/* icmp.h
 *
 * Copyright (c) 2019-2023 Apple Inc. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * This code contains global declarations relating to ICMP I/O functions and data structures for the Thread border
 * router.
 */

struct icmp_listener {
    io_t *NULLABLE io_state;
    int sock;
    uint32_t unsolicited_interval;
};
extern icmp_listener_t icmp_listener;

void icmp_message_free(icmp_message_t *NONNULL message);
void neighbor_solicit_send(interface_t *NONNULL interface, struct in6_addr *NONNULL destination);
void icmp_message_dump(icmp_message_t *NONNULL message,
                       struct in6_addr *NONNULL source_address, struct in6_addr *NONNULL destination_address);
void set_router_mode(interface_t *NONNULL interface, int mode);
void icmp_interface_subscribe(interface_t *NONNULL interface, bool added);
bool start_icmp_listener(void);
void neighbor_solicit_send(interface_t *NONNULL interface, struct in6_addr *NONNULL destination);
void router_solicit_send(interface_t *NONNULL interface);
void router_advertisement_send(interface_t *NONNULL interface, const struct in6_addr *NONNULL destination);

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