1// SPDX-License-Identifier: GPL-2.0
2/* Copyright (c) 2022 Bytedance */
3
4#include <test_progs.h>
5#include "test_map_lookup_percpu_elem.skel.h"
6
7void test_map_lookup_percpu_elem(void)
8{
9	struct test_map_lookup_percpu_elem *skel;
10	__u64 key = 0, sum;
11	int ret, i, nr_cpus = libbpf_num_possible_cpus();
12	__u64 *buf;
13
14	buf = malloc(nr_cpus*sizeof(__u64));
15	if (!ASSERT_OK_PTR(buf, "malloc"))
16		return;
17
18	for (i = 0; i < nr_cpus; i++)
19		buf[i] = i;
20	sum = (nr_cpus - 1) * nr_cpus / 2;
21
22	skel = test_map_lookup_percpu_elem__open();
23	if (!ASSERT_OK_PTR(skel, "test_map_lookup_percpu_elem__open"))
24		goto exit;
25
26	skel->rodata->my_pid = getpid();
27	skel->rodata->nr_cpus = nr_cpus;
28
29	ret = test_map_lookup_percpu_elem__load(skel);
30	if (!ASSERT_OK(ret, "test_map_lookup_percpu_elem__load"))
31		goto cleanup;
32
33	ret = test_map_lookup_percpu_elem__attach(skel);
34	if (!ASSERT_OK(ret, "test_map_lookup_percpu_elem__attach"))
35		goto cleanup;
36
37	ret = bpf_map_update_elem(bpf_map__fd(skel->maps.percpu_array_map), &key, buf, 0);
38	ASSERT_OK(ret, "percpu_array_map update");
39
40	ret = bpf_map_update_elem(bpf_map__fd(skel->maps.percpu_hash_map), &key, buf, 0);
41	ASSERT_OK(ret, "percpu_hash_map update");
42
43	ret = bpf_map_update_elem(bpf_map__fd(skel->maps.percpu_lru_hash_map), &key, buf, 0);
44	ASSERT_OK(ret, "percpu_lru_hash_map update");
45
46	syscall(__NR_getuid);
47
48	test_map_lookup_percpu_elem__detach(skel);
49
50	ASSERT_EQ(skel->bss->percpu_array_elem_sum, sum, "percpu_array lookup percpu elem");
51	ASSERT_EQ(skel->bss->percpu_hash_elem_sum, sum, "percpu_hash lookup percpu elem");
52	ASSERT_EQ(skel->bss->percpu_lru_hash_elem_sum, sum, "percpu_lru_hash lookup percpu elem");
53
54cleanup:
55	test_map_lookup_percpu_elem__destroy(skel);
56exit:
57	free(buf);
58}
59