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 <stdbool.h> 28 #include <stddef.h> 29 30 struct bpf_create_map_attr { 31 const char *name; 32 enum bpf_map_type map_type; 33 __u32 map_flags; 34 __u32 key_size; 35 __u32 value_size; 36 __u32 max_entries; 37 __u32 numa_node; 38 __u32 btf_fd; 39 __u32 btf_key_type_id; 40 __u32 btf_value_type_id; 41 __u32 map_ifindex; 42 __u32 inner_map_fd; 43 }; 44 45 int bpf_create_map_xattr(const struct bpf_create_map_attr *create_attr); 46 int bpf_create_map_node(enum bpf_map_type map_type, const char *name, 47 int key_size, int value_size, int max_entries, 48 __u32 map_flags, int node); 49 int bpf_create_map_name(enum bpf_map_type map_type, const char *name, 50 int key_size, int value_size, int max_entries, 51 __u32 map_flags); 52 int bpf_create_map(enum bpf_map_type map_type, int key_size, int value_size, 53 int max_entries, __u32 map_flags); 54 int bpf_create_map_in_map_node(enum bpf_map_type map_type, const char *name, 55 int key_size, int inner_map_fd, int max_entries, 56 __u32 map_flags, int node); 57 int bpf_create_map_in_map(enum bpf_map_type map_type, const char *name, 58 int key_size, int inner_map_fd, int max_entries, 59 __u32 map_flags); 60 61 struct bpf_load_program_attr { 62 enum bpf_prog_type prog_type; 63 enum bpf_attach_type expected_attach_type; 64 const char *name; 65 const struct bpf_insn *insns; 66 size_t insns_cnt; 67 const char *license; 68 __u32 kern_version; 69 __u32 prog_ifindex; 70 }; 71 72 /* Recommend log buffer size */ 73 #define BPF_LOG_BUF_SIZE (256 * 1024) 74 int bpf_load_program_xattr(const struct bpf_load_program_attr *load_attr, 75 char *log_buf, size_t log_buf_sz); 76 int bpf_load_program(enum bpf_prog_type type, const struct bpf_insn *insns, 77 size_t insns_cnt, const char *license, 78 __u32 kern_version, char *log_buf, 79 size_t log_buf_sz); 80 int bpf_verify_program(enum bpf_prog_type type, const struct bpf_insn *insns, 81 size_t insns_cnt, int strict_alignment, 82 const char *license, __u32 kern_version, 83 char *log_buf, size_t log_buf_sz, int log_level); 84 85 int bpf_map_update_elem(int fd, const void *key, const void *value, 86 __u64 flags); 87 88 int bpf_map_lookup_elem(int fd, const void *key, void *value); 89 int bpf_map_delete_elem(int fd, const void *key); 90 int bpf_map_get_next_key(int fd, const void *key, void *next_key); 91 int bpf_obj_pin(int fd, const char *pathname); 92 int bpf_obj_get(const char *pathname); 93 int bpf_prog_attach(int prog_fd, int attachable_fd, enum bpf_attach_type type, 94 unsigned int flags); 95 int bpf_prog_detach(int attachable_fd, enum bpf_attach_type type); 96 int bpf_prog_detach2(int prog_fd, int attachable_fd, enum bpf_attach_type type); 97 int bpf_prog_test_run(int prog_fd, int repeat, void *data, __u32 size, 98 void *data_out, __u32 *size_out, __u32 *retval, 99 __u32 *duration); 100 int bpf_prog_get_next_id(__u32 start_id, __u32 *next_id); 101 int bpf_map_get_next_id(__u32 start_id, __u32 *next_id); 102 int bpf_prog_get_fd_by_id(__u32 id); 103 int bpf_map_get_fd_by_id(__u32 id); 104 int bpf_btf_get_fd_by_id(__u32 id); 105 int bpf_obj_get_info_by_fd(int prog_fd, void *info, __u32 *info_len); 106 int bpf_prog_query(int target_fd, enum bpf_attach_type type, __u32 query_flags, 107 __u32 *attach_flags, __u32 *prog_ids, __u32 *prog_cnt); 108 int bpf_raw_tracepoint_open(const char *name, int prog_fd); 109 int bpf_load_btf(void *btf, __u32 btf_size, char *log_buf, __u32 log_buf_size, 110 bool do_log); 111 int bpf_task_fd_query(int pid, int fd, __u32 flags, char *buf, __u32 *buf_len, 112 __u32 *prog_id, __u32 *fd_type, __u64 *probe_offset, 113 __u64 *probe_addr); 114 #endif 115