1 /* SPDX-License-Identifier: GPL-2.0-or-later */
5 * TFRC - Data Structures for the TCP-Friendly Rate Control congestion
6 * control mechanism as specified in RFC 3448.
8 * Copyright (c) 2005 The University of Waikato, Hamilton, New Zealand.
9 * Copyright (c) 2005 Ian McDonald <iam4@cs.waikato.ac.nz>
10 * Copyright (c) 2005 Arnaldo Carvalho de Melo <acme@conectiva.com.br>
11 * Copyright (c) 2003 Nils-Erik Mattsson, Joacim Haggmark, Magnus Erixzon
13 #include <linux/types.h>
15 /** tfrc_rx_info - TFRC Receiver Data Structure
17 * @tfrcrx_x_recv: receiver estimate of sending rate (3.2.2)
18 * @tfrcrx_rtt: round-trip-time (communicated by sender)
19 * @tfrcrx_p: current estimate of loss event rate (3.2.2)
27 /** tfrc_tx_info - TFRC Sender Data Structure
29 * @tfrctx_x: computed transmit rate (4.3 (4))
30 * @tfrctx_x_recv: receiver estimate of send rate (4.3)
31 * @tfrctx_x_calc: return value of throughput equation (3.1)
32 * @tfrctx_rtt: (moving average) estimate of RTT (4.3)
33 * @tfrctx_p: current loss event rate (5.4)
34 * @tfrctx_rto: estimate of RTO, equals 4*RTT (4.3)
35 * @tfrctx_ipi: inter-packet interval (4.6)
37 * Note: X and X_recv are both maintained in units of 64 * bytes/second. This
38 * enables a finer resolution of sending rates and avoids problems with
39 * integer arithmetic; u32 is not sufficient as scaling consumes 6 bits.
51 #endif /* _LINUX_TFRC_H_ */