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