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Commit | Line | Data |
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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 |
22 | static LIST_HEAD(crypto_template_list); |
23 | ||
cce9e06d HX |
24 | static inline int crypto_set_driver_name(struct crypto_alg *alg) |
25 | { | |
26 | static const char suffix[] = "-generic"; | |
27 | char *driver_name = alg->cra_driver_name; | |
28 | int len; | |
29 | ||
30 | if (*driver_name) | |
31 | return 0; | |
32 | ||
33 | len = strlcpy(driver_name, alg->cra_name, CRYPTO_MAX_ALG_NAME); | |
34 | if (len + sizeof(suffix) > CRYPTO_MAX_ALG_NAME) | |
35 | return -ENAMETOOLONG; | |
36 | ||
37 | memcpy(driver_name + len, suffix, sizeof(suffix)); | |
38 | return 0; | |
39 | } | |
40 | ||
002c77a4 JW |
41 | static inline void crypto_check_module_sig(struct module *mod) |
42 | { | |
59afdc7b | 43 | if (fips_enabled && mod && !module_sig_ok(mod)) |
002c77a4 | 44 | panic("Module %s signature verification failed in FIPS mode\n", |
bd4a7c69 | 45 | module_name(mod)); |
002c77a4 JW |
46 | } |
47 | ||
4cc7720c | 48 | static int crypto_check_alg(struct crypto_alg *alg) |
cce9e06d | 49 | { |
002c77a4 JW |
50 | crypto_check_module_sig(alg->cra_module); |
51 | ||
cce9e06d HX |
52 | if (alg->cra_alignmask & (alg->cra_alignmask + 1)) |
53 | return -EINVAL; | |
54 | ||
a9f7f88a KC |
55 | /* General maximums for all algs. */ |
56 | if (alg->cra_alignmask > MAX_ALGAPI_ALIGNMASK) | |
cce9e06d HX |
57 | return -EINVAL; |
58 | ||
a9f7f88a KC |
59 | if (alg->cra_blocksize > MAX_ALGAPI_BLOCKSIZE) |
60 | return -EINVAL; | |
61 | ||
62 | /* Lower maximums for specific alg types. */ | |
13c935bb SM |
63 | if (!alg->cra_type && (alg->cra_flags & CRYPTO_ALG_TYPE_MASK) == |
64 | CRYPTO_ALG_TYPE_CIPHER) { | |
65 | if (alg->cra_alignmask > MAX_CIPHER_ALIGNMASK) | |
66 | return -EINVAL; | |
67 | ||
68 | if (alg->cra_blocksize > MAX_CIPHER_BLOCKSIZE) | |
69 | return -EINVAL; | |
70 | } | |
71 | ||
cce9e06d HX |
72 | if (alg->cra_priority < 0) |
73 | return -EINVAL; | |
cce9e06d | 74 | |
ce8614a3 | 75 | refcount_set(&alg->cra_refcnt, 1); |
e9b8e5be | 76 | |
4cc7720c HX |
77 | return crypto_set_driver_name(alg); |
78 | } | |
79 | ||
319382a6 HX |
80 | static void crypto_free_instance(struct crypto_instance *inst) |
81 | { | |
82 | if (!inst->alg.cra_type->free) { | |
83 | inst->tmpl->free(inst); | |
84 | return; | |
85 | } | |
86 | ||
87 | inst->alg.cra_type->free(inst); | |
88 | } | |
89 | ||
6bfd4809 HX |
90 | static void crypto_destroy_instance(struct crypto_alg *alg) |
91 | { | |
92 | struct crypto_instance *inst = (void *)alg; | |
93 | struct crypto_template *tmpl = inst->tmpl; | |
94 | ||
319382a6 | 95 | crypto_free_instance(inst); |
6bfd4809 HX |
96 | crypto_tmpl_put(tmpl); |
97 | } | |
98 | ||
2bf29016 HX |
99 | static struct list_head *crypto_more_spawns(struct crypto_alg *alg, |
100 | struct list_head *stack, | |
101 | struct list_head *top, | |
102 | struct list_head *secondary_spawns) | |
103 | { | |
104 | struct crypto_spawn *spawn, *n; | |
105 | ||
304e4818 GT |
106 | spawn = list_first_entry_or_null(stack, struct crypto_spawn, list); |
107 | if (!spawn) | |
2bf29016 HX |
108 | return NULL; |
109 | ||
304e4818 | 110 | n = list_next_entry(spawn, list); |
2bf29016 HX |
111 | |
112 | if (spawn->alg && &n->list != stack && !n->alg) | |
113 | n->alg = (n->list.next == stack) ? alg : | |
304e4818 | 114 | &list_next_entry(n, list)->inst->alg; |
2bf29016 HX |
115 | |
116 | list_move(&spawn->list, secondary_spawns); | |
117 | ||
118 | return &n->list == stack ? top : &n->inst->alg.cra_users; | |
119 | } | |
120 | ||
1f723710 HX |
121 | static void crypto_remove_instance(struct crypto_instance *inst, |
122 | struct list_head *list) | |
6bfd4809 | 123 | { |
a73e6996 | 124 | struct crypto_template *tmpl = inst->tmpl; |
6bfd4809 | 125 | |
a73e6996 HX |
126 | if (crypto_is_dead(&inst->alg)) |
127 | return; | |
6bfd4809 | 128 | |
a73e6996 | 129 | inst->alg.cra_flags |= CRYPTO_ALG_DEAD; |
38cb2419 HX |
130 | if (hlist_unhashed(&inst->list)) |
131 | return; | |
132 | ||
a73e6996 HX |
133 | if (!tmpl || !crypto_tmpl_get(tmpl)) |
134 | return; | |
135 | ||
a73e6996 HX |
136 | list_move(&inst->alg.cra_list, list); |
137 | hlist_del(&inst->list); | |
138 | inst->alg.cra_destroy = crypto_destroy_instance; | |
139 | ||
2bf29016 | 140 | BUG_ON(!list_empty(&inst->alg.cra_users)); |
a73e6996 HX |
141 | } |
142 | ||
89b596ba SK |
143 | void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list, |
144 | struct crypto_alg *nalg) | |
a73e6996 | 145 | { |
2bf29016 | 146 | u32 new_type = (nalg ?: alg)->cra_flags; |
a73e6996 HX |
147 | struct crypto_spawn *spawn, *n; |
148 | LIST_HEAD(secondary_spawns); | |
2bf29016 HX |
149 | struct list_head *spawns; |
150 | LIST_HEAD(stack); | |
151 | LIST_HEAD(top); | |
6bfd4809 | 152 | |
2bf29016 | 153 | spawns = &alg->cra_users; |
a73e6996 HX |
154 | list_for_each_entry_safe(spawn, n, spawns, list) { |
155 | if ((spawn->alg->cra_flags ^ new_type) & spawn->mask) | |
6bfd4809 HX |
156 | continue; |
157 | ||
2bf29016 | 158 | list_move(&spawn->list, &top); |
a73e6996 | 159 | } |
6bfd4809 | 160 | |
2bf29016 HX |
161 | spawns = ⊤ |
162 | do { | |
163 | while (!list_empty(spawns)) { | |
164 | struct crypto_instance *inst; | |
165 | ||
166 | spawn = list_first_entry(spawns, struct crypto_spawn, | |
167 | list); | |
168 | inst = spawn->inst; | |
169 | ||
170 | BUG_ON(&inst->alg == alg); | |
171 | ||
172 | list_move(&spawn->list, &stack); | |
173 | ||
174 | if (&inst->alg == nalg) | |
175 | break; | |
176 | ||
177 | spawn->alg = NULL; | |
178 | spawns = &inst->alg.cra_users; | |
9a006742 EB |
179 | |
180 | /* | |
181 | * We may encounter an unregistered instance here, since | |
182 | * an instance's spawns are set up prior to the instance | |
183 | * being registered. An unregistered instance will have | |
184 | * NULL ->cra_users.next, since ->cra_users isn't | |
185 | * properly initialized until registration. But an | |
186 | * unregistered instance cannot have any users, so treat | |
187 | * it the same as ->cra_users being empty. | |
188 | */ | |
189 | if (spawns->next == NULL) | |
190 | break; | |
2bf29016 HX |
191 | } |
192 | } while ((spawns = crypto_more_spawns(alg, &stack, &top, | |
193 | &secondary_spawns))); | |
194 | ||
195 | list_for_each_entry_safe(spawn, n, &secondary_spawns, list) { | |
196 | if (spawn->alg) | |
197 | list_move(&spawn->list, &spawn->alg->cra_users); | |
198 | else | |
1f723710 | 199 | crypto_remove_instance(spawn->inst, list); |
6bfd4809 HX |
200 | } |
201 | } | |
89b596ba | 202 | EXPORT_SYMBOL_GPL(crypto_remove_spawns); |
6bfd4809 | 203 | |
73d3864a | 204 | static struct crypto_larval *__crypto_register_alg(struct crypto_alg *alg) |
4cc7720c HX |
205 | { |
206 | struct crypto_alg *q; | |
73d3864a | 207 | struct crypto_larval *larval; |
6bfd4809 HX |
208 | int ret = -EAGAIN; |
209 | ||
210 | if (crypto_is_dead(alg)) | |
73d3864a | 211 | goto err; |
6bfd4809 HX |
212 | |
213 | INIT_LIST_HEAD(&alg->cra_users); | |
214 | ||
73d3864a HX |
215 | /* No cheating! */ |
216 | alg->cra_flags &= ~CRYPTO_ALG_TESTED; | |
217 | ||
6bfd4809 | 218 | ret = -EEXIST; |
4cc7720c | 219 | |
cce9e06d | 220 | list_for_each_entry(q, &crypto_alg_list, cra_list) { |
4cc7720c | 221 | if (q == alg) |
73d3864a HX |
222 | goto err; |
223 | ||
b8e15992 HX |
224 | if (crypto_is_moribund(q)) |
225 | continue; | |
226 | ||
73d3864a HX |
227 | if (crypto_is_larval(q)) { |
228 | if (!strcmp(alg->cra_driver_name, q->cra_driver_name)) | |
229 | goto err; | |
230 | continue; | |
231 | } | |
232 | ||
233 | if (!strcmp(q->cra_driver_name, alg->cra_name) || | |
234 | !strcmp(q->cra_name, alg->cra_driver_name)) | |
235 | goto err; | |
236 | } | |
237 | ||
238 | larval = crypto_larval_alloc(alg->cra_name, | |
239 | alg->cra_flags | CRYPTO_ALG_TESTED, 0); | |
240 | if (IS_ERR(larval)) | |
241 | goto out; | |
242 | ||
243 | ret = -ENOENT; | |
244 | larval->adult = crypto_mod_get(alg); | |
245 | if (!larval->adult) | |
246 | goto free_larval; | |
247 | ||
ce8614a3 | 248 | refcount_set(&larval->alg.cra_refcnt, 1); |
73d3864a HX |
249 | memcpy(larval->alg.cra_driver_name, alg->cra_driver_name, |
250 | CRYPTO_MAX_ALG_NAME); | |
251 | larval->alg.cra_priority = alg->cra_priority; | |
252 | ||
253 | list_add(&alg->cra_list, &crypto_alg_list); | |
254 | list_add(&larval->alg.cra_list, &crypto_alg_list); | |
255 | ||
1f6669b9 | 256 | crypto_stats_init(alg); |
cac5818c | 257 | |
5357c6c4 | 258 | out: |
73d3864a HX |
259 | return larval; |
260 | ||
261 | free_larval: | |
262 | kfree(larval); | |
263 | err: | |
264 | larval = ERR_PTR(ret); | |
265 | goto out; | |
266 | } | |
267 | ||
268 | void crypto_alg_tested(const char *name, int err) | |
269 | { | |
270 | struct crypto_larval *test; | |
271 | struct crypto_alg *alg; | |
272 | struct crypto_alg *q; | |
273 | LIST_HEAD(list); | |
274 | ||
275 | down_write(&crypto_alg_sem); | |
276 | list_for_each_entry(q, &crypto_alg_list, cra_list) { | |
b8e15992 | 277 | if (crypto_is_moribund(q) || !crypto_is_larval(q)) |
73d3864a HX |
278 | continue; |
279 | ||
280 | test = (struct crypto_larval *)q; | |
281 | ||
282 | if (!strcmp(q->cra_driver_name, name)) | |
283 | goto found; | |
284 | } | |
285 | ||
c7235857 | 286 | pr_err("alg: Unexpected test result for %s: %d\n", name, err); |
73d3864a HX |
287 | goto unlock; |
288 | ||
289 | found: | |
b8e15992 | 290 | q->cra_flags |= CRYPTO_ALG_DEAD; |
73d3864a HX |
291 | alg = test->adult; |
292 | if (err || list_empty(&alg->cra_list)) | |
293 | goto complete; | |
294 | ||
295 | alg->cra_flags |= CRYPTO_ALG_TESTED; | |
296 | ||
297 | list_for_each_entry(q, &crypto_alg_list, cra_list) { | |
298 | if (q == alg) | |
299 | continue; | |
6bfd4809 HX |
300 | |
301 | if (crypto_is_moribund(q)) | |
302 | continue; | |
303 | ||
304 | if (crypto_is_larval(q)) { | |
2825982d HX |
305 | struct crypto_larval *larval = (void *)q; |
306 | ||
d8058480 HX |
307 | /* |
308 | * Check to see if either our generic name or | |
309 | * specific name can satisfy the name requested | |
310 | * by the larval entry q. | |
311 | */ | |
6bfd4809 HX |
312 | if (strcmp(alg->cra_name, q->cra_name) && |
313 | strcmp(alg->cra_driver_name, q->cra_name)) | |
314 | continue; | |
315 | ||
316 | if (larval->adult) | |
317 | continue; | |
492e2b63 HX |
318 | if ((q->cra_flags ^ alg->cra_flags) & larval->mask) |
319 | continue; | |
2825982d HX |
320 | if (!crypto_mod_get(alg)) |
321 | continue; | |
6bfd4809 | 322 | |
2825982d | 323 | larval->adult = alg; |
6bfd4809 | 324 | continue; |
2825982d | 325 | } |
6bfd4809 HX |
326 | |
327 | if (strcmp(alg->cra_name, q->cra_name)) | |
328 | continue; | |
329 | ||
330 | if (strcmp(alg->cra_driver_name, q->cra_driver_name) && | |
331 | q->cra_priority > alg->cra_priority) | |
332 | continue; | |
333 | ||
2bf29016 | 334 | crypto_remove_spawns(q, &list, alg); |
cce9e06d | 335 | } |
2825982d | 336 | |
73d3864a HX |
337 | complete: |
338 | complete_all(&test->completion); | |
2825982d | 339 | |
73d3864a HX |
340 | unlock: |
341 | up_write(&crypto_alg_sem); | |
342 | ||
343 | crypto_remove_final(&list); | |
cce9e06d | 344 | } |
73d3864a | 345 | EXPORT_SYMBOL_GPL(crypto_alg_tested); |
4cc7720c | 346 | |
22e5b20b | 347 | void crypto_remove_final(struct list_head *list) |
6bfd4809 HX |
348 | { |
349 | struct crypto_alg *alg; | |
350 | struct crypto_alg *n; | |
351 | ||
352 | list_for_each_entry_safe(alg, n, list, cra_list) { | |
353 | list_del_init(&alg->cra_list); | |
354 | crypto_alg_put(alg); | |
355 | } | |
356 | } | |
22e5b20b | 357 | EXPORT_SYMBOL_GPL(crypto_remove_final); |
6bfd4809 | 358 | |
73d3864a HX |
359 | static void crypto_wait_for_test(struct crypto_larval *larval) |
360 | { | |
361 | int err; | |
362 | ||
363 | err = crypto_probing_notify(CRYPTO_MSG_ALG_REGISTER, larval->adult); | |
364 | if (err != NOTIFY_STOP) { | |
365 | if (WARN_ON(err != NOTIFY_DONE)) | |
366 | goto out; | |
367 | crypto_alg_tested(larval->alg.cra_driver_name, 0); | |
368 | } | |
369 | ||
3fc89adb | 370 | err = wait_for_completion_killable(&larval->completion); |
73d3864a | 371 | WARN_ON(err); |
dd8b083f MP |
372 | if (!err) |
373 | crypto_probing_notify(CRYPTO_MSG_ALG_LOADED, larval); | |
73d3864a HX |
374 | |
375 | out: | |
376 | crypto_larval_kill(&larval->alg); | |
377 | } | |
378 | ||
4cc7720c HX |
379 | int crypto_register_alg(struct crypto_alg *alg) |
380 | { | |
73d3864a | 381 | struct crypto_larval *larval; |
4cc7720c HX |
382 | int err; |
383 | ||
d6040764 | 384 | alg->cra_flags &= ~CRYPTO_ALG_DEAD; |
4cc7720c HX |
385 | err = crypto_check_alg(alg); |
386 | if (err) | |
387 | return err; | |
388 | ||
389 | down_write(&crypto_alg_sem); | |
73d3864a | 390 | larval = __crypto_register_alg(alg); |
4cc7720c HX |
391 | up_write(&crypto_alg_sem); |
392 | ||
73d3864a HX |
393 | if (IS_ERR(larval)) |
394 | return PTR_ERR(larval); | |
395 | ||
396 | crypto_wait_for_test(larval); | |
397 | return 0; | |
4cc7720c | 398 | } |
cce9e06d HX |
399 | EXPORT_SYMBOL_GPL(crypto_register_alg); |
400 | ||
6bfd4809 HX |
401 | static int crypto_remove_alg(struct crypto_alg *alg, struct list_head *list) |
402 | { | |
403 | if (unlikely(list_empty(&alg->cra_list))) | |
404 | return -ENOENT; | |
405 | ||
406 | alg->cra_flags |= CRYPTO_ALG_DEAD; | |
407 | ||
6bfd4809 | 408 | list_del_init(&alg->cra_list); |
2bf29016 | 409 | crypto_remove_spawns(alg, list, NULL); |
6bfd4809 HX |
410 | |
411 | return 0; | |
412 | } | |
413 | ||
cce9e06d HX |
414 | int crypto_unregister_alg(struct crypto_alg *alg) |
415 | { | |
6bfd4809 HX |
416 | int ret; |
417 | LIST_HEAD(list); | |
5357c6c4 | 418 | |
cce9e06d | 419 | down_write(&crypto_alg_sem); |
6bfd4809 | 420 | ret = crypto_remove_alg(alg, &list); |
cce9e06d HX |
421 | up_write(&crypto_alg_sem); |
422 | ||
423 | if (ret) | |
424 | return ret; | |
425 | ||
ce8614a3 | 426 | BUG_ON(refcount_read(&alg->cra_refcnt) != 1); |
cce9e06d HX |
427 | if (alg->cra_destroy) |
428 | alg->cra_destroy(alg); | |
429 | ||
6bfd4809 | 430 | crypto_remove_final(&list); |
cce9e06d HX |
431 | return 0; |
432 | } | |
433 | EXPORT_SYMBOL_GPL(crypto_unregister_alg); | |
434 | ||
4b004346 MB |
435 | int crypto_register_algs(struct crypto_alg *algs, int count) |
436 | { | |
437 | int i, ret; | |
438 | ||
439 | for (i = 0; i < count; i++) { | |
440 | ret = crypto_register_alg(&algs[i]); | |
441 | if (ret) | |
442 | goto err; | |
443 | } | |
444 | ||
445 | return 0; | |
446 | ||
447 | err: | |
448 | for (--i; i >= 0; --i) | |
449 | crypto_unregister_alg(&algs[i]); | |
450 | ||
451 | return ret; | |
452 | } | |
453 | EXPORT_SYMBOL_GPL(crypto_register_algs); | |
454 | ||
455 | int crypto_unregister_algs(struct crypto_alg *algs, int count) | |
456 | { | |
457 | int i, ret; | |
458 | ||
459 | for (i = 0; i < count; i++) { | |
460 | ret = crypto_unregister_alg(&algs[i]); | |
461 | if (ret) | |
462 | pr_err("Failed to unregister %s %s: %d\n", | |
463 | algs[i].cra_driver_name, algs[i].cra_name, ret); | |
464 | } | |
465 | ||
466 | return 0; | |
467 | } | |
468 | EXPORT_SYMBOL_GPL(crypto_unregister_algs); | |
469 | ||
4cc7720c HX |
470 | int crypto_register_template(struct crypto_template *tmpl) |
471 | { | |
472 | struct crypto_template *q; | |
473 | int err = -EEXIST; | |
474 | ||
475 | down_write(&crypto_alg_sem); | |
476 | ||
002c77a4 JW |
477 | crypto_check_module_sig(tmpl->module); |
478 | ||
4cc7720c HX |
479 | list_for_each_entry(q, &crypto_template_list, list) { |
480 | if (q == tmpl) | |
481 | goto out; | |
482 | } | |
483 | ||
484 | list_add(&tmpl->list, &crypto_template_list); | |
485 | err = 0; | |
486 | out: | |
487 | up_write(&crypto_alg_sem); | |
488 | return err; | |
489 | } | |
490 | EXPORT_SYMBOL_GPL(crypto_register_template); | |
491 | ||
9572442d XW |
492 | int crypto_register_templates(struct crypto_template *tmpls, int count) |
493 | { | |
494 | int i, err; | |
495 | ||
496 | for (i = 0; i < count; i++) { | |
497 | err = crypto_register_template(&tmpls[i]); | |
498 | if (err) | |
499 | goto out; | |
500 | } | |
501 | return 0; | |
502 | ||
503 | out: | |
504 | for (--i; i >= 0; --i) | |
505 | crypto_unregister_template(&tmpls[i]); | |
506 | return err; | |
507 | } | |
508 | EXPORT_SYMBOL_GPL(crypto_register_templates); | |
509 | ||
4cc7720c HX |
510 | void crypto_unregister_template(struct crypto_template *tmpl) |
511 | { | |
512 | struct crypto_instance *inst; | |
b67bfe0d | 513 | struct hlist_node *n; |
4cc7720c | 514 | struct hlist_head *list; |
6bfd4809 | 515 | LIST_HEAD(users); |
4cc7720c HX |
516 | |
517 | down_write(&crypto_alg_sem); | |
518 | ||
519 | BUG_ON(list_empty(&tmpl->list)); | |
520 | list_del_init(&tmpl->list); | |
521 | ||
522 | list = &tmpl->instances; | |
b67bfe0d | 523 | hlist_for_each_entry(inst, list, list) { |
6bfd4809 | 524 | int err = crypto_remove_alg(&inst->alg, &users); |
0efcb8d5 | 525 | |
6bfd4809 | 526 | BUG_ON(err); |
4cc7720c HX |
527 | } |
528 | ||
529 | up_write(&crypto_alg_sem); | |
530 | ||
b67bfe0d | 531 | hlist_for_each_entry_safe(inst, n, list, list) { |
ce8614a3 | 532 | BUG_ON(refcount_read(&inst->alg.cra_refcnt) != 1); |
319382a6 | 533 | crypto_free_instance(inst); |
4cc7720c | 534 | } |
6bfd4809 | 535 | crypto_remove_final(&users); |
4cc7720c HX |
536 | } |
537 | EXPORT_SYMBOL_GPL(crypto_unregister_template); | |
538 | ||
9572442d XW |
539 | void crypto_unregister_templates(struct crypto_template *tmpls, int count) |
540 | { | |
541 | int i; | |
542 | ||
543 | for (i = count - 1; i >= 0; --i) | |
544 | crypto_unregister_template(&tmpls[i]); | |
545 | } | |
546 | EXPORT_SYMBOL_GPL(crypto_unregister_templates); | |
547 | ||
4cc7720c HX |
548 | static struct crypto_template *__crypto_lookup_template(const char *name) |
549 | { | |
550 | struct crypto_template *q, *tmpl = NULL; | |
551 | ||
552 | down_read(&crypto_alg_sem); | |
553 | list_for_each_entry(q, &crypto_template_list, list) { | |
554 | if (strcmp(q->name, name)) | |
555 | continue; | |
556 | if (unlikely(!crypto_tmpl_get(q))) | |
557 | continue; | |
558 | ||
559 | tmpl = q; | |
560 | break; | |
561 | } | |
562 | up_read(&crypto_alg_sem); | |
563 | ||
564 | return tmpl; | |
565 | } | |
566 | ||
567 | struct crypto_template *crypto_lookup_template(const char *name) | |
568 | { | |
4943ba16 KC |
569 | return try_then_request_module(__crypto_lookup_template(name), |
570 | "crypto-%s", name); | |
4cc7720c HX |
571 | } |
572 | EXPORT_SYMBOL_GPL(crypto_lookup_template); | |
573 | ||
574 | int crypto_register_instance(struct crypto_template *tmpl, | |
575 | struct crypto_instance *inst) | |
576 | { | |
73d3864a HX |
577 | struct crypto_larval *larval; |
578 | int err; | |
4cc7720c | 579 | |
4cc7720c HX |
580 | err = crypto_check_alg(&inst->alg); |
581 | if (err) | |
9c521a20 SM |
582 | return err; |
583 | ||
4cc7720c | 584 | inst->alg.cra_module = tmpl->module; |
64a947b1 | 585 | inst->alg.cra_flags |= CRYPTO_ALG_INSTANCE; |
4cc7720c HX |
586 | |
587 | down_write(&crypto_alg_sem); | |
588 | ||
73d3864a HX |
589 | larval = __crypto_register_alg(&inst->alg); |
590 | if (IS_ERR(larval)) | |
4cc7720c HX |
591 | goto unlock; |
592 | ||
593 | hlist_add_head(&inst->list, &tmpl->instances); | |
594 | inst->tmpl = tmpl; | |
595 | ||
596 | unlock: | |
597 | up_write(&crypto_alg_sem); | |
598 | ||
73d3864a HX |
599 | err = PTR_ERR(larval); |
600 | if (IS_ERR(larval)) | |
601 | goto err; | |
602 | ||
603 | crypto_wait_for_test(larval); | |
604 | err = 0; | |
6bfd4809 | 605 | |
4cc7720c HX |
606 | err: |
607 | return err; | |
608 | } | |
609 | EXPORT_SYMBOL_GPL(crypto_register_instance); | |
ce3fd840 | 610 | |
87b16756 | 611 | int crypto_unregister_instance(struct crypto_instance *inst) |
ce3fd840 | 612 | { |
1f723710 | 613 | LIST_HEAD(list); |
ce3fd840 | 614 | |
ce3fd840 SK |
615 | down_write(&crypto_alg_sem); |
616 | ||
87b16756 | 617 | crypto_remove_spawns(&inst->alg, &list, NULL); |
1f723710 | 618 | crypto_remove_instance(inst, &list); |
ce3fd840 SK |
619 | |
620 | up_write(&crypto_alg_sem); | |
621 | ||
1f723710 | 622 | crypto_remove_final(&list); |
ce3fd840 SK |
623 | |
624 | return 0; | |
625 | } | |
626 | EXPORT_SYMBOL_GPL(crypto_unregister_instance); | |
4cc7720c | 627 | |
6bfd4809 | 628 | int crypto_init_spawn(struct crypto_spawn *spawn, struct crypto_alg *alg, |
a73e6996 | 629 | struct crypto_instance *inst, u32 mask) |
6bfd4809 HX |
630 | { |
631 | int err = -EAGAIN; | |
632 | ||
6b476662 EB |
633 | if (WARN_ON_ONCE(inst == NULL)) |
634 | return -EINVAL; | |
635 | ||
6bfd4809 | 636 | spawn->inst = inst; |
a73e6996 | 637 | spawn->mask = mask; |
6bfd4809 HX |
638 | |
639 | down_write(&crypto_alg_sem); | |
640 | if (!crypto_is_moribund(alg)) { | |
641 | list_add(&spawn->list, &alg->cra_users); | |
642 | spawn->alg = alg; | |
643 | err = 0; | |
644 | } | |
645 | up_write(&crypto_alg_sem); | |
646 | ||
647 | return err; | |
648 | } | |
649 | EXPORT_SYMBOL_GPL(crypto_init_spawn); | |
650 | ||
97eedce1 HX |
651 | int crypto_init_spawn2(struct crypto_spawn *spawn, struct crypto_alg *alg, |
652 | struct crypto_instance *inst, | |
653 | const struct crypto_type *frontend) | |
654 | { | |
655 | int err = -EINVAL; | |
656 | ||
c614e109 | 657 | if ((alg->cra_flags ^ frontend->type) & frontend->maskset) |
97eedce1 HX |
658 | goto out; |
659 | ||
660 | spawn->frontend = frontend; | |
661 | err = crypto_init_spawn(spawn, alg, inst, frontend->maskset); | |
662 | ||
663 | out: | |
664 | return err; | |
665 | } | |
666 | EXPORT_SYMBOL_GPL(crypto_init_spawn2); | |
667 | ||
d6ef2f19 HX |
668 | int crypto_grab_spawn(struct crypto_spawn *spawn, const char *name, |
669 | u32 type, u32 mask) | |
670 | { | |
671 | struct crypto_alg *alg; | |
672 | int err; | |
673 | ||
674 | alg = crypto_find_alg(name, spawn->frontend, type, mask); | |
675 | if (IS_ERR(alg)) | |
676 | return PTR_ERR(alg); | |
677 | ||
678 | err = crypto_init_spawn(spawn, alg, spawn->inst, mask); | |
679 | crypto_mod_put(alg); | |
680 | return err; | |
681 | } | |
682 | EXPORT_SYMBOL_GPL(crypto_grab_spawn); | |
683 | ||
6bfd4809 HX |
684 | void crypto_drop_spawn(struct crypto_spawn *spawn) |
685 | { | |
7ede5a5b HX |
686 | if (!spawn->alg) |
687 | return; | |
688 | ||
6bfd4809 HX |
689 | down_write(&crypto_alg_sem); |
690 | list_del(&spawn->list); | |
691 | up_write(&crypto_alg_sem); | |
692 | } | |
693 | EXPORT_SYMBOL_GPL(crypto_drop_spawn); | |
694 | ||
97eedce1 | 695 | static struct crypto_alg *crypto_spawn_alg(struct crypto_spawn *spawn) |
6bfd4809 HX |
696 | { |
697 | struct crypto_alg *alg; | |
698 | struct crypto_alg *alg2; | |
6bfd4809 HX |
699 | |
700 | down_read(&crypto_alg_sem); | |
701 | alg = spawn->alg; | |
702 | alg2 = alg; | |
703 | if (alg2) | |
704 | alg2 = crypto_mod_get(alg2); | |
705 | up_read(&crypto_alg_sem); | |
706 | ||
707 | if (!alg2) { | |
708 | if (alg) | |
709 | crypto_shoot_alg(alg); | |
710 | return ERR_PTR(-EAGAIN); | |
711 | } | |
712 | ||
97eedce1 HX |
713 | return alg; |
714 | } | |
715 | ||
716 | struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn, u32 type, | |
717 | u32 mask) | |
718 | { | |
719 | struct crypto_alg *alg; | |
720 | struct crypto_tfm *tfm; | |
721 | ||
722 | alg = crypto_spawn_alg(spawn); | |
723 | if (IS_ERR(alg)) | |
724 | return ERR_CAST(alg); | |
725 | ||
2e306ee0 HX |
726 | tfm = ERR_PTR(-EINVAL); |
727 | if (unlikely((alg->cra_flags ^ type) & mask)) | |
728 | goto out_put_alg; | |
729 | ||
27d2a330 | 730 | tfm = __crypto_alloc_tfm(alg, type, mask); |
6bfd4809 | 731 | if (IS_ERR(tfm)) |
2e306ee0 HX |
732 | goto out_put_alg; |
733 | ||
734 | return tfm; | |
6bfd4809 | 735 | |
2e306ee0 HX |
736 | out_put_alg: |
737 | crypto_mod_put(alg); | |
6bfd4809 HX |
738 | return tfm; |
739 | } | |
740 | EXPORT_SYMBOL_GPL(crypto_spawn_tfm); | |
741 | ||
97eedce1 HX |
742 | void *crypto_spawn_tfm2(struct crypto_spawn *spawn) |
743 | { | |
744 | struct crypto_alg *alg; | |
745 | struct crypto_tfm *tfm; | |
746 | ||
747 | alg = crypto_spawn_alg(spawn); | |
748 | if (IS_ERR(alg)) | |
749 | return ERR_CAST(alg); | |
750 | ||
751 | tfm = crypto_create_tfm(alg, spawn->frontend); | |
752 | if (IS_ERR(tfm)) | |
753 | goto out_put_alg; | |
754 | ||
755 | return tfm; | |
756 | ||
757 | out_put_alg: | |
758 | crypto_mod_put(alg); | |
759 | return tfm; | |
760 | } | |
761 | EXPORT_SYMBOL_GPL(crypto_spawn_tfm2); | |
762 | ||
2825982d HX |
763 | int crypto_register_notifier(struct notifier_block *nb) |
764 | { | |
765 | return blocking_notifier_chain_register(&crypto_chain, nb); | |
766 | } | |
767 | EXPORT_SYMBOL_GPL(crypto_register_notifier); | |
768 | ||
769 | int crypto_unregister_notifier(struct notifier_block *nb) | |
770 | { | |
771 | return blocking_notifier_chain_unregister(&crypto_chain, nb); | |
772 | } | |
773 | EXPORT_SYMBOL_GPL(crypto_unregister_notifier); | |
774 | ||
ebc610e5 | 775 | struct crypto_attr_type *crypto_get_attr_type(struct rtattr **tb) |
7fed0bf2 | 776 | { |
39e1ee01 | 777 | struct rtattr *rta = tb[0]; |
ebc610e5 HX |
778 | struct crypto_attr_type *algt; |
779 | ||
780 | if (!rta) | |
781 | return ERR_PTR(-ENOENT); | |
782 | if (RTA_PAYLOAD(rta) < sizeof(*algt)) | |
783 | return ERR_PTR(-EINVAL); | |
39e1ee01 HX |
784 | if (rta->rta_type != CRYPTOA_TYPE) |
785 | return ERR_PTR(-EINVAL); | |
ebc610e5 HX |
786 | |
787 | algt = RTA_DATA(rta); | |
788 | ||
789 | return algt; | |
790 | } | |
791 | EXPORT_SYMBOL_GPL(crypto_get_attr_type); | |
792 | ||
793 | int crypto_check_attr_type(struct rtattr **tb, u32 type) | |
794 | { | |
795 | struct crypto_attr_type *algt; | |
796 | ||
797 | algt = crypto_get_attr_type(tb); | |
798 | if (IS_ERR(algt)) | |
799 | return PTR_ERR(algt); | |
800 | ||
801 | if ((algt->type ^ type) & algt->mask) | |
802 | return -EINVAL; | |
803 | ||
804 | return 0; | |
805 | } | |
806 | EXPORT_SYMBOL_GPL(crypto_check_attr_type); | |
807 | ||
68b6c7d6 | 808 | const char *crypto_attr_alg_name(struct rtattr *rta) |
ebc610e5 | 809 | { |
7fed0bf2 HX |
810 | struct crypto_attr_alg *alga; |
811 | ||
ebc610e5 HX |
812 | if (!rta) |
813 | return ERR_PTR(-ENOENT); | |
814 | if (RTA_PAYLOAD(rta) < sizeof(*alga)) | |
7fed0bf2 | 815 | return ERR_PTR(-EINVAL); |
39e1ee01 HX |
816 | if (rta->rta_type != CRYPTOA_ALG) |
817 | return ERR_PTR(-EINVAL); | |
7fed0bf2 HX |
818 | |
819 | alga = RTA_DATA(rta); | |
820 | alga->name[CRYPTO_MAX_ALG_NAME - 1] = 0; | |
821 | ||
68b6c7d6 HX |
822 | return alga->name; |
823 | } | |
824 | EXPORT_SYMBOL_GPL(crypto_attr_alg_name); | |
825 | ||
d06854f0 HX |
826 | struct crypto_alg *crypto_attr_alg2(struct rtattr *rta, |
827 | const struct crypto_type *frontend, | |
828 | u32 type, u32 mask) | |
68b6c7d6 HX |
829 | { |
830 | const char *name; | |
68b6c7d6 HX |
831 | |
832 | name = crypto_attr_alg_name(rta); | |
68b6c7d6 | 833 | if (IS_ERR(name)) |
3e8afe35 | 834 | return ERR_CAST(name); |
68b6c7d6 | 835 | |
d06854f0 | 836 | return crypto_find_alg(name, frontend, type, mask); |
7fed0bf2 | 837 | } |
d06854f0 | 838 | EXPORT_SYMBOL_GPL(crypto_attr_alg2); |
3c09f17c HX |
839 | |
840 | int crypto_attr_u32(struct rtattr *rta, u32 *num) | |
841 | { | |
842 | struct crypto_attr_u32 *nu32; | |
843 | ||
844 | if (!rta) | |
845 | return -ENOENT; | |
846 | if (RTA_PAYLOAD(rta) < sizeof(*nu32)) | |
847 | return -EINVAL; | |
848 | if (rta->rta_type != CRYPTOA_U32) | |
849 | return -EINVAL; | |
850 | ||
851 | nu32 = RTA_DATA(rta); | |
852 | *num = nu32->num; | |
853 | ||
854 | return 0; | |
855 | } | |
856 | EXPORT_SYMBOL_GPL(crypto_attr_u32); | |
7fed0bf2 | 857 | |
32f27c74 HX |
858 | int crypto_inst_setname(struct crypto_instance *inst, const char *name, |
859 | struct crypto_alg *alg) | |
860 | { | |
861 | if (snprintf(inst->alg.cra_name, CRYPTO_MAX_ALG_NAME, "%s(%s)", name, | |
862 | alg->cra_name) >= CRYPTO_MAX_ALG_NAME) | |
863 | return -ENAMETOOLONG; | |
864 | ||
865 | if (snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s(%s)", | |
866 | name, alg->cra_driver_name) >= CRYPTO_MAX_ALG_NAME) | |
867 | return -ENAMETOOLONG; | |
868 | ||
869 | return 0; | |
870 | } | |
871 | EXPORT_SYMBOL_GPL(crypto_inst_setname); | |
872 | ||
14aa1a83 EB |
873 | void *crypto_alloc_instance(const char *name, struct crypto_alg *alg, |
874 | unsigned int head) | |
7fed0bf2 HX |
875 | { |
876 | struct crypto_instance *inst; | |
70ec7bb9 | 877 | char *p; |
7fed0bf2 HX |
878 | int err; |
879 | ||
70ec7bb9 HX |
880 | p = kzalloc(head + sizeof(*inst) + sizeof(struct crypto_spawn), |
881 | GFP_KERNEL); | |
882 | if (!p) | |
7fed0bf2 HX |
883 | return ERR_PTR(-ENOMEM); |
884 | ||
70ec7bb9 HX |
885 | inst = (void *)(p + head); |
886 | ||
32f27c74 HX |
887 | err = crypto_inst_setname(inst, name, alg); |
888 | if (err) | |
7fed0bf2 HX |
889 | goto err_free_inst; |
890 | ||
70ec7bb9 HX |
891 | return p; |
892 | ||
893 | err_free_inst: | |
894 | kfree(p); | |
895 | return ERR_PTR(err); | |
896 | } | |
7fed0bf2 HX |
897 | EXPORT_SYMBOL_GPL(crypto_alloc_instance); |
898 | ||
b5b7f088 HX |
899 | void crypto_init_queue(struct crypto_queue *queue, unsigned int max_qlen) |
900 | { | |
901 | INIT_LIST_HEAD(&queue->list); | |
902 | queue->backlog = &queue->list; | |
903 | queue->qlen = 0; | |
904 | queue->max_qlen = max_qlen; | |
905 | } | |
906 | EXPORT_SYMBOL_GPL(crypto_init_queue); | |
907 | ||
908 | int crypto_enqueue_request(struct crypto_queue *queue, | |
909 | struct crypto_async_request *request) | |
910 | { | |
911 | int err = -EINPROGRESS; | |
912 | ||
913 | if (unlikely(queue->qlen >= queue->max_qlen)) { | |
6b80ea38 GBY |
914 | if (!(request->flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) { |
915 | err = -ENOSPC; | |
b5b7f088 | 916 | goto out; |
6b80ea38 GBY |
917 | } |
918 | err = -EBUSY; | |
b5b7f088 HX |
919 | if (queue->backlog == &queue->list) |
920 | queue->backlog = &request->list; | |
921 | } | |
922 | ||
923 | queue->qlen++; | |
924 | list_add_tail(&request->list, &queue->list); | |
925 | ||
926 | out: | |
927 | return err; | |
928 | } | |
929 | EXPORT_SYMBOL_GPL(crypto_enqueue_request); | |
930 | ||
31d228cc | 931 | struct crypto_async_request *crypto_dequeue_request(struct crypto_queue *queue) |
b5b7f088 HX |
932 | { |
933 | struct list_head *request; | |
934 | ||
935 | if (unlikely(!queue->qlen)) | |
936 | return NULL; | |
937 | ||
938 | queue->qlen--; | |
939 | ||
940 | if (queue->backlog != &queue->list) | |
941 | queue->backlog = queue->backlog->next; | |
942 | ||
943 | request = queue->list.next; | |
944 | list_del(request); | |
945 | ||
31d228cc | 946 | return list_entry(request, struct crypto_async_request, list); |
b5b7f088 HX |
947 | } |
948 | EXPORT_SYMBOL_GPL(crypto_dequeue_request); | |
949 | ||
950 | int crypto_tfm_in_queue(struct crypto_queue *queue, struct crypto_tfm *tfm) | |
951 | { | |
952 | struct crypto_async_request *req; | |
953 | ||
954 | list_for_each_entry(req, &queue->list, list) { | |
955 | if (req->tfm == tfm) | |
956 | return 1; | |
957 | } | |
958 | ||
959 | return 0; | |
960 | } | |
961 | EXPORT_SYMBOL_GPL(crypto_tfm_in_queue); | |
962 | ||
7613636d HX |
963 | static inline void crypto_inc_byte(u8 *a, unsigned int size) |
964 | { | |
965 | u8 *b = (a + size); | |
966 | u8 c; | |
967 | ||
968 | for (; size; size--) { | |
969 | c = *--b + 1; | |
970 | *b = c; | |
971 | if (c) | |
972 | break; | |
973 | } | |
974 | } | |
975 | ||
976 | void crypto_inc(u8 *a, unsigned int size) | |
977 | { | |
978 | __be32 *b = (__be32 *)(a + size); | |
979 | u32 c; | |
980 | ||
db91af0f | 981 | if (IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) || |
27c539ae | 982 | IS_ALIGNED((unsigned long)b, __alignof__(*b))) |
db91af0f AB |
983 | for (; size >= 4; size -= 4) { |
984 | c = be32_to_cpu(*--b) + 1; | |
985 | *b = cpu_to_be32(c); | |
27c539ae | 986 | if (likely(c)) |
db91af0f AB |
987 | return; |
988 | } | |
7613636d HX |
989 | |
990 | crypto_inc_byte(a, size); | |
991 | } | |
992 | EXPORT_SYMBOL_GPL(crypto_inc); | |
993 | ||
a7c391f0 | 994 | void __crypto_xor(u8 *dst, const u8 *src1, const u8 *src2, unsigned int len) |
7613636d | 995 | { |
db91af0f AB |
996 | int relalign = 0; |
997 | ||
998 | if (!IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)) { | |
999 | int size = sizeof(unsigned long); | |
a7c391f0 AB |
1000 | int d = (((unsigned long)dst ^ (unsigned long)src1) | |
1001 | ((unsigned long)dst ^ (unsigned long)src2)) & | |
1002 | (size - 1); | |
db91af0f AB |
1003 | |
1004 | relalign = d ? 1 << __ffs(d) : size; | |
1005 | ||
1006 | /* | |
1007 | * If we care about alignment, process as many bytes as | |
1008 | * needed to advance dst and src to values whose alignments | |
1009 | * equal their relative alignment. This will allow us to | |
1010 | * process the remainder of the input using optimal strides. | |
1011 | */ | |
1012 | while (((unsigned long)dst & (relalign - 1)) && len > 0) { | |
a7c391f0 | 1013 | *dst++ = *src1++ ^ *src2++; |
db91af0f AB |
1014 | len--; |
1015 | } | |
1016 | } | |
7613636d | 1017 | |
db91af0f | 1018 | while (IS_ENABLED(CONFIG_64BIT) && len >= 8 && !(relalign & 7)) { |
a7c391f0 | 1019 | *(u64 *)dst = *(u64 *)src1 ^ *(u64 *)src2; |
db91af0f | 1020 | dst += 8; |
a7c391f0 AB |
1021 | src1 += 8; |
1022 | src2 += 8; | |
db91af0f AB |
1023 | len -= 8; |
1024 | } | |
7613636d | 1025 | |
db91af0f | 1026 | while (len >= 4 && !(relalign & 3)) { |
a7c391f0 | 1027 | *(u32 *)dst = *(u32 *)src1 ^ *(u32 *)src2; |
db91af0f | 1028 | dst += 4; |
a7c391f0 AB |
1029 | src1 += 4; |
1030 | src2 += 4; | |
db91af0f AB |
1031 | len -= 4; |
1032 | } | |
1033 | ||
1034 | while (len >= 2 && !(relalign & 1)) { | |
a7c391f0 | 1035 | *(u16 *)dst = *(u16 *)src1 ^ *(u16 *)src2; |
db91af0f | 1036 | dst += 2; |
a7c391f0 AB |
1037 | src1 += 2; |
1038 | src2 += 2; | |
db91af0f AB |
1039 | len -= 2; |
1040 | } | |
7613636d | 1041 | |
db91af0f | 1042 | while (len--) |
a7c391f0 | 1043 | *dst++ = *src1++ ^ *src2++; |
7613636d | 1044 | } |
db91af0f | 1045 | EXPORT_SYMBOL_GPL(__crypto_xor); |
7613636d | 1046 | |
38d21433 HX |
1047 | unsigned int crypto_alg_extsize(struct crypto_alg *alg) |
1048 | { | |
c2110f28 HX |
1049 | return alg->cra_ctxsize + |
1050 | (alg->cra_alignmask & ~(crypto_tfm_ctx_alignment() - 1)); | |
38d21433 HX |
1051 | } |
1052 | EXPORT_SYMBOL_GPL(crypto_alg_extsize); | |
1053 | ||
f2aefdab HX |
1054 | int crypto_type_has_alg(const char *name, const struct crypto_type *frontend, |
1055 | u32 type, u32 mask) | |
1056 | { | |
1057 | int ret = 0; | |
1058 | struct crypto_alg *alg = crypto_find_alg(name, frontend, type, mask); | |
1059 | ||
1060 | if (!IS_ERR(alg)) { | |
1061 | crypto_mod_put(alg); | |
1062 | ret = 1; | |
1063 | } | |
1064 | ||
1065 | return ret; | |
1066 | } | |
1067 | EXPORT_SYMBOL_GPL(crypto_type_has_alg); | |
1068 | ||
f7d76e05 | 1069 | #ifdef CONFIG_CRYPTO_STATS |
1f6669b9 CL |
1070 | void crypto_stats_init(struct crypto_alg *alg) |
1071 | { | |
1072 | memset(&alg->stats, 0, sizeof(alg->stats)); | |
1073 | } | |
1074 | EXPORT_SYMBOL_GPL(crypto_stats_init); | |
1075 | ||
f7d76e05 CL |
1076 | void crypto_stats_get(struct crypto_alg *alg) |
1077 | { | |
1078 | crypto_alg_get(alg); | |
1079 | } | |
1080 | EXPORT_SYMBOL_GPL(crypto_stats_get); | |
1081 | ||
1082 | void crypto_stats_ablkcipher_encrypt(unsigned int nbytes, int ret, | |
1083 | struct crypto_alg *alg) | |
1084 | { | |
1085 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1086 | atomic64_inc(&alg->stats.cipher.err_cnt); |
f7d76e05 | 1087 | } else { |
17c18f9e CL |
1088 | atomic64_inc(&alg->stats.cipher.encrypt_cnt); |
1089 | atomic64_add(nbytes, &alg->stats.cipher.encrypt_tlen); | |
f7d76e05 CL |
1090 | } |
1091 | crypto_alg_put(alg); | |
1092 | } | |
1093 | EXPORT_SYMBOL_GPL(crypto_stats_ablkcipher_encrypt); | |
1094 | ||
1095 | void crypto_stats_ablkcipher_decrypt(unsigned int nbytes, int ret, | |
1096 | struct crypto_alg *alg) | |
1097 | { | |
1098 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1099 | atomic64_inc(&alg->stats.cipher.err_cnt); |
f7d76e05 | 1100 | } else { |
17c18f9e CL |
1101 | atomic64_inc(&alg->stats.cipher.decrypt_cnt); |
1102 | atomic64_add(nbytes, &alg->stats.cipher.decrypt_tlen); | |
f7d76e05 CL |
1103 | } |
1104 | crypto_alg_put(alg); | |
1105 | } | |
1106 | EXPORT_SYMBOL_GPL(crypto_stats_ablkcipher_decrypt); | |
1107 | ||
1108 | void crypto_stats_aead_encrypt(unsigned int cryptlen, struct crypto_alg *alg, | |
1109 | int ret) | |
1110 | { | |
1111 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1112 | atomic64_inc(&alg->stats.aead.err_cnt); |
f7d76e05 | 1113 | } else { |
17c18f9e CL |
1114 | atomic64_inc(&alg->stats.aead.encrypt_cnt); |
1115 | atomic64_add(cryptlen, &alg->stats.aead.encrypt_tlen); | |
f7d76e05 CL |
1116 | } |
1117 | crypto_alg_put(alg); | |
1118 | } | |
1119 | EXPORT_SYMBOL_GPL(crypto_stats_aead_encrypt); | |
1120 | ||
1121 | void crypto_stats_aead_decrypt(unsigned int cryptlen, struct crypto_alg *alg, | |
1122 | int ret) | |
1123 | { | |
1124 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1125 | atomic64_inc(&alg->stats.aead.err_cnt); |
f7d76e05 | 1126 | } else { |
17c18f9e CL |
1127 | atomic64_inc(&alg->stats.aead.decrypt_cnt); |
1128 | atomic64_add(cryptlen, &alg->stats.aead.decrypt_tlen); | |
f7d76e05 CL |
1129 | } |
1130 | crypto_alg_put(alg); | |
1131 | } | |
1132 | EXPORT_SYMBOL_GPL(crypto_stats_aead_decrypt); | |
1133 | ||
1134 | void crypto_stats_akcipher_encrypt(unsigned int src_len, int ret, | |
1135 | struct crypto_alg *alg) | |
1136 | { | |
1137 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1138 | atomic64_inc(&alg->stats.akcipher.err_cnt); |
f7d76e05 | 1139 | } else { |
17c18f9e CL |
1140 | atomic64_inc(&alg->stats.akcipher.encrypt_cnt); |
1141 | atomic64_add(src_len, &alg->stats.akcipher.encrypt_tlen); | |
f7d76e05 CL |
1142 | } |
1143 | crypto_alg_put(alg); | |
1144 | } | |
1145 | EXPORT_SYMBOL_GPL(crypto_stats_akcipher_encrypt); | |
1146 | ||
1147 | void crypto_stats_akcipher_decrypt(unsigned int src_len, int ret, | |
1148 | struct crypto_alg *alg) | |
1149 | { | |
1150 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1151 | atomic64_inc(&alg->stats.akcipher.err_cnt); |
f7d76e05 | 1152 | } else { |
17c18f9e CL |
1153 | atomic64_inc(&alg->stats.akcipher.decrypt_cnt); |
1154 | atomic64_add(src_len, &alg->stats.akcipher.decrypt_tlen); | |
f7d76e05 CL |
1155 | } |
1156 | crypto_alg_put(alg); | |
1157 | } | |
1158 | EXPORT_SYMBOL_GPL(crypto_stats_akcipher_decrypt); | |
1159 | ||
1160 | void crypto_stats_akcipher_sign(int ret, struct crypto_alg *alg) | |
1161 | { | |
1162 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) | |
44f13133 | 1163 | atomic64_inc(&alg->stats.akcipher.err_cnt); |
f7d76e05 | 1164 | else |
17c18f9e | 1165 | atomic64_inc(&alg->stats.akcipher.sign_cnt); |
f7d76e05 CL |
1166 | crypto_alg_put(alg); |
1167 | } | |
1168 | EXPORT_SYMBOL_GPL(crypto_stats_akcipher_sign); | |
1169 | ||
1170 | void crypto_stats_akcipher_verify(int ret, struct crypto_alg *alg) | |
1171 | { | |
1172 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) | |
44f13133 | 1173 | atomic64_inc(&alg->stats.akcipher.err_cnt); |
f7d76e05 | 1174 | else |
17c18f9e | 1175 | atomic64_inc(&alg->stats.akcipher.verify_cnt); |
f7d76e05 CL |
1176 | crypto_alg_put(alg); |
1177 | } | |
1178 | EXPORT_SYMBOL_GPL(crypto_stats_akcipher_verify); | |
1179 | ||
1180 | void crypto_stats_compress(unsigned int slen, int ret, struct crypto_alg *alg) | |
1181 | { | |
1182 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1183 | atomic64_inc(&alg->stats.compress.err_cnt); |
f7d76e05 | 1184 | } else { |
17c18f9e CL |
1185 | atomic64_inc(&alg->stats.compress.compress_cnt); |
1186 | atomic64_add(slen, &alg->stats.compress.compress_tlen); | |
f7d76e05 CL |
1187 | } |
1188 | crypto_alg_put(alg); | |
1189 | } | |
1190 | EXPORT_SYMBOL_GPL(crypto_stats_compress); | |
1191 | ||
1192 | void crypto_stats_decompress(unsigned int slen, int ret, struct crypto_alg *alg) | |
1193 | { | |
1194 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1195 | atomic64_inc(&alg->stats.compress.err_cnt); |
f7d76e05 | 1196 | } else { |
17c18f9e CL |
1197 | atomic64_inc(&alg->stats.compress.decompress_cnt); |
1198 | atomic64_add(slen, &alg->stats.compress.decompress_tlen); | |
f7d76e05 CL |
1199 | } |
1200 | crypto_alg_put(alg); | |
1201 | } | |
1202 | EXPORT_SYMBOL_GPL(crypto_stats_decompress); | |
1203 | ||
1204 | void crypto_stats_ahash_update(unsigned int nbytes, int ret, | |
1205 | struct crypto_alg *alg) | |
1206 | { | |
1207 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) | |
44f13133 | 1208 | atomic64_inc(&alg->stats.hash.err_cnt); |
f7d76e05 | 1209 | else |
17c18f9e | 1210 | atomic64_add(nbytes, &alg->stats.hash.hash_tlen); |
f7d76e05 CL |
1211 | crypto_alg_put(alg); |
1212 | } | |
1213 | EXPORT_SYMBOL_GPL(crypto_stats_ahash_update); | |
1214 | ||
1215 | void crypto_stats_ahash_final(unsigned int nbytes, int ret, | |
1216 | struct crypto_alg *alg) | |
1217 | { | |
1218 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1219 | atomic64_inc(&alg->stats.hash.err_cnt); |
f7d76e05 | 1220 | } else { |
17c18f9e CL |
1221 | atomic64_inc(&alg->stats.hash.hash_cnt); |
1222 | atomic64_add(nbytes, &alg->stats.hash.hash_tlen); | |
f7d76e05 CL |
1223 | } |
1224 | crypto_alg_put(alg); | |
1225 | } | |
1226 | EXPORT_SYMBOL_GPL(crypto_stats_ahash_final); | |
1227 | ||
1228 | void crypto_stats_kpp_set_secret(struct crypto_alg *alg, int ret) | |
1229 | { | |
1230 | if (ret) | |
44f13133 | 1231 | atomic64_inc(&alg->stats.kpp.err_cnt); |
f7d76e05 | 1232 | else |
17c18f9e | 1233 | atomic64_inc(&alg->stats.kpp.setsecret_cnt); |
f7d76e05 CL |
1234 | crypto_alg_put(alg); |
1235 | } | |
1236 | EXPORT_SYMBOL_GPL(crypto_stats_kpp_set_secret); | |
1237 | ||
1238 | void crypto_stats_kpp_generate_public_key(struct crypto_alg *alg, int ret) | |
1239 | { | |
1240 | if (ret) | |
44f13133 | 1241 | atomic64_inc(&alg->stats.kpp.err_cnt); |
f7d76e05 | 1242 | else |
17c18f9e | 1243 | atomic64_inc(&alg->stats.kpp.generate_public_key_cnt); |
f7d76e05 CL |
1244 | crypto_alg_put(alg); |
1245 | } | |
1246 | EXPORT_SYMBOL_GPL(crypto_stats_kpp_generate_public_key); | |
1247 | ||
1248 | void crypto_stats_kpp_compute_shared_secret(struct crypto_alg *alg, int ret) | |
1249 | { | |
1250 | if (ret) | |
44f13133 | 1251 | atomic64_inc(&alg->stats.kpp.err_cnt); |
f7d76e05 | 1252 | else |
17c18f9e | 1253 | atomic64_inc(&alg->stats.kpp.compute_shared_secret_cnt); |
f7d76e05 CL |
1254 | crypto_alg_put(alg); |
1255 | } | |
1256 | EXPORT_SYMBOL_GPL(crypto_stats_kpp_compute_shared_secret); | |
1257 | ||
1258 | void crypto_stats_rng_seed(struct crypto_alg *alg, int ret) | |
1259 | { | |
1260 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) | |
44f13133 | 1261 | atomic64_inc(&alg->stats.rng.err_cnt); |
f7d76e05 | 1262 | else |
17c18f9e | 1263 | atomic64_inc(&alg->stats.rng.seed_cnt); |
f7d76e05 CL |
1264 | crypto_alg_put(alg); |
1265 | } | |
1266 | EXPORT_SYMBOL_GPL(crypto_stats_rng_seed); | |
1267 | ||
1268 | void crypto_stats_rng_generate(struct crypto_alg *alg, unsigned int dlen, | |
1269 | int ret) | |
1270 | { | |
1271 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1272 | atomic64_inc(&alg->stats.rng.err_cnt); |
f7d76e05 | 1273 | } else { |
17c18f9e CL |
1274 | atomic64_inc(&alg->stats.rng.generate_cnt); |
1275 | atomic64_add(dlen, &alg->stats.rng.generate_tlen); | |
f7d76e05 CL |
1276 | } |
1277 | crypto_alg_put(alg); | |
1278 | } | |
1279 | EXPORT_SYMBOL_GPL(crypto_stats_rng_generate); | |
1280 | ||
1281 | void crypto_stats_skcipher_encrypt(unsigned int cryptlen, int ret, | |
1282 | struct crypto_alg *alg) | |
1283 | { | |
1284 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1285 | atomic64_inc(&alg->stats.cipher.err_cnt); |
f7d76e05 | 1286 | } else { |
17c18f9e CL |
1287 | atomic64_inc(&alg->stats.cipher.encrypt_cnt); |
1288 | atomic64_add(cryptlen, &alg->stats.cipher.encrypt_tlen); | |
f7d76e05 CL |
1289 | } |
1290 | crypto_alg_put(alg); | |
1291 | } | |
1292 | EXPORT_SYMBOL_GPL(crypto_stats_skcipher_encrypt); | |
1293 | ||
1294 | void crypto_stats_skcipher_decrypt(unsigned int cryptlen, int ret, | |
1295 | struct crypto_alg *alg) | |
1296 | { | |
1297 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1298 | atomic64_inc(&alg->stats.cipher.err_cnt); |
f7d76e05 | 1299 | } else { |
17c18f9e CL |
1300 | atomic64_inc(&alg->stats.cipher.decrypt_cnt); |
1301 | atomic64_add(cryptlen, &alg->stats.cipher.decrypt_tlen); | |
f7d76e05 CL |
1302 | } |
1303 | crypto_alg_put(alg); | |
1304 | } | |
1305 | EXPORT_SYMBOL_GPL(crypto_stats_skcipher_decrypt); | |
1306 | #endif | |
1307 | ||
cce9e06d HX |
1308 | static int __init crypto_algapi_init(void) |
1309 | { | |
1310 | crypto_init_proc(); | |
1311 | return 0; | |
1312 | } | |
1313 | ||
1314 | static void __exit crypto_algapi_exit(void) | |
1315 | { | |
1316 | crypto_exit_proc(); | |
1317 | } | |
1318 | ||
1319 | module_init(crypto_algapi_init); | |
1320 | module_exit(crypto_algapi_exit); | |
1321 | ||
1322 | MODULE_LICENSE("GPL"); | |
1323 | MODULE_DESCRIPTION("Cryptographic algorithms API"); |