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
29int 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);
32int 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);
35int bpf_create_map(enum bpf_map_type map_type, int key_size, int value_size,
36		   int max_entries, __u32 map_flags);
37int 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);
40int 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
44struct 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)
56int bpf_load_program_xattr(const struct bpf_load_program_attr *load_attr,
57			   char *log_buf, size_t log_buf_sz);
58int 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);
62int 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
67int bpf_map_update_elem(int fd, const void *key, const void *value,
68			__u64 flags);
69
70int bpf_map_lookup_elem(int fd, const void *key, void *value);
71int bpf_map_delete_elem(int fd, const void *key);
72int bpf_map_get_next_key(int fd, const void *key, void *next_key);
73int bpf_obj_pin(int fd, const char *pathname);
74int bpf_obj_get(const char *pathname);
75int bpf_prog_attach(int prog_fd, int attachable_fd, enum bpf_attach_type type,
76		    unsigned int flags);
77int bpf_prog_detach(int attachable_fd, enum bpf_attach_type type);
78int bpf_prog_detach2(int prog_fd, int attachable_fd, enum bpf_attach_type type);
79int 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);
82int bpf_prog_get_next_id(__u32 start_id, __u32 *next_id);
83int bpf_map_get_next_id(__u32 start_id, __u32 *next_id);
84int bpf_prog_get_fd_by_id(__u32 id);
85int bpf_map_get_fd_by_id(__u32 id);
86int bpf_obj_get_info_by_fd(int prog_fd, void *info, __u32 *info_len);
87int bpf_prog_query(int target_fd, enum bpf_attach_type type, __u32 query_flags,
88		   __u32 *attach_flags, __u32 *prog_ids, __u32 *prog_cnt);
89int bpf_raw_tracepoint_open(const char *name, int prog_fd);
90#endif