xref: /openbmc/linux/tools/lib/bpf/bpf_gen_internal.h (revision 708cdc57)
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 
8 struct ksym_relo_desc {
9 	const char *name;
10 	int kind;
11 	int insn_idx;
12 	bool is_weak;
13 	bool is_typeless;
14 	bool is_ld64;
15 };
16 
17 struct ksym_desc {
18 	const char *name;
19 	int ref;
20 	int kind;
21 	union {
22 		/* used for kfunc */
23 		int off;
24 		/* used for typeless ksym */
25 		bool typeless;
26 	};
27 	int insn;
28 	bool is_ld64;
29 };
30 
31 struct bpf_gen {
32 	struct gen_loader_opts *opts;
33 	void *data_start;
34 	void *data_cur;
35 	void *insn_start;
36 	void *insn_cur;
37 	ssize_t cleanup_label;
38 	__u32 nr_progs;
39 	__u32 nr_maps;
40 	int log_level;
41 	int error;
42 	struct ksym_relo_desc *relos;
43 	int relo_cnt;
44 	struct bpf_core_relo *core_relos;
45 	int core_relo_cnt;
46 	char attach_target[128];
47 	int attach_kind;
48 	struct ksym_desc *ksyms;
49 	__u32 nr_ksyms;
50 	int fd_array;
51 	int nr_fd_array;
52 };
53 
54 void bpf_gen__init(struct bpf_gen *gen, int log_level, int nr_progs, int nr_maps);
55 int bpf_gen__finish(struct bpf_gen *gen, int nr_progs, int nr_maps);
56 void bpf_gen__free(struct bpf_gen *gen);
57 void bpf_gen__load_btf(struct bpf_gen *gen, const void *raw_data, __u32 raw_size);
58 void bpf_gen__map_create(struct bpf_gen *gen,
59 			 enum bpf_map_type map_type, const char *map_name,
60 			 __u32 key_size, __u32 value_size, __u32 max_entries,
61 			 struct bpf_map_create_opts *map_attr, int map_idx);
62 void bpf_gen__prog_load(struct bpf_gen *gen,
63 			enum bpf_prog_type prog_type, const char *prog_name,
64 			const char *license, struct bpf_insn *insns, size_t insn_cnt,
65 			struct bpf_prog_load_opts *load_attr, int prog_idx);
66 void bpf_gen__map_update_elem(struct bpf_gen *gen, int map_idx, void *value, __u32 value_size);
67 void bpf_gen__map_freeze(struct bpf_gen *gen, int map_idx);
68 void bpf_gen__record_attach_target(struct bpf_gen *gen, const char *name, enum bpf_attach_type type);
69 void bpf_gen__record_extern(struct bpf_gen *gen, const char *name, bool is_weak,
70 			    bool is_typeless, bool is_ld64, int kind, int insn_idx);
71 void bpf_gen__record_relo_core(struct bpf_gen *gen, const struct bpf_core_relo *core_relo);
72 void bpf_gen__populate_outer_map(struct bpf_gen *gen, int outer_map_idx, int key, int inner_map_idx);
73 
74 #endif
75