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(enum bpf_map_type map_type, int key_size, int value_size, 28 int max_entries, __u32 map_flags); 29 int bpf_create_map_in_map(enum bpf_map_type map_type, int key_size, 30 int inner_map_fd, int max_entries, __u32 map_flags); 31 32 /* Recommend log buffer size */ 33 #define BPF_LOG_BUF_SIZE 65536 34 int bpf_load_program(enum bpf_prog_type type, const struct bpf_insn *insns, 35 size_t insns_cnt, const char *license, 36 __u32 kern_version, char *log_buf, 37 size_t log_buf_sz); 38 int bpf_verify_program(enum bpf_prog_type type, const struct bpf_insn *insns, 39 size_t insns_cnt, int strict_alignment, 40 const char *license, __u32 kern_version, 41 char *log_buf, size_t log_buf_sz); 42 43 int bpf_map_update_elem(int fd, const void *key, const void *value, 44 __u64 flags); 45 46 int bpf_map_lookup_elem(int fd, const void *key, void *value); 47 int bpf_map_delete_elem(int fd, const void *key); 48 int bpf_map_get_next_key(int fd, const void *key, void *next_key); 49 int bpf_obj_pin(int fd, const char *pathname); 50 int bpf_obj_get(const char *pathname); 51 int bpf_prog_attach(int prog_fd, int attachable_fd, enum bpf_attach_type type, 52 unsigned int flags); 53 int bpf_prog_detach(int attachable_fd, enum bpf_attach_type type); 54 int bpf_prog_test_run(int prog_fd, int repeat, void *data, __u32 size, 55 void *data_out, __u32 *size_out, __u32 *retval, 56 __u32 *duration); 57 int bpf_prog_get_next_id(__u32 start_id, __u32 *next_id); 58 int bpf_map_get_next_id(__u32 start_id, __u32 *next_id); 59 int bpf_prog_get_fd_by_id(__u32 id); 60 int bpf_map_get_fd_by_id(__u32 id); 61 int bpf_obj_get_info_by_fd(int prog_fd, void *info, __u32 *info_len); 62 63 #endif 64