1 /* 2 * Copyright 2022-2023 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the Apache License 2.0 (the "License"). You may not use 5 * this file except in compliance with the License. You can obtain a copy 6 * in the file LICENSE in the source distribution or at 7 * https://www.openssl.org/source/license.html 8 */ 9 10 #ifndef OSSL_QUIC_STATS_H 11 #define OSSL_QUIC_STATS_H 12 13 #include <openssl/ssl.h> 14 #include "internal/time.h" 15 #include "internal/quic_predef.h" 16 17 #ifndef OPENSSL_NO_QUIC 18 19 struct ossl_statm_st { 20 OSSL_TIME smoothed_rtt, latest_rtt, min_rtt, rtt_variance; 21 char have_first_sample; 22 }; 23 24 typedef struct ossl_rtt_info_st { 25 /* As defined in RFC 9002. */ 26 OSSL_TIME smoothed_rtt, latest_rtt, rtt_variance, min_rtt; 27 } OSSL_RTT_INFO; 28 29 int ossl_statm_init(OSSL_STATM *statm); 30 31 void ossl_statm_destroy(OSSL_STATM *statm); 32 33 void ossl_statm_get_rtt_info(OSSL_STATM *statm, OSSL_RTT_INFO *rtt_info); 34 35 void ossl_statm_update_rtt(OSSL_STATM *statm, 36 OSSL_TIME ack_delay, 37 OSSL_TIME override_latest_rtt); 38 39 #endif 40 41 #endif 42