nc.h

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/*
 * Copyright (C) 2017 Freie Universität Berlin
 *
 * This file is subject to the terms and conditions of the GNU Lesser
 * General Public License v2.1. See the file LICENSE in the top level
 * directory for more details.
 */
 
#ifndef NET_GNRC_IPV6_NIB_NC_H
#define NET_GNRC_IPV6_NIB_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"
 
#ifdef __cplusplus
extern "C" {
#endif
 
#define GNRC_IPV6_NIB_NC_INFO_NUD_STATE_MASK            (0x0007)
 
#define GNRC_IPV6_NIB_NC_INFO_NUD_STATE_UNMANAGED       (0x0000)
 
#define GNRC_IPV6_NIB_NC_INFO_NUD_STATE_UNREACHABLE     (0x0001)
 
#define GNRC_IPV6_NIB_NC_INFO_NUD_STATE_INCOMPLETE      (0x0002)
 
#define GNRC_IPV6_NIB_NC_INFO_NUD_STATE_STALE           (0x0003)
 
#define GNRC_IPV6_NIB_NC_INFO_NUD_STATE_DELAY           (0x0004)
 
#define GNRC_IPV6_NIB_NC_INFO_NUD_STATE_PROBE           (0x0005)
 
#define GNRC_IPV6_NIB_NC_INFO_NUD_STATE_REACHABLE       (0x0006)
 
#define GNRC_IPV6_NIB_NC_INFO_IS_ROUTER                 (0x0008)
 
#define GNRC_IPV6_NIB_NC_INFO_IFACE_MASK                (0x01f0)
 
#define GNRC_IPV6_NIB_NC_INFO_IFACE_POS                 (4)
 
#define GNRC_IPV6_NIB_NC_INFO_AR_STATE_MASK             (0x0600)
 
#define GNRC_IPV6_NIB_NC_INFO_AR_STATE_POS              (9)
 
#define GNRC_IPV6_NIB_NC_INFO_AR_STATE_GC               (0x0000)
 
#define GNRC_IPV6_NIB_NC_INFO_AR_STATE_TENTATIVE        (0x0200)
 
#define GNRC_IPV6_NIB_NC_INFO_AR_STATE_REGISTERED       (0x0400)
 
#define GNRC_IPV6_NIB_NC_INFO_AR_STATE_MANUAL           (0x0600)
 
typedef struct {
    ipv6_addr_t ipv6;       
    uint8_t l2addr[CONFIG_GNRC_IPV6_NIB_L2ADDR_MAX_LEN];
    uint16_t info;
    uint8_t l2addr_len;     
} gnrc_ipv6_nib_nc_t;
 
static inline unsigned gnrc_ipv6_nib_nc_get_nud_state(const gnrc_ipv6_nib_nc_t *entry)
{
    return (entry->info & GNRC_IPV6_NIB_NC_INFO_NUD_STATE_MASK);
}
 
static inline bool gnrc_ipv6_nib_nc_is_router(const gnrc_ipv6_nib_nc_t *entry)
{
    return (entry->info & GNRC_IPV6_NIB_NC_INFO_IS_ROUTER);
}
 
static inline unsigned gnrc_ipv6_nib_nc_get_iface(const gnrc_ipv6_nib_nc_t *entry)
{
    return (entry->info & GNRC_IPV6_NIB_NC_INFO_IFACE_MASK) >>
           GNRC_IPV6_NIB_NC_INFO_IFACE_POS;
}
 
static inline unsigned gnrc_ipv6_nib_nc_get_ar_state(const gnrc_ipv6_nib_nc_t *entry)
{
    return (entry->info & GNRC_IPV6_NIB_NC_INFO_AR_STATE_MASK);
}
 
int gnrc_ipv6_nib_nc_set(const ipv6_addr_t *ipv6, unsigned iface,
                         const uint8_t *l2addr, size_t l2addr_len);
 
void gnrc_ipv6_nib_nc_del(const ipv6_addr_t *ipv6, unsigned iface);
 
void gnrc_ipv6_nib_nc_mark_reachable(const ipv6_addr_t *ipv6);
 
bool gnrc_ipv6_nib_nc_iter(unsigned iface, void **state,
                           gnrc_ipv6_nib_nc_t *nce);
 
void gnrc_ipv6_nib_nc_print(gnrc_ipv6_nib_nc_t *nce);
 
#ifdef __cplusplus
}
#endif
 
#endif /* NET_GNRC_IPV6_NIB_NC_H */