From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- drivers/net/wireguard/messages.h | 128 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 128 insertions(+) create mode 100644 drivers/net/wireguard/messages.h (limited to 'drivers/net/wireguard/messages.h') diff --git a/drivers/net/wireguard/messages.h b/drivers/net/wireguard/messages.h new file mode 100644 index 000000000..208da7267 --- /dev/null +++ b/drivers/net/wireguard/messages.h @@ -0,0 +1,128 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2015-2019 Jason A. Donenfeld . All Rights Reserved. + */ + +#ifndef _WG_MESSAGES_H +#define _WG_MESSAGES_H + +#include +#include +#include + +#include +#include +#include + +enum noise_lengths { + NOISE_PUBLIC_KEY_LEN = CURVE25519_KEY_SIZE, + NOISE_SYMMETRIC_KEY_LEN = CHACHA20POLY1305_KEY_SIZE, + NOISE_TIMESTAMP_LEN = sizeof(u64) + sizeof(u32), + NOISE_AUTHTAG_LEN = CHACHA20POLY1305_AUTHTAG_SIZE, + NOISE_HASH_LEN = BLAKE2S_HASH_SIZE +}; + +#define noise_encrypted_len(plain_len) ((plain_len) + NOISE_AUTHTAG_LEN) + +enum cookie_values { + COOKIE_SECRET_MAX_AGE = 2 * 60, + COOKIE_SECRET_LATENCY = 5, + COOKIE_NONCE_LEN = XCHACHA20POLY1305_NONCE_SIZE, + COOKIE_LEN = 16 +}; + +enum counter_values { + COUNTER_BITS_TOTAL = 8192, + COUNTER_REDUNDANT_BITS = BITS_PER_LONG, + COUNTER_WINDOW_SIZE = COUNTER_BITS_TOTAL - COUNTER_REDUNDANT_BITS +}; + +enum limits { + REKEY_AFTER_MESSAGES = 1ULL << 60, + REJECT_AFTER_MESSAGES = U64_MAX - COUNTER_WINDOW_SIZE - 1, + REKEY_TIMEOUT = 5, + REKEY_TIMEOUT_JITTER_MAX_JIFFIES = HZ / 3, + REKEY_AFTER_TIME = 120, + REJECT_AFTER_TIME = 180, + INITIATIONS_PER_SECOND = 50, + MAX_PEERS_PER_DEVICE = 1U << 20, + KEEPALIVE_TIMEOUT = 10, + MAX_TIMER_HANDSHAKES = 90 / REKEY_TIMEOUT, + MAX_QUEUED_INCOMING_HANDSHAKES = 4096, /* TODO: replace this with DQL */ + MAX_STAGED_PACKETS = 128, + MAX_QUEUED_PACKETS = 1024 /* TODO: replace this with DQL */ +}; + +enum message_type { + MESSAGE_INVALID = 0, + MESSAGE_HANDSHAKE_INITIATION = 1, + MESSAGE_HANDSHAKE_RESPONSE = 2, + MESSAGE_HANDSHAKE_COOKIE = 3, + MESSAGE_DATA = 4 +}; + +struct message_header { + /* The actual layout of this that we want is: + * u8 type + * u8 reserved_zero[3] + * + * But it turns out that by encoding this as little endian, + * we achieve the same thing, and it makes checking faster. + */ + __le32 type; +}; + +struct message_macs { + u8 mac1[COOKIE_LEN]; + u8 mac2[COOKIE_LEN]; +}; + +struct message_handshake_initiation { + struct message_header header; + __le32 sender_index; + u8 unencrypted_ephemeral[NOISE_PUBLIC_KEY_LEN]; + u8 encrypted_static[noise_encrypted_len(NOISE_PUBLIC_KEY_LEN)]; + u8 encrypted_timestamp[noise_encrypted_len(NOISE_TIMESTAMP_LEN)]; + struct message_macs macs; +}; + +struct message_handshake_response { + struct message_header header; + __le32 sender_index; + __le32 receiver_index; + u8 unencrypted_ephemeral[NOISE_PUBLIC_KEY_LEN]; + u8 encrypted_nothing[noise_encrypted_len(0)]; + struct message_macs macs; +}; + +struct message_handshake_cookie { + struct message_header header; + __le32 receiver_index; + u8 nonce[COOKIE_NONCE_LEN]; + u8 encrypted_cookie[noise_encrypted_len(COOKIE_LEN)]; +}; + +struct message_data { + struct message_header header; + __le32 key_idx; + __le64 counter; + u8 encrypted_data[]; +}; + +#define message_data_len(plain_len) \ + (noise_encrypted_len(plain_len) + sizeof(struct message_data)) + +enum message_alignments { + MESSAGE_PADDING_MULTIPLE = 16, + MESSAGE_MINIMUM_LENGTH = message_data_len(0) +}; + +#define SKB_HEADER_LEN \ + (max(sizeof(struct iphdr), sizeof(struct ipv6hdr)) + \ + sizeof(struct udphdr) + NET_SKB_PAD) +#define DATA_PACKET_HEAD_ROOM \ + ALIGN(sizeof(struct message_data) + SKB_HEADER_LEN, 4) + +enum { HANDSHAKE_DSCP = 0x88 /* AF41, plus 00 ECN */ }; + +#endif /* _WG_MESSAGES_H */ -- cgit v1.2.3