diff options
Diffstat (limited to 'kernel/include/linux/random.h')
| -rw-r--r-- | kernel/include/linux/random.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/kernel/include/linux/random.h b/kernel/include/linux/random.h index 4a64ad52d..1a8043616 100644 --- a/kernel/include/linux/random.h +++ b/kernel/include/linux/random.h @@ -6,14 +6,25 @@ #ifndef _LINUX_RANDOM_H #define _LINUX_RANDOM_H +#include <linux/list.h> +#include <linux/once.h> + #include <uapi/linux/random.h> +struct random_ready_callback { + struct list_head list; + void (*func)(struct random_ready_callback *rdy); + struct module *owner; +}; + extern void add_device_randomness(const void *, unsigned int); extern void add_input_randomness(unsigned int type, unsigned int code, unsigned int value); extern void add_interrupt_randomness(int irq, int irq_flags, __u64 ip); extern void get_random_bytes(void *buf, int nbytes); +extern int add_random_ready_callback(struct random_ready_callback *rdy); +extern void del_random_ready_callback(struct random_ready_callback *rdy); extern void get_random_bytes_arch(void *buf, int nbytes); void generate_random_uuid(unsigned char uuid_out[16]); extern int random_int_secret_init(void); @@ -36,6 +47,10 @@ struct rnd_state { 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)) /** * prandom_u32_max - returns a pseudo-random number in interval [0, ep_ro) |