Address/prefix allocator that iterates over all addresses. More...

#include <alloc_engine.h>

Inheritance diagram for isc::dhcp::AllocEngine::IterativeAllocator:

Public Member Functions
	IterativeAllocator (Lease::Type type)
	Default constructor. More...

Public Member Functions inherited from isc::dhcp::AllocEngine::Allocator
	Allocator (Lease::Type pool_type)
	Default constructor. More...

virtual	~Allocator ()
	Virtual destructor. More...

virtual isc::asiolink::IOAddress	pickAddress (const SubnetPtr &subnet, const ClientClasses &client_classes, const DuidPtr &duid, const isc::asiolink::IOAddress &hint)
	Picks one address out of available pools in a given subnet. More...

Static Protected Member Functions
static isc::asiolink::IOAddress	increaseAddress (const isc::asiolink::IOAddress &address, bool prefix, const uint8_t prefix_len)
	Returns the next address or prefix. More...

static isc::asiolink::IOAddress	increasePrefix (const isc::asiolink::IOAddress &prefix, const uint8_t prefix_len)
	Returns the next prefix. More...

Additional Inherited Members
Protected Attributes inherited from isc::dhcp::AllocEngine::Allocator
Lease::Type	pool_type_
	Defines pool type allocation. More...

Detailed Description

Address/prefix allocator that iterates over all addresses.

This class implements an iterative algorithm that returns all addresses in a pool iteratively, one after another. Once the last address is reached, it starts allocating from the beginning of the first pool (i.e. it loops over).

Definition at line 148 of file alloc_engine.h.

Constructor & Destructor Documentation

isc::dhcp::AllocEngine::IterativeAllocator::IterativeAllocator ( Lease::Type type )

Default constructor.

Does not do anything

Parameters

type	- specifies allocation type

Definition at line 93 of file alloc_engine.cc.

Member Function Documentation

isc::asiolink::IOAddress isc::dhcp::AllocEngine::IterativeAllocator::increaseAddress	(	const isc::asiolink::IOAddress &	address,
		bool	prefix,
		const uint8_t	prefix_len
	)

staticprotected

Returns the next address or prefix.

This method works for IPv4 addresses, IPv6 addresses and IPv6 prefixes.

Parameters

address	address or prefix to be increased
prefix	true when the previous argument is a prefix
prefix_len	length of the prefix

Returns: result address or prefix

Definition at line 151 of file alloc_engine.cc.

References isc::asiolink::IOAddress::increase().

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isc::asiolink::IOAddress isc::dhcp::AllocEngine::IterativeAllocator::increasePrefix	(	const isc::asiolink::IOAddress &	prefix,
		const uint8_t	prefix_len
	)

staticprotected

Returns the next prefix.

This method works for IPv6 addresses only. It increases the specified prefix by a given prefix_len. For example, 2001:db8:: increased by prefix length /32 will become 2001:db9::. This method is used to iterate over IPv6 prefix pools

Parameters

prefix	prefix to be increased
prefix_len	length of the prefix to be increased

Returns: result prefix

Definition at line 98 of file alloc_engine.cc.

References isc::asiolink::IOAddress::fromBytes(), isc_throw, isc::asiolink::IOAddress::isV6(), and isc::asiolink::IOAddress::toBytes().

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

Public Member Functions

Static Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation