1/* SPDX-License-Identifier: GPL-2.0-only */
 2/* Copyright (c) 2017 Facebook
 3 */
 4#ifndef __MAP_IN_MAP_H__
 5#define __MAP_IN_MAP_H__
 6
 7#include <linux/types.h>
 8
 9struct file;
10struct bpf_map;
11
12struct bpf_map *bpf_map_meta_alloc(int inner_map_ufd);
13void bpf_map_meta_free(struct bpf_map *map_meta);
14void *bpf_map_fd_get_ptr(struct bpf_map *map, struct file *map_file,
15			 int ufd);
16void bpf_map_fd_put_ptr(struct bpf_map *map, void *ptr, bool need_defer);
17u32 bpf_map_fd_sys_lookup_elem(void *ptr);
18
19#endif