xref: /linux/tools/testing/selftests/bpf/progs/tracing_struct.c (revision a1ff5a7d78a036d6c2178ee5acd6ba4946243800)
1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (c) 2022 Meta Platforms, Inc. and affiliates. */
3 
4 #include <vmlinux.h>
5 #include <bpf/bpf_tracing.h>
6 #include <bpf/bpf_helpers.h>
7 
8 struct bpf_testmod_struct_arg_1 {
9 	int a;
10 };
11 struct bpf_testmod_struct_arg_2 {
12 	long a;
13 	long b;
14 };
15 
16 struct bpf_testmod_struct_arg_3 {
17 	int a;
18 	int b[];
19 };
20 
21 long t1_a_a, t1_a_b, t1_b, t1_c, t1_ret, t1_nregs;
22 __u64 t1_reg0, t1_reg1, t1_reg2, t1_reg3;
23 long t2_a, t2_b_a, t2_b_b, t2_c, t2_ret;
24 long t3_a, t3_b, t3_c_a, t3_c_b, t3_ret;
25 long t4_a_a, t4_b, t4_c, t4_d, t4_e_a, t4_e_b, t4_ret;
26 long t5_ret;
27 int t6;
28 
29 SEC("fentry/bpf_testmod_test_struct_arg_1")
BPF_PROG2(test_struct_arg_1,struct bpf_testmod_struct_arg_2,a,int,b,int,c)30 int BPF_PROG2(test_struct_arg_1, struct bpf_testmod_struct_arg_2, a, int, b, int, c)
31 {
32 	t1_a_a = a.a;
33 	t1_a_b = a.b;
34 	t1_b = b;
35 	t1_c = c;
36 	return 0;
37 }
38 
39 SEC("fexit/bpf_testmod_test_struct_arg_1")
BPF_PROG2(test_struct_arg_2,struct bpf_testmod_struct_arg_2,a,int,b,int,c,int,ret)40 int BPF_PROG2(test_struct_arg_2, struct bpf_testmod_struct_arg_2, a, int, b, int, c, int, ret)
41 {
42 	t1_nregs =  bpf_get_func_arg_cnt(ctx);
43 	/* a.a */
44 	bpf_get_func_arg(ctx, 0, &t1_reg0);
45 	/* a.b */
46 	bpf_get_func_arg(ctx, 1, &t1_reg1);
47 	/* b */
48 	bpf_get_func_arg(ctx, 2, &t1_reg2);
49 	t1_reg2 = (int)t1_reg2;
50 	/* c */
51 	bpf_get_func_arg(ctx, 3, &t1_reg3);
52 	t1_reg3 = (int)t1_reg3;
53 
54 	t1_ret = ret;
55 	return 0;
56 }
57 
58 SEC("fentry/bpf_testmod_test_struct_arg_2")
BPF_PROG2(test_struct_arg_3,int,a,struct bpf_testmod_struct_arg_2,b,int,c)59 int BPF_PROG2(test_struct_arg_3, int, a, struct bpf_testmod_struct_arg_2, b, int, c)
60 {
61 	t2_a = a;
62 	t2_b_a = b.a;
63 	t2_b_b = b.b;
64 	t2_c = c;
65 	return 0;
66 }
67 
68 SEC("fexit/bpf_testmod_test_struct_arg_2")
BPF_PROG2(test_struct_arg_4,int,a,struct bpf_testmod_struct_arg_2,b,int,c,int,ret)69 int BPF_PROG2(test_struct_arg_4, int, a, struct bpf_testmod_struct_arg_2, b, int, c, int, ret)
70 {
71 	t2_ret = ret;
72 	return 0;
73 }
74 
75 SEC("fentry/bpf_testmod_test_struct_arg_3")
BPF_PROG2(test_struct_arg_5,int,a,int,b,struct bpf_testmod_struct_arg_2,c)76 int BPF_PROG2(test_struct_arg_5, int, a, int, b, struct bpf_testmod_struct_arg_2, c)
77 {
78 	t3_a = a;
79 	t3_b = b;
80 	t3_c_a = c.a;
81 	t3_c_b = c.b;
82 	return 0;
83 }
84 
85 SEC("fexit/bpf_testmod_test_struct_arg_3")
BPF_PROG2(test_struct_arg_6,int,a,int,b,struct bpf_testmod_struct_arg_2,c,int,ret)86 int BPF_PROG2(test_struct_arg_6, int, a, int, b, struct bpf_testmod_struct_arg_2, c, int, ret)
87 {
88 	t3_ret = ret;
89 	return 0;
90 }
91 
92 SEC("fentry/bpf_testmod_test_struct_arg_4")
BPF_PROG2(test_struct_arg_7,struct bpf_testmod_struct_arg_1,a,int,b,int,c,int,d,struct bpf_testmod_struct_arg_2,e)93 int BPF_PROG2(test_struct_arg_7, struct bpf_testmod_struct_arg_1, a, int, b,
94 	     int, c, int, d, struct bpf_testmod_struct_arg_2, e)
95 {
96 	t4_a_a = a.a;
97 	t4_b = b;
98 	t4_c = c;
99 	t4_d = d;
100 	t4_e_a = e.a;
101 	t4_e_b = e.b;
102 	return 0;
103 }
104 
105 SEC("fexit/bpf_testmod_test_struct_arg_4")
BPF_PROG2(test_struct_arg_8,struct bpf_testmod_struct_arg_1,a,int,b,int,c,int,d,struct bpf_testmod_struct_arg_2,e,int,ret)106 int BPF_PROG2(test_struct_arg_8, struct bpf_testmod_struct_arg_1, a, int, b,
107 	     int, c, int, d, struct bpf_testmod_struct_arg_2, e, int, ret)
108 {
109 	t4_ret = ret;
110 	return 0;
111 }
112 
113 SEC("fentry/bpf_testmod_test_struct_arg_5")
BPF_PROG2(test_struct_arg_9)114 int BPF_PROG2(test_struct_arg_9)
115 {
116 	return 0;
117 }
118 
119 SEC("fexit/bpf_testmod_test_struct_arg_5")
BPF_PROG2(test_struct_arg_10,int,ret)120 int BPF_PROG2(test_struct_arg_10, int, ret)
121 {
122 	t5_ret = ret;
123 	return 0;
124 }
125 
126 SEC("fentry/bpf_testmod_test_struct_arg_6")
BPF_PROG2(test_struct_arg_11,struct bpf_testmod_struct_arg_3 *,a)127 int BPF_PROG2(test_struct_arg_11, struct bpf_testmod_struct_arg_3 *, a)
128 {
129 	t6 = a->b[0];
130 	return 0;
131 }
132 
133 char _license[] SEC("license") = "GPL";
134