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/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 
14 int _version SEC("version") = 1;
15 
16 struct {
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 
23 SEC("test_obj_id_dummy")
24 int 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 }
33