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

   1 // SPDX-License-Identifier: GPL-2.0
   2
   3 #include "vmlinux.h"
   4 #include <bpf/bpf_helpers.h>
   5 #include <bpf/bpf_tracing.h>
   6
   7 struct {
   8         __uint(type, BPF_MAP_TYPE_ARRAY);
   9         __uint(max_entries, 8);
  10         __type(key, __u32);
  11         __type(value, __u64);
  12 } test_array SEC(".maps");
  13
  14 unsigned int triggered;
  15
  16 static __u64 test_cb(struct bpf_map *map, __u32 *key, __u64 *val, void *data)
  17 {
  18         return 1;
  19 }
  20
  21 SEC("fexit/bpf_testmod_return_ptr")
  22 int BPF_PROG(handle_fexit_ret_subprogs, int arg, struct file *ret)
  23 {
  24         *(volatile long *)ret;
  25         *(volatile int *)&ret->f_mode;
  26         bpf_for_each_map_elem(&test_array, test_cb, NULL, 0);
  27         triggered++;
  28         return 0;
  29 }
  30
  31 SEC("fexit/bpf_testmod_return_ptr")
  32 int BPF_PROG(handle_fexit_ret_subprogs2, int arg, struct file *ret)
  33 {
  34         *(volatile long *)ret;
  35         *(volatile int *)&ret->f_mode;
  36         bpf_for_each_map_elem(&test_array, test_cb, NULL, 0);
  37         triggered++;
  38         return 0;
  39 }
  40
  41 SEC("fexit/bpf_testmod_return_ptr")
  42 int BPF_PROG(handle_fexit_ret_subprogs3, int arg, struct file *ret)
  43 {
  44         *(volatile long *)ret;
  45         *(volatile int *)&ret->f_mode;
  46         bpf_for_each_map_elem(&test_array, test_cb, NULL, 0);
  47         triggered++;
  48         return 0;
  49 }
  50
  51 char _license[] SEC("license") = "GPL";