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

#include "ipv4-address-generator.h"

Static Public Member Functions
static bool	AddAllocated (const Ipv4Address addr)
	Add the Ipv4Address to the list of IPv4 entries. More...

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

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

static void	Init (const Ipv4Address net, const Ipv4Mask mask, const Ipv4Address addr="0.0.0.1")
	Initialise the base network, mask and address for the generator. More...

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

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

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

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

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

Detailed Description

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

Note: BEWARE: this class acts as a Singleton. In other terms, two different instances of Ipv4AddressGenerator will pick IPv4 numbers from the same pool. Changing the network in one of them will also change the network in the other instances.

Definition at line 39 of file ipv4-address-generator.h.

Member Function Documentation

static bool ns3::Ipv4AddressGenerator::AddAllocated ( const Ipv4Address addr )

static

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 ns3::Ipv4AddressHelper::NewAddress().

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static Ipv4Address ns3::Ipv4AddressGenerator::GetAddress ( const Ipv4Mask mask )

static

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

static Ipv4Address ns3::Ipv4AddressGenerator::GetNetwork ( const Ipv4Mask mask )

static

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

static void ns3::Ipv4AddressGenerator::Init	(	const Ipv4Address	net,
		const Ipv4Mask	mask,
		const Ipv4Address	addr = `"0.0.0.1"`
	)

static

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

static void ns3::Ipv4AddressGenerator::InitAddress	(	const Ipv4Address	addr,
		const Ipv4Mask	mask
	)

static

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

static Ipv4Address ns3::Ipv4AddressGenerator::NextAddress ( const Ipv4Mask mask )

static

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

static Ipv4Address ns3::Ipv4AddressGenerator::NextNetwork ( const Ipv4Mask mask )

static

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

static void ns3::Ipv4AddressGenerator::Reset ( void )

static

Reset the networks and Ipv4Address to zero.

static void ns3::Ipv4AddressGenerator::TestMode ( void )

static

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

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

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

Static Public Member Functions

Detailed Description

Member Function Documentation