1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* OpenVPN data channel offload 3 * 4 * Copyright (C) 2019-2025 OpenVPN, Inc. 5 * 6 * Author: James Yonan <james@openvpn.net> 7 * Antonio Quartulli <antonio@openvpn.net> 8 */ 9 10 #ifndef _NET_OVPN_OVPN_H_ 11 #define _NET_OVPN_OVPN_H_ 12 13 /* DATA_V2 header size with AEAD encryption */ 14 #define OVPN_HEAD_ROOM (OVPN_OPCODE_SIZE + OVPN_NONCE_WIRE_SIZE + \ 15 16 /* AEAD TAG length */ + \ 16 max(sizeof(struct udphdr), sizeof(struct tcphdr)) +\ 17 max(sizeof(struct ipv6hdr), sizeof(struct iphdr))) 18 19 /* max padding required by encryption */ 20 #define OVPN_MAX_PADDING 16 21 22 netdev_tx_t ovpn_net_xmit(struct sk_buff *skb, struct net_device *dev); 23 24 void ovpn_recv(struct ovpn_peer *peer, struct sk_buff *skb); 25 26 void ovpn_encrypt_post(void *data, int ret); 27 void ovpn_decrypt_post(void *data, int ret); 28 29 #endif /* _NET_OVPN_OVPN_H_ */ 30