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 
26