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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/tools/lib/bpf/bpf_gen_internal.h
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/* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */

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/* Copyright (c) 2021 Facebook */

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#ifndef __BPF_GEN_INTERNAL_H

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#define __BPF_GEN_INTERNAL_H

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#include "bpf.h"

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#include "libbpf_internal.h"

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struct ksym_relo_desc {

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	const char *name;

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	int kind;

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	int insn_idx;

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	bool is_weak;

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	bool is_typeless;

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	bool is_ld64;

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};

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struct ksym_desc {

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	const char *name;

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	int ref;

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	int kind;

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	union {

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		/* used for kfunc */

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		int off;

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		/* used for typeless ksym */

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		bool typeless;

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	};

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	int insn;

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	bool is_ld64;

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};

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struct bpf_gen {

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	struct gen_loader_opts *opts;

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	void *data_start;

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	void *data_cur;

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	void *insn_start;

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	void *insn_cur;

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	bool swapped_endian;

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	ssize_t cleanup_label;

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	__u32 nr_progs;

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	__u32 nr_maps;

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	int log_level;

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	int error;

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	struct ksym_relo_desc *relos;

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	int relo_cnt;

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	struct bpf_core_relo *core_relos;

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	int core_relo_cnt;

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	char attach_target[128];

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	int attach_kind;

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	struct ksym_desc *ksyms;

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	__u32 nr_ksyms;

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	int fd_array;

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	int nr_fd_array;

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	int hash_insn_offset[SHA256_DWORD_SIZE];

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};

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void bpf_gen__init(struct bpf_gen *gen, int log_level, int nr_progs, int nr_maps);

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int bpf_gen__finish(struct bpf_gen *gen, int nr_progs, int nr_maps);

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void bpf_gen__free(struct bpf_gen *gen);

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void bpf_gen__load_btf(struct bpf_gen *gen, const void *raw_data, __u32 raw_size);

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void bpf_gen__map_create(struct bpf_gen *gen,

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			 enum bpf_map_type map_type, const char *map_name,

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			 __u32 key_size, __u32 value_size, __u32 max_entries,

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			 struct bpf_map_create_opts *map_attr, int map_idx);

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void bpf_gen__prog_load(struct bpf_gen *gen,

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			enum bpf_prog_type prog_type, const char *prog_name,

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			const char *license, struct bpf_insn *insns, size_t insn_cnt,

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			struct bpf_prog_load_opts *load_attr, int prog_idx);

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void bpf_gen__map_update_elem(struct bpf_gen *gen, int map_idx, void *value, __u32 value_size);

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void bpf_gen__map_freeze(struct bpf_gen *gen, int map_idx);

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void bpf_gen__record_attach_target(struct bpf_gen *gen, const char *name, enum bpf_attach_type type);

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void bpf_gen__record_extern(struct bpf_gen *gen, const char *name, bool is_weak,

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			    bool is_typeless, bool is_ld64, int kind, int insn_idx);

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void bpf_gen__record_relo_core(struct bpf_gen *gen, const struct bpf_core_relo *core_relo);

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void bpf_gen__populate_outer_map(struct bpf_gen *gen, int outer_map_idx, int key, int inner_map_idx);

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#endif

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