1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright (c) 2018 Facebook */
3 #include <linux/bpf.h>
4 #include <bpf/bpf_helpers.h>
5 #include "bpf_legacy.h"
6 
7 int _version SEC("version") = 1;
8 
9 struct ipv_counts {
10 	unsigned int v4;
11 	unsigned int v6;
12 };
13 
14 /* just to validate we can handle maps in multiple sections */
15 struct bpf_map_def SEC("maps") btf_map_legacy = {
16 	.type = BPF_MAP_TYPE_ARRAY,
17 	.key_size = sizeof(int),
18 	.value_size = sizeof(long long),
19 	.max_entries = 4,
20 };
21 
22 BPF_ANNOTATE_KV_PAIR(btf_map_legacy, int, struct ipv_counts);
23 
24 struct {
25 	__uint(type, BPF_MAP_TYPE_ARRAY);
26 	__uint(max_entries, 4);
27 	__type(key, int);
28 	__type(value, struct ipv_counts);
29 } btf_map SEC(".maps");
30 
31 __attribute__((noinline))
32 int test_long_fname_2(void)
33 {
34 	struct ipv_counts *counts;
35 	int key = 0;
36 
37 	counts = bpf_map_lookup_elem(&btf_map, &key);
38 	if (!counts)
39 		return 0;
40 
41 	counts->v6++;
42 
43 	/* just verify we can reference both maps */
44 	counts = bpf_map_lookup_elem(&btf_map_legacy, &key);
45 	if (!counts)
46 		return 0;
47 
48 	return 0;
49 }
50 
51 __attribute__((noinline))
52 int test_long_fname_1(void)
53 {
54 	return test_long_fname_2();
55 }
56 
57 SEC("dummy_tracepoint")
58 int _dummy_tracepoint(void *arg)
59 {
60 	return test_long_fname_1();
61 }
62 
63 char _license[] SEC("license") = "GPL";
64