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 struct bpf_load_program_attr { 45 enum bpf_prog_type prog_type; 46 enum bpf_attach_type expected_attach_type; 47 const char *name; 48 const struct bpf_insn *insns; 49 size_t insns_cnt; 50 const char *license; 51 __u32 kern_version; 52 }; 53 54 /* Recommend log buffer size */ 55 #define BPF_LOG_BUF_SIZE (256 * 1024) 56 int bpf_load_program_xattr(const struct bpf_load_program_attr *load_attr, 57 char *log_buf, size_t log_buf_sz); 58 int bpf_load_program(enum bpf_prog_type type, const struct bpf_insn *insns, 59 size_t insns_cnt, const char *license, 60 __u32 kern_version, char *log_buf, 61 size_t log_buf_sz); 62 int bpf_verify_program(enum bpf_prog_type type, const struct bpf_insn *insns, 63 size_t insns_cnt, int strict_alignment, 64 const char *license, __u32 kern_version, 65 char *log_buf, size_t log_buf_sz, int log_level); 66 67 int bpf_map_update_elem(int fd, const void *key, const void *value, 68 __u64 flags); 69 70 int bpf_map_lookup_elem(int fd, const void *key, void *value); 71 int bpf_map_delete_elem(int fd, const void *key); 72 int bpf_map_get_next_key(int fd, const void *key, void *next_key); 73 int bpf_obj_pin(int fd, const char *pathname); 74 int bpf_obj_get(const char *pathname); 75 int bpf_prog_attach(int prog_fd, int attachable_fd, enum bpf_attach_type type, 76 unsigned int flags); 77 int bpf_prog_detach(int attachable_fd, enum bpf_attach_type type); 78 int bpf_prog_detach2(int prog_fd, int attachable_fd, enum bpf_attach_type type); 79 int bpf_prog_test_run(int prog_fd, int repeat, void *data, __u32 size, 80 void *data_out, __u32 *size_out, __u32 *retval, 81 __u32 *duration); 82 int bpf_prog_get_next_id(__u32 start_id, __u32 *next_id); 83 int bpf_map_get_next_id(__u32 start_id, __u32 *next_id); 84 int bpf_prog_get_fd_by_id(__u32 id); 85 int bpf_map_get_fd_by_id(__u32 id); 86 int bpf_obj_get_info_by_fd(int prog_fd, void *info, __u32 *info_len); 87 int bpf_prog_query(int target_fd, enum bpf_attach_type type, __u32 query_flags, 88 __u32 *attach_flags, __u32 *prog_ids, __u32 *prog_cnt); 89 int bpf_raw_tracepoint_open(const char *name, int prog_fd); 90 #endif 91