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 27 int bpf_create_map_node(enum bpf_map_type map_type, const char *name, 28 int key_size, int value_size, int max_entries, 29 __u32 map_flags, int node); 30 int bpf_create_map_name(enum bpf_map_type map_type, const char *name, 31 int key_size, int value_size, int max_entries, 32 __u32 map_flags); 33 int bpf_create_map(enum bpf_map_type map_type, int key_size, int value_size, 34 int max_entries, __u32 map_flags); 35 int bpf_create_map_in_map_node(enum bpf_map_type map_type, const char *name, 36 int key_size, int inner_map_fd, int max_entries, 37 __u32 map_flags, int node); 38 int bpf_create_map_in_map(enum bpf_map_type map_type, const char *name, 39 int key_size, int inner_map_fd, int max_entries, 40 __u32 map_flags); 41 42 /* Recommend log buffer size */ 43 #define BPF_LOG_BUF_SIZE 65536 44 int bpf_load_program_name(enum bpf_prog_type type, const char *name, 45 const struct bpf_insn *insns, 46 size_t insns_cnt, const char *license, 47 __u32 kern_version, char *log_buf, 48 size_t log_buf_sz); 49 int bpf_load_program(enum bpf_prog_type type, const struct bpf_insn *insns, 50 size_t insns_cnt, const char *license, 51 __u32 kern_version, char *log_buf, 52 size_t log_buf_sz); 53 int bpf_verify_program(enum bpf_prog_type type, const struct bpf_insn *insns, 54 size_t insns_cnt, int strict_alignment, 55 const char *license, __u32 kern_version, 56 char *log_buf, size_t log_buf_sz, int log_level); 57 58 int bpf_map_update_elem(int fd, const void *key, const void *value, 59 __u64 flags); 60 61 int bpf_map_lookup_elem(int fd, const void *key, void *value); 62 int bpf_map_delete_elem(int fd, const void *key); 63 int bpf_map_get_next_key(int fd, const void *key, void *next_key); 64 int bpf_obj_pin(int fd, const char *pathname); 65 int bpf_obj_get(const char *pathname); 66 int bpf_prog_attach(int prog_fd, int attachable_fd, enum bpf_attach_type type, 67 unsigned int flags); 68 int bpf_prog_detach(int attachable_fd, enum bpf_attach_type type); 69 int bpf_prog_detach2(int prog_fd, int attachable_fd, enum bpf_attach_type type); 70 int bpf_prog_test_run(int prog_fd, int repeat, void *data, __u32 size, 71 void *data_out, __u32 *size_out, __u32 *retval, 72 __u32 *duration); 73 int bpf_prog_get_next_id(__u32 start_id, __u32 *next_id); 74 int bpf_map_get_next_id(__u32 start_id, __u32 *next_id); 75 int bpf_prog_get_fd_by_id(__u32 id); 76 int bpf_map_get_fd_by_id(__u32 id); 77 int bpf_obj_get_info_by_fd(int prog_fd, void *info, __u32 *info_len); 78 int bpf_prog_query(int target_fd, enum bpf_attach_type type, __u32 query_flags, 79 __u32 *attach_flags, __u32 *prog_ids, __u32 *prog_cnt); 80 #endif 81