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> |
8fc5f2ad | 9 | #include <crypto/internal/simd.h> |
6bfd4809 | 10 | #include <linux/err.h> |
cce9e06d | 11 | #include <linux/errno.h> |
3133d76f | 12 | #include <linux/fips.h> |
cce9e06d HX |
13 | #include <linux/init.h> |
14 | #include <linux/kernel.h> | |
4cc7720c | 15 | #include <linux/list.h> |
cce9e06d | 16 | #include <linux/module.h> |
7fed0bf2 | 17 | #include <linux/rtnetlink.h> |
5a0e3ad6 | 18 | #include <linux/slab.h> |
cce9e06d HX |
19 | #include <linux/string.h> |
20 | ||
21 | #include "internal.h" | |
22 | ||
4cc7720c HX |
23 | static LIST_HEAD(crypto_template_list); |
24 | ||
8fc5f2ad HX |
25 | #ifdef CONFIG_CRYPTO_MANAGER_EXTRA_TESTS |
26 | DEFINE_PER_CPU(bool, crypto_simd_disabled_for_test); | |
27 | EXPORT_PER_CPU_SYMBOL_GPL(crypto_simd_disabled_for_test); | |
28 | #endif | |
29 | ||
002c77a4 JW |
30 | static inline void crypto_check_module_sig(struct module *mod) |
31 | { | |
59afdc7b | 32 | if (fips_enabled && mod && !module_sig_ok(mod)) |
002c77a4 | 33 | panic("Module %s signature verification failed in FIPS mode\n", |
bd4a7c69 | 34 | module_name(mod)); |
002c77a4 JW |
35 | } |
36 | ||
4cc7720c | 37 | static int crypto_check_alg(struct crypto_alg *alg) |
cce9e06d | 38 | { |
002c77a4 JW |
39 | crypto_check_module_sig(alg->cra_module); |
40 | ||
177f87d0 EB |
41 | if (!alg->cra_name[0] || !alg->cra_driver_name[0]) |
42 | return -EINVAL; | |
43 | ||
cce9e06d HX |
44 | if (alg->cra_alignmask & (alg->cra_alignmask + 1)) |
45 | return -EINVAL; | |
46 | ||
a9f7f88a KC |
47 | /* General maximums for all algs. */ |
48 | if (alg->cra_alignmask > MAX_ALGAPI_ALIGNMASK) | |
cce9e06d HX |
49 | return -EINVAL; |
50 | ||
a9f7f88a KC |
51 | if (alg->cra_blocksize > MAX_ALGAPI_BLOCKSIZE) |
52 | return -EINVAL; | |
53 | ||
54 | /* Lower maximums for specific alg types. */ | |
13c935bb SM |
55 | if (!alg->cra_type && (alg->cra_flags & CRYPTO_ALG_TYPE_MASK) == |
56 | CRYPTO_ALG_TYPE_CIPHER) { | |
57 | if (alg->cra_alignmask > MAX_CIPHER_ALIGNMASK) | |
58 | return -EINVAL; | |
59 | ||
60 | if (alg->cra_blocksize > MAX_CIPHER_BLOCKSIZE) | |
61 | return -EINVAL; | |
62 | } | |
63 | ||
cce9e06d HX |
64 | if (alg->cra_priority < 0) |
65 | return -EINVAL; | |
cce9e06d | 66 | |
ce8614a3 | 67 | refcount_set(&alg->cra_refcnt, 1); |
e9b8e5be | 68 | |
177f87d0 | 69 | return 0; |
4cc7720c HX |
70 | } |
71 | ||
319382a6 HX |
72 | static void crypto_free_instance(struct crypto_instance *inst) |
73 | { | |
319382a6 HX |
74 | inst->alg.cra_type->free(inst); |
75 | } | |
76 | ||
6bfd4809 HX |
77 | static void crypto_destroy_instance(struct crypto_alg *alg) |
78 | { | |
79 | struct crypto_instance *inst = (void *)alg; | |
80 | struct crypto_template *tmpl = inst->tmpl; | |
81 | ||
319382a6 | 82 | crypto_free_instance(inst); |
6bfd4809 HX |
83 | crypto_tmpl_put(tmpl); |
84 | } | |
85 | ||
02244ba4 HX |
86 | /* |
87 | * This function adds a spawn to the list secondary_spawns which | |
88 | * will be used at the end of crypto_remove_spawns to unregister | |
89 | * instances, unless the spawn happens to be one that is depended | |
90 | * on by the new algorithm (nalg in crypto_remove_spawns). | |
91 | * | |
92 | * This function is also responsible for resurrecting any algorithms | |
93 | * in the dependency chain of nalg by unsetting n->dead. | |
94 | */ | |
2bf29016 HX |
95 | static struct list_head *crypto_more_spawns(struct crypto_alg *alg, |
96 | struct list_head *stack, | |
97 | struct list_head *top, | |
98 | struct list_head *secondary_spawns) | |
99 | { | |
100 | struct crypto_spawn *spawn, *n; | |
101 | ||
304e4818 GT |
102 | spawn = list_first_entry_or_null(stack, struct crypto_spawn, list); |
103 | if (!spawn) | |
2bf29016 HX |
104 | return NULL; |
105 | ||
4f87ee11 HX |
106 | n = list_prev_entry(spawn, list); |
107 | list_move(&spawn->list, secondary_spawns); | |
2bf29016 | 108 | |
4f87ee11 HX |
109 | if (list_is_last(&n->list, stack)) |
110 | return top; | |
2bf29016 | 111 | |
4f87ee11 HX |
112 | n = list_next_entry(n, list); |
113 | if (!spawn->dead) | |
114 | n->dead = false; | |
2bf29016 | 115 | |
4f87ee11 | 116 | return &n->inst->alg.cra_users; |
2bf29016 HX |
117 | } |
118 | ||
1f723710 HX |
119 | static void crypto_remove_instance(struct crypto_instance *inst, |
120 | struct list_head *list) | |
6bfd4809 | 121 | { |
a73e6996 | 122 | struct crypto_template *tmpl = inst->tmpl; |
6bfd4809 | 123 | |
a73e6996 HX |
124 | if (crypto_is_dead(&inst->alg)) |
125 | return; | |
6bfd4809 | 126 | |
a73e6996 | 127 | inst->alg.cra_flags |= CRYPTO_ALG_DEAD; |
38cb2419 | 128 | |
a73e6996 HX |
129 | if (!tmpl || !crypto_tmpl_get(tmpl)) |
130 | return; | |
131 | ||
a73e6996 HX |
132 | list_move(&inst->alg.cra_list, list); |
133 | hlist_del(&inst->list); | |
134 | inst->alg.cra_destroy = crypto_destroy_instance; | |
135 | ||
2bf29016 | 136 | BUG_ON(!list_empty(&inst->alg.cra_users)); |
a73e6996 HX |
137 | } |
138 | ||
02244ba4 HX |
139 | /* |
140 | * Given an algorithm alg, remove all algorithms that depend on it | |
141 | * through spawns. If nalg is not null, then exempt any algorithms | |
142 | * that is depended on by nalg. This is useful when nalg itself | |
143 | * depends on alg. | |
144 | */ | |
89b596ba SK |
145 | void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list, |
146 | struct crypto_alg *nalg) | |
a73e6996 | 147 | { |
2bf29016 | 148 | u32 new_type = (nalg ?: alg)->cra_flags; |
a73e6996 HX |
149 | struct crypto_spawn *spawn, *n; |
150 | LIST_HEAD(secondary_spawns); | |
2bf29016 HX |
151 | struct list_head *spawns; |
152 | LIST_HEAD(stack); | |
153 | LIST_HEAD(top); | |
6bfd4809 | 154 | |
2bf29016 | 155 | spawns = &alg->cra_users; |
a73e6996 HX |
156 | list_for_each_entry_safe(spawn, n, spawns, list) { |
157 | if ((spawn->alg->cra_flags ^ new_type) & spawn->mask) | |
6bfd4809 HX |
158 | continue; |
159 | ||
2bf29016 | 160 | list_move(&spawn->list, &top); |
a73e6996 | 161 | } |
6bfd4809 | 162 | |
02244ba4 HX |
163 | /* |
164 | * Perform a depth-first walk starting from alg through | |
165 | * the cra_users tree. The list stack records the path | |
166 | * from alg to the current spawn. | |
167 | */ | |
2bf29016 HX |
168 | spawns = ⊤ |
169 | do { | |
170 | while (!list_empty(spawns)) { | |
171 | struct crypto_instance *inst; | |
172 | ||
173 | spawn = list_first_entry(spawns, struct crypto_spawn, | |
174 | list); | |
175 | inst = spawn->inst; | |
176 | ||
2bf29016 | 177 | list_move(&spawn->list, &stack); |
5f567fff HX |
178 | spawn->dead = !spawn->registered || &inst->alg != nalg; |
179 | ||
180 | if (!spawn->registered) | |
181 | break; | |
182 | ||
183 | BUG_ON(&inst->alg == alg); | |
2bf29016 HX |
184 | |
185 | if (&inst->alg == nalg) | |
186 | break; | |
187 | ||
2bf29016 | 188 | spawns = &inst->alg.cra_users; |
9a006742 EB |
189 | |
190 | /* | |
5f567fff HX |
191 | * Even if spawn->registered is true, the |
192 | * instance itself may still be unregistered. | |
193 | * This is because it may have failed during | |
194 | * registration. Therefore we still need to | |
195 | * make the following test. | |
196 | * | |
9a006742 EB |
197 | * We may encounter an unregistered instance here, since |
198 | * an instance's spawns are set up prior to the instance | |
199 | * being registered. An unregistered instance will have | |
200 | * NULL ->cra_users.next, since ->cra_users isn't | |
201 | * properly initialized until registration. But an | |
202 | * unregistered instance cannot have any users, so treat | |
203 | * it the same as ->cra_users being empty. | |
204 | */ | |
205 | if (spawns->next == NULL) | |
206 | break; | |
2bf29016 HX |
207 | } |
208 | } while ((spawns = crypto_more_spawns(alg, &stack, &top, | |
209 | &secondary_spawns))); | |
210 | ||
02244ba4 HX |
211 | /* |
212 | * Remove all instances that are marked as dead. Also | |
213 | * complete the resurrection of the others by moving them | |
214 | * back to the cra_users list. | |
215 | */ | |
2bf29016 | 216 | list_for_each_entry_safe(spawn, n, &secondary_spawns, list) { |
4f87ee11 | 217 | if (!spawn->dead) |
2bf29016 | 218 | list_move(&spawn->list, &spawn->alg->cra_users); |
5f567fff | 219 | else if (spawn->registered) |
1f723710 | 220 | crypto_remove_instance(spawn->inst, list); |
6bfd4809 HX |
221 | } |
222 | } | |
89b596ba | 223 | EXPORT_SYMBOL_GPL(crypto_remove_spawns); |
6bfd4809 | 224 | |
a7008584 EB |
225 | static void crypto_alg_finish_registration(struct crypto_alg *alg, |
226 | bool fulfill_requests, | |
227 | struct list_head *algs_to_put) | |
228 | { | |
229 | struct crypto_alg *q; | |
230 | ||
231 | list_for_each_entry(q, &crypto_alg_list, cra_list) { | |
232 | if (q == alg) | |
233 | continue; | |
234 | ||
235 | if (crypto_is_moribund(q)) | |
236 | continue; | |
237 | ||
238 | if (crypto_is_larval(q)) { | |
239 | struct crypto_larval *larval = (void *)q; | |
240 | ||
241 | /* | |
242 | * Check to see if either our generic name or | |
243 | * specific name can satisfy the name requested | |
244 | * by the larval entry q. | |
245 | */ | |
246 | if (strcmp(alg->cra_name, q->cra_name) && | |
247 | strcmp(alg->cra_driver_name, q->cra_name)) | |
248 | continue; | |
249 | ||
250 | if (larval->adult) | |
251 | continue; | |
252 | if ((q->cra_flags ^ alg->cra_flags) & larval->mask) | |
253 | continue; | |
254 | ||
255 | if (fulfill_requests && crypto_mod_get(alg)) | |
256 | larval->adult = alg; | |
257 | else | |
258 | larval->adult = ERR_PTR(-EAGAIN); | |
259 | ||
260 | continue; | |
261 | } | |
262 | ||
263 | if (strcmp(alg->cra_name, q->cra_name)) | |
264 | continue; | |
265 | ||
266 | if (strcmp(alg->cra_driver_name, q->cra_driver_name) && | |
267 | q->cra_priority > alg->cra_priority) | |
268 | continue; | |
269 | ||
270 | crypto_remove_spawns(q, algs_to_put, alg); | |
271 | } | |
272 | ||
273 | crypto_notify(CRYPTO_MSG_ALG_LOADED, alg); | |
274 | } | |
275 | ||
cad439fc HX |
276 | static struct crypto_larval *crypto_alloc_test_larval(struct crypto_alg *alg) |
277 | { | |
278 | struct crypto_larval *larval; | |
279 | ||
a7008584 | 280 | if (!IS_ENABLED(CONFIG_CRYPTO_MANAGER) || |
9cadd73a EB |
281 | IS_ENABLED(CONFIG_CRYPTO_MANAGER_DISABLE_TESTS) || |
282 | (alg->cra_flags & CRYPTO_ALG_INTERNAL)) | |
a7008584 | 283 | return NULL; /* No self-test needed */ |
cad439fc HX |
284 | |
285 | larval = crypto_larval_alloc(alg->cra_name, | |
286 | alg->cra_flags | CRYPTO_ALG_TESTED, 0); | |
287 | if (IS_ERR(larval)) | |
288 | return larval; | |
289 | ||
290 | larval->adult = crypto_mod_get(alg); | |
291 | if (!larval->adult) { | |
292 | kfree(larval); | |
293 | return ERR_PTR(-ENOENT); | |
294 | } | |
295 | ||
296 | refcount_set(&larval->alg.cra_refcnt, 1); | |
297 | memcpy(larval->alg.cra_driver_name, alg->cra_driver_name, | |
298 | CRYPTO_MAX_ALG_NAME); | |
299 | larval->alg.cra_priority = alg->cra_priority; | |
300 | ||
301 | return larval; | |
302 | } | |
303 | ||
a7008584 EB |
304 | static struct crypto_larval * |
305 | __crypto_register_alg(struct crypto_alg *alg, struct list_head *algs_to_put) | |
4cc7720c HX |
306 | { |
307 | struct crypto_alg *q; | |
73d3864a | 308 | struct crypto_larval *larval; |
6bfd4809 HX |
309 | int ret = -EAGAIN; |
310 | ||
311 | if (crypto_is_dead(alg)) | |
73d3864a | 312 | goto err; |
6bfd4809 HX |
313 | |
314 | INIT_LIST_HEAD(&alg->cra_users); | |
315 | ||
316 | ret = -EEXIST; | |
4cc7720c | 317 | |
cce9e06d | 318 | list_for_each_entry(q, &crypto_alg_list, cra_list) { |
4cc7720c | 319 | if (q == alg) |
73d3864a HX |
320 | goto err; |
321 | ||
b8e15992 HX |
322 | if (crypto_is_moribund(q)) |
323 | continue; | |
324 | ||
73d3864a HX |
325 | if (crypto_is_larval(q)) { |
326 | if (!strcmp(alg->cra_driver_name, q->cra_driver_name)) | |
327 | goto err; | |
328 | continue; | |
329 | } | |
330 | ||
331 | if (!strcmp(q->cra_driver_name, alg->cra_name) || | |
332 | !strcmp(q->cra_name, alg->cra_driver_name)) | |
333 | goto err; | |
334 | } | |
335 | ||
cad439fc | 336 | larval = crypto_alloc_test_larval(alg); |
73d3864a HX |
337 | if (IS_ERR(larval)) |
338 | goto out; | |
339 | ||
73d3864a | 340 | list_add(&alg->cra_list, &crypto_alg_list); |
cad439fc | 341 | |
a7008584 EB |
342 | crypto_stats_init(alg); |
343 | ||
344 | if (larval) { | |
345 | /* No cheating! */ | |
346 | alg->cra_flags &= ~CRYPTO_ALG_TESTED; | |
347 | ||
cad439fc | 348 | list_add(&larval->alg.cra_list, &crypto_alg_list); |
a7008584 | 349 | } else { |
beaaaa37 | 350 | alg->cra_flags |= CRYPTO_ALG_TESTED; |
a7008584 EB |
351 | crypto_alg_finish_registration(alg, true, algs_to_put); |
352 | } | |
cac5818c | 353 | |
5357c6c4 | 354 | out: |
73d3864a HX |
355 | return larval; |
356 | ||
73d3864a HX |
357 | err: |
358 | larval = ERR_PTR(ret); | |
359 | goto out; | |
360 | } | |
361 | ||
362 | void crypto_alg_tested(const char *name, int err) | |
363 | { | |
364 | struct crypto_larval *test; | |
365 | struct crypto_alg *alg; | |
366 | struct crypto_alg *q; | |
367 | LIST_HEAD(list); | |
2bbb3375 | 368 | bool best; |
73d3864a HX |
369 | |
370 | down_write(&crypto_alg_sem); | |
371 | list_for_each_entry(q, &crypto_alg_list, cra_list) { | |
b8e15992 | 372 | if (crypto_is_moribund(q) || !crypto_is_larval(q)) |
73d3864a HX |
373 | continue; |
374 | ||
375 | test = (struct crypto_larval *)q; | |
376 | ||
377 | if (!strcmp(q->cra_driver_name, name)) | |
378 | goto found; | |
379 | } | |
380 | ||
c7235857 | 381 | pr_err("alg: Unexpected test result for %s: %d\n", name, err); |
73d3864a HX |
382 | goto unlock; |
383 | ||
384 | found: | |
b8e15992 | 385 | q->cra_flags |= CRYPTO_ALG_DEAD; |
73d3864a | 386 | alg = test->adult; |
d6097b8d NS |
387 | |
388 | if (list_empty(&alg->cra_list)) | |
73d3864a HX |
389 | goto complete; |
390 | ||
d6097b8d NS |
391 | if (err == -ECANCELED) |
392 | alg->cra_flags |= CRYPTO_ALG_FIPS_INTERNAL; | |
393 | else if (err) | |
73d3864a | 394 | goto complete; |
d6097b8d NS |
395 | else |
396 | alg->cra_flags &= ~CRYPTO_ALG_FIPS_INTERNAL; | |
73d3864a HX |
397 | |
398 | alg->cra_flags |= CRYPTO_ALG_TESTED; | |
399 | ||
a7008584 EB |
400 | /* |
401 | * If a higher-priority implementation of the same algorithm is | |
402 | * currently being tested, then don't fulfill request larvals. | |
403 | */ | |
2bbb3375 HX |
404 | best = true; |
405 | list_for_each_entry(q, &crypto_alg_list, cra_list) { | |
406 | if (crypto_is_moribund(q) || !crypto_is_larval(q)) | |
407 | continue; | |
408 | ||
409 | if (strcmp(alg->cra_name, q->cra_name)) | |
410 | continue; | |
411 | ||
412 | if (q->cra_priority > alg->cra_priority) { | |
413 | best = false; | |
414 | break; | |
415 | } | |
416 | } | |
417 | ||
a7008584 | 418 | crypto_alg_finish_registration(alg, best, &list); |
2825982d | 419 | |
73d3864a HX |
420 | complete: |
421 | complete_all(&test->completion); | |
2825982d | 422 | |
73d3864a HX |
423 | unlock: |
424 | up_write(&crypto_alg_sem); | |
425 | ||
426 | crypto_remove_final(&list); | |
cce9e06d | 427 | } |
73d3864a | 428 | EXPORT_SYMBOL_GPL(crypto_alg_tested); |
4cc7720c | 429 | |
22e5b20b | 430 | void crypto_remove_final(struct list_head *list) |
6bfd4809 HX |
431 | { |
432 | struct crypto_alg *alg; | |
433 | struct crypto_alg *n; | |
434 | ||
435 | list_for_each_entry_safe(alg, n, list, cra_list) { | |
436 | list_del_init(&alg->cra_list); | |
437 | crypto_alg_put(alg); | |
438 | } | |
439 | } | |
22e5b20b | 440 | EXPORT_SYMBOL_GPL(crypto_remove_final); |
6bfd4809 | 441 | |
4cc7720c HX |
442 | int crypto_register_alg(struct crypto_alg *alg) |
443 | { | |
73d3864a | 444 | struct crypto_larval *larval; |
a7008584 EB |
445 | LIST_HEAD(algs_to_put); |
446 | bool test_started = false; | |
4cc7720c HX |
447 | int err; |
448 | ||
d6040764 | 449 | alg->cra_flags &= ~CRYPTO_ALG_DEAD; |
4cc7720c HX |
450 | err = crypto_check_alg(alg); |
451 | if (err) | |
452 | return err; | |
453 | ||
454 | down_write(&crypto_alg_sem); | |
a7008584 EB |
455 | larval = __crypto_register_alg(alg, &algs_to_put); |
456 | if (!IS_ERR_OR_NULL(larval)) { | |
06bd9c96 | 457 | test_started = crypto_boot_test_finished(); |
cad439fc | 458 | larval->test_started = test_started; |
a7008584 | 459 | } |
4cc7720c HX |
460 | up_write(&crypto_alg_sem); |
461 | ||
a7008584 | 462 | if (IS_ERR(larval)) |
73d3864a | 463 | return PTR_ERR(larval); |
adad556e HX |
464 | if (test_started) |
465 | crypto_wait_for_test(larval); | |
a7008584 | 466 | crypto_remove_final(&algs_to_put); |
73d3864a | 467 | return 0; |
4cc7720c | 468 | } |
cce9e06d HX |
469 | EXPORT_SYMBOL_GPL(crypto_register_alg); |
470 | ||
6bfd4809 HX |
471 | static int crypto_remove_alg(struct crypto_alg *alg, struct list_head *list) |
472 | { | |
473 | if (unlikely(list_empty(&alg->cra_list))) | |
474 | return -ENOENT; | |
475 | ||
476 | alg->cra_flags |= CRYPTO_ALG_DEAD; | |
477 | ||
6bfd4809 | 478 | list_del_init(&alg->cra_list); |
2bf29016 | 479 | crypto_remove_spawns(alg, list, NULL); |
6bfd4809 HX |
480 | |
481 | return 0; | |
482 | } | |
483 | ||
c6d633a9 | 484 | void crypto_unregister_alg(struct crypto_alg *alg) |
cce9e06d | 485 | { |
6bfd4809 HX |
486 | int ret; |
487 | LIST_HEAD(list); | |
5357c6c4 | 488 | |
cce9e06d | 489 | down_write(&crypto_alg_sem); |
6bfd4809 | 490 | ret = crypto_remove_alg(alg, &list); |
cce9e06d HX |
491 | up_write(&crypto_alg_sem); |
492 | ||
c6d633a9 EB |
493 | if (WARN(ret, "Algorithm %s is not registered", alg->cra_driver_name)) |
494 | return; | |
cce9e06d | 495 | |
ce8614a3 | 496 | BUG_ON(refcount_read(&alg->cra_refcnt) != 1); |
cce9e06d HX |
497 | if (alg->cra_destroy) |
498 | alg->cra_destroy(alg); | |
499 | ||
6bfd4809 | 500 | crypto_remove_final(&list); |
cce9e06d HX |
501 | } |
502 | EXPORT_SYMBOL_GPL(crypto_unregister_alg); | |
503 | ||
4b004346 MB |
504 | int crypto_register_algs(struct crypto_alg *algs, int count) |
505 | { | |
506 | int i, ret; | |
507 | ||
508 | for (i = 0; i < count; i++) { | |
509 | ret = crypto_register_alg(&algs[i]); | |
510 | if (ret) | |
511 | goto err; | |
512 | } | |
513 | ||
514 | return 0; | |
515 | ||
516 | err: | |
517 | for (--i; i >= 0; --i) | |
518 | crypto_unregister_alg(&algs[i]); | |
519 | ||
520 | return ret; | |
521 | } | |
522 | EXPORT_SYMBOL_GPL(crypto_register_algs); | |
523 | ||
c6d633a9 | 524 | void crypto_unregister_algs(struct crypto_alg *algs, int count) |
4b004346 | 525 | { |
c6d633a9 | 526 | int i; |
4b004346 | 527 | |
c6d633a9 EB |
528 | for (i = 0; i < count; i++) |
529 | crypto_unregister_alg(&algs[i]); | |
4b004346 MB |
530 | } |
531 | EXPORT_SYMBOL_GPL(crypto_unregister_algs); | |
532 | ||
4cc7720c HX |
533 | int crypto_register_template(struct crypto_template *tmpl) |
534 | { | |
535 | struct crypto_template *q; | |
536 | int err = -EEXIST; | |
537 | ||
538 | down_write(&crypto_alg_sem); | |
539 | ||
002c77a4 JW |
540 | crypto_check_module_sig(tmpl->module); |
541 | ||
4cc7720c HX |
542 | list_for_each_entry(q, &crypto_template_list, list) { |
543 | if (q == tmpl) | |
544 | goto out; | |
545 | } | |
546 | ||
547 | list_add(&tmpl->list, &crypto_template_list); | |
548 | err = 0; | |
549 | out: | |
550 | up_write(&crypto_alg_sem); | |
551 | return err; | |
552 | } | |
553 | EXPORT_SYMBOL_GPL(crypto_register_template); | |
554 | ||
9572442d XW |
555 | int crypto_register_templates(struct crypto_template *tmpls, int count) |
556 | { | |
557 | int i, err; | |
558 | ||
559 | for (i = 0; i < count; i++) { | |
560 | err = crypto_register_template(&tmpls[i]); | |
561 | if (err) | |
562 | goto out; | |
563 | } | |
564 | return 0; | |
565 | ||
566 | out: | |
567 | for (--i; i >= 0; --i) | |
568 | crypto_unregister_template(&tmpls[i]); | |
569 | return err; | |
570 | } | |
571 | EXPORT_SYMBOL_GPL(crypto_register_templates); | |
572 | ||
4cc7720c HX |
573 | void crypto_unregister_template(struct crypto_template *tmpl) |
574 | { | |
575 | struct crypto_instance *inst; | |
b67bfe0d | 576 | struct hlist_node *n; |
4cc7720c | 577 | struct hlist_head *list; |
6bfd4809 | 578 | LIST_HEAD(users); |
4cc7720c HX |
579 | |
580 | down_write(&crypto_alg_sem); | |
581 | ||
582 | BUG_ON(list_empty(&tmpl->list)); | |
583 | list_del_init(&tmpl->list); | |
584 | ||
585 | list = &tmpl->instances; | |
b67bfe0d | 586 | hlist_for_each_entry(inst, list, list) { |
6bfd4809 | 587 | int err = crypto_remove_alg(&inst->alg, &users); |
0efcb8d5 | 588 | |
6bfd4809 | 589 | BUG_ON(err); |
4cc7720c HX |
590 | } |
591 | ||
592 | up_write(&crypto_alg_sem); | |
593 | ||
b67bfe0d | 594 | hlist_for_each_entry_safe(inst, n, list, list) { |
ce8614a3 | 595 | BUG_ON(refcount_read(&inst->alg.cra_refcnt) != 1); |
319382a6 | 596 | crypto_free_instance(inst); |
4cc7720c | 597 | } |
6bfd4809 | 598 | crypto_remove_final(&users); |
4cc7720c HX |
599 | } |
600 | EXPORT_SYMBOL_GPL(crypto_unregister_template); | |
601 | ||
9572442d XW |
602 | void crypto_unregister_templates(struct crypto_template *tmpls, int count) |
603 | { | |
604 | int i; | |
605 | ||
606 | for (i = count - 1; i >= 0; --i) | |
607 | crypto_unregister_template(&tmpls[i]); | |
608 | } | |
609 | EXPORT_SYMBOL_GPL(crypto_unregister_templates); | |
610 | ||
4cc7720c HX |
611 | static struct crypto_template *__crypto_lookup_template(const char *name) |
612 | { | |
613 | struct crypto_template *q, *tmpl = NULL; | |
614 | ||
615 | down_read(&crypto_alg_sem); | |
616 | list_for_each_entry(q, &crypto_template_list, list) { | |
617 | if (strcmp(q->name, name)) | |
618 | continue; | |
619 | if (unlikely(!crypto_tmpl_get(q))) | |
620 | continue; | |
621 | ||
622 | tmpl = q; | |
623 | break; | |
624 | } | |
625 | up_read(&crypto_alg_sem); | |
626 | ||
627 | return tmpl; | |
628 | } | |
629 | ||
630 | struct crypto_template *crypto_lookup_template(const char *name) | |
631 | { | |
4943ba16 KC |
632 | return try_then_request_module(__crypto_lookup_template(name), |
633 | "crypto-%s", name); | |
4cc7720c HX |
634 | } |
635 | EXPORT_SYMBOL_GPL(crypto_lookup_template); | |
636 | ||
637 | int crypto_register_instance(struct crypto_template *tmpl, | |
638 | struct crypto_instance *inst) | |
639 | { | |
73d3864a | 640 | struct crypto_larval *larval; |
5f567fff | 641 | struct crypto_spawn *spawn; |
d6097b8d | 642 | u32 fips_internal = 0; |
a7008584 | 643 | LIST_HEAD(algs_to_put); |
73d3864a | 644 | int err; |
4cc7720c | 645 | |
4cc7720c HX |
646 | err = crypto_check_alg(&inst->alg); |
647 | if (err) | |
9c521a20 SM |
648 | return err; |
649 | ||
4cc7720c | 650 | inst->alg.cra_module = tmpl->module; |
64a947b1 | 651 | inst->alg.cra_flags |= CRYPTO_ALG_INSTANCE; |
4cc7720c HX |
652 | |
653 | down_write(&crypto_alg_sem); | |
654 | ||
5f567fff HX |
655 | larval = ERR_PTR(-EAGAIN); |
656 | for (spawn = inst->spawns; spawn;) { | |
657 | struct crypto_spawn *next; | |
658 | ||
659 | if (spawn->dead) | |
660 | goto unlock; | |
661 | ||
662 | next = spawn->next; | |
663 | spawn->inst = inst; | |
664 | spawn->registered = true; | |
665 | ||
d6097b8d NS |
666 | fips_internal |= spawn->alg->cra_flags; |
667 | ||
aed11cf5 | 668 | crypto_mod_put(spawn->alg); |
5f567fff HX |
669 | |
670 | spawn = next; | |
671 | } | |
672 | ||
d6097b8d NS |
673 | inst->alg.cra_flags |= (fips_internal & CRYPTO_ALG_FIPS_INTERNAL); |
674 | ||
a7008584 | 675 | larval = __crypto_register_alg(&inst->alg, &algs_to_put); |
73d3864a | 676 | if (IS_ERR(larval)) |
4cc7720c | 677 | goto unlock; |
cad439fc HX |
678 | else if (larval) |
679 | larval->test_started = true; | |
adad556e | 680 | |
4cc7720c HX |
681 | hlist_add_head(&inst->list, &tmpl->instances); |
682 | inst->tmpl = tmpl; | |
683 | ||
684 | unlock: | |
685 | up_write(&crypto_alg_sem); | |
686 | ||
a7008584 EB |
687 | if (IS_ERR(larval)) |
688 | return PTR_ERR(larval); | |
689 | if (larval) | |
690 | crypto_wait_for_test(larval); | |
691 | crypto_remove_final(&algs_to_put); | |
692 | return 0; | |
4cc7720c HX |
693 | } |
694 | EXPORT_SYMBOL_GPL(crypto_register_instance); | |
ce3fd840 | 695 | |
c6d633a9 | 696 | void crypto_unregister_instance(struct crypto_instance *inst) |
ce3fd840 | 697 | { |
1f723710 | 698 | LIST_HEAD(list); |
ce3fd840 | 699 | |
ce3fd840 SK |
700 | down_write(&crypto_alg_sem); |
701 | ||
87b16756 | 702 | crypto_remove_spawns(&inst->alg, &list, NULL); |
1f723710 | 703 | crypto_remove_instance(inst, &list); |
ce3fd840 SK |
704 | |
705 | up_write(&crypto_alg_sem); | |
706 | ||
1f723710 | 707 | crypto_remove_final(&list); |
ce3fd840 SK |
708 | } |
709 | EXPORT_SYMBOL_GPL(crypto_unregister_instance); | |
4cc7720c | 710 | |
aed11cf5 EB |
711 | int crypto_grab_spawn(struct crypto_spawn *spawn, struct crypto_instance *inst, |
712 | const char *name, u32 type, u32 mask) | |
6bfd4809 | 713 | { |
aed11cf5 | 714 | struct crypto_alg *alg; |
6bfd4809 HX |
715 | int err = -EAGAIN; |
716 | ||
6b476662 EB |
717 | if (WARN_ON_ONCE(inst == NULL)) |
718 | return -EINVAL; | |
719 | ||
aed11cf5 EB |
720 | /* Allow the result of crypto_attr_alg_name() to be passed directly */ |
721 | if (IS_ERR(name)) | |
722 | return PTR_ERR(name); | |
5f567fff | 723 | |
d6097b8d NS |
724 | alg = crypto_find_alg(name, spawn->frontend, |
725 | type | CRYPTO_ALG_FIPS_INTERNAL, mask); | |
aed11cf5 EB |
726 | if (IS_ERR(alg)) |
727 | return PTR_ERR(alg); | |
6bfd4809 HX |
728 | |
729 | down_write(&crypto_alg_sem); | |
730 | if (!crypto_is_moribund(alg)) { | |
731 | list_add(&spawn->list, &alg->cra_users); | |
732 | spawn->alg = alg; | |
aed11cf5 EB |
733 | spawn->mask = mask; |
734 | spawn->next = inst->spawns; | |
735 | inst->spawns = spawn; | |
7bcb2c99 EB |
736 | inst->alg.cra_flags |= |
737 | (alg->cra_flags & CRYPTO_ALG_INHERITED_FLAGS); | |
6bfd4809 HX |
738 | err = 0; |
739 | } | |
740 | up_write(&crypto_alg_sem); | |
5f567fff HX |
741 | if (err) |
742 | crypto_mod_put(alg); | |
d6ef2f19 HX |
743 | return err; |
744 | } | |
745 | EXPORT_SYMBOL_GPL(crypto_grab_spawn); | |
746 | ||
6bfd4809 HX |
747 | void crypto_drop_spawn(struct crypto_spawn *spawn) |
748 | { | |
ff670627 EB |
749 | if (!spawn->alg) /* not yet initialized? */ |
750 | return; | |
751 | ||
6bfd4809 | 752 | down_write(&crypto_alg_sem); |
4f87ee11 | 753 | if (!spawn->dead) |
7db3b61b | 754 | list_del(&spawn->list); |
6bfd4809 | 755 | up_write(&crypto_alg_sem); |
5f567fff | 756 | |
aed11cf5 | 757 | if (!spawn->registered) |
5f567fff | 758 | crypto_mod_put(spawn->alg); |
6bfd4809 HX |
759 | } |
760 | EXPORT_SYMBOL_GPL(crypto_drop_spawn); | |
761 | ||
97eedce1 | 762 | static struct crypto_alg *crypto_spawn_alg(struct crypto_spawn *spawn) |
6bfd4809 | 763 | { |
6603523b HX |
764 | struct crypto_alg *alg = ERR_PTR(-EAGAIN); |
765 | struct crypto_alg *target; | |
766 | bool shoot = false; | |
6bfd4809 HX |
767 | |
768 | down_read(&crypto_alg_sem); | |
6603523b HX |
769 | if (!spawn->dead) { |
770 | alg = spawn->alg; | |
771 | if (!crypto_mod_get(alg)) { | |
772 | target = crypto_alg_get(alg); | |
773 | shoot = true; | |
774 | alg = ERR_PTR(-EAGAIN); | |
775 | } | |
6bfd4809 | 776 | } |
73669cc5 | 777 | up_read(&crypto_alg_sem); |
6bfd4809 | 778 | |
6603523b HX |
779 | if (shoot) { |
780 | crypto_shoot_alg(target); | |
781 | crypto_alg_put(target); | |
782 | } | |
783 | ||
784 | return alg; | |
97eedce1 HX |
785 | } |
786 | ||
787 | struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn, u32 type, | |
788 | u32 mask) | |
789 | { | |
790 | struct crypto_alg *alg; | |
791 | struct crypto_tfm *tfm; | |
792 | ||
793 | alg = crypto_spawn_alg(spawn); | |
794 | if (IS_ERR(alg)) | |
795 | return ERR_CAST(alg); | |
796 | ||
2e306ee0 HX |
797 | tfm = ERR_PTR(-EINVAL); |
798 | if (unlikely((alg->cra_flags ^ type) & mask)) | |
799 | goto out_put_alg; | |
800 | ||
27d2a330 | 801 | tfm = __crypto_alloc_tfm(alg, type, mask); |
6bfd4809 | 802 | if (IS_ERR(tfm)) |
2e306ee0 HX |
803 | goto out_put_alg; |
804 | ||
805 | return tfm; | |
6bfd4809 | 806 | |
2e306ee0 HX |
807 | out_put_alg: |
808 | crypto_mod_put(alg); | |
6bfd4809 HX |
809 | return tfm; |
810 | } | |
811 | EXPORT_SYMBOL_GPL(crypto_spawn_tfm); | |
812 | ||
97eedce1 HX |
813 | void *crypto_spawn_tfm2(struct crypto_spawn *spawn) |
814 | { | |
815 | struct crypto_alg *alg; | |
816 | struct crypto_tfm *tfm; | |
817 | ||
818 | alg = crypto_spawn_alg(spawn); | |
819 | if (IS_ERR(alg)) | |
820 | return ERR_CAST(alg); | |
821 | ||
822 | tfm = crypto_create_tfm(alg, spawn->frontend); | |
823 | if (IS_ERR(tfm)) | |
824 | goto out_put_alg; | |
825 | ||
826 | return tfm; | |
827 | ||
828 | out_put_alg: | |
829 | crypto_mod_put(alg); | |
830 | return tfm; | |
831 | } | |
832 | EXPORT_SYMBOL_GPL(crypto_spawn_tfm2); | |
833 | ||
2825982d HX |
834 | int crypto_register_notifier(struct notifier_block *nb) |
835 | { | |
836 | return blocking_notifier_chain_register(&crypto_chain, nb); | |
837 | } | |
838 | EXPORT_SYMBOL_GPL(crypto_register_notifier); | |
839 | ||
840 | int crypto_unregister_notifier(struct notifier_block *nb) | |
841 | { | |
842 | return blocking_notifier_chain_unregister(&crypto_chain, nb); | |
843 | } | |
844 | EXPORT_SYMBOL_GPL(crypto_unregister_notifier); | |
845 | ||
ebc610e5 | 846 | struct crypto_attr_type *crypto_get_attr_type(struct rtattr **tb) |
7fed0bf2 | 847 | { |
39e1ee01 | 848 | struct rtattr *rta = tb[0]; |
ebc610e5 HX |
849 | struct crypto_attr_type *algt; |
850 | ||
851 | if (!rta) | |
852 | return ERR_PTR(-ENOENT); | |
853 | if (RTA_PAYLOAD(rta) < sizeof(*algt)) | |
854 | return ERR_PTR(-EINVAL); | |
39e1ee01 HX |
855 | if (rta->rta_type != CRYPTOA_TYPE) |
856 | return ERR_PTR(-EINVAL); | |
ebc610e5 HX |
857 | |
858 | algt = RTA_DATA(rta); | |
859 | ||
860 | return algt; | |
861 | } | |
862 | EXPORT_SYMBOL_GPL(crypto_get_attr_type); | |
863 | ||
7bcb2c99 EB |
864 | /** |
865 | * crypto_check_attr_type() - check algorithm type and compute inherited mask | |
866 | * @tb: the template parameters | |
867 | * @type: the algorithm type the template would be instantiated as | |
868 | * @mask_ret: (output) the mask that should be passed to crypto_grab_*() | |
869 | * to restrict the flags of any inner algorithms | |
870 | * | |
871 | * Validate that the algorithm type the user requested is compatible with the | |
872 | * one the template would actually be instantiated as. E.g., if the user is | |
873 | * doing crypto_alloc_shash("cbc(aes)", ...), this would return an error because | |
874 | * the "cbc" template creates an "skcipher" algorithm, not an "shash" algorithm. | |
875 | * | |
876 | * Also compute the mask to use to restrict the flags of any inner algorithms. | |
877 | * | |
878 | * Return: 0 on success; -errno on failure | |
879 | */ | |
880 | int crypto_check_attr_type(struct rtattr **tb, u32 type, u32 *mask_ret) | |
ebc610e5 HX |
881 | { |
882 | struct crypto_attr_type *algt; | |
883 | ||
884 | algt = crypto_get_attr_type(tb); | |
885 | if (IS_ERR(algt)) | |
886 | return PTR_ERR(algt); | |
887 | ||
888 | if ((algt->type ^ type) & algt->mask) | |
889 | return -EINVAL; | |
890 | ||
7bcb2c99 | 891 | *mask_ret = crypto_algt_inherited_mask(algt); |
ebc610e5 HX |
892 | return 0; |
893 | } | |
894 | EXPORT_SYMBOL_GPL(crypto_check_attr_type); | |
895 | ||
68b6c7d6 | 896 | const char *crypto_attr_alg_name(struct rtattr *rta) |
ebc610e5 | 897 | { |
7fed0bf2 HX |
898 | struct crypto_attr_alg *alga; |
899 | ||
ebc610e5 HX |
900 | if (!rta) |
901 | return ERR_PTR(-ENOENT); | |
902 | if (RTA_PAYLOAD(rta) < sizeof(*alga)) | |
7fed0bf2 | 903 | return ERR_PTR(-EINVAL); |
39e1ee01 HX |
904 | if (rta->rta_type != CRYPTOA_ALG) |
905 | return ERR_PTR(-EINVAL); | |
7fed0bf2 HX |
906 | |
907 | alga = RTA_DATA(rta); | |
908 | alga->name[CRYPTO_MAX_ALG_NAME - 1] = 0; | |
909 | ||
68b6c7d6 HX |
910 | return alga->name; |
911 | } | |
912 | EXPORT_SYMBOL_GPL(crypto_attr_alg_name); | |
913 | ||
32f27c74 HX |
914 | int crypto_inst_setname(struct crypto_instance *inst, const char *name, |
915 | struct crypto_alg *alg) | |
916 | { | |
917 | if (snprintf(inst->alg.cra_name, CRYPTO_MAX_ALG_NAME, "%s(%s)", name, | |
918 | alg->cra_name) >= CRYPTO_MAX_ALG_NAME) | |
919 | return -ENAMETOOLONG; | |
920 | ||
921 | if (snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s(%s)", | |
922 | name, alg->cra_driver_name) >= CRYPTO_MAX_ALG_NAME) | |
923 | return -ENAMETOOLONG; | |
924 | ||
925 | return 0; | |
926 | } | |
927 | EXPORT_SYMBOL_GPL(crypto_inst_setname); | |
928 | ||
b5b7f088 HX |
929 | void crypto_init_queue(struct crypto_queue *queue, unsigned int max_qlen) |
930 | { | |
931 | INIT_LIST_HEAD(&queue->list); | |
932 | queue->backlog = &queue->list; | |
933 | queue->qlen = 0; | |
934 | queue->max_qlen = max_qlen; | |
935 | } | |
936 | EXPORT_SYMBOL_GPL(crypto_init_queue); | |
937 | ||
938 | int crypto_enqueue_request(struct crypto_queue *queue, | |
939 | struct crypto_async_request *request) | |
940 | { | |
941 | int err = -EINPROGRESS; | |
942 | ||
943 | if (unlikely(queue->qlen >= queue->max_qlen)) { | |
6b80ea38 GBY |
944 | if (!(request->flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) { |
945 | err = -ENOSPC; | |
b5b7f088 | 946 | goto out; |
6b80ea38 GBY |
947 | } |
948 | err = -EBUSY; | |
b5b7f088 HX |
949 | if (queue->backlog == &queue->list) |
950 | queue->backlog = &request->list; | |
951 | } | |
952 | ||
953 | queue->qlen++; | |
954 | list_add_tail(&request->list, &queue->list); | |
955 | ||
956 | out: | |
957 | return err; | |
958 | } | |
959 | EXPORT_SYMBOL_GPL(crypto_enqueue_request); | |
960 | ||
ec6e2bf3 IP |
961 | void crypto_enqueue_request_head(struct crypto_queue *queue, |
962 | struct crypto_async_request *request) | |
963 | { | |
964 | queue->qlen++; | |
965 | list_add(&request->list, &queue->list); | |
966 | } | |
967 | EXPORT_SYMBOL_GPL(crypto_enqueue_request_head); | |
968 | ||
31d228cc | 969 | struct crypto_async_request *crypto_dequeue_request(struct crypto_queue *queue) |
b5b7f088 HX |
970 | { |
971 | struct list_head *request; | |
972 | ||
973 | if (unlikely(!queue->qlen)) | |
974 | return NULL; | |
975 | ||
976 | queue->qlen--; | |
977 | ||
978 | if (queue->backlog != &queue->list) | |
979 | queue->backlog = queue->backlog->next; | |
980 | ||
981 | request = queue->list.next; | |
982 | list_del(request); | |
983 | ||
31d228cc | 984 | return list_entry(request, struct crypto_async_request, list); |
b5b7f088 HX |
985 | } |
986 | EXPORT_SYMBOL_GPL(crypto_dequeue_request); | |
987 | ||
7613636d HX |
988 | static inline void crypto_inc_byte(u8 *a, unsigned int size) |
989 | { | |
990 | u8 *b = (a + size); | |
991 | u8 c; | |
992 | ||
993 | for (; size; size--) { | |
994 | c = *--b + 1; | |
995 | *b = c; | |
996 | if (c) | |
997 | break; | |
998 | } | |
999 | } | |
1000 | ||
1001 | void crypto_inc(u8 *a, unsigned int size) | |
1002 | { | |
1003 | __be32 *b = (__be32 *)(a + size); | |
1004 | u32 c; | |
1005 | ||
db91af0f | 1006 | if (IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) || |
27c539ae | 1007 | IS_ALIGNED((unsigned long)b, __alignof__(*b))) |
db91af0f AB |
1008 | for (; size >= 4; size -= 4) { |
1009 | c = be32_to_cpu(*--b) + 1; | |
1010 | *b = cpu_to_be32(c); | |
27c539ae | 1011 | if (likely(c)) |
db91af0f AB |
1012 | return; |
1013 | } | |
7613636d HX |
1014 | |
1015 | crypto_inc_byte(a, size); | |
1016 | } | |
1017 | EXPORT_SYMBOL_GPL(crypto_inc); | |
1018 | ||
38d21433 HX |
1019 | unsigned int crypto_alg_extsize(struct crypto_alg *alg) |
1020 | { | |
c2110f28 HX |
1021 | return alg->cra_ctxsize + |
1022 | (alg->cra_alignmask & ~(crypto_tfm_ctx_alignment() - 1)); | |
38d21433 HX |
1023 | } |
1024 | EXPORT_SYMBOL_GPL(crypto_alg_extsize); | |
1025 | ||
f2aefdab HX |
1026 | int crypto_type_has_alg(const char *name, const struct crypto_type *frontend, |
1027 | u32 type, u32 mask) | |
1028 | { | |
1029 | int ret = 0; | |
1030 | struct crypto_alg *alg = crypto_find_alg(name, frontend, type, mask); | |
1031 | ||
1032 | if (!IS_ERR(alg)) { | |
1033 | crypto_mod_put(alg); | |
1034 | ret = 1; | |
1035 | } | |
1036 | ||
1037 | return ret; | |
1038 | } | |
1039 | EXPORT_SYMBOL_GPL(crypto_type_has_alg); | |
1040 | ||
f7d76e05 | 1041 | #ifdef CONFIG_CRYPTO_STATS |
1f6669b9 CL |
1042 | void crypto_stats_init(struct crypto_alg *alg) |
1043 | { | |
1044 | memset(&alg->stats, 0, sizeof(alg->stats)); | |
1045 | } | |
1046 | EXPORT_SYMBOL_GPL(crypto_stats_init); | |
1047 | ||
f7d76e05 CL |
1048 | void crypto_stats_get(struct crypto_alg *alg) |
1049 | { | |
1050 | crypto_alg_get(alg); | |
1051 | } | |
1052 | EXPORT_SYMBOL_GPL(crypto_stats_get); | |
1053 | ||
f7d76e05 CL |
1054 | void crypto_stats_aead_encrypt(unsigned int cryptlen, struct crypto_alg *alg, |
1055 | int ret) | |
1056 | { | |
1057 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1058 | atomic64_inc(&alg->stats.aead.err_cnt); |
f7d76e05 | 1059 | } else { |
17c18f9e CL |
1060 | atomic64_inc(&alg->stats.aead.encrypt_cnt); |
1061 | atomic64_add(cryptlen, &alg->stats.aead.encrypt_tlen); | |
f7d76e05 CL |
1062 | } |
1063 | crypto_alg_put(alg); | |
1064 | } | |
1065 | EXPORT_SYMBOL_GPL(crypto_stats_aead_encrypt); | |
1066 | ||
1067 | void crypto_stats_aead_decrypt(unsigned int cryptlen, struct crypto_alg *alg, | |
1068 | int ret) | |
1069 | { | |
1070 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1071 | atomic64_inc(&alg->stats.aead.err_cnt); |
f7d76e05 | 1072 | } else { |
17c18f9e CL |
1073 | atomic64_inc(&alg->stats.aead.decrypt_cnt); |
1074 | atomic64_add(cryptlen, &alg->stats.aead.decrypt_tlen); | |
f7d76e05 CL |
1075 | } |
1076 | crypto_alg_put(alg); | |
1077 | } | |
1078 | EXPORT_SYMBOL_GPL(crypto_stats_aead_decrypt); | |
1079 | ||
1080 | void crypto_stats_akcipher_encrypt(unsigned int src_len, int ret, | |
1081 | struct crypto_alg *alg) | |
1082 | { | |
1083 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1084 | atomic64_inc(&alg->stats.akcipher.err_cnt); |
f7d76e05 | 1085 | } else { |
17c18f9e CL |
1086 | atomic64_inc(&alg->stats.akcipher.encrypt_cnt); |
1087 | atomic64_add(src_len, &alg->stats.akcipher.encrypt_tlen); | |
f7d76e05 CL |
1088 | } |
1089 | crypto_alg_put(alg); | |
1090 | } | |
1091 | EXPORT_SYMBOL_GPL(crypto_stats_akcipher_encrypt); | |
1092 | ||
1093 | void crypto_stats_akcipher_decrypt(unsigned int src_len, int ret, | |
1094 | struct crypto_alg *alg) | |
1095 | { | |
1096 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1097 | atomic64_inc(&alg->stats.akcipher.err_cnt); |
f7d76e05 | 1098 | } else { |
17c18f9e CL |
1099 | atomic64_inc(&alg->stats.akcipher.decrypt_cnt); |
1100 | atomic64_add(src_len, &alg->stats.akcipher.decrypt_tlen); | |
f7d76e05 CL |
1101 | } |
1102 | crypto_alg_put(alg); | |
1103 | } | |
1104 | EXPORT_SYMBOL_GPL(crypto_stats_akcipher_decrypt); | |
1105 | ||
1106 | void crypto_stats_akcipher_sign(int ret, struct crypto_alg *alg) | |
1107 | { | |
1108 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) | |
44f13133 | 1109 | atomic64_inc(&alg->stats.akcipher.err_cnt); |
f7d76e05 | 1110 | else |
17c18f9e | 1111 | atomic64_inc(&alg->stats.akcipher.sign_cnt); |
f7d76e05 CL |
1112 | crypto_alg_put(alg); |
1113 | } | |
1114 | EXPORT_SYMBOL_GPL(crypto_stats_akcipher_sign); | |
1115 | ||
1116 | void crypto_stats_akcipher_verify(int ret, struct crypto_alg *alg) | |
1117 | { | |
1118 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) | |
44f13133 | 1119 | atomic64_inc(&alg->stats.akcipher.err_cnt); |
f7d76e05 | 1120 | else |
17c18f9e | 1121 | atomic64_inc(&alg->stats.akcipher.verify_cnt); |
f7d76e05 CL |
1122 | crypto_alg_put(alg); |
1123 | } | |
1124 | EXPORT_SYMBOL_GPL(crypto_stats_akcipher_verify); | |
1125 | ||
1126 | void crypto_stats_compress(unsigned int slen, int ret, struct crypto_alg *alg) | |
1127 | { | |
1128 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1129 | atomic64_inc(&alg->stats.compress.err_cnt); |
f7d76e05 | 1130 | } else { |
17c18f9e CL |
1131 | atomic64_inc(&alg->stats.compress.compress_cnt); |
1132 | atomic64_add(slen, &alg->stats.compress.compress_tlen); | |
f7d76e05 CL |
1133 | } |
1134 | crypto_alg_put(alg); | |
1135 | } | |
1136 | EXPORT_SYMBOL_GPL(crypto_stats_compress); | |
1137 | ||
1138 | void crypto_stats_decompress(unsigned int slen, int ret, struct crypto_alg *alg) | |
1139 | { | |
1140 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1141 | atomic64_inc(&alg->stats.compress.err_cnt); |
f7d76e05 | 1142 | } else { |
17c18f9e CL |
1143 | atomic64_inc(&alg->stats.compress.decompress_cnt); |
1144 | atomic64_add(slen, &alg->stats.compress.decompress_tlen); | |
f7d76e05 CL |
1145 | } |
1146 | crypto_alg_put(alg); | |
1147 | } | |
1148 | EXPORT_SYMBOL_GPL(crypto_stats_decompress); | |
1149 | ||
1150 | void crypto_stats_ahash_update(unsigned int nbytes, int ret, | |
1151 | struct crypto_alg *alg) | |
1152 | { | |
1153 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) | |
44f13133 | 1154 | atomic64_inc(&alg->stats.hash.err_cnt); |
f7d76e05 | 1155 | else |
17c18f9e | 1156 | atomic64_add(nbytes, &alg->stats.hash.hash_tlen); |
f7d76e05 CL |
1157 | crypto_alg_put(alg); |
1158 | } | |
1159 | EXPORT_SYMBOL_GPL(crypto_stats_ahash_update); | |
1160 | ||
1161 | void crypto_stats_ahash_final(unsigned int nbytes, int ret, | |
1162 | struct crypto_alg *alg) | |
1163 | { | |
1164 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1165 | atomic64_inc(&alg->stats.hash.err_cnt); |
f7d76e05 | 1166 | } else { |
17c18f9e CL |
1167 | atomic64_inc(&alg->stats.hash.hash_cnt); |
1168 | atomic64_add(nbytes, &alg->stats.hash.hash_tlen); | |
f7d76e05 CL |
1169 | } |
1170 | crypto_alg_put(alg); | |
1171 | } | |
1172 | EXPORT_SYMBOL_GPL(crypto_stats_ahash_final); | |
1173 | ||
1174 | void crypto_stats_kpp_set_secret(struct crypto_alg *alg, int ret) | |
1175 | { | |
1176 | if (ret) | |
44f13133 | 1177 | atomic64_inc(&alg->stats.kpp.err_cnt); |
f7d76e05 | 1178 | else |
17c18f9e | 1179 | atomic64_inc(&alg->stats.kpp.setsecret_cnt); |
f7d76e05 CL |
1180 | crypto_alg_put(alg); |
1181 | } | |
1182 | EXPORT_SYMBOL_GPL(crypto_stats_kpp_set_secret); | |
1183 | ||
1184 | void crypto_stats_kpp_generate_public_key(struct crypto_alg *alg, int ret) | |
1185 | { | |
1186 | if (ret) | |
44f13133 | 1187 | atomic64_inc(&alg->stats.kpp.err_cnt); |
f7d76e05 | 1188 | else |
17c18f9e | 1189 | atomic64_inc(&alg->stats.kpp.generate_public_key_cnt); |
f7d76e05 CL |
1190 | crypto_alg_put(alg); |
1191 | } | |
1192 | EXPORT_SYMBOL_GPL(crypto_stats_kpp_generate_public_key); | |
1193 | ||
1194 | void crypto_stats_kpp_compute_shared_secret(struct crypto_alg *alg, int ret) | |
1195 | { | |
1196 | if (ret) | |
44f13133 | 1197 | atomic64_inc(&alg->stats.kpp.err_cnt); |
f7d76e05 | 1198 | else |
17c18f9e | 1199 | atomic64_inc(&alg->stats.kpp.compute_shared_secret_cnt); |
f7d76e05 CL |
1200 | crypto_alg_put(alg); |
1201 | } | |
1202 | EXPORT_SYMBOL_GPL(crypto_stats_kpp_compute_shared_secret); | |
1203 | ||
1204 | void crypto_stats_rng_seed(struct crypto_alg *alg, int ret) | |
1205 | { | |
1206 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) | |
44f13133 | 1207 | atomic64_inc(&alg->stats.rng.err_cnt); |
f7d76e05 | 1208 | else |
17c18f9e | 1209 | atomic64_inc(&alg->stats.rng.seed_cnt); |
f7d76e05 CL |
1210 | crypto_alg_put(alg); |
1211 | } | |
1212 | EXPORT_SYMBOL_GPL(crypto_stats_rng_seed); | |
1213 | ||
1214 | void crypto_stats_rng_generate(struct crypto_alg *alg, unsigned int dlen, | |
1215 | int ret) | |
1216 | { | |
1217 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1218 | atomic64_inc(&alg->stats.rng.err_cnt); |
f7d76e05 | 1219 | } else { |
17c18f9e CL |
1220 | atomic64_inc(&alg->stats.rng.generate_cnt); |
1221 | atomic64_add(dlen, &alg->stats.rng.generate_tlen); | |
f7d76e05 CL |
1222 | } |
1223 | crypto_alg_put(alg); | |
1224 | } | |
1225 | EXPORT_SYMBOL_GPL(crypto_stats_rng_generate); | |
1226 | ||
1227 | void crypto_stats_skcipher_encrypt(unsigned int cryptlen, int ret, | |
1228 | struct crypto_alg *alg) | |
1229 | { | |
1230 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1231 | atomic64_inc(&alg->stats.cipher.err_cnt); |
f7d76e05 | 1232 | } else { |
17c18f9e CL |
1233 | atomic64_inc(&alg->stats.cipher.encrypt_cnt); |
1234 | atomic64_add(cryptlen, &alg->stats.cipher.encrypt_tlen); | |
f7d76e05 CL |
1235 | } |
1236 | crypto_alg_put(alg); | |
1237 | } | |
1238 | EXPORT_SYMBOL_GPL(crypto_stats_skcipher_encrypt); | |
1239 | ||
1240 | void crypto_stats_skcipher_decrypt(unsigned int cryptlen, int ret, | |
1241 | struct crypto_alg *alg) | |
1242 | { | |
1243 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1244 | atomic64_inc(&alg->stats.cipher.err_cnt); |
f7d76e05 | 1245 | } else { |
17c18f9e CL |
1246 | atomic64_inc(&alg->stats.cipher.decrypt_cnt); |
1247 | atomic64_add(cryptlen, &alg->stats.cipher.decrypt_tlen); | |
f7d76e05 CL |
1248 | } |
1249 | crypto_alg_put(alg); | |
1250 | } | |
1251 | EXPORT_SYMBOL_GPL(crypto_stats_skcipher_decrypt); | |
1252 | #endif | |
1253 | ||
adad556e HX |
1254 | static void __init crypto_start_tests(void) |
1255 | { | |
06bd9c96 EB |
1256 | if (IS_ENABLED(CONFIG_CRYPTO_MANAGER_DISABLE_TESTS)) |
1257 | return; | |
1258 | ||
adad556e HX |
1259 | for (;;) { |
1260 | struct crypto_larval *larval = NULL; | |
1261 | struct crypto_alg *q; | |
1262 | ||
1263 | down_write(&crypto_alg_sem); | |
1264 | ||
1265 | list_for_each_entry(q, &crypto_alg_list, cra_list) { | |
1266 | struct crypto_larval *l; | |
1267 | ||
1268 | if (!crypto_is_larval(q)) | |
1269 | continue; | |
1270 | ||
1271 | l = (void *)q; | |
1272 | ||
1273 | if (!crypto_is_test_larval(l)) | |
1274 | continue; | |
1275 | ||
1276 | if (l->test_started) | |
1277 | continue; | |
1278 | ||
1279 | l->test_started = true; | |
1280 | larval = l; | |
1281 | break; | |
1282 | } | |
1283 | ||
1284 | up_write(&crypto_alg_sem); | |
1285 | ||
1286 | if (!larval) | |
1287 | break; | |
1288 | ||
1289 | crypto_wait_for_test(larval); | |
1290 | } | |
1291 | ||
06bd9c96 | 1292 | set_crypto_boot_test_finished(); |
adad556e HX |
1293 | } |
1294 | ||
cce9e06d HX |
1295 | static int __init crypto_algapi_init(void) |
1296 | { | |
1297 | crypto_init_proc(); | |
adad556e | 1298 | crypto_start_tests(); |
cce9e06d HX |
1299 | return 0; |
1300 | } | |
1301 | ||
1302 | static void __exit crypto_algapi_exit(void) | |
1303 | { | |
1304 | crypto_exit_proc(); | |
1305 | } | |
1306 | ||
adad556e HX |
1307 | /* |
1308 | * We run this at late_initcall so that all the built-in algorithms | |
1309 | * have had a chance to register themselves first. | |
1310 | */ | |
1311 | late_initcall(crypto_algapi_init); | |
cce9e06d HX |
1312 | module_exit(crypto_algapi_exit); |
1313 | ||
1314 | MODULE_LICENSE("GPL"); | |
1315 | MODULE_DESCRIPTION("Cryptographic algorithms API"); | |
c6ce9c58 | 1316 | MODULE_SOFTDEP("pre: cryptomgr"); |