1// SPDX-License-Identifier: GPL-2.0-only
 2/* Copyright (c) 2017 Facebook
 3 */
 4#include <stddef.h>
 5#include <linux/bpf.h>
 6#include <linux/pkt_cls.h>
 7#include "bpf_helpers.h"
 8
 9/* It is a dumb bpf program such that it must have no
10 * issue to be loaded since testing the verifier is
11 * not the focus here.
12 */
13
14int _version SEC("version") = 1;
15
16struct {
17	__uint(type, BPF_MAP_TYPE_ARRAY);
18	__uint(max_entries, 1);
19	__type(key, __u32);
20	__type(value, __u64);
21} test_map_id SEC(".maps");
22
23SEC("test_obj_id_dummy")
24int test_obj_id(struct __sk_buff *skb)
25{
26	__u32 key = 0;
27	__u64 *value;
28
29	value = bpf_map_lookup_elem(&test_map_id, &key);
30
31	return TC_ACT_OK;
32}