blob: c23ee1f7ee80621467466e3f303d2cb294f8f8c8 [file] [log] [blame]
* Software async multibuffer crypto daemon headers
* Author:
* Tim Chen <>
* Copyright (c) 2014, Intel Corporation.
#include <linux/crypto.h>
#include <linux/kernel.h>
#include <crypto/hash.h>
struct mcryptd_ahash {
struct crypto_ahash base;
static inline struct mcryptd_ahash *__mcryptd_ahash_cast(
struct crypto_ahash *tfm)
return (struct mcryptd_ahash *)tfm;
struct mcryptd_cpu_queue {
struct crypto_queue queue;
struct work_struct work;
struct mcryptd_queue {
struct mcryptd_cpu_queue __percpu *cpu_queue;
struct mcryptd_instance_ctx {
struct crypto_spawn spawn;
struct mcryptd_queue *queue;
struct mcryptd_hash_ctx {
struct crypto_shash *child;
struct mcryptd_alg_state *alg_state;
struct mcryptd_tag {
/* seq number of request */
unsigned seq_num;
/* arrival time of request */
unsigned long arrival;
unsigned long expire;
int cpu;
struct mcryptd_hash_request_ctx {
struct list_head waiter;
crypto_completion_t complete;
struct mcryptd_tag tag;
struct crypto_hash_walk walk;
u8 *out;
int flag;
struct shash_desc desc;
struct mcryptd_ahash *mcryptd_alloc_ahash(const char *alg_name,
u32 type, u32 mask);
struct crypto_shash *mcryptd_ahash_child(struct mcryptd_ahash *tfm);
struct shash_desc *mcryptd_shash_desc(struct ahash_request *req);
void mcryptd_free_ahash(struct mcryptd_ahash *tfm);
void mcryptd_flusher(struct work_struct *work);
enum mcryptd_req_type {
struct mcryptd_alg_cstate {
unsigned long next_flush;
unsigned next_seq_num;
bool flusher_engaged;
struct delayed_work flush;
int cpu;
struct mcryptd_alg_state *alg_state;
void *mgr;
spinlock_t work_lock;
struct list_head work_list;
struct list_head flush_list;
struct mcryptd_alg_state {
struct mcryptd_alg_cstate __percpu *alg_cstate;
unsigned long (*flusher)(struct mcryptd_alg_cstate *cstate);
/* return delay in jiffies from current time */
static inline unsigned long get_delay(unsigned long t)
long delay;
delay = (long) t - (long) jiffies;
if (delay <= 0)
return 0;
return (unsigned long) delay;
void mcryptd_arm_flusher(struct mcryptd_alg_cstate *cstate, unsigned long delay);