1
2
3
4#ifndef _LINUX_BPF_H
5#define _LINUX_BPF_H 1
6
7#include <uapi/linux/bpf.h>
8
9#include <linux/workqueue.h>
10#include <linux/file.h>
11#include <linux/percpu.h>
12#include <linux/err.h>
13#include <linux/rbtree_latch.h>
14#include <linux/numa.h>
15#include <linux/wait.h>
16#include <linux/u64_stats_sync.h>
17
18struct bpf_verifier_env;
19struct perf_event;
20struct bpf_prog;
21struct bpf_map;
22struct sock;
23struct seq_file;
24struct btf;
25struct btf_type;
26
27
28struct bpf_map_ops {
29
30 int (*map_alloc_check)(union bpf_attr *attr);
31 struct bpf_map *(*map_alloc)(union bpf_attr *attr);
32 void (*map_release)(struct bpf_map *map, struct file *map_file);
33 void (*map_free)(struct bpf_map *map);
34 int (*map_get_next_key)(struct bpf_map *map, void *key, void *next_key);
35 void (*map_release_uref)(struct bpf_map *map);
36 void *(*map_lookup_elem_sys_only)(struct bpf_map *map, void *key);
37
38
39 void *(*map_lookup_elem)(struct bpf_map *map, void *key);
40 int (*map_update_elem)(struct bpf_map *map, void *key, void *value, u64 flags);
41 int (*map_delete_elem)(struct bpf_map *map, void *key);
42 int (*map_push_elem)(struct bpf_map *map, void *value, u64 flags);
43 int (*map_pop_elem)(struct bpf_map *map, void *value);
44 int (*map_peek_elem)(struct bpf_map *map, void *value);
45
46
47 void *(*map_fd_get_ptr)(struct bpf_map *map, struct file *map_file,
48 int fd);
49 void (*map_fd_put_ptr)(void *ptr);
50 u32 (*map_gen_lookup)(struct bpf_map *map, struct bpf_insn *insn_buf);
51 u32 (*map_fd_sys_lookup_elem)(void *ptr);
52 void (*map_seq_show_elem)(struct bpf_map *map, void *key,
53 struct seq_file *m);
54 int (*map_check_btf)(const struct bpf_map *map,
55 const struct btf *btf,
56 const struct btf_type *key_type,
57 const struct btf_type *value_type);
58
59
60 int (*map_direct_value_addr)(const struct bpf_map *map,
61 u64 *imm, u32 off);
62 int (*map_direct_value_meta)(const struct bpf_map *map,
63 u64 imm, u32 *off);
64};
65
66struct bpf_map {
67
68
69
70 const struct bpf_map_ops *ops ____cacheline_aligned;
71 struct bpf_map *inner_map_meta;
72#ifdef CONFIG_SECURITY
73 void *security;
74#endif
75 enum bpf_map_type map_type;
76 u32 key_size;
77 u32 value_size;
78 u32 max_entries;
79 u32 map_flags;
80 int spin_lock_off;
81 u32 id;
82 int numa_node;
83 u32 btf_key_type_id;
84 u32 btf_value_type_id;
85 struct btf *btf;
86 u32 pages;
87 bool unpriv_array;
88 bool frozen;
89
90
91
92
93
94 struct user_struct *user ____cacheline_aligned;
95 atomic_t refcnt;
96 atomic_t usercnt;
97 struct work_struct work;
98 char name[BPF_OBJ_NAME_LEN];
99};
100
101static inline bool map_value_has_spin_lock(const struct bpf_map *map)
102{
103 return map->spin_lock_off >= 0;
104}
105
106static inline void check_and_init_map_lock(struct bpf_map *map, void *dst)
107{
108 if (likely(!map_value_has_spin_lock(map)))
109 return;
110 *(struct bpf_spin_lock *)(dst + map->spin_lock_off) =
111 (struct bpf_spin_lock){};
112}
113
114
115static inline void copy_map_value(struct bpf_map *map, void *dst, void *src)
116{
117 if (unlikely(map_value_has_spin_lock(map))) {
118 u32 off = map->spin_lock_off;
119
120 memcpy(dst, src, off);
121 memcpy(dst + off + sizeof(struct bpf_spin_lock),
122 src + off + sizeof(struct bpf_spin_lock),
123 map->value_size - off - sizeof(struct bpf_spin_lock));
124 } else {
125 memcpy(dst, src, map->value_size);
126 }
127}
128void copy_map_value_locked(struct bpf_map *map, void *dst, void *src,
129 bool lock_src);
130
131struct bpf_offload_dev;
132struct bpf_offloaded_map;
133
134struct bpf_map_dev_ops {
135 int (*map_get_next_key)(struct bpf_offloaded_map *map,
136 void *key, void *next_key);
137 int (*map_lookup_elem)(struct bpf_offloaded_map *map,
138 void *key, void *value);
139 int (*map_update_elem)(struct bpf_offloaded_map *map,
140 void *key, void *value, u64 flags);
141 int (*map_delete_elem)(struct bpf_offloaded_map *map, void *key);
142};
143
144struct bpf_offloaded_map {
145 struct bpf_map map;
146 struct net_device *netdev;
147 const struct bpf_map_dev_ops *dev_ops;
148 void *dev_priv;
149 struct list_head offloads;
150};
151
152static inline struct bpf_offloaded_map *map_to_offmap(struct bpf_map *map)
153{
154 return container_of(map, struct bpf_offloaded_map, map);
155}
156
157static inline bool bpf_map_offload_neutral(const struct bpf_map *map)
158{
159 return map->map_type == BPF_MAP_TYPE_PERF_EVENT_ARRAY;
160}
161
162static inline bool bpf_map_support_seq_show(const struct bpf_map *map)
163{
164 return map->btf && map->ops->map_seq_show_elem;
165}
166
167int map_check_no_btf(const struct bpf_map *map,
168 const struct btf *btf,
169 const struct btf_type *key_type,
170 const struct btf_type *value_type);
171
172extern const struct bpf_map_ops bpf_map_offload_ops;
173
174
175enum bpf_arg_type {
176 ARG_DONTCARE = 0,
177
178
179
180
181 ARG_CONST_MAP_PTR,
182 ARG_PTR_TO_MAP_KEY,
183 ARG_PTR_TO_MAP_VALUE,
184 ARG_PTR_TO_UNINIT_MAP_VALUE,
185 ARG_PTR_TO_MAP_VALUE_OR_NULL,
186
187
188
189
190 ARG_PTR_TO_MEM,
191 ARG_PTR_TO_MEM_OR_NULL,
192 ARG_PTR_TO_UNINIT_MEM,
193
194
195
196
197 ARG_CONST_SIZE,
198 ARG_CONST_SIZE_OR_ZERO,
199
200 ARG_PTR_TO_CTX,
201 ARG_ANYTHING,
202 ARG_PTR_TO_SPIN_LOCK,
203 ARG_PTR_TO_SOCK_COMMON,
204 ARG_PTR_TO_INT,
205 ARG_PTR_TO_LONG,
206 ARG_PTR_TO_SOCKET,
207};
208
209
210enum bpf_return_type {
211 RET_INTEGER,
212 RET_VOID,
213 RET_PTR_TO_MAP_VALUE,
214 RET_PTR_TO_MAP_VALUE_OR_NULL,
215 RET_PTR_TO_SOCKET_OR_NULL,
216 RET_PTR_TO_TCP_SOCK_OR_NULL,
217 RET_PTR_TO_SOCK_COMMON_OR_NULL,
218};
219
220
221
222
223
224struct bpf_func_proto {
225 u64 (*func)(u64 r1, u64 r2, u64 r3, u64 r4, u64 r5);
226 bool gpl_only;
227 bool pkt_access;
228 enum bpf_return_type ret_type;
229 enum bpf_arg_type arg1_type;
230 enum bpf_arg_type arg2_type;
231 enum bpf_arg_type arg3_type;
232 enum bpf_arg_type arg4_type;
233 enum bpf_arg_type arg5_type;
234};
235
236
237
238
239
240struct bpf_context;
241
242enum bpf_access_type {
243 BPF_READ = 1,
244 BPF_WRITE = 2
245};
246
247
248
249
250
251
252
253
254
255
256
257enum bpf_reg_type {
258 NOT_INIT = 0,
259 SCALAR_VALUE,
260 PTR_TO_CTX,
261 CONST_PTR_TO_MAP,
262 PTR_TO_MAP_VALUE,
263 PTR_TO_MAP_VALUE_OR_NULL,
264 PTR_TO_STACK,
265 PTR_TO_PACKET_META,
266 PTR_TO_PACKET,
267 PTR_TO_PACKET_END,
268 PTR_TO_FLOW_KEYS,
269 PTR_TO_SOCKET,
270 PTR_TO_SOCKET_OR_NULL,
271 PTR_TO_SOCK_COMMON,
272 PTR_TO_SOCK_COMMON_OR_NULL,
273 PTR_TO_TCP_SOCK,
274 PTR_TO_TCP_SOCK_OR_NULL,
275 PTR_TO_TP_BUFFER,
276};
277
278
279
280
281struct bpf_insn_access_aux {
282 enum bpf_reg_type reg_type;
283 int ctx_field_size;
284};
285
286static inline void
287bpf_ctx_record_field_size(struct bpf_insn_access_aux *aux, u32 size)
288{
289 aux->ctx_field_size = size;
290}
291
292struct bpf_prog_ops {
293 int (*test_run)(struct bpf_prog *prog, const union bpf_attr *kattr,
294 union bpf_attr __user *uattr);
295};
296
297struct bpf_verifier_ops {
298
299 const struct bpf_func_proto *
300 (*get_func_proto)(enum bpf_func_id func_id,
301 const struct bpf_prog *prog);
302
303
304
305
306 bool (*is_valid_access)(int off, int size, enum bpf_access_type type,
307 const struct bpf_prog *prog,
308 struct bpf_insn_access_aux *info);
309 int (*gen_prologue)(struct bpf_insn *insn, bool direct_write,
310 const struct bpf_prog *prog);
311 int (*gen_ld_abs)(const struct bpf_insn *orig,
312 struct bpf_insn *insn_buf);
313 u32 (*convert_ctx_access)(enum bpf_access_type type,
314 const struct bpf_insn *src,
315 struct bpf_insn *dst,
316 struct bpf_prog *prog, u32 *target_size);
317};
318
319struct bpf_prog_offload_ops {
320
321 int (*insn_hook)(struct bpf_verifier_env *env,
322 int insn_idx, int prev_insn_idx);
323 int (*finalize)(struct bpf_verifier_env *env);
324
325 int (*replace_insn)(struct bpf_verifier_env *env, u32 off,
326 struct bpf_insn *insn);
327 int (*remove_insns)(struct bpf_verifier_env *env, u32 off, u32 cnt);
328
329 int (*prepare)(struct bpf_prog *prog);
330 int (*translate)(struct bpf_prog *prog);
331 void (*destroy)(struct bpf_prog *prog);
332};
333
334struct bpf_prog_offload {
335 struct bpf_prog *prog;
336 struct net_device *netdev;
337 struct bpf_offload_dev *offdev;
338 void *dev_priv;
339 struct list_head offloads;
340 bool dev_state;
341 bool opt_failed;
342 void *jited_image;
343 u32 jited_len;
344};
345
346enum bpf_cgroup_storage_type {
347 BPF_CGROUP_STORAGE_SHARED,
348 BPF_CGROUP_STORAGE_PERCPU,
349 __BPF_CGROUP_STORAGE_MAX
350};
351
352#define MAX_BPF_CGROUP_STORAGE_TYPE __BPF_CGROUP_STORAGE_MAX
353
354struct bpf_prog_stats {
355 u64 cnt;
356 u64 nsecs;
357 struct u64_stats_sync syncp;
358};
359
360struct bpf_prog_aux {
361 atomic_t refcnt;
362 u32 used_map_cnt;
363 u32 max_ctx_offset;
364 u32 max_pkt_offset;
365 u32 max_tp_access;
366 u32 stack_depth;
367 u32 id;
368 u32 func_cnt;
369 u32 func_idx;
370 bool offload_requested;
371 struct bpf_prog **func;
372 void *jit_data;
373 struct latch_tree_node ksym_tnode;
374 struct list_head ksym_lnode;
375 const struct bpf_prog_ops *ops;
376 struct bpf_map **used_maps;
377 struct bpf_prog *prog;
378 struct user_struct *user;
379 u64 load_time;
380 struct bpf_map *cgroup_storage[MAX_BPF_CGROUP_STORAGE_TYPE];
381 char name[BPF_OBJ_NAME_LEN];
382#ifdef CONFIG_SECURITY
383 void *security;
384#endif
385 struct bpf_prog_offload *offload;
386 struct btf *btf;
387 struct bpf_func_info *func_info;
388
389
390
391
392
393
394 struct bpf_line_info *linfo;
395
396
397
398
399
400
401
402 void **jited_linfo;
403 u32 func_info_cnt;
404 u32 nr_linfo;
405
406
407
408
409 u32 linfo_idx;
410 struct bpf_prog_stats __percpu *stats;
411 union {
412 struct work_struct work;
413 struct rcu_head rcu;
414 };
415};
416
417struct bpf_array {
418 struct bpf_map map;
419 u32 elem_size;
420 u32 index_mask;
421
422
423
424
425
426 enum bpf_prog_type owner_prog_type;
427 bool owner_jited;
428 union {
429 char value[0] __aligned(8);
430 void *ptrs[0] __aligned(8);
431 void __percpu *pptrs[0] __aligned(8);
432 };
433};
434
435#define BPF_COMPLEXITY_LIMIT_INSNS 1000000
436#define MAX_TAIL_CALL_CNT 32
437
438#define BPF_F_ACCESS_MASK (BPF_F_RDONLY | \
439 BPF_F_RDONLY_PROG | \
440 BPF_F_WRONLY | \
441 BPF_F_WRONLY_PROG)
442
443#define BPF_MAP_CAN_READ BIT(0)
444#define BPF_MAP_CAN_WRITE BIT(1)
445
446static inline u32 bpf_map_flags_to_cap(struct bpf_map *map)
447{
448 u32 access_flags = map->map_flags & (BPF_F_RDONLY_PROG | BPF_F_WRONLY_PROG);
449
450
451
452
453 if (access_flags & BPF_F_RDONLY_PROG)
454 return BPF_MAP_CAN_READ;
455 else if (access_flags & BPF_F_WRONLY_PROG)
456 return BPF_MAP_CAN_WRITE;
457 else
458 return BPF_MAP_CAN_READ | BPF_MAP_CAN_WRITE;
459}
460
461static inline bool bpf_map_flags_access_ok(u32 access_flags)
462{
463 return (access_flags & (BPF_F_RDONLY_PROG | BPF_F_WRONLY_PROG)) !=
464 (BPF_F_RDONLY_PROG | BPF_F_WRONLY_PROG);
465}
466
467struct bpf_event_entry {
468 struct perf_event *event;
469 struct file *perf_file;
470 struct file *map_file;
471 struct rcu_head rcu;
472};
473
474bool bpf_prog_array_compatible(struct bpf_array *array, const struct bpf_prog *fp);
475int bpf_prog_calc_tag(struct bpf_prog *fp);
476
477const struct bpf_func_proto *bpf_get_trace_printk_proto(void);
478
479typedef unsigned long (*bpf_ctx_copy_t)(void *dst, const void *src,
480 unsigned long off, unsigned long len);
481typedef u32 (*bpf_convert_ctx_access_t)(enum bpf_access_type type,
482 const struct bpf_insn *src,
483 struct bpf_insn *dst,
484 struct bpf_prog *prog,
485 u32 *target_size);
486
487u64 bpf_event_output(struct bpf_map *map, u64 flags, void *meta, u64 meta_size,
488 void *ctx, u64 ctx_size, bpf_ctx_copy_t ctx_copy);
489
490
491
492
493
494
495
496
497
498
499
500
501
502struct bpf_prog_array_item {
503 struct bpf_prog *prog;
504 struct bpf_cgroup_storage *cgroup_storage[MAX_BPF_CGROUP_STORAGE_TYPE];
505};
506
507struct bpf_prog_array {
508 struct rcu_head rcu;
509 struct bpf_prog_array_item items[0];
510};
511
512struct bpf_prog_array *bpf_prog_array_alloc(u32 prog_cnt, gfp_t flags);
513void bpf_prog_array_free(struct bpf_prog_array __rcu *progs);
514int bpf_prog_array_length(struct bpf_prog_array __rcu *progs);
515int bpf_prog_array_copy_to_user(struct bpf_prog_array __rcu *progs,
516 __u32 __user *prog_ids, u32 cnt);
517
518void bpf_prog_array_delete_safe(struct bpf_prog_array __rcu *progs,
519 struct bpf_prog *old_prog);
520int bpf_prog_array_copy_info(struct bpf_prog_array __rcu *array,
521 u32 *prog_ids, u32 request_cnt,
522 u32 *prog_cnt);
523int bpf_prog_array_copy(struct bpf_prog_array __rcu *old_array,
524 struct bpf_prog *exclude_prog,
525 struct bpf_prog *include_prog,
526 struct bpf_prog_array **new_array);
527
528#define __BPF_PROG_RUN_ARRAY(array, ctx, func, check_non_null) \
529 ({ \
530 struct bpf_prog_array_item *_item; \
531 struct bpf_prog *_prog; \
532 struct bpf_prog_array *_array; \
533 u32 _ret = 1; \
534 preempt_disable(); \
535 rcu_read_lock(); \
536 _array = rcu_dereference(array); \
537 if (unlikely(check_non_null && !_array))\
538 goto _out; \
539 _item = &_array->items[0]; \
540 while ((_prog = READ_ONCE(_item->prog))) { \
541 bpf_cgroup_storage_set(_item->cgroup_storage); \
542 _ret &= func(_prog, ctx); \
543 _item++; \
544 } \
545_out: \
546 rcu_read_unlock(); \
547 preempt_enable(); \
548 _ret; \
549 })
550
551#define BPF_PROG_RUN_ARRAY(array, ctx, func) \
552 __BPF_PROG_RUN_ARRAY(array, ctx, func, false)
553
554#define BPF_PROG_RUN_ARRAY_CHECK(array, ctx, func) \
555 __BPF_PROG_RUN_ARRAY(array, ctx, func, true)
556
557#ifdef CONFIG_BPF_SYSCALL
558DECLARE_PER_CPU(int, bpf_prog_active);
559
560extern const struct file_operations bpf_map_fops;
561extern const struct file_operations bpf_prog_fops;
562
563#define BPF_PROG_TYPE(_id, _name) \
564 extern const struct bpf_prog_ops _name ## _prog_ops; \
565 extern const struct bpf_verifier_ops _name ## _verifier_ops;
566#define BPF_MAP_TYPE(_id, _ops) \
567 extern const struct bpf_map_ops _ops;
568#include <linux/bpf_types.h>
569#undef BPF_PROG_TYPE
570#undef BPF_MAP_TYPE
571
572extern const struct bpf_prog_ops bpf_offload_prog_ops;
573extern const struct bpf_verifier_ops tc_cls_act_analyzer_ops;
574extern const struct bpf_verifier_ops xdp_analyzer_ops;
575
576struct bpf_prog *bpf_prog_get(u32 ufd);
577struct bpf_prog *bpf_prog_get_type_dev(u32 ufd, enum bpf_prog_type type,
578 bool attach_drv);
579struct bpf_prog * __must_check bpf_prog_add(struct bpf_prog *prog, int i);
580void bpf_prog_sub(struct bpf_prog *prog, int i);
581struct bpf_prog * __must_check bpf_prog_inc(struct bpf_prog *prog);
582struct bpf_prog * __must_check bpf_prog_inc_not_zero(struct bpf_prog *prog);
583void bpf_prog_put(struct bpf_prog *prog);
584int __bpf_prog_charge(struct user_struct *user, u32 pages);
585void __bpf_prog_uncharge(struct user_struct *user, u32 pages);
586
587void bpf_prog_free_id(struct bpf_prog *prog, bool do_idr_lock);
588void bpf_map_free_id(struct bpf_map *map, bool do_idr_lock);
589
590struct bpf_map *bpf_map_get_with_uref(u32 ufd);
591struct bpf_map *__bpf_map_get(struct fd f);
592struct bpf_map * __must_check bpf_map_inc(struct bpf_map *map, bool uref);
593void bpf_map_put_with_uref(struct bpf_map *map);
594void bpf_map_put(struct bpf_map *map);
595int bpf_map_precharge_memlock(u32 pages);
596int bpf_map_charge_memlock(struct bpf_map *map, u32 pages);
597void bpf_map_uncharge_memlock(struct bpf_map *map, u32 pages);
598void *bpf_map_area_alloc(size_t size, int numa_node);
599void bpf_map_area_free(void *base);
600void bpf_map_init_from_attr(struct bpf_map *map, union bpf_attr *attr);
601
602extern int sysctl_unprivileged_bpf_disabled;
603
604int bpf_map_new_fd(struct bpf_map *map, int flags);
605int bpf_prog_new_fd(struct bpf_prog *prog);
606
607int bpf_obj_pin_user(u32 ufd, const char __user *pathname);
608int bpf_obj_get_user(const char __user *pathname, int flags);
609
610int bpf_percpu_hash_copy(struct bpf_map *map, void *key, void *value);
611int bpf_percpu_array_copy(struct bpf_map *map, void *key, void *value);
612int bpf_percpu_hash_update(struct bpf_map *map, void *key, void *value,
613 u64 flags);
614int bpf_percpu_array_update(struct bpf_map *map, void *key, void *value,
615 u64 flags);
616
617int bpf_stackmap_copy(struct bpf_map *map, void *key, void *value);
618
619int bpf_fd_array_map_update_elem(struct bpf_map *map, struct file *map_file,
620 void *key, void *value, u64 map_flags);
621int bpf_fd_array_map_lookup_elem(struct bpf_map *map, void *key, u32 *value);
622int bpf_fd_htab_map_update_elem(struct bpf_map *map, struct file *map_file,
623 void *key, void *value, u64 map_flags);
624int bpf_fd_htab_map_lookup_elem(struct bpf_map *map, void *key, u32 *value);
625
626int bpf_get_file_flag(int flags);
627int bpf_check_uarg_tail_zero(void __user *uaddr, size_t expected_size,
628 size_t actual_size);
629
630
631
632
633
634
635
636static inline void bpf_long_memcpy(void *dst, const void *src, u32 size)
637{
638 const long *lsrc = src;
639 long *ldst = dst;
640
641 size /= sizeof(long);
642 while (size--)
643 *ldst++ = *lsrc++;
644}
645
646
647int bpf_check(struct bpf_prog **fp, union bpf_attr *attr,
648 union bpf_attr __user *uattr);
649void bpf_patch_call_args(struct bpf_insn *insn, u32 stack_depth);
650
651
652struct xdp_buff;
653struct sk_buff;
654
655struct bpf_dtab_netdev *__dev_map_lookup_elem(struct bpf_map *map, u32 key);
656void __dev_map_insert_ctx(struct bpf_map *map, u32 index);
657void __dev_map_flush(struct bpf_map *map);
658int dev_map_enqueue(struct bpf_dtab_netdev *dst, struct xdp_buff *xdp,
659 struct net_device *dev_rx);
660int dev_map_generic_redirect(struct bpf_dtab_netdev *dst, struct sk_buff *skb,
661 struct bpf_prog *xdp_prog);
662
663struct bpf_cpu_map_entry *__cpu_map_lookup_elem(struct bpf_map *map, u32 key);
664void __cpu_map_insert_ctx(struct bpf_map *map, u32 index);
665void __cpu_map_flush(struct bpf_map *map);
666int cpu_map_enqueue(struct bpf_cpu_map_entry *rcpu, struct xdp_buff *xdp,
667 struct net_device *dev_rx);
668
669
670static inline int bpf_map_attr_numa_node(const union bpf_attr *attr)
671{
672 return (attr->map_flags & BPF_F_NUMA_NODE) ?
673 attr->numa_node : NUMA_NO_NODE;
674}
675
676struct bpf_prog *bpf_prog_get_type_path(const char *name, enum bpf_prog_type type);
677int array_map_alloc_check(union bpf_attr *attr);
678
679int bpf_prog_test_run_xdp(struct bpf_prog *prog, const union bpf_attr *kattr,
680 union bpf_attr __user *uattr);
681int bpf_prog_test_run_skb(struct bpf_prog *prog, const union bpf_attr *kattr,
682 union bpf_attr __user *uattr);
683int bpf_prog_test_run_flow_dissector(struct bpf_prog *prog,
684 const union bpf_attr *kattr,
685 union bpf_attr __user *uattr);
686#else
687static inline struct bpf_prog *bpf_prog_get(u32 ufd)
688{
689 return ERR_PTR(-EOPNOTSUPP);
690}
691
692static inline struct bpf_prog *bpf_prog_get_type_dev(u32 ufd,
693 enum bpf_prog_type type,
694 bool attach_drv)
695{
696 return ERR_PTR(-EOPNOTSUPP);
697}
698
699static inline struct bpf_prog * __must_check bpf_prog_add(struct bpf_prog *prog,
700 int i)
701{
702 return ERR_PTR(-EOPNOTSUPP);
703}
704
705static inline void bpf_prog_sub(struct bpf_prog *prog, int i)
706{
707}
708
709static inline void bpf_prog_put(struct bpf_prog *prog)
710{
711}
712
713static inline struct bpf_prog * __must_check bpf_prog_inc(struct bpf_prog *prog)
714{
715 return ERR_PTR(-EOPNOTSUPP);
716}
717
718static inline struct bpf_prog *__must_check
719bpf_prog_inc_not_zero(struct bpf_prog *prog)
720{
721 return ERR_PTR(-EOPNOTSUPP);
722}
723
724static inline int __bpf_prog_charge(struct user_struct *user, u32 pages)
725{
726 return 0;
727}
728
729static inline void __bpf_prog_uncharge(struct user_struct *user, u32 pages)
730{
731}
732
733static inline int bpf_obj_get_user(const char __user *pathname, int flags)
734{
735 return -EOPNOTSUPP;
736}
737
738static inline struct net_device *__dev_map_lookup_elem(struct bpf_map *map,
739 u32 key)
740{
741 return NULL;
742}
743
744static inline void __dev_map_insert_ctx(struct bpf_map *map, u32 index)
745{
746}
747
748static inline void __dev_map_flush(struct bpf_map *map)
749{
750}
751
752struct xdp_buff;
753struct bpf_dtab_netdev;
754
755static inline
756int dev_map_enqueue(struct bpf_dtab_netdev *dst, struct xdp_buff *xdp,
757 struct net_device *dev_rx)
758{
759 return 0;
760}
761
762struct sk_buff;
763
764static inline int dev_map_generic_redirect(struct bpf_dtab_netdev *dst,
765 struct sk_buff *skb,
766 struct bpf_prog *xdp_prog)
767{
768 return 0;
769}
770
771static inline
772struct bpf_cpu_map_entry *__cpu_map_lookup_elem(struct bpf_map *map, u32 key)
773{
774 return NULL;
775}
776
777static inline void __cpu_map_insert_ctx(struct bpf_map *map, u32 index)
778{
779}
780
781static inline void __cpu_map_flush(struct bpf_map *map)
782{
783}
784
785static inline int cpu_map_enqueue(struct bpf_cpu_map_entry *rcpu,
786 struct xdp_buff *xdp,
787 struct net_device *dev_rx)
788{
789 return 0;
790}
791
792static inline struct bpf_prog *bpf_prog_get_type_path(const char *name,
793 enum bpf_prog_type type)
794{
795 return ERR_PTR(-EOPNOTSUPP);
796}
797
798static inline int bpf_prog_test_run_xdp(struct bpf_prog *prog,
799 const union bpf_attr *kattr,
800 union bpf_attr __user *uattr)
801{
802 return -ENOTSUPP;
803}
804
805static inline int bpf_prog_test_run_skb(struct bpf_prog *prog,
806 const union bpf_attr *kattr,
807 union bpf_attr __user *uattr)
808{
809 return -ENOTSUPP;
810}
811
812static inline int bpf_prog_test_run_flow_dissector(struct bpf_prog *prog,
813 const union bpf_attr *kattr,
814 union bpf_attr __user *uattr)
815{
816 return -ENOTSUPP;
817}
818#endif
819
820static inline struct bpf_prog *bpf_prog_get_type(u32 ufd,
821 enum bpf_prog_type type)
822{
823 return bpf_prog_get_type_dev(ufd, type, false);
824}
825
826bool bpf_prog_get_ok(struct bpf_prog *, enum bpf_prog_type *, bool);
827
828int bpf_prog_offload_compile(struct bpf_prog *prog);
829void bpf_prog_offload_destroy(struct bpf_prog *prog);
830int bpf_prog_offload_info_fill(struct bpf_prog_info *info,
831 struct bpf_prog *prog);
832
833int bpf_map_offload_info_fill(struct bpf_map_info *info, struct bpf_map *map);
834
835int bpf_map_offload_lookup_elem(struct bpf_map *map, void *key, void *value);
836int bpf_map_offload_update_elem(struct bpf_map *map,
837 void *key, void *value, u64 flags);
838int bpf_map_offload_delete_elem(struct bpf_map *map, void *key);
839int bpf_map_offload_get_next_key(struct bpf_map *map,
840 void *key, void *next_key);
841
842bool bpf_offload_prog_map_match(struct bpf_prog *prog, struct bpf_map *map);
843
844struct bpf_offload_dev *
845bpf_offload_dev_create(const struct bpf_prog_offload_ops *ops, void *priv);
846void bpf_offload_dev_destroy(struct bpf_offload_dev *offdev);
847void *bpf_offload_dev_priv(struct bpf_offload_dev *offdev);
848int bpf_offload_dev_netdev_register(struct bpf_offload_dev *offdev,
849 struct net_device *netdev);
850void bpf_offload_dev_netdev_unregister(struct bpf_offload_dev *offdev,
851 struct net_device *netdev);
852bool bpf_offload_dev_match(struct bpf_prog *prog, struct net_device *netdev);
853
854#if defined(CONFIG_NET) && defined(CONFIG_BPF_SYSCALL)
855int bpf_prog_offload_init(struct bpf_prog *prog, union bpf_attr *attr);
856
857static inline bool bpf_prog_is_dev_bound(const struct bpf_prog_aux *aux)
858{
859 return aux->offload_requested;
860}
861
862static inline bool bpf_map_is_dev_bound(struct bpf_map *map)
863{
864 return unlikely(map->ops == &bpf_map_offload_ops);
865}
866
867struct bpf_map *bpf_map_offload_map_alloc(union bpf_attr *attr);
868void bpf_map_offload_map_free(struct bpf_map *map);
869#else
870static inline int bpf_prog_offload_init(struct bpf_prog *prog,
871 union bpf_attr *attr)
872{
873 return -EOPNOTSUPP;
874}
875
876static inline bool bpf_prog_is_dev_bound(struct bpf_prog_aux *aux)
877{
878 return false;
879}
880
881static inline bool bpf_map_is_dev_bound(struct bpf_map *map)
882{
883 return false;
884}
885
886static inline struct bpf_map *bpf_map_offload_map_alloc(union bpf_attr *attr)
887{
888 return ERR_PTR(-EOPNOTSUPP);
889}
890
891static inline void bpf_map_offload_map_free(struct bpf_map *map)
892{
893}
894#endif
895
896#if defined(CONFIG_BPF_STREAM_PARSER)
897int sock_map_prog_update(struct bpf_map *map, struct bpf_prog *prog, u32 which);
898int sock_map_get_from_fd(const union bpf_attr *attr, struct bpf_prog *prog);
899#else
900static inline int sock_map_prog_update(struct bpf_map *map,
901 struct bpf_prog *prog, u32 which)
902{
903 return -EOPNOTSUPP;
904}
905
906static inline int sock_map_get_from_fd(const union bpf_attr *attr,
907 struct bpf_prog *prog)
908{
909 return -EINVAL;
910}
911#endif
912
913#if defined(CONFIG_XDP_SOCKETS)
914struct xdp_sock;
915struct xdp_sock *__xsk_map_lookup_elem(struct bpf_map *map, u32 key);
916int __xsk_map_redirect(struct bpf_map *map, struct xdp_buff *xdp,
917 struct xdp_sock *xs);
918void __xsk_map_flush(struct bpf_map *map);
919#else
920struct xdp_sock;
921static inline struct xdp_sock *__xsk_map_lookup_elem(struct bpf_map *map,
922 u32 key)
923{
924 return NULL;
925}
926
927static inline int __xsk_map_redirect(struct bpf_map *map, struct xdp_buff *xdp,
928 struct xdp_sock *xs)
929{
930 return -EOPNOTSUPP;
931}
932
933static inline void __xsk_map_flush(struct bpf_map *map)
934{
935}
936#endif
937
938#if defined(CONFIG_INET) && defined(CONFIG_BPF_SYSCALL)
939void bpf_sk_reuseport_detach(struct sock *sk);
940int bpf_fd_reuseport_array_lookup_elem(struct bpf_map *map, void *key,
941 void *value);
942int bpf_fd_reuseport_array_update_elem(struct bpf_map *map, void *key,
943 void *value, u64 map_flags);
944#else
945static inline void bpf_sk_reuseport_detach(struct sock *sk)
946{
947}
948
949#ifdef CONFIG_BPF_SYSCALL
950static inline int bpf_fd_reuseport_array_lookup_elem(struct bpf_map *map,
951 void *key, void *value)
952{
953 return -EOPNOTSUPP;
954}
955
956static inline int bpf_fd_reuseport_array_update_elem(struct bpf_map *map,
957 void *key, void *value,
958 u64 map_flags)
959{
960 return -EOPNOTSUPP;
961}
962#endif
963#endif
964
965
966extern const struct bpf_func_proto bpf_map_lookup_elem_proto;
967extern const struct bpf_func_proto bpf_map_update_elem_proto;
968extern const struct bpf_func_proto bpf_map_delete_elem_proto;
969extern const struct bpf_func_proto bpf_map_push_elem_proto;
970extern const struct bpf_func_proto bpf_map_pop_elem_proto;
971extern const struct bpf_func_proto bpf_map_peek_elem_proto;
972
973extern const struct bpf_func_proto bpf_get_prandom_u32_proto;
974extern const struct bpf_func_proto bpf_get_smp_processor_id_proto;
975extern const struct bpf_func_proto bpf_get_numa_node_id_proto;
976extern const struct bpf_func_proto bpf_tail_call_proto;
977extern const struct bpf_func_proto bpf_ktime_get_ns_proto;
978extern const struct bpf_func_proto bpf_get_current_pid_tgid_proto;
979extern const struct bpf_func_proto bpf_get_current_uid_gid_proto;
980extern const struct bpf_func_proto bpf_get_current_comm_proto;
981extern const struct bpf_func_proto bpf_get_stackid_proto;
982extern const struct bpf_func_proto bpf_get_stack_proto;
983extern const struct bpf_func_proto bpf_sock_map_update_proto;
984extern const struct bpf_func_proto bpf_sock_hash_update_proto;
985extern const struct bpf_func_proto bpf_get_current_cgroup_id_proto;
986extern const struct bpf_func_proto bpf_msg_redirect_hash_proto;
987extern const struct bpf_func_proto bpf_msg_redirect_map_proto;
988extern const struct bpf_func_proto bpf_sk_redirect_hash_proto;
989extern const struct bpf_func_proto bpf_sk_redirect_map_proto;
990extern const struct bpf_func_proto bpf_spin_lock_proto;
991extern const struct bpf_func_proto bpf_spin_unlock_proto;
992extern const struct bpf_func_proto bpf_get_local_storage_proto;
993extern const struct bpf_func_proto bpf_strtol_proto;
994extern const struct bpf_func_proto bpf_strtoul_proto;
995
996
997void bpf_user_rnd_init_once(void);
998u64 bpf_user_rnd_u32(u64 r1, u64 r2, u64 r3, u64 r4, u64 r5);
999
1000#if defined(CONFIG_NET)
1001bool bpf_sock_common_is_valid_access(int off, int size,
1002 enum bpf_access_type type,
1003 struct bpf_insn_access_aux *info);
1004bool bpf_sock_is_valid_access(int off, int size, enum bpf_access_type type,
1005 struct bpf_insn_access_aux *info);
1006u32 bpf_sock_convert_ctx_access(enum bpf_access_type type,
1007 const struct bpf_insn *si,
1008 struct bpf_insn *insn_buf,
1009 struct bpf_prog *prog,
1010 u32 *target_size);
1011#else
1012static inline bool bpf_sock_common_is_valid_access(int off, int size,
1013 enum bpf_access_type type,
1014 struct bpf_insn_access_aux *info)
1015{
1016 return false;
1017}
1018static inline bool bpf_sock_is_valid_access(int off, int size,
1019 enum bpf_access_type type,
1020 struct bpf_insn_access_aux *info)
1021{
1022 return false;
1023}
1024static inline u32 bpf_sock_convert_ctx_access(enum bpf_access_type type,
1025 const struct bpf_insn *si,
1026 struct bpf_insn *insn_buf,
1027 struct bpf_prog *prog,
1028 u32 *target_size)
1029{
1030 return 0;
1031}
1032#endif
1033
1034#ifdef CONFIG_INET
1035bool bpf_tcp_sock_is_valid_access(int off, int size, enum bpf_access_type type,
1036 struct bpf_insn_access_aux *info);
1037
1038u32 bpf_tcp_sock_convert_ctx_access(enum bpf_access_type type,
1039 const struct bpf_insn *si,
1040 struct bpf_insn *insn_buf,
1041 struct bpf_prog *prog,
1042 u32 *target_size);
1043#else
1044static inline bool bpf_tcp_sock_is_valid_access(int off, int size,
1045 enum bpf_access_type type,
1046 struct bpf_insn_access_aux *info)
1047{
1048 return false;
1049}
1050
1051static inline u32 bpf_tcp_sock_convert_ctx_access(enum bpf_access_type type,
1052 const struct bpf_insn *si,
1053 struct bpf_insn *insn_buf,
1054 struct bpf_prog *prog,
1055 u32 *target_size)
1056{
1057 return 0;
1058}
1059#endif
1060
1061#endif
1062