bpf_gen_internal.h

 1/* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */
 2/* Copyright (c) 2021 Facebook */
 3#ifndef __BPF_GEN_INTERNAL_H
 4#define __BPF_GEN_INTERNAL_H
 5
 6#include "bpf.h"
 7#include "libbpf_internal.h"
 8
 9struct ksym_relo_desc {
10	const char *name;
11	int kind;
12	int insn_idx;
13	bool is_weak;
14	bool is_typeless;
15	bool is_ld64;
16};
17
18struct ksym_desc {
19	const char *name;
20	int ref;
21	int kind;
22	union {
23		/* used for kfunc */
24		int off;
25		/* used for typeless ksym */
26		bool typeless;
27	};
28	int insn;
29	bool is_ld64;
30};
31
32struct bpf_gen {
33	struct gen_loader_opts *opts;
34	void *data_start;
35	void *data_cur;
36	void *insn_start;
37	void *insn_cur;
38	bool swapped_endian;
39	ssize_t cleanup_label;
40	__u32 nr_progs;
41	__u32 nr_maps;
42	int log_level;
43	int error;
44	struct ksym_relo_desc *relos;
45	int relo_cnt;
46	struct bpf_core_relo *core_relos;
47	int core_relo_cnt;
48	char attach_target[128];
49	int attach_kind;
50	struct ksym_desc *ksyms;
51	__u32 nr_ksyms;
52	int fd_array;
53	int nr_fd_array;
54	int hash_insn_offset[SHA256_DWORD_SIZE];
55};
56
57void bpf_gen__init(struct bpf_gen *gen, int log_level, int nr_progs, int nr_maps);
58int bpf_gen__finish(struct bpf_gen *gen, int nr_progs, int nr_maps);
59void bpf_gen__free(struct bpf_gen *gen);
60void bpf_gen__load_btf(struct bpf_gen *gen, const void *raw_data, __u32 raw_size);
61void bpf_gen__map_create(struct bpf_gen *gen,
62			 enum bpf_map_type map_type, const char *map_name,
63			 __u32 key_size, __u32 value_size, __u32 max_entries,
64			 struct bpf_map_create_opts *map_attr, int map_idx);
65void bpf_gen__prog_load(struct bpf_gen *gen,
66			enum bpf_prog_type prog_type, const char *prog_name,
67			const char *license, struct bpf_insn *insns, size_t insn_cnt,
68			struct bpf_prog_load_opts *load_attr, int prog_idx);
69void bpf_gen__map_update_elem(struct bpf_gen *gen, int map_idx, void *value, __u32 value_size);
70void bpf_gen__map_freeze(struct bpf_gen *gen, int map_idx);
71void bpf_gen__record_attach_target(struct bpf_gen *gen, const char *name, enum bpf_attach_type type);
72void bpf_gen__record_extern(struct bpf_gen *gen, const char *name, bool is_weak,
73			    bool is_typeless, bool is_ld64, int kind, int insn_idx);
74void bpf_gen__record_relo_core(struct bpf_gen *gen, const struct bpf_core_relo *core_relo);
75void bpf_gen__populate_outer_map(struct bpf_gen *gen, int outer_map_idx, int key, int inner_map_idx);
76
77#endif