esp-idf/components/lwip/port/include/sockets_ext.h

/*
 * SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
 *
 * SPDX-License-Identifier: Apache-2.0
 */
#pragma once
#include <stdbool.h>
#include <stdint.h>

#ifdef __cplusplus
extern "C" {
#endif

#define IPV6_MULTICAST_IF    0x300
#define IPV6_MULTICAST_HOPS  0x301
#define IPV6_MULTICAST_LOOP  0x302

struct lwip_sock;

bool lwip_setsockopt_impl_ext(struct lwip_sock* sock, int level, int optname, const void *optval, uint32_t optlen, int *err);
bool lwip_getsockopt_impl_ext(struct lwip_sock* sock, int level, int optname, void *optval, uint32_t *optlen, int *err);
#ifdef __cplusplus
}
#endif