function is called when the TcpSocketState is changed to CA_RECOVERY.
tcb | internal congestion state |
dupAckCount | duplicate acknowledgement count |
unAckDataCount | total bytes of data unacknowledged |
deliveredBytes | bytes (S)ACKed in the last (S)ACK |
Implements ns3::TcpRecoveryOps.
Reimplemented in ns3::TcpPrrRecovery.
Definition at line 86 of file tcp-recovery-ops.cc.
References NS_LOG_FUNCTION.
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overridevirtual |
Performs cwnd adjustments at the end of recovery.
The function is called when the TcpSocketState is changed from CA_RECOVERY.
tcb | internal congestion state |
Implements ns3::TcpRecoveryOps.
Reimplemented in ns3::TcpPrrRecovery.
Definition at line 106 of file tcp-recovery-ops.cc.
References NS_LOG_FUNCTION.
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overridevirtual |
Copy the recovery algorithm across socket.
Implements ns3::TcpRecoveryOps.
Reimplemented in ns3::TcpPrrRecovery.
Definition at line 124 of file tcp-recovery-ops.cc.
References ns3::Object::CopyObject.
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overridevirtual |
Get the name of the recovery algorithm.
Implements ns3::TcpRecoveryOps.
Reimplemented in ns3::TcpPrrRecovery.
Definition at line 118 of file tcp-recovery-ops.cc.
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static |
Get the type ID.
Definition at line 59 of file tcp-recovery-ops.cc.
References ns3::TypeId::SetParent().
Referenced by Ns3TcpLossTestCase::DoSetup().