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

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright (c) 2019 Facebook */
   3
   4 #include <test_progs.h>
   5
   6 struct s {
   7         int a;
   8         long long b;
   9 } __attribute__((packed));
  10
  11 #include "test_skeleton.skel.h"
  12
  13 void test_skeleton(void)
  14 {
  15         int duration = 0, err;
  16         struct test_skeleton* skel;
  17         struct test_skeleton__bss *bss;
  18         struct test_skeleton__kconfig *kcfg;
  19
  20         skel = test_skeleton__open();
  21         if (CHECK(!skel, "skel_open", "failed to open skeleton\n"))
  22                 return;
  23
  24         if (CHECK(skel->kconfig, "skel_kconfig", "kconfig is mmaped()!\n"))
  25                 goto cleanup;
  26
  27         err = test_skeleton__load(skel);
  28         if (CHECK(err, "skel_load", "failed to load skeleton: %d\n", err))
  29                 goto cleanup;
  30
  31         bss = skel->bss;
  32         bss->in1 = 1;
  33         bss->in2 = 2;
  34         bss->in3 = 3;
  35         bss->in4 = 4;
  36         bss->in5.a = 5;
  37         bss->in5.b = 6;
  38         kcfg = skel->kconfig;
  39
  40         err = test_skeleton__attach(skel);
  41         if (CHECK(err, "skel_attach", "skeleton attach failed: %d\n", err))
  42                 goto cleanup;
  43
  44         /* trigger tracepoint */
  45         usleep(1);
  46
  47         CHECK(bss->out1 != 1, "res1", "got %d != exp %d\n", bss->out1, 1);
  48         CHECK(bss->out2 != 2, "res2", "got %lld != exp %d\n", bss->out2, 2);
  49         CHECK(bss->out3 != 3, "res3", "got %d != exp %d\n", (int)bss->out3, 3);
  50         CHECK(bss->out4 != 4, "res4", "got %lld != exp %d\n", bss->out4, 4);
  51         CHECK(bss->handler_out5.a != 5, "res5", "got %d != exp %d\n",
  52               bss->handler_out5.a, 5);
  53         CHECK(bss->handler_out5.b != 6, "res6", "got %lld != exp %d\n",
  54               bss->handler_out5.b, 6);
  55
  56         CHECK(bss->bpf_syscall != kcfg->CONFIG_BPF_SYSCALL, "ext1",
  57               "got %d != exp %d\n", bss->bpf_syscall, kcfg->CONFIG_BPF_SYSCALL);
  58         CHECK(bss->kern_ver != kcfg->LINUX_KERNEL_VERSION, "ext2",
  59               "got %d != exp %d\n", bss->kern_ver, kcfg->LINUX_KERNEL_VERSION);
  60
  61 cleanup:
  62         test_skeleton__destroy(skel);
  63 }