1*e7be843bSPierre Pronchery /* 2*e7be843bSPierre Pronchery * Copyright 2022-2023 The OpenSSL Project Authors. All Rights Reserved. 3*e7be843bSPierre Pronchery * 4*e7be843bSPierre Pronchery * Licensed under the Apache License 2.0 (the "License"). You may not use 5*e7be843bSPierre Pronchery * this file except in compliance with the License. You can obtain a copy 6*e7be843bSPierre Pronchery * in the file LICENSE in the source distribution or at 7*e7be843bSPierre Pronchery * https://www.openssl.org/source/license.html 8*e7be843bSPierre Pronchery */ 9*e7be843bSPierre Pronchery 10*e7be843bSPierre Pronchery #ifndef OSSL_QUIC_STATS_H 11*e7be843bSPierre Pronchery # define OSSL_QUIC_STATS_H 12*e7be843bSPierre Pronchery 13*e7be843bSPierre Pronchery # include <openssl/ssl.h> 14*e7be843bSPierre Pronchery # include "internal/time.h" 15*e7be843bSPierre Pronchery # include "internal/quic_predef.h" 16*e7be843bSPierre Pronchery 17*e7be843bSPierre Pronchery # ifndef OPENSSL_NO_QUIC 18*e7be843bSPierre Pronchery 19*e7be843bSPierre Pronchery struct ossl_statm_st { 20*e7be843bSPierre Pronchery OSSL_TIME smoothed_rtt, latest_rtt, min_rtt, rtt_variance; 21*e7be843bSPierre Pronchery char have_first_sample; 22*e7be843bSPierre Pronchery }; 23*e7be843bSPierre Pronchery 24*e7be843bSPierre Pronchery typedef struct ossl_rtt_info_st { 25*e7be843bSPierre Pronchery /* As defined in RFC 9002. */ 26*e7be843bSPierre Pronchery OSSL_TIME smoothed_rtt, latest_rtt, rtt_variance, min_rtt; 27*e7be843bSPierre Pronchery } OSSL_RTT_INFO; 28*e7be843bSPierre Pronchery 29*e7be843bSPierre Pronchery int ossl_statm_init(OSSL_STATM *statm); 30*e7be843bSPierre Pronchery 31*e7be843bSPierre Pronchery void ossl_statm_destroy(OSSL_STATM *statm); 32*e7be843bSPierre Pronchery 33*e7be843bSPierre Pronchery void ossl_statm_get_rtt_info(OSSL_STATM *statm, OSSL_RTT_INFO *rtt_info); 34*e7be843bSPierre Pronchery 35*e7be843bSPierre Pronchery void ossl_statm_update_rtt(OSSL_STATM *statm, 36*e7be843bSPierre Pronchery OSSL_TIME ack_delay, 37*e7be843bSPierre Pronchery OSSL_TIME override_latest_rtt); 38*e7be843bSPierre Pronchery 39*e7be843bSPierre Pronchery # endif 40*e7be843bSPierre Pronchery 41*e7be843bSPierre Pronchery #endif 42