linux/drivers/net/wireguard/cookie.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Copyright (C) 2015-2019 Jason A. Donenfeld <[email protected]>. All Rights Reserved.
 */

#ifndef _WG_COOKIE_H
#define _WG_COOKIE_H

#include "messages.h"
#include <linux/rwsem.h>

struct wg_peer;

struct cookie_checker { … };

struct cookie { … };

enum cookie_mac_state { … };

void wg_cookie_checker_init(struct cookie_checker *checker,
			    struct wg_device *wg);
void wg_cookie_checker_precompute_device_keys(struct cookie_checker *checker);
void wg_cookie_checker_precompute_peer_keys(struct wg_peer *peer);
void wg_cookie_init(struct cookie *cookie);

enum cookie_mac_state wg_cookie_validate_packet(struct cookie_checker *checker,
						struct sk_buff *skb,
						bool check_cookie);
void wg_cookie_add_mac_to_packet(void *message, size_t len,
				 struct wg_peer *peer);

void wg_cookie_message_create(struct message_handshake_cookie *src,
			      struct sk_buff *skb, __le32 index,
			      struct cookie_checker *checker);
void wg_cookie_message_consume(struct message_handshake_cookie *src,
			       struct wg_device *wg);

#endif /* _WG_COOKIE_H */