1 /* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */ 2 #ifndef __BPF_LEGACY__ 3 #define __BPF_LEGACY__ 4 5 /* 6 * legacy bpf_map_def with extra fields supported only by bpf_load(), do not 7 * use outside of samples/bpf 8 */ 9 struct bpf_map_def_legacy { 10 unsigned int type; 11 unsigned int key_size; 12 unsigned int value_size; 13 unsigned int max_entries; 14 unsigned int map_flags; 15 unsigned int inner_map_idx; 16 unsigned int numa_node; 17 }; 18 19 #define BPF_ANNOTATE_KV_PAIR(name, type_key, type_val) \ 20 struct ____btf_map_##name { \ 21 type_key key; \ 22 type_val value; \ 23 }; \ 24 struct ____btf_map_##name \ 25 __attribute__ ((section(".maps." #name), used)) \ 26 ____btf_map_##name = { } 27 28 /* llvm builtin functions that eBPF C program may use to 29 * emit BPF_LD_ABS and BPF_LD_IND instructions 30 */ 31 unsigned long long load_byte(void *skb, 32 unsigned long long off) asm("llvm.bpf.load.byte"); 33 unsigned long long load_half(void *skb, 34 unsigned long long off) asm("llvm.bpf.load.half"); 35 unsigned long long load_word(void *skb, 36 unsigned long long off) asm("llvm.bpf.load.word"); 37 38 #endif 39 40