Pool information for IPv6 addresses and prefixes. More...

#include <pool.h>

Inheritance diagram for isc::dhcp::Pool6:

Public Member Functions
	Pool6 (const asiolink::IOAddress &prefix, const uint8_t prefix_len, const uint8_t delegated_len, const asiolink::IOAddress &excluded_prefix, const uint8_t excluded_prefix_len)
	Constructor for DHCPv6 prefix pool with an excluded prefix.

	Pool6 (Lease::Type type, const isc::asiolink::IOAddress &first, const isc::asiolink::IOAddress &last)
	the constructor for Pool6 "min-max" style definition

	Pool6 (Lease::Type type, const isc::asiolink::IOAddress &prefix, uint8_t prefix_len, uint8_t delegated_len=128)
	the constructor for Pool6 "prefix/len" style definition

uint8_t	getLength () const
	returns delegated prefix length

Option6PDExcludePtr	getPrefixExcludeOption () const
	Returns instance of the pool specific Prefix Exclude option.

Lease::Type	getType () const
	returns pool type

virtual data::ElementPtr	toElement () const
	Unparse a Pool6 object.

virtual std::string	toText () const
	returns textual representation of the pool

Public Member Functions inherited from isc::dhcp::Pool
virtual	~Pool ()=default
	virtual destructor

void	addAdditionalClass (const ClientClass &class_name)
	Adds class class_name to the additional classes list.

void	allowClientClass (const isc::dhcp::ClientClass &class_name)
	Adds class clas_name to the allowed client classes list.

bool	clientSupported (const ClientClasses &client_classes) const
	Checks whether this pool supports client that belongs to specified classes.

const ClientClasses &	getAdditionalClasses () const
	Returns the additional classes list.

AllocationStatePtr	getAllocationState () const
	Returns pool-specific allocation state.

isc::util::uint128_t	getCapacity () const
	Returns the number of all leases in this pool.

CfgOptionPtr	getCfgOption ()
	Returns pointer to the option data configuration for this pool.

ConstCfgOptionPtr	getCfgOption () const
	Returns const pointer to the option data configuration for this pool.

const ClientClasses &	getClientClasses () const
	Returns the list of allowed client classes.

const isc::asiolink::IOAddress &	getFirstAddress () const
	Returns the first address in a pool.

uint64_t	getID () const
	Returns Pool-id.

const isc::asiolink::IOAddress &	getLastAddress () const
	Returns the last address in a pool.

ClientClasses &	getMutableAdditionalClasses ()
	Returns the mutable additional classes list.

ClientClasses &	getMutableClientClasses ()
	Returns the mutable list of allowed client classes.

Lease::Type	getType () const
	Returns pool type (v4, v6 non-temporary, v6 temp, v6 prefix)

bool	inRange (const isc::asiolink::IOAddress &addr) const
	Checks if a given address is in the range.

void	setAllocationState (const AllocationStatePtr &allocation_state)
	Sets pool-specific allocation state.

void	setID (const uint64_t id)
	Sets Pool-id.

Public Member Functions inherited from isc::data::UserContext
void	contextToElement (data::ElementPtr map) const
	Merge unparse a user_context object.

data::ConstElementPtr	getContext () const
	Returns const pointer to the user context.

void	setContext (const data::ConstElementPtr &ctx)
	Sets user context.

Public Member Functions inherited from isc::data::CfgToElement
virtual	~CfgToElement ()
	Destructor.

Static Public Member Functions
static Pool6Ptr	create (const asiolink::IOAddress &prefix, const uint8_t prefix_len, const uint8_t delegated_len, const asiolink::IOAddress &excluded_prefix, const uint8_t excluded_prefix_len)
	Factory function for creating an instance of the `Pool6`.

static Pool6Ptr	create (Lease::Type type, const isc::asiolink::IOAddress &first, const isc::asiolink::IOAddress &last)
	Factory function for creating an instance of the `Pool6`.

static Pool6Ptr	create (Lease::Type type, const isc::asiolink::IOAddress &prefix, uint8_t prefix_len, uint8_t delegated_len=128)
	Factory function for creating an instance of the `Pool6`.

Static Public Member Functions inherited from isc::data::UserContext
static data::ElementPtr	toElement (data::ConstElementPtr map)
	Copy an Element map.

Additional Inherited Members
Protected Member Functions inherited from isc::dhcp::Pool
	Pool (Lease::Type type, const isc::asiolink::IOAddress &first, const isc::asiolink::IOAddress &last)
	protected constructor

Protected Attributes inherited from isc::dhcp::Pool
ClientClasses	additional_classes_
	Additional classes.

AllocationStatePtr	allocation_state_
	Holds pool-specific allocation state.

isc::util::uint128_t	capacity_
	Stores number of possible leases.

CfgOptionPtr	cfg_option_
	Pointer to the option data configuration for this pool.

ClientClasses	client_classes_
	List of client classes allowed to use this pool.

isc::asiolink::IOAddress	first_
	The first address in a pool.

uint64_t	id_
	pool-id

isc::asiolink::IOAddress	last_
	The last address in a pool.

Lease::Type	type_
	defines a lease type that will be served from this pool

data::ConstElementPtr	user_context_
	Pointer to the user context (may be NULL)

Protected Attributes inherited from isc::data::UserContext
data::ConstElementPtr	user_context_
	Pointer to the user context (may be NULL)

Detailed Description

Pool information for IPv6 addresses and prefixes.

It holds information about pool6, i.e. a range of IPv6 address space that is configured for DHCP allocation.

Definition at line 301 of file pool.h.

Constructor & Destructor Documentation

◆ Pool6() [1/3]

isc::dhcp::Pool6::Pool6	(	Lease::Type	type,
		const isc::asiolink::IOAddress &	first,
		const isc::asiolink::IOAddress &	last )

the constructor for Pool6 "min-max" style definition

Exceptions

BadValue if PD is define (PD can be only prefix/len)

Parameters

type	type of the pool (IA or TA)
first	the first address in a pool
last	the last address in a pool

Definition at line 170 of file pool.cc.

References isc::asiolink::addrsInRange(), isc::dhcp::Pool::capacity_, if(), isc_throw, isc::asiolink::IOAddress::isV6(), isc::dhcp::Lease::TYPE_NA, isc::dhcp::Lease::TYPE_PD, and isc::dhcp::Lease::TYPE_TA.

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◆ Pool6() [2/3]

isc::dhcp::Pool6::Pool6	(	Lease::Type	type,
		const isc::asiolink::IOAddress &	prefix,
		uint8_t	prefix_len,
		uint8_t	delegated_len = 128 )

the constructor for Pool6 "prefix/len" style definition

For addressed, this is just a prefix/len definition. For prefixes, there is one extra additional parameter delegated_len. It specifies a size of delegated prefixes that the pool will be split into. For example pool 2001:db8::/56, delegated_len=64 means that there is a pool 2001:db8::/56. It will be split into 256 prefixes of length /64, e.g. 2001:db8:0:1::/64, 2001:db8:0:2::/64 etc.

Naming convention: A smaller prefix length yields a shorter prefix which describes a larger set of addresses. A larger length yields a longer prefix which describes a smaller set of addresses.

Obviously, prefix_len must define shorter or equal prefix length than delegated_len, so prefix_len <= delegated_len. Note that it is slightly confusing: bigger (larger) prefix actually has smaller prefix length, e.g. /56 is a bigger prefix than /64, but has shorter (smaller) prefix length.

Exceptions

BadValue if delegated_len is defined for non-PD types or when delegated_len < prefix_len

Parameters

type	type of the pool (IA, TA or PD)
prefix	specifies prefix of the pool
prefix_len	specifies prefix length of the pool
delegated_len	specifies length of the delegated prefixes

Definition at line 212 of file pool.cc.

References isc::asiolink::IOAddress::IPV6_ZERO_ADDRESS().

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◆ Pool6() [3/3]

isc::dhcp::Pool6::Pool6	(	const asiolink::IOAddress &	prefix,
		const uint8_t	prefix_len,
		const uint8_t	delegated_len,
		const asiolink::IOAddress &	excluded_prefix,
		const uint8_t	excluded_prefix_len )

Constructor for DHCPv6 prefix pool with an excluded prefix.

If excluded_prefix is equal to '::' and the excluded_prefix_len is equal to 0, the excluded prefix is assumed to be unspecified for the pool. In this case, the server will not send the Prefix Exclude option to a client.

Parameters

prefix	specified a prefix of the pool.
prefix_len	specifies prefix length of the pool.
delegated_len	specifies length of the delegated prefixes.
excluded_prefix	specifies an excluded prefix as per RFC6603.
excluded_prefix_len	specifies length of an excluded prefix.

Todo: Check that the prefixes actually match. Theoretically, a user could specify a prefix which sets insignificant bits. We should clear insignificant bits based on the prefix length but this should be considered a part of the IOAddress class, perhaps and requires a bit of work (mainly in terms of testing).

Definition at line 221 of file pool.cc.

References isc_throw, isc::asiolink::IOAddress::isV6(), isc::asiolink::IOAddress::isV6Zero(), and isc::dhcp::Lease::TYPE_PD.

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Member Function Documentation

◆ create() [1/3]

Pool6Ptr isc::dhcp::Pool6::create	(	const asiolink::IOAddress &	prefix,
		const uint8_t	prefix_len,
		const uint8_t	delegated_len,
		const asiolink::IOAddress &	excluded_prefix,
		const uint8_t	excluded_prefix_len )

static

Factory function for creating an instance of the Pool6.

If excluded_prefix is equal to '::' and the excluded_prefix_len is equal to 0, the excluded prefix is assumed to be unspecified for the pool. In this case, the server will not send the Prefix Exclude option to a client.

Parameters

prefix	specifies a prefix of the pool.
prefix_len	specifies prefix length of the pool.
delegated_len	specifies length of the delegated prefixes.
excluded_prefix	specifies an excluded prefix as per RFC6603.
excluded_prefix_len	specifies length of an excluded prefix.

Returns: Pointer to the Pool6 instance.

Definition at line 284 of file pool.cc.

◆ create() [2/3]

Pool6Ptr isc::dhcp::Pool6::create	(	Lease::Type	type,
		const isc::asiolink::IOAddress &	first,
		const isc::asiolink::IOAddress &	last )

static

Factory function for creating an instance of the Pool6.

This function should be used to create an instance of the pool within a hooks library in cases when the library may be unloaded before the object is destroyed. This ensures that the ownership of the object by the Kea process is retained.

Parameters

type	type of the pool (IA or TA)
first	the first address in a pool
last	the last address in a pool

Returns: Pointer to the Pool6 instance.

Definition at line 273 of file pool.cc.

◆ create() [3/3]

Pool6Ptr isc::dhcp::Pool6::create	(	Lease::Type	type,
		const isc::asiolink::IOAddress &	prefix,
		uint8_t	prefix_len,
		uint8_t	delegated_len = 128 )

static

Factory function for creating an instance of the Pool6.

This function should be used to create an instance of the pool within a hooks library in cases when the library may be unloaded before the object is destroyed. This ensures that the ownership of the object by the Kea process is retained.

Parameters

type	type of the pool (IA, TA or PD)
prefix	specifies prefix of the pool
prefix_len	specifies prefix length of the pool
delegated_len	specifies length of the delegated prefixes

Returns: Pointer to the Pool6 instance.

Definition at line 278 of file pool.cc.

◆ getLength()

uint8_t isc::dhcp::Pool6::getLength ( ) const

inline

returns delegated prefix length

This may be useful for "prefix/len" style definition for addresses, but is mostly useful for prefix pools.

Returns: prefix length (1-128)

Definition at line 427 of file pool.h.

Referenced by toElement().

◆ getPrefixExcludeOption()

Option6PDExcludePtr isc::dhcp::Pool6::getPrefixExcludeOption ( ) const

inline

Returns instance of the pool specific Prefix Exclude option.

Returns: An instance of the Prefix Exclude option (RFC 6603) or NULL if such option hasn't been specified for the pool.

Definition at line 435 of file pool.h.

Referenced by toElement().

◆ getType()

Lease::Type isc::dhcp::Pool6::getType ( ) const

inline

returns pool type

Returns: pool type

Definition at line 418 of file pool.h.

References isc::dhcp::Pool::type_.

Referenced by toElement().

◆ toElement()

data::ElementPtr isc::dhcp::Pool6::toElement ( ) const

virtual

Unparse a Pool6 object.

Returns: A pointer to unparsed Pool6 configuration.

}

Reimplemented from isc::dhcp::Pool.

Definition at line 360 of file pool.cc.

References isc::data::Element::create(), isc::dhcp::Pool::getFirstAddress(), isc::dhcp::Pool::getLastAddress(), getLength(), getPrefixExcludeOption(), getType(), isc_throw, isc::asiolink::prefixLengthFromRange(), isc::dhcp::Pool::toElement(), isc::asiolink::IOAddress::toText(), isc::dhcp::Lease::TYPE_NA, and isc::dhcp::Lease::TYPE_PD.

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◆ toText()

std::string isc::dhcp::Pool6::toText ( ) const

virtual

returns textual representation of the pool

Returns: textual representation

Reimplemented from isc::dhcp::Pool.

Definition at line 430 of file pool.cc.

References isc::dhcp::Pool::first_, isc::dhcp::Pool::last_, isc::dhcp::Pool::type_, and isc::dhcp::Lease::typeToText().

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

Public Member Functions

Static Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ Pool6() [1/3]

◆ Pool6() [2/3]

◆ Pool6() [3/3]

Member Function Documentation

◆ create() [1/3]

◆ create() [2/3]

◆ create() [3/3]

◆ getLength()

◆ getPrefixExcludeOption()

◆ getType()

◆ toElement()

◆ toText()