162306a36Sopenharmony_ci/* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */ 262306a36Sopenharmony_ci#ifndef __BPF_LEGACY__ 362306a36Sopenharmony_ci#define __BPF_LEGACY__ 462306a36Sopenharmony_ci 562306a36Sopenharmony_ci#if __GNUC__ && !__clang__ 662306a36Sopenharmony_ci/* Functions to emit BPF_LD_ABS and BPF_LD_IND instructions. We 762306a36Sopenharmony_ci * provide the "standard" names as synonyms of the corresponding GCC 862306a36Sopenharmony_ci * builtins. Note how the SKB argument is ignored. 962306a36Sopenharmony_ci */ 1062306a36Sopenharmony_ci#define load_byte(skb, off) __builtin_bpf_load_byte(off) 1162306a36Sopenharmony_ci#define load_half(skb, off) __builtin_bpf_load_half(off) 1262306a36Sopenharmony_ci#define load_word(skb, off) __builtin_bpf_load_word(off) 1362306a36Sopenharmony_ci#else 1462306a36Sopenharmony_ci/* llvm builtin functions that eBPF C program may use to 1562306a36Sopenharmony_ci * emit BPF_LD_ABS and BPF_LD_IND instructions 1662306a36Sopenharmony_ci */ 1762306a36Sopenharmony_ciunsigned long long load_byte(void *skb, unsigned long long off) asm("llvm.bpf.load.byte"); 1862306a36Sopenharmony_ciunsigned long long load_half(void *skb, unsigned long long off) asm("llvm.bpf.load.half"); 1962306a36Sopenharmony_ciunsigned long long load_word(void *skb, unsigned long long off) asm("llvm.bpf.load.word"); 2062306a36Sopenharmony_ci#endif 2162306a36Sopenharmony_ci 2262306a36Sopenharmony_ci#endif 2362306a36Sopenharmony_ci 24