/* SPDX-License-Identifier: LGPL-2.1-or-later */
#pragma once

/***
  Copyright © 2014 Intel Corporation. All rights reserved.
***/

#include "sd-ndisc.h"

#include "log-link.h"
#include "time-util.h"

#define NDISC_ROUTER_SOLICITATION_INTERVAL (4U * USEC_PER_SEC)
#define NDISC_MAX_ROUTER_SOLICITATION_INTERVAL (3600U * USEC_PER_SEC)
#define NDISC_MAX_ROUTER_SOLICITATIONS 3U

struct sd_ndisc {
        unsigned n_ref;

        int ifindex;
        char *ifname;
        int fd;

        sd_event *event;
        int event_priority;

        struct ether_addr mac_addr;
        uint8_t hop_limit;
        uint32_t mtu;

        sd_event_source *recv_event_source;
        sd_event_source *timeout_event_source;
        sd_event_source *timeout_no_ra;

        usec_t retransmit_time;

        sd_ndisc_callback_t callback;
        void *userdata;
};

const char* ndisc_event_to_string(sd_ndisc_event_t e) _const_;
sd_ndisc_event_t ndisc_event_from_string(const char *s) _pure_;

#define log_ndisc_errno(ndisc, error, fmt, ...)         \
        log_interface_prefix_full_errno(                \
                "NDISC: ",                              \
                sd_ndisc_get_ifname(ndisc),             \
                error, fmt, ##__VA_ARGS__)
#define log_ndisc(ndisc, fmt, ...)                      \
        log_interface_prefix_full_errno_zerook(         \
                "NDISC: ",                              \
                sd_ndisc_get_ifname(ndisc),             \
                0, fmt, ##__VA_ARGS__)