blob: 8058d9c5e23610f93773cbefd06e862e9b8c459d (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
/*
* Generic address resultion entity
*
* Authors:
* net_random Alan Cox
* net_ratelimit Andy Kleen
*
* Created by Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
*
* 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/module.h>
#include <linux/jiffies.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/string.h>
#include <linux/types.h>
#include <asm/system.h>
#include <asm/uaccess.h>
static unsigned long net_rand_seed = 152L;
unsigned long net_random(void)
{
net_rand_seed=net_rand_seed*69069L+1;
return net_rand_seed^jiffies;
}
void net_srandom(unsigned long entropy)
{
net_rand_seed ^= entropy;
net_random();
}
int net_msg_cost = 5*HZ;
int net_msg_burst = 10;
/*
* All net warning printk()s should be guarded by this function.
*/
int net_ratelimit(void)
{
return __printk_ratelimit(net_msg_cost, net_msg_burst);
}
EXPORT_SYMBOL(net_random);
EXPORT_SYMBOL(net_ratelimit);
EXPORT_SYMBOL(net_srandom);
|
