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Commit | Line | Data |
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124b53d0 HX |
1 | /* |
2 | * Software async crypto daemon. | |
3 | * | |
4 | * Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au> | |
5 | * | |
298c926c AH |
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. | |
12 | * | |
124b53d0 HX |
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) | |
16 | * any later version. | |
17 | * | |
18 | */ | |
19 | ||
20 | #include <crypto/algapi.h> | |
18e33e6d | 21 | #include <crypto/internal/hash.h> |
298c926c | 22 | #include <crypto/internal/aead.h> |
1cac2cbc | 23 | #include <crypto/cryptd.h> |
254eff77 | 24 | #include <crypto/crypto_wq.h> |
124b53d0 HX |
25 | #include <linux/err.h> |
26 | #include <linux/init.h> | |
27 | #include <linux/kernel.h> | |
124b53d0 HX |
28 | #include <linux/list.h> |
29 | #include <linux/module.h> | |
124b53d0 HX |
30 | #include <linux/scatterlist.h> |
31 | #include <linux/sched.h> | |
32 | #include <linux/slab.h> | |
124b53d0 | 33 | |
254eff77 | 34 | #define CRYPTD_MAX_CPU_QLEN 100 |
124b53d0 | 35 | |
254eff77 | 36 | struct cryptd_cpu_queue { |
124b53d0 | 37 | struct crypto_queue queue; |
254eff77 HY |
38 | struct work_struct work; |
39 | }; | |
40 | ||
41 | struct cryptd_queue { | |
a29d8b8e | 42 | struct cryptd_cpu_queue __percpu *cpu_queue; |
124b53d0 HX |
43 | }; |
44 | ||
45 | struct cryptd_instance_ctx { | |
46 | struct crypto_spawn spawn; | |
254eff77 | 47 | struct cryptd_queue *queue; |
124b53d0 HX |
48 | }; |
49 | ||
46309d89 HX |
50 | struct hashd_instance_ctx { |
51 | struct crypto_shash_spawn spawn; | |
52 | struct cryptd_queue *queue; | |
53 | }; | |
54 | ||
298c926c AH |
55 | struct aead_instance_ctx { |
56 | struct crypto_aead_spawn aead_spawn; | |
57 | struct cryptd_queue *queue; | |
58 | }; | |
59 | ||
124b53d0 HX |
60 | struct cryptd_blkcipher_ctx { |
61 | struct crypto_blkcipher *child; | |
62 | }; | |
63 | ||
64 | struct cryptd_blkcipher_request_ctx { | |
65 | crypto_completion_t complete; | |
66 | }; | |
67 | ||
b8a28251 | 68 | struct cryptd_hash_ctx { |
46309d89 | 69 | struct crypto_shash *child; |
b8a28251 LH |
70 | }; |
71 | ||
72 | struct cryptd_hash_request_ctx { | |
73 | crypto_completion_t complete; | |
46309d89 | 74 | struct shash_desc desc; |
b8a28251 | 75 | }; |
124b53d0 | 76 | |
298c926c AH |
77 | struct cryptd_aead_ctx { |
78 | struct crypto_aead *child; | |
79 | }; | |
80 | ||
81 | struct cryptd_aead_request_ctx { | |
82 | crypto_completion_t complete; | |
83 | }; | |
84 | ||
254eff77 HY |
85 | static void cryptd_queue_worker(struct work_struct *work); |
86 | ||
87 | static int cryptd_init_queue(struct cryptd_queue *queue, | |
88 | unsigned int max_cpu_qlen) | |
89 | { | |
90 | int cpu; | |
91 | struct cryptd_cpu_queue *cpu_queue; | |
92 | ||
93 | queue->cpu_queue = alloc_percpu(struct cryptd_cpu_queue); | |
94 | if (!queue->cpu_queue) | |
95 | return -ENOMEM; | |
96 | for_each_possible_cpu(cpu) { | |
97 | cpu_queue = per_cpu_ptr(queue->cpu_queue, cpu); | |
98 | crypto_init_queue(&cpu_queue->queue, max_cpu_qlen); | |
99 | INIT_WORK(&cpu_queue->work, cryptd_queue_worker); | |
100 | } | |
101 | return 0; | |
102 | } | |
103 | ||
104 | static void cryptd_fini_queue(struct cryptd_queue *queue) | |
105 | { | |
106 | int cpu; | |
107 | struct cryptd_cpu_queue *cpu_queue; | |
108 | ||
109 | for_each_possible_cpu(cpu) { | |
110 | cpu_queue = per_cpu_ptr(queue->cpu_queue, cpu); | |
111 | BUG_ON(cpu_queue->queue.qlen); | |
112 | } | |
113 | free_percpu(queue->cpu_queue); | |
114 | } | |
115 | ||
116 | static int cryptd_enqueue_request(struct cryptd_queue *queue, | |
117 | struct crypto_async_request *request) | |
118 | { | |
119 | int cpu, err; | |
120 | struct cryptd_cpu_queue *cpu_queue; | |
121 | ||
122 | cpu = get_cpu(); | |
0b44f486 | 123 | cpu_queue = this_cpu_ptr(queue->cpu_queue); |
254eff77 HY |
124 | err = crypto_enqueue_request(&cpu_queue->queue, request); |
125 | queue_work_on(cpu, kcrypto_wq, &cpu_queue->work); | |
126 | put_cpu(); | |
127 | ||
128 | return err; | |
129 | } | |
130 | ||
131 | /* Called in workqueue context, do one real cryption work (via | |
132 | * req->complete) and reschedule itself if there are more work to | |
133 | * do. */ | |
134 | static void cryptd_queue_worker(struct work_struct *work) | |
135 | { | |
136 | struct cryptd_cpu_queue *cpu_queue; | |
137 | struct crypto_async_request *req, *backlog; | |
138 | ||
139 | cpu_queue = container_of(work, struct cryptd_cpu_queue, work); | |
9efade1b JK |
140 | /* |
141 | * Only handle one request at a time to avoid hogging crypto workqueue. | |
142 | * preempt_disable/enable is used to prevent being preempted by | |
143 | * cryptd_enqueue_request(). local_bh_disable/enable is used to prevent | |
144 | * cryptd_enqueue_request() being accessed from software interrupts. | |
145 | */ | |
146 | local_bh_disable(); | |
254eff77 HY |
147 | preempt_disable(); |
148 | backlog = crypto_get_backlog(&cpu_queue->queue); | |
149 | req = crypto_dequeue_request(&cpu_queue->queue); | |
150 | preempt_enable(); | |
9efade1b | 151 | local_bh_enable(); |
254eff77 HY |
152 | |
153 | if (!req) | |
154 | return; | |
155 | ||
156 | if (backlog) | |
157 | backlog->complete(backlog, -EINPROGRESS); | |
158 | req->complete(req, 0); | |
159 | ||
160 | if (cpu_queue->queue.qlen) | |
161 | queue_work(kcrypto_wq, &cpu_queue->work); | |
162 | } | |
163 | ||
164 | static inline struct cryptd_queue *cryptd_get_queue(struct crypto_tfm *tfm) | |
124b53d0 HX |
165 | { |
166 | struct crypto_instance *inst = crypto_tfm_alg_instance(tfm); | |
167 | struct cryptd_instance_ctx *ictx = crypto_instance_ctx(inst); | |
254eff77 | 168 | return ictx->queue; |
124b53d0 HX |
169 | } |
170 | ||
466a7b9e SM |
171 | static inline void cryptd_check_internal(struct rtattr **tb, u32 *type, |
172 | u32 *mask) | |
173 | { | |
174 | struct crypto_attr_type *algt; | |
175 | ||
176 | algt = crypto_get_attr_type(tb); | |
177 | if (IS_ERR(algt)) | |
178 | return; | |
179 | if ((algt->type & CRYPTO_ALG_INTERNAL)) | |
180 | *type |= CRYPTO_ALG_INTERNAL; | |
181 | if ((algt->mask & CRYPTO_ALG_INTERNAL)) | |
182 | *mask |= CRYPTO_ALG_INTERNAL; | |
183 | } | |
184 | ||
124b53d0 HX |
185 | static int cryptd_blkcipher_setkey(struct crypto_ablkcipher *parent, |
186 | const u8 *key, unsigned int keylen) | |
187 | { | |
188 | struct cryptd_blkcipher_ctx *ctx = crypto_ablkcipher_ctx(parent); | |
189 | struct crypto_blkcipher *child = ctx->child; | |
190 | int err; | |
191 | ||
192 | crypto_blkcipher_clear_flags(child, CRYPTO_TFM_REQ_MASK); | |
193 | crypto_blkcipher_set_flags(child, crypto_ablkcipher_get_flags(parent) & | |
194 | CRYPTO_TFM_REQ_MASK); | |
195 | err = crypto_blkcipher_setkey(child, key, keylen); | |
196 | crypto_ablkcipher_set_flags(parent, crypto_blkcipher_get_flags(child) & | |
197 | CRYPTO_TFM_RES_MASK); | |
198 | return err; | |
199 | } | |
200 | ||
201 | static void cryptd_blkcipher_crypt(struct ablkcipher_request *req, | |
202 | struct crypto_blkcipher *child, | |
203 | int err, | |
204 | int (*crypt)(struct blkcipher_desc *desc, | |
205 | struct scatterlist *dst, | |
206 | struct scatterlist *src, | |
207 | unsigned int len)) | |
208 | { | |
209 | struct cryptd_blkcipher_request_ctx *rctx; | |
210 | struct blkcipher_desc desc; | |
211 | ||
212 | rctx = ablkcipher_request_ctx(req); | |
213 | ||
93aa7f8a HX |
214 | if (unlikely(err == -EINPROGRESS)) |
215 | goto out; | |
124b53d0 HX |
216 | |
217 | desc.tfm = child; | |
218 | desc.info = req->info; | |
219 | desc.flags = CRYPTO_TFM_REQ_MAY_SLEEP; | |
220 | ||
221 | err = crypt(&desc, req->dst, req->src, req->nbytes); | |
222 | ||
223 | req->base.complete = rctx->complete; | |
224 | ||
93aa7f8a | 225 | out: |
124b53d0 | 226 | local_bh_disable(); |
93aa7f8a | 227 | rctx->complete(&req->base, err); |
124b53d0 HX |
228 | local_bh_enable(); |
229 | } | |
230 | ||
231 | static void cryptd_blkcipher_encrypt(struct crypto_async_request *req, int err) | |
232 | { | |
233 | struct cryptd_blkcipher_ctx *ctx = crypto_tfm_ctx(req->tfm); | |
234 | struct crypto_blkcipher *child = ctx->child; | |
235 | ||
236 | cryptd_blkcipher_crypt(ablkcipher_request_cast(req), child, err, | |
237 | crypto_blkcipher_crt(child)->encrypt); | |
238 | } | |
239 | ||
240 | static void cryptd_blkcipher_decrypt(struct crypto_async_request *req, int err) | |
241 | { | |
242 | struct cryptd_blkcipher_ctx *ctx = crypto_tfm_ctx(req->tfm); | |
243 | struct crypto_blkcipher *child = ctx->child; | |
244 | ||
245 | cryptd_blkcipher_crypt(ablkcipher_request_cast(req), child, err, | |
246 | crypto_blkcipher_crt(child)->decrypt); | |
247 | } | |
248 | ||
249 | static int cryptd_blkcipher_enqueue(struct ablkcipher_request *req, | |
3e3dc25f | 250 | crypto_completion_t compl) |
124b53d0 HX |
251 | { |
252 | struct cryptd_blkcipher_request_ctx *rctx = ablkcipher_request_ctx(req); | |
253 | struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); | |
254eff77 | 254 | struct cryptd_queue *queue; |
124b53d0 | 255 | |
254eff77 | 256 | queue = cryptd_get_queue(crypto_ablkcipher_tfm(tfm)); |
124b53d0 | 257 | rctx->complete = req->base.complete; |
3e3dc25f | 258 | req->base.complete = compl; |
124b53d0 | 259 | |
254eff77 | 260 | return cryptd_enqueue_request(queue, &req->base); |
124b53d0 HX |
261 | } |
262 | ||
263 | static int cryptd_blkcipher_encrypt_enqueue(struct ablkcipher_request *req) | |
264 | { | |
265 | return cryptd_blkcipher_enqueue(req, cryptd_blkcipher_encrypt); | |
266 | } | |
267 | ||
268 | static int cryptd_blkcipher_decrypt_enqueue(struct ablkcipher_request *req) | |
269 | { | |
270 | return cryptd_blkcipher_enqueue(req, cryptd_blkcipher_decrypt); | |
271 | } | |
272 | ||
273 | static int cryptd_blkcipher_init_tfm(struct crypto_tfm *tfm) | |
274 | { | |
275 | struct crypto_instance *inst = crypto_tfm_alg_instance(tfm); | |
276 | struct cryptd_instance_ctx *ictx = crypto_instance_ctx(inst); | |
277 | struct crypto_spawn *spawn = &ictx->spawn; | |
278 | struct cryptd_blkcipher_ctx *ctx = crypto_tfm_ctx(tfm); | |
279 | struct crypto_blkcipher *cipher; | |
280 | ||
281 | cipher = crypto_spawn_blkcipher(spawn); | |
282 | if (IS_ERR(cipher)) | |
283 | return PTR_ERR(cipher); | |
284 | ||
285 | ctx->child = cipher; | |
286 | tfm->crt_ablkcipher.reqsize = | |
287 | sizeof(struct cryptd_blkcipher_request_ctx); | |
288 | return 0; | |
289 | } | |
290 | ||
291 | static void cryptd_blkcipher_exit_tfm(struct crypto_tfm *tfm) | |
292 | { | |
293 | struct cryptd_blkcipher_ctx *ctx = crypto_tfm_ctx(tfm); | |
124b53d0 HX |
294 | |
295 | crypto_free_blkcipher(ctx->child); | |
296 | } | |
297 | ||
0b535adf HX |
298 | static void *cryptd_alloc_instance(struct crypto_alg *alg, unsigned int head, |
299 | unsigned int tail) | |
124b53d0 | 300 | { |
0b535adf | 301 | char *p; |
124b53d0 | 302 | struct crypto_instance *inst; |
124b53d0 HX |
303 | int err; |
304 | ||
0b535adf HX |
305 | p = kzalloc(head + sizeof(*inst) + tail, GFP_KERNEL); |
306 | if (!p) | |
307 | return ERR_PTR(-ENOMEM); | |
308 | ||
309 | inst = (void *)(p + head); | |
124b53d0 HX |
310 | |
311 | err = -ENAMETOOLONG; | |
312 | if (snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME, | |
313 | "cryptd(%s)", alg->cra_driver_name) >= CRYPTO_MAX_ALG_NAME) | |
314 | goto out_free_inst; | |
315 | ||
124b53d0 HX |
316 | memcpy(inst->alg.cra_name, alg->cra_name, CRYPTO_MAX_ALG_NAME); |
317 | ||
318 | inst->alg.cra_priority = alg->cra_priority + 50; | |
319 | inst->alg.cra_blocksize = alg->cra_blocksize; | |
320 | inst->alg.cra_alignmask = alg->cra_alignmask; | |
321 | ||
322 | out: | |
0b535adf | 323 | return p; |
124b53d0 HX |
324 | |
325 | out_free_inst: | |
0b535adf HX |
326 | kfree(p); |
327 | p = ERR_PTR(err); | |
124b53d0 HX |
328 | goto out; |
329 | } | |
330 | ||
9cd899a3 HX |
331 | static int cryptd_create_blkcipher(struct crypto_template *tmpl, |
332 | struct rtattr **tb, | |
333 | struct cryptd_queue *queue) | |
124b53d0 | 334 | { |
46309d89 | 335 | struct cryptd_instance_ctx *ctx; |
124b53d0 HX |
336 | struct crypto_instance *inst; |
337 | struct crypto_alg *alg; | |
466a7b9e SM |
338 | u32 type = CRYPTO_ALG_TYPE_BLKCIPHER; |
339 | u32 mask = CRYPTO_ALG_TYPE_MASK; | |
46309d89 | 340 | int err; |
124b53d0 | 341 | |
466a7b9e SM |
342 | cryptd_check_internal(tb, &type, &mask); |
343 | ||
344 | alg = crypto_get_attr_alg(tb, type, mask); | |
124b53d0 | 345 | if (IS_ERR(alg)) |
9cd899a3 | 346 | return PTR_ERR(alg); |
124b53d0 | 347 | |
0b535adf | 348 | inst = cryptd_alloc_instance(alg, 0, sizeof(*ctx)); |
05ed8758 | 349 | err = PTR_ERR(inst); |
124b53d0 HX |
350 | if (IS_ERR(inst)) |
351 | goto out_put_alg; | |
352 | ||
46309d89 HX |
353 | ctx = crypto_instance_ctx(inst); |
354 | ctx->queue = queue; | |
355 | ||
356 | err = crypto_init_spawn(&ctx->spawn, alg, inst, | |
357 | CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC); | |
358 | if (err) | |
359 | goto out_free_inst; | |
360 | ||
466a7b9e SM |
361 | type = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC; |
362 | if (alg->cra_flags & CRYPTO_ALG_INTERNAL) | |
363 | type |= CRYPTO_ALG_INTERNAL; | |
364 | inst->alg.cra_flags = type; | |
124b53d0 HX |
365 | inst->alg.cra_type = &crypto_ablkcipher_type; |
366 | ||
367 | inst->alg.cra_ablkcipher.ivsize = alg->cra_blkcipher.ivsize; | |
368 | inst->alg.cra_ablkcipher.min_keysize = alg->cra_blkcipher.min_keysize; | |
369 | inst->alg.cra_ablkcipher.max_keysize = alg->cra_blkcipher.max_keysize; | |
370 | ||
927eead5 HX |
371 | inst->alg.cra_ablkcipher.geniv = alg->cra_blkcipher.geniv; |
372 | ||
124b53d0 HX |
373 | inst->alg.cra_ctxsize = sizeof(struct cryptd_blkcipher_ctx); |
374 | ||
375 | inst->alg.cra_init = cryptd_blkcipher_init_tfm; | |
376 | inst->alg.cra_exit = cryptd_blkcipher_exit_tfm; | |
377 | ||
378 | inst->alg.cra_ablkcipher.setkey = cryptd_blkcipher_setkey; | |
379 | inst->alg.cra_ablkcipher.encrypt = cryptd_blkcipher_encrypt_enqueue; | |
380 | inst->alg.cra_ablkcipher.decrypt = cryptd_blkcipher_decrypt_enqueue; | |
381 | ||
9cd899a3 HX |
382 | err = crypto_register_instance(tmpl, inst); |
383 | if (err) { | |
384 | crypto_drop_spawn(&ctx->spawn); | |
385 | out_free_inst: | |
386 | kfree(inst); | |
387 | } | |
388 | ||
124b53d0 HX |
389 | out_put_alg: |
390 | crypto_mod_put(alg); | |
9cd899a3 | 391 | return err; |
124b53d0 HX |
392 | } |
393 | ||
b8a28251 LH |
394 | static int cryptd_hash_init_tfm(struct crypto_tfm *tfm) |
395 | { | |
396 | struct crypto_instance *inst = crypto_tfm_alg_instance(tfm); | |
46309d89 HX |
397 | struct hashd_instance_ctx *ictx = crypto_instance_ctx(inst); |
398 | struct crypto_shash_spawn *spawn = &ictx->spawn; | |
b8a28251 | 399 | struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(tfm); |
46309d89 | 400 | struct crypto_shash *hash; |
b8a28251 | 401 | |
46309d89 HX |
402 | hash = crypto_spawn_shash(spawn); |
403 | if (IS_ERR(hash)) | |
404 | return PTR_ERR(hash); | |
b8a28251 | 405 | |
46309d89 | 406 | ctx->child = hash; |
0d6669e2 HX |
407 | crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm), |
408 | sizeof(struct cryptd_hash_request_ctx) + | |
409 | crypto_shash_descsize(hash)); | |
b8a28251 LH |
410 | return 0; |
411 | } | |
412 | ||
413 | static void cryptd_hash_exit_tfm(struct crypto_tfm *tfm) | |
414 | { | |
415 | struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(tfm); | |
b8a28251 | 416 | |
46309d89 | 417 | crypto_free_shash(ctx->child); |
b8a28251 LH |
418 | } |
419 | ||
420 | static int cryptd_hash_setkey(struct crypto_ahash *parent, | |
421 | const u8 *key, unsigned int keylen) | |
422 | { | |
423 | struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(parent); | |
46309d89 | 424 | struct crypto_shash *child = ctx->child; |
b8a28251 LH |
425 | int err; |
426 | ||
46309d89 HX |
427 | crypto_shash_clear_flags(child, CRYPTO_TFM_REQ_MASK); |
428 | crypto_shash_set_flags(child, crypto_ahash_get_flags(parent) & | |
429 | CRYPTO_TFM_REQ_MASK); | |
430 | err = crypto_shash_setkey(child, key, keylen); | |
431 | crypto_ahash_set_flags(parent, crypto_shash_get_flags(child) & | |
432 | CRYPTO_TFM_RES_MASK); | |
b8a28251 LH |
433 | return err; |
434 | } | |
435 | ||
436 | static int cryptd_hash_enqueue(struct ahash_request *req, | |
3e3dc25f | 437 | crypto_completion_t compl) |
b8a28251 LH |
438 | { |
439 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); | |
440 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); | |
254eff77 HY |
441 | struct cryptd_queue *queue = |
442 | cryptd_get_queue(crypto_ahash_tfm(tfm)); | |
b8a28251 LH |
443 | |
444 | rctx->complete = req->base.complete; | |
3e3dc25f | 445 | req->base.complete = compl; |
b8a28251 | 446 | |
254eff77 | 447 | return cryptd_enqueue_request(queue, &req->base); |
b8a28251 LH |
448 | } |
449 | ||
450 | static void cryptd_hash_init(struct crypto_async_request *req_async, int err) | |
451 | { | |
46309d89 HX |
452 | struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(req_async->tfm); |
453 | struct crypto_shash *child = ctx->child; | |
454 | struct ahash_request *req = ahash_request_cast(req_async); | |
455 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); | |
456 | struct shash_desc *desc = &rctx->desc; | |
b8a28251 LH |
457 | |
458 | if (unlikely(err == -EINPROGRESS)) | |
459 | goto out; | |
460 | ||
46309d89 HX |
461 | desc->tfm = child; |
462 | desc->flags = CRYPTO_TFM_REQ_MAY_SLEEP; | |
b8a28251 | 463 | |
46309d89 | 464 | err = crypto_shash_init(desc); |
b8a28251 LH |
465 | |
466 | req->base.complete = rctx->complete; | |
467 | ||
468 | out: | |
469 | local_bh_disable(); | |
470 | rctx->complete(&req->base, err); | |
471 | local_bh_enable(); | |
472 | } | |
473 | ||
474 | static int cryptd_hash_init_enqueue(struct ahash_request *req) | |
475 | { | |
476 | return cryptd_hash_enqueue(req, cryptd_hash_init); | |
477 | } | |
478 | ||
479 | static void cryptd_hash_update(struct crypto_async_request *req_async, int err) | |
480 | { | |
46309d89 | 481 | struct ahash_request *req = ahash_request_cast(req_async); |
b8a28251 | 482 | struct cryptd_hash_request_ctx *rctx; |
b8a28251 LH |
483 | |
484 | rctx = ahash_request_ctx(req); | |
485 | ||
486 | if (unlikely(err == -EINPROGRESS)) | |
487 | goto out; | |
488 | ||
46309d89 | 489 | err = shash_ahash_update(req, &rctx->desc); |
b8a28251 LH |
490 | |
491 | req->base.complete = rctx->complete; | |
492 | ||
493 | out: | |
494 | local_bh_disable(); | |
495 | rctx->complete(&req->base, err); | |
496 | local_bh_enable(); | |
497 | } | |
498 | ||
499 | static int cryptd_hash_update_enqueue(struct ahash_request *req) | |
500 | { | |
501 | return cryptd_hash_enqueue(req, cryptd_hash_update); | |
502 | } | |
503 | ||
504 | static void cryptd_hash_final(struct crypto_async_request *req_async, int err) | |
505 | { | |
46309d89 HX |
506 | struct ahash_request *req = ahash_request_cast(req_async); |
507 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); | |
b8a28251 LH |
508 | |
509 | if (unlikely(err == -EINPROGRESS)) | |
510 | goto out; | |
511 | ||
46309d89 | 512 | err = crypto_shash_final(&rctx->desc, req->result); |
b8a28251 LH |
513 | |
514 | req->base.complete = rctx->complete; | |
515 | ||
516 | out: | |
517 | local_bh_disable(); | |
518 | rctx->complete(&req->base, err); | |
519 | local_bh_enable(); | |
520 | } | |
521 | ||
522 | static int cryptd_hash_final_enqueue(struct ahash_request *req) | |
523 | { | |
524 | return cryptd_hash_enqueue(req, cryptd_hash_final); | |
525 | } | |
526 | ||
6fba00d1 HX |
527 | static void cryptd_hash_finup(struct crypto_async_request *req_async, int err) |
528 | { | |
529 | struct ahash_request *req = ahash_request_cast(req_async); | |
530 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); | |
531 | ||
532 | if (unlikely(err == -EINPROGRESS)) | |
533 | goto out; | |
534 | ||
535 | err = shash_ahash_finup(req, &rctx->desc); | |
536 | ||
537 | req->base.complete = rctx->complete; | |
538 | ||
539 | out: | |
540 | local_bh_disable(); | |
541 | rctx->complete(&req->base, err); | |
542 | local_bh_enable(); | |
543 | } | |
544 | ||
545 | static int cryptd_hash_finup_enqueue(struct ahash_request *req) | |
546 | { | |
547 | return cryptd_hash_enqueue(req, cryptd_hash_finup); | |
548 | } | |
549 | ||
b8a28251 LH |
550 | static void cryptd_hash_digest(struct crypto_async_request *req_async, int err) |
551 | { | |
46309d89 HX |
552 | struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(req_async->tfm); |
553 | struct crypto_shash *child = ctx->child; | |
554 | struct ahash_request *req = ahash_request_cast(req_async); | |
555 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); | |
556 | struct shash_desc *desc = &rctx->desc; | |
b8a28251 LH |
557 | |
558 | if (unlikely(err == -EINPROGRESS)) | |
559 | goto out; | |
560 | ||
46309d89 HX |
561 | desc->tfm = child; |
562 | desc->flags = CRYPTO_TFM_REQ_MAY_SLEEP; | |
b8a28251 | 563 | |
46309d89 | 564 | err = shash_ahash_digest(req, desc); |
b8a28251 LH |
565 | |
566 | req->base.complete = rctx->complete; | |
567 | ||
568 | out: | |
569 | local_bh_disable(); | |
570 | rctx->complete(&req->base, err); | |
571 | local_bh_enable(); | |
572 | } | |
573 | ||
574 | static int cryptd_hash_digest_enqueue(struct ahash_request *req) | |
575 | { | |
576 | return cryptd_hash_enqueue(req, cryptd_hash_digest); | |
577 | } | |
578 | ||
6fba00d1 HX |
579 | static int cryptd_hash_export(struct ahash_request *req, void *out) |
580 | { | |
581 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); | |
582 | ||
583 | return crypto_shash_export(&rctx->desc, out); | |
584 | } | |
585 | ||
586 | static int cryptd_hash_import(struct ahash_request *req, const void *in) | |
587 | { | |
588 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); | |
589 | ||
590 | return crypto_shash_import(&rctx->desc, in); | |
591 | } | |
592 | ||
9cd899a3 HX |
593 | static int cryptd_create_hash(struct crypto_template *tmpl, struct rtattr **tb, |
594 | struct cryptd_queue *queue) | |
b8a28251 | 595 | { |
46309d89 | 596 | struct hashd_instance_ctx *ctx; |
0b535adf | 597 | struct ahash_instance *inst; |
46309d89 | 598 | struct shash_alg *salg; |
b8a28251 | 599 | struct crypto_alg *alg; |
466a7b9e SM |
600 | u32 type = 0; |
601 | u32 mask = 0; | |
46309d89 | 602 | int err; |
b8a28251 | 603 | |
466a7b9e SM |
604 | cryptd_check_internal(tb, &type, &mask); |
605 | ||
606 | salg = shash_attr_alg(tb[1], type, mask); | |
46309d89 | 607 | if (IS_ERR(salg)) |
9cd899a3 | 608 | return PTR_ERR(salg); |
b8a28251 | 609 | |
46309d89 | 610 | alg = &salg->base; |
0b535adf HX |
611 | inst = cryptd_alloc_instance(alg, ahash_instance_headroom(), |
612 | sizeof(*ctx)); | |
05ed8758 | 613 | err = PTR_ERR(inst); |
b8a28251 LH |
614 | if (IS_ERR(inst)) |
615 | goto out_put_alg; | |
616 | ||
0b535adf | 617 | ctx = ahash_instance_ctx(inst); |
46309d89 HX |
618 | ctx->queue = queue; |
619 | ||
0b535adf HX |
620 | err = crypto_init_shash_spawn(&ctx->spawn, salg, |
621 | ahash_crypto_instance(inst)); | |
46309d89 HX |
622 | if (err) |
623 | goto out_free_inst; | |
624 | ||
466a7b9e SM |
625 | type = CRYPTO_ALG_ASYNC; |
626 | if (alg->cra_flags & CRYPTO_ALG_INTERNAL) | |
627 | type |= CRYPTO_ALG_INTERNAL; | |
628 | inst->alg.halg.base.cra_flags = type; | |
b8a28251 | 629 | |
0b535adf HX |
630 | inst->alg.halg.digestsize = salg->digestsize; |
631 | inst->alg.halg.base.cra_ctxsize = sizeof(struct cryptd_hash_ctx); | |
b8a28251 | 632 | |
0b535adf HX |
633 | inst->alg.halg.base.cra_init = cryptd_hash_init_tfm; |
634 | inst->alg.halg.base.cra_exit = cryptd_hash_exit_tfm; | |
b8a28251 | 635 | |
0b535adf HX |
636 | inst->alg.init = cryptd_hash_init_enqueue; |
637 | inst->alg.update = cryptd_hash_update_enqueue; | |
638 | inst->alg.final = cryptd_hash_final_enqueue; | |
6fba00d1 HX |
639 | inst->alg.finup = cryptd_hash_finup_enqueue; |
640 | inst->alg.export = cryptd_hash_export; | |
641 | inst->alg.import = cryptd_hash_import; | |
0b535adf HX |
642 | inst->alg.setkey = cryptd_hash_setkey; |
643 | inst->alg.digest = cryptd_hash_digest_enqueue; | |
b8a28251 | 644 | |
0b535adf | 645 | err = ahash_register_instance(tmpl, inst); |
9cd899a3 HX |
646 | if (err) { |
647 | crypto_drop_shash(&ctx->spawn); | |
648 | out_free_inst: | |
649 | kfree(inst); | |
650 | } | |
651 | ||
b8a28251 LH |
652 | out_put_alg: |
653 | crypto_mod_put(alg); | |
9cd899a3 | 654 | return err; |
b8a28251 LH |
655 | } |
656 | ||
298c926c AH |
657 | static void cryptd_aead_crypt(struct aead_request *req, |
658 | struct crypto_aead *child, | |
659 | int err, | |
660 | int (*crypt)(struct aead_request *req)) | |
661 | { | |
662 | struct cryptd_aead_request_ctx *rctx; | |
663 | rctx = aead_request_ctx(req); | |
664 | ||
665 | if (unlikely(err == -EINPROGRESS)) | |
666 | goto out; | |
667 | aead_request_set_tfm(req, child); | |
668 | err = crypt( req ); | |
669 | req->base.complete = rctx->complete; | |
670 | out: | |
671 | local_bh_disable(); | |
672 | rctx->complete(&req->base, err); | |
673 | local_bh_enable(); | |
674 | } | |
675 | ||
676 | static void cryptd_aead_encrypt(struct crypto_async_request *areq, int err) | |
677 | { | |
678 | struct cryptd_aead_ctx *ctx = crypto_tfm_ctx(areq->tfm); | |
679 | struct crypto_aead *child = ctx->child; | |
680 | struct aead_request *req; | |
681 | ||
682 | req = container_of(areq, struct aead_request, base); | |
683 | cryptd_aead_crypt(req, child, err, crypto_aead_crt(child)->encrypt); | |
684 | } | |
685 | ||
686 | static void cryptd_aead_decrypt(struct crypto_async_request *areq, int err) | |
687 | { | |
688 | struct cryptd_aead_ctx *ctx = crypto_tfm_ctx(areq->tfm); | |
689 | struct crypto_aead *child = ctx->child; | |
690 | struct aead_request *req; | |
691 | ||
692 | req = container_of(areq, struct aead_request, base); | |
693 | cryptd_aead_crypt(req, child, err, crypto_aead_crt(child)->decrypt); | |
694 | } | |
695 | ||
696 | static int cryptd_aead_enqueue(struct aead_request *req, | |
3e3dc25f | 697 | crypto_completion_t compl) |
298c926c AH |
698 | { |
699 | struct cryptd_aead_request_ctx *rctx = aead_request_ctx(req); | |
700 | struct crypto_aead *tfm = crypto_aead_reqtfm(req); | |
701 | struct cryptd_queue *queue = cryptd_get_queue(crypto_aead_tfm(tfm)); | |
702 | ||
703 | rctx->complete = req->base.complete; | |
3e3dc25f | 704 | req->base.complete = compl; |
298c926c AH |
705 | return cryptd_enqueue_request(queue, &req->base); |
706 | } | |
707 | ||
708 | static int cryptd_aead_encrypt_enqueue(struct aead_request *req) | |
709 | { | |
710 | return cryptd_aead_enqueue(req, cryptd_aead_encrypt ); | |
711 | } | |
712 | ||
713 | static int cryptd_aead_decrypt_enqueue(struct aead_request *req) | |
714 | { | |
715 | return cryptd_aead_enqueue(req, cryptd_aead_decrypt ); | |
716 | } | |
717 | ||
718 | static int cryptd_aead_init_tfm(struct crypto_tfm *tfm) | |
719 | { | |
720 | struct crypto_instance *inst = crypto_tfm_alg_instance(tfm); | |
721 | struct aead_instance_ctx *ictx = crypto_instance_ctx(inst); | |
722 | struct crypto_aead_spawn *spawn = &ictx->aead_spawn; | |
723 | struct cryptd_aead_ctx *ctx = crypto_tfm_ctx(tfm); | |
724 | struct crypto_aead *cipher; | |
725 | ||
726 | cipher = crypto_spawn_aead(spawn); | |
727 | if (IS_ERR(cipher)) | |
728 | return PTR_ERR(cipher); | |
729 | ||
730 | crypto_aead_set_flags(cipher, CRYPTO_TFM_REQ_MAY_SLEEP); | |
731 | ctx->child = cipher; | |
529a0b62 HX |
732 | crypto_aead_set_reqsize(__crypto_aead_cast(tfm), |
733 | sizeof(struct cryptd_aead_request_ctx)); | |
298c926c AH |
734 | return 0; |
735 | } | |
736 | ||
737 | static void cryptd_aead_exit_tfm(struct crypto_tfm *tfm) | |
738 | { | |
739 | struct cryptd_aead_ctx *ctx = crypto_tfm_ctx(tfm); | |
740 | crypto_free_aead(ctx->child); | |
741 | } | |
742 | ||
743 | static int cryptd_create_aead(struct crypto_template *tmpl, | |
744 | struct rtattr **tb, | |
745 | struct cryptd_queue *queue) | |
746 | { | |
747 | struct aead_instance_ctx *ctx; | |
748 | struct crypto_instance *inst; | |
749 | struct crypto_alg *alg; | |
466a7b9e SM |
750 | u32 type = CRYPTO_ALG_TYPE_AEAD; |
751 | u32 mask = CRYPTO_ALG_TYPE_MASK; | |
298c926c AH |
752 | int err; |
753 | ||
466a7b9e SM |
754 | cryptd_check_internal(tb, &type, &mask); |
755 | ||
756 | alg = crypto_get_attr_alg(tb, type, mask); | |
298c926c AH |
757 | if (IS_ERR(alg)) |
758 | return PTR_ERR(alg); | |
759 | ||
760 | inst = cryptd_alloc_instance(alg, 0, sizeof(*ctx)); | |
761 | err = PTR_ERR(inst); | |
762 | if (IS_ERR(inst)) | |
763 | goto out_put_alg; | |
764 | ||
765 | ctx = crypto_instance_ctx(inst); | |
766 | ctx->queue = queue; | |
767 | ||
768 | err = crypto_init_spawn(&ctx->aead_spawn.base, alg, inst, | |
769 | CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC); | |
770 | if (err) | |
771 | goto out_free_inst; | |
772 | ||
466a7b9e SM |
773 | type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC; |
774 | if (alg->cra_flags & CRYPTO_ALG_INTERNAL) | |
775 | type |= CRYPTO_ALG_INTERNAL; | |
776 | inst->alg.cra_flags = type; | |
298c926c AH |
777 | inst->alg.cra_type = alg->cra_type; |
778 | inst->alg.cra_ctxsize = sizeof(struct cryptd_aead_ctx); | |
779 | inst->alg.cra_init = cryptd_aead_init_tfm; | |
780 | inst->alg.cra_exit = cryptd_aead_exit_tfm; | |
781 | inst->alg.cra_aead.setkey = alg->cra_aead.setkey; | |
782 | inst->alg.cra_aead.setauthsize = alg->cra_aead.setauthsize; | |
783 | inst->alg.cra_aead.geniv = alg->cra_aead.geniv; | |
784 | inst->alg.cra_aead.ivsize = alg->cra_aead.ivsize; | |
785 | inst->alg.cra_aead.maxauthsize = alg->cra_aead.maxauthsize; | |
786 | inst->alg.cra_aead.encrypt = cryptd_aead_encrypt_enqueue; | |
787 | inst->alg.cra_aead.decrypt = cryptd_aead_decrypt_enqueue; | |
788 | inst->alg.cra_aead.givencrypt = alg->cra_aead.givencrypt; | |
789 | inst->alg.cra_aead.givdecrypt = alg->cra_aead.givdecrypt; | |
790 | ||
791 | err = crypto_register_instance(tmpl, inst); | |
792 | if (err) { | |
793 | crypto_drop_spawn(&ctx->aead_spawn.base); | |
794 | out_free_inst: | |
795 | kfree(inst); | |
796 | } | |
797 | out_put_alg: | |
798 | crypto_mod_put(alg); | |
799 | return err; | |
800 | } | |
801 | ||
254eff77 | 802 | static struct cryptd_queue queue; |
124b53d0 | 803 | |
9cd899a3 | 804 | static int cryptd_create(struct crypto_template *tmpl, struct rtattr **tb) |
124b53d0 HX |
805 | { |
806 | struct crypto_attr_type *algt; | |
807 | ||
808 | algt = crypto_get_attr_type(tb); | |
809 | if (IS_ERR(algt)) | |
9cd899a3 | 810 | return PTR_ERR(algt); |
124b53d0 HX |
811 | |
812 | switch (algt->type & algt->mask & CRYPTO_ALG_TYPE_MASK) { | |
813 | case CRYPTO_ALG_TYPE_BLKCIPHER: | |
9cd899a3 | 814 | return cryptd_create_blkcipher(tmpl, tb, &queue); |
b8a28251 | 815 | case CRYPTO_ALG_TYPE_DIGEST: |
9cd899a3 | 816 | return cryptd_create_hash(tmpl, tb, &queue); |
298c926c AH |
817 | case CRYPTO_ALG_TYPE_AEAD: |
818 | return cryptd_create_aead(tmpl, tb, &queue); | |
124b53d0 HX |
819 | } |
820 | ||
9cd899a3 | 821 | return -EINVAL; |
124b53d0 HX |
822 | } |
823 | ||
824 | static void cryptd_free(struct crypto_instance *inst) | |
825 | { | |
826 | struct cryptd_instance_ctx *ctx = crypto_instance_ctx(inst); | |
0b535adf | 827 | struct hashd_instance_ctx *hctx = crypto_instance_ctx(inst); |
298c926c | 828 | struct aead_instance_ctx *aead_ctx = crypto_instance_ctx(inst); |
0b535adf HX |
829 | |
830 | switch (inst->alg.cra_flags & CRYPTO_ALG_TYPE_MASK) { | |
831 | case CRYPTO_ALG_TYPE_AHASH: | |
832 | crypto_drop_shash(&hctx->spawn); | |
833 | kfree(ahash_instance(inst)); | |
834 | return; | |
298c926c AH |
835 | case CRYPTO_ALG_TYPE_AEAD: |
836 | crypto_drop_spawn(&aead_ctx->aead_spawn.base); | |
837 | kfree(inst); | |
838 | return; | |
839 | default: | |
840 | crypto_drop_spawn(&ctx->spawn); | |
841 | kfree(inst); | |
0b535adf | 842 | } |
124b53d0 HX |
843 | } |
844 | ||
845 | static struct crypto_template cryptd_tmpl = { | |
846 | .name = "cryptd", | |
9cd899a3 | 847 | .create = cryptd_create, |
124b53d0 HX |
848 | .free = cryptd_free, |
849 | .module = THIS_MODULE, | |
850 | }; | |
851 | ||
1cac2cbc HY |
852 | struct cryptd_ablkcipher *cryptd_alloc_ablkcipher(const char *alg_name, |
853 | u32 type, u32 mask) | |
854 | { | |
855 | char cryptd_alg_name[CRYPTO_MAX_ALG_NAME]; | |
505fd21d | 856 | struct crypto_tfm *tfm; |
1cac2cbc HY |
857 | |
858 | if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME, | |
859 | "cryptd(%s)", alg_name) >= CRYPTO_MAX_ALG_NAME) | |
860 | return ERR_PTR(-EINVAL); | |
505fd21d HY |
861 | type &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV); |
862 | type |= CRYPTO_ALG_TYPE_BLKCIPHER; | |
863 | mask &= ~CRYPTO_ALG_TYPE_MASK; | |
864 | mask |= (CRYPTO_ALG_GENIV | CRYPTO_ALG_TYPE_BLKCIPHER_MASK); | |
865 | tfm = crypto_alloc_base(cryptd_alg_name, type, mask); | |
1cac2cbc HY |
866 | if (IS_ERR(tfm)) |
867 | return ERR_CAST(tfm); | |
505fd21d HY |
868 | if (tfm->__crt_alg->cra_module != THIS_MODULE) { |
869 | crypto_free_tfm(tfm); | |
1cac2cbc HY |
870 | return ERR_PTR(-EINVAL); |
871 | } | |
872 | ||
505fd21d | 873 | return __cryptd_ablkcipher_cast(__crypto_ablkcipher_cast(tfm)); |
1cac2cbc HY |
874 | } |
875 | EXPORT_SYMBOL_GPL(cryptd_alloc_ablkcipher); | |
876 | ||
877 | struct crypto_blkcipher *cryptd_ablkcipher_child(struct cryptd_ablkcipher *tfm) | |
878 | { | |
879 | struct cryptd_blkcipher_ctx *ctx = crypto_ablkcipher_ctx(&tfm->base); | |
880 | return ctx->child; | |
881 | } | |
882 | EXPORT_SYMBOL_GPL(cryptd_ablkcipher_child); | |
883 | ||
884 | void cryptd_free_ablkcipher(struct cryptd_ablkcipher *tfm) | |
885 | { | |
886 | crypto_free_ablkcipher(&tfm->base); | |
887 | } | |
888 | EXPORT_SYMBOL_GPL(cryptd_free_ablkcipher); | |
889 | ||
ace13663 HY |
890 | struct cryptd_ahash *cryptd_alloc_ahash(const char *alg_name, |
891 | u32 type, u32 mask) | |
892 | { | |
893 | char cryptd_alg_name[CRYPTO_MAX_ALG_NAME]; | |
894 | struct crypto_ahash *tfm; | |
895 | ||
896 | if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME, | |
897 | "cryptd(%s)", alg_name) >= CRYPTO_MAX_ALG_NAME) | |
898 | return ERR_PTR(-EINVAL); | |
899 | tfm = crypto_alloc_ahash(cryptd_alg_name, type, mask); | |
900 | if (IS_ERR(tfm)) | |
901 | return ERR_CAST(tfm); | |
902 | if (tfm->base.__crt_alg->cra_module != THIS_MODULE) { | |
903 | crypto_free_ahash(tfm); | |
904 | return ERR_PTR(-EINVAL); | |
905 | } | |
906 | ||
907 | return __cryptd_ahash_cast(tfm); | |
908 | } | |
909 | EXPORT_SYMBOL_GPL(cryptd_alloc_ahash); | |
910 | ||
911 | struct crypto_shash *cryptd_ahash_child(struct cryptd_ahash *tfm) | |
912 | { | |
913 | struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(&tfm->base); | |
914 | ||
915 | return ctx->child; | |
916 | } | |
917 | EXPORT_SYMBOL_GPL(cryptd_ahash_child); | |
918 | ||
0e1227d3 HY |
919 | struct shash_desc *cryptd_shash_desc(struct ahash_request *req) |
920 | { | |
921 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); | |
922 | return &rctx->desc; | |
923 | } | |
924 | EXPORT_SYMBOL_GPL(cryptd_shash_desc); | |
925 | ||
ace13663 HY |
926 | void cryptd_free_ahash(struct cryptd_ahash *tfm) |
927 | { | |
928 | crypto_free_ahash(&tfm->base); | |
929 | } | |
930 | EXPORT_SYMBOL_GPL(cryptd_free_ahash); | |
931 | ||
298c926c AH |
932 | struct cryptd_aead *cryptd_alloc_aead(const char *alg_name, |
933 | u32 type, u32 mask) | |
934 | { | |
935 | char cryptd_alg_name[CRYPTO_MAX_ALG_NAME]; | |
936 | struct crypto_aead *tfm; | |
937 | ||
938 | if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME, | |
939 | "cryptd(%s)", alg_name) >= CRYPTO_MAX_ALG_NAME) | |
940 | return ERR_PTR(-EINVAL); | |
941 | tfm = crypto_alloc_aead(cryptd_alg_name, type, mask); | |
942 | if (IS_ERR(tfm)) | |
943 | return ERR_CAST(tfm); | |
944 | if (tfm->base.__crt_alg->cra_module != THIS_MODULE) { | |
945 | crypto_free_aead(tfm); | |
946 | return ERR_PTR(-EINVAL); | |
947 | } | |
948 | return __cryptd_aead_cast(tfm); | |
949 | } | |
950 | EXPORT_SYMBOL_GPL(cryptd_alloc_aead); | |
951 | ||
952 | struct crypto_aead *cryptd_aead_child(struct cryptd_aead *tfm) | |
953 | { | |
954 | struct cryptd_aead_ctx *ctx; | |
955 | ctx = crypto_aead_ctx(&tfm->base); | |
956 | return ctx->child; | |
957 | } | |
958 | EXPORT_SYMBOL_GPL(cryptd_aead_child); | |
959 | ||
960 | void cryptd_free_aead(struct cryptd_aead *tfm) | |
961 | { | |
962 | crypto_free_aead(&tfm->base); | |
963 | } | |
964 | EXPORT_SYMBOL_GPL(cryptd_free_aead); | |
965 | ||
124b53d0 HX |
966 | static int __init cryptd_init(void) |
967 | { | |
968 | int err; | |
969 | ||
254eff77 | 970 | err = cryptd_init_queue(&queue, CRYPTD_MAX_CPU_QLEN); |
124b53d0 HX |
971 | if (err) |
972 | return err; | |
973 | ||
974 | err = crypto_register_template(&cryptd_tmpl); | |
975 | if (err) | |
254eff77 | 976 | cryptd_fini_queue(&queue); |
124b53d0 HX |
977 | |
978 | return err; | |
979 | } | |
980 | ||
981 | static void __exit cryptd_exit(void) | |
982 | { | |
254eff77 | 983 | cryptd_fini_queue(&queue); |
124b53d0 HX |
984 | crypto_unregister_template(&cryptd_tmpl); |
985 | } | |
986 | ||
b2bac6ac | 987 | subsys_initcall(cryptd_init); |
124b53d0 HX |
988 | module_exit(cryptd_exit); |
989 | ||
990 | MODULE_LICENSE("GPL"); | |
991 | MODULE_DESCRIPTION("Software async crypto daemon"); | |
4943ba16 | 992 | MODULE_ALIAS_CRYPTO("cryptd"); |