aboutsummaryrefslogtreecommitdiffstats
path: root/include/linux/random.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/random.h')
-rw-r--r--include/linux/random.h14
1 files changed, 10 insertions, 4 deletions
diff --git a/include/linux/random.h b/include/linux/random.h
index 6312dd9ba449..4002b3df4c85 100644
--- a/include/linux/random.h
+++ b/include/linux/random.h
@@ -29,8 +29,13 @@ unsigned long randomize_range(unsigned long start, unsigned long end, unsigned l
29u32 prandom_u32(void); 29u32 prandom_u32(void);
30void prandom_bytes(void *buf, int nbytes); 30void prandom_bytes(void *buf, int nbytes);
31void prandom_seed(u32 seed); 31void prandom_seed(u32 seed);
32void prandom_reseed_late(void);
32 33
33u32 prandom_u32_state(struct rnd_state *); 34struct rnd_state {
35 __u32 s1, s2, s3, s4;
36};
37
38u32 prandom_u32_state(struct rnd_state *state);
34void prandom_bytes_state(struct rnd_state *state, void *buf, int nbytes); 39void prandom_bytes_state(struct rnd_state *state, void *buf, int nbytes);
35 40
36/* 41/*
@@ -50,9 +55,10 @@ static inline void prandom_seed_state(struct rnd_state *state, u64 seed)
50{ 55{
51 u32 i = (seed >> 32) ^ (seed << 10) ^ seed; 56 u32 i = (seed >> 32) ^ (seed << 10) ^ seed;
52 57
53 state->s1 = __seed(i, 1); 58 state->s1 = __seed(i, 2U);
54 state->s2 = __seed(i, 7); 59 state->s2 = __seed(i, 8U);
55 state->s3 = __seed(i, 15); 60 state->s3 = __seed(i, 16U);
61 state->s4 = __seed(i, 128U);
56} 62}
57 63
58#ifdef CONFIG_ARCH_RANDOM 64#ifdef CONFIG_ARCH_RANDOM