C++ (Cpp) gnrc_sixlowpan_ctx_update Examples

Example #1

File: gnrc_sixlowpan_nd.c Project: patkan/RIOT

bool gnrc_sixlowpan_nd_opt_6ctx_handle(uint8_t icmpv6_type, sixlowpan_nd_opt_6ctx_t *ctx_opt)
{
    if (((ctx_opt->ctx_len < 64) && (ctx_opt->len != 2)) ||
        ((ctx_opt->ctx_len >= 64) && (ctx_opt->len != 3))) {
        DEBUG("6lo nd: invalid 6LoWPAN context option received\n");
        return false;
    }
    if (icmpv6_type != ICMPV6_RTR_ADV) {
        /* discard silently */
        return true;
    }
    /* don't care for result */
    gnrc_sixlowpan_ctx_update(sixlowpan_nd_opt_6ctx_get_cid(ctx_opt), (ipv6_addr_t *)(ctx_opt + 1),
                              ctx_opt->ctx_len, byteorder_ntohs(ctx_opt->ltime),
                              sixlowpan_nd_opt_6ctx_is_comp(ctx_opt));
    return true;
}

Example #2

File: _nib-6ln.c Project: drmrboy/RIOT

                     /* UINT16_MAX min < UINT32_MAX ms so no risk of overflow */
                     MS_PER_SEC * SEC_PER_MIN * ltime);
    }
    return abr;
}
#endif /* GNRC_IPV6_NIB_CONF_MULTIHOP_P6C */

#if GNRC_IPV6_NIB_CONF_MULTIHOP_P6C
uint32_t _handle_6co(const icmpv6_hdr_t *icmpv6,
                     const sixlowpan_nd_opt_6ctx_t *sixco,
                     _nib_abr_entry_t *abr)
#else   /* GNRC_IPV6_NIB_CONF_MULTIHOP_P6C */
uint32_t _handle_6co(const icmpv6_hdr_t *icmpv6,
                     const sixlowpan_nd_opt_6ctx_t *sixco)
#endif  /* GNRC_IPV6_NIB_CONF_MULTIHOP_P6C */
{
    uint16_t ltime;

#ifdef MODULE_GNRC_SIXLOWPAN_CTX
    uint8_t cid;
#endif  /* MODULE_GNRC_SIXLOWPAN_CTX */

    if ((sixco->len != SIXLOWPAN_ND_OPT_6CTX_LEN_MIN) ||
        ((sixco->len != SIXLOWPAN_ND_OPT_6CTX_LEN_MAX) &&
         (sixco->ctx_len > 64U)) ||
        (icmpv6->type != ICMPV6_RTR_ADV)) {
        DEBUG("nib: received 6CO of invalid length (%u), must be %u "
              "or wasn't delivered by RA."
              "\n",
              sixco->len,
              (sixco->ctx_len > 64U) ? SIXLOWPAN_ND_OPT_6CTX_LEN_MAX :
                                       SIXLOWPAN_ND_OPT_6CTX_LEN_MIN);
        return UINT32_MAX;
    }
    ltime = byteorder_ntohs(sixco->ltime);
#ifdef MODULE_GNRC_SIXLOWPAN_CTX
    cid = sixlowpan_nd_opt_6ctx_get_cid(sixco);
    gnrc_sixlowpan_ctx_update(cid, (ipv6_addr_t *)(sixco + 1), sixco->ctx_len,
                              ltime, sixlowpan_nd_opt_6ctx_is_comp(sixco));
#if GNRC_IPV6_NIB_CONF_MULTIHOP_P6C
    assert(abr != NULL);    /* should have been set in _handle_abro() */
    if (ltime == 0) {
        bf_unset(abr->ctxs, cid);
    }
    else {
        bf_set(abr->ctxs, cid);
    }
#endif  /* GNRC_IPV6_NIB_CONF_MULTIHOP_P6C */
#else   /* MODULE_GNRC_SIXLOWPAN_CTX */
    (void)abr;
#endif  /* MODULE_GNRC_SIXLOWPAN_CTX */
    return ltime * SEC_PER_MIN * MS_PER_SEC;
}