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 #include "timer_failure.skel.h"
   6
   7 static int timer(struct timer *timer_skel)
   8 {
   9         int err, prog_fd;
  10         LIBBPF_OPTS(bpf_test_run_opts, topts);
  11
  12         err = timer__attach(timer_skel);
  13         if (!ASSERT_OK(err, "timer_attach"))
  14                 return err;
  15
  16         ASSERT_EQ(timer_skel->data->callback_check, 52, "callback_check1");
  17         ASSERT_EQ(timer_skel->data->callback2_check, 52, "callback2_check1");
  18
  19         prog_fd = bpf_program__fd(timer_skel->progs.test1);
  20         err = bpf_prog_test_run_opts(prog_fd, &topts);
  21         ASSERT_OK(err, "test_run");
  22         ASSERT_EQ(topts.retval, 0, "test_run");
  23         timer__detach(timer_skel);
  24
  25         usleep(50); /* 10 usecs should be enough, but give it extra */
  26         /* check that timer_cb1() was executed 10+10 times */
  27         ASSERT_EQ(timer_skel->data->callback_check, 42, "callback_check2");
  28         ASSERT_EQ(timer_skel->data->callback2_check, 42, "callback2_check2");
  29
  30         /* check that timer_cb2() was executed twice */
  31         ASSERT_EQ(timer_skel->bss->bss_data, 10, "bss_data");
  32
  33         /* check that timer_cb3() was executed twice */
  34         ASSERT_EQ(timer_skel->bss->abs_data, 12, "abs_data");
  35
  36         /* check that there were no errors in timer execution */
  37         ASSERT_EQ(timer_skel->bss->err, 0, "err");
  38
  39         /* check that code paths completed */
  40         ASSERT_EQ(timer_skel->bss->ok, 1 | 2 | 4, "ok");
  41
  42         return 0;
  43 }
  44
  45 /* TODO: use pid filtering */
  46 void serial_test_timer(void)
  47 {
  48         struct timer *timer_skel = NULL;
  49         int err;
  50
  51         timer_skel = timer__open_and_load();
  52         if (!ASSERT_OK_PTR(timer_skel, "timer_skel_load"))
  53                 return;
  54
  55         err = timer(timer_skel);
  56         ASSERT_OK(err, "timer");
  57         timer__destroy(timer_skel);
  58
  59         RUN_TESTS(timer_failure);
  60 }