/* 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_OVPN_H_ #define _NET_OVPN_OVPN_H_ /* DATA_V2 header size with AEAD encryption */ #define OVPN_HEAD_ROOM (OVPN_OPCODE_SIZE + OVPN_NONCE_WIRE_SIZE + \ 16 /* AEAD TAG length */ + \ max(sizeof(struct udphdr), sizeof(struct tcphdr)) +\ max(sizeof(struct ipv6hdr), sizeof(struct iphdr))) /* max padding required by encryption */ #define OVPN_MAX_PADDING 16 #define OVPN_KEEPALIVE_SIZE 16 extern const unsigned char ovpn_keepalive_message[OVPN_KEEPALIVE_SIZE]; netdev_tx_t ovpn_net_xmit(struct sk_buff *skb, struct net_device *dev); void ovpn_recv(struct ovpn_peer *peer, struct sk_buff *skb); void ovpn_xmit_special(struct ovpn_peer *peer, const void *data, const unsigned int len); void ovpn_encrypt_post(void *data, int ret); void ovpn_decrypt_post(void *data, int ret); #endif /* _NET_OVPN_OVPN_H_ */