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[mirror_ubuntu-focal-kernel.git] / crypto / algapi.c
CommitLineData
2874c5fd 1// SPDX-License-Identifier: GPL-2.0-or-later
cce9e06d
HX
2/*
3 * Cryptographic API for algorithms (i.e., low-level API).
4 *
5 * Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au>
cce9e06d
HX
6 */
7
13c935bb 8#include <crypto/algapi.h>
6bfd4809 9#include <linux/err.h>
cce9e06d 10#include <linux/errno.h>
3133d76f 11#include <linux/fips.h>
cce9e06d
HX
12#include <linux/init.h>
13#include <linux/kernel.h>
4cc7720c 14#include <linux/list.h>
cce9e06d 15#include <linux/module.h>
7fed0bf2 16#include <linux/rtnetlink.h>
5a0e3ad6 17#include <linux/slab.h>
cce9e06d
HX
18#include <linux/string.h>
19
20#include "internal.h"
21
4cc7720c
HX
22static LIST_HEAD(crypto_template_list);
23
002c77a4
JW
24static inline void crypto_check_module_sig(struct module *mod)
25{
59afdc7b 26 if (fips_enabled && mod && !module_sig_ok(mod))
002c77a4 27 panic("Module %s signature verification failed in FIPS mode\n",
bd4a7c69 28 module_name(mod));
002c77a4
JW
29}
30
4cc7720c 31static int crypto_check_alg(struct crypto_alg *alg)
cce9e06d 32{
002c77a4
JW
33 crypto_check_module_sig(alg->cra_module);
34
177f87d0
EB
35 if (!alg->cra_name[0] || !alg->cra_driver_name[0])
36 return -EINVAL;
37
cce9e06d
HX
38 if (alg->cra_alignmask & (alg->cra_alignmask + 1))
39 return -EINVAL;
40
a9f7f88a
KC
41 /* General maximums for all algs. */
42 if (alg->cra_alignmask > MAX_ALGAPI_ALIGNMASK)
cce9e06d
HX
43 return -EINVAL;
44
a9f7f88a
KC
45 if (alg->cra_blocksize > MAX_ALGAPI_BLOCKSIZE)
46 return -EINVAL;
47
48 /* Lower maximums for specific alg types. */
13c935bb
SM
49 if (!alg->cra_type && (alg->cra_flags & CRYPTO_ALG_TYPE_MASK) ==
50 CRYPTO_ALG_TYPE_CIPHER) {
51 if (alg->cra_alignmask > MAX_CIPHER_ALIGNMASK)
52 return -EINVAL;
53
54 if (alg->cra_blocksize > MAX_CIPHER_BLOCKSIZE)
55 return -EINVAL;
56 }
57
cce9e06d
HX
58 if (alg->cra_priority < 0)
59 return -EINVAL;
cce9e06d 60
ce8614a3 61 refcount_set(&alg->cra_refcnt, 1);
e9b8e5be 62
177f87d0 63 return 0;
4cc7720c
HX
64}
65
319382a6
HX
66static void crypto_free_instance(struct crypto_instance *inst)
67{
68 if (!inst->alg.cra_type->free) {
69 inst->tmpl->free(inst);
70 return;
71 }
72
73 inst->alg.cra_type->free(inst);
74}
75
6bfd4809
HX
76static void crypto_destroy_instance(struct crypto_alg *alg)
77{
78 struct crypto_instance *inst = (void *)alg;
79 struct crypto_template *tmpl = inst->tmpl;
80
319382a6 81 crypto_free_instance(inst);
6bfd4809
HX
82 crypto_tmpl_put(tmpl);
83}
84
2bf29016
HX
85static struct list_head *crypto_more_spawns(struct crypto_alg *alg,
86 struct list_head *stack,
87 struct list_head *top,
88 struct list_head *secondary_spawns)
89{
90 struct crypto_spawn *spawn, *n;
91
304e4818
GT
92 spawn = list_first_entry_or_null(stack, struct crypto_spawn, list);
93 if (!spawn)
2bf29016
HX
94 return NULL;
95
304e4818 96 n = list_next_entry(spawn, list);
2bf29016
HX
97
98 if (spawn->alg && &n->list != stack && !n->alg)
99 n->alg = (n->list.next == stack) ? alg :
304e4818 100 &list_next_entry(n, list)->inst->alg;
2bf29016
HX
101
102 list_move(&spawn->list, secondary_spawns);
103
104 return &n->list == stack ? top : &n->inst->alg.cra_users;
105}
106
1f723710
HX
107static void crypto_remove_instance(struct crypto_instance *inst,
108 struct list_head *list)
6bfd4809 109{
a73e6996 110 struct crypto_template *tmpl = inst->tmpl;
6bfd4809 111
a73e6996
HX
112 if (crypto_is_dead(&inst->alg))
113 return;
6bfd4809 114
a73e6996 115 inst->alg.cra_flags |= CRYPTO_ALG_DEAD;
38cb2419
HX
116 if (hlist_unhashed(&inst->list))
117 return;
118
a73e6996
HX
119 if (!tmpl || !crypto_tmpl_get(tmpl))
120 return;
121
a73e6996
HX
122 list_move(&inst->alg.cra_list, list);
123 hlist_del(&inst->list);
124 inst->alg.cra_destroy = crypto_destroy_instance;
125
2bf29016 126 BUG_ON(!list_empty(&inst->alg.cra_users));
a73e6996
HX
127}
128
89b596ba
SK
129void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list,
130 struct crypto_alg *nalg)
a73e6996 131{
2bf29016 132 u32 new_type = (nalg ?: alg)->cra_flags;
a73e6996
HX
133 struct crypto_spawn *spawn, *n;
134 LIST_HEAD(secondary_spawns);
2bf29016
HX
135 struct list_head *spawns;
136 LIST_HEAD(stack);
137 LIST_HEAD(top);
6bfd4809 138
2bf29016 139 spawns = &alg->cra_users;
a73e6996
HX
140 list_for_each_entry_safe(spawn, n, spawns, list) {
141 if ((spawn->alg->cra_flags ^ new_type) & spawn->mask)
6bfd4809
HX
142 continue;
143
2bf29016 144 list_move(&spawn->list, &top);
a73e6996 145 }
6bfd4809 146
2bf29016
HX
147 spawns = &top;
148 do {
149 while (!list_empty(spawns)) {
150 struct crypto_instance *inst;
151
152 spawn = list_first_entry(spawns, struct crypto_spawn,
153 list);
154 inst = spawn->inst;
155
156 BUG_ON(&inst->alg == alg);
157
158 list_move(&spawn->list, &stack);
159
160 if (&inst->alg == nalg)
161 break;
162
163 spawn->alg = NULL;
164 spawns = &inst->alg.cra_users;
9a006742
EB
165
166 /*
167 * We may encounter an unregistered instance here, since
168 * an instance's spawns are set up prior to the instance
169 * being registered. An unregistered instance will have
170 * NULL ->cra_users.next, since ->cra_users isn't
171 * properly initialized until registration. But an
172 * unregistered instance cannot have any users, so treat
173 * it the same as ->cra_users being empty.
174 */
175 if (spawns->next == NULL)
176 break;
2bf29016
HX
177 }
178 } while ((spawns = crypto_more_spawns(alg, &stack, &top,
179 &secondary_spawns)));
180
181 list_for_each_entry_safe(spawn, n, &secondary_spawns, list) {
182 if (spawn->alg)
183 list_move(&spawn->list, &spawn->alg->cra_users);
184 else
1f723710 185 crypto_remove_instance(spawn->inst, list);
6bfd4809
HX
186 }
187}
89b596ba 188EXPORT_SYMBOL_GPL(crypto_remove_spawns);
6bfd4809 189
73d3864a 190static struct crypto_larval *__crypto_register_alg(struct crypto_alg *alg)
4cc7720c
HX
191{
192 struct crypto_alg *q;
73d3864a 193 struct crypto_larval *larval;
6bfd4809
HX
194 int ret = -EAGAIN;
195
196 if (crypto_is_dead(alg))
73d3864a 197 goto err;
6bfd4809
HX
198
199 INIT_LIST_HEAD(&alg->cra_users);
200
73d3864a
HX
201 /* No cheating! */
202 alg->cra_flags &= ~CRYPTO_ALG_TESTED;
203
6bfd4809 204 ret = -EEXIST;
4cc7720c 205
cce9e06d 206 list_for_each_entry(q, &crypto_alg_list, cra_list) {
4cc7720c 207 if (q == alg)
73d3864a
HX
208 goto err;
209
b8e15992
HX
210 if (crypto_is_moribund(q))
211 continue;
212
73d3864a
HX
213 if (crypto_is_larval(q)) {
214 if (!strcmp(alg->cra_driver_name, q->cra_driver_name))
215 goto err;
216 continue;
217 }
218
219 if (!strcmp(q->cra_driver_name, alg->cra_name) ||
220 !strcmp(q->cra_name, alg->cra_driver_name))
221 goto err;
222 }
223
224 larval = crypto_larval_alloc(alg->cra_name,
225 alg->cra_flags | CRYPTO_ALG_TESTED, 0);
226 if (IS_ERR(larval))
227 goto out;
228
229 ret = -ENOENT;
230 larval->adult = crypto_mod_get(alg);
231 if (!larval->adult)
232 goto free_larval;
233
ce8614a3 234 refcount_set(&larval->alg.cra_refcnt, 1);
73d3864a
HX
235 memcpy(larval->alg.cra_driver_name, alg->cra_driver_name,
236 CRYPTO_MAX_ALG_NAME);
237 larval->alg.cra_priority = alg->cra_priority;
238
239 list_add(&alg->cra_list, &crypto_alg_list);
240 list_add(&larval->alg.cra_list, &crypto_alg_list);
241
1f6669b9 242 crypto_stats_init(alg);
cac5818c 243
5357c6c4 244out:
73d3864a
HX
245 return larval;
246
247free_larval:
248 kfree(larval);
249err:
250 larval = ERR_PTR(ret);
251 goto out;
252}
253
254void crypto_alg_tested(const char *name, int err)
255{
256 struct crypto_larval *test;
257 struct crypto_alg *alg;
258 struct crypto_alg *q;
259 LIST_HEAD(list);
260
261 down_write(&crypto_alg_sem);
262 list_for_each_entry(q, &crypto_alg_list, cra_list) {
b8e15992 263 if (crypto_is_moribund(q) || !crypto_is_larval(q))
73d3864a
HX
264 continue;
265
266 test = (struct crypto_larval *)q;
267
268 if (!strcmp(q->cra_driver_name, name))
269 goto found;
270 }
271
c7235857 272 pr_err("alg: Unexpected test result for %s: %d\n", name, err);
73d3864a
HX
273 goto unlock;
274
275found:
b8e15992 276 q->cra_flags |= CRYPTO_ALG_DEAD;
73d3864a
HX
277 alg = test->adult;
278 if (err || list_empty(&alg->cra_list))
279 goto complete;
280
281 alg->cra_flags |= CRYPTO_ALG_TESTED;
282
283 list_for_each_entry(q, &crypto_alg_list, cra_list) {
284 if (q == alg)
285 continue;
6bfd4809
HX
286
287 if (crypto_is_moribund(q))
288 continue;
289
290 if (crypto_is_larval(q)) {
2825982d
HX
291 struct crypto_larval *larval = (void *)q;
292
d8058480
HX
293 /*
294 * Check to see if either our generic name or
295 * specific name can satisfy the name requested
296 * by the larval entry q.
297 */
6bfd4809
HX
298 if (strcmp(alg->cra_name, q->cra_name) &&
299 strcmp(alg->cra_driver_name, q->cra_name))
300 continue;
301
302 if (larval->adult)
303 continue;
492e2b63
HX
304 if ((q->cra_flags ^ alg->cra_flags) & larval->mask)
305 continue;
2825982d
HX
306 if (!crypto_mod_get(alg))
307 continue;
6bfd4809 308
2825982d 309 larval->adult = alg;
6bfd4809 310 continue;
2825982d 311 }
6bfd4809
HX
312
313 if (strcmp(alg->cra_name, q->cra_name))
314 continue;
315
316 if (strcmp(alg->cra_driver_name, q->cra_driver_name) &&
317 q->cra_priority > alg->cra_priority)
318 continue;
319
2bf29016 320 crypto_remove_spawns(q, &list, alg);
cce9e06d 321 }
2825982d 322
73d3864a
HX
323complete:
324 complete_all(&test->completion);
2825982d 325
73d3864a
HX
326unlock:
327 up_write(&crypto_alg_sem);
328
329 crypto_remove_final(&list);
cce9e06d 330}
73d3864a 331EXPORT_SYMBOL_GPL(crypto_alg_tested);
4cc7720c 332
22e5b20b 333void crypto_remove_final(struct list_head *list)
6bfd4809
HX
334{
335 struct crypto_alg *alg;
336 struct crypto_alg *n;
337
338 list_for_each_entry_safe(alg, n, list, cra_list) {
339 list_del_init(&alg->cra_list);
340 crypto_alg_put(alg);
341 }
342}
22e5b20b 343EXPORT_SYMBOL_GPL(crypto_remove_final);
6bfd4809 344
73d3864a
HX
345static void crypto_wait_for_test(struct crypto_larval *larval)
346{
347 int err;
348
349 err = crypto_probing_notify(CRYPTO_MSG_ALG_REGISTER, larval->adult);
350 if (err != NOTIFY_STOP) {
351 if (WARN_ON(err != NOTIFY_DONE))
352 goto out;
353 crypto_alg_tested(larval->alg.cra_driver_name, 0);
354 }
355
3fc89adb 356 err = wait_for_completion_killable(&larval->completion);
73d3864a 357 WARN_ON(err);
dd8b083f
MP
358 if (!err)
359 crypto_probing_notify(CRYPTO_MSG_ALG_LOADED, larval);
73d3864a
HX
360
361out:
362 crypto_larval_kill(&larval->alg);
363}
364
4cc7720c
HX
365int crypto_register_alg(struct crypto_alg *alg)
366{
73d3864a 367 struct crypto_larval *larval;
4cc7720c
HX
368 int err;
369
d6040764 370 alg->cra_flags &= ~CRYPTO_ALG_DEAD;
4cc7720c
HX
371 err = crypto_check_alg(alg);
372 if (err)
373 return err;
374
375 down_write(&crypto_alg_sem);
73d3864a 376 larval = __crypto_register_alg(alg);
4cc7720c
HX
377 up_write(&crypto_alg_sem);
378
73d3864a
HX
379 if (IS_ERR(larval))
380 return PTR_ERR(larval);
381
382 crypto_wait_for_test(larval);
383 return 0;
4cc7720c 384}
cce9e06d
HX
385EXPORT_SYMBOL_GPL(crypto_register_alg);
386
6bfd4809
HX
387static int crypto_remove_alg(struct crypto_alg *alg, struct list_head *list)
388{
389 if (unlikely(list_empty(&alg->cra_list)))
390 return -ENOENT;
391
392 alg->cra_flags |= CRYPTO_ALG_DEAD;
393
6bfd4809 394 list_del_init(&alg->cra_list);
2bf29016 395 crypto_remove_spawns(alg, list, NULL);
6bfd4809
HX
396
397 return 0;
398}
399
cce9e06d
HX
400int crypto_unregister_alg(struct crypto_alg *alg)
401{
6bfd4809
HX
402 int ret;
403 LIST_HEAD(list);
5357c6c4 404
cce9e06d 405 down_write(&crypto_alg_sem);
6bfd4809 406 ret = crypto_remove_alg(alg, &list);
cce9e06d
HX
407 up_write(&crypto_alg_sem);
408
409 if (ret)
410 return ret;
411
ce8614a3 412 BUG_ON(refcount_read(&alg->cra_refcnt) != 1);
cce9e06d
HX
413 if (alg->cra_destroy)
414 alg->cra_destroy(alg);
415
6bfd4809 416 crypto_remove_final(&list);
cce9e06d
HX
417 return 0;
418}
419EXPORT_SYMBOL_GPL(crypto_unregister_alg);
420
4b004346
MB
421int crypto_register_algs(struct crypto_alg *algs, int count)
422{
423 int i, ret;
424
425 for (i = 0; i < count; i++) {
426 ret = crypto_register_alg(&algs[i]);
427 if (ret)
428 goto err;
429 }
430
431 return 0;
432
433err:
434 for (--i; i >= 0; --i)
435 crypto_unregister_alg(&algs[i]);
436
437 return ret;
438}
439EXPORT_SYMBOL_GPL(crypto_register_algs);
440
441int crypto_unregister_algs(struct crypto_alg *algs, int count)
442{
443 int i, ret;
444
445 for (i = 0; i < count; i++) {
446 ret = crypto_unregister_alg(&algs[i]);
447 if (ret)
448 pr_err("Failed to unregister %s %s: %d\n",
449 algs[i].cra_driver_name, algs[i].cra_name, ret);
450 }
451
452 return 0;
453}
454EXPORT_SYMBOL_GPL(crypto_unregister_algs);
455
4cc7720c
HX
456int crypto_register_template(struct crypto_template *tmpl)
457{
458 struct crypto_template *q;
459 int err = -EEXIST;
460
461 down_write(&crypto_alg_sem);
462
002c77a4
JW
463 crypto_check_module_sig(tmpl->module);
464
4cc7720c
HX
465 list_for_each_entry(q, &crypto_template_list, list) {
466 if (q == tmpl)
467 goto out;
468 }
469
470 list_add(&tmpl->list, &crypto_template_list);
471 err = 0;
472out:
473 up_write(&crypto_alg_sem);
474 return err;
475}
476EXPORT_SYMBOL_GPL(crypto_register_template);
477
9572442d
XW
478int crypto_register_templates(struct crypto_template *tmpls, int count)
479{
480 int i, err;
481
482 for (i = 0; i < count; i++) {
483 err = crypto_register_template(&tmpls[i]);
484 if (err)
485 goto out;
486 }
487 return 0;
488
489out:
490 for (--i; i >= 0; --i)
491 crypto_unregister_template(&tmpls[i]);
492 return err;
493}
494EXPORT_SYMBOL_GPL(crypto_register_templates);
495
4cc7720c
HX
496void crypto_unregister_template(struct crypto_template *tmpl)
497{
498 struct crypto_instance *inst;
b67bfe0d 499 struct hlist_node *n;
4cc7720c 500 struct hlist_head *list;
6bfd4809 501 LIST_HEAD(users);
4cc7720c
HX
502
503 down_write(&crypto_alg_sem);
504
505 BUG_ON(list_empty(&tmpl->list));
506 list_del_init(&tmpl->list);
507
508 list = &tmpl->instances;
b67bfe0d 509 hlist_for_each_entry(inst, list, list) {
6bfd4809 510 int err = crypto_remove_alg(&inst->alg, &users);
0efcb8d5 511
6bfd4809 512 BUG_ON(err);
4cc7720c
HX
513 }
514
515 up_write(&crypto_alg_sem);
516
b67bfe0d 517 hlist_for_each_entry_safe(inst, n, list, list) {
ce8614a3 518 BUG_ON(refcount_read(&inst->alg.cra_refcnt) != 1);
319382a6 519 crypto_free_instance(inst);
4cc7720c 520 }
6bfd4809 521 crypto_remove_final(&users);
4cc7720c
HX
522}
523EXPORT_SYMBOL_GPL(crypto_unregister_template);
524
9572442d
XW
525void crypto_unregister_templates(struct crypto_template *tmpls, int count)
526{
527 int i;
528
529 for (i = count - 1; i >= 0; --i)
530 crypto_unregister_template(&tmpls[i]);
531}
532EXPORT_SYMBOL_GPL(crypto_unregister_templates);
533
4cc7720c
HX
534static struct crypto_template *__crypto_lookup_template(const char *name)
535{
536 struct crypto_template *q, *tmpl = NULL;
537
538 down_read(&crypto_alg_sem);
539 list_for_each_entry(q, &crypto_template_list, list) {
540 if (strcmp(q->name, name))
541 continue;
542 if (unlikely(!crypto_tmpl_get(q)))
543 continue;
544
545 tmpl = q;
546 break;
547 }
548 up_read(&crypto_alg_sem);
549
550 return tmpl;
551}
552
553struct crypto_template *crypto_lookup_template(const char *name)
554{
4943ba16
KC
555 return try_then_request_module(__crypto_lookup_template(name),
556 "crypto-%s", name);
4cc7720c
HX
557}
558EXPORT_SYMBOL_GPL(crypto_lookup_template);
559
560int crypto_register_instance(struct crypto_template *tmpl,
561 struct crypto_instance *inst)
562{
73d3864a
HX
563 struct crypto_larval *larval;
564 int err;
4cc7720c 565
4cc7720c
HX
566 err = crypto_check_alg(&inst->alg);
567 if (err)
9c521a20
SM
568 return err;
569
4cc7720c 570 inst->alg.cra_module = tmpl->module;
64a947b1 571 inst->alg.cra_flags |= CRYPTO_ALG_INSTANCE;
4cc7720c
HX
572
573 down_write(&crypto_alg_sem);
574
73d3864a
HX
575 larval = __crypto_register_alg(&inst->alg);
576 if (IS_ERR(larval))
4cc7720c
HX
577 goto unlock;
578
579 hlist_add_head(&inst->list, &tmpl->instances);
580 inst->tmpl = tmpl;
581
582unlock:
583 up_write(&crypto_alg_sem);
584
73d3864a
HX
585 err = PTR_ERR(larval);
586 if (IS_ERR(larval))
587 goto err;
588
589 crypto_wait_for_test(larval);
590 err = 0;
6bfd4809 591
4cc7720c
HX
592err:
593 return err;
594}
595EXPORT_SYMBOL_GPL(crypto_register_instance);
ce3fd840 596
87b16756 597int crypto_unregister_instance(struct crypto_instance *inst)
ce3fd840 598{
1f723710 599 LIST_HEAD(list);
ce3fd840 600
ce3fd840
SK
601 down_write(&crypto_alg_sem);
602
87b16756 603 crypto_remove_spawns(&inst->alg, &list, NULL);
1f723710 604 crypto_remove_instance(inst, &list);
ce3fd840
SK
605
606 up_write(&crypto_alg_sem);
607
1f723710 608 crypto_remove_final(&list);
ce3fd840
SK
609
610 return 0;
611}
612EXPORT_SYMBOL_GPL(crypto_unregister_instance);
4cc7720c 613
6bfd4809 614int crypto_init_spawn(struct crypto_spawn *spawn, struct crypto_alg *alg,
a73e6996 615 struct crypto_instance *inst, u32 mask)
6bfd4809
HX
616{
617 int err = -EAGAIN;
618
6b476662
EB
619 if (WARN_ON_ONCE(inst == NULL))
620 return -EINVAL;
621
6bfd4809 622 spawn->inst = inst;
a73e6996 623 spawn->mask = mask;
6bfd4809
HX
624
625 down_write(&crypto_alg_sem);
626 if (!crypto_is_moribund(alg)) {
627 list_add(&spawn->list, &alg->cra_users);
628 spawn->alg = alg;
629 err = 0;
630 }
631 up_write(&crypto_alg_sem);
632
633 return err;
634}
635EXPORT_SYMBOL_GPL(crypto_init_spawn);
636
97eedce1
HX
637int crypto_init_spawn2(struct crypto_spawn *spawn, struct crypto_alg *alg,
638 struct crypto_instance *inst,
639 const struct crypto_type *frontend)
640{
641 int err = -EINVAL;
642
c614e109 643 if ((alg->cra_flags ^ frontend->type) & frontend->maskset)
97eedce1
HX
644 goto out;
645
646 spawn->frontend = frontend;
647 err = crypto_init_spawn(spawn, alg, inst, frontend->maskset);
648
649out:
650 return err;
651}
652EXPORT_SYMBOL_GPL(crypto_init_spawn2);
653
d6ef2f19
HX
654int crypto_grab_spawn(struct crypto_spawn *spawn, const char *name,
655 u32 type, u32 mask)
656{
657 struct crypto_alg *alg;
658 int err;
659
660 alg = crypto_find_alg(name, spawn->frontend, type, mask);
661 if (IS_ERR(alg))
662 return PTR_ERR(alg);
663
664 err = crypto_init_spawn(spawn, alg, spawn->inst, mask);
665 crypto_mod_put(alg);
666 return err;
667}
668EXPORT_SYMBOL_GPL(crypto_grab_spawn);
669
6bfd4809
HX
670void crypto_drop_spawn(struct crypto_spawn *spawn)
671{
7ede5a5b
HX
672 if (!spawn->alg)
673 return;
674
6bfd4809
HX
675 down_write(&crypto_alg_sem);
676 list_del(&spawn->list);
677 up_write(&crypto_alg_sem);
678}
679EXPORT_SYMBOL_GPL(crypto_drop_spawn);
680
97eedce1 681static struct crypto_alg *crypto_spawn_alg(struct crypto_spawn *spawn)
6bfd4809
HX
682{
683 struct crypto_alg *alg;
684 struct crypto_alg *alg2;
6bfd4809
HX
685
686 down_read(&crypto_alg_sem);
687 alg = spawn->alg;
688 alg2 = alg;
689 if (alg2)
690 alg2 = crypto_mod_get(alg2);
691 up_read(&crypto_alg_sem);
692
693 if (!alg2) {
694 if (alg)
695 crypto_shoot_alg(alg);
696 return ERR_PTR(-EAGAIN);
697 }
698
97eedce1
HX
699 return alg;
700}
701
702struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn, u32 type,
703 u32 mask)
704{
705 struct crypto_alg *alg;
706 struct crypto_tfm *tfm;
707
708 alg = crypto_spawn_alg(spawn);
709 if (IS_ERR(alg))
710 return ERR_CAST(alg);
711
2e306ee0
HX
712 tfm = ERR_PTR(-EINVAL);
713 if (unlikely((alg->cra_flags ^ type) & mask))
714 goto out_put_alg;
715
27d2a330 716 tfm = __crypto_alloc_tfm(alg, type, mask);
6bfd4809 717 if (IS_ERR(tfm))
2e306ee0
HX
718 goto out_put_alg;
719
720 return tfm;
6bfd4809 721
2e306ee0
HX
722out_put_alg:
723 crypto_mod_put(alg);
6bfd4809
HX
724 return tfm;
725}
726EXPORT_SYMBOL_GPL(crypto_spawn_tfm);
727
97eedce1
HX
728void *crypto_spawn_tfm2(struct crypto_spawn *spawn)
729{
730 struct crypto_alg *alg;
731 struct crypto_tfm *tfm;
732
733 alg = crypto_spawn_alg(spawn);
734 if (IS_ERR(alg))
735 return ERR_CAST(alg);
736
737 tfm = crypto_create_tfm(alg, spawn->frontend);
738 if (IS_ERR(tfm))
739 goto out_put_alg;
740
741 return tfm;
742
743out_put_alg:
744 crypto_mod_put(alg);
745 return tfm;
746}
747EXPORT_SYMBOL_GPL(crypto_spawn_tfm2);
748
2825982d
HX
749int crypto_register_notifier(struct notifier_block *nb)
750{
751 return blocking_notifier_chain_register(&crypto_chain, nb);
752}
753EXPORT_SYMBOL_GPL(crypto_register_notifier);
754
755int crypto_unregister_notifier(struct notifier_block *nb)
756{
757 return blocking_notifier_chain_unregister(&crypto_chain, nb);
758}
759EXPORT_SYMBOL_GPL(crypto_unregister_notifier);
760
ebc610e5 761struct crypto_attr_type *crypto_get_attr_type(struct rtattr **tb)
7fed0bf2 762{
39e1ee01 763 struct rtattr *rta = tb[0];
ebc610e5
HX
764 struct crypto_attr_type *algt;
765
766 if (!rta)
767 return ERR_PTR(-ENOENT);
768 if (RTA_PAYLOAD(rta) < sizeof(*algt))
769 return ERR_PTR(-EINVAL);
39e1ee01
HX
770 if (rta->rta_type != CRYPTOA_TYPE)
771 return ERR_PTR(-EINVAL);
ebc610e5
HX
772
773 algt = RTA_DATA(rta);
774
775 return algt;
776}
777EXPORT_SYMBOL_GPL(crypto_get_attr_type);
778
779int crypto_check_attr_type(struct rtattr **tb, u32 type)
780{
781 struct crypto_attr_type *algt;
782
783 algt = crypto_get_attr_type(tb);
784 if (IS_ERR(algt))
785 return PTR_ERR(algt);
786
787 if ((algt->type ^ type) & algt->mask)
788 return -EINVAL;
789
790 return 0;
791}
792EXPORT_SYMBOL_GPL(crypto_check_attr_type);
793
68b6c7d6 794const char *crypto_attr_alg_name(struct rtattr *rta)
ebc610e5 795{
7fed0bf2
HX
796 struct crypto_attr_alg *alga;
797
ebc610e5
HX
798 if (!rta)
799 return ERR_PTR(-ENOENT);
800 if (RTA_PAYLOAD(rta) < sizeof(*alga))
7fed0bf2 801 return ERR_PTR(-EINVAL);
39e1ee01
HX
802 if (rta->rta_type != CRYPTOA_ALG)
803 return ERR_PTR(-EINVAL);
7fed0bf2
HX
804
805 alga = RTA_DATA(rta);
806 alga->name[CRYPTO_MAX_ALG_NAME - 1] = 0;
807
68b6c7d6
HX
808 return alga->name;
809}
810EXPORT_SYMBOL_GPL(crypto_attr_alg_name);
811
d06854f0
HX
812struct crypto_alg *crypto_attr_alg2(struct rtattr *rta,
813 const struct crypto_type *frontend,
814 u32 type, u32 mask)
68b6c7d6
HX
815{
816 const char *name;
68b6c7d6
HX
817
818 name = crypto_attr_alg_name(rta);
68b6c7d6 819 if (IS_ERR(name))
3e8afe35 820 return ERR_CAST(name);
68b6c7d6 821
d06854f0 822 return crypto_find_alg(name, frontend, type, mask);
7fed0bf2 823}
d06854f0 824EXPORT_SYMBOL_GPL(crypto_attr_alg2);
3c09f17c
HX
825
826int crypto_attr_u32(struct rtattr *rta, u32 *num)
827{
828 struct crypto_attr_u32 *nu32;
829
830 if (!rta)
831 return -ENOENT;
832 if (RTA_PAYLOAD(rta) < sizeof(*nu32))
833 return -EINVAL;
834 if (rta->rta_type != CRYPTOA_U32)
835 return -EINVAL;
836
837 nu32 = RTA_DATA(rta);
838 *num = nu32->num;
839
840 return 0;
841}
842EXPORT_SYMBOL_GPL(crypto_attr_u32);
7fed0bf2 843
32f27c74
HX
844int crypto_inst_setname(struct crypto_instance *inst, const char *name,
845 struct crypto_alg *alg)
846{
847 if (snprintf(inst->alg.cra_name, CRYPTO_MAX_ALG_NAME, "%s(%s)", name,
848 alg->cra_name) >= CRYPTO_MAX_ALG_NAME)
849 return -ENAMETOOLONG;
850
851 if (snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s(%s)",
852 name, alg->cra_driver_name) >= CRYPTO_MAX_ALG_NAME)
853 return -ENAMETOOLONG;
854
855 return 0;
856}
857EXPORT_SYMBOL_GPL(crypto_inst_setname);
858
14aa1a83
EB
859void *crypto_alloc_instance(const char *name, struct crypto_alg *alg,
860 unsigned int head)
7fed0bf2
HX
861{
862 struct crypto_instance *inst;
70ec7bb9 863 char *p;
7fed0bf2
HX
864 int err;
865
70ec7bb9
HX
866 p = kzalloc(head + sizeof(*inst) + sizeof(struct crypto_spawn),
867 GFP_KERNEL);
868 if (!p)
7fed0bf2
HX
869 return ERR_PTR(-ENOMEM);
870
70ec7bb9
HX
871 inst = (void *)(p + head);
872
32f27c74
HX
873 err = crypto_inst_setname(inst, name, alg);
874 if (err)
7fed0bf2
HX
875 goto err_free_inst;
876
70ec7bb9
HX
877 return p;
878
879err_free_inst:
880 kfree(p);
881 return ERR_PTR(err);
882}
7fed0bf2
HX
883EXPORT_SYMBOL_GPL(crypto_alloc_instance);
884
b5b7f088
HX
885void crypto_init_queue(struct crypto_queue *queue, unsigned int max_qlen)
886{
887 INIT_LIST_HEAD(&queue->list);
888 queue->backlog = &queue->list;
889 queue->qlen = 0;
890 queue->max_qlen = max_qlen;
891}
892EXPORT_SYMBOL_GPL(crypto_init_queue);
893
894int crypto_enqueue_request(struct crypto_queue *queue,
895 struct crypto_async_request *request)
896{
897 int err = -EINPROGRESS;
898
899 if (unlikely(queue->qlen >= queue->max_qlen)) {
6b80ea38
GBY
900 if (!(request->flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) {
901 err = -ENOSPC;
b5b7f088 902 goto out;
6b80ea38
GBY
903 }
904 err = -EBUSY;
b5b7f088
HX
905 if (queue->backlog == &queue->list)
906 queue->backlog = &request->list;
907 }
908
909 queue->qlen++;
910 list_add_tail(&request->list, &queue->list);
911
912out:
913 return err;
914}
915EXPORT_SYMBOL_GPL(crypto_enqueue_request);
916
31d228cc 917struct crypto_async_request *crypto_dequeue_request(struct crypto_queue *queue)
b5b7f088
HX
918{
919 struct list_head *request;
920
921 if (unlikely(!queue->qlen))
922 return NULL;
923
924 queue->qlen--;
925
926 if (queue->backlog != &queue->list)
927 queue->backlog = queue->backlog->next;
928
929 request = queue->list.next;
930 list_del(request);
931
31d228cc 932 return list_entry(request, struct crypto_async_request, list);
b5b7f088
HX
933}
934EXPORT_SYMBOL_GPL(crypto_dequeue_request);
935
7613636d
HX
936static inline void crypto_inc_byte(u8 *a, unsigned int size)
937{
938 u8 *b = (a + size);
939 u8 c;
940
941 for (; size; size--) {
942 c = *--b + 1;
943 *b = c;
944 if (c)
945 break;
946 }
947}
948
949void crypto_inc(u8 *a, unsigned int size)
950{
951 __be32 *b = (__be32 *)(a + size);
952 u32 c;
953
db91af0f 954 if (IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) ||
27c539ae 955 IS_ALIGNED((unsigned long)b, __alignof__(*b)))
db91af0f
AB
956 for (; size >= 4; size -= 4) {
957 c = be32_to_cpu(*--b) + 1;
958 *b = cpu_to_be32(c);
27c539ae 959 if (likely(c))
db91af0f
AB
960 return;
961 }
7613636d
HX
962
963 crypto_inc_byte(a, size);
964}
965EXPORT_SYMBOL_GPL(crypto_inc);
966
a7c391f0 967void __crypto_xor(u8 *dst, const u8 *src1, const u8 *src2, unsigned int len)
7613636d 968{
db91af0f
AB
969 int relalign = 0;
970
971 if (!IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)) {
972 int size = sizeof(unsigned long);
a7c391f0
AB
973 int d = (((unsigned long)dst ^ (unsigned long)src1) |
974 ((unsigned long)dst ^ (unsigned long)src2)) &
975 (size - 1);
db91af0f
AB
976
977 relalign = d ? 1 << __ffs(d) : size;
978
979 /*
980 * If we care about alignment, process as many bytes as
981 * needed to advance dst and src to values whose alignments
982 * equal their relative alignment. This will allow us to
983 * process the remainder of the input using optimal strides.
984 */
985 while (((unsigned long)dst & (relalign - 1)) && len > 0) {
a7c391f0 986 *dst++ = *src1++ ^ *src2++;
db91af0f
AB
987 len--;
988 }
989 }
7613636d 990
db91af0f 991 while (IS_ENABLED(CONFIG_64BIT) && len >= 8 && !(relalign & 7)) {
a7c391f0 992 *(u64 *)dst = *(u64 *)src1 ^ *(u64 *)src2;
db91af0f 993 dst += 8;
a7c391f0
AB
994 src1 += 8;
995 src2 += 8;
db91af0f
AB
996 len -= 8;
997 }
7613636d 998
db91af0f 999 while (len >= 4 && !(relalign & 3)) {
a7c391f0 1000 *(u32 *)dst = *(u32 *)src1 ^ *(u32 *)src2;
db91af0f 1001 dst += 4;
a7c391f0
AB
1002 src1 += 4;
1003 src2 += 4;
db91af0f
AB
1004 len -= 4;
1005 }
1006
1007 while (len >= 2 && !(relalign & 1)) {
a7c391f0 1008 *(u16 *)dst = *(u16 *)src1 ^ *(u16 *)src2;
db91af0f 1009 dst += 2;
a7c391f0
AB
1010 src1 += 2;
1011 src2 += 2;
db91af0f
AB
1012 len -= 2;
1013 }
7613636d 1014
db91af0f 1015 while (len--)
a7c391f0 1016 *dst++ = *src1++ ^ *src2++;
7613636d 1017}
db91af0f 1018EXPORT_SYMBOL_GPL(__crypto_xor);
7613636d 1019
38d21433
HX
1020unsigned int crypto_alg_extsize(struct crypto_alg *alg)
1021{
c2110f28
HX
1022 return alg->cra_ctxsize +
1023 (alg->cra_alignmask & ~(crypto_tfm_ctx_alignment() - 1));
38d21433
HX
1024}
1025EXPORT_SYMBOL_GPL(crypto_alg_extsize);
1026
f2aefdab
HX
1027int crypto_type_has_alg(const char *name, const struct crypto_type *frontend,
1028 u32 type, u32 mask)
1029{
1030 int ret = 0;
1031 struct crypto_alg *alg = crypto_find_alg(name, frontend, type, mask);
1032
1033 if (!IS_ERR(alg)) {
1034 crypto_mod_put(alg);
1035 ret = 1;
1036 }
1037
1038 return ret;
1039}
1040EXPORT_SYMBOL_GPL(crypto_type_has_alg);
1041
f7d76e05 1042#ifdef CONFIG_CRYPTO_STATS
1f6669b9
CL
1043void crypto_stats_init(struct crypto_alg *alg)
1044{
1045 memset(&alg->stats, 0, sizeof(alg->stats));
1046}
1047EXPORT_SYMBOL_GPL(crypto_stats_init);
1048
f7d76e05
CL
1049void crypto_stats_get(struct crypto_alg *alg)
1050{
1051 crypto_alg_get(alg);
1052}
1053EXPORT_SYMBOL_GPL(crypto_stats_get);
1054
1055void crypto_stats_ablkcipher_encrypt(unsigned int nbytes, int ret,
1056 struct crypto_alg *alg)
1057{
1058 if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
44f13133 1059 atomic64_inc(&alg->stats.cipher.err_cnt);
f7d76e05 1060 } else {
17c18f9e
CL
1061 atomic64_inc(&alg->stats.cipher.encrypt_cnt);
1062 atomic64_add(nbytes, &alg->stats.cipher.encrypt_tlen);
f7d76e05
CL
1063 }
1064 crypto_alg_put(alg);
1065}
1066EXPORT_SYMBOL_GPL(crypto_stats_ablkcipher_encrypt);
1067
1068void crypto_stats_ablkcipher_decrypt(unsigned int nbytes, int ret,
1069 struct crypto_alg *alg)
1070{
1071 if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
44f13133 1072 atomic64_inc(&alg->stats.cipher.err_cnt);
f7d76e05 1073 } else {
17c18f9e
CL
1074 atomic64_inc(&alg->stats.cipher.decrypt_cnt);
1075 atomic64_add(nbytes, &alg->stats.cipher.decrypt_tlen);
f7d76e05
CL
1076 }
1077 crypto_alg_put(alg);
1078}
1079EXPORT_SYMBOL_GPL(crypto_stats_ablkcipher_decrypt);
1080
1081void crypto_stats_aead_encrypt(unsigned int cryptlen, struct crypto_alg *alg,
1082 int ret)
1083{
1084 if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
44f13133 1085 atomic64_inc(&alg->stats.aead.err_cnt);
f7d76e05 1086 } else {
17c18f9e
CL
1087 atomic64_inc(&alg->stats.aead.encrypt_cnt);
1088 atomic64_add(cryptlen, &alg->stats.aead.encrypt_tlen);
f7d76e05
CL
1089 }
1090 crypto_alg_put(alg);
1091}
1092EXPORT_SYMBOL_GPL(crypto_stats_aead_encrypt);
1093
1094void crypto_stats_aead_decrypt(unsigned int cryptlen, struct crypto_alg *alg,
1095 int ret)
1096{
1097 if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
44f13133 1098 atomic64_inc(&alg->stats.aead.err_cnt);
f7d76e05 1099 } else {
17c18f9e
CL
1100 atomic64_inc(&alg->stats.aead.decrypt_cnt);
1101 atomic64_add(cryptlen, &alg->stats.aead.decrypt_tlen);
f7d76e05
CL
1102 }
1103 crypto_alg_put(alg);
1104}
1105EXPORT_SYMBOL_GPL(crypto_stats_aead_decrypt);
1106
1107void crypto_stats_akcipher_encrypt(unsigned int src_len, int ret,
1108 struct crypto_alg *alg)
1109{
1110 if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
44f13133 1111 atomic64_inc(&alg->stats.akcipher.err_cnt);
f7d76e05 1112 } else {
17c18f9e
CL
1113 atomic64_inc(&alg->stats.akcipher.encrypt_cnt);
1114 atomic64_add(src_len, &alg->stats.akcipher.encrypt_tlen);
f7d76e05
CL
1115 }
1116 crypto_alg_put(alg);
1117}
1118EXPORT_SYMBOL_GPL(crypto_stats_akcipher_encrypt);
1119
1120void crypto_stats_akcipher_decrypt(unsigned int src_len, int ret,
1121 struct crypto_alg *alg)
1122{
1123 if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
44f13133 1124 atomic64_inc(&alg->stats.akcipher.err_cnt);
f7d76e05 1125 } else {
17c18f9e
CL
1126 atomic64_inc(&alg->stats.akcipher.decrypt_cnt);
1127 atomic64_add(src_len, &alg->stats.akcipher.decrypt_tlen);
f7d76e05
CL
1128 }
1129 crypto_alg_put(alg);
1130}
1131EXPORT_SYMBOL_GPL(crypto_stats_akcipher_decrypt);
1132
1133void crypto_stats_akcipher_sign(int ret, struct crypto_alg *alg)
1134{
1135 if (ret && ret != -EINPROGRESS && ret != -EBUSY)
44f13133 1136 atomic64_inc(&alg->stats.akcipher.err_cnt);
f7d76e05 1137 else
17c18f9e 1138 atomic64_inc(&alg->stats.akcipher.sign_cnt);
f7d76e05
CL
1139 crypto_alg_put(alg);
1140}
1141EXPORT_SYMBOL_GPL(crypto_stats_akcipher_sign);
1142
1143void crypto_stats_akcipher_verify(int ret, struct crypto_alg *alg)
1144{
1145 if (ret && ret != -EINPROGRESS && ret != -EBUSY)
44f13133 1146 atomic64_inc(&alg->stats.akcipher.err_cnt);
f7d76e05 1147 else
17c18f9e 1148 atomic64_inc(&alg->stats.akcipher.verify_cnt);
f7d76e05
CL
1149 crypto_alg_put(alg);
1150}
1151EXPORT_SYMBOL_GPL(crypto_stats_akcipher_verify);
1152
1153void crypto_stats_compress(unsigned int slen, int ret, struct crypto_alg *alg)
1154{
1155 if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
44f13133 1156 atomic64_inc(&alg->stats.compress.err_cnt);
f7d76e05 1157 } else {
17c18f9e
CL
1158 atomic64_inc(&alg->stats.compress.compress_cnt);
1159 atomic64_add(slen, &alg->stats.compress.compress_tlen);
f7d76e05
CL
1160 }
1161 crypto_alg_put(alg);
1162}
1163EXPORT_SYMBOL_GPL(crypto_stats_compress);
1164
1165void crypto_stats_decompress(unsigned int slen, int ret, struct crypto_alg *alg)
1166{
1167 if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
44f13133 1168 atomic64_inc(&alg->stats.compress.err_cnt);
f7d76e05 1169 } else {
17c18f9e
CL
1170 atomic64_inc(&alg->stats.compress.decompress_cnt);
1171 atomic64_add(slen, &alg->stats.compress.decompress_tlen);
f7d76e05
CL
1172 }
1173 crypto_alg_put(alg);
1174}
1175EXPORT_SYMBOL_GPL(crypto_stats_decompress);
1176
1177void crypto_stats_ahash_update(unsigned int nbytes, int ret,
1178 struct crypto_alg *alg)
1179{
1180 if (ret && ret != -EINPROGRESS && ret != -EBUSY)
44f13133 1181 atomic64_inc(&alg->stats.hash.err_cnt);
f7d76e05 1182 else
17c18f9e 1183 atomic64_add(nbytes, &alg->stats.hash.hash_tlen);
f7d76e05
CL
1184 crypto_alg_put(alg);
1185}
1186EXPORT_SYMBOL_GPL(crypto_stats_ahash_update);
1187
1188void crypto_stats_ahash_final(unsigned int nbytes, int ret,
1189 struct crypto_alg *alg)
1190{
1191 if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
44f13133 1192 atomic64_inc(&alg->stats.hash.err_cnt);
f7d76e05 1193 } else {
17c18f9e
CL
1194 atomic64_inc(&alg->stats.hash.hash_cnt);
1195 atomic64_add(nbytes, &alg->stats.hash.hash_tlen);
f7d76e05
CL
1196 }
1197 crypto_alg_put(alg);
1198}
1199EXPORT_SYMBOL_GPL(crypto_stats_ahash_final);
1200
1201void crypto_stats_kpp_set_secret(struct crypto_alg *alg, int ret)
1202{
1203 if (ret)
44f13133 1204 atomic64_inc(&alg->stats.kpp.err_cnt);
f7d76e05 1205 else
17c18f9e 1206 atomic64_inc(&alg->stats.kpp.setsecret_cnt);
f7d76e05
CL
1207 crypto_alg_put(alg);
1208}
1209EXPORT_SYMBOL_GPL(crypto_stats_kpp_set_secret);
1210
1211void crypto_stats_kpp_generate_public_key(struct crypto_alg *alg, int ret)
1212{
1213 if (ret)
44f13133 1214 atomic64_inc(&alg->stats.kpp.err_cnt);
f7d76e05 1215 else
17c18f9e 1216 atomic64_inc(&alg->stats.kpp.generate_public_key_cnt);
f7d76e05
CL
1217 crypto_alg_put(alg);
1218}
1219EXPORT_SYMBOL_GPL(crypto_stats_kpp_generate_public_key);
1220
1221void crypto_stats_kpp_compute_shared_secret(struct crypto_alg *alg, int ret)
1222{
1223 if (ret)
44f13133 1224 atomic64_inc(&alg->stats.kpp.err_cnt);
f7d76e05 1225 else
17c18f9e 1226 atomic64_inc(&alg->stats.kpp.compute_shared_secret_cnt);
f7d76e05
CL
1227 crypto_alg_put(alg);
1228}
1229EXPORT_SYMBOL_GPL(crypto_stats_kpp_compute_shared_secret);
1230
1231void crypto_stats_rng_seed(struct crypto_alg *alg, int ret)
1232{
1233 if (ret && ret != -EINPROGRESS && ret != -EBUSY)
44f13133 1234 atomic64_inc(&alg->stats.rng.err_cnt);
f7d76e05 1235 else
17c18f9e 1236 atomic64_inc(&alg->stats.rng.seed_cnt);
f7d76e05
CL
1237 crypto_alg_put(alg);
1238}
1239EXPORT_SYMBOL_GPL(crypto_stats_rng_seed);
1240
1241void crypto_stats_rng_generate(struct crypto_alg *alg, unsigned int dlen,
1242 int ret)
1243{
1244 if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
44f13133 1245 atomic64_inc(&alg->stats.rng.err_cnt);
f7d76e05 1246 } else {
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1247 atomic64_inc(&alg->stats.rng.generate_cnt);
1248 atomic64_add(dlen, &alg->stats.rng.generate_tlen);
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1249 }
1250 crypto_alg_put(alg);
1251}
1252EXPORT_SYMBOL_GPL(crypto_stats_rng_generate);
1253
1254void crypto_stats_skcipher_encrypt(unsigned int cryptlen, int ret,
1255 struct crypto_alg *alg)
1256{
1257 if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
44f13133 1258 atomic64_inc(&alg->stats.cipher.err_cnt);
f7d76e05 1259 } else {
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1260 atomic64_inc(&alg->stats.cipher.encrypt_cnt);
1261 atomic64_add(cryptlen, &alg->stats.cipher.encrypt_tlen);
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1262 }
1263 crypto_alg_put(alg);
1264}
1265EXPORT_SYMBOL_GPL(crypto_stats_skcipher_encrypt);
1266
1267void crypto_stats_skcipher_decrypt(unsigned int cryptlen, int ret,
1268 struct crypto_alg *alg)
1269{
1270 if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
44f13133 1271 atomic64_inc(&alg->stats.cipher.err_cnt);
f7d76e05 1272 } else {
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1273 atomic64_inc(&alg->stats.cipher.decrypt_cnt);
1274 atomic64_add(cryptlen, &alg->stats.cipher.decrypt_tlen);
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1275 }
1276 crypto_alg_put(alg);
1277}
1278EXPORT_SYMBOL_GPL(crypto_stats_skcipher_decrypt);
1279#endif
1280
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1281static int __init crypto_algapi_init(void)
1282{
1283 crypto_init_proc();
1284 return 0;
1285}
1286
1287static void __exit crypto_algapi_exit(void)
1288{
1289 crypto_exit_proc();
1290}
1291
1292module_init(crypto_algapi_init);
1293module_exit(crypto_algapi_exit);
1294
1295MODULE_LICENSE("GPL");
1296MODULE_DESCRIPTION("Cryptographic algorithms API");