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" 32be80e9cdSAndrii Nakryiko #include "libbpf_legacy.h" 33544402d4SAndrii Nakryiko 348c4905b9SStanislav Fomichev #ifdef __cplusplus 358c4905b9SStanislav Fomichev extern "C" { 368c4905b9SStanislav Fomichev #endif 378c4905b9SStanislav Fomichev 38e542f2c4SAndrii Nakryiko int libbpf_set_memlock_rlim(size_t memlock_bytes); 39e542f2c4SAndrii Nakryiko 40992c4225SAndrii Nakryiko struct bpf_map_create_opts { 41992c4225SAndrii Nakryiko size_t sz; /* size of this struct for forward/backward compatibility */ 42992c4225SAndrii Nakryiko 43992c4225SAndrii Nakryiko __u32 btf_fd; 44992c4225SAndrii Nakryiko __u32 btf_key_type_id; 45992c4225SAndrii Nakryiko __u32 btf_value_type_id; 46992c4225SAndrii Nakryiko __u32 btf_vmlinux_value_type_id; 47992c4225SAndrii Nakryiko 4874d98070SAndrii Nakryiko __u32 inner_map_fd; 4974d98070SAndrii Nakryiko __u32 map_flags; 50992c4225SAndrii Nakryiko __u64 map_extra; 51992c4225SAndrii Nakryiko 5274d98070SAndrii Nakryiko __u32 numa_node; 5374d98070SAndrii Nakryiko __u32 map_ifindex; 54992c4225SAndrii Nakryiko }; 55992c4225SAndrii Nakryiko #define bpf_map_create_opts__last_field map_ifindex 56992c4225SAndrii Nakryiko 57992c4225SAndrii Nakryiko LIBBPF_API int bpf_map_create(enum bpf_map_type map_type, 58992c4225SAndrii Nakryiko const char *map_name, 59992c4225SAndrii Nakryiko __u32 key_size, 60992c4225SAndrii Nakryiko __u32 value_size, 61992c4225SAndrii Nakryiko __u32 max_entries, 62992c4225SAndrii Nakryiko const struct bpf_map_create_opts *opts); 63992c4225SAndrii Nakryiko 64d10ef2b8SAndrii Nakryiko struct bpf_prog_load_opts { 65d10ef2b8SAndrii Nakryiko size_t sz; /* size of this struct for forward/backward compatibility */ 66d10ef2b8SAndrii Nakryiko 67d10ef2b8SAndrii Nakryiko /* libbpf can retry BPF_PROG_LOAD command if bpf() syscall returns 68d10ef2b8SAndrii Nakryiko * -EAGAIN. This field determines how many attempts libbpf has to 69d10ef2b8SAndrii Nakryiko * make. If not specified, libbpf will use default value of 5. 70d10ef2b8SAndrii Nakryiko */ 71d10ef2b8SAndrii Nakryiko int attempts; 72d10ef2b8SAndrii Nakryiko 73d10ef2b8SAndrii Nakryiko enum bpf_attach_type expected_attach_type; 74d10ef2b8SAndrii Nakryiko __u32 prog_btf_fd; 75d10ef2b8SAndrii Nakryiko __u32 prog_flags; 76d10ef2b8SAndrii Nakryiko __u32 prog_ifindex; 77d10ef2b8SAndrii Nakryiko __u32 kern_version; 78d10ef2b8SAndrii Nakryiko 79d10ef2b8SAndrii Nakryiko __u32 attach_btf_id; 80d10ef2b8SAndrii Nakryiko __u32 attach_prog_fd; 81d10ef2b8SAndrii Nakryiko __u32 attach_btf_obj_fd; 82d10ef2b8SAndrii Nakryiko 83d10ef2b8SAndrii Nakryiko const int *fd_array; 84d10ef2b8SAndrii Nakryiko 85d10ef2b8SAndrii Nakryiko /* .BTF.ext func info data */ 86d10ef2b8SAndrii Nakryiko const void *func_info; 87d10ef2b8SAndrii Nakryiko __u32 func_info_cnt; 88d10ef2b8SAndrii Nakryiko __u32 func_info_rec_size; 89d10ef2b8SAndrii Nakryiko 90d10ef2b8SAndrii Nakryiko /* .BTF.ext line info data */ 91d10ef2b8SAndrii Nakryiko const void *line_info; 92d10ef2b8SAndrii Nakryiko __u32 line_info_cnt; 93d10ef2b8SAndrii Nakryiko __u32 line_info_rec_size; 94d10ef2b8SAndrii Nakryiko 95d10ef2b8SAndrii Nakryiko /* verifier log options */ 96d10ef2b8SAndrii Nakryiko __u32 log_level; 97d10ef2b8SAndrii Nakryiko __u32 log_size; 98d10ef2b8SAndrii Nakryiko char *log_buf; 99d10ef2b8SAndrii Nakryiko }; 100d10ef2b8SAndrii Nakryiko #define bpf_prog_load_opts__last_field log_buf 101d10ef2b8SAndrii Nakryiko 102d10ef2b8SAndrii Nakryiko LIBBPF_API int bpf_prog_load(enum bpf_prog_type prog_type, 103d10ef2b8SAndrii Nakryiko const char *prog_name, const char *license, 104d10ef2b8SAndrii Nakryiko const struct bpf_insn *insns, size_t insn_cnt, 105d10ef2b8SAndrii Nakryiko const struct bpf_prog_load_opts *opts); 106d7be143bSAndrey Ignatov 107c034a177SJohn Fastabend /* Flags to direct loading requirements */ 108c034a177SJohn Fastabend #define MAPS_RELAX_COMPAT 0x01 109c034a177SJohn Fastabend 110e0e3ea88SAndrii Nakryiko /* Recommended log buffer size */ 1114519efa6SMcCabe, Robert J #define BPF_LOG_BUF_SIZE (UINT32_MAX >> 8) /* verifier maximum in kernels <= 5.1 */ 112e0e3ea88SAndrii Nakryiko 1130ed08d67SAndrii Nakryiko struct bpf_btf_load_opts { 1140ed08d67SAndrii Nakryiko size_t sz; /* size of this struct for forward/backward compatibility */ 1150ed08d67SAndrii Nakryiko 1160ed08d67SAndrii Nakryiko /* kernel log options */ 1170ed08d67SAndrii Nakryiko char *log_buf; 1180ed08d67SAndrii Nakryiko __u32 log_level; 1190ed08d67SAndrii Nakryiko __u32 log_size; 1200ed08d67SAndrii Nakryiko }; 1210ed08d67SAndrii Nakryiko #define bpf_btf_load_opts__last_field log_size 1220ed08d67SAndrii Nakryiko 1230ed08d67SAndrii Nakryiko LIBBPF_API int bpf_btf_load(const void *btf_data, size_t btf_size, 1240ed08d67SAndrii Nakryiko const struct bpf_btf_load_opts *opts); 1250ed08d67SAndrii Nakryiko 126ab9e0848SAndrey Ignatov LIBBPF_API int bpf_map_update_elem(int fd, const void *key, const void *value, 12783d994d0SJoe Stringer __u64 flags); 1289742da01SWang Nan 129ab9e0848SAndrey Ignatov LIBBPF_API int bpf_map_lookup_elem(int fd, const void *key, void *value); 130df5d22faSAlexei Starovoitov LIBBPF_API int bpf_map_lookup_elem_flags(int fd, const void *key, void *value, 131df5d22faSAlexei Starovoitov __u64 flags); 13243b987d2SMauricio Vasquez B LIBBPF_API int bpf_map_lookup_and_delete_elem(int fd, const void *key, 13343b987d2SMauricio Vasquez B void *value); 134d59b9f2dSDenis Salopek LIBBPF_API int bpf_map_lookup_and_delete_elem_flags(int fd, const void *key, 135d59b9f2dSDenis Salopek void *value, __u64 flags); 136ab9e0848SAndrey Ignatov LIBBPF_API int bpf_map_delete_elem(int fd, const void *key); 137737d0646SAndrii Nakryiko LIBBPF_API int bpf_map_delete_elem_flags(int fd, const void *key, __u64 flags); 138ab9e0848SAndrey Ignatov LIBBPF_API int bpf_map_get_next_key(int fd, const void *key, void *next_key); 139d859900cSDaniel Borkmann LIBBPF_API int bpf_map_freeze(int fd); 1402ab3d86eSYonghong Song 1412ab3d86eSYonghong Song struct bpf_map_batch_opts { 1422ab3d86eSYonghong Song size_t sz; /* size of this struct for forward/backward compatibility */ 1432ab3d86eSYonghong Song __u64 elem_flags; 1442ab3d86eSYonghong Song __u64 flags; 1452ab3d86eSYonghong Song }; 1462ab3d86eSYonghong Song #define bpf_map_batch_opts__last_field flags 1472ab3d86eSYonghong Song 148e59618f0SGrant Seltzer 149e59618f0SGrant Seltzer /** 150e59618f0SGrant Seltzer * @brief **bpf_map_delete_batch()** allows for batch deletion of multiple 151e59618f0SGrant Seltzer * elements in a BPF map. 152e59618f0SGrant Seltzer * 153e59618f0SGrant Seltzer * @param fd BPF map file descriptor 154e59618f0SGrant Seltzer * @param keys pointer to an array of *count* keys 155e59618f0SGrant Seltzer * @param count input and output parameter; on input **count** represents the 156e59618f0SGrant Seltzer * number of elements in the map to delete in batch; 157e59618f0SGrant Seltzer * on output if a non-EFAULT error is returned, **count** represents the number of deleted 158e59618f0SGrant Seltzer * elements if the output **count** value is not equal to the input **count** value 159e59618f0SGrant Seltzer * If EFAULT is returned, **count** should not be trusted to be correct. 160e59618f0SGrant Seltzer * @param opts options for configuring the way the batch deletion works 161e59618f0SGrant Seltzer * @return 0, on success; negative error code, otherwise (errno is also set to 162e59618f0SGrant Seltzer * the error code) 163e59618f0SGrant Seltzer */ 164e59618f0SGrant Seltzer LIBBPF_API int bpf_map_delete_batch(int fd, const void *keys, 1652ab3d86eSYonghong Song __u32 *count, 1662ab3d86eSYonghong Song const struct bpf_map_batch_opts *opts); 167e59618f0SGrant Seltzer 168e59618f0SGrant Seltzer /** 169e59618f0SGrant Seltzer * @brief **bpf_map_lookup_batch()** allows for batch lookup of BPF map elements. 170e59618f0SGrant Seltzer * 171e59618f0SGrant Seltzer * The parameter *in_batch* is the address of the first element in the batch to read. 172e59618f0SGrant Seltzer * *out_batch* is an output parameter that should be passed as *in_batch* to subsequent 173e59618f0SGrant Seltzer * calls to **bpf_map_lookup_batch()**. NULL can be passed for *in_batch* to indicate 174e59618f0SGrant Seltzer * that the batched lookup starts from the beginning of the map. 175e59618f0SGrant Seltzer * 176e59618f0SGrant Seltzer * The *keys* and *values* are output parameters which must point to memory large enough to 177e59618f0SGrant Seltzer * hold *count* items based on the key and value size of the map *map_fd*. The *keys* 178e59618f0SGrant Seltzer * buffer must be of *key_size* * *count*. The *values* buffer must be of 179e59618f0SGrant Seltzer * *value_size* * *count*. 180e59618f0SGrant Seltzer * 181e59618f0SGrant Seltzer * @param fd BPF map file descriptor 182e59618f0SGrant Seltzer * @param in_batch address of the first element in batch to read, can pass NULL to 183e59618f0SGrant Seltzer * indicate that the batched lookup starts from the beginning of the map. 184e59618f0SGrant Seltzer * @param out_batch output parameter that should be passed to next call as *in_batch* 185e59618f0SGrant Seltzer * @param keys pointer to an array large enough for *count* keys 186e59618f0SGrant Seltzer * @param values pointer to an array large enough for *count* values 187e59618f0SGrant Seltzer * @param count input and output parameter; on input it's the number of elements 188e59618f0SGrant Seltzer * in the map to read in batch; on output it's the number of elements that were 189e59618f0SGrant Seltzer * successfully read. 190e59618f0SGrant Seltzer * If a non-EFAULT error is returned, count will be set as the number of elements 191e59618f0SGrant Seltzer * that were read before the error occurred. 192e59618f0SGrant Seltzer * If EFAULT is returned, **count** should not be trusted to be correct. 193e59618f0SGrant Seltzer * @param opts options for configuring the way the batch lookup works 194e59618f0SGrant Seltzer * @return 0, on success; negative error code, otherwise (errno is also set to 195e59618f0SGrant Seltzer * the error code) 196e59618f0SGrant Seltzer */ 1972ab3d86eSYonghong Song LIBBPF_API int bpf_map_lookup_batch(int fd, void *in_batch, void *out_batch, 1982ab3d86eSYonghong Song void *keys, void *values, __u32 *count, 1992ab3d86eSYonghong Song const struct bpf_map_batch_opts *opts); 200e59618f0SGrant Seltzer 201e59618f0SGrant Seltzer /** 202e59618f0SGrant Seltzer * @brief **bpf_map_lookup_and_delete_batch()** allows for batch lookup and deletion 203e59618f0SGrant Seltzer * of BPF map elements where each element is deleted after being retrieved. 204e59618f0SGrant Seltzer * 205e59618f0SGrant Seltzer * @param fd BPF map file descriptor 206e59618f0SGrant Seltzer * @param in_batch address of the first element in batch to read, can pass NULL to 207e59618f0SGrant Seltzer * get address of the first element in *out_batch* 208e59618f0SGrant Seltzer * @param out_batch output parameter that should be passed to next call as *in_batch* 209e59618f0SGrant Seltzer * @param keys pointer to an array of *count* keys 210e59618f0SGrant Seltzer * @param values pointer to an array large enough for *count* values 211e59618f0SGrant Seltzer * @param count input and output parameter; on input it's the number of elements 212e59618f0SGrant Seltzer * in the map to read and delete in batch; on output it represents the number of 213e59618f0SGrant Seltzer * elements that were successfully read and deleted 214e59618f0SGrant Seltzer * If a non-**EFAULT** error code is returned and if the output **count** value 215e59618f0SGrant Seltzer * is not equal to the input **count** value, up to **count** elements may 216e59618f0SGrant Seltzer * have been deleted. 217e59618f0SGrant Seltzer * if **EFAULT** is returned up to *count* elements may have been deleted without 218e59618f0SGrant Seltzer * being returned via the *keys* and *values* output parameters. 219e59618f0SGrant Seltzer * @param opts options for configuring the way the batch lookup and delete works 220e59618f0SGrant Seltzer * @return 0, on success; negative error code, otherwise (errno is also set to 221e59618f0SGrant Seltzer * the error code) 222e59618f0SGrant Seltzer */ 2232ab3d86eSYonghong Song LIBBPF_API int bpf_map_lookup_and_delete_batch(int fd, void *in_batch, 2242ab3d86eSYonghong Song void *out_batch, void *keys, 2252ab3d86eSYonghong Song void *values, __u32 *count, 2262ab3d86eSYonghong Song const struct bpf_map_batch_opts *opts); 227e59618f0SGrant Seltzer 228e59618f0SGrant Seltzer /** 229e59618f0SGrant Seltzer * @brief **bpf_map_update_batch()** updates multiple elements in a map 230e59618f0SGrant Seltzer * by specifying keys and their corresponding values. 231e59618f0SGrant Seltzer * 232e59618f0SGrant Seltzer * The *keys* and *values* parameters must point to memory large enough 233e59618f0SGrant Seltzer * to hold *count* items based on the key and value size of the map. 234e59618f0SGrant Seltzer * 235e59618f0SGrant Seltzer * The *opts* parameter can be used to control how *bpf_map_update_batch()* 236e59618f0SGrant Seltzer * should handle keys that either do or do not already exist in the map. 237e59618f0SGrant Seltzer * In particular the *flags* parameter of *bpf_map_batch_opts* can be 238e59618f0SGrant Seltzer * one of the following: 239e59618f0SGrant Seltzer * 240e59618f0SGrant Seltzer * Note that *count* is an input and output parameter, where on output it 241e59618f0SGrant Seltzer * represents how many elements were successfully updated. Also note that if 242e59618f0SGrant Seltzer * **EFAULT** then *count* should not be trusted to be correct. 243e59618f0SGrant Seltzer * 244e59618f0SGrant Seltzer * **BPF_ANY** 245e59618f0SGrant Seltzer * Create new elements or update existing. 246e59618f0SGrant Seltzer * 247e59618f0SGrant Seltzer * **BPF_NOEXIST** 248e59618f0SGrant Seltzer * Create new elements only if they do not exist. 249e59618f0SGrant Seltzer * 250e59618f0SGrant Seltzer * **BPF_EXIST** 251e59618f0SGrant Seltzer * Update existing elements. 252e59618f0SGrant Seltzer * 253e59618f0SGrant Seltzer * **BPF_F_LOCK** 254e59618f0SGrant Seltzer * Update spin_lock-ed map elements. This must be 255e59618f0SGrant Seltzer * specified if the map value contains a spinlock. 256e59618f0SGrant Seltzer * 257e59618f0SGrant Seltzer * @param fd BPF map file descriptor 258e59618f0SGrant Seltzer * @param keys pointer to an array of *count* keys 259e59618f0SGrant Seltzer * @param values pointer to an array of *count* values 260e59618f0SGrant Seltzer * @param count input and output parameter; on input it's the number of elements 261e59618f0SGrant Seltzer * in the map to update in batch; on output if a non-EFAULT error is returned, 262e59618f0SGrant Seltzer * **count** represents the number of updated elements if the output **count** 263e59618f0SGrant Seltzer * value is not equal to the input **count** value. 264e59618f0SGrant Seltzer * If EFAULT is returned, **count** should not be trusted to be correct. 265e59618f0SGrant Seltzer * @param opts options for configuring the way the batch update works 266e59618f0SGrant Seltzer * @return 0, on success; negative error code, otherwise (errno is also set to 267e59618f0SGrant Seltzer * the error code) 268e59618f0SGrant Seltzer */ 269e59618f0SGrant Seltzer LIBBPF_API int bpf_map_update_batch(int fd, const void *keys, const void *values, 2702ab3d86eSYonghong Song __u32 *count, 2712ab3d86eSYonghong Song const struct bpf_map_batch_opts *opts); 2722ab3d86eSYonghong Song 273395fc4faSJoe Burton struct bpf_obj_get_opts { 274395fc4faSJoe Burton size_t sz; /* size of this struct for forward/backward compatibility */ 275395fc4faSJoe Burton 276395fc4faSJoe Burton __u32 file_flags; 277395fc4faSJoe Burton 278395fc4faSJoe Burton size_t :0; 279395fc4faSJoe Burton }; 280395fc4faSJoe Burton #define bpf_obj_get_opts__last_field file_flags 281395fc4faSJoe Burton 282ab9e0848SAndrey Ignatov LIBBPF_API int bpf_obj_pin(int fd, const char *pathname); 283ab9e0848SAndrey Ignatov LIBBPF_API int bpf_obj_get(const char *pathname); 284395fc4faSJoe Burton LIBBPF_API int bpf_obj_get_opts(const char *pathname, 285395fc4faSJoe Burton const struct bpf_obj_get_opts *opts); 286cdbee383SAndrey Ignatov 287cdbee383SAndrey Ignatov struct bpf_prog_attach_opts { 288cdbee383SAndrey Ignatov size_t sz; /* size of this struct for forward/backward compatibility */ 289cdbee383SAndrey Ignatov unsigned int flags; 290cdbee383SAndrey Ignatov int replace_prog_fd; 291cdbee383SAndrey Ignatov }; 292cdbee383SAndrey Ignatov #define bpf_prog_attach_opts__last_field replace_prog_fd 293cdbee383SAndrey Ignatov 294ab9e0848SAndrey Ignatov LIBBPF_API int bpf_prog_attach(int prog_fd, int attachable_fd, 295ab9e0848SAndrey Ignatov enum bpf_attach_type type, unsigned int flags); 296d6c9c24eSChristy Lee LIBBPF_API int bpf_prog_attach_opts(int prog_fd, int attachable_fd, 297d6c9c24eSChristy Lee enum bpf_attach_type type, 298d6c9c24eSChristy Lee const struct bpf_prog_attach_opts *opts); 299ab9e0848SAndrey Ignatov LIBBPF_API int bpf_prog_detach(int attachable_fd, enum bpf_attach_type type); 300ab9e0848SAndrey Ignatov LIBBPF_API int bpf_prog_detach2(int prog_fd, int attachable_fd, 301ab9e0848SAndrey Ignatov enum bpf_attach_type type); 30264a97591SLorenz Bauer 30374fc097dSYonghong Song union bpf_iter_link_info; /* defined in up-to-date linux/bpf.h */ 304cc4f864bSAndrii Nakryiko struct bpf_link_create_opts { 305cc4f864bSAndrii Nakryiko size_t sz; /* size of this struct for forward/backward compatibility */ 306cd31039aSYonghong Song __u32 flags; 30774fc097dSYonghong Song union bpf_iter_link_info *iter_info; 30874fc097dSYonghong Song __u32 iter_info_len; 309a5359091SToke Høiland-Jørgensen __u32 target_btf_id; 3103ec84f4bSAndrii Nakryiko union { 3113ec84f4bSAndrii Nakryiko struct { 3123ec84f4bSAndrii Nakryiko __u64 bpf_cookie; 3133ec84f4bSAndrii Nakryiko } perf_event; 3145117c26eSJiri Olsa struct { 3155117c26eSJiri Olsa __u32 flags; 3165117c26eSJiri Olsa __u32 cnt; 3175117c26eSJiri Olsa const char **syms; 3185117c26eSJiri Olsa const unsigned long *addrs; 3195117c26eSJiri Olsa const __u64 *cookies; 3205117c26eSJiri Olsa } kprobe_multi; 321129b9c5eSKui-Feng Lee struct { 322129b9c5eSKui-Feng Lee __u64 cookie; 323129b9c5eSKui-Feng Lee } tracing; 324cc4f864bSAndrii Nakryiko }; 3253ec84f4bSAndrii Nakryiko size_t :0; 3263ec84f4bSAndrii Nakryiko }; 3275117c26eSJiri Olsa #define bpf_link_create_opts__last_field kprobe_multi.cookies 328cc4f864bSAndrii Nakryiko 329cc4f864bSAndrii Nakryiko LIBBPF_API int bpf_link_create(int prog_fd, int target_fd, 330cc4f864bSAndrii Nakryiko enum bpf_attach_type attach_type, 331cc4f864bSAndrii Nakryiko const struct bpf_link_create_opts *opts); 332cc4f864bSAndrii Nakryiko 3332e49527eSAndrii Nakryiko LIBBPF_API int bpf_link_detach(int link_fd); 3342e49527eSAndrii Nakryiko 335cc4f864bSAndrii Nakryiko struct bpf_link_update_opts { 336cc4f864bSAndrii Nakryiko size_t sz; /* size of this struct for forward/backward compatibility */ 337cc4f864bSAndrii Nakryiko __u32 flags; /* extra flags */ 338cc4f864bSAndrii Nakryiko __u32 old_prog_fd; /* expected old program FD */ 339cc4f864bSAndrii Nakryiko }; 340cc4f864bSAndrii Nakryiko #define bpf_link_update_opts__last_field old_prog_fd 341cc4f864bSAndrii Nakryiko 342cc4f864bSAndrii Nakryiko LIBBPF_API int bpf_link_update(int link_fd, int new_prog_fd, 343cc4f864bSAndrii Nakryiko const struct bpf_link_update_opts *opts); 344cc4f864bSAndrii Nakryiko 345c09add2fSYonghong Song LIBBPF_API int bpf_iter_create(int link_fd); 346c09add2fSYonghong Song 34764a97591SLorenz Bauer struct bpf_prog_test_run_attr { 34864a97591SLorenz Bauer int prog_fd; 34964a97591SLorenz Bauer int repeat; 35064a97591SLorenz Bauer const void *data_in; 35164a97591SLorenz Bauer __u32 data_size_in; 35264a97591SLorenz Bauer void *data_out; /* optional */ 35364a97591SLorenz Bauer __u32 data_size_out; /* in: max length of data_out 35464a97591SLorenz Bauer * out: length of data_out */ 35564a97591SLorenz Bauer __u32 retval; /* out: return code of the BPF program */ 35664a97591SLorenz Bauer __u32 duration; /* out: average per repetition in ns */ 3575e903c65SStanislav Fomichev const void *ctx_in; /* optional */ 3585e903c65SStanislav Fomichev __u32 ctx_size_in; 3595e903c65SStanislav Fomichev void *ctx_out; /* optional */ 3605e903c65SStanislav Fomichev __u32 ctx_size_out; /* in: max length of ctx_out 3615e903c65SStanislav Fomichev * out: length of cxt_out */ 36264a97591SLorenz Bauer }; 36364a97591SLorenz Bauer 364ab9e0848SAndrey Ignatov LIBBPF_API int bpf_prog_get_next_id(__u32 start_id, __u32 *next_id); 365ab9e0848SAndrey Ignatov LIBBPF_API int bpf_map_get_next_id(__u32 start_id, __u32 *next_id); 36609d7c2e3SQuentin Monnet LIBBPF_API int bpf_btf_get_next_id(__u32 start_id, __u32 *next_id); 3670dbc8668SAndrii Nakryiko LIBBPF_API int bpf_link_get_next_id(__u32 start_id, __u32 *next_id); 368243e3005SRoberto Sassu 369243e3005SRoberto Sassu struct bpf_get_fd_by_id_opts { 370243e3005SRoberto Sassu size_t sz; /* size of this struct for forward/backward compatibility */ 371243e3005SRoberto Sassu __u32 open_flags; /* permissions requested for the operation on fd */ 372243e3005SRoberto Sassu size_t :0; 373243e3005SRoberto Sassu }; 374243e3005SRoberto Sassu #define bpf_get_fd_by_id_opts__last_field open_flags 375243e3005SRoberto Sassu 376ab9e0848SAndrey Ignatov LIBBPF_API int bpf_prog_get_fd_by_id(__u32 id); 3778f13f168SRoberto Sassu LIBBPF_API int bpf_prog_get_fd_by_id_opts(__u32 id, 3788f13f168SRoberto Sassu const struct bpf_get_fd_by_id_opts *opts); 379ab9e0848SAndrey Ignatov LIBBPF_API int bpf_map_get_fd_by_id(__u32 id); 380243e3005SRoberto Sassu LIBBPF_API int bpf_map_get_fd_by_id_opts(__u32 id, 381243e3005SRoberto Sassu const struct bpf_get_fd_by_id_opts *opts); 382ab9e0848SAndrey Ignatov LIBBPF_API int bpf_btf_get_fd_by_id(__u32 id); 3832ce7cbf2SRoberto Sassu LIBBPF_API int bpf_btf_get_fd_by_id_opts(__u32 id, 3842ce7cbf2SRoberto Sassu const struct bpf_get_fd_by_id_opts *opts); 3850dbc8668SAndrii Nakryiko LIBBPF_API int bpf_link_get_fd_by_id(__u32 id); 38697c8f9ddSRoberto Sassu LIBBPF_API int bpf_link_get_fd_by_id_opts(__u32 id, 38797c8f9ddSRoberto Sassu const struct bpf_get_fd_by_id_opts *opts); 3880dbc8668SAndrii Nakryiko LIBBPF_API int bpf_obj_get_info_by_fd(int bpf_fd, void *info, __u32 *info_len); 389*55a9ed0eSIlya Leoshkevich /* Type-safe variants of bpf_obj_get_info_by_fd(). The callers still needs to 390*55a9ed0eSIlya Leoshkevich * pass info_len, which should normally be 391*55a9ed0eSIlya Leoshkevich * sizeof(struct bpf_{prog,map,btf,link}_info), in order to be compatible with 392*55a9ed0eSIlya Leoshkevich * different libbpf and kernel versions. 393*55a9ed0eSIlya Leoshkevich */ 394*55a9ed0eSIlya Leoshkevich LIBBPF_API int bpf_prog_get_info_by_fd(int prog_fd, struct bpf_prog_info *info, __u32 *info_len); 395*55a9ed0eSIlya Leoshkevich LIBBPF_API int bpf_map_get_info_by_fd(int map_fd, struct bpf_map_info *info, __u32 *info_len); 396*55a9ed0eSIlya Leoshkevich LIBBPF_API int bpf_btf_get_info_by_fd(int btf_fd, struct bpf_btf_info *info, __u32 *info_len); 397*55a9ed0eSIlya Leoshkevich LIBBPF_API int bpf_link_get_info_by_fd(int link_fd, struct bpf_link_info *info, __u32 *info_len); 398a4b2f3cfSStanislav Fomichev 399a4b2f3cfSStanislav Fomichev struct bpf_prog_query_opts { 400a4b2f3cfSStanislav Fomichev size_t sz; /* size of this struct for forward/backward compatibility */ 401a4b2f3cfSStanislav Fomichev __u32 query_flags; 402a4b2f3cfSStanislav Fomichev __u32 attach_flags; /* output argument */ 403a4b2f3cfSStanislav Fomichev __u32 *prog_ids; 404a4b2f3cfSStanislav Fomichev __u32 prog_cnt; /* input+output argument */ 405a4b2f3cfSStanislav Fomichev __u32 *prog_attach_flags; 406a4b2f3cfSStanislav Fomichev }; 407a4b2f3cfSStanislav Fomichev #define bpf_prog_query_opts__last_field prog_attach_flags 408a4b2f3cfSStanislav Fomichev 409a4b2f3cfSStanislav Fomichev LIBBPF_API int bpf_prog_query_opts(int target_fd, 410a4b2f3cfSStanislav Fomichev enum bpf_attach_type type, 411a4b2f3cfSStanislav Fomichev struct bpf_prog_query_opts *opts); 412ab9e0848SAndrey Ignatov LIBBPF_API int bpf_prog_query(int target_fd, enum bpf_attach_type type, 413ab9e0848SAndrey Ignatov __u32 query_flags, __u32 *attach_flags, 414ab9e0848SAndrey Ignatov __u32 *prog_ids, __u32 *prog_cnt); 415a4b2f3cfSStanislav Fomichev 416ab9e0848SAndrey Ignatov LIBBPF_API int bpf_raw_tracepoint_open(const char *name, int prog_fd); 417ab9e0848SAndrey Ignatov LIBBPF_API int bpf_task_fd_query(int pid, int fd, __u32 flags, char *buf, 418ab9e0848SAndrey Ignatov __u32 *buf_len, __u32 *prog_id, __u32 *fd_type, 419ab9e0848SAndrey Ignatov __u64 *probe_offset, __u64 *probe_addr); 4204e15507fSAndrii Nakryiko 421b4269341SAndrii Nakryiko #ifdef __cplusplus 422b4269341SAndrii Nakryiko /* forward-declaring enums in C++ isn't compatible with pure C enums, so 423b4269341SAndrii Nakryiko * instead define bpf_enable_stats() as accepting int as an input 424b4269341SAndrii Nakryiko */ 425b4269341SAndrii Nakryiko LIBBPF_API int bpf_enable_stats(int type); 426b4269341SAndrii Nakryiko #else 4274e15507fSAndrii Nakryiko enum bpf_stats_type; /* defined in up-to-date linux/bpf.h */ 4280bee1067SSong Liu LIBBPF_API int bpf_enable_stats(enum bpf_stats_type type); 429b4269341SAndrii Nakryiko #endif 4308c4905b9SStanislav Fomichev 4315d23328dSYiFei Zhu struct bpf_prog_bind_opts { 4325d23328dSYiFei Zhu size_t sz; /* size of this struct for forward/backward compatibility */ 4335d23328dSYiFei Zhu __u32 flags; 4345d23328dSYiFei Zhu }; 4355d23328dSYiFei Zhu #define bpf_prog_bind_opts__last_field flags 4365d23328dSYiFei Zhu 4375d23328dSYiFei Zhu LIBBPF_API int bpf_prog_bind_map(int prog_fd, int map_fd, 4385d23328dSYiFei Zhu const struct bpf_prog_bind_opts *opts); 43988f7fe72SSong Liu 44088f7fe72SSong Liu struct bpf_test_run_opts { 44188f7fe72SSong Liu size_t sz; /* size of this struct for forward/backward compatibility */ 44288f7fe72SSong Liu const void *data_in; /* optional */ 44388f7fe72SSong Liu void *data_out; /* optional */ 44488f7fe72SSong Liu __u32 data_size_in; 44588f7fe72SSong Liu __u32 data_size_out; /* in: max length of data_out 44688f7fe72SSong Liu * out: length of data_out 44788f7fe72SSong Liu */ 44888f7fe72SSong Liu const void *ctx_in; /* optional */ 44988f7fe72SSong Liu void *ctx_out; /* optional */ 45088f7fe72SSong Liu __u32 ctx_size_in; 45188f7fe72SSong Liu __u32 ctx_size_out; /* in: max length of ctx_out 45288f7fe72SSong Liu * out: length of cxt_out 45388f7fe72SSong Liu */ 45488f7fe72SSong Liu __u32 retval; /* out: return code of the BPF program */ 45588f7fe72SSong Liu int repeat; 45688f7fe72SSong Liu __u32 duration; /* out: average per repetition in ns */ 45788f7fe72SSong Liu __u32 flags; 45888f7fe72SSong Liu __u32 cpu; 45924592ad1SToke Høiland-Jørgensen __u32 batch_size; 46088f7fe72SSong Liu }; 46124592ad1SToke Høiland-Jørgensen #define bpf_test_run_opts__last_field batch_size 46288f7fe72SSong Liu 46388f7fe72SSong Liu LIBBPF_API int bpf_prog_test_run_opts(int prog_fd, 46488f7fe72SSong Liu struct bpf_test_run_opts *opts); 46588f7fe72SSong Liu 4668c4905b9SStanislav Fomichev #ifdef __cplusplus 4678c4905b9SStanislav Fomichev } /* extern "C" */ 4688c4905b9SStanislav Fomichev #endif 4698c4905b9SStanislav Fomichev 470eff81908SAndrey Ignatov #endif /* __LIBBPF_BPF_H */ 471