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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
| commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
| tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/net/wireguard/cookie.h | |
| parent | Initial commit. (diff) | |
| download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip | |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/net/wireguard/cookie.h')
| -rw-r--r-- | drivers/net/wireguard/cookie.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/drivers/net/wireguard/cookie.h b/drivers/net/wireguard/cookie.h new file mode 100644 index 000000000..c4bd61ca0 --- /dev/null +++ b/drivers/net/wireguard/cookie.h @@ -0,0 +1,59 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved. + */ + +#ifndef _WG_COOKIE_H +#define _WG_COOKIE_H + +#include "messages.h" +#include <linux/rwsem.h> + +struct wg_peer; + +struct cookie_checker { + u8 secret[NOISE_HASH_LEN]; + u8 cookie_encryption_key[NOISE_SYMMETRIC_KEY_LEN]; + u8 message_mac1_key[NOISE_SYMMETRIC_KEY_LEN]; + u64 secret_birthdate; + struct rw_semaphore secret_lock; + struct wg_device *device; +}; + +struct cookie { + u64 birthdate; + bool is_valid; + u8 cookie[COOKIE_LEN]; + bool have_sent_mac1; + u8 last_mac1_sent[COOKIE_LEN]; + u8 cookie_decryption_key[NOISE_SYMMETRIC_KEY_LEN]; + u8 message_mac1_key[NOISE_SYMMETRIC_KEY_LEN]; + struct rw_semaphore lock; +}; + +enum cookie_mac_state { + INVALID_MAC, + VALID_MAC_BUT_NO_COOKIE, + VALID_MAC_WITH_COOKIE_BUT_RATELIMITED, + VALID_MAC_WITH_COOKIE +}; + +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 */ |