/* SPDX-License-Identifier: GPL-2.0 */
  #ifndef __BPF_LOAD_H
  #define __BPF_LOAD_H
  
  #include "libbpf.h"
  
  #define MAX_MAPS 32
  #define MAX_PROGS 32
  
  struct bpf_map_def {
  	unsigned int type;
  	unsigned int key_size;
  	unsigned int value_size;
  	unsigned int max_entries;
  	unsigned int map_flags;
  	unsigned int inner_map_idx;
  	unsigned int numa_node;
  };
  
  struct bpf_map_data {
  	int fd;
  	char *name;
  	size_t elf_offset;
  	struct bpf_map_def def;
  };
  
  typedef void (*fixup_map_cb)(struct bpf_map_data *map, int idx);
  
  extern int prog_fd[MAX_PROGS];
  extern int event_fd[MAX_PROGS];
  extern char bpf_log_buf[BPF_LOG_BUF_SIZE];
  extern int prog_cnt;
  
  /* There is a one-to-one mapping between map_fd[] and map_data[].
   * The map_data[] just contains more rich info on the given map.
   */
  extern int map_fd[MAX_MAPS];
  extern struct bpf_map_data map_data[MAX_MAPS];
  extern int map_data_count;
  
  /* parses elf file compiled by llvm .c->.o
   * . parses 'maps' section and creates maps via BPF syscall
   * . parses 'license' section and passes it to syscall
   * . parses elf relocations for BPF maps and adjusts BPF_LD_IMM64 insns by
   *   storing map_fd into insn->imm and marking such insns as BPF_PSEUDO_MAP_FD
   * . loads eBPF programs via BPF syscall
   *
   * One ELF file can contain multiple BPF programs which will be loaded
   * and their FDs stored stored in prog_fd array
   *
   * returns zero on success
   */
  int load_bpf_file(char *path);
  int load_bpf_file_fixup_map(const char *path, fixup_map_cb fixup_map);
  
  void read_trace_pipe(void);
  struct ksym {
  	long addr;
  	char *name;
  };
  
  int load_kallsyms(void);
  struct ksym *ksym_search(long key);
  int set_link_xdp_fd(int ifindex, int fd, __u32 flags);
  #endif