selftests/bpf: Fix erroneous bitmask operation
[platform/kernel/linux-rpi.git] / tools / testing / selftests / bpf / progs / test_btf_nokv.c
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright (c) 2018 Facebook */
3 #include <linux/bpf.h>
4 #include <bpf/bpf_helpers.h>
5
6 struct ipv_counts {
7         unsigned int v4;
8         unsigned int v6;
9 };
10
11 struct {
12         __uint(type, BPF_MAP_TYPE_ARRAY);
13         __uint(key_size, sizeof(int));
14         __uint(value_size, sizeof(struct ipv_counts));
15         __uint(max_entries, 4);
16 } btf_map SEC(".maps");
17
18 __attribute__((noinline))
19 int test_long_fname_2(void)
20 {
21         struct ipv_counts *counts;
22         int key = 0;
23
24         counts = bpf_map_lookup_elem(&btf_map, &key);
25         if (!counts)
26                 return 0;
27
28         counts->v6++;
29
30         return 0;
31 }
32
33 __attribute__((noinline))
34 int test_long_fname_1(void)
35 {
36         return test_long_fname_2();
37 }
38
39 SEC("dummy_tracepoint")
40 int _dummy_tracepoint(void *arg)
41 {
42         return test_long_fname_1();
43 }
44
45 char _license[] SEC("license") = "GPL";