File: sample_map_ret0.c

package info (click to toggle)
linux 6.1.8-1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,488,076 kB
  • sloc: ansic: 23,401,844; asm: 266,744; sh: 108,976; makefile: 49,705; python: 36,927; perl: 36,810; cpp: 6,044; yacc: 4,904; lex: 2,722; awk: 1,440; ruby: 25; sed: 5
file content (34 lines) | stat: -rw-r--r-- 679 bytes parent folder | download | duplicates (9)
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
/* SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) */
#include <linux/bpf.h>
#include <bpf/bpf_helpers.h>

struct {
	__uint(type, BPF_MAP_TYPE_HASH);
	__type(key, __u32);
	__type(value, long);
	__uint(max_entries, 2);
} htab SEC(".maps");

struct {
	__uint(type, BPF_MAP_TYPE_ARRAY);
	__type(key, __u32);
	__type(value, long);
	__uint(max_entries, 2);
} array SEC(".maps");

/* Sample program which should always load for testing control paths. */
SEC(".text") int func()
{
	__u64 key64 = 0;
	__u32 key = 0;
	long *value;

	value = bpf_map_lookup_elem(&htab, &key);
	if (!value)
		return 1;
	value = bpf_map_lookup_elem(&array, &key64);
	if (!value)
		return 1;

	return 0;
}