#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
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 */
#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_ */
nux/net-next.git/diff/tools/gpio/Makefile?h=nds-private-remove&amp;id=095cbe66973771fecd8e8b1e8763181363ef703e'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/tools/gpio/Makefile'>
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<option value='grep'>log msg</option>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?h=nds-private-remove&amp;id=095cbe66973771fecd8e8b1e8763181363ef703e'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools?h=nds-private-remove&amp;id=095cbe66973771fecd8e8b1e8763181363ef703e'>tools</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/gpio?h=nds-private-remove&amp;id=095cbe66973771fecd8e8b1e8763181363ef703e'>gpio</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/gpio/Makefile?h=nds-private-remove&amp;id=095cbe66973771fecd8e8b1e8763181363ef703e'>Makefile</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='095cbe66973771fecd8e8b1e8763181363ef703e'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-22 12:47:48 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-22 12:47:48 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/gpio/Makefile?h=nds-private-remove&amp;id=095cbe66973771fecd8e8b1e8763181363ef703e'>095cbe66973771fecd8e8b1e8763181363ef703e</a> (<a href='/cgit.cgi/linux/net-next.git/patch/tools/gpio/Makefile?id=095cbe66973771fecd8e8b1e8763181363ef703e'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=095cbe66973771fecd8e8b1e8763181363ef703e'>c361a93d62ed171ac958deb0d4ff0faa980bb290</a> /<a href='/cgit.cgi/linux/net-next.git/tree/tools/gpio/Makefile?h=nds-private-remove&amp;id=095cbe66973771fecd8e8b1e8763181363ef703e'>tools/gpio/Makefile</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/gpio/Makefile?h=nds-private-remove&amp;id=24b86839fab8e8059d2b16e0067dc86a1a0d3514'>24b86839fab8e8059d2b16e0067dc86a1a0d3514</a> (<a href='/cgit.cgi/linux/net-next.git/diff/tools/gpio/Makefile?h=nds-private-remove&amp;id=095cbe66973771fecd8e8b1e8763181363ef703e&amp;id2=24b86839fab8e8059d2b16e0067dc86a1a0d3514'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/gpio/Makefile?h=nds-private-remove&amp;id=020eb3daaba2857b32c4cf4c82f503d6a00a67de'>020eb3daaba2857b32c4cf4c82f503d6a00a67de</a> (<a href='/cgit.cgi/linux/net-next.git/diff/tools/gpio/Makefile?h=nds-private-remove&amp;id=095cbe66973771fecd8e8b1e8763181363ef703e&amp;id2=020eb3daaba2857b32c4cf4c82f503d6a00a67de'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip</div><div class='commit-msg'>Pull x86 fix from Thomas Gleixner:
 "Restore the retrigger callbacks in the IO APIC irq chips. That
  addresses a long standing regression which got introduced with the
  rewrite of the x86 irq subsystem two years ago and went unnoticed so
  far"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/ioapic: Restore IO-APIC irq_chip retrigger callback
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=095cbe66973771fecd8e8b1e8763181363ef703e'>Diffstat</a> (limited to 'tools/gpio/Makefile')</div><table summary='diffstat' class='diffstat'>