diff options
Diffstat (limited to 'drivers/net/ovpn/io.h')
| -rw-r--r-- | drivers/net/ovpn/io.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/net/ovpn/io.h b/drivers/net/ovpn/io.h new file mode 100644 index 000000000000..db9e10f9077c --- /dev/null +++ b/drivers/net/ovpn/io.h @@ -0,0 +1,34 @@ +/* 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_ */ |