2 * Software async multibuffer crypto daemon headers
5 * Tim Chen <tim.c.chen@linux.intel.com>
7 * Copyright (c) 2014, Intel Corporation.
10 #ifndef _CRYPTO_MCRYPT_H
11 #define _CRYPTO_MCRYPT_H
13 #include <linux/crypto.h>
14 #include <linux/kernel.h>
15 #include <crypto/hash.h>
17 struct mcryptd_ahash {
18 struct crypto_ahash base;
21 static inline struct mcryptd_ahash *__mcryptd_ahash_cast(
22 struct crypto_ahash *tfm)
24 return (struct mcryptd_ahash *)tfm;
27 struct mcryptd_cpu_queue {
28 struct crypto_queue queue;
29 struct work_struct work;
32 struct mcryptd_queue {
33 struct mcryptd_cpu_queue __percpu *cpu_queue;
36 struct mcryptd_instance_ctx {
37 struct crypto_spawn spawn;
38 struct mcryptd_queue *queue;
41 struct mcryptd_hash_ctx {
42 struct crypto_shash *child;
43 struct mcryptd_alg_state *alg_state;
47 /* seq number of request */
49 /* arrival time of request */
50 unsigned long arrival;
55 struct mcryptd_hash_request_ctx {
56 struct list_head waiter;
57 crypto_completion_t complete;
58 struct mcryptd_tag tag;
59 struct crypto_hash_walk walk;
62 struct shash_desc desc;
65 struct mcryptd_ahash *mcryptd_alloc_ahash(const char *alg_name,
67 struct crypto_shash *mcryptd_ahash_child(struct mcryptd_ahash *tfm);
68 struct shash_desc *mcryptd_shash_desc(struct ahash_request *req);
69 void mcryptd_free_ahash(struct mcryptd_ahash *tfm);
70 void mcryptd_flusher(struct work_struct *work);
72 enum mcryptd_req_type {
80 struct mcryptd_alg_cstate {
81 unsigned long next_flush;
82 unsigned next_seq_num;
84 struct delayed_work flush;
86 struct mcryptd_alg_state *alg_state;
89 struct list_head work_list;
90 struct list_head flush_list;
93 struct mcryptd_alg_state {
94 struct mcryptd_alg_cstate __percpu *alg_cstate;
95 unsigned long (*flusher)(struct mcryptd_alg_cstate *cstate);
98 /* return delay in jiffies from current time */
99 static inline unsigned long get_delay(unsigned long t)
103 delay = (long) t - (long) jiffies;
107 return (unsigned long) delay;
110 void mcryptd_arm_flusher(struct mcryptd_alg_cstate *cstate, unsigned long delay);