_nib-6lr.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 PRIV_NIB_6LR_H
#define PRIV_NIB_6LR_H
 
#include <kernel_defines.h>
 
#include "net/gnrc/ipv6/nib/conf.h"
#include "net/ndp.h"
#include "net/sixlowpan/nd.h"
 
#include "_nib-arsm.h"
#include "_nib-6ln.h"
#include "_nib-internal.h"
 
#ifdef __cplusplus
extern "C" {
#endif
 
#if IS_ACTIVE(CONFIG_GNRC_IPV6_NIB_6LR) || defined(DOXYGEN)
static inline uint16_t _get_ar_state(const _nib_onl_entry_t *entry)
{
    return (entry->info & GNRC_IPV6_NIB_NC_INFO_AR_STATE_MASK);
}
 
static inline void _set_ar_state(_nib_onl_entry_t *entry, uint16_t state)
{
    entry->info &= ~GNRC_IPV6_NIB_NC_INFO_AR_STATE_MASK;
    entry->info |= state;
}
 
static inline bool _rtr_sol_on_6lr(const gnrc_netif_t *netif,
                                   const icmpv6_hdr_t *icmpv6)
{
    (void)netif;    /* gnrc_netif_is_6lr() might just evaluate to false */
    return gnrc_netif_is_6lr(netif) && (icmpv6->type == ICMPV6_RTR_SOL);
}
 
uint8_t _reg_addr_upstream(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);
 
gnrc_pktsnip_t *_copy_and_handle_aro(gnrc_netif_t *netif, const ipv6_hdr_t *ipv6,
                                     const ndp_nbr_sol_t *nbr_sol,
                                     const sixlowpan_nd_opt_ar_t *aro,
                                     const ndp_opt_t *sl2ao);
 
#else   /* CONFIG_GNRC_IPV6_NIB_6LR || defined(DOXYGEN) */
#define _rtr_sol_on_6lr(netif, icmpv6)  (false)
#define _get_ar_state(nbr)              (_ADDR_REG_STATUS_IGNORE)
#define _set_ar_state(nbr, state)       (void)nbr; (void)state
/* _reg_addr_upstream() doesn't make sense without 6LR so don't even use it
 * => throw error in case it is compiled in => don't define it here as NOP macro
 */
#define _copy_and_handle_aro(netif, ipv6, icmpv6, aro, sl2ao) \
                                        (NULL)
#endif  /* CONFIG_GNRC_IPV6_NIB_6LR || defined(DOXYGEN) */
 
#ifdef __cplusplus
}
#endif
 
#endif /* PRIV_NIB_6LR_H */