socket.h

 1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*  OpenVPN data channel offload
 3 *
 4 *  Copyright (C) 2020-2025 OpenVPN, Inc.
 5 *
 6 *  Author:	James Yonan <james@openvpn.net>
 7 *		Antonio Quartulli <antonio@openvpn.net>
 8 */
 9
10#ifndef _NET_OVPN_SOCK_H_
11#define _NET_OVPN_SOCK_H_
12
13#include <linux/net.h>
14#include <linux/kref.h>
15#include <net/sock.h>
16
17struct ovpn_priv;
18struct ovpn_peer;
19
20/**
21 * struct ovpn_socket - a kernel socket referenced in the ovpn code
22 * @ovpn: ovpn instance owning this socket (UDP only)
23 * @dev_tracker: reference tracker for associated dev (UDP only)
24 * @peer: unique peer transmitting over this socket (TCP only)
25 * @sk: the low level sock object
26 * @refcount: amount of contexts currently referencing this object
27 * @work: member used to schedule release routine (it may block)
28 * @tcp_tx_work: work for deferring outgoing packet processing (TCP only)
29 */
30struct ovpn_socket {
31	union {
32		struct {
33			struct ovpn_priv *ovpn;
34			netdevice_tracker dev_tracker;
35		};
36		struct ovpn_peer *peer;
37	};
38
39	struct sock *sk;
40	struct kref refcount;
41	struct work_struct work;
42	struct work_struct tcp_tx_work;
43};
44
45struct ovpn_socket *ovpn_socket_new(struct socket *sock,
46				    struct ovpn_peer *peer);
47void ovpn_socket_release(struct ovpn_peer *peer);
48
49#endif /* _NET_OVPN_SOCK_H_ */