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/* SPDX-License-Identifier: GPL-2.0-only */
/* OpenVPN data channel offload
*
* Copyright (C) 2019-2025 OpenVPN, Inc.
*
* Author: James Yonan <james@openvpn.net>
* Antonio Quartulli <antonio@openvpn.net>
*/
#ifndef _NET_OVPN_OVPNSTRUCT_H_
#define _NET_OVPN_OVPNSTRUCT_H_
#include <linux/workqueue.h>
#include <net/gro_cells.h>
#include <uapi/linux/if_link.h>
#include <uapi/linux/ovpn.h>
/**
* struct ovpn_peer_collection - container of peers for MultiPeer mode
* @by_id: table of peers index by ID
* @by_vpn_addr4: table of peers indexed by VPN IPv4 address (items can be
* rehashed on the fly due to peer IP change)
* @by_vpn_addr6: table of peers indexed by VPN IPv6 address (items can be
* rehashed on the fly due to peer IP change)
* @by_transp_addr: table of peers indexed by transport address (items can be
* rehashed on the fly due to peer IP change)
*/
struct ovpn_peer_collection {
DECLARE_HASHTABLE(by_id, 12);
struct hlist_nulls_head by_vpn_addr4[1 << 12];
struct hlist_nulls_head by_vpn_addr6[1 << 12];
struct hlist_nulls_head by_transp_addr[1 << 12];
};
/**
* struct ovpn_priv - per ovpn interface state
* @dev: the actual netdev representing the tunnel
* @mode: device operation mode (i.e. p2p, mp, ..)
* @lock: protect this object
* @peers: data structures holding multi-peer references
* @peer: in P2P mode, this is the only remote peer
* @gro_cells: pointer to the Generic Receive Offload cell
* @keepalive_work: struct used to schedule keepalive periodic job
*/
struct ovpn_priv {
struct net_device *dev;
enum ovpn_mode mode;
spinlock_t lock; /* protect writing to the ovpn_priv object */
struct ovpn_peer_collection *peers;
struct ovpn_peer __rcu *peer;
struct gro_cells gro_cells;
struct delayed_work keepalive_work;
};
#endif /* _NET_OVPN_OVPNSTRUCT_H_ */
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