2 * Software async crypto daemon.
4 * Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au>
6 * Added AEAD support to cryptd.
7 * Authors: Tadeusz Struk (tadeusz.struk@intel.com)
8 * Adrian Hoban <adrian.hoban@intel.com>
9 * Gabriele Paoloni <gabriele.paoloni@intel.com>
10 * Aidan O'Mahony (aidan.o.mahony@intel.com)
11 * Copyright (c) 2010, Intel Corporation.
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the Free
15 * Software Foundation; either version 2 of the License, or (at your option)
20 #include <crypto/internal/hash.h>
21 #include <crypto/internal/aead.h>
22 #include <crypto/internal/skcipher.h>
23 #include <crypto/cryptd.h>
24 #include <crypto/crypto_wq.h>
25 #include <linux/atomic.h>
26 #include <linux/err.h>
27 #include <linux/init.h>
28 #include <linux/kernel.h>
29 #include <linux/list.h>
30 #include <linux/module.h>
31 #include <linux/scatterlist.h>
32 #include <linux/sched.h>
33 #include <linux/slab.h>
35 #define CRYPTD_MAX_CPU_QLEN 1000
37 struct cryptd_cpu_queue
{
38 struct crypto_queue queue
;
39 struct work_struct work
;
43 struct cryptd_cpu_queue __percpu
*cpu_queue
;
46 struct cryptd_instance_ctx
{
47 struct crypto_spawn spawn
;
48 struct cryptd_queue
*queue
;
51 struct skcipherd_instance_ctx
{
52 struct crypto_skcipher_spawn spawn
;
53 struct cryptd_queue
*queue
;
56 struct hashd_instance_ctx
{
57 struct crypto_shash_spawn spawn
;
58 struct cryptd_queue
*queue
;
61 struct aead_instance_ctx
{
62 struct crypto_aead_spawn aead_spawn
;
63 struct cryptd_queue
*queue
;
66 struct cryptd_blkcipher_ctx
{
68 struct crypto_blkcipher
*child
;
71 struct cryptd_blkcipher_request_ctx
{
72 crypto_completion_t complete
;
75 struct cryptd_skcipher_ctx
{
77 struct crypto_skcipher
*child
;
80 struct cryptd_skcipher_request_ctx
{
81 crypto_completion_t complete
;
84 struct cryptd_hash_ctx
{
86 struct crypto_shash
*child
;
89 struct cryptd_hash_request_ctx
{
90 crypto_completion_t complete
;
91 struct shash_desc desc
;
94 struct cryptd_aead_ctx
{
96 struct crypto_aead
*child
;
99 struct cryptd_aead_request_ctx
{
100 crypto_completion_t complete
;
103 static void cryptd_queue_worker(struct work_struct
*work
);
105 static int cryptd_init_queue(struct cryptd_queue
*queue
,
106 unsigned int max_cpu_qlen
)
109 struct cryptd_cpu_queue
*cpu_queue
;
111 queue
->cpu_queue
= alloc_percpu(struct cryptd_cpu_queue
);
112 if (!queue
->cpu_queue
)
114 for_each_possible_cpu(cpu
) {
115 cpu_queue
= per_cpu_ptr(queue
->cpu_queue
, cpu
);
116 crypto_init_queue(&cpu_queue
->queue
, max_cpu_qlen
);
117 INIT_WORK(&cpu_queue
->work
, cryptd_queue_worker
);
122 static void cryptd_fini_queue(struct cryptd_queue
*queue
)
125 struct cryptd_cpu_queue
*cpu_queue
;
127 for_each_possible_cpu(cpu
) {
128 cpu_queue
= per_cpu_ptr(queue
->cpu_queue
, cpu
);
129 BUG_ON(cpu_queue
->queue
.qlen
);
131 free_percpu(queue
->cpu_queue
);
134 static int cryptd_enqueue_request(struct cryptd_queue
*queue
,
135 struct crypto_async_request
*request
)
138 struct cryptd_cpu_queue
*cpu_queue
;
142 cpu_queue
= this_cpu_ptr(queue
->cpu_queue
);
143 err
= crypto_enqueue_request(&cpu_queue
->queue
, request
);
145 refcnt
= crypto_tfm_ctx(request
->tfm
);
150 queue_work_on(cpu
, kcrypto_wq
, &cpu_queue
->work
);
152 if (!atomic_read(refcnt
))
163 /* Called in workqueue context, do one real cryption work (via
164 * req->complete) and reschedule itself if there are more work to
166 static void cryptd_queue_worker(struct work_struct
*work
)
168 struct cryptd_cpu_queue
*cpu_queue
;
169 struct crypto_async_request
*req
, *backlog
;
171 cpu_queue
= container_of(work
, struct cryptd_cpu_queue
, work
);
173 * Only handle one request at a time to avoid hogging crypto workqueue.
174 * preempt_disable/enable is used to prevent being preempted by
175 * cryptd_enqueue_request(). local_bh_disable/enable is used to prevent
176 * cryptd_enqueue_request() being accessed from software interrupts.
180 backlog
= crypto_get_backlog(&cpu_queue
->queue
);
181 req
= crypto_dequeue_request(&cpu_queue
->queue
);
189 backlog
->complete(backlog
, -EINPROGRESS
);
190 req
->complete(req
, 0);
192 if (cpu_queue
->queue
.qlen
)
193 queue_work(kcrypto_wq
, &cpu_queue
->work
);
196 static inline struct cryptd_queue
*cryptd_get_queue(struct crypto_tfm
*tfm
)
198 struct crypto_instance
*inst
= crypto_tfm_alg_instance(tfm
);
199 struct cryptd_instance_ctx
*ictx
= crypto_instance_ctx(inst
);
203 static inline void cryptd_check_internal(struct rtattr
**tb
, u32
*type
,
206 struct crypto_attr_type
*algt
;
208 algt
= crypto_get_attr_type(tb
);
212 *type
|= algt
->type
& CRYPTO_ALG_INTERNAL
;
213 *mask
|= algt
->mask
& CRYPTO_ALG_INTERNAL
;
216 static int cryptd_blkcipher_setkey(struct crypto_ablkcipher
*parent
,
217 const u8
*key
, unsigned int keylen
)
219 struct cryptd_blkcipher_ctx
*ctx
= crypto_ablkcipher_ctx(parent
);
220 struct crypto_blkcipher
*child
= ctx
->child
;
223 crypto_blkcipher_clear_flags(child
, CRYPTO_TFM_REQ_MASK
);
224 crypto_blkcipher_set_flags(child
, crypto_ablkcipher_get_flags(parent
) &
225 CRYPTO_TFM_REQ_MASK
);
226 err
= crypto_blkcipher_setkey(child
, key
, keylen
);
227 crypto_ablkcipher_set_flags(parent
, crypto_blkcipher_get_flags(child
) &
228 CRYPTO_TFM_RES_MASK
);
232 static void cryptd_blkcipher_crypt(struct ablkcipher_request
*req
,
233 struct crypto_blkcipher
*child
,
235 int (*crypt
)(struct blkcipher_desc
*desc
,
236 struct scatterlist
*dst
,
237 struct scatterlist
*src
,
240 struct cryptd_blkcipher_request_ctx
*rctx
;
241 struct cryptd_blkcipher_ctx
*ctx
;
242 struct crypto_ablkcipher
*tfm
;
243 struct blkcipher_desc desc
;
246 rctx
= ablkcipher_request_ctx(req
);
248 if (unlikely(err
== -EINPROGRESS
))
252 desc
.info
= req
->info
;
253 desc
.flags
= CRYPTO_TFM_REQ_MAY_SLEEP
;
255 err
= crypt(&desc
, req
->dst
, req
->src
, req
->nbytes
);
257 req
->base
.complete
= rctx
->complete
;
260 tfm
= crypto_ablkcipher_reqtfm(req
);
261 ctx
= crypto_ablkcipher_ctx(tfm
);
262 refcnt
= atomic_read(&ctx
->refcnt
);
265 rctx
->complete(&req
->base
, err
);
268 if (err
!= -EINPROGRESS
&& refcnt
&& atomic_dec_and_test(&ctx
->refcnt
))
269 crypto_free_ablkcipher(tfm
);
272 static void cryptd_blkcipher_encrypt(struct crypto_async_request
*req
, int err
)
274 struct cryptd_blkcipher_ctx
*ctx
= crypto_tfm_ctx(req
->tfm
);
275 struct crypto_blkcipher
*child
= ctx
->child
;
277 cryptd_blkcipher_crypt(ablkcipher_request_cast(req
), child
, err
,
278 crypto_blkcipher_crt(child
)->encrypt
);
281 static void cryptd_blkcipher_decrypt(struct crypto_async_request
*req
, int err
)
283 struct cryptd_blkcipher_ctx
*ctx
= crypto_tfm_ctx(req
->tfm
);
284 struct crypto_blkcipher
*child
= ctx
->child
;
286 cryptd_blkcipher_crypt(ablkcipher_request_cast(req
), child
, err
,
287 crypto_blkcipher_crt(child
)->decrypt
);
290 static int cryptd_blkcipher_enqueue(struct ablkcipher_request
*req
,
291 crypto_completion_t
compl)
293 struct cryptd_blkcipher_request_ctx
*rctx
= ablkcipher_request_ctx(req
);
294 struct crypto_ablkcipher
*tfm
= crypto_ablkcipher_reqtfm(req
);
295 struct cryptd_queue
*queue
;
297 queue
= cryptd_get_queue(crypto_ablkcipher_tfm(tfm
));
298 rctx
->complete
= req
->base
.complete
;
299 req
->base
.complete
= compl;
301 return cryptd_enqueue_request(queue
, &req
->base
);
304 static int cryptd_blkcipher_encrypt_enqueue(struct ablkcipher_request
*req
)
306 return cryptd_blkcipher_enqueue(req
, cryptd_blkcipher_encrypt
);
309 static int cryptd_blkcipher_decrypt_enqueue(struct ablkcipher_request
*req
)
311 return cryptd_blkcipher_enqueue(req
, cryptd_blkcipher_decrypt
);
314 static int cryptd_blkcipher_init_tfm(struct crypto_tfm
*tfm
)
316 struct crypto_instance
*inst
= crypto_tfm_alg_instance(tfm
);
317 struct cryptd_instance_ctx
*ictx
= crypto_instance_ctx(inst
);
318 struct crypto_spawn
*spawn
= &ictx
->spawn
;
319 struct cryptd_blkcipher_ctx
*ctx
= crypto_tfm_ctx(tfm
);
320 struct crypto_blkcipher
*cipher
;
322 cipher
= crypto_spawn_blkcipher(spawn
);
324 return PTR_ERR(cipher
);
327 tfm
->crt_ablkcipher
.reqsize
=
328 sizeof(struct cryptd_blkcipher_request_ctx
);
332 static void cryptd_blkcipher_exit_tfm(struct crypto_tfm
*tfm
)
334 struct cryptd_blkcipher_ctx
*ctx
= crypto_tfm_ctx(tfm
);
336 crypto_free_blkcipher(ctx
->child
);
339 static int cryptd_init_instance(struct crypto_instance
*inst
,
340 struct crypto_alg
*alg
)
342 if (snprintf(inst
->alg
.cra_driver_name
, CRYPTO_MAX_ALG_NAME
,
344 alg
->cra_driver_name
) >= CRYPTO_MAX_ALG_NAME
)
345 return -ENAMETOOLONG
;
347 memcpy(inst
->alg
.cra_name
, alg
->cra_name
, CRYPTO_MAX_ALG_NAME
);
349 inst
->alg
.cra_priority
= alg
->cra_priority
+ 50;
350 inst
->alg
.cra_blocksize
= alg
->cra_blocksize
;
351 inst
->alg
.cra_alignmask
= alg
->cra_alignmask
;
356 static void *cryptd_alloc_instance(struct crypto_alg
*alg
, unsigned int head
,
360 struct crypto_instance
*inst
;
363 p
= kzalloc(head
+ sizeof(*inst
) + tail
, GFP_KERNEL
);
365 return ERR_PTR(-ENOMEM
);
367 inst
= (void *)(p
+ head
);
369 err
= cryptd_init_instance(inst
, alg
);
382 static int cryptd_create_blkcipher(struct crypto_template
*tmpl
,
384 struct cryptd_queue
*queue
)
386 struct cryptd_instance_ctx
*ctx
;
387 struct crypto_instance
*inst
;
388 struct crypto_alg
*alg
;
389 u32 type
= CRYPTO_ALG_TYPE_BLKCIPHER
;
390 u32 mask
= CRYPTO_ALG_TYPE_MASK
;
393 cryptd_check_internal(tb
, &type
, &mask
);
395 alg
= crypto_get_attr_alg(tb
, type
, mask
);
399 inst
= cryptd_alloc_instance(alg
, 0, sizeof(*ctx
));
404 ctx
= crypto_instance_ctx(inst
);
407 err
= crypto_init_spawn(&ctx
->spawn
, alg
, inst
,
408 CRYPTO_ALG_TYPE_MASK
| CRYPTO_ALG_ASYNC
);
412 type
= CRYPTO_ALG_TYPE_ABLKCIPHER
| CRYPTO_ALG_ASYNC
;
413 if (alg
->cra_flags
& CRYPTO_ALG_INTERNAL
)
414 type
|= CRYPTO_ALG_INTERNAL
;
415 inst
->alg
.cra_flags
= type
;
416 inst
->alg
.cra_type
= &crypto_ablkcipher_type
;
418 inst
->alg
.cra_ablkcipher
.ivsize
= alg
->cra_blkcipher
.ivsize
;
419 inst
->alg
.cra_ablkcipher
.min_keysize
= alg
->cra_blkcipher
.min_keysize
;
420 inst
->alg
.cra_ablkcipher
.max_keysize
= alg
->cra_blkcipher
.max_keysize
;
422 inst
->alg
.cra_ablkcipher
.geniv
= alg
->cra_blkcipher
.geniv
;
424 inst
->alg
.cra_ctxsize
= sizeof(struct cryptd_blkcipher_ctx
);
426 inst
->alg
.cra_init
= cryptd_blkcipher_init_tfm
;
427 inst
->alg
.cra_exit
= cryptd_blkcipher_exit_tfm
;
429 inst
->alg
.cra_ablkcipher
.setkey
= cryptd_blkcipher_setkey
;
430 inst
->alg
.cra_ablkcipher
.encrypt
= cryptd_blkcipher_encrypt_enqueue
;
431 inst
->alg
.cra_ablkcipher
.decrypt
= cryptd_blkcipher_decrypt_enqueue
;
433 err
= crypto_register_instance(tmpl
, inst
);
435 crypto_drop_spawn(&ctx
->spawn
);
445 static int cryptd_skcipher_setkey(struct crypto_skcipher
*parent
,
446 const u8
*key
, unsigned int keylen
)
448 struct cryptd_skcipher_ctx
*ctx
= crypto_skcipher_ctx(parent
);
449 struct crypto_skcipher
*child
= ctx
->child
;
452 crypto_skcipher_clear_flags(child
, CRYPTO_TFM_REQ_MASK
);
453 crypto_skcipher_set_flags(child
, crypto_skcipher_get_flags(parent
) &
454 CRYPTO_TFM_REQ_MASK
);
455 err
= crypto_skcipher_setkey(child
, key
, keylen
);
456 crypto_skcipher_set_flags(parent
, crypto_skcipher_get_flags(child
) &
457 CRYPTO_TFM_RES_MASK
);
461 static void cryptd_skcipher_complete(struct skcipher_request
*req
, int err
)
463 struct crypto_skcipher
*tfm
= crypto_skcipher_reqtfm(req
);
464 struct cryptd_skcipher_ctx
*ctx
= crypto_skcipher_ctx(tfm
);
465 struct cryptd_skcipher_request_ctx
*rctx
= skcipher_request_ctx(req
);
466 int refcnt
= atomic_read(&ctx
->refcnt
);
469 rctx
->complete(&req
->base
, err
);
472 if (err
!= -EINPROGRESS
&& refcnt
&& atomic_dec_and_test(&ctx
->refcnt
))
473 crypto_free_skcipher(tfm
);
476 static void cryptd_skcipher_encrypt(struct crypto_async_request
*base
,
479 struct skcipher_request
*req
= skcipher_request_cast(base
);
480 struct cryptd_skcipher_request_ctx
*rctx
= skcipher_request_ctx(req
);
481 struct crypto_skcipher
*tfm
= crypto_skcipher_reqtfm(req
);
482 struct cryptd_skcipher_ctx
*ctx
= crypto_skcipher_ctx(tfm
);
483 struct crypto_skcipher
*child
= ctx
->child
;
484 SKCIPHER_REQUEST_ON_STACK(subreq
, child
);
486 if (unlikely(err
== -EINPROGRESS
))
489 skcipher_request_set_tfm(subreq
, child
);
490 skcipher_request_set_callback(subreq
, CRYPTO_TFM_REQ_MAY_SLEEP
,
492 skcipher_request_set_crypt(subreq
, req
->src
, req
->dst
, req
->cryptlen
,
495 err
= crypto_skcipher_encrypt(subreq
);
496 skcipher_request_zero(subreq
);
498 req
->base
.complete
= rctx
->complete
;
501 cryptd_skcipher_complete(req
, err
);
504 static void cryptd_skcipher_decrypt(struct crypto_async_request
*base
,
507 struct skcipher_request
*req
= skcipher_request_cast(base
);
508 struct cryptd_skcipher_request_ctx
*rctx
= skcipher_request_ctx(req
);
509 struct crypto_skcipher
*tfm
= crypto_skcipher_reqtfm(req
);
510 struct cryptd_skcipher_ctx
*ctx
= crypto_skcipher_ctx(tfm
);
511 struct crypto_skcipher
*child
= ctx
->child
;
512 SKCIPHER_REQUEST_ON_STACK(subreq
, child
);
514 if (unlikely(err
== -EINPROGRESS
))
517 skcipher_request_set_tfm(subreq
, child
);
518 skcipher_request_set_callback(subreq
, CRYPTO_TFM_REQ_MAY_SLEEP
,
520 skcipher_request_set_crypt(subreq
, req
->src
, req
->dst
, req
->cryptlen
,
523 err
= crypto_skcipher_decrypt(subreq
);
524 skcipher_request_zero(subreq
);
526 req
->base
.complete
= rctx
->complete
;
529 cryptd_skcipher_complete(req
, err
);
532 static int cryptd_skcipher_enqueue(struct skcipher_request
*req
,
533 crypto_completion_t
compl)
535 struct cryptd_skcipher_request_ctx
*rctx
= skcipher_request_ctx(req
);
536 struct crypto_skcipher
*tfm
= crypto_skcipher_reqtfm(req
);
537 struct cryptd_queue
*queue
;
539 queue
= cryptd_get_queue(crypto_skcipher_tfm(tfm
));
540 rctx
->complete
= req
->base
.complete
;
541 req
->base
.complete
= compl;
543 return cryptd_enqueue_request(queue
, &req
->base
);
546 static int cryptd_skcipher_encrypt_enqueue(struct skcipher_request
*req
)
548 return cryptd_skcipher_enqueue(req
, cryptd_skcipher_encrypt
);
551 static int cryptd_skcipher_decrypt_enqueue(struct skcipher_request
*req
)
553 return cryptd_skcipher_enqueue(req
, cryptd_skcipher_decrypt
);
556 static int cryptd_skcipher_init_tfm(struct crypto_skcipher
*tfm
)
558 struct skcipher_instance
*inst
= skcipher_alg_instance(tfm
);
559 struct skcipherd_instance_ctx
*ictx
= skcipher_instance_ctx(inst
);
560 struct crypto_skcipher_spawn
*spawn
= &ictx
->spawn
;
561 struct cryptd_skcipher_ctx
*ctx
= crypto_skcipher_ctx(tfm
);
562 struct crypto_skcipher
*cipher
;
564 cipher
= crypto_spawn_skcipher(spawn
);
566 return PTR_ERR(cipher
);
569 crypto_skcipher_set_reqsize(
570 tfm
, sizeof(struct cryptd_skcipher_request_ctx
));
574 static void cryptd_skcipher_exit_tfm(struct crypto_skcipher
*tfm
)
576 struct cryptd_skcipher_ctx
*ctx
= crypto_skcipher_ctx(tfm
);
578 crypto_free_skcipher(ctx
->child
);
581 static void cryptd_skcipher_free(struct skcipher_instance
*inst
)
583 struct skcipherd_instance_ctx
*ctx
= skcipher_instance_ctx(inst
);
585 crypto_drop_skcipher(&ctx
->spawn
);
589 static int cryptd_create_skcipher(struct crypto_template
*tmpl
,
591 struct cryptd_queue
*queue
)
593 struct skcipherd_instance_ctx
*ctx
;
594 struct skcipher_instance
*inst
;
595 struct skcipher_alg
*alg
;
602 mask
= CRYPTO_ALG_ASYNC
;
604 cryptd_check_internal(tb
, &type
, &mask
);
606 name
= crypto_attr_alg_name(tb
[1]);
608 return PTR_ERR(name
);
610 inst
= kzalloc(sizeof(*inst
) + sizeof(*ctx
), GFP_KERNEL
);
614 ctx
= skcipher_instance_ctx(inst
);
617 crypto_set_skcipher_spawn(&ctx
->spawn
, skcipher_crypto_instance(inst
));
618 err
= crypto_grab_skcipher(&ctx
->spawn
, name
, type
, mask
);
622 alg
= crypto_spawn_skcipher_alg(&ctx
->spawn
);
623 err
= cryptd_init_instance(skcipher_crypto_instance(inst
), &alg
->base
);
625 goto out_drop_skcipher
;
627 inst
->alg
.base
.cra_flags
= CRYPTO_ALG_ASYNC
|
628 (alg
->base
.cra_flags
& CRYPTO_ALG_INTERNAL
);
630 inst
->alg
.ivsize
= crypto_skcipher_alg_ivsize(alg
);
631 inst
->alg
.chunksize
= crypto_skcipher_alg_chunksize(alg
);
632 inst
->alg
.min_keysize
= crypto_skcipher_alg_min_keysize(alg
);
633 inst
->alg
.max_keysize
= crypto_skcipher_alg_max_keysize(alg
);
635 inst
->alg
.base
.cra_ctxsize
= sizeof(struct cryptd_skcipher_ctx
);
637 inst
->alg
.init
= cryptd_skcipher_init_tfm
;
638 inst
->alg
.exit
= cryptd_skcipher_exit_tfm
;
640 inst
->alg
.setkey
= cryptd_skcipher_setkey
;
641 inst
->alg
.encrypt
= cryptd_skcipher_encrypt_enqueue
;
642 inst
->alg
.decrypt
= cryptd_skcipher_decrypt_enqueue
;
644 inst
->free
= cryptd_skcipher_free
;
646 err
= skcipher_register_instance(tmpl
, inst
);
649 crypto_drop_skcipher(&ctx
->spawn
);
656 static int cryptd_hash_init_tfm(struct crypto_tfm
*tfm
)
658 struct crypto_instance
*inst
= crypto_tfm_alg_instance(tfm
);
659 struct hashd_instance_ctx
*ictx
= crypto_instance_ctx(inst
);
660 struct crypto_shash_spawn
*spawn
= &ictx
->spawn
;
661 struct cryptd_hash_ctx
*ctx
= crypto_tfm_ctx(tfm
);
662 struct crypto_shash
*hash
;
664 hash
= crypto_spawn_shash(spawn
);
666 return PTR_ERR(hash
);
669 crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm
),
670 sizeof(struct cryptd_hash_request_ctx
) +
671 crypto_shash_descsize(hash
));
675 static void cryptd_hash_exit_tfm(struct crypto_tfm
*tfm
)
677 struct cryptd_hash_ctx
*ctx
= crypto_tfm_ctx(tfm
);
679 crypto_free_shash(ctx
->child
);
682 static int cryptd_hash_setkey(struct crypto_ahash
*parent
,
683 const u8
*key
, unsigned int keylen
)
685 struct cryptd_hash_ctx
*ctx
= crypto_ahash_ctx(parent
);
686 struct crypto_shash
*child
= ctx
->child
;
689 crypto_shash_clear_flags(child
, CRYPTO_TFM_REQ_MASK
);
690 crypto_shash_set_flags(child
, crypto_ahash_get_flags(parent
) &
691 CRYPTO_TFM_REQ_MASK
);
692 err
= crypto_shash_setkey(child
, key
, keylen
);
693 crypto_ahash_set_flags(parent
, crypto_shash_get_flags(child
) &
694 CRYPTO_TFM_RES_MASK
);
698 static int cryptd_hash_enqueue(struct ahash_request
*req
,
699 crypto_completion_t
compl)
701 struct cryptd_hash_request_ctx
*rctx
= ahash_request_ctx(req
);
702 struct crypto_ahash
*tfm
= crypto_ahash_reqtfm(req
);
703 struct cryptd_queue
*queue
=
704 cryptd_get_queue(crypto_ahash_tfm(tfm
));
706 rctx
->complete
= req
->base
.complete
;
707 req
->base
.complete
= compl;
709 return cryptd_enqueue_request(queue
, &req
->base
);
712 static void cryptd_hash_complete(struct ahash_request
*req
, int err
)
714 struct crypto_ahash
*tfm
= crypto_ahash_reqtfm(req
);
715 struct cryptd_hash_ctx
*ctx
= crypto_ahash_ctx(tfm
);
716 struct cryptd_hash_request_ctx
*rctx
= ahash_request_ctx(req
);
717 int refcnt
= atomic_read(&ctx
->refcnt
);
720 rctx
->complete(&req
->base
, err
);
723 if (err
!= -EINPROGRESS
&& refcnt
&& atomic_dec_and_test(&ctx
->refcnt
))
724 crypto_free_ahash(tfm
);
727 static void cryptd_hash_init(struct crypto_async_request
*req_async
, int err
)
729 struct cryptd_hash_ctx
*ctx
= crypto_tfm_ctx(req_async
->tfm
);
730 struct crypto_shash
*child
= ctx
->child
;
731 struct ahash_request
*req
= ahash_request_cast(req_async
);
732 struct cryptd_hash_request_ctx
*rctx
= ahash_request_ctx(req
);
733 struct shash_desc
*desc
= &rctx
->desc
;
735 if (unlikely(err
== -EINPROGRESS
))
739 desc
->flags
= CRYPTO_TFM_REQ_MAY_SLEEP
;
741 err
= crypto_shash_init(desc
);
743 req
->base
.complete
= rctx
->complete
;
746 cryptd_hash_complete(req
, err
);
749 static int cryptd_hash_init_enqueue(struct ahash_request
*req
)
751 return cryptd_hash_enqueue(req
, cryptd_hash_init
);
754 static void cryptd_hash_update(struct crypto_async_request
*req_async
, int err
)
756 struct ahash_request
*req
= ahash_request_cast(req_async
);
757 struct cryptd_hash_request_ctx
*rctx
;
759 rctx
= ahash_request_ctx(req
);
761 if (unlikely(err
== -EINPROGRESS
))
764 err
= shash_ahash_update(req
, &rctx
->desc
);
766 req
->base
.complete
= rctx
->complete
;
769 cryptd_hash_complete(req
, err
);
772 static int cryptd_hash_update_enqueue(struct ahash_request
*req
)
774 return cryptd_hash_enqueue(req
, cryptd_hash_update
);
777 static void cryptd_hash_final(struct crypto_async_request
*req_async
, int err
)
779 struct ahash_request
*req
= ahash_request_cast(req_async
);
780 struct cryptd_hash_request_ctx
*rctx
= ahash_request_ctx(req
);
782 if (unlikely(err
== -EINPROGRESS
))
785 err
= crypto_shash_final(&rctx
->desc
, req
->result
);
787 req
->base
.complete
= rctx
->complete
;
790 cryptd_hash_complete(req
, err
);
793 static int cryptd_hash_final_enqueue(struct ahash_request
*req
)
795 return cryptd_hash_enqueue(req
, cryptd_hash_final
);
798 static void cryptd_hash_finup(struct crypto_async_request
*req_async
, int err
)
800 struct ahash_request
*req
= ahash_request_cast(req_async
);
801 struct cryptd_hash_request_ctx
*rctx
= ahash_request_ctx(req
);
803 if (unlikely(err
== -EINPROGRESS
))
806 err
= shash_ahash_finup(req
, &rctx
->desc
);
808 req
->base
.complete
= rctx
->complete
;
811 cryptd_hash_complete(req
, err
);
814 static int cryptd_hash_finup_enqueue(struct ahash_request
*req
)
816 return cryptd_hash_enqueue(req
, cryptd_hash_finup
);
819 static void cryptd_hash_digest(struct crypto_async_request
*req_async
, int err
)
821 struct cryptd_hash_ctx
*ctx
= crypto_tfm_ctx(req_async
->tfm
);
822 struct crypto_shash
*child
= ctx
->child
;
823 struct ahash_request
*req
= ahash_request_cast(req_async
);
824 struct cryptd_hash_request_ctx
*rctx
= ahash_request_ctx(req
);
825 struct shash_desc
*desc
= &rctx
->desc
;
827 if (unlikely(err
== -EINPROGRESS
))
831 desc
->flags
= CRYPTO_TFM_REQ_MAY_SLEEP
;
833 err
= shash_ahash_digest(req
, desc
);
835 req
->base
.complete
= rctx
->complete
;
838 cryptd_hash_complete(req
, err
);
841 static int cryptd_hash_digest_enqueue(struct ahash_request
*req
)
843 return cryptd_hash_enqueue(req
, cryptd_hash_digest
);
846 static int cryptd_hash_export(struct ahash_request
*req
, void *out
)
848 struct cryptd_hash_request_ctx
*rctx
= ahash_request_ctx(req
);
850 return crypto_shash_export(&rctx
->desc
, out
);
853 static int cryptd_hash_import(struct ahash_request
*req
, const void *in
)
855 struct crypto_ahash
*tfm
= crypto_ahash_reqtfm(req
);
856 struct cryptd_hash_ctx
*ctx
= crypto_ahash_ctx(tfm
);
857 struct shash_desc
*desc
= cryptd_shash_desc(req
);
859 desc
->tfm
= ctx
->child
;
860 desc
->flags
= req
->base
.flags
;
862 return crypto_shash_import(desc
, in
);
865 static int cryptd_create_hash(struct crypto_template
*tmpl
, struct rtattr
**tb
,
866 struct cryptd_queue
*queue
)
868 struct hashd_instance_ctx
*ctx
;
869 struct ahash_instance
*inst
;
870 struct shash_alg
*salg
;
871 struct crypto_alg
*alg
;
876 cryptd_check_internal(tb
, &type
, &mask
);
878 salg
= shash_attr_alg(tb
[1], type
, mask
);
880 return PTR_ERR(salg
);
883 inst
= cryptd_alloc_instance(alg
, ahash_instance_headroom(),
889 ctx
= ahash_instance_ctx(inst
);
892 err
= crypto_init_shash_spawn(&ctx
->spawn
, salg
,
893 ahash_crypto_instance(inst
));
897 inst
->alg
.halg
.base
.cra_flags
= CRYPTO_ALG_ASYNC
|
898 (alg
->cra_flags
& (CRYPTO_ALG_INTERNAL
|
899 CRYPTO_ALG_OPTIONAL_KEY
));
901 inst
->alg
.halg
.digestsize
= salg
->digestsize
;
902 inst
->alg
.halg
.statesize
= salg
->statesize
;
903 inst
->alg
.halg
.base
.cra_ctxsize
= sizeof(struct cryptd_hash_ctx
);
905 inst
->alg
.halg
.base
.cra_init
= cryptd_hash_init_tfm
;
906 inst
->alg
.halg
.base
.cra_exit
= cryptd_hash_exit_tfm
;
908 inst
->alg
.init
= cryptd_hash_init_enqueue
;
909 inst
->alg
.update
= cryptd_hash_update_enqueue
;
910 inst
->alg
.final
= cryptd_hash_final_enqueue
;
911 inst
->alg
.finup
= cryptd_hash_finup_enqueue
;
912 inst
->alg
.export
= cryptd_hash_export
;
913 inst
->alg
.import
= cryptd_hash_import
;
914 if (crypto_shash_alg_has_setkey(salg
))
915 inst
->alg
.setkey
= cryptd_hash_setkey
;
916 inst
->alg
.digest
= cryptd_hash_digest_enqueue
;
918 err
= ahash_register_instance(tmpl
, inst
);
920 crypto_drop_shash(&ctx
->spawn
);
930 static int cryptd_aead_setkey(struct crypto_aead
*parent
,
931 const u8
*key
, unsigned int keylen
)
933 struct cryptd_aead_ctx
*ctx
= crypto_aead_ctx(parent
);
934 struct crypto_aead
*child
= ctx
->child
;
936 return crypto_aead_setkey(child
, key
, keylen
);
939 static int cryptd_aead_setauthsize(struct crypto_aead
*parent
,
940 unsigned int authsize
)
942 struct cryptd_aead_ctx
*ctx
= crypto_aead_ctx(parent
);
943 struct crypto_aead
*child
= ctx
->child
;
945 return crypto_aead_setauthsize(child
, authsize
);
948 static void cryptd_aead_crypt(struct aead_request
*req
,
949 struct crypto_aead
*child
,
951 int (*crypt
)(struct aead_request
*req
))
953 struct cryptd_aead_request_ctx
*rctx
;
954 struct cryptd_aead_ctx
*ctx
;
955 crypto_completion_t
compl;
956 struct crypto_aead
*tfm
;
959 rctx
= aead_request_ctx(req
);
960 compl = rctx
->complete
;
962 tfm
= crypto_aead_reqtfm(req
);
964 if (unlikely(err
== -EINPROGRESS
))
966 aead_request_set_tfm(req
, child
);
970 ctx
= crypto_aead_ctx(tfm
);
971 refcnt
= atomic_read(&ctx
->refcnt
);
974 compl(&req
->base
, err
);
977 if (err
!= -EINPROGRESS
&& refcnt
&& atomic_dec_and_test(&ctx
->refcnt
))
978 crypto_free_aead(tfm
);
981 static void cryptd_aead_encrypt(struct crypto_async_request
*areq
, int err
)
983 struct cryptd_aead_ctx
*ctx
= crypto_tfm_ctx(areq
->tfm
);
984 struct crypto_aead
*child
= ctx
->child
;
985 struct aead_request
*req
;
987 req
= container_of(areq
, struct aead_request
, base
);
988 cryptd_aead_crypt(req
, child
, err
, crypto_aead_alg(child
)->encrypt
);
991 static void cryptd_aead_decrypt(struct crypto_async_request
*areq
, int err
)
993 struct cryptd_aead_ctx
*ctx
= crypto_tfm_ctx(areq
->tfm
);
994 struct crypto_aead
*child
= ctx
->child
;
995 struct aead_request
*req
;
997 req
= container_of(areq
, struct aead_request
, base
);
998 cryptd_aead_crypt(req
, child
, err
, crypto_aead_alg(child
)->decrypt
);
1001 static int cryptd_aead_enqueue(struct aead_request
*req
,
1002 crypto_completion_t
compl)
1004 struct cryptd_aead_request_ctx
*rctx
= aead_request_ctx(req
);
1005 struct crypto_aead
*tfm
= crypto_aead_reqtfm(req
);
1006 struct cryptd_queue
*queue
= cryptd_get_queue(crypto_aead_tfm(tfm
));
1008 rctx
->complete
= req
->base
.complete
;
1009 req
->base
.complete
= compl;
1010 return cryptd_enqueue_request(queue
, &req
->base
);
1013 static int cryptd_aead_encrypt_enqueue(struct aead_request
*req
)
1015 return cryptd_aead_enqueue(req
, cryptd_aead_encrypt
);
1018 static int cryptd_aead_decrypt_enqueue(struct aead_request
*req
)
1020 return cryptd_aead_enqueue(req
, cryptd_aead_decrypt
);
1023 static int cryptd_aead_init_tfm(struct crypto_aead
*tfm
)
1025 struct aead_instance
*inst
= aead_alg_instance(tfm
);
1026 struct aead_instance_ctx
*ictx
= aead_instance_ctx(inst
);
1027 struct crypto_aead_spawn
*spawn
= &ictx
->aead_spawn
;
1028 struct cryptd_aead_ctx
*ctx
= crypto_aead_ctx(tfm
);
1029 struct crypto_aead
*cipher
;
1031 cipher
= crypto_spawn_aead(spawn
);
1033 return PTR_ERR(cipher
);
1035 ctx
->child
= cipher
;
1036 crypto_aead_set_reqsize(
1037 tfm
, max((unsigned)sizeof(struct cryptd_aead_request_ctx
),
1038 crypto_aead_reqsize(cipher
)));
1042 static void cryptd_aead_exit_tfm(struct crypto_aead
*tfm
)
1044 struct cryptd_aead_ctx
*ctx
= crypto_aead_ctx(tfm
);
1045 crypto_free_aead(ctx
->child
);
1048 static int cryptd_create_aead(struct crypto_template
*tmpl
,
1050 struct cryptd_queue
*queue
)
1052 struct aead_instance_ctx
*ctx
;
1053 struct aead_instance
*inst
;
1054 struct aead_alg
*alg
;
1057 u32 mask
= CRYPTO_ALG_ASYNC
;
1060 cryptd_check_internal(tb
, &type
, &mask
);
1062 name
= crypto_attr_alg_name(tb
[1]);
1064 return PTR_ERR(name
);
1066 inst
= kzalloc(sizeof(*inst
) + sizeof(*ctx
), GFP_KERNEL
);
1070 ctx
= aead_instance_ctx(inst
);
1073 crypto_set_aead_spawn(&ctx
->aead_spawn
, aead_crypto_instance(inst
));
1074 err
= crypto_grab_aead(&ctx
->aead_spawn
, name
, type
, mask
);
1078 alg
= crypto_spawn_aead_alg(&ctx
->aead_spawn
);
1079 err
= cryptd_init_instance(aead_crypto_instance(inst
), &alg
->base
);
1083 inst
->alg
.base
.cra_flags
= CRYPTO_ALG_ASYNC
|
1084 (alg
->base
.cra_flags
& CRYPTO_ALG_INTERNAL
);
1085 inst
->alg
.base
.cra_ctxsize
= sizeof(struct cryptd_aead_ctx
);
1087 inst
->alg
.ivsize
= crypto_aead_alg_ivsize(alg
);
1088 inst
->alg
.maxauthsize
= crypto_aead_alg_maxauthsize(alg
);
1090 inst
->alg
.init
= cryptd_aead_init_tfm
;
1091 inst
->alg
.exit
= cryptd_aead_exit_tfm
;
1092 inst
->alg
.setkey
= cryptd_aead_setkey
;
1093 inst
->alg
.setauthsize
= cryptd_aead_setauthsize
;
1094 inst
->alg
.encrypt
= cryptd_aead_encrypt_enqueue
;
1095 inst
->alg
.decrypt
= cryptd_aead_decrypt_enqueue
;
1097 err
= aead_register_instance(tmpl
, inst
);
1100 crypto_drop_aead(&ctx
->aead_spawn
);
1107 static struct cryptd_queue queue
;
1109 static int cryptd_create(struct crypto_template
*tmpl
, struct rtattr
**tb
)
1111 struct crypto_attr_type
*algt
;
1113 algt
= crypto_get_attr_type(tb
);
1115 return PTR_ERR(algt
);
1117 switch (algt
->type
& algt
->mask
& CRYPTO_ALG_TYPE_MASK
) {
1118 case CRYPTO_ALG_TYPE_BLKCIPHER
:
1119 if ((algt
->type
& CRYPTO_ALG_TYPE_MASK
) ==
1120 CRYPTO_ALG_TYPE_BLKCIPHER
)
1121 return cryptd_create_blkcipher(tmpl
, tb
, &queue
);
1123 return cryptd_create_skcipher(tmpl
, tb
, &queue
);
1124 case CRYPTO_ALG_TYPE_DIGEST
:
1125 return cryptd_create_hash(tmpl
, tb
, &queue
);
1126 case CRYPTO_ALG_TYPE_AEAD
:
1127 return cryptd_create_aead(tmpl
, tb
, &queue
);
1133 static void cryptd_free(struct crypto_instance
*inst
)
1135 struct cryptd_instance_ctx
*ctx
= crypto_instance_ctx(inst
);
1136 struct hashd_instance_ctx
*hctx
= crypto_instance_ctx(inst
);
1137 struct aead_instance_ctx
*aead_ctx
= crypto_instance_ctx(inst
);
1139 switch (inst
->alg
.cra_flags
& CRYPTO_ALG_TYPE_MASK
) {
1140 case CRYPTO_ALG_TYPE_AHASH
:
1141 crypto_drop_shash(&hctx
->spawn
);
1142 kfree(ahash_instance(inst
));
1144 case CRYPTO_ALG_TYPE_AEAD
:
1145 crypto_drop_aead(&aead_ctx
->aead_spawn
);
1146 kfree(aead_instance(inst
));
1149 crypto_drop_spawn(&ctx
->spawn
);
1154 static struct crypto_template cryptd_tmpl
= {
1156 .create
= cryptd_create
,
1157 .free
= cryptd_free
,
1158 .module
= THIS_MODULE
,
1161 struct cryptd_ablkcipher
*cryptd_alloc_ablkcipher(const char *alg_name
,
1164 char cryptd_alg_name
[CRYPTO_MAX_ALG_NAME
];
1165 struct cryptd_blkcipher_ctx
*ctx
;
1166 struct crypto_tfm
*tfm
;
1168 if (snprintf(cryptd_alg_name
, CRYPTO_MAX_ALG_NAME
,
1169 "cryptd(%s)", alg_name
) >= CRYPTO_MAX_ALG_NAME
)
1170 return ERR_PTR(-EINVAL
);
1171 type
= crypto_skcipher_type(type
);
1172 mask
&= ~CRYPTO_ALG_TYPE_MASK
;
1173 mask
|= (CRYPTO_ALG_GENIV
| CRYPTO_ALG_TYPE_BLKCIPHER_MASK
);
1174 tfm
= crypto_alloc_base(cryptd_alg_name
, type
, mask
);
1176 return ERR_CAST(tfm
);
1177 if (tfm
->__crt_alg
->cra_module
!= THIS_MODULE
) {
1178 crypto_free_tfm(tfm
);
1179 return ERR_PTR(-EINVAL
);
1182 ctx
= crypto_tfm_ctx(tfm
);
1183 atomic_set(&ctx
->refcnt
, 1);
1185 return __cryptd_ablkcipher_cast(__crypto_ablkcipher_cast(tfm
));
1187 EXPORT_SYMBOL_GPL(cryptd_alloc_ablkcipher
);
1189 struct crypto_blkcipher
*cryptd_ablkcipher_child(struct cryptd_ablkcipher
*tfm
)
1191 struct cryptd_blkcipher_ctx
*ctx
= crypto_ablkcipher_ctx(&tfm
->base
);
1194 EXPORT_SYMBOL_GPL(cryptd_ablkcipher_child
);
1196 bool cryptd_ablkcipher_queued(struct cryptd_ablkcipher
*tfm
)
1198 struct cryptd_blkcipher_ctx
*ctx
= crypto_ablkcipher_ctx(&tfm
->base
);
1200 return atomic_read(&ctx
->refcnt
) - 1;
1202 EXPORT_SYMBOL_GPL(cryptd_ablkcipher_queued
);
1204 void cryptd_free_ablkcipher(struct cryptd_ablkcipher
*tfm
)
1206 struct cryptd_blkcipher_ctx
*ctx
= crypto_ablkcipher_ctx(&tfm
->base
);
1208 if (atomic_dec_and_test(&ctx
->refcnt
))
1209 crypto_free_ablkcipher(&tfm
->base
);
1211 EXPORT_SYMBOL_GPL(cryptd_free_ablkcipher
);
1213 struct cryptd_skcipher
*cryptd_alloc_skcipher(const char *alg_name
,
1216 char cryptd_alg_name
[CRYPTO_MAX_ALG_NAME
];
1217 struct cryptd_skcipher_ctx
*ctx
;
1218 struct crypto_skcipher
*tfm
;
1220 if (snprintf(cryptd_alg_name
, CRYPTO_MAX_ALG_NAME
,
1221 "cryptd(%s)", alg_name
) >= CRYPTO_MAX_ALG_NAME
)
1222 return ERR_PTR(-EINVAL
);
1224 tfm
= crypto_alloc_skcipher(cryptd_alg_name
, type
, mask
);
1226 return ERR_CAST(tfm
);
1228 if (tfm
->base
.__crt_alg
->cra_module
!= THIS_MODULE
) {
1229 crypto_free_skcipher(tfm
);
1230 return ERR_PTR(-EINVAL
);
1233 ctx
= crypto_skcipher_ctx(tfm
);
1234 atomic_set(&ctx
->refcnt
, 1);
1236 return container_of(tfm
, struct cryptd_skcipher
, base
);
1238 EXPORT_SYMBOL_GPL(cryptd_alloc_skcipher
);
1240 struct crypto_skcipher
*cryptd_skcipher_child(struct cryptd_skcipher
*tfm
)
1242 struct cryptd_skcipher_ctx
*ctx
= crypto_skcipher_ctx(&tfm
->base
);
1246 EXPORT_SYMBOL_GPL(cryptd_skcipher_child
);
1248 bool cryptd_skcipher_queued(struct cryptd_skcipher
*tfm
)
1250 struct cryptd_skcipher_ctx
*ctx
= crypto_skcipher_ctx(&tfm
->base
);
1252 return atomic_read(&ctx
->refcnt
) - 1;
1254 EXPORT_SYMBOL_GPL(cryptd_skcipher_queued
);
1256 void cryptd_free_skcipher(struct cryptd_skcipher
*tfm
)
1258 struct cryptd_skcipher_ctx
*ctx
= crypto_skcipher_ctx(&tfm
->base
);
1260 if (atomic_dec_and_test(&ctx
->refcnt
))
1261 crypto_free_skcipher(&tfm
->base
);
1263 EXPORT_SYMBOL_GPL(cryptd_free_skcipher
);
1265 struct cryptd_ahash
*cryptd_alloc_ahash(const char *alg_name
,
1268 char cryptd_alg_name
[CRYPTO_MAX_ALG_NAME
];
1269 struct cryptd_hash_ctx
*ctx
;
1270 struct crypto_ahash
*tfm
;
1272 if (snprintf(cryptd_alg_name
, CRYPTO_MAX_ALG_NAME
,
1273 "cryptd(%s)", alg_name
) >= CRYPTO_MAX_ALG_NAME
)
1274 return ERR_PTR(-EINVAL
);
1275 tfm
= crypto_alloc_ahash(cryptd_alg_name
, type
, mask
);
1277 return ERR_CAST(tfm
);
1278 if (tfm
->base
.__crt_alg
->cra_module
!= THIS_MODULE
) {
1279 crypto_free_ahash(tfm
);
1280 return ERR_PTR(-EINVAL
);
1283 ctx
= crypto_ahash_ctx(tfm
);
1284 atomic_set(&ctx
->refcnt
, 1);
1286 return __cryptd_ahash_cast(tfm
);
1288 EXPORT_SYMBOL_GPL(cryptd_alloc_ahash
);
1290 struct crypto_shash
*cryptd_ahash_child(struct cryptd_ahash
*tfm
)
1292 struct cryptd_hash_ctx
*ctx
= crypto_ahash_ctx(&tfm
->base
);
1296 EXPORT_SYMBOL_GPL(cryptd_ahash_child
);
1298 struct shash_desc
*cryptd_shash_desc(struct ahash_request
*req
)
1300 struct cryptd_hash_request_ctx
*rctx
= ahash_request_ctx(req
);
1303 EXPORT_SYMBOL_GPL(cryptd_shash_desc
);
1305 bool cryptd_ahash_queued(struct cryptd_ahash
*tfm
)
1307 struct cryptd_hash_ctx
*ctx
= crypto_ahash_ctx(&tfm
->base
);
1309 return atomic_read(&ctx
->refcnt
) - 1;
1311 EXPORT_SYMBOL_GPL(cryptd_ahash_queued
);
1313 void cryptd_free_ahash(struct cryptd_ahash
*tfm
)
1315 struct cryptd_hash_ctx
*ctx
= crypto_ahash_ctx(&tfm
->base
);
1317 if (atomic_dec_and_test(&ctx
->refcnt
))
1318 crypto_free_ahash(&tfm
->base
);
1320 EXPORT_SYMBOL_GPL(cryptd_free_ahash
);
1322 struct cryptd_aead
*cryptd_alloc_aead(const char *alg_name
,
1325 char cryptd_alg_name
[CRYPTO_MAX_ALG_NAME
];
1326 struct cryptd_aead_ctx
*ctx
;
1327 struct crypto_aead
*tfm
;
1329 if (snprintf(cryptd_alg_name
, CRYPTO_MAX_ALG_NAME
,
1330 "cryptd(%s)", alg_name
) >= CRYPTO_MAX_ALG_NAME
)
1331 return ERR_PTR(-EINVAL
);
1332 tfm
= crypto_alloc_aead(cryptd_alg_name
, type
, mask
);
1334 return ERR_CAST(tfm
);
1335 if (tfm
->base
.__crt_alg
->cra_module
!= THIS_MODULE
) {
1336 crypto_free_aead(tfm
);
1337 return ERR_PTR(-EINVAL
);
1340 ctx
= crypto_aead_ctx(tfm
);
1341 atomic_set(&ctx
->refcnt
, 1);
1343 return __cryptd_aead_cast(tfm
);
1345 EXPORT_SYMBOL_GPL(cryptd_alloc_aead
);
1347 struct crypto_aead
*cryptd_aead_child(struct cryptd_aead
*tfm
)
1349 struct cryptd_aead_ctx
*ctx
;
1350 ctx
= crypto_aead_ctx(&tfm
->base
);
1353 EXPORT_SYMBOL_GPL(cryptd_aead_child
);
1355 bool cryptd_aead_queued(struct cryptd_aead
*tfm
)
1357 struct cryptd_aead_ctx
*ctx
= crypto_aead_ctx(&tfm
->base
);
1359 return atomic_read(&ctx
->refcnt
) - 1;
1361 EXPORT_SYMBOL_GPL(cryptd_aead_queued
);
1363 void cryptd_free_aead(struct cryptd_aead
*tfm
)
1365 struct cryptd_aead_ctx
*ctx
= crypto_aead_ctx(&tfm
->base
);
1367 if (atomic_dec_and_test(&ctx
->refcnt
))
1368 crypto_free_aead(&tfm
->base
);
1370 EXPORT_SYMBOL_GPL(cryptd_free_aead
);
1372 static int __init
cryptd_init(void)
1376 err
= cryptd_init_queue(&queue
, CRYPTD_MAX_CPU_QLEN
);
1380 err
= crypto_register_template(&cryptd_tmpl
);
1382 cryptd_fini_queue(&queue
);
1387 static void __exit
cryptd_exit(void)
1389 cryptd_fini_queue(&queue
);
1390 crypto_unregister_template(&cryptd_tmpl
);
1393 subsys_initcall(cryptd_init
);
1394 module_exit(cryptd_exit
);
1396 MODULE_LICENSE("GPL");
1397 MODULE_DESCRIPTION("Software async crypto daemon");
1398 MODULE_ALIAS_CRYPTO("cryptd");