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Commit | Line | Data |
---|---|---|
cce9e06d HX |
1 | /* |
2 | * Cryptographic API for algorithms (i.e., low-level API). | |
3 | * | |
4 | * Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the Free | |
8 | * Software Foundation; either version 2 of the License, or (at your option) | |
9 | * any later version. | |
10 | * | |
11 | */ | |
12 | ||
13c935bb | 13 | #include <crypto/algapi.h> |
6bfd4809 | 14 | #include <linux/err.h> |
cce9e06d | 15 | #include <linux/errno.h> |
3133d76f | 16 | #include <linux/fips.h> |
cce9e06d HX |
17 | #include <linux/init.h> |
18 | #include <linux/kernel.h> | |
4cc7720c | 19 | #include <linux/list.h> |
cce9e06d | 20 | #include <linux/module.h> |
7fed0bf2 | 21 | #include <linux/rtnetlink.h> |
5a0e3ad6 | 22 | #include <linux/slab.h> |
cce9e06d HX |
23 | #include <linux/string.h> |
24 | ||
25 | #include "internal.h" | |
26 | ||
4cc7720c HX |
27 | static LIST_HEAD(crypto_template_list); |
28 | ||
cce9e06d HX |
29 | static inline int crypto_set_driver_name(struct crypto_alg *alg) |
30 | { | |
31 | static const char suffix[] = "-generic"; | |
32 | char *driver_name = alg->cra_driver_name; | |
33 | int len; | |
34 | ||
35 | if (*driver_name) | |
36 | return 0; | |
37 | ||
38 | len = strlcpy(driver_name, alg->cra_name, CRYPTO_MAX_ALG_NAME); | |
39 | if (len + sizeof(suffix) > CRYPTO_MAX_ALG_NAME) | |
40 | return -ENAMETOOLONG; | |
41 | ||
42 | memcpy(driver_name + len, suffix, sizeof(suffix)); | |
43 | return 0; | |
44 | } | |
45 | ||
002c77a4 JW |
46 | static inline void crypto_check_module_sig(struct module *mod) |
47 | { | |
59afdc7b | 48 | if (fips_enabled && mod && !module_sig_ok(mod)) |
002c77a4 | 49 | panic("Module %s signature verification failed in FIPS mode\n", |
bd4a7c69 | 50 | module_name(mod)); |
002c77a4 JW |
51 | } |
52 | ||
4cc7720c | 53 | static int crypto_check_alg(struct crypto_alg *alg) |
cce9e06d | 54 | { |
002c77a4 JW |
55 | crypto_check_module_sig(alg->cra_module); |
56 | ||
cce9e06d HX |
57 | if (alg->cra_alignmask & (alg->cra_alignmask + 1)) |
58 | return -EINVAL; | |
59 | ||
a9f7f88a KC |
60 | /* General maximums for all algs. */ |
61 | if (alg->cra_alignmask > MAX_ALGAPI_ALIGNMASK) | |
cce9e06d HX |
62 | return -EINVAL; |
63 | ||
a9f7f88a KC |
64 | if (alg->cra_blocksize > MAX_ALGAPI_BLOCKSIZE) |
65 | return -EINVAL; | |
66 | ||
67 | /* Lower maximums for specific alg types. */ | |
13c935bb SM |
68 | if (!alg->cra_type && (alg->cra_flags & CRYPTO_ALG_TYPE_MASK) == |
69 | CRYPTO_ALG_TYPE_CIPHER) { | |
70 | if (alg->cra_alignmask > MAX_CIPHER_ALIGNMASK) | |
71 | return -EINVAL; | |
72 | ||
73 | if (alg->cra_blocksize > MAX_CIPHER_BLOCKSIZE) | |
74 | return -EINVAL; | |
75 | } | |
76 | ||
cce9e06d HX |
77 | if (alg->cra_priority < 0) |
78 | return -EINVAL; | |
cce9e06d | 79 | |
ce8614a3 | 80 | refcount_set(&alg->cra_refcnt, 1); |
e9b8e5be | 81 | |
4cc7720c HX |
82 | return crypto_set_driver_name(alg); |
83 | } | |
84 | ||
319382a6 HX |
85 | static void crypto_free_instance(struct crypto_instance *inst) |
86 | { | |
87 | if (!inst->alg.cra_type->free) { | |
88 | inst->tmpl->free(inst); | |
89 | return; | |
90 | } | |
91 | ||
92 | inst->alg.cra_type->free(inst); | |
93 | } | |
94 | ||
6bfd4809 HX |
95 | static void crypto_destroy_instance(struct crypto_alg *alg) |
96 | { | |
97 | struct crypto_instance *inst = (void *)alg; | |
98 | struct crypto_template *tmpl = inst->tmpl; | |
99 | ||
319382a6 | 100 | crypto_free_instance(inst); |
6bfd4809 HX |
101 | crypto_tmpl_put(tmpl); |
102 | } | |
103 | ||
2bf29016 HX |
104 | static struct list_head *crypto_more_spawns(struct crypto_alg *alg, |
105 | struct list_head *stack, | |
106 | struct list_head *top, | |
107 | struct list_head *secondary_spawns) | |
108 | { | |
109 | struct crypto_spawn *spawn, *n; | |
110 | ||
304e4818 GT |
111 | spawn = list_first_entry_or_null(stack, struct crypto_spawn, list); |
112 | if (!spawn) | |
2bf29016 HX |
113 | return NULL; |
114 | ||
304e4818 | 115 | n = list_next_entry(spawn, list); |
2bf29016 HX |
116 | |
117 | if (spawn->alg && &n->list != stack && !n->alg) | |
118 | n->alg = (n->list.next == stack) ? alg : | |
304e4818 | 119 | &list_next_entry(n, list)->inst->alg; |
2bf29016 HX |
120 | |
121 | list_move(&spawn->list, secondary_spawns); | |
122 | ||
123 | return &n->list == stack ? top : &n->inst->alg.cra_users; | |
124 | } | |
125 | ||
1f723710 HX |
126 | static void crypto_remove_instance(struct crypto_instance *inst, |
127 | struct list_head *list) | |
6bfd4809 | 128 | { |
a73e6996 | 129 | struct crypto_template *tmpl = inst->tmpl; |
6bfd4809 | 130 | |
a73e6996 HX |
131 | if (crypto_is_dead(&inst->alg)) |
132 | return; | |
6bfd4809 | 133 | |
a73e6996 | 134 | inst->alg.cra_flags |= CRYPTO_ALG_DEAD; |
38cb2419 HX |
135 | if (hlist_unhashed(&inst->list)) |
136 | return; | |
137 | ||
a73e6996 HX |
138 | if (!tmpl || !crypto_tmpl_get(tmpl)) |
139 | return; | |
140 | ||
a73e6996 HX |
141 | list_move(&inst->alg.cra_list, list); |
142 | hlist_del(&inst->list); | |
143 | inst->alg.cra_destroy = crypto_destroy_instance; | |
144 | ||
2bf29016 | 145 | BUG_ON(!list_empty(&inst->alg.cra_users)); |
a73e6996 HX |
146 | } |
147 | ||
89b596ba SK |
148 | void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list, |
149 | struct crypto_alg *nalg) | |
a73e6996 | 150 | { |
2bf29016 | 151 | u32 new_type = (nalg ?: alg)->cra_flags; |
a73e6996 HX |
152 | struct crypto_spawn *spawn, *n; |
153 | LIST_HEAD(secondary_spawns); | |
2bf29016 HX |
154 | struct list_head *spawns; |
155 | LIST_HEAD(stack); | |
156 | LIST_HEAD(top); | |
6bfd4809 | 157 | |
2bf29016 | 158 | spawns = &alg->cra_users; |
a73e6996 HX |
159 | list_for_each_entry_safe(spawn, n, spawns, list) { |
160 | if ((spawn->alg->cra_flags ^ new_type) & spawn->mask) | |
6bfd4809 HX |
161 | continue; |
162 | ||
2bf29016 | 163 | list_move(&spawn->list, &top); |
a73e6996 | 164 | } |
6bfd4809 | 165 | |
2bf29016 HX |
166 | spawns = ⊤ |
167 | do { | |
168 | while (!list_empty(spawns)) { | |
169 | struct crypto_instance *inst; | |
170 | ||
171 | spawn = list_first_entry(spawns, struct crypto_spawn, | |
172 | list); | |
173 | inst = spawn->inst; | |
174 | ||
175 | BUG_ON(&inst->alg == alg); | |
176 | ||
177 | list_move(&spawn->list, &stack); | |
178 | ||
179 | if (&inst->alg == nalg) | |
180 | break; | |
181 | ||
182 | spawn->alg = NULL; | |
183 | spawns = &inst->alg.cra_users; | |
9a006742 EB |
184 | |
185 | /* | |
186 | * We may encounter an unregistered instance here, since | |
187 | * an instance's spawns are set up prior to the instance | |
188 | * being registered. An unregistered instance will have | |
189 | * NULL ->cra_users.next, since ->cra_users isn't | |
190 | * properly initialized until registration. But an | |
191 | * unregistered instance cannot have any users, so treat | |
192 | * it the same as ->cra_users being empty. | |
193 | */ | |
194 | if (spawns->next == NULL) | |
195 | break; | |
2bf29016 HX |
196 | } |
197 | } while ((spawns = crypto_more_spawns(alg, &stack, &top, | |
198 | &secondary_spawns))); | |
199 | ||
200 | list_for_each_entry_safe(spawn, n, &secondary_spawns, list) { | |
201 | if (spawn->alg) | |
202 | list_move(&spawn->list, &spawn->alg->cra_users); | |
203 | else | |
1f723710 | 204 | crypto_remove_instance(spawn->inst, list); |
6bfd4809 HX |
205 | } |
206 | } | |
89b596ba | 207 | EXPORT_SYMBOL_GPL(crypto_remove_spawns); |
6bfd4809 | 208 | |
73d3864a | 209 | static struct crypto_larval *__crypto_register_alg(struct crypto_alg *alg) |
4cc7720c HX |
210 | { |
211 | struct crypto_alg *q; | |
73d3864a | 212 | struct crypto_larval *larval; |
6bfd4809 HX |
213 | int ret = -EAGAIN; |
214 | ||
215 | if (crypto_is_dead(alg)) | |
73d3864a | 216 | goto err; |
6bfd4809 HX |
217 | |
218 | INIT_LIST_HEAD(&alg->cra_users); | |
219 | ||
73d3864a HX |
220 | /* No cheating! */ |
221 | alg->cra_flags &= ~CRYPTO_ALG_TESTED; | |
222 | ||
6bfd4809 | 223 | ret = -EEXIST; |
4cc7720c | 224 | |
cce9e06d | 225 | list_for_each_entry(q, &crypto_alg_list, cra_list) { |
4cc7720c | 226 | if (q == alg) |
73d3864a HX |
227 | goto err; |
228 | ||
b8e15992 HX |
229 | if (crypto_is_moribund(q)) |
230 | continue; | |
231 | ||
73d3864a HX |
232 | if (crypto_is_larval(q)) { |
233 | if (!strcmp(alg->cra_driver_name, q->cra_driver_name)) | |
234 | goto err; | |
235 | continue; | |
236 | } | |
237 | ||
238 | if (!strcmp(q->cra_driver_name, alg->cra_name) || | |
239 | !strcmp(q->cra_name, alg->cra_driver_name)) | |
240 | goto err; | |
241 | } | |
242 | ||
243 | larval = crypto_larval_alloc(alg->cra_name, | |
244 | alg->cra_flags | CRYPTO_ALG_TESTED, 0); | |
245 | if (IS_ERR(larval)) | |
246 | goto out; | |
247 | ||
248 | ret = -ENOENT; | |
249 | larval->adult = crypto_mod_get(alg); | |
250 | if (!larval->adult) | |
251 | goto free_larval; | |
252 | ||
ce8614a3 | 253 | refcount_set(&larval->alg.cra_refcnt, 1); |
73d3864a HX |
254 | memcpy(larval->alg.cra_driver_name, alg->cra_driver_name, |
255 | CRYPTO_MAX_ALG_NAME); | |
256 | larval->alg.cra_priority = alg->cra_priority; | |
257 | ||
258 | list_add(&alg->cra_list, &crypto_alg_list); | |
259 | list_add(&larval->alg.cra_list, &crypto_alg_list); | |
260 | ||
1f6669b9 | 261 | crypto_stats_init(alg); |
cac5818c | 262 | |
5357c6c4 | 263 | out: |
73d3864a HX |
264 | return larval; |
265 | ||
266 | free_larval: | |
267 | kfree(larval); | |
268 | err: | |
269 | larval = ERR_PTR(ret); | |
270 | goto out; | |
271 | } | |
272 | ||
273 | void crypto_alg_tested(const char *name, int err) | |
274 | { | |
275 | struct crypto_larval *test; | |
276 | struct crypto_alg *alg; | |
277 | struct crypto_alg *q; | |
278 | LIST_HEAD(list); | |
279 | ||
280 | down_write(&crypto_alg_sem); | |
281 | list_for_each_entry(q, &crypto_alg_list, cra_list) { | |
b8e15992 | 282 | if (crypto_is_moribund(q) || !crypto_is_larval(q)) |
73d3864a HX |
283 | continue; |
284 | ||
285 | test = (struct crypto_larval *)q; | |
286 | ||
287 | if (!strcmp(q->cra_driver_name, name)) | |
288 | goto found; | |
289 | } | |
290 | ||
c7235857 | 291 | pr_err("alg: Unexpected test result for %s: %d\n", name, err); |
73d3864a HX |
292 | goto unlock; |
293 | ||
294 | found: | |
b8e15992 | 295 | q->cra_flags |= CRYPTO_ALG_DEAD; |
73d3864a HX |
296 | alg = test->adult; |
297 | if (err || list_empty(&alg->cra_list)) | |
298 | goto complete; | |
299 | ||
300 | alg->cra_flags |= CRYPTO_ALG_TESTED; | |
301 | ||
302 | list_for_each_entry(q, &crypto_alg_list, cra_list) { | |
303 | if (q == alg) | |
304 | continue; | |
6bfd4809 HX |
305 | |
306 | if (crypto_is_moribund(q)) | |
307 | continue; | |
308 | ||
309 | if (crypto_is_larval(q)) { | |
2825982d HX |
310 | struct crypto_larval *larval = (void *)q; |
311 | ||
d8058480 HX |
312 | /* |
313 | * Check to see if either our generic name or | |
314 | * specific name can satisfy the name requested | |
315 | * by the larval entry q. | |
316 | */ | |
6bfd4809 HX |
317 | if (strcmp(alg->cra_name, q->cra_name) && |
318 | strcmp(alg->cra_driver_name, q->cra_name)) | |
319 | continue; | |
320 | ||
321 | if (larval->adult) | |
322 | continue; | |
492e2b63 HX |
323 | if ((q->cra_flags ^ alg->cra_flags) & larval->mask) |
324 | continue; | |
2825982d HX |
325 | if (!crypto_mod_get(alg)) |
326 | continue; | |
6bfd4809 | 327 | |
2825982d | 328 | larval->adult = alg; |
6bfd4809 | 329 | continue; |
2825982d | 330 | } |
6bfd4809 HX |
331 | |
332 | if (strcmp(alg->cra_name, q->cra_name)) | |
333 | continue; | |
334 | ||
335 | if (strcmp(alg->cra_driver_name, q->cra_driver_name) && | |
336 | q->cra_priority > alg->cra_priority) | |
337 | continue; | |
338 | ||
2bf29016 | 339 | crypto_remove_spawns(q, &list, alg); |
cce9e06d | 340 | } |
2825982d | 341 | |
73d3864a HX |
342 | complete: |
343 | complete_all(&test->completion); | |
2825982d | 344 | |
73d3864a HX |
345 | unlock: |
346 | up_write(&crypto_alg_sem); | |
347 | ||
348 | crypto_remove_final(&list); | |
cce9e06d | 349 | } |
73d3864a | 350 | EXPORT_SYMBOL_GPL(crypto_alg_tested); |
4cc7720c | 351 | |
22e5b20b | 352 | void crypto_remove_final(struct list_head *list) |
6bfd4809 HX |
353 | { |
354 | struct crypto_alg *alg; | |
355 | struct crypto_alg *n; | |
356 | ||
357 | list_for_each_entry_safe(alg, n, list, cra_list) { | |
358 | list_del_init(&alg->cra_list); | |
359 | crypto_alg_put(alg); | |
360 | } | |
361 | } | |
22e5b20b | 362 | EXPORT_SYMBOL_GPL(crypto_remove_final); |
6bfd4809 | 363 | |
73d3864a HX |
364 | static void crypto_wait_for_test(struct crypto_larval *larval) |
365 | { | |
366 | int err; | |
367 | ||
368 | err = crypto_probing_notify(CRYPTO_MSG_ALG_REGISTER, larval->adult); | |
369 | if (err != NOTIFY_STOP) { | |
370 | if (WARN_ON(err != NOTIFY_DONE)) | |
371 | goto out; | |
372 | crypto_alg_tested(larval->alg.cra_driver_name, 0); | |
373 | } | |
374 | ||
3fc89adb | 375 | err = wait_for_completion_killable(&larval->completion); |
73d3864a | 376 | WARN_ON(err); |
dd8b083f MP |
377 | if (!err) |
378 | crypto_probing_notify(CRYPTO_MSG_ALG_LOADED, larval); | |
73d3864a HX |
379 | |
380 | out: | |
381 | crypto_larval_kill(&larval->alg); | |
382 | } | |
383 | ||
4cc7720c HX |
384 | int crypto_register_alg(struct crypto_alg *alg) |
385 | { | |
73d3864a | 386 | struct crypto_larval *larval; |
4cc7720c HX |
387 | int err; |
388 | ||
d6040764 | 389 | alg->cra_flags &= ~CRYPTO_ALG_DEAD; |
4cc7720c HX |
390 | err = crypto_check_alg(alg); |
391 | if (err) | |
392 | return err; | |
393 | ||
394 | down_write(&crypto_alg_sem); | |
73d3864a | 395 | larval = __crypto_register_alg(alg); |
4cc7720c HX |
396 | up_write(&crypto_alg_sem); |
397 | ||
73d3864a HX |
398 | if (IS_ERR(larval)) |
399 | return PTR_ERR(larval); | |
400 | ||
401 | crypto_wait_for_test(larval); | |
402 | return 0; | |
4cc7720c | 403 | } |
cce9e06d HX |
404 | EXPORT_SYMBOL_GPL(crypto_register_alg); |
405 | ||
6bfd4809 HX |
406 | static int crypto_remove_alg(struct crypto_alg *alg, struct list_head *list) |
407 | { | |
408 | if (unlikely(list_empty(&alg->cra_list))) | |
409 | return -ENOENT; | |
410 | ||
411 | alg->cra_flags |= CRYPTO_ALG_DEAD; | |
412 | ||
6bfd4809 | 413 | list_del_init(&alg->cra_list); |
2bf29016 | 414 | crypto_remove_spawns(alg, list, NULL); |
6bfd4809 HX |
415 | |
416 | return 0; | |
417 | } | |
418 | ||
cce9e06d HX |
419 | int crypto_unregister_alg(struct crypto_alg *alg) |
420 | { | |
6bfd4809 HX |
421 | int ret; |
422 | LIST_HEAD(list); | |
5357c6c4 | 423 | |
cce9e06d | 424 | down_write(&crypto_alg_sem); |
6bfd4809 | 425 | ret = crypto_remove_alg(alg, &list); |
cce9e06d HX |
426 | up_write(&crypto_alg_sem); |
427 | ||
428 | if (ret) | |
429 | return ret; | |
430 | ||
ce8614a3 | 431 | BUG_ON(refcount_read(&alg->cra_refcnt) != 1); |
cce9e06d HX |
432 | if (alg->cra_destroy) |
433 | alg->cra_destroy(alg); | |
434 | ||
6bfd4809 | 435 | crypto_remove_final(&list); |
cce9e06d HX |
436 | return 0; |
437 | } | |
438 | EXPORT_SYMBOL_GPL(crypto_unregister_alg); | |
439 | ||
4b004346 MB |
440 | int crypto_register_algs(struct crypto_alg *algs, int count) |
441 | { | |
442 | int i, ret; | |
443 | ||
444 | for (i = 0; i < count; i++) { | |
445 | ret = crypto_register_alg(&algs[i]); | |
446 | if (ret) | |
447 | goto err; | |
448 | } | |
449 | ||
450 | return 0; | |
451 | ||
452 | err: | |
453 | for (--i; i >= 0; --i) | |
454 | crypto_unregister_alg(&algs[i]); | |
455 | ||
456 | return ret; | |
457 | } | |
458 | EXPORT_SYMBOL_GPL(crypto_register_algs); | |
459 | ||
460 | int crypto_unregister_algs(struct crypto_alg *algs, int count) | |
461 | { | |
462 | int i, ret; | |
463 | ||
464 | for (i = 0; i < count; i++) { | |
465 | ret = crypto_unregister_alg(&algs[i]); | |
466 | if (ret) | |
467 | pr_err("Failed to unregister %s %s: %d\n", | |
468 | algs[i].cra_driver_name, algs[i].cra_name, ret); | |
469 | } | |
470 | ||
471 | return 0; | |
472 | } | |
473 | EXPORT_SYMBOL_GPL(crypto_unregister_algs); | |
474 | ||
4cc7720c HX |
475 | int crypto_register_template(struct crypto_template *tmpl) |
476 | { | |
477 | struct crypto_template *q; | |
478 | int err = -EEXIST; | |
479 | ||
480 | down_write(&crypto_alg_sem); | |
481 | ||
002c77a4 JW |
482 | crypto_check_module_sig(tmpl->module); |
483 | ||
4cc7720c HX |
484 | list_for_each_entry(q, &crypto_template_list, list) { |
485 | if (q == tmpl) | |
486 | goto out; | |
487 | } | |
488 | ||
489 | list_add(&tmpl->list, &crypto_template_list); | |
490 | err = 0; | |
491 | out: | |
492 | up_write(&crypto_alg_sem); | |
493 | return err; | |
494 | } | |
495 | EXPORT_SYMBOL_GPL(crypto_register_template); | |
496 | ||
9572442d XW |
497 | int crypto_register_templates(struct crypto_template *tmpls, int count) |
498 | { | |
499 | int i, err; | |
500 | ||
501 | for (i = 0; i < count; i++) { | |
502 | err = crypto_register_template(&tmpls[i]); | |
503 | if (err) | |
504 | goto out; | |
505 | } | |
506 | return 0; | |
507 | ||
508 | out: | |
509 | for (--i; i >= 0; --i) | |
510 | crypto_unregister_template(&tmpls[i]); | |
511 | return err; | |
512 | } | |
513 | EXPORT_SYMBOL_GPL(crypto_register_templates); | |
514 | ||
4cc7720c HX |
515 | void crypto_unregister_template(struct crypto_template *tmpl) |
516 | { | |
517 | struct crypto_instance *inst; | |
b67bfe0d | 518 | struct hlist_node *n; |
4cc7720c | 519 | struct hlist_head *list; |
6bfd4809 | 520 | LIST_HEAD(users); |
4cc7720c HX |
521 | |
522 | down_write(&crypto_alg_sem); | |
523 | ||
524 | BUG_ON(list_empty(&tmpl->list)); | |
525 | list_del_init(&tmpl->list); | |
526 | ||
527 | list = &tmpl->instances; | |
b67bfe0d | 528 | hlist_for_each_entry(inst, list, list) { |
6bfd4809 | 529 | int err = crypto_remove_alg(&inst->alg, &users); |
0efcb8d5 | 530 | |
6bfd4809 | 531 | BUG_ON(err); |
4cc7720c HX |
532 | } |
533 | ||
534 | up_write(&crypto_alg_sem); | |
535 | ||
b67bfe0d | 536 | hlist_for_each_entry_safe(inst, n, list, list) { |
ce8614a3 | 537 | BUG_ON(refcount_read(&inst->alg.cra_refcnt) != 1); |
319382a6 | 538 | crypto_free_instance(inst); |
4cc7720c | 539 | } |
6bfd4809 | 540 | crypto_remove_final(&users); |
4cc7720c HX |
541 | } |
542 | EXPORT_SYMBOL_GPL(crypto_unregister_template); | |
543 | ||
9572442d XW |
544 | void crypto_unregister_templates(struct crypto_template *tmpls, int count) |
545 | { | |
546 | int i; | |
547 | ||
548 | for (i = count - 1; i >= 0; --i) | |
549 | crypto_unregister_template(&tmpls[i]); | |
550 | } | |
551 | EXPORT_SYMBOL_GPL(crypto_unregister_templates); | |
552 | ||
4cc7720c HX |
553 | static struct crypto_template *__crypto_lookup_template(const char *name) |
554 | { | |
555 | struct crypto_template *q, *tmpl = NULL; | |
556 | ||
557 | down_read(&crypto_alg_sem); | |
558 | list_for_each_entry(q, &crypto_template_list, list) { | |
559 | if (strcmp(q->name, name)) | |
560 | continue; | |
561 | if (unlikely(!crypto_tmpl_get(q))) | |
562 | continue; | |
563 | ||
564 | tmpl = q; | |
565 | break; | |
566 | } | |
567 | up_read(&crypto_alg_sem); | |
568 | ||
569 | return tmpl; | |
570 | } | |
571 | ||
572 | struct crypto_template *crypto_lookup_template(const char *name) | |
573 | { | |
4943ba16 KC |
574 | return try_then_request_module(__crypto_lookup_template(name), |
575 | "crypto-%s", name); | |
4cc7720c HX |
576 | } |
577 | EXPORT_SYMBOL_GPL(crypto_lookup_template); | |
578 | ||
579 | int crypto_register_instance(struct crypto_template *tmpl, | |
580 | struct crypto_instance *inst) | |
581 | { | |
73d3864a HX |
582 | struct crypto_larval *larval; |
583 | int err; | |
4cc7720c | 584 | |
4cc7720c HX |
585 | err = crypto_check_alg(&inst->alg); |
586 | if (err) | |
9c521a20 SM |
587 | return err; |
588 | ||
4cc7720c | 589 | inst->alg.cra_module = tmpl->module; |
64a947b1 | 590 | inst->alg.cra_flags |= CRYPTO_ALG_INSTANCE; |
4cc7720c HX |
591 | |
592 | down_write(&crypto_alg_sem); | |
593 | ||
73d3864a HX |
594 | larval = __crypto_register_alg(&inst->alg); |
595 | if (IS_ERR(larval)) | |
4cc7720c HX |
596 | goto unlock; |
597 | ||
598 | hlist_add_head(&inst->list, &tmpl->instances); | |
599 | inst->tmpl = tmpl; | |
600 | ||
601 | unlock: | |
602 | up_write(&crypto_alg_sem); | |
603 | ||
73d3864a HX |
604 | err = PTR_ERR(larval); |
605 | if (IS_ERR(larval)) | |
606 | goto err; | |
607 | ||
608 | crypto_wait_for_test(larval); | |
609 | err = 0; | |
6bfd4809 | 610 | |
4cc7720c HX |
611 | err: |
612 | return err; | |
613 | } | |
614 | EXPORT_SYMBOL_GPL(crypto_register_instance); | |
ce3fd840 | 615 | |
87b16756 | 616 | int crypto_unregister_instance(struct crypto_instance *inst) |
ce3fd840 | 617 | { |
1f723710 | 618 | LIST_HEAD(list); |
ce3fd840 | 619 | |
ce3fd840 SK |
620 | down_write(&crypto_alg_sem); |
621 | ||
87b16756 | 622 | crypto_remove_spawns(&inst->alg, &list, NULL); |
1f723710 | 623 | crypto_remove_instance(inst, &list); |
ce3fd840 SK |
624 | |
625 | up_write(&crypto_alg_sem); | |
626 | ||
1f723710 | 627 | crypto_remove_final(&list); |
ce3fd840 SK |
628 | |
629 | return 0; | |
630 | } | |
631 | EXPORT_SYMBOL_GPL(crypto_unregister_instance); | |
4cc7720c | 632 | |
6bfd4809 | 633 | int crypto_init_spawn(struct crypto_spawn *spawn, struct crypto_alg *alg, |
a73e6996 | 634 | struct crypto_instance *inst, u32 mask) |
6bfd4809 HX |
635 | { |
636 | int err = -EAGAIN; | |
637 | ||
6b476662 EB |
638 | if (WARN_ON_ONCE(inst == NULL)) |
639 | return -EINVAL; | |
640 | ||
6bfd4809 | 641 | spawn->inst = inst; |
a73e6996 | 642 | spawn->mask = mask; |
6bfd4809 HX |
643 | |
644 | down_write(&crypto_alg_sem); | |
645 | if (!crypto_is_moribund(alg)) { | |
646 | list_add(&spawn->list, &alg->cra_users); | |
647 | spawn->alg = alg; | |
648 | err = 0; | |
649 | } | |
650 | up_write(&crypto_alg_sem); | |
651 | ||
652 | return err; | |
653 | } | |
654 | EXPORT_SYMBOL_GPL(crypto_init_spawn); | |
655 | ||
97eedce1 HX |
656 | int crypto_init_spawn2(struct crypto_spawn *spawn, struct crypto_alg *alg, |
657 | struct crypto_instance *inst, | |
658 | const struct crypto_type *frontend) | |
659 | { | |
660 | int err = -EINVAL; | |
661 | ||
c614e109 | 662 | if ((alg->cra_flags ^ frontend->type) & frontend->maskset) |
97eedce1 HX |
663 | goto out; |
664 | ||
665 | spawn->frontend = frontend; | |
666 | err = crypto_init_spawn(spawn, alg, inst, frontend->maskset); | |
667 | ||
668 | out: | |
669 | return err; | |
670 | } | |
671 | EXPORT_SYMBOL_GPL(crypto_init_spawn2); | |
672 | ||
d6ef2f19 HX |
673 | int crypto_grab_spawn(struct crypto_spawn *spawn, const char *name, |
674 | u32 type, u32 mask) | |
675 | { | |
676 | struct crypto_alg *alg; | |
677 | int err; | |
678 | ||
679 | alg = crypto_find_alg(name, spawn->frontend, type, mask); | |
680 | if (IS_ERR(alg)) | |
681 | return PTR_ERR(alg); | |
682 | ||
683 | err = crypto_init_spawn(spawn, alg, spawn->inst, mask); | |
684 | crypto_mod_put(alg); | |
685 | return err; | |
686 | } | |
687 | EXPORT_SYMBOL_GPL(crypto_grab_spawn); | |
688 | ||
6bfd4809 HX |
689 | void crypto_drop_spawn(struct crypto_spawn *spawn) |
690 | { | |
7ede5a5b HX |
691 | if (!spawn->alg) |
692 | return; | |
693 | ||
6bfd4809 HX |
694 | down_write(&crypto_alg_sem); |
695 | list_del(&spawn->list); | |
696 | up_write(&crypto_alg_sem); | |
697 | } | |
698 | EXPORT_SYMBOL_GPL(crypto_drop_spawn); | |
699 | ||
97eedce1 | 700 | static struct crypto_alg *crypto_spawn_alg(struct crypto_spawn *spawn) |
6bfd4809 HX |
701 | { |
702 | struct crypto_alg *alg; | |
703 | struct crypto_alg *alg2; | |
6bfd4809 HX |
704 | |
705 | down_read(&crypto_alg_sem); | |
706 | alg = spawn->alg; | |
707 | alg2 = alg; | |
708 | if (alg2) | |
709 | alg2 = crypto_mod_get(alg2); | |
710 | up_read(&crypto_alg_sem); | |
711 | ||
712 | if (!alg2) { | |
713 | if (alg) | |
714 | crypto_shoot_alg(alg); | |
715 | return ERR_PTR(-EAGAIN); | |
716 | } | |
717 | ||
97eedce1 HX |
718 | return alg; |
719 | } | |
720 | ||
721 | struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn, u32 type, | |
722 | u32 mask) | |
723 | { | |
724 | struct crypto_alg *alg; | |
725 | struct crypto_tfm *tfm; | |
726 | ||
727 | alg = crypto_spawn_alg(spawn); | |
728 | if (IS_ERR(alg)) | |
729 | return ERR_CAST(alg); | |
730 | ||
2e306ee0 HX |
731 | tfm = ERR_PTR(-EINVAL); |
732 | if (unlikely((alg->cra_flags ^ type) & mask)) | |
733 | goto out_put_alg; | |
734 | ||
27d2a330 | 735 | tfm = __crypto_alloc_tfm(alg, type, mask); |
6bfd4809 | 736 | if (IS_ERR(tfm)) |
2e306ee0 HX |
737 | goto out_put_alg; |
738 | ||
739 | return tfm; | |
6bfd4809 | 740 | |
2e306ee0 HX |
741 | out_put_alg: |
742 | crypto_mod_put(alg); | |
6bfd4809 HX |
743 | return tfm; |
744 | } | |
745 | EXPORT_SYMBOL_GPL(crypto_spawn_tfm); | |
746 | ||
97eedce1 HX |
747 | void *crypto_spawn_tfm2(struct crypto_spawn *spawn) |
748 | { | |
749 | struct crypto_alg *alg; | |
750 | struct crypto_tfm *tfm; | |
751 | ||
752 | alg = crypto_spawn_alg(spawn); | |
753 | if (IS_ERR(alg)) | |
754 | return ERR_CAST(alg); | |
755 | ||
756 | tfm = crypto_create_tfm(alg, spawn->frontend); | |
757 | if (IS_ERR(tfm)) | |
758 | goto out_put_alg; | |
759 | ||
760 | return tfm; | |
761 | ||
762 | out_put_alg: | |
763 | crypto_mod_put(alg); | |
764 | return tfm; | |
765 | } | |
766 | EXPORT_SYMBOL_GPL(crypto_spawn_tfm2); | |
767 | ||
2825982d HX |
768 | int crypto_register_notifier(struct notifier_block *nb) |
769 | { | |
770 | return blocking_notifier_chain_register(&crypto_chain, nb); | |
771 | } | |
772 | EXPORT_SYMBOL_GPL(crypto_register_notifier); | |
773 | ||
774 | int crypto_unregister_notifier(struct notifier_block *nb) | |
775 | { | |
776 | return blocking_notifier_chain_unregister(&crypto_chain, nb); | |
777 | } | |
778 | EXPORT_SYMBOL_GPL(crypto_unregister_notifier); | |
779 | ||
ebc610e5 | 780 | struct crypto_attr_type *crypto_get_attr_type(struct rtattr **tb) |
7fed0bf2 | 781 | { |
39e1ee01 | 782 | struct rtattr *rta = tb[0]; |
ebc610e5 HX |
783 | struct crypto_attr_type *algt; |
784 | ||
785 | if (!rta) | |
786 | return ERR_PTR(-ENOENT); | |
787 | if (RTA_PAYLOAD(rta) < sizeof(*algt)) | |
788 | return ERR_PTR(-EINVAL); | |
39e1ee01 HX |
789 | if (rta->rta_type != CRYPTOA_TYPE) |
790 | return ERR_PTR(-EINVAL); | |
ebc610e5 HX |
791 | |
792 | algt = RTA_DATA(rta); | |
793 | ||
794 | return algt; | |
795 | } | |
796 | EXPORT_SYMBOL_GPL(crypto_get_attr_type); | |
797 | ||
798 | int crypto_check_attr_type(struct rtattr **tb, u32 type) | |
799 | { | |
800 | struct crypto_attr_type *algt; | |
801 | ||
802 | algt = crypto_get_attr_type(tb); | |
803 | if (IS_ERR(algt)) | |
804 | return PTR_ERR(algt); | |
805 | ||
806 | if ((algt->type ^ type) & algt->mask) | |
807 | return -EINVAL; | |
808 | ||
809 | return 0; | |
810 | } | |
811 | EXPORT_SYMBOL_GPL(crypto_check_attr_type); | |
812 | ||
68b6c7d6 | 813 | const char *crypto_attr_alg_name(struct rtattr *rta) |
ebc610e5 | 814 | { |
7fed0bf2 HX |
815 | struct crypto_attr_alg *alga; |
816 | ||
ebc610e5 HX |
817 | if (!rta) |
818 | return ERR_PTR(-ENOENT); | |
819 | if (RTA_PAYLOAD(rta) < sizeof(*alga)) | |
7fed0bf2 | 820 | return ERR_PTR(-EINVAL); |
39e1ee01 HX |
821 | if (rta->rta_type != CRYPTOA_ALG) |
822 | return ERR_PTR(-EINVAL); | |
7fed0bf2 HX |
823 | |
824 | alga = RTA_DATA(rta); | |
825 | alga->name[CRYPTO_MAX_ALG_NAME - 1] = 0; | |
826 | ||
68b6c7d6 HX |
827 | return alga->name; |
828 | } | |
829 | EXPORT_SYMBOL_GPL(crypto_attr_alg_name); | |
830 | ||
d06854f0 HX |
831 | struct crypto_alg *crypto_attr_alg2(struct rtattr *rta, |
832 | const struct crypto_type *frontend, | |
833 | u32 type, u32 mask) | |
68b6c7d6 HX |
834 | { |
835 | const char *name; | |
68b6c7d6 HX |
836 | |
837 | name = crypto_attr_alg_name(rta); | |
68b6c7d6 | 838 | if (IS_ERR(name)) |
3e8afe35 | 839 | return ERR_CAST(name); |
68b6c7d6 | 840 | |
d06854f0 | 841 | return crypto_find_alg(name, frontend, type, mask); |
7fed0bf2 | 842 | } |
d06854f0 | 843 | EXPORT_SYMBOL_GPL(crypto_attr_alg2); |
3c09f17c HX |
844 | |
845 | int crypto_attr_u32(struct rtattr *rta, u32 *num) | |
846 | { | |
847 | struct crypto_attr_u32 *nu32; | |
848 | ||
849 | if (!rta) | |
850 | return -ENOENT; | |
851 | if (RTA_PAYLOAD(rta) < sizeof(*nu32)) | |
852 | return -EINVAL; | |
853 | if (rta->rta_type != CRYPTOA_U32) | |
854 | return -EINVAL; | |
855 | ||
856 | nu32 = RTA_DATA(rta); | |
857 | *num = nu32->num; | |
858 | ||
859 | return 0; | |
860 | } | |
861 | EXPORT_SYMBOL_GPL(crypto_attr_u32); | |
7fed0bf2 | 862 | |
32f27c74 HX |
863 | int crypto_inst_setname(struct crypto_instance *inst, const char *name, |
864 | struct crypto_alg *alg) | |
865 | { | |
866 | if (snprintf(inst->alg.cra_name, CRYPTO_MAX_ALG_NAME, "%s(%s)", name, | |
867 | alg->cra_name) >= CRYPTO_MAX_ALG_NAME) | |
868 | return -ENAMETOOLONG; | |
869 | ||
870 | if (snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s(%s)", | |
871 | name, alg->cra_driver_name) >= CRYPTO_MAX_ALG_NAME) | |
872 | return -ENAMETOOLONG; | |
873 | ||
874 | return 0; | |
875 | } | |
876 | EXPORT_SYMBOL_GPL(crypto_inst_setname); | |
877 | ||
14aa1a83 EB |
878 | void *crypto_alloc_instance(const char *name, struct crypto_alg *alg, |
879 | unsigned int head) | |
7fed0bf2 HX |
880 | { |
881 | struct crypto_instance *inst; | |
70ec7bb9 | 882 | char *p; |
7fed0bf2 HX |
883 | int err; |
884 | ||
70ec7bb9 HX |
885 | p = kzalloc(head + sizeof(*inst) + sizeof(struct crypto_spawn), |
886 | GFP_KERNEL); | |
887 | if (!p) | |
7fed0bf2 HX |
888 | return ERR_PTR(-ENOMEM); |
889 | ||
70ec7bb9 HX |
890 | inst = (void *)(p + head); |
891 | ||
32f27c74 HX |
892 | err = crypto_inst_setname(inst, name, alg); |
893 | if (err) | |
7fed0bf2 HX |
894 | goto err_free_inst; |
895 | ||
70ec7bb9 HX |
896 | return p; |
897 | ||
898 | err_free_inst: | |
899 | kfree(p); | |
900 | return ERR_PTR(err); | |
901 | } | |
7fed0bf2 HX |
902 | EXPORT_SYMBOL_GPL(crypto_alloc_instance); |
903 | ||
b5b7f088 HX |
904 | void crypto_init_queue(struct crypto_queue *queue, unsigned int max_qlen) |
905 | { | |
906 | INIT_LIST_HEAD(&queue->list); | |
907 | queue->backlog = &queue->list; | |
908 | queue->qlen = 0; | |
909 | queue->max_qlen = max_qlen; | |
910 | } | |
911 | EXPORT_SYMBOL_GPL(crypto_init_queue); | |
912 | ||
913 | int crypto_enqueue_request(struct crypto_queue *queue, | |
914 | struct crypto_async_request *request) | |
915 | { | |
916 | int err = -EINPROGRESS; | |
917 | ||
918 | if (unlikely(queue->qlen >= queue->max_qlen)) { | |
6b80ea38 GBY |
919 | if (!(request->flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) { |
920 | err = -ENOSPC; | |
b5b7f088 | 921 | goto out; |
6b80ea38 GBY |
922 | } |
923 | err = -EBUSY; | |
b5b7f088 HX |
924 | if (queue->backlog == &queue->list) |
925 | queue->backlog = &request->list; | |
926 | } | |
927 | ||
928 | queue->qlen++; | |
929 | list_add_tail(&request->list, &queue->list); | |
930 | ||
931 | out: | |
932 | return err; | |
933 | } | |
934 | EXPORT_SYMBOL_GPL(crypto_enqueue_request); | |
935 | ||
31d228cc | 936 | struct crypto_async_request *crypto_dequeue_request(struct crypto_queue *queue) |
b5b7f088 HX |
937 | { |
938 | struct list_head *request; | |
939 | ||
940 | if (unlikely(!queue->qlen)) | |
941 | return NULL; | |
942 | ||
943 | queue->qlen--; | |
944 | ||
945 | if (queue->backlog != &queue->list) | |
946 | queue->backlog = queue->backlog->next; | |
947 | ||
948 | request = queue->list.next; | |
949 | list_del(request); | |
950 | ||
31d228cc | 951 | return list_entry(request, struct crypto_async_request, list); |
b5b7f088 HX |
952 | } |
953 | EXPORT_SYMBOL_GPL(crypto_dequeue_request); | |
954 | ||
955 | int crypto_tfm_in_queue(struct crypto_queue *queue, struct crypto_tfm *tfm) | |
956 | { | |
957 | struct crypto_async_request *req; | |
958 | ||
959 | list_for_each_entry(req, &queue->list, list) { | |
960 | if (req->tfm == tfm) | |
961 | return 1; | |
962 | } | |
963 | ||
964 | return 0; | |
965 | } | |
966 | EXPORT_SYMBOL_GPL(crypto_tfm_in_queue); | |
967 | ||
7613636d HX |
968 | static inline void crypto_inc_byte(u8 *a, unsigned int size) |
969 | { | |
970 | u8 *b = (a + size); | |
971 | u8 c; | |
972 | ||
973 | for (; size; size--) { | |
974 | c = *--b + 1; | |
975 | *b = c; | |
976 | if (c) | |
977 | break; | |
978 | } | |
979 | } | |
980 | ||
981 | void crypto_inc(u8 *a, unsigned int size) | |
982 | { | |
983 | __be32 *b = (__be32 *)(a + size); | |
984 | u32 c; | |
985 | ||
db91af0f | 986 | if (IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) || |
27c539ae | 987 | IS_ALIGNED((unsigned long)b, __alignof__(*b))) |
db91af0f AB |
988 | for (; size >= 4; size -= 4) { |
989 | c = be32_to_cpu(*--b) + 1; | |
990 | *b = cpu_to_be32(c); | |
27c539ae | 991 | if (likely(c)) |
db91af0f AB |
992 | return; |
993 | } | |
7613636d HX |
994 | |
995 | crypto_inc_byte(a, size); | |
996 | } | |
997 | EXPORT_SYMBOL_GPL(crypto_inc); | |
998 | ||
a7c391f0 | 999 | void __crypto_xor(u8 *dst, const u8 *src1, const u8 *src2, unsigned int len) |
7613636d | 1000 | { |
db91af0f AB |
1001 | int relalign = 0; |
1002 | ||
1003 | if (!IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)) { | |
1004 | int size = sizeof(unsigned long); | |
a7c391f0 AB |
1005 | int d = (((unsigned long)dst ^ (unsigned long)src1) | |
1006 | ((unsigned long)dst ^ (unsigned long)src2)) & | |
1007 | (size - 1); | |
db91af0f AB |
1008 | |
1009 | relalign = d ? 1 << __ffs(d) : size; | |
1010 | ||
1011 | /* | |
1012 | * If we care about alignment, process as many bytes as | |
1013 | * needed to advance dst and src to values whose alignments | |
1014 | * equal their relative alignment. This will allow us to | |
1015 | * process the remainder of the input using optimal strides. | |
1016 | */ | |
1017 | while (((unsigned long)dst & (relalign - 1)) && len > 0) { | |
a7c391f0 | 1018 | *dst++ = *src1++ ^ *src2++; |
db91af0f AB |
1019 | len--; |
1020 | } | |
1021 | } | |
7613636d | 1022 | |
db91af0f | 1023 | while (IS_ENABLED(CONFIG_64BIT) && len >= 8 && !(relalign & 7)) { |
a7c391f0 | 1024 | *(u64 *)dst = *(u64 *)src1 ^ *(u64 *)src2; |
db91af0f | 1025 | dst += 8; |
a7c391f0 AB |
1026 | src1 += 8; |
1027 | src2 += 8; | |
db91af0f AB |
1028 | len -= 8; |
1029 | } | |
7613636d | 1030 | |
db91af0f | 1031 | while (len >= 4 && !(relalign & 3)) { |
a7c391f0 | 1032 | *(u32 *)dst = *(u32 *)src1 ^ *(u32 *)src2; |
db91af0f | 1033 | dst += 4; |
a7c391f0 AB |
1034 | src1 += 4; |
1035 | src2 += 4; | |
db91af0f AB |
1036 | len -= 4; |
1037 | } | |
1038 | ||
1039 | while (len >= 2 && !(relalign & 1)) { | |
a7c391f0 | 1040 | *(u16 *)dst = *(u16 *)src1 ^ *(u16 *)src2; |
db91af0f | 1041 | dst += 2; |
a7c391f0 AB |
1042 | src1 += 2; |
1043 | src2 += 2; | |
db91af0f AB |
1044 | len -= 2; |
1045 | } | |
7613636d | 1046 | |
db91af0f | 1047 | while (len--) |
a7c391f0 | 1048 | *dst++ = *src1++ ^ *src2++; |
7613636d | 1049 | } |
db91af0f | 1050 | EXPORT_SYMBOL_GPL(__crypto_xor); |
7613636d | 1051 | |
38d21433 HX |
1052 | unsigned int crypto_alg_extsize(struct crypto_alg *alg) |
1053 | { | |
c2110f28 HX |
1054 | return alg->cra_ctxsize + |
1055 | (alg->cra_alignmask & ~(crypto_tfm_ctx_alignment() - 1)); | |
38d21433 HX |
1056 | } |
1057 | EXPORT_SYMBOL_GPL(crypto_alg_extsize); | |
1058 | ||
f2aefdab HX |
1059 | int crypto_type_has_alg(const char *name, const struct crypto_type *frontend, |
1060 | u32 type, u32 mask) | |
1061 | { | |
1062 | int ret = 0; | |
1063 | struct crypto_alg *alg = crypto_find_alg(name, frontend, type, mask); | |
1064 | ||
1065 | if (!IS_ERR(alg)) { | |
1066 | crypto_mod_put(alg); | |
1067 | ret = 1; | |
1068 | } | |
1069 | ||
1070 | return ret; | |
1071 | } | |
1072 | EXPORT_SYMBOL_GPL(crypto_type_has_alg); | |
1073 | ||
f7d76e05 | 1074 | #ifdef CONFIG_CRYPTO_STATS |
1f6669b9 CL |
1075 | void crypto_stats_init(struct crypto_alg *alg) |
1076 | { | |
1077 | memset(&alg->stats, 0, sizeof(alg->stats)); | |
1078 | } | |
1079 | EXPORT_SYMBOL_GPL(crypto_stats_init); | |
1080 | ||
f7d76e05 CL |
1081 | void crypto_stats_get(struct crypto_alg *alg) |
1082 | { | |
1083 | crypto_alg_get(alg); | |
1084 | } | |
1085 | EXPORT_SYMBOL_GPL(crypto_stats_get); | |
1086 | ||
1087 | void crypto_stats_ablkcipher_encrypt(unsigned int nbytes, int ret, | |
1088 | struct crypto_alg *alg) | |
1089 | { | |
1090 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1091 | atomic64_inc(&alg->stats.cipher.err_cnt); |
f7d76e05 | 1092 | } else { |
17c18f9e CL |
1093 | atomic64_inc(&alg->stats.cipher.encrypt_cnt); |
1094 | atomic64_add(nbytes, &alg->stats.cipher.encrypt_tlen); | |
f7d76e05 CL |
1095 | } |
1096 | crypto_alg_put(alg); | |
1097 | } | |
1098 | EXPORT_SYMBOL_GPL(crypto_stats_ablkcipher_encrypt); | |
1099 | ||
1100 | void crypto_stats_ablkcipher_decrypt(unsigned int nbytes, int ret, | |
1101 | struct crypto_alg *alg) | |
1102 | { | |
1103 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1104 | atomic64_inc(&alg->stats.cipher.err_cnt); |
f7d76e05 | 1105 | } else { |
17c18f9e CL |
1106 | atomic64_inc(&alg->stats.cipher.decrypt_cnt); |
1107 | atomic64_add(nbytes, &alg->stats.cipher.decrypt_tlen); | |
f7d76e05 CL |
1108 | } |
1109 | crypto_alg_put(alg); | |
1110 | } | |
1111 | EXPORT_SYMBOL_GPL(crypto_stats_ablkcipher_decrypt); | |
1112 | ||
1113 | void crypto_stats_aead_encrypt(unsigned int cryptlen, struct crypto_alg *alg, | |
1114 | int ret) | |
1115 | { | |
1116 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1117 | atomic64_inc(&alg->stats.aead.err_cnt); |
f7d76e05 | 1118 | } else { |
17c18f9e CL |
1119 | atomic64_inc(&alg->stats.aead.encrypt_cnt); |
1120 | atomic64_add(cryptlen, &alg->stats.aead.encrypt_tlen); | |
f7d76e05 CL |
1121 | } |
1122 | crypto_alg_put(alg); | |
1123 | } | |
1124 | EXPORT_SYMBOL_GPL(crypto_stats_aead_encrypt); | |
1125 | ||
1126 | void crypto_stats_aead_decrypt(unsigned int cryptlen, struct crypto_alg *alg, | |
1127 | int ret) | |
1128 | { | |
1129 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1130 | atomic64_inc(&alg->stats.aead.err_cnt); |
f7d76e05 | 1131 | } else { |
17c18f9e CL |
1132 | atomic64_inc(&alg->stats.aead.decrypt_cnt); |
1133 | atomic64_add(cryptlen, &alg->stats.aead.decrypt_tlen); | |
f7d76e05 CL |
1134 | } |
1135 | crypto_alg_put(alg); | |
1136 | } | |
1137 | EXPORT_SYMBOL_GPL(crypto_stats_aead_decrypt); | |
1138 | ||
1139 | void crypto_stats_akcipher_encrypt(unsigned int src_len, int ret, | |
1140 | struct crypto_alg *alg) | |
1141 | { | |
1142 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1143 | atomic64_inc(&alg->stats.akcipher.err_cnt); |
f7d76e05 | 1144 | } else { |
17c18f9e CL |
1145 | atomic64_inc(&alg->stats.akcipher.encrypt_cnt); |
1146 | atomic64_add(src_len, &alg->stats.akcipher.encrypt_tlen); | |
f7d76e05 CL |
1147 | } |
1148 | crypto_alg_put(alg); | |
1149 | } | |
1150 | EXPORT_SYMBOL_GPL(crypto_stats_akcipher_encrypt); | |
1151 | ||
1152 | void crypto_stats_akcipher_decrypt(unsigned int src_len, int ret, | |
1153 | struct crypto_alg *alg) | |
1154 | { | |
1155 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1156 | atomic64_inc(&alg->stats.akcipher.err_cnt); |
f7d76e05 | 1157 | } else { |
17c18f9e CL |
1158 | atomic64_inc(&alg->stats.akcipher.decrypt_cnt); |
1159 | atomic64_add(src_len, &alg->stats.akcipher.decrypt_tlen); | |
f7d76e05 CL |
1160 | } |
1161 | crypto_alg_put(alg); | |
1162 | } | |
1163 | EXPORT_SYMBOL_GPL(crypto_stats_akcipher_decrypt); | |
1164 | ||
1165 | void crypto_stats_akcipher_sign(int ret, struct crypto_alg *alg) | |
1166 | { | |
1167 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) | |
44f13133 | 1168 | atomic64_inc(&alg->stats.akcipher.err_cnt); |
f7d76e05 | 1169 | else |
17c18f9e | 1170 | atomic64_inc(&alg->stats.akcipher.sign_cnt); |
f7d76e05 CL |
1171 | crypto_alg_put(alg); |
1172 | } | |
1173 | EXPORT_SYMBOL_GPL(crypto_stats_akcipher_sign); | |
1174 | ||
1175 | void crypto_stats_akcipher_verify(int ret, struct crypto_alg *alg) | |
1176 | { | |
1177 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) | |
44f13133 | 1178 | atomic64_inc(&alg->stats.akcipher.err_cnt); |
f7d76e05 | 1179 | else |
17c18f9e | 1180 | atomic64_inc(&alg->stats.akcipher.verify_cnt); |
f7d76e05 CL |
1181 | crypto_alg_put(alg); |
1182 | } | |
1183 | EXPORT_SYMBOL_GPL(crypto_stats_akcipher_verify); | |
1184 | ||
1185 | void crypto_stats_compress(unsigned int slen, int ret, struct crypto_alg *alg) | |
1186 | { | |
1187 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1188 | atomic64_inc(&alg->stats.compress.err_cnt); |
f7d76e05 | 1189 | } else { |
17c18f9e CL |
1190 | atomic64_inc(&alg->stats.compress.compress_cnt); |
1191 | atomic64_add(slen, &alg->stats.compress.compress_tlen); | |
f7d76e05 CL |
1192 | } |
1193 | crypto_alg_put(alg); | |
1194 | } | |
1195 | EXPORT_SYMBOL_GPL(crypto_stats_compress); | |
1196 | ||
1197 | void crypto_stats_decompress(unsigned int slen, int ret, struct crypto_alg *alg) | |
1198 | { | |
1199 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1200 | atomic64_inc(&alg->stats.compress.err_cnt); |
f7d76e05 | 1201 | } else { |
17c18f9e CL |
1202 | atomic64_inc(&alg->stats.compress.decompress_cnt); |
1203 | atomic64_add(slen, &alg->stats.compress.decompress_tlen); | |
f7d76e05 CL |
1204 | } |
1205 | crypto_alg_put(alg); | |
1206 | } | |
1207 | EXPORT_SYMBOL_GPL(crypto_stats_decompress); | |
1208 | ||
1209 | void crypto_stats_ahash_update(unsigned int nbytes, int ret, | |
1210 | struct crypto_alg *alg) | |
1211 | { | |
1212 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) | |
44f13133 | 1213 | atomic64_inc(&alg->stats.hash.err_cnt); |
f7d76e05 | 1214 | else |
17c18f9e | 1215 | atomic64_add(nbytes, &alg->stats.hash.hash_tlen); |
f7d76e05 CL |
1216 | crypto_alg_put(alg); |
1217 | } | |
1218 | EXPORT_SYMBOL_GPL(crypto_stats_ahash_update); | |
1219 | ||
1220 | void crypto_stats_ahash_final(unsigned int nbytes, int ret, | |
1221 | struct crypto_alg *alg) | |
1222 | { | |
1223 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1224 | atomic64_inc(&alg->stats.hash.err_cnt); |
f7d76e05 | 1225 | } else { |
17c18f9e CL |
1226 | atomic64_inc(&alg->stats.hash.hash_cnt); |
1227 | atomic64_add(nbytes, &alg->stats.hash.hash_tlen); | |
f7d76e05 CL |
1228 | } |
1229 | crypto_alg_put(alg); | |
1230 | } | |
1231 | EXPORT_SYMBOL_GPL(crypto_stats_ahash_final); | |
1232 | ||
1233 | void crypto_stats_kpp_set_secret(struct crypto_alg *alg, int ret) | |
1234 | { | |
1235 | if (ret) | |
44f13133 | 1236 | atomic64_inc(&alg->stats.kpp.err_cnt); |
f7d76e05 | 1237 | else |
17c18f9e | 1238 | atomic64_inc(&alg->stats.kpp.setsecret_cnt); |
f7d76e05 CL |
1239 | crypto_alg_put(alg); |
1240 | } | |
1241 | EXPORT_SYMBOL_GPL(crypto_stats_kpp_set_secret); | |
1242 | ||
1243 | void crypto_stats_kpp_generate_public_key(struct crypto_alg *alg, int ret) | |
1244 | { | |
1245 | if (ret) | |
44f13133 | 1246 | atomic64_inc(&alg->stats.kpp.err_cnt); |
f7d76e05 | 1247 | else |
17c18f9e | 1248 | atomic64_inc(&alg->stats.kpp.generate_public_key_cnt); |
f7d76e05 CL |
1249 | crypto_alg_put(alg); |
1250 | } | |
1251 | EXPORT_SYMBOL_GPL(crypto_stats_kpp_generate_public_key); | |
1252 | ||
1253 | void crypto_stats_kpp_compute_shared_secret(struct crypto_alg *alg, int ret) | |
1254 | { | |
1255 | if (ret) | |
44f13133 | 1256 | atomic64_inc(&alg->stats.kpp.err_cnt); |
f7d76e05 | 1257 | else |
17c18f9e | 1258 | atomic64_inc(&alg->stats.kpp.compute_shared_secret_cnt); |
f7d76e05 CL |
1259 | crypto_alg_put(alg); |
1260 | } | |
1261 | EXPORT_SYMBOL_GPL(crypto_stats_kpp_compute_shared_secret); | |
1262 | ||
1263 | void crypto_stats_rng_seed(struct crypto_alg *alg, int ret) | |
1264 | { | |
1265 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) | |
44f13133 | 1266 | atomic64_inc(&alg->stats.rng.err_cnt); |
f7d76e05 | 1267 | else |
17c18f9e | 1268 | atomic64_inc(&alg->stats.rng.seed_cnt); |
f7d76e05 CL |
1269 | crypto_alg_put(alg); |
1270 | } | |
1271 | EXPORT_SYMBOL_GPL(crypto_stats_rng_seed); | |
1272 | ||
1273 | void crypto_stats_rng_generate(struct crypto_alg *alg, unsigned int dlen, | |
1274 | int ret) | |
1275 | { | |
1276 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1277 | atomic64_inc(&alg->stats.rng.err_cnt); |
f7d76e05 | 1278 | } else { |
17c18f9e CL |
1279 | atomic64_inc(&alg->stats.rng.generate_cnt); |
1280 | atomic64_add(dlen, &alg->stats.rng.generate_tlen); | |
f7d76e05 CL |
1281 | } |
1282 | crypto_alg_put(alg); | |
1283 | } | |
1284 | EXPORT_SYMBOL_GPL(crypto_stats_rng_generate); | |
1285 | ||
1286 | void crypto_stats_skcipher_encrypt(unsigned int cryptlen, int ret, | |
1287 | struct crypto_alg *alg) | |
1288 | { | |
1289 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1290 | atomic64_inc(&alg->stats.cipher.err_cnt); |
f7d76e05 | 1291 | } else { |
17c18f9e CL |
1292 | atomic64_inc(&alg->stats.cipher.encrypt_cnt); |
1293 | atomic64_add(cryptlen, &alg->stats.cipher.encrypt_tlen); | |
f7d76e05 CL |
1294 | } |
1295 | crypto_alg_put(alg); | |
1296 | } | |
1297 | EXPORT_SYMBOL_GPL(crypto_stats_skcipher_encrypt); | |
1298 | ||
1299 | void crypto_stats_skcipher_decrypt(unsigned int cryptlen, int ret, | |
1300 | struct crypto_alg *alg) | |
1301 | { | |
1302 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1303 | atomic64_inc(&alg->stats.cipher.err_cnt); |
f7d76e05 | 1304 | } else { |
17c18f9e CL |
1305 | atomic64_inc(&alg->stats.cipher.decrypt_cnt); |
1306 | atomic64_add(cryptlen, &alg->stats.cipher.decrypt_tlen); | |
f7d76e05 CL |
1307 | } |
1308 | crypto_alg_put(alg); | |
1309 | } | |
1310 | EXPORT_SYMBOL_GPL(crypto_stats_skcipher_decrypt); | |
1311 | #endif | |
1312 | ||
cce9e06d HX |
1313 | static int __init crypto_algapi_init(void) |
1314 | { | |
1315 | crypto_init_proc(); | |
1316 | return 0; | |
1317 | } | |
1318 | ||
1319 | static void __exit crypto_algapi_exit(void) | |
1320 | { | |
1321 | crypto_exit_proc(); | |
1322 | } | |
1323 | ||
1324 | module_init(crypto_algapi_init); | |
1325 | module_exit(crypto_algapi_exit); | |
1326 | ||
1327 | MODULE_LICENSE("GPL"); | |
1328 | MODULE_DESCRIPTION("Cryptographic algorithms API"); |