1 /*- 2 * Copyright (c) 2017 Tom Jones <tj@enoti.me> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #ifndef _CC_NEWRENO_H 28 #define _CC_NEWRENO_H 29 30 #define CCALGONAME_NEWRENO "newreno" 31 32 struct newreno { 33 uint32_t beta; 34 uint32_t beta_ecn; 35 uint32_t newreno_flags; 36 uint32_t css_baseline_minrtt; 37 uint32_t css_current_round_minrtt; 38 uint32_t css_lastround_minrtt; 39 uint32_t css_rttsample_count; 40 uint32_t css_entered_at_round; 41 uint32_t css_current_round; 42 uint32_t css_fas_at_css_entry; 43 uint32_t css_lowrtt_fas; 44 uint32_t css_last_fas; 45 }; 46 47 struct cc_newreno_opts { 48 int name; 49 uint32_t val; 50 }; 51 52 #define CC_NEWRENO_BETA 1 /* Beta for normal DUP-ACK/Sack recovery */ 53 #define CC_NEWRENO_BETA_ECN 2 /* ECN Beta for Abe */ 54 55 /* Flags values */ 56 #define CC_NEWRENO_HYSTART_ENABLED 0x0002 /* We can do hystart, a loss removes this flag */ 57 #define CC_NEWRENO_HYSTART_IN_CSS 0x0004 /* If we enter hystart CSS this flag is set */ 58 #define CC_NEWRENO_BETA_ECN_ENABLED 0x0020 59 #endif /* _CC_NEWRENO_H */ 60