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Diffstat (limited to 'net/dccp/ccids/lib/tfrc.h')
| -rw-r--r-- | net/dccp/ccids/lib/tfrc.h | 73 |
1 files changed, 0 insertions, 73 deletions
diff --git a/net/dccp/ccids/lib/tfrc.h b/net/dccp/ccids/lib/tfrc.h deleted file mode 100644 index 0a63e8750cc5..000000000000 --- a/net/dccp/ccids/lib/tfrc.h +++ /dev/null @@ -1,73 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-or-later */ -#ifndef _TFRC_H_ -#define _TFRC_H_ -/* - * Copyright (c) 2007 The University of Aberdeen, Scotland, UK - * Copyright (c) 2005-6 The University of Waikato, Hamilton, New Zealand. - * Copyright (c) 2005-6 Ian McDonald <ian.mcdonald@jandi.co.nz> - * Copyright (c) 2005 Arnaldo Carvalho de Melo <acme@conectiva.com.br> - * Copyright (c) 2003 Nils-Erik Mattsson, Joacim Haggmark, Magnus Erixzon - */ -#include <linux/types.h> -#include <linux/math64.h> -#include "../../dccp.h" - -/* internal includes that this library exports: */ -#include "loss_interval.h" -#include "packet_history.h" - -#ifdef CONFIG_IP_DCCP_TFRC_DEBUG -extern bool tfrc_debug; -#define tfrc_pr_debug(format, a...) DCCP_PR_DEBUG(tfrc_debug, format, ##a) -#else -#define tfrc_pr_debug(format, a...) -#endif - -/* integer-arithmetic divisions of type (a * 1000000)/b */ -static inline u64 scaled_div(u64 a, u64 b) -{ - BUG_ON(b == 0); - return div64_u64(a * 1000000, b); -} - -static inline u32 scaled_div32(u64 a, u64 b) -{ - u64 result = scaled_div(a, b); - - if (result > UINT_MAX) { - DCCP_CRIT("Overflow: %llu/%llu > UINT_MAX", - (unsigned long long)a, (unsigned long long)b); - return UINT_MAX; - } - return result; -} - -/** - * tfrc_ewma - Exponentially weighted moving average - * @weight: Weight to be used as damping factor, in units of 1/10 - */ -static inline u32 tfrc_ewma(const u32 avg, const u32 newval, const u8 weight) -{ - return avg ? (weight * avg + (10 - weight) * newval) / 10 : newval; -} - -u32 tfrc_calc_x(u16 s, u32 R, u32 p); -u32 tfrc_calc_x_reverse_lookup(u32 fvalue); -u32 tfrc_invert_loss_event_rate(u32 loss_event_rate); - -int tfrc_tx_packet_history_init(void); -void tfrc_tx_packet_history_exit(void); -int tfrc_rx_packet_history_init(void); -void tfrc_rx_packet_history_exit(void); - -int tfrc_li_init(void); -void tfrc_li_exit(void); - -#ifdef CONFIG_IP_DCCP_TFRC_LIB -int tfrc_lib_init(void); -void tfrc_lib_exit(void); -#else -#define tfrc_lib_init() (0) -#define tfrc_lib_exit() -#endif -#endif /* _TFRC_H_ */ |