1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _BPF_CGROUP_H
3 #define _BPF_CGROUP_H
4
5 #include <linux/bpf.h>
6 #include <linux/errno.h>
7 #include <linux/jump_label.h>
8 #include <linux/percpu.h>
9 #include <linux/percpu-refcount.h>
10 #include <linux/rbtree.h>
11 #include <uapi/linux/bpf.h>
12
13 struct sock;
14 struct sockaddr;
15 struct cgroup;
16 struct sk_buff;
17 struct bpf_map;
18 struct bpf_prog;
19 struct bpf_sock_ops_kern;
20 struct bpf_cgroup_storage;
21 struct ctl_table;
22 struct ctl_table_header;
23 struct task_struct;
24
25 #ifdef CONFIG_CGROUP_BPF
26 enum cgroup_bpf_attach_type {
27 CGROUP_BPF_ATTACH_TYPE_INVALID = -1,
28 CGROUP_INET_INGRESS = 0,
29 CGROUP_INET_EGRESS,
30 CGROUP_INET_SOCK_CREATE,
31 CGROUP_SOCK_OPS,
32 CGROUP_DEVICE,
33 CGROUP_INET4_BIND,
34 CGROUP_INET6_BIND,
35 CGROUP_INET4_CONNECT,
36 CGROUP_INET6_CONNECT,
37 CGROUP_INET4_POST_BIND,
38 CGROUP_INET6_POST_BIND,
39 CGROUP_UDP4_SENDMSG,
40 CGROUP_UDP6_SENDMSG,
41 CGROUP_SYSCTL,
42 CGROUP_UDP4_RECVMSG,
43 CGROUP_UDP6_RECVMSG,
44 CGROUP_GETSOCKOPT,
45 CGROUP_SETSOCKOPT,
46 CGROUP_INET4_GETPEERNAME,
47 CGROUP_INET6_GETPEERNAME,
48 CGROUP_INET4_GETSOCKNAME,
49 CGROUP_INET6_GETSOCKNAME,
50 CGROUP_INET_SOCK_RELEASE,
51 MAX_CGROUP_BPF_ATTACH_TYPE
52 };
53
54 #define CGROUP_ATYPE(type) \
55 case BPF_##type: return type
56
57 static inline enum cgroup_bpf_attach_type
to_cgroup_bpf_attach_type(enum bpf_attach_type attach_type)58 to_cgroup_bpf_attach_type(enum bpf_attach_type attach_type)
59 {
60 switch (attach_type) {
61 CGROUP_ATYPE(CGROUP_INET_INGRESS);
62 CGROUP_ATYPE(CGROUP_INET_EGRESS);
63 CGROUP_ATYPE(CGROUP_INET_SOCK_CREATE);
64 CGROUP_ATYPE(CGROUP_SOCK_OPS);
65 CGROUP_ATYPE(CGROUP_DEVICE);
66 CGROUP_ATYPE(CGROUP_INET4_BIND);
67 CGROUP_ATYPE(CGROUP_INET6_BIND);
68 CGROUP_ATYPE(CGROUP_INET4_CONNECT);
69 CGROUP_ATYPE(CGROUP_INET6_CONNECT);
70 CGROUP_ATYPE(CGROUP_INET4_POST_BIND);
71 CGROUP_ATYPE(CGROUP_INET6_POST_BIND);
72 CGROUP_ATYPE(CGROUP_UDP4_SENDMSG);
73 CGROUP_ATYPE(CGROUP_UDP6_SENDMSG);
74 CGROUP_ATYPE(CGROUP_SYSCTL);
75 CGROUP_ATYPE(CGROUP_UDP4_RECVMSG);
76 CGROUP_ATYPE(CGROUP_UDP6_RECVMSG);
77 CGROUP_ATYPE(CGROUP_GETSOCKOPT);
78 CGROUP_ATYPE(CGROUP_SETSOCKOPT);
79 CGROUP_ATYPE(CGROUP_INET4_GETPEERNAME);
80 CGROUP_ATYPE(CGROUP_INET6_GETPEERNAME);
81 CGROUP_ATYPE(CGROUP_INET4_GETSOCKNAME);
82 CGROUP_ATYPE(CGROUP_INET6_GETSOCKNAME);
83 CGROUP_ATYPE(CGROUP_INET_SOCK_RELEASE);
84 default:
85 return CGROUP_BPF_ATTACH_TYPE_INVALID;
86 }
87 }
88
89 #undef CGROUP_ATYPE
90
91 extern struct static_key_false cgroup_bpf_enabled_key[MAX_CGROUP_BPF_ATTACH_TYPE];
92 #define cgroup_bpf_enabled(atype) static_branch_unlikely(&cgroup_bpf_enabled_key[atype])
93
94 #define for_each_cgroup_storage_type(stype) \
95 for (stype = 0; stype < MAX_BPF_CGROUP_STORAGE_TYPE; stype++)
96
97 struct bpf_cgroup_storage_map;
98
99 struct bpf_storage_buffer {
100 struct rcu_head rcu;
101 char data[];
102 };
103
104 struct bpf_cgroup_storage {
105 union {
106 struct bpf_storage_buffer *buf;
107 void __percpu *percpu_buf;
108 };
109 struct bpf_cgroup_storage_map *map;
110 struct bpf_cgroup_storage_key key;
111 struct list_head list_map;
112 struct list_head list_cg;
113 struct rb_node node;
114 struct rcu_head rcu;
115 };
116
117 struct bpf_cgroup_link {
118 struct bpf_link link;
119 struct cgroup *cgroup;
120 enum bpf_attach_type type;
121 };
122
123 struct bpf_prog_list {
124 struct list_head node;
125 struct bpf_prog *prog;
126 struct bpf_cgroup_link *link;
127 struct bpf_cgroup_storage *storage[MAX_BPF_CGROUP_STORAGE_TYPE];
128 };
129
130 struct bpf_prog_array;
131
132 struct cgroup_bpf {
133 /* array of effective progs in this cgroup */
134 struct bpf_prog_array __rcu *effective[MAX_CGROUP_BPF_ATTACH_TYPE];
135
136 /* attached progs to this cgroup and attach flags
137 * when flags == 0 or BPF_F_ALLOW_OVERRIDE the progs list will
138 * have either zero or one element
139 * when BPF_F_ALLOW_MULTI the list can have up to BPF_CGROUP_MAX_PROGS
140 */
141 struct list_head progs[MAX_CGROUP_BPF_ATTACH_TYPE];
142 u32 flags[MAX_CGROUP_BPF_ATTACH_TYPE];
143
144 /* list of cgroup shared storages */
145 struct list_head storages;
146
147 /* temp storage for effective prog array used by prog_attach/detach */
148 struct bpf_prog_array *inactive;
149
150 /* reference counter used to detach bpf programs after cgroup removal */
151 struct percpu_ref refcnt;
152
153 /* cgroup_bpf is released using a work queue */
154 struct work_struct release_work;
155 };
156
157 int cgroup_bpf_inherit(struct cgroup *cgrp);
158 void cgroup_bpf_offline(struct cgroup *cgrp);
159
160 int __cgroup_bpf_attach(struct cgroup *cgrp,
161 struct bpf_prog *prog, struct bpf_prog *replace_prog,
162 struct bpf_cgroup_link *link,
163 enum bpf_attach_type type, u32 flags);
164 int __cgroup_bpf_detach(struct cgroup *cgrp, struct bpf_prog *prog,
165 struct bpf_cgroup_link *link,
166 enum bpf_attach_type type);
167 int __cgroup_bpf_query(struct cgroup *cgrp, const union bpf_attr *attr,
168 union bpf_attr __user *uattr);
169
170 /* Wrapper for __cgroup_bpf_*() protected by cgroup_mutex */
171 int cgroup_bpf_attach(struct cgroup *cgrp,
172 struct bpf_prog *prog, struct bpf_prog *replace_prog,
173 struct bpf_cgroup_link *link, enum bpf_attach_type type,
174 u32 flags);
175 int cgroup_bpf_detach(struct cgroup *cgrp, struct bpf_prog *prog,
176 enum bpf_attach_type type);
177 int cgroup_bpf_query(struct cgroup *cgrp, const union bpf_attr *attr,
178 union bpf_attr __user *uattr);
179
180 int __cgroup_bpf_run_filter_skb(struct sock *sk,
181 struct sk_buff *skb,
182 enum cgroup_bpf_attach_type atype);
183
184 int __cgroup_bpf_run_filter_sk(struct sock *sk,
185 enum cgroup_bpf_attach_type atype);
186
187 int __cgroup_bpf_run_filter_sock_addr(struct sock *sk,
188 struct sockaddr *uaddr,
189 enum cgroup_bpf_attach_type atype,
190 void *t_ctx,
191 u32 *flags);
192
193 int __cgroup_bpf_run_filter_sock_ops(struct sock *sk,
194 struct bpf_sock_ops_kern *sock_ops,
195 enum cgroup_bpf_attach_type atype);
196
197 int __cgroup_bpf_check_dev_permission(short dev_type, u32 major, u32 minor,
198 short access, enum cgroup_bpf_attach_type atype);
199
200 int __cgroup_bpf_run_filter_sysctl(struct ctl_table_header *head,
201 struct ctl_table *table, int write,
202 char **buf, size_t *pcount, loff_t *ppos,
203 enum cgroup_bpf_attach_type atype);
204
205 int __cgroup_bpf_run_filter_setsockopt(struct sock *sock, int *level,
206 int *optname, char __user *optval,
207 int *optlen, char **kernel_optval);
208 int __cgroup_bpf_run_filter_getsockopt(struct sock *sk, int level,
209 int optname, char __user *optval,
210 int __user *optlen, int max_optlen,
211 int retval);
212
213 int __cgroup_bpf_run_filter_getsockopt_kern(struct sock *sk, int level,
214 int optname, void *optval,
215 int *optlen, int retval);
216
cgroup_storage_type(struct bpf_map * map)217 static inline enum bpf_cgroup_storage_type cgroup_storage_type(
218 struct bpf_map *map)
219 {
220 if (map->map_type == BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE)
221 return BPF_CGROUP_STORAGE_PERCPU;
222
223 return BPF_CGROUP_STORAGE_SHARED;
224 }
225
226 struct bpf_cgroup_storage *
227 cgroup_storage_lookup(struct bpf_cgroup_storage_map *map,
228 void *key, bool locked);
229 struct bpf_cgroup_storage *bpf_cgroup_storage_alloc(struct bpf_prog *prog,
230 enum bpf_cgroup_storage_type stype);
231 void bpf_cgroup_storage_free(struct bpf_cgroup_storage *storage);
232 void bpf_cgroup_storage_link(struct bpf_cgroup_storage *storage,
233 struct cgroup *cgroup,
234 enum bpf_attach_type type);
235 void bpf_cgroup_storage_unlink(struct bpf_cgroup_storage *storage);
236 int bpf_cgroup_storage_assign(struct bpf_prog_aux *aux, struct bpf_map *map);
237
238 int bpf_percpu_cgroup_storage_copy(struct bpf_map *map, void *key, void *value);
239 int bpf_percpu_cgroup_storage_update(struct bpf_map *map, void *key,
240 void *value, u64 flags);
241
242 /* Wrappers for __cgroup_bpf_run_filter_skb() guarded by cgroup_bpf_enabled. */
243 #define BPF_CGROUP_RUN_PROG_INET_INGRESS(sk, skb) \
244 ({ \
245 int __ret = 0; \
246 if (cgroup_bpf_enabled(CGROUP_INET_INGRESS)) \
247 __ret = __cgroup_bpf_run_filter_skb(sk, skb, \
248 CGROUP_INET_INGRESS); \
249 \
250 __ret; \
251 })
252
253 #define BPF_CGROUP_RUN_PROG_INET_EGRESS(sk, skb) \
254 ({ \
255 int __ret = 0; \
256 if (cgroup_bpf_enabled(CGROUP_INET_EGRESS) && sk && sk == skb->sk) { \
257 typeof(sk) __sk = sk_to_full_sk(sk); \
258 if (sk_fullsock(__sk)) \
259 __ret = __cgroup_bpf_run_filter_skb(__sk, skb, \
260 CGROUP_INET_EGRESS); \
261 } \
262 __ret; \
263 })
264
265 #define BPF_CGROUP_RUN_SK_PROG(sk, atype) \
266 ({ \
267 int __ret = 0; \
268 if (cgroup_bpf_enabled(atype)) { \
269 __ret = __cgroup_bpf_run_filter_sk(sk, atype); \
270 } \
271 __ret; \
272 })
273
274 #define BPF_CGROUP_RUN_PROG_INET_SOCK(sk) \
275 BPF_CGROUP_RUN_SK_PROG(sk, CGROUP_INET_SOCK_CREATE)
276
277 #define BPF_CGROUP_RUN_PROG_INET_SOCK_RELEASE(sk) \
278 BPF_CGROUP_RUN_SK_PROG(sk, CGROUP_INET_SOCK_RELEASE)
279
280 #define BPF_CGROUP_RUN_PROG_INET4_POST_BIND(sk) \
281 BPF_CGROUP_RUN_SK_PROG(sk, CGROUP_INET4_POST_BIND)
282
283 #define BPF_CGROUP_RUN_PROG_INET6_POST_BIND(sk) \
284 BPF_CGROUP_RUN_SK_PROG(sk, CGROUP_INET6_POST_BIND)
285
286 #define BPF_CGROUP_RUN_SA_PROG(sk, uaddr, atype) \
287 ({ \
288 u32 __unused_flags; \
289 int __ret = 0; \
290 if (cgroup_bpf_enabled(atype)) \
291 __ret = __cgroup_bpf_run_filter_sock_addr(sk, uaddr, atype, \
292 NULL, \
293 &__unused_flags); \
294 __ret; \
295 })
296
297 #define BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, atype, t_ctx) \
298 ({ \
299 u32 __unused_flags; \
300 int __ret = 0; \
301 if (cgroup_bpf_enabled(atype)) { \
302 lock_sock(sk); \
303 __ret = __cgroup_bpf_run_filter_sock_addr(sk, uaddr, atype, \
304 t_ctx, \
305 &__unused_flags); \
306 release_sock(sk); \
307 } \
308 __ret; \
309 })
310
311 /* BPF_CGROUP_INET4_BIND and BPF_CGROUP_INET6_BIND can return extra flags
312 * via upper bits of return code. The only flag that is supported
313 * (at bit position 0) is to indicate CAP_NET_BIND_SERVICE capability check
314 * should be bypassed (BPF_RET_BIND_NO_CAP_NET_BIND_SERVICE).
315 */
316 #define BPF_CGROUP_RUN_PROG_INET_BIND_LOCK(sk, uaddr, atype, bind_flags) \
317 ({ \
318 u32 __flags = 0; \
319 int __ret = 0; \
320 if (cgroup_bpf_enabled(atype)) { \
321 lock_sock(sk); \
322 __ret = __cgroup_bpf_run_filter_sock_addr(sk, uaddr, atype, \
323 NULL, &__flags); \
324 release_sock(sk); \
325 if (__flags & BPF_RET_BIND_NO_CAP_NET_BIND_SERVICE) \
326 *bind_flags |= BIND_NO_CAP_NET_BIND_SERVICE; \
327 } \
328 __ret; \
329 })
330
331 #define BPF_CGROUP_PRE_CONNECT_ENABLED(sk) \
332 ((cgroup_bpf_enabled(CGROUP_INET4_CONNECT) || \
333 cgroup_bpf_enabled(CGROUP_INET6_CONNECT)) && \
334 (sk)->sk_prot->pre_connect)
335
336 #define BPF_CGROUP_RUN_PROG_INET4_CONNECT(sk, uaddr) \
337 BPF_CGROUP_RUN_SA_PROG(sk, uaddr, CGROUP_INET4_CONNECT)
338
339 #define BPF_CGROUP_RUN_PROG_INET6_CONNECT(sk, uaddr) \
340 BPF_CGROUP_RUN_SA_PROG(sk, uaddr, CGROUP_INET6_CONNECT)
341
342 #define BPF_CGROUP_RUN_PROG_INET4_CONNECT_LOCK(sk, uaddr) \
343 BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, CGROUP_INET4_CONNECT, NULL)
344
345 #define BPF_CGROUP_RUN_PROG_INET6_CONNECT_LOCK(sk, uaddr) \
346 BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, CGROUP_INET6_CONNECT, NULL)
347
348 #define BPF_CGROUP_RUN_PROG_UDP4_SENDMSG_LOCK(sk, uaddr, t_ctx) \
349 BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, CGROUP_UDP4_SENDMSG, t_ctx)
350
351 #define BPF_CGROUP_RUN_PROG_UDP6_SENDMSG_LOCK(sk, uaddr, t_ctx) \
352 BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, CGROUP_UDP6_SENDMSG, t_ctx)
353
354 #define BPF_CGROUP_RUN_PROG_UDP4_RECVMSG_LOCK(sk, uaddr) \
355 BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, CGROUP_UDP4_RECVMSG, NULL)
356
357 #define BPF_CGROUP_RUN_PROG_UDP6_RECVMSG_LOCK(sk, uaddr) \
358 BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, CGROUP_UDP6_RECVMSG, NULL)
359
360 /* The SOCK_OPS"_SK" macro should be used when sock_ops->sk is not a
361 * fullsock and its parent fullsock cannot be traced by
362 * sk_to_full_sk().
363 *
364 * e.g. sock_ops->sk is a request_sock and it is under syncookie mode.
365 * Its listener-sk is not attached to the rsk_listener.
366 * In this case, the caller holds the listener-sk (unlocked),
367 * set its sock_ops->sk to req_sk, and call this SOCK_OPS"_SK" with
368 * the listener-sk such that the cgroup-bpf-progs of the
369 * listener-sk will be run.
370 *
371 * Regardless of syncookie mode or not,
372 * calling bpf_setsockopt on listener-sk will not make sense anyway,
373 * so passing 'sock_ops->sk == req_sk' to the bpf prog is appropriate here.
374 */
375 #define BPF_CGROUP_RUN_PROG_SOCK_OPS_SK(sock_ops, sk) \
376 ({ \
377 int __ret = 0; \
378 if (cgroup_bpf_enabled(CGROUP_SOCK_OPS)) \
379 __ret = __cgroup_bpf_run_filter_sock_ops(sk, \
380 sock_ops, \
381 CGROUP_SOCK_OPS); \
382 __ret; \
383 })
384
385 #define BPF_CGROUP_RUN_PROG_SOCK_OPS(sock_ops) \
386 ({ \
387 int __ret = 0; \
388 if (cgroup_bpf_enabled(CGROUP_SOCK_OPS) && (sock_ops)->sk) { \
389 typeof(sk) __sk = sk_to_full_sk((sock_ops)->sk); \
390 if (__sk && sk_fullsock(__sk)) \
391 __ret = __cgroup_bpf_run_filter_sock_ops(__sk, \
392 sock_ops, \
393 CGROUP_SOCK_OPS); \
394 } \
395 __ret; \
396 })
397
398 #define BPF_CGROUP_RUN_PROG_DEVICE_CGROUP(atype, major, minor, access) \
399 ({ \
400 int __ret = 0; \
401 if (cgroup_bpf_enabled(CGROUP_DEVICE)) \
402 __ret = __cgroup_bpf_check_dev_permission(atype, major, minor, \
403 access, \
404 CGROUP_DEVICE); \
405 \
406 __ret; \
407 })
408
409
410 #define BPF_CGROUP_RUN_PROG_SYSCTL(head, table, write, buf, count, pos) \
411 ({ \
412 int __ret = 0; \
413 if (cgroup_bpf_enabled(CGROUP_SYSCTL)) \
414 __ret = __cgroup_bpf_run_filter_sysctl(head, table, write, \
415 buf, count, pos, \
416 CGROUP_SYSCTL); \
417 __ret; \
418 })
419
420 #define BPF_CGROUP_RUN_PROG_SETSOCKOPT(sock, level, optname, optval, optlen, \
421 kernel_optval) \
422 ({ \
423 int __ret = 0; \
424 if (cgroup_bpf_enabled(CGROUP_SETSOCKOPT)) \
425 __ret = __cgroup_bpf_run_filter_setsockopt(sock, level, \
426 optname, optval, \
427 optlen, \
428 kernel_optval); \
429 __ret; \
430 })
431
432 #define BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN(optlen) \
433 ({ \
434 int __ret = 0; \
435 if (cgroup_bpf_enabled(CGROUP_GETSOCKOPT)) \
436 get_user(__ret, optlen); \
437 __ret; \
438 })
439
440 #define BPF_CGROUP_RUN_PROG_GETSOCKOPT(sock, level, optname, optval, optlen, \
441 max_optlen, retval) \
442 ({ \
443 int __ret = retval; \
444 if (cgroup_bpf_enabled(CGROUP_GETSOCKOPT)) \
445 if (!(sock)->sk_prot->bpf_bypass_getsockopt || \
446 !INDIRECT_CALL_INET_1((sock)->sk_prot->bpf_bypass_getsockopt, \
447 tcp_bpf_bypass_getsockopt, \
448 level, optname)) \
449 __ret = __cgroup_bpf_run_filter_getsockopt( \
450 sock, level, optname, optval, optlen, \
451 max_optlen, retval); \
452 __ret; \
453 })
454
455 #define BPF_CGROUP_RUN_PROG_GETSOCKOPT_KERN(sock, level, optname, optval, \
456 optlen, retval) \
457 ({ \
458 int __ret = retval; \
459 if (cgroup_bpf_enabled(CGROUP_GETSOCKOPT)) \
460 __ret = __cgroup_bpf_run_filter_getsockopt_kern( \
461 sock, level, optname, optval, optlen, retval); \
462 __ret; \
463 })
464
465 int cgroup_bpf_prog_attach(const union bpf_attr *attr,
466 enum bpf_prog_type ptype, struct bpf_prog *prog);
467 int cgroup_bpf_prog_detach(const union bpf_attr *attr,
468 enum bpf_prog_type ptype);
469 int cgroup_bpf_link_attach(const union bpf_attr *attr, struct bpf_prog *prog);
470 int cgroup_bpf_prog_query(const union bpf_attr *attr,
471 union bpf_attr __user *uattr);
472 #else
473
474 struct cgroup_bpf {};
cgroup_bpf_inherit(struct cgroup * cgrp)475 static inline int cgroup_bpf_inherit(struct cgroup *cgrp) { return 0; }
cgroup_bpf_offline(struct cgroup * cgrp)476 static inline void cgroup_bpf_offline(struct cgroup *cgrp) {}
477
cgroup_bpf_prog_attach(const union bpf_attr * attr,enum bpf_prog_type ptype,struct bpf_prog * prog)478 static inline int cgroup_bpf_prog_attach(const union bpf_attr *attr,
479 enum bpf_prog_type ptype,
480 struct bpf_prog *prog)
481 {
482 return -EINVAL;
483 }
484
cgroup_bpf_prog_detach(const union bpf_attr * attr,enum bpf_prog_type ptype)485 static inline int cgroup_bpf_prog_detach(const union bpf_attr *attr,
486 enum bpf_prog_type ptype)
487 {
488 return -EINVAL;
489 }
490
cgroup_bpf_link_attach(const union bpf_attr * attr,struct bpf_prog * prog)491 static inline int cgroup_bpf_link_attach(const union bpf_attr *attr,
492 struct bpf_prog *prog)
493 {
494 return -EINVAL;
495 }
496
cgroup_bpf_prog_query(const union bpf_attr * attr,union bpf_attr __user * uattr)497 static inline int cgroup_bpf_prog_query(const union bpf_attr *attr,
498 union bpf_attr __user *uattr)
499 {
500 return -EINVAL;
501 }
502
bpf_cgroup_storage_assign(struct bpf_prog_aux * aux,struct bpf_map * map)503 static inline int bpf_cgroup_storage_assign(struct bpf_prog_aux *aux,
504 struct bpf_map *map) { return 0; }
bpf_cgroup_storage_alloc(struct bpf_prog * prog,enum bpf_cgroup_storage_type stype)505 static inline struct bpf_cgroup_storage *bpf_cgroup_storage_alloc(
506 struct bpf_prog *prog, enum bpf_cgroup_storage_type stype) { return NULL; }
bpf_cgroup_storage_free(struct bpf_cgroup_storage * storage)507 static inline void bpf_cgroup_storage_free(
508 struct bpf_cgroup_storage *storage) {}
bpf_percpu_cgroup_storage_copy(struct bpf_map * map,void * key,void * value)509 static inline int bpf_percpu_cgroup_storage_copy(struct bpf_map *map, void *key,
510 void *value) {
511 return 0;
512 }
bpf_percpu_cgroup_storage_update(struct bpf_map * map,void * key,void * value,u64 flags)513 static inline int bpf_percpu_cgroup_storage_update(struct bpf_map *map,
514 void *key, void *value, u64 flags) {
515 return 0;
516 }
517
518 #define cgroup_bpf_enabled(atype) (0)
519 #define BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, atype, t_ctx) ({ 0; })
520 #define BPF_CGROUP_PRE_CONNECT_ENABLED(sk) (0)
521 #define BPF_CGROUP_RUN_PROG_INET_INGRESS(sk,skb) ({ 0; })
522 #define BPF_CGROUP_RUN_PROG_INET_EGRESS(sk,skb) ({ 0; })
523 #define BPF_CGROUP_RUN_PROG_INET_SOCK(sk) ({ 0; })
524 #define BPF_CGROUP_RUN_PROG_INET_SOCK_RELEASE(sk) ({ 0; })
525 #define BPF_CGROUP_RUN_PROG_INET_BIND_LOCK(sk, uaddr, atype, flags) ({ 0; })
526 #define BPF_CGROUP_RUN_PROG_INET4_POST_BIND(sk) ({ 0; })
527 #define BPF_CGROUP_RUN_PROG_INET6_POST_BIND(sk) ({ 0; })
528 #define BPF_CGROUP_RUN_PROG_INET4_CONNECT(sk, uaddr) ({ 0; })
529 #define BPF_CGROUP_RUN_PROG_INET4_CONNECT_LOCK(sk, uaddr) ({ 0; })
530 #define BPF_CGROUP_RUN_PROG_INET6_CONNECT(sk, uaddr) ({ 0; })
531 #define BPF_CGROUP_RUN_PROG_INET6_CONNECT_LOCK(sk, uaddr) ({ 0; })
532 #define BPF_CGROUP_RUN_PROG_UDP4_SENDMSG_LOCK(sk, uaddr, t_ctx) ({ 0; })
533 #define BPF_CGROUP_RUN_PROG_UDP6_SENDMSG_LOCK(sk, uaddr, t_ctx) ({ 0; })
534 #define BPF_CGROUP_RUN_PROG_UDP4_RECVMSG_LOCK(sk, uaddr) ({ 0; })
535 #define BPF_CGROUP_RUN_PROG_UDP6_RECVMSG_LOCK(sk, uaddr) ({ 0; })
536 #define BPF_CGROUP_RUN_PROG_SOCK_OPS(sock_ops) ({ 0; })
537 #define BPF_CGROUP_RUN_PROG_DEVICE_CGROUP(atype, major, minor, access) ({ 0; })
538 #define BPF_CGROUP_RUN_PROG_SYSCTL(head,table,write,buf,count,pos) ({ 0; })
539 #define BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN(optlen) ({ 0; })
540 #define BPF_CGROUP_RUN_PROG_GETSOCKOPT(sock, level, optname, optval, \
541 optlen, max_optlen, retval) ({ retval; })
542 #define BPF_CGROUP_RUN_PROG_GETSOCKOPT_KERN(sock, level, optname, optval, \
543 optlen, retval) ({ retval; })
544 #define BPF_CGROUP_RUN_PROG_SETSOCKOPT(sock, level, optname, optval, optlen, \
545 kernel_optval) ({ 0; })
546
547 #define for_each_cgroup_storage_type(stype) for (; false; )
548
549 #endif /* CONFIG_CGROUP_BPF */
550
551 #endif /* _BPF_CGROUP_H */
552
