19 void wg_cookie_checker_init(struct cookie_checker *checker,  in wg_cookie_checker_init()  argument
22 	init_rwsem(&checker->secret_lock);  in wg_cookie_checker_init()
23 	checker->secret_birthdate = ktime_get_coarse_boottime_ns();  in wg_cookie_checker_init()
24 	get_random_bytes(checker->secret, NOISE_HASH_LEN);  in wg_cookie_checker_init()
25 	checker->device = wg;  in wg_cookie_checker_init()
45 void wg_cookie_checker_precompute_device_keys(struct cookie_checker *checker)  in wg_cookie_checker_precompute_device_keys()  argument
47 	if (likely(checker->device->static_identity.has_identity)) {  in wg_cookie_checker_precompute_device_keys()
48 		precompute_key(checker->cookie_encryption_key,  in wg_cookie_checker_precompute_device_keys()
49 			       checker->device->static_identity.static_public,  in wg_cookie_checker_precompute_device_keys()
51 		precompute_key(checker->message_mac1_key,  in wg_cookie_checker_precompute_device_keys()
52 			       checker->device->static_identity.static_public,  in wg_cookie_checker_precompute_device_keys()
55 		memset(checker->cookie_encryption_key, 0,  in wg_cookie_checker_precompute_device_keys()
57 		memset(checker->message_mac1_key, 0, NOISE_SYMMETRIC_KEY_LEN);  in wg_cookie_checker_precompute_device_keys()
92 			struct cookie_checker *checker)  in make_cookie()  argument
96 	if (wg_birthdate_has_expired(checker->secret_birthdate,  in make_cookie()
98 		down_write(&checker->secret_lock);  in make_cookie()
99 		checker->secret_birthdate = ktime_get_coarse_boottime_ns();  in make_cookie()
100 		get_random_bytes(checker->secret, NOISE_HASH_LEN);  in make_cookie()
101 		up_write(&checker->secret_lock);  in make_cookie()
104 	down_read(&checker->secret_lock);  in make_cookie()
106 	blake2s_init_key(&state, COOKIE_LEN, checker->secret, NOISE_HASH_LEN);  in make_cookie()
116 	up_read(&checker->secret_lock);  in make_cookie()
119 enum cookie_mac_state wg_cookie_validate_packet(struct cookie_checker *checker,  in wg_cookie_validate_packet()  argument
131 		     checker->message_mac1_key);  in wg_cookie_validate_packet()
140 	make_cookie(cookie, skb, checker);  in wg_cookie_validate_packet()
147 	if (!wg_ratelimiter_allow(skb, dev_net(checker->device->dev)))  in wg_cookie_validate_packet()
182 			      struct cookie_checker *checker)  in wg_cookie_message_create()  argument
192 	make_cookie(cookie, skb, checker);  in wg_cookie_message_create()
195 				  checker->cookie_encryption_key);  in wg_cookie_message_create()