1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /* Copyright (c) 2011-2014 PLUMgrid, http://plumgrid.com
7 #include <uapi/linux/bpf.h>
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/mm_types.h>
16 #include <linux/wait.h>
17 #include <linux/u64_stats_sync.h>
18 #include <linux/refcount.h>
19 #include <linux/mutex.h>
21 struct bpf_verifier_env;
22 struct bpf_verifier_log;
31 struct exception_table_entry;
33 extern struct idr btf_idr;
34 extern spinlock_t btf_idr_lock;
36 /* map is generic key/value storage optionally accesible by eBPF programs */
38 /* funcs callable from userspace (via syscall) */
39 int (*map_alloc_check)(union bpf_attr *attr);
40 struct bpf_map *(*map_alloc)(union bpf_attr *attr);
41 void (*map_release)(struct bpf_map *map, struct file *map_file);
42 void (*map_free)(struct bpf_map *map);
43 int (*map_get_next_key)(struct bpf_map *map, void *key, void *next_key);
44 void (*map_release_uref)(struct bpf_map *map);
45 void *(*map_lookup_elem_sys_only)(struct bpf_map *map, void *key);
47 /* funcs callable from userspace and from eBPF programs */
48 void *(*map_lookup_elem)(struct bpf_map *map, void *key);
49 int (*map_update_elem)(struct bpf_map *map, void *key, void *value, u64 flags);
50 int (*map_delete_elem)(struct bpf_map *map, void *key);
51 int (*map_push_elem)(struct bpf_map *map, void *value, u64 flags);
52 int (*map_pop_elem)(struct bpf_map *map, void *value);
53 int (*map_peek_elem)(struct bpf_map *map, void *value);
55 /* funcs called by prog_array and perf_event_array map */
56 void *(*map_fd_get_ptr)(struct bpf_map *map, struct file *map_file,
58 void (*map_fd_put_ptr)(void *ptr);
59 u32 (*map_gen_lookup)(struct bpf_map *map, struct bpf_insn *insn_buf);
60 u32 (*map_fd_sys_lookup_elem)(void *ptr);
61 void (*map_seq_show_elem)(struct bpf_map *map, void *key,
63 int (*map_check_btf)(const struct bpf_map *map,
64 const struct btf *btf,
65 const struct btf_type *key_type,
66 const struct btf_type *value_type);
68 /* Prog poke tracking helpers. */
69 int (*map_poke_track)(struct bpf_map *map, struct bpf_prog_aux *aux);
70 void (*map_poke_untrack)(struct bpf_map *map, struct bpf_prog_aux *aux);
71 void (*map_poke_run)(struct bpf_map *map, u32 key, struct bpf_prog *old,
72 struct bpf_prog *new);
74 /* Direct value access helpers. */
75 int (*map_direct_value_addr)(const struct bpf_map *map,
77 int (*map_direct_value_meta)(const struct bpf_map *map,
79 int (*map_mmap)(struct bpf_map *map, struct vm_area_struct *vma);
82 struct bpf_map_memory {
84 struct user_struct *user;
88 /* The first two cachelines with read-mostly members of which some
89 * are also accessed in fast-path (e.g. ops, max_entries).
91 const struct bpf_map_ops *ops ____cacheline_aligned;
92 struct bpf_map *inner_map_meta;
93 #ifdef CONFIG_SECURITY
96 enum bpf_map_type map_type;
101 int spin_lock_off; /* >=0 valid offset, <0 error */
105 u32 btf_value_type_id;
107 struct bpf_map_memory memory;
108 char name[BPF_OBJ_NAME_LEN];
110 bool frozen; /* write-once; write-protected by freeze_mutex */
113 /* The 3rd and 4th cacheline with misc members to avoid false sharing
114 * particularly with refcounting.
116 atomic64_t refcnt ____cacheline_aligned;
118 struct work_struct work;
119 struct mutex freeze_mutex;
120 u64 writecnt; /* writable mmap cnt; protected by freeze_mutex */
123 static inline bool map_value_has_spin_lock(const struct bpf_map *map)
125 return map->spin_lock_off >= 0;
128 static inline void check_and_init_map_lock(struct bpf_map *map, void *dst)
130 if (likely(!map_value_has_spin_lock(map)))
132 *(struct bpf_spin_lock *)(dst + map->spin_lock_off) =
133 (struct bpf_spin_lock){};
136 /* copy everything but bpf_spin_lock */
137 static inline void copy_map_value(struct bpf_map *map, void *dst, void *src)
139 if (unlikely(map_value_has_spin_lock(map))) {
140 u32 off = map->spin_lock_off;
142 memcpy(dst, src, off);
143 memcpy(dst + off + sizeof(struct bpf_spin_lock),
144 src + off + sizeof(struct bpf_spin_lock),
145 map->value_size - off - sizeof(struct bpf_spin_lock));
147 memcpy(dst, src, map->value_size);
150 void copy_map_value_locked(struct bpf_map *map, void *dst, void *src,
153 struct bpf_offload_dev;
154 struct bpf_offloaded_map;
156 struct bpf_map_dev_ops {
157 int (*map_get_next_key)(struct bpf_offloaded_map *map,
158 void *key, void *next_key);
159 int (*map_lookup_elem)(struct bpf_offloaded_map *map,
160 void *key, void *value);
161 int (*map_update_elem)(struct bpf_offloaded_map *map,
162 void *key, void *value, u64 flags);
163 int (*map_delete_elem)(struct bpf_offloaded_map *map, void *key);
166 struct bpf_offloaded_map {
168 struct net_device *netdev;
169 const struct bpf_map_dev_ops *dev_ops;
171 struct list_head offloads;
174 static inline struct bpf_offloaded_map *map_to_offmap(struct bpf_map *map)
176 return container_of(map, struct bpf_offloaded_map, map);
179 static inline bool bpf_map_offload_neutral(const struct bpf_map *map)
181 return map->map_type == BPF_MAP_TYPE_PERF_EVENT_ARRAY;
184 static inline bool bpf_map_support_seq_show(const struct bpf_map *map)
186 return map->btf && map->ops->map_seq_show_elem;
189 int map_check_no_btf(const struct bpf_map *map,
190 const struct btf *btf,
191 const struct btf_type *key_type,
192 const struct btf_type *value_type);
194 extern const struct bpf_map_ops bpf_map_offload_ops;
196 /* function argument constraints */
198 ARG_DONTCARE = 0, /* unused argument in helper function */
200 /* the following constraints used to prototype
201 * bpf_map_lookup/update/delete_elem() functions
203 ARG_CONST_MAP_PTR, /* const argument used as pointer to bpf_map */
204 ARG_PTR_TO_MAP_KEY, /* pointer to stack used as map key */
205 ARG_PTR_TO_MAP_VALUE, /* pointer to stack used as map value */
206 ARG_PTR_TO_UNINIT_MAP_VALUE, /* pointer to valid memory used to store a map value */
207 ARG_PTR_TO_MAP_VALUE_OR_NULL, /* pointer to stack used as map value or NULL */
209 /* the following constraints used to prototype bpf_memcmp() and other
210 * functions that access data on eBPF program stack
212 ARG_PTR_TO_MEM, /* pointer to valid memory (stack, packet, map value) */
213 ARG_PTR_TO_MEM_OR_NULL, /* pointer to valid memory or NULL */
214 ARG_PTR_TO_UNINIT_MEM, /* pointer to memory does not need to be initialized,
215 * helper function must fill all bytes or clear
216 * them in error case.
219 ARG_CONST_SIZE, /* number of bytes accessed from memory */
220 ARG_CONST_SIZE_OR_ZERO, /* number of bytes accessed from memory or 0 */
222 ARG_PTR_TO_CTX, /* pointer to context */
223 ARG_ANYTHING, /* any (initialized) argument is ok */
224 ARG_PTR_TO_SPIN_LOCK, /* pointer to bpf_spin_lock */
225 ARG_PTR_TO_SOCK_COMMON, /* pointer to sock_common */
226 ARG_PTR_TO_INT, /* pointer to int */
227 ARG_PTR_TO_LONG, /* pointer to long */
228 ARG_PTR_TO_SOCKET, /* pointer to bpf_sock (fullsock) */
229 ARG_PTR_TO_BTF_ID, /* pointer to in-kernel struct */
232 /* type of values returned from helper functions */
233 enum bpf_return_type {
234 RET_INTEGER, /* function returns integer */
235 RET_VOID, /* function doesn't return anything */
236 RET_PTR_TO_MAP_VALUE, /* returns a pointer to map elem value */
237 RET_PTR_TO_MAP_VALUE_OR_NULL, /* returns a pointer to map elem value or NULL */
238 RET_PTR_TO_SOCKET_OR_NULL, /* returns a pointer to a socket or NULL */
239 RET_PTR_TO_TCP_SOCK_OR_NULL, /* returns a pointer to a tcp_sock or NULL */
240 RET_PTR_TO_SOCK_COMMON_OR_NULL, /* returns a pointer to a sock_common or NULL */
243 /* eBPF function prototype used by verifier to allow BPF_CALLs from eBPF programs
244 * to in-kernel helper functions and for adjusting imm32 field in BPF_CALL
245 * instructions after verifying
247 struct bpf_func_proto {
248 u64 (*func)(u64 r1, u64 r2, u64 r3, u64 r4, u64 r5);
251 enum bpf_return_type ret_type;
254 enum bpf_arg_type arg1_type;
255 enum bpf_arg_type arg2_type;
256 enum bpf_arg_type arg3_type;
257 enum bpf_arg_type arg4_type;
258 enum bpf_arg_type arg5_type;
260 enum bpf_arg_type arg_type[5];
262 int *btf_id; /* BTF ids of arguments */
265 /* bpf_context is intentionally undefined structure. Pointer to bpf_context is
266 * the first argument to eBPF programs.
267 * For socket filters: 'struct bpf_context *' == 'struct sk_buff *'
271 enum bpf_access_type {
276 /* types of values stored in eBPF registers */
277 /* Pointer types represent:
280 * pointer + (u16) var
281 * pointer + (u16) var + imm
282 * if (range > 0) then [ptr, ptr + range - off) is safe to access
283 * if (id > 0) means that some 'var' was added
284 * if (off > 0) means that 'imm' was added
287 NOT_INIT = 0, /* nothing was written into register */
288 SCALAR_VALUE, /* reg doesn't contain a valid pointer */
289 PTR_TO_CTX, /* reg points to bpf_context */
290 CONST_PTR_TO_MAP, /* reg points to struct bpf_map */
291 PTR_TO_MAP_VALUE, /* reg points to map element value */
292 PTR_TO_MAP_VALUE_OR_NULL,/* points to map elem value or NULL */
293 PTR_TO_STACK, /* reg == frame_pointer + offset */
294 PTR_TO_PACKET_META, /* skb->data - meta_len */
295 PTR_TO_PACKET, /* reg points to skb->data */
296 PTR_TO_PACKET_END, /* skb->data + headlen */
297 PTR_TO_FLOW_KEYS, /* reg points to bpf_flow_keys */
298 PTR_TO_SOCKET, /* reg points to struct bpf_sock */
299 PTR_TO_SOCKET_OR_NULL, /* reg points to struct bpf_sock or NULL */
300 PTR_TO_SOCK_COMMON, /* reg points to sock_common */
301 PTR_TO_SOCK_COMMON_OR_NULL, /* reg points to sock_common or NULL */
302 PTR_TO_TCP_SOCK, /* reg points to struct tcp_sock */
303 PTR_TO_TCP_SOCK_OR_NULL, /* reg points to struct tcp_sock or NULL */
304 PTR_TO_TP_BUFFER, /* reg points to a writable raw tp's buffer */
305 PTR_TO_XDP_SOCK, /* reg points to struct xdp_sock */
306 PTR_TO_BTF_ID, /* reg points to kernel struct */
309 /* The information passed from prog-specific *_is_valid_access
310 * back to the verifier.
312 struct bpf_insn_access_aux {
313 enum bpf_reg_type reg_type;
318 struct bpf_verifier_log *log; /* for verbose logs */
322 bpf_ctx_record_field_size(struct bpf_insn_access_aux *aux, u32 size)
324 aux->ctx_field_size = size;
327 struct bpf_prog_ops {
328 int (*test_run)(struct bpf_prog *prog, const union bpf_attr *kattr,
329 union bpf_attr __user *uattr);
332 struct bpf_verifier_ops {
333 /* return eBPF function prototype for verification */
334 const struct bpf_func_proto *
335 (*get_func_proto)(enum bpf_func_id func_id,
336 const struct bpf_prog *prog);
338 /* return true if 'size' wide access at offset 'off' within bpf_context
339 * with 'type' (read or write) is allowed
341 bool (*is_valid_access)(int off, int size, enum bpf_access_type type,
342 const struct bpf_prog *prog,
343 struct bpf_insn_access_aux *info);
344 int (*gen_prologue)(struct bpf_insn *insn, bool direct_write,
345 const struct bpf_prog *prog);
346 int (*gen_ld_abs)(const struct bpf_insn *orig,
347 struct bpf_insn *insn_buf);
348 u32 (*convert_ctx_access)(enum bpf_access_type type,
349 const struct bpf_insn *src,
350 struct bpf_insn *dst,
351 struct bpf_prog *prog, u32 *target_size);
354 struct bpf_prog_offload_ops {
355 /* verifier basic callbacks */
356 int (*insn_hook)(struct bpf_verifier_env *env,
357 int insn_idx, int prev_insn_idx);
358 int (*finalize)(struct bpf_verifier_env *env);
359 /* verifier optimization callbacks (called after .finalize) */
360 int (*replace_insn)(struct bpf_verifier_env *env, u32 off,
361 struct bpf_insn *insn);
362 int (*remove_insns)(struct bpf_verifier_env *env, u32 off, u32 cnt);
363 /* program management callbacks */
364 int (*prepare)(struct bpf_prog *prog);
365 int (*translate)(struct bpf_prog *prog);
366 void (*destroy)(struct bpf_prog *prog);
369 struct bpf_prog_offload {
370 struct bpf_prog *prog;
371 struct net_device *netdev;
372 struct bpf_offload_dev *offdev;
374 struct list_head offloads;
381 enum bpf_cgroup_storage_type {
382 BPF_CGROUP_STORAGE_SHARED,
383 BPF_CGROUP_STORAGE_PERCPU,
384 __BPF_CGROUP_STORAGE_MAX
387 #define MAX_BPF_CGROUP_STORAGE_TYPE __BPF_CGROUP_STORAGE_MAX
389 /* The longest tracepoint has 12 args.
390 * See include/trace/bpf_probe.h
392 #define MAX_BPF_FUNC_ARGS 12
394 struct bpf_prog_stats {
397 struct u64_stats_sync syncp;
398 } __aligned(2 * sizeof(u64));
400 struct btf_func_model {
403 u8 arg_size[MAX_BPF_FUNC_ARGS];
406 /* Restore arguments before returning from trampoline to let original function
407 * continue executing. This flag is used for fentry progs when there are no
410 #define BPF_TRAMP_F_RESTORE_REGS BIT(0)
411 /* Call original function after fentry progs, but before fexit progs.
412 * Makes sense for fentry/fexit, normal calls and indirect calls.
414 #define BPF_TRAMP_F_CALL_ORIG BIT(1)
415 /* Skip current frame and return to parent. Makes sense for fentry/fexit
416 * programs only. Should not be used with normal calls and indirect calls.
418 #define BPF_TRAMP_F_SKIP_FRAME BIT(2)
420 /* Different use cases for BPF trampoline:
421 * 1. replace nop at the function entry (kprobe equivalent)
422 * flags = BPF_TRAMP_F_RESTORE_REGS
423 * fentry = a set of programs to run before returning from trampoline
425 * 2. replace nop at the function entry (kprobe + kretprobe equivalent)
426 * flags = BPF_TRAMP_F_CALL_ORIG | BPF_TRAMP_F_SKIP_FRAME
427 * orig_call = fentry_ip + MCOUNT_INSN_SIZE
428 * fentry = a set of program to run before calling original function
429 * fexit = a set of program to run after original function
431 * 3. replace direct call instruction anywhere in the function body
432 * or assign a function pointer for indirect call (like tcp_congestion_ops->cong_avoid)
434 * fentry = a set of programs to run before returning from trampoline
435 * With flags = BPF_TRAMP_F_CALL_ORIG
436 * orig_call = original callback addr or direct function addr
437 * fentry = a set of program to run before calling original function
438 * fexit = a set of program to run after original function
440 int arch_prepare_bpf_trampoline(void *image, struct btf_func_model *m, u32 flags,
441 struct bpf_prog **fentry_progs, int fentry_cnt,
442 struct bpf_prog **fexit_progs, int fexit_cnt,
444 /* these two functions are called from generated trampoline */
445 u64 notrace __bpf_prog_enter(void);
446 void notrace __bpf_prog_exit(struct bpf_prog *prog, u64 start);
448 enum bpf_tramp_prog_type {
454 struct bpf_trampoline {
455 /* hlist for trampoline_table */
456 struct hlist_node hlist;
457 /* serializes access to fields of this trampoline */
462 struct btf_func_model model;
465 /* list of BPF programs using this trampoline */
466 struct hlist_head progs_hlist[BPF_TRAMP_MAX];
467 /* Number of attached programs. A counter per kind. */
468 int progs_cnt[BPF_TRAMP_MAX];
469 /* Executable image of trampoline */
474 #define BPF_DISPATCHER_MAX 48 /* Fits in 2048B */
476 struct bpf_dispatcher_prog {
477 struct bpf_prog *prog;
481 struct bpf_dispatcher {
482 /* dispatcher mutex */
485 struct bpf_dispatcher_prog progs[BPF_DISPATCHER_MAX];
491 static __always_inline unsigned int bpf_dispatcher_nopfunc(
493 const struct bpf_insn *insnsi,
494 unsigned int (*bpf_func)(const void *,
495 const struct bpf_insn *))
497 return bpf_func(ctx, insnsi);
499 #ifdef CONFIG_BPF_JIT
500 struct bpf_trampoline *bpf_trampoline_lookup(u64 key);
501 int bpf_trampoline_link_prog(struct bpf_prog *prog);
502 int bpf_trampoline_unlink_prog(struct bpf_prog *prog);
503 void bpf_trampoline_put(struct bpf_trampoline *tr);
504 void *bpf_jit_alloc_exec_page(void);
505 #define BPF_DISPATCHER_INIT(name) { \
506 .mutex = __MUTEX_INITIALIZER(name.mutex), \
507 .func = &name##func, \
514 #define DEFINE_BPF_DISPATCHER(name) \
515 noinline unsigned int name##func( \
517 const struct bpf_insn *insnsi, \
518 unsigned int (*bpf_func)(const void *, \
519 const struct bpf_insn *)) \
521 return bpf_func(ctx, insnsi); \
523 EXPORT_SYMBOL(name##func); \
524 struct bpf_dispatcher name = BPF_DISPATCHER_INIT(name);
525 #define DECLARE_BPF_DISPATCHER(name) \
526 unsigned int name##func( \
528 const struct bpf_insn *insnsi, \
529 unsigned int (*bpf_func)(const void *, \
530 const struct bpf_insn *)); \
531 extern struct bpf_dispatcher name;
532 #define BPF_DISPATCHER_FUNC(name) name##func
533 #define BPF_DISPATCHER_PTR(name) (&name)
534 void bpf_dispatcher_change_prog(struct bpf_dispatcher *d, struct bpf_prog *from,
535 struct bpf_prog *to);
537 static inline struct bpf_trampoline *bpf_trampoline_lookup(u64 key)
541 static inline int bpf_trampoline_link_prog(struct bpf_prog *prog)
545 static inline int bpf_trampoline_unlink_prog(struct bpf_prog *prog)
549 static inline void bpf_trampoline_put(struct bpf_trampoline *tr) {}
550 #define DEFINE_BPF_DISPATCHER(name)
551 #define DECLARE_BPF_DISPATCHER(name)
552 #define BPF_DISPATCHER_FUNC(name) bpf_dispatcher_nopfunc
553 #define BPF_DISPATCHER_PTR(name) NULL
554 static inline void bpf_dispatcher_change_prog(struct bpf_dispatcher *d,
555 struct bpf_prog *from,
556 struct bpf_prog *to) {}
559 struct bpf_func_info_aux {
563 enum bpf_jit_poke_reason {
564 BPF_POKE_REASON_TAIL_CALL,
567 /* Descriptor of pokes pointing /into/ the JITed image. */
568 struct bpf_jit_poke_descriptor {
581 struct bpf_prog_aux {
589 u32 func_cnt; /* used by non-func prog as the number of func progs */
590 u32 func_idx; /* 0 for non-func prog, the index in func array for func prog */
591 u32 attach_btf_id; /* in-kernel BTF type id to attach to */
592 struct bpf_prog *linked_prog;
593 bool verifier_zext; /* Zero extensions has been inserted by verifier. */
594 bool offload_requested;
595 bool attach_btf_trace; /* true if attaching to BTF-enabled raw tp */
596 bool func_proto_unreliable;
597 enum bpf_tramp_prog_type trampoline_prog_type;
598 struct bpf_trampoline *trampoline;
599 struct hlist_node tramp_hlist;
600 /* BTF_KIND_FUNC_PROTO for valid attach_btf_id */
601 const struct btf_type *attach_func_proto;
602 /* function name for valid attach_btf_id */
603 const char *attach_func_name;
604 struct bpf_prog **func;
605 void *jit_data; /* JIT specific data. arch dependent */
606 struct bpf_jit_poke_descriptor *poke_tab;
608 struct latch_tree_node ksym_tnode;
609 struct list_head ksym_lnode;
610 const struct bpf_prog_ops *ops;
611 struct bpf_map **used_maps;
612 struct bpf_prog *prog;
613 struct user_struct *user;
614 u64 load_time; /* ns since boottime */
615 struct bpf_map *cgroup_storage[MAX_BPF_CGROUP_STORAGE_TYPE];
616 char name[BPF_OBJ_NAME_LEN];
617 #ifdef CONFIG_SECURITY
620 struct bpf_prog_offload *offload;
622 struct bpf_func_info *func_info;
623 struct bpf_func_info_aux *func_info_aux;
624 /* bpf_line_info loaded from userspace. linfo->insn_off
625 * has the xlated insn offset.
626 * Both the main and sub prog share the same linfo.
627 * The subprog can access its first linfo by
628 * using the linfo_idx.
630 struct bpf_line_info *linfo;
631 /* jited_linfo is the jited addr of the linfo. It has a
632 * one to one mapping to linfo:
633 * jited_linfo[i] is the jited addr for the linfo[i]->insn_off.
634 * Both the main and sub prog share the same jited_linfo.
635 * The subprog can access its first jited_linfo by
636 * using the linfo_idx.
641 /* subprog can use linfo_idx to access its first linfo and
643 * main prog always has linfo_idx == 0
647 struct exception_table_entry *extable;
648 struct bpf_prog_stats __percpu *stats;
650 struct work_struct work;
655 struct bpf_array_aux {
656 /* 'Ownership' of prog array is claimed by the first program that
657 * is going to use this map or by the first program which FD is
658 * stored in the map to make sure that all callers and callees have
659 * the same prog type and JITed flag.
661 enum bpf_prog_type type;
663 /* Programs with direct jumps into programs part of this array. */
664 struct list_head poke_progs;
666 struct mutex poke_mutex;
667 struct work_struct work;
674 struct bpf_array_aux *aux;
676 char value[0] __aligned(8);
677 void *ptrs[0] __aligned(8);
678 void __percpu *pptrs[0] __aligned(8);
682 #define BPF_COMPLEXITY_LIMIT_INSNS 1000000 /* yes. 1M insns */
683 #define MAX_TAIL_CALL_CNT 32
685 #define BPF_F_ACCESS_MASK (BPF_F_RDONLY | \
686 BPF_F_RDONLY_PROG | \
690 #define BPF_MAP_CAN_READ BIT(0)
691 #define BPF_MAP_CAN_WRITE BIT(1)
693 static inline u32 bpf_map_flags_to_cap(struct bpf_map *map)
695 u32 access_flags = map->map_flags & (BPF_F_RDONLY_PROG | BPF_F_WRONLY_PROG);
697 /* Combination of BPF_F_RDONLY_PROG | BPF_F_WRONLY_PROG is
700 if (access_flags & BPF_F_RDONLY_PROG)
701 return BPF_MAP_CAN_READ;
702 else if (access_flags & BPF_F_WRONLY_PROG)
703 return BPF_MAP_CAN_WRITE;
705 return BPF_MAP_CAN_READ | BPF_MAP_CAN_WRITE;
708 static inline bool bpf_map_flags_access_ok(u32 access_flags)
710 return (access_flags & (BPF_F_RDONLY_PROG | BPF_F_WRONLY_PROG)) !=
711 (BPF_F_RDONLY_PROG | BPF_F_WRONLY_PROG);
714 struct bpf_event_entry {
715 struct perf_event *event;
716 struct file *perf_file;
717 struct file *map_file;
721 bool bpf_prog_array_compatible(struct bpf_array *array, const struct bpf_prog *fp);
722 int bpf_prog_calc_tag(struct bpf_prog *fp);
723 const char *kernel_type_name(u32 btf_type_id);
725 const struct bpf_func_proto *bpf_get_trace_printk_proto(void);
727 typedef unsigned long (*bpf_ctx_copy_t)(void *dst, const void *src,
728 unsigned long off, unsigned long len);
729 typedef u32 (*bpf_convert_ctx_access_t)(enum bpf_access_type type,
730 const struct bpf_insn *src,
731 struct bpf_insn *dst,
732 struct bpf_prog *prog,
735 u64 bpf_event_output(struct bpf_map *map, u64 flags, void *meta, u64 meta_size,
736 void *ctx, u64 ctx_size, bpf_ctx_copy_t ctx_copy);
738 /* an array of programs to be executed under rcu_lock.
741 * ret = BPF_PROG_RUN_ARRAY(&bpf_prog_array, ctx, BPF_PROG_RUN);
743 * the structure returned by bpf_prog_array_alloc() should be populated
744 * with program pointers and the last pointer must be NULL.
745 * The user has to keep refcnt on the program and make sure the program
746 * is removed from the array before bpf_prog_put().
747 * The 'struct bpf_prog_array *' should only be replaced with xchg()
748 * since other cpus are walking the array of pointers in parallel.
750 struct bpf_prog_array_item {
751 struct bpf_prog *prog;
752 struct bpf_cgroup_storage *cgroup_storage[MAX_BPF_CGROUP_STORAGE_TYPE];
755 struct bpf_prog_array {
757 struct bpf_prog_array_item items[0];
760 struct bpf_prog_array *bpf_prog_array_alloc(u32 prog_cnt, gfp_t flags);
761 void bpf_prog_array_free(struct bpf_prog_array *progs);
762 int bpf_prog_array_length(struct bpf_prog_array *progs);
763 bool bpf_prog_array_is_empty(struct bpf_prog_array *array);
764 int bpf_prog_array_copy_to_user(struct bpf_prog_array *progs,
765 __u32 __user *prog_ids, u32 cnt);
767 void bpf_prog_array_delete_safe(struct bpf_prog_array *progs,
768 struct bpf_prog *old_prog);
769 int bpf_prog_array_copy_info(struct bpf_prog_array *array,
770 u32 *prog_ids, u32 request_cnt,
772 int bpf_prog_array_copy(struct bpf_prog_array *old_array,
773 struct bpf_prog *exclude_prog,
774 struct bpf_prog *include_prog,
775 struct bpf_prog_array **new_array);
777 #define __BPF_PROG_RUN_ARRAY(array, ctx, func, check_non_null) \
779 struct bpf_prog_array_item *_item; \
780 struct bpf_prog *_prog; \
781 struct bpf_prog_array *_array; \
785 _array = rcu_dereference(array); \
786 if (unlikely(check_non_null && !_array))\
788 _item = &_array->items[0]; \
789 while ((_prog = READ_ONCE(_item->prog))) { \
790 bpf_cgroup_storage_set(_item->cgroup_storage); \
791 _ret &= func(_prog, ctx); \
800 /* To be used by __cgroup_bpf_run_filter_skb for EGRESS BPF progs
801 * so BPF programs can request cwr for TCP packets.
803 * Current cgroup skb programs can only return 0 or 1 (0 to drop the
804 * packet. This macro changes the behavior so the low order bit
805 * indicates whether the packet should be dropped (0) or not (1)
806 * and the next bit is a congestion notification bit. This could be
807 * used by TCP to call tcp_enter_cwr()
809 * Hence, new allowed return values of CGROUP EGRESS BPF programs are:
812 * 2: drop packet and cn
813 * 3: keep packet and cn
815 * This macro then converts it to one of the NET_XMIT or an error
816 * code that is then interpreted as drop packet (and no cn):
817 * 0: NET_XMIT_SUCCESS skb should be transmitted
818 * 1: NET_XMIT_DROP skb should be dropped and cn
819 * 2: NET_XMIT_CN skb should be transmitted and cn
820 * 3: -EPERM skb should be dropped
822 #define BPF_PROG_CGROUP_INET_EGRESS_RUN_ARRAY(array, ctx, func) \
824 struct bpf_prog_array_item *_item; \
825 struct bpf_prog *_prog; \
826 struct bpf_prog_array *_array; \
832 _array = rcu_dereference(array); \
833 _item = &_array->items[0]; \
834 while ((_prog = READ_ONCE(_item->prog))) { \
835 bpf_cgroup_storage_set(_item->cgroup_storage); \
836 ret = func(_prog, ctx); \
844 _ret = (_cn ? NET_XMIT_CN : NET_XMIT_SUCCESS); \
846 _ret = (_cn ? NET_XMIT_DROP : -EPERM); \
850 #define BPF_PROG_RUN_ARRAY(array, ctx, func) \
851 __BPF_PROG_RUN_ARRAY(array, ctx, func, false)
853 #define BPF_PROG_RUN_ARRAY_CHECK(array, ctx, func) \
854 __BPF_PROG_RUN_ARRAY(array, ctx, func, true)
856 #ifdef CONFIG_BPF_SYSCALL
857 DECLARE_PER_CPU(int, bpf_prog_active);
859 extern const struct file_operations bpf_map_fops;
860 extern const struct file_operations bpf_prog_fops;
862 #define BPF_PROG_TYPE(_id, _name, prog_ctx_type, kern_ctx_type) \
863 extern const struct bpf_prog_ops _name ## _prog_ops; \
864 extern const struct bpf_verifier_ops _name ## _verifier_ops;
865 #define BPF_MAP_TYPE(_id, _ops) \
866 extern const struct bpf_map_ops _ops;
867 #include <linux/bpf_types.h>
871 extern const struct bpf_prog_ops bpf_offload_prog_ops;
872 extern const struct bpf_verifier_ops tc_cls_act_analyzer_ops;
873 extern const struct bpf_verifier_ops xdp_analyzer_ops;
875 struct bpf_prog *bpf_prog_get(u32 ufd);
876 struct bpf_prog *bpf_prog_get_type_dev(u32 ufd, enum bpf_prog_type type,
878 void bpf_prog_add(struct bpf_prog *prog, int i);
879 void bpf_prog_sub(struct bpf_prog *prog, int i);
880 void bpf_prog_inc(struct bpf_prog *prog);
881 struct bpf_prog * __must_check bpf_prog_inc_not_zero(struct bpf_prog *prog);
882 void bpf_prog_put(struct bpf_prog *prog);
883 int __bpf_prog_charge(struct user_struct *user, u32 pages);
884 void __bpf_prog_uncharge(struct user_struct *user, u32 pages);
886 void bpf_prog_free_id(struct bpf_prog *prog, bool do_idr_lock);
887 void bpf_map_free_id(struct bpf_map *map, bool do_idr_lock);
889 struct bpf_map *bpf_map_get_with_uref(u32 ufd);
890 struct bpf_map *__bpf_map_get(struct fd f);
891 void bpf_map_inc(struct bpf_map *map);
892 void bpf_map_inc_with_uref(struct bpf_map *map);
893 struct bpf_map * __must_check bpf_map_inc_not_zero(struct bpf_map *map);
894 void bpf_map_put_with_uref(struct bpf_map *map);
895 void bpf_map_put(struct bpf_map *map);
896 int bpf_map_charge_memlock(struct bpf_map *map, u32 pages);
897 void bpf_map_uncharge_memlock(struct bpf_map *map, u32 pages);
898 int bpf_map_charge_init(struct bpf_map_memory *mem, u64 size);
899 void bpf_map_charge_finish(struct bpf_map_memory *mem);
900 void bpf_map_charge_move(struct bpf_map_memory *dst,
901 struct bpf_map_memory *src);
902 void *bpf_map_area_alloc(u64 size, int numa_node);
903 void *bpf_map_area_mmapable_alloc(u64 size, int numa_node);
904 void bpf_map_area_free(void *base);
905 void bpf_map_init_from_attr(struct bpf_map *map, union bpf_attr *attr);
907 extern int sysctl_unprivileged_bpf_disabled;
909 int bpf_map_new_fd(struct bpf_map *map, int flags);
910 int bpf_prog_new_fd(struct bpf_prog *prog);
912 int bpf_obj_pin_user(u32 ufd, const char __user *pathname);
913 int bpf_obj_get_user(const char __user *pathname, int flags);
915 int bpf_percpu_hash_copy(struct bpf_map *map, void *key, void *value);
916 int bpf_percpu_array_copy(struct bpf_map *map, void *key, void *value);
917 int bpf_percpu_hash_update(struct bpf_map *map, void *key, void *value,
919 int bpf_percpu_array_update(struct bpf_map *map, void *key, void *value,
922 int bpf_stackmap_copy(struct bpf_map *map, void *key, void *value);
924 int bpf_fd_array_map_update_elem(struct bpf_map *map, struct file *map_file,
925 void *key, void *value, u64 map_flags);
926 int bpf_fd_array_map_lookup_elem(struct bpf_map *map, void *key, u32 *value);
927 int bpf_fd_htab_map_update_elem(struct bpf_map *map, struct file *map_file,
928 void *key, void *value, u64 map_flags);
929 int bpf_fd_htab_map_lookup_elem(struct bpf_map *map, void *key, u32 *value);
931 int bpf_get_file_flag(int flags);
932 int bpf_check_uarg_tail_zero(void __user *uaddr, size_t expected_size,
935 /* memcpy that is used with 8-byte aligned pointers, power-of-8 size and
936 * forced to use 'long' read/writes to try to atomically copy long counters.
937 * Best-effort only. No barriers here, since it _will_ race with concurrent
938 * updates from BPF programs. Called from bpf syscall and mostly used with
939 * size 8 or 16 bytes, so ask compiler to inline it.
941 static inline void bpf_long_memcpy(void *dst, const void *src, u32 size)
943 const long *lsrc = src;
946 size /= sizeof(long);
951 /* verify correctness of eBPF program */
952 int bpf_check(struct bpf_prog **fp, union bpf_attr *attr,
953 union bpf_attr __user *uattr);
954 void bpf_patch_call_args(struct bpf_insn *insn, u32 stack_depth);
960 struct bpf_dtab_netdev *__dev_map_lookup_elem(struct bpf_map *map, u32 key);
961 struct bpf_dtab_netdev *__dev_map_hash_lookup_elem(struct bpf_map *map, u32 key);
962 void __dev_map_flush(struct bpf_map *map);
963 int dev_map_enqueue(struct bpf_dtab_netdev *dst, struct xdp_buff *xdp,
964 struct net_device *dev_rx);
965 int dev_map_generic_redirect(struct bpf_dtab_netdev *dst, struct sk_buff *skb,
966 struct bpf_prog *xdp_prog);
968 struct bpf_cpu_map_entry *__cpu_map_lookup_elem(struct bpf_map *map, u32 key);
969 void __cpu_map_flush(struct bpf_map *map);
970 int cpu_map_enqueue(struct bpf_cpu_map_entry *rcpu, struct xdp_buff *xdp,
971 struct net_device *dev_rx);
973 /* Return map's numa specified by userspace */
974 static inline int bpf_map_attr_numa_node(const union bpf_attr *attr)
976 return (attr->map_flags & BPF_F_NUMA_NODE) ?
977 attr->numa_node : NUMA_NO_NODE;
980 struct bpf_prog *bpf_prog_get_type_path(const char *name, enum bpf_prog_type type);
981 int array_map_alloc_check(union bpf_attr *attr);
983 int bpf_prog_test_run_xdp(struct bpf_prog *prog, const union bpf_attr *kattr,
984 union bpf_attr __user *uattr);
985 int bpf_prog_test_run_skb(struct bpf_prog *prog, const union bpf_attr *kattr,
986 union bpf_attr __user *uattr);
987 int bpf_prog_test_run_flow_dissector(struct bpf_prog *prog,
988 const union bpf_attr *kattr,
989 union bpf_attr __user *uattr);
990 bool btf_ctx_access(int off, int size, enum bpf_access_type type,
991 const struct bpf_prog *prog,
992 struct bpf_insn_access_aux *info);
993 int btf_struct_access(struct bpf_verifier_log *log,
994 const struct btf_type *t, int off, int size,
995 enum bpf_access_type atype,
997 int btf_resolve_helper_id(struct bpf_verifier_log *log,
998 const struct bpf_func_proto *fn, int);
1000 int btf_distill_func_proto(struct bpf_verifier_log *log,
1002 const struct btf_type *func_proto,
1003 const char *func_name,
1004 struct btf_func_model *m);
1006 int btf_check_func_arg_match(struct bpf_verifier_env *env, int subprog);
1008 struct bpf_prog *bpf_prog_by_id(u32 id);
1010 #else /* !CONFIG_BPF_SYSCALL */
1011 static inline struct bpf_prog *bpf_prog_get(u32 ufd)
1013 return ERR_PTR(-EOPNOTSUPP);
1016 static inline struct bpf_prog *bpf_prog_get_type_dev(u32 ufd,
1017 enum bpf_prog_type type,
1020 return ERR_PTR(-EOPNOTSUPP);
1023 static inline void bpf_prog_add(struct bpf_prog *prog, int i)
1027 static inline void bpf_prog_sub(struct bpf_prog *prog, int i)
1031 static inline void bpf_prog_put(struct bpf_prog *prog)
1035 static inline void bpf_prog_inc(struct bpf_prog *prog)
1039 static inline struct bpf_prog *__must_check
1040 bpf_prog_inc_not_zero(struct bpf_prog *prog)
1042 return ERR_PTR(-EOPNOTSUPP);
1045 static inline int __bpf_prog_charge(struct user_struct *user, u32 pages)
1050 static inline void __bpf_prog_uncharge(struct user_struct *user, u32 pages)
1054 static inline int bpf_obj_get_user(const char __user *pathname, int flags)
1059 static inline struct net_device *__dev_map_lookup_elem(struct bpf_map *map,
1065 static inline struct net_device *__dev_map_hash_lookup_elem(struct bpf_map *map,
1071 static inline void __dev_map_flush(struct bpf_map *map)
1076 struct bpf_dtab_netdev;
1079 int dev_map_enqueue(struct bpf_dtab_netdev *dst, struct xdp_buff *xdp,
1080 struct net_device *dev_rx)
1087 static inline int dev_map_generic_redirect(struct bpf_dtab_netdev *dst,
1088 struct sk_buff *skb,
1089 struct bpf_prog *xdp_prog)
1095 struct bpf_cpu_map_entry *__cpu_map_lookup_elem(struct bpf_map *map, u32 key)
1100 static inline void __cpu_map_flush(struct bpf_map *map)
1104 static inline int cpu_map_enqueue(struct bpf_cpu_map_entry *rcpu,
1105 struct xdp_buff *xdp,
1106 struct net_device *dev_rx)
1111 static inline struct bpf_prog *bpf_prog_get_type_path(const char *name,
1112 enum bpf_prog_type type)
1114 return ERR_PTR(-EOPNOTSUPP);
1117 static inline int bpf_prog_test_run_xdp(struct bpf_prog *prog,
1118 const union bpf_attr *kattr,
1119 union bpf_attr __user *uattr)
1124 static inline int bpf_prog_test_run_skb(struct bpf_prog *prog,
1125 const union bpf_attr *kattr,
1126 union bpf_attr __user *uattr)
1131 static inline int bpf_prog_test_run_flow_dissector(struct bpf_prog *prog,
1132 const union bpf_attr *kattr,
1133 union bpf_attr __user *uattr)
1138 static inline void bpf_map_put(struct bpf_map *map)
1142 static inline struct bpf_prog *bpf_prog_by_id(u32 id)
1144 return ERR_PTR(-ENOTSUPP);
1146 #endif /* CONFIG_BPF_SYSCALL */
1148 static inline struct bpf_prog *bpf_prog_get_type(u32 ufd,
1149 enum bpf_prog_type type)
1151 return bpf_prog_get_type_dev(ufd, type, false);
1154 bool bpf_prog_get_ok(struct bpf_prog *, enum bpf_prog_type *, bool);
1156 int bpf_prog_offload_compile(struct bpf_prog *prog);
1157 void bpf_prog_offload_destroy(struct bpf_prog *prog);
1158 int bpf_prog_offload_info_fill(struct bpf_prog_info *info,
1159 struct bpf_prog *prog);
1161 int bpf_map_offload_info_fill(struct bpf_map_info *info, struct bpf_map *map);
1163 int bpf_map_offload_lookup_elem(struct bpf_map *map, void *key, void *value);
1164 int bpf_map_offload_update_elem(struct bpf_map *map,
1165 void *key, void *value, u64 flags);
1166 int bpf_map_offload_delete_elem(struct bpf_map *map, void *key);
1167 int bpf_map_offload_get_next_key(struct bpf_map *map,
1168 void *key, void *next_key);
1170 bool bpf_offload_prog_map_match(struct bpf_prog *prog, struct bpf_map *map);
1172 struct bpf_offload_dev *
1173 bpf_offload_dev_create(const struct bpf_prog_offload_ops *ops, void *priv);
1174 void bpf_offload_dev_destroy(struct bpf_offload_dev *offdev);
1175 void *bpf_offload_dev_priv(struct bpf_offload_dev *offdev);
1176 int bpf_offload_dev_netdev_register(struct bpf_offload_dev *offdev,
1177 struct net_device *netdev);
1178 void bpf_offload_dev_netdev_unregister(struct bpf_offload_dev *offdev,
1179 struct net_device *netdev);
1180 bool bpf_offload_dev_match(struct bpf_prog *prog, struct net_device *netdev);
1182 #if defined(CONFIG_NET) && defined(CONFIG_BPF_SYSCALL)
1183 int bpf_prog_offload_init(struct bpf_prog *prog, union bpf_attr *attr);
1185 static inline bool bpf_prog_is_dev_bound(const struct bpf_prog_aux *aux)
1187 return aux->offload_requested;
1190 static inline bool bpf_map_is_dev_bound(struct bpf_map *map)
1192 return unlikely(map->ops == &bpf_map_offload_ops);
1195 struct bpf_map *bpf_map_offload_map_alloc(union bpf_attr *attr);
1196 void bpf_map_offload_map_free(struct bpf_map *map);
1198 static inline int bpf_prog_offload_init(struct bpf_prog *prog,
1199 union bpf_attr *attr)
1204 static inline bool bpf_prog_is_dev_bound(struct bpf_prog_aux *aux)
1209 static inline bool bpf_map_is_dev_bound(struct bpf_map *map)
1214 static inline struct bpf_map *bpf_map_offload_map_alloc(union bpf_attr *attr)
1216 return ERR_PTR(-EOPNOTSUPP);
1219 static inline void bpf_map_offload_map_free(struct bpf_map *map)
1222 #endif /* CONFIG_NET && CONFIG_BPF_SYSCALL */
1224 #if defined(CONFIG_BPF_STREAM_PARSER)
1225 int sock_map_prog_update(struct bpf_map *map, struct bpf_prog *prog, u32 which);
1226 int sock_map_get_from_fd(const union bpf_attr *attr, struct bpf_prog *prog);
1228 static inline int sock_map_prog_update(struct bpf_map *map,
1229 struct bpf_prog *prog, u32 which)
1234 static inline int sock_map_get_from_fd(const union bpf_attr *attr,
1235 struct bpf_prog *prog)
1241 #if defined(CONFIG_INET) && defined(CONFIG_BPF_SYSCALL)
1242 void bpf_sk_reuseport_detach(struct sock *sk);
1243 int bpf_fd_reuseport_array_lookup_elem(struct bpf_map *map, void *key,
1245 int bpf_fd_reuseport_array_update_elem(struct bpf_map *map, void *key,
1246 void *value, u64 map_flags);
1248 static inline void bpf_sk_reuseport_detach(struct sock *sk)
1252 #ifdef CONFIG_BPF_SYSCALL
1253 static inline int bpf_fd_reuseport_array_lookup_elem(struct bpf_map *map,
1254 void *key, void *value)
1259 static inline int bpf_fd_reuseport_array_update_elem(struct bpf_map *map,
1260 void *key, void *value,
1265 #endif /* CONFIG_BPF_SYSCALL */
1266 #endif /* defined(CONFIG_INET) && defined(CONFIG_BPF_SYSCALL) */
1268 /* verifier prototypes for helper functions called from eBPF programs */
1269 extern const struct bpf_func_proto bpf_map_lookup_elem_proto;
1270 extern const struct bpf_func_proto bpf_map_update_elem_proto;
1271 extern const struct bpf_func_proto bpf_map_delete_elem_proto;
1272 extern const struct bpf_func_proto bpf_map_push_elem_proto;
1273 extern const struct bpf_func_proto bpf_map_pop_elem_proto;
1274 extern const struct bpf_func_proto bpf_map_peek_elem_proto;
1276 extern const struct bpf_func_proto bpf_get_prandom_u32_proto;
1277 extern const struct bpf_func_proto bpf_get_smp_processor_id_proto;
1278 extern const struct bpf_func_proto bpf_get_numa_node_id_proto;
1279 extern const struct bpf_func_proto bpf_tail_call_proto;
1280 extern const struct bpf_func_proto bpf_ktime_get_ns_proto;
1281 extern const struct bpf_func_proto bpf_get_current_pid_tgid_proto;
1282 extern const struct bpf_func_proto bpf_get_current_uid_gid_proto;
1283 extern const struct bpf_func_proto bpf_get_current_comm_proto;
1284 extern const struct bpf_func_proto bpf_get_stackid_proto;
1285 extern const struct bpf_func_proto bpf_get_stack_proto;
1286 extern const struct bpf_func_proto bpf_sock_map_update_proto;
1287 extern const struct bpf_func_proto bpf_sock_hash_update_proto;
1288 extern const struct bpf_func_proto bpf_get_current_cgroup_id_proto;
1289 extern const struct bpf_func_proto bpf_msg_redirect_hash_proto;
1290 extern const struct bpf_func_proto bpf_msg_redirect_map_proto;
1291 extern const struct bpf_func_proto bpf_sk_redirect_hash_proto;
1292 extern const struct bpf_func_proto bpf_sk_redirect_map_proto;
1293 extern const struct bpf_func_proto bpf_spin_lock_proto;
1294 extern const struct bpf_func_proto bpf_spin_unlock_proto;
1295 extern const struct bpf_func_proto bpf_get_local_storage_proto;
1296 extern const struct bpf_func_proto bpf_strtol_proto;
1297 extern const struct bpf_func_proto bpf_strtoul_proto;
1298 extern const struct bpf_func_proto bpf_tcp_sock_proto;
1300 /* Shared helpers among cBPF and eBPF. */
1301 void bpf_user_rnd_init_once(void);
1302 u64 bpf_user_rnd_u32(u64 r1, u64 r2, u64 r3, u64 r4, u64 r5);
1304 #if defined(CONFIG_NET)
1305 bool bpf_sock_common_is_valid_access(int off, int size,
1306 enum bpf_access_type type,
1307 struct bpf_insn_access_aux *info);
1308 bool bpf_sock_is_valid_access(int off, int size, enum bpf_access_type type,
1309 struct bpf_insn_access_aux *info);
1310 u32 bpf_sock_convert_ctx_access(enum bpf_access_type type,
1311 const struct bpf_insn *si,
1312 struct bpf_insn *insn_buf,
1313 struct bpf_prog *prog,
1316 static inline bool bpf_sock_common_is_valid_access(int off, int size,
1317 enum bpf_access_type type,
1318 struct bpf_insn_access_aux *info)
1322 static inline bool bpf_sock_is_valid_access(int off, int size,
1323 enum bpf_access_type type,
1324 struct bpf_insn_access_aux *info)
1328 static inline u32 bpf_sock_convert_ctx_access(enum bpf_access_type type,
1329 const struct bpf_insn *si,
1330 struct bpf_insn *insn_buf,
1331 struct bpf_prog *prog,
1339 struct sk_reuseport_kern {
1340 struct sk_buff *skb;
1342 struct sock *selected_sk;
1348 bool bpf_tcp_sock_is_valid_access(int off, int size, enum bpf_access_type type,
1349 struct bpf_insn_access_aux *info);
1351 u32 bpf_tcp_sock_convert_ctx_access(enum bpf_access_type type,
1352 const struct bpf_insn *si,
1353 struct bpf_insn *insn_buf,
1354 struct bpf_prog *prog,
1357 bool bpf_xdp_sock_is_valid_access(int off, int size, enum bpf_access_type type,
1358 struct bpf_insn_access_aux *info);
1360 u32 bpf_xdp_sock_convert_ctx_access(enum bpf_access_type type,
1361 const struct bpf_insn *si,
1362 struct bpf_insn *insn_buf,
1363 struct bpf_prog *prog,
1366 static inline bool bpf_tcp_sock_is_valid_access(int off, int size,
1367 enum bpf_access_type type,
1368 struct bpf_insn_access_aux *info)
1373 static inline u32 bpf_tcp_sock_convert_ctx_access(enum bpf_access_type type,
1374 const struct bpf_insn *si,
1375 struct bpf_insn *insn_buf,
1376 struct bpf_prog *prog,
1381 static inline bool bpf_xdp_sock_is_valid_access(int off, int size,
1382 enum bpf_access_type type,
1383 struct bpf_insn_access_aux *info)
1388 static inline u32 bpf_xdp_sock_convert_ctx_access(enum bpf_access_type type,
1389 const struct bpf_insn *si,
1390 struct bpf_insn *insn_buf,
1391 struct bpf_prog *prog,
1396 #endif /* CONFIG_INET */
1398 enum bpf_text_poke_type {
1403 int bpf_arch_text_poke(void *ip, enum bpf_text_poke_type t,
1404 void *addr1, void *addr2);
1406 #endif /* _LINUX_BPF_H */