Definitions related to 6Lo node (6LN) functionality of the NIB. More...

Detailed Description

Definitions related to 6Lo node (6LN) functionality of the NIB.

See also: CONFIG_GNRC_IPV6_NIB_6LN

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

Definition in file _nib-6ln.h.

#include <kernel_defines.h>
#include <stdint.h>
#include "net/gnrc/ipv6/nib/conf.h"
#include "net/sixlowpan/nd.h"
#include "timex.h"
#include "evtimer.h"
#include "_nib-arsm.h"
#include "_nib-internal.h"

Include dependency graph for _nib-6ln.h:

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#define	_ADDR_REG_STATUS_TENTATIVE (3)
	Additional (local) status to ARO status values for tentative addresses.

#define	_ADDR_REG_STATUS_IGNORE (4)
	Additional (local) status to ARO status values for return values to signify that the address was ignored.

#define	_ADDR_REG_STATUS_UNAVAIL (255)
	Additional (local) status to ARO status values to signify that ARO is not available in NA.

bool	_resolve_addr_from_ipv6 (const ipv6_addr_t dst, gnrc_netif_t netif, gnrc_ipv6_nib_nc_t *nce)
	Resolves address statically from destination address using reverse translation of the IID.

static uint32_t	_get_next_rs_interval (const gnrc_netif_t *netif)
	Calculates exponential backoff for RS retransmissions.

uint8_t	_handle_aro (gnrc_netif_t netif, const ipv6_hdr_t ipv6, const icmpv6_hdr_t icmpv6, const sixlowpan_nd_opt_ar_t aro, const ndp_opt_t sl2ao, _nib_onl_entry_t nce)
	Handles ARO.

void	_handle_rereg_address (const ipv6_addr_t *addr)
	Handler for GNRC_IPV6_NIB_REREG_ADDRESS event handler.

_nib_abr_entry_t *	_handle_abro (const sixlowpan_nd_opt_abr_t *abro)

uint32_t	_handle_6co (const icmpv6_hdr_t icmpv6, const sixlowpan_nd_opt_6ctx_t sixco, _nib_abr_entry_t *abr)

Macro Definition Documentation

◆ _ADDR_REG_STATUS_IGNORE

#define _ADDR_REG_STATUS_IGNORE (4)

Additional (local) status to ARO status values for return values to signify that the address was ignored.

Definition at line 47 of file _nib-6ln.h.

◆ _ADDR_REG_STATUS_TENTATIVE

#define _ADDR_REG_STATUS_TENTATIVE (3)

Additional (local) status to ARO status values for tentative addresses.

Definition at line 41 of file _nib-6ln.h.

◆ _ADDR_REG_STATUS_UNAVAIL

#define _ADDR_REG_STATUS_UNAVAIL (255)

Additional (local) status to ARO status values to signify that ARO is not available in NA.

Can be assigned to the variable that receives the return value of _handle_aro(), so that the case that an NA does not contain an ARO (e.g. because upstream router does not support it) can be dealt with.

Definition at line 57 of file _nib-6ln.h.

Function Documentation

◆ _get_next_rs_interval()

static uint32_t _get_next_rs_interval ( const gnrc_netif_t * netif )

inlinestatic

Calculates exponential backoff for RS retransmissions.

See also: RFC 6775, section 5.3

Parameters

[in] netif The network interface that the RS will be sent over.

Returns: The interval in ms to the next RS

Definition at line 82 of file _nib-6ln.h.

◆ _handle_aro()

uint8_t _handle_aro	(	gnrc_netif_t *	netif,
		const ipv6_hdr_t *	ipv6,
		const icmpv6_hdr_t *	icmpv6,
		const sixlowpan_nd_opt_ar_t *	aro,
		const ndp_opt_t *	sl2ao,
		_nib_onl_entry_t *	nce )

Handles ARO.

Parameters

[in]	netif	The interface the ARO-carrying message came over.
[in]	ipv6	The IPv6 header of the message carrying the ARO.
[in]	icmpv6	The message carrying the ARO.
[in]	aro	ARO that carries the address registration information.
[in]	sl2ao	SL2AO associated with the ARO.
[in]	nce	Neighbor cache entry the ARO is supposed to change.

Returns: registration status of the address (including _ADDR_REG_STATUS_TENTATIVE and _ADDR_REG_STATUS_IGNORE).

◆ _handle_rereg_address()

void _handle_rereg_address ( const ipv6_addr_t * addr )

Handler for GNRC_IPV6_NIB_REREG_ADDRESS event handler.

Parameters

[in] addr An IPv6 address.

◆ _resolve_addr_from_ipv6()

bool _resolve_addr_from_ipv6	(	const ipv6_addr_t *	dst,
		gnrc_netif_t *	netif,
		gnrc_ipv6_nib_nc_t *	nce )

Resolves address statically from destination address using reverse translation of the IID.

Parameters

[in]	dst	A destination address.
[in]	netif	The interface to `dst`.
[out]	nce	Neighbor cache entry to resolve into

Returns: true when nce was set, false when not.