1 /*
2  *	Linux ethernet bridge
3  *
4  *	Authors:
5  *	Lennert Buytenhek		<buytenh@gnu.org>
6  *
7  *	$Id: br_private_timer.h,v 1.1 2000/02/18 16:47:13 davem Exp $
8  *
9  *	This program is free software; you can redistribute it and/or
10  *	modify it under the terms of the GNU General Public License
11  *	as published by the Free Software Foundation; either version
12  *	2 of the License, or (at your option) any later version.
13  */
14 
15 #ifndef _BR_PRIVATE_TIMER_H
16 #define _BR_PRIVATE_TIMER_H
17 
18 struct br_timer
19 {
20 	int running;
21 	unsigned long expires;
22 };
23 
br_timer_clear(struct br_timer * t)24 extern __inline__ void br_timer_clear(struct br_timer *t)
25 {
26 	t->running = 0;
27 }
28 
br_timer_get_residue(struct br_timer * t)29 extern __inline__ unsigned long br_timer_get_residue(struct br_timer *t)
30 {
31 	if (t->running)
32 		return jiffies - t->expires;
33 
34 	return 0;
35 }
36 
br_timer_set(struct br_timer * t,unsigned long x)37 extern __inline__ void br_timer_set(struct br_timer *t, unsigned long x)
38 {
39 	t->expires = x;
40 	t->running = 1;
41 }
42 
br_timer_is_running(struct br_timer * t)43 extern __inline__ int br_timer_is_running(struct br_timer *t)
44 {
45 	return t->running;
46 }
47 
br_timer_has_expired(struct br_timer * t,unsigned long to)48 extern __inline__ int br_timer_has_expired(struct br_timer *t, unsigned long to)
49 {
50 	return t->running && time_after_eq(jiffies, t->expires + to);
51 }
52 
53 
54 #endif
55