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
test_map_lookup_percpu_elem(void)7 void 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
54 cleanup:
55 test_map_lookup_percpu_elem__destroy(skel);
56 exit:
57 free(buf);
58 }
59