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; |
1b2b234b | 26 | struct btf; |
e8d2bec0 | 27 | struct btf_type; |
99c55f7d AS |
28 | |
29 | /* map is generic key/value storage optionally accesible by eBPF programs */ | |
30 | struct bpf_map_ops { | |
31 | /* funcs callable from userspace (via syscall) */ | |
1110f3a9 | 32 | int (*map_alloc_check)(union bpf_attr *attr); |
99c55f7d | 33 | struct bpf_map *(*map_alloc)(union bpf_attr *attr); |
61d1b6a4 DB |
34 | void (*map_release)(struct bpf_map *map, struct file *map_file); |
35 | void (*map_free)(struct bpf_map *map); | |
db20fd2b | 36 | int (*map_get_next_key)(struct bpf_map *map, void *key, void *next_key); |
ba6b8de4 | 37 | void (*map_release_uref)(struct bpf_map *map); |
db20fd2b AS |
38 | |
39 | /* funcs callable from userspace and from eBPF programs */ | |
40 | void *(*map_lookup_elem)(struct bpf_map *map, void *key); | |
3274f520 | 41 | int (*map_update_elem)(struct bpf_map *map, void *key, void *value, u64 flags); |
db20fd2b | 42 | int (*map_delete_elem)(struct bpf_map *map, void *key); |
f1a2e44a MV |
43 | int (*map_push_elem)(struct bpf_map *map, void *value, u64 flags); |
44 | int (*map_pop_elem)(struct bpf_map *map, void *value); | |
45 | int (*map_peek_elem)(struct bpf_map *map, void *value); | |
2a36f0b9 WN |
46 | |
47 | /* funcs called by prog_array and perf_event_array map */ | |
d056a788 DB |
48 | void *(*map_fd_get_ptr)(struct bpf_map *map, struct file *map_file, |
49 | int fd); | |
50 | void (*map_fd_put_ptr)(void *ptr); | |
81ed18ab | 51 | u32 (*map_gen_lookup)(struct bpf_map *map, struct bpf_insn *insn_buf); |
14dc6f04 | 52 | u32 (*map_fd_sys_lookup_elem)(void *ptr); |
a26ca7c9 MKL |
53 | void (*map_seq_show_elem)(struct bpf_map *map, void *key, |
54 | struct seq_file *m); | |
e8d2bec0 | 55 | int (*map_check_btf)(const struct bpf_map *map, |
1b2b234b | 56 | const struct btf *btf, |
e8d2bec0 DB |
57 | const struct btf_type *key_type, |
58 | const struct btf_type *value_type); | |
99c55f7d AS |
59 | }; |
60 | ||
61 | struct bpf_map { | |
a26ca7c9 | 62 | /* The first two cachelines with read-mostly members of which some |
be95a845 DB |
63 | * are also accessed in fast-path (e.g. ops, max_entries). |
64 | */ | |
65 | const struct bpf_map_ops *ops ____cacheline_aligned; | |
66 | struct bpf_map *inner_map_meta; | |
67 | #ifdef CONFIG_SECURITY | |
68 | void *security; | |
69 | #endif | |
99c55f7d AS |
70 | enum bpf_map_type map_type; |
71 | u32 key_size; | |
72 | u32 value_size; | |
73 | u32 max_entries; | |
6c905981 | 74 | u32 map_flags; |
d83525ca | 75 | int spin_lock_off; /* >=0 valid offset, <0 error */ |
f3f1c054 | 76 | u32 id; |
96eabe7a | 77 | int numa_node; |
9b2cf328 MKL |
78 | u32 btf_key_type_id; |
79 | u32 btf_value_type_id; | |
a26ca7c9 | 80 | struct btf *btf; |
d83525ca | 81 | u32 pages; |
b2157399 | 82 | bool unpriv_array; |
d83525ca | 83 | /* 51 bytes hole */ |
be95a845 | 84 | |
a26ca7c9 | 85 | /* The 3rd and 4th cacheline with misc members to avoid false sharing |
be95a845 DB |
86 | * particularly with refcounting. |
87 | */ | |
88 | struct user_struct *user ____cacheline_aligned; | |
89 | atomic_t refcnt; | |
c9da161c | 90 | atomic_t usercnt; |
be95a845 | 91 | struct work_struct work; |
067cae47 | 92 | char name[BPF_OBJ_NAME_LEN]; |
99c55f7d AS |
93 | }; |
94 | ||
d83525ca AS |
95 | static inline bool map_value_has_spin_lock(const struct bpf_map *map) |
96 | { | |
97 | return map->spin_lock_off >= 0; | |
98 | } | |
99 | ||
100 | static inline void check_and_init_map_lock(struct bpf_map *map, void *dst) | |
101 | { | |
102 | if (likely(!map_value_has_spin_lock(map))) | |
103 | return; | |
104 | *(struct bpf_spin_lock *)(dst + map->spin_lock_off) = | |
105 | (struct bpf_spin_lock){}; | |
106 | } | |
107 | ||
108 | /* copy everything but bpf_spin_lock */ | |
109 | static inline void copy_map_value(struct bpf_map *map, void *dst, void *src) | |
110 | { | |
111 | if (unlikely(map_value_has_spin_lock(map))) { | |
112 | u32 off = map->spin_lock_off; | |
113 | ||
114 | memcpy(dst, src, off); | |
115 | memcpy(dst + off + sizeof(struct bpf_spin_lock), | |
116 | src + off + sizeof(struct bpf_spin_lock), | |
117 | map->value_size - off - sizeof(struct bpf_spin_lock)); | |
118 | } else { | |
119 | memcpy(dst, src, map->value_size); | |
120 | } | |
121 | } | |
96049f3a AS |
122 | void copy_map_value_locked(struct bpf_map *map, void *dst, void *src, |
123 | bool lock_src); | |
d83525ca | 124 | |
602144c2 | 125 | struct bpf_offload_dev; |
a3884572 JK |
126 | struct bpf_offloaded_map; |
127 | ||
128 | struct bpf_map_dev_ops { | |
129 | int (*map_get_next_key)(struct bpf_offloaded_map *map, | |
130 | void *key, void *next_key); | |
131 | int (*map_lookup_elem)(struct bpf_offloaded_map *map, | |
132 | void *key, void *value); | |
133 | int (*map_update_elem)(struct bpf_offloaded_map *map, | |
134 | void *key, void *value, u64 flags); | |
135 | int (*map_delete_elem)(struct bpf_offloaded_map *map, void *key); | |
136 | }; | |
137 | ||
138 | struct bpf_offloaded_map { | |
139 | struct bpf_map map; | |
140 | struct net_device *netdev; | |
141 | const struct bpf_map_dev_ops *dev_ops; | |
142 | void *dev_priv; | |
143 | struct list_head offloads; | |
144 | }; | |
145 | ||
146 | static inline struct bpf_offloaded_map *map_to_offmap(struct bpf_map *map) | |
147 | { | |
148 | return container_of(map, struct bpf_offloaded_map, map); | |
149 | } | |
150 | ||
0cd3cbed JK |
151 | static inline bool bpf_map_offload_neutral(const struct bpf_map *map) |
152 | { | |
153 | return map->map_type == BPF_MAP_TYPE_PERF_EVENT_ARRAY; | |
154 | } | |
155 | ||
a26ca7c9 MKL |
156 | static inline bool bpf_map_support_seq_show(const struct bpf_map *map) |
157 | { | |
e8d2bec0 | 158 | return map->btf && map->ops->map_seq_show_elem; |
a26ca7c9 MKL |
159 | } |
160 | ||
e8d2bec0 | 161 | int map_check_no_btf(const struct bpf_map *map, |
1b2b234b | 162 | const struct btf *btf, |
e8d2bec0 DB |
163 | const struct btf_type *key_type, |
164 | const struct btf_type *value_type); | |
165 | ||
a3884572 JK |
166 | extern const struct bpf_map_ops bpf_map_offload_ops; |
167 | ||
17a52670 AS |
168 | /* function argument constraints */ |
169 | enum bpf_arg_type { | |
80f1d68c | 170 | ARG_DONTCARE = 0, /* unused argument in helper function */ |
17a52670 AS |
171 | |
172 | /* the following constraints used to prototype | |
173 | * bpf_map_lookup/update/delete_elem() functions | |
174 | */ | |
175 | ARG_CONST_MAP_PTR, /* const argument used as pointer to bpf_map */ | |
176 | ARG_PTR_TO_MAP_KEY, /* pointer to stack used as map key */ | |
177 | ARG_PTR_TO_MAP_VALUE, /* pointer to stack used as map value */ | |
2ea864c5 | 178 | ARG_PTR_TO_UNINIT_MAP_VALUE, /* pointer to valid memory used to store a map value */ |
17a52670 AS |
179 | |
180 | /* the following constraints used to prototype bpf_memcmp() and other | |
181 | * functions that access data on eBPF program stack | |
182 | */ | |
39f19ebb | 183 | ARG_PTR_TO_MEM, /* pointer to valid memory (stack, packet, map value) */ |
db1ac496 | 184 | ARG_PTR_TO_MEM_OR_NULL, /* pointer to valid memory or NULL */ |
39f19ebb AS |
185 | ARG_PTR_TO_UNINIT_MEM, /* pointer to memory does not need to be initialized, |
186 | * helper function must fill all bytes or clear | |
187 | * them in error case. | |
435faee1 DB |
188 | */ |
189 | ||
39f19ebb AS |
190 | ARG_CONST_SIZE, /* number of bytes accessed from memory */ |
191 | ARG_CONST_SIZE_OR_ZERO, /* number of bytes accessed from memory or 0 */ | |
80f1d68c | 192 | |
608cd71a | 193 | ARG_PTR_TO_CTX, /* pointer to context */ |
80f1d68c | 194 | ARG_ANYTHING, /* any (initialized) argument is ok */ |
c64b7983 | 195 | ARG_PTR_TO_SOCKET, /* pointer to bpf_sock */ |
d83525ca | 196 | ARG_PTR_TO_SPIN_LOCK, /* pointer to bpf_spin_lock */ |
46f8bc92 | 197 | ARG_PTR_TO_SOCK_COMMON, /* pointer to sock_common */ |
17a52670 AS |
198 | }; |
199 | ||
200 | /* type of values returned from helper functions */ | |
201 | enum bpf_return_type { | |
202 | RET_INTEGER, /* function returns integer */ | |
203 | RET_VOID, /* function doesn't return anything */ | |
3e6a4b3e | 204 | RET_PTR_TO_MAP_VALUE, /* returns a pointer to map elem value */ |
17a52670 | 205 | RET_PTR_TO_MAP_VALUE_OR_NULL, /* returns a pointer to map elem value or NULL */ |
c64b7983 | 206 | RET_PTR_TO_SOCKET_OR_NULL, /* returns a pointer to a socket or NULL */ |
17a52670 AS |
207 | }; |
208 | ||
09756af4 AS |
209 | /* eBPF function prototype used by verifier to allow BPF_CALLs from eBPF programs |
210 | * to in-kernel helper functions and for adjusting imm32 field in BPF_CALL | |
211 | * instructions after verifying | |
212 | */ | |
213 | struct bpf_func_proto { | |
214 | u64 (*func)(u64 r1, u64 r2, u64 r3, u64 r4, u64 r5); | |
215 | bool gpl_only; | |
36bbef52 | 216 | bool pkt_access; |
17a52670 AS |
217 | enum bpf_return_type ret_type; |
218 | enum bpf_arg_type arg1_type; | |
219 | enum bpf_arg_type arg2_type; | |
220 | enum bpf_arg_type arg3_type; | |
221 | enum bpf_arg_type arg4_type; | |
222 | enum bpf_arg_type arg5_type; | |
223 | }; | |
224 | ||
225 | /* bpf_context is intentionally undefined structure. Pointer to bpf_context is | |
226 | * the first argument to eBPF programs. | |
227 | * For socket filters: 'struct bpf_context *' == 'struct sk_buff *' | |
228 | */ | |
229 | struct bpf_context; | |
230 | ||
231 | enum bpf_access_type { | |
232 | BPF_READ = 1, | |
233 | BPF_WRITE = 2 | |
09756af4 AS |
234 | }; |
235 | ||
19de99f7 | 236 | /* types of values stored in eBPF registers */ |
f1174f77 EC |
237 | /* Pointer types represent: |
238 | * pointer | |
239 | * pointer + imm | |
240 | * pointer + (u16) var | |
241 | * pointer + (u16) var + imm | |
242 | * if (range > 0) then [ptr, ptr + range - off) is safe to access | |
243 | * if (id > 0) means that some 'var' was added | |
244 | * if (off > 0) means that 'imm' was added | |
245 | */ | |
19de99f7 AS |
246 | enum bpf_reg_type { |
247 | NOT_INIT = 0, /* nothing was written into register */ | |
f1174f77 | 248 | SCALAR_VALUE, /* reg doesn't contain a valid pointer */ |
19de99f7 AS |
249 | PTR_TO_CTX, /* reg points to bpf_context */ |
250 | CONST_PTR_TO_MAP, /* reg points to struct bpf_map */ | |
251 | PTR_TO_MAP_VALUE, /* reg points to map element value */ | |
252 | PTR_TO_MAP_VALUE_OR_NULL,/* points to map elem value or NULL */ | |
f1174f77 | 253 | PTR_TO_STACK, /* reg == frame_pointer + offset */ |
de8f3a83 | 254 | PTR_TO_PACKET_META, /* skb->data - meta_len */ |
f1174f77 | 255 | PTR_TO_PACKET, /* reg points to skb->data */ |
19de99f7 | 256 | PTR_TO_PACKET_END, /* skb->data + headlen */ |
d58e468b | 257 | PTR_TO_FLOW_KEYS, /* reg points to bpf_flow_keys */ |
c64b7983 JS |
258 | PTR_TO_SOCKET, /* reg points to struct bpf_sock */ |
259 | PTR_TO_SOCKET_OR_NULL, /* reg points to struct bpf_sock or NULL */ | |
46f8bc92 MKL |
260 | PTR_TO_SOCK_COMMON, /* reg points to sock_common */ |
261 | PTR_TO_SOCK_COMMON_OR_NULL, /* reg points to sock_common or NULL */ | |
19de99f7 AS |
262 | }; |
263 | ||
23994631 YS |
264 | /* The information passed from prog-specific *_is_valid_access |
265 | * back to the verifier. | |
266 | */ | |
267 | struct bpf_insn_access_aux { | |
268 | enum bpf_reg_type reg_type; | |
269 | int ctx_field_size; | |
23994631 YS |
270 | }; |
271 | ||
f96da094 DB |
272 | static inline void |
273 | bpf_ctx_record_field_size(struct bpf_insn_access_aux *aux, u32 size) | |
274 | { | |
275 | aux->ctx_field_size = size; | |
276 | } | |
277 | ||
7de16e3a JK |
278 | struct bpf_prog_ops { |
279 | int (*test_run)(struct bpf_prog *prog, const union bpf_attr *kattr, | |
280 | union bpf_attr __user *uattr); | |
281 | }; | |
282 | ||
09756af4 AS |
283 | struct bpf_verifier_ops { |
284 | /* return eBPF function prototype for verification */ | |
5e43f899 AI |
285 | const struct bpf_func_proto * |
286 | (*get_func_proto)(enum bpf_func_id func_id, | |
287 | const struct bpf_prog *prog); | |
17a52670 AS |
288 | |
289 | /* return true if 'size' wide access at offset 'off' within bpf_context | |
290 | * with 'type' (read or write) is allowed | |
291 | */ | |
19de99f7 | 292 | bool (*is_valid_access)(int off, int size, enum bpf_access_type type, |
5e43f899 | 293 | const struct bpf_prog *prog, |
23994631 | 294 | struct bpf_insn_access_aux *info); |
36bbef52 DB |
295 | int (*gen_prologue)(struct bpf_insn *insn, bool direct_write, |
296 | const struct bpf_prog *prog); | |
e0cea7ce DB |
297 | int (*gen_ld_abs)(const struct bpf_insn *orig, |
298 | struct bpf_insn *insn_buf); | |
6b8cc1d1 DB |
299 | u32 (*convert_ctx_access)(enum bpf_access_type type, |
300 | const struct bpf_insn *src, | |
301 | struct bpf_insn *dst, | |
f96da094 | 302 | struct bpf_prog *prog, u32 *target_size); |
09756af4 AS |
303 | }; |
304 | ||
cae1927c | 305 | struct bpf_prog_offload_ops { |
08ca90af | 306 | /* verifier basic callbacks */ |
cae1927c JK |
307 | int (*insn_hook)(struct bpf_verifier_env *env, |
308 | int insn_idx, int prev_insn_idx); | |
c941ce9c | 309 | int (*finalize)(struct bpf_verifier_env *env); |
08ca90af JK |
310 | /* verifier optimization callbacks (called after .finalize) */ |
311 | int (*replace_insn)(struct bpf_verifier_env *env, u32 off, | |
312 | struct bpf_insn *insn); | |
313 | int (*remove_insns)(struct bpf_verifier_env *env, u32 off, u32 cnt); | |
314 | /* program management callbacks */ | |
16a8cb5c QM |
315 | int (*prepare)(struct bpf_prog *prog); |
316 | int (*translate)(struct bpf_prog *prog); | |
eb911947 | 317 | void (*destroy)(struct bpf_prog *prog); |
cae1927c JK |
318 | }; |
319 | ||
0a9c1991 | 320 | struct bpf_prog_offload { |
ab3f0063 JK |
321 | struct bpf_prog *prog; |
322 | struct net_device *netdev; | |
341b3e7b | 323 | struct bpf_offload_dev *offdev; |
ab3f0063 JK |
324 | void *dev_priv; |
325 | struct list_head offloads; | |
326 | bool dev_state; | |
08ca90af | 327 | bool opt_failed; |
fcfb126d JW |
328 | void *jited_image; |
329 | u32 jited_len; | |
ab3f0063 JK |
330 | }; |
331 | ||
8bad74f9 RG |
332 | enum bpf_cgroup_storage_type { |
333 | BPF_CGROUP_STORAGE_SHARED, | |
b741f163 | 334 | BPF_CGROUP_STORAGE_PERCPU, |
8bad74f9 RG |
335 | __BPF_CGROUP_STORAGE_MAX |
336 | }; | |
337 | ||
338 | #define MAX_BPF_CGROUP_STORAGE_TYPE __BPF_CGROUP_STORAGE_MAX | |
339 | ||
09756af4 AS |
340 | struct bpf_prog_aux { |
341 | atomic_t refcnt; | |
24701ece | 342 | u32 used_map_cnt; |
32bbe007 | 343 | u32 max_ctx_offset; |
e647815a | 344 | u32 max_pkt_offset; |
8726679a | 345 | u32 stack_depth; |
dc4bb0e2 | 346 | u32 id; |
ba64e7d8 YS |
347 | u32 func_cnt; /* used by non-func prog as the number of func progs */ |
348 | u32 func_idx; /* 0 for non-func prog, the index in func array for func prog */ | |
9a18eedb | 349 | bool offload_requested; |
1c2a088a AS |
350 | struct bpf_prog **func; |
351 | void *jit_data; /* JIT specific data. arch dependent */ | |
74451e66 DB |
352 | struct latch_tree_node ksym_tnode; |
353 | struct list_head ksym_lnode; | |
7de16e3a | 354 | const struct bpf_prog_ops *ops; |
09756af4 | 355 | struct bpf_map **used_maps; |
09756af4 | 356 | struct bpf_prog *prog; |
aaac3ba9 | 357 | struct user_struct *user; |
cb4d2b3f | 358 | u64 load_time; /* ns since boottime */ |
8bad74f9 | 359 | struct bpf_map *cgroup_storage[MAX_BPF_CGROUP_STORAGE_TYPE]; |
067cae47 | 360 | char name[BPF_OBJ_NAME_LEN]; |
afdb09c7 CF |
361 | #ifdef CONFIG_SECURITY |
362 | void *security; | |
363 | #endif | |
0a9c1991 | 364 | struct bpf_prog_offload *offload; |
838e9690 | 365 | struct btf *btf; |
ba64e7d8 | 366 | struct bpf_func_info *func_info; |
c454a46b MKL |
367 | /* bpf_line_info loaded from userspace. linfo->insn_off |
368 | * has the xlated insn offset. | |
369 | * Both the main and sub prog share the same linfo. | |
370 | * The subprog can access its first linfo by | |
371 | * using the linfo_idx. | |
372 | */ | |
373 | struct bpf_line_info *linfo; | |
374 | /* jited_linfo is the jited addr of the linfo. It has a | |
375 | * one to one mapping to linfo: | |
376 | * jited_linfo[i] is the jited addr for the linfo[i]->insn_off. | |
377 | * Both the main and sub prog share the same jited_linfo. | |
378 | * The subprog can access its first jited_linfo by | |
379 | * using the linfo_idx. | |
380 | */ | |
381 | void **jited_linfo; | |
ba64e7d8 | 382 | u32 func_info_cnt; |
c454a46b MKL |
383 | u32 nr_linfo; |
384 | /* subprog can use linfo_idx to access its first linfo and | |
385 | * jited_linfo. | |
386 | * main prog always has linfo_idx == 0 | |
387 | */ | |
388 | u32 linfo_idx; | |
abf2e7d6 AS |
389 | union { |
390 | struct work_struct work; | |
391 | struct rcu_head rcu; | |
392 | }; | |
09756af4 AS |
393 | }; |
394 | ||
04fd61ab AS |
395 | struct bpf_array { |
396 | struct bpf_map map; | |
397 | u32 elem_size; | |
b2157399 | 398 | u32 index_mask; |
04fd61ab AS |
399 | /* 'ownership' of prog_array is claimed by the first program that |
400 | * is going to use this map or by the first program which FD is stored | |
401 | * in the map to make sure that all callers and callees have the same | |
402 | * prog_type and JITed flag | |
403 | */ | |
404 | enum bpf_prog_type owner_prog_type; | |
405 | bool owner_jited; | |
406 | union { | |
407 | char value[0] __aligned(8); | |
2a36f0b9 | 408 | void *ptrs[0] __aligned(8); |
a10423b8 | 409 | void __percpu *pptrs[0] __aligned(8); |
04fd61ab AS |
410 | }; |
411 | }; | |
3b1efb19 | 412 | |
04fd61ab AS |
413 | #define MAX_TAIL_CALL_CNT 32 |
414 | ||
3b1efb19 DB |
415 | struct bpf_event_entry { |
416 | struct perf_event *event; | |
417 | struct file *perf_file; | |
418 | struct file *map_file; | |
419 | struct rcu_head rcu; | |
420 | }; | |
421 | ||
04fd61ab | 422 | bool bpf_prog_array_compatible(struct bpf_array *array, const struct bpf_prog *fp); |
f1f7714e | 423 | int bpf_prog_calc_tag(struct bpf_prog *fp); |
bd570ff9 | 424 | |
0756ea3e | 425 | const struct bpf_func_proto *bpf_get_trace_printk_proto(void); |
555c8a86 DB |
426 | |
427 | typedef unsigned long (*bpf_ctx_copy_t)(void *dst, const void *src, | |
aa7145c1 | 428 | unsigned long off, unsigned long len); |
c64b7983 JS |
429 | typedef u32 (*bpf_convert_ctx_access_t)(enum bpf_access_type type, |
430 | const struct bpf_insn *src, | |
431 | struct bpf_insn *dst, | |
432 | struct bpf_prog *prog, | |
433 | u32 *target_size); | |
555c8a86 DB |
434 | |
435 | u64 bpf_event_output(struct bpf_map *map, u64 flags, void *meta, u64 meta_size, | |
436 | void *ctx, u64 ctx_size, bpf_ctx_copy_t ctx_copy); | |
04fd61ab | 437 | |
1cf1cae9 AS |
438 | int bpf_prog_test_run_xdp(struct bpf_prog *prog, const union bpf_attr *kattr, |
439 | union bpf_attr __user *uattr); | |
440 | int bpf_prog_test_run_skb(struct bpf_prog *prog, const union bpf_attr *kattr, | |
441 | union bpf_attr __user *uattr); | |
b7a1848e SF |
442 | int bpf_prog_test_run_flow_dissector(struct bpf_prog *prog, |
443 | const union bpf_attr *kattr, | |
444 | union bpf_attr __user *uattr); | |
1cf1cae9 | 445 | |
324bda9e AS |
446 | /* an array of programs to be executed under rcu_lock. |
447 | * | |
448 | * Typical usage: | |
449 | * ret = BPF_PROG_RUN_ARRAY(&bpf_prog_array, ctx, BPF_PROG_RUN); | |
450 | * | |
451 | * the structure returned by bpf_prog_array_alloc() should be populated | |
452 | * with program pointers and the last pointer must be NULL. | |
453 | * The user has to keep refcnt on the program and make sure the program | |
454 | * is removed from the array before bpf_prog_put(). | |
455 | * The 'struct bpf_prog_array *' should only be replaced with xchg() | |
456 | * since other cpus are walking the array of pointers in parallel. | |
457 | */ | |
394e40a2 RG |
458 | struct bpf_prog_array_item { |
459 | struct bpf_prog *prog; | |
8bad74f9 | 460 | struct bpf_cgroup_storage *cgroup_storage[MAX_BPF_CGROUP_STORAGE_TYPE]; |
394e40a2 RG |
461 | }; |
462 | ||
324bda9e AS |
463 | struct bpf_prog_array { |
464 | struct rcu_head rcu; | |
394e40a2 | 465 | struct bpf_prog_array_item items[0]; |
324bda9e AS |
466 | }; |
467 | ||
d29ab6e1 | 468 | struct bpf_prog_array *bpf_prog_array_alloc(u32 prog_cnt, gfp_t flags); |
324bda9e | 469 | void bpf_prog_array_free(struct bpf_prog_array __rcu *progs); |
468e2f64 AS |
470 | int bpf_prog_array_length(struct bpf_prog_array __rcu *progs); |
471 | int bpf_prog_array_copy_to_user(struct bpf_prog_array __rcu *progs, | |
472 | __u32 __user *prog_ids, u32 cnt); | |
324bda9e | 473 | |
e87c6bc3 YS |
474 | void bpf_prog_array_delete_safe(struct bpf_prog_array __rcu *progs, |
475 | struct bpf_prog *old_prog); | |
f371b304 | 476 | int bpf_prog_array_copy_info(struct bpf_prog_array __rcu *array, |
3a38bb98 YS |
477 | u32 *prog_ids, u32 request_cnt, |
478 | u32 *prog_cnt); | |
e87c6bc3 YS |
479 | int bpf_prog_array_copy(struct bpf_prog_array __rcu *old_array, |
480 | struct bpf_prog *exclude_prog, | |
481 | struct bpf_prog *include_prog, | |
482 | struct bpf_prog_array **new_array); | |
483 | ||
484 | #define __BPF_PROG_RUN_ARRAY(array, ctx, func, check_non_null) \ | |
324bda9e | 485 | ({ \ |
394e40a2 RG |
486 | struct bpf_prog_array_item *_item; \ |
487 | struct bpf_prog *_prog; \ | |
e87c6bc3 | 488 | struct bpf_prog_array *_array; \ |
324bda9e | 489 | u32 _ret = 1; \ |
6899b32b | 490 | preempt_disable(); \ |
324bda9e | 491 | rcu_read_lock(); \ |
e87c6bc3 YS |
492 | _array = rcu_dereference(array); \ |
493 | if (unlikely(check_non_null && !_array))\ | |
494 | goto _out; \ | |
394e40a2 RG |
495 | _item = &_array->items[0]; \ |
496 | while ((_prog = READ_ONCE(_item->prog))) { \ | |
497 | bpf_cgroup_storage_set(_item->cgroup_storage); \ | |
498 | _ret &= func(_prog, ctx); \ | |
499 | _item++; \ | |
e87c6bc3 YS |
500 | } \ |
501 | _out: \ | |
324bda9e | 502 | rcu_read_unlock(); \ |
6899b32b | 503 | preempt_enable_no_resched(); \ |
324bda9e AS |
504 | _ret; \ |
505 | }) | |
506 | ||
e87c6bc3 YS |
507 | #define BPF_PROG_RUN_ARRAY(array, ctx, func) \ |
508 | __BPF_PROG_RUN_ARRAY(array, ctx, func, false) | |
509 | ||
510 | #define BPF_PROG_RUN_ARRAY_CHECK(array, ctx, func) \ | |
511 | __BPF_PROG_RUN_ARRAY(array, ctx, func, true) | |
512 | ||
89aa0758 | 513 | #ifdef CONFIG_BPF_SYSCALL |
b121d1e7 AS |
514 | DECLARE_PER_CPU(int, bpf_prog_active); |
515 | ||
f66e448c CF |
516 | extern const struct file_operations bpf_map_fops; |
517 | extern const struct file_operations bpf_prog_fops; | |
518 | ||
7de16e3a JK |
519 | #define BPF_PROG_TYPE(_id, _name) \ |
520 | extern const struct bpf_prog_ops _name ## _prog_ops; \ | |
521 | extern const struct bpf_verifier_ops _name ## _verifier_ops; | |
40077e0c JB |
522 | #define BPF_MAP_TYPE(_id, _ops) \ |
523 | extern const struct bpf_map_ops _ops; | |
be9370a7 JB |
524 | #include <linux/bpf_types.h> |
525 | #undef BPF_PROG_TYPE | |
40077e0c | 526 | #undef BPF_MAP_TYPE |
0fc174de | 527 | |
ab3f0063 | 528 | extern const struct bpf_prog_ops bpf_offload_prog_ops; |
4f9218aa JK |
529 | extern const struct bpf_verifier_ops tc_cls_act_analyzer_ops; |
530 | extern const struct bpf_verifier_ops xdp_analyzer_ops; | |
531 | ||
0fc174de | 532 | struct bpf_prog *bpf_prog_get(u32 ufd); |
248f346f | 533 | struct bpf_prog *bpf_prog_get_type_dev(u32 ufd, enum bpf_prog_type type, |
288b3de5 | 534 | bool attach_drv); |
6d67942d | 535 | struct bpf_prog * __must_check bpf_prog_add(struct bpf_prog *prog, int i); |
c540594f | 536 | void bpf_prog_sub(struct bpf_prog *prog, int i); |
6d67942d | 537 | struct bpf_prog * __must_check bpf_prog_inc(struct bpf_prog *prog); |
a6f6df69 | 538 | struct bpf_prog * __must_check bpf_prog_inc_not_zero(struct bpf_prog *prog); |
61e021f3 | 539 | void bpf_prog_put(struct bpf_prog *prog); |
5ccb071e DB |
540 | int __bpf_prog_charge(struct user_struct *user, u32 pages); |
541 | void __bpf_prog_uncharge(struct user_struct *user, u32 pages); | |
61e021f3 | 542 | |
ad8ad79f | 543 | void bpf_prog_free_id(struct bpf_prog *prog, bool do_idr_lock); |
a3884572 | 544 | void bpf_map_free_id(struct bpf_map *map, bool do_idr_lock); |
ad8ad79f | 545 | |
c9da161c | 546 | struct bpf_map *bpf_map_get_with_uref(u32 ufd); |
c2101297 | 547 | struct bpf_map *__bpf_map_get(struct fd f); |
6d67942d | 548 | struct bpf_map * __must_check bpf_map_inc(struct bpf_map *map, bool uref); |
c9da161c | 549 | void bpf_map_put_with_uref(struct bpf_map *map); |
61e021f3 | 550 | void bpf_map_put(struct bpf_map *map); |
6c905981 | 551 | int bpf_map_precharge_memlock(u32 pages); |
0a4c58f5 RG |
552 | int bpf_map_charge_memlock(struct bpf_map *map, u32 pages); |
553 | void bpf_map_uncharge_memlock(struct bpf_map *map, u32 pages); | |
96eabe7a | 554 | void *bpf_map_area_alloc(size_t size, int numa_node); |
d407bd25 | 555 | void bpf_map_area_free(void *base); |
bd475643 | 556 | void bpf_map_init_from_attr(struct bpf_map *map, union bpf_attr *attr); |
61e021f3 | 557 | |
1be7f75d AS |
558 | extern int sysctl_unprivileged_bpf_disabled; |
559 | ||
6e71b04a | 560 | int bpf_map_new_fd(struct bpf_map *map, int flags); |
b2197755 DB |
561 | int bpf_prog_new_fd(struct bpf_prog *prog); |
562 | ||
563 | int bpf_obj_pin_user(u32 ufd, const char __user *pathname); | |
6e71b04a | 564 | int bpf_obj_get_user(const char __user *pathname, int flags); |
b2197755 | 565 | |
15a07b33 AS |
566 | int bpf_percpu_hash_copy(struct bpf_map *map, void *key, void *value); |
567 | int bpf_percpu_array_copy(struct bpf_map *map, void *key, void *value); | |
568 | int bpf_percpu_hash_update(struct bpf_map *map, void *key, void *value, | |
569 | u64 flags); | |
570 | int bpf_percpu_array_update(struct bpf_map *map, void *key, void *value, | |
571 | u64 flags); | |
d056a788 | 572 | |
557c0c6e | 573 | int bpf_stackmap_copy(struct bpf_map *map, void *key, void *value); |
15a07b33 | 574 | |
d056a788 DB |
575 | int bpf_fd_array_map_update_elem(struct bpf_map *map, struct file *map_file, |
576 | void *key, void *value, u64 map_flags); | |
14dc6f04 | 577 | int bpf_fd_array_map_lookup_elem(struct bpf_map *map, void *key, u32 *value); |
bcc6b1b7 MKL |
578 | int bpf_fd_htab_map_update_elem(struct bpf_map *map, struct file *map_file, |
579 | void *key, void *value, u64 map_flags); | |
14dc6f04 | 580 | int bpf_fd_htab_map_lookup_elem(struct bpf_map *map, void *key, u32 *value); |
d056a788 | 581 | |
6e71b04a | 582 | int bpf_get_file_flag(int flags); |
dcab51f1 MKL |
583 | int bpf_check_uarg_tail_zero(void __user *uaddr, size_t expected_size, |
584 | size_t actual_size); | |
6e71b04a | 585 | |
15a07b33 AS |
586 | /* memcpy that is used with 8-byte aligned pointers, power-of-8 size and |
587 | * forced to use 'long' read/writes to try to atomically copy long counters. | |
588 | * Best-effort only. No barriers here, since it _will_ race with concurrent | |
589 | * updates from BPF programs. Called from bpf syscall and mostly used with | |
590 | * size 8 or 16 bytes, so ask compiler to inline it. | |
591 | */ | |
592 | static inline void bpf_long_memcpy(void *dst, const void *src, u32 size) | |
593 | { | |
594 | const long *lsrc = src; | |
595 | long *ldst = dst; | |
596 | ||
597 | size /= sizeof(long); | |
598 | while (size--) | |
599 | *ldst++ = *lsrc++; | |
600 | } | |
601 | ||
61e021f3 | 602 | /* verify correctness of eBPF program */ |
838e9690 YS |
603 | int bpf_check(struct bpf_prog **fp, union bpf_attr *attr, |
604 | union bpf_attr __user *uattr); | |
1ea47e01 | 605 | void bpf_patch_call_args(struct bpf_insn *insn, u32 stack_depth); |
46f55cff JF |
606 | |
607 | /* Map specifics */ | |
67f29e07 | 608 | struct xdp_buff; |
6d5fc195 | 609 | struct sk_buff; |
67f29e07 JDB |
610 | |
611 | struct bpf_dtab_netdev *__dev_map_lookup_elem(struct bpf_map *map, u32 key); | |
46f55cff JF |
612 | void __dev_map_insert_ctx(struct bpf_map *map, u32 index); |
613 | void __dev_map_flush(struct bpf_map *map); | |
38edddb8 JDB |
614 | int dev_map_enqueue(struct bpf_dtab_netdev *dst, struct xdp_buff *xdp, |
615 | struct net_device *dev_rx); | |
6d5fc195 TM |
616 | int dev_map_generic_redirect(struct bpf_dtab_netdev *dst, struct sk_buff *skb, |
617 | struct bpf_prog *xdp_prog); | |
46f55cff | 618 | |
9c270af3 JDB |
619 | struct bpf_cpu_map_entry *__cpu_map_lookup_elem(struct bpf_map *map, u32 key); |
620 | void __cpu_map_insert_ctx(struct bpf_map *map, u32 index); | |
621 | void __cpu_map_flush(struct bpf_map *map); | |
9c270af3 JDB |
622 | int cpu_map_enqueue(struct bpf_cpu_map_entry *rcpu, struct xdp_buff *xdp, |
623 | struct net_device *dev_rx); | |
624 | ||
96eabe7a MKL |
625 | /* Return map's numa specified by userspace */ |
626 | static inline int bpf_map_attr_numa_node(const union bpf_attr *attr) | |
627 | { | |
628 | return (attr->map_flags & BPF_F_NUMA_NODE) ? | |
629 | attr->numa_node : NUMA_NO_NODE; | |
630 | } | |
631 | ||
040ee692 | 632 | struct bpf_prog *bpf_prog_get_type_path(const char *name, enum bpf_prog_type type); |
5dc4c4b7 | 633 | int array_map_alloc_check(union bpf_attr *attr); |
040ee692 | 634 | |
9c270af3 | 635 | #else /* !CONFIG_BPF_SYSCALL */ |
0fc174de DB |
636 | static inline struct bpf_prog *bpf_prog_get(u32 ufd) |
637 | { | |
638 | return ERR_PTR(-EOPNOTSUPP); | |
639 | } | |
640 | ||
248f346f JK |
641 | static inline struct bpf_prog *bpf_prog_get_type_dev(u32 ufd, |
642 | enum bpf_prog_type type, | |
288b3de5 | 643 | bool attach_drv) |
248f346f JK |
644 | { |
645 | return ERR_PTR(-EOPNOTSUPP); | |
646 | } | |
647 | ||
6d67942d DB |
648 | static inline struct bpf_prog * __must_check bpf_prog_add(struct bpf_prog *prog, |
649 | int i) | |
cc2e0b3f BB |
650 | { |
651 | return ERR_PTR(-EOPNOTSUPP); | |
652 | } | |
113214be | 653 | |
c540594f DB |
654 | static inline void bpf_prog_sub(struct bpf_prog *prog, int i) |
655 | { | |
656 | } | |
657 | ||
0fc174de DB |
658 | static inline void bpf_prog_put(struct bpf_prog *prog) |
659 | { | |
660 | } | |
6d67942d DB |
661 | |
662 | static inline struct bpf_prog * __must_check bpf_prog_inc(struct bpf_prog *prog) | |
aa6a5f3c AS |
663 | { |
664 | return ERR_PTR(-EOPNOTSUPP); | |
665 | } | |
5ccb071e | 666 | |
a6f6df69 JF |
667 | static inline struct bpf_prog *__must_check |
668 | bpf_prog_inc_not_zero(struct bpf_prog *prog) | |
669 | { | |
670 | return ERR_PTR(-EOPNOTSUPP); | |
671 | } | |
672 | ||
5ccb071e DB |
673 | static inline int __bpf_prog_charge(struct user_struct *user, u32 pages) |
674 | { | |
675 | return 0; | |
676 | } | |
677 | ||
678 | static inline void __bpf_prog_uncharge(struct user_struct *user, u32 pages) | |
679 | { | |
680 | } | |
46f55cff | 681 | |
6e71b04a | 682 | static inline int bpf_obj_get_user(const char __user *pathname, int flags) |
98589a09 SL |
683 | { |
684 | return -EOPNOTSUPP; | |
685 | } | |
686 | ||
46f55cff JF |
687 | static inline struct net_device *__dev_map_lookup_elem(struct bpf_map *map, |
688 | u32 key) | |
689 | { | |
690 | return NULL; | |
691 | } | |
692 | ||
693 | static inline void __dev_map_insert_ctx(struct bpf_map *map, u32 index) | |
694 | { | |
695 | } | |
696 | ||
697 | static inline void __dev_map_flush(struct bpf_map *map) | |
698 | { | |
699 | } | |
9c270af3 | 700 | |
67f29e07 JDB |
701 | struct xdp_buff; |
702 | struct bpf_dtab_netdev; | |
703 | ||
704 | static inline | |
38edddb8 JDB |
705 | int dev_map_enqueue(struct bpf_dtab_netdev *dst, struct xdp_buff *xdp, |
706 | struct net_device *dev_rx) | |
67f29e07 JDB |
707 | { |
708 | return 0; | |
709 | } | |
710 | ||
6d5fc195 TM |
711 | struct sk_buff; |
712 | ||
713 | static inline int dev_map_generic_redirect(struct bpf_dtab_netdev *dst, | |
714 | struct sk_buff *skb, | |
715 | struct bpf_prog *xdp_prog) | |
716 | { | |
717 | return 0; | |
718 | } | |
719 | ||
9c270af3 JDB |
720 | static inline |
721 | struct bpf_cpu_map_entry *__cpu_map_lookup_elem(struct bpf_map *map, u32 key) | |
722 | { | |
723 | return NULL; | |
724 | } | |
725 | ||
726 | static inline void __cpu_map_insert_ctx(struct bpf_map *map, u32 index) | |
727 | { | |
728 | } | |
729 | ||
730 | static inline void __cpu_map_flush(struct bpf_map *map) | |
731 | { | |
732 | } | |
733 | ||
9c270af3 JDB |
734 | static inline int cpu_map_enqueue(struct bpf_cpu_map_entry *rcpu, |
735 | struct xdp_buff *xdp, | |
736 | struct net_device *dev_rx) | |
737 | { | |
738 | return 0; | |
739 | } | |
040ee692 AV |
740 | |
741 | static inline struct bpf_prog *bpf_prog_get_type_path(const char *name, | |
742 | enum bpf_prog_type type) | |
743 | { | |
744 | return ERR_PTR(-EOPNOTSUPP); | |
745 | } | |
61e021f3 | 746 | #endif /* CONFIG_BPF_SYSCALL */ |
09756af4 | 747 | |
479321e9 JK |
748 | static inline struct bpf_prog *bpf_prog_get_type(u32 ufd, |
749 | enum bpf_prog_type type) | |
750 | { | |
751 | return bpf_prog_get_type_dev(ufd, type, false); | |
752 | } | |
753 | ||
040ee692 AV |
754 | bool bpf_prog_get_ok(struct bpf_prog *, enum bpf_prog_type *, bool); |
755 | ||
ab3f0063 JK |
756 | int bpf_prog_offload_compile(struct bpf_prog *prog); |
757 | void bpf_prog_offload_destroy(struct bpf_prog *prog); | |
675fc275 JK |
758 | int bpf_prog_offload_info_fill(struct bpf_prog_info *info, |
759 | struct bpf_prog *prog); | |
ab3f0063 | 760 | |
52775b33 JK |
761 | int bpf_map_offload_info_fill(struct bpf_map_info *info, struct bpf_map *map); |
762 | ||
a3884572 JK |
763 | int bpf_map_offload_lookup_elem(struct bpf_map *map, void *key, void *value); |
764 | int bpf_map_offload_update_elem(struct bpf_map *map, | |
765 | void *key, void *value, u64 flags); | |
766 | int bpf_map_offload_delete_elem(struct bpf_map *map, void *key); | |
767 | int bpf_map_offload_get_next_key(struct bpf_map *map, | |
768 | void *key, void *next_key); | |
769 | ||
09728266 | 770 | bool bpf_offload_prog_map_match(struct bpf_prog *prog, struct bpf_map *map); |
a3884572 | 771 | |
1385d755 QM |
772 | struct bpf_offload_dev * |
773 | bpf_offload_dev_create(const struct bpf_prog_offload_ops *ops); | |
602144c2 JK |
774 | void bpf_offload_dev_destroy(struct bpf_offload_dev *offdev); |
775 | int bpf_offload_dev_netdev_register(struct bpf_offload_dev *offdev, | |
776 | struct net_device *netdev); | |
777 | void bpf_offload_dev_netdev_unregister(struct bpf_offload_dev *offdev, | |
778 | struct net_device *netdev); | |
fd4f227d | 779 | bool bpf_offload_dev_match(struct bpf_prog *prog, struct net_device *netdev); |
9fd7c555 | 780 | |
ab3f0063 JK |
781 | #if defined(CONFIG_NET) && defined(CONFIG_BPF_SYSCALL) |
782 | int bpf_prog_offload_init(struct bpf_prog *prog, union bpf_attr *attr); | |
783 | ||
0d830032 | 784 | static inline bool bpf_prog_is_dev_bound(const struct bpf_prog_aux *aux) |
ab3f0063 | 785 | { |
9a18eedb | 786 | return aux->offload_requested; |
ab3f0063 | 787 | } |
a3884572 JK |
788 | |
789 | static inline bool bpf_map_is_dev_bound(struct bpf_map *map) | |
790 | { | |
791 | return unlikely(map->ops == &bpf_map_offload_ops); | |
792 | } | |
793 | ||
794 | struct bpf_map *bpf_map_offload_map_alloc(union bpf_attr *attr); | |
795 | void bpf_map_offload_map_free(struct bpf_map *map); | |
ab3f0063 JK |
796 | #else |
797 | static inline int bpf_prog_offload_init(struct bpf_prog *prog, | |
798 | union bpf_attr *attr) | |
799 | { | |
800 | return -EOPNOTSUPP; | |
801 | } | |
802 | ||
803 | static inline bool bpf_prog_is_dev_bound(struct bpf_prog_aux *aux) | |
804 | { | |
805 | return false; | |
806 | } | |
a3884572 JK |
807 | |
808 | static inline bool bpf_map_is_dev_bound(struct bpf_map *map) | |
809 | { | |
810 | return false; | |
811 | } | |
812 | ||
813 | static inline struct bpf_map *bpf_map_offload_map_alloc(union bpf_attr *attr) | |
814 | { | |
815 | return ERR_PTR(-EOPNOTSUPP); | |
816 | } | |
817 | ||
818 | static inline void bpf_map_offload_map_free(struct bpf_map *map) | |
819 | { | |
820 | } | |
ab3f0063 JK |
821 | #endif /* CONFIG_NET && CONFIG_BPF_SYSCALL */ |
822 | ||
604326b4 DB |
823 | #if defined(CONFIG_BPF_STREAM_PARSER) |
824 | int sock_map_prog_update(struct bpf_map *map, struct bpf_prog *prog, u32 which); | |
825 | int sock_map_get_from_fd(const union bpf_attr *attr, struct bpf_prog *prog); | |
6bdc9c4c | 826 | #else |
604326b4 DB |
827 | static inline int sock_map_prog_update(struct bpf_map *map, |
828 | struct bpf_prog *prog, u32 which) | |
464bc0fd JF |
829 | { |
830 | return -EOPNOTSUPP; | |
831 | } | |
fdb5c453 | 832 | |
604326b4 DB |
833 | static inline int sock_map_get_from_fd(const union bpf_attr *attr, |
834 | struct bpf_prog *prog) | |
fdb5c453 SY |
835 | { |
836 | return -EINVAL; | |
837 | } | |
6bdc9c4c JF |
838 | #endif |
839 | ||
fbfc504a BT |
840 | #if defined(CONFIG_XDP_SOCKETS) |
841 | struct xdp_sock; | |
842 | struct xdp_sock *__xsk_map_lookup_elem(struct bpf_map *map, u32 key); | |
843 | int __xsk_map_redirect(struct bpf_map *map, struct xdp_buff *xdp, | |
844 | struct xdp_sock *xs); | |
845 | void __xsk_map_flush(struct bpf_map *map); | |
846 | #else | |
847 | struct xdp_sock; | |
848 | static inline struct xdp_sock *__xsk_map_lookup_elem(struct bpf_map *map, | |
849 | u32 key) | |
850 | { | |
851 | return NULL; | |
852 | } | |
853 | ||
854 | static inline int __xsk_map_redirect(struct bpf_map *map, struct xdp_buff *xdp, | |
855 | struct xdp_sock *xs) | |
856 | { | |
857 | return -EOPNOTSUPP; | |
858 | } | |
859 | ||
860 | static inline void __xsk_map_flush(struct bpf_map *map) | |
861 | { | |
862 | } | |
863 | #endif | |
864 | ||
5dc4c4b7 MKL |
865 | #if defined(CONFIG_INET) && defined(CONFIG_BPF_SYSCALL) |
866 | void bpf_sk_reuseport_detach(struct sock *sk); | |
867 | int bpf_fd_reuseport_array_lookup_elem(struct bpf_map *map, void *key, | |
868 | void *value); | |
869 | int bpf_fd_reuseport_array_update_elem(struct bpf_map *map, void *key, | |
870 | void *value, u64 map_flags); | |
871 | #else | |
872 | static inline void bpf_sk_reuseport_detach(struct sock *sk) | |
873 | { | |
874 | } | |
875 | ||
876 | #ifdef CONFIG_BPF_SYSCALL | |
877 | static inline int bpf_fd_reuseport_array_lookup_elem(struct bpf_map *map, | |
878 | void *key, void *value) | |
879 | { | |
880 | return -EOPNOTSUPP; | |
881 | } | |
882 | ||
883 | static inline int bpf_fd_reuseport_array_update_elem(struct bpf_map *map, | |
884 | void *key, void *value, | |
885 | u64 map_flags) | |
886 | { | |
887 | return -EOPNOTSUPP; | |
888 | } | |
889 | #endif /* CONFIG_BPF_SYSCALL */ | |
890 | #endif /* defined(CONFIG_INET) && defined(CONFIG_BPF_SYSCALL) */ | |
891 | ||
d0003ec0 | 892 | /* verifier prototypes for helper functions called from eBPF programs */ |
a2c83fff DB |
893 | extern const struct bpf_func_proto bpf_map_lookup_elem_proto; |
894 | extern const struct bpf_func_proto bpf_map_update_elem_proto; | |
895 | extern const struct bpf_func_proto bpf_map_delete_elem_proto; | |
f1a2e44a MV |
896 | extern const struct bpf_func_proto bpf_map_push_elem_proto; |
897 | extern const struct bpf_func_proto bpf_map_pop_elem_proto; | |
898 | extern const struct bpf_func_proto bpf_map_peek_elem_proto; | |
d0003ec0 | 899 | |
03e69b50 | 900 | extern const struct bpf_func_proto bpf_get_prandom_u32_proto; |
c04167ce | 901 | extern const struct bpf_func_proto bpf_get_smp_processor_id_proto; |
2d0e30c3 | 902 | extern const struct bpf_func_proto bpf_get_numa_node_id_proto; |
04fd61ab | 903 | extern const struct bpf_func_proto bpf_tail_call_proto; |
17ca8cbf | 904 | extern const struct bpf_func_proto bpf_ktime_get_ns_proto; |
ffeedafb AS |
905 | extern const struct bpf_func_proto bpf_get_current_pid_tgid_proto; |
906 | extern const struct bpf_func_proto bpf_get_current_uid_gid_proto; | |
907 | extern const struct bpf_func_proto bpf_get_current_comm_proto; | |
d5a3b1f6 | 908 | extern const struct bpf_func_proto bpf_get_stackid_proto; |
c195651e | 909 | extern const struct bpf_func_proto bpf_get_stack_proto; |
174a79ff | 910 | extern const struct bpf_func_proto bpf_sock_map_update_proto; |
81110384 | 911 | extern const struct bpf_func_proto bpf_sock_hash_update_proto; |
bf6fa2c8 | 912 | extern const struct bpf_func_proto bpf_get_current_cgroup_id_proto; |
604326b4 DB |
913 | extern const struct bpf_func_proto bpf_msg_redirect_hash_proto; |
914 | extern const struct bpf_func_proto bpf_msg_redirect_map_proto; | |
915 | extern const struct bpf_func_proto bpf_sk_redirect_hash_proto; | |
916 | extern const struct bpf_func_proto bpf_sk_redirect_map_proto; | |
d83525ca AS |
917 | extern const struct bpf_func_proto bpf_spin_lock_proto; |
918 | extern const struct bpf_func_proto bpf_spin_unlock_proto; | |
cd339431 RG |
919 | extern const struct bpf_func_proto bpf_get_local_storage_proto; |
920 | ||
3ad00405 DB |
921 | /* Shared helpers among cBPF and eBPF. */ |
922 | void bpf_user_rnd_init_once(void); | |
923 | u64 bpf_user_rnd_u32(u64 r1, u64 r2, u64 r3, u64 r4, u64 r5); | |
924 | ||
c64b7983 | 925 | #if defined(CONFIG_NET) |
46f8bc92 MKL |
926 | bool bpf_sock_common_is_valid_access(int off, int size, |
927 | enum bpf_access_type type, | |
928 | struct bpf_insn_access_aux *info); | |
c64b7983 JS |
929 | bool bpf_sock_is_valid_access(int off, int size, enum bpf_access_type type, |
930 | struct bpf_insn_access_aux *info); | |
931 | u32 bpf_sock_convert_ctx_access(enum bpf_access_type type, | |
932 | const struct bpf_insn *si, | |
933 | struct bpf_insn *insn_buf, | |
934 | struct bpf_prog *prog, | |
935 | u32 *target_size); | |
936 | #else | |
46f8bc92 MKL |
937 | static inline bool bpf_sock_common_is_valid_access(int off, int size, |
938 | enum bpf_access_type type, | |
939 | struct bpf_insn_access_aux *info) | |
940 | { | |
941 | return false; | |
942 | } | |
c64b7983 JS |
943 | static inline bool bpf_sock_is_valid_access(int off, int size, |
944 | enum bpf_access_type type, | |
945 | struct bpf_insn_access_aux *info) | |
946 | { | |
947 | return false; | |
948 | } | |
949 | static inline u32 bpf_sock_convert_ctx_access(enum bpf_access_type type, | |
950 | const struct bpf_insn *si, | |
951 | struct bpf_insn *insn_buf, | |
952 | struct bpf_prog *prog, | |
953 | u32 *target_size) | |
954 | { | |
955 | return 0; | |
956 | } | |
957 | #endif | |
958 | ||
99c55f7d | 959 | #endif /* _LINUX_BPF_H */ |