ndp.h

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/*
 * SPDX-FileCopyrightText: 2017 Freie Universität Berlin
 * SPDX-License-Identifier: LGPL-2.1-only
 */
 
#pragma once

 
#include <stdint.h>
 
#include "compiler_hints.h"
#include "net/gnrc/pkt.h"
#include "net/gnrc/netif.h"
#include "net/ipv6/addr.h"
#include "net/ipv6/hdr.h"
 
#ifdef __cplusplus
extern "C" {
#endif

#ifndef GNRC_NETTYPE_NDP
# if    defined(MODULE_GNRC_IPV6) || DOXYGEN
#  define GNRC_NETTYPE_NDP (GNRC_NETTYPE_IPV6)      /* usual configuration */
# else
#  define GNRC_NETTYPE_NDP (GNRC_NETTYPE_UNDEF)     /* for testing */
# endif
#endif  /* GNRC_NETTYPE_NDP */

gnrc_pktsnip_t *gnrc_ndp_nbr_sol_build(const ipv6_addr_t *tgt,
                                       gnrc_pktsnip_t *options);

gnrc_pktsnip_t *gnrc_ndp_nbr_adv_build(const ipv6_addr_t *tgt, uint8_t flags,
                                       gnrc_pktsnip_t *options);

gnrc_pktsnip_t *gnrc_ndp_rtr_sol_build(gnrc_pktsnip_t *options);

gnrc_pktsnip_t *gnrc_ndp_rtr_adv_build(uint8_t cur_hl, uint8_t flags,
                                       uint16_t ltime, uint32_t reach_time,
                                       uint32_t retrans_timer,
                                       gnrc_pktsnip_t *options);

gnrc_pktsnip_t *gnrc_ndp_opt_build(uint8_t type, size_t size,
                                   gnrc_pktsnip_t *next);

ACCESS(read_only, 1, 2)
gnrc_pktsnip_t *gnrc_ndp_opt_sl2a_build(const uint8_t *l2addr,
                                        uint8_t l2addr_len,
                                        gnrc_pktsnip_t *next);

ACCESS(read_only, 1, 2)
gnrc_pktsnip_t *gnrc_ndp_opt_tl2a_build(const uint8_t *l2addr,
                                        uint8_t l2addr_len,
                                        gnrc_pktsnip_t *next);

gnrc_pktsnip_t *gnrc_ndp_opt_pi_build(const ipv6_addr_t *prefix,
                                      uint8_t prefix_len,
                                      uint32_t valid_ltime, uint32_t pref_ltime,
                                      uint8_t flags, gnrc_pktsnip_t *next);
gnrc_pktsnip_t *gnrc_ndp_opt_ri_build(const ipv6_addr_t *prefix,
                                      uint8_t prefix_len,
                                      uint32_t route_ltime,
                                      uint8_t flags, gnrc_pktsnip_t *next);

gnrc_pktsnip_t *gnrc_ndp_opt_mtu_build(uint32_t mtu, gnrc_pktsnip_t *next);

ACCESS(read_only, 2, 3)
gnrc_pktsnip_t *gnrc_ndp_opt_rdnss_build(uint32_t lifetime,
                                         const ipv6_addr_t *addrs,
                                         unsigned addrs_num,
                                         gnrc_pktsnip_t *next);

void gnrc_ndp_nbr_sol_send(const ipv6_addr_t *tgt, gnrc_netif_t *netif,
                           const ipv6_addr_t *src, const ipv6_addr_t *dst,
                           gnrc_pktsnip_t *ext_opts);

void gnrc_ndp_nbr_adv_send(const ipv6_addr_t *tgt, gnrc_netif_t *netif,
                           const ipv6_addr_t *dst, bool supply_tl2a,
                           gnrc_pktsnip_t *ext_opts);

void gnrc_ndp_rtr_sol_send(gnrc_netif_t *netif, const ipv6_addr_t *dst);

void gnrc_ndp_rtr_adv_send(gnrc_netif_t *netif, const ipv6_addr_t *src,
                           const ipv6_addr_t *dst, bool fin,
                           gnrc_pktsnip_t *ext_opts);
 
#ifdef __cplusplus
}
#endif