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
  24 struct bpf_local_storage_elem;
  25 struct bpf_sk_storage_diag;
  26 struct sk_buff;
  27 struct nlattr;
  28 struct sock;
  29
  30 #ifdef CONFIG_BPF_SYSCALL
  31 int bpf_sk_storage_clone(const struct sock *sk, struct sock *newsk);
  32 struct bpf_sk_storage_diag *
  33 bpf_sk_storage_diag_alloc(const struct nlattr *nla_stgs);
  34 void bpf_sk_storage_diag_free(struct bpf_sk_storage_diag *diag);
  35 int bpf_sk_storage_diag_put(struct bpf_sk_storage_diag *diag,
  36                             struct sock *sk, struct sk_buff *skb,
  37                             int stg_array_type,
  38                             unsigned int *res_diag_size);
  39 #else
  40 static inline int bpf_sk_storage_clone(const struct sock *sk,
  41                                        struct sock *newsk)
  42 {
  43         return 0;
  44 }
  45 static inline struct bpf_sk_storage_diag *
  46 bpf_sk_storage_diag_alloc(const struct nlattr *nla)
  47 {
  48         return NULL;
  49 }
  50 static inline void bpf_sk_storage_diag_free(struct bpf_sk_storage_diag *diag)
  51 {
  52 }
  53 static inline int bpf_sk_storage_diag_put(struct bpf_sk_storage_diag *diag,
  54                                           struct sock *sk, struct sk_buff *skb,
  55                                           int stg_array_type,
  56                                           unsigned int *res_diag_size)
  57 {
  58         return 0;
  59 }
  60 #endif
  61
  62 #endif /* _BPF_SK_STORAGE_H */