Commit | Line | Data |
---|---|---|
2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
124b53d0 HX |
2 | /* |
3 | * Software async crypto daemon. | |
4 | * | |
5 | * Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au> | |
6 | * | |
298c926c AH |
7 | * Added AEAD support to cryptd. |
8 | * Authors: Tadeusz Struk (tadeusz.struk@intel.com) | |
9 | * Adrian Hoban <adrian.hoban@intel.com> | |
10 | * Gabriele Paoloni <gabriele.paoloni@intel.com> | |
11 | * Aidan O'Mahony (aidan.o.mahony@intel.com) | |
12 | * Copyright (c) 2010, Intel Corporation. | |
124b53d0 HX |
13 | */ |
14 | ||
18e33e6d | 15 | #include <crypto/internal/hash.h> |
298c926c | 16 | #include <crypto/internal/aead.h> |
4e0958d1 | 17 | #include <crypto/internal/skcipher.h> |
1cac2cbc | 18 | #include <crypto/cryptd.h> |
43b970fa | 19 | #include <linux/refcount.h> |
124b53d0 HX |
20 | #include <linux/err.h> |
21 | #include <linux/init.h> | |
22 | #include <linux/kernel.h> | |
124b53d0 HX |
23 | #include <linux/list.h> |
24 | #include <linux/module.h> | |
124b53d0 HX |
25 | #include <linux/scatterlist.h> |
26 | #include <linux/sched.h> | |
27 | #include <linux/slab.h> | |
3e56e168 | 28 | #include <linux/workqueue.h> |
124b53d0 | 29 | |
eaf356e4 | 30 | static unsigned int cryptd_max_cpu_qlen = 1000; |
c3a53605 JM |
31 | module_param(cryptd_max_cpu_qlen, uint, 0); |
32 | MODULE_PARM_DESC(cryptd_max_cpu_qlen, "Set cryptd Max queue depth"); | |
124b53d0 | 33 | |
3e56e168 EB |
34 | static struct workqueue_struct *cryptd_wq; |
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 | ||
4e0958d1 HX |
50 | struct skcipherd_instance_ctx { |
51 | struct crypto_skcipher_spawn spawn; | |
52 | struct cryptd_queue *queue; | |
53 | }; | |
54 | ||
46309d89 HX |
55 | struct hashd_instance_ctx { |
56 | struct crypto_shash_spawn spawn; | |
57 | struct cryptd_queue *queue; | |
58 | }; | |
59 | ||
298c926c AH |
60 | struct aead_instance_ctx { |
61 | struct crypto_aead_spawn aead_spawn; | |
62 | struct cryptd_queue *queue; | |
63 | }; | |
64 | ||
4e0958d1 | 65 | struct cryptd_skcipher_ctx { |
43b970fa | 66 | refcount_t refcnt; |
36b3875a | 67 | struct crypto_sync_skcipher *child; |
4e0958d1 HX |
68 | }; |
69 | ||
70 | struct cryptd_skcipher_request_ctx { | |
71 | crypto_completion_t complete; | |
72 | }; | |
73 | ||
b8a28251 | 74 | struct cryptd_hash_ctx { |
43b970fa | 75 | refcount_t refcnt; |
46309d89 | 76 | struct crypto_shash *child; |
b8a28251 LH |
77 | }; |
78 | ||
79 | struct cryptd_hash_request_ctx { | |
80 | crypto_completion_t complete; | |
46309d89 | 81 | struct shash_desc desc; |
b8a28251 | 82 | }; |
124b53d0 | 83 | |
298c926c | 84 | struct cryptd_aead_ctx { |
43b970fa | 85 | refcount_t refcnt; |
298c926c AH |
86 | struct crypto_aead *child; |
87 | }; | |
88 | ||
89 | struct cryptd_aead_request_ctx { | |
90 | crypto_completion_t complete; | |
91 | }; | |
92 | ||
254eff77 HY |
93 | static void cryptd_queue_worker(struct work_struct *work); |
94 | ||
95 | static int cryptd_init_queue(struct cryptd_queue *queue, | |
96 | unsigned int max_cpu_qlen) | |
97 | { | |
98 | int cpu; | |
99 | struct cryptd_cpu_queue *cpu_queue; | |
100 | ||
101 | queue->cpu_queue = alloc_percpu(struct cryptd_cpu_queue); | |
102 | if (!queue->cpu_queue) | |
103 | return -ENOMEM; | |
104 | for_each_possible_cpu(cpu) { | |
105 | cpu_queue = per_cpu_ptr(queue->cpu_queue, cpu); | |
106 | crypto_init_queue(&cpu_queue->queue, max_cpu_qlen); | |
107 | INIT_WORK(&cpu_queue->work, cryptd_queue_worker); | |
108 | } | |
c3a53605 | 109 | pr_info("cryptd: max_cpu_qlen set to %d\n", max_cpu_qlen); |
254eff77 HY |
110 | return 0; |
111 | } | |
112 | ||
113 | static void cryptd_fini_queue(struct cryptd_queue *queue) | |
114 | { | |
115 | int cpu; | |
116 | struct cryptd_cpu_queue *cpu_queue; | |
117 | ||
118 | for_each_possible_cpu(cpu) { | |
119 | cpu_queue = per_cpu_ptr(queue->cpu_queue, cpu); | |
120 | BUG_ON(cpu_queue->queue.qlen); | |
121 | } | |
122 | free_percpu(queue->cpu_queue); | |
123 | } | |
124 | ||
125 | static int cryptd_enqueue_request(struct cryptd_queue *queue, | |
126 | struct crypto_async_request *request) | |
127 | { | |
128 | int cpu, err; | |
129 | struct cryptd_cpu_queue *cpu_queue; | |
43b970fa | 130 | refcount_t *refcnt; |
254eff77 HY |
131 | |
132 | cpu = get_cpu(); | |
0b44f486 | 133 | cpu_queue = this_cpu_ptr(queue->cpu_queue); |
254eff77 | 134 | err = crypto_enqueue_request(&cpu_queue->queue, request); |
81760ea6 HX |
135 | |
136 | refcnt = crypto_tfm_ctx(request->tfm); | |
81760ea6 | 137 | |
6b80ea38 | 138 | if (err == -ENOSPC) |
81760ea6 HX |
139 | goto out_put_cpu; |
140 | ||
3e56e168 | 141 | queue_work_on(cpu, cryptd_wq, &cpu_queue->work); |
81760ea6 | 142 | |
43b970fa | 143 | if (!refcount_read(refcnt)) |
81760ea6 HX |
144 | goto out_put_cpu; |
145 | ||
43b970fa | 146 | refcount_inc(refcnt); |
81760ea6 HX |
147 | |
148 | out_put_cpu: | |
254eff77 HY |
149 | put_cpu(); |
150 | ||
151 | return err; | |
152 | } | |
153 | ||
154 | /* Called in workqueue context, do one real cryption work (via | |
155 | * req->complete) and reschedule itself if there are more work to | |
156 | * do. */ | |
157 | static void cryptd_queue_worker(struct work_struct *work) | |
158 | { | |
159 | struct cryptd_cpu_queue *cpu_queue; | |
160 | struct crypto_async_request *req, *backlog; | |
161 | ||
162 | cpu_queue = container_of(work, struct cryptd_cpu_queue, work); | |
9efade1b JK |
163 | /* |
164 | * Only handle one request at a time to avoid hogging crypto workqueue. | |
165 | * preempt_disable/enable is used to prevent being preempted by | |
166 | * cryptd_enqueue_request(). local_bh_disable/enable is used to prevent | |
167 | * cryptd_enqueue_request() being accessed from software interrupts. | |
168 | */ | |
169 | local_bh_disable(); | |
254eff77 HY |
170 | preempt_disable(); |
171 | backlog = crypto_get_backlog(&cpu_queue->queue); | |
172 | req = crypto_dequeue_request(&cpu_queue->queue); | |
173 | preempt_enable(); | |
9efade1b | 174 | local_bh_enable(); |
254eff77 HY |
175 | |
176 | if (!req) | |
177 | return; | |
178 | ||
179 | if (backlog) | |
180 | backlog->complete(backlog, -EINPROGRESS); | |
181 | req->complete(req, 0); | |
182 | ||
183 | if (cpu_queue->queue.qlen) | |
3e56e168 | 184 | queue_work(cryptd_wq, &cpu_queue->work); |
254eff77 HY |
185 | } |
186 | ||
187 | static inline struct cryptd_queue *cryptd_get_queue(struct crypto_tfm *tfm) | |
124b53d0 HX |
188 | { |
189 | struct crypto_instance *inst = crypto_tfm_alg_instance(tfm); | |
190 | struct cryptd_instance_ctx *ictx = crypto_instance_ctx(inst); | |
254eff77 | 191 | return ictx->queue; |
124b53d0 HX |
192 | } |
193 | ||
466a7b9e SM |
194 | static inline void cryptd_check_internal(struct rtattr **tb, u32 *type, |
195 | u32 *mask) | |
196 | { | |
197 | struct crypto_attr_type *algt; | |
198 | ||
199 | algt = crypto_get_attr_type(tb); | |
200 | if (IS_ERR(algt)) | |
201 | return; | |
f6da3205 | 202 | |
5e4b8c1f HX |
203 | *type |= algt->type & CRYPTO_ALG_INTERNAL; |
204 | *mask |= algt->mask & CRYPTO_ALG_INTERNAL; | |
466a7b9e SM |
205 | } |
206 | ||
9b8c456e HX |
207 | static int cryptd_init_instance(struct crypto_instance *inst, |
208 | struct crypto_alg *alg) | |
209 | { | |
210 | if (snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME, | |
211 | "cryptd(%s)", | |
212 | alg->cra_driver_name) >= CRYPTO_MAX_ALG_NAME) | |
213 | return -ENAMETOOLONG; | |
214 | ||
215 | memcpy(inst->alg.cra_name, alg->cra_name, CRYPTO_MAX_ALG_NAME); | |
216 | ||
217 | inst->alg.cra_priority = alg->cra_priority + 50; | |
218 | inst->alg.cra_blocksize = alg->cra_blocksize; | |
219 | inst->alg.cra_alignmask = alg->cra_alignmask; | |
220 | ||
221 | return 0; | |
222 | } | |
223 | ||
0b535adf HX |
224 | static void *cryptd_alloc_instance(struct crypto_alg *alg, unsigned int head, |
225 | unsigned int tail) | |
124b53d0 | 226 | { |
0b535adf | 227 | char *p; |
124b53d0 | 228 | struct crypto_instance *inst; |
124b53d0 HX |
229 | int err; |
230 | ||
0b535adf HX |
231 | p = kzalloc(head + sizeof(*inst) + tail, GFP_KERNEL); |
232 | if (!p) | |
233 | return ERR_PTR(-ENOMEM); | |
234 | ||
235 | inst = (void *)(p + head); | |
124b53d0 | 236 | |
9b8c456e HX |
237 | err = cryptd_init_instance(inst, alg); |
238 | if (err) | |
124b53d0 HX |
239 | goto out_free_inst; |
240 | ||
124b53d0 | 241 | out: |
0b535adf | 242 | return p; |
124b53d0 HX |
243 | |
244 | out_free_inst: | |
0b535adf HX |
245 | kfree(p); |
246 | p = ERR_PTR(err); | |
124b53d0 HX |
247 | goto out; |
248 | } | |
249 | ||
4e0958d1 HX |
250 | static int cryptd_skcipher_setkey(struct crypto_skcipher *parent, |
251 | const u8 *key, unsigned int keylen) | |
252 | { | |
253 | struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(parent); | |
36b3875a | 254 | struct crypto_sync_skcipher *child = ctx->child; |
4e0958d1 | 255 | |
36b3875a KC |
256 | crypto_sync_skcipher_clear_flags(child, CRYPTO_TFM_REQ_MASK); |
257 | crypto_sync_skcipher_set_flags(child, | |
258 | crypto_skcipher_get_flags(parent) & | |
4e0958d1 | 259 | CRYPTO_TFM_REQ_MASK); |
af5034e8 | 260 | return crypto_sync_skcipher_setkey(child, key, keylen); |
4e0958d1 HX |
261 | } |
262 | ||
263 | static void cryptd_skcipher_complete(struct skcipher_request *req, int err) | |
264 | { | |
265 | struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); | |
266 | struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(tfm); | |
267 | struct cryptd_skcipher_request_ctx *rctx = skcipher_request_ctx(req); | |
43b970fa | 268 | int refcnt = refcount_read(&ctx->refcnt); |
4e0958d1 HX |
269 | |
270 | local_bh_disable(); | |
271 | rctx->complete(&req->base, err); | |
272 | local_bh_enable(); | |
273 | ||
43b970fa | 274 | if (err != -EINPROGRESS && refcnt && refcount_dec_and_test(&ctx->refcnt)) |
4e0958d1 HX |
275 | crypto_free_skcipher(tfm); |
276 | } | |
277 | ||
278 | static void cryptd_skcipher_encrypt(struct crypto_async_request *base, | |
279 | int err) | |
280 | { | |
281 | struct skcipher_request *req = skcipher_request_cast(base); | |
282 | struct cryptd_skcipher_request_ctx *rctx = skcipher_request_ctx(req); | |
283 | struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); | |
284 | struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(tfm); | |
36b3875a KC |
285 | struct crypto_sync_skcipher *child = ctx->child; |
286 | SYNC_SKCIPHER_REQUEST_ON_STACK(subreq, child); | |
4e0958d1 HX |
287 | |
288 | if (unlikely(err == -EINPROGRESS)) | |
289 | goto out; | |
290 | ||
36b3875a | 291 | skcipher_request_set_sync_tfm(subreq, child); |
4e0958d1 HX |
292 | skcipher_request_set_callback(subreq, CRYPTO_TFM_REQ_MAY_SLEEP, |
293 | NULL, NULL); | |
294 | skcipher_request_set_crypt(subreq, req->src, req->dst, req->cryptlen, | |
295 | req->iv); | |
296 | ||
297 | err = crypto_skcipher_encrypt(subreq); | |
298 | skcipher_request_zero(subreq); | |
299 | ||
300 | req->base.complete = rctx->complete; | |
301 | ||
302 | out: | |
303 | cryptd_skcipher_complete(req, err); | |
304 | } | |
305 | ||
306 | static void cryptd_skcipher_decrypt(struct crypto_async_request *base, | |
307 | int err) | |
308 | { | |
309 | struct skcipher_request *req = skcipher_request_cast(base); | |
310 | struct cryptd_skcipher_request_ctx *rctx = skcipher_request_ctx(req); | |
311 | struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); | |
312 | struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(tfm); | |
36b3875a KC |
313 | struct crypto_sync_skcipher *child = ctx->child; |
314 | SYNC_SKCIPHER_REQUEST_ON_STACK(subreq, child); | |
4e0958d1 HX |
315 | |
316 | if (unlikely(err == -EINPROGRESS)) | |
317 | goto out; | |
318 | ||
36b3875a | 319 | skcipher_request_set_sync_tfm(subreq, child); |
4e0958d1 HX |
320 | skcipher_request_set_callback(subreq, CRYPTO_TFM_REQ_MAY_SLEEP, |
321 | NULL, NULL); | |
322 | skcipher_request_set_crypt(subreq, req->src, req->dst, req->cryptlen, | |
323 | req->iv); | |
324 | ||
325 | err = crypto_skcipher_decrypt(subreq); | |
326 | skcipher_request_zero(subreq); | |
327 | ||
328 | req->base.complete = rctx->complete; | |
329 | ||
330 | out: | |
331 | cryptd_skcipher_complete(req, err); | |
332 | } | |
333 | ||
334 | static int cryptd_skcipher_enqueue(struct skcipher_request *req, | |
335 | crypto_completion_t compl) | |
336 | { | |
337 | struct cryptd_skcipher_request_ctx *rctx = skcipher_request_ctx(req); | |
338 | struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); | |
339 | struct cryptd_queue *queue; | |
340 | ||
341 | queue = cryptd_get_queue(crypto_skcipher_tfm(tfm)); | |
342 | rctx->complete = req->base.complete; | |
343 | req->base.complete = compl; | |
344 | ||
345 | return cryptd_enqueue_request(queue, &req->base); | |
346 | } | |
347 | ||
348 | static int cryptd_skcipher_encrypt_enqueue(struct skcipher_request *req) | |
349 | { | |
350 | return cryptd_skcipher_enqueue(req, cryptd_skcipher_encrypt); | |
351 | } | |
352 | ||
353 | static int cryptd_skcipher_decrypt_enqueue(struct skcipher_request *req) | |
354 | { | |
355 | return cryptd_skcipher_enqueue(req, cryptd_skcipher_decrypt); | |
356 | } | |
357 | ||
358 | static int cryptd_skcipher_init_tfm(struct crypto_skcipher *tfm) | |
359 | { | |
360 | struct skcipher_instance *inst = skcipher_alg_instance(tfm); | |
361 | struct skcipherd_instance_ctx *ictx = skcipher_instance_ctx(inst); | |
362 | struct crypto_skcipher_spawn *spawn = &ictx->spawn; | |
363 | struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(tfm); | |
364 | struct crypto_skcipher *cipher; | |
365 | ||
366 | cipher = crypto_spawn_skcipher(spawn); | |
367 | if (IS_ERR(cipher)) | |
368 | return PTR_ERR(cipher); | |
369 | ||
36b3875a | 370 | ctx->child = (struct crypto_sync_skcipher *)cipher; |
4e0958d1 HX |
371 | crypto_skcipher_set_reqsize( |
372 | tfm, sizeof(struct cryptd_skcipher_request_ctx)); | |
373 | return 0; | |
374 | } | |
375 | ||
376 | static void cryptd_skcipher_exit_tfm(struct crypto_skcipher *tfm) | |
377 | { | |
378 | struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(tfm); | |
379 | ||
36b3875a | 380 | crypto_free_sync_skcipher(ctx->child); |
4e0958d1 HX |
381 | } |
382 | ||
383 | static void cryptd_skcipher_free(struct skcipher_instance *inst) | |
384 | { | |
385 | struct skcipherd_instance_ctx *ctx = skcipher_instance_ctx(inst); | |
386 | ||
387 | crypto_drop_skcipher(&ctx->spawn); | |
1a0fad63 | 388 | kfree(inst); |
4e0958d1 HX |
389 | } |
390 | ||
391 | static int cryptd_create_skcipher(struct crypto_template *tmpl, | |
392 | struct rtattr **tb, | |
393 | struct cryptd_queue *queue) | |
394 | { | |
395 | struct skcipherd_instance_ctx *ctx; | |
396 | struct skcipher_instance *inst; | |
397 | struct skcipher_alg *alg; | |
398 | const char *name; | |
399 | u32 type; | |
400 | u32 mask; | |
401 | int err; | |
402 | ||
403 | type = 0; | |
404 | mask = CRYPTO_ALG_ASYNC; | |
405 | ||
406 | cryptd_check_internal(tb, &type, &mask); | |
407 | ||
408 | name = crypto_attr_alg_name(tb[1]); | |
409 | if (IS_ERR(name)) | |
410 | return PTR_ERR(name); | |
411 | ||
412 | inst = kzalloc(sizeof(*inst) + sizeof(*ctx), GFP_KERNEL); | |
413 | if (!inst) | |
414 | return -ENOMEM; | |
415 | ||
416 | ctx = skcipher_instance_ctx(inst); | |
417 | ctx->queue = queue; | |
418 | ||
b9f76ddd EB |
419 | err = crypto_grab_skcipher(&ctx->spawn, skcipher_crypto_instance(inst), |
420 | name, type, mask); | |
4e0958d1 HX |
421 | if (err) |
422 | goto out_free_inst; | |
423 | ||
424 | alg = crypto_spawn_skcipher_alg(&ctx->spawn); | |
425 | err = cryptd_init_instance(skcipher_crypto_instance(inst), &alg->base); | |
426 | if (err) | |
427 | goto out_drop_skcipher; | |
428 | ||
429 | inst->alg.base.cra_flags = CRYPTO_ALG_ASYNC | | |
430 | (alg->base.cra_flags & CRYPTO_ALG_INTERNAL); | |
431 | ||
432 | inst->alg.ivsize = crypto_skcipher_alg_ivsize(alg); | |
433 | inst->alg.chunksize = crypto_skcipher_alg_chunksize(alg); | |
434 | inst->alg.min_keysize = crypto_skcipher_alg_min_keysize(alg); | |
435 | inst->alg.max_keysize = crypto_skcipher_alg_max_keysize(alg); | |
436 | ||
437 | inst->alg.base.cra_ctxsize = sizeof(struct cryptd_skcipher_ctx); | |
438 | ||
439 | inst->alg.init = cryptd_skcipher_init_tfm; | |
440 | inst->alg.exit = cryptd_skcipher_exit_tfm; | |
441 | ||
442 | inst->alg.setkey = cryptd_skcipher_setkey; | |
443 | inst->alg.encrypt = cryptd_skcipher_encrypt_enqueue; | |
444 | inst->alg.decrypt = cryptd_skcipher_decrypt_enqueue; | |
445 | ||
446 | inst->free = cryptd_skcipher_free; | |
447 | ||
448 | err = skcipher_register_instance(tmpl, inst); | |
449 | if (err) { | |
450 | out_drop_skcipher: | |
451 | crypto_drop_skcipher(&ctx->spawn); | |
452 | out_free_inst: | |
453 | kfree(inst); | |
454 | } | |
455 | return err; | |
456 | } | |
457 | ||
b8a28251 LH |
458 | static int cryptd_hash_init_tfm(struct crypto_tfm *tfm) |
459 | { | |
460 | struct crypto_instance *inst = crypto_tfm_alg_instance(tfm); | |
46309d89 HX |
461 | struct hashd_instance_ctx *ictx = crypto_instance_ctx(inst); |
462 | struct crypto_shash_spawn *spawn = &ictx->spawn; | |
b8a28251 | 463 | struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(tfm); |
46309d89 | 464 | struct crypto_shash *hash; |
b8a28251 | 465 | |
46309d89 HX |
466 | hash = crypto_spawn_shash(spawn); |
467 | if (IS_ERR(hash)) | |
468 | return PTR_ERR(hash); | |
b8a28251 | 469 | |
46309d89 | 470 | ctx->child = hash; |
0d6669e2 HX |
471 | crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm), |
472 | sizeof(struct cryptd_hash_request_ctx) + | |
473 | crypto_shash_descsize(hash)); | |
b8a28251 LH |
474 | return 0; |
475 | } | |
476 | ||
477 | static void cryptd_hash_exit_tfm(struct crypto_tfm *tfm) | |
478 | { | |
479 | struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(tfm); | |
b8a28251 | 480 | |
46309d89 | 481 | crypto_free_shash(ctx->child); |
b8a28251 LH |
482 | } |
483 | ||
484 | static int cryptd_hash_setkey(struct crypto_ahash *parent, | |
485 | const u8 *key, unsigned int keylen) | |
486 | { | |
487 | struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(parent); | |
46309d89 | 488 | struct crypto_shash *child = ctx->child; |
b8a28251 | 489 | |
46309d89 HX |
490 | crypto_shash_clear_flags(child, CRYPTO_TFM_REQ_MASK); |
491 | crypto_shash_set_flags(child, crypto_ahash_get_flags(parent) & | |
492 | CRYPTO_TFM_REQ_MASK); | |
af5034e8 | 493 | return crypto_shash_setkey(child, key, keylen); |
b8a28251 LH |
494 | } |
495 | ||
496 | static int cryptd_hash_enqueue(struct ahash_request *req, | |
3e3dc25f | 497 | crypto_completion_t compl) |
b8a28251 LH |
498 | { |
499 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); | |
500 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); | |
254eff77 HY |
501 | struct cryptd_queue *queue = |
502 | cryptd_get_queue(crypto_ahash_tfm(tfm)); | |
b8a28251 LH |
503 | |
504 | rctx->complete = req->base.complete; | |
3e3dc25f | 505 | req->base.complete = compl; |
b8a28251 | 506 | |
254eff77 | 507 | return cryptd_enqueue_request(queue, &req->base); |
b8a28251 LH |
508 | } |
509 | ||
81760ea6 HX |
510 | static void cryptd_hash_complete(struct ahash_request *req, int err) |
511 | { | |
512 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); | |
513 | struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(tfm); | |
514 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); | |
43b970fa | 515 | int refcnt = refcount_read(&ctx->refcnt); |
81760ea6 HX |
516 | |
517 | local_bh_disable(); | |
518 | rctx->complete(&req->base, err); | |
519 | local_bh_enable(); | |
520 | ||
43b970fa | 521 | if (err != -EINPROGRESS && refcnt && refcount_dec_and_test(&ctx->refcnt)) |
81760ea6 HX |
522 | crypto_free_ahash(tfm); |
523 | } | |
524 | ||
b8a28251 LH |
525 | static void cryptd_hash_init(struct crypto_async_request *req_async, int err) |
526 | { | |
46309d89 HX |
527 | struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(req_async->tfm); |
528 | struct crypto_shash *child = ctx->child; | |
529 | struct ahash_request *req = ahash_request_cast(req_async); | |
530 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); | |
531 | struct shash_desc *desc = &rctx->desc; | |
b8a28251 LH |
532 | |
533 | if (unlikely(err == -EINPROGRESS)) | |
534 | goto out; | |
535 | ||
46309d89 | 536 | desc->tfm = child; |
b8a28251 | 537 | |
46309d89 | 538 | err = crypto_shash_init(desc); |
b8a28251 LH |
539 | |
540 | req->base.complete = rctx->complete; | |
541 | ||
542 | out: | |
81760ea6 | 543 | cryptd_hash_complete(req, err); |
b8a28251 LH |
544 | } |
545 | ||
546 | static int cryptd_hash_init_enqueue(struct ahash_request *req) | |
547 | { | |
548 | return cryptd_hash_enqueue(req, cryptd_hash_init); | |
549 | } | |
550 | ||
551 | static void cryptd_hash_update(struct crypto_async_request *req_async, int err) | |
552 | { | |
46309d89 | 553 | struct ahash_request *req = ahash_request_cast(req_async); |
b8a28251 | 554 | struct cryptd_hash_request_ctx *rctx; |
b8a28251 LH |
555 | |
556 | rctx = ahash_request_ctx(req); | |
557 | ||
558 | if (unlikely(err == -EINPROGRESS)) | |
559 | goto out; | |
560 | ||
46309d89 | 561 | err = shash_ahash_update(req, &rctx->desc); |
b8a28251 LH |
562 | |
563 | req->base.complete = rctx->complete; | |
564 | ||
565 | out: | |
81760ea6 | 566 | cryptd_hash_complete(req, err); |
b8a28251 LH |
567 | } |
568 | ||
569 | static int cryptd_hash_update_enqueue(struct ahash_request *req) | |
570 | { | |
571 | return cryptd_hash_enqueue(req, cryptd_hash_update); | |
572 | } | |
573 | ||
574 | static void cryptd_hash_final(struct crypto_async_request *req_async, int err) | |
575 | { | |
46309d89 HX |
576 | struct ahash_request *req = ahash_request_cast(req_async); |
577 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); | |
b8a28251 LH |
578 | |
579 | if (unlikely(err == -EINPROGRESS)) | |
580 | goto out; | |
581 | ||
46309d89 | 582 | err = crypto_shash_final(&rctx->desc, req->result); |
b8a28251 LH |
583 | |
584 | req->base.complete = rctx->complete; | |
585 | ||
586 | out: | |
81760ea6 | 587 | cryptd_hash_complete(req, err); |
b8a28251 LH |
588 | } |
589 | ||
590 | static int cryptd_hash_final_enqueue(struct ahash_request *req) | |
591 | { | |
592 | return cryptd_hash_enqueue(req, cryptd_hash_final); | |
593 | } | |
594 | ||
6fba00d1 HX |
595 | static void cryptd_hash_finup(struct crypto_async_request *req_async, int err) |
596 | { | |
597 | struct ahash_request *req = ahash_request_cast(req_async); | |
598 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); | |
599 | ||
600 | if (unlikely(err == -EINPROGRESS)) | |
601 | goto out; | |
602 | ||
603 | err = shash_ahash_finup(req, &rctx->desc); | |
604 | ||
605 | req->base.complete = rctx->complete; | |
606 | ||
607 | out: | |
81760ea6 | 608 | cryptd_hash_complete(req, err); |
6fba00d1 HX |
609 | } |
610 | ||
611 | static int cryptd_hash_finup_enqueue(struct ahash_request *req) | |
612 | { | |
613 | return cryptd_hash_enqueue(req, cryptd_hash_finup); | |
614 | } | |
615 | ||
b8a28251 LH |
616 | static void cryptd_hash_digest(struct crypto_async_request *req_async, int err) |
617 | { | |
46309d89 HX |
618 | struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(req_async->tfm); |
619 | struct crypto_shash *child = ctx->child; | |
620 | struct ahash_request *req = ahash_request_cast(req_async); | |
621 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); | |
622 | struct shash_desc *desc = &rctx->desc; | |
b8a28251 LH |
623 | |
624 | if (unlikely(err == -EINPROGRESS)) | |
625 | goto out; | |
626 | ||
46309d89 | 627 | desc->tfm = child; |
b8a28251 | 628 | |
46309d89 | 629 | err = shash_ahash_digest(req, desc); |
b8a28251 LH |
630 | |
631 | req->base.complete = rctx->complete; | |
632 | ||
633 | out: | |
81760ea6 | 634 | cryptd_hash_complete(req, err); |
b8a28251 LH |
635 | } |
636 | ||
637 | static int cryptd_hash_digest_enqueue(struct ahash_request *req) | |
638 | { | |
639 | return cryptd_hash_enqueue(req, cryptd_hash_digest); | |
640 | } | |
641 | ||
6fba00d1 HX |
642 | static int cryptd_hash_export(struct ahash_request *req, void *out) |
643 | { | |
644 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); | |
645 | ||
646 | return crypto_shash_export(&rctx->desc, out); | |
647 | } | |
648 | ||
649 | static int cryptd_hash_import(struct ahash_request *req, const void *in) | |
650 | { | |
0bd22235 AB |
651 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); |
652 | struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(tfm); | |
653 | struct shash_desc *desc = cryptd_shash_desc(req); | |
654 | ||
655 | desc->tfm = ctx->child; | |
6fba00d1 | 656 | |
0bd22235 | 657 | return crypto_shash_import(desc, in); |
6fba00d1 HX |
658 | } |
659 | ||
9cd899a3 HX |
660 | static int cryptd_create_hash(struct crypto_template *tmpl, struct rtattr **tb, |
661 | struct cryptd_queue *queue) | |
b8a28251 | 662 | { |
46309d89 | 663 | struct hashd_instance_ctx *ctx; |
0b535adf | 664 | struct ahash_instance *inst; |
46309d89 | 665 | struct shash_alg *salg; |
b8a28251 | 666 | struct crypto_alg *alg; |
466a7b9e SM |
667 | u32 type = 0; |
668 | u32 mask = 0; | |
46309d89 | 669 | int err; |
b8a28251 | 670 | |
466a7b9e SM |
671 | cryptd_check_internal(tb, &type, &mask); |
672 | ||
673 | salg = shash_attr_alg(tb[1], type, mask); | |
46309d89 | 674 | if (IS_ERR(salg)) |
9cd899a3 | 675 | return PTR_ERR(salg); |
b8a28251 | 676 | |
46309d89 | 677 | alg = &salg->base; |
0b535adf HX |
678 | inst = cryptd_alloc_instance(alg, ahash_instance_headroom(), |
679 | sizeof(*ctx)); | |
05ed8758 | 680 | err = PTR_ERR(inst); |
b8a28251 LH |
681 | if (IS_ERR(inst)) |
682 | goto out_put_alg; | |
683 | ||
0b535adf | 684 | ctx = ahash_instance_ctx(inst); |
46309d89 HX |
685 | ctx->queue = queue; |
686 | ||
0b535adf HX |
687 | err = crypto_init_shash_spawn(&ctx->spawn, salg, |
688 | ahash_crypto_instance(inst)); | |
46309d89 HX |
689 | if (err) |
690 | goto out_free_inst; | |
691 | ||
a208fa8f EB |
692 | inst->alg.halg.base.cra_flags = CRYPTO_ALG_ASYNC | |
693 | (alg->cra_flags & (CRYPTO_ALG_INTERNAL | | |
694 | CRYPTO_ALG_OPTIONAL_KEY)); | |
b8a28251 | 695 | |
0b535adf | 696 | inst->alg.halg.digestsize = salg->digestsize; |
1a078340 | 697 | inst->alg.halg.statesize = salg->statesize; |
0b535adf | 698 | inst->alg.halg.base.cra_ctxsize = sizeof(struct cryptd_hash_ctx); |
b8a28251 | 699 | |
0b535adf HX |
700 | inst->alg.halg.base.cra_init = cryptd_hash_init_tfm; |
701 | inst->alg.halg.base.cra_exit = cryptd_hash_exit_tfm; | |
b8a28251 | 702 | |
0b535adf HX |
703 | inst->alg.init = cryptd_hash_init_enqueue; |
704 | inst->alg.update = cryptd_hash_update_enqueue; | |
705 | inst->alg.final = cryptd_hash_final_enqueue; | |
6fba00d1 HX |
706 | inst->alg.finup = cryptd_hash_finup_enqueue; |
707 | inst->alg.export = cryptd_hash_export; | |
708 | inst->alg.import = cryptd_hash_import; | |
841a3ff3 EB |
709 | if (crypto_shash_alg_has_setkey(salg)) |
710 | inst->alg.setkey = cryptd_hash_setkey; | |
0b535adf | 711 | inst->alg.digest = cryptd_hash_digest_enqueue; |
b8a28251 | 712 | |
0b535adf | 713 | err = ahash_register_instance(tmpl, inst); |
9cd899a3 HX |
714 | if (err) { |
715 | crypto_drop_shash(&ctx->spawn); | |
716 | out_free_inst: | |
717 | kfree(inst); | |
718 | } | |
719 | ||
b8a28251 LH |
720 | out_put_alg: |
721 | crypto_mod_put(alg); | |
9cd899a3 | 722 | return err; |
b8a28251 LH |
723 | } |
724 | ||
92b9876b HX |
725 | static int cryptd_aead_setkey(struct crypto_aead *parent, |
726 | const u8 *key, unsigned int keylen) | |
727 | { | |
728 | struct cryptd_aead_ctx *ctx = crypto_aead_ctx(parent); | |
729 | struct crypto_aead *child = ctx->child; | |
730 | ||
731 | return crypto_aead_setkey(child, key, keylen); | |
732 | } | |
733 | ||
734 | static int cryptd_aead_setauthsize(struct crypto_aead *parent, | |
735 | unsigned int authsize) | |
736 | { | |
737 | struct cryptd_aead_ctx *ctx = crypto_aead_ctx(parent); | |
738 | struct crypto_aead *child = ctx->child; | |
739 | ||
740 | return crypto_aead_setauthsize(child, authsize); | |
741 | } | |
742 | ||
298c926c AH |
743 | static void cryptd_aead_crypt(struct aead_request *req, |
744 | struct crypto_aead *child, | |
745 | int err, | |
746 | int (*crypt)(struct aead_request *req)) | |
747 | { | |
748 | struct cryptd_aead_request_ctx *rctx; | |
81760ea6 | 749 | struct cryptd_aead_ctx *ctx; |
ec9f2006 | 750 | crypto_completion_t compl; |
81760ea6 HX |
751 | struct crypto_aead *tfm; |
752 | int refcnt; | |
ec9f2006 | 753 | |
298c926c | 754 | rctx = aead_request_ctx(req); |
ec9f2006 | 755 | compl = rctx->complete; |
298c926c | 756 | |
31bd44e7 HX |
757 | tfm = crypto_aead_reqtfm(req); |
758 | ||
298c926c AH |
759 | if (unlikely(err == -EINPROGRESS)) |
760 | goto out; | |
761 | aead_request_set_tfm(req, child); | |
762 | err = crypt( req ); | |
81760ea6 | 763 | |
298c926c | 764 | out: |
81760ea6 | 765 | ctx = crypto_aead_ctx(tfm); |
43b970fa | 766 | refcnt = refcount_read(&ctx->refcnt); |
81760ea6 | 767 | |
298c926c | 768 | local_bh_disable(); |
ec9f2006 | 769 | compl(&req->base, err); |
298c926c | 770 | local_bh_enable(); |
81760ea6 | 771 | |
43b970fa | 772 | if (err != -EINPROGRESS && refcnt && refcount_dec_and_test(&ctx->refcnt)) |
81760ea6 | 773 | crypto_free_aead(tfm); |
298c926c AH |
774 | } |
775 | ||
776 | static void cryptd_aead_encrypt(struct crypto_async_request *areq, int err) | |
777 | { | |
778 | struct cryptd_aead_ctx *ctx = crypto_tfm_ctx(areq->tfm); | |
779 | struct crypto_aead *child = ctx->child; | |
780 | struct aead_request *req; | |
781 | ||
782 | req = container_of(areq, struct aead_request, base); | |
ba3749a7 | 783 | cryptd_aead_crypt(req, child, err, crypto_aead_alg(child)->encrypt); |
298c926c AH |
784 | } |
785 | ||
786 | static void cryptd_aead_decrypt(struct crypto_async_request *areq, int err) | |
787 | { | |
788 | struct cryptd_aead_ctx *ctx = crypto_tfm_ctx(areq->tfm); | |
789 | struct crypto_aead *child = ctx->child; | |
790 | struct aead_request *req; | |
791 | ||
792 | req = container_of(areq, struct aead_request, base); | |
ba3749a7 | 793 | cryptd_aead_crypt(req, child, err, crypto_aead_alg(child)->decrypt); |
298c926c AH |
794 | } |
795 | ||
796 | static int cryptd_aead_enqueue(struct aead_request *req, | |
3e3dc25f | 797 | crypto_completion_t compl) |
298c926c AH |
798 | { |
799 | struct cryptd_aead_request_ctx *rctx = aead_request_ctx(req); | |
800 | struct crypto_aead *tfm = crypto_aead_reqtfm(req); | |
801 | struct cryptd_queue *queue = cryptd_get_queue(crypto_aead_tfm(tfm)); | |
802 | ||
803 | rctx->complete = req->base.complete; | |
3e3dc25f | 804 | req->base.complete = compl; |
298c926c AH |
805 | return cryptd_enqueue_request(queue, &req->base); |
806 | } | |
807 | ||
808 | static int cryptd_aead_encrypt_enqueue(struct aead_request *req) | |
809 | { | |
810 | return cryptd_aead_enqueue(req, cryptd_aead_encrypt ); | |
811 | } | |
812 | ||
813 | static int cryptd_aead_decrypt_enqueue(struct aead_request *req) | |
814 | { | |
815 | return cryptd_aead_enqueue(req, cryptd_aead_decrypt ); | |
816 | } | |
817 | ||
f614e546 | 818 | static int cryptd_aead_init_tfm(struct crypto_aead *tfm) |
298c926c | 819 | { |
f614e546 HX |
820 | struct aead_instance *inst = aead_alg_instance(tfm); |
821 | struct aead_instance_ctx *ictx = aead_instance_ctx(inst); | |
298c926c | 822 | struct crypto_aead_spawn *spawn = &ictx->aead_spawn; |
f614e546 | 823 | struct cryptd_aead_ctx *ctx = crypto_aead_ctx(tfm); |
298c926c AH |
824 | struct crypto_aead *cipher; |
825 | ||
826 | cipher = crypto_spawn_aead(spawn); | |
827 | if (IS_ERR(cipher)) | |
828 | return PTR_ERR(cipher); | |
829 | ||
298c926c | 830 | ctx->child = cipher; |
ec9f2006 HX |
831 | crypto_aead_set_reqsize( |
832 | tfm, max((unsigned)sizeof(struct cryptd_aead_request_ctx), | |
833 | crypto_aead_reqsize(cipher))); | |
298c926c AH |
834 | return 0; |
835 | } | |
836 | ||
f614e546 | 837 | static void cryptd_aead_exit_tfm(struct crypto_aead *tfm) |
298c926c | 838 | { |
f614e546 | 839 | struct cryptd_aead_ctx *ctx = crypto_aead_ctx(tfm); |
298c926c AH |
840 | crypto_free_aead(ctx->child); |
841 | } | |
842 | ||
843 | static int cryptd_create_aead(struct crypto_template *tmpl, | |
844 | struct rtattr **tb, | |
845 | struct cryptd_queue *queue) | |
846 | { | |
847 | struct aead_instance_ctx *ctx; | |
f614e546 HX |
848 | struct aead_instance *inst; |
849 | struct aead_alg *alg; | |
9b8c456e HX |
850 | const char *name; |
851 | u32 type = 0; | |
ec9f2006 | 852 | u32 mask = CRYPTO_ALG_ASYNC; |
298c926c AH |
853 | int err; |
854 | ||
466a7b9e SM |
855 | cryptd_check_internal(tb, &type, &mask); |
856 | ||
9b8c456e HX |
857 | name = crypto_attr_alg_name(tb[1]); |
858 | if (IS_ERR(name)) | |
859 | return PTR_ERR(name); | |
298c926c | 860 | |
9b8c456e HX |
861 | inst = kzalloc(sizeof(*inst) + sizeof(*ctx), GFP_KERNEL); |
862 | if (!inst) | |
863 | return -ENOMEM; | |
298c926c | 864 | |
f614e546 | 865 | ctx = aead_instance_ctx(inst); |
298c926c AH |
866 | ctx->queue = queue; |
867 | ||
f614e546 | 868 | crypto_set_aead_spawn(&ctx->aead_spawn, aead_crypto_instance(inst)); |
9b8c456e | 869 | err = crypto_grab_aead(&ctx->aead_spawn, name, type, mask); |
298c926c AH |
870 | if (err) |
871 | goto out_free_inst; | |
872 | ||
f614e546 HX |
873 | alg = crypto_spawn_aead_alg(&ctx->aead_spawn); |
874 | err = cryptd_init_instance(aead_crypto_instance(inst), &alg->base); | |
9b8c456e HX |
875 | if (err) |
876 | goto out_drop_aead; | |
877 | ||
f614e546 | 878 | inst->alg.base.cra_flags = CRYPTO_ALG_ASYNC | |
5e4b8c1f | 879 | (alg->base.cra_flags & CRYPTO_ALG_INTERNAL); |
f614e546 | 880 | inst->alg.base.cra_ctxsize = sizeof(struct cryptd_aead_ctx); |
298c926c | 881 | |
f614e546 HX |
882 | inst->alg.ivsize = crypto_aead_alg_ivsize(alg); |
883 | inst->alg.maxauthsize = crypto_aead_alg_maxauthsize(alg); | |
884 | ||
885 | inst->alg.init = cryptd_aead_init_tfm; | |
886 | inst->alg.exit = cryptd_aead_exit_tfm; | |
887 | inst->alg.setkey = cryptd_aead_setkey; | |
888 | inst->alg.setauthsize = cryptd_aead_setauthsize; | |
889 | inst->alg.encrypt = cryptd_aead_encrypt_enqueue; | |
890 | inst->alg.decrypt = cryptd_aead_decrypt_enqueue; | |
891 | ||
892 | err = aead_register_instance(tmpl, inst); | |
298c926c | 893 | if (err) { |
9b8c456e HX |
894 | out_drop_aead: |
895 | crypto_drop_aead(&ctx->aead_spawn); | |
298c926c AH |
896 | out_free_inst: |
897 | kfree(inst); | |
898 | } | |
298c926c AH |
899 | return err; |
900 | } | |
901 | ||
254eff77 | 902 | static struct cryptd_queue queue; |
124b53d0 | 903 | |
9cd899a3 | 904 | static int cryptd_create(struct crypto_template *tmpl, struct rtattr **tb) |
124b53d0 HX |
905 | { |
906 | struct crypto_attr_type *algt; | |
907 | ||
908 | algt = crypto_get_attr_type(tb); | |
909 | if (IS_ERR(algt)) | |
9cd899a3 | 910 | return PTR_ERR(algt); |
124b53d0 HX |
911 | |
912 | switch (algt->type & algt->mask & CRYPTO_ALG_TYPE_MASK) { | |
c65058b7 | 913 | case CRYPTO_ALG_TYPE_SKCIPHER: |
4e0958d1 | 914 | return cryptd_create_skcipher(tmpl, tb, &queue); |
84ede58d | 915 | case CRYPTO_ALG_TYPE_HASH: |
9cd899a3 | 916 | return cryptd_create_hash(tmpl, tb, &queue); |
298c926c AH |
917 | case CRYPTO_ALG_TYPE_AEAD: |
918 | return cryptd_create_aead(tmpl, tb, &queue); | |
124b53d0 HX |
919 | } |
920 | ||
9cd899a3 | 921 | return -EINVAL; |
124b53d0 HX |
922 | } |
923 | ||
924 | static void cryptd_free(struct crypto_instance *inst) | |
925 | { | |
926 | struct cryptd_instance_ctx *ctx = crypto_instance_ctx(inst); | |
0b535adf | 927 | struct hashd_instance_ctx *hctx = crypto_instance_ctx(inst); |
298c926c | 928 | struct aead_instance_ctx *aead_ctx = crypto_instance_ctx(inst); |
0b535adf HX |
929 | |
930 | switch (inst->alg.cra_flags & CRYPTO_ALG_TYPE_MASK) { | |
931 | case CRYPTO_ALG_TYPE_AHASH: | |
932 | crypto_drop_shash(&hctx->spawn); | |
933 | kfree(ahash_instance(inst)); | |
934 | return; | |
298c926c | 935 | case CRYPTO_ALG_TYPE_AEAD: |
f614e546 HX |
936 | crypto_drop_aead(&aead_ctx->aead_spawn); |
937 | kfree(aead_instance(inst)); | |
298c926c AH |
938 | return; |
939 | default: | |
940 | crypto_drop_spawn(&ctx->spawn); | |
941 | kfree(inst); | |
0b535adf | 942 | } |
124b53d0 HX |
943 | } |
944 | ||
945 | static struct crypto_template cryptd_tmpl = { | |
946 | .name = "cryptd", | |
9cd899a3 | 947 | .create = cryptd_create, |
124b53d0 HX |
948 | .free = cryptd_free, |
949 | .module = THIS_MODULE, | |
950 | }; | |
951 | ||
4e0958d1 HX |
952 | struct cryptd_skcipher *cryptd_alloc_skcipher(const char *alg_name, |
953 | u32 type, u32 mask) | |
954 | { | |
955 | char cryptd_alg_name[CRYPTO_MAX_ALG_NAME]; | |
956 | struct cryptd_skcipher_ctx *ctx; | |
957 | struct crypto_skcipher *tfm; | |
958 | ||
959 | if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME, | |
960 | "cryptd(%s)", alg_name) >= CRYPTO_MAX_ALG_NAME) | |
961 | return ERR_PTR(-EINVAL); | |
962 | ||
963 | tfm = crypto_alloc_skcipher(cryptd_alg_name, type, mask); | |
964 | if (IS_ERR(tfm)) | |
965 | return ERR_CAST(tfm); | |
966 | ||
967 | if (tfm->base.__crt_alg->cra_module != THIS_MODULE) { | |
968 | crypto_free_skcipher(tfm); | |
969 | return ERR_PTR(-EINVAL); | |
970 | } | |
971 | ||
972 | ctx = crypto_skcipher_ctx(tfm); | |
43b970fa | 973 | refcount_set(&ctx->refcnt, 1); |
4e0958d1 HX |
974 | |
975 | return container_of(tfm, struct cryptd_skcipher, base); | |
976 | } | |
977 | EXPORT_SYMBOL_GPL(cryptd_alloc_skcipher); | |
978 | ||
979 | struct crypto_skcipher *cryptd_skcipher_child(struct cryptd_skcipher *tfm) | |
980 | { | |
981 | struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(&tfm->base); | |
982 | ||
36b3875a | 983 | return &ctx->child->base; |
4e0958d1 HX |
984 | } |
985 | EXPORT_SYMBOL_GPL(cryptd_skcipher_child); | |
986 | ||
987 | bool cryptd_skcipher_queued(struct cryptd_skcipher *tfm) | |
988 | { | |
989 | struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(&tfm->base); | |
990 | ||
43b970fa | 991 | return refcount_read(&ctx->refcnt) - 1; |
4e0958d1 HX |
992 | } |
993 | EXPORT_SYMBOL_GPL(cryptd_skcipher_queued); | |
994 | ||
995 | void cryptd_free_skcipher(struct cryptd_skcipher *tfm) | |
996 | { | |
997 | struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(&tfm->base); | |
998 | ||
43b970fa | 999 | if (refcount_dec_and_test(&ctx->refcnt)) |
4e0958d1 HX |
1000 | crypto_free_skcipher(&tfm->base); |
1001 | } | |
1002 | EXPORT_SYMBOL_GPL(cryptd_free_skcipher); | |
1003 | ||
ace13663 HY |
1004 | struct cryptd_ahash *cryptd_alloc_ahash(const char *alg_name, |
1005 | u32 type, u32 mask) | |
1006 | { | |
1007 | char cryptd_alg_name[CRYPTO_MAX_ALG_NAME]; | |
81760ea6 | 1008 | struct cryptd_hash_ctx *ctx; |
ace13663 HY |
1009 | struct crypto_ahash *tfm; |
1010 | ||
1011 | if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME, | |
1012 | "cryptd(%s)", alg_name) >= CRYPTO_MAX_ALG_NAME) | |
1013 | return ERR_PTR(-EINVAL); | |
1014 | tfm = crypto_alloc_ahash(cryptd_alg_name, type, mask); | |
1015 | if (IS_ERR(tfm)) | |
1016 | return ERR_CAST(tfm); | |
1017 | if (tfm->base.__crt_alg->cra_module != THIS_MODULE) { | |
1018 | crypto_free_ahash(tfm); | |
1019 | return ERR_PTR(-EINVAL); | |
1020 | } | |
1021 | ||
81760ea6 | 1022 | ctx = crypto_ahash_ctx(tfm); |
43b970fa | 1023 | refcount_set(&ctx->refcnt, 1); |
81760ea6 | 1024 | |
ace13663 HY |
1025 | return __cryptd_ahash_cast(tfm); |
1026 | } | |
1027 | EXPORT_SYMBOL_GPL(cryptd_alloc_ahash); | |
1028 | ||
1029 | struct crypto_shash *cryptd_ahash_child(struct cryptd_ahash *tfm) | |
1030 | { | |
1031 | struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(&tfm->base); | |
1032 | ||
1033 | return ctx->child; | |
1034 | } | |
1035 | EXPORT_SYMBOL_GPL(cryptd_ahash_child); | |
1036 | ||
0e1227d3 HY |
1037 | struct shash_desc *cryptd_shash_desc(struct ahash_request *req) |
1038 | { | |
1039 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); | |
1040 | return &rctx->desc; | |
1041 | } | |
1042 | EXPORT_SYMBOL_GPL(cryptd_shash_desc); | |
1043 | ||
81760ea6 HX |
1044 | bool cryptd_ahash_queued(struct cryptd_ahash *tfm) |
1045 | { | |
1046 | struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(&tfm->base); | |
1047 | ||
43b970fa | 1048 | return refcount_read(&ctx->refcnt) - 1; |
81760ea6 HX |
1049 | } |
1050 | EXPORT_SYMBOL_GPL(cryptd_ahash_queued); | |
1051 | ||
ace13663 HY |
1052 | void cryptd_free_ahash(struct cryptd_ahash *tfm) |
1053 | { | |
81760ea6 HX |
1054 | struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(&tfm->base); |
1055 | ||
43b970fa | 1056 | if (refcount_dec_and_test(&ctx->refcnt)) |
81760ea6 | 1057 | crypto_free_ahash(&tfm->base); |
ace13663 HY |
1058 | } |
1059 | EXPORT_SYMBOL_GPL(cryptd_free_ahash); | |
1060 | ||
298c926c AH |
1061 | struct cryptd_aead *cryptd_alloc_aead(const char *alg_name, |
1062 | u32 type, u32 mask) | |
1063 | { | |
1064 | char cryptd_alg_name[CRYPTO_MAX_ALG_NAME]; | |
81760ea6 | 1065 | struct cryptd_aead_ctx *ctx; |
298c926c AH |
1066 | struct crypto_aead *tfm; |
1067 | ||
1068 | if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME, | |
1069 | "cryptd(%s)", alg_name) >= CRYPTO_MAX_ALG_NAME) | |
1070 | return ERR_PTR(-EINVAL); | |
1071 | tfm = crypto_alloc_aead(cryptd_alg_name, type, mask); | |
1072 | if (IS_ERR(tfm)) | |
1073 | return ERR_CAST(tfm); | |
1074 | if (tfm->base.__crt_alg->cra_module != THIS_MODULE) { | |
1075 | crypto_free_aead(tfm); | |
1076 | return ERR_PTR(-EINVAL); | |
1077 | } | |
81760ea6 HX |
1078 | |
1079 | ctx = crypto_aead_ctx(tfm); | |
43b970fa | 1080 | refcount_set(&ctx->refcnt, 1); |
81760ea6 | 1081 | |
298c926c AH |
1082 | return __cryptd_aead_cast(tfm); |
1083 | } | |
1084 | EXPORT_SYMBOL_GPL(cryptd_alloc_aead); | |
1085 | ||
1086 | struct crypto_aead *cryptd_aead_child(struct cryptd_aead *tfm) | |
1087 | { | |
1088 | struct cryptd_aead_ctx *ctx; | |
1089 | ctx = crypto_aead_ctx(&tfm->base); | |
1090 | return ctx->child; | |
1091 | } | |
1092 | EXPORT_SYMBOL_GPL(cryptd_aead_child); | |
1093 | ||
81760ea6 HX |
1094 | bool cryptd_aead_queued(struct cryptd_aead *tfm) |
1095 | { | |
1096 | struct cryptd_aead_ctx *ctx = crypto_aead_ctx(&tfm->base); | |
1097 | ||
43b970fa | 1098 | return refcount_read(&ctx->refcnt) - 1; |
81760ea6 HX |
1099 | } |
1100 | EXPORT_SYMBOL_GPL(cryptd_aead_queued); | |
1101 | ||
298c926c AH |
1102 | void cryptd_free_aead(struct cryptd_aead *tfm) |
1103 | { | |
81760ea6 HX |
1104 | struct cryptd_aead_ctx *ctx = crypto_aead_ctx(&tfm->base); |
1105 | ||
43b970fa | 1106 | if (refcount_dec_and_test(&ctx->refcnt)) |
81760ea6 | 1107 | crypto_free_aead(&tfm->base); |
298c926c AH |
1108 | } |
1109 | EXPORT_SYMBOL_GPL(cryptd_free_aead); | |
1110 | ||
124b53d0 HX |
1111 | static int __init cryptd_init(void) |
1112 | { | |
1113 | int err; | |
1114 | ||
3e56e168 EB |
1115 | cryptd_wq = alloc_workqueue("cryptd", WQ_MEM_RECLAIM | WQ_CPU_INTENSIVE, |
1116 | 1); | |
1117 | if (!cryptd_wq) | |
1118 | return -ENOMEM; | |
1119 | ||
c3a53605 | 1120 | err = cryptd_init_queue(&queue, cryptd_max_cpu_qlen); |
124b53d0 | 1121 | if (err) |
3e56e168 | 1122 | goto err_destroy_wq; |
124b53d0 HX |
1123 | |
1124 | err = crypto_register_template(&cryptd_tmpl); | |
1125 | if (err) | |
3e56e168 | 1126 | goto err_fini_queue; |
124b53d0 | 1127 | |
3e56e168 EB |
1128 | return 0; |
1129 | ||
1130 | err_fini_queue: | |
1131 | cryptd_fini_queue(&queue); | |
1132 | err_destroy_wq: | |
1133 | destroy_workqueue(cryptd_wq); | |
124b53d0 HX |
1134 | return err; |
1135 | } | |
1136 | ||
1137 | static void __exit cryptd_exit(void) | |
1138 | { | |
3e56e168 | 1139 | destroy_workqueue(cryptd_wq); |
254eff77 | 1140 | cryptd_fini_queue(&queue); |
124b53d0 HX |
1141 | crypto_unregister_template(&cryptd_tmpl); |
1142 | } | |
1143 | ||
b2bac6ac | 1144 | subsys_initcall(cryptd_init); |
124b53d0 HX |
1145 | module_exit(cryptd_exit); |
1146 | ||
1147 | MODULE_LICENSE("GPL"); | |
1148 | MODULE_DESCRIPTION("Software async crypto daemon"); | |
4943ba16 | 1149 | MODULE_ALIAS_CRYPTO("cryptd"); |