Commit | Line | Data |
---|---|---|
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 | ||
9b8c456e HX |
298 | static int cryptd_init_instance(struct crypto_instance *inst, |
299 | struct crypto_alg *alg) | |
300 | { | |
301 | if (snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME, | |
302 | "cryptd(%s)", | |
303 | alg->cra_driver_name) >= CRYPTO_MAX_ALG_NAME) | |
304 | return -ENAMETOOLONG; | |
305 | ||
306 | memcpy(inst->alg.cra_name, alg->cra_name, CRYPTO_MAX_ALG_NAME); | |
307 | ||
308 | inst->alg.cra_priority = alg->cra_priority + 50; | |
309 | inst->alg.cra_blocksize = alg->cra_blocksize; | |
310 | inst->alg.cra_alignmask = alg->cra_alignmask; | |
311 | ||
312 | return 0; | |
313 | } | |
314 | ||
0b535adf HX |
315 | static void *cryptd_alloc_instance(struct crypto_alg *alg, unsigned int head, |
316 | unsigned int tail) | |
124b53d0 | 317 | { |
0b535adf | 318 | char *p; |
124b53d0 | 319 | struct crypto_instance *inst; |
124b53d0 HX |
320 | int err; |
321 | ||
0b535adf HX |
322 | p = kzalloc(head + sizeof(*inst) + tail, GFP_KERNEL); |
323 | if (!p) | |
324 | return ERR_PTR(-ENOMEM); | |
325 | ||
326 | inst = (void *)(p + head); | |
124b53d0 | 327 | |
9b8c456e HX |
328 | err = cryptd_init_instance(inst, alg); |
329 | if (err) | |
124b53d0 HX |
330 | goto out_free_inst; |
331 | ||
124b53d0 | 332 | out: |
0b535adf | 333 | return p; |
124b53d0 HX |
334 | |
335 | out_free_inst: | |
0b535adf HX |
336 | kfree(p); |
337 | p = ERR_PTR(err); | |
124b53d0 HX |
338 | goto out; |
339 | } | |
340 | ||
9cd899a3 HX |
341 | static int cryptd_create_blkcipher(struct crypto_template *tmpl, |
342 | struct rtattr **tb, | |
343 | struct cryptd_queue *queue) | |
124b53d0 | 344 | { |
46309d89 | 345 | struct cryptd_instance_ctx *ctx; |
124b53d0 HX |
346 | struct crypto_instance *inst; |
347 | struct crypto_alg *alg; | |
466a7b9e SM |
348 | u32 type = CRYPTO_ALG_TYPE_BLKCIPHER; |
349 | u32 mask = CRYPTO_ALG_TYPE_MASK; | |
46309d89 | 350 | int err; |
124b53d0 | 351 | |
466a7b9e SM |
352 | cryptd_check_internal(tb, &type, &mask); |
353 | ||
354 | alg = crypto_get_attr_alg(tb, type, mask); | |
124b53d0 | 355 | if (IS_ERR(alg)) |
9cd899a3 | 356 | return PTR_ERR(alg); |
124b53d0 | 357 | |
0b535adf | 358 | inst = cryptd_alloc_instance(alg, 0, sizeof(*ctx)); |
05ed8758 | 359 | err = PTR_ERR(inst); |
124b53d0 HX |
360 | if (IS_ERR(inst)) |
361 | goto out_put_alg; | |
362 | ||
46309d89 HX |
363 | ctx = crypto_instance_ctx(inst); |
364 | ctx->queue = queue; | |
365 | ||
366 | err = crypto_init_spawn(&ctx->spawn, alg, inst, | |
367 | CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC); | |
368 | if (err) | |
369 | goto out_free_inst; | |
370 | ||
466a7b9e SM |
371 | type = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC; |
372 | if (alg->cra_flags & CRYPTO_ALG_INTERNAL) | |
373 | type |= CRYPTO_ALG_INTERNAL; | |
374 | inst->alg.cra_flags = type; | |
124b53d0 HX |
375 | inst->alg.cra_type = &crypto_ablkcipher_type; |
376 | ||
377 | inst->alg.cra_ablkcipher.ivsize = alg->cra_blkcipher.ivsize; | |
378 | inst->alg.cra_ablkcipher.min_keysize = alg->cra_blkcipher.min_keysize; | |
379 | inst->alg.cra_ablkcipher.max_keysize = alg->cra_blkcipher.max_keysize; | |
380 | ||
927eead5 HX |
381 | inst->alg.cra_ablkcipher.geniv = alg->cra_blkcipher.geniv; |
382 | ||
124b53d0 HX |
383 | inst->alg.cra_ctxsize = sizeof(struct cryptd_blkcipher_ctx); |
384 | ||
385 | inst->alg.cra_init = cryptd_blkcipher_init_tfm; | |
386 | inst->alg.cra_exit = cryptd_blkcipher_exit_tfm; | |
387 | ||
388 | inst->alg.cra_ablkcipher.setkey = cryptd_blkcipher_setkey; | |
389 | inst->alg.cra_ablkcipher.encrypt = cryptd_blkcipher_encrypt_enqueue; | |
390 | inst->alg.cra_ablkcipher.decrypt = cryptd_blkcipher_decrypt_enqueue; | |
391 | ||
9cd899a3 HX |
392 | err = crypto_register_instance(tmpl, inst); |
393 | if (err) { | |
394 | crypto_drop_spawn(&ctx->spawn); | |
395 | out_free_inst: | |
396 | kfree(inst); | |
397 | } | |
398 | ||
124b53d0 HX |
399 | out_put_alg: |
400 | crypto_mod_put(alg); | |
9cd899a3 | 401 | return err; |
124b53d0 HX |
402 | } |
403 | ||
b8a28251 LH |
404 | static int cryptd_hash_init_tfm(struct crypto_tfm *tfm) |
405 | { | |
406 | struct crypto_instance *inst = crypto_tfm_alg_instance(tfm); | |
46309d89 HX |
407 | struct hashd_instance_ctx *ictx = crypto_instance_ctx(inst); |
408 | struct crypto_shash_spawn *spawn = &ictx->spawn; | |
b8a28251 | 409 | struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(tfm); |
46309d89 | 410 | struct crypto_shash *hash; |
b8a28251 | 411 | |
46309d89 HX |
412 | hash = crypto_spawn_shash(spawn); |
413 | if (IS_ERR(hash)) | |
414 | return PTR_ERR(hash); | |
b8a28251 | 415 | |
46309d89 | 416 | ctx->child = hash; |
0d6669e2 HX |
417 | crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm), |
418 | sizeof(struct cryptd_hash_request_ctx) + | |
419 | crypto_shash_descsize(hash)); | |
b8a28251 LH |
420 | return 0; |
421 | } | |
422 | ||
423 | static void cryptd_hash_exit_tfm(struct crypto_tfm *tfm) | |
424 | { | |
425 | struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(tfm); | |
b8a28251 | 426 | |
46309d89 | 427 | crypto_free_shash(ctx->child); |
b8a28251 LH |
428 | } |
429 | ||
430 | static int cryptd_hash_setkey(struct crypto_ahash *parent, | |
431 | const u8 *key, unsigned int keylen) | |
432 | { | |
433 | struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(parent); | |
46309d89 | 434 | struct crypto_shash *child = ctx->child; |
b8a28251 LH |
435 | int err; |
436 | ||
46309d89 HX |
437 | crypto_shash_clear_flags(child, CRYPTO_TFM_REQ_MASK); |
438 | crypto_shash_set_flags(child, crypto_ahash_get_flags(parent) & | |
439 | CRYPTO_TFM_REQ_MASK); | |
440 | err = crypto_shash_setkey(child, key, keylen); | |
441 | crypto_ahash_set_flags(parent, crypto_shash_get_flags(child) & | |
442 | CRYPTO_TFM_RES_MASK); | |
b8a28251 LH |
443 | return err; |
444 | } | |
445 | ||
446 | static int cryptd_hash_enqueue(struct ahash_request *req, | |
3e3dc25f | 447 | crypto_completion_t compl) |
b8a28251 LH |
448 | { |
449 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); | |
450 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); | |
254eff77 HY |
451 | struct cryptd_queue *queue = |
452 | cryptd_get_queue(crypto_ahash_tfm(tfm)); | |
b8a28251 LH |
453 | |
454 | rctx->complete = req->base.complete; | |
3e3dc25f | 455 | req->base.complete = compl; |
b8a28251 | 456 | |
254eff77 | 457 | return cryptd_enqueue_request(queue, &req->base); |
b8a28251 LH |
458 | } |
459 | ||
460 | static void cryptd_hash_init(struct crypto_async_request *req_async, int err) | |
461 | { | |
46309d89 HX |
462 | struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(req_async->tfm); |
463 | struct crypto_shash *child = ctx->child; | |
464 | struct ahash_request *req = ahash_request_cast(req_async); | |
465 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); | |
466 | struct shash_desc *desc = &rctx->desc; | |
b8a28251 LH |
467 | |
468 | if (unlikely(err == -EINPROGRESS)) | |
469 | goto out; | |
470 | ||
46309d89 HX |
471 | desc->tfm = child; |
472 | desc->flags = CRYPTO_TFM_REQ_MAY_SLEEP; | |
b8a28251 | 473 | |
46309d89 | 474 | err = crypto_shash_init(desc); |
b8a28251 LH |
475 | |
476 | req->base.complete = rctx->complete; | |
477 | ||
478 | out: | |
479 | local_bh_disable(); | |
480 | rctx->complete(&req->base, err); | |
481 | local_bh_enable(); | |
482 | } | |
483 | ||
484 | static int cryptd_hash_init_enqueue(struct ahash_request *req) | |
485 | { | |
486 | return cryptd_hash_enqueue(req, cryptd_hash_init); | |
487 | } | |
488 | ||
489 | static void cryptd_hash_update(struct crypto_async_request *req_async, int err) | |
490 | { | |
46309d89 | 491 | struct ahash_request *req = ahash_request_cast(req_async); |
b8a28251 | 492 | struct cryptd_hash_request_ctx *rctx; |
b8a28251 LH |
493 | |
494 | rctx = ahash_request_ctx(req); | |
495 | ||
496 | if (unlikely(err == -EINPROGRESS)) | |
497 | goto out; | |
498 | ||
46309d89 | 499 | err = shash_ahash_update(req, &rctx->desc); |
b8a28251 LH |
500 | |
501 | req->base.complete = rctx->complete; | |
502 | ||
503 | out: | |
504 | local_bh_disable(); | |
505 | rctx->complete(&req->base, err); | |
506 | local_bh_enable(); | |
507 | } | |
508 | ||
509 | static int cryptd_hash_update_enqueue(struct ahash_request *req) | |
510 | { | |
511 | return cryptd_hash_enqueue(req, cryptd_hash_update); | |
512 | } | |
513 | ||
514 | static void cryptd_hash_final(struct crypto_async_request *req_async, int err) | |
515 | { | |
46309d89 HX |
516 | struct ahash_request *req = ahash_request_cast(req_async); |
517 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); | |
b8a28251 LH |
518 | |
519 | if (unlikely(err == -EINPROGRESS)) | |
520 | goto out; | |
521 | ||
46309d89 | 522 | err = crypto_shash_final(&rctx->desc, req->result); |
b8a28251 LH |
523 | |
524 | req->base.complete = rctx->complete; | |
525 | ||
526 | out: | |
527 | local_bh_disable(); | |
528 | rctx->complete(&req->base, err); | |
529 | local_bh_enable(); | |
530 | } | |
531 | ||
532 | static int cryptd_hash_final_enqueue(struct ahash_request *req) | |
533 | { | |
534 | return cryptd_hash_enqueue(req, cryptd_hash_final); | |
535 | } | |
536 | ||
6fba00d1 HX |
537 | static void cryptd_hash_finup(struct crypto_async_request *req_async, int err) |
538 | { | |
539 | struct ahash_request *req = ahash_request_cast(req_async); | |
540 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); | |
541 | ||
542 | if (unlikely(err == -EINPROGRESS)) | |
543 | goto out; | |
544 | ||
545 | err = shash_ahash_finup(req, &rctx->desc); | |
546 | ||
547 | req->base.complete = rctx->complete; | |
548 | ||
549 | out: | |
550 | local_bh_disable(); | |
551 | rctx->complete(&req->base, err); | |
552 | local_bh_enable(); | |
553 | } | |
554 | ||
555 | static int cryptd_hash_finup_enqueue(struct ahash_request *req) | |
556 | { | |
557 | return cryptd_hash_enqueue(req, cryptd_hash_finup); | |
558 | } | |
559 | ||
b8a28251 LH |
560 | static void cryptd_hash_digest(struct crypto_async_request *req_async, int err) |
561 | { | |
46309d89 HX |
562 | struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(req_async->tfm); |
563 | struct crypto_shash *child = ctx->child; | |
564 | struct ahash_request *req = ahash_request_cast(req_async); | |
565 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); | |
566 | struct shash_desc *desc = &rctx->desc; | |
b8a28251 LH |
567 | |
568 | if (unlikely(err == -EINPROGRESS)) | |
569 | goto out; | |
570 | ||
46309d89 HX |
571 | desc->tfm = child; |
572 | desc->flags = CRYPTO_TFM_REQ_MAY_SLEEP; | |
b8a28251 | 573 | |
46309d89 | 574 | err = shash_ahash_digest(req, desc); |
b8a28251 LH |
575 | |
576 | req->base.complete = rctx->complete; | |
577 | ||
578 | out: | |
579 | local_bh_disable(); | |
580 | rctx->complete(&req->base, err); | |
581 | local_bh_enable(); | |
582 | } | |
583 | ||
584 | static int cryptd_hash_digest_enqueue(struct ahash_request *req) | |
585 | { | |
586 | return cryptd_hash_enqueue(req, cryptd_hash_digest); | |
587 | } | |
588 | ||
6fba00d1 HX |
589 | static int cryptd_hash_export(struct ahash_request *req, void *out) |
590 | { | |
591 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); | |
592 | ||
593 | return crypto_shash_export(&rctx->desc, out); | |
594 | } | |
595 | ||
596 | static int cryptd_hash_import(struct ahash_request *req, const void *in) | |
597 | { | |
598 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); | |
599 | ||
600 | return crypto_shash_import(&rctx->desc, in); | |
601 | } | |
602 | ||
9cd899a3 HX |
603 | static int cryptd_create_hash(struct crypto_template *tmpl, struct rtattr **tb, |
604 | struct cryptd_queue *queue) | |
b8a28251 | 605 | { |
46309d89 | 606 | struct hashd_instance_ctx *ctx; |
0b535adf | 607 | struct ahash_instance *inst; |
46309d89 | 608 | struct shash_alg *salg; |
b8a28251 | 609 | struct crypto_alg *alg; |
466a7b9e SM |
610 | u32 type = 0; |
611 | u32 mask = 0; | |
46309d89 | 612 | int err; |
b8a28251 | 613 | |
466a7b9e SM |
614 | cryptd_check_internal(tb, &type, &mask); |
615 | ||
616 | salg = shash_attr_alg(tb[1], type, mask); | |
46309d89 | 617 | if (IS_ERR(salg)) |
9cd899a3 | 618 | return PTR_ERR(salg); |
b8a28251 | 619 | |
46309d89 | 620 | alg = &salg->base; |
0b535adf HX |
621 | inst = cryptd_alloc_instance(alg, ahash_instance_headroom(), |
622 | sizeof(*ctx)); | |
05ed8758 | 623 | err = PTR_ERR(inst); |
b8a28251 LH |
624 | if (IS_ERR(inst)) |
625 | goto out_put_alg; | |
626 | ||
0b535adf | 627 | ctx = ahash_instance_ctx(inst); |
46309d89 HX |
628 | ctx->queue = queue; |
629 | ||
0b535adf HX |
630 | err = crypto_init_shash_spawn(&ctx->spawn, salg, |
631 | ahash_crypto_instance(inst)); | |
46309d89 HX |
632 | if (err) |
633 | goto out_free_inst; | |
634 | ||
466a7b9e SM |
635 | type = CRYPTO_ALG_ASYNC; |
636 | if (alg->cra_flags & CRYPTO_ALG_INTERNAL) | |
637 | type |= CRYPTO_ALG_INTERNAL; | |
638 | inst->alg.halg.base.cra_flags = type; | |
b8a28251 | 639 | |
0b535adf HX |
640 | inst->alg.halg.digestsize = salg->digestsize; |
641 | inst->alg.halg.base.cra_ctxsize = sizeof(struct cryptd_hash_ctx); | |
b8a28251 | 642 | |
0b535adf HX |
643 | inst->alg.halg.base.cra_init = cryptd_hash_init_tfm; |
644 | inst->alg.halg.base.cra_exit = cryptd_hash_exit_tfm; | |
b8a28251 | 645 | |
0b535adf HX |
646 | inst->alg.init = cryptd_hash_init_enqueue; |
647 | inst->alg.update = cryptd_hash_update_enqueue; | |
648 | inst->alg.final = cryptd_hash_final_enqueue; | |
6fba00d1 HX |
649 | inst->alg.finup = cryptd_hash_finup_enqueue; |
650 | inst->alg.export = cryptd_hash_export; | |
651 | inst->alg.import = cryptd_hash_import; | |
0b535adf HX |
652 | inst->alg.setkey = cryptd_hash_setkey; |
653 | inst->alg.digest = cryptd_hash_digest_enqueue; | |
b8a28251 | 654 | |
0b535adf | 655 | err = ahash_register_instance(tmpl, inst); |
9cd899a3 HX |
656 | if (err) { |
657 | crypto_drop_shash(&ctx->spawn); | |
658 | out_free_inst: | |
659 | kfree(inst); | |
660 | } | |
661 | ||
b8a28251 LH |
662 | out_put_alg: |
663 | crypto_mod_put(alg); | |
9cd899a3 | 664 | return err; |
b8a28251 LH |
665 | } |
666 | ||
92b9876b HX |
667 | static int cryptd_aead_setkey(struct crypto_aead *parent, |
668 | const u8 *key, unsigned int keylen) | |
669 | { | |
670 | struct cryptd_aead_ctx *ctx = crypto_aead_ctx(parent); | |
671 | struct crypto_aead *child = ctx->child; | |
672 | ||
673 | return crypto_aead_setkey(child, key, keylen); | |
674 | } | |
675 | ||
676 | static int cryptd_aead_setauthsize(struct crypto_aead *parent, | |
677 | unsigned int authsize) | |
678 | { | |
679 | struct cryptd_aead_ctx *ctx = crypto_aead_ctx(parent); | |
680 | struct crypto_aead *child = ctx->child; | |
681 | ||
682 | return crypto_aead_setauthsize(child, authsize); | |
683 | } | |
684 | ||
298c926c AH |
685 | static void cryptd_aead_crypt(struct aead_request *req, |
686 | struct crypto_aead *child, | |
687 | int err, | |
688 | int (*crypt)(struct aead_request *req)) | |
689 | { | |
690 | struct cryptd_aead_request_ctx *rctx; | |
691 | rctx = aead_request_ctx(req); | |
692 | ||
693 | if (unlikely(err == -EINPROGRESS)) | |
694 | goto out; | |
695 | aead_request_set_tfm(req, child); | |
696 | err = crypt( req ); | |
697 | req->base.complete = rctx->complete; | |
698 | out: | |
699 | local_bh_disable(); | |
700 | rctx->complete(&req->base, err); | |
701 | local_bh_enable(); | |
702 | } | |
703 | ||
704 | static void cryptd_aead_encrypt(struct crypto_async_request *areq, int err) | |
705 | { | |
706 | struct cryptd_aead_ctx *ctx = crypto_tfm_ctx(areq->tfm); | |
707 | struct crypto_aead *child = ctx->child; | |
708 | struct aead_request *req; | |
709 | ||
710 | req = container_of(areq, struct aead_request, base); | |
711 | cryptd_aead_crypt(req, child, err, crypto_aead_crt(child)->encrypt); | |
712 | } | |
713 | ||
714 | static void cryptd_aead_decrypt(struct crypto_async_request *areq, int err) | |
715 | { | |
716 | struct cryptd_aead_ctx *ctx = crypto_tfm_ctx(areq->tfm); | |
717 | struct crypto_aead *child = ctx->child; | |
718 | struct aead_request *req; | |
719 | ||
720 | req = container_of(areq, struct aead_request, base); | |
721 | cryptd_aead_crypt(req, child, err, crypto_aead_crt(child)->decrypt); | |
722 | } | |
723 | ||
724 | static int cryptd_aead_enqueue(struct aead_request *req, | |
3e3dc25f | 725 | crypto_completion_t compl) |
298c926c AH |
726 | { |
727 | struct cryptd_aead_request_ctx *rctx = aead_request_ctx(req); | |
728 | struct crypto_aead *tfm = crypto_aead_reqtfm(req); | |
729 | struct cryptd_queue *queue = cryptd_get_queue(crypto_aead_tfm(tfm)); | |
730 | ||
731 | rctx->complete = req->base.complete; | |
3e3dc25f | 732 | req->base.complete = compl; |
298c926c AH |
733 | return cryptd_enqueue_request(queue, &req->base); |
734 | } | |
735 | ||
736 | static int cryptd_aead_encrypt_enqueue(struct aead_request *req) | |
737 | { | |
738 | return cryptd_aead_enqueue(req, cryptd_aead_encrypt ); | |
739 | } | |
740 | ||
741 | static int cryptd_aead_decrypt_enqueue(struct aead_request *req) | |
742 | { | |
743 | return cryptd_aead_enqueue(req, cryptd_aead_decrypt ); | |
744 | } | |
745 | ||
f614e546 | 746 | static int cryptd_aead_init_tfm(struct crypto_aead *tfm) |
298c926c | 747 | { |
f614e546 HX |
748 | struct aead_instance *inst = aead_alg_instance(tfm); |
749 | struct aead_instance_ctx *ictx = aead_instance_ctx(inst); | |
298c926c | 750 | struct crypto_aead_spawn *spawn = &ictx->aead_spawn; |
f614e546 | 751 | struct cryptd_aead_ctx *ctx = crypto_aead_ctx(tfm); |
298c926c AH |
752 | struct crypto_aead *cipher; |
753 | ||
754 | cipher = crypto_spawn_aead(spawn); | |
755 | if (IS_ERR(cipher)) | |
756 | return PTR_ERR(cipher); | |
757 | ||
298c926c | 758 | ctx->child = cipher; |
f614e546 | 759 | crypto_aead_set_reqsize(tfm, sizeof(struct cryptd_aead_request_ctx)); |
298c926c AH |
760 | return 0; |
761 | } | |
762 | ||
f614e546 | 763 | static void cryptd_aead_exit_tfm(struct crypto_aead *tfm) |
298c926c | 764 | { |
f614e546 | 765 | struct cryptd_aead_ctx *ctx = crypto_aead_ctx(tfm); |
298c926c AH |
766 | crypto_free_aead(ctx->child); |
767 | } | |
768 | ||
769 | static int cryptd_create_aead(struct crypto_template *tmpl, | |
770 | struct rtattr **tb, | |
771 | struct cryptd_queue *queue) | |
772 | { | |
773 | struct aead_instance_ctx *ctx; | |
f614e546 HX |
774 | struct aead_instance *inst; |
775 | struct aead_alg *alg; | |
9b8c456e HX |
776 | const char *name; |
777 | u32 type = 0; | |
778 | u32 mask = 0; | |
298c926c AH |
779 | int err; |
780 | ||
466a7b9e SM |
781 | cryptd_check_internal(tb, &type, &mask); |
782 | ||
9b8c456e HX |
783 | name = crypto_attr_alg_name(tb[1]); |
784 | if (IS_ERR(name)) | |
785 | return PTR_ERR(name); | |
298c926c | 786 | |
9b8c456e HX |
787 | inst = kzalloc(sizeof(*inst) + sizeof(*ctx), GFP_KERNEL); |
788 | if (!inst) | |
789 | return -ENOMEM; | |
298c926c | 790 | |
f614e546 | 791 | ctx = aead_instance_ctx(inst); |
298c926c AH |
792 | ctx->queue = queue; |
793 | ||
f614e546 | 794 | crypto_set_aead_spawn(&ctx->aead_spawn, aead_crypto_instance(inst)); |
9b8c456e | 795 | err = crypto_grab_aead(&ctx->aead_spawn, name, type, mask); |
298c926c AH |
796 | if (err) |
797 | goto out_free_inst; | |
798 | ||
f614e546 HX |
799 | alg = crypto_spawn_aead_alg(&ctx->aead_spawn); |
800 | err = cryptd_init_instance(aead_crypto_instance(inst), &alg->base); | |
9b8c456e HX |
801 | if (err) |
802 | goto out_drop_aead; | |
803 | ||
f614e546 HX |
804 | inst->alg.base.cra_flags = CRYPTO_ALG_ASYNC | |
805 | (alg->base.cra_flags & CRYPTO_ALG_INTERNAL); | |
806 | inst->alg.base.cra_ctxsize = sizeof(struct cryptd_aead_ctx); | |
298c926c | 807 | |
f614e546 HX |
808 | inst->alg.ivsize = crypto_aead_alg_ivsize(alg); |
809 | inst->alg.maxauthsize = crypto_aead_alg_maxauthsize(alg); | |
810 | ||
811 | inst->alg.init = cryptd_aead_init_tfm; | |
812 | inst->alg.exit = cryptd_aead_exit_tfm; | |
813 | inst->alg.setkey = cryptd_aead_setkey; | |
814 | inst->alg.setauthsize = cryptd_aead_setauthsize; | |
815 | inst->alg.encrypt = cryptd_aead_encrypt_enqueue; | |
816 | inst->alg.decrypt = cryptd_aead_decrypt_enqueue; | |
817 | ||
818 | err = aead_register_instance(tmpl, inst); | |
298c926c | 819 | if (err) { |
9b8c456e HX |
820 | out_drop_aead: |
821 | crypto_drop_aead(&ctx->aead_spawn); | |
298c926c AH |
822 | out_free_inst: |
823 | kfree(inst); | |
824 | } | |
298c926c AH |
825 | return err; |
826 | } | |
827 | ||
254eff77 | 828 | static struct cryptd_queue queue; |
124b53d0 | 829 | |
9cd899a3 | 830 | static int cryptd_create(struct crypto_template *tmpl, struct rtattr **tb) |
124b53d0 HX |
831 | { |
832 | struct crypto_attr_type *algt; | |
833 | ||
834 | algt = crypto_get_attr_type(tb); | |
835 | if (IS_ERR(algt)) | |
9cd899a3 | 836 | return PTR_ERR(algt); |
124b53d0 HX |
837 | |
838 | switch (algt->type & algt->mask & CRYPTO_ALG_TYPE_MASK) { | |
839 | case CRYPTO_ALG_TYPE_BLKCIPHER: | |
9cd899a3 | 840 | return cryptd_create_blkcipher(tmpl, tb, &queue); |
b8a28251 | 841 | case CRYPTO_ALG_TYPE_DIGEST: |
9cd899a3 | 842 | return cryptd_create_hash(tmpl, tb, &queue); |
298c926c AH |
843 | case CRYPTO_ALG_TYPE_AEAD: |
844 | return cryptd_create_aead(tmpl, tb, &queue); | |
124b53d0 HX |
845 | } |
846 | ||
9cd899a3 | 847 | return -EINVAL; |
124b53d0 HX |
848 | } |
849 | ||
850 | static void cryptd_free(struct crypto_instance *inst) | |
851 | { | |
852 | struct cryptd_instance_ctx *ctx = crypto_instance_ctx(inst); | |
0b535adf | 853 | struct hashd_instance_ctx *hctx = crypto_instance_ctx(inst); |
298c926c | 854 | struct aead_instance_ctx *aead_ctx = crypto_instance_ctx(inst); |
0b535adf HX |
855 | |
856 | switch (inst->alg.cra_flags & CRYPTO_ALG_TYPE_MASK) { | |
857 | case CRYPTO_ALG_TYPE_AHASH: | |
858 | crypto_drop_shash(&hctx->spawn); | |
859 | kfree(ahash_instance(inst)); | |
860 | return; | |
298c926c | 861 | case CRYPTO_ALG_TYPE_AEAD: |
f614e546 HX |
862 | crypto_drop_aead(&aead_ctx->aead_spawn); |
863 | kfree(aead_instance(inst)); | |
298c926c AH |
864 | return; |
865 | default: | |
866 | crypto_drop_spawn(&ctx->spawn); | |
867 | kfree(inst); | |
0b535adf | 868 | } |
124b53d0 HX |
869 | } |
870 | ||
871 | static struct crypto_template cryptd_tmpl = { | |
872 | .name = "cryptd", | |
9cd899a3 | 873 | .create = cryptd_create, |
124b53d0 HX |
874 | .free = cryptd_free, |
875 | .module = THIS_MODULE, | |
876 | }; | |
877 | ||
1cac2cbc HY |
878 | struct cryptd_ablkcipher *cryptd_alloc_ablkcipher(const char *alg_name, |
879 | u32 type, u32 mask) | |
880 | { | |
881 | char cryptd_alg_name[CRYPTO_MAX_ALG_NAME]; | |
505fd21d | 882 | struct crypto_tfm *tfm; |
1cac2cbc HY |
883 | |
884 | if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME, | |
885 | "cryptd(%s)", alg_name) >= CRYPTO_MAX_ALG_NAME) | |
886 | return ERR_PTR(-EINVAL); | |
505fd21d HY |
887 | type &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV); |
888 | type |= CRYPTO_ALG_TYPE_BLKCIPHER; | |
889 | mask &= ~CRYPTO_ALG_TYPE_MASK; | |
890 | mask |= (CRYPTO_ALG_GENIV | CRYPTO_ALG_TYPE_BLKCIPHER_MASK); | |
891 | tfm = crypto_alloc_base(cryptd_alg_name, type, mask); | |
1cac2cbc HY |
892 | if (IS_ERR(tfm)) |
893 | return ERR_CAST(tfm); | |
505fd21d HY |
894 | if (tfm->__crt_alg->cra_module != THIS_MODULE) { |
895 | crypto_free_tfm(tfm); | |
1cac2cbc HY |
896 | return ERR_PTR(-EINVAL); |
897 | } | |
898 | ||
505fd21d | 899 | return __cryptd_ablkcipher_cast(__crypto_ablkcipher_cast(tfm)); |
1cac2cbc HY |
900 | } |
901 | EXPORT_SYMBOL_GPL(cryptd_alloc_ablkcipher); | |
902 | ||
903 | struct crypto_blkcipher *cryptd_ablkcipher_child(struct cryptd_ablkcipher *tfm) | |
904 | { | |
905 | struct cryptd_blkcipher_ctx *ctx = crypto_ablkcipher_ctx(&tfm->base); | |
906 | return ctx->child; | |
907 | } | |
908 | EXPORT_SYMBOL_GPL(cryptd_ablkcipher_child); | |
909 | ||
910 | void cryptd_free_ablkcipher(struct cryptd_ablkcipher *tfm) | |
911 | { | |
912 | crypto_free_ablkcipher(&tfm->base); | |
913 | } | |
914 | EXPORT_SYMBOL_GPL(cryptd_free_ablkcipher); | |
915 | ||
ace13663 HY |
916 | struct cryptd_ahash *cryptd_alloc_ahash(const char *alg_name, |
917 | u32 type, u32 mask) | |
918 | { | |
919 | char cryptd_alg_name[CRYPTO_MAX_ALG_NAME]; | |
920 | struct crypto_ahash *tfm; | |
921 | ||
922 | if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME, | |
923 | "cryptd(%s)", alg_name) >= CRYPTO_MAX_ALG_NAME) | |
924 | return ERR_PTR(-EINVAL); | |
925 | tfm = crypto_alloc_ahash(cryptd_alg_name, type, mask); | |
926 | if (IS_ERR(tfm)) | |
927 | return ERR_CAST(tfm); | |
928 | if (tfm->base.__crt_alg->cra_module != THIS_MODULE) { | |
929 | crypto_free_ahash(tfm); | |
930 | return ERR_PTR(-EINVAL); | |
931 | } | |
932 | ||
933 | return __cryptd_ahash_cast(tfm); | |
934 | } | |
935 | EXPORT_SYMBOL_GPL(cryptd_alloc_ahash); | |
936 | ||
937 | struct crypto_shash *cryptd_ahash_child(struct cryptd_ahash *tfm) | |
938 | { | |
939 | struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(&tfm->base); | |
940 | ||
941 | return ctx->child; | |
942 | } | |
943 | EXPORT_SYMBOL_GPL(cryptd_ahash_child); | |
944 | ||
0e1227d3 HY |
945 | struct shash_desc *cryptd_shash_desc(struct ahash_request *req) |
946 | { | |
947 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); | |
948 | return &rctx->desc; | |
949 | } | |
950 | EXPORT_SYMBOL_GPL(cryptd_shash_desc); | |
951 | ||
ace13663 HY |
952 | void cryptd_free_ahash(struct cryptd_ahash *tfm) |
953 | { | |
954 | crypto_free_ahash(&tfm->base); | |
955 | } | |
956 | EXPORT_SYMBOL_GPL(cryptd_free_ahash); | |
957 | ||
298c926c AH |
958 | struct cryptd_aead *cryptd_alloc_aead(const char *alg_name, |
959 | u32 type, u32 mask) | |
960 | { | |
961 | char cryptd_alg_name[CRYPTO_MAX_ALG_NAME]; | |
962 | struct crypto_aead *tfm; | |
963 | ||
964 | if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME, | |
965 | "cryptd(%s)", alg_name) >= CRYPTO_MAX_ALG_NAME) | |
966 | return ERR_PTR(-EINVAL); | |
967 | tfm = crypto_alloc_aead(cryptd_alg_name, type, mask); | |
968 | if (IS_ERR(tfm)) | |
969 | return ERR_CAST(tfm); | |
970 | if (tfm->base.__crt_alg->cra_module != THIS_MODULE) { | |
971 | crypto_free_aead(tfm); | |
972 | return ERR_PTR(-EINVAL); | |
973 | } | |
974 | return __cryptd_aead_cast(tfm); | |
975 | } | |
976 | EXPORT_SYMBOL_GPL(cryptd_alloc_aead); | |
977 | ||
978 | struct crypto_aead *cryptd_aead_child(struct cryptd_aead *tfm) | |
979 | { | |
980 | struct cryptd_aead_ctx *ctx; | |
981 | ctx = crypto_aead_ctx(&tfm->base); | |
982 | return ctx->child; | |
983 | } | |
984 | EXPORT_SYMBOL_GPL(cryptd_aead_child); | |
985 | ||
986 | void cryptd_free_aead(struct cryptd_aead *tfm) | |
987 | { | |
988 | crypto_free_aead(&tfm->base); | |
989 | } | |
990 | EXPORT_SYMBOL_GPL(cryptd_free_aead); | |
991 | ||
124b53d0 HX |
992 | static int __init cryptd_init(void) |
993 | { | |
994 | int err; | |
995 | ||
254eff77 | 996 | err = cryptd_init_queue(&queue, CRYPTD_MAX_CPU_QLEN); |
124b53d0 HX |
997 | if (err) |
998 | return err; | |
999 | ||
1000 | err = crypto_register_template(&cryptd_tmpl); | |
1001 | if (err) | |
254eff77 | 1002 | cryptd_fini_queue(&queue); |
124b53d0 HX |
1003 | |
1004 | return err; | |
1005 | } | |
1006 | ||
1007 | static void __exit cryptd_exit(void) | |
1008 | { | |
254eff77 | 1009 | cryptd_fini_queue(&queue); |
124b53d0 HX |
1010 | crypto_unregister_template(&cryptd_tmpl); |
1011 | } | |
1012 | ||
b2bac6ac | 1013 | subsys_initcall(cryptd_init); |
124b53d0 HX |
1014 | module_exit(cryptd_exit); |
1015 | ||
1016 | MODULE_LICENSE("GPL"); | |
1017 | MODULE_DESCRIPTION("Software async crypto daemon"); | |
4943ba16 | 1018 | MODULE_ALIAS_CRYPTO("cryptd"); |