gnrc_pktsnip_t *gnrc_sixlowpan_nd_opt_abr_build(uint32_t version, uint16_t ltime,
ipv6_addr_t *braddr, gnrc_pktsnip_t *next)
{
gnrc_pktsnip_t *pkt = gnrc_ndp_opt_build(NDP_OPT_ABR, sizeof(sixlowpan_nd_opt_abr_t), next);
if (pkt != NULL) {
sixlowpan_nd_opt_abr_t *abr_opt = pkt->data;
abr_opt->vlow = byteorder_htons(version & 0xffff);
abr_opt->vhigh = byteorder_htons(version >> 16);
abr_opt->ltime = byteorder_htons(ltime);
abr_opt->braddr.u64[0] = braddr->u64[0];
abr_opt->braddr.u64[1] = braddr->u64[1];
}
gnrc_pktsnip_t *gnrc_sixlowpan_nd_opt_ar_build(uint8_t status, uint16_t ltime, eui64_t *eui64,
gnrc_pktsnip_t *next)
{
gnrc_pktsnip_t *pkt = gnrc_ndp_opt_build(NDP_OPT_AR, sizeof(sixlowpan_nd_opt_ar_t), next);
if (pkt != NULL) {
sixlowpan_nd_opt_ar_t *ar_opt = pkt->data;
ar_opt->status = status;
ar_opt->resv[0] = ar_opt->resv[1] = ar_opt->resv[2] = 0;
ar_opt->ltime = byteorder_htons(ltime);
memcpy(&ar_opt->eui64, eui64, sizeof(eui64_t));
}
return pkt;
}
gnrc_pktsnip_t *gnrc_sixlowpan_nd_opt_6ctx_build(uint8_t prefix_len, uint8_t flags, uint16_t ltime,
ipv6_addr_t *prefix, gnrc_pktsnip_t *next)
{
gnrc_pktsnip_t *pkt = gnrc_ndp_opt_build(NDP_OPT_6CTX,
sizeof(sixlowpan_nd_opt_6ctx_t) + (prefix_len / 8),
next);
if (pkt != NULL) {
sixlowpan_nd_opt_6ctx_t *ctx_opt = pkt->data;
ctx_opt->ctx_len = prefix_len;
ctx_opt->resv_c_cid = flags;
ctx_opt->resv.u16 = 0;
ctx_opt->ltime = byteorder_htons(ltime);
/* Bits beyond prefix_len MUST be 0 */
memset(ctx_opt + 1, 0, pkt->size - sizeof(sixlowpan_nd_opt_6ctx_t));
ipv6_addr_init_prefix((ipv6_addr_t *)(ctx_opt + 1), prefix, prefix_len);
}
return pkt;
}
