Commit | Line | Data |
---|---|---|
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 | ||
002c77a4 JW |
24 | static 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 | 31 | static 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 |
66 | static 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 |
76 | static 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 | ||
02244ba4 HX |
85 | /* |
86 | * This function adds a spawn to the list secondary_spawns which | |
87 | * will be used at the end of crypto_remove_spawns to unregister | |
88 | * instances, unless the spawn happens to be one that is depended | |
89 | * on by the new algorithm (nalg in crypto_remove_spawns). | |
90 | * | |
91 | * This function is also responsible for resurrecting any algorithms | |
92 | * in the dependency chain of nalg by unsetting n->dead. | |
93 | */ | |
2bf29016 HX |
94 | static struct list_head *crypto_more_spawns(struct crypto_alg *alg, |
95 | struct list_head *stack, | |
96 | struct list_head *top, | |
97 | struct list_head *secondary_spawns) | |
98 | { | |
99 | struct crypto_spawn *spawn, *n; | |
100 | ||
304e4818 GT |
101 | spawn = list_first_entry_or_null(stack, struct crypto_spawn, list); |
102 | if (!spawn) | |
2bf29016 HX |
103 | return NULL; |
104 | ||
4f87ee11 HX |
105 | n = list_prev_entry(spawn, list); |
106 | list_move(&spawn->list, secondary_spawns); | |
2bf29016 | 107 | |
4f87ee11 HX |
108 | if (list_is_last(&n->list, stack)) |
109 | return top; | |
2bf29016 | 110 | |
4f87ee11 HX |
111 | n = list_next_entry(n, list); |
112 | if (!spawn->dead) | |
113 | n->dead = false; | |
2bf29016 | 114 | |
4f87ee11 | 115 | return &n->inst->alg.cra_users; |
2bf29016 HX |
116 | } |
117 | ||
1f723710 HX |
118 | static void crypto_remove_instance(struct crypto_instance *inst, |
119 | struct list_head *list) | |
6bfd4809 | 120 | { |
a73e6996 | 121 | struct crypto_template *tmpl = inst->tmpl; |
6bfd4809 | 122 | |
a73e6996 HX |
123 | if (crypto_is_dead(&inst->alg)) |
124 | return; | |
6bfd4809 | 125 | |
a73e6996 | 126 | inst->alg.cra_flags |= CRYPTO_ALG_DEAD; |
38cb2419 HX |
127 | if (hlist_unhashed(&inst->list)) |
128 | return; | |
129 | ||
a73e6996 HX |
130 | if (!tmpl || !crypto_tmpl_get(tmpl)) |
131 | return; | |
132 | ||
a73e6996 HX |
133 | list_move(&inst->alg.cra_list, list); |
134 | hlist_del(&inst->list); | |
135 | inst->alg.cra_destroy = crypto_destroy_instance; | |
136 | ||
2bf29016 | 137 | BUG_ON(!list_empty(&inst->alg.cra_users)); |
a73e6996 HX |
138 | } |
139 | ||
02244ba4 HX |
140 | /* |
141 | * Given an algorithm alg, remove all algorithms that depend on it | |
142 | * through spawns. If nalg is not null, then exempt any algorithms | |
143 | * that is depended on by nalg. This is useful when nalg itself | |
144 | * depends on alg. | |
145 | */ | |
89b596ba SK |
146 | void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list, |
147 | struct crypto_alg *nalg) | |
a73e6996 | 148 | { |
2bf29016 | 149 | u32 new_type = (nalg ?: alg)->cra_flags; |
a73e6996 HX |
150 | struct crypto_spawn *spawn, *n; |
151 | LIST_HEAD(secondary_spawns); | |
2bf29016 HX |
152 | struct list_head *spawns; |
153 | LIST_HEAD(stack); | |
154 | LIST_HEAD(top); | |
6bfd4809 | 155 | |
2bf29016 | 156 | spawns = &alg->cra_users; |
a73e6996 HX |
157 | list_for_each_entry_safe(spawn, n, spawns, list) { |
158 | if ((spawn->alg->cra_flags ^ new_type) & spawn->mask) | |
6bfd4809 HX |
159 | continue; |
160 | ||
2bf29016 | 161 | list_move(&spawn->list, &top); |
a73e6996 | 162 | } |
6bfd4809 | 163 | |
02244ba4 HX |
164 | /* |
165 | * Perform a depth-first walk starting from alg through | |
166 | * the cra_users tree. The list stack records the path | |
167 | * from alg to the current spawn. | |
168 | */ | |
2bf29016 HX |
169 | spawns = ⊤ |
170 | do { | |
171 | while (!list_empty(spawns)) { | |
172 | struct crypto_instance *inst; | |
173 | ||
174 | spawn = list_first_entry(spawns, struct crypto_spawn, | |
175 | list); | |
176 | inst = spawn->inst; | |
177 | ||
178 | BUG_ON(&inst->alg == alg); | |
179 | ||
180 | list_move(&spawn->list, &stack); | |
181 | ||
182 | if (&inst->alg == nalg) | |
183 | break; | |
184 | ||
4f87ee11 | 185 | spawn->dead = true; |
2bf29016 | 186 | spawns = &inst->alg.cra_users; |
9a006742 EB |
187 | |
188 | /* | |
189 | * We may encounter an unregistered instance here, since | |
190 | * an instance's spawns are set up prior to the instance | |
191 | * being registered. An unregistered instance will have | |
192 | * NULL ->cra_users.next, since ->cra_users isn't | |
193 | * properly initialized until registration. But an | |
194 | * unregistered instance cannot have any users, so treat | |
195 | * it the same as ->cra_users being empty. | |
196 | */ | |
197 | if (spawns->next == NULL) | |
198 | break; | |
2bf29016 HX |
199 | } |
200 | } while ((spawns = crypto_more_spawns(alg, &stack, &top, | |
201 | &secondary_spawns))); | |
202 | ||
02244ba4 HX |
203 | /* |
204 | * Remove all instances that are marked as dead. Also | |
205 | * complete the resurrection of the others by moving them | |
206 | * back to the cra_users list. | |
207 | */ | |
2bf29016 | 208 | list_for_each_entry_safe(spawn, n, &secondary_spawns, list) { |
4f87ee11 | 209 | if (!spawn->dead) |
2bf29016 HX |
210 | list_move(&spawn->list, &spawn->alg->cra_users); |
211 | else | |
1f723710 | 212 | crypto_remove_instance(spawn->inst, list); |
6bfd4809 HX |
213 | } |
214 | } | |
89b596ba | 215 | EXPORT_SYMBOL_GPL(crypto_remove_spawns); |
6bfd4809 | 216 | |
73d3864a | 217 | static struct crypto_larval *__crypto_register_alg(struct crypto_alg *alg) |
4cc7720c HX |
218 | { |
219 | struct crypto_alg *q; | |
73d3864a | 220 | struct crypto_larval *larval; |
6bfd4809 HX |
221 | int ret = -EAGAIN; |
222 | ||
223 | if (crypto_is_dead(alg)) | |
73d3864a | 224 | goto err; |
6bfd4809 HX |
225 | |
226 | INIT_LIST_HEAD(&alg->cra_users); | |
227 | ||
73d3864a HX |
228 | /* No cheating! */ |
229 | alg->cra_flags &= ~CRYPTO_ALG_TESTED; | |
230 | ||
6bfd4809 | 231 | ret = -EEXIST; |
4cc7720c | 232 | |
cce9e06d | 233 | list_for_each_entry(q, &crypto_alg_list, cra_list) { |
4cc7720c | 234 | if (q == alg) |
73d3864a HX |
235 | goto err; |
236 | ||
b8e15992 HX |
237 | if (crypto_is_moribund(q)) |
238 | continue; | |
239 | ||
73d3864a HX |
240 | if (crypto_is_larval(q)) { |
241 | if (!strcmp(alg->cra_driver_name, q->cra_driver_name)) | |
242 | goto err; | |
243 | continue; | |
244 | } | |
245 | ||
246 | if (!strcmp(q->cra_driver_name, alg->cra_name) || | |
247 | !strcmp(q->cra_name, alg->cra_driver_name)) | |
248 | goto err; | |
249 | } | |
250 | ||
251 | larval = crypto_larval_alloc(alg->cra_name, | |
252 | alg->cra_flags | CRYPTO_ALG_TESTED, 0); | |
253 | if (IS_ERR(larval)) | |
254 | goto out; | |
255 | ||
256 | ret = -ENOENT; | |
257 | larval->adult = crypto_mod_get(alg); | |
258 | if (!larval->adult) | |
259 | goto free_larval; | |
260 | ||
ce8614a3 | 261 | refcount_set(&larval->alg.cra_refcnt, 1); |
73d3864a HX |
262 | memcpy(larval->alg.cra_driver_name, alg->cra_driver_name, |
263 | CRYPTO_MAX_ALG_NAME); | |
264 | larval->alg.cra_priority = alg->cra_priority; | |
265 | ||
266 | list_add(&alg->cra_list, &crypto_alg_list); | |
267 | list_add(&larval->alg.cra_list, &crypto_alg_list); | |
268 | ||
1f6669b9 | 269 | crypto_stats_init(alg); |
cac5818c | 270 | |
5357c6c4 | 271 | out: |
73d3864a HX |
272 | return larval; |
273 | ||
274 | free_larval: | |
275 | kfree(larval); | |
276 | err: | |
277 | larval = ERR_PTR(ret); | |
278 | goto out; | |
279 | } | |
280 | ||
281 | void crypto_alg_tested(const char *name, int err) | |
282 | { | |
283 | struct crypto_larval *test; | |
284 | struct crypto_alg *alg; | |
285 | struct crypto_alg *q; | |
286 | LIST_HEAD(list); | |
2bbb3375 | 287 | bool best; |
73d3864a HX |
288 | |
289 | down_write(&crypto_alg_sem); | |
290 | list_for_each_entry(q, &crypto_alg_list, cra_list) { | |
b8e15992 | 291 | if (crypto_is_moribund(q) || !crypto_is_larval(q)) |
73d3864a HX |
292 | continue; |
293 | ||
294 | test = (struct crypto_larval *)q; | |
295 | ||
296 | if (!strcmp(q->cra_driver_name, name)) | |
297 | goto found; | |
298 | } | |
299 | ||
c7235857 | 300 | pr_err("alg: Unexpected test result for %s: %d\n", name, err); |
73d3864a HX |
301 | goto unlock; |
302 | ||
303 | found: | |
b8e15992 | 304 | q->cra_flags |= CRYPTO_ALG_DEAD; |
73d3864a HX |
305 | alg = test->adult; |
306 | if (err || list_empty(&alg->cra_list)) | |
307 | goto complete; | |
308 | ||
309 | alg->cra_flags |= CRYPTO_ALG_TESTED; | |
310 | ||
2bbb3375 HX |
311 | /* Only satisfy larval waiters if we are the best. */ |
312 | best = true; | |
313 | list_for_each_entry(q, &crypto_alg_list, cra_list) { | |
314 | if (crypto_is_moribund(q) || !crypto_is_larval(q)) | |
315 | continue; | |
316 | ||
317 | if (strcmp(alg->cra_name, q->cra_name)) | |
318 | continue; | |
319 | ||
320 | if (q->cra_priority > alg->cra_priority) { | |
321 | best = false; | |
322 | break; | |
323 | } | |
324 | } | |
325 | ||
73d3864a HX |
326 | list_for_each_entry(q, &crypto_alg_list, cra_list) { |
327 | if (q == alg) | |
328 | continue; | |
6bfd4809 HX |
329 | |
330 | if (crypto_is_moribund(q)) | |
331 | continue; | |
332 | ||
333 | if (crypto_is_larval(q)) { | |
2825982d HX |
334 | struct crypto_larval *larval = (void *)q; |
335 | ||
d8058480 HX |
336 | /* |
337 | * Check to see if either our generic name or | |
338 | * specific name can satisfy the name requested | |
339 | * by the larval entry q. | |
340 | */ | |
6bfd4809 HX |
341 | if (strcmp(alg->cra_name, q->cra_name) && |
342 | strcmp(alg->cra_driver_name, q->cra_name)) | |
343 | continue; | |
344 | ||
345 | if (larval->adult) | |
346 | continue; | |
492e2b63 HX |
347 | if ((q->cra_flags ^ alg->cra_flags) & larval->mask) |
348 | continue; | |
6bfd4809 | 349 | |
2bbb3375 HX |
350 | if (best && crypto_mod_get(alg)) |
351 | larval->adult = alg; | |
352 | else | |
353 | larval->adult = ERR_PTR(-EAGAIN); | |
354 | ||
6bfd4809 | 355 | continue; |
2825982d | 356 | } |
6bfd4809 HX |
357 | |
358 | if (strcmp(alg->cra_name, q->cra_name)) | |
359 | continue; | |
360 | ||
361 | if (strcmp(alg->cra_driver_name, q->cra_driver_name) && | |
362 | q->cra_priority > alg->cra_priority) | |
363 | continue; | |
364 | ||
2bf29016 | 365 | crypto_remove_spawns(q, &list, alg); |
cce9e06d | 366 | } |
2825982d | 367 | |
73d3864a HX |
368 | complete: |
369 | complete_all(&test->completion); | |
2825982d | 370 | |
73d3864a HX |
371 | unlock: |
372 | up_write(&crypto_alg_sem); | |
373 | ||
374 | crypto_remove_final(&list); | |
cce9e06d | 375 | } |
73d3864a | 376 | EXPORT_SYMBOL_GPL(crypto_alg_tested); |
4cc7720c | 377 | |
22e5b20b | 378 | void crypto_remove_final(struct list_head *list) |
6bfd4809 HX |
379 | { |
380 | struct crypto_alg *alg; | |
381 | struct crypto_alg *n; | |
382 | ||
383 | list_for_each_entry_safe(alg, n, list, cra_list) { | |
384 | list_del_init(&alg->cra_list); | |
385 | crypto_alg_put(alg); | |
386 | } | |
387 | } | |
22e5b20b | 388 | EXPORT_SYMBOL_GPL(crypto_remove_final); |
6bfd4809 | 389 | |
73d3864a HX |
390 | static void crypto_wait_for_test(struct crypto_larval *larval) |
391 | { | |
392 | int err; | |
393 | ||
394 | err = crypto_probing_notify(CRYPTO_MSG_ALG_REGISTER, larval->adult); | |
395 | if (err != NOTIFY_STOP) { | |
396 | if (WARN_ON(err != NOTIFY_DONE)) | |
397 | goto out; | |
398 | crypto_alg_tested(larval->alg.cra_driver_name, 0); | |
399 | } | |
400 | ||
3fc89adb | 401 | err = wait_for_completion_killable(&larval->completion); |
73d3864a | 402 | WARN_ON(err); |
dd8b083f MP |
403 | if (!err) |
404 | crypto_probing_notify(CRYPTO_MSG_ALG_LOADED, larval); | |
73d3864a HX |
405 | |
406 | out: | |
407 | crypto_larval_kill(&larval->alg); | |
408 | } | |
409 | ||
4cc7720c HX |
410 | int crypto_register_alg(struct crypto_alg *alg) |
411 | { | |
73d3864a | 412 | struct crypto_larval *larval; |
4cc7720c HX |
413 | int err; |
414 | ||
d6040764 | 415 | alg->cra_flags &= ~CRYPTO_ALG_DEAD; |
4cc7720c HX |
416 | err = crypto_check_alg(alg); |
417 | if (err) | |
418 | return err; | |
419 | ||
420 | down_write(&crypto_alg_sem); | |
73d3864a | 421 | larval = __crypto_register_alg(alg); |
4cc7720c HX |
422 | up_write(&crypto_alg_sem); |
423 | ||
73d3864a HX |
424 | if (IS_ERR(larval)) |
425 | return PTR_ERR(larval); | |
426 | ||
427 | crypto_wait_for_test(larval); | |
428 | return 0; | |
4cc7720c | 429 | } |
cce9e06d HX |
430 | EXPORT_SYMBOL_GPL(crypto_register_alg); |
431 | ||
6bfd4809 HX |
432 | static int crypto_remove_alg(struct crypto_alg *alg, struct list_head *list) |
433 | { | |
434 | if (unlikely(list_empty(&alg->cra_list))) | |
435 | return -ENOENT; | |
436 | ||
437 | alg->cra_flags |= CRYPTO_ALG_DEAD; | |
438 | ||
6bfd4809 | 439 | list_del_init(&alg->cra_list); |
2bf29016 | 440 | crypto_remove_spawns(alg, list, NULL); |
6bfd4809 HX |
441 | |
442 | return 0; | |
443 | } | |
444 | ||
c6d633a9 | 445 | void crypto_unregister_alg(struct crypto_alg *alg) |
cce9e06d | 446 | { |
6bfd4809 HX |
447 | int ret; |
448 | LIST_HEAD(list); | |
5357c6c4 | 449 | |
cce9e06d | 450 | down_write(&crypto_alg_sem); |
6bfd4809 | 451 | ret = crypto_remove_alg(alg, &list); |
cce9e06d HX |
452 | up_write(&crypto_alg_sem); |
453 | ||
c6d633a9 EB |
454 | if (WARN(ret, "Algorithm %s is not registered", alg->cra_driver_name)) |
455 | return; | |
cce9e06d | 456 | |
ce8614a3 | 457 | BUG_ON(refcount_read(&alg->cra_refcnt) != 1); |
cce9e06d HX |
458 | if (alg->cra_destroy) |
459 | alg->cra_destroy(alg); | |
460 | ||
6bfd4809 | 461 | crypto_remove_final(&list); |
cce9e06d HX |
462 | } |
463 | EXPORT_SYMBOL_GPL(crypto_unregister_alg); | |
464 | ||
4b004346 MB |
465 | int crypto_register_algs(struct crypto_alg *algs, int count) |
466 | { | |
467 | int i, ret; | |
468 | ||
469 | for (i = 0; i < count; i++) { | |
470 | ret = crypto_register_alg(&algs[i]); | |
471 | if (ret) | |
472 | goto err; | |
473 | } | |
474 | ||
475 | return 0; | |
476 | ||
477 | err: | |
478 | for (--i; i >= 0; --i) | |
479 | crypto_unregister_alg(&algs[i]); | |
480 | ||
481 | return ret; | |
482 | } | |
483 | EXPORT_SYMBOL_GPL(crypto_register_algs); | |
484 | ||
c6d633a9 | 485 | void crypto_unregister_algs(struct crypto_alg *algs, int count) |
4b004346 | 486 | { |
c6d633a9 | 487 | int i; |
4b004346 | 488 | |
c6d633a9 EB |
489 | for (i = 0; i < count; i++) |
490 | crypto_unregister_alg(&algs[i]); | |
4b004346 MB |
491 | } |
492 | EXPORT_SYMBOL_GPL(crypto_unregister_algs); | |
493 | ||
4cc7720c HX |
494 | int crypto_register_template(struct crypto_template *tmpl) |
495 | { | |
496 | struct crypto_template *q; | |
497 | int err = -EEXIST; | |
498 | ||
499 | down_write(&crypto_alg_sem); | |
500 | ||
002c77a4 JW |
501 | crypto_check_module_sig(tmpl->module); |
502 | ||
4cc7720c HX |
503 | list_for_each_entry(q, &crypto_template_list, list) { |
504 | if (q == tmpl) | |
505 | goto out; | |
506 | } | |
507 | ||
508 | list_add(&tmpl->list, &crypto_template_list); | |
509 | err = 0; | |
510 | out: | |
511 | up_write(&crypto_alg_sem); | |
512 | return err; | |
513 | } | |
514 | EXPORT_SYMBOL_GPL(crypto_register_template); | |
515 | ||
9572442d XW |
516 | int crypto_register_templates(struct crypto_template *tmpls, int count) |
517 | { | |
518 | int i, err; | |
519 | ||
520 | for (i = 0; i < count; i++) { | |
521 | err = crypto_register_template(&tmpls[i]); | |
522 | if (err) | |
523 | goto out; | |
524 | } | |
525 | return 0; | |
526 | ||
527 | out: | |
528 | for (--i; i >= 0; --i) | |
529 | crypto_unregister_template(&tmpls[i]); | |
530 | return err; | |
531 | } | |
532 | EXPORT_SYMBOL_GPL(crypto_register_templates); | |
533 | ||
4cc7720c HX |
534 | void crypto_unregister_template(struct crypto_template *tmpl) |
535 | { | |
536 | struct crypto_instance *inst; | |
b67bfe0d | 537 | struct hlist_node *n; |
4cc7720c | 538 | struct hlist_head *list; |
6bfd4809 | 539 | LIST_HEAD(users); |
4cc7720c HX |
540 | |
541 | down_write(&crypto_alg_sem); | |
542 | ||
543 | BUG_ON(list_empty(&tmpl->list)); | |
544 | list_del_init(&tmpl->list); | |
545 | ||
546 | list = &tmpl->instances; | |
b67bfe0d | 547 | hlist_for_each_entry(inst, list, list) { |
6bfd4809 | 548 | int err = crypto_remove_alg(&inst->alg, &users); |
0efcb8d5 | 549 | |
6bfd4809 | 550 | BUG_ON(err); |
4cc7720c HX |
551 | } |
552 | ||
553 | up_write(&crypto_alg_sem); | |
554 | ||
b67bfe0d | 555 | hlist_for_each_entry_safe(inst, n, list, list) { |
ce8614a3 | 556 | BUG_ON(refcount_read(&inst->alg.cra_refcnt) != 1); |
319382a6 | 557 | crypto_free_instance(inst); |
4cc7720c | 558 | } |
6bfd4809 | 559 | crypto_remove_final(&users); |
4cc7720c HX |
560 | } |
561 | EXPORT_SYMBOL_GPL(crypto_unregister_template); | |
562 | ||
9572442d XW |
563 | void crypto_unregister_templates(struct crypto_template *tmpls, int count) |
564 | { | |
565 | int i; | |
566 | ||
567 | for (i = count - 1; i >= 0; --i) | |
568 | crypto_unregister_template(&tmpls[i]); | |
569 | } | |
570 | EXPORT_SYMBOL_GPL(crypto_unregister_templates); | |
571 | ||
4cc7720c HX |
572 | static struct crypto_template *__crypto_lookup_template(const char *name) |
573 | { | |
574 | struct crypto_template *q, *tmpl = NULL; | |
575 | ||
576 | down_read(&crypto_alg_sem); | |
577 | list_for_each_entry(q, &crypto_template_list, list) { | |
578 | if (strcmp(q->name, name)) | |
579 | continue; | |
580 | if (unlikely(!crypto_tmpl_get(q))) | |
581 | continue; | |
582 | ||
583 | tmpl = q; | |
584 | break; | |
585 | } | |
586 | up_read(&crypto_alg_sem); | |
587 | ||
588 | return tmpl; | |
589 | } | |
590 | ||
591 | struct crypto_template *crypto_lookup_template(const char *name) | |
592 | { | |
4943ba16 KC |
593 | return try_then_request_module(__crypto_lookup_template(name), |
594 | "crypto-%s", name); | |
4cc7720c HX |
595 | } |
596 | EXPORT_SYMBOL_GPL(crypto_lookup_template); | |
597 | ||
598 | int crypto_register_instance(struct crypto_template *tmpl, | |
599 | struct crypto_instance *inst) | |
600 | { | |
73d3864a HX |
601 | struct crypto_larval *larval; |
602 | int err; | |
4cc7720c | 603 | |
4cc7720c HX |
604 | err = crypto_check_alg(&inst->alg); |
605 | if (err) | |
9c521a20 SM |
606 | return err; |
607 | ||
4cc7720c | 608 | inst->alg.cra_module = tmpl->module; |
64a947b1 | 609 | inst->alg.cra_flags |= CRYPTO_ALG_INSTANCE; |
4cc7720c HX |
610 | |
611 | down_write(&crypto_alg_sem); | |
612 | ||
73d3864a HX |
613 | larval = __crypto_register_alg(&inst->alg); |
614 | if (IS_ERR(larval)) | |
4cc7720c HX |
615 | goto unlock; |
616 | ||
617 | hlist_add_head(&inst->list, &tmpl->instances); | |
618 | inst->tmpl = tmpl; | |
619 | ||
620 | unlock: | |
621 | up_write(&crypto_alg_sem); | |
622 | ||
73d3864a HX |
623 | err = PTR_ERR(larval); |
624 | if (IS_ERR(larval)) | |
625 | goto err; | |
626 | ||
627 | crypto_wait_for_test(larval); | |
628 | err = 0; | |
6bfd4809 | 629 | |
4cc7720c HX |
630 | err: |
631 | return err; | |
632 | } | |
633 | EXPORT_SYMBOL_GPL(crypto_register_instance); | |
ce3fd840 | 634 | |
c6d633a9 | 635 | void crypto_unregister_instance(struct crypto_instance *inst) |
ce3fd840 | 636 | { |
1f723710 | 637 | LIST_HEAD(list); |
ce3fd840 | 638 | |
ce3fd840 SK |
639 | down_write(&crypto_alg_sem); |
640 | ||
87b16756 | 641 | crypto_remove_spawns(&inst->alg, &list, NULL); |
1f723710 | 642 | crypto_remove_instance(inst, &list); |
ce3fd840 SK |
643 | |
644 | up_write(&crypto_alg_sem); | |
645 | ||
1f723710 | 646 | crypto_remove_final(&list); |
ce3fd840 SK |
647 | } |
648 | EXPORT_SYMBOL_GPL(crypto_unregister_instance); | |
4cc7720c | 649 | |
6bfd4809 | 650 | int crypto_init_spawn(struct crypto_spawn *spawn, struct crypto_alg *alg, |
a73e6996 | 651 | struct crypto_instance *inst, u32 mask) |
6bfd4809 HX |
652 | { |
653 | int err = -EAGAIN; | |
654 | ||
6b476662 EB |
655 | if (WARN_ON_ONCE(inst == NULL)) |
656 | return -EINVAL; | |
657 | ||
6bfd4809 | 658 | spawn->inst = inst; |
a73e6996 | 659 | spawn->mask = mask; |
6bfd4809 HX |
660 | |
661 | down_write(&crypto_alg_sem); | |
662 | if (!crypto_is_moribund(alg)) { | |
663 | list_add(&spawn->list, &alg->cra_users); | |
664 | spawn->alg = alg; | |
665 | err = 0; | |
666 | } | |
667 | up_write(&crypto_alg_sem); | |
668 | ||
669 | return err; | |
670 | } | |
671 | EXPORT_SYMBOL_GPL(crypto_init_spawn); | |
672 | ||
97eedce1 HX |
673 | int crypto_init_spawn2(struct crypto_spawn *spawn, struct crypto_alg *alg, |
674 | struct crypto_instance *inst, | |
675 | const struct crypto_type *frontend) | |
676 | { | |
677 | int err = -EINVAL; | |
678 | ||
c614e109 | 679 | if ((alg->cra_flags ^ frontend->type) & frontend->maskset) |
97eedce1 HX |
680 | goto out; |
681 | ||
682 | spawn->frontend = frontend; | |
683 | err = crypto_init_spawn(spawn, alg, inst, frontend->maskset); | |
684 | ||
685 | out: | |
686 | return err; | |
687 | } | |
688 | EXPORT_SYMBOL_GPL(crypto_init_spawn2); | |
689 | ||
d6ef2f19 HX |
690 | int crypto_grab_spawn(struct crypto_spawn *spawn, const char *name, |
691 | u32 type, u32 mask) | |
692 | { | |
693 | struct crypto_alg *alg; | |
694 | int err; | |
695 | ||
696 | alg = crypto_find_alg(name, spawn->frontend, type, mask); | |
697 | if (IS_ERR(alg)) | |
698 | return PTR_ERR(alg); | |
699 | ||
700 | err = crypto_init_spawn(spawn, alg, spawn->inst, mask); | |
701 | crypto_mod_put(alg); | |
702 | return err; | |
703 | } | |
704 | EXPORT_SYMBOL_GPL(crypto_grab_spawn); | |
705 | ||
6bfd4809 HX |
706 | void crypto_drop_spawn(struct crypto_spawn *spawn) |
707 | { | |
708 | down_write(&crypto_alg_sem); | |
4f87ee11 | 709 | if (!spawn->dead) |
7db3b61b | 710 | list_del(&spawn->list); |
6bfd4809 HX |
711 | up_write(&crypto_alg_sem); |
712 | } | |
713 | EXPORT_SYMBOL_GPL(crypto_drop_spawn); | |
714 | ||
97eedce1 | 715 | static struct crypto_alg *crypto_spawn_alg(struct crypto_spawn *spawn) |
6bfd4809 HX |
716 | { |
717 | struct crypto_alg *alg; | |
6bfd4809 HX |
718 | |
719 | down_read(&crypto_alg_sem); | |
720 | alg = spawn->alg; | |
4f87ee11 | 721 | if (!spawn->dead && !crypto_mod_get(alg)) { |
73669cc5 HX |
722 | alg->cra_flags |= CRYPTO_ALG_DYING; |
723 | alg = NULL; | |
6bfd4809 | 724 | } |
73669cc5 | 725 | up_read(&crypto_alg_sem); |
6bfd4809 | 726 | |
73669cc5 | 727 | return alg ?: ERR_PTR(-EAGAIN); |
97eedce1 HX |
728 | } |
729 | ||
730 | struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn, u32 type, | |
731 | u32 mask) | |
732 | { | |
733 | struct crypto_alg *alg; | |
734 | struct crypto_tfm *tfm; | |
735 | ||
736 | alg = crypto_spawn_alg(spawn); | |
737 | if (IS_ERR(alg)) | |
738 | return ERR_CAST(alg); | |
739 | ||
2e306ee0 HX |
740 | tfm = ERR_PTR(-EINVAL); |
741 | if (unlikely((alg->cra_flags ^ type) & mask)) | |
742 | goto out_put_alg; | |
743 | ||
27d2a330 | 744 | tfm = __crypto_alloc_tfm(alg, type, mask); |
6bfd4809 | 745 | if (IS_ERR(tfm)) |
2e306ee0 HX |
746 | goto out_put_alg; |
747 | ||
748 | return tfm; | |
6bfd4809 | 749 | |
2e306ee0 HX |
750 | out_put_alg: |
751 | crypto_mod_put(alg); | |
6bfd4809 HX |
752 | return tfm; |
753 | } | |
754 | EXPORT_SYMBOL_GPL(crypto_spawn_tfm); | |
755 | ||
97eedce1 HX |
756 | void *crypto_spawn_tfm2(struct crypto_spawn *spawn) |
757 | { | |
758 | struct crypto_alg *alg; | |
759 | struct crypto_tfm *tfm; | |
760 | ||
761 | alg = crypto_spawn_alg(spawn); | |
762 | if (IS_ERR(alg)) | |
763 | return ERR_CAST(alg); | |
764 | ||
765 | tfm = crypto_create_tfm(alg, spawn->frontend); | |
766 | if (IS_ERR(tfm)) | |
767 | goto out_put_alg; | |
768 | ||
769 | return tfm; | |
770 | ||
771 | out_put_alg: | |
772 | crypto_mod_put(alg); | |
773 | return tfm; | |
774 | } | |
775 | EXPORT_SYMBOL_GPL(crypto_spawn_tfm2); | |
776 | ||
2825982d HX |
777 | int crypto_register_notifier(struct notifier_block *nb) |
778 | { | |
779 | return blocking_notifier_chain_register(&crypto_chain, nb); | |
780 | } | |
781 | EXPORT_SYMBOL_GPL(crypto_register_notifier); | |
782 | ||
783 | int crypto_unregister_notifier(struct notifier_block *nb) | |
784 | { | |
785 | return blocking_notifier_chain_unregister(&crypto_chain, nb); | |
786 | } | |
787 | EXPORT_SYMBOL_GPL(crypto_unregister_notifier); | |
788 | ||
ebc610e5 | 789 | struct crypto_attr_type *crypto_get_attr_type(struct rtattr **tb) |
7fed0bf2 | 790 | { |
39e1ee01 | 791 | struct rtattr *rta = tb[0]; |
ebc610e5 HX |
792 | struct crypto_attr_type *algt; |
793 | ||
794 | if (!rta) | |
795 | return ERR_PTR(-ENOENT); | |
796 | if (RTA_PAYLOAD(rta) < sizeof(*algt)) | |
797 | return ERR_PTR(-EINVAL); | |
39e1ee01 HX |
798 | if (rta->rta_type != CRYPTOA_TYPE) |
799 | return ERR_PTR(-EINVAL); | |
ebc610e5 HX |
800 | |
801 | algt = RTA_DATA(rta); | |
802 | ||
803 | return algt; | |
804 | } | |
805 | EXPORT_SYMBOL_GPL(crypto_get_attr_type); | |
806 | ||
807 | int crypto_check_attr_type(struct rtattr **tb, u32 type) | |
808 | { | |
809 | struct crypto_attr_type *algt; | |
810 | ||
811 | algt = crypto_get_attr_type(tb); | |
812 | if (IS_ERR(algt)) | |
813 | return PTR_ERR(algt); | |
814 | ||
815 | if ((algt->type ^ type) & algt->mask) | |
816 | return -EINVAL; | |
817 | ||
818 | return 0; | |
819 | } | |
820 | EXPORT_SYMBOL_GPL(crypto_check_attr_type); | |
821 | ||
68b6c7d6 | 822 | const char *crypto_attr_alg_name(struct rtattr *rta) |
ebc610e5 | 823 | { |
7fed0bf2 HX |
824 | struct crypto_attr_alg *alga; |
825 | ||
ebc610e5 HX |
826 | if (!rta) |
827 | return ERR_PTR(-ENOENT); | |
828 | if (RTA_PAYLOAD(rta) < sizeof(*alga)) | |
7fed0bf2 | 829 | return ERR_PTR(-EINVAL); |
39e1ee01 HX |
830 | if (rta->rta_type != CRYPTOA_ALG) |
831 | return ERR_PTR(-EINVAL); | |
7fed0bf2 HX |
832 | |
833 | alga = RTA_DATA(rta); | |
834 | alga->name[CRYPTO_MAX_ALG_NAME - 1] = 0; | |
835 | ||
68b6c7d6 HX |
836 | return alga->name; |
837 | } | |
838 | EXPORT_SYMBOL_GPL(crypto_attr_alg_name); | |
839 | ||
d06854f0 HX |
840 | struct crypto_alg *crypto_attr_alg2(struct rtattr *rta, |
841 | const struct crypto_type *frontend, | |
842 | u32 type, u32 mask) | |
68b6c7d6 HX |
843 | { |
844 | const char *name; | |
68b6c7d6 HX |
845 | |
846 | name = crypto_attr_alg_name(rta); | |
68b6c7d6 | 847 | if (IS_ERR(name)) |
3e8afe35 | 848 | return ERR_CAST(name); |
68b6c7d6 | 849 | |
d06854f0 | 850 | return crypto_find_alg(name, frontend, type, mask); |
7fed0bf2 | 851 | } |
d06854f0 | 852 | EXPORT_SYMBOL_GPL(crypto_attr_alg2); |
3c09f17c HX |
853 | |
854 | int crypto_attr_u32(struct rtattr *rta, u32 *num) | |
855 | { | |
856 | struct crypto_attr_u32 *nu32; | |
857 | ||
858 | if (!rta) | |
859 | return -ENOENT; | |
860 | if (RTA_PAYLOAD(rta) < sizeof(*nu32)) | |
861 | return -EINVAL; | |
862 | if (rta->rta_type != CRYPTOA_U32) | |
863 | return -EINVAL; | |
864 | ||
865 | nu32 = RTA_DATA(rta); | |
866 | *num = nu32->num; | |
867 | ||
868 | return 0; | |
869 | } | |
870 | EXPORT_SYMBOL_GPL(crypto_attr_u32); | |
7fed0bf2 | 871 | |
32f27c74 HX |
872 | int crypto_inst_setname(struct crypto_instance *inst, const char *name, |
873 | struct crypto_alg *alg) | |
874 | { | |
875 | if (snprintf(inst->alg.cra_name, CRYPTO_MAX_ALG_NAME, "%s(%s)", name, | |
876 | alg->cra_name) >= CRYPTO_MAX_ALG_NAME) | |
877 | return -ENAMETOOLONG; | |
878 | ||
879 | if (snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s(%s)", | |
880 | name, alg->cra_driver_name) >= CRYPTO_MAX_ALG_NAME) | |
881 | return -ENAMETOOLONG; | |
882 | ||
883 | return 0; | |
884 | } | |
885 | EXPORT_SYMBOL_GPL(crypto_inst_setname); | |
886 | ||
14aa1a83 EB |
887 | void *crypto_alloc_instance(const char *name, struct crypto_alg *alg, |
888 | unsigned int head) | |
7fed0bf2 HX |
889 | { |
890 | struct crypto_instance *inst; | |
70ec7bb9 | 891 | char *p; |
7fed0bf2 HX |
892 | int err; |
893 | ||
70ec7bb9 HX |
894 | p = kzalloc(head + sizeof(*inst) + sizeof(struct crypto_spawn), |
895 | GFP_KERNEL); | |
896 | if (!p) | |
7fed0bf2 HX |
897 | return ERR_PTR(-ENOMEM); |
898 | ||
70ec7bb9 HX |
899 | inst = (void *)(p + head); |
900 | ||
32f27c74 HX |
901 | err = crypto_inst_setname(inst, name, alg); |
902 | if (err) | |
7fed0bf2 HX |
903 | goto err_free_inst; |
904 | ||
70ec7bb9 HX |
905 | return p; |
906 | ||
907 | err_free_inst: | |
908 | kfree(p); | |
909 | return ERR_PTR(err); | |
910 | } | |
7fed0bf2 HX |
911 | EXPORT_SYMBOL_GPL(crypto_alloc_instance); |
912 | ||
b5b7f088 HX |
913 | void crypto_init_queue(struct crypto_queue *queue, unsigned int max_qlen) |
914 | { | |
915 | INIT_LIST_HEAD(&queue->list); | |
916 | queue->backlog = &queue->list; | |
917 | queue->qlen = 0; | |
918 | queue->max_qlen = max_qlen; | |
919 | } | |
920 | EXPORT_SYMBOL_GPL(crypto_init_queue); | |
921 | ||
922 | int crypto_enqueue_request(struct crypto_queue *queue, | |
923 | struct crypto_async_request *request) | |
924 | { | |
925 | int err = -EINPROGRESS; | |
926 | ||
927 | if (unlikely(queue->qlen >= queue->max_qlen)) { | |
6b80ea38 GBY |
928 | if (!(request->flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) { |
929 | err = -ENOSPC; | |
b5b7f088 | 930 | goto out; |
6b80ea38 GBY |
931 | } |
932 | err = -EBUSY; | |
b5b7f088 HX |
933 | if (queue->backlog == &queue->list) |
934 | queue->backlog = &request->list; | |
935 | } | |
936 | ||
937 | queue->qlen++; | |
938 | list_add_tail(&request->list, &queue->list); | |
939 | ||
940 | out: | |
941 | return err; | |
942 | } | |
943 | EXPORT_SYMBOL_GPL(crypto_enqueue_request); | |
944 | ||
31d228cc | 945 | struct crypto_async_request *crypto_dequeue_request(struct crypto_queue *queue) |
b5b7f088 HX |
946 | { |
947 | struct list_head *request; | |
948 | ||
949 | if (unlikely(!queue->qlen)) | |
950 | return NULL; | |
951 | ||
952 | queue->qlen--; | |
953 | ||
954 | if (queue->backlog != &queue->list) | |
955 | queue->backlog = queue->backlog->next; | |
956 | ||
957 | request = queue->list.next; | |
958 | list_del(request); | |
959 | ||
31d228cc | 960 | return list_entry(request, struct crypto_async_request, list); |
b5b7f088 HX |
961 | } |
962 | EXPORT_SYMBOL_GPL(crypto_dequeue_request); | |
963 | ||
7613636d HX |
964 | static inline void crypto_inc_byte(u8 *a, unsigned int size) |
965 | { | |
966 | u8 *b = (a + size); | |
967 | u8 c; | |
968 | ||
969 | for (; size; size--) { | |
970 | c = *--b + 1; | |
971 | *b = c; | |
972 | if (c) | |
973 | break; | |
974 | } | |
975 | } | |
976 | ||
977 | void crypto_inc(u8 *a, unsigned int size) | |
978 | { | |
979 | __be32 *b = (__be32 *)(a + size); | |
980 | u32 c; | |
981 | ||
db91af0f | 982 | if (IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) || |
27c539ae | 983 | IS_ALIGNED((unsigned long)b, __alignof__(*b))) |
db91af0f AB |
984 | for (; size >= 4; size -= 4) { |
985 | c = be32_to_cpu(*--b) + 1; | |
986 | *b = cpu_to_be32(c); | |
27c539ae | 987 | if (likely(c)) |
db91af0f AB |
988 | return; |
989 | } | |
7613636d HX |
990 | |
991 | crypto_inc_byte(a, size); | |
992 | } | |
993 | EXPORT_SYMBOL_GPL(crypto_inc); | |
994 | ||
a7c391f0 | 995 | void __crypto_xor(u8 *dst, const u8 *src1, const u8 *src2, unsigned int len) |
7613636d | 996 | { |
db91af0f AB |
997 | int relalign = 0; |
998 | ||
999 | if (!IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)) { | |
1000 | int size = sizeof(unsigned long); | |
a7c391f0 AB |
1001 | int d = (((unsigned long)dst ^ (unsigned long)src1) | |
1002 | ((unsigned long)dst ^ (unsigned long)src2)) & | |
1003 | (size - 1); | |
db91af0f AB |
1004 | |
1005 | relalign = d ? 1 << __ffs(d) : size; | |
1006 | ||
1007 | /* | |
1008 | * If we care about alignment, process as many bytes as | |
1009 | * needed to advance dst and src to values whose alignments | |
1010 | * equal their relative alignment. This will allow us to | |
1011 | * process the remainder of the input using optimal strides. | |
1012 | */ | |
1013 | while (((unsigned long)dst & (relalign - 1)) && len > 0) { | |
a7c391f0 | 1014 | *dst++ = *src1++ ^ *src2++; |
db91af0f AB |
1015 | len--; |
1016 | } | |
1017 | } | |
7613636d | 1018 | |
db91af0f | 1019 | while (IS_ENABLED(CONFIG_64BIT) && len >= 8 && !(relalign & 7)) { |
a7c391f0 | 1020 | *(u64 *)dst = *(u64 *)src1 ^ *(u64 *)src2; |
db91af0f | 1021 | dst += 8; |
a7c391f0 AB |
1022 | src1 += 8; |
1023 | src2 += 8; | |
db91af0f AB |
1024 | len -= 8; |
1025 | } | |
7613636d | 1026 | |
db91af0f | 1027 | while (len >= 4 && !(relalign & 3)) { |
a7c391f0 | 1028 | *(u32 *)dst = *(u32 *)src1 ^ *(u32 *)src2; |
db91af0f | 1029 | dst += 4; |
a7c391f0 AB |
1030 | src1 += 4; |
1031 | src2 += 4; | |
db91af0f AB |
1032 | len -= 4; |
1033 | } | |
1034 | ||
1035 | while (len >= 2 && !(relalign & 1)) { | |
a7c391f0 | 1036 | *(u16 *)dst = *(u16 *)src1 ^ *(u16 *)src2; |
db91af0f | 1037 | dst += 2; |
a7c391f0 AB |
1038 | src1 += 2; |
1039 | src2 += 2; | |
db91af0f AB |
1040 | len -= 2; |
1041 | } | |
7613636d | 1042 | |
db91af0f | 1043 | while (len--) |
a7c391f0 | 1044 | *dst++ = *src1++ ^ *src2++; |
7613636d | 1045 | } |
db91af0f | 1046 | EXPORT_SYMBOL_GPL(__crypto_xor); |
7613636d | 1047 | |
38d21433 HX |
1048 | unsigned int crypto_alg_extsize(struct crypto_alg *alg) |
1049 | { | |
c2110f28 HX |
1050 | return alg->cra_ctxsize + |
1051 | (alg->cra_alignmask & ~(crypto_tfm_ctx_alignment() - 1)); | |
38d21433 HX |
1052 | } |
1053 | EXPORT_SYMBOL_GPL(crypto_alg_extsize); | |
1054 | ||
f2aefdab HX |
1055 | int crypto_type_has_alg(const char *name, const struct crypto_type *frontend, |
1056 | u32 type, u32 mask) | |
1057 | { | |
1058 | int ret = 0; | |
1059 | struct crypto_alg *alg = crypto_find_alg(name, frontend, type, mask); | |
1060 | ||
1061 | if (!IS_ERR(alg)) { | |
1062 | crypto_mod_put(alg); | |
1063 | ret = 1; | |
1064 | } | |
1065 | ||
1066 | return ret; | |
1067 | } | |
1068 | EXPORT_SYMBOL_GPL(crypto_type_has_alg); | |
1069 | ||
f7d76e05 | 1070 | #ifdef CONFIG_CRYPTO_STATS |
1f6669b9 CL |
1071 | void crypto_stats_init(struct crypto_alg *alg) |
1072 | { | |
1073 | memset(&alg->stats, 0, sizeof(alg->stats)); | |
1074 | } | |
1075 | EXPORT_SYMBOL_GPL(crypto_stats_init); | |
1076 | ||
f7d76e05 CL |
1077 | void crypto_stats_get(struct crypto_alg *alg) |
1078 | { | |
1079 | crypto_alg_get(alg); | |
1080 | } | |
1081 | EXPORT_SYMBOL_GPL(crypto_stats_get); | |
1082 | ||
f7d76e05 CL |
1083 | void crypto_stats_aead_encrypt(unsigned int cryptlen, struct crypto_alg *alg, |
1084 | int ret) | |
1085 | { | |
1086 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1087 | atomic64_inc(&alg->stats.aead.err_cnt); |
f7d76e05 | 1088 | } else { |
17c18f9e CL |
1089 | atomic64_inc(&alg->stats.aead.encrypt_cnt); |
1090 | atomic64_add(cryptlen, &alg->stats.aead.encrypt_tlen); | |
f7d76e05 CL |
1091 | } |
1092 | crypto_alg_put(alg); | |
1093 | } | |
1094 | EXPORT_SYMBOL_GPL(crypto_stats_aead_encrypt); | |
1095 | ||
1096 | void crypto_stats_aead_decrypt(unsigned int cryptlen, struct crypto_alg *alg, | |
1097 | int ret) | |
1098 | { | |
1099 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1100 | atomic64_inc(&alg->stats.aead.err_cnt); |
f7d76e05 | 1101 | } else { |
17c18f9e CL |
1102 | atomic64_inc(&alg->stats.aead.decrypt_cnt); |
1103 | atomic64_add(cryptlen, &alg->stats.aead.decrypt_tlen); | |
f7d76e05 CL |
1104 | } |
1105 | crypto_alg_put(alg); | |
1106 | } | |
1107 | EXPORT_SYMBOL_GPL(crypto_stats_aead_decrypt); | |
1108 | ||
1109 | void crypto_stats_akcipher_encrypt(unsigned int src_len, int ret, | |
1110 | struct crypto_alg *alg) | |
1111 | { | |
1112 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1113 | atomic64_inc(&alg->stats.akcipher.err_cnt); |
f7d76e05 | 1114 | } else { |
17c18f9e CL |
1115 | atomic64_inc(&alg->stats.akcipher.encrypt_cnt); |
1116 | atomic64_add(src_len, &alg->stats.akcipher.encrypt_tlen); | |
f7d76e05 CL |
1117 | } |
1118 | crypto_alg_put(alg); | |
1119 | } | |
1120 | EXPORT_SYMBOL_GPL(crypto_stats_akcipher_encrypt); | |
1121 | ||
1122 | void crypto_stats_akcipher_decrypt(unsigned int src_len, int ret, | |
1123 | struct crypto_alg *alg) | |
1124 | { | |
1125 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1126 | atomic64_inc(&alg->stats.akcipher.err_cnt); |
f7d76e05 | 1127 | } else { |
17c18f9e CL |
1128 | atomic64_inc(&alg->stats.akcipher.decrypt_cnt); |
1129 | atomic64_add(src_len, &alg->stats.akcipher.decrypt_tlen); | |
f7d76e05 CL |
1130 | } |
1131 | crypto_alg_put(alg); | |
1132 | } | |
1133 | EXPORT_SYMBOL_GPL(crypto_stats_akcipher_decrypt); | |
1134 | ||
1135 | void crypto_stats_akcipher_sign(int ret, 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 | 1140 | atomic64_inc(&alg->stats.akcipher.sign_cnt); |
f7d76e05 CL |
1141 | crypto_alg_put(alg); |
1142 | } | |
1143 | EXPORT_SYMBOL_GPL(crypto_stats_akcipher_sign); | |
1144 | ||
1145 | void crypto_stats_akcipher_verify(int ret, struct crypto_alg *alg) | |
1146 | { | |
1147 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) | |
44f13133 | 1148 | atomic64_inc(&alg->stats.akcipher.err_cnt); |
f7d76e05 | 1149 | else |
17c18f9e | 1150 | atomic64_inc(&alg->stats.akcipher.verify_cnt); |
f7d76e05 CL |
1151 | crypto_alg_put(alg); |
1152 | } | |
1153 | EXPORT_SYMBOL_GPL(crypto_stats_akcipher_verify); | |
1154 | ||
1155 | void crypto_stats_compress(unsigned int slen, int ret, struct crypto_alg *alg) | |
1156 | { | |
1157 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1158 | atomic64_inc(&alg->stats.compress.err_cnt); |
f7d76e05 | 1159 | } else { |
17c18f9e CL |
1160 | atomic64_inc(&alg->stats.compress.compress_cnt); |
1161 | atomic64_add(slen, &alg->stats.compress.compress_tlen); | |
f7d76e05 CL |
1162 | } |
1163 | crypto_alg_put(alg); | |
1164 | } | |
1165 | EXPORT_SYMBOL_GPL(crypto_stats_compress); | |
1166 | ||
1167 | void crypto_stats_decompress(unsigned int slen, int ret, struct crypto_alg *alg) | |
1168 | { | |
1169 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1170 | atomic64_inc(&alg->stats.compress.err_cnt); |
f7d76e05 | 1171 | } else { |
17c18f9e CL |
1172 | atomic64_inc(&alg->stats.compress.decompress_cnt); |
1173 | atomic64_add(slen, &alg->stats.compress.decompress_tlen); | |
f7d76e05 CL |
1174 | } |
1175 | crypto_alg_put(alg); | |
1176 | } | |
1177 | EXPORT_SYMBOL_GPL(crypto_stats_decompress); | |
1178 | ||
1179 | void crypto_stats_ahash_update(unsigned int nbytes, int ret, | |
1180 | struct crypto_alg *alg) | |
1181 | { | |
1182 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) | |
44f13133 | 1183 | atomic64_inc(&alg->stats.hash.err_cnt); |
f7d76e05 | 1184 | else |
17c18f9e | 1185 | atomic64_add(nbytes, &alg->stats.hash.hash_tlen); |
f7d76e05 CL |
1186 | crypto_alg_put(alg); |
1187 | } | |
1188 | EXPORT_SYMBOL_GPL(crypto_stats_ahash_update); | |
1189 | ||
1190 | void crypto_stats_ahash_final(unsigned int nbytes, int ret, | |
1191 | struct crypto_alg *alg) | |
1192 | { | |
1193 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1194 | atomic64_inc(&alg->stats.hash.err_cnt); |
f7d76e05 | 1195 | } else { |
17c18f9e CL |
1196 | atomic64_inc(&alg->stats.hash.hash_cnt); |
1197 | atomic64_add(nbytes, &alg->stats.hash.hash_tlen); | |
f7d76e05 CL |
1198 | } |
1199 | crypto_alg_put(alg); | |
1200 | } | |
1201 | EXPORT_SYMBOL_GPL(crypto_stats_ahash_final); | |
1202 | ||
1203 | void crypto_stats_kpp_set_secret(struct crypto_alg *alg, int ret) | |
1204 | { | |
1205 | if (ret) | |
44f13133 | 1206 | atomic64_inc(&alg->stats.kpp.err_cnt); |
f7d76e05 | 1207 | else |
17c18f9e | 1208 | atomic64_inc(&alg->stats.kpp.setsecret_cnt); |
f7d76e05 CL |
1209 | crypto_alg_put(alg); |
1210 | } | |
1211 | EXPORT_SYMBOL_GPL(crypto_stats_kpp_set_secret); | |
1212 | ||
1213 | void crypto_stats_kpp_generate_public_key(struct crypto_alg *alg, int ret) | |
1214 | { | |
1215 | if (ret) | |
44f13133 | 1216 | atomic64_inc(&alg->stats.kpp.err_cnt); |
f7d76e05 | 1217 | else |
17c18f9e | 1218 | atomic64_inc(&alg->stats.kpp.generate_public_key_cnt); |
f7d76e05 CL |
1219 | crypto_alg_put(alg); |
1220 | } | |
1221 | EXPORT_SYMBOL_GPL(crypto_stats_kpp_generate_public_key); | |
1222 | ||
1223 | void crypto_stats_kpp_compute_shared_secret(struct crypto_alg *alg, int ret) | |
1224 | { | |
1225 | if (ret) | |
44f13133 | 1226 | atomic64_inc(&alg->stats.kpp.err_cnt); |
f7d76e05 | 1227 | else |
17c18f9e | 1228 | atomic64_inc(&alg->stats.kpp.compute_shared_secret_cnt); |
f7d76e05 CL |
1229 | crypto_alg_put(alg); |
1230 | } | |
1231 | EXPORT_SYMBOL_GPL(crypto_stats_kpp_compute_shared_secret); | |
1232 | ||
1233 | void crypto_stats_rng_seed(struct crypto_alg *alg, int ret) | |
1234 | { | |
1235 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) | |
44f13133 | 1236 | atomic64_inc(&alg->stats.rng.err_cnt); |
f7d76e05 | 1237 | else |
17c18f9e | 1238 | atomic64_inc(&alg->stats.rng.seed_cnt); |
f7d76e05 CL |
1239 | crypto_alg_put(alg); |
1240 | } | |
1241 | EXPORT_SYMBOL_GPL(crypto_stats_rng_seed); | |
1242 | ||
1243 | void crypto_stats_rng_generate(struct crypto_alg *alg, unsigned int dlen, | |
1244 | int ret) | |
1245 | { | |
1246 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1247 | atomic64_inc(&alg->stats.rng.err_cnt); |
f7d76e05 | 1248 | } else { |
17c18f9e CL |
1249 | atomic64_inc(&alg->stats.rng.generate_cnt); |
1250 | atomic64_add(dlen, &alg->stats.rng.generate_tlen); | |
f7d76e05 CL |
1251 | } |
1252 | crypto_alg_put(alg); | |
1253 | } | |
1254 | EXPORT_SYMBOL_GPL(crypto_stats_rng_generate); | |
1255 | ||
1256 | void crypto_stats_skcipher_encrypt(unsigned int cryptlen, int ret, | |
1257 | struct crypto_alg *alg) | |
1258 | { | |
1259 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1260 | atomic64_inc(&alg->stats.cipher.err_cnt); |
f7d76e05 | 1261 | } else { |
17c18f9e CL |
1262 | atomic64_inc(&alg->stats.cipher.encrypt_cnt); |
1263 | atomic64_add(cryptlen, &alg->stats.cipher.encrypt_tlen); | |
f7d76e05 CL |
1264 | } |
1265 | crypto_alg_put(alg); | |
1266 | } | |
1267 | EXPORT_SYMBOL_GPL(crypto_stats_skcipher_encrypt); | |
1268 | ||
1269 | void crypto_stats_skcipher_decrypt(unsigned int cryptlen, int ret, | |
1270 | struct crypto_alg *alg) | |
1271 | { | |
1272 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1273 | atomic64_inc(&alg->stats.cipher.err_cnt); |
f7d76e05 | 1274 | } else { |
17c18f9e CL |
1275 | atomic64_inc(&alg->stats.cipher.decrypt_cnt); |
1276 | atomic64_add(cryptlen, &alg->stats.cipher.decrypt_tlen); | |
f7d76e05 CL |
1277 | } |
1278 | crypto_alg_put(alg); | |
1279 | } | |
1280 | EXPORT_SYMBOL_GPL(crypto_stats_skcipher_decrypt); | |
1281 | #endif | |
1282 | ||
cce9e06d HX |
1283 | static int __init crypto_algapi_init(void) |
1284 | { | |
1285 | crypto_init_proc(); | |
1286 | return 0; | |
1287 | } | |
1288 | ||
1289 | static void __exit crypto_algapi_exit(void) | |
1290 | { | |
1291 | crypto_exit_proc(); | |
1292 | } | |
1293 | ||
1294 | module_init(crypto_algapi_init); | |
1295 | module_exit(crypto_algapi_exit); | |
1296 | ||
1297 | MODULE_LICENSE("GPL"); | |
1298 | MODULE_DESCRIPTION("Cryptographic algorithms API"); |