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

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <test_progs.h>
   3 #include "kprobe_multi.skel.h"
   4 #include "trace_helpers.h"
   5 #include "bpf/libbpf_internal.h"
   6
   7 static struct ksyms *ksyms;
   8
   9 static void kprobe_multi_testmod_check(struct kprobe_multi *skel)
  10 {
  11         ASSERT_EQ(skel->bss->kprobe_testmod_test1_result, 1, "kprobe_test1_result");
  12         ASSERT_EQ(skel->bss->kprobe_testmod_test2_result, 1, "kprobe_test2_result");
  13         ASSERT_EQ(skel->bss->kprobe_testmod_test3_result, 1, "kprobe_test3_result");
  14
  15         ASSERT_EQ(skel->bss->kretprobe_testmod_test1_result, 1, "kretprobe_test1_result");
  16         ASSERT_EQ(skel->bss->kretprobe_testmod_test2_result, 1, "kretprobe_test2_result");
  17         ASSERT_EQ(skel->bss->kretprobe_testmod_test3_result, 1, "kretprobe_test3_result");
  18 }
  19
  20 static void test_testmod_attach_api(struct bpf_kprobe_multi_opts *opts)
  21 {
  22         struct kprobe_multi *skel = NULL;
  23
  24         skel = kprobe_multi__open_and_load();
  25         if (!ASSERT_OK_PTR(skel, "fentry_raw_skel_load"))
  26                 return;
  27
  28         skel->bss->pid = getpid();
  29
  30         skel->links.test_kprobe_testmod = bpf_program__attach_kprobe_multi_opts(
  31                                                 skel->progs.test_kprobe_testmod,
  32                                                 NULL, opts);
  33         if (!skel->links.test_kprobe_testmod)
  34                 goto cleanup;
  35
  36         opts->retprobe = true;
  37         skel->links.test_kretprobe_testmod = bpf_program__attach_kprobe_multi_opts(
  38                                                 skel->progs.test_kretprobe_testmod,
  39                                                 NULL, opts);
  40         if (!skel->links.test_kretprobe_testmod)
  41                 goto cleanup;
  42
  43         ASSERT_OK(trigger_module_test_read(1), "trigger_read");
  44         kprobe_multi_testmod_check(skel);
  45
  46 cleanup:
  47         kprobe_multi__destroy(skel);
  48 }
  49
  50 static void test_testmod_attach_api_addrs(void)
  51 {
  52         LIBBPF_OPTS(bpf_kprobe_multi_opts, opts);
  53         unsigned long long addrs[3];
  54
  55         addrs[0] = ksym_get_addr_local(ksyms, "bpf_testmod_fentry_test1");
  56         ASSERT_NEQ(addrs[0], 0, "ksym_get_addr_local");
  57         addrs[1] = ksym_get_addr_local(ksyms, "bpf_testmod_fentry_test2");
  58         ASSERT_NEQ(addrs[1], 0, "ksym_get_addr_local");
  59         addrs[2] = ksym_get_addr_local(ksyms, "bpf_testmod_fentry_test3");
  60         ASSERT_NEQ(addrs[2], 0, "ksym_get_addr_local");
  61
  62         opts.addrs = (const unsigned long *) addrs;
  63         opts.cnt = ARRAY_SIZE(addrs);
  64
  65         test_testmod_attach_api(&opts);
  66 }
  67
  68 static void test_testmod_attach_api_syms(void)
  69 {
  70         LIBBPF_OPTS(bpf_kprobe_multi_opts, opts);
  71         const char *syms[3] = {
  72                 "bpf_testmod_fentry_test1",
  73                 "bpf_testmod_fentry_test2",
  74                 "bpf_testmod_fentry_test3",
  75         };
  76
  77         opts.syms = syms;
  78         opts.cnt = ARRAY_SIZE(syms);
  79         test_testmod_attach_api(&opts);
  80 }
  81
  82 void serial_test_kprobe_multi_testmod_test(void)
  83 {
  84         ksyms = load_kallsyms_local();
  85         if (!ASSERT_OK_PTR(ksyms, "load_kallsyms_local"))
  86                 return;
  87
  88         if (test__start_subtest("testmod_attach_api_syms"))
  89                 test_testmod_attach_api_syms();
  90
  91         if (test__start_subtest("testmod_attach_api_addrs"))
  92                 test_testmod_attach_api_addrs();
  93
  94         free_kallsyms_local(ksyms);
  95 }