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