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[J-linux.git] / tools / testing / selftests / bpf / prog_tests / timer_mim.c
1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (c) 2021 Facebook */
3 #include <test_progs.h>
4 #include "timer_mim.skel.h"
5 #include "timer_mim_reject.skel.h"
6
7 static int timer_mim(struct timer_mim *timer_skel)
8 {
9         __u64 cnt1, cnt2;
10         int err, prog_fd, key1 = 1;
11         LIBBPF_OPTS(bpf_test_run_opts, topts);
12
13         err = timer_mim__attach(timer_skel);
14         if (!ASSERT_OK(err, "timer_attach"))
15                 return err;
16
17         prog_fd = bpf_program__fd(timer_skel->progs.test1);
18         err = bpf_prog_test_run_opts(prog_fd, &topts);
19         ASSERT_OK(err, "test_run");
20         ASSERT_EQ(topts.retval, 0, "test_run");
21         timer_mim__detach(timer_skel);
22
23         /* check that timer_cb[12] are incrementing 'cnt' */
24         cnt1 = READ_ONCE(timer_skel->bss->cnt);
25         for (int i = 0; i < 100; i++) {
26                 cnt2 = READ_ONCE(timer_skel->bss->cnt);
27                 if (cnt2 != cnt1)
28                         break;
29                 usleep(200); /* 100 times more than interval */
30         }
31         ASSERT_GT(cnt2, cnt1, "cnt");
32
33         ASSERT_EQ(timer_skel->bss->err, 0, "err");
34         /* check that code paths completed */
35         ASSERT_EQ(timer_skel->bss->ok, 1 | 2, "ok");
36
37         close(bpf_map__fd(timer_skel->maps.inner_htab));
38         err = bpf_map__delete_elem(timer_skel->maps.outer_arr, &key1, sizeof(key1), 0);
39         ASSERT_EQ(err, 0, "delete inner map");
40
41         /* check that timer_cb[12] are no longer running */
42         cnt1 = READ_ONCE(timer_skel->bss->cnt);
43         for (int i = 0; i < 100; i++) {
44                 usleep(200); /* 100 times more than interval */
45                 cnt2 = READ_ONCE(timer_skel->bss->cnt);
46                 if (cnt2 == cnt1)
47                         break;
48         }
49         ASSERT_EQ(cnt2, cnt1, "cnt");
50
51         return 0;
52 }
53
54 void serial_test_timer_mim(void)
55 {
56         struct timer_mim_reject *timer_reject_skel = NULL;
57         libbpf_print_fn_t old_print_fn = NULL;
58         struct timer_mim *timer_skel = NULL;
59         int err;
60
61         old_print_fn = libbpf_set_print(NULL);
62         timer_reject_skel = timer_mim_reject__open_and_load();
63         libbpf_set_print(old_print_fn);
64         if (!ASSERT_ERR_PTR(timer_reject_skel, "timer_reject_skel_load"))
65                 goto cleanup;
66
67         timer_skel = timer_mim__open_and_load();
68         if (!ASSERT_OK_PTR(timer_skel, "timer_skel_load"))
69                 goto cleanup;
70
71         err = timer_mim(timer_skel);
72         ASSERT_OK(err, "timer_mim");
73 cleanup:
74         timer_mim__destroy(timer_skel);
75         timer_mim_reject__destroy(timer_reject_skel);
76 }
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