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 struct {
13 	__uint(type, BPF_MAP_TYPE_ARRAY);
14 	__uint(max_entries, 4);
15 	__type(key, int);
16 	__type(value, struct ipv_counts);
17 } btf_map SEC(".maps");
18 
19 __attribute__((noinline))
20 int test_long_fname_2(void)
21 {
22 	struct ipv_counts *counts;
23 	int key = 0;
24 
25 	counts = bpf_map_lookup_elem(&btf_map, &key);
26 	if (!counts)
27 		return 0;
28 
29 	counts->v6++;
30 
31 	return 0;
32 }
33 
34 __attribute__((noinline))
35 int test_long_fname_1(void)
36 {
37 	return test_long_fname_2();
38 }
39 
40 SEC("dummy_tracepoint")
41 int _dummy_tracepoint(void *arg)
42 {
43 	return test_long_fname_1();
44 }
45 
46 char _license[] SEC("license") = "GPL";
47