Commit | Line | Data |
---|---|---|
25763b3c | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
99c55f7d | 2 | /* Copyright (c) 2011-2014 PLUMgrid, http://plumgrid.com |
99c55f7d AS |
3 | */ |
4 | #ifndef _LINUX_BPF_H | |
5 | #define _LINUX_BPF_H 1 | |
6 | ||
7 | #include <uapi/linux/bpf.h> | |
74451e66 | 8 | |
99c55f7d | 9 | #include <linux/workqueue.h> |
db20fd2b | 10 | #include <linux/file.h> |
b121d1e7 | 11 | #include <linux/percpu.h> |
002245cc | 12 | #include <linux/err.h> |
74451e66 | 13 | #include <linux/rbtree_latch.h> |
d6e1e46f | 14 | #include <linux/numa.h> |
fc970227 | 15 | #include <linux/mm_types.h> |
ab3f0063 | 16 | #include <linux/wait.h> |
fec56f58 AS |
17 | #include <linux/refcount.h> |
18 | #include <linux/mutex.h> | |
85d33df3 | 19 | #include <linux/module.h> |
bfea9a85 | 20 | #include <linux/kallsyms.h> |
2c78ee89 | 21 | #include <linux/capability.h> |
48edc1f7 RG |
22 | #include <linux/sched/mm.h> |
23 | #include <linux/slab.h> | |
e21aa341 | 24 | #include <linux/percpu-refcount.h> |
af2ac3e1 | 25 | #include <linux/bpfptr.h> |
99c55f7d | 26 | |
cae1927c | 27 | struct bpf_verifier_env; |
9e15db66 | 28 | struct bpf_verifier_log; |
3b1efb19 | 29 | struct perf_event; |
174a79ff | 30 | struct bpf_prog; |
da765a2f | 31 | struct bpf_prog_aux; |
99c55f7d | 32 | struct bpf_map; |
4f738adb | 33 | struct sock; |
a26ca7c9 | 34 | struct seq_file; |
1b2b234b | 35 | struct btf; |
e8d2bec0 | 36 | struct btf_type; |
3dec541b | 37 | struct exception_table_entry; |
ae24345d | 38 | struct seq_operations; |
f9c79272 | 39 | struct bpf_iter_aux_info; |
f836a56e KS |
40 | struct bpf_local_storage; |
41 | struct bpf_local_storage_map; | |
36e68442 | 42 | struct kobject; |
48edc1f7 | 43 | struct mem_cgroup; |
861de02e | 44 | struct module; |
69c087ba | 45 | struct bpf_func_state; |
99c55f7d | 46 | |
1b9ed84e QM |
47 | extern struct idr btf_idr; |
48 | extern spinlock_t btf_idr_lock; | |
36e68442 | 49 | extern struct kobject *btf_kobj; |
1b9ed84e | 50 | |
f9c79272 YS |
51 | typedef int (*bpf_iter_init_seq_priv_t)(void *private_data, |
52 | struct bpf_iter_aux_info *aux); | |
14fc6bd6 YS |
53 | typedef void (*bpf_iter_fini_seq_priv_t)(void *private_data); |
54 | struct bpf_iter_seq_info { | |
55 | const struct seq_operations *seq_ops; | |
56 | bpf_iter_init_seq_priv_t init_seq_private; | |
57 | bpf_iter_fini_seq_priv_t fini_seq_private; | |
58 | u32 seq_priv_size; | |
59 | }; | |
60 | ||
5d903493 | 61 | /* map is generic key/value storage optionally accessible by eBPF programs */ |
99c55f7d AS |
62 | struct bpf_map_ops { |
63 | /* funcs callable from userspace (via syscall) */ | |
1110f3a9 | 64 | int (*map_alloc_check)(union bpf_attr *attr); |
99c55f7d | 65 | struct bpf_map *(*map_alloc)(union bpf_attr *attr); |
61d1b6a4 DB |
66 | void (*map_release)(struct bpf_map *map, struct file *map_file); |
67 | void (*map_free)(struct bpf_map *map); | |
db20fd2b | 68 | int (*map_get_next_key)(struct bpf_map *map, void *key, void *next_key); |
ba6b8de4 | 69 | void (*map_release_uref)(struct bpf_map *map); |
c6110222 | 70 | void *(*map_lookup_elem_sys_only)(struct bpf_map *map, void *key); |
cb4d03ab BV |
71 | int (*map_lookup_batch)(struct bpf_map *map, const union bpf_attr *attr, |
72 | union bpf_attr __user *uattr); | |
3e87f192 DS |
73 | int (*map_lookup_and_delete_elem)(struct bpf_map *map, void *key, |
74 | void *value, u64 flags); | |
05799638 YS |
75 | int (*map_lookup_and_delete_batch)(struct bpf_map *map, |
76 | const union bpf_attr *attr, | |
77 | union bpf_attr __user *uattr); | |
aa2e93b8 BV |
78 | int (*map_update_batch)(struct bpf_map *map, const union bpf_attr *attr, |
79 | union bpf_attr __user *uattr); | |
80 | int (*map_delete_batch)(struct bpf_map *map, const union bpf_attr *attr, | |
81 | union bpf_attr __user *uattr); | |
db20fd2b AS |
82 | |
83 | /* funcs callable from userspace and from eBPF programs */ | |
84 | void *(*map_lookup_elem)(struct bpf_map *map, void *key); | |
3274f520 | 85 | int (*map_update_elem)(struct bpf_map *map, void *key, void *value, u64 flags); |
db20fd2b | 86 | int (*map_delete_elem)(struct bpf_map *map, void *key); |
f1a2e44a MV |
87 | int (*map_push_elem)(struct bpf_map *map, void *value, u64 flags); |
88 | int (*map_pop_elem)(struct bpf_map *map, void *value); | |
89 | int (*map_peek_elem)(struct bpf_map *map, void *value); | |
2a36f0b9 WN |
90 | |
91 | /* funcs called by prog_array and perf_event_array map */ | |
d056a788 DB |
92 | void *(*map_fd_get_ptr)(struct bpf_map *map, struct file *map_file, |
93 | int fd); | |
94 | void (*map_fd_put_ptr)(void *ptr); | |
4a8f87e6 | 95 | int (*map_gen_lookup)(struct bpf_map *map, struct bpf_insn *insn_buf); |
14dc6f04 | 96 | u32 (*map_fd_sys_lookup_elem)(void *ptr); |
a26ca7c9 MKL |
97 | void (*map_seq_show_elem)(struct bpf_map *map, void *key, |
98 | struct seq_file *m); | |
e8d2bec0 | 99 | int (*map_check_btf)(const struct bpf_map *map, |
1b2b234b | 100 | const struct btf *btf, |
e8d2bec0 DB |
101 | const struct btf_type *key_type, |
102 | const struct btf_type *value_type); | |
d8eca5bb | 103 | |
da765a2f DB |
104 | /* Prog poke tracking helpers. */ |
105 | int (*map_poke_track)(struct bpf_map *map, struct bpf_prog_aux *aux); | |
106 | void (*map_poke_untrack)(struct bpf_map *map, struct bpf_prog_aux *aux); | |
107 | void (*map_poke_run)(struct bpf_map *map, u32 key, struct bpf_prog *old, | |
108 | struct bpf_prog *new); | |
109 | ||
d8eca5bb DB |
110 | /* Direct value access helpers. */ |
111 | int (*map_direct_value_addr)(const struct bpf_map *map, | |
112 | u64 *imm, u32 off); | |
113 | int (*map_direct_value_meta)(const struct bpf_map *map, | |
114 | u64 imm, u32 *off); | |
fc970227 | 115 | int (*map_mmap)(struct bpf_map *map, struct vm_area_struct *vma); |
457f4436 AN |
116 | __poll_t (*map_poll)(struct bpf_map *map, struct file *filp, |
117 | struct poll_table_struct *pts); | |
41c48f3a | 118 | |
f836a56e KS |
119 | /* Functions called by bpf_local_storage maps */ |
120 | int (*map_local_storage_charge)(struct bpf_local_storage_map *smap, | |
121 | void *owner, u32 size); | |
122 | void (*map_local_storage_uncharge)(struct bpf_local_storage_map *smap, | |
123 | void *owner, u32 size); | |
124 | struct bpf_local_storage __rcu ** (*map_owner_storage_ptr)(void *owner); | |
f4d05259 | 125 | |
e6a4750f BT |
126 | /* Misc helpers.*/ |
127 | int (*map_redirect)(struct bpf_map *map, u32 ifindex, u64 flags); | |
128 | ||
f4d05259 MKL |
129 | /* map_meta_equal must be implemented for maps that can be |
130 | * used as an inner map. It is a runtime check to ensure | |
131 | * an inner map can be inserted to an outer map. | |
132 | * | |
133 | * Some properties of the inner map has been used during the | |
134 | * verification time. When inserting an inner map at the runtime, | |
135 | * map_meta_equal has to ensure the inserting map has the same | |
136 | * properties that the verifier has used earlier. | |
137 | */ | |
138 | bool (*map_meta_equal)(const struct bpf_map *meta0, | |
139 | const struct bpf_map *meta1); | |
140 | ||
69c087ba YS |
141 | |
142 | int (*map_set_for_each_callback_args)(struct bpf_verifier_env *env, | |
143 | struct bpf_func_state *caller, | |
144 | struct bpf_func_state *callee); | |
145 | int (*map_for_each_callback)(struct bpf_map *map, void *callback_fn, | |
146 | void *callback_ctx, u64 flags); | |
147 | ||
41c48f3a AI |
148 | /* BTF name and id of struct allocated by map_alloc */ |
149 | const char * const map_btf_name; | |
150 | int *map_btf_id; | |
a5cbe05a YS |
151 | |
152 | /* bpf_iter info used to open a seq_file */ | |
153 | const struct bpf_iter_seq_info *iter_seq_info; | |
99c55f7d AS |
154 | }; |
155 | ||
156 | struct bpf_map { | |
a26ca7c9 | 157 | /* The first two cachelines with read-mostly members of which some |
be95a845 DB |
158 | * are also accessed in fast-path (e.g. ops, max_entries). |
159 | */ | |
160 | const struct bpf_map_ops *ops ____cacheline_aligned; | |
161 | struct bpf_map *inner_map_meta; | |
162 | #ifdef CONFIG_SECURITY | |
163 | void *security; | |
164 | #endif | |
99c55f7d AS |
165 | enum bpf_map_type map_type; |
166 | u32 key_size; | |
167 | u32 value_size; | |
168 | u32 max_entries; | |
6c905981 | 169 | u32 map_flags; |
d83525ca | 170 | int spin_lock_off; /* >=0 valid offset, <0 error */ |
f3f1c054 | 171 | u32 id; |
96eabe7a | 172 | int numa_node; |
9b2cf328 MKL |
173 | u32 btf_key_type_id; |
174 | u32 btf_value_type_id; | |
a26ca7c9 | 175 | struct btf *btf; |
48edc1f7 RG |
176 | #ifdef CONFIG_MEMCG_KMEM |
177 | struct mem_cgroup *memcg; | |
178 | #endif | |
fc970227 | 179 | char name[BPF_OBJ_NAME_LEN]; |
85d33df3 | 180 | u32 btf_vmlinux_value_type_id; |
2c78ee89 | 181 | bool bypass_spec_v1; |
fc970227 AN |
182 | bool frozen; /* write-once; write-protected by freeze_mutex */ |
183 | /* 22 bytes hole */ | |
be95a845 | 184 | |
a26ca7c9 | 185 | /* The 3rd and 4th cacheline with misc members to avoid false sharing |
be95a845 DB |
186 | * particularly with refcounting. |
187 | */ | |
1e0bd5a0 AN |
188 | atomic64_t refcnt ____cacheline_aligned; |
189 | atomic64_t usercnt; | |
be95a845 | 190 | struct work_struct work; |
fc970227 AN |
191 | struct mutex freeze_mutex; |
192 | u64 writecnt; /* writable mmap cnt; protected by freeze_mutex */ | |
99c55f7d AS |
193 | }; |
194 | ||
d83525ca AS |
195 | static inline bool map_value_has_spin_lock(const struct bpf_map *map) |
196 | { | |
197 | return map->spin_lock_off >= 0; | |
198 | } | |
199 | ||
200 | static inline void check_and_init_map_lock(struct bpf_map *map, void *dst) | |
201 | { | |
202 | if (likely(!map_value_has_spin_lock(map))) | |
203 | return; | |
204 | *(struct bpf_spin_lock *)(dst + map->spin_lock_off) = | |
205 | (struct bpf_spin_lock){}; | |
206 | } | |
207 | ||
208 | /* copy everything but bpf_spin_lock */ | |
209 | static inline void copy_map_value(struct bpf_map *map, void *dst, void *src) | |
210 | { | |
211 | if (unlikely(map_value_has_spin_lock(map))) { | |
212 | u32 off = map->spin_lock_off; | |
213 | ||
214 | memcpy(dst, src, off); | |
215 | memcpy(dst + off + sizeof(struct bpf_spin_lock), | |
216 | src + off + sizeof(struct bpf_spin_lock), | |
217 | map->value_size - off - sizeof(struct bpf_spin_lock)); | |
218 | } else { | |
219 | memcpy(dst, src, map->value_size); | |
220 | } | |
221 | } | |
96049f3a AS |
222 | void copy_map_value_locked(struct bpf_map *map, void *dst, void *src, |
223 | bool lock_src); | |
8e7ae251 | 224 | int bpf_obj_name_cpy(char *dst, const char *src, unsigned int size); |
d83525ca | 225 | |
602144c2 | 226 | struct bpf_offload_dev; |
a3884572 JK |
227 | struct bpf_offloaded_map; |
228 | ||
229 | struct bpf_map_dev_ops { | |
230 | int (*map_get_next_key)(struct bpf_offloaded_map *map, | |
231 | void *key, void *next_key); | |
232 | int (*map_lookup_elem)(struct bpf_offloaded_map *map, | |
233 | void *key, void *value); | |
234 | int (*map_update_elem)(struct bpf_offloaded_map *map, | |
235 | void *key, void *value, u64 flags); | |
236 | int (*map_delete_elem)(struct bpf_offloaded_map *map, void *key); | |
237 | }; | |
238 | ||
239 | struct bpf_offloaded_map { | |
240 | struct bpf_map map; | |
241 | struct net_device *netdev; | |
242 | const struct bpf_map_dev_ops *dev_ops; | |
243 | void *dev_priv; | |
244 | struct list_head offloads; | |
245 | }; | |
246 | ||
247 | static inline struct bpf_offloaded_map *map_to_offmap(struct bpf_map *map) | |
248 | { | |
249 | return container_of(map, struct bpf_offloaded_map, map); | |
250 | } | |
251 | ||
0cd3cbed JK |
252 | static inline bool bpf_map_offload_neutral(const struct bpf_map *map) |
253 | { | |
254 | return map->map_type == BPF_MAP_TYPE_PERF_EVENT_ARRAY; | |
255 | } | |
256 | ||
a26ca7c9 MKL |
257 | static inline bool bpf_map_support_seq_show(const struct bpf_map *map) |
258 | { | |
85d33df3 MKL |
259 | return (map->btf_value_type_id || map->btf_vmlinux_value_type_id) && |
260 | map->ops->map_seq_show_elem; | |
a26ca7c9 MKL |
261 | } |
262 | ||
e8d2bec0 | 263 | int map_check_no_btf(const struct bpf_map *map, |
1b2b234b | 264 | const struct btf *btf, |
e8d2bec0 DB |
265 | const struct btf_type *key_type, |
266 | const struct btf_type *value_type); | |
267 | ||
f4d05259 MKL |
268 | bool bpf_map_meta_equal(const struct bpf_map *meta0, |
269 | const struct bpf_map *meta1); | |
270 | ||
a3884572 JK |
271 | extern const struct bpf_map_ops bpf_map_offload_ops; |
272 | ||
17a52670 AS |
273 | /* function argument constraints */ |
274 | enum bpf_arg_type { | |
80f1d68c | 275 | ARG_DONTCARE = 0, /* unused argument in helper function */ |
17a52670 AS |
276 | |
277 | /* the following constraints used to prototype | |
278 | * bpf_map_lookup/update/delete_elem() functions | |
279 | */ | |
280 | ARG_CONST_MAP_PTR, /* const argument used as pointer to bpf_map */ | |
281 | ARG_PTR_TO_MAP_KEY, /* pointer to stack used as map key */ | |
282 | ARG_PTR_TO_MAP_VALUE, /* pointer to stack used as map value */ | |
2ea864c5 | 283 | ARG_PTR_TO_UNINIT_MAP_VALUE, /* pointer to valid memory used to store a map value */ |
6ac99e8f | 284 | ARG_PTR_TO_MAP_VALUE_OR_NULL, /* pointer to stack used as map value or NULL */ |
17a52670 AS |
285 | |
286 | /* the following constraints used to prototype bpf_memcmp() and other | |
287 | * functions that access data on eBPF program stack | |
288 | */ | |
39f19ebb | 289 | ARG_PTR_TO_MEM, /* pointer to valid memory (stack, packet, map value) */ |
db1ac496 | 290 | ARG_PTR_TO_MEM_OR_NULL, /* pointer to valid memory or NULL */ |
39f19ebb AS |
291 | ARG_PTR_TO_UNINIT_MEM, /* pointer to memory does not need to be initialized, |
292 | * helper function must fill all bytes or clear | |
293 | * them in error case. | |
435faee1 DB |
294 | */ |
295 | ||
39f19ebb AS |
296 | ARG_CONST_SIZE, /* number of bytes accessed from memory */ |
297 | ARG_CONST_SIZE_OR_ZERO, /* number of bytes accessed from memory or 0 */ | |
80f1d68c | 298 | |
608cd71a | 299 | ARG_PTR_TO_CTX, /* pointer to context */ |
f318903c | 300 | ARG_PTR_TO_CTX_OR_NULL, /* pointer to context or NULL */ |
80f1d68c | 301 | ARG_ANYTHING, /* any (initialized) argument is ok */ |
d83525ca | 302 | ARG_PTR_TO_SPIN_LOCK, /* pointer to bpf_spin_lock */ |
46f8bc92 | 303 | ARG_PTR_TO_SOCK_COMMON, /* pointer to sock_common */ |
57c3bb72 AI |
304 | ARG_PTR_TO_INT, /* pointer to int */ |
305 | ARG_PTR_TO_LONG, /* pointer to long */ | |
6ac99e8f | 306 | ARG_PTR_TO_SOCKET, /* pointer to bpf_sock (fullsock) */ |
e9ddbb77 | 307 | ARG_PTR_TO_SOCKET_OR_NULL, /* pointer to bpf_sock (fullsock) or NULL */ |
a7658e1a | 308 | ARG_PTR_TO_BTF_ID, /* pointer to in-kernel struct */ |
457f4436 AN |
309 | ARG_PTR_TO_ALLOC_MEM, /* pointer to dynamically allocated memory */ |
310 | ARG_PTR_TO_ALLOC_MEM_OR_NULL, /* pointer to dynamically allocated memory or NULL */ | |
311 | ARG_CONST_ALLOC_SIZE_OR_ZERO, /* number of allocated bytes requested */ | |
1df8f55a | 312 | ARG_PTR_TO_BTF_ID_SOCK_COMMON, /* pointer to in-kernel sock_common or bpf-mirrored bpf_sock */ |
eaa6bcb7 | 313 | ARG_PTR_TO_PERCPU_BTF_ID, /* pointer to in-kernel percpu type */ |
69c087ba YS |
314 | ARG_PTR_TO_FUNC, /* pointer to a bpf program function */ |
315 | ARG_PTR_TO_STACK_OR_NULL, /* pointer to stack or NULL */ | |
fff13c4b | 316 | ARG_PTR_TO_CONST_STR, /* pointer to a null terminated read-only string */ |
f79e7ea5 | 317 | __BPF_ARG_TYPE_MAX, |
17a52670 AS |
318 | }; |
319 | ||
320 | /* type of values returned from helper functions */ | |
321 | enum bpf_return_type { | |
322 | RET_INTEGER, /* function returns integer */ | |
323 | RET_VOID, /* function doesn't return anything */ | |
3e6a4b3e | 324 | RET_PTR_TO_MAP_VALUE, /* returns a pointer to map elem value */ |
17a52670 | 325 | RET_PTR_TO_MAP_VALUE_OR_NULL, /* returns a pointer to map elem value or NULL */ |
c64b7983 | 326 | RET_PTR_TO_SOCKET_OR_NULL, /* returns a pointer to a socket or NULL */ |
655a51e5 | 327 | RET_PTR_TO_TCP_SOCK_OR_NULL, /* returns a pointer to a tcp_sock or NULL */ |
85a51f8c | 328 | RET_PTR_TO_SOCK_COMMON_OR_NULL, /* returns a pointer to a sock_common or NULL */ |
457f4436 | 329 | RET_PTR_TO_ALLOC_MEM_OR_NULL, /* returns a pointer to dynamically allocated memory or NULL */ |
af7ec138 | 330 | RET_PTR_TO_BTF_ID_OR_NULL, /* returns a pointer to a btf_id or NULL */ |
eaa6bcb7 | 331 | RET_PTR_TO_MEM_OR_BTF_ID_OR_NULL, /* returns a pointer to a valid memory or a btf_id or NULL */ |
63d9b80d | 332 | RET_PTR_TO_MEM_OR_BTF_ID, /* returns a pointer to a valid memory or a btf_id */ |
3ca1032a | 333 | RET_PTR_TO_BTF_ID, /* returns a pointer to a btf_id */ |
17a52670 AS |
334 | }; |
335 | ||
09756af4 AS |
336 | /* eBPF function prototype used by verifier to allow BPF_CALLs from eBPF programs |
337 | * to in-kernel helper functions and for adjusting imm32 field in BPF_CALL | |
338 | * instructions after verifying | |
339 | */ | |
340 | struct bpf_func_proto { | |
341 | u64 (*func)(u64 r1, u64 r2, u64 r3, u64 r4, u64 r5); | |
342 | bool gpl_only; | |
36bbef52 | 343 | bool pkt_access; |
17a52670 | 344 | enum bpf_return_type ret_type; |
a7658e1a AS |
345 | union { |
346 | struct { | |
347 | enum bpf_arg_type arg1_type; | |
348 | enum bpf_arg_type arg2_type; | |
349 | enum bpf_arg_type arg3_type; | |
350 | enum bpf_arg_type arg4_type; | |
351 | enum bpf_arg_type arg5_type; | |
352 | }; | |
353 | enum bpf_arg_type arg_type[5]; | |
354 | }; | |
9436ef6e LB |
355 | union { |
356 | struct { | |
357 | u32 *arg1_btf_id; | |
358 | u32 *arg2_btf_id; | |
359 | u32 *arg3_btf_id; | |
360 | u32 *arg4_btf_id; | |
361 | u32 *arg5_btf_id; | |
362 | }; | |
363 | u32 *arg_btf_id[5]; | |
364 | }; | |
af7ec138 | 365 | int *ret_btf_id; /* return value btf_id */ |
eae2e83e | 366 | bool (*allowed)(const struct bpf_prog *prog); |
17a52670 AS |
367 | }; |
368 | ||
369 | /* bpf_context is intentionally undefined structure. Pointer to bpf_context is | |
370 | * the first argument to eBPF programs. | |
371 | * For socket filters: 'struct bpf_context *' == 'struct sk_buff *' | |
372 | */ | |
373 | struct bpf_context; | |
374 | ||
375 | enum bpf_access_type { | |
376 | BPF_READ = 1, | |
377 | BPF_WRITE = 2 | |
09756af4 AS |
378 | }; |
379 | ||
19de99f7 | 380 | /* types of values stored in eBPF registers */ |
f1174f77 EC |
381 | /* Pointer types represent: |
382 | * pointer | |
383 | * pointer + imm | |
384 | * pointer + (u16) var | |
385 | * pointer + (u16) var + imm | |
386 | * if (range > 0) then [ptr, ptr + range - off) is safe to access | |
387 | * if (id > 0) means that some 'var' was added | |
388 | * if (off > 0) means that 'imm' was added | |
389 | */ | |
19de99f7 AS |
390 | enum bpf_reg_type { |
391 | NOT_INIT = 0, /* nothing was written into register */ | |
f1174f77 | 392 | SCALAR_VALUE, /* reg doesn't contain a valid pointer */ |
19de99f7 AS |
393 | PTR_TO_CTX, /* reg points to bpf_context */ |
394 | CONST_PTR_TO_MAP, /* reg points to struct bpf_map */ | |
395 | PTR_TO_MAP_VALUE, /* reg points to map element value */ | |
396 | PTR_TO_MAP_VALUE_OR_NULL,/* points to map elem value or NULL */ | |
f1174f77 | 397 | PTR_TO_STACK, /* reg == frame_pointer + offset */ |
de8f3a83 | 398 | PTR_TO_PACKET_META, /* skb->data - meta_len */ |
f1174f77 | 399 | PTR_TO_PACKET, /* reg points to skb->data */ |
19de99f7 | 400 | PTR_TO_PACKET_END, /* skb->data + headlen */ |
d58e468b | 401 | PTR_TO_FLOW_KEYS, /* reg points to bpf_flow_keys */ |
c64b7983 JS |
402 | PTR_TO_SOCKET, /* reg points to struct bpf_sock */ |
403 | PTR_TO_SOCKET_OR_NULL, /* reg points to struct bpf_sock or NULL */ | |
46f8bc92 MKL |
404 | PTR_TO_SOCK_COMMON, /* reg points to sock_common */ |
405 | PTR_TO_SOCK_COMMON_OR_NULL, /* reg points to sock_common or NULL */ | |
655a51e5 MKL |
406 | PTR_TO_TCP_SOCK, /* reg points to struct tcp_sock */ |
407 | PTR_TO_TCP_SOCK_OR_NULL, /* reg points to struct tcp_sock or NULL */ | |
9df1c28b | 408 | PTR_TO_TP_BUFFER, /* reg points to a writable raw tp's buffer */ |
fada7fdc | 409 | PTR_TO_XDP_SOCK, /* reg points to struct xdp_sock */ |
ba5f4cfe JF |
410 | /* PTR_TO_BTF_ID points to a kernel struct that does not need |
411 | * to be null checked by the BPF program. This does not imply the | |
412 | * pointer is _not_ null and in practice this can easily be a null | |
413 | * pointer when reading pointer chains. The assumption is program | |
414 | * context will handle null pointer dereference typically via fault | |
415 | * handling. The verifier must keep this in mind and can make no | |
416 | * assumptions about null or non-null when doing branch analysis. | |
417 | * Further, when passed into helpers the helpers can not, without | |
418 | * additional context, assume the value is non-null. | |
419 | */ | |
420 | PTR_TO_BTF_ID, | |
421 | /* PTR_TO_BTF_ID_OR_NULL points to a kernel struct that has not | |
422 | * been checked for null. Used primarily to inform the verifier | |
423 | * an explicit null check is required for this struct. | |
424 | */ | |
425 | PTR_TO_BTF_ID_OR_NULL, | |
457f4436 AN |
426 | PTR_TO_MEM, /* reg points to valid memory region */ |
427 | PTR_TO_MEM_OR_NULL, /* reg points to valid memory region or NULL */ | |
afbf21dc YS |
428 | PTR_TO_RDONLY_BUF, /* reg points to a readonly buffer */ |
429 | PTR_TO_RDONLY_BUF_OR_NULL, /* reg points to a readonly buffer or NULL */ | |
430 | PTR_TO_RDWR_BUF, /* reg points to a read/write buffer */ | |
431 | PTR_TO_RDWR_BUF_OR_NULL, /* reg points to a read/write buffer or NULL */ | |
eaa6bcb7 | 432 | PTR_TO_PERCPU_BTF_ID, /* reg points to a percpu kernel variable */ |
69c087ba YS |
433 | PTR_TO_FUNC, /* reg points to a bpf program function */ |
434 | PTR_TO_MAP_KEY, /* reg points to a map element key */ | |
e6ac2450 | 435 | __BPF_REG_TYPE_MAX, |
19de99f7 AS |
436 | }; |
437 | ||
23994631 YS |
438 | /* The information passed from prog-specific *_is_valid_access |
439 | * back to the verifier. | |
440 | */ | |
441 | struct bpf_insn_access_aux { | |
442 | enum bpf_reg_type reg_type; | |
9e15db66 AS |
443 | union { |
444 | int ctx_field_size; | |
22dc4a0f AN |
445 | struct { |
446 | struct btf *btf; | |
447 | u32 btf_id; | |
448 | }; | |
9e15db66 AS |
449 | }; |
450 | struct bpf_verifier_log *log; /* for verbose logs */ | |
23994631 YS |
451 | }; |
452 | ||
f96da094 DB |
453 | static inline void |
454 | bpf_ctx_record_field_size(struct bpf_insn_access_aux *aux, u32 size) | |
455 | { | |
456 | aux->ctx_field_size = size; | |
457 | } | |
458 | ||
7de16e3a JK |
459 | struct bpf_prog_ops { |
460 | int (*test_run)(struct bpf_prog *prog, const union bpf_attr *kattr, | |
461 | union bpf_attr __user *uattr); | |
462 | }; | |
463 | ||
09756af4 AS |
464 | struct bpf_verifier_ops { |
465 | /* return eBPF function prototype for verification */ | |
5e43f899 AI |
466 | const struct bpf_func_proto * |
467 | (*get_func_proto)(enum bpf_func_id func_id, | |
468 | const struct bpf_prog *prog); | |
17a52670 AS |
469 | |
470 | /* return true if 'size' wide access at offset 'off' within bpf_context | |
471 | * with 'type' (read or write) is allowed | |
472 | */ | |
19de99f7 | 473 | bool (*is_valid_access)(int off, int size, enum bpf_access_type type, |
5e43f899 | 474 | const struct bpf_prog *prog, |
23994631 | 475 | struct bpf_insn_access_aux *info); |
36bbef52 DB |
476 | int (*gen_prologue)(struct bpf_insn *insn, bool direct_write, |
477 | const struct bpf_prog *prog); | |
e0cea7ce DB |
478 | int (*gen_ld_abs)(const struct bpf_insn *orig, |
479 | struct bpf_insn *insn_buf); | |
6b8cc1d1 DB |
480 | u32 (*convert_ctx_access)(enum bpf_access_type type, |
481 | const struct bpf_insn *src, | |
482 | struct bpf_insn *dst, | |
f96da094 | 483 | struct bpf_prog *prog, u32 *target_size); |
27ae7997 | 484 | int (*btf_struct_access)(struct bpf_verifier_log *log, |
22dc4a0f | 485 | const struct btf *btf, |
27ae7997 MKL |
486 | const struct btf_type *t, int off, int size, |
487 | enum bpf_access_type atype, | |
488 | u32 *next_btf_id); | |
e6ac2450 | 489 | bool (*check_kfunc_call)(u32 kfunc_btf_id); |
09756af4 AS |
490 | }; |
491 | ||
cae1927c | 492 | struct bpf_prog_offload_ops { |
08ca90af | 493 | /* verifier basic callbacks */ |
cae1927c JK |
494 | int (*insn_hook)(struct bpf_verifier_env *env, |
495 | int insn_idx, int prev_insn_idx); | |
c941ce9c | 496 | int (*finalize)(struct bpf_verifier_env *env); |
08ca90af JK |
497 | /* verifier optimization callbacks (called after .finalize) */ |
498 | int (*replace_insn)(struct bpf_verifier_env *env, u32 off, | |
499 | struct bpf_insn *insn); | |
500 | int (*remove_insns)(struct bpf_verifier_env *env, u32 off, u32 cnt); | |
501 | /* program management callbacks */ | |
16a8cb5c QM |
502 | int (*prepare)(struct bpf_prog *prog); |
503 | int (*translate)(struct bpf_prog *prog); | |
eb911947 | 504 | void (*destroy)(struct bpf_prog *prog); |
cae1927c JK |
505 | }; |
506 | ||
0a9c1991 | 507 | struct bpf_prog_offload { |
ab3f0063 JK |
508 | struct bpf_prog *prog; |
509 | struct net_device *netdev; | |
341b3e7b | 510 | struct bpf_offload_dev *offdev; |
ab3f0063 JK |
511 | void *dev_priv; |
512 | struct list_head offloads; | |
513 | bool dev_state; | |
08ca90af | 514 | bool opt_failed; |
fcfb126d JW |
515 | void *jited_image; |
516 | u32 jited_len; | |
ab3f0063 JK |
517 | }; |
518 | ||
8bad74f9 RG |
519 | enum bpf_cgroup_storage_type { |
520 | BPF_CGROUP_STORAGE_SHARED, | |
b741f163 | 521 | BPF_CGROUP_STORAGE_PERCPU, |
8bad74f9 RG |
522 | __BPF_CGROUP_STORAGE_MAX |
523 | }; | |
524 | ||
525 | #define MAX_BPF_CGROUP_STORAGE_TYPE __BPF_CGROUP_STORAGE_MAX | |
526 | ||
f1b9509c AS |
527 | /* The longest tracepoint has 12 args. |
528 | * See include/trace/bpf_probe.h | |
529 | */ | |
530 | #define MAX_BPF_FUNC_ARGS 12 | |
531 | ||
523a4cf4 DB |
532 | /* The maximum number of arguments passed through registers |
533 | * a single function may have. | |
534 | */ | |
535 | #define MAX_BPF_FUNC_REG_ARGS 5 | |
536 | ||
fec56f58 AS |
537 | struct btf_func_model { |
538 | u8 ret_size; | |
539 | u8 nr_args; | |
540 | u8 arg_size[MAX_BPF_FUNC_ARGS]; | |
541 | }; | |
542 | ||
543 | /* Restore arguments before returning from trampoline to let original function | |
544 | * continue executing. This flag is used for fentry progs when there are no | |
545 | * fexit progs. | |
546 | */ | |
547 | #define BPF_TRAMP_F_RESTORE_REGS BIT(0) | |
548 | /* Call original function after fentry progs, but before fexit progs. | |
549 | * Makes sense for fentry/fexit, normal calls and indirect calls. | |
550 | */ | |
551 | #define BPF_TRAMP_F_CALL_ORIG BIT(1) | |
552 | /* Skip current frame and return to parent. Makes sense for fentry/fexit | |
553 | * programs only. Should not be used with normal calls and indirect calls. | |
554 | */ | |
555 | #define BPF_TRAMP_F_SKIP_FRAME BIT(2) | |
556 | ||
88fd9e53 KS |
557 | /* Each call __bpf_prog_enter + call bpf_func + call __bpf_prog_exit is ~50 |
558 | * bytes on x86. Pick a number to fit into BPF_IMAGE_SIZE / 2 | |
559 | */ | |
ca06f55b | 560 | #define BPF_MAX_TRAMP_PROGS 38 |
88fd9e53 KS |
561 | |
562 | struct bpf_tramp_progs { | |
563 | struct bpf_prog *progs[BPF_MAX_TRAMP_PROGS]; | |
564 | int nr_progs; | |
565 | }; | |
566 | ||
fec56f58 AS |
567 | /* Different use cases for BPF trampoline: |
568 | * 1. replace nop at the function entry (kprobe equivalent) | |
569 | * flags = BPF_TRAMP_F_RESTORE_REGS | |
570 | * fentry = a set of programs to run before returning from trampoline | |
571 | * | |
572 | * 2. replace nop at the function entry (kprobe + kretprobe equivalent) | |
573 | * flags = BPF_TRAMP_F_CALL_ORIG | BPF_TRAMP_F_SKIP_FRAME | |
574 | * orig_call = fentry_ip + MCOUNT_INSN_SIZE | |
575 | * fentry = a set of program to run before calling original function | |
576 | * fexit = a set of program to run after original function | |
577 | * | |
578 | * 3. replace direct call instruction anywhere in the function body | |
579 | * or assign a function pointer for indirect call (like tcp_congestion_ops->cong_avoid) | |
580 | * With flags = 0 | |
581 | * fentry = a set of programs to run before returning from trampoline | |
582 | * With flags = BPF_TRAMP_F_CALL_ORIG | |
583 | * orig_call = original callback addr or direct function addr | |
584 | * fentry = a set of program to run before calling original function | |
585 | * fexit = a set of program to run after original function | |
586 | */ | |
e21aa341 AS |
587 | struct bpf_tramp_image; |
588 | int arch_prepare_bpf_trampoline(struct bpf_tramp_image *tr, void *image, void *image_end, | |
85d33df3 | 589 | const struct btf_func_model *m, u32 flags, |
88fd9e53 | 590 | struct bpf_tramp_progs *tprogs, |
fec56f58 AS |
591 | void *orig_call); |
592 | /* these two functions are called from generated trampoline */ | |
ca06f55b | 593 | u64 notrace __bpf_prog_enter(struct bpf_prog *prog); |
fec56f58 | 594 | void notrace __bpf_prog_exit(struct bpf_prog *prog, u64 start); |
ca06f55b | 595 | u64 notrace __bpf_prog_enter_sleepable(struct bpf_prog *prog); |
f2dd3b39 | 596 | void notrace __bpf_prog_exit_sleepable(struct bpf_prog *prog, u64 start); |
e21aa341 AS |
597 | void notrace __bpf_tramp_enter(struct bpf_tramp_image *tr); |
598 | void notrace __bpf_tramp_exit(struct bpf_tramp_image *tr); | |
fec56f58 | 599 | |
535911c8 JO |
600 | struct bpf_ksym { |
601 | unsigned long start; | |
602 | unsigned long end; | |
bfea9a85 | 603 | char name[KSYM_NAME_LEN]; |
ecb60d1c | 604 | struct list_head lnode; |
ca4424c9 | 605 | struct latch_tree_node tnode; |
cbd76f8d | 606 | bool prog; |
535911c8 JO |
607 | }; |
608 | ||
fec56f58 AS |
609 | enum bpf_tramp_prog_type { |
610 | BPF_TRAMP_FENTRY, | |
611 | BPF_TRAMP_FEXIT, | |
ae240823 | 612 | BPF_TRAMP_MODIFY_RETURN, |
be8704ff AS |
613 | BPF_TRAMP_MAX, |
614 | BPF_TRAMP_REPLACE, /* more than MAX */ | |
fec56f58 AS |
615 | }; |
616 | ||
e21aa341 AS |
617 | struct bpf_tramp_image { |
618 | void *image; | |
619 | struct bpf_ksym ksym; | |
620 | struct percpu_ref pcref; | |
621 | void *ip_after_call; | |
622 | void *ip_epilogue; | |
623 | union { | |
624 | struct rcu_head rcu; | |
625 | struct work_struct work; | |
626 | }; | |
627 | }; | |
628 | ||
fec56f58 AS |
629 | struct bpf_trampoline { |
630 | /* hlist for trampoline_table */ | |
631 | struct hlist_node hlist; | |
632 | /* serializes access to fields of this trampoline */ | |
633 | struct mutex mutex; | |
634 | refcount_t refcnt; | |
635 | u64 key; | |
636 | struct { | |
637 | struct btf_func_model model; | |
638 | void *addr; | |
b91e014f | 639 | bool ftrace_managed; |
fec56f58 | 640 | } func; |
be8704ff AS |
641 | /* if !NULL this is BPF_PROG_TYPE_EXT program that extends another BPF |
642 | * program by replacing one of its functions. func.addr is the address | |
643 | * of the function it replaced. | |
644 | */ | |
645 | struct bpf_prog *extension_prog; | |
fec56f58 AS |
646 | /* list of BPF programs using this trampoline */ |
647 | struct hlist_head progs_hlist[BPF_TRAMP_MAX]; | |
648 | /* Number of attached programs. A counter per kind. */ | |
649 | int progs_cnt[BPF_TRAMP_MAX]; | |
650 | /* Executable image of trampoline */ | |
e21aa341 | 651 | struct bpf_tramp_image *cur_image; |
fec56f58 | 652 | u64 selector; |
861de02e | 653 | struct module *mod; |
fec56f58 | 654 | }; |
75ccbef6 | 655 | |
f7b12b6f THJ |
656 | struct bpf_attach_target_info { |
657 | struct btf_func_model fmodel; | |
658 | long tgt_addr; | |
659 | const char *tgt_name; | |
660 | const struct btf_type *tgt_type; | |
661 | }; | |
662 | ||
116eb788 | 663 | #define BPF_DISPATCHER_MAX 48 /* Fits in 2048B */ |
75ccbef6 BT |
664 | |
665 | struct bpf_dispatcher_prog { | |
666 | struct bpf_prog *prog; | |
667 | refcount_t users; | |
668 | }; | |
669 | ||
670 | struct bpf_dispatcher { | |
671 | /* dispatcher mutex */ | |
672 | struct mutex mutex; | |
673 | void *func; | |
674 | struct bpf_dispatcher_prog progs[BPF_DISPATCHER_MAX]; | |
675 | int num_progs; | |
676 | void *image; | |
677 | u32 image_off; | |
517b75e4 | 678 | struct bpf_ksym ksym; |
75ccbef6 BT |
679 | }; |
680 | ||
9f5b4009 | 681 | static __always_inline __nocfi unsigned int bpf_dispatcher_nop_func( |
7e6897f9 BT |
682 | const void *ctx, |
683 | const struct bpf_insn *insnsi, | |
684 | unsigned int (*bpf_func)(const void *, | |
685 | const struct bpf_insn *)) | |
686 | { | |
687 | return bpf_func(ctx, insnsi); | |
688 | } | |
fec56f58 | 689 | #ifdef CONFIG_BPF_JIT |
3aac1ead THJ |
690 | int bpf_trampoline_link_prog(struct bpf_prog *prog, struct bpf_trampoline *tr); |
691 | int bpf_trampoline_unlink_prog(struct bpf_prog *prog, struct bpf_trampoline *tr); | |
f7b12b6f THJ |
692 | struct bpf_trampoline *bpf_trampoline_get(u64 key, |
693 | struct bpf_attach_target_info *tgt_info); | |
fec56f58 | 694 | void bpf_trampoline_put(struct bpf_trampoline *tr); |
517b75e4 JO |
695 | #define BPF_DISPATCHER_INIT(_name) { \ |
696 | .mutex = __MUTEX_INITIALIZER(_name.mutex), \ | |
697 | .func = &_name##_func, \ | |
698 | .progs = {}, \ | |
699 | .num_progs = 0, \ | |
700 | .image = NULL, \ | |
701 | .image_off = 0, \ | |
702 | .ksym = { \ | |
703 | .name = #_name, \ | |
704 | .lnode = LIST_HEAD_INIT(_name.ksym.lnode), \ | |
705 | }, \ | |
75ccbef6 BT |
706 | } |
707 | ||
708 | #define DEFINE_BPF_DISPATCHER(name) \ | |
9f5b4009 | 709 | noinline __nocfi unsigned int bpf_dispatcher_##name##_func( \ |
75ccbef6 BT |
710 | const void *ctx, \ |
711 | const struct bpf_insn *insnsi, \ | |
712 | unsigned int (*bpf_func)(const void *, \ | |
713 | const struct bpf_insn *)) \ | |
714 | { \ | |
715 | return bpf_func(ctx, insnsi); \ | |
716 | } \ | |
6a64037d BT |
717 | EXPORT_SYMBOL(bpf_dispatcher_##name##_func); \ |
718 | struct bpf_dispatcher bpf_dispatcher_##name = \ | |
719 | BPF_DISPATCHER_INIT(bpf_dispatcher_##name); | |
75ccbef6 | 720 | #define DECLARE_BPF_DISPATCHER(name) \ |
6a64037d | 721 | unsigned int bpf_dispatcher_##name##_func( \ |
75ccbef6 BT |
722 | const void *ctx, \ |
723 | const struct bpf_insn *insnsi, \ | |
724 | unsigned int (*bpf_func)(const void *, \ | |
725 | const struct bpf_insn *)); \ | |
6a64037d BT |
726 | extern struct bpf_dispatcher bpf_dispatcher_##name; |
727 | #define BPF_DISPATCHER_FUNC(name) bpf_dispatcher_##name##_func | |
728 | #define BPF_DISPATCHER_PTR(name) (&bpf_dispatcher_##name) | |
75ccbef6 BT |
729 | void bpf_dispatcher_change_prog(struct bpf_dispatcher *d, struct bpf_prog *from, |
730 | struct bpf_prog *to); | |
dba122fb | 731 | /* Called only from JIT-enabled code, so there's no need for stubs. */ |
7ac88eba | 732 | void *bpf_jit_alloc_exec_page(void); |
a108f7dc JO |
733 | void bpf_image_ksym_add(void *data, struct bpf_ksym *ksym); |
734 | void bpf_image_ksym_del(struct bpf_ksym *ksym); | |
dba122fb JO |
735 | void bpf_ksym_add(struct bpf_ksym *ksym); |
736 | void bpf_ksym_del(struct bpf_ksym *ksym); | |
e21aa341 AS |
737 | int bpf_jit_charge_modmem(u32 pages); |
738 | void bpf_jit_uncharge_modmem(u32 pages); | |
fec56f58 | 739 | #else |
3aac1ead THJ |
740 | static inline int bpf_trampoline_link_prog(struct bpf_prog *prog, |
741 | struct bpf_trampoline *tr) | |
fec56f58 AS |
742 | { |
743 | return -ENOTSUPP; | |
744 | } | |
3aac1ead THJ |
745 | static inline int bpf_trampoline_unlink_prog(struct bpf_prog *prog, |
746 | struct bpf_trampoline *tr) | |
fec56f58 AS |
747 | { |
748 | return -ENOTSUPP; | |
749 | } | |
f7b12b6f THJ |
750 | static inline struct bpf_trampoline *bpf_trampoline_get(u64 key, |
751 | struct bpf_attach_target_info *tgt_info) | |
752 | { | |
753 | return ERR_PTR(-EOPNOTSUPP); | |
754 | } | |
fec56f58 | 755 | static inline void bpf_trampoline_put(struct bpf_trampoline *tr) {} |
75ccbef6 BT |
756 | #define DEFINE_BPF_DISPATCHER(name) |
757 | #define DECLARE_BPF_DISPATCHER(name) | |
6a64037d | 758 | #define BPF_DISPATCHER_FUNC(name) bpf_dispatcher_nop_func |
75ccbef6 BT |
759 | #define BPF_DISPATCHER_PTR(name) NULL |
760 | static inline void bpf_dispatcher_change_prog(struct bpf_dispatcher *d, | |
761 | struct bpf_prog *from, | |
762 | struct bpf_prog *to) {} | |
e9b4e606 JO |
763 | static inline bool is_bpf_image_address(unsigned long address) |
764 | { | |
765 | return false; | |
766 | } | |
fec56f58 AS |
767 | #endif |
768 | ||
8c1b6e69 | 769 | struct bpf_func_info_aux { |
51c39bb1 | 770 | u16 linkage; |
8c1b6e69 AS |
771 | bool unreliable; |
772 | }; | |
773 | ||
a66886fe DB |
774 | enum bpf_jit_poke_reason { |
775 | BPF_POKE_REASON_TAIL_CALL, | |
776 | }; | |
777 | ||
778 | /* Descriptor of pokes pointing /into/ the JITed image. */ | |
779 | struct bpf_jit_poke_descriptor { | |
cf71b174 | 780 | void *tailcall_target; |
ebf7d1f5 MF |
781 | void *tailcall_bypass; |
782 | void *bypass_addr; | |
a66886fe DB |
783 | union { |
784 | struct { | |
785 | struct bpf_map *map; | |
786 | u32 key; | |
787 | } tail_call; | |
788 | }; | |
cf71b174 | 789 | bool tailcall_target_stable; |
a66886fe DB |
790 | u8 adj_off; |
791 | u16 reason; | |
a748c697 | 792 | u32 insn_idx; |
a66886fe DB |
793 | }; |
794 | ||
3c32cc1b YS |
795 | /* reg_type info for ctx arguments */ |
796 | struct bpf_ctx_arg_aux { | |
797 | u32 offset; | |
798 | enum bpf_reg_type reg_type; | |
951cf368 | 799 | u32 btf_id; |
3c32cc1b YS |
800 | }; |
801 | ||
541c3bad AN |
802 | struct btf_mod_pair { |
803 | struct btf *btf; | |
804 | struct module *module; | |
805 | }; | |
806 | ||
e6ac2450 MKL |
807 | struct bpf_kfunc_desc_tab; |
808 | ||
09756af4 | 809 | struct bpf_prog_aux { |
85192dbf | 810 | atomic64_t refcnt; |
24701ece | 811 | u32 used_map_cnt; |
541c3bad | 812 | u32 used_btf_cnt; |
32bbe007 | 813 | u32 max_ctx_offset; |
e647815a | 814 | u32 max_pkt_offset; |
9df1c28b | 815 | u32 max_tp_access; |
8726679a | 816 | u32 stack_depth; |
dc4bb0e2 | 817 | u32 id; |
ba64e7d8 YS |
818 | u32 func_cnt; /* used by non-func prog as the number of func progs */ |
819 | u32 func_idx; /* 0 for non-func prog, the index in func array for func prog */ | |
ccfe29eb | 820 | u32 attach_btf_id; /* in-kernel BTF type id to attach to */ |
3c32cc1b | 821 | u32 ctx_arg_info_size; |
afbf21dc YS |
822 | u32 max_rdonly_access; |
823 | u32 max_rdwr_access; | |
22dc4a0f | 824 | struct btf *attach_btf; |
3c32cc1b | 825 | const struct bpf_ctx_arg_aux *ctx_arg_info; |
3aac1ead THJ |
826 | struct mutex dst_mutex; /* protects dst_* pointers below, *after* prog becomes visible */ |
827 | struct bpf_prog *dst_prog; | |
828 | struct bpf_trampoline *dst_trampoline; | |
4a1e7c0c THJ |
829 | enum bpf_prog_type saved_dst_prog_type; |
830 | enum bpf_attach_type saved_dst_attach_type; | |
a4b1d3c1 | 831 | bool verifier_zext; /* Zero extensions has been inserted by verifier. */ |
9a18eedb | 832 | bool offload_requested; |
38207291 | 833 | bool attach_btf_trace; /* true if attaching to BTF-enabled raw tp */ |
8c1b6e69 | 834 | bool func_proto_unreliable; |
1e6c62a8 | 835 | bool sleepable; |
ebf7d1f5 | 836 | bool tail_call_reachable; |
fec56f58 | 837 | struct hlist_node tramp_hlist; |
38207291 MKL |
838 | /* BTF_KIND_FUNC_PROTO for valid attach_btf_id */ |
839 | const struct btf_type *attach_func_proto; | |
840 | /* function name for valid attach_btf_id */ | |
841 | const char *attach_func_name; | |
1c2a088a AS |
842 | struct bpf_prog **func; |
843 | void *jit_data; /* JIT specific data. arch dependent */ | |
a66886fe | 844 | struct bpf_jit_poke_descriptor *poke_tab; |
e6ac2450 | 845 | struct bpf_kfunc_desc_tab *kfunc_tab; |
a66886fe | 846 | u32 size_poke_tab; |
535911c8 | 847 | struct bpf_ksym ksym; |
7de16e3a | 848 | const struct bpf_prog_ops *ops; |
09756af4 | 849 | struct bpf_map **used_maps; |
984fe94f | 850 | struct mutex used_maps_mutex; /* mutex for used_maps and used_map_cnt */ |
541c3bad | 851 | struct btf_mod_pair *used_btfs; |
09756af4 | 852 | struct bpf_prog *prog; |
aaac3ba9 | 853 | struct user_struct *user; |
cb4d2b3f | 854 | u64 load_time; /* ns since boottime */ |
8bad74f9 | 855 | struct bpf_map *cgroup_storage[MAX_BPF_CGROUP_STORAGE_TYPE]; |
067cae47 | 856 | char name[BPF_OBJ_NAME_LEN]; |
afdb09c7 CF |
857 | #ifdef CONFIG_SECURITY |
858 | void *security; | |
859 | #endif | |
0a9c1991 | 860 | struct bpf_prog_offload *offload; |
838e9690 | 861 | struct btf *btf; |
ba64e7d8 | 862 | struct bpf_func_info *func_info; |
8c1b6e69 | 863 | struct bpf_func_info_aux *func_info_aux; |
c454a46b MKL |
864 | /* bpf_line_info loaded from userspace. linfo->insn_off |
865 | * has the xlated insn offset. | |
866 | * Both the main and sub prog share the same linfo. | |
867 | * The subprog can access its first linfo by | |
868 | * using the linfo_idx. | |
869 | */ | |
870 | struct bpf_line_info *linfo; | |
871 | /* jited_linfo is the jited addr of the linfo. It has a | |
872 | * one to one mapping to linfo: | |
873 | * jited_linfo[i] is the jited addr for the linfo[i]->insn_off. | |
874 | * Both the main and sub prog share the same jited_linfo. | |
875 | * The subprog can access its first jited_linfo by | |
876 | * using the linfo_idx. | |
877 | */ | |
878 | void **jited_linfo; | |
ba64e7d8 | 879 | u32 func_info_cnt; |
c454a46b MKL |
880 | u32 nr_linfo; |
881 | /* subprog can use linfo_idx to access its first linfo and | |
882 | * jited_linfo. | |
883 | * main prog always has linfo_idx == 0 | |
884 | */ | |
885 | u32 linfo_idx; | |
3dec541b AS |
886 | u32 num_exentries; |
887 | struct exception_table_entry *extable; | |
abf2e7d6 AS |
888 | union { |
889 | struct work_struct work; | |
890 | struct rcu_head rcu; | |
891 | }; | |
09756af4 AS |
892 | }; |
893 | ||
2beee5f5 DB |
894 | struct bpf_array_aux { |
895 | /* 'Ownership' of prog array is claimed by the first program that | |
896 | * is going to use this map or by the first program which FD is | |
897 | * stored in the map to make sure that all callers and callees have | |
898 | * the same prog type and JITed flag. | |
899 | */ | |
900 | enum bpf_prog_type type; | |
901 | bool jited; | |
da765a2f DB |
902 | /* Programs with direct jumps into programs part of this array. */ |
903 | struct list_head poke_progs; | |
904 | struct bpf_map *map; | |
905 | struct mutex poke_mutex; | |
906 | struct work_struct work; | |
2beee5f5 DB |
907 | }; |
908 | ||
6cc7d1e8 AN |
909 | struct bpf_link { |
910 | atomic64_t refcnt; | |
911 | u32 id; | |
912 | enum bpf_link_type type; | |
913 | const struct bpf_link_ops *ops; | |
914 | struct bpf_prog *prog; | |
915 | struct work_struct work; | |
916 | }; | |
917 | ||
918 | struct bpf_link_ops { | |
919 | void (*release)(struct bpf_link *link); | |
920 | void (*dealloc)(struct bpf_link *link); | |
73b11c2a | 921 | int (*detach)(struct bpf_link *link); |
6cc7d1e8 AN |
922 | int (*update_prog)(struct bpf_link *link, struct bpf_prog *new_prog, |
923 | struct bpf_prog *old_prog); | |
924 | void (*show_fdinfo)(const struct bpf_link *link, struct seq_file *seq); | |
925 | int (*fill_link_info)(const struct bpf_link *link, | |
926 | struct bpf_link_info *info); | |
927 | }; | |
928 | ||
929 | struct bpf_link_primer { | |
930 | struct bpf_link *link; | |
931 | struct file *file; | |
932 | int fd; | |
933 | u32 id; | |
934 | }; | |
935 | ||
85d33df3 | 936 | struct bpf_struct_ops_value; |
27ae7997 MKL |
937 | struct btf_member; |
938 | ||
939 | #define BPF_STRUCT_OPS_MAX_NR_MEMBERS 64 | |
940 | struct bpf_struct_ops { | |
941 | const struct bpf_verifier_ops *verifier_ops; | |
942 | int (*init)(struct btf *btf); | |
943 | int (*check_member)(const struct btf_type *t, | |
944 | const struct btf_member *member); | |
85d33df3 MKL |
945 | int (*init_member)(const struct btf_type *t, |
946 | const struct btf_member *member, | |
947 | void *kdata, const void *udata); | |
948 | int (*reg)(void *kdata); | |
949 | void (*unreg)(void *kdata); | |
27ae7997 | 950 | const struct btf_type *type; |
85d33df3 | 951 | const struct btf_type *value_type; |
27ae7997 MKL |
952 | const char *name; |
953 | struct btf_func_model func_models[BPF_STRUCT_OPS_MAX_NR_MEMBERS]; | |
954 | u32 type_id; | |
85d33df3 | 955 | u32 value_id; |
27ae7997 MKL |
956 | }; |
957 | ||
958 | #if defined(CONFIG_BPF_JIT) && defined(CONFIG_BPF_SYSCALL) | |
85d33df3 | 959 | #define BPF_MODULE_OWNER ((void *)((0xeB9FUL << 2) + POISON_POINTER_DELTA)) |
27ae7997 | 960 | const struct bpf_struct_ops *bpf_struct_ops_find(u32 type_id); |
d3e42bb0 | 961 | void bpf_struct_ops_init(struct btf *btf, struct bpf_verifier_log *log); |
85d33df3 MKL |
962 | bool bpf_struct_ops_get(const void *kdata); |
963 | void bpf_struct_ops_put(const void *kdata); | |
964 | int bpf_struct_ops_map_sys_lookup_elem(struct bpf_map *map, void *key, | |
965 | void *value); | |
966 | static inline bool bpf_try_module_get(const void *data, struct module *owner) | |
967 | { | |
968 | if (owner == BPF_MODULE_OWNER) | |
969 | return bpf_struct_ops_get(data); | |
970 | else | |
971 | return try_module_get(owner); | |
972 | } | |
973 | static inline void bpf_module_put(const void *data, struct module *owner) | |
974 | { | |
975 | if (owner == BPF_MODULE_OWNER) | |
976 | bpf_struct_ops_put(data); | |
977 | else | |
978 | module_put(owner); | |
979 | } | |
27ae7997 MKL |
980 | #else |
981 | static inline const struct bpf_struct_ops *bpf_struct_ops_find(u32 type_id) | |
982 | { | |
983 | return NULL; | |
984 | } | |
d3e42bb0 MKL |
985 | static inline void bpf_struct_ops_init(struct btf *btf, |
986 | struct bpf_verifier_log *log) | |
987 | { | |
988 | } | |
85d33df3 MKL |
989 | static inline bool bpf_try_module_get(const void *data, struct module *owner) |
990 | { | |
991 | return try_module_get(owner); | |
992 | } | |
993 | static inline void bpf_module_put(const void *data, struct module *owner) | |
994 | { | |
995 | module_put(owner); | |
996 | } | |
997 | static inline int bpf_struct_ops_map_sys_lookup_elem(struct bpf_map *map, | |
998 | void *key, | |
999 | void *value) | |
1000 | { | |
1001 | return -EINVAL; | |
1002 | } | |
27ae7997 MKL |
1003 | #endif |
1004 | ||
04fd61ab AS |
1005 | struct bpf_array { |
1006 | struct bpf_map map; | |
1007 | u32 elem_size; | |
b2157399 | 1008 | u32 index_mask; |
2beee5f5 | 1009 | struct bpf_array_aux *aux; |
04fd61ab AS |
1010 | union { |
1011 | char value[0] __aligned(8); | |
2a36f0b9 | 1012 | void *ptrs[0] __aligned(8); |
a10423b8 | 1013 | void __percpu *pptrs[0] __aligned(8); |
04fd61ab AS |
1014 | }; |
1015 | }; | |
3b1efb19 | 1016 | |
c04c0d2b | 1017 | #define BPF_COMPLEXITY_LIMIT_INSNS 1000000 /* yes. 1M insns */ |
04fd61ab AS |
1018 | #define MAX_TAIL_CALL_CNT 32 |
1019 | ||
591fe988 DB |
1020 | #define BPF_F_ACCESS_MASK (BPF_F_RDONLY | \ |
1021 | BPF_F_RDONLY_PROG | \ | |
1022 | BPF_F_WRONLY | \ | |
1023 | BPF_F_WRONLY_PROG) | |
1024 | ||
1025 | #define BPF_MAP_CAN_READ BIT(0) | |
1026 | #define BPF_MAP_CAN_WRITE BIT(1) | |
1027 | ||
1028 | static inline u32 bpf_map_flags_to_cap(struct bpf_map *map) | |
1029 | { | |
1030 | u32 access_flags = map->map_flags & (BPF_F_RDONLY_PROG | BPF_F_WRONLY_PROG); | |
1031 | ||
1032 | /* Combination of BPF_F_RDONLY_PROG | BPF_F_WRONLY_PROG is | |
1033 | * not possible. | |
1034 | */ | |
1035 | if (access_flags & BPF_F_RDONLY_PROG) | |
1036 | return BPF_MAP_CAN_READ; | |
1037 | else if (access_flags & BPF_F_WRONLY_PROG) | |
1038 | return BPF_MAP_CAN_WRITE; | |
1039 | else | |
1040 | return BPF_MAP_CAN_READ | BPF_MAP_CAN_WRITE; | |
1041 | } | |
1042 | ||
1043 | static inline bool bpf_map_flags_access_ok(u32 access_flags) | |
1044 | { | |
1045 | return (access_flags & (BPF_F_RDONLY_PROG | BPF_F_WRONLY_PROG)) != | |
1046 | (BPF_F_RDONLY_PROG | BPF_F_WRONLY_PROG); | |
1047 | } | |
1048 | ||
3b1efb19 DB |
1049 | struct bpf_event_entry { |
1050 | struct perf_event *event; | |
1051 | struct file *perf_file; | |
1052 | struct file *map_file; | |
1053 | struct rcu_head rcu; | |
1054 | }; | |
1055 | ||
04fd61ab | 1056 | bool bpf_prog_array_compatible(struct bpf_array *array, const struct bpf_prog *fp); |
f1f7714e | 1057 | int bpf_prog_calc_tag(struct bpf_prog *fp); |
bd570ff9 | 1058 | |
0756ea3e | 1059 | const struct bpf_func_proto *bpf_get_trace_printk_proto(void); |
555c8a86 DB |
1060 | |
1061 | typedef unsigned long (*bpf_ctx_copy_t)(void *dst, const void *src, | |
aa7145c1 | 1062 | unsigned long off, unsigned long len); |
c64b7983 JS |
1063 | typedef u32 (*bpf_convert_ctx_access_t)(enum bpf_access_type type, |
1064 | const struct bpf_insn *src, | |
1065 | struct bpf_insn *dst, | |
1066 | struct bpf_prog *prog, | |
1067 | u32 *target_size); | |
555c8a86 DB |
1068 | |
1069 | u64 bpf_event_output(struct bpf_map *map, u64 flags, void *meta, u64 meta_size, | |
1070 | void *ctx, u64 ctx_size, bpf_ctx_copy_t ctx_copy); | |
04fd61ab | 1071 | |
324bda9e AS |
1072 | /* an array of programs to be executed under rcu_lock. |
1073 | * | |
1074 | * Typical usage: | |
1075 | * ret = BPF_PROG_RUN_ARRAY(&bpf_prog_array, ctx, BPF_PROG_RUN); | |
1076 | * | |
1077 | * the structure returned by bpf_prog_array_alloc() should be populated | |
1078 | * with program pointers and the last pointer must be NULL. | |
1079 | * The user has to keep refcnt on the program and make sure the program | |
1080 | * is removed from the array before bpf_prog_put(). | |
1081 | * The 'struct bpf_prog_array *' should only be replaced with xchg() | |
1082 | * since other cpus are walking the array of pointers in parallel. | |
1083 | */ | |
394e40a2 RG |
1084 | struct bpf_prog_array_item { |
1085 | struct bpf_prog *prog; | |
8bad74f9 | 1086 | struct bpf_cgroup_storage *cgroup_storage[MAX_BPF_CGROUP_STORAGE_TYPE]; |
394e40a2 RG |
1087 | }; |
1088 | ||
324bda9e AS |
1089 | struct bpf_prog_array { |
1090 | struct rcu_head rcu; | |
d7f10df8 | 1091 | struct bpf_prog_array_item items[]; |
324bda9e AS |
1092 | }; |
1093 | ||
d29ab6e1 | 1094 | struct bpf_prog_array *bpf_prog_array_alloc(u32 prog_cnt, gfp_t flags); |
54e9c9d4 SF |
1095 | void bpf_prog_array_free(struct bpf_prog_array *progs); |
1096 | int bpf_prog_array_length(struct bpf_prog_array *progs); | |
0d01da6a | 1097 | bool bpf_prog_array_is_empty(struct bpf_prog_array *array); |
54e9c9d4 | 1098 | int bpf_prog_array_copy_to_user(struct bpf_prog_array *progs, |
468e2f64 | 1099 | __u32 __user *prog_ids, u32 cnt); |
324bda9e | 1100 | |
54e9c9d4 | 1101 | void bpf_prog_array_delete_safe(struct bpf_prog_array *progs, |
e87c6bc3 | 1102 | struct bpf_prog *old_prog); |
ce3aa9cc JS |
1103 | int bpf_prog_array_delete_safe_at(struct bpf_prog_array *array, int index); |
1104 | int bpf_prog_array_update_at(struct bpf_prog_array *array, int index, | |
1105 | struct bpf_prog *prog); | |
54e9c9d4 | 1106 | int bpf_prog_array_copy_info(struct bpf_prog_array *array, |
3a38bb98 YS |
1107 | u32 *prog_ids, u32 request_cnt, |
1108 | u32 *prog_cnt); | |
54e9c9d4 | 1109 | int bpf_prog_array_copy(struct bpf_prog_array *old_array, |
e87c6bc3 YS |
1110 | struct bpf_prog *exclude_prog, |
1111 | struct bpf_prog *include_prog, | |
1112 | struct bpf_prog_array **new_array); | |
1113 | ||
77241217 SF |
1114 | /* BPF program asks to bypass CAP_NET_BIND_SERVICE in bind. */ |
1115 | #define BPF_RET_BIND_NO_CAP_NET_BIND_SERVICE (1 << 0) | |
1116 | /* BPF program asks to set CN on the packet. */ | |
1117 | #define BPF_RET_SET_CN (1 << 0) | |
1118 | ||
b910eaaa YS |
1119 | /* For BPF_PROG_RUN_ARRAY_FLAGS and __BPF_PROG_RUN_ARRAY, |
1120 | * if bpf_cgroup_storage_set() failed, the rest of programs | |
1121 | * will not execute. This should be a really rare scenario | |
1122 | * as it requires BPF_CGROUP_STORAGE_NEST_MAX number of | |
1123 | * preemptions all between bpf_cgroup_storage_set() and | |
1124 | * bpf_cgroup_storage_unset() on the same cpu. | |
1125 | */ | |
77241217 SF |
1126 | #define BPF_PROG_RUN_ARRAY_FLAGS(array, ctx, func, ret_flags) \ |
1127 | ({ \ | |
1128 | struct bpf_prog_array_item *_item; \ | |
1129 | struct bpf_prog *_prog; \ | |
1130 | struct bpf_prog_array *_array; \ | |
1131 | u32 _ret = 1; \ | |
1132 | u32 func_ret; \ | |
1133 | migrate_disable(); \ | |
1134 | rcu_read_lock(); \ | |
1135 | _array = rcu_dereference(array); \ | |
1136 | _item = &_array->items[0]; \ | |
1137 | while ((_prog = READ_ONCE(_item->prog))) { \ | |
b910eaaa YS |
1138 | if (unlikely(bpf_cgroup_storage_set(_item->cgroup_storage))) \ |
1139 | break; \ | |
77241217 SF |
1140 | func_ret = func(_prog, ctx); \ |
1141 | _ret &= (func_ret & 1); \ | |
1142 | *(ret_flags) |= (func_ret >> 1); \ | |
b910eaaa | 1143 | bpf_cgroup_storage_unset(); \ |
77241217 SF |
1144 | _item++; \ |
1145 | } \ | |
1146 | rcu_read_unlock(); \ | |
1147 | migrate_enable(); \ | |
1148 | _ret; \ | |
1149 | }) | |
1150 | ||
05a68ce5 | 1151 | #define __BPF_PROG_RUN_ARRAY(array, ctx, func, check_non_null, set_cg_storage) \ |
324bda9e | 1152 | ({ \ |
394e40a2 RG |
1153 | struct bpf_prog_array_item *_item; \ |
1154 | struct bpf_prog *_prog; \ | |
e87c6bc3 | 1155 | struct bpf_prog_array *_array; \ |
324bda9e | 1156 | u32 _ret = 1; \ |
2a916f2f | 1157 | migrate_disable(); \ |
324bda9e | 1158 | rcu_read_lock(); \ |
e87c6bc3 YS |
1159 | _array = rcu_dereference(array); \ |
1160 | if (unlikely(check_non_null && !_array))\ | |
1161 | goto _out; \ | |
394e40a2 RG |
1162 | _item = &_array->items[0]; \ |
1163 | while ((_prog = READ_ONCE(_item->prog))) { \ | |
b910eaaa YS |
1164 | if (!set_cg_storage) { \ |
1165 | _ret &= func(_prog, ctx); \ | |
1166 | } else { \ | |
1167 | if (unlikely(bpf_cgroup_storage_set(_item->cgroup_storage))) \ | |
1168 | break; \ | |
1169 | _ret &= func(_prog, ctx); \ | |
1170 | bpf_cgroup_storage_unset(); \ | |
1171 | } \ | |
394e40a2 | 1172 | _item++; \ |
e87c6bc3 YS |
1173 | } \ |
1174 | _out: \ | |
324bda9e | 1175 | rcu_read_unlock(); \ |
2a916f2f | 1176 | migrate_enable(); \ |
324bda9e AS |
1177 | _ret; \ |
1178 | }) | |
1179 | ||
1f52f6c0 | 1180 | /* To be used by __cgroup_bpf_run_filter_skb for EGRESS BPF progs |
1181 | * so BPF programs can request cwr for TCP packets. | |
1182 | * | |
1183 | * Current cgroup skb programs can only return 0 or 1 (0 to drop the | |
1184 | * packet. This macro changes the behavior so the low order bit | |
1185 | * indicates whether the packet should be dropped (0) or not (1) | |
1186 | * and the next bit is a congestion notification bit. This could be | |
1187 | * used by TCP to call tcp_enter_cwr() | |
1188 | * | |
1189 | * Hence, new allowed return values of CGROUP EGRESS BPF programs are: | |
1190 | * 0: drop packet | |
1191 | * 1: keep packet | |
1192 | * 2: drop packet and cn | |
1193 | * 3: keep packet and cn | |
1194 | * | |
1195 | * This macro then converts it to one of the NET_XMIT or an error | |
1196 | * code that is then interpreted as drop packet (and no cn): | |
1197 | * 0: NET_XMIT_SUCCESS skb should be transmitted | |
1198 | * 1: NET_XMIT_DROP skb should be dropped and cn | |
1199 | * 2: NET_XMIT_CN skb should be transmitted and cn | |
1200 | * 3: -EPERM skb should be dropped | |
1201 | */ | |
1202 | #define BPF_PROG_CGROUP_INET_EGRESS_RUN_ARRAY(array, ctx, func) \ | |
1203 | ({ \ | |
77241217 SF |
1204 | u32 _flags = 0; \ |
1205 | bool _cn; \ | |
1206 | u32 _ret; \ | |
1207 | _ret = BPF_PROG_RUN_ARRAY_FLAGS(array, ctx, func, &_flags); \ | |
1208 | _cn = _flags & BPF_RET_SET_CN; \ | |
1f52f6c0 | 1209 | if (_ret) \ |
1210 | _ret = (_cn ? NET_XMIT_CN : NET_XMIT_SUCCESS); \ | |
1211 | else \ | |
1212 | _ret = (_cn ? NET_XMIT_DROP : -EPERM); \ | |
1213 | _ret; \ | |
1214 | }) | |
1215 | ||
e87c6bc3 | 1216 | #define BPF_PROG_RUN_ARRAY(array, ctx, func) \ |
05a68ce5 | 1217 | __BPF_PROG_RUN_ARRAY(array, ctx, func, false, true) |
e87c6bc3 YS |
1218 | |
1219 | #define BPF_PROG_RUN_ARRAY_CHECK(array, ctx, func) \ | |
05a68ce5 | 1220 | __BPF_PROG_RUN_ARRAY(array, ctx, func, true, false) |
e87c6bc3 | 1221 | |
89aa0758 | 1222 | #ifdef CONFIG_BPF_SYSCALL |
b121d1e7 | 1223 | DECLARE_PER_CPU(int, bpf_prog_active); |
d46edd67 | 1224 | extern struct mutex bpf_stats_enabled_mutex; |
b121d1e7 | 1225 | |
c518cfa0 TG |
1226 | /* |
1227 | * Block execution of BPF programs attached to instrumentation (perf, | |
1228 | * kprobes, tracepoints) to prevent deadlocks on map operations as any of | |
1229 | * these events can happen inside a region which holds a map bucket lock | |
1230 | * and can deadlock on it. | |
1231 | * | |
1232 | * Use the preemption safe inc/dec variants on RT because migrate disable | |
1233 | * is preemptible on RT and preemption in the middle of the RMW operation | |
1234 | * might lead to inconsistent state. Use the raw variants for non RT | |
1235 | * kernels as migrate_disable() maps to preempt_disable() so the slightly | |
1236 | * more expensive save operation can be avoided. | |
1237 | */ | |
1238 | static inline void bpf_disable_instrumentation(void) | |
1239 | { | |
1240 | migrate_disable(); | |
1241 | if (IS_ENABLED(CONFIG_PREEMPT_RT)) | |
1242 | this_cpu_inc(bpf_prog_active); | |
1243 | else | |
1244 | __this_cpu_inc(bpf_prog_active); | |
1245 | } | |
1246 | ||
1247 | static inline void bpf_enable_instrumentation(void) | |
1248 | { | |
1249 | if (IS_ENABLED(CONFIG_PREEMPT_RT)) | |
1250 | this_cpu_dec(bpf_prog_active); | |
1251 | else | |
1252 | __this_cpu_dec(bpf_prog_active); | |
1253 | migrate_enable(); | |
1254 | } | |
1255 | ||
f66e448c CF |
1256 | extern const struct file_operations bpf_map_fops; |
1257 | extern const struct file_operations bpf_prog_fops; | |
367ec3e4 | 1258 | extern const struct file_operations bpf_iter_fops; |
f66e448c | 1259 | |
91cc1a99 | 1260 | #define BPF_PROG_TYPE(_id, _name, prog_ctx_type, kern_ctx_type) \ |
7de16e3a JK |
1261 | extern const struct bpf_prog_ops _name ## _prog_ops; \ |
1262 | extern const struct bpf_verifier_ops _name ## _verifier_ops; | |
40077e0c JB |
1263 | #define BPF_MAP_TYPE(_id, _ops) \ |
1264 | extern const struct bpf_map_ops _ops; | |
f2e10bff | 1265 | #define BPF_LINK_TYPE(_id, _name) |
be9370a7 JB |
1266 | #include <linux/bpf_types.h> |
1267 | #undef BPF_PROG_TYPE | |
40077e0c | 1268 | #undef BPF_MAP_TYPE |
f2e10bff | 1269 | #undef BPF_LINK_TYPE |
0fc174de | 1270 | |
ab3f0063 | 1271 | extern const struct bpf_prog_ops bpf_offload_prog_ops; |
4f9218aa JK |
1272 | extern const struct bpf_verifier_ops tc_cls_act_analyzer_ops; |
1273 | extern const struct bpf_verifier_ops xdp_analyzer_ops; | |
1274 | ||
0fc174de | 1275 | struct bpf_prog *bpf_prog_get(u32 ufd); |
248f346f | 1276 | struct bpf_prog *bpf_prog_get_type_dev(u32 ufd, enum bpf_prog_type type, |
288b3de5 | 1277 | bool attach_drv); |
85192dbf | 1278 | void bpf_prog_add(struct bpf_prog *prog, int i); |
c540594f | 1279 | void bpf_prog_sub(struct bpf_prog *prog, int i); |
85192dbf | 1280 | void bpf_prog_inc(struct bpf_prog *prog); |
a6f6df69 | 1281 | struct bpf_prog * __must_check bpf_prog_inc_not_zero(struct bpf_prog *prog); |
61e021f3 DB |
1282 | void bpf_prog_put(struct bpf_prog *prog); |
1283 | ||
ad8ad79f | 1284 | void bpf_prog_free_id(struct bpf_prog *prog, bool do_idr_lock); |
a3884572 | 1285 | void bpf_map_free_id(struct bpf_map *map, bool do_idr_lock); |
ad8ad79f | 1286 | |
1ed4d924 | 1287 | struct bpf_map *bpf_map_get(u32 ufd); |
c9da161c | 1288 | struct bpf_map *bpf_map_get_with_uref(u32 ufd); |
c2101297 | 1289 | struct bpf_map *__bpf_map_get(struct fd f); |
1e0bd5a0 AN |
1290 | void bpf_map_inc(struct bpf_map *map); |
1291 | void bpf_map_inc_with_uref(struct bpf_map *map); | |
1292 | struct bpf_map * __must_check bpf_map_inc_not_zero(struct bpf_map *map); | |
c9da161c | 1293 | void bpf_map_put_with_uref(struct bpf_map *map); |
61e021f3 | 1294 | void bpf_map_put(struct bpf_map *map); |
196e8ca7 DB |
1295 | void *bpf_map_area_alloc(u64 size, int numa_node); |
1296 | void *bpf_map_area_mmapable_alloc(u64 size, int numa_node); | |
d407bd25 | 1297 | void bpf_map_area_free(void *base); |
bd475643 | 1298 | void bpf_map_init_from_attr(struct bpf_map *map, union bpf_attr *attr); |
cb4d03ab BV |
1299 | int generic_map_lookup_batch(struct bpf_map *map, |
1300 | const union bpf_attr *attr, | |
aa2e93b8 BV |
1301 | union bpf_attr __user *uattr); |
1302 | int generic_map_update_batch(struct bpf_map *map, | |
1303 | const union bpf_attr *attr, | |
1304 | union bpf_attr __user *uattr); | |
1305 | int generic_map_delete_batch(struct bpf_map *map, | |
1306 | const union bpf_attr *attr, | |
cb4d03ab | 1307 | union bpf_attr __user *uattr); |
6086d29d | 1308 | struct bpf_map *bpf_map_get_curr_or_next(u32 *id); |
a228a64f | 1309 | struct bpf_prog *bpf_prog_get_curr_or_next(u32 *id); |
61e021f3 | 1310 | |
48edc1f7 RG |
1311 | #ifdef CONFIG_MEMCG_KMEM |
1312 | void *bpf_map_kmalloc_node(const struct bpf_map *map, size_t size, gfp_t flags, | |
1313 | int node); | |
1314 | void *bpf_map_kzalloc(const struct bpf_map *map, size_t size, gfp_t flags); | |
1315 | void __percpu *bpf_map_alloc_percpu(const struct bpf_map *map, size_t size, | |
1316 | size_t align, gfp_t flags); | |
1317 | #else | |
1318 | static inline void * | |
1319 | bpf_map_kmalloc_node(const struct bpf_map *map, size_t size, gfp_t flags, | |
1320 | int node) | |
1321 | { | |
1322 | return kmalloc_node(size, flags, node); | |
1323 | } | |
1324 | ||
1325 | static inline void * | |
1326 | bpf_map_kzalloc(const struct bpf_map *map, size_t size, gfp_t flags) | |
1327 | { | |
1328 | return kzalloc(size, flags); | |
1329 | } | |
1330 | ||
1331 | static inline void __percpu * | |
1332 | bpf_map_alloc_percpu(const struct bpf_map *map, size_t size, size_t align, | |
1333 | gfp_t flags) | |
1334 | { | |
1335 | return __alloc_percpu_gfp(size, align, flags); | |
1336 | } | |
1337 | #endif | |
1338 | ||
1be7f75d AS |
1339 | extern int sysctl_unprivileged_bpf_disabled; |
1340 | ||
2c78ee89 AS |
1341 | static inline bool bpf_allow_ptr_leaks(void) |
1342 | { | |
1343 | return perfmon_capable(); | |
1344 | } | |
1345 | ||
01f810ac AM |
1346 | static inline bool bpf_allow_uninit_stack(void) |
1347 | { | |
1348 | return perfmon_capable(); | |
1349 | } | |
1350 | ||
41c48f3a AI |
1351 | static inline bool bpf_allow_ptr_to_map_access(void) |
1352 | { | |
1353 | return perfmon_capable(); | |
1354 | } | |
1355 | ||
2c78ee89 AS |
1356 | static inline bool bpf_bypass_spec_v1(void) |
1357 | { | |
1358 | return perfmon_capable(); | |
1359 | } | |
1360 | ||
1361 | static inline bool bpf_bypass_spec_v4(void) | |
1362 | { | |
1363 | return perfmon_capable(); | |
1364 | } | |
1365 | ||
6e71b04a | 1366 | int bpf_map_new_fd(struct bpf_map *map, int flags); |
b2197755 DB |
1367 | int bpf_prog_new_fd(struct bpf_prog *prog); |
1368 | ||
f2e10bff | 1369 | void bpf_link_init(struct bpf_link *link, enum bpf_link_type type, |
a3b80e10 AN |
1370 | const struct bpf_link_ops *ops, struct bpf_prog *prog); |
1371 | int bpf_link_prime(struct bpf_link *link, struct bpf_link_primer *primer); | |
1372 | int bpf_link_settle(struct bpf_link_primer *primer); | |
1373 | void bpf_link_cleanup(struct bpf_link_primer *primer); | |
70ed506c AN |
1374 | void bpf_link_inc(struct bpf_link *link); |
1375 | void bpf_link_put(struct bpf_link *link); | |
1376 | int bpf_link_new_fd(struct bpf_link *link); | |
babf3164 | 1377 | struct file *bpf_link_new_file(struct bpf_link *link, int *reserved_fd); |
70ed506c AN |
1378 | struct bpf_link *bpf_link_get_from_fd(u32 ufd); |
1379 | ||
b2197755 | 1380 | int bpf_obj_pin_user(u32 ufd, const char __user *pathname); |
6e71b04a | 1381 | int bpf_obj_get_user(const char __user *pathname, int flags); |
b2197755 | 1382 | |
21aef70e | 1383 | #define BPF_ITER_FUNC_PREFIX "bpf_iter_" |
e5158d98 | 1384 | #define DEFINE_BPF_ITER_FUNC(target, args...) \ |
21aef70e YS |
1385 | extern int bpf_iter_ ## target(args); \ |
1386 | int __init bpf_iter_ ## target(args) { return 0; } | |
15d83c4d | 1387 | |
f9c79272 | 1388 | struct bpf_iter_aux_info { |
a5cbe05a | 1389 | struct bpf_map *map; |
f9c79272 YS |
1390 | }; |
1391 | ||
5e7b3020 YS |
1392 | typedef int (*bpf_iter_attach_target_t)(struct bpf_prog *prog, |
1393 | union bpf_iter_link_info *linfo, | |
1394 | struct bpf_iter_aux_info *aux); | |
1395 | typedef void (*bpf_iter_detach_target_t)(struct bpf_iter_aux_info *aux); | |
6b0a249a YS |
1396 | typedef void (*bpf_iter_show_fdinfo_t) (const struct bpf_iter_aux_info *aux, |
1397 | struct seq_file *seq); | |
1398 | typedef int (*bpf_iter_fill_link_info_t)(const struct bpf_iter_aux_info *aux, | |
1399 | struct bpf_link_info *info); | |
a5cbe05a | 1400 | |
cf83b2d2 YS |
1401 | enum bpf_iter_feature { |
1402 | BPF_ITER_RESCHED = BIT(0), | |
1403 | }; | |
1404 | ||
3c32cc1b | 1405 | #define BPF_ITER_CTX_ARG_MAX 2 |
ae24345d YS |
1406 | struct bpf_iter_reg { |
1407 | const char *target; | |
5e7b3020 YS |
1408 | bpf_iter_attach_target_t attach_target; |
1409 | bpf_iter_detach_target_t detach_target; | |
6b0a249a YS |
1410 | bpf_iter_show_fdinfo_t show_fdinfo; |
1411 | bpf_iter_fill_link_info_t fill_link_info; | |
3c32cc1b | 1412 | u32 ctx_arg_info_size; |
cf83b2d2 | 1413 | u32 feature; |
3c32cc1b | 1414 | struct bpf_ctx_arg_aux ctx_arg_info[BPF_ITER_CTX_ARG_MAX]; |
14fc6bd6 | 1415 | const struct bpf_iter_seq_info *seq_info; |
ae24345d YS |
1416 | }; |
1417 | ||
e5158d98 YS |
1418 | struct bpf_iter_meta { |
1419 | __bpf_md_ptr(struct seq_file *, seq); | |
1420 | u64 session_id; | |
1421 | u64 seq_num; | |
1422 | }; | |
1423 | ||
a5cbe05a YS |
1424 | struct bpf_iter__bpf_map_elem { |
1425 | __bpf_md_ptr(struct bpf_iter_meta *, meta); | |
1426 | __bpf_md_ptr(struct bpf_map *, map); | |
1427 | __bpf_md_ptr(void *, key); | |
1428 | __bpf_md_ptr(void *, value); | |
1429 | }; | |
1430 | ||
15172a46 | 1431 | int bpf_iter_reg_target(const struct bpf_iter_reg *reg_info); |
ab2ee4fc | 1432 | void bpf_iter_unreg_target(const struct bpf_iter_reg *reg_info); |
15d83c4d | 1433 | bool bpf_iter_prog_supported(struct bpf_prog *prog); |
af2ac3e1 | 1434 | int bpf_iter_link_attach(const union bpf_attr *attr, bpfptr_t uattr, struct bpf_prog *prog); |
ac51d99b | 1435 | int bpf_iter_new_fd(struct bpf_link *link); |
367ec3e4 | 1436 | bool bpf_link_is_iter(struct bpf_link *link); |
e5158d98 YS |
1437 | struct bpf_prog *bpf_iter_get_info(struct bpf_iter_meta *meta, bool in_stop); |
1438 | int bpf_iter_run_prog(struct bpf_prog *prog, void *ctx); | |
b76f2226 YS |
1439 | void bpf_iter_map_show_fdinfo(const struct bpf_iter_aux_info *aux, |
1440 | struct seq_file *seq); | |
1441 | int bpf_iter_map_fill_link_info(const struct bpf_iter_aux_info *aux, | |
1442 | struct bpf_link_info *info); | |
ae24345d | 1443 | |
314ee05e YS |
1444 | int map_set_for_each_callback_args(struct bpf_verifier_env *env, |
1445 | struct bpf_func_state *caller, | |
1446 | struct bpf_func_state *callee); | |
1447 | ||
15a07b33 AS |
1448 | int bpf_percpu_hash_copy(struct bpf_map *map, void *key, void *value); |
1449 | int bpf_percpu_array_copy(struct bpf_map *map, void *key, void *value); | |
1450 | int bpf_percpu_hash_update(struct bpf_map *map, void *key, void *value, | |
1451 | u64 flags); | |
1452 | int bpf_percpu_array_update(struct bpf_map *map, void *key, void *value, | |
1453 | u64 flags); | |
d056a788 | 1454 | |
557c0c6e | 1455 | int bpf_stackmap_copy(struct bpf_map *map, void *key, void *value); |
15a07b33 | 1456 | |
d056a788 DB |
1457 | int bpf_fd_array_map_update_elem(struct bpf_map *map, struct file *map_file, |
1458 | void *key, void *value, u64 map_flags); | |
14dc6f04 | 1459 | int bpf_fd_array_map_lookup_elem(struct bpf_map *map, void *key, u32 *value); |
bcc6b1b7 MKL |
1460 | int bpf_fd_htab_map_update_elem(struct bpf_map *map, struct file *map_file, |
1461 | void *key, void *value, u64 map_flags); | |
14dc6f04 | 1462 | int bpf_fd_htab_map_lookup_elem(struct bpf_map *map, void *key, u32 *value); |
d056a788 | 1463 | |
6e71b04a | 1464 | int bpf_get_file_flag(int flags); |
af2ac3e1 | 1465 | int bpf_check_uarg_tail_zero(bpfptr_t uaddr, size_t expected_size, |
dcab51f1 | 1466 | size_t actual_size); |
6e71b04a | 1467 | |
15a07b33 AS |
1468 | /* memcpy that is used with 8-byte aligned pointers, power-of-8 size and |
1469 | * forced to use 'long' read/writes to try to atomically copy long counters. | |
1470 | * Best-effort only. No barriers here, since it _will_ race with concurrent | |
1471 | * updates from BPF programs. Called from bpf syscall and mostly used with | |
1472 | * size 8 or 16 bytes, so ask compiler to inline it. | |
1473 | */ | |
1474 | static inline void bpf_long_memcpy(void *dst, const void *src, u32 size) | |
1475 | { | |
1476 | const long *lsrc = src; | |
1477 | long *ldst = dst; | |
1478 | ||
1479 | size /= sizeof(long); | |
1480 | while (size--) | |
1481 | *ldst++ = *lsrc++; | |
1482 | } | |
1483 | ||
61e021f3 | 1484 | /* verify correctness of eBPF program */ |
af2ac3e1 | 1485 | int bpf_check(struct bpf_prog **fp, union bpf_attr *attr, bpfptr_t uattr); |
a643bff7 AN |
1486 | |
1487 | #ifndef CONFIG_BPF_JIT_ALWAYS_ON | |
1ea47e01 | 1488 | void bpf_patch_call_args(struct bpf_insn *insn, u32 stack_depth); |
a643bff7 | 1489 | #endif |
46f55cff | 1490 | |
76654e67 AM |
1491 | struct btf *bpf_get_btf_vmlinux(void); |
1492 | ||
46f55cff | 1493 | /* Map specifics */ |
67f29e07 | 1494 | struct xdp_buff; |
6d5fc195 | 1495 | struct sk_buff; |
e6a4750f BT |
1496 | struct bpf_dtab_netdev; |
1497 | struct bpf_cpu_map_entry; | |
67f29e07 | 1498 | |
1d233886 THJ |
1499 | void __dev_flush(void); |
1500 | int dev_xdp_enqueue(struct net_device *dev, struct xdp_buff *xdp, | |
1501 | struct net_device *dev_rx); | |
38edddb8 JDB |
1502 | int dev_map_enqueue(struct bpf_dtab_netdev *dst, struct xdp_buff *xdp, |
1503 | struct net_device *dev_rx); | |
e624d4ed HL |
1504 | int dev_map_enqueue_multi(struct xdp_buff *xdp, struct net_device *dev_rx, |
1505 | struct bpf_map *map, bool exclude_ingress); | |
6d5fc195 TM |
1506 | int dev_map_generic_redirect(struct bpf_dtab_netdev *dst, struct sk_buff *skb, |
1507 | struct bpf_prog *xdp_prog); | |
e624d4ed HL |
1508 | int dev_map_redirect_multi(struct net_device *dev, struct sk_buff *skb, |
1509 | struct bpf_prog *xdp_prog, struct bpf_map *map, | |
1510 | bool exclude_ingress); | |
fbee97fe | 1511 | bool dev_map_can_have_prog(struct bpf_map *map); |
46f55cff | 1512 | |
cdfafe98 | 1513 | void __cpu_map_flush(void); |
9c270af3 JDB |
1514 | int cpu_map_enqueue(struct bpf_cpu_map_entry *rcpu, struct xdp_buff *xdp, |
1515 | struct net_device *dev_rx); | |
92164774 | 1516 | bool cpu_map_prog_allowed(struct bpf_map *map); |
9c270af3 | 1517 | |
96eabe7a MKL |
1518 | /* Return map's numa specified by userspace */ |
1519 | static inline int bpf_map_attr_numa_node(const union bpf_attr *attr) | |
1520 | { | |
1521 | return (attr->map_flags & BPF_F_NUMA_NODE) ? | |
1522 | attr->numa_node : NUMA_NO_NODE; | |
1523 | } | |
1524 | ||
040ee692 | 1525 | struct bpf_prog *bpf_prog_get_type_path(const char *name, enum bpf_prog_type type); |
5dc4c4b7 | 1526 | int array_map_alloc_check(union bpf_attr *attr); |
040ee692 | 1527 | |
c695865c SF |
1528 | int bpf_prog_test_run_xdp(struct bpf_prog *prog, const union bpf_attr *kattr, |
1529 | union bpf_attr __user *uattr); | |
1530 | int bpf_prog_test_run_skb(struct bpf_prog *prog, const union bpf_attr *kattr, | |
1531 | union bpf_attr __user *uattr); | |
da00d2f1 KS |
1532 | int bpf_prog_test_run_tracing(struct bpf_prog *prog, |
1533 | const union bpf_attr *kattr, | |
1534 | union bpf_attr __user *uattr); | |
c695865c SF |
1535 | int bpf_prog_test_run_flow_dissector(struct bpf_prog *prog, |
1536 | const union bpf_attr *kattr, | |
1537 | union bpf_attr __user *uattr); | |
1b4d60ec SL |
1538 | int bpf_prog_test_run_raw_tp(struct bpf_prog *prog, |
1539 | const union bpf_attr *kattr, | |
1540 | union bpf_attr __user *uattr); | |
7c32e8f8 LB |
1541 | int bpf_prog_test_run_sk_lookup(struct bpf_prog *prog, |
1542 | const union bpf_attr *kattr, | |
1543 | union bpf_attr __user *uattr); | |
7bd1590d | 1544 | bool bpf_prog_test_check_kfunc_call(u32 kfunc_id); |
9e15db66 AS |
1545 | bool btf_ctx_access(int off, int size, enum bpf_access_type type, |
1546 | const struct bpf_prog *prog, | |
1547 | struct bpf_insn_access_aux *info); | |
22dc4a0f | 1548 | int btf_struct_access(struct bpf_verifier_log *log, const struct btf *btf, |
9e15db66 AS |
1549 | const struct btf_type *t, int off, int size, |
1550 | enum bpf_access_type atype, | |
1551 | u32 *next_btf_id); | |
faaf4a79 | 1552 | bool btf_struct_ids_match(struct bpf_verifier_log *log, |
22dc4a0f AN |
1553 | const struct btf *btf, u32 id, int off, |
1554 | const struct btf *need_btf, u32 need_type_id); | |
9e15db66 | 1555 | |
fec56f58 AS |
1556 | int btf_distill_func_proto(struct bpf_verifier_log *log, |
1557 | struct btf *btf, | |
1558 | const struct btf_type *func_proto, | |
1559 | const char *func_name, | |
1560 | struct btf_func_model *m); | |
1561 | ||
51c39bb1 | 1562 | struct bpf_reg_state; |
34747c41 MKL |
1563 | int btf_check_subprog_arg_match(struct bpf_verifier_env *env, int subprog, |
1564 | struct bpf_reg_state *regs); | |
e6ac2450 MKL |
1565 | int btf_check_kfunc_arg_match(struct bpf_verifier_env *env, |
1566 | const struct btf *btf, u32 func_id, | |
1567 | struct bpf_reg_state *regs); | |
51c39bb1 AS |
1568 | int btf_prepare_func_args(struct bpf_verifier_env *env, int subprog, |
1569 | struct bpf_reg_state *reg); | |
efc68158 | 1570 | int btf_check_type_match(struct bpf_verifier_log *log, const struct bpf_prog *prog, |
be8704ff | 1571 | struct btf *btf, const struct btf_type *t); |
8c1b6e69 | 1572 | |
7e6897f9 | 1573 | struct bpf_prog *bpf_prog_by_id(u32 id); |
005142b8 | 1574 | struct bpf_link *bpf_link_by_id(u32 id); |
7e6897f9 | 1575 | |
6890896b | 1576 | const struct bpf_func_proto *bpf_base_func_proto(enum bpf_func_id func_id); |
a10787e6 | 1577 | void bpf_task_storage_free(struct task_struct *task); |
e6ac2450 MKL |
1578 | bool bpf_prog_has_kfunc_call(const struct bpf_prog *prog); |
1579 | const struct btf_func_model * | |
1580 | bpf_jit_find_kfunc_model(const struct bpf_prog *prog, | |
1581 | const struct bpf_insn *insn); | |
9c270af3 | 1582 | #else /* !CONFIG_BPF_SYSCALL */ |
0fc174de DB |
1583 | static inline struct bpf_prog *bpf_prog_get(u32 ufd) |
1584 | { | |
1585 | return ERR_PTR(-EOPNOTSUPP); | |
1586 | } | |
1587 | ||
248f346f JK |
1588 | static inline struct bpf_prog *bpf_prog_get_type_dev(u32 ufd, |
1589 | enum bpf_prog_type type, | |
288b3de5 | 1590 | bool attach_drv) |
248f346f JK |
1591 | { |
1592 | return ERR_PTR(-EOPNOTSUPP); | |
1593 | } | |
1594 | ||
85192dbf | 1595 | static inline void bpf_prog_add(struct bpf_prog *prog, int i) |
cc2e0b3f | 1596 | { |
cc2e0b3f | 1597 | } |
113214be | 1598 | |
c540594f DB |
1599 | static inline void bpf_prog_sub(struct bpf_prog *prog, int i) |
1600 | { | |
1601 | } | |
1602 | ||
0fc174de DB |
1603 | static inline void bpf_prog_put(struct bpf_prog *prog) |
1604 | { | |
1605 | } | |
6d67942d | 1606 | |
85192dbf | 1607 | static inline void bpf_prog_inc(struct bpf_prog *prog) |
aa6a5f3c | 1608 | { |
aa6a5f3c | 1609 | } |
5ccb071e | 1610 | |
a6f6df69 JF |
1611 | static inline struct bpf_prog *__must_check |
1612 | bpf_prog_inc_not_zero(struct bpf_prog *prog) | |
1613 | { | |
1614 | return ERR_PTR(-EOPNOTSUPP); | |
1615 | } | |
1616 | ||
6cc7d1e8 AN |
1617 | static inline void bpf_link_init(struct bpf_link *link, enum bpf_link_type type, |
1618 | const struct bpf_link_ops *ops, | |
1619 | struct bpf_prog *prog) | |
1620 | { | |
1621 | } | |
1622 | ||
1623 | static inline int bpf_link_prime(struct bpf_link *link, | |
1624 | struct bpf_link_primer *primer) | |
1625 | { | |
1626 | return -EOPNOTSUPP; | |
1627 | } | |
1628 | ||
1629 | static inline int bpf_link_settle(struct bpf_link_primer *primer) | |
1630 | { | |
1631 | return -EOPNOTSUPP; | |
1632 | } | |
1633 | ||
1634 | static inline void bpf_link_cleanup(struct bpf_link_primer *primer) | |
1635 | { | |
1636 | } | |
1637 | ||
1638 | static inline void bpf_link_inc(struct bpf_link *link) | |
1639 | { | |
1640 | } | |
1641 | ||
1642 | static inline void bpf_link_put(struct bpf_link *link) | |
1643 | { | |
1644 | } | |
1645 | ||
6e71b04a | 1646 | static inline int bpf_obj_get_user(const char __user *pathname, int flags) |
98589a09 SL |
1647 | { |
1648 | return -EOPNOTSUPP; | |
1649 | } | |
1650 | ||
fbee97fe DA |
1651 | static inline bool dev_map_can_have_prog(struct bpf_map *map) |
1652 | { | |
1653 | return false; | |
1654 | } | |
6f9d451a | 1655 | |
1d233886 | 1656 | static inline void __dev_flush(void) |
46f55cff JF |
1657 | { |
1658 | } | |
9c270af3 | 1659 | |
67f29e07 JDB |
1660 | struct xdp_buff; |
1661 | struct bpf_dtab_netdev; | |
e6a4750f | 1662 | struct bpf_cpu_map_entry; |
67f29e07 | 1663 | |
1d233886 THJ |
1664 | static inline |
1665 | int dev_xdp_enqueue(struct net_device *dev, struct xdp_buff *xdp, | |
1666 | struct net_device *dev_rx) | |
1667 | { | |
1668 | return 0; | |
1669 | } | |
1670 | ||
67f29e07 | 1671 | static inline |
38edddb8 JDB |
1672 | int dev_map_enqueue(struct bpf_dtab_netdev *dst, struct xdp_buff *xdp, |
1673 | struct net_device *dev_rx) | |
67f29e07 JDB |
1674 | { |
1675 | return 0; | |
1676 | } | |
1677 | ||
e624d4ed HL |
1678 | static inline |
1679 | int dev_map_enqueue_multi(struct xdp_buff *xdp, struct net_device *dev_rx, | |
1680 | struct bpf_map *map, bool exclude_ingress) | |
1681 | { | |
1682 | return 0; | |
1683 | } | |
1684 | ||
6d5fc195 TM |
1685 | struct sk_buff; |
1686 | ||
1687 | static inline int dev_map_generic_redirect(struct bpf_dtab_netdev *dst, | |
1688 | struct sk_buff *skb, | |
1689 | struct bpf_prog *xdp_prog) | |
1690 | { | |
1691 | return 0; | |
1692 | } | |
1693 | ||
e624d4ed HL |
1694 | static inline |
1695 | int dev_map_redirect_multi(struct net_device *dev, struct sk_buff *skb, | |
1696 | struct bpf_prog *xdp_prog, struct bpf_map *map, | |
1697 | bool exclude_ingress) | |
1698 | { | |
1699 | return 0; | |
1700 | } | |
1701 | ||
cdfafe98 | 1702 | static inline void __cpu_map_flush(void) |
9c270af3 JDB |
1703 | { |
1704 | } | |
1705 | ||
9c270af3 JDB |
1706 | static inline int cpu_map_enqueue(struct bpf_cpu_map_entry *rcpu, |
1707 | struct xdp_buff *xdp, | |
1708 | struct net_device *dev_rx) | |
1709 | { | |
1710 | return 0; | |
1711 | } | |
040ee692 | 1712 | |
92164774 LB |
1713 | static inline bool cpu_map_prog_allowed(struct bpf_map *map) |
1714 | { | |
1715 | return false; | |
1716 | } | |
1717 | ||
040ee692 AV |
1718 | static inline struct bpf_prog *bpf_prog_get_type_path(const char *name, |
1719 | enum bpf_prog_type type) | |
1720 | { | |
1721 | return ERR_PTR(-EOPNOTSUPP); | |
1722 | } | |
c695865c SF |
1723 | |
1724 | static inline int bpf_prog_test_run_xdp(struct bpf_prog *prog, | |
1725 | const union bpf_attr *kattr, | |
1726 | union bpf_attr __user *uattr) | |
1727 | { | |
1728 | return -ENOTSUPP; | |
1729 | } | |
1730 | ||
1731 | static inline int bpf_prog_test_run_skb(struct bpf_prog *prog, | |
1732 | const union bpf_attr *kattr, | |
1733 | union bpf_attr __user *uattr) | |
1734 | { | |
1735 | return -ENOTSUPP; | |
1736 | } | |
1737 | ||
da00d2f1 KS |
1738 | static inline int bpf_prog_test_run_tracing(struct bpf_prog *prog, |
1739 | const union bpf_attr *kattr, | |
1740 | union bpf_attr __user *uattr) | |
1741 | { | |
1742 | return -ENOTSUPP; | |
1743 | } | |
1744 | ||
c695865c SF |
1745 | static inline int bpf_prog_test_run_flow_dissector(struct bpf_prog *prog, |
1746 | const union bpf_attr *kattr, | |
1747 | union bpf_attr __user *uattr) | |
1748 | { | |
1749 | return -ENOTSUPP; | |
1750 | } | |
6332be04 | 1751 | |
7c32e8f8 LB |
1752 | static inline int bpf_prog_test_run_sk_lookup(struct bpf_prog *prog, |
1753 | const union bpf_attr *kattr, | |
1754 | union bpf_attr __user *uattr) | |
1755 | { | |
1756 | return -ENOTSUPP; | |
1757 | } | |
1758 | ||
7bd1590d MKL |
1759 | static inline bool bpf_prog_test_check_kfunc_call(u32 kfunc_id) |
1760 | { | |
1761 | return false; | |
1762 | } | |
1763 | ||
6332be04 DB |
1764 | static inline void bpf_map_put(struct bpf_map *map) |
1765 | { | |
1766 | } | |
7e6897f9 BT |
1767 | |
1768 | static inline struct bpf_prog *bpf_prog_by_id(u32 id) | |
1769 | { | |
1770 | return ERR_PTR(-ENOTSUPP); | |
1771 | } | |
6890896b SF |
1772 | |
1773 | static inline const struct bpf_func_proto * | |
1774 | bpf_base_func_proto(enum bpf_func_id func_id) | |
1775 | { | |
1776 | return NULL; | |
1777 | } | |
a10787e6 SL |
1778 | |
1779 | static inline void bpf_task_storage_free(struct task_struct *task) | |
1780 | { | |
1781 | } | |
e6ac2450 MKL |
1782 | |
1783 | static inline bool bpf_prog_has_kfunc_call(const struct bpf_prog *prog) | |
1784 | { | |
1785 | return false; | |
1786 | } | |
1787 | ||
1788 | static inline const struct btf_func_model * | |
1789 | bpf_jit_find_kfunc_model(const struct bpf_prog *prog, | |
1790 | const struct bpf_insn *insn) | |
1791 | { | |
1792 | return NULL; | |
1793 | } | |
61e021f3 | 1794 | #endif /* CONFIG_BPF_SYSCALL */ |
09756af4 | 1795 | |
541c3bad AN |
1796 | void __bpf_free_used_btfs(struct bpf_prog_aux *aux, |
1797 | struct btf_mod_pair *used_btfs, u32 len); | |
1798 | ||
479321e9 JK |
1799 | static inline struct bpf_prog *bpf_prog_get_type(u32 ufd, |
1800 | enum bpf_prog_type type) | |
1801 | { | |
1802 | return bpf_prog_get_type_dev(ufd, type, false); | |
1803 | } | |
1804 | ||
936f8946 AN |
1805 | void __bpf_free_used_maps(struct bpf_prog_aux *aux, |
1806 | struct bpf_map **used_maps, u32 len); | |
1807 | ||
040ee692 AV |
1808 | bool bpf_prog_get_ok(struct bpf_prog *, enum bpf_prog_type *, bool); |
1809 | ||
ab3f0063 JK |
1810 | int bpf_prog_offload_compile(struct bpf_prog *prog); |
1811 | void bpf_prog_offload_destroy(struct bpf_prog *prog); | |
675fc275 JK |
1812 | int bpf_prog_offload_info_fill(struct bpf_prog_info *info, |
1813 | struct bpf_prog *prog); | |
ab3f0063 | 1814 | |
52775b33 JK |
1815 | int bpf_map_offload_info_fill(struct bpf_map_info *info, struct bpf_map *map); |
1816 | ||
a3884572 JK |
1817 | int bpf_map_offload_lookup_elem(struct bpf_map *map, void *key, void *value); |
1818 | int bpf_map_offload_update_elem(struct bpf_map *map, | |
1819 | void *key, void *value, u64 flags); | |
1820 | int bpf_map_offload_delete_elem(struct bpf_map *map, void *key); | |
1821 | int bpf_map_offload_get_next_key(struct bpf_map *map, | |
1822 | void *key, void *next_key); | |
1823 | ||
09728266 | 1824 | bool bpf_offload_prog_map_match(struct bpf_prog *prog, struct bpf_map *map); |
a3884572 | 1825 | |
1385d755 | 1826 | struct bpf_offload_dev * |
dd27c2e3 | 1827 | bpf_offload_dev_create(const struct bpf_prog_offload_ops *ops, void *priv); |
602144c2 | 1828 | void bpf_offload_dev_destroy(struct bpf_offload_dev *offdev); |
dd27c2e3 | 1829 | void *bpf_offload_dev_priv(struct bpf_offload_dev *offdev); |
602144c2 JK |
1830 | int bpf_offload_dev_netdev_register(struct bpf_offload_dev *offdev, |
1831 | struct net_device *netdev); | |
1832 | void bpf_offload_dev_netdev_unregister(struct bpf_offload_dev *offdev, | |
1833 | struct net_device *netdev); | |
fd4f227d | 1834 | bool bpf_offload_dev_match(struct bpf_prog *prog, struct net_device *netdev); |
9fd7c555 | 1835 | |
ab3f0063 JK |
1836 | #if defined(CONFIG_NET) && defined(CONFIG_BPF_SYSCALL) |
1837 | int bpf_prog_offload_init(struct bpf_prog *prog, union bpf_attr *attr); | |
1838 | ||
0d830032 | 1839 | static inline bool bpf_prog_is_dev_bound(const struct bpf_prog_aux *aux) |
ab3f0063 | 1840 | { |
9a18eedb | 1841 | return aux->offload_requested; |
ab3f0063 | 1842 | } |
a3884572 JK |
1843 | |
1844 | static inline bool bpf_map_is_dev_bound(struct bpf_map *map) | |
1845 | { | |
1846 | return unlikely(map->ops == &bpf_map_offload_ops); | |
1847 | } | |
1848 | ||
1849 | struct bpf_map *bpf_map_offload_map_alloc(union bpf_attr *attr); | |
1850 | void bpf_map_offload_map_free(struct bpf_map *map); | |
79a7f8bd AS |
1851 | int bpf_prog_test_run_syscall(struct bpf_prog *prog, |
1852 | const union bpf_attr *kattr, | |
1853 | union bpf_attr __user *uattr); | |
ab3f0063 JK |
1854 | #else |
1855 | static inline int bpf_prog_offload_init(struct bpf_prog *prog, | |
1856 | union bpf_attr *attr) | |
1857 | { | |
1858 | return -EOPNOTSUPP; | |
1859 | } | |
1860 | ||
1861 | static inline bool bpf_prog_is_dev_bound(struct bpf_prog_aux *aux) | |
1862 | { | |
1863 | return false; | |
1864 | } | |
a3884572 JK |
1865 | |
1866 | static inline bool bpf_map_is_dev_bound(struct bpf_map *map) | |
1867 | { | |
1868 | return false; | |
1869 | } | |
1870 | ||
1871 | static inline struct bpf_map *bpf_map_offload_map_alloc(union bpf_attr *attr) | |
1872 | { | |
1873 | return ERR_PTR(-EOPNOTSUPP); | |
1874 | } | |
1875 | ||
1876 | static inline void bpf_map_offload_map_free(struct bpf_map *map) | |
1877 | { | |
1878 | } | |
79a7f8bd AS |
1879 | |
1880 | static inline int bpf_prog_test_run_syscall(struct bpf_prog *prog, | |
1881 | const union bpf_attr *kattr, | |
1882 | union bpf_attr __user *uattr) | |
1883 | { | |
1884 | return -ENOTSUPP; | |
1885 | } | |
ab3f0063 JK |
1886 | #endif /* CONFIG_NET && CONFIG_BPF_SYSCALL */ |
1887 | ||
88759609 | 1888 | #if defined(CONFIG_INET) && defined(CONFIG_BPF_SYSCALL) |
604326b4 | 1889 | int sock_map_get_from_fd(const union bpf_attr *attr, struct bpf_prog *prog); |
bb0de313 | 1890 | int sock_map_prog_detach(const union bpf_attr *attr, enum bpf_prog_type ptype); |
13b79d3f | 1891 | int sock_map_update_elem_sys(struct bpf_map *map, void *key, void *value, u64 flags); |
f747632b LB |
1892 | void sock_map_unhash(struct sock *sk); |
1893 | void sock_map_close(struct sock *sk, long timeout); | |
88759609 CW |
1894 | |
1895 | void bpf_sk_reuseport_detach(struct sock *sk); | |
1896 | int bpf_fd_reuseport_array_lookup_elem(struct bpf_map *map, void *key, | |
1897 | void *value); | |
1898 | int bpf_fd_reuseport_array_update_elem(struct bpf_map *map, void *key, | |
1899 | void *value, u64 map_flags); | |
6bdc9c4c | 1900 | #else |
88759609 | 1901 | static inline void bpf_sk_reuseport_detach(struct sock *sk) |
464bc0fd | 1902 | { |
464bc0fd | 1903 | } |
fdb5c453 | 1904 | |
88759609 | 1905 | #ifdef CONFIG_BPF_SYSCALL |
604326b4 DB |
1906 | static inline int sock_map_get_from_fd(const union bpf_attr *attr, |
1907 | struct bpf_prog *prog) | |
fdb5c453 SY |
1908 | { |
1909 | return -EINVAL; | |
1910 | } | |
bb0de313 LB |
1911 | |
1912 | static inline int sock_map_prog_detach(const union bpf_attr *attr, | |
1913 | enum bpf_prog_type ptype) | |
1914 | { | |
1915 | return -EOPNOTSUPP; | |
1916 | } | |
13b79d3f LB |
1917 | |
1918 | static inline int sock_map_update_elem_sys(struct bpf_map *map, void *key, void *value, | |
1919 | u64 flags) | |
1920 | { | |
1921 | return -EOPNOTSUPP; | |
1922 | } | |
5dc4c4b7 | 1923 | |
5dc4c4b7 MKL |
1924 | static inline int bpf_fd_reuseport_array_lookup_elem(struct bpf_map *map, |
1925 | void *key, void *value) | |
1926 | { | |
1927 | return -EOPNOTSUPP; | |
1928 | } | |
1929 | ||
1930 | static inline int bpf_fd_reuseport_array_update_elem(struct bpf_map *map, | |
1931 | void *key, void *value, | |
1932 | u64 map_flags) | |
1933 | { | |
1934 | return -EOPNOTSUPP; | |
1935 | } | |
1936 | #endif /* CONFIG_BPF_SYSCALL */ | |
1937 | #endif /* defined(CONFIG_INET) && defined(CONFIG_BPF_SYSCALL) */ | |
1938 | ||
d0003ec0 | 1939 | /* verifier prototypes for helper functions called from eBPF programs */ |
a2c83fff DB |
1940 | extern const struct bpf_func_proto bpf_map_lookup_elem_proto; |
1941 | extern const struct bpf_func_proto bpf_map_update_elem_proto; | |
1942 | extern const struct bpf_func_proto bpf_map_delete_elem_proto; | |
f1a2e44a MV |
1943 | extern const struct bpf_func_proto bpf_map_push_elem_proto; |
1944 | extern const struct bpf_func_proto bpf_map_pop_elem_proto; | |
1945 | extern const struct bpf_func_proto bpf_map_peek_elem_proto; | |
d0003ec0 | 1946 | |
03e69b50 | 1947 | extern const struct bpf_func_proto bpf_get_prandom_u32_proto; |
c04167ce | 1948 | extern const struct bpf_func_proto bpf_get_smp_processor_id_proto; |
2d0e30c3 | 1949 | extern const struct bpf_func_proto bpf_get_numa_node_id_proto; |
04fd61ab | 1950 | extern const struct bpf_func_proto bpf_tail_call_proto; |
17ca8cbf | 1951 | extern const struct bpf_func_proto bpf_ktime_get_ns_proto; |
71d19214 | 1952 | extern const struct bpf_func_proto bpf_ktime_get_boot_ns_proto; |
ffeedafb AS |
1953 | extern const struct bpf_func_proto bpf_get_current_pid_tgid_proto; |
1954 | extern const struct bpf_func_proto bpf_get_current_uid_gid_proto; | |
1955 | extern const struct bpf_func_proto bpf_get_current_comm_proto; | |
d5a3b1f6 | 1956 | extern const struct bpf_func_proto bpf_get_stackid_proto; |
c195651e | 1957 | extern const struct bpf_func_proto bpf_get_stack_proto; |
fa28dcb8 | 1958 | extern const struct bpf_func_proto bpf_get_task_stack_proto; |
7b04d6d6 SL |
1959 | extern const struct bpf_func_proto bpf_get_stackid_proto_pe; |
1960 | extern const struct bpf_func_proto bpf_get_stack_proto_pe; | |
174a79ff | 1961 | extern const struct bpf_func_proto bpf_sock_map_update_proto; |
81110384 | 1962 | extern const struct bpf_func_proto bpf_sock_hash_update_proto; |
bf6fa2c8 | 1963 | extern const struct bpf_func_proto bpf_get_current_cgroup_id_proto; |
0f09abd1 | 1964 | extern const struct bpf_func_proto bpf_get_current_ancestor_cgroup_id_proto; |
604326b4 DB |
1965 | extern const struct bpf_func_proto bpf_msg_redirect_hash_proto; |
1966 | extern const struct bpf_func_proto bpf_msg_redirect_map_proto; | |
1967 | extern const struct bpf_func_proto bpf_sk_redirect_hash_proto; | |
1968 | extern const struct bpf_func_proto bpf_sk_redirect_map_proto; | |
d83525ca AS |
1969 | extern const struct bpf_func_proto bpf_spin_lock_proto; |
1970 | extern const struct bpf_func_proto bpf_spin_unlock_proto; | |
cd339431 | 1971 | extern const struct bpf_func_proto bpf_get_local_storage_proto; |
d7a4cb9b AI |
1972 | extern const struct bpf_func_proto bpf_strtol_proto; |
1973 | extern const struct bpf_func_proto bpf_strtoul_proto; | |
0d01da6a | 1974 | extern const struct bpf_func_proto bpf_tcp_sock_proto; |
5576b991 | 1975 | extern const struct bpf_func_proto bpf_jiffies64_proto; |
b4490c5c | 1976 | extern const struct bpf_func_proto bpf_get_ns_current_pid_tgid_proto; |
0456ea17 | 1977 | extern const struct bpf_func_proto bpf_event_output_data_proto; |
457f4436 AN |
1978 | extern const struct bpf_func_proto bpf_ringbuf_output_proto; |
1979 | extern const struct bpf_func_proto bpf_ringbuf_reserve_proto; | |
1980 | extern const struct bpf_func_proto bpf_ringbuf_submit_proto; | |
1981 | extern const struct bpf_func_proto bpf_ringbuf_discard_proto; | |
1982 | extern const struct bpf_func_proto bpf_ringbuf_query_proto; | |
af7ec138 | 1983 | extern const struct bpf_func_proto bpf_skc_to_tcp6_sock_proto; |
478cfbdf YS |
1984 | extern const struct bpf_func_proto bpf_skc_to_tcp_sock_proto; |
1985 | extern const struct bpf_func_proto bpf_skc_to_tcp_timewait_sock_proto; | |
1986 | extern const struct bpf_func_proto bpf_skc_to_tcp_request_sock_proto; | |
0d4fad3e | 1987 | extern const struct bpf_func_proto bpf_skc_to_udp6_sock_proto; |
07be4c4a | 1988 | extern const struct bpf_func_proto bpf_copy_from_user_proto; |
c4d0bfb4 | 1989 | extern const struct bpf_func_proto bpf_snprintf_btf_proto; |
7b15523a | 1990 | extern const struct bpf_func_proto bpf_snprintf_proto; |
eaa6bcb7 | 1991 | extern const struct bpf_func_proto bpf_per_cpu_ptr_proto; |
63d9b80d | 1992 | extern const struct bpf_func_proto bpf_this_cpu_ptr_proto; |
d0551261 | 1993 | extern const struct bpf_func_proto bpf_ktime_get_coarse_ns_proto; |
b60da495 | 1994 | extern const struct bpf_func_proto bpf_sock_from_file_proto; |
c5dbb89f | 1995 | extern const struct bpf_func_proto bpf_get_socket_ptr_cookie_proto; |
a10787e6 SL |
1996 | extern const struct bpf_func_proto bpf_task_storage_get_proto; |
1997 | extern const struct bpf_func_proto bpf_task_storage_delete_proto; | |
69c087ba | 1998 | extern const struct bpf_func_proto bpf_for_each_map_elem_proto; |
3d78417b | 1999 | extern const struct bpf_func_proto bpf_btf_find_by_name_kind_proto; |
cd339431 | 2000 | |
fc611f47 KS |
2001 | const struct bpf_func_proto *bpf_tracing_func_proto( |
2002 | enum bpf_func_id func_id, const struct bpf_prog *prog); | |
2003 | ||
958a3f2d JO |
2004 | const struct bpf_func_proto *tracing_prog_func_proto( |
2005 | enum bpf_func_id func_id, const struct bpf_prog *prog); | |
2006 | ||
3ad00405 DB |
2007 | /* Shared helpers among cBPF and eBPF. */ |
2008 | void bpf_user_rnd_init_once(void); | |
2009 | u64 bpf_user_rnd_u32(u64 r1, u64 r2, u64 r3, u64 r4, u64 r5); | |
6890896b | 2010 | u64 bpf_get_raw_cpu_id(u64 r1, u64 r2, u64 r3, u64 r4, u64 r5); |
3ad00405 | 2011 | |
c64b7983 | 2012 | #if defined(CONFIG_NET) |
46f8bc92 MKL |
2013 | bool bpf_sock_common_is_valid_access(int off, int size, |
2014 | enum bpf_access_type type, | |
2015 | struct bpf_insn_access_aux *info); | |
c64b7983 JS |
2016 | bool bpf_sock_is_valid_access(int off, int size, enum bpf_access_type type, |
2017 | struct bpf_insn_access_aux *info); | |
2018 | u32 bpf_sock_convert_ctx_access(enum bpf_access_type type, | |
2019 | const struct bpf_insn *si, | |
2020 | struct bpf_insn *insn_buf, | |
2021 | struct bpf_prog *prog, | |
2022 | u32 *target_size); | |
2023 | #else | |
46f8bc92 MKL |
2024 | static inline bool bpf_sock_common_is_valid_access(int off, int size, |
2025 | enum bpf_access_type type, | |
2026 | struct bpf_insn_access_aux *info) | |
2027 | { | |
2028 | return false; | |
2029 | } | |
c64b7983 JS |
2030 | static inline bool bpf_sock_is_valid_access(int off, int size, |
2031 | enum bpf_access_type type, | |
2032 | struct bpf_insn_access_aux *info) | |
2033 | { | |
2034 | return false; | |
2035 | } | |
2036 | static inline u32 bpf_sock_convert_ctx_access(enum bpf_access_type type, | |
2037 | const struct bpf_insn *si, | |
2038 | struct bpf_insn *insn_buf, | |
2039 | struct bpf_prog *prog, | |
2040 | u32 *target_size) | |
2041 | { | |
2042 | return 0; | |
2043 | } | |
2044 | #endif | |
2045 | ||
655a51e5 | 2046 | #ifdef CONFIG_INET |
91cc1a99 AS |
2047 | struct sk_reuseport_kern { |
2048 | struct sk_buff *skb; | |
2049 | struct sock *sk; | |
2050 | struct sock *selected_sk; | |
d5e4ddae | 2051 | struct sock *migrating_sk; |
91cc1a99 AS |
2052 | void *data_end; |
2053 | u32 hash; | |
2054 | u32 reuseport_id; | |
2055 | bool bind_inany; | |
2056 | }; | |
655a51e5 MKL |
2057 | bool bpf_tcp_sock_is_valid_access(int off, int size, enum bpf_access_type type, |
2058 | struct bpf_insn_access_aux *info); | |
2059 | ||
2060 | u32 bpf_tcp_sock_convert_ctx_access(enum bpf_access_type type, | |
2061 | const struct bpf_insn *si, | |
2062 | struct bpf_insn *insn_buf, | |
2063 | struct bpf_prog *prog, | |
2064 | u32 *target_size); | |
7f94208c Y |
2065 | |
2066 | bool bpf_xdp_sock_is_valid_access(int off, int size, enum bpf_access_type type, | |
2067 | struct bpf_insn_access_aux *info); | |
2068 | ||
2069 | u32 bpf_xdp_sock_convert_ctx_access(enum bpf_access_type type, | |
2070 | const struct bpf_insn *si, | |
2071 | struct bpf_insn *insn_buf, | |
2072 | struct bpf_prog *prog, | |
2073 | u32 *target_size); | |
655a51e5 MKL |
2074 | #else |
2075 | static inline bool bpf_tcp_sock_is_valid_access(int off, int size, | |
2076 | enum bpf_access_type type, | |
2077 | struct bpf_insn_access_aux *info) | |
2078 | { | |
2079 | return false; | |
2080 | } | |
2081 | ||
2082 | static inline u32 bpf_tcp_sock_convert_ctx_access(enum bpf_access_type type, | |
2083 | const struct bpf_insn *si, | |
2084 | struct bpf_insn *insn_buf, | |
2085 | struct bpf_prog *prog, | |
2086 | u32 *target_size) | |
2087 | { | |
2088 | return 0; | |
2089 | } | |
7f94208c Y |
2090 | static inline bool bpf_xdp_sock_is_valid_access(int off, int size, |
2091 | enum bpf_access_type type, | |
2092 | struct bpf_insn_access_aux *info) | |
2093 | { | |
2094 | return false; | |
2095 | } | |
2096 | ||
2097 | static inline u32 bpf_xdp_sock_convert_ctx_access(enum bpf_access_type type, | |
2098 | const struct bpf_insn *si, | |
2099 | struct bpf_insn *insn_buf, | |
2100 | struct bpf_prog *prog, | |
2101 | u32 *target_size) | |
2102 | { | |
2103 | return 0; | |
2104 | } | |
655a51e5 MKL |
2105 | #endif /* CONFIG_INET */ |
2106 | ||
5964b200 | 2107 | enum bpf_text_poke_type { |
b553a6ec DB |
2108 | BPF_MOD_CALL, |
2109 | BPF_MOD_JUMP, | |
5964b200 | 2110 | }; |
4b3da77b | 2111 | |
5964b200 AS |
2112 | int bpf_arch_text_poke(void *ip, enum bpf_text_poke_type t, |
2113 | void *addr1, void *addr2); | |
2114 | ||
eae2e83e | 2115 | struct btf_id_set; |
2af30f11 | 2116 | bool btf_id_set_contains(const struct btf_id_set *set, u32 id); |
eae2e83e | 2117 | |
48cac3f4 FR |
2118 | int bpf_bprintf_prepare(char *fmt, u32 fmt_size, const u64 *raw_args, |
2119 | u32 **bin_buf, u32 num_args); | |
2120 | void bpf_bprintf_cleanup(void); | |
d9c9e4db | 2121 | |
99c55f7d | 2122 | #endif /* _LINUX_BPF_H */ |