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 struct ipv_counts {
8 	unsigned int v4;
9 	unsigned int v6;
10 };
11 
12 #pragma GCC diagnostic push
13 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
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 #pragma GCC diagnostic pop
22 
23 BPF_ANNOTATE_KV_PAIR(btf_map_legacy, int, struct ipv_counts);
24 
25 struct {
26 	__uint(type, BPF_MAP_TYPE_ARRAY);
27 	__uint(max_entries, 4);
28 	__type(key, int);
29 	__type(value, struct ipv_counts);
30 } btf_map SEC(".maps");
31 
32 __attribute__((noinline))
33 int test_long_fname_2(void)
34 {
35 	struct ipv_counts *counts;
36 	int key = 0;
37 
38 	counts = bpf_map_lookup_elem(&btf_map, &key);
39 	if (!counts)
40 		return 0;
41 
42 	counts->v6++;
43 
44 	/* just verify we can reference both maps */
45 	counts = bpf_map_lookup_elem(&btf_map_legacy, &key);
46 	if (!counts)
47 		return 0;
48 
49 	return 0;
50 }
51 
52 __attribute__((noinline))
53 int test_long_fname_1(void)
54 {
55 	return test_long_fname_2();
56 }
57 
58 SEC("dummy_tracepoint")
59 int _dummy_tracepoint(void *arg)
60 {
61 	return test_long_fname_1();
62 }
63 
64 char _license[] SEC("license") = "GPL";
65