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
32struct 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
47struct 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 */