Commit | Line | Data |
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99c55f7d AS |
1 | /* Copyright (c) 2011-2014 PLUMgrid, http://plumgrid.com |
2 | * | |
3 | * This program is free software; you can redistribute it and/or | |
4 | * modify it under the terms of version 2 of the GNU General Public | |
5 | * License as published by the Free Software Foundation. | |
6 | */ | |
7 | #ifndef _LINUX_BPF_H | |
8 | #define _LINUX_BPF_H 1 | |
9 | ||
10 | #include <uapi/linux/bpf.h> | |
74451e66 | 11 | |
99c55f7d | 12 | #include <linux/workqueue.h> |
db20fd2b | 13 | #include <linux/file.h> |
b121d1e7 | 14 | #include <linux/percpu.h> |
002245cc | 15 | #include <linux/err.h> |
74451e66 | 16 | #include <linux/rbtree_latch.h> |
d6e1e46f | 17 | #include <linux/numa.h> |
ab3f0063 | 18 | #include <linux/wait.h> |
99c55f7d | 19 | |
cae1927c | 20 | struct bpf_verifier_env; |
3b1efb19 | 21 | struct perf_event; |
174a79ff | 22 | struct bpf_prog; |
99c55f7d | 23 | struct bpf_map; |
4f738adb | 24 | struct sock; |
a26ca7c9 | 25 | struct seq_file; |
e8d2bec0 | 26 | struct btf_type; |
99c55f7d AS |
27 | |
28 | /* map is generic key/value storage optionally accesible by eBPF programs */ | |
29 | struct bpf_map_ops { | |
30 | /* funcs callable from userspace (via syscall) */ | |
1110f3a9 | 31 | int (*map_alloc_check)(union bpf_attr *attr); |
99c55f7d | 32 | struct bpf_map *(*map_alloc)(union bpf_attr *attr); |
61d1b6a4 DB |
33 | void (*map_release)(struct bpf_map *map, struct file *map_file); |
34 | void (*map_free)(struct bpf_map *map); | |
db20fd2b | 35 | int (*map_get_next_key)(struct bpf_map *map, void *key, void *next_key); |
ba6b8de4 | 36 | void (*map_release_uref)(struct bpf_map *map); |
db20fd2b AS |
37 | |
38 | /* funcs callable from userspace and from eBPF programs */ | |
39 | void *(*map_lookup_elem)(struct bpf_map *map, void *key); | |
3274f520 | 40 | int (*map_update_elem)(struct bpf_map *map, void *key, void *value, u64 flags); |
db20fd2b | 41 | int (*map_delete_elem)(struct bpf_map *map, void *key); |
f1a2e44a MV |
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); | |
2a36f0b9 WN |
45 | |
46 | /* funcs called by prog_array and perf_event_array map */ | |
d056a788 DB |
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); | |
81ed18ab | 50 | u32 (*map_gen_lookup)(struct bpf_map *map, struct bpf_insn *insn_buf); |
14dc6f04 | 51 | u32 (*map_fd_sys_lookup_elem)(void *ptr); |
a26ca7c9 MKL |
52 | void (*map_seq_show_elem)(struct bpf_map *map, void *key, |
53 | struct seq_file *m); | |
e8d2bec0 DB |
54 | int (*map_check_btf)(const struct bpf_map *map, |
55 | const struct btf_type *key_type, | |
56 | const struct btf_type *value_type); | |
99c55f7d AS |
57 | }; |
58 | ||
59 | struct bpf_map { | |
a26ca7c9 | 60 | /* The first two cachelines with read-mostly members of which some |
be95a845 DB |
61 | * are also accessed in fast-path (e.g. ops, max_entries). |
62 | */ | |
63 | const struct bpf_map_ops *ops ____cacheline_aligned; | |
64 | struct bpf_map *inner_map_meta; | |
65 | #ifdef CONFIG_SECURITY | |
66 | void *security; | |
67 | #endif | |
99c55f7d AS |
68 | enum bpf_map_type map_type; |
69 | u32 key_size; | |
70 | u32 value_size; | |
71 | u32 max_entries; | |
6c905981 | 72 | u32 map_flags; |
aaac3ba9 | 73 | u32 pages; |
f3f1c054 | 74 | u32 id; |
96eabe7a | 75 | int numa_node; |
9b2cf328 MKL |
76 | u32 btf_key_type_id; |
77 | u32 btf_value_type_id; | |
a26ca7c9 | 78 | struct btf *btf; |
b2157399 | 79 | bool unpriv_array; |
a26ca7c9 | 80 | /* 55 bytes hole */ |
be95a845 | 81 | |
a26ca7c9 | 82 | /* The 3rd and 4th cacheline with misc members to avoid false sharing |
be95a845 DB |
83 | * particularly with refcounting. |
84 | */ | |
85 | struct user_struct *user ____cacheline_aligned; | |
86 | atomic_t refcnt; | |
c9da161c | 87 | atomic_t usercnt; |
be95a845 | 88 | struct work_struct work; |
067cae47 | 89 | char name[BPF_OBJ_NAME_LEN]; |
99c55f7d AS |
90 | }; |
91 | ||
602144c2 | 92 | struct bpf_offload_dev; |
a3884572 JK |
93 | struct bpf_offloaded_map; |
94 | ||
95 | struct bpf_map_dev_ops { | |
96 | int (*map_get_next_key)(struct bpf_offloaded_map *map, | |
97 | void *key, void *next_key); | |
98 | int (*map_lookup_elem)(struct bpf_offloaded_map *map, | |
99 | void *key, void *value); | |
100 | int (*map_update_elem)(struct bpf_offloaded_map *map, | |
101 | void *key, void *value, u64 flags); | |
102 | int (*map_delete_elem)(struct bpf_offloaded_map *map, void *key); | |
103 | }; | |
104 | ||
105 | struct bpf_offloaded_map { | |
106 | struct bpf_map map; | |
107 | struct net_device *netdev; | |
108 | const struct bpf_map_dev_ops *dev_ops; | |
109 | void *dev_priv; | |
110 | struct list_head offloads; | |
111 | }; | |
112 | ||
113 | static inline struct bpf_offloaded_map *map_to_offmap(struct bpf_map *map) | |
114 | { | |
115 | return container_of(map, struct bpf_offloaded_map, map); | |
116 | } | |
117 | ||
0cd3cbed JK |
118 | static inline bool bpf_map_offload_neutral(const struct bpf_map *map) |
119 | { | |
120 | return map->map_type == BPF_MAP_TYPE_PERF_EVENT_ARRAY; | |
121 | } | |
122 | ||
a26ca7c9 MKL |
123 | static inline bool bpf_map_support_seq_show(const struct bpf_map *map) |
124 | { | |
e8d2bec0 | 125 | return map->btf && map->ops->map_seq_show_elem; |
a26ca7c9 MKL |
126 | } |
127 | ||
e8d2bec0 DB |
128 | int map_check_no_btf(const struct bpf_map *map, |
129 | const struct btf_type *key_type, | |
130 | const struct btf_type *value_type); | |
131 | ||
a3884572 JK |
132 | extern const struct bpf_map_ops bpf_map_offload_ops; |
133 | ||
17a52670 AS |
134 | /* function argument constraints */ |
135 | enum bpf_arg_type { | |
80f1d68c | 136 | ARG_DONTCARE = 0, /* unused argument in helper function */ |
17a52670 AS |
137 | |
138 | /* the following constraints used to prototype | |
139 | * bpf_map_lookup/update/delete_elem() functions | |
140 | */ | |
141 | ARG_CONST_MAP_PTR, /* const argument used as pointer to bpf_map */ | |
142 | ARG_PTR_TO_MAP_KEY, /* pointer to stack used as map key */ | |
143 | ARG_PTR_TO_MAP_VALUE, /* pointer to stack used as map value */ | |
2ea864c5 | 144 | ARG_PTR_TO_UNINIT_MAP_VALUE, /* pointer to valid memory used to store a map value */ |
17a52670 AS |
145 | |
146 | /* the following constraints used to prototype bpf_memcmp() and other | |
147 | * functions that access data on eBPF program stack | |
148 | */ | |
39f19ebb | 149 | ARG_PTR_TO_MEM, /* pointer to valid memory (stack, packet, map value) */ |
db1ac496 | 150 | ARG_PTR_TO_MEM_OR_NULL, /* pointer to valid memory or NULL */ |
39f19ebb AS |
151 | ARG_PTR_TO_UNINIT_MEM, /* pointer to memory does not need to be initialized, |
152 | * helper function must fill all bytes or clear | |
153 | * them in error case. | |
435faee1 DB |
154 | */ |
155 | ||
39f19ebb AS |
156 | ARG_CONST_SIZE, /* number of bytes accessed from memory */ |
157 | ARG_CONST_SIZE_OR_ZERO, /* number of bytes accessed from memory or 0 */ | |
80f1d68c | 158 | |
608cd71a | 159 | ARG_PTR_TO_CTX, /* pointer to context */ |
80f1d68c | 160 | ARG_ANYTHING, /* any (initialized) argument is ok */ |
c64b7983 | 161 | ARG_PTR_TO_SOCKET, /* pointer to bpf_sock */ |
17a52670 AS |
162 | }; |
163 | ||
164 | /* type of values returned from helper functions */ | |
165 | enum bpf_return_type { | |
166 | RET_INTEGER, /* function returns integer */ | |
167 | RET_VOID, /* function doesn't return anything */ | |
3e6a4b3e | 168 | RET_PTR_TO_MAP_VALUE, /* returns a pointer to map elem value */ |
17a52670 | 169 | RET_PTR_TO_MAP_VALUE_OR_NULL, /* returns a pointer to map elem value or NULL */ |
c64b7983 | 170 | RET_PTR_TO_SOCKET_OR_NULL, /* returns a pointer to a socket or NULL */ |
17a52670 AS |
171 | }; |
172 | ||
09756af4 AS |
173 | /* eBPF function prototype used by verifier to allow BPF_CALLs from eBPF programs |
174 | * to in-kernel helper functions and for adjusting imm32 field in BPF_CALL | |
175 | * instructions after verifying | |
176 | */ | |
177 | struct bpf_func_proto { | |
178 | u64 (*func)(u64 r1, u64 r2, u64 r3, u64 r4, u64 r5); | |
179 | bool gpl_only; | |
36bbef52 | 180 | bool pkt_access; |
17a52670 AS |
181 | enum bpf_return_type ret_type; |
182 | enum bpf_arg_type arg1_type; | |
183 | enum bpf_arg_type arg2_type; | |
184 | enum bpf_arg_type arg3_type; | |
185 | enum bpf_arg_type arg4_type; | |
186 | enum bpf_arg_type arg5_type; | |
187 | }; | |
188 | ||
189 | /* bpf_context is intentionally undefined structure. Pointer to bpf_context is | |
190 | * the first argument to eBPF programs. | |
191 | * For socket filters: 'struct bpf_context *' == 'struct sk_buff *' | |
192 | */ | |
193 | struct bpf_context; | |
194 | ||
195 | enum bpf_access_type { | |
196 | BPF_READ = 1, | |
197 | BPF_WRITE = 2 | |
09756af4 AS |
198 | }; |
199 | ||
19de99f7 | 200 | /* types of values stored in eBPF registers */ |
f1174f77 EC |
201 | /* Pointer types represent: |
202 | * pointer | |
203 | * pointer + imm | |
204 | * pointer + (u16) var | |
205 | * pointer + (u16) var + imm | |
206 | * if (range > 0) then [ptr, ptr + range - off) is safe to access | |
207 | * if (id > 0) means that some 'var' was added | |
208 | * if (off > 0) means that 'imm' was added | |
209 | */ | |
19de99f7 AS |
210 | enum bpf_reg_type { |
211 | NOT_INIT = 0, /* nothing was written into register */ | |
f1174f77 | 212 | SCALAR_VALUE, /* reg doesn't contain a valid pointer */ |
19de99f7 AS |
213 | PTR_TO_CTX, /* reg points to bpf_context */ |
214 | CONST_PTR_TO_MAP, /* reg points to struct bpf_map */ | |
215 | PTR_TO_MAP_VALUE, /* reg points to map element value */ | |
216 | PTR_TO_MAP_VALUE_OR_NULL,/* points to map elem value or NULL */ | |
f1174f77 | 217 | PTR_TO_STACK, /* reg == frame_pointer + offset */ |
de8f3a83 | 218 | PTR_TO_PACKET_META, /* skb->data - meta_len */ |
f1174f77 | 219 | PTR_TO_PACKET, /* reg points to skb->data */ |
19de99f7 | 220 | PTR_TO_PACKET_END, /* skb->data + headlen */ |
d58e468b | 221 | PTR_TO_FLOW_KEYS, /* reg points to bpf_flow_keys */ |
c64b7983 JS |
222 | PTR_TO_SOCKET, /* reg points to struct bpf_sock */ |
223 | PTR_TO_SOCKET_OR_NULL, /* reg points to struct bpf_sock or NULL */ | |
19de99f7 AS |
224 | }; |
225 | ||
23994631 YS |
226 | /* The information passed from prog-specific *_is_valid_access |
227 | * back to the verifier. | |
228 | */ | |
229 | struct bpf_insn_access_aux { | |
230 | enum bpf_reg_type reg_type; | |
231 | int ctx_field_size; | |
23994631 YS |
232 | }; |
233 | ||
f96da094 DB |
234 | static inline void |
235 | bpf_ctx_record_field_size(struct bpf_insn_access_aux *aux, u32 size) | |
236 | { | |
237 | aux->ctx_field_size = size; | |
238 | } | |
239 | ||
7de16e3a JK |
240 | struct bpf_prog_ops { |
241 | int (*test_run)(struct bpf_prog *prog, const union bpf_attr *kattr, | |
242 | union bpf_attr __user *uattr); | |
243 | }; | |
244 | ||
09756af4 AS |
245 | struct bpf_verifier_ops { |
246 | /* return eBPF function prototype for verification */ | |
5e43f899 AI |
247 | const struct bpf_func_proto * |
248 | (*get_func_proto)(enum bpf_func_id func_id, | |
249 | const struct bpf_prog *prog); | |
17a52670 AS |
250 | |
251 | /* return true if 'size' wide access at offset 'off' within bpf_context | |
252 | * with 'type' (read or write) is allowed | |
253 | */ | |
19de99f7 | 254 | bool (*is_valid_access)(int off, int size, enum bpf_access_type type, |
5e43f899 | 255 | const struct bpf_prog *prog, |
23994631 | 256 | struct bpf_insn_access_aux *info); |
36bbef52 DB |
257 | int (*gen_prologue)(struct bpf_insn *insn, bool direct_write, |
258 | const struct bpf_prog *prog); | |
e0cea7ce DB |
259 | int (*gen_ld_abs)(const struct bpf_insn *orig, |
260 | struct bpf_insn *insn_buf); | |
6b8cc1d1 DB |
261 | u32 (*convert_ctx_access)(enum bpf_access_type type, |
262 | const struct bpf_insn *src, | |
263 | struct bpf_insn *dst, | |
f96da094 | 264 | struct bpf_prog *prog, u32 *target_size); |
09756af4 AS |
265 | }; |
266 | ||
cae1927c JK |
267 | struct bpf_prog_offload_ops { |
268 | int (*insn_hook)(struct bpf_verifier_env *env, | |
269 | int insn_idx, int prev_insn_idx); | |
c941ce9c | 270 | int (*finalize)(struct bpf_verifier_env *env); |
00db12c3 | 271 | int (*prepare)(struct net_device *netdev, struct bpf_verifier_env *env); |
b07ade27 | 272 | int (*translate)(struct net_device *netdev, struct bpf_prog *prog); |
cae1927c JK |
273 | }; |
274 | ||
0a9c1991 | 275 | struct bpf_prog_offload { |
ab3f0063 JK |
276 | struct bpf_prog *prog; |
277 | struct net_device *netdev; | |
341b3e7b | 278 | struct bpf_offload_dev *offdev; |
ab3f0063 JK |
279 | void *dev_priv; |
280 | struct list_head offloads; | |
281 | bool dev_state; | |
fcfb126d JW |
282 | void *jited_image; |
283 | u32 jited_len; | |
ab3f0063 JK |
284 | }; |
285 | ||
8bad74f9 RG |
286 | enum bpf_cgroup_storage_type { |
287 | BPF_CGROUP_STORAGE_SHARED, | |
b741f163 | 288 | BPF_CGROUP_STORAGE_PERCPU, |
8bad74f9 RG |
289 | __BPF_CGROUP_STORAGE_MAX |
290 | }; | |
291 | ||
292 | #define MAX_BPF_CGROUP_STORAGE_TYPE __BPF_CGROUP_STORAGE_MAX | |
293 | ||
09756af4 AS |
294 | struct bpf_prog_aux { |
295 | atomic_t refcnt; | |
24701ece | 296 | u32 used_map_cnt; |
32bbe007 | 297 | u32 max_ctx_offset; |
e647815a | 298 | u32 max_pkt_offset; |
8726679a | 299 | u32 stack_depth; |
dc4bb0e2 | 300 | u32 id; |
1c2a088a | 301 | u32 func_cnt; |
9a18eedb | 302 | bool offload_requested; |
1c2a088a AS |
303 | struct bpf_prog **func; |
304 | void *jit_data; /* JIT specific data. arch dependent */ | |
74451e66 DB |
305 | struct latch_tree_node ksym_tnode; |
306 | struct list_head ksym_lnode; | |
7de16e3a | 307 | const struct bpf_prog_ops *ops; |
09756af4 | 308 | struct bpf_map **used_maps; |
09756af4 | 309 | struct bpf_prog *prog; |
aaac3ba9 | 310 | struct user_struct *user; |
cb4d2b3f | 311 | u64 load_time; /* ns since boottime */ |
8bad74f9 | 312 | struct bpf_map *cgroup_storage[MAX_BPF_CGROUP_STORAGE_TYPE]; |
067cae47 | 313 | char name[BPF_OBJ_NAME_LEN]; |
afdb09c7 CF |
314 | #ifdef CONFIG_SECURITY |
315 | void *security; | |
316 | #endif | |
0a9c1991 | 317 | struct bpf_prog_offload *offload; |
abf2e7d6 AS |
318 | union { |
319 | struct work_struct work; | |
320 | struct rcu_head rcu; | |
321 | }; | |
09756af4 AS |
322 | }; |
323 | ||
04fd61ab AS |
324 | struct bpf_array { |
325 | struct bpf_map map; | |
326 | u32 elem_size; | |
b2157399 | 327 | u32 index_mask; |
04fd61ab AS |
328 | /* 'ownership' of prog_array is claimed by the first program that |
329 | * is going to use this map or by the first program which FD is stored | |
330 | * in the map to make sure that all callers and callees have the same | |
331 | * prog_type and JITed flag | |
332 | */ | |
333 | enum bpf_prog_type owner_prog_type; | |
334 | bool owner_jited; | |
335 | union { | |
336 | char value[0] __aligned(8); | |
2a36f0b9 | 337 | void *ptrs[0] __aligned(8); |
a10423b8 | 338 | void __percpu *pptrs[0] __aligned(8); |
04fd61ab AS |
339 | }; |
340 | }; | |
3b1efb19 | 341 | |
04fd61ab AS |
342 | #define MAX_TAIL_CALL_CNT 32 |
343 | ||
3b1efb19 DB |
344 | struct bpf_event_entry { |
345 | struct perf_event *event; | |
346 | struct file *perf_file; | |
347 | struct file *map_file; | |
348 | struct rcu_head rcu; | |
349 | }; | |
350 | ||
04fd61ab | 351 | bool bpf_prog_array_compatible(struct bpf_array *array, const struct bpf_prog *fp); |
f1f7714e | 352 | int bpf_prog_calc_tag(struct bpf_prog *fp); |
bd570ff9 | 353 | |
0756ea3e | 354 | const struct bpf_func_proto *bpf_get_trace_printk_proto(void); |
555c8a86 DB |
355 | |
356 | typedef unsigned long (*bpf_ctx_copy_t)(void *dst, const void *src, | |
aa7145c1 | 357 | unsigned long off, unsigned long len); |
c64b7983 JS |
358 | typedef u32 (*bpf_convert_ctx_access_t)(enum bpf_access_type type, |
359 | const struct bpf_insn *src, | |
360 | struct bpf_insn *dst, | |
361 | struct bpf_prog *prog, | |
362 | u32 *target_size); | |
555c8a86 DB |
363 | |
364 | u64 bpf_event_output(struct bpf_map *map, u64 flags, void *meta, u64 meta_size, | |
365 | void *ctx, u64 ctx_size, bpf_ctx_copy_t ctx_copy); | |
04fd61ab | 366 | |
1cf1cae9 AS |
367 | int bpf_prog_test_run_xdp(struct bpf_prog *prog, const union bpf_attr *kattr, |
368 | union bpf_attr __user *uattr); | |
369 | int bpf_prog_test_run_skb(struct bpf_prog *prog, const union bpf_attr *kattr, | |
370 | union bpf_attr __user *uattr); | |
371 | ||
324bda9e AS |
372 | /* an array of programs to be executed under rcu_lock. |
373 | * | |
374 | * Typical usage: | |
375 | * ret = BPF_PROG_RUN_ARRAY(&bpf_prog_array, ctx, BPF_PROG_RUN); | |
376 | * | |
377 | * the structure returned by bpf_prog_array_alloc() should be populated | |
378 | * with program pointers and the last pointer must be NULL. | |
379 | * The user has to keep refcnt on the program and make sure the program | |
380 | * is removed from the array before bpf_prog_put(). | |
381 | * The 'struct bpf_prog_array *' should only be replaced with xchg() | |
382 | * since other cpus are walking the array of pointers in parallel. | |
383 | */ | |
394e40a2 RG |
384 | struct bpf_prog_array_item { |
385 | struct bpf_prog *prog; | |
8bad74f9 | 386 | struct bpf_cgroup_storage *cgroup_storage[MAX_BPF_CGROUP_STORAGE_TYPE]; |
394e40a2 RG |
387 | }; |
388 | ||
324bda9e AS |
389 | struct bpf_prog_array { |
390 | struct rcu_head rcu; | |
394e40a2 | 391 | struct bpf_prog_array_item items[0]; |
324bda9e AS |
392 | }; |
393 | ||
d29ab6e1 | 394 | struct bpf_prog_array *bpf_prog_array_alloc(u32 prog_cnt, gfp_t flags); |
324bda9e | 395 | void bpf_prog_array_free(struct bpf_prog_array __rcu *progs); |
468e2f64 AS |
396 | int bpf_prog_array_length(struct bpf_prog_array __rcu *progs); |
397 | int bpf_prog_array_copy_to_user(struct bpf_prog_array __rcu *progs, | |
398 | __u32 __user *prog_ids, u32 cnt); | |
324bda9e | 399 | |
e87c6bc3 YS |
400 | void bpf_prog_array_delete_safe(struct bpf_prog_array __rcu *progs, |
401 | struct bpf_prog *old_prog); | |
f371b304 | 402 | int bpf_prog_array_copy_info(struct bpf_prog_array __rcu *array, |
3a38bb98 YS |
403 | u32 *prog_ids, u32 request_cnt, |
404 | u32 *prog_cnt); | |
e87c6bc3 YS |
405 | int bpf_prog_array_copy(struct bpf_prog_array __rcu *old_array, |
406 | struct bpf_prog *exclude_prog, | |
407 | struct bpf_prog *include_prog, | |
408 | struct bpf_prog_array **new_array); | |
409 | ||
410 | #define __BPF_PROG_RUN_ARRAY(array, ctx, func, check_non_null) \ | |
324bda9e | 411 | ({ \ |
394e40a2 RG |
412 | struct bpf_prog_array_item *_item; \ |
413 | struct bpf_prog *_prog; \ | |
e87c6bc3 | 414 | struct bpf_prog_array *_array; \ |
324bda9e | 415 | u32 _ret = 1; \ |
6899b32b | 416 | preempt_disable(); \ |
324bda9e | 417 | rcu_read_lock(); \ |
e87c6bc3 YS |
418 | _array = rcu_dereference(array); \ |
419 | if (unlikely(check_non_null && !_array))\ | |
420 | goto _out; \ | |
394e40a2 RG |
421 | _item = &_array->items[0]; \ |
422 | while ((_prog = READ_ONCE(_item->prog))) { \ | |
423 | bpf_cgroup_storage_set(_item->cgroup_storage); \ | |
424 | _ret &= func(_prog, ctx); \ | |
425 | _item++; \ | |
e87c6bc3 YS |
426 | } \ |
427 | _out: \ | |
324bda9e | 428 | rcu_read_unlock(); \ |
6899b32b | 429 | preempt_enable_no_resched(); \ |
324bda9e AS |
430 | _ret; \ |
431 | }) | |
432 | ||
e87c6bc3 YS |
433 | #define BPF_PROG_RUN_ARRAY(array, ctx, func) \ |
434 | __BPF_PROG_RUN_ARRAY(array, ctx, func, false) | |
435 | ||
436 | #define BPF_PROG_RUN_ARRAY_CHECK(array, ctx, func) \ | |
437 | __BPF_PROG_RUN_ARRAY(array, ctx, func, true) | |
438 | ||
89aa0758 | 439 | #ifdef CONFIG_BPF_SYSCALL |
b121d1e7 AS |
440 | DECLARE_PER_CPU(int, bpf_prog_active); |
441 | ||
f66e448c CF |
442 | extern const struct file_operations bpf_map_fops; |
443 | extern const struct file_operations bpf_prog_fops; | |
444 | ||
7de16e3a JK |
445 | #define BPF_PROG_TYPE(_id, _name) \ |
446 | extern const struct bpf_prog_ops _name ## _prog_ops; \ | |
447 | extern const struct bpf_verifier_ops _name ## _verifier_ops; | |
40077e0c JB |
448 | #define BPF_MAP_TYPE(_id, _ops) \ |
449 | extern const struct bpf_map_ops _ops; | |
be9370a7 JB |
450 | #include <linux/bpf_types.h> |
451 | #undef BPF_PROG_TYPE | |
40077e0c | 452 | #undef BPF_MAP_TYPE |
0fc174de | 453 | |
ab3f0063 | 454 | extern const struct bpf_prog_ops bpf_offload_prog_ops; |
4f9218aa JK |
455 | extern const struct bpf_verifier_ops tc_cls_act_analyzer_ops; |
456 | extern const struct bpf_verifier_ops xdp_analyzer_ops; | |
457 | ||
0fc174de | 458 | struct bpf_prog *bpf_prog_get(u32 ufd); |
248f346f | 459 | struct bpf_prog *bpf_prog_get_type_dev(u32 ufd, enum bpf_prog_type type, |
288b3de5 | 460 | bool attach_drv); |
6d67942d | 461 | struct bpf_prog * __must_check bpf_prog_add(struct bpf_prog *prog, int i); |
c540594f | 462 | void bpf_prog_sub(struct bpf_prog *prog, int i); |
6d67942d | 463 | struct bpf_prog * __must_check bpf_prog_inc(struct bpf_prog *prog); |
a6f6df69 | 464 | struct bpf_prog * __must_check bpf_prog_inc_not_zero(struct bpf_prog *prog); |
61e021f3 | 465 | void bpf_prog_put(struct bpf_prog *prog); |
5ccb071e DB |
466 | int __bpf_prog_charge(struct user_struct *user, u32 pages); |
467 | void __bpf_prog_uncharge(struct user_struct *user, u32 pages); | |
61e021f3 | 468 | |
ad8ad79f | 469 | void bpf_prog_free_id(struct bpf_prog *prog, bool do_idr_lock); |
a3884572 | 470 | void bpf_map_free_id(struct bpf_map *map, bool do_idr_lock); |
ad8ad79f | 471 | |
c9da161c | 472 | struct bpf_map *bpf_map_get_with_uref(u32 ufd); |
c2101297 | 473 | struct bpf_map *__bpf_map_get(struct fd f); |
6d67942d | 474 | struct bpf_map * __must_check bpf_map_inc(struct bpf_map *map, bool uref); |
c9da161c | 475 | void bpf_map_put_with_uref(struct bpf_map *map); |
61e021f3 | 476 | void bpf_map_put(struct bpf_map *map); |
6c905981 | 477 | int bpf_map_precharge_memlock(u32 pages); |
0a4c58f5 RG |
478 | int bpf_map_charge_memlock(struct bpf_map *map, u32 pages); |
479 | void bpf_map_uncharge_memlock(struct bpf_map *map, u32 pages); | |
96eabe7a | 480 | void *bpf_map_area_alloc(size_t size, int numa_node); |
d407bd25 | 481 | void bpf_map_area_free(void *base); |
bd475643 | 482 | void bpf_map_init_from_attr(struct bpf_map *map, union bpf_attr *attr); |
61e021f3 | 483 | |
1be7f75d AS |
484 | extern int sysctl_unprivileged_bpf_disabled; |
485 | ||
6e71b04a | 486 | int bpf_map_new_fd(struct bpf_map *map, int flags); |
b2197755 DB |
487 | int bpf_prog_new_fd(struct bpf_prog *prog); |
488 | ||
489 | int bpf_obj_pin_user(u32 ufd, const char __user *pathname); | |
6e71b04a | 490 | int bpf_obj_get_user(const char __user *pathname, int flags); |
b2197755 | 491 | |
15a07b33 AS |
492 | int bpf_percpu_hash_copy(struct bpf_map *map, void *key, void *value); |
493 | int bpf_percpu_array_copy(struct bpf_map *map, void *key, void *value); | |
494 | int bpf_percpu_hash_update(struct bpf_map *map, void *key, void *value, | |
495 | u64 flags); | |
496 | int bpf_percpu_array_update(struct bpf_map *map, void *key, void *value, | |
497 | u64 flags); | |
d056a788 | 498 | |
557c0c6e | 499 | int bpf_stackmap_copy(struct bpf_map *map, void *key, void *value); |
15a07b33 | 500 | |
d056a788 DB |
501 | int bpf_fd_array_map_update_elem(struct bpf_map *map, struct file *map_file, |
502 | void *key, void *value, u64 map_flags); | |
14dc6f04 | 503 | int bpf_fd_array_map_lookup_elem(struct bpf_map *map, void *key, u32 *value); |
bcc6b1b7 MKL |
504 | int bpf_fd_htab_map_update_elem(struct bpf_map *map, struct file *map_file, |
505 | void *key, void *value, u64 map_flags); | |
14dc6f04 | 506 | int bpf_fd_htab_map_lookup_elem(struct bpf_map *map, void *key, u32 *value); |
d056a788 | 507 | |
6e71b04a | 508 | int bpf_get_file_flag(int flags); |
dcab51f1 MKL |
509 | int bpf_check_uarg_tail_zero(void __user *uaddr, size_t expected_size, |
510 | size_t actual_size); | |
6e71b04a | 511 | |
15a07b33 AS |
512 | /* memcpy that is used with 8-byte aligned pointers, power-of-8 size and |
513 | * forced to use 'long' read/writes to try to atomically copy long counters. | |
514 | * Best-effort only. No barriers here, since it _will_ race with concurrent | |
515 | * updates from BPF programs. Called from bpf syscall and mostly used with | |
516 | * size 8 or 16 bytes, so ask compiler to inline it. | |
517 | */ | |
518 | static inline void bpf_long_memcpy(void *dst, const void *src, u32 size) | |
519 | { | |
520 | const long *lsrc = src; | |
521 | long *ldst = dst; | |
522 | ||
523 | size /= sizeof(long); | |
524 | while (size--) | |
525 | *ldst++ = *lsrc++; | |
526 | } | |
527 | ||
61e021f3 | 528 | /* verify correctness of eBPF program */ |
9bac3d6d | 529 | int bpf_check(struct bpf_prog **fp, union bpf_attr *attr); |
1ea47e01 | 530 | void bpf_patch_call_args(struct bpf_insn *insn, u32 stack_depth); |
46f55cff JF |
531 | |
532 | /* Map specifics */ | |
67f29e07 | 533 | struct xdp_buff; |
6d5fc195 | 534 | struct sk_buff; |
67f29e07 JDB |
535 | |
536 | struct bpf_dtab_netdev *__dev_map_lookup_elem(struct bpf_map *map, u32 key); | |
46f55cff JF |
537 | void __dev_map_insert_ctx(struct bpf_map *map, u32 index); |
538 | void __dev_map_flush(struct bpf_map *map); | |
38edddb8 JDB |
539 | int dev_map_enqueue(struct bpf_dtab_netdev *dst, struct xdp_buff *xdp, |
540 | struct net_device *dev_rx); | |
6d5fc195 TM |
541 | int dev_map_generic_redirect(struct bpf_dtab_netdev *dst, struct sk_buff *skb, |
542 | struct bpf_prog *xdp_prog); | |
46f55cff | 543 | |
9c270af3 JDB |
544 | struct bpf_cpu_map_entry *__cpu_map_lookup_elem(struct bpf_map *map, u32 key); |
545 | void __cpu_map_insert_ctx(struct bpf_map *map, u32 index); | |
546 | void __cpu_map_flush(struct bpf_map *map); | |
9c270af3 JDB |
547 | int cpu_map_enqueue(struct bpf_cpu_map_entry *rcpu, struct xdp_buff *xdp, |
548 | struct net_device *dev_rx); | |
549 | ||
96eabe7a MKL |
550 | /* Return map's numa specified by userspace */ |
551 | static inline int bpf_map_attr_numa_node(const union bpf_attr *attr) | |
552 | { | |
553 | return (attr->map_flags & BPF_F_NUMA_NODE) ? | |
554 | attr->numa_node : NUMA_NO_NODE; | |
555 | } | |
556 | ||
040ee692 | 557 | struct bpf_prog *bpf_prog_get_type_path(const char *name, enum bpf_prog_type type); |
5dc4c4b7 | 558 | int array_map_alloc_check(union bpf_attr *attr); |
040ee692 | 559 | |
9c270af3 | 560 | #else /* !CONFIG_BPF_SYSCALL */ |
0fc174de DB |
561 | static inline struct bpf_prog *bpf_prog_get(u32 ufd) |
562 | { | |
563 | return ERR_PTR(-EOPNOTSUPP); | |
564 | } | |
565 | ||
248f346f JK |
566 | static inline struct bpf_prog *bpf_prog_get_type_dev(u32 ufd, |
567 | enum bpf_prog_type type, | |
288b3de5 | 568 | bool attach_drv) |
248f346f JK |
569 | { |
570 | return ERR_PTR(-EOPNOTSUPP); | |
571 | } | |
572 | ||
6d67942d DB |
573 | static inline struct bpf_prog * __must_check bpf_prog_add(struct bpf_prog *prog, |
574 | int i) | |
cc2e0b3f BB |
575 | { |
576 | return ERR_PTR(-EOPNOTSUPP); | |
577 | } | |
113214be | 578 | |
c540594f DB |
579 | static inline void bpf_prog_sub(struct bpf_prog *prog, int i) |
580 | { | |
581 | } | |
582 | ||
0fc174de DB |
583 | static inline void bpf_prog_put(struct bpf_prog *prog) |
584 | { | |
585 | } | |
6d67942d DB |
586 | |
587 | static inline struct bpf_prog * __must_check bpf_prog_inc(struct bpf_prog *prog) | |
aa6a5f3c AS |
588 | { |
589 | return ERR_PTR(-EOPNOTSUPP); | |
590 | } | |
5ccb071e | 591 | |
a6f6df69 JF |
592 | static inline struct bpf_prog *__must_check |
593 | bpf_prog_inc_not_zero(struct bpf_prog *prog) | |
594 | { | |
595 | return ERR_PTR(-EOPNOTSUPP); | |
596 | } | |
597 | ||
5ccb071e DB |
598 | static inline int __bpf_prog_charge(struct user_struct *user, u32 pages) |
599 | { | |
600 | return 0; | |
601 | } | |
602 | ||
603 | static inline void __bpf_prog_uncharge(struct user_struct *user, u32 pages) | |
604 | { | |
605 | } | |
46f55cff | 606 | |
6e71b04a | 607 | static inline int bpf_obj_get_user(const char __user *pathname, int flags) |
98589a09 SL |
608 | { |
609 | return -EOPNOTSUPP; | |
610 | } | |
611 | ||
46f55cff JF |
612 | static inline struct net_device *__dev_map_lookup_elem(struct bpf_map *map, |
613 | u32 key) | |
614 | { | |
615 | return NULL; | |
616 | } | |
617 | ||
618 | static inline void __dev_map_insert_ctx(struct bpf_map *map, u32 index) | |
619 | { | |
620 | } | |
621 | ||
622 | static inline void __dev_map_flush(struct bpf_map *map) | |
623 | { | |
624 | } | |
9c270af3 | 625 | |
67f29e07 JDB |
626 | struct xdp_buff; |
627 | struct bpf_dtab_netdev; | |
628 | ||
629 | static inline | |
38edddb8 JDB |
630 | int dev_map_enqueue(struct bpf_dtab_netdev *dst, struct xdp_buff *xdp, |
631 | struct net_device *dev_rx) | |
67f29e07 JDB |
632 | { |
633 | return 0; | |
634 | } | |
635 | ||
6d5fc195 TM |
636 | struct sk_buff; |
637 | ||
638 | static inline int dev_map_generic_redirect(struct bpf_dtab_netdev *dst, | |
639 | struct sk_buff *skb, | |
640 | struct bpf_prog *xdp_prog) | |
641 | { | |
642 | return 0; | |
643 | } | |
644 | ||
9c270af3 JDB |
645 | static inline |
646 | struct bpf_cpu_map_entry *__cpu_map_lookup_elem(struct bpf_map *map, u32 key) | |
647 | { | |
648 | return NULL; | |
649 | } | |
650 | ||
651 | static inline void __cpu_map_insert_ctx(struct bpf_map *map, u32 index) | |
652 | { | |
653 | } | |
654 | ||
655 | static inline void __cpu_map_flush(struct bpf_map *map) | |
656 | { | |
657 | } | |
658 | ||
9c270af3 JDB |
659 | static inline int cpu_map_enqueue(struct bpf_cpu_map_entry *rcpu, |
660 | struct xdp_buff *xdp, | |
661 | struct net_device *dev_rx) | |
662 | { | |
663 | return 0; | |
664 | } | |
040ee692 AV |
665 | |
666 | static inline struct bpf_prog *bpf_prog_get_type_path(const char *name, | |
667 | enum bpf_prog_type type) | |
668 | { | |
669 | return ERR_PTR(-EOPNOTSUPP); | |
670 | } | |
61e021f3 | 671 | #endif /* CONFIG_BPF_SYSCALL */ |
09756af4 | 672 | |
479321e9 JK |
673 | static inline struct bpf_prog *bpf_prog_get_type(u32 ufd, |
674 | enum bpf_prog_type type) | |
675 | { | |
676 | return bpf_prog_get_type_dev(ufd, type, false); | |
677 | } | |
678 | ||
040ee692 AV |
679 | bool bpf_prog_get_ok(struct bpf_prog *, enum bpf_prog_type *, bool); |
680 | ||
ab3f0063 JK |
681 | int bpf_prog_offload_compile(struct bpf_prog *prog); |
682 | void bpf_prog_offload_destroy(struct bpf_prog *prog); | |
675fc275 JK |
683 | int bpf_prog_offload_info_fill(struct bpf_prog_info *info, |
684 | struct bpf_prog *prog); | |
ab3f0063 | 685 | |
52775b33 JK |
686 | int bpf_map_offload_info_fill(struct bpf_map_info *info, struct bpf_map *map); |
687 | ||
a3884572 JK |
688 | int bpf_map_offload_lookup_elem(struct bpf_map *map, void *key, void *value); |
689 | int bpf_map_offload_update_elem(struct bpf_map *map, | |
690 | void *key, void *value, u64 flags); | |
691 | int bpf_map_offload_delete_elem(struct bpf_map *map, void *key); | |
692 | int bpf_map_offload_get_next_key(struct bpf_map *map, | |
693 | void *key, void *next_key); | |
694 | ||
09728266 | 695 | bool bpf_offload_prog_map_match(struct bpf_prog *prog, struct bpf_map *map); |
a3884572 | 696 | |
1385d755 QM |
697 | struct bpf_offload_dev * |
698 | bpf_offload_dev_create(const struct bpf_prog_offload_ops *ops); | |
602144c2 JK |
699 | void bpf_offload_dev_destroy(struct bpf_offload_dev *offdev); |
700 | int bpf_offload_dev_netdev_register(struct bpf_offload_dev *offdev, | |
701 | struct net_device *netdev); | |
702 | void bpf_offload_dev_netdev_unregister(struct bpf_offload_dev *offdev, | |
703 | struct net_device *netdev); | |
fd4f227d | 704 | bool bpf_offload_dev_match(struct bpf_prog *prog, struct net_device *netdev); |
9fd7c555 | 705 | |
ab3f0063 JK |
706 | #if defined(CONFIG_NET) && defined(CONFIG_BPF_SYSCALL) |
707 | int bpf_prog_offload_init(struct bpf_prog *prog, union bpf_attr *attr); | |
708 | ||
0d830032 | 709 | static inline bool bpf_prog_is_dev_bound(const struct bpf_prog_aux *aux) |
ab3f0063 | 710 | { |
9a18eedb | 711 | return aux->offload_requested; |
ab3f0063 | 712 | } |
a3884572 JK |
713 | |
714 | static inline bool bpf_map_is_dev_bound(struct bpf_map *map) | |
715 | { | |
716 | return unlikely(map->ops == &bpf_map_offload_ops); | |
717 | } | |
718 | ||
719 | struct bpf_map *bpf_map_offload_map_alloc(union bpf_attr *attr); | |
720 | void bpf_map_offload_map_free(struct bpf_map *map); | |
ab3f0063 JK |
721 | #else |
722 | static inline int bpf_prog_offload_init(struct bpf_prog *prog, | |
723 | union bpf_attr *attr) | |
724 | { | |
725 | return -EOPNOTSUPP; | |
726 | } | |
727 | ||
728 | static inline bool bpf_prog_is_dev_bound(struct bpf_prog_aux *aux) | |
729 | { | |
730 | return false; | |
731 | } | |
a3884572 JK |
732 | |
733 | static inline bool bpf_map_is_dev_bound(struct bpf_map *map) | |
734 | { | |
735 | return false; | |
736 | } | |
737 | ||
738 | static inline struct bpf_map *bpf_map_offload_map_alloc(union bpf_attr *attr) | |
739 | { | |
740 | return ERR_PTR(-EOPNOTSUPP); | |
741 | } | |
742 | ||
743 | static inline void bpf_map_offload_map_free(struct bpf_map *map) | |
744 | { | |
745 | } | |
ab3f0063 JK |
746 | #endif /* CONFIG_NET && CONFIG_BPF_SYSCALL */ |
747 | ||
604326b4 DB |
748 | #if defined(CONFIG_BPF_STREAM_PARSER) |
749 | int sock_map_prog_update(struct bpf_map *map, struct bpf_prog *prog, u32 which); | |
750 | int sock_map_get_from_fd(const union bpf_attr *attr, struct bpf_prog *prog); | |
6bdc9c4c | 751 | #else |
604326b4 DB |
752 | static inline int sock_map_prog_update(struct bpf_map *map, |
753 | struct bpf_prog *prog, u32 which) | |
464bc0fd JF |
754 | { |
755 | return -EOPNOTSUPP; | |
756 | } | |
fdb5c453 | 757 | |
604326b4 DB |
758 | static inline int sock_map_get_from_fd(const union bpf_attr *attr, |
759 | struct bpf_prog *prog) | |
fdb5c453 SY |
760 | { |
761 | return -EINVAL; | |
762 | } | |
6bdc9c4c JF |
763 | #endif |
764 | ||
fbfc504a BT |
765 | #if defined(CONFIG_XDP_SOCKETS) |
766 | struct xdp_sock; | |
767 | struct xdp_sock *__xsk_map_lookup_elem(struct bpf_map *map, u32 key); | |
768 | int __xsk_map_redirect(struct bpf_map *map, struct xdp_buff *xdp, | |
769 | struct xdp_sock *xs); | |
770 | void __xsk_map_flush(struct bpf_map *map); | |
771 | #else | |
772 | struct xdp_sock; | |
773 | static inline struct xdp_sock *__xsk_map_lookup_elem(struct bpf_map *map, | |
774 | u32 key) | |
775 | { | |
776 | return NULL; | |
777 | } | |
778 | ||
779 | static inline int __xsk_map_redirect(struct bpf_map *map, struct xdp_buff *xdp, | |
780 | struct xdp_sock *xs) | |
781 | { | |
782 | return -EOPNOTSUPP; | |
783 | } | |
784 | ||
785 | static inline void __xsk_map_flush(struct bpf_map *map) | |
786 | { | |
787 | } | |
788 | #endif | |
789 | ||
5dc4c4b7 MKL |
790 | #if defined(CONFIG_INET) && defined(CONFIG_BPF_SYSCALL) |
791 | void bpf_sk_reuseport_detach(struct sock *sk); | |
792 | int bpf_fd_reuseport_array_lookup_elem(struct bpf_map *map, void *key, | |
793 | void *value); | |
794 | int bpf_fd_reuseport_array_update_elem(struct bpf_map *map, void *key, | |
795 | void *value, u64 map_flags); | |
796 | #else | |
797 | static inline void bpf_sk_reuseport_detach(struct sock *sk) | |
798 | { | |
799 | } | |
800 | ||
801 | #ifdef CONFIG_BPF_SYSCALL | |
802 | static inline int bpf_fd_reuseport_array_lookup_elem(struct bpf_map *map, | |
803 | void *key, void *value) | |
804 | { | |
805 | return -EOPNOTSUPP; | |
806 | } | |
807 | ||
808 | static inline int bpf_fd_reuseport_array_update_elem(struct bpf_map *map, | |
809 | void *key, void *value, | |
810 | u64 map_flags) | |
811 | { | |
812 | return -EOPNOTSUPP; | |
813 | } | |
814 | #endif /* CONFIG_BPF_SYSCALL */ | |
815 | #endif /* defined(CONFIG_INET) && defined(CONFIG_BPF_SYSCALL) */ | |
816 | ||
d0003ec0 | 817 | /* verifier prototypes for helper functions called from eBPF programs */ |
a2c83fff DB |
818 | extern const struct bpf_func_proto bpf_map_lookup_elem_proto; |
819 | extern const struct bpf_func_proto bpf_map_update_elem_proto; | |
820 | extern const struct bpf_func_proto bpf_map_delete_elem_proto; | |
f1a2e44a MV |
821 | extern const struct bpf_func_proto bpf_map_push_elem_proto; |
822 | extern const struct bpf_func_proto bpf_map_pop_elem_proto; | |
823 | extern const struct bpf_func_proto bpf_map_peek_elem_proto; | |
d0003ec0 | 824 | |
03e69b50 | 825 | extern const struct bpf_func_proto bpf_get_prandom_u32_proto; |
c04167ce | 826 | extern const struct bpf_func_proto bpf_get_smp_processor_id_proto; |
2d0e30c3 | 827 | extern const struct bpf_func_proto bpf_get_numa_node_id_proto; |
04fd61ab | 828 | extern const struct bpf_func_proto bpf_tail_call_proto; |
17ca8cbf | 829 | extern const struct bpf_func_proto bpf_ktime_get_ns_proto; |
ffeedafb AS |
830 | extern const struct bpf_func_proto bpf_get_current_pid_tgid_proto; |
831 | extern const struct bpf_func_proto bpf_get_current_uid_gid_proto; | |
832 | extern const struct bpf_func_proto bpf_get_current_comm_proto; | |
d5a3b1f6 | 833 | extern const struct bpf_func_proto bpf_get_stackid_proto; |
c195651e | 834 | extern const struct bpf_func_proto bpf_get_stack_proto; |
174a79ff | 835 | extern const struct bpf_func_proto bpf_sock_map_update_proto; |
81110384 | 836 | extern const struct bpf_func_proto bpf_sock_hash_update_proto; |
bf6fa2c8 | 837 | extern const struct bpf_func_proto bpf_get_current_cgroup_id_proto; |
604326b4 DB |
838 | extern const struct bpf_func_proto bpf_msg_redirect_hash_proto; |
839 | extern const struct bpf_func_proto bpf_msg_redirect_map_proto; | |
840 | extern const struct bpf_func_proto bpf_sk_redirect_hash_proto; | |
841 | extern const struct bpf_func_proto bpf_sk_redirect_map_proto; | |
03e69b50 | 842 | |
cd339431 RG |
843 | extern const struct bpf_func_proto bpf_get_local_storage_proto; |
844 | ||
3ad00405 DB |
845 | /* Shared helpers among cBPF and eBPF. */ |
846 | void bpf_user_rnd_init_once(void); | |
847 | u64 bpf_user_rnd_u32(u64 r1, u64 r2, u64 r3, u64 r4, u64 r5); | |
848 | ||
c64b7983 JS |
849 | #if defined(CONFIG_NET) |
850 | bool bpf_sock_is_valid_access(int off, int size, enum bpf_access_type type, | |
851 | struct bpf_insn_access_aux *info); | |
852 | u32 bpf_sock_convert_ctx_access(enum bpf_access_type type, | |
853 | const struct bpf_insn *si, | |
854 | struct bpf_insn *insn_buf, | |
855 | struct bpf_prog *prog, | |
856 | u32 *target_size); | |
857 | #else | |
858 | static inline bool bpf_sock_is_valid_access(int off, int size, | |
859 | enum bpf_access_type type, | |
860 | struct bpf_insn_access_aux *info) | |
861 | { | |
862 | return false; | |
863 | } | |
864 | static inline u32 bpf_sock_convert_ctx_access(enum bpf_access_type type, | |
865 | const struct bpf_insn *si, | |
866 | struct bpf_insn *insn_buf, | |
867 | struct bpf_prog *prog, | |
868 | u32 *target_size) | |
869 | { | |
870 | return 0; | |
871 | } | |
872 | #endif | |
873 | ||
99c55f7d | 874 | #endif /* _LINUX_BPF_H */ |