DSR error buffer. More...

#include "dsr-errorbuff.h"

Collaboration diagram for ns3::dsr::DsrErrorBuffer:

Public Member Functions
	DsrErrorBuffer ()
	Default constructor. More...

bool	Dequeue (Ipv4Address dst, DsrErrorBuffEntry &entry)
	Return first found (the earliest) entry for given destination. More...

void	DropPacketForErrLink (Ipv4Address source, Ipv4Address nextHop)
	Remove all packets with the error link. More...

bool	Enqueue (DsrErrorBuffEntry &entry)
	Push entry in queue, if there is no entry with the same packet and destination address in queue. More...

bool	Find (Ipv4Address dst)
	Finds whether a packet with destination dst exists in the queue. More...

std::vector< DsrErrorBuffEntry > &	GetBuffer ()
	Get error buffer entry. More...

Time	GetErrorBufferTimeout () const
	Get error buffer timeout. More...

uint32_t	GetMaxQueueLen () const
	Get maximum queue length. More...

uint32_t	GetSize ()
	Returns the number of entries in the queue. More...

void	SetErrorBufferTimeout (Time t)
	Set error buffer timeout. More...

void	SetMaxQueueLen (uint32_t len)
	Set maximum queue length. More...

Private Member Functions
void	Drop (DsrErrorBuffEntry en, std::string reason)
	Notify that packet is dropped from queue by timeout. More...

void	DropLink (DsrErrorBuffEntry en, std::string reason)
	Notify that packet is dropped from queue by link error. More...

void	Purge ()
	Remove all expired entries. More...

Static Private Member Functions
static bool	LinkEqual (DsrErrorBuffEntry en, const std::vector< Ipv4Address > link)
	Check if the send buffer entry is the same or not. More...

Private Attributes
std::vector< DsrErrorBuffEntry >	m_errorBuffer
	The send buffer to cache unsent packet. More...

Time	m_errorBufferTimeout
	The maximum period of time that a routing protocol is allowed to buffer a packet for, seconds. More...

uint32_t	m_maxLen
	The maximum number of packets that we allow a routing protocol to buffer. More...

Detailed Description

DSR error buffer.

Definition at line 196 of file dsr-errorbuff.h.

Constructor & Destructor Documentation

ns3::dsr::DsrErrorBuffer::DsrErrorBuffer ( )

inline

Default constructor.

Definition at line 202 of file dsr-errorbuff.h.

Member Function Documentation

bool ns3::dsr::DsrErrorBuffer::Dequeue	(	Ipv4Address	dst,
		DsrErrorBuffEntry &	entry
	)

Return first found (the earliest) entry for given destination.

Parameters

[in]	dst	The destination to look for
[out]	entry	The entry

Returns: true if an entry is found

Definition at line 109 of file dsr-errorbuff.cc.

References ns3::dsr::DsrErrorBuffEntry::GetPacket(), ns3::Packet::GetSize(), m_errorBuffer, NS_LOG_DEBUG, and Purge().

Referenced by ns3::dsr::DsrRouting::SendPacketFromBuffer().

Here is the call graph for this function:

Here is the caller graph for this function:

void ns3::dsr::DsrErrorBuffer::Drop	(	DsrErrorBuffEntry	en,
		std::string	reason
	)

private

Notify that packet is dropped from queue by timeout.

Parameters

en	Error Buffer Entry
reason	Drop reason.

Definition at line 184 of file dsr-errorbuff.cc.

References ns3::dsr::DsrErrorBuffEntry::GetDestination(), ns3::dsr::DsrErrorBuffEntry::GetPacket(), ns3::Packet::GetUid(), and NS_LOG_LOGIC().

Referenced by Enqueue(), and Purge().

Here is the call graph for this function:

Here is the caller graph for this function:

void ns3::dsr::DsrErrorBuffer::DropLink	(	DsrErrorBuffEntry	en,
		std::string	reason
	)

private

Notify that packet is dropped from queue by link error.

Parameters

en	Error Buffer Entry
reason	Drop reason.

Definition at line 193 of file dsr-errorbuff.cc.

References ns3::dsr::DsrErrorBuffEntry::GetNextHop(), ns3::dsr::DsrErrorBuffEntry::GetPacket(), ns3::dsr::DsrErrorBuffEntry::GetSource(), ns3::Packet::GetUid(), and NS_LOG_LOGIC().

Referenced by DropPacketForErrLink().

Here is the call graph for this function:

Here is the caller graph for this function:

void ns3::dsr::DsrErrorBuffer::DropPacketForErrLink	(	Ipv4Address	source,
		Ipv4Address	nextHop
	)

Remove all packets with the error link.

Parameters

source	The source
nextHop	The next hop

Definition at line 85 of file dsr-errorbuff.cc.

References DropLink(), LinkEqual(), list, m_errorBuffer, NS_LOG_FUNCTION, and Purge().

Referenced by ns3::dsr::DsrRouting::AddRoute(), and ns3::dsr::DsrRouting::AddRoute_Link().

Here is the call graph for this function:

Here is the caller graph for this function:

bool ns3::dsr::DsrErrorBuffer::Enqueue ( DsrErrorBuffEntry & entry )

Push entry in queue, if there is no entry with the same packet and destination address in queue.

Parameters

entry error buffer entry

Returns: true if entry added

Todo:: check the source and destination over here

Definition at line 53 of file dsr-errorbuff.cc.

References Drop(), ns3::dsr::DsrErrorBuffEntry::GetDestination(), ns3::dsr::DsrErrorBuffEntry::GetNextHop(), ns3::dsr::DsrErrorBuffEntry::GetPacket(), ns3::dsr::DsrErrorBuffEntry::GetSource(), ns3::Packet::GetUid(), m_errorBuffer, m_errorBufferTimeout, m_maxLen, NS_LOG_INFO, Purge(), and ns3::dsr::DsrErrorBuffEntry::SetExpireTime().

Referenced by ns3::dsr::DsrRouting::SendUnreachError().

Here is the call graph for this function:

Here is the caller graph for this function:

bool ns3::dsr::DsrErrorBuffer::Find ( Ipv4Address dst )

Finds whether a packet with destination dst exists in the queue.

Parameters

dst	The destination

Returns: true if a packet is found.

Definition at line 129 of file dsr-errorbuff.cc.

References m_errorBuffer, and NS_LOG_DEBUG.

Referenced by ns3::dsr::DsrRouting::SendPacketFromBuffer().

Here is the caller graph for this function:

std::vector<DsrErrorBuffEntry>& ns3::dsr::DsrErrorBuffer::GetBuffer ( )

inline

Get error buffer entry.

Returns: the DSR error buffer

Definition at line 274 of file dsr-errorbuff.h.

References m_errorBuffer.

Time ns3::dsr::DsrErrorBuffer::GetErrorBufferTimeout ( ) const

inline

Get error buffer timeout.

Returns: the error buffer timeout

Definition at line 258 of file dsr-errorbuff.h.

References m_errorBufferTimeout.

uint32_t ns3::dsr::DsrErrorBuffer::GetMaxQueueLen ( ) const

inline

Get maximum queue length.

Returns: the maximum queue length

Definition at line 242 of file dsr-errorbuff.h.

References m_maxLen.

uint32_t ns3::dsr::DsrErrorBuffer::GetSize ( void )

Returns the number of entries in the queue.

Returns: the number of entries in the queue.

Definition at line 46 of file dsr-errorbuff.cc.

References m_errorBuffer, and Purge().

Referenced by ns3::dsr::DsrRouting::SendPacketFromBuffer().

Here is the call graph for this function:

Here is the caller graph for this function:

static bool ns3::dsr::DsrErrorBuffer::LinkEqual	(	DsrErrorBuffEntry	en,
		const std::vector< Ipv4Address >	link
	)

inlinestaticprivate

Check if the send buffer entry is the same or not.

Parameters

en	Buffer Entry
link	Link description.

Returns: true if the entry is compatible with the link description (source and next hop)

Definition at line 308 of file dsr-errorbuff.h.

Referenced by DropPacketForErrLink().

Here is the caller graph for this function:

void ns3::dsr::DsrErrorBuffer::Purge ( )

private

Remove all expired entries.

Definition at line 163 of file dsr-errorbuff.cc.

References Drop(), m_errorBuffer, and NS_LOG_DEBUG.

Referenced by Dequeue(), DropPacketForErrLink(), Enqueue(), and GetSize().

Here is the call graph for this function:

Here is the caller graph for this function:

void ns3::dsr::DsrErrorBuffer::SetErrorBufferTimeout ( Time t )

inline

Set error buffer timeout.

Parameters

t	the error buffer timeout

Definition at line 266 of file dsr-errorbuff.h.

References m_errorBufferTimeout.

Referenced by ns3::dsr::DsrRouting::Start().

Here is the caller graph for this function:

void ns3::dsr::DsrErrorBuffer::SetMaxQueueLen ( uint32_t len )

inline

Set maximum queue length.

Parameters

len	the maximum queue length

Definition at line 250 of file dsr-errorbuff.h.

References m_maxLen.

Referenced by ns3::dsr::DsrRouting::Start().

Here is the caller graph for this function:

Member Data Documentation

std::vector<DsrErrorBuffEntry> ns3::dsr::DsrErrorBuffer::m_errorBuffer

private

The send buffer to cache unsent packet.

Definition at line 281 of file dsr-errorbuff.h.

Referenced by Dequeue(), DropPacketForErrLink(), Enqueue(), Find(), GetBuffer(), GetSize(), and Purge().

Time ns3::dsr::DsrErrorBuffer::m_errorBufferTimeout

private

The maximum period of time that a routing protocol is allowed to buffer a packet for, seconds.

Definition at line 300 of file dsr-errorbuff.h.

Referenced by Enqueue(), GetErrorBufferTimeout(), and SetErrorBufferTimeout().

uint32_t ns3::dsr::DsrErrorBuffer::m_maxLen

private

The maximum number of packets that we allow a routing protocol to buffer.

Definition at line 298 of file dsr-errorbuff.h.

Referenced by Enqueue(), GetMaxQueueLen(), and SetMaxQueueLen().

The documentation for this class was generated from the following files:

src/dsr/model/dsr-errorbuff.h
src/dsr/model/dsr-errorbuff.cc

Public Member Functions

Private Member Functions

Static Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation