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 };
115
116 int cgroup_bpf_inherit(struct cgroup *cgrp);
117 void cgroup_bpf_offline(struct cgroup *cgrp);
118
119 int __cgroup_bpf_run_filter_skb(struct sock *sk,
120 struct sk_buff *skb,
121 enum cgroup_bpf_attach_type atype);
122
123 int __cgroup_bpf_run_filter_sk(struct sock *sk,
124 enum cgroup_bpf_attach_type atype);
125
126 int __cgroup_bpf_run_filter_sock_addr(struct sock *sk,
127 struct sockaddr *uaddr,
128 int *uaddrlen,
129 enum cgroup_bpf_attach_type atype,
130 void *t_ctx,
131 u32 *flags);
132
133 int __cgroup_bpf_run_filter_sock_ops(struct sock *sk,
134 struct bpf_sock_ops_kern *sock_ops,
135 enum cgroup_bpf_attach_type atype);
136
137 int __cgroup_bpf_check_dev_permission(short dev_type, u32 major, u32 minor,
138 short access, enum cgroup_bpf_attach_type atype);
139
140 int __cgroup_bpf_run_filter_sysctl(struct ctl_table_header *head,
141 struct ctl_table *table, int write,
142 char **buf, size_t *pcount, loff_t *ppos,
143 enum cgroup_bpf_attach_type atype);
144
145 int __cgroup_bpf_run_filter_setsockopt(struct sock *sock, int *level,
146 int *optname, sockptr_t optval,
147 int *optlen, char **kernel_optval);
148
149 int __cgroup_bpf_run_filter_getsockopt(struct sock *sk, int level,
150 int optname, sockptr_t optval,
151 sockptr_t optlen, int max_optlen,
152 int retval);
153
154 int __cgroup_bpf_run_filter_getsockopt_kern(struct sock *sk, int level,
155 int optname, void *optval,
156 int *optlen, int retval);
157
cgroup_storage_type(struct bpf_map * map)158 static inline enum bpf_cgroup_storage_type cgroup_storage_type(
159 struct bpf_map *map)
160 {
161 if (map->map_type == BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE)
162 return BPF_CGROUP_STORAGE_PERCPU;
163
164 return BPF_CGROUP_STORAGE_SHARED;
165 }
166
167 struct bpf_cgroup_storage *
168 cgroup_storage_lookup(struct bpf_cgroup_storage_map *map,
169 void *key, bool locked);
170 struct bpf_cgroup_storage *bpf_cgroup_storage_alloc(struct bpf_prog *prog,
171 enum bpf_cgroup_storage_type stype);
172 void bpf_cgroup_storage_free(struct bpf_cgroup_storage *storage);
173 void bpf_cgroup_storage_link(struct bpf_cgroup_storage *storage,
174 struct cgroup *cgroup,
175 enum bpf_attach_type type);
176 void bpf_cgroup_storage_unlink(struct bpf_cgroup_storage *storage);
177 int bpf_cgroup_storage_assign(struct bpf_prog_aux *aux, struct bpf_map *map);
178
179 int bpf_percpu_cgroup_storage_copy(struct bpf_map *map, void *key, void *value);
180 int bpf_percpu_cgroup_storage_update(struct bpf_map *map, void *key,
181 void *value, u64 flags);
182
183 /* Opportunistic check to see whether we have any BPF program attached*/
cgroup_bpf_sock_enabled(struct sock * sk,enum cgroup_bpf_attach_type type)184 static inline bool cgroup_bpf_sock_enabled(struct sock *sk,
185 enum cgroup_bpf_attach_type type)
186 {
187 struct cgroup *cgrp = sock_cgroup_ptr(&sk->sk_cgrp_data);
188 struct bpf_prog_array *array;
189
190 array = rcu_access_pointer(cgrp->bpf.effective[type]);
191 return array != &bpf_empty_prog_array.hdr;
192 }
193
194 /* Wrappers for __cgroup_bpf_run_filter_skb() guarded by cgroup_bpf_enabled. */
195 #define BPF_CGROUP_RUN_PROG_INET_INGRESS(sk, skb) \
196 ({ \
197 int __ret = 0; \
198 if (cgroup_bpf_enabled(CGROUP_INET_INGRESS) && \
199 cgroup_bpf_sock_enabled(sk, CGROUP_INET_INGRESS)) \
200 __ret = __cgroup_bpf_run_filter_skb(sk, skb, \
201 CGROUP_INET_INGRESS); \
202 \
203 __ret; \
204 })
205
206 #define BPF_CGROUP_RUN_PROG_INET_EGRESS(sk, skb) \
207 ({ \
208 int __ret = 0; \
209 if (cgroup_bpf_enabled(CGROUP_INET_EGRESS) && sk) { \
210 typeof(sk) __sk = sk_to_full_sk(sk); \
211 if (sk_fullsock(__sk) && __sk == skb_to_full_sk(skb) && \
212 cgroup_bpf_sock_enabled(__sk, CGROUP_INET_EGRESS)) \
213 __ret = __cgroup_bpf_run_filter_skb(__sk, skb, \
214 CGROUP_INET_EGRESS); \
215 } \
216 __ret; \
217 })
218
219 #define BPF_CGROUP_RUN_SK_PROG(sk, atype) \
220 ({ \
221 int __ret = 0; \
222 if (cgroup_bpf_enabled(atype)) { \
223 __ret = __cgroup_bpf_run_filter_sk(sk, atype); \
224 } \
225 __ret; \
226 })
227
228 #define BPF_CGROUP_RUN_PROG_INET_SOCK(sk) \
229 BPF_CGROUP_RUN_SK_PROG(sk, CGROUP_INET_SOCK_CREATE)
230
231 #define BPF_CGROUP_RUN_PROG_INET_SOCK_RELEASE(sk) \
232 BPF_CGROUP_RUN_SK_PROG(sk, CGROUP_INET_SOCK_RELEASE)
233
234 #define BPF_CGROUP_RUN_PROG_INET4_POST_BIND(sk) \
235 BPF_CGROUP_RUN_SK_PROG(sk, CGROUP_INET4_POST_BIND)
236
237 #define BPF_CGROUP_RUN_PROG_INET6_POST_BIND(sk) \
238 BPF_CGROUP_RUN_SK_PROG(sk, CGROUP_INET6_POST_BIND)
239
240 #define BPF_CGROUP_RUN_SA_PROG(sk, uaddr, uaddrlen, atype) \
241 ({ \
242 int __ret = 0; \
243 if (cgroup_bpf_enabled(atype)) \
244 __ret = __cgroup_bpf_run_filter_sock_addr(sk, uaddr, uaddrlen, \
245 atype, NULL, NULL); \
246 __ret; \
247 })
248
249 #define BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, uaddrlen, atype, t_ctx) \
250 ({ \
251 int __ret = 0; \
252 if (cgroup_bpf_enabled(atype)) { \
253 lock_sock(sk); \
254 __ret = __cgroup_bpf_run_filter_sock_addr(sk, uaddr, uaddrlen, \
255 atype, t_ctx, NULL); \
256 release_sock(sk); \
257 } \
258 __ret; \
259 })
260
261 /* BPF_CGROUP_INET4_BIND and BPF_CGROUP_INET6_BIND can return extra flags
262 * via upper bits of return code. The only flag that is supported
263 * (at bit position 0) is to indicate CAP_NET_BIND_SERVICE capability check
264 * should be bypassed (BPF_RET_BIND_NO_CAP_NET_BIND_SERVICE).
265 */
266 #define BPF_CGROUP_RUN_PROG_INET_BIND_LOCK(sk, uaddr, uaddrlen, atype, bind_flags) \
267 ({ \
268 u32 __flags = 0; \
269 int __ret = 0; \
270 if (cgroup_bpf_enabled(atype)) { \
271 lock_sock(sk); \
272 __ret = __cgroup_bpf_run_filter_sock_addr(sk, uaddr, uaddrlen, \
273 atype, NULL, &__flags); \
274 release_sock(sk); \
275 if (__flags & BPF_RET_BIND_NO_CAP_NET_BIND_SERVICE) \
276 *bind_flags |= BIND_NO_CAP_NET_BIND_SERVICE; \
277 } \
278 __ret; \
279 })
280
281 #define BPF_CGROUP_PRE_CONNECT_ENABLED(sk) \
282 ((cgroup_bpf_enabled(CGROUP_INET4_CONNECT) || \
283 cgroup_bpf_enabled(CGROUP_INET6_CONNECT)) && \
284 (sk)->sk_prot->pre_connect)
285
286 #define BPF_CGROUP_RUN_PROG_INET4_CONNECT(sk, uaddr, uaddrlen) \
287 BPF_CGROUP_RUN_SA_PROG(sk, uaddr, uaddrlen, CGROUP_INET4_CONNECT)
288
289 #define BPF_CGROUP_RUN_PROG_INET6_CONNECT(sk, uaddr, uaddrlen) \
290 BPF_CGROUP_RUN_SA_PROG(sk, uaddr, uaddrlen, CGROUP_INET6_CONNECT)
291
292 #define BPF_CGROUP_RUN_PROG_INET4_CONNECT_LOCK(sk, uaddr, uaddrlen) \
293 BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, uaddrlen, CGROUP_INET4_CONNECT, NULL)
294
295 #define BPF_CGROUP_RUN_PROG_INET6_CONNECT_LOCK(sk, uaddr, uaddrlen) \
296 BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, uaddrlen, CGROUP_INET6_CONNECT, NULL)
297
298 #define BPF_CGROUP_RUN_PROG_UNIX_CONNECT_LOCK(sk, uaddr, uaddrlen) \
299 BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, uaddrlen, CGROUP_UNIX_CONNECT, NULL)
300
301 #define BPF_CGROUP_RUN_PROG_UDP4_SENDMSG_LOCK(sk, uaddr, uaddrlen, t_ctx) \
302 BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, uaddrlen, CGROUP_UDP4_SENDMSG, t_ctx)
303
304 #define BPF_CGROUP_RUN_PROG_UDP6_SENDMSG_LOCK(sk, uaddr, uaddrlen, t_ctx) \
305 BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, uaddrlen, CGROUP_UDP6_SENDMSG, t_ctx)
306
307 #define BPF_CGROUP_RUN_PROG_UNIX_SENDMSG_LOCK(sk, uaddr, uaddrlen, t_ctx) \
308 BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, uaddrlen, CGROUP_UNIX_SENDMSG, t_ctx)
309
310 #define BPF_CGROUP_RUN_PROG_UDP4_RECVMSG_LOCK(sk, uaddr, uaddrlen) \
311 BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, uaddrlen, CGROUP_UDP4_RECVMSG, NULL)
312
313 #define BPF_CGROUP_RUN_PROG_UDP6_RECVMSG_LOCK(sk, uaddr, uaddrlen) \
314 BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, uaddrlen, CGROUP_UDP6_RECVMSG, NULL)
315
316 #define BPF_CGROUP_RUN_PROG_UNIX_RECVMSG_LOCK(sk, uaddr, uaddrlen) \
317 BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, uaddrlen, CGROUP_UNIX_RECVMSG, NULL)
318
319 /* The SOCK_OPS"_SK" macro should be used when sock_ops->sk is not a
320 * fullsock and its parent fullsock cannot be traced by
321 * sk_to_full_sk().
322 *
323 * e.g. sock_ops->sk is a request_sock and it is under syncookie mode.
324 * Its listener-sk is not attached to the rsk_listener.
325 * In this case, the caller holds the listener-sk (unlocked),
326 * set its sock_ops->sk to req_sk, and call this SOCK_OPS"_SK" with
327 * the listener-sk such that the cgroup-bpf-progs of the
328 * listener-sk will be run.
329 *
330 * Regardless of syncookie mode or not,
331 * calling bpf_setsockopt on listener-sk will not make sense anyway,
332 * so passing 'sock_ops->sk == req_sk' to the bpf prog is appropriate here.
333 */
334 #define BPF_CGROUP_RUN_PROG_SOCK_OPS_SK(sock_ops, sk) \
335 ({ \
336 int __ret = 0; \
337 if (cgroup_bpf_enabled(CGROUP_SOCK_OPS)) \
338 __ret = __cgroup_bpf_run_filter_sock_ops(sk, \
339 sock_ops, \
340 CGROUP_SOCK_OPS); \
341 __ret; \
342 })
343
344 #define BPF_CGROUP_RUN_PROG_SOCK_OPS(sock_ops) \
345 ({ \
346 int __ret = 0; \
347 if (cgroup_bpf_enabled(CGROUP_SOCK_OPS) && (sock_ops)->sk) { \
348 typeof(sk) __sk = sk_to_full_sk((sock_ops)->sk); \
349 if (__sk && sk_fullsock(__sk)) \
350 __ret = __cgroup_bpf_run_filter_sock_ops(__sk, \
351 sock_ops, \
352 CGROUP_SOCK_OPS); \
353 } \
354 __ret; \
355 })
356
357 #define BPF_CGROUP_RUN_PROG_DEVICE_CGROUP(atype, major, minor, access) \
358 ({ \
359 int __ret = 0; \
360 if (cgroup_bpf_enabled(CGROUP_DEVICE)) \
361 __ret = __cgroup_bpf_check_dev_permission(atype, major, minor, \
362 access, \
363 CGROUP_DEVICE); \
364 \
365 __ret; \
366 })
367
368
369 #define BPF_CGROUP_RUN_PROG_SYSCTL(head, table, write, buf, count, pos) \
370 ({ \
371 int __ret = 0; \
372 if (cgroup_bpf_enabled(CGROUP_SYSCTL)) \
373 __ret = __cgroup_bpf_run_filter_sysctl(head, table, write, \
374 buf, count, pos, \
375 CGROUP_SYSCTL); \
376 __ret; \
377 })
378
379 #define BPF_CGROUP_RUN_PROG_SETSOCKOPT(sock, level, optname, optval, optlen, \
380 kernel_optval) \
381 ({ \
382 int __ret = 0; \
383 if (cgroup_bpf_enabled(CGROUP_SETSOCKOPT) && \
384 cgroup_bpf_sock_enabled(sock, CGROUP_SETSOCKOPT)) \
385 __ret = __cgroup_bpf_run_filter_setsockopt(sock, level, \
386 optname, optval, \
387 optlen, \
388 kernel_optval); \
389 __ret; \
390 })
391
392 #define BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN(optlen) \
393 ({ \
394 int __ret = 0; \
395 if (cgroup_bpf_enabled(CGROUP_GETSOCKOPT)) \
396 copy_from_sockptr(&__ret, optlen, sizeof(int)); \
397 __ret; \
398 })
399
400 #define BPF_CGROUP_RUN_PROG_GETSOCKOPT(sock, level, optname, optval, optlen, \
401 max_optlen, retval) \
402 ({ \
403 int __ret = retval; \
404 if (cgroup_bpf_enabled(CGROUP_GETSOCKOPT) && \
405 cgroup_bpf_sock_enabled(sock, CGROUP_GETSOCKOPT)) \
406 if (!(sock)->sk_prot->bpf_bypass_getsockopt || \
407 !INDIRECT_CALL_INET_1((sock)->sk_prot->bpf_bypass_getsockopt, \
408 tcp_bpf_bypass_getsockopt, \
409 level, optname)) \
410 __ret = __cgroup_bpf_run_filter_getsockopt( \
411 sock, level, optname, optval, optlen, \
412 max_optlen, retval); \
413 __ret; \
414 })
415
416 #define BPF_CGROUP_RUN_PROG_GETSOCKOPT_KERN(sock, level, optname, optval, \
417 optlen, retval) \
418 ({ \
419 int __ret = retval; \
420 if (cgroup_bpf_enabled(CGROUP_GETSOCKOPT)) \
421 __ret = __cgroup_bpf_run_filter_getsockopt_kern( \
422 sock, level, optname, optval, optlen, retval); \
423 __ret; \
424 })
425
426 int cgroup_bpf_prog_attach(const union bpf_attr *attr,
427 enum bpf_prog_type ptype, struct bpf_prog *prog);
428 int cgroup_bpf_prog_detach(const union bpf_attr *attr,
429 enum bpf_prog_type ptype);
430 int cgroup_bpf_link_attach(const union bpf_attr *attr, struct bpf_prog *prog);
431 int cgroup_bpf_prog_query(const union bpf_attr *attr,
432 union bpf_attr __user *uattr);
433
434 const struct bpf_func_proto *
435 cgroup_common_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog);
436 const struct bpf_func_proto *
437 cgroup_current_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog);
438 #else
439
cgroup_bpf_inherit(struct cgroup * cgrp)440 static inline int cgroup_bpf_inherit(struct cgroup *cgrp) { return 0; }
cgroup_bpf_offline(struct cgroup * cgrp)441 static inline void cgroup_bpf_offline(struct cgroup *cgrp) {}
442
cgroup_bpf_prog_attach(const union bpf_attr * attr,enum bpf_prog_type ptype,struct bpf_prog * prog)443 static inline int cgroup_bpf_prog_attach(const union bpf_attr *attr,
444 enum bpf_prog_type ptype,
445 struct bpf_prog *prog)
446 {
447 return -EINVAL;
448 }
449
cgroup_bpf_prog_detach(const union bpf_attr * attr,enum bpf_prog_type ptype)450 static inline int cgroup_bpf_prog_detach(const union bpf_attr *attr,
451 enum bpf_prog_type ptype)
452 {
453 return -EINVAL;
454 }
455
cgroup_bpf_link_attach(const union bpf_attr * attr,struct bpf_prog * prog)456 static inline int cgroup_bpf_link_attach(const union bpf_attr *attr,
457 struct bpf_prog *prog)
458 {
459 return -EINVAL;
460 }
461
cgroup_bpf_prog_query(const union bpf_attr * attr,union bpf_attr __user * uattr)462 static inline int cgroup_bpf_prog_query(const union bpf_attr *attr,
463 union bpf_attr __user *uattr)
464 {
465 return -EINVAL;
466 }
467
468 static inline const struct bpf_func_proto *
cgroup_common_func_proto(enum bpf_func_id func_id,const struct bpf_prog * prog)469 cgroup_common_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
470 {
471 return NULL;
472 }
473
474 static inline const struct bpf_func_proto *
cgroup_current_func_proto(enum bpf_func_id func_id,const struct bpf_prog * prog)475 cgroup_current_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
476 {
477 return NULL;
478 }
479
bpf_cgroup_storage_assign(struct bpf_prog_aux * aux,struct bpf_map * map)480 static inline int bpf_cgroup_storage_assign(struct bpf_prog_aux *aux,
481 struct bpf_map *map) { return 0; }
bpf_cgroup_storage_alloc(struct bpf_prog * prog,enum bpf_cgroup_storage_type stype)482 static inline struct bpf_cgroup_storage *bpf_cgroup_storage_alloc(
483 struct bpf_prog *prog, enum bpf_cgroup_storage_type stype) { return NULL; }
bpf_cgroup_storage_free(struct bpf_cgroup_storage * storage)484 static inline void bpf_cgroup_storage_free(
485 struct bpf_cgroup_storage *storage) {}
bpf_percpu_cgroup_storage_copy(struct bpf_map * map,void * key,void * value)486 static inline int bpf_percpu_cgroup_storage_copy(struct bpf_map *map, void *key,
487 void *value) {
488 return 0;
489 }
bpf_percpu_cgroup_storage_update(struct bpf_map * map,void * key,void * value,u64 flags)490 static inline int bpf_percpu_cgroup_storage_update(struct bpf_map *map,
491 void *key, void *value, u64 flags) {
492 return 0;
493 }
494
495 #define cgroup_bpf_enabled(atype) (0)
496 #define BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, uaddrlen, atype, t_ctx) ({ 0; })
497 #define BPF_CGROUP_RUN_SA_PROG(sk, uaddr, uaddrlen, atype) ({ 0; })
498 #define BPF_CGROUP_PRE_CONNECT_ENABLED(sk) (0)
499 #define BPF_CGROUP_RUN_PROG_INET_INGRESS(sk,skb) ({ 0; })
500 #define BPF_CGROUP_RUN_PROG_INET_EGRESS(sk,skb) ({ 0; })
501 #define BPF_CGROUP_RUN_PROG_INET_SOCK(sk) ({ 0; })
502 #define BPF_CGROUP_RUN_PROG_INET_SOCK_RELEASE(sk) ({ 0; })
503 #define BPF_CGROUP_RUN_PROG_INET_BIND_LOCK(sk, uaddr, uaddrlen, atype, flags) ({ 0; })
504 #define BPF_CGROUP_RUN_PROG_INET4_POST_BIND(sk) ({ 0; })
505 #define BPF_CGROUP_RUN_PROG_INET6_POST_BIND(sk) ({ 0; })
506 #define BPF_CGROUP_RUN_PROG_INET4_CONNECT(sk, uaddr, uaddrlen) ({ 0; })
507 #define BPF_CGROUP_RUN_PROG_INET4_CONNECT_LOCK(sk, uaddr, uaddrlen) ({ 0; })
508 #define BPF_CGROUP_RUN_PROG_INET6_CONNECT(sk, uaddr, uaddrlen) ({ 0; })
509 #define BPF_CGROUP_RUN_PROG_INET6_CONNECT_LOCK(sk, uaddr, uaddrlen) ({ 0; })
510 #define BPF_CGROUP_RUN_PROG_UNIX_CONNECT_LOCK(sk, uaddr, uaddrlen) ({ 0; })
511 #define BPF_CGROUP_RUN_PROG_UDP4_SENDMSG_LOCK(sk, uaddr, uaddrlen, t_ctx) ({ 0; })
512 #define BPF_CGROUP_RUN_PROG_UDP6_SENDMSG_LOCK(sk, uaddr, uaddrlen, t_ctx) ({ 0; })
513 #define BPF_CGROUP_RUN_PROG_UNIX_SENDMSG_LOCK(sk, uaddr, uaddrlen, t_ctx) ({ 0; })
514 #define BPF_CGROUP_RUN_PROG_UDP4_RECVMSG_LOCK(sk, uaddr, uaddrlen) ({ 0; })
515 #define BPF_CGROUP_RUN_PROG_UDP6_RECVMSG_LOCK(sk, uaddr, uaddrlen) ({ 0; })
516 #define BPF_CGROUP_RUN_PROG_UNIX_RECVMSG_LOCK(sk, uaddr, uaddrlen) ({ 0; })
517 #define BPF_CGROUP_RUN_PROG_SOCK_OPS(sock_ops) ({ 0; })
518 #define BPF_CGROUP_RUN_PROG_DEVICE_CGROUP(atype, major, minor, access) ({ 0; })
519 #define BPF_CGROUP_RUN_PROG_SYSCTL(head,table,write,buf,count,pos) ({ 0; })
520 #define BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN(optlen) ({ 0; })
521 #define BPF_CGROUP_RUN_PROG_GETSOCKOPT(sock, level, optname, optval, \
522 optlen, max_optlen, retval) ({ retval; })
523 #define BPF_CGROUP_RUN_PROG_GETSOCKOPT_KERN(sock, level, optname, optval, \
524 optlen, retval) ({ retval; })
525 #define BPF_CGROUP_RUN_PROG_SETSOCKOPT(sock, level, optname, optval, optlen, \
526 kernel_optval) ({ 0; })
527
528 #define for_each_cgroup_storage_type(stype) for (; false; )
529
530 #endif /* CONFIG_CGROUP_BPF */
531
532 #endif /* _BPF_CGROUP_H */
533