1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (c) 2021 Facebook */
3 #include <test_progs.h>
4 #include "recursion.skel.h"
5
6 void test_recursion(void)
7 {
8 struct bpf_prog_info prog_info = {};
9 __u32 prog_info_len = sizeof(prog_info);
10 struct recursion *skel;
11 int key = 0;
12 int err;
13
14 skel = recursion__open_and_load();
15 if (!ASSERT_OK_PTR(skel, "skel_open_and_load"))
16 return;
17
18 err = recursion__attach(skel);
19 if (!ASSERT_OK(err, "skel_attach"))
20 goto out;
21
22 ASSERT_EQ(skel->bss->pass1, 0, "pass1 == 0");
23 bpf_map_delete_elem(bpf_map__fd(skel->maps.hash1), &key);
24 ASSERT_EQ(skel->bss->pass1, 1, "pass1 == 1");
25 bpf_map_delete_elem(bpf_map__fd(skel->maps.hash1), &key);
26 ASSERT_EQ(skel->bss->pass1, 2, "pass1 == 2");
27
28 ASSERT_EQ(skel->bss->pass2, 0, "pass2 == 0");
29 bpf_map_delete_elem(bpf_map__fd(skel->maps.hash2), &key);
30 ASSERT_EQ(skel->bss->pass2, 1, "pass2 == 1");
31 bpf_map_delete_elem(bpf_map__fd(skel->maps.hash2), &key);
32 ASSERT_EQ(skel->bss->pass2, 2, "pass2 == 2");
33
34 err = bpf_prog_get_info_by_fd(bpf_program__fd(skel->progs.on_delete),
35 &prog_info, &prog_info_len);
36 if (!ASSERT_OK(err, "get_prog_info"))
37 goto out;
38 ASSERT_EQ(prog_info.recursion_misses, 2, "recursion_misses");
39 out:
40 recursion__destroy(skel);
41 }
42
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