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
  31 #ifdef CONFIG_BPF_SYSCALL
  32 int bpf_sk_storage_clone(const struct sock *sk, struct sock *newsk);
  33 struct bpf_sk_storage_diag *
  34 bpf_sk_storage_diag_alloc(const struct nlattr *nla_stgs);
  35 void bpf_sk_storage_diag_free(struct bpf_sk_storage_diag *diag);
  36 int bpf_sk_storage_diag_put(struct bpf_sk_storage_diag *diag,
  37                             struct sock *sk, struct sk_buff *skb,
  38                             int stg_array_type,
  39                             unsigned int *res_diag_size);
  40 #else
  41 static inline int bpf_sk_storage_clone(const struct sock *sk,
  42                                        struct sock *newsk)
  43 {
  44         return 0;
  45 }
  46 static inline struct bpf_sk_storage_diag *
  47 bpf_sk_storage_diag_alloc(const struct nlattr *nla)
  48 {
  49         return NULL;
  50 }
  51 static inline void bpf_sk_storage_diag_free(struct bpf_sk_storage_diag *diag)
  52 {
  53 }
  54 static inline int bpf_sk_storage_diag_put(struct bpf_sk_storage_diag *diag,
  55                                           struct sock *sk, struct sk_buff *skb,
  56                                           int stg_array_type,
  57                                           unsigned int *res_diag_size)
  58 {
  59         return 0;
  60 }
  61 #endif
  62
  63 #endif /* _BPF_SK_STORAGE_H */