blob: 8c7ca096ecf2e76bf35c0de30133c66edd19339a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (c) 2018 Facebook */
#include <linux/bpf.h>
#include "bpf_helpers.h"
int _version SEC("version") = 1;
struct ipv_counts {
unsigned int v4;
unsigned int v6;
};
typedef int btf_map_key;
typedef struct ipv_counts btf_map_value;
btf_map_key dumm_key;
btf_map_value dummy_value;
struct bpf_map_def SEC("maps") btf_map = {
.type = BPF_MAP_TYPE_ARRAY,
.key_size = sizeof(int),
.value_size = sizeof(struct ipv_counts),
.max_entries = 4,
};
struct dummy_tracepoint_args {
unsigned long long pad;
struct sock *sock;
};
SEC("dummy_tracepoint")
int _dummy_tracepoint(struct dummy_tracepoint_args *arg)
{
struct ipv_counts *counts;
int key = 0;
if (!arg->sock)
return 0;
counts = bpf_map_lookup_elem(&btf_map, &key);
if (!counts)
return 0;
counts->v6++;
return 0;
}
char _license[] SEC("license") = "GPL";
|
