1 /* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */ 2 3 /* 4 * Common BPF 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 __LIBBPF_BPF_H 24 #define __LIBBPF_BPF_H 25 26 #include <linux/bpf.h> 27 #include <stdbool.h> 28 #include <stddef.h> 29 #include <stdint.h> 30 31 #include "libbpf_common.h" 32 #include "libbpf_legacy.h" 33 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 int libbpf_set_memlock_rlim(size_t memlock_bytes); 39 40 struct bpf_map_create_opts { 41 size_t sz; /* size of this struct for forward/backward compatibility */ 42 43 __u32 btf_fd; 44 __u32 btf_key_type_id; 45 __u32 btf_value_type_id; 46 __u32 btf_vmlinux_value_type_id; 47 48 __u32 inner_map_fd; 49 __u32 map_flags; 50 __u64 map_extra; 51 52 __u32 numa_node; 53 __u32 map_ifindex; 54 }; 55 #define bpf_map_create_opts__last_field map_ifindex 56 57 LIBBPF_API int bpf_map_create(enum bpf_map_type map_type, 58 const char *map_name, 59 __u32 key_size, 60 __u32 value_size, 61 __u32 max_entries, 62 const struct bpf_map_create_opts *opts); 63 64 struct bpf_prog_load_opts { 65 size_t sz; /* size of this struct for forward/backward compatibility */ 66 67 /* libbpf can retry BPF_PROG_LOAD command if bpf() syscall returns 68 * -EAGAIN. This field determines how many attempts libbpf has to 69 * make. If not specified, libbpf will use default value of 5. 70 */ 71 int attempts; 72 73 enum bpf_attach_type expected_attach_type; 74 __u32 prog_btf_fd; 75 __u32 prog_flags; 76 __u32 prog_ifindex; 77 __u32 kern_version; 78 79 __u32 attach_btf_id; 80 __u32 attach_prog_fd; 81 __u32 attach_btf_obj_fd; 82 83 const int *fd_array; 84 85 /* .BTF.ext func info data */ 86 const void *func_info; 87 __u32 func_info_cnt; 88 __u32 func_info_rec_size; 89 90 /* .BTF.ext line info data */ 91 const void *line_info; 92 __u32 line_info_cnt; 93 __u32 line_info_rec_size; 94 95 /* verifier log options */ 96 __u32 log_level; 97 __u32 log_size; 98 char *log_buf; 99 /* output: actual total log contents size (including termintaing zero). 100 * It could be both larger than original log_size (if log was 101 * truncated), or smaller (if log buffer wasn't filled completely). 102 * If kernel doesn't support this feature, log_size is left unchanged. 103 */ 104 __u32 log_true_size; 105 size_t :0; 106 }; 107 #define bpf_prog_load_opts__last_field log_true_size 108 109 LIBBPF_API int bpf_prog_load(enum bpf_prog_type prog_type, 110 const char *prog_name, const char *license, 111 const struct bpf_insn *insns, size_t insn_cnt, 112 struct bpf_prog_load_opts *opts); 113 114 /* Flags to direct loading requirements */ 115 #define MAPS_RELAX_COMPAT 0x01 116 117 /* Recommended log buffer size */ 118 #define BPF_LOG_BUF_SIZE (UINT32_MAX >> 8) /* verifier maximum in kernels <= 5.1 */ 119 120 struct bpf_btf_load_opts { 121 size_t sz; /* size of this struct for forward/backward compatibility */ 122 123 /* kernel log options */ 124 char *log_buf; 125 __u32 log_level; 126 __u32 log_size; 127 /* output: actual total log contents size (including termintaing zero). 128 * It could be both larger than original log_size (if log was 129 * truncated), or smaller (if log buffer wasn't filled completely). 130 * If kernel doesn't support this feature, log_size is left unchanged. 131 */ 132 __u32 log_true_size; 133 size_t :0; 134 }; 135 #define bpf_btf_load_opts__last_field log_true_size 136 137 LIBBPF_API int bpf_btf_load(const void *btf_data, size_t btf_size, 138 struct bpf_btf_load_opts *opts); 139 140 LIBBPF_API int bpf_map_update_elem(int fd, const void *key, const void *value, 141 __u64 flags); 142 143 LIBBPF_API int bpf_map_lookup_elem(int fd, const void *key, void *value); 144 LIBBPF_API int bpf_map_lookup_elem_flags(int fd, const void *key, void *value, 145 __u64 flags); 146 LIBBPF_API int bpf_map_lookup_and_delete_elem(int fd, const void *key, 147 void *value); 148 LIBBPF_API int bpf_map_lookup_and_delete_elem_flags(int fd, const void *key, 149 void *value, __u64 flags); 150 LIBBPF_API int bpf_map_delete_elem(int fd, const void *key); 151 LIBBPF_API int bpf_map_delete_elem_flags(int fd, const void *key, __u64 flags); 152 LIBBPF_API int bpf_map_get_next_key(int fd, const void *key, void *next_key); 153 LIBBPF_API int bpf_map_freeze(int fd); 154 155 struct bpf_map_batch_opts { 156 size_t sz; /* size of this struct for forward/backward compatibility */ 157 __u64 elem_flags; 158 __u64 flags; 159 }; 160 #define bpf_map_batch_opts__last_field flags 161 162 163 /** 164 * @brief **bpf_map_delete_batch()** allows for batch deletion of multiple 165 * elements in a BPF map. 166 * 167 * @param fd BPF map file descriptor 168 * @param keys pointer to an array of *count* keys 169 * @param count input and output parameter; on input **count** represents the 170 * number of elements in the map to delete in batch; 171 * on output if a non-EFAULT error is returned, **count** represents the number of deleted 172 * elements if the output **count** value is not equal to the input **count** value 173 * If EFAULT is returned, **count** should not be trusted to be correct. 174 * @param opts options for configuring the way the batch deletion works 175 * @return 0, on success; negative error code, otherwise (errno is also set to 176 * the error code) 177 */ 178 LIBBPF_API int bpf_map_delete_batch(int fd, const void *keys, 179 __u32 *count, 180 const struct bpf_map_batch_opts *opts); 181 182 /** 183 * @brief **bpf_map_lookup_batch()** allows for batch lookup of BPF map elements. 184 * 185 * The parameter *in_batch* is the address of the first element in the batch to read. 186 * *out_batch* is an output parameter that should be passed as *in_batch* to subsequent 187 * calls to **bpf_map_lookup_batch()**. NULL can be passed for *in_batch* to indicate 188 * that the batched lookup starts from the beginning of the map. 189 * 190 * The *keys* and *values* are output parameters which must point to memory large enough to 191 * hold *count* items based on the key and value size of the map *map_fd*. The *keys* 192 * buffer must be of *key_size* * *count*. The *values* buffer must be of 193 * *value_size* * *count*. 194 * 195 * @param fd BPF map file descriptor 196 * @param in_batch address of the first element in batch to read, can pass NULL to 197 * indicate that the batched lookup starts from the beginning of the map. 198 * @param out_batch output parameter that should be passed to next call as *in_batch* 199 * @param keys pointer to an array large enough for *count* keys 200 * @param values pointer to an array large enough for *count* values 201 * @param count input and output parameter; on input it's the number of elements 202 * in the map to read in batch; on output it's the number of elements that were 203 * successfully read. 204 * If a non-EFAULT error is returned, count will be set as the number of elements 205 * that were read before the error occurred. 206 * If EFAULT is returned, **count** should not be trusted to be correct. 207 * @param opts options for configuring the way the batch lookup works 208 * @return 0, on success; negative error code, otherwise (errno is also set to 209 * the error code) 210 */ 211 LIBBPF_API int bpf_map_lookup_batch(int fd, void *in_batch, void *out_batch, 212 void *keys, void *values, __u32 *count, 213 const struct bpf_map_batch_opts *opts); 214 215 /** 216 * @brief **bpf_map_lookup_and_delete_batch()** allows for batch lookup and deletion 217 * of BPF map elements where each element is deleted after being retrieved. 218 * 219 * @param fd BPF map file descriptor 220 * @param in_batch address of the first element in batch to read, can pass NULL to 221 * get address of the first element in *out_batch* 222 * @param out_batch output parameter that should be passed to next call as *in_batch* 223 * @param keys pointer to an array of *count* keys 224 * @param values pointer to an array large enough for *count* values 225 * @param count input and output parameter; on input it's the number of elements 226 * in the map to read and delete in batch; on output it represents the number of 227 * elements that were successfully read and deleted 228 * If a non-**EFAULT** error code is returned and if the output **count** value 229 * is not equal to the input **count** value, up to **count** elements may 230 * have been deleted. 231 * if **EFAULT** is returned up to *count* elements may have been deleted without 232 * being returned via the *keys* and *values* output parameters. 233 * @param opts options for configuring the way the batch lookup and delete works 234 * @return 0, on success; negative error code, otherwise (errno is also set to 235 * the error code) 236 */ 237 LIBBPF_API int bpf_map_lookup_and_delete_batch(int fd, void *in_batch, 238 void *out_batch, void *keys, 239 void *values, __u32 *count, 240 const struct bpf_map_batch_opts *opts); 241 242 /** 243 * @brief **bpf_map_update_batch()** updates multiple elements in a map 244 * by specifying keys and their corresponding values. 245 * 246 * The *keys* and *values* parameters must point to memory large enough 247 * to hold *count* items based on the key and value size of the map. 248 * 249 * The *opts* parameter can be used to control how *bpf_map_update_batch()* 250 * should handle keys that either do or do not already exist in the map. 251 * In particular the *flags* parameter of *bpf_map_batch_opts* can be 252 * one of the following: 253 * 254 * Note that *count* is an input and output parameter, where on output it 255 * represents how many elements were successfully updated. Also note that if 256 * **EFAULT** then *count* should not be trusted to be correct. 257 * 258 * **BPF_ANY** 259 * Create new elements or update existing. 260 * 261 * **BPF_NOEXIST** 262 * Create new elements only if they do not exist. 263 * 264 * **BPF_EXIST** 265 * Update existing elements. 266 * 267 * **BPF_F_LOCK** 268 * Update spin_lock-ed map elements. This must be 269 * specified if the map value contains a spinlock. 270 * 271 * @param fd BPF map file descriptor 272 * @param keys pointer to an array of *count* keys 273 * @param values pointer to an array of *count* values 274 * @param count input and output parameter; on input it's the number of elements 275 * in the map to update in batch; on output if a non-EFAULT error is returned, 276 * **count** represents the number of updated elements if the output **count** 277 * value is not equal to the input **count** value. 278 * If EFAULT is returned, **count** should not be trusted to be correct. 279 * @param opts options for configuring the way the batch update works 280 * @return 0, on success; negative error code, otherwise (errno is also set to 281 * the error code) 282 */ 283 LIBBPF_API int bpf_map_update_batch(int fd, const void *keys, const void *values, 284 __u32 *count, 285 const struct bpf_map_batch_opts *opts); 286 287 struct bpf_obj_pin_opts { 288 size_t sz; /* size of this struct for forward/backward compatibility */ 289 290 __u32 file_flags; 291 int path_fd; 292 293 size_t :0; 294 }; 295 #define bpf_obj_pin_opts__last_field path_fd 296 297 LIBBPF_API int bpf_obj_pin(int fd, const char *pathname); 298 LIBBPF_API int bpf_obj_pin_opts(int fd, const char *pathname, 299 const struct bpf_obj_pin_opts *opts); 300 301 struct bpf_obj_get_opts { 302 size_t sz; /* size of this struct for forward/backward compatibility */ 303 304 __u32 file_flags; 305 int path_fd; 306 307 size_t :0; 308 }; 309 #define bpf_obj_get_opts__last_field path_fd 310 311 LIBBPF_API int bpf_obj_get(const char *pathname); 312 LIBBPF_API int bpf_obj_get_opts(const char *pathname, 313 const struct bpf_obj_get_opts *opts); 314 315 LIBBPF_API int bpf_prog_attach(int prog_fd, int attachable_fd, 316 enum bpf_attach_type type, unsigned int flags); 317 LIBBPF_API int bpf_prog_detach(int attachable_fd, enum bpf_attach_type type); 318 LIBBPF_API int bpf_prog_detach2(int prog_fd, int attachable_fd, 319 enum bpf_attach_type type); 320 321 struct bpf_prog_attach_opts { 322 size_t sz; /* size of this struct for forward/backward compatibility */ 323 __u32 flags; 324 union { 325 int replace_prog_fd; 326 int replace_fd; 327 }; 328 int relative_fd; 329 __u32 relative_id; 330 __u64 expected_revision; 331 size_t :0; 332 }; 333 #define bpf_prog_attach_opts__last_field expected_revision 334 335 struct bpf_prog_detach_opts { 336 size_t sz; /* size of this struct for forward/backward compatibility */ 337 __u32 flags; 338 int relative_fd; 339 __u32 relative_id; 340 __u64 expected_revision; 341 size_t :0; 342 }; 343 #define bpf_prog_detach_opts__last_field expected_revision 344 345 /** 346 * @brief **bpf_prog_attach_opts()** attaches the BPF program corresponding to 347 * *prog_fd* to a *target* which can represent a file descriptor or netdevice 348 * ifindex. 349 * 350 * @param prog_fd BPF program file descriptor 351 * @param target attach location file descriptor or ifindex 352 * @param type attach type for the BPF program 353 * @param opts options for configuring the attachment 354 * @return 0, on success; negative error code, otherwise (errno is also set to 355 * the error code) 356 */ 357 LIBBPF_API int bpf_prog_attach_opts(int prog_fd, int target, 358 enum bpf_attach_type type, 359 const struct bpf_prog_attach_opts *opts); 360 361 /** 362 * @brief **bpf_prog_detach_opts()** detaches the BPF program corresponding to 363 * *prog_fd* from a *target* which can represent a file descriptor or netdevice 364 * ifindex. 365 * 366 * @param prog_fd BPF program file descriptor 367 * @param target detach location file descriptor or ifindex 368 * @param type detach type for the BPF program 369 * @param opts options for configuring the detachment 370 * @return 0, on success; negative error code, otherwise (errno is also set to 371 * the error code) 372 */ 373 LIBBPF_API int bpf_prog_detach_opts(int prog_fd, int target, 374 enum bpf_attach_type type, 375 const struct bpf_prog_detach_opts *opts); 376 377 union bpf_iter_link_info; /* defined in up-to-date linux/bpf.h */ 378 struct bpf_link_create_opts { 379 size_t sz; /* size of this struct for forward/backward compatibility */ 380 __u32 flags; 381 union bpf_iter_link_info *iter_info; 382 __u32 iter_info_len; 383 __u32 target_btf_id; 384 union { 385 struct { 386 __u64 bpf_cookie; 387 } perf_event; 388 struct { 389 __u32 flags; 390 __u32 cnt; 391 const char **syms; 392 const unsigned long *addrs; 393 const __u64 *cookies; 394 } kprobe_multi; 395 struct { 396 __u32 flags; 397 __u32 cnt; 398 const char *path; 399 const unsigned long *offsets; 400 const unsigned long *ref_ctr_offsets; 401 const __u64 *cookies; 402 __u32 pid; 403 } uprobe_multi; 404 struct { 405 __u64 cookie; 406 } tracing; 407 struct { 408 __u32 pf; 409 __u32 hooknum; 410 __s32 priority; 411 __u32 flags; 412 } netfilter; 413 struct { 414 __u32 relative_fd; 415 __u32 relative_id; 416 __u64 expected_revision; 417 } tcx; 418 }; 419 size_t :0; 420 }; 421 #define bpf_link_create_opts__last_field uprobe_multi.pid 422 423 LIBBPF_API int bpf_link_create(int prog_fd, int target_fd, 424 enum bpf_attach_type attach_type, 425 const struct bpf_link_create_opts *opts); 426 427 LIBBPF_API int bpf_link_detach(int link_fd); 428 429 struct bpf_link_update_opts { 430 size_t sz; /* size of this struct for forward/backward compatibility */ 431 __u32 flags; /* extra flags */ 432 __u32 old_prog_fd; /* expected old program FD */ 433 __u32 old_map_fd; /* expected old map FD */ 434 }; 435 #define bpf_link_update_opts__last_field old_map_fd 436 437 LIBBPF_API int bpf_link_update(int link_fd, int new_prog_fd, 438 const struct bpf_link_update_opts *opts); 439 440 LIBBPF_API int bpf_iter_create(int link_fd); 441 442 struct bpf_prog_test_run_attr { 443 int prog_fd; 444 int repeat; 445 const void *data_in; 446 __u32 data_size_in; 447 void *data_out; /* optional */ 448 __u32 data_size_out; /* in: max length of data_out 449 * out: length of data_out */ 450 __u32 retval; /* out: return code of the BPF program */ 451 __u32 duration; /* out: average per repetition in ns */ 452 const void *ctx_in; /* optional */ 453 __u32 ctx_size_in; 454 void *ctx_out; /* optional */ 455 __u32 ctx_size_out; /* in: max length of ctx_out 456 * out: length of cxt_out */ 457 }; 458 459 LIBBPF_API int bpf_prog_get_next_id(__u32 start_id, __u32 *next_id); 460 LIBBPF_API int bpf_map_get_next_id(__u32 start_id, __u32 *next_id); 461 LIBBPF_API int bpf_btf_get_next_id(__u32 start_id, __u32 *next_id); 462 LIBBPF_API int bpf_link_get_next_id(__u32 start_id, __u32 *next_id); 463 464 struct bpf_get_fd_by_id_opts { 465 size_t sz; /* size of this struct for forward/backward compatibility */ 466 __u32 open_flags; /* permissions requested for the operation on fd */ 467 size_t :0; 468 }; 469 #define bpf_get_fd_by_id_opts__last_field open_flags 470 471 LIBBPF_API int bpf_prog_get_fd_by_id(__u32 id); 472 LIBBPF_API int bpf_prog_get_fd_by_id_opts(__u32 id, 473 const struct bpf_get_fd_by_id_opts *opts); 474 LIBBPF_API int bpf_map_get_fd_by_id(__u32 id); 475 LIBBPF_API int bpf_map_get_fd_by_id_opts(__u32 id, 476 const struct bpf_get_fd_by_id_opts *opts); 477 LIBBPF_API int bpf_btf_get_fd_by_id(__u32 id); 478 LIBBPF_API int bpf_btf_get_fd_by_id_opts(__u32 id, 479 const struct bpf_get_fd_by_id_opts *opts); 480 LIBBPF_API int bpf_link_get_fd_by_id(__u32 id); 481 LIBBPF_API int bpf_link_get_fd_by_id_opts(__u32 id, 482 const struct bpf_get_fd_by_id_opts *opts); 483 LIBBPF_API int bpf_obj_get_info_by_fd(int bpf_fd, void *info, __u32 *info_len); 484 485 /** 486 * @brief **bpf_prog_get_info_by_fd()** obtains information about the BPF 487 * program corresponding to *prog_fd*. 488 * 489 * Populates up to *info_len* bytes of *info* and updates *info_len* with the 490 * actual number of bytes written to *info*. 491 * 492 * @param prog_fd BPF program file descriptor 493 * @param info pointer to **struct bpf_prog_info** that will be populated with 494 * BPF program information 495 * @param info_len pointer to the size of *info*; on success updated with the 496 * number of bytes written to *info* 497 * @return 0, on success; negative error code, otherwise (errno is also set to 498 * the error code) 499 */ 500 LIBBPF_API int bpf_prog_get_info_by_fd(int prog_fd, struct bpf_prog_info *info, __u32 *info_len); 501 502 /** 503 * @brief **bpf_map_get_info_by_fd()** obtains information about the BPF 504 * map corresponding to *map_fd*. 505 * 506 * Populates up to *info_len* bytes of *info* and updates *info_len* with the 507 * actual number of bytes written to *info*. 508 * 509 * @param map_fd BPF map file descriptor 510 * @param info pointer to **struct bpf_map_info** that will be populated with 511 * BPF map information 512 * @param info_len pointer to the size of *info*; on success updated with the 513 * number of bytes written to *info* 514 * @return 0, on success; negative error code, otherwise (errno is also set to 515 * the error code) 516 */ 517 LIBBPF_API int bpf_map_get_info_by_fd(int map_fd, struct bpf_map_info *info, __u32 *info_len); 518 519 /** 520 * @brief **bpf_btf_get_info_by_fd()** obtains information about the 521 * BTF object corresponding to *btf_fd*. 522 * 523 * Populates up to *info_len* bytes of *info* and updates *info_len* with the 524 * actual number of bytes written to *info*. 525 * 526 * @param btf_fd BTF object file descriptor 527 * @param info pointer to **struct bpf_btf_info** that will be populated with 528 * BTF object information 529 * @param info_len pointer to the size of *info*; on success updated with the 530 * number of bytes written to *info* 531 * @return 0, on success; negative error code, otherwise (errno is also set to 532 * the error code) 533 */ 534 LIBBPF_API int bpf_btf_get_info_by_fd(int btf_fd, struct bpf_btf_info *info, __u32 *info_len); 535 536 /** 537 * @brief **bpf_btf_get_info_by_fd()** obtains information about the BPF 538 * link corresponding to *link_fd*. 539 * 540 * Populates up to *info_len* bytes of *info* and updates *info_len* with the 541 * actual number of bytes written to *info*. 542 * 543 * @param link_fd BPF link file descriptor 544 * @param info pointer to **struct bpf_link_info** that will be populated with 545 * BPF link information 546 * @param info_len pointer to the size of *info*; on success updated with the 547 * number of bytes written to *info* 548 * @return 0, on success; negative error code, otherwise (errno is also set to 549 * the error code) 550 */ 551 LIBBPF_API int bpf_link_get_info_by_fd(int link_fd, struct bpf_link_info *info, __u32 *info_len); 552 553 struct bpf_prog_query_opts { 554 size_t sz; /* size of this struct for forward/backward compatibility */ 555 __u32 query_flags; 556 __u32 attach_flags; /* output argument */ 557 __u32 *prog_ids; 558 union { 559 /* input+output argument */ 560 __u32 prog_cnt; 561 __u32 count; 562 }; 563 __u32 *prog_attach_flags; 564 __u32 *link_ids; 565 __u32 *link_attach_flags; 566 __u64 revision; 567 size_t :0; 568 }; 569 #define bpf_prog_query_opts__last_field revision 570 571 /** 572 * @brief **bpf_prog_query_opts()** queries the BPF programs and BPF links 573 * which are attached to *target* which can represent a file descriptor or 574 * netdevice ifindex. 575 * 576 * @param target query location file descriptor or ifindex 577 * @param type attach type for the BPF program 578 * @param opts options for configuring the query 579 * @return 0, on success; negative error code, otherwise (errno is also set to 580 * the error code) 581 */ 582 LIBBPF_API int bpf_prog_query_opts(int target, enum bpf_attach_type type, 583 struct bpf_prog_query_opts *opts); 584 LIBBPF_API int bpf_prog_query(int target_fd, enum bpf_attach_type type, 585 __u32 query_flags, __u32 *attach_flags, 586 __u32 *prog_ids, __u32 *prog_cnt); 587 588 LIBBPF_API int bpf_raw_tracepoint_open(const char *name, int prog_fd); 589 LIBBPF_API int bpf_task_fd_query(int pid, int fd, __u32 flags, char *buf, 590 __u32 *buf_len, __u32 *prog_id, __u32 *fd_type, 591 __u64 *probe_offset, __u64 *probe_addr); 592 593 #ifdef __cplusplus 594 /* forward-declaring enums in C++ isn't compatible with pure C enums, so 595 * instead define bpf_enable_stats() as accepting int as an input 596 */ 597 LIBBPF_API int bpf_enable_stats(int type); 598 #else 599 enum bpf_stats_type; /* defined in up-to-date linux/bpf.h */ 600 LIBBPF_API int bpf_enable_stats(enum bpf_stats_type type); 601 #endif 602 603 struct bpf_prog_bind_opts { 604 size_t sz; /* size of this struct for forward/backward compatibility */ 605 __u32 flags; 606 }; 607 #define bpf_prog_bind_opts__last_field flags 608 609 LIBBPF_API int bpf_prog_bind_map(int prog_fd, int map_fd, 610 const struct bpf_prog_bind_opts *opts); 611 612 struct bpf_test_run_opts { 613 size_t sz; /* size of this struct for forward/backward compatibility */ 614 const void *data_in; /* optional */ 615 void *data_out; /* optional */ 616 __u32 data_size_in; 617 __u32 data_size_out; /* in: max length of data_out 618 * out: length of data_out 619 */ 620 const void *ctx_in; /* optional */ 621 void *ctx_out; /* optional */ 622 __u32 ctx_size_in; 623 __u32 ctx_size_out; /* in: max length of ctx_out 624 * out: length of cxt_out 625 */ 626 __u32 retval; /* out: return code of the BPF program */ 627 int repeat; 628 __u32 duration; /* out: average per repetition in ns */ 629 __u32 flags; 630 __u32 cpu; 631 __u32 batch_size; 632 }; 633 #define bpf_test_run_opts__last_field batch_size 634 635 LIBBPF_API int bpf_prog_test_run_opts(int prog_fd, 636 struct bpf_test_run_opts *opts); 637 638 #ifdef __cplusplus 639 } /* extern "C" */ 640 #endif 641 642 #endif /* __LIBBPF_BPF_H */ 643