tools/lib/bpf/bpf.h

   1 /* SPDX-License-Identifier: LGPL-2.1 */
   2
   3 /*
   4  * common eBPF ELF operations.
   5  *
   6  * Copyright (C) 2013-2015 Alexei Starovoitov <ast@kernel.org>
   7  * Copyright (C) 2015 Wang Nan <wangnan0@huawei.com>
   8  * Copyright (C) 2015 Huawei Inc.
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Lesser General Public
  12  * License as published by the Free Software Foundation;
  13  * version 2.1 of the License (not later!)
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public
  21  * License along with this program; if not,  see <http://www.gnu.org/licenses>
  22  */
  23 #ifndef __BPF_BPF_H
  24 #define __BPF_BPF_H
  25
  26 #include <linux/bpf.h>
  27 #include <stddef.h>
  28
  29 int bpf_create_map_node(enum bpf_map_type map_type, const char *name,
  30                         int key_size, int value_size, int max_entries,
  31                         __u32 map_flags, int node);
  32 int bpf_create_map_name(enum bpf_map_type map_type, const char *name,
  33                         int key_size, int value_size, int max_entries,
  34                         __u32 map_flags);
  35 int bpf_create_map(enum bpf_map_type map_type, int key_size, int value_size,
  36                    int max_entries, __u32 map_flags);
  37 int bpf_create_map_in_map_node(enum bpf_map_type map_type, const char *name,
  38                                int key_size, int inner_map_fd, int max_entries,
  39                                __u32 map_flags, int node);
  40 int bpf_create_map_in_map(enum bpf_map_type map_type, const char *name,
  41                           int key_size, int inner_map_fd, int max_entries,
  42                           __u32 map_flags);
  43
  44 /* Recommend log buffer size */
  45 #define BPF_LOG_BUF_SIZE (256 * 1024)
  46 int bpf_load_program_name(enum bpf_prog_type type, const char *name,
  47                           const struct bpf_insn *insns,
  48                           size_t insns_cnt, const char *license,
  49                           __u32 kern_version, char *log_buf,
  50                           size_t log_buf_sz);
  51 int bpf_load_program(enum bpf_prog_type type, const struct bpf_insn *insns,
  52                      size_t insns_cnt, const char *license,
  53                      __u32 kern_version, char *log_buf,
  54                      size_t log_buf_sz);
  55 int bpf_verify_program(enum bpf_prog_type type, const struct bpf_insn *insns,
  56                        size_t insns_cnt, int strict_alignment,
  57                        const char *license, __u32 kern_version,
  58                        char *log_buf, size_t log_buf_sz, int log_level);
  59
  60 int bpf_map_update_elem(int fd, const void *key, const void *value,
  61                         __u64 flags);
  62
  63 int bpf_map_lookup_elem(int fd, const void *key, void *value);
  64 int bpf_map_delete_elem(int fd, const void *key);
  65 int bpf_map_get_next_key(int fd, const void *key, void *next_key);
  66 int bpf_obj_pin(int fd, const char *pathname);
  67 int bpf_obj_get(const char *pathname);
  68 int bpf_prog_attach(int prog_fd, int attachable_fd, enum bpf_attach_type type,
  69                     unsigned int flags);
  70 int bpf_prog_detach(int attachable_fd, enum bpf_attach_type type);
  71 int bpf_prog_detach2(int prog_fd, int attachable_fd, enum bpf_attach_type type);
  72 int bpf_prog_test_run(int prog_fd, int repeat, void *data, __u32 size,
  73                       void *data_out, __u32 *size_out, __u32 *retval,
  74                       __u32 *duration);
  75 int bpf_prog_get_next_id(__u32 start_id, __u32 *next_id);
  76 int bpf_map_get_next_id(__u32 start_id, __u32 *next_id);
  77 int bpf_prog_get_fd_by_id(__u32 id);
  78 int bpf_map_get_fd_by_id(__u32 id);
  79 int bpf_obj_get_info_by_fd(int prog_fd, void *info, __u32 *info_len);
  80 int bpf_prog_query(int target_fd, enum bpf_attach_type type, __u32 query_flags,
  81                    __u32 *attach_flags, __u32 *prog_ids, __u32 *prog_cnt);
  82 #endif