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

#include "conf-parser.h"
#include "time-util.h"

typedef struct Link Link;
typedef struct Network Network;

typedef enum IPv6AcceptRAStartDHCP6Client {
        IPV6_ACCEPT_RA_START_DHCP6_CLIENT_NO,
        IPV6_ACCEPT_RA_START_DHCP6_CLIENT_ALWAYS,
        IPV6_ACCEPT_RA_START_DHCP6_CLIENT_YES,
        _IPV6_ACCEPT_RA_START_DHCP6_CLIENT_MAX,
        _IPV6_ACCEPT_RA_START_DHCP6_CLIENT_INVALID = -EINVAL,
} IPv6AcceptRAStartDHCP6Client;

typedef struct NDiscRDNSS {
        struct in6_addr router;
        /* This is an absolute point in time, and NOT a timespan/duration.
         * Must be specified with CLOCK_BOOTTIME. */
        usec_t lifetime_usec;
        struct in6_addr address;
} NDiscRDNSS;

typedef struct NDiscDNSSL {
        struct in6_addr router;
        /* This is an absolute point in time, and NOT a timespan/duration.
         * Must be specified with CLOCK_BOOTTIME. */
        usec_t lifetime_usec;
        /* The domain name follows immediately. */
} NDiscDNSSL;

typedef struct NDiscCaptivePortal {
        struct in6_addr router;
        /* This is an absolute point in time, and NOT a timespan/duration.
         * Must be specified with CLOCK_BOOTTIME. */
        usec_t lifetime_usec;
        char *captive_portal;
} NDiscCaptivePortal;

typedef struct NDiscPREF64 {
        struct in6_addr router;
        /* This is an absolute point in time, and NOT a timespan/duration.
         * Must be specified with CLOCK_BOOTTIME. */
        usec_t lifetime_usec;
        uint8_t prefix_len;
        struct in6_addr prefix;
} NDiscPREF64;

static inline char* NDISC_DNSSL_DOMAIN(const NDiscDNSSL *n) {
        return ((char*) n) + ALIGN(sizeof(NDiscDNSSL));
}

bool link_ipv6_accept_ra_enabled(Link *link);

void network_adjust_ipv6_accept_ra(Network *network);

int ndisc_start(Link *link);
int ndisc_stop(Link *link);
void ndisc_flush(Link *link);

int link_request_ndisc(Link *link);

CONFIG_PARSER_PROTOTYPE(config_parse_ipv6_accept_ra_start_dhcp6_client);
CONFIG_PARSER_PROTOTYPE(config_parse_ipv6_accept_ra_use_domains);