LXR linux/tools/lib/bpf/bpf_gen

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