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Edit File: bpf_sk_storage.h

/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (c) 2019 Facebook */
#ifndef _BPF_SK_STORAGE_H
#define _BPF_SK_STORAGE_H

#include <linux/rculist.h>
#include <linux/list.h>
#include <linux/hash.h>
#include <linux/types.h>
#include <linux/spinlock.h>
#include <linux/bpf.h>
#include <net/sock.h>
#include <uapi/linux/sock_diag.h>
#include <uapi/linux/btf.h>
#include <linux/bpf_local_storage.h>

struct sock;

void bpf_sk_storage_free(struct sock *sk);

extern const struct bpf_func_proto bpf_sk_storage_get_proto;
extern const struct bpf_func_proto bpf_sk_storage_delete_proto;
extern const struct bpf_func_proto bpf_sk_storage_get_tracing_proto;
extern const struct bpf_func_proto bpf_sk_storage_delete_tracing_proto;

struct bpf_local_storage_elem;
struct bpf_sk_storage_diag;
struct sk_buff;
struct nlattr;

#ifdef CONFIG_BPF_SYSCALL
int bpf_sk_storage_clone(const struct sock *sk, struct sock *newsk);
struct bpf_sk_storage_diag *
bpf_sk_storage_diag_alloc(const struct nlattr *nla_stgs);
void bpf_sk_storage_diag_free(struct bpf_sk_storage_diag *diag);
int bpf_sk_storage_diag_put(struct bpf_sk_storage_diag *diag,
			    struct sock *sk, struct sk_buff *skb,
			    int stg_array_type,
			    unsigned int *res_diag_size);
#else
static inline int bpf_sk_storage_clone(const struct sock *sk,
				       struct sock *newsk)
{
	return 0;
}
static inline struct bpf_sk_storage_diag *
bpf_sk_storage_diag_alloc(const struct nlattr *nla)
{
	return NULL;
}
static inline void bpf_sk_storage_diag_free(struct bpf_sk_storage_diag *diag)
{
}
static inline int bpf_sk_storage_diag_put(struct bpf_sk_storage_diag *diag,
					  struct sock *sk, struct sk_buff *skb,
					  int stg_array_type,
					  unsigned int *res_diag_size)
{
	return 0;
}
#endif

#endif /* _BPF_SK_STORAGE_H */