/* SPDX-License-Identifier: GPL-2.0-only *//* Copyright (c) 2017 Facebook */#ifndef __MAP_IN_MAP_H__#define __MAP_IN_MAP_H__ #include <linux/types.h> struct file;struct bpf_map; struct bpf_map *bpf_map_meta_alloc(int inner_map_ufd);void bpf_map_meta_free(struct bpf_map *map_meta);void *bpf_map_fd_get_ptr(struct bpf_map *map, struct file *map_file,			 int ufd);void bpf_map_fd_put_ptr(struct bpf_map *map, void *ptr, bool need_defer);u32 bpf_map_fd_sys_lookup_elem(void *ptr); #endif