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