tools/testing/selftests/bpf/prog_tests/timer.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright (c) 2021 Facebook */
   3 #include <test_progs.h>
   4 #include "timer.skel.h"
   5
   6 static int timer(struct timer *timer_skel)
   7 {
   8         int err, prog_fd;
   9         LIBBPF_OPTS(bpf_test_run_opts, topts);
  10
  11         err = timer__attach(timer_skel);
  12         if (!ASSERT_OK(err, "timer_attach"))
  13                 return err;
  14
  15         ASSERT_EQ(timer_skel->data->callback_check, 52, "callback_check1");
  16         ASSERT_EQ(timer_skel->data->callback2_check, 52, "callback2_check1");
  17
  18         prog_fd = bpf_program__fd(timer_skel->progs.test1);
  19         err = bpf_prog_test_run_opts(prog_fd, &topts);
  20         ASSERT_OK(err, "test_run");
  21         ASSERT_EQ(topts.retval, 0, "test_run");
  22         timer__detach(timer_skel);
  23
  24         usleep(50); /* 10 usecs should be enough, but give it extra */
  25         /* check that timer_cb1() was executed 10+10 times */
  26         ASSERT_EQ(timer_skel->data->callback_check, 42, "callback_check2");
  27         ASSERT_EQ(timer_skel->data->callback2_check, 42, "callback2_check2");
  28
  29         /* check that timer_cb2() was executed twice */
  30         ASSERT_EQ(timer_skel->bss->bss_data, 10, "bss_data");
  31
  32         /* check that timer_cb3() was executed twice */
  33         ASSERT_EQ(timer_skel->bss->abs_data, 12, "abs_data");
  34
  35         /* check that there were no errors in timer execution */
  36         ASSERT_EQ(timer_skel->bss->err, 0, "err");
  37
  38         /* check that code paths completed */
  39         ASSERT_EQ(timer_skel->bss->ok, 1 | 2 | 4, "ok");
  40
  41         return 0;
  42 }
  43
  44 /* TODO: use pid filtering */
  45 void serial_test_timer(void)
  46 {
  47         struct timer *timer_skel = NULL;
  48         int err;
  49
  50         timer_skel = timer__open_and_load();
  51         if (!ASSERT_OK_PTR(timer_skel, "timer_skel_load"))
  52                 goto cleanup;
  53
  54         err = timer(timer_skel);
  55         ASSERT_OK(err, "timer");
  56 cleanup:
  57         timer__destroy(timer_skel);
  58 }