1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (C) 2021. Huawei Technologies Co., Ltd */
3 #include <linux/bpf.h>
4 #include <bpf/bpf_helpers.h>
5 #include <bpf/bpf_tracing.h>
6
7 struct bpf_dummy_ops_state {
8 int val;
9 } __attribute__((preserve_access_index));
10
11 struct bpf_dummy_ops {
12 int (*test_1)(struct bpf_dummy_ops_state *state);
13 int (*test_2)(struct bpf_dummy_ops_state *state, int a1, unsigned short a2,
14 char a3, unsigned long a4);
15 };
16
17 char _license[] SEC("license") = "GPL";
18
19 SEC("struct_ops/test_1")
BPF_PROG(test_1,struct bpf_dummy_ops_state * state)20 int BPF_PROG(test_1, struct bpf_dummy_ops_state *state)
21 {
22 int ret;
23
24 if (!state)
25 return 0xf2f3f4f5;
26
27 ret = state->val;
28 state->val = 0x5a;
29 return ret;
30 }
31
32 __u64 test_2_args[5];
33
34 SEC("struct_ops/test_2")
BPF_PROG(test_2,struct bpf_dummy_ops_state * state,int a1,unsigned short a2,char a3,unsigned long a4)35 int BPF_PROG(test_2, struct bpf_dummy_ops_state *state, int a1, unsigned short a2,
36 char a3, unsigned long a4)
37 {
38 test_2_args[0] = (unsigned long)state;
39 test_2_args[1] = a1;
40 test_2_args[2] = a2;
41 test_2_args[3] = a3;
42 test_2_args[4] = a4;
43 return 0;
44 }
45
46 SEC(".struct_ops")
47 struct bpf_dummy_ops dummy_1 = {
48 .test_1 = (void *)test_1,
49 .test_2 = (void *)test_2,
50 };
51