LXR linux/tools/lib/bpf/bpf.h

   1/*
   2 * common eBPF ELF operations.
   3 *
   4 * Copyright (C) 2013-2015 Alexei Starovoitov <ast@kernel.org>
   5 * Copyright (C) 2015 Wang Nan <wangnan0@huawei.com>
   6 * Copyright (C) 2015 Huawei Inc.
   7 *
   8 * This program is free software; you can redistribute it and/or
   9 * modify it under the terms of the GNU Lesser General Public
  10 * License as published by the Free Software Foundation;
  11 * version 2.1 of the License (not later!)
  12 *
  13 * This program is distributed in the hope that it will be useful,
  14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 * GNU Lesser General Public License for more details.
  17 *
  18 * You should have received a copy of the GNU Lesser General Public
  19 * License along with this program; if not,  see <http://www.gnu.org/licenses>
  20 */
  21#ifndef __BPF_BPF_H
  22#define __BPF_BPF_H
  23
  24#include <linux/bpf.h>
  25#include <stddef.h>
  26
  27int bpf_create_map_node(enum bpf_map_type map_type, int key_size,
  28                        int value_size, int max_entries, __u32 map_flags,
  29                        int node);
  30int bpf_create_map(enum bpf_map_type map_type, int key_size, int value_size,
  31                   int max_entries, __u32 map_flags);
  32int bpf_create_map_in_map_node(enum bpf_map_type map_type, int key_size,
  33                               int inner_map_fd, int max_entries,
  34                               __u32 map_flags, int node);
  35int bpf_create_map_in_map(enum bpf_map_type map_type, int key_size,
  36                          int inner_map_fd, int max_entries, __u32 map_flags);
  37
  38/* Recommend log buffer size */
  39#define BPF_LOG_BUF_SIZE 65536
  40int bpf_load_program(enum bpf_prog_type type, const struct bpf_insn *insns,
  41                     size_t insns_cnt, const char *license,
  42                     __u32 kern_version, char *log_buf,
  43                     size_t log_buf_sz);
  44int bpf_verify_program(enum bpf_prog_type type, const struct bpf_insn *insns,
  45                       size_t insns_cnt, int strict_alignment,
  46                       const char *license, __u32 kern_version,
  47                       char *log_buf, size_t log_buf_sz, int log_level);
  48
  49int bpf_map_update_elem(int fd, const void *key, const void *value,
  50                        __u64 flags);
  51
  52int bpf_map_lookup_elem(int fd, const void *key, void *value);
  53int bpf_map_delete_elem(int fd, const void *key);
  54int bpf_map_get_next_key(int fd, const void *key, void *next_key);
  55int bpf_obj_pin(int fd, const char *pathname);
  56int bpf_obj_get(const char *pathname);
  57int bpf_prog_attach(int prog_fd, int attachable_fd, enum bpf_attach_type type,
  58                    unsigned int flags);
  59int bpf_prog_detach(int attachable_fd, enum bpf_attach_type type);
  60int bpf_prog_test_run(int prog_fd, int repeat, void *data, __u32 size,
  61                      void *data_out, __u32 *size_out, __u32 *retval,
  62                      __u32 *duration);
  63int bpf_prog_get_next_id(__u32 start_id, __u32 *next_id);
  64int bpf_map_get_next_id(__u32 start_id, __u32 *next_id);
  65int bpf_prog_get_fd_by_id(__u32 id);
  66int bpf_map_get_fd_by_id(__u32 id);
  67int bpf_obj_get_info_by_fd(int prog_fd, void *info, __u32 *info_len);
  68
  69#endif
  70