nc.h File Reference

Neighbor cache definitions. More...

Detailed Description

Neighbor cache definitions.

Author

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

Definition in file nc.h.

#include <stdbool.h>
#include <stdint.h>
#include "net/eui64.h"
#include "net/gnrc/netif/hdr.h"
#include "net/gnrc/ipv6/nib/conf.h"
#include "net/ipv6/addr.h"

Include dependency graph for nc.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Data Structures
struct	gnrc_ipv6_nib_nc_t
	Neighbor cache entry view on NIB. More...

Functions
static unsigned	gnrc_ipv6_nib_nc_get_nud_state (const gnrc_ipv6_nib_nc_t *entry)
	Gets neighbor unreachability state from entry.
static bool	gnrc_ipv6_nib_nc_is_router (const gnrc_ipv6_nib_nc_t *entry)
	Gets router flag of a neighbor.
static unsigned	gnrc_ipv6_nib_nc_get_iface (const gnrc_ipv6_nib_nc_t *entry)
	Gets interface from entry.
static unsigned	gnrc_ipv6_nib_nc_get_ar_state (const gnrc_ipv6_nib_nc_t *entry)
	Gets address registration state of an entry.
int	gnrc_ipv6_nib_nc_set (const ipv6_addr_t *ipv6, unsigned iface, const uint8_t *l2addr, size_t l2addr_len)
	Adds an unmanaged neighbor entry to NIB.
void	gnrc_ipv6_nib_nc_del (const ipv6_addr_t *ipv6, unsigned iface)
	Deletes neighbor with address ipv6 from NIB.
void	gnrc_ipv6_nib_nc_mark_reachable (const ipv6_addr_t *ipv6)
	Mark neighbor with address ipv6 as reachable.
bool	gnrc_ipv6_nib_nc_iter (unsigned iface, void **state, gnrc_ipv6_nib_nc_t *nce)
	Iterates over all neighbor cache entries in the NIB.
void	gnrc_ipv6_nib_nc_print (gnrc_ipv6_nib_nc_t *nce)
	Prints a neighbor cache entry.

Info values
Values for gnrc_ipv6_nib_nc_t::info
#define	GNRC_IPV6_NIB_NC_INFO_NUD_STATE_MASK   (0x0007)
	Mask for neighbor unreachability detection (NUD) states.
#define	GNRC_IPV6_NIB_NC_INFO_NUD_STATE_UNMANAGED   (0x0000)
	Not managed by NUD.
#define	GNRC_IPV6_NIB_NC_INFO_NUD_STATE_UNREACHABLE   (0x0001)
	Entry is not reachable.
#define	GNRC_IPV6_NIB_NC_INFO_NUD_STATE_INCOMPLETE   (0x0002)
	Address resolution is currently performed.
#define	GNRC_IPV6_NIB_NC_INFO_NUD_STATE_STALE   (0x0003)
	Address might not be reachable.
#define	GNRC_IPV6_NIB_NC_INFO_NUD_STATE_DELAY   (0x0004)
	NUD will be performed in a moment.
#define	GNRC_IPV6_NIB_NC_INFO_NUD_STATE_PROBE   (0x0005)
	NUD is performed.
#define	GNRC_IPV6_NIB_NC_INFO_NUD_STATE_REACHABLE   (0x0006)
	Entry is reachable.
#define	GNRC_IPV6_NIB_NC_INFO_IS_ROUTER   (0x0008)
	gnrc_ipv6_nib_t::next_hop is router
#define	GNRC_IPV6_NIB_NC_INFO_IFACE_MASK   (0x01f0)
	Mask for interface identifier.
#define	GNRC_IPV6_NIB_NC_INFO_IFACE_POS   (4)
	Shift position of interface identifier.
#define	GNRC_IPV6_NIB_NC_INFO_AR_STATE_MASK   (0x0600)
	Mask for 6LoWPAN address registration (6Lo-AR) states.
#define	GNRC_IPV6_NIB_NC_INFO_AR_STATE_POS   (9)
	Shift position of address registration states.
#define	GNRC_IPV6_NIB_NC_INFO_AR_STATE_GC   (0x0000)
	Not managed by 6Lo-AR (address can be removed when memory is low.
#define	GNRC_IPV6_NIB_NC_INFO_AR_STATE_TENTATIVE   (0x0200)
	Address registration still pending at upstream router.
#define	GNRC_IPV6_NIB_NC_INFO_AR_STATE_REGISTERED   (0x0400)
	Address is registered.
#define	GNRC_IPV6_NIB_NC_INFO_AR_STATE_MANUAL   (0x0600)
	Address was added manually.