ng_pktsnip_t *ng_icmpv6_echo_build(uint8_t type, uint16_t id, uint16_t seq,
uint8_t *data, size_t data_len)
{
ng_pktsnip_t *pkt;
ng_icmpv6_echo_t *echo;
if ((pkt = ng_icmpv6_build(NULL, type, 0, data_len + sizeof(ng_icmpv6_echo_t))) == NULL) {
return NULL;
}
DEBUG("icmpv6_echo: Building echo message with type=%" PRIu8 "id=%" PRIu16
", seq=%" PRIu16, type, id, seq);
echo = (ng_icmpv6_echo_t *)pkt->data;
echo->id = byteorder_htons(id);
echo->seq = byteorder_htons(seq);
if (data != NULL) {
memcpy(echo + 1, data, data_len);
#if defined(MODULE_OD) && ENABLE_DEBUG
DEBUG(", payload:\n");
od_hex_dump(data, data_len, OD_WIDTH_DEFAULT);
#endif
DEBUG("\n");
}
#if ENABLE_DEBUG
else {
DEBUG("\n");
}
#endif
return pkt;
}
ng_pktsnip_t *ng_ndp_nbr_adv_build(uint8_t flags, ng_ipv6_addr_t *tgt,
ng_pktsnip_t *options)
{
ng_pktsnip_t *pkt;
ng_ndp_nbr_adv_t *nbr_adv;
DEBUG("ndp: building neighbor advertisement message\n");
if (ng_ipv6_addr_is_multicast(tgt)) {
DEBUG("ndp: tgt must not be multicast\n");
return NULL;
}
pkt = ng_icmpv6_build(options, NG_ICMPV6_NBR_ADV, 0, sizeof(ng_ndp_nbr_adv_t));
if (pkt == NULL) {
return NULL;
}
nbr_adv = pkt->data;
nbr_adv->flags = (flags & NG_NDP_NBR_ADV_FLAGS_MASK);
nbr_adv->resv[0] = nbr_adv->resv[1] = nbr_adv->resv[2] = 0;
memcpy(&nbr_adv->tgt, tgt, sizeof(ng_ipv6_addr_t));
return pkt;
}
ng_pktsnip_t *ng_ndp_nbr_sol_build(ng_ipv6_addr_t *tgt, ng_pktsnip_t *options)
{
ng_pktsnip_t *pkt;
DEBUG("ndp: building neighbor solicitation message\n");
if (ng_ipv6_addr_is_multicast(tgt)) {
DEBUG("ndp: tgt must not be multicast\n");
return NULL;
}
pkt = ng_icmpv6_build(options, NG_ICMPV6_NBR_SOL, 0, sizeof(ng_ndp_nbr_sol_t));
if (pkt != NULL) {
ng_ndp_nbr_sol_t *nbr_sol = pkt->data;
nbr_sol->resv.u32 = 0;
nbr_sol->tgt.u64[0].u64 = tgt->u64[0].u64;
nbr_sol->tgt.u64[1].u64 = tgt->u64[1].u64;
}
return pkt;
}
