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 <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
  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_INET4_POST_BIND);
  52         CGROUP_ATYPE(CGROUP_INET6_POST_BIND);
  53         CGROUP_ATYPE(CGROUP_UDP4_SENDMSG);
  54         CGROUP_ATYPE(CGROUP_UDP6_SENDMSG);
  55         CGROUP_ATYPE(CGROUP_SYSCTL);
  56         CGROUP_ATYPE(CGROUP_UDP4_RECVMSG);
  57         CGROUP_ATYPE(CGROUP_UDP6_RECVMSG);
  58         CGROUP_ATYPE(CGROUP_GETSOCKOPT);
  59         CGROUP_ATYPE(CGROUP_SETSOCKOPT);
  60         CGROUP_ATYPE(CGROUP_INET4_GETPEERNAME);
  61         CGROUP_ATYPE(CGROUP_INET6_GETPEERNAME);
  62         CGROUP_ATYPE(CGROUP_INET4_GETSOCKNAME);
  63         CGROUP_ATYPE(CGROUP_INET6_GETSOCKNAME);
  64         CGROUP_ATYPE(CGROUP_INET_SOCK_RELEASE);
  65         default:
  66                 return CGROUP_BPF_ATTACH_TYPE_INVALID;
  67         }
  68 }
  69
  70 #undef CGROUP_ATYPE
  71
  72 extern struct static_key_false cgroup_bpf_enabled_key[MAX_CGROUP_BPF_ATTACH_TYPE];
  73 #define cgroup_bpf_enabled(atype) static_branch_unlikely(&cgroup_bpf_enabled_key[atype])
  74
  75 #define for_each_cgroup_storage_type(stype) \
  76         for (stype = 0; stype < MAX_BPF_CGROUP_STORAGE_TYPE; stype++)
  77
  78 struct bpf_cgroup_storage_map;
  79
  80 struct bpf_storage_buffer {
  81         struct rcu_head rcu;
  82         char data[];
  83 };
  84
  85 struct bpf_cgroup_storage {
  86         union {
  87                 struct bpf_storage_buffer *buf;
  88                 void __percpu *percpu_buf;
  89         };
  90         struct bpf_cgroup_storage_map *map;
  91         struct bpf_cgroup_storage_key key;
  92         struct list_head list_map;
  93         struct list_head list_cg;
  94         struct rb_node node;
  95         struct rcu_head rcu;
  96 };
  97
  98 struct bpf_cgroup_link {
  99         struct bpf_link link;
 100         struct cgroup *cgroup;
 101         enum bpf_attach_type type;
 102 };
 103
 104 struct bpf_prog_list {
 105         struct hlist_node node;
 106         struct bpf_prog *prog;
 107         struct bpf_cgroup_link *link;
 108         struct bpf_cgroup_storage *storage[MAX_BPF_CGROUP_STORAGE_TYPE];
 109 };
 110
 111 int cgroup_bpf_inherit(struct cgroup *cgrp);
 112 void cgroup_bpf_offline(struct cgroup *cgrp);
 113
 114 int __cgroup_bpf_run_filter_skb(struct sock *sk,
 115                                 struct sk_buff *skb,
 116                                 enum cgroup_bpf_attach_type atype);
 117
 118 int __cgroup_bpf_run_filter_sk(struct sock *sk,
 119                                enum cgroup_bpf_attach_type atype);
 120
 121 int __cgroup_bpf_run_filter_sock_addr(struct sock *sk,
 122                                       struct sockaddr *uaddr,
 123                                       enum cgroup_bpf_attach_type atype,
 124                                       void *t_ctx,
 125                                       u32 *flags);
 126
 127 int __cgroup_bpf_run_filter_sock_ops(struct sock *sk,
 128                                      struct bpf_sock_ops_kern *sock_ops,
 129                                      enum cgroup_bpf_attach_type atype);
 130
 131 int __cgroup_bpf_check_dev_permission(short dev_type, u32 major, u32 minor,
 132                                       short access, enum cgroup_bpf_attach_type atype);
 133
 134 int __cgroup_bpf_run_filter_sysctl(struct ctl_table_header *head,
 135                                    struct ctl_table *table, int write,
 136                                    char **buf, size_t *pcount, loff_t *ppos,
 137                                    enum cgroup_bpf_attach_type atype);
 138
 139 int __cgroup_bpf_run_filter_setsockopt(struct sock *sock, int *level,
 140                                        int *optname, char __user *optval,
 141                                        int *optlen, char **kernel_optval);
 142 int __cgroup_bpf_run_filter_getsockopt(struct sock *sk, int level,
 143                                        int optname, char __user *optval,
 144                                        int __user *optlen, int max_optlen,
 145                                        int retval);
 146
 147 int __cgroup_bpf_run_filter_getsockopt_kern(struct sock *sk, int level,
 148                                             int optname, void *optval,
 149                                             int *optlen, int retval);
 150
 151 static inline enum bpf_cgroup_storage_type cgroup_storage_type(
 152         struct bpf_map *map)
 153 {
 154         if (map->map_type == BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE)
 155                 return BPF_CGROUP_STORAGE_PERCPU;
 156
 157         return BPF_CGROUP_STORAGE_SHARED;
 158 }
 159
 160 struct bpf_cgroup_storage *
 161 cgroup_storage_lookup(struct bpf_cgroup_storage_map *map,
 162                       void *key, bool locked);
 163 struct bpf_cgroup_storage *bpf_cgroup_storage_alloc(struct bpf_prog *prog,
 164                                         enum bpf_cgroup_storage_type stype);
 165 void bpf_cgroup_storage_free(struct bpf_cgroup_storage *storage);
 166 void bpf_cgroup_storage_link(struct bpf_cgroup_storage *storage,
 167                              struct cgroup *cgroup,
 168                              enum bpf_attach_type type);
 169 void bpf_cgroup_storage_unlink(struct bpf_cgroup_storage *storage);
 170 int bpf_cgroup_storage_assign(struct bpf_prog_aux *aux, struct bpf_map *map);
 171
 172 int bpf_percpu_cgroup_storage_copy(struct bpf_map *map, void *key, void *value);
 173 int bpf_percpu_cgroup_storage_update(struct bpf_map *map, void *key,
 174                                      void *value, u64 flags);
 175
 176 /* Opportunistic check to see whether we have any BPF program attached*/
 177 static inline bool cgroup_bpf_sock_enabled(struct sock *sk,
 178                                            enum cgroup_bpf_attach_type type)
 179 {
 180         struct cgroup *cgrp = sock_cgroup_ptr(&sk->sk_cgrp_data);
 181         struct bpf_prog_array *array;
 182
 183         array = rcu_access_pointer(cgrp->bpf.effective[type]);
 184         return array != &bpf_empty_prog_array.hdr;
 185 }
 186
 187 /* Wrappers for __cgroup_bpf_run_filter_skb() guarded by cgroup_bpf_enabled. */
 188 #define BPF_CGROUP_RUN_PROG_INET_INGRESS(sk, skb)                             \
 189 ({                                                                            \
 190         int __ret = 0;                                                        \
 191         if (cgroup_bpf_enabled(CGROUP_INET_INGRESS) &&                        \
 192             cgroup_bpf_sock_enabled(sk, CGROUP_INET_INGRESS))                 \
 193                 __ret = __cgroup_bpf_run_filter_skb(sk, skb,                  \
 194                                                     CGROUP_INET_INGRESS); \
 195                                                                               \
 196         __ret;                                                                \
 197 })
 198
 199 #define BPF_CGROUP_RUN_PROG_INET_EGRESS(sk, skb)                               \
 200 ({                                                                             \
 201         int __ret = 0;                                                         \
 202         if (cgroup_bpf_enabled(CGROUP_INET_EGRESS) && sk && sk == skb->sk) { \
 203                 typeof(sk) __sk = sk_to_full_sk(sk);                           \
 204                 if (sk_fullsock(__sk) &&                                       \
 205                     cgroup_bpf_sock_enabled(__sk, CGROUP_INET_EGRESS))         \
 206                         __ret = __cgroup_bpf_run_filter_skb(__sk, skb,         \
 207                                                       CGROUP_INET_EGRESS); \
 208         }                                                                      \
 209         __ret;                                                                 \
 210 })
 211
 212 #define BPF_CGROUP_RUN_SK_PROG(sk, atype)                                      \
 213 ({                                                                             \
 214         int __ret = 0;                                                         \
 215         if (cgroup_bpf_enabled(atype)) {                                               \
 216                 __ret = __cgroup_bpf_run_filter_sk(sk, atype);                 \
 217         }                                                                      \
 218         __ret;                                                                 \
 219 })
 220
 221 #define BPF_CGROUP_RUN_PROG_INET_SOCK(sk)                                      \
 222         BPF_CGROUP_RUN_SK_PROG(sk, CGROUP_INET_SOCK_CREATE)
 223
 224 #define BPF_CGROUP_RUN_PROG_INET_SOCK_RELEASE(sk)                              \
 225         BPF_CGROUP_RUN_SK_PROG(sk, CGROUP_INET_SOCK_RELEASE)
 226
 227 #define BPF_CGROUP_RUN_PROG_INET4_POST_BIND(sk)                                \
 228         BPF_CGROUP_RUN_SK_PROG(sk, CGROUP_INET4_POST_BIND)
 229
 230 #define BPF_CGROUP_RUN_PROG_INET6_POST_BIND(sk)                                \
 231         BPF_CGROUP_RUN_SK_PROG(sk, CGROUP_INET6_POST_BIND)
 232
 233 #define BPF_CGROUP_RUN_SA_PROG(sk, uaddr, atype)                                       \
 234 ({                                                                             \
 235         int __ret = 0;                                                         \
 236         if (cgroup_bpf_enabled(atype))                                         \
 237                 __ret = __cgroup_bpf_run_filter_sock_addr(sk, uaddr, atype,     \
 238                                                           NULL, NULL);         \
 239         __ret;                                                                 \
 240 })
 241
 242 #define BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, atype, t_ctx)                   \
 243 ({                                                                             \
 244         int __ret = 0;                                                         \
 245         if (cgroup_bpf_enabled(atype))  {                                      \
 246                 lock_sock(sk);                                                 \
 247                 __ret = __cgroup_bpf_run_filter_sock_addr(sk, uaddr, atype,     \
 248                                                           t_ctx, NULL);        \
 249                 release_sock(sk);                                              \
 250         }                                                                      \
 251         __ret;                                                                 \
 252 })
 253
 254 /* BPF_CGROUP_INET4_BIND and BPF_CGROUP_INET6_BIND can return extra flags
 255  * via upper bits of return code. The only flag that is supported
 256  * (at bit position 0) is to indicate CAP_NET_BIND_SERVICE capability check
 257  * should be bypassed (BPF_RET_BIND_NO_CAP_NET_BIND_SERVICE).
 258  */
 259 #define BPF_CGROUP_RUN_PROG_INET_BIND_LOCK(sk, uaddr, atype, bind_flags)               \
 260 ({                                                                             \
 261         u32 __flags = 0;                                                       \
 262         int __ret = 0;                                                         \
 263         if (cgroup_bpf_enabled(atype))  {                                      \
 264                 lock_sock(sk);                                                 \
 265                 __ret = __cgroup_bpf_run_filter_sock_addr(sk, uaddr, atype,     \
 266                                                           NULL, &__flags);     \
 267                 release_sock(sk);                                              \
 268                 if (__flags & BPF_RET_BIND_NO_CAP_NET_BIND_SERVICE)            \
 269                         *bind_flags |= BIND_NO_CAP_NET_BIND_SERVICE;           \
 270         }                                                                      \
 271         __ret;                                                                 \
 272 })
 273
 274 #define BPF_CGROUP_PRE_CONNECT_ENABLED(sk)                                     \
 275         ((cgroup_bpf_enabled(CGROUP_INET4_CONNECT) ||                  \
 276           cgroup_bpf_enabled(CGROUP_INET6_CONNECT)) &&                 \
 277          (sk)->sk_prot->pre_connect)
 278
 279 #define BPF_CGROUP_RUN_PROG_INET4_CONNECT(sk, uaddr)                           \
 280         BPF_CGROUP_RUN_SA_PROG(sk, uaddr, CGROUP_INET4_CONNECT)
 281
 282 #define BPF_CGROUP_RUN_PROG_INET6_CONNECT(sk, uaddr)                           \
 283         BPF_CGROUP_RUN_SA_PROG(sk, uaddr, CGROUP_INET6_CONNECT)
 284
 285 #define BPF_CGROUP_RUN_PROG_INET4_CONNECT_LOCK(sk, uaddr)                      \
 286         BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, CGROUP_INET4_CONNECT, NULL)
 287
 288 #define BPF_CGROUP_RUN_PROG_INET6_CONNECT_LOCK(sk, uaddr)                      \
 289         BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, CGROUP_INET6_CONNECT, NULL)
 290
 291 #define BPF_CGROUP_RUN_PROG_UDP4_SENDMSG_LOCK(sk, uaddr, t_ctx)                \
 292         BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, CGROUP_UDP4_SENDMSG, t_ctx)
 293
 294 #define BPF_CGROUP_RUN_PROG_UDP6_SENDMSG_LOCK(sk, uaddr, t_ctx)                \
 295         BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, CGROUP_UDP6_SENDMSG, t_ctx)
 296
 297 #define BPF_CGROUP_RUN_PROG_UDP4_RECVMSG_LOCK(sk, uaddr)                        \
 298         BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, CGROUP_UDP4_RECVMSG, NULL)
 299
 300 #define BPF_CGROUP_RUN_PROG_UDP6_RECVMSG_LOCK(sk, uaddr)                        \
 301         BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, CGROUP_UDP6_RECVMSG, NULL)
 302
 303 /* The SOCK_OPS"_SK" macro should be used when sock_ops->sk is not a
 304  * fullsock and its parent fullsock cannot be traced by
 305  * sk_to_full_sk().
 306  *
 307  * e.g. sock_ops->sk is a request_sock and it is under syncookie mode.
 308  * Its listener-sk is not attached to the rsk_listener.
 309  * In this case, the caller holds the listener-sk (unlocked),
 310  * set its sock_ops->sk to req_sk, and call this SOCK_OPS"_SK" with
 311  * the listener-sk such that the cgroup-bpf-progs of the
 312  * listener-sk will be run.
 313  *
 314  * Regardless of syncookie mode or not,
 315  * calling bpf_setsockopt on listener-sk will not make sense anyway,
 316  * so passing 'sock_ops->sk == req_sk' to the bpf prog is appropriate here.
 317  */
 318 #define BPF_CGROUP_RUN_PROG_SOCK_OPS_SK(sock_ops, sk)                   \
 319 ({                                                                      \
 320         int __ret = 0;                                                  \
 321         if (cgroup_bpf_enabled(CGROUP_SOCK_OPS))                        \
 322                 __ret = __cgroup_bpf_run_filter_sock_ops(sk,            \
 323                                                          sock_ops,      \
 324                                                          CGROUP_SOCK_OPS); \
 325         __ret;                                                          \
 326 })
 327
 328 #define BPF_CGROUP_RUN_PROG_SOCK_OPS(sock_ops)                                 \
 329 ({                                                                             \
 330         int __ret = 0;                                                         \
 331         if (cgroup_bpf_enabled(CGROUP_SOCK_OPS) && (sock_ops)->sk) {       \
 332                 typeof(sk) __sk = sk_to_full_sk((sock_ops)->sk);               \
 333                 if (__sk && sk_fullsock(__sk))                                 \
 334                         __ret = __cgroup_bpf_run_filter_sock_ops(__sk,         \
 335                                                                  sock_ops,     \
 336                                                          CGROUP_SOCK_OPS); \
 337         }                                                                      \
 338         __ret;                                                                 \
 339 })
 340
 341 #define BPF_CGROUP_RUN_PROG_DEVICE_CGROUP(atype, major, minor, access)        \
 342 ({                                                                            \
 343         int __ret = 0;                                                        \
 344         if (cgroup_bpf_enabled(CGROUP_DEVICE))                        \
 345                 __ret = __cgroup_bpf_check_dev_permission(atype, major, minor, \
 346                                                           access,             \
 347                                                           CGROUP_DEVICE); \
 348                                                                               \
 349         __ret;                                                                \
 350 })
 351
 352
 353 #define BPF_CGROUP_RUN_PROG_SYSCTL(head, table, write, buf, count, pos)  \
 354 ({                                                                             \
 355         int __ret = 0;                                                         \
 356         if (cgroup_bpf_enabled(CGROUP_SYSCTL))                         \
 357                 __ret = __cgroup_bpf_run_filter_sysctl(head, table, write,     \
 358                                                        buf, count, pos,        \
 359                                                        CGROUP_SYSCTL);     \
 360         __ret;                                                                 \
 361 })
 362
 363 #define BPF_CGROUP_RUN_PROG_SETSOCKOPT(sock, level, optname, optval, optlen,   \
 364                                        kernel_optval)                          \
 365 ({                                                                             \
 366         int __ret = 0;                                                         \
 367         if (cgroup_bpf_enabled(CGROUP_SETSOCKOPT) &&                           \
 368             cgroup_bpf_sock_enabled(sock, CGROUP_SETSOCKOPT))                  \
 369                 __ret = __cgroup_bpf_run_filter_setsockopt(sock, level,        \
 370                                                            optname, optval,    \
 371                                                            optlen,             \
 372                                                            kernel_optval);     \
 373         __ret;                                                                 \
 374 })
 375
 376 #define BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN(optlen)                               \
 377 ({                                                                             \
 378         int __ret = 0;                                                         \
 379         if (cgroup_bpf_enabled(CGROUP_GETSOCKOPT))                             \
 380                 get_user(__ret, optlen);                                       \
 381         __ret;                                                                 \
 382 })
 383
 384 #define BPF_CGROUP_RUN_PROG_GETSOCKOPT(sock, level, optname, optval, optlen,   \
 385                                        max_optlen, retval)                     \
 386 ({                                                                             \
 387         int __ret = retval;                                                    \
 388         if (cgroup_bpf_enabled(CGROUP_GETSOCKOPT) &&                           \
 389             cgroup_bpf_sock_enabled(sock, CGROUP_GETSOCKOPT))                  \
 390                 if (!(sock)->sk_prot->bpf_bypass_getsockopt ||                 \
 391                     !INDIRECT_CALL_INET_1((sock)->sk_prot->bpf_bypass_getsockopt, \
 392                                         tcp_bpf_bypass_getsockopt,             \
 393                                         level, optname))                       \
 394                         __ret = __cgroup_bpf_run_filter_getsockopt(            \
 395                                 sock, level, optname, optval, optlen,          \
 396                                 max_optlen, retval);                           \
 397         __ret;                                                                 \
 398 })
 399
 400 #define BPF_CGROUP_RUN_PROG_GETSOCKOPT_KERN(sock, level, optname, optval,      \
 401                                             optlen, retval)                    \
 402 ({                                                                             \
 403         int __ret = retval;                                                    \
 404         if (cgroup_bpf_enabled(CGROUP_GETSOCKOPT))                             \
 405                 __ret = __cgroup_bpf_run_filter_getsockopt_kern(               \
 406                         sock, level, optname, optval, optlen, retval);         \
 407         __ret;                                                                 \
 408 })
 409
 410 int cgroup_bpf_prog_attach(const union bpf_attr *attr,
 411                            enum bpf_prog_type ptype, struct bpf_prog *prog);
 412 int cgroup_bpf_prog_detach(const union bpf_attr *attr,
 413                            enum bpf_prog_type ptype);
 414 int cgroup_bpf_link_attach(const union bpf_attr *attr, struct bpf_prog *prog);
 415 int cgroup_bpf_prog_query(const union bpf_attr *attr,
 416                           union bpf_attr __user *uattr);
 417
 418 const struct bpf_func_proto *
 419 cgroup_common_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog);
 420 const struct bpf_func_proto *
 421 cgroup_current_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog);
 422 #else
 423
 424 static inline int cgroup_bpf_inherit(struct cgroup *cgrp) { return 0; }
 425 static inline void cgroup_bpf_offline(struct cgroup *cgrp) {}
 426
 427 static inline int cgroup_bpf_prog_attach(const union bpf_attr *attr,
 428                                          enum bpf_prog_type ptype,
 429                                          struct bpf_prog *prog)
 430 {
 431         return -EINVAL;
 432 }
 433
 434 static inline int cgroup_bpf_prog_detach(const union bpf_attr *attr,
 435                                          enum bpf_prog_type ptype)
 436 {
 437         return -EINVAL;
 438 }
 439
 440 static inline int cgroup_bpf_link_attach(const union bpf_attr *attr,
 441                                          struct bpf_prog *prog)
 442 {
 443         return -EINVAL;
 444 }
 445
 446 static inline int cgroup_bpf_prog_query(const union bpf_attr *attr,
 447                                         union bpf_attr __user *uattr)
 448 {
 449         return -EINVAL;
 450 }
 451
 452 static inline const struct bpf_func_proto *
 453 cgroup_common_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
 454 {
 455         return NULL;
 456 }
 457
 458 static inline const struct bpf_func_proto *
 459 cgroup_current_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
 460 {
 461         return NULL;
 462 }
 463
 464 static inline int bpf_cgroup_storage_assign(struct bpf_prog_aux *aux,
 465                                             struct bpf_map *map) { return 0; }
 466 static inline struct bpf_cgroup_storage *bpf_cgroup_storage_alloc(
 467         struct bpf_prog *prog, enum bpf_cgroup_storage_type stype) { return NULL; }
 468 static inline void bpf_cgroup_storage_free(
 469         struct bpf_cgroup_storage *storage) {}
 470 static inline int bpf_percpu_cgroup_storage_copy(struct bpf_map *map, void *key,
 471                                                  void *value) {
 472         return 0;
 473 }
 474 static inline int bpf_percpu_cgroup_storage_update(struct bpf_map *map,
 475                                         void *key, void *value, u64 flags) {
 476         return 0;
 477 }
 478
 479 #define cgroup_bpf_enabled(atype) (0)
 480 #define BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, atype, t_ctx) ({ 0; })
 481 #define BPF_CGROUP_RUN_SA_PROG(sk, uaddr, atype) ({ 0; })
 482 #define BPF_CGROUP_PRE_CONNECT_ENABLED(sk) (0)
 483 #define BPF_CGROUP_RUN_PROG_INET_INGRESS(sk,skb) ({ 0; })
 484 #define BPF_CGROUP_RUN_PROG_INET_EGRESS(sk,skb) ({ 0; })
 485 #define BPF_CGROUP_RUN_PROG_INET_SOCK(sk) ({ 0; })
 486 #define BPF_CGROUP_RUN_PROG_INET_SOCK_RELEASE(sk) ({ 0; })
 487 #define BPF_CGROUP_RUN_PROG_INET_BIND_LOCK(sk, uaddr, atype, flags) ({ 0; })
 488 #define BPF_CGROUP_RUN_PROG_INET4_POST_BIND(sk) ({ 0; })
 489 #define BPF_CGROUP_RUN_PROG_INET6_POST_BIND(sk) ({ 0; })
 490 #define BPF_CGROUP_RUN_PROG_INET4_CONNECT(sk, uaddr) ({ 0; })
 491 #define BPF_CGROUP_RUN_PROG_INET4_CONNECT_LOCK(sk, uaddr) ({ 0; })
 492 #define BPF_CGROUP_RUN_PROG_INET6_CONNECT(sk, uaddr) ({ 0; })
 493 #define BPF_CGROUP_RUN_PROG_INET6_CONNECT_LOCK(sk, uaddr) ({ 0; })
 494 #define BPF_CGROUP_RUN_PROG_UDP4_SENDMSG_LOCK(sk, uaddr, t_ctx) ({ 0; })
 495 #define BPF_CGROUP_RUN_PROG_UDP6_SENDMSG_LOCK(sk, uaddr, t_ctx) ({ 0; })
 496 #define BPF_CGROUP_RUN_PROG_UDP4_RECVMSG_LOCK(sk, uaddr) ({ 0; })
 497 #define BPF_CGROUP_RUN_PROG_UDP6_RECVMSG_LOCK(sk, uaddr) ({ 0; })
 498 #define BPF_CGROUP_RUN_PROG_SOCK_OPS(sock_ops) ({ 0; })
 499 #define BPF_CGROUP_RUN_PROG_DEVICE_CGROUP(atype, major, minor, access) ({ 0; })
 500 #define BPF_CGROUP_RUN_PROG_SYSCTL(head,table,write,buf,count,pos) ({ 0; })
 501 #define BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN(optlen) ({ 0; })
 502 #define BPF_CGROUP_RUN_PROG_GETSOCKOPT(sock, level, optname, optval, \
 503                                        optlen, max_optlen, retval) ({ retval; })
 504 #define BPF_CGROUP_RUN_PROG_GETSOCKOPT_KERN(sock, level, optname, optval, \
 505                                             optlen, retval) ({ retval; })
 506 #define BPF_CGROUP_RUN_PROG_SETSOCKOPT(sock, level, optname, optval, optlen, \
 507                                        kernel_optval) ({ 0; })
 508
 509 #define for_each_cgroup_storage_type(stype) for (; false; )
 510
 511 #endif /* CONFIG_CGROUP_BPF */
 512
 513 #endif /* _BPF_CGROUP_H */