_nib-6ln.h

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

See also

ipv6/nib/conf.h::GNRC_IPV6_NIB_CONF_6LN

_ADDR_REG_STATUS_TENTATIVE

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

1
(3)
_ADDR_REG_STATUS_IGNORE

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

1
(4)
_ADDR_REG_STATUS_UNAVAIL

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

1
(255)

Can be assigned to the variable that receives the return value of _nib-6ln.h::_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.

uint32_t _now_min(void)
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

dst:A destination address.
netif:The interface to dst.
nce:Neighbor cache entry to resolve into

Return values

  • true when nce was set, false when not.
uint32_t _get_next_rs_interval(const gnrc_netif_t * netif)

Calculates exponential backoff for RS retransmissions.

See also

RFC 6775, section 5.3

Parameters

netif:The network interface that the RS will be sent over.

Return values

  • The interval in ms to the next RS
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

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

Return values

  • registration status of the address (including _nib-6ln.h::_ADDR_REG_STATUS_TENTATIVE and _nib-6ln.h::_ADDR_REG_STATUS_IGNORE).
void _handle_rereg_address(const ipv6_addr_t * addr)

Handler for nib.h::GNRC_IPV6_NIB_REREG_ADDRESS event handler.

Parameters

addr:An IPv6 address.

_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)