Implementation class of Ipv4AddressGenerator This generator assigns addresses sequentially from a provided network address; used in topology code. More...

Classes
class	Entry
	This class holds the allocated addresses. More...

class	NetworkState
	This class holds the state for a given network. More...

Public Member Functions
	Ipv4AddressGeneratorImpl ()

virtual	~Ipv4AddressGeneratorImpl ()

bool	AddAllocated (const Ipv4Address addr)
	Add the Ipv4Address to the list of IPv4 entries. More...

Ipv4Address	GetAddress (const Ipv4Mask mask) const
	Get the Ipv4Address that will be allocated upon NextAddress () More...

Ipv4Address	GetNetwork (const Ipv4Mask mask) const
	Get the current network of the given Ipv4Mask. More...

void	Init (const Ipv4Address net, const Ipv4Mask mask, const Ipv4Address addr)
	Initialise the base network, mask and address for the generator. More...

void	InitAddress (const Ipv4Address addr, const Ipv4Mask mask)
	Set the address for the given mask. More...

bool	IsAddressAllocated (const Ipv4Address addr)
	Check the Ipv4Address allocation in the list of IPv4 entries. More...

bool	IsNetworkAllocated (const Ipv4Address addr, const Ipv4Mask mask)
	Check if a network has already allocated addresses. More...

Ipv4Address	NextAddress (const Ipv4Mask mask)
	Allocate the next Ipv4Address for the configured network and mask. More...

Ipv4Address	NextNetwork (const Ipv4Mask mask)
	Get the next network according to the given Ipv4Mask. More...

void	Reset (void)
	Reset the networks and Ipv4Address to zero. More...

void	TestMode (void)
	Used to turn off fatal errors and assertions, for testing. More...

Private Member Functions
uint32_t	MaskToIndex (Ipv4Mask mask) const
	Create an index number for the network mask. More...

Private Attributes
std::list< Entry >	m_entries
	contained of allocated addresses More...

NetworkState	m_netTable [N_BITS]
	the available networks More...

bool	m_test
	test mode (if true) More...

Static Private Attributes
static const uint32_t	MOST_SIGNIFICANT_BIT = 0x80000000
	MSB set to 1. More...

static const uint32_t	N_BITS = 32
	the number of bits in the address More...

Detailed Description

Implementation class of Ipv4AddressGenerator This generator assigns addresses sequentially from a provided network address; used in topology code.

It also keeps track of all addresses assigned to perform duplicate detection.

Definition at line 38 of file ipv4-address-generator.cc.

Constructor & Destructor Documentation

◆ Ipv4AddressGeneratorImpl()

ns3::Ipv4AddressGeneratorImpl::Ipv4AddressGeneratorImpl ( )

Definition at line 190 of file ipv4-address-generator.cc.

References NS_LOG_FUNCTION, and Reset().

◆ ~Ipv4AddressGeneratorImpl()

ns3::Ipv4AddressGeneratorImpl::~Ipv4AddressGeneratorImpl ( )

virtual

Definition at line 236 of file ipv4-address-generator.cc.

References NS_LOG_FUNCTION.

Member Function Documentation

◆ AddAllocated()

bool ns3::Ipv4AddressGeneratorImpl::AddAllocated ( const Ipv4Address addr )

Add the Ipv4Address to the list of IPv4 entries.

Typically, this is used by external address allocators that want to make use of this class's ability to track duplicates. AddAllocated is always called internally for any address generated by NextAddress ()

Parameters

addr	The Ipv4Address to be added to the list of Ipv4 entries

Returns: true on success

Referenced by NextAddress().

◆ GetAddress()

Ipv4Address ns3::Ipv4AddressGeneratorImpl::GetAddress ( const Ipv4Mask mask ) const

Get the Ipv4Address that will be allocated upon NextAddress ()

Does not change the internal state; just is used to peek the next address that will be allocated upon NextAddress ()

Parameters

mask	The Ipv4Mask for the current network

Returns: the IPv4 address

Definition at line 320 of file ipv4-address-generator.cc.

References m_netTable, MaskToIndex(), and NS_LOG_FUNCTION.

◆ GetNetwork()

Ipv4Address ns3::Ipv4AddressGeneratorImpl::GetNetwork ( const Ipv4Mask mask ) const

Get the current network of the given Ipv4Mask.

Does not change the internal state; this just peeks at the current network

Parameters

mask	The Ipv4Mask for the current network

Returns: the IPv4 address of the current network

◆ Init()

void ns3::Ipv4AddressGeneratorImpl::Init	(	const Ipv4Address	net,
		const Ipv4Mask	mask,
		const Ipv4Address	addr
	)

Initialise the base network, mask and address for the generator.

The first call to NextAddress() or GetAddress() will return the value passed in.

Parameters

net	The network for the base Ipv4Address
mask	The network mask of the base Ipv4Address
addr	The base address used for initialization

Definition at line 242 of file ipv4-address-generator.cc.

References ns3::Ipv4AddressGeneratorImpl::NetworkState::addr, ns3::Ipv4Address::Get(), ns3::Ipv4Mask::Get(), m_netTable, ns3::maskBits, MaskToIndex(), ns3::Ipv4AddressGeneratorImpl::NetworkState::network, NS_ABORT_MSG_UNLESS, NS_LOG_FUNCTION, and ns3::Ipv4AddressGeneratorImpl::NetworkState::shift.

◆ InitAddress()

void ns3::Ipv4AddressGeneratorImpl::InitAddress	(	const Ipv4Address	addr,
		const Ipv4Mask	mask
	)

Set the address for the given mask.

Parameters

addr	The address to set for the current mask
mask	The Ipv4Mask whose address is to be set

◆ IsAddressAllocated()

bool ns3::Ipv4AddressGeneratorImpl::IsAddressAllocated ( const Ipv4Address addr )

Check the Ipv4Address allocation in the list of IPv4 entries.

Parameters

addr	The Ipv4Address to be checked in the list of Ipv4 entries

Returns: true if the address is already allocated

Definition at line 450 of file ipv4-address-generator.cc.

References first::address, m_entries, NS_ABORT_MSG_UNLESS, NS_LOG_FUNCTION, and NS_LOG_LOGIC().

◆ IsNetworkAllocated()

bool ns3::Ipv4AddressGeneratorImpl::IsNetworkAllocated	(	const Ipv4Address	addr,
		const Ipv4Mask	mask
	)

Check if a network has already allocated addresses.

Parameters

addr	The Ipv4 network to be checked
mask	The Ipv4 network mask

Returns: true if the network is already allocated

◆ MaskToIndex()

uint32_t ns3::Ipv4AddressGeneratorImpl::MaskToIndex ( Ipv4Mask mask ) const

private

Create an index number for the network mask.

Parameters

mask	the mask to index

Returns: an index

Referenced by GetAddress(), Init(), and NextAddress().

◆ NextAddress()

Ipv4Address ns3::Ipv4AddressGeneratorImpl::NextAddress ( const Ipv4Mask mask )

Allocate the next Ipv4Address for the configured network and mask.

This operation is a post-increment, meaning that the first address allocated will be the one that was initially configured.

Parameters

mask	The Ipv4Mask for the current network

Returns: the IPv4 address

Definition at line 333 of file ipv4-address-generator.cc.

References AddAllocated(), ns3::Ipv4AddressGeneratorImpl::NetworkState::addr, m_netTable, MaskToIndex(), NS_ABORT_MSG_UNLESS, and NS_LOG_FUNCTION.

◆ NextNetwork()

Ipv4Address ns3::Ipv4AddressGeneratorImpl::NextNetwork ( const Ipv4Mask mask )

Get the next network according to the given Ipv4Mask.

This operation is a pre-increment, meaning that the internal state is changed before returning the new network address.

This also resets the address to the base address that was used for initialization.

Parameters

mask	The Ipv4Mask used to set the next network

Returns: the IPv4 address of the next network

◆ Reset()

void ns3::Ipv4AddressGeneratorImpl::Reset ( void )

Reset the networks and Ipv4Address to zero.

Definition at line 198 of file ipv4-address-generator.cc.

References ns3::Ipv4AddressGeneratorImpl::NetworkState::addr, ns3::Ipv4AddressGeneratorImpl::NetworkState::addrMax, m_entries, m_netTable, m_test, ns3::Ipv4AddressGeneratorImpl::NetworkState::mask, MOST_SIGNIFICANT_BIT, N_BITS, ns3::Ipv4AddressGeneratorImpl::NetworkState::network, NS_LOG_FUNCTION, and ns3::Ipv4AddressGeneratorImpl::NetworkState::shift.

Referenced by Ipv4AddressGeneratorImpl().

◆ TestMode()

void ns3::Ipv4AddressGeneratorImpl::TestMode ( void )

Used to turn off fatal errors and assertions, for testing.

Member Data Documentation

◆ m_entries

std::list<Entry> ns3::Ipv4AddressGeneratorImpl::m_entries

private

contained of allocated addresses

Definition at line 186 of file ipv4-address-generator.cc.

Referenced by IsAddressAllocated(), and Reset().

◆ m_netTable

NetworkState ns3::Ipv4AddressGeneratorImpl::m_netTable[N_BITS]

private

the available networks

Definition at line 174 of file ipv4-address-generator.cc.

Referenced by GetAddress(), Init(), NextAddress(), and Reset().

◆ m_test

bool ns3::Ipv4AddressGeneratorImpl::m_test

private

test mode (if true)

Definition at line 187 of file ipv4-address-generator.cc.

Referenced by Reset().

◆ MOST_SIGNIFICANT_BIT

const uint32_t ns3::Ipv4AddressGeneratorImpl::MOST_SIGNIFICANT_BIT = 0x80000000

staticprivate

MSB set to 1.

Definition at line 152 of file ipv4-address-generator.cc.

Referenced by Reset().

◆ N_BITS

const uint32_t ns3::Ipv4AddressGeneratorImpl::N_BITS = 32

staticprivate

the number of bits in the address

Definition at line 151 of file ipv4-address-generator.cc.

Referenced by Reset().

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

src/internet/model/ipv4-address-generator.cc

Classes

Public Member Functions

Private Member Functions

Private Attributes

Static Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ Ipv4AddressGeneratorImpl()

◆ ~Ipv4AddressGeneratorImpl()

Member Function Documentation

◆ AddAllocated()

◆ GetAddress()

◆ GetNetwork()

◆ Init()

◆ InitAddress()

◆ IsAddressAllocated()

◆ IsNetworkAllocated()

◆ MaskToIndex()

◆ NextAddress()

◆ NextNetwork()

◆ Reset()

◆ TestMode()

Member Data Documentation

◆ m_entries

◆ m_netTable

◆ m_test

◆ MOST_SIGNIFICANT_BIT

◆ N_BITS