Contributors: 11
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Stephen Hemminger |
51 |
25.25% |
3 |
15.00% |
| Joe Eykholt |
48 |
23.76% |
1 |
5.00% |
| Daniel Borkmann |
45 |
22.28% |
5 |
25.00% |
| Tom Herbert |
18 |
8.91% |
1 |
5.00% |
| Akinobu Mita |
15 |
7.43% |
2 |
10.00% |
| Linus Torvalds |
11 |
5.45% |
1 |
5.00% |
| Linus Torvalds (pre-git) |
5 |
2.48% |
2 |
10.00% |
| Richard Fitzgerald |
4 |
1.98% |
1 |
5.00% |
| Jason A. Donenfeld |
3 |
1.49% |
2 |
10.00% |
| Greg Kroah-Hartman |
1 |
0.50% |
1 |
5.00% |
| Hannes Frederic Sowa |
1 |
0.50% |
1 |
5.00% |
| Total |
202 |
|
20 |
|
/* SPDX-License-Identifier: GPL-2.0 */
/*
* include/linux/prandom.h
*
* Include file for the fast pseudo-random 32-bit
* generation.
*/
#ifndef _LINUX_PRANDOM_H
#define _LINUX_PRANDOM_H
#include <linux/types.h>
#include <linux/once.h>
#include <linux/random.h>
struct rnd_state {
__u32 s1, s2, s3, s4;
};
u32 prandom_u32_state(struct rnd_state *state);
void prandom_bytes_state(struct rnd_state *state, void *buf, size_t nbytes);
void prandom_seed_full_state(struct rnd_state __percpu *pcpu_state);
#define prandom_init_once(pcpu_state) \
DO_ONCE(prandom_seed_full_state, (pcpu_state))
/*
* Handle minimum values for seeds
*/
static inline u32 __seed(u32 x, u32 m)
{
return (x < m) ? x + m : x;
}
/**
* prandom_seed_state - set seed for prandom_u32_state().
* @state: pointer to state structure to receive the seed.
* @seed: arbitrary 64-bit value to use as a seed.
*/
static inline void prandom_seed_state(struct rnd_state *state, u64 seed)
{
u32 i = ((seed >> 32) ^ (seed << 10) ^ seed) & 0xffffffffUL;
state->s1 = __seed(i, 2U);
state->s2 = __seed(i, 8U);
state->s3 = __seed(i, 16U);
state->s4 = __seed(i, 128U);
}
/* Pseudo random number generator from numerical recipes. */
static inline u32 next_pseudo_random32(u32 seed)
{
return seed * 1664525 + 1013904223;
}
#endif