| /* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */ |
| |
| /* |
| * common eBPF ELF operations. |
| * |
| * Copyright (C) 2013-2015 Alexei Starovoitov <ast@kernel.org> |
| * Copyright (C) 2015 Wang Nan <wangnan0@huawei.com> |
| * Copyright (C) 2015 Huawei Inc. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; |
| * version 2.1 of the License (not later!) |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this program; if not, see <http://www.gnu.org/licenses> |
| */ |
| #ifndef __LIBBPF_BPF_H |
| #define __LIBBPF_BPF_H |
| |
| #include <linux/bpf.h> |
| #include <stdbool.h> |
| #include <stddef.h> |
| #include <stdint.h> |
| |
| #include "libbpf_common.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| struct bpf_create_map_attr { |
| const char *name; |
| enum bpf_map_type map_type; |
| __u32 map_flags; |
| __u32 key_size; |
| __u32 value_size; |
| __u32 max_entries; |
| __u32 numa_node; |
| __u32 btf_fd; |
| __u32 btf_key_type_id; |
| __u32 btf_value_type_id; |
| __u32 map_ifindex; |
| union { |
| __u32 inner_map_fd; |
| __u32 btf_vmlinux_value_type_id; |
| }; |
| }; |
| |
| LIBBPF_API int |
| bpf_create_map_xattr(const struct bpf_create_map_attr *create_attr); |
| LIBBPF_API int bpf_create_map_node(enum bpf_map_type map_type, const char *name, |
| int key_size, int value_size, |
| int max_entries, __u32 map_flags, int node); |
| LIBBPF_API int bpf_create_map_name(enum bpf_map_type map_type, const char *name, |
| int key_size, int value_size, |
| int max_entries, __u32 map_flags); |
| LIBBPF_API int bpf_create_map(enum bpf_map_type map_type, int key_size, |
| int value_size, int max_entries, __u32 map_flags); |
| LIBBPF_API int bpf_create_map_in_map_node(enum bpf_map_type map_type, |
| const char *name, int key_size, |
| int inner_map_fd, int max_entries, |
| __u32 map_flags, int node); |
| LIBBPF_API int bpf_create_map_in_map(enum bpf_map_type map_type, |
| const char *name, int key_size, |
| int inner_map_fd, int max_entries, |
| __u32 map_flags); |
| |
| struct bpf_load_program_attr { |
| enum bpf_prog_type prog_type; |
| enum bpf_attach_type expected_attach_type; |
| const char *name; |
| const struct bpf_insn *insns; |
| size_t insns_cnt; |
| const char *license; |
| union { |
| __u32 kern_version; |
| __u32 attach_prog_fd; |
| }; |
| union { |
| __u32 prog_ifindex; |
| __u32 attach_btf_id; |
| }; |
| __u32 prog_btf_fd; |
| __u32 func_info_rec_size; |
| const void *func_info; |
| __u32 func_info_cnt; |
| __u32 line_info_rec_size; |
| const void *line_info; |
| __u32 line_info_cnt; |
| __u32 log_level; |
| __u32 prog_flags; |
| }; |
| |
| /* Flags to direct loading requirements */ |
| #define MAPS_RELAX_COMPAT 0x01 |
| |
| /* Recommend log buffer size */ |
| #define BPF_LOG_BUF_SIZE (UINT32_MAX >> 8) /* verifier maximum in kernels <= 5.1 */ |
| LIBBPF_API int |
| bpf_load_program_xattr(const struct bpf_load_program_attr *load_attr, |
| char *log_buf, size_t log_buf_sz); |
| LIBBPF_API int bpf_load_program(enum bpf_prog_type type, |
| const struct bpf_insn *insns, size_t insns_cnt, |
| const char *license, __u32 kern_version, |
| char *log_buf, size_t log_buf_sz); |
| LIBBPF_API int bpf_verify_program(enum bpf_prog_type type, |
| const struct bpf_insn *insns, |
| size_t insns_cnt, __u32 prog_flags, |
| const char *license, __u32 kern_version, |
| char *log_buf, size_t log_buf_sz, |
| int log_level); |
| |
| LIBBPF_API int bpf_map_update_elem(int fd, const void *key, const void *value, |
| __u64 flags); |
| |
| LIBBPF_API int bpf_map_lookup_elem(int fd, const void *key, void *value); |
| LIBBPF_API int bpf_map_lookup_elem_flags(int fd, const void *key, void *value, |
| __u64 flags); |
| LIBBPF_API int bpf_map_lookup_and_delete_elem(int fd, const void *key, |
| void *value); |
| LIBBPF_API int bpf_map_lookup_and_delete_elem_flags(int fd, const void *key, |
| void *value, __u64 flags); |
| LIBBPF_API int bpf_map_delete_elem(int fd, const void *key); |
| LIBBPF_API int bpf_map_get_next_key(int fd, const void *key, void *next_key); |
| LIBBPF_API int bpf_map_freeze(int fd); |
| |
| struct bpf_map_batch_opts { |
| size_t sz; /* size of this struct for forward/backward compatibility */ |
| __u64 elem_flags; |
| __u64 flags; |
| }; |
| #define bpf_map_batch_opts__last_field flags |
| |
| LIBBPF_API int bpf_map_delete_batch(int fd, void *keys, |
| __u32 *count, |
| const struct bpf_map_batch_opts *opts); |
| LIBBPF_API int bpf_map_lookup_batch(int fd, void *in_batch, void *out_batch, |
| void *keys, void *values, __u32 *count, |
| const struct bpf_map_batch_opts *opts); |
| LIBBPF_API int bpf_map_lookup_and_delete_batch(int fd, void *in_batch, |
| void *out_batch, void *keys, |
| void *values, __u32 *count, |
| const struct bpf_map_batch_opts *opts); |
| LIBBPF_API int bpf_map_update_batch(int fd, void *keys, void *values, |
| __u32 *count, |
| const struct bpf_map_batch_opts *opts); |
| |
| LIBBPF_API int bpf_obj_pin(int fd, const char *pathname); |
| LIBBPF_API int bpf_obj_get(const char *pathname); |
| |
| struct bpf_prog_attach_opts { |
| size_t sz; /* size of this struct for forward/backward compatibility */ |
| unsigned int flags; |
| int replace_prog_fd; |
| }; |
| #define bpf_prog_attach_opts__last_field replace_prog_fd |
| |
| LIBBPF_API int bpf_prog_attach(int prog_fd, int attachable_fd, |
| enum bpf_attach_type type, unsigned int flags); |
| LIBBPF_API int bpf_prog_attach_xattr(int prog_fd, int attachable_fd, |
| enum bpf_attach_type type, |
| const struct bpf_prog_attach_opts *opts); |
| LIBBPF_API int bpf_prog_detach(int attachable_fd, enum bpf_attach_type type); |
| LIBBPF_API int bpf_prog_detach2(int prog_fd, int attachable_fd, |
| enum bpf_attach_type type); |
| |
| union bpf_iter_link_info; /* defined in up-to-date linux/bpf.h */ |
| struct bpf_link_create_opts { |
| size_t sz; /* size of this struct for forward/backward compatibility */ |
| __u32 flags; |
| union bpf_iter_link_info *iter_info; |
| __u32 iter_info_len; |
| __u32 target_btf_id; |
| }; |
| #define bpf_link_create_opts__last_field target_btf_id |
| |
| LIBBPF_API int bpf_link_create(int prog_fd, int target_fd, |
| enum bpf_attach_type attach_type, |
| const struct bpf_link_create_opts *opts); |
| |
| LIBBPF_API int bpf_link_detach(int link_fd); |
| |
| struct bpf_link_update_opts { |
| size_t sz; /* size of this struct for forward/backward compatibility */ |
| __u32 flags; /* extra flags */ |
| __u32 old_prog_fd; /* expected old program FD */ |
| }; |
| #define bpf_link_update_opts__last_field old_prog_fd |
| |
| LIBBPF_API int bpf_link_update(int link_fd, int new_prog_fd, |
| const struct bpf_link_update_opts *opts); |
| |
| LIBBPF_API int bpf_iter_create(int link_fd); |
| |
| struct bpf_prog_test_run_attr { |
| int prog_fd; |
| int repeat; |
| const void *data_in; |
| __u32 data_size_in; |
| void *data_out; /* optional */ |
| __u32 data_size_out; /* in: max length of data_out |
| * out: length of data_out */ |
| __u32 retval; /* out: return code of the BPF program */ |
| __u32 duration; /* out: average per repetition in ns */ |
| const void *ctx_in; /* optional */ |
| __u32 ctx_size_in; |
| void *ctx_out; /* optional */ |
| __u32 ctx_size_out; /* in: max length of ctx_out |
| * out: length of cxt_out */ |
| }; |
| |
| LIBBPF_API int bpf_prog_test_run_xattr(struct bpf_prog_test_run_attr *test_attr); |
| |
| /* |
| * bpf_prog_test_run does not check that data_out is large enough. Consider |
| * using bpf_prog_test_run_xattr instead. |
| */ |
| LIBBPF_API int bpf_prog_test_run(int prog_fd, int repeat, void *data, |
| __u32 size, void *data_out, __u32 *size_out, |
| __u32 *retval, __u32 *duration); |
| LIBBPF_API int bpf_prog_get_next_id(__u32 start_id, __u32 *next_id); |
| LIBBPF_API int bpf_map_get_next_id(__u32 start_id, __u32 *next_id); |
| LIBBPF_API int bpf_btf_get_next_id(__u32 start_id, __u32 *next_id); |
| LIBBPF_API int bpf_link_get_next_id(__u32 start_id, __u32 *next_id); |
| LIBBPF_API int bpf_prog_get_fd_by_id(__u32 id); |
| LIBBPF_API int bpf_map_get_fd_by_id(__u32 id); |
| LIBBPF_API int bpf_btf_get_fd_by_id(__u32 id); |
| LIBBPF_API int bpf_link_get_fd_by_id(__u32 id); |
| LIBBPF_API int bpf_obj_get_info_by_fd(int bpf_fd, void *info, __u32 *info_len); |
| LIBBPF_API int bpf_prog_query(int target_fd, enum bpf_attach_type type, |
| __u32 query_flags, __u32 *attach_flags, |
| __u32 *prog_ids, __u32 *prog_cnt); |
| LIBBPF_API int bpf_raw_tracepoint_open(const char *name, int prog_fd); |
| LIBBPF_API int bpf_load_btf(const void *btf, __u32 btf_size, char *log_buf, |
| __u32 log_buf_size, bool do_log); |
| LIBBPF_API int bpf_task_fd_query(int pid, int fd, __u32 flags, char *buf, |
| __u32 *buf_len, __u32 *prog_id, __u32 *fd_type, |
| __u64 *probe_offset, __u64 *probe_addr); |
| |
| enum bpf_stats_type; /* defined in up-to-date linux/bpf.h */ |
| LIBBPF_API int bpf_enable_stats(enum bpf_stats_type type); |
| |
| struct bpf_prog_bind_opts { |
| size_t sz; /* size of this struct for forward/backward compatibility */ |
| __u32 flags; |
| }; |
| #define bpf_prog_bind_opts__last_field flags |
| |
| LIBBPF_API int bpf_prog_bind_map(int prog_fd, int map_fd, |
| const struct bpf_prog_bind_opts *opts); |
| |
| struct bpf_test_run_opts { |
| size_t sz; /* size of this struct for forward/backward compatibility */ |
| const void *data_in; /* optional */ |
| void *data_out; /* optional */ |
| __u32 data_size_in; |
| __u32 data_size_out; /* in: max length of data_out |
| * out: length of data_out |
| */ |
| const void *ctx_in; /* optional */ |
| void *ctx_out; /* optional */ |
| __u32 ctx_size_in; |
| __u32 ctx_size_out; /* in: max length of ctx_out |
| * out: length of cxt_out |
| */ |
| __u32 retval; /* out: return code of the BPF program */ |
| int repeat; |
| __u32 duration; /* out: average per repetition in ns */ |
| __u32 flags; |
| __u32 cpu; |
| }; |
| #define bpf_test_run_opts__last_field cpu |
| |
| LIBBPF_API int bpf_prog_test_run_opts(int prog_fd, |
| struct bpf_test_run_opts *opts); |
| |
| #ifdef __cplusplus |
| } /* extern "C" */ |
| #endif |
| |
| #endif /* __LIBBPF_BPF_H */ |