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1 | /* | |
2 | * Scatterlist Cryptographic API. | |
3 | * | |
4 | * Copyright (c) 2002 James Morris <jmorris@intercode.com.au> | |
5 | * Copyright (c) 2002 David S. Miller (davem@redhat.com) | |
6 | * Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au> | |
7 | * | |
8 | * Portions derived from Cryptoapi, by Alexander Kjeldaas <astor@fast.no> | |
9 | * and Nettle, by Niels Möller. | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify it | |
12 | * under the terms of the GNU General Public License as published by the Free | |
13 | * Software Foundation; either version 2 of the License, or (at your option) | |
14 | * any later version. | |
15 | * | |
16 | */ | |
17 | ||
18 | #include <linux/err.h> | |
19 | #include <linux/errno.h> | |
20 | #include <linux/kernel.h> | |
21 | #include <linux/kmod.h> | |
22 | #include <linux/module.h> | |
23 | #include <linux/param.h> | |
24 | #include <linux/sched/signal.h> | |
25 | #include <linux/slab.h> | |
26 | #include <linux/string.h> | |
27 | #include <linux/completion.h> | |
28 | #include "internal.h" | |
29 | ||
30 | LIST_HEAD(crypto_alg_list); | |
31 | EXPORT_SYMBOL_GPL(crypto_alg_list); | |
32 | DECLARE_RWSEM(crypto_alg_sem); | |
33 | EXPORT_SYMBOL_GPL(crypto_alg_sem); | |
34 | ||
35 | BLOCKING_NOTIFIER_HEAD(crypto_chain); | |
36 | EXPORT_SYMBOL_GPL(crypto_chain); | |
37 | ||
38 | static struct crypto_alg *crypto_larval_wait(struct crypto_alg *alg); | |
39 | ||
40 | struct crypto_alg *crypto_mod_get(struct crypto_alg *alg) | |
41 | { | |
42 | return try_module_get(alg->cra_module) ? crypto_alg_get(alg) : NULL; | |
43 | } | |
44 | EXPORT_SYMBOL_GPL(crypto_mod_get); | |
45 | ||
46 | void crypto_mod_put(struct crypto_alg *alg) | |
47 | { | |
48 | struct module *module = alg->cra_module; | |
49 | ||
50 | crypto_alg_put(alg); | |
51 | module_put(module); | |
52 | } | |
53 | EXPORT_SYMBOL_GPL(crypto_mod_put); | |
54 | ||
55 | static inline int crypto_is_test_larval(struct crypto_larval *larval) | |
56 | { | |
57 | return larval->alg.cra_driver_name[0]; | |
58 | } | |
59 | ||
60 | static struct crypto_alg *__crypto_alg_lookup(const char *name, u32 type, | |
61 | u32 mask) | |
62 | { | |
63 | struct crypto_alg *q, *alg = NULL; | |
64 | int best = -2; | |
65 | ||
66 | list_for_each_entry(q, &crypto_alg_list, cra_list) { | |
67 | int exact, fuzzy; | |
68 | ||
69 | if (crypto_is_moribund(q)) | |
70 | continue; | |
71 | ||
72 | if ((q->cra_flags ^ type) & mask) | |
73 | continue; | |
74 | ||
75 | if (crypto_is_larval(q) && | |
76 | !crypto_is_test_larval((struct crypto_larval *)q) && | |
77 | ((struct crypto_larval *)q)->mask != mask) | |
78 | continue; | |
79 | ||
80 | exact = !strcmp(q->cra_driver_name, name); | |
81 | fuzzy = !strcmp(q->cra_name, name); | |
82 | if (!exact && !(fuzzy && q->cra_priority > best)) | |
83 | continue; | |
84 | ||
85 | if (unlikely(!crypto_mod_get(q))) | |
86 | continue; | |
87 | ||
88 | best = q->cra_priority; | |
89 | if (alg) | |
90 | crypto_mod_put(alg); | |
91 | alg = q; | |
92 | ||
93 | if (exact) | |
94 | break; | |
95 | } | |
96 | ||
97 | return alg; | |
98 | } | |
99 | ||
100 | static void crypto_larval_destroy(struct crypto_alg *alg) | |
101 | { | |
102 | struct crypto_larval *larval = (void *)alg; | |
103 | ||
104 | BUG_ON(!crypto_is_larval(alg)); | |
105 | if (larval->adult) | |
106 | crypto_mod_put(larval->adult); | |
107 | kfree(larval); | |
108 | } | |
109 | ||
110 | struct crypto_larval *crypto_larval_alloc(const char *name, u32 type, u32 mask) | |
111 | { | |
112 | struct crypto_larval *larval; | |
113 | ||
114 | larval = kzalloc(sizeof(*larval), GFP_KERNEL); | |
115 | if (!larval) | |
116 | return ERR_PTR(-ENOMEM); | |
117 | ||
118 | larval->mask = mask; | |
119 | larval->alg.cra_flags = CRYPTO_ALG_LARVAL | type; | |
120 | larval->alg.cra_priority = -1; | |
121 | larval->alg.cra_destroy = crypto_larval_destroy; | |
122 | ||
123 | strlcpy(larval->alg.cra_name, name, CRYPTO_MAX_ALG_NAME); | |
124 | init_completion(&larval->completion); | |
125 | ||
126 | return larval; | |
127 | } | |
128 | EXPORT_SYMBOL_GPL(crypto_larval_alloc); | |
129 | ||
130 | static struct crypto_alg *crypto_larval_add(const char *name, u32 type, | |
131 | u32 mask) | |
132 | { | |
133 | struct crypto_alg *alg; | |
134 | struct crypto_larval *larval; | |
135 | ||
136 | larval = crypto_larval_alloc(name, type, mask); | |
137 | if (IS_ERR(larval)) | |
138 | return ERR_CAST(larval); | |
139 | ||
140 | refcount_set(&larval->alg.cra_refcnt, 2); | |
141 | ||
142 | down_write(&crypto_alg_sem); | |
143 | alg = __crypto_alg_lookup(name, type, mask); | |
144 | if (!alg) { | |
145 | alg = &larval->alg; | |
146 | list_add(&alg->cra_list, &crypto_alg_list); | |
147 | } | |
148 | up_write(&crypto_alg_sem); | |
149 | ||
150 | if (alg != &larval->alg) { | |
151 | kfree(larval); | |
152 | if (crypto_is_larval(alg)) | |
153 | alg = crypto_larval_wait(alg); | |
154 | } | |
155 | ||
156 | return alg; | |
157 | } | |
158 | ||
159 | void crypto_larval_kill(struct crypto_alg *alg) | |
160 | { | |
161 | struct crypto_larval *larval = (void *)alg; | |
162 | ||
163 | down_write(&crypto_alg_sem); | |
164 | list_del(&alg->cra_list); | |
165 | up_write(&crypto_alg_sem); | |
166 | complete_all(&larval->completion); | |
167 | crypto_alg_put(alg); | |
168 | } | |
169 | EXPORT_SYMBOL_GPL(crypto_larval_kill); | |
170 | ||
171 | static struct crypto_alg *crypto_larval_wait(struct crypto_alg *alg) | |
172 | { | |
173 | struct crypto_larval *larval = (void *)alg; | |
174 | long timeout; | |
175 | ||
176 | timeout = wait_for_completion_killable_timeout( | |
177 | &larval->completion, 60 * HZ); | |
178 | ||
179 | alg = larval->adult; | |
180 | if (timeout < 0) | |
181 | alg = ERR_PTR(-EINTR); | |
182 | else if (!timeout) | |
183 | alg = ERR_PTR(-ETIMEDOUT); | |
184 | else if (!alg) | |
185 | alg = ERR_PTR(-ENOENT); | |
186 | else if (crypto_is_test_larval(larval) && | |
187 | !(alg->cra_flags & CRYPTO_ALG_TESTED)) | |
188 | alg = ERR_PTR(-EAGAIN); | |
189 | else if (!crypto_mod_get(alg)) | |
190 | alg = ERR_PTR(-EAGAIN); | |
191 | crypto_mod_put(&larval->alg); | |
192 | ||
193 | return alg; | |
194 | } | |
195 | ||
196 | static struct crypto_alg *crypto_alg_lookup(const char *name, u32 type, | |
197 | u32 mask) | |
198 | { | |
199 | struct crypto_alg *alg; | |
200 | u32 test = 0; | |
201 | ||
202 | if (!((type | mask) & CRYPTO_ALG_TESTED)) | |
203 | test |= CRYPTO_ALG_TESTED; | |
204 | ||
205 | down_read(&crypto_alg_sem); | |
206 | alg = __crypto_alg_lookup(name, type | test, mask | test); | |
207 | if (!alg && test) { | |
208 | alg = __crypto_alg_lookup(name, type, mask); | |
209 | if (alg && !crypto_is_larval(alg)) { | |
210 | /* Test failed */ | |
211 | crypto_mod_put(alg); | |
212 | alg = ERR_PTR(-ELIBBAD); | |
213 | } | |
214 | } | |
215 | up_read(&crypto_alg_sem); | |
216 | ||
217 | return alg; | |
218 | } | |
219 | ||
220 | static struct crypto_alg *crypto_larval_lookup(const char *name, u32 type, | |
221 | u32 mask) | |
222 | { | |
223 | struct crypto_alg *alg; | |
224 | ||
225 | if (!name) | |
226 | return ERR_PTR(-ENOENT); | |
227 | ||
228 | type &= ~(CRYPTO_ALG_LARVAL | CRYPTO_ALG_DEAD); | |
229 | mask &= ~(CRYPTO_ALG_LARVAL | CRYPTO_ALG_DEAD); | |
230 | ||
231 | alg = crypto_alg_lookup(name, type, mask); | |
232 | if (!alg) { | |
233 | request_module("crypto-%s", name); | |
234 | ||
235 | if (!((type ^ CRYPTO_ALG_NEED_FALLBACK) & mask & | |
236 | CRYPTO_ALG_NEED_FALLBACK)) | |
237 | request_module("crypto-%s-all", name); | |
238 | ||
239 | alg = crypto_alg_lookup(name, type, mask); | |
240 | } | |
241 | ||
242 | if (!IS_ERR_OR_NULL(alg) && crypto_is_larval(alg)) | |
243 | alg = crypto_larval_wait(alg); | |
244 | else if (!alg) | |
245 | alg = crypto_larval_add(name, type, mask); | |
246 | ||
247 | return alg; | |
248 | } | |
249 | ||
250 | int crypto_probing_notify(unsigned long val, void *v) | |
251 | { | |
252 | int ok; | |
253 | ||
254 | ok = blocking_notifier_call_chain(&crypto_chain, val, v); | |
255 | if (ok == NOTIFY_DONE) { | |
256 | request_module("cryptomgr"); | |
257 | ok = blocking_notifier_call_chain(&crypto_chain, val, v); | |
258 | } | |
259 | ||
260 | return ok; | |
261 | } | |
262 | EXPORT_SYMBOL_GPL(crypto_probing_notify); | |
263 | ||
264 | struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask) | |
265 | { | |
266 | struct crypto_alg *alg; | |
267 | struct crypto_alg *larval; | |
268 | int ok; | |
269 | ||
270 | /* | |
271 | * If the internal flag is set for a cipher, require a caller to | |
272 | * to invoke the cipher with the internal flag to use that cipher. | |
273 | * Also, if a caller wants to allocate a cipher that may or may | |
274 | * not be an internal cipher, use type | CRYPTO_ALG_INTERNAL and | |
275 | * !(mask & CRYPTO_ALG_INTERNAL). | |
276 | */ | |
277 | if (!((type | mask) & CRYPTO_ALG_INTERNAL)) | |
278 | mask |= CRYPTO_ALG_INTERNAL; | |
279 | ||
280 | larval = crypto_larval_lookup(name, type, mask); | |
281 | if (IS_ERR(larval) || !crypto_is_larval(larval)) | |
282 | return larval; | |
283 | ||
284 | ok = crypto_probing_notify(CRYPTO_MSG_ALG_REQUEST, larval); | |
285 | ||
286 | if (ok == NOTIFY_STOP) | |
287 | alg = crypto_larval_wait(larval); | |
288 | else { | |
289 | crypto_mod_put(larval); | |
290 | alg = ERR_PTR(-ENOENT); | |
291 | } | |
292 | crypto_larval_kill(larval); | |
293 | return alg; | |
294 | } | |
295 | EXPORT_SYMBOL_GPL(crypto_alg_mod_lookup); | |
296 | ||
297 | static int crypto_init_ops(struct crypto_tfm *tfm, u32 type, u32 mask) | |
298 | { | |
299 | const struct crypto_type *type_obj = tfm->__crt_alg->cra_type; | |
300 | ||
301 | if (type_obj) | |
302 | return type_obj->init(tfm, type, mask); | |
303 | ||
304 | switch (crypto_tfm_alg_type(tfm)) { | |
305 | case CRYPTO_ALG_TYPE_CIPHER: | |
306 | return crypto_init_cipher_ops(tfm); | |
307 | ||
308 | case CRYPTO_ALG_TYPE_COMPRESS: | |
309 | return crypto_init_compress_ops(tfm); | |
310 | ||
311 | default: | |
312 | break; | |
313 | } | |
314 | ||
315 | BUG(); | |
316 | return -EINVAL; | |
317 | } | |
318 | ||
319 | static void crypto_exit_ops(struct crypto_tfm *tfm) | |
320 | { | |
321 | const struct crypto_type *type = tfm->__crt_alg->cra_type; | |
322 | ||
323 | if (type && tfm->exit) | |
324 | tfm->exit(tfm); | |
325 | } | |
326 | ||
327 | static unsigned int crypto_ctxsize(struct crypto_alg *alg, u32 type, u32 mask) | |
328 | { | |
329 | const struct crypto_type *type_obj = alg->cra_type; | |
330 | unsigned int len; | |
331 | ||
332 | len = alg->cra_alignmask & ~(crypto_tfm_ctx_alignment() - 1); | |
333 | if (type_obj) | |
334 | return len + type_obj->ctxsize(alg, type, mask); | |
335 | ||
336 | switch (alg->cra_flags & CRYPTO_ALG_TYPE_MASK) { | |
337 | default: | |
338 | BUG(); | |
339 | ||
340 | case CRYPTO_ALG_TYPE_CIPHER: | |
341 | len += crypto_cipher_ctxsize(alg); | |
342 | break; | |
343 | ||
344 | case CRYPTO_ALG_TYPE_COMPRESS: | |
345 | len += crypto_compress_ctxsize(alg); | |
346 | break; | |
347 | } | |
348 | ||
349 | return len; | |
350 | } | |
351 | ||
352 | void crypto_shoot_alg(struct crypto_alg *alg) | |
353 | { | |
354 | down_write(&crypto_alg_sem); | |
355 | alg->cra_flags |= CRYPTO_ALG_DYING; | |
356 | up_write(&crypto_alg_sem); | |
357 | } | |
358 | EXPORT_SYMBOL_GPL(crypto_shoot_alg); | |
359 | ||
360 | struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type, | |
361 | u32 mask) | |
362 | { | |
363 | struct crypto_tfm *tfm = NULL; | |
364 | unsigned int tfm_size; | |
365 | int err = -ENOMEM; | |
366 | ||
367 | tfm_size = sizeof(*tfm) + crypto_ctxsize(alg, type, mask); | |
368 | tfm = kzalloc(tfm_size, GFP_KERNEL); | |
369 | if (tfm == NULL) | |
370 | goto out_err; | |
371 | ||
372 | tfm->__crt_alg = alg; | |
373 | ||
374 | err = crypto_init_ops(tfm, type, mask); | |
375 | if (err) | |
376 | goto out_free_tfm; | |
377 | ||
378 | if (!tfm->exit && alg->cra_init && (err = alg->cra_init(tfm))) | |
379 | goto cra_init_failed; | |
380 | ||
381 | goto out; | |
382 | ||
383 | cra_init_failed: | |
384 | crypto_exit_ops(tfm); | |
385 | out_free_tfm: | |
386 | if (err == -EAGAIN) | |
387 | crypto_shoot_alg(alg); | |
388 | kfree(tfm); | |
389 | out_err: | |
390 | tfm = ERR_PTR(err); | |
391 | out: | |
392 | return tfm; | |
393 | } | |
394 | EXPORT_SYMBOL_GPL(__crypto_alloc_tfm); | |
395 | ||
396 | /* | |
397 | * crypto_alloc_base - Locate algorithm and allocate transform | |
398 | * @alg_name: Name of algorithm | |
399 | * @type: Type of algorithm | |
400 | * @mask: Mask for type comparison | |
401 | * | |
402 | * This function should not be used by new algorithm types. | |
403 | * Please use crypto_alloc_tfm instead. | |
404 | * | |
405 | * crypto_alloc_base() will first attempt to locate an already loaded | |
406 | * algorithm. If that fails and the kernel supports dynamically loadable | |
407 | * modules, it will then attempt to load a module of the same name or | |
408 | * alias. If that fails it will send a query to any loaded crypto manager | |
409 | * to construct an algorithm on the fly. A refcount is grabbed on the | |
410 | * algorithm which is then associated with the new transform. | |
411 | * | |
412 | * The returned transform is of a non-determinate type. Most people | |
413 | * should use one of the more specific allocation functions such as | |
414 | * crypto_alloc_blkcipher. | |
415 | * | |
416 | * In case of error the return value is an error pointer. | |
417 | */ | |
418 | struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask) | |
419 | { | |
420 | struct crypto_tfm *tfm; | |
421 | int err; | |
422 | ||
423 | for (;;) { | |
424 | struct crypto_alg *alg; | |
425 | ||
426 | alg = crypto_alg_mod_lookup(alg_name, type, mask); | |
427 | if (IS_ERR(alg)) { | |
428 | err = PTR_ERR(alg); | |
429 | goto err; | |
430 | } | |
431 | ||
432 | tfm = __crypto_alloc_tfm(alg, type, mask); | |
433 | if (!IS_ERR(tfm)) | |
434 | return tfm; | |
435 | ||
436 | crypto_mod_put(alg); | |
437 | err = PTR_ERR(tfm); | |
438 | ||
439 | err: | |
440 | if (err != -EAGAIN) | |
441 | break; | |
442 | if (fatal_signal_pending(current)) { | |
443 | err = -EINTR; | |
444 | break; | |
445 | } | |
446 | } | |
447 | ||
448 | return ERR_PTR(err); | |
449 | } | |
450 | EXPORT_SYMBOL_GPL(crypto_alloc_base); | |
451 | ||
452 | void *crypto_create_tfm(struct crypto_alg *alg, | |
453 | const struct crypto_type *frontend) | |
454 | { | |
455 | char *mem; | |
456 | struct crypto_tfm *tfm = NULL; | |
457 | unsigned int tfmsize; | |
458 | unsigned int total; | |
459 | int err = -ENOMEM; | |
460 | ||
461 | tfmsize = frontend->tfmsize; | |
462 | total = tfmsize + sizeof(*tfm) + frontend->extsize(alg); | |
463 | ||
464 | mem = kzalloc(total, GFP_KERNEL); | |
465 | if (mem == NULL) | |
466 | goto out_err; | |
467 | ||
468 | tfm = (struct crypto_tfm *)(mem + tfmsize); | |
469 | tfm->__crt_alg = alg; | |
470 | ||
471 | err = frontend->init_tfm(tfm); | |
472 | if (err) | |
473 | goto out_free_tfm; | |
474 | ||
475 | if (!tfm->exit && alg->cra_init && (err = alg->cra_init(tfm))) | |
476 | goto cra_init_failed; | |
477 | ||
478 | goto out; | |
479 | ||
480 | cra_init_failed: | |
481 | crypto_exit_ops(tfm); | |
482 | out_free_tfm: | |
483 | if (err == -EAGAIN) | |
484 | crypto_shoot_alg(alg); | |
485 | kfree(mem); | |
486 | out_err: | |
487 | mem = ERR_PTR(err); | |
488 | out: | |
489 | return mem; | |
490 | } | |
491 | EXPORT_SYMBOL_GPL(crypto_create_tfm); | |
492 | ||
493 | struct crypto_alg *crypto_find_alg(const char *alg_name, | |
494 | const struct crypto_type *frontend, | |
495 | u32 type, u32 mask) | |
496 | { | |
497 | if (frontend) { | |
498 | type &= frontend->maskclear; | |
499 | mask &= frontend->maskclear; | |
500 | type |= frontend->type; | |
501 | mask |= frontend->maskset; | |
502 | } | |
503 | ||
504 | return crypto_alg_mod_lookup(alg_name, type, mask); | |
505 | } | |
506 | EXPORT_SYMBOL_GPL(crypto_find_alg); | |
507 | ||
508 | /* | |
509 | * crypto_alloc_tfm - Locate algorithm and allocate transform | |
510 | * @alg_name: Name of algorithm | |
511 | * @frontend: Frontend algorithm type | |
512 | * @type: Type of algorithm | |
513 | * @mask: Mask for type comparison | |
514 | * | |
515 | * crypto_alloc_tfm() will first attempt to locate an already loaded | |
516 | * algorithm. If that fails and the kernel supports dynamically loadable | |
517 | * modules, it will then attempt to load a module of the same name or | |
518 | * alias. If that fails it will send a query to any loaded crypto manager | |
519 | * to construct an algorithm on the fly. A refcount is grabbed on the | |
520 | * algorithm which is then associated with the new transform. | |
521 | * | |
522 | * The returned transform is of a non-determinate type. Most people | |
523 | * should use one of the more specific allocation functions such as | |
524 | * crypto_alloc_blkcipher. | |
525 | * | |
526 | * In case of error the return value is an error pointer. | |
527 | */ | |
528 | void *crypto_alloc_tfm(const char *alg_name, | |
529 | const struct crypto_type *frontend, u32 type, u32 mask) | |
530 | { | |
531 | void *tfm; | |
532 | int err; | |
533 | ||
534 | for (;;) { | |
535 | struct crypto_alg *alg; | |
536 | ||
537 | alg = crypto_find_alg(alg_name, frontend, type, mask); | |
538 | if (IS_ERR(alg)) { | |
539 | err = PTR_ERR(alg); | |
540 | goto err; | |
541 | } | |
542 | ||
543 | tfm = crypto_create_tfm(alg, frontend); | |
544 | if (!IS_ERR(tfm)) | |
545 | return tfm; | |
546 | ||
547 | crypto_mod_put(alg); | |
548 | err = PTR_ERR(tfm); | |
549 | ||
550 | err: | |
551 | if (err != -EAGAIN) | |
552 | break; | |
553 | if (fatal_signal_pending(current)) { | |
554 | err = -EINTR; | |
555 | break; | |
556 | } | |
557 | } | |
558 | ||
559 | return ERR_PTR(err); | |
560 | } | |
561 | EXPORT_SYMBOL_GPL(crypto_alloc_tfm); | |
562 | ||
563 | /* | |
564 | * crypto_destroy_tfm - Free crypto transform | |
565 | * @mem: Start of tfm slab | |
566 | * @tfm: Transform to free | |
567 | * | |
568 | * This function frees up the transform and any associated resources, | |
569 | * then drops the refcount on the associated algorithm. | |
570 | */ | |
571 | void crypto_destroy_tfm(void *mem, struct crypto_tfm *tfm) | |
572 | { | |
573 | struct crypto_alg *alg; | |
574 | ||
575 | if (unlikely(!mem)) | |
576 | return; | |
577 | ||
578 | alg = tfm->__crt_alg; | |
579 | ||
580 | if (!tfm->exit && alg->cra_exit) | |
581 | alg->cra_exit(tfm); | |
582 | crypto_exit_ops(tfm); | |
583 | crypto_mod_put(alg); | |
584 | kzfree(mem); | |
585 | } | |
586 | EXPORT_SYMBOL_GPL(crypto_destroy_tfm); | |
587 | ||
588 | int crypto_has_alg(const char *name, u32 type, u32 mask) | |
589 | { | |
590 | int ret = 0; | |
591 | struct crypto_alg *alg = crypto_alg_mod_lookup(name, type, mask); | |
592 | ||
593 | if (!IS_ERR(alg)) { | |
594 | crypto_mod_put(alg); | |
595 | ret = 1; | |
596 | } | |
597 | ||
598 | return ret; | |
599 | } | |
600 | EXPORT_SYMBOL_GPL(crypto_has_alg); | |
601 | ||
602 | void crypto_req_done(struct crypto_async_request *req, int err) | |
603 | { | |
604 | struct crypto_wait *wait = req->data; | |
605 | ||
606 | if (err == -EINPROGRESS) | |
607 | return; | |
608 | ||
609 | wait->err = err; | |
610 | complete(&wait->completion); | |
611 | } | |
612 | EXPORT_SYMBOL_GPL(crypto_req_done); | |
613 | ||
614 | MODULE_DESCRIPTION("Cryptographic core API"); | |
615 | MODULE_LICENSE("GPL"); |