bpf.h 4.4 KB

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