include/linux/bpf-cgroup.h

   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
  24 #ifdef CONFIG_CGROUP_BPF
  25
  26 extern struct static_key_false cgroup_bpf_enabled_key[MAX_BPF_ATTACH_TYPE];
  27 #define cgroup_bpf_enabled(type) static_branch_unlikely(&cgroup_bpf_enabled_key[type])
  28
  29 DECLARE_PER_CPU(struct bpf_cgroup_storage*,
  30                 bpf_cgroup_storage[MAX_BPF_CGROUP_STORAGE_TYPE]);
  31
  32 #define for_each_cgroup_storage_type(stype) \
  33         for (stype = 0; stype < MAX_BPF_CGROUP_STORAGE_TYPE; stype++)
  34
  35 struct bpf_cgroup_storage_map;
  36
  37 struct bpf_storage_buffer {
  38         struct rcu_head rcu;
  39         char data[];
  40 };
  41
  42 struct bpf_cgroup_storage {
  43         union {
  44                 struct bpf_storage_buffer *buf;
  45                 void __percpu *percpu_buf;
  46         };
  47         struct bpf_cgroup_storage_map *map;
  48         struct bpf_cgroup_storage_key key;
  49         struct list_head list_map;
  50         struct list_head list_cg;
  51         struct rb_node node;
  52         struct rcu_head rcu;
  53 };
  54
  55 struct bpf_cgroup_link {
  56         struct bpf_link link;
  57         struct cgroup *cgroup;
  58         enum bpf_attach_type type;
  59 };
  60
  61 struct bpf_prog_list {
  62         struct list_head node;
  63         struct bpf_prog *prog;
  64         struct bpf_cgroup_link *link;
  65         struct bpf_cgroup_storage *storage[MAX_BPF_CGROUP_STORAGE_TYPE];
  66 };
  67
  68 struct bpf_prog_array;
  69
  70 struct cgroup_bpf {
  71         /* array of effective progs in this cgroup */
  72         struct bpf_prog_array __rcu *effective[MAX_BPF_ATTACH_TYPE];
  73
  74         /* attached progs to this cgroup and attach flags
  75          * when flags == 0 or BPF_F_ALLOW_OVERRIDE the progs list will
  76          * have either zero or one element
  77          * when BPF_F_ALLOW_MULTI the list can have up to BPF_CGROUP_MAX_PROGS
  78          */
  79         struct list_head progs[MAX_BPF_ATTACH_TYPE];
  80         u32 flags[MAX_BPF_ATTACH_TYPE];
  81
  82         /* list of cgroup shared storages */
  83         struct list_head storages;
  84
  85         /* temp storage for effective prog array used by prog_attach/detach */
  86         struct bpf_prog_array *inactive;
  87
  88         /* reference counter used to detach bpf programs after cgroup removal */
  89         struct percpu_ref refcnt;
  90
  91         /* cgroup_bpf is released using a work queue */
  92         struct work_struct release_work;
  93 };
  94
  95 int cgroup_bpf_inherit(struct cgroup *cgrp);
  96 void cgroup_bpf_offline(struct cgroup *cgrp);
  97
  98 int __cgroup_bpf_attach(struct cgroup *cgrp,
  99                         struct bpf_prog *prog, struct bpf_prog *replace_prog,
 100                         struct bpf_cgroup_link *link,
 101                         enum bpf_attach_type type, u32 flags);
 102 int __cgroup_bpf_detach(struct cgroup *cgrp, struct bpf_prog *prog,
 103                         struct bpf_cgroup_link *link,
 104                         enum bpf_attach_type type);
 105 int __cgroup_bpf_query(struct cgroup *cgrp, const union bpf_attr *attr,
 106                        union bpf_attr __user *uattr);
 107
 108 /* Wrapper for __cgroup_bpf_*() protected by cgroup_mutex */
 109 int cgroup_bpf_attach(struct cgroup *cgrp,
 110                       struct bpf_prog *prog, struct bpf_prog *replace_prog,
 111                       struct bpf_cgroup_link *link, enum bpf_attach_type type,
 112                       u32 flags);
 113 int cgroup_bpf_detach(struct cgroup *cgrp, struct bpf_prog *prog,
 114                       enum bpf_attach_type type);
 115 int cgroup_bpf_query(struct cgroup *cgrp, const union bpf_attr *attr,
 116                      union bpf_attr __user *uattr);
 117
 118 int __cgroup_bpf_run_filter_skb(struct sock *sk,
 119                                 struct sk_buff *skb,
 120                                 enum bpf_attach_type type);
 121
 122 int __cgroup_bpf_run_filter_sk(struct sock *sk,
 123                                enum bpf_attach_type type);
 124
 125 int __cgroup_bpf_run_filter_sock_addr(struct sock *sk,
 126                                       struct sockaddr *uaddr,
 127                                       enum bpf_attach_type type,
 128                                       void *t_ctx,
 129                                       u32 *flags);
 130
 131 int __cgroup_bpf_run_filter_sock_ops(struct sock *sk,
 132                                      struct bpf_sock_ops_kern *sock_ops,
 133                                      enum bpf_attach_type type);
 134
 135 int __cgroup_bpf_check_dev_permission(short dev_type, u32 major, u32 minor,
 136                                       short access, enum bpf_attach_type type);
 137
 138 int __cgroup_bpf_run_filter_sysctl(struct ctl_table_header *head,
 139                                    struct ctl_table *table, int write,
 140                                    char **buf, size_t *pcount, loff_t *ppos,
 141                                    enum bpf_attach_type type);
 142
 143 int __cgroup_bpf_run_filter_setsockopt(struct sock *sock, int *level,
 144                                        int *optname, char __user *optval,
 145                                        int *optlen, char **kernel_optval);
 146 int __cgroup_bpf_run_filter_getsockopt(struct sock *sk, int level,
 147                                        int optname, char __user *optval,
 148                                        int __user *optlen, int max_optlen,
 149                                        int retval);
 150
 151 int __cgroup_bpf_run_filter_getsockopt_kern(struct sock *sk, int level,
 152                                             int optname, void *optval,
 153                                             int *optlen, int retval);
 154
 155 static inline enum bpf_cgroup_storage_type cgroup_storage_type(
 156         struct bpf_map *map)
 157 {
 158         if (map->map_type == BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE)
 159                 return BPF_CGROUP_STORAGE_PERCPU;
 160
 161         return BPF_CGROUP_STORAGE_SHARED;
 162 }
 163
 164 static inline void bpf_cgroup_storage_set(struct bpf_cgroup_storage
 165                                           *storage[MAX_BPF_CGROUP_STORAGE_TYPE])
 166 {
 167         enum bpf_cgroup_storage_type stype;
 168
 169         for_each_cgroup_storage_type(stype)
 170                 this_cpu_write(bpf_cgroup_storage[stype], storage[stype]);
 171 }
 172
 173 struct bpf_cgroup_storage *
 174 cgroup_storage_lookup(struct bpf_cgroup_storage_map *map,
 175                       void *key, bool locked);
 176 struct bpf_cgroup_storage *bpf_cgroup_storage_alloc(struct bpf_prog *prog,
 177                                         enum bpf_cgroup_storage_type stype);
 178 void bpf_cgroup_storage_free(struct bpf_cgroup_storage *storage);
 179 void bpf_cgroup_storage_link(struct bpf_cgroup_storage *storage,
 180                              struct cgroup *cgroup,
 181                              enum bpf_attach_type type);
 182 void bpf_cgroup_storage_unlink(struct bpf_cgroup_storage *storage);
 183 int bpf_cgroup_storage_assign(struct bpf_prog_aux *aux, struct bpf_map *map);
 184
 185 int bpf_percpu_cgroup_storage_copy(struct bpf_map *map, void *key, void *value);
 186 int bpf_percpu_cgroup_storage_update(struct bpf_map *map, void *key,
 187                                      void *value, u64 flags);
 188
 189 /* Wrappers for __cgroup_bpf_run_filter_skb() guarded by cgroup_bpf_enabled. */
 190 #define BPF_CGROUP_RUN_PROG_INET_INGRESS(sk, skb)                             \
 191 ({                                                                            \
 192         int __ret = 0;                                                        \
 193         if (cgroup_bpf_enabled(BPF_CGROUP_INET_INGRESS))                      \
 194                 __ret = __cgroup_bpf_run_filter_skb(sk, skb,                  \
 195                                                     BPF_CGROUP_INET_INGRESS); \
 196                                                                               \
 197         __ret;                                                                \
 198 })
 199
 200 #define BPF_CGROUP_RUN_PROG_INET_EGRESS(sk, skb)                               \
 201 ({                                                                             \
 202         int __ret = 0;                                                         \
 203         if (cgroup_bpf_enabled(BPF_CGROUP_INET_EGRESS) && sk && sk == skb->sk) { \
 204                 typeof(sk) __sk = sk_to_full_sk(sk);                           \
 205                 if (sk_fullsock(__sk))                                         \
 206                         __ret = __cgroup_bpf_run_filter_skb(__sk, skb,         \
 207                                                       BPF_CGROUP_INET_EGRESS); \
 208         }                                                                      \
 209         __ret;                                                                 \
 210 })
 211
 212 #define BPF_CGROUP_RUN_SK_PROG(sk, type)                                       \
 213 ({                                                                             \
 214         int __ret = 0;                                                         \
 215         if (cgroup_bpf_enabled(type)) {                                        \
 216                 __ret = __cgroup_bpf_run_filter_sk(sk, type);                  \
 217         }                                                                      \
 218         __ret;                                                                 \
 219 })
 220
 221 #define BPF_CGROUP_RUN_PROG_INET_SOCK(sk)                                      \
 222         BPF_CGROUP_RUN_SK_PROG(sk, BPF_CGROUP_INET_SOCK_CREATE)
 223
 224 #define BPF_CGROUP_RUN_PROG_INET_SOCK_RELEASE(sk)                              \
 225         BPF_CGROUP_RUN_SK_PROG(sk, BPF_CGROUP_INET_SOCK_RELEASE)
 226
 227 #define BPF_CGROUP_RUN_PROG_INET4_POST_BIND(sk)                                \
 228         BPF_CGROUP_RUN_SK_PROG(sk, BPF_CGROUP_INET4_POST_BIND)
 229
 230 #define BPF_CGROUP_RUN_PROG_INET6_POST_BIND(sk)                                \
 231         BPF_CGROUP_RUN_SK_PROG(sk, BPF_CGROUP_INET6_POST_BIND)
 232
 233 #define BPF_CGROUP_RUN_SA_PROG(sk, uaddr, type)                                \
 234 ({                                                                             \
 235         u32 __unused_flags;                                                    \
 236         int __ret = 0;                                                         \
 237         if (cgroup_bpf_enabled(type))                                          \
 238                 __ret = __cgroup_bpf_run_filter_sock_addr(sk, uaddr, type,     \
 239                                                           NULL,                \
 240                                                           &__unused_flags);    \
 241         __ret;                                                                 \
 242 })
 243
 244 #define BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, type, t_ctx)                    \
 245 ({                                                                             \
 246         u32 __unused_flags;                                                    \
 247         int __ret = 0;                                                         \
 248         if (cgroup_bpf_enabled(type))   {                                      \
 249                 lock_sock(sk);                                                 \
 250                 __ret = __cgroup_bpf_run_filter_sock_addr(sk, uaddr, type,     \
 251                                                           t_ctx,               \
 252                                                           &__unused_flags);    \
 253                 release_sock(sk);                                              \
 254         }                                                                      \
 255         __ret;                                                                 \
 256 })
 257
 258 /* BPF_CGROUP_INET4_BIND and BPF_CGROUP_INET6_BIND can return extra flags
 259  * via upper bits of return code. The only flag that is supported
 260  * (at bit position 0) is to indicate CAP_NET_BIND_SERVICE capability check
 261  * should be bypassed (BPF_RET_BIND_NO_CAP_NET_BIND_SERVICE).
 262  */
 263 #define BPF_CGROUP_RUN_PROG_INET_BIND_LOCK(sk, uaddr, type, bind_flags)        \
 264 ({                                                                             \
 265         u32 __flags = 0;                                                       \
 266         int __ret = 0;                                                         \
 267         if (cgroup_bpf_enabled(type))   {                                      \
 268                 lock_sock(sk);                                                 \
 269                 __ret = __cgroup_bpf_run_filter_sock_addr(sk, uaddr, type,     \
 270                                                           NULL, &__flags);     \
 271                 release_sock(sk);                                              \
 272                 if (__flags & BPF_RET_BIND_NO_CAP_NET_BIND_SERVICE)            \
 273                         *bind_flags |= BIND_NO_CAP_NET_BIND_SERVICE;           \
 274         }                                                                      \
 275         __ret;                                                                 \
 276 })
 277
 278 #define BPF_CGROUP_PRE_CONNECT_ENABLED(sk)                                     \
 279         ((cgroup_bpf_enabled(BPF_CGROUP_INET4_CONNECT) ||                      \
 280           cgroup_bpf_enabled(BPF_CGROUP_INET6_CONNECT)) &&                     \
 281          (sk)->sk_prot->pre_connect)
 282
 283 #define BPF_CGROUP_RUN_PROG_INET4_CONNECT(sk, uaddr)                           \
 284         BPF_CGROUP_RUN_SA_PROG(sk, uaddr, BPF_CGROUP_INET4_CONNECT)
 285
 286 #define BPF_CGROUP_RUN_PROG_INET6_CONNECT(sk, uaddr)                           \
 287         BPF_CGROUP_RUN_SA_PROG(sk, uaddr, BPF_CGROUP_INET6_CONNECT)
 288
 289 #define BPF_CGROUP_RUN_PROG_INET4_CONNECT_LOCK(sk, uaddr)                      \
 290         BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, BPF_CGROUP_INET4_CONNECT, NULL)
 291
 292 #define BPF_CGROUP_RUN_PROG_INET6_CONNECT_LOCK(sk, uaddr)                      \
 293         BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, BPF_CGROUP_INET6_CONNECT, NULL)
 294
 295 #define BPF_CGROUP_RUN_PROG_UDP4_SENDMSG_LOCK(sk, uaddr, t_ctx)                \
 296         BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, BPF_CGROUP_UDP4_SENDMSG, t_ctx)
 297
 298 #define BPF_CGROUP_RUN_PROG_UDP6_SENDMSG_LOCK(sk, uaddr, t_ctx)                \
 299         BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, BPF_CGROUP_UDP6_SENDMSG, t_ctx)
 300
 301 #define BPF_CGROUP_RUN_PROG_UDP4_RECVMSG_LOCK(sk, uaddr)                        \
 302         BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, BPF_CGROUP_UDP4_RECVMSG, NULL)
 303
 304 #define BPF_CGROUP_RUN_PROG_UDP6_RECVMSG_LOCK(sk, uaddr)                        \
 305         BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, BPF_CGROUP_UDP6_RECVMSG, NULL)
 306
 307 /* The SOCK_OPS"_SK" macro should be used when sock_ops->sk is not a
 308  * fullsock and its parent fullsock cannot be traced by
 309  * sk_to_full_sk().
 310  *
 311  * e.g. sock_ops->sk is a request_sock and it is under syncookie mode.
 312  * Its listener-sk is not attached to the rsk_listener.
 313  * In this case, the caller holds the listener-sk (unlocked),
 314  * set its sock_ops->sk to req_sk, and call this SOCK_OPS"_SK" with
 315  * the listener-sk such that the cgroup-bpf-progs of the
 316  * listener-sk will be run.
 317  *
 318  * Regardless of syncookie mode or not,
 319  * calling bpf_setsockopt on listener-sk will not make sense anyway,
 320  * so passing 'sock_ops->sk == req_sk' to the bpf prog is appropriate here.
 321  */
 322 #define BPF_CGROUP_RUN_PROG_SOCK_OPS_SK(sock_ops, sk)                   \
 323 ({                                                                      \
 324         int __ret = 0;                                                  \
 325         if (cgroup_bpf_enabled(BPF_CGROUP_SOCK_OPS))                    \
 326                 __ret = __cgroup_bpf_run_filter_sock_ops(sk,            \
 327                                                          sock_ops,      \
 328                                                          BPF_CGROUP_SOCK_OPS); \
 329         __ret;                                                          \
 330 })
 331
 332 #define BPF_CGROUP_RUN_PROG_SOCK_OPS(sock_ops)                                 \
 333 ({                                                                             \
 334         int __ret = 0;                                                         \
 335         if (cgroup_bpf_enabled(BPF_CGROUP_SOCK_OPS) && (sock_ops)->sk) {       \
 336                 typeof(sk) __sk = sk_to_full_sk((sock_ops)->sk);               \
 337                 if (__sk && sk_fullsock(__sk))                                 \
 338                         __ret = __cgroup_bpf_run_filter_sock_ops(__sk,         \
 339                                                                  sock_ops,     \
 340                                                          BPF_CGROUP_SOCK_OPS); \
 341         }                                                                      \
 342         __ret;                                                                 \
 343 })
 344
 345 #define BPF_CGROUP_RUN_PROG_DEVICE_CGROUP(type, major, minor, access)         \
 346 ({                                                                            \
 347         int __ret = 0;                                                        \
 348         if (cgroup_bpf_enabled(BPF_CGROUP_DEVICE))                            \
 349                 __ret = __cgroup_bpf_check_dev_permission(type, major, minor, \
 350                                                           access,             \
 351                                                           BPF_CGROUP_DEVICE); \
 352                                                                               \
 353         __ret;                                                                \
 354 })
 355
 356
 357 #define BPF_CGROUP_RUN_PROG_SYSCTL(head, table, write, buf, count, pos)  \
 358 ({                                                                             \
 359         int __ret = 0;                                                         \
 360         if (cgroup_bpf_enabled(BPF_CGROUP_SYSCTL))                             \
 361                 __ret = __cgroup_bpf_run_filter_sysctl(head, table, write,     \
 362                                                        buf, count, pos,        \
 363                                                        BPF_CGROUP_SYSCTL);     \
 364         __ret;                                                                 \
 365 })
 366
 367 #define BPF_CGROUP_RUN_PROG_SETSOCKOPT(sock, level, optname, optval, optlen,   \
 368                                        kernel_optval)                          \
 369 ({                                                                             \
 370         int __ret = 0;                                                         \
 371         if (cgroup_bpf_enabled(BPF_CGROUP_SETSOCKOPT))                         \
 372                 __ret = __cgroup_bpf_run_filter_setsockopt(sock, level,        \
 373                                                            optname, optval,    \
 374                                                            optlen,             \
 375                                                            kernel_optval);     \
 376         __ret;                                                                 \
 377 })
 378
 379 #define BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN(optlen)                               \
 380 ({                                                                             \
 381         int __ret = 0;                                                         \
 382         if (cgroup_bpf_enabled(BPF_CGROUP_GETSOCKOPT))                         \
 383                 get_user(__ret, optlen);                                       \
 384         __ret;                                                                 \
 385 })
 386
 387 #define BPF_CGROUP_RUN_PROG_GETSOCKOPT(sock, level, optname, optval, optlen,   \
 388                                        max_optlen, retval)                     \
 389 ({                                                                             \
 390         int __ret = retval;                                                    \
 391         if (cgroup_bpf_enabled(BPF_CGROUP_GETSOCKOPT))                         \
 392                 if (!(sock)->sk_prot->bpf_bypass_getsockopt ||                 \
 393                     !INDIRECT_CALL_INET_1((sock)->sk_prot->bpf_bypass_getsockopt, \
 394                                         tcp_bpf_bypass_getsockopt,             \
 395                                         level, optname))                       \
 396                         __ret = __cgroup_bpf_run_filter_getsockopt(            \
 397                                 sock, level, optname, optval, optlen,          \
 398                                 max_optlen, retval);                           \
 399         __ret;                                                                 \
 400 })
 401
 402 #define BPF_CGROUP_RUN_PROG_GETSOCKOPT_KERN(sock, level, optname, optval,      \
 403                                             optlen, retval)                    \
 404 ({                                                                             \
 405         int __ret = retval;                                                    \
 406         if (cgroup_bpf_enabled(BPF_CGROUP_GETSOCKOPT))                         \
 407                 __ret = __cgroup_bpf_run_filter_getsockopt_kern(               \
 408                         sock, level, optname, optval, optlen, retval);         \
 409         __ret;                                                                 \
 410 })
 411
 412 int cgroup_bpf_prog_attach(const union bpf_attr *attr,
 413                            enum bpf_prog_type ptype, struct bpf_prog *prog);
 414 int cgroup_bpf_prog_detach(const union bpf_attr *attr,
 415                            enum bpf_prog_type ptype);
 416 int cgroup_bpf_link_attach(const union bpf_attr *attr, struct bpf_prog *prog);
 417 int cgroup_bpf_prog_query(const union bpf_attr *attr,
 418                           union bpf_attr __user *uattr);
 419 #else
 420
 421 struct bpf_prog;
 422 struct cgroup_bpf {};
 423 static inline int cgroup_bpf_inherit(struct cgroup *cgrp) { return 0; }
 424 static inline void cgroup_bpf_offline(struct cgroup *cgrp) {}
 425
 426 static inline int cgroup_bpf_prog_attach(const union bpf_attr *attr,
 427                                          enum bpf_prog_type ptype,
 428                                          struct bpf_prog *prog)
 429 {
 430         return -EINVAL;
 431 }
 432
 433 static inline int cgroup_bpf_prog_detach(const union bpf_attr *attr,
 434                                          enum bpf_prog_type ptype)
 435 {
 436         return -EINVAL;
 437 }
 438
 439 static inline int cgroup_bpf_link_attach(const union bpf_attr *attr,
 440                                          struct bpf_prog *prog)
 441 {
 442         return -EINVAL;
 443 }
 444
 445 static inline int cgroup_bpf_prog_query(const union bpf_attr *attr,
 446                                         union bpf_attr __user *uattr)
 447 {
 448         return -EINVAL;
 449 }
 450
 451 static inline void bpf_cgroup_storage_set(
 452         struct bpf_cgroup_storage *storage[MAX_BPF_CGROUP_STORAGE_TYPE]) {}
 453 static inline int bpf_cgroup_storage_assign(struct bpf_prog_aux *aux,
 454                                             struct bpf_map *map) { return 0; }
 455 static inline struct bpf_cgroup_storage *bpf_cgroup_storage_alloc(
 456         struct bpf_prog *prog, enum bpf_cgroup_storage_type stype) { return NULL; }
 457 static inline void bpf_cgroup_storage_free(
 458         struct bpf_cgroup_storage *storage) {}
 459 static inline int bpf_percpu_cgroup_storage_copy(struct bpf_map *map, void *key,
 460                                                  void *value) {
 461         return 0;
 462 }
 463 static inline int bpf_percpu_cgroup_storage_update(struct bpf_map *map,
 464                                         void *key, void *value, u64 flags) {
 465         return 0;
 466 }
 467
 468 #define cgroup_bpf_enabled(type) (0)
 469 #define BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, type, t_ctx) ({ 0; })
 470 #define BPF_CGROUP_PRE_CONNECT_ENABLED(sk) (0)
 471 #define BPF_CGROUP_RUN_PROG_INET_INGRESS(sk,skb) ({ 0; })
 472 #define BPF_CGROUP_RUN_PROG_INET_EGRESS(sk,skb) ({ 0; })
 473 #define BPF_CGROUP_RUN_PROG_INET_SOCK(sk) ({ 0; })
 474 #define BPF_CGROUP_RUN_PROG_INET_SOCK_RELEASE(sk) ({ 0; })
 475 #define BPF_CGROUP_RUN_PROG_INET_BIND_LOCK(sk, uaddr, type, flags) ({ 0; })
 476 #define BPF_CGROUP_RUN_PROG_INET4_POST_BIND(sk) ({ 0; })
 477 #define BPF_CGROUP_RUN_PROG_INET6_POST_BIND(sk) ({ 0; })
 478 #define BPF_CGROUP_RUN_PROG_INET4_CONNECT(sk, uaddr) ({ 0; })
 479 #define BPF_CGROUP_RUN_PROG_INET4_CONNECT_LOCK(sk, uaddr) ({ 0; })
 480 #define BPF_CGROUP_RUN_PROG_INET6_CONNECT(sk, uaddr) ({ 0; })
 481 #define BPF_CGROUP_RUN_PROG_INET6_CONNECT_LOCK(sk, uaddr) ({ 0; })
 482 #define BPF_CGROUP_RUN_PROG_UDP4_SENDMSG_LOCK(sk, uaddr, t_ctx) ({ 0; })
 483 #define BPF_CGROUP_RUN_PROG_UDP6_SENDMSG_LOCK(sk, uaddr, t_ctx) ({ 0; })
 484 #define BPF_CGROUP_RUN_PROG_UDP4_RECVMSG_LOCK(sk, uaddr) ({ 0; })
 485 #define BPF_CGROUP_RUN_PROG_UDP6_RECVMSG_LOCK(sk, uaddr) ({ 0; })
 486 #define BPF_CGROUP_RUN_PROG_SOCK_OPS(sock_ops) ({ 0; })
 487 #define BPF_CGROUP_RUN_PROG_DEVICE_CGROUP(type,major,minor,access) ({ 0; })
 488 #define BPF_CGROUP_RUN_PROG_SYSCTL(head,table,write,buf,count,pos) ({ 0; })
 489 #define BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN(optlen) ({ 0; })
 490 #define BPF_CGROUP_RUN_PROG_GETSOCKOPT(sock, level, optname, optval, \
 491                                        optlen, max_optlen, retval) ({ retval; })
 492 #define BPF_CGROUP_RUN_PROG_GETSOCKOPT_KERN(sock, level, optname, optval, \
 493                                             optlen, retval) ({ retval; })
 494 #define BPF_CGROUP_RUN_PROG_SETSOCKOPT(sock, level, optname, optval, optlen, \
 495                                        kernel_optval) ({ 0; })
 496
 497 #define for_each_cgroup_storage_type(stype) for (; false; )
 498
 499 #endif /* CONFIG_CGROUP_BPF */
 500
 501 #endif /* _BPF_CGROUP_H */