11bc38b8fSAlexei Starovoitov /* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */ 26061a3d6SEric Leblond 3e3ed2fefSWang Nan /* 4e3ed2fefSWang Nan * common eBPF ELF operations. 5e3ed2fefSWang Nan * 6e3ed2fefSWang Nan * Copyright (C) 2013-2015 Alexei Starovoitov <ast@kernel.org> 7e3ed2fefSWang Nan * Copyright (C) 2015 Wang Nan <wangnan0@huawei.com> 8e3ed2fefSWang Nan * Copyright (C) 2015 Huawei Inc. 9203d1cacSWang Nan * 10203d1cacSWang Nan * This program is free software; you can redistribute it and/or 11203d1cacSWang Nan * modify it under the terms of the GNU Lesser General Public 12203d1cacSWang Nan * License as published by the Free Software Foundation; 13203d1cacSWang Nan * version 2.1 of the License (not later!) 14203d1cacSWang Nan * 15203d1cacSWang Nan * This program is distributed in the hope that it will be useful, 16203d1cacSWang Nan * but WITHOUT ANY WARRANTY; without even the implied warranty of 17203d1cacSWang Nan * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18203d1cacSWang Nan * GNU Lesser General Public License for more details. 19203d1cacSWang Nan * 20203d1cacSWang Nan * You should have received a copy of the GNU Lesser General Public 21203d1cacSWang Nan * License along with this program; if not, see <http://www.gnu.org/licenses> 22e3ed2fefSWang Nan */ 23eff81908SAndrey Ignatov #ifndef __LIBBPF_BPF_H 24eff81908SAndrey Ignatov #define __LIBBPF_BPF_H 25e3ed2fefSWang Nan 26e3ed2fefSWang Nan #include <linux/bpf.h> 27878a4d32SBjörn Töpel #include <stdbool.h> 287a5980f9SMickaël Salaün #include <stddef.h> 2932e621e5SDaniel T. Lee #include <stdint.h> 30e3ed2fefSWang Nan 31544402d4SAndrii Nakryiko #include "libbpf_common.h" 32544402d4SAndrii Nakryiko 338c4905b9SStanislav Fomichev #ifdef __cplusplus 348c4905b9SStanislav Fomichev extern "C" { 358c4905b9SStanislav Fomichev #endif 368c4905b9SStanislav Fomichev 378a138aedSMartin KaFai Lau struct bpf_create_map_attr { 388a138aedSMartin KaFai Lau const char *name; 398a138aedSMartin KaFai Lau enum bpf_map_type map_type; 408a138aedSMartin KaFai Lau __u32 map_flags; 418a138aedSMartin KaFai Lau __u32 key_size; 428a138aedSMartin KaFai Lau __u32 value_size; 438a138aedSMartin KaFai Lau __u32 max_entries; 448a138aedSMartin KaFai Lau __u32 numa_node; 458a138aedSMartin KaFai Lau __u32 btf_fd; 4661746dbeSMartin KaFai Lau __u32 btf_key_type_id; 4761746dbeSMartin KaFai Lau __u32 btf_value_type_id; 48f0307a7eSDavid Beckett __u32 map_ifindex; 4991134d84SMartin KaFai Lau __u32 inner_map_fd; 508a138aedSMartin KaFai Lau }; 518a138aedSMartin KaFai Lau 52ab9e0848SAndrey Ignatov LIBBPF_API int 53ab9e0848SAndrey Ignatov bpf_create_map_xattr(const struct bpf_create_map_attr *create_attr); 54ab9e0848SAndrey Ignatov LIBBPF_API int bpf_create_map_node(enum bpf_map_type map_type, const char *name, 55ab9e0848SAndrey Ignatov int key_size, int value_size, 56ab9e0848SAndrey Ignatov int max_entries, __u32 map_flags, int node); 57ab9e0848SAndrey Ignatov LIBBPF_API int bpf_create_map_name(enum bpf_map_type map_type, const char *name, 58ab9e0848SAndrey Ignatov int key_size, int value_size, 59a5580c7fSJoe Stringer int max_entries, __u32 map_flags); 60ab9e0848SAndrey Ignatov LIBBPF_API int bpf_create_map(enum bpf_map_type map_type, int key_size, 61ab9e0848SAndrey Ignatov int value_size, int max_entries, __u32 map_flags); 62ab9e0848SAndrey Ignatov LIBBPF_API int bpf_create_map_in_map_node(enum bpf_map_type map_type, 63ab9e0848SAndrey Ignatov const char *name, int key_size, 64ab9e0848SAndrey Ignatov int inner_map_fd, int max_entries, 65ad17d0e6SMartin KaFai Lau __u32 map_flags, int node); 66ab9e0848SAndrey Ignatov LIBBPF_API int bpf_create_map_in_map(enum bpf_map_type map_type, 67ab9e0848SAndrey Ignatov const char *name, int key_size, 68ab9e0848SAndrey Ignatov int inner_map_fd, int max_entries, 6988cda1c9SMartin KaFai Lau __u32 map_flags); 70e3ed2fefSWang Nan 71d7be143bSAndrey Ignatov struct bpf_load_program_attr { 72d7be143bSAndrey Ignatov enum bpf_prog_type prog_type; 73d7be143bSAndrey Ignatov enum bpf_attach_type expected_attach_type; 74d7be143bSAndrey Ignatov const char *name; 75d7be143bSAndrey Ignatov const struct bpf_insn *insns; 76d7be143bSAndrey Ignatov size_t insns_cnt; 77d7be143bSAndrey Ignatov const char *license; 78e7bf94dbSAlexei Starovoitov union { 79d7be143bSAndrey Ignatov __u32 kern_version; 80e7bf94dbSAlexei Starovoitov __u32 attach_prog_fd; 81e7bf94dbSAlexei Starovoitov }; 8212a8654bSAlexei Starovoitov union { 83f0307a7eSDavid Beckett __u32 prog_ifindex; 8412a8654bSAlexei Starovoitov __u32 attach_btf_id; 8512a8654bSAlexei Starovoitov }; 867e0d0fb5SYonghong Song __u32 prog_btf_fd; 877e0d0fb5SYonghong Song __u32 func_info_rec_size; 887e0d0fb5SYonghong Song const void *func_info; 897e0d0fb5SYonghong Song __u32 func_info_cnt; 903d650141SMartin KaFai Lau __u32 line_info_rec_size; 913d650141SMartin KaFai Lau const void *line_info; 923d650141SMartin KaFai Lau __u32 line_info_cnt; 93a4021a35SYonghong Song __u32 log_level; 9404656198SJiong Wang __u32 prog_flags; 95d7be143bSAndrey Ignatov }; 96d7be143bSAndrey Ignatov 97c034a177SJohn Fastabend /* Flags to direct loading requirements */ 98c034a177SJohn Fastabend #define MAPS_RELAX_COMPAT 0x01 99c034a177SJohn Fastabend 1007bf98369SWang Nan /* Recommend log buffer size */ 1014519efa6SMcCabe, Robert J #define BPF_LOG_BUF_SIZE (UINT32_MAX >> 8) /* verifier maximum in kernels <= 5.1 */ 102ab9e0848SAndrey Ignatov LIBBPF_API int 103ab9e0848SAndrey Ignatov bpf_load_program_xattr(const struct bpf_load_program_attr *load_attr, 104d7be143bSAndrey Ignatov char *log_buf, size_t log_buf_sz); 105ab9e0848SAndrey Ignatov LIBBPF_API int bpf_load_program(enum bpf_prog_type type, 106ab9e0848SAndrey Ignatov const struct bpf_insn *insns, size_t insns_cnt, 107ab9e0848SAndrey Ignatov const char *license, __u32 kern_version, 108ab9e0848SAndrey Ignatov char *log_buf, size_t log_buf_sz); 109ab9e0848SAndrey Ignatov LIBBPF_API int bpf_verify_program(enum bpf_prog_type type, 110ab9e0848SAndrey Ignatov const struct bpf_insn *insns, 111e9ee9efcSDavid Miller size_t insns_cnt, __u32 prog_flags, 11291045f5eSDavid S. Miller const char *license, __u32 kern_version, 113ab9e0848SAndrey Ignatov char *log_buf, size_t log_buf_sz, 114ab9e0848SAndrey Ignatov int log_level); 1157bf98369SWang Nan 116ab9e0848SAndrey Ignatov LIBBPF_API int bpf_map_update_elem(int fd, const void *key, const void *value, 11783d994d0SJoe Stringer __u64 flags); 1189742da01SWang Nan 119ab9e0848SAndrey Ignatov LIBBPF_API int bpf_map_lookup_elem(int fd, const void *key, void *value); 120df5d22faSAlexei Starovoitov LIBBPF_API int bpf_map_lookup_elem_flags(int fd, const void *key, void *value, 121df5d22faSAlexei Starovoitov __u64 flags); 12243b987d2SMauricio Vasquez B LIBBPF_API int bpf_map_lookup_and_delete_elem(int fd, const void *key, 12343b987d2SMauricio Vasquez B void *value); 124ab9e0848SAndrey Ignatov LIBBPF_API int bpf_map_delete_elem(int fd, const void *key); 125ab9e0848SAndrey Ignatov LIBBPF_API int bpf_map_get_next_key(int fd, const void *key, void *next_key); 126d859900cSDaniel Borkmann LIBBPF_API int bpf_map_freeze(int fd); 127ab9e0848SAndrey Ignatov LIBBPF_API int bpf_obj_pin(int fd, const char *pathname); 128ab9e0848SAndrey Ignatov LIBBPF_API int bpf_obj_get(const char *pathname); 129*cdbee383SAndrey Ignatov 130*cdbee383SAndrey Ignatov struct bpf_prog_attach_opts { 131*cdbee383SAndrey Ignatov size_t sz; /* size of this struct for forward/backward compatibility */ 132*cdbee383SAndrey Ignatov unsigned int flags; 133*cdbee383SAndrey Ignatov int replace_prog_fd; 134*cdbee383SAndrey Ignatov }; 135*cdbee383SAndrey Ignatov #define bpf_prog_attach_opts__last_field replace_prog_fd 136*cdbee383SAndrey Ignatov 137ab9e0848SAndrey Ignatov LIBBPF_API int bpf_prog_attach(int prog_fd, int attachable_fd, 138ab9e0848SAndrey Ignatov enum bpf_attach_type type, unsigned int flags); 139*cdbee383SAndrey Ignatov LIBBPF_API int bpf_prog_attach_xattr(int prog_fd, int attachable_fd, 140*cdbee383SAndrey Ignatov enum bpf_attach_type type, 141*cdbee383SAndrey Ignatov const struct bpf_prog_attach_opts *opts); 142ab9e0848SAndrey Ignatov LIBBPF_API int bpf_prog_detach(int attachable_fd, enum bpf_attach_type type); 143ab9e0848SAndrey Ignatov LIBBPF_API int bpf_prog_detach2(int prog_fd, int attachable_fd, 144ab9e0848SAndrey Ignatov enum bpf_attach_type type); 14564a97591SLorenz Bauer 14664a97591SLorenz Bauer struct bpf_prog_test_run_attr { 14764a97591SLorenz Bauer int prog_fd; 14864a97591SLorenz Bauer int repeat; 14964a97591SLorenz Bauer const void *data_in; 15064a97591SLorenz Bauer __u32 data_size_in; 15164a97591SLorenz Bauer void *data_out; /* optional */ 15264a97591SLorenz Bauer __u32 data_size_out; /* in: max length of data_out 15364a97591SLorenz Bauer * out: length of data_out */ 15464a97591SLorenz Bauer __u32 retval; /* out: return code of the BPF program */ 15564a97591SLorenz Bauer __u32 duration; /* out: average per repetition in ns */ 1565e903c65SStanislav Fomichev const void *ctx_in; /* optional */ 1575e903c65SStanislav Fomichev __u32 ctx_size_in; 1585e903c65SStanislav Fomichev void *ctx_out; /* optional */ 1595e903c65SStanislav Fomichev __u32 ctx_size_out; /* in: max length of ctx_out 1605e903c65SStanislav Fomichev * out: length of cxt_out */ 16164a97591SLorenz Bauer }; 16264a97591SLorenz Bauer 16364a97591SLorenz Bauer LIBBPF_API int bpf_prog_test_run_xattr(struct bpf_prog_test_run_attr *test_attr); 16464a97591SLorenz Bauer 16564a97591SLorenz Bauer /* 16664a97591SLorenz Bauer * bpf_prog_test_run does not check that data_out is large enough. Consider 16764a97591SLorenz Bauer * using bpf_prog_test_run_xattr instead. 16864a97591SLorenz Bauer */ 169ab9e0848SAndrey Ignatov LIBBPF_API int bpf_prog_test_run(int prog_fd, int repeat, void *data, 170ab9e0848SAndrey Ignatov __u32 size, void *data_out, __u32 *size_out, 171ab9e0848SAndrey Ignatov __u32 *retval, __u32 *duration); 172ab9e0848SAndrey Ignatov LIBBPF_API int bpf_prog_get_next_id(__u32 start_id, __u32 *next_id); 173ab9e0848SAndrey Ignatov LIBBPF_API int bpf_map_get_next_id(__u32 start_id, __u32 *next_id); 17409d7c2e3SQuentin Monnet LIBBPF_API int bpf_btf_get_next_id(__u32 start_id, __u32 *next_id); 175ab9e0848SAndrey Ignatov LIBBPF_API int bpf_prog_get_fd_by_id(__u32 id); 176ab9e0848SAndrey Ignatov LIBBPF_API int bpf_map_get_fd_by_id(__u32 id); 177ab9e0848SAndrey Ignatov LIBBPF_API int bpf_btf_get_fd_by_id(__u32 id); 178ab9e0848SAndrey Ignatov LIBBPF_API int bpf_obj_get_info_by_fd(int prog_fd, void *info, __u32 *info_len); 179ab9e0848SAndrey Ignatov LIBBPF_API int bpf_prog_query(int target_fd, enum bpf_attach_type type, 180ab9e0848SAndrey Ignatov __u32 query_flags, __u32 *attach_flags, 181ab9e0848SAndrey Ignatov __u32 *prog_ids, __u32 *prog_cnt); 182ab9e0848SAndrey Ignatov LIBBPF_API int bpf_raw_tracepoint_open(const char *name, int prog_fd); 183ab9e0848SAndrey Ignatov LIBBPF_API int bpf_load_btf(void *btf, __u32 btf_size, char *log_buf, 184ab9e0848SAndrey Ignatov __u32 log_buf_size, bool do_log); 185ab9e0848SAndrey Ignatov LIBBPF_API int bpf_task_fd_query(int pid, int fd, __u32 flags, char *buf, 186ab9e0848SAndrey Ignatov __u32 *buf_len, __u32 *prog_id, __u32 *fd_type, 187ab9e0848SAndrey Ignatov __u64 *probe_offset, __u64 *probe_addr); 1888c4905b9SStanislav Fomichev 1898c4905b9SStanislav Fomichev #ifdef __cplusplus 1908c4905b9SStanislav Fomichev } /* extern "C" */ 1918c4905b9SStanislav Fomichev #endif 1928c4905b9SStanislav Fomichev 193eff81908SAndrey Ignatov #endif /* __LIBBPF_BPF_H */ 194