#include <mac-rx-middle.h>

Collaboration diagram for ns3::MacRxMiddle:

Public Types
typedef Callback< void, Ptr < Packet >, const WifiMacHeader * >	ForwardUpCallback

Public Member Functions
	MacRxMiddle ()
	~MacRxMiddle ()
void	Receive (Ptr< Packet > packet, const WifiMacHeader *hdr)
void	SetForwardCallback (ForwardUpCallback callback)

Private Types
typedef std::map< Mac48Address, OriginatorRxStatus *, std::less< Mac48Address > >	Originators
typedef std::map< Mac48Address, OriginatorRxStatus *, std::less< Mac48Address > >::iterator	OriginatorsI
typedef std::map< std::pair < Mac48Address, uint8_t > , OriginatorRxStatus *, std::less< std::pair < Mac48Address, uint8_t > > >	QosOriginators
typedef std::map< std::pair < Mac48Address, uint8_t > , OriginatorRxStatus *, std::less< std::pair < Mac48Address, uint8_t > > >::iterator	QosOriginatorsI

Private Member Functions
Ptr< Packet >	HandleFragments (Ptr< Packet > packet, const WifiMacHeader hdr, OriginatorRxStatus originator)
bool	IsDuplicate (const WifiMacHeader hdr, OriginatorRxStatus originator) const
OriginatorRxStatus *	Lookup (const WifiMacHeader *hdr)

Private Attributes
ForwardUpCallback	m_callback
Originators	m_originatorStatus
QosOriginators	m_qosOriginatorStatus

Friends
class	MacRxMiddleTest

Detailed Description

This class handles duplicate detection and recomposition of fragments.

Definition at line 40 of file mac-rx-middle.h.

Member Typedef Documentation

typedef Callback<void, Ptr<Packet>, const WifiMacHeader*> ns3::MacRxMiddle::ForwardUpCallback

Definition at line 43 of file mac-rx-middle.h.

typedef std::map<Mac48Address, OriginatorRxStatus *, std::less<Mac48Address> > ns3::MacRxMiddle::Originators

private

Definition at line 58 of file mac-rx-middle.h.

typedef std::map<Mac48Address, OriginatorRxStatus *, std::less<Mac48Address> >::iterator ns3::MacRxMiddle::OriginatorsI

private

Definition at line 60 of file mac-rx-middle.h.

typedef std::map<std::pair<Mac48Address, uint8_t>, OriginatorRxStatus *, std::less<std::pair<Mac48Address,uint8_t> > > ns3::MacRxMiddle::QosOriginators

private

Definition at line 59 of file mac-rx-middle.h.

typedef std::map<std::pair<Mac48Address, uint8_t>, OriginatorRxStatus *, std::less<std::pair<Mac48Address,uint8_t> > >::iterator ns3::MacRxMiddle::QosOriginatorsI

private

Definition at line 61 of file mac-rx-middle.h.

Constructor & Destructor Documentation

ns3::MacRxMiddle::MacRxMiddle ( )

Definition at line 108 of file mac-rx-middle.cc.

References NS_LOG_FUNCTION_NOARGS.

ns3::MacRxMiddle::~MacRxMiddle ( )

Definition at line 113 of file mac-rx-middle.cc.

References m_originatorStatus, m_qosOriginatorStatus, and NS_LOG_FUNCTION_NOARGS.

Member Function Documentation

Ptr< Packet > ns3::MacRxMiddle::HandleFragments	(	Ptr< Packet >	packet,
		const WifiMacHeader *	hdr,
		OriginatorRxStatus *	originator
	)

private

Definition at line 187 of file mac-rx-middle.cc.

References ns3::OriginatorRxStatus::AccumulateFirstFragment(), ns3::OriginatorRxStatus::AccumulateFragment(), ns3::OriginatorRxStatus::AccumulateLastFragment(), ns3::WifiMacHeader::GetFragmentNumber(), ns3::WifiMacHeader::GetSequenceControl(), ns3::WifiMacHeader::GetSequenceNumber(), ns3::WifiMacHeader::GetSize(), ns3::Packet::GetSize(), ns3::OriginatorRxStatus::IsDeFragmenting(), ns3::WifiMacHeader::IsMoreFragments(), ns3::OriginatorRxStatus::IsNextFragment(), NS_LOG_DEBUG, NS_LOG_FUNCTION, and ns3::OriginatorRxStatus::SetSequenceControl().

Referenced by Receive().

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bool ns3::MacRxMiddle::IsDuplicate	(	const WifiMacHeader *	hdr,
		OriginatorRxStatus *	originator
	)		const

private

Definition at line 174 of file mac-rx-middle.cc.

References ns3::OriginatorRxStatus::GetLastSequenceControl(), ns3::WifiMacHeader::GetSequenceControl(), ns3::WifiMacHeader::IsRetry(), and NS_LOG_FUNCTION.

Referenced by Receive().

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OriginatorRxStatus * ns3::MacRxMiddle::Lookup ( const WifiMacHeader * hdr )

private

Definition at line 140 of file mac-rx-middle.cc.

References ns3::WifiMacHeader::GetAddr2(), ns3::WifiMacHeader::GetQosTid(), ns3::Mac48Address::IsGroup(), ns3::WifiMacHeader::IsQosData(), m_originatorStatus, m_qosOriginatorStatus, and NS_LOG_FUNCTION.

Referenced by Receive().

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void ns3::MacRxMiddle::Receive	(	Ptr< Packet >	packet,
		const WifiMacHeader *	hdr
	)

The check below is really uneeded because it can fail in a lot of normal cases. Specifically, it is possible for sequence numbers to loop back to zero once they reach 0xfff0 and to go up to 0xf7f0 in which case the check below will report the two sequence numbers to not have the correct order relationship. So, this check cannot be used to discard old duplicate frames. It is thus here only for documentation purposes.

Definition at line 246 of file mac-rx-middle.cc.

References ns3::WifiMacHeader::GetAddr1(), ns3::WifiMacHeader::GetAddr2(), ns3::WifiMacHeader::GetFragmentNumber(), ns3::WifiMacHeader::GetSequenceControl(), ns3::WifiMacHeader::GetSequenceNumber(), HandleFragments(), ns3::WifiMacHeader::IsData(), IsDuplicate(), ns3::Mac48Address::IsGroup(), ns3::WifiMacHeader::IsMgt(), Lookup(), m_callback, NS_ASSERT, NS_LOG_DEBUG, and NS_LOG_FUNCTION.