LXR linux/tools/testing/selftests/bpf/progs/dummy_st

   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
   7struct bpf_dummy_ops_state {
   8        int val;
   9} __attribute__((preserve_access_index));
  10
  11struct 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
  17char _license[] SEC("license") = "GPL";
  18
  19SEC("struct_ops/test_1")
  20int 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
  34SEC("struct_ops/test_2")
  35int 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
  46SEC(".struct_ops")
  47struct bpf_dummy_ops dummy_1 = {
  48        .test_1 = (void *)test_1,
  49        .test_2 = (void *)test_2,
  50};
  51