client.h File Reference

DHCPv6 client definitions. More...

Detailed Description

DHCPv6 client definitions.

Author

Martine Lenders m.len.nosp@m.ders.nosp@m.@fu-b.nosp@m.erli.nosp@m.n.de

Definition in file client.h.

#include "byteorder.h"
#include "event.h"
#include "net/ipv6/addr.h"
#include "thread.h"

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Data Structures
struct	dhcpv6_duid_l2_t
	DUID based on link-layer address plus time. More...

Macros
#define	DHCPV6_CLIENT_DUID_LEN   (sizeof(dhcpv6_duid_l2_t) + 8U)
	Static length of the DUID.
#define	DHCPV6_CLIENT_BUFLEN   (256)
	default length for send and receive buffer
#define	CONFIG_DHCPV6_CLIENT_PFX_LEASE_MAX   (1U)
	Maximum number of prefix leases to be stored.
#define	CONFIG_DHCPV6_CLIENT_ADDR_LEASE_MAX   (1U)
	Maximum number of address leases to be stored.
#define	DHCPV6_CLIENT_ADDRS_NUMOF   ((int)(CONFIG_DHCPV6_CLIENT_ADDR_LEASE_MAX))
	Number of addresses needed for using DHCPv6 IA_NA.
#define	CONFIG_DHCPV6_CLIENT_MUD_URL   "https://example.org"
	MUD URL (must use the https:// scheme) For more info, see the definitions below.

Functions
int	dhcpv6_client_req_ia_na (unsigned netif)
	Configures the client to request non-temporary addresses for a network interface from a server.

Auto-initialization parameters
#define	DHCPV6_CLIENT_STACK_SIZE   (THREAD_STACKSIZE_DEFAULT)
	stack size
#define	DHCPV6_CLIENT_PRIORITY   (THREAD_PRIORITY_MAIN - 2)
	priority

DHCPv6 Manufacturer Usage Description (MUD) URL option definitions
See also RFC 8520, section 10
#define	DHCPV6_CLIENT_SEND_BUFLEN   (DHCPV6_CLIENT_BUFLEN + 256)
	Length for the send buffer if a MUD URL is included in the DHCP client's packets.
#define	MAX_MUD_URL_LENGTH   (0xFF - sizeof(dhcpv6_opt_mud_url_t))
	Maximal length of a MUD URL.
enum	{ DHCPV6_CLIENT_CONF_MODE_INACTIVE , DHCPV6_CLIENT_CONF_MODE_STATEFUL , DHCPV6_CLIENT_CONF_MODE_STATELESS }
	Definition of DHCPv6 client configuration modes. More...
void	dhcpv6_client_set_conf_mode (uint8_t configuration_mode)
	Changes the DHCPv6 client's configuration mode.
uint8_t	dhcpv6_client_get_conf_mode (void)
	Retrieves the DHCPv6 client's current configuration mode.

DHCPv6 unique identifier (DUID) definitions
See also RFC 8415, section 11
void	dhcpv6_client_auto_init (void)
	Auto-initializes the client in its own thread.
void	dhcpv6_client_init (event_queue_t *event_queue, uint16_t netif)
	Initializes the client.
void	dhcpv6_client_start (void)
	Let the server start listening.

Configuration functions
int	dhcpv6_client_req_ia_pd (unsigned netif, unsigned pfx_len)
	Configures the client to request prefix delegation for a network interface from a server.

Stack-specific functions
These functions need to be provided by the network-stack implementation.
unsigned	dhcpv6_client_get_duid_l2 (unsigned netif, dhcpv6_duid_l2_t *duid)
	Get the link-layer address DUID for the client.
void	dhcpv6_client_conf_prefix (unsigned netif, const ipv6_addr_t *pfx, unsigned pfx_len, uint32_t valid, uint32_t pref)
	Configures a prefix delegation lease that is provided by the server.
static void	dhcpv6_client_conf_addr (unsigned netif, const ipv6_addr_t *addr, uint32_t valid, uint32_t pref)
	Configures a address lease that is provided by the server.
bool	dhcpv6_client_check_ia_na (unsigned netif)
	Checks if the given network interface is configured to use DHCPv6 IA_NA.
uint32_t	dhcpv6_client_prefix_valid_until (unsigned netif, const ipv6_addr_t *pfx, unsigned pfx_len)
	Determines how long the prefix delegation lease is still valid.
static uint32_t	dhcpv6_client_addr_valid_until (unsigned netif, const ipv6_addr_t *addr)
	Determines how long the address lease is still valid.

Macro Definition Documentation

DHCPV6_CLIENT_SEND_BUFLEN

#define DHCPV6_CLIENT_SEND_BUFLEN   (DHCPV6_CLIENT_BUFLEN + 256)

Length for the send buffer if a MUD URL is included in the DHCP client's packets.

Note

Only (re)defined by the dhcpv6_client_mud_url pseudo-module.

Definition at line 281 of file client.h.

MAX_MUD_URL_LENGTH

#define MAX_MUD_URL_LENGTH   (0xFF - sizeof(dhcpv6_opt_mud_url_t))

Maximal length of a MUD URL.

Definition at line 289 of file client.h.

Enumeration Type Documentation

anonymous enum

anonymous enum

Definition of DHCPv6 client configuration modes.

Definition at line 294 of file client.h.

Function Documentation

dhcpv6_client_addr_valid_until()

static uint32_t dhcpv6_client_addr_valid_until ( unsigned netif, const ipv6_addr_t * addr )

inlinestatic

Determines how long the address lease is still valid.

Parameters

[in]	netif	Network interface the address was for.
[in]	addr	The assigned address.

Returns

Remaining valid lifetime of the address lease in seconds.

Definition at line 260 of file client.h.

dhcpv6_client_check_ia_na()

bool dhcpv6_client_check_ia_na

(

unsigned

netif

)

Checks if the given network interface is configured to use DHCPv6 IA_NA.

Parameters

[in]

netif

Network interface to check.

Returns

true, if the network interface is set up for IA_NA.

dhcpv6_client_conf_addr()

static void dhcpv6_client_conf_addr ( unsigned netif, const ipv6_addr_t * addr, uint32_t valid, uint32_t pref )

inlinestatic

Configures a address lease that is provided by the server.

Parameters

[in]	netif	Network interface the address was for.
[in]	addr	The assigned address.
[in]	valid	Valid lifetime of the address.
[in]	pref	Preferred lifetime of the address.

Definition at line 223 of file client.h.

dhcpv6_client_conf_prefix()

void dhcpv6_client_conf_prefix	(	unsigned	netif,
		const ipv6_addr_t *	pfx,
		unsigned	pfx_len,
		uint32_t	valid,
		uint32_t	pref )

Configures a prefix delegation lease that is provided by the server.

Parameters

[in]	netif	Network interface the prefix delegation was for.
[in]	pfx	Prefix for the prefix delegation.
[in]	pfx_len	Length of pfx in bits.
[in]	valid	Valid lifetime of the prefix delegation.
[in]	pref	Preferred lifetime of the prefix delegation.

dhcpv6_client_get_conf_mode()

uint8_t dhcpv6_client_get_conf_mode

(

void

)

Retrieves the DHCPv6 client's current configuration mode.

Returns

The current configuration mode.

dhcpv6_client_get_duid_l2()

unsigned dhcpv6_client_get_duid_l2	(	unsigned	netif,
		dhcpv6_duid_l2_t *	duid )

Get the link-layer address DUID for the client.

Parameters

[in]	netif	The network interface the client is bound to. May be SOCK_ADDR_ANY_NETIF for any interface.
[out]	duid	The resulting DUID.

Returns

length of the duid on success.

0, on error.

dhcpv6_client_prefix_valid_until()

uint32_t dhcpv6_client_prefix_valid_until	(	unsigned	netif,
		const ipv6_addr_t *	pfx,
		unsigned	pfx_len )

Determines how long the prefix delegation lease is still valid.

Parameters

[in]	netif	Network interface the prefix delegation was for.
[in]	pfx	Prefix of the prefix delegation
[in]	pfx_len	Length of pfx in bits.

Returns

Remaining valid lifetime of the prefix delegation lease in seconds.

dhcpv6_client_set_conf_mode()

void dhcpv6_client_set_conf_mode

(

uint8_t

configuration_mode

)

Changes the DHCPv6 client's configuration mode.

Parameters

[in]

configuration_mode

The new configuration mode.