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Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) */
2#include <linux/bpf.h>
3#include <bpf/bpf_helpers.h>
4
5struct {
6 __uint(type, BPF_MAP_TYPE_HASH);
7 __type(key, __u32);
8 __type(value, long);
9 __uint(max_entries, 2);
10} htab SEC(".maps");
11
12struct {
13 __uint(type, BPF_MAP_TYPE_ARRAY);
14 __type(key, __u32);
15 __type(value, long);
16 __uint(max_entries, 2);
17} array SEC(".maps");
18
19/* Sample program which should always load for testing control paths. */
20SEC("xdp") int func()
21{
22 __u64 key64 = 0;
23 __u32 key = 0;
24 long *value;
25
26 value = bpf_map_lookup_elem(&htab, &key);
27 if (!value)
28 return 1;
29 value = bpf_map_lookup_elem(&array, &key64);
30 if (!value)
31 return 1;
32
33 return 0;
34}