static int _get_netif_state(gnrc_netif_t **netif, const ipv6_addr_t *addr) { *netif = gnrc_netif_get_by_ipv6_addr(addr); if (*netif != NULL) { int idx; gnrc_netif_acquire(*netif); idx = gnrc_netif_ipv6_addr_idx(*netif, addr); return ((idx >= 0) && gnrc_netif_ipv6_addr_dad_trans(*netif, idx)) ? idx : -1; } return -1; }
void _handle_rereg_address(const ipv6_addr_t *addr) { gnrc_netif_t *netif = gnrc_netif_get_by_ipv6_addr(addr); _nib_dr_entry_t *router = _nib_drl_get_dr(); const bool router_reachable = (router != NULL) && _is_reachable(router->next_hop); if (router_reachable && (netif != NULL)) { assert((unsigned)netif->pid == _nib_onl_get_if(router->next_hop)); DEBUG("nib: Re-registering %s", ipv6_addr_to_str(addr_str, addr, sizeof(addr_str))); DEBUG(" with upstream router %s\n", ipv6_addr_to_str(addr_str, &router->next_hop->ipv6, sizeof(addr_str))); _snd_ns(&router->next_hop->ipv6, netif, addr, &router->next_hop->ipv6); } else { DEBUG("nib: Couldn't re-register %s, no current router found or address " "wasn't assigned to any interface anymore.\n", ipv6_addr_to_str(addr_str, addr, sizeof(addr_str))); } if (netif != NULL) { int idx = gnrc_netif_ipv6_addr_idx(netif, addr); if (router_reachable && (_is_valid(netif, idx) || (_is_tentative(netif, idx) && (gnrc_netif_ipv6_addr_dad_trans(netif, idx) < SIXLOWPAN_ND_REG_TRANSMIT_NUMOF)))) { uint32_t retrans_time; if (_is_valid(netif, idx)) { retrans_time = SIXLOWPAN_ND_MAX_RS_SEC_INTERVAL * MS_PER_SEC; } else { retrans_time = netif->ipv6.retrans_time; /* increment encoded retransmission count */ netif->ipv6.addrs_flags[idx]++; } _evtimer_add(&netif->ipv6.addrs[idx], GNRC_IPV6_NIB_REREG_ADDRESS, &netif->ipv6.addrs_timers[idx], retrans_time); } else { netif->ipv6.rs_sent = 0; _handle_search_rtr(netif); } } }