tools/testing/selftests/net/sample_map_ret0.bpf.c

   1 /* SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) */
   2 #include <linux/bpf.h>
   3 #include <bpf/bpf_helpers.h>
   4
   5 struct {
   6         __uint(type, BPF_MAP_TYPE_HASH);
   7         __type(key, __u32);
   8         __type(value, long);
   9         __uint(max_entries, 2);
  10 } htab SEC(".maps");
  11
  12 struct {
  13         __uint(type, BPF_MAP_TYPE_ARRAY);
  14         __type(key, __u32);
  15         __type(value, long);
  16         __uint(max_entries, 2);
  17 } array SEC(".maps");
  18
  19 /* Sample program which should always load for testing control paths. */
  20 SEC("xdp") int func()
  21 {
  22         __u64 key64 = 0;
  23         __u32 key = 0;
  24         long *value;
  25
  26         value = bpf_map_lookup_elem(&htab, &key);
  27         if (!value)
  28                 return 1;
  29         value = bpf_map_lookup_elem(&array, &key64);
  30         if (!value)
  31                 return 1;
  32
  33         return 0;
  34 }