C++ (Cpp) gnrc_sixlowpan_nd_router_set_rtr_adv示例

示例#1

文件： gnrc_ipv6_netif.c 项目： ThanhVic/RIOT

void gnrc_ipv6_netif_set_rtr_adv(gnrc_ipv6_netif_t *netif, bool enable)
{
#if defined(MODULE_GNRC_SIXLOWPAN_ND_ROUTER)
    if (netif->flags & GNRC_IPV6_NETIF_FLAGS_SIXLOWPAN) {
        gnrc_sixlowpan_nd_router_set_rtr_adv(netif, enable);
        return;
    }
#endif
    gnrc_ndp_router_set_rtr_adv(netif, enable);
}

示例#2

文件： gnrc_ndp_internal.c 项目： khhhh/RIOT

bool gnrc_ndp_internal_pi_opt_handle(kernel_pid_t iface, uint8_t icmpv6_type,
                                     ndp_opt_pi_t *pi_opt)
{
    ipv6_addr_t *prefix;
    gnrc_ipv6_netif_addr_t *netif_addr;

    if ((pi_opt->len != NDP_OPT_PI_LEN)) {
        DEBUG("ndp: invalid PI option received\n");
        return false;
    }
    if (icmpv6_type != ICMPV6_RTR_ADV || ipv6_addr_is_link_local(&pi_opt->prefix)) {
        /* else discard silently */
        return true;
    }
#ifdef MODULE_GNRC_SIXLOWPAN_ND
    if ((gnrc_ipv6_netif_get(iface)->flags & GNRC_IPV6_NETIF_FLAGS_SIXLOWPAN) &&
        (pi_opt->flags & NDP_OPT_PI_FLAGS_L)) {
        /* ignore: see https://tools.ietf.org/html/rfc6775#section-5.4 */
        return true;
    }
#endif
    prefix = gnrc_ipv6_netif_find_addr(iface, &pi_opt->prefix);
    if (((prefix == NULL) ||
         (gnrc_ipv6_netif_addr_get(prefix)->prefix_len != pi_opt->prefix_len)) &&
        (pi_opt->valid_ltime.u32 != 0)) {
        ipv6_addr_t pref_addr;

        if ((gnrc_netapi_get(iface, NETOPT_IPV6_IID, 0, &pref_addr.u64[1],
                             sizeof(eui64_t)) < 0)) {
            DEBUG("ndp: could not get IID from interface %d\n", iface);
            return false;
        }
        ipv6_addr_init_prefix(&pref_addr, &pi_opt->prefix, pi_opt->prefix_len);
        prefix = gnrc_ipv6_netif_add_addr(iface, &pref_addr,
                                          pi_opt->prefix_len,
                                          pi_opt->flags & NDP_OPT_PI_FLAGS_MASK);
        if (prefix == NULL) {
            DEBUG("ndp: could not add prefix to interface %d\n", iface);
            return false;
        }
#ifdef MODULE_GNRC_SIXLOWPAN_ND_ROUTER
        gnrc_sixlowpan_nd_router_set_rtr_adv(gnrc_ipv6_netif_get(iface), true);
#endif
    }
    netif_addr = gnrc_ipv6_netif_addr_get(prefix);
    if (pi_opt->valid_ltime.u32 == 0) {
        if (prefix != NULL) {
            gnrc_ipv6_netif_remove_addr(iface, &netif_addr->addr);
        }

        return true;
    }
    netif_addr->valid = byteorder_ntohl(pi_opt->valid_ltime);
    netif_addr->preferred = byteorder_ntohl(pi_opt->pref_ltime);
    if (netif_addr->valid != UINT32_MAX) {
        xtimer_set_msg(&netif_addr->valid_timeout,
                       (byteorder_ntohl(pi_opt->valid_ltime) * SEC_IN_USEC),
                       &netif_addr->valid_timeout_msg, thread_getpid());
    }
    /* TODO: preferred lifetime for address auto configuration */
    /* on-link flag MUST stay set if it was */
    netif_addr->flags &= ~NDP_OPT_PI_FLAGS_A;
    netif_addr->flags |= (pi_opt->flags & NDP_OPT_PI_FLAGS_MASK);
    return true;
}