tools/testing/selftests/bpf/bpf_legacy.h

   1 /* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */
   2 #ifndef __BPF_LEGACY__
   3 #define __BPF_LEGACY__
   4
   5 #define BPF_ANNOTATE_KV_PAIR(name, type_key, type_val)          \
   6         struct ____btf_map_##name {                             \
   7                 type_key key;                                   \
   8                 type_val value;                                 \
   9         };                                                      \
  10         struct ____btf_map_##name                               \
  11         __attribute__ ((section(".maps." #name), used))         \
  12                 ____btf_map_##name = { }
  13
  14 /* llvm builtin functions that eBPF C program may use to
  15  * emit BPF_LD_ABS and BPF_LD_IND instructions
  16  */
  17 unsigned long long load_byte(void *skb,
  18                              unsigned long long off) asm("llvm.bpf.load.byte");
  19 unsigned long long load_half(void *skb,
  20                              unsigned long long off) asm("llvm.bpf.load.half");
  21 unsigned long long load_word(void *skb,
  22                              unsigned long long off) asm("llvm.bpf.load.word");
  23
  24 #endif
  25