include/net/bpf_sk_storage.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* Copyright (c) 2019 Facebook */
   3 #ifndef _BPF_SK_STORAGE_H
   4 #define _BPF_SK_STORAGE_H
   5
   6 #include <linux/rculist.h>
   7 #include <linux/list.h>
   8 #include <linux/hash.h>
   9 #include <linux/types.h>
  10 #include <linux/spinlock.h>
  11 #include <linux/bpf.h>
  12 #include <net/sock.h>
  13 #include <uapi/linux/sock_diag.h>
  14 #include <uapi/linux/btf.h>
  15 #include <linux/bpf_local_storage.h>
  16
  17 struct sock;
  18
  19 void bpf_sk_storage_free(struct sock *sk);
  20
  21 extern const struct bpf_func_proto bpf_sk_storage_get_proto;
  22 extern const struct bpf_func_proto bpf_sk_storage_delete_proto;
  23 extern const struct bpf_func_proto bpf_sk_storage_get_tracing_proto;
  24 extern const struct bpf_func_proto bpf_sk_storage_delete_tracing_proto;
  25
  26 struct bpf_local_storage_elem;
  27 struct bpf_sk_storage_diag;
  28 struct sk_buff;
  29 struct nlattr;
  30 struct sock;
  31
  32 #ifdef CONFIG_BPF_SYSCALL
  33 int bpf_sk_storage_clone(const struct sock *sk, struct sock *newsk);
  34 struct bpf_sk_storage_diag *
  35 bpf_sk_storage_diag_alloc(const struct nlattr *nla_stgs);
  36 void bpf_sk_storage_diag_free(struct bpf_sk_storage_diag *diag);
  37 int bpf_sk_storage_diag_put(struct bpf_sk_storage_diag *diag,
  38                             struct sock *sk, struct sk_buff *skb,
  39                             int stg_array_type,
  40                             unsigned int *res_diag_size);
  41 #else
  42 static inline int bpf_sk_storage_clone(const struct sock *sk,
  43                                        struct sock *newsk)
  44 {
  45         return 0;
  46 }
  47 static inline struct bpf_sk_storage_diag *
  48 bpf_sk_storage_diag_alloc(const struct nlattr *nla)
  49 {
  50         return NULL;
  51 }
  52 static inline void bpf_sk_storage_diag_free(struct bpf_sk_storage_diag *diag)
  53 {
  54 }
  55 static inline int bpf_sk_storage_diag_put(struct bpf_sk_storage_diag *diag,
  56                                           struct sock *sk, struct sk_buff *skb,
  57                                           int stg_array_type,
  58                                           unsigned int *res_diag_size)
  59 {
  60         return 0;
  61 }
  62 #endif
  63
  64 #endif /* _BPF_SK_STORAGE_H */