tools/testing/selftests/bpf/progs/fentry_test.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright (c) 2019 Facebook */
   3 #include <linux/bpf.h>
   4 #include <bpf/bpf_helpers.h>
   5 #include <bpf/bpf_tracing.h>
   6
   7 char _license[] SEC("license") = "GPL";
   8
   9 __u64 test1_result = 0;
  10 SEC("fentry/bpf_fentry_test1")
  11 int BPF_PROG(test1, int a)
  12 {
  13         test1_result = a == 1;
  14         return 0;
  15 }
  16
  17 __u64 test2_result = 0;
  18 SEC("fentry/bpf_fentry_test2")
  19 int BPF_PROG(test2, int a, __u64 b)
  20 {
  21         test2_result = a == 2 && b == 3;
  22         return 0;
  23 }
  24
  25 __u64 test3_result = 0;
  26 SEC("fentry/bpf_fentry_test3")
  27 int BPF_PROG(test3, char a, int b, __u64 c)
  28 {
  29         test3_result = a == 4 && b == 5 && c == 6;
  30         return 0;
  31 }
  32
  33 __u64 test4_result = 0;
  34 SEC("fentry/bpf_fentry_test4")
  35 int BPF_PROG(test4, void *a, char b, int c, __u64 d)
  36 {
  37         test4_result = a == (void *)7 && b == 8 && c == 9 && d == 10;
  38         return 0;
  39 }
  40
  41 __u64 test5_result = 0;
  42 SEC("fentry/bpf_fentry_test5")
  43 int BPF_PROG(test5, __u64 a, void *b, short c, int d, __u64 e)
  44 {
  45         test5_result = a == 11 && b == (void *)12 && c == 13 && d == 14 &&
  46                 e == 15;
  47         return 0;
  48 }
  49
  50 __u64 test6_result = 0;
  51 SEC("fentry/bpf_fentry_test6")
  52 int BPF_PROG(test6, __u64 a, void *b, short c, int d, void * e, __u64 f)
  53 {
  54         test6_result = a == 16 && b == (void *)17 && c == 18 && d == 19 &&
  55                 e == (void *)20 && f == 21;
  56         return 0;
  57 }
  58
  59 struct bpf_fentry_test_t {
  60         struct bpf_fentry_test_t *a;
  61 };
  62
  63 __u64 test7_result = 0;
  64 SEC("fentry/bpf_fentry_test7")
  65 int BPF_PROG(test7, struct bpf_fentry_test_t *arg)
  66 {
  67         if (arg == 0)
  68                 test7_result = 1;
  69         return 0;
  70 }
  71
  72 __u64 test8_result = 0;
  73 SEC("fentry/bpf_fentry_test8")
  74 int BPF_PROG(test8, struct bpf_fentry_test_t *arg)
  75 {
  76         if (arg->a == 0)
  77                 test8_result = 1;
  78         return 0;
  79 }