| /* 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_ */ |
