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

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <test_progs.h>
   3 #include "get_func_ip_test.skel.h"
   4 #include "get_func_ip_uprobe_test.skel.h"
   5
   6 static noinline void uprobe_trigger(void)
   7 {
   8 }
   9
  10 static void test_function_entry(void)
  11 {
  12         struct get_func_ip_test *skel = NULL;
  13         int err, prog_fd;
  14         LIBBPF_OPTS(bpf_test_run_opts, topts);
  15
  16         skel = get_func_ip_test__open();
  17         if (!ASSERT_OK_PTR(skel, "get_func_ip_test__open"))
  18                 return;
  19
  20         err = get_func_ip_test__load(skel);
  21         if (!ASSERT_OK(err, "get_func_ip_test__load"))
  22                 goto cleanup;
  23
  24         err = get_func_ip_test__attach(skel);
  25         if (!ASSERT_OK(err, "get_func_ip_test__attach"))
  26                 goto cleanup;
  27
  28         skel->bss->uprobe_trigger = (unsigned long) uprobe_trigger;
  29
  30         prog_fd = bpf_program__fd(skel->progs.test1);
  31         err = bpf_prog_test_run_opts(prog_fd, &topts);
  32         ASSERT_OK(err, "test_run");
  33         ASSERT_EQ(topts.retval, 0, "test_run");
  34
  35         prog_fd = bpf_program__fd(skel->progs.test5);
  36         err = bpf_prog_test_run_opts(prog_fd, &topts);
  37
  38         ASSERT_OK(err, "test_run");
  39
  40         uprobe_trigger();
  41
  42         ASSERT_EQ(skel->bss->test1_result, 1, "test1_result");
  43         ASSERT_EQ(skel->bss->test2_result, 1, "test2_result");
  44         ASSERT_EQ(skel->bss->test3_result, 1, "test3_result");
  45         ASSERT_EQ(skel->bss->test4_result, 1, "test4_result");
  46         ASSERT_EQ(skel->bss->test5_result, 1, "test5_result");
  47         ASSERT_EQ(skel->bss->test7_result, 1, "test7_result");
  48         ASSERT_EQ(skel->bss->test8_result, 1, "test8_result");
  49
  50 cleanup:
  51         get_func_ip_test__destroy(skel);
  52 }
  53
  54 #ifdef __x86_64__
  55 extern void uprobe_trigger_body(void);
  56 asm(
  57 ".globl uprobe_trigger_body\n"
  58 ".type uprobe_trigger_body, @function\n"
  59 "uprobe_trigger_body:\n"
  60 "       nop\n"
  61 "       ret\n"
  62 );
  63
  64 static void test_function_body_kprobe(void)
  65 {
  66         struct get_func_ip_test *skel = NULL;
  67         LIBBPF_OPTS(bpf_test_run_opts, topts);
  68         LIBBPF_OPTS(bpf_kprobe_opts, kopts);
  69         struct bpf_link *link6 = NULL;
  70         int err, prog_fd;
  71
  72         skel = get_func_ip_test__open();
  73         if (!ASSERT_OK_PTR(skel, "get_func_ip_test__open"))
  74                 return;
  75
  76         /* test6 is x86_64 specific and is disabled by default,
  77          * enable it for body test.
  78          */
  79         bpf_program__set_autoload(skel->progs.test6, true);
  80
  81         err = get_func_ip_test__load(skel);
  82         if (!ASSERT_OK(err, "get_func_ip_test__load"))
  83                 goto cleanup;
  84
  85         kopts.offset = skel->kconfig->CONFIG_X86_KERNEL_IBT ? 9 : 5;
  86
  87         link6 = bpf_program__attach_kprobe_opts(skel->progs.test6, "bpf_fentry_test6", &kopts);
  88         if (!ASSERT_OK_PTR(link6, "link6"))
  89                 goto cleanup;
  90
  91         prog_fd = bpf_program__fd(skel->progs.test1);
  92         err = bpf_prog_test_run_opts(prog_fd, &topts);
  93         ASSERT_OK(err, "test_run");
  94         ASSERT_EQ(topts.retval, 0, "test_run");
  95
  96         ASSERT_EQ(skel->bss->test6_result, 1, "test6_result");
  97
  98 cleanup:
  99         bpf_link__destroy(link6);
 100         get_func_ip_test__destroy(skel);
 101 }
 102
 103 static void test_function_body_uprobe(void)
 104 {
 105         struct get_func_ip_uprobe_test *skel = NULL;
 106         int err;
 107
 108         skel = get_func_ip_uprobe_test__open_and_load();
 109         if (!ASSERT_OK_PTR(skel, "get_func_ip_uprobe_test__open_and_load"))
 110                 return;
 111
 112         err = get_func_ip_uprobe_test__attach(skel);
 113         if (!ASSERT_OK(err, "get_func_ip_test__attach"))
 114                 goto cleanup;
 115
 116         skel->bss->uprobe_trigger_body = (unsigned long) uprobe_trigger_body;
 117
 118         uprobe_trigger_body();
 119
 120         ASSERT_EQ(skel->bss->test1_result, 1, "test1_result");
 121
 122 cleanup:
 123         get_func_ip_uprobe_test__destroy(skel);
 124 }
 125
 126 static void test_function_body(void)
 127 {
 128         test_function_body_kprobe();
 129         test_function_body_uprobe();
 130 }
 131 #else
 132 #define test_function_body()
 133 #endif
 134
 135 void test_get_func_ip_test(void)
 136 {
 137         test_function_entry();
 138         test_function_body();
 139 }