1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright (c) 2018 Facebook */
3 #include <linux/bpf.h>
4 #include "bpf_helpers.h"
5 
6 int _version SEC("version") = 1;
7 
8 struct ipv_counts {
9 	unsigned int v4;
10 	unsigned int v6;
11 };
12 
13 struct 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 
20 BPF_ANNOTATE_KV_PAIR(btf_map, int, struct ipv_counts);
21 
22 struct dummy_tracepoint_args {
23 	unsigned long long pad;
24 	struct sock *sock;
25 };
26 
27 __attribute__((noinline))
test_long_fname_2(struct dummy_tracepoint_args * arg)28 static 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))
test_long_fname_1(struct dummy_tracepoint_args * arg)46 static int test_long_fname_1(struct dummy_tracepoint_args *arg)
47 {
48 	return test_long_fname_2(arg);
49 }
50 
51 SEC("dummy_tracepoint")
_dummy_tracepoint(struct dummy_tracepoint_args * arg)52 int _dummy_tracepoint(struct dummy_tracepoint_args *arg)
53 {
54 	return test_long_fname_1(arg);
55 }
56 
57 char _license[] SEC("license") = "GPL";
58