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 | { | |
319382a6 HX |
68 | inst->alg.cra_type->free(inst); |
69 | } | |
70 | ||
6bfd4809 HX |
71 | static void crypto_destroy_instance(struct crypto_alg *alg) |
72 | { | |
73 | struct crypto_instance *inst = (void *)alg; | |
74 | struct crypto_template *tmpl = inst->tmpl; | |
75 | ||
319382a6 | 76 | crypto_free_instance(inst); |
6bfd4809 HX |
77 | crypto_tmpl_put(tmpl); |
78 | } | |
79 | ||
02244ba4 HX |
80 | /* |
81 | * This function adds a spawn to the list secondary_spawns which | |
82 | * will be used at the end of crypto_remove_spawns to unregister | |
83 | * instances, unless the spawn happens to be one that is depended | |
84 | * on by the new algorithm (nalg in crypto_remove_spawns). | |
85 | * | |
86 | * This function is also responsible for resurrecting any algorithms | |
87 | * in the dependency chain of nalg by unsetting n->dead. | |
88 | */ | |
2bf29016 HX |
89 | static struct list_head *crypto_more_spawns(struct crypto_alg *alg, |
90 | struct list_head *stack, | |
91 | struct list_head *top, | |
92 | struct list_head *secondary_spawns) | |
93 | { | |
94 | struct crypto_spawn *spawn, *n; | |
95 | ||
304e4818 GT |
96 | spawn = list_first_entry_or_null(stack, struct crypto_spawn, list); |
97 | if (!spawn) | |
2bf29016 HX |
98 | return NULL; |
99 | ||
4f87ee11 HX |
100 | n = list_prev_entry(spawn, list); |
101 | list_move(&spawn->list, secondary_spawns); | |
2bf29016 | 102 | |
4f87ee11 HX |
103 | if (list_is_last(&n->list, stack)) |
104 | return top; | |
2bf29016 | 105 | |
4f87ee11 HX |
106 | n = list_next_entry(n, list); |
107 | if (!spawn->dead) | |
108 | n->dead = false; | |
2bf29016 | 109 | |
4f87ee11 | 110 | return &n->inst->alg.cra_users; |
2bf29016 HX |
111 | } |
112 | ||
1f723710 HX |
113 | static void crypto_remove_instance(struct crypto_instance *inst, |
114 | struct list_head *list) | |
6bfd4809 | 115 | { |
a73e6996 | 116 | struct crypto_template *tmpl = inst->tmpl; |
6bfd4809 | 117 | |
a73e6996 HX |
118 | if (crypto_is_dead(&inst->alg)) |
119 | return; | |
6bfd4809 | 120 | |
a73e6996 | 121 | inst->alg.cra_flags |= CRYPTO_ALG_DEAD; |
38cb2419 | 122 | |
a73e6996 HX |
123 | if (!tmpl || !crypto_tmpl_get(tmpl)) |
124 | return; | |
125 | ||
a73e6996 HX |
126 | list_move(&inst->alg.cra_list, list); |
127 | hlist_del(&inst->list); | |
128 | inst->alg.cra_destroy = crypto_destroy_instance; | |
129 | ||
2bf29016 | 130 | BUG_ON(!list_empty(&inst->alg.cra_users)); |
a73e6996 HX |
131 | } |
132 | ||
02244ba4 HX |
133 | /* |
134 | * Given an algorithm alg, remove all algorithms that depend on it | |
135 | * through spawns. If nalg is not null, then exempt any algorithms | |
136 | * that is depended on by nalg. This is useful when nalg itself | |
137 | * depends on alg. | |
138 | */ | |
89b596ba SK |
139 | void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list, |
140 | struct crypto_alg *nalg) | |
a73e6996 | 141 | { |
2bf29016 | 142 | u32 new_type = (nalg ?: alg)->cra_flags; |
a73e6996 HX |
143 | struct crypto_spawn *spawn, *n; |
144 | LIST_HEAD(secondary_spawns); | |
2bf29016 HX |
145 | struct list_head *spawns; |
146 | LIST_HEAD(stack); | |
147 | LIST_HEAD(top); | |
6bfd4809 | 148 | |
2bf29016 | 149 | spawns = &alg->cra_users; |
a73e6996 HX |
150 | list_for_each_entry_safe(spawn, n, spawns, list) { |
151 | if ((spawn->alg->cra_flags ^ new_type) & spawn->mask) | |
6bfd4809 HX |
152 | continue; |
153 | ||
2bf29016 | 154 | list_move(&spawn->list, &top); |
a73e6996 | 155 | } |
6bfd4809 | 156 | |
02244ba4 HX |
157 | /* |
158 | * Perform a depth-first walk starting from alg through | |
159 | * the cra_users tree. The list stack records the path | |
160 | * from alg to the current spawn. | |
161 | */ | |
2bf29016 HX |
162 | spawns = ⊤ |
163 | do { | |
164 | while (!list_empty(spawns)) { | |
165 | struct crypto_instance *inst; | |
166 | ||
167 | spawn = list_first_entry(spawns, struct crypto_spawn, | |
168 | list); | |
169 | inst = spawn->inst; | |
170 | ||
2bf29016 | 171 | list_move(&spawn->list, &stack); |
5f567fff HX |
172 | spawn->dead = !spawn->registered || &inst->alg != nalg; |
173 | ||
174 | if (!spawn->registered) | |
175 | break; | |
176 | ||
177 | BUG_ON(&inst->alg == alg); | |
2bf29016 HX |
178 | |
179 | if (&inst->alg == nalg) | |
180 | break; | |
181 | ||
2bf29016 | 182 | spawns = &inst->alg.cra_users; |
9a006742 EB |
183 | |
184 | /* | |
5f567fff HX |
185 | * Even if spawn->registered is true, the |
186 | * instance itself may still be unregistered. | |
187 | * This is because it may have failed during | |
188 | * registration. Therefore we still need to | |
189 | * make the following test. | |
190 | * | |
9a006742 EB |
191 | * We may encounter an unregistered instance here, since |
192 | * an instance's spawns are set up prior to the instance | |
193 | * being registered. An unregistered instance will have | |
194 | * NULL ->cra_users.next, since ->cra_users isn't | |
195 | * properly initialized until registration. But an | |
196 | * unregistered instance cannot have any users, so treat | |
197 | * it the same as ->cra_users being empty. | |
198 | */ | |
199 | if (spawns->next == NULL) | |
200 | break; | |
2bf29016 HX |
201 | } |
202 | } while ((spawns = crypto_more_spawns(alg, &stack, &top, | |
203 | &secondary_spawns))); | |
204 | ||
02244ba4 HX |
205 | /* |
206 | * Remove all instances that are marked as dead. Also | |
207 | * complete the resurrection of the others by moving them | |
208 | * back to the cra_users list. | |
209 | */ | |
2bf29016 | 210 | list_for_each_entry_safe(spawn, n, &secondary_spawns, list) { |
4f87ee11 | 211 | if (!spawn->dead) |
2bf29016 | 212 | list_move(&spawn->list, &spawn->alg->cra_users); |
5f567fff | 213 | else if (spawn->registered) |
1f723710 | 214 | crypto_remove_instance(spawn->inst, list); |
6bfd4809 HX |
215 | } |
216 | } | |
89b596ba | 217 | EXPORT_SYMBOL_GPL(crypto_remove_spawns); |
6bfd4809 | 218 | |
cad439fc HX |
219 | static struct crypto_larval *crypto_alloc_test_larval(struct crypto_alg *alg) |
220 | { | |
221 | struct crypto_larval *larval; | |
222 | ||
223 | if (!IS_ENABLED(CONFIG_CRYPTO_MANAGER)) | |
224 | return NULL; | |
225 | ||
226 | larval = crypto_larval_alloc(alg->cra_name, | |
227 | alg->cra_flags | CRYPTO_ALG_TESTED, 0); | |
228 | if (IS_ERR(larval)) | |
229 | return larval; | |
230 | ||
231 | larval->adult = crypto_mod_get(alg); | |
232 | if (!larval->adult) { | |
233 | kfree(larval); | |
234 | return ERR_PTR(-ENOENT); | |
235 | } | |
236 | ||
237 | refcount_set(&larval->alg.cra_refcnt, 1); | |
238 | memcpy(larval->alg.cra_driver_name, alg->cra_driver_name, | |
239 | CRYPTO_MAX_ALG_NAME); | |
240 | larval->alg.cra_priority = alg->cra_priority; | |
241 | ||
242 | return larval; | |
243 | } | |
244 | ||
73d3864a | 245 | static struct crypto_larval *__crypto_register_alg(struct crypto_alg *alg) |
4cc7720c HX |
246 | { |
247 | struct crypto_alg *q; | |
73d3864a | 248 | struct crypto_larval *larval; |
6bfd4809 HX |
249 | int ret = -EAGAIN; |
250 | ||
251 | if (crypto_is_dead(alg)) | |
73d3864a | 252 | goto err; |
6bfd4809 HX |
253 | |
254 | INIT_LIST_HEAD(&alg->cra_users); | |
255 | ||
73d3864a HX |
256 | /* No cheating! */ |
257 | alg->cra_flags &= ~CRYPTO_ALG_TESTED; | |
258 | ||
6bfd4809 | 259 | ret = -EEXIST; |
4cc7720c | 260 | |
cce9e06d | 261 | list_for_each_entry(q, &crypto_alg_list, cra_list) { |
4cc7720c | 262 | if (q == alg) |
73d3864a HX |
263 | goto err; |
264 | ||
b8e15992 HX |
265 | if (crypto_is_moribund(q)) |
266 | continue; | |
267 | ||
73d3864a HX |
268 | if (crypto_is_larval(q)) { |
269 | if (!strcmp(alg->cra_driver_name, q->cra_driver_name)) | |
270 | goto err; | |
271 | continue; | |
272 | } | |
273 | ||
274 | if (!strcmp(q->cra_driver_name, alg->cra_name) || | |
275 | !strcmp(q->cra_name, alg->cra_driver_name)) | |
276 | goto err; | |
277 | } | |
278 | ||
cad439fc | 279 | larval = crypto_alloc_test_larval(alg); |
73d3864a HX |
280 | if (IS_ERR(larval)) |
281 | goto out; | |
282 | ||
73d3864a | 283 | list_add(&alg->cra_list, &crypto_alg_list); |
cad439fc HX |
284 | |
285 | if (larval) | |
286 | list_add(&larval->alg.cra_list, &crypto_alg_list); | |
beaaaa37 HX |
287 | else |
288 | alg->cra_flags |= CRYPTO_ALG_TESTED; | |
73d3864a | 289 | |
1f6669b9 | 290 | crypto_stats_init(alg); |
cac5818c | 291 | |
5357c6c4 | 292 | out: |
73d3864a HX |
293 | return larval; |
294 | ||
73d3864a HX |
295 | err: |
296 | larval = ERR_PTR(ret); | |
297 | goto out; | |
298 | } | |
299 | ||
300 | void crypto_alg_tested(const char *name, int err) | |
301 | { | |
302 | struct crypto_larval *test; | |
303 | struct crypto_alg *alg; | |
304 | struct crypto_alg *q; | |
305 | LIST_HEAD(list); | |
2bbb3375 | 306 | bool best; |
73d3864a HX |
307 | |
308 | down_write(&crypto_alg_sem); | |
309 | list_for_each_entry(q, &crypto_alg_list, cra_list) { | |
b8e15992 | 310 | if (crypto_is_moribund(q) || !crypto_is_larval(q)) |
73d3864a HX |
311 | continue; |
312 | ||
313 | test = (struct crypto_larval *)q; | |
314 | ||
315 | if (!strcmp(q->cra_driver_name, name)) | |
316 | goto found; | |
317 | } | |
318 | ||
c7235857 | 319 | pr_err("alg: Unexpected test result for %s: %d\n", name, err); |
73d3864a HX |
320 | goto unlock; |
321 | ||
322 | found: | |
b8e15992 | 323 | q->cra_flags |= CRYPTO_ALG_DEAD; |
73d3864a HX |
324 | alg = test->adult; |
325 | if (err || list_empty(&alg->cra_list)) | |
326 | goto complete; | |
327 | ||
328 | alg->cra_flags |= CRYPTO_ALG_TESTED; | |
329 | ||
2bbb3375 HX |
330 | /* Only satisfy larval waiters if we are the best. */ |
331 | best = true; | |
332 | list_for_each_entry(q, &crypto_alg_list, cra_list) { | |
333 | if (crypto_is_moribund(q) || !crypto_is_larval(q)) | |
334 | continue; | |
335 | ||
336 | if (strcmp(alg->cra_name, q->cra_name)) | |
337 | continue; | |
338 | ||
339 | if (q->cra_priority > alg->cra_priority) { | |
340 | best = false; | |
341 | break; | |
342 | } | |
343 | } | |
344 | ||
73d3864a HX |
345 | list_for_each_entry(q, &crypto_alg_list, cra_list) { |
346 | if (q == alg) | |
347 | continue; | |
6bfd4809 HX |
348 | |
349 | if (crypto_is_moribund(q)) | |
350 | continue; | |
351 | ||
352 | if (crypto_is_larval(q)) { | |
2825982d HX |
353 | struct crypto_larval *larval = (void *)q; |
354 | ||
d8058480 HX |
355 | /* |
356 | * Check to see if either our generic name or | |
357 | * specific name can satisfy the name requested | |
358 | * by the larval entry q. | |
359 | */ | |
6bfd4809 HX |
360 | if (strcmp(alg->cra_name, q->cra_name) && |
361 | strcmp(alg->cra_driver_name, q->cra_name)) | |
362 | continue; | |
363 | ||
364 | if (larval->adult) | |
365 | continue; | |
492e2b63 HX |
366 | if ((q->cra_flags ^ alg->cra_flags) & larval->mask) |
367 | continue; | |
6bfd4809 | 368 | |
2bbb3375 HX |
369 | if (best && crypto_mod_get(alg)) |
370 | larval->adult = alg; | |
371 | else | |
372 | larval->adult = ERR_PTR(-EAGAIN); | |
373 | ||
6bfd4809 | 374 | continue; |
2825982d | 375 | } |
6bfd4809 HX |
376 | |
377 | if (strcmp(alg->cra_name, q->cra_name)) | |
378 | continue; | |
379 | ||
380 | if (strcmp(alg->cra_driver_name, q->cra_driver_name) && | |
381 | q->cra_priority > alg->cra_priority) | |
382 | continue; | |
383 | ||
2bf29016 | 384 | crypto_remove_spawns(q, &list, alg); |
cce9e06d | 385 | } |
2825982d | 386 | |
73d3864a HX |
387 | complete: |
388 | complete_all(&test->completion); | |
2825982d | 389 | |
73d3864a HX |
390 | unlock: |
391 | up_write(&crypto_alg_sem); | |
392 | ||
393 | crypto_remove_final(&list); | |
cce9e06d | 394 | } |
73d3864a | 395 | EXPORT_SYMBOL_GPL(crypto_alg_tested); |
4cc7720c | 396 | |
22e5b20b | 397 | void crypto_remove_final(struct list_head *list) |
6bfd4809 HX |
398 | { |
399 | struct crypto_alg *alg; | |
400 | struct crypto_alg *n; | |
401 | ||
402 | list_for_each_entry_safe(alg, n, list, cra_list) { | |
403 | list_del_init(&alg->cra_list); | |
404 | crypto_alg_put(alg); | |
405 | } | |
406 | } | |
22e5b20b | 407 | EXPORT_SYMBOL_GPL(crypto_remove_final); |
6bfd4809 | 408 | |
4cc7720c HX |
409 | int crypto_register_alg(struct crypto_alg *alg) |
410 | { | |
73d3864a | 411 | struct crypto_larval *larval; |
adad556e | 412 | bool test_started; |
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); |
adad556e | 422 | test_started = static_key_enabled(&crypto_boot_test_finished); |
cad439fc HX |
423 | if (!IS_ERR_OR_NULL(larval)) |
424 | larval->test_started = test_started; | |
4cc7720c HX |
425 | up_write(&crypto_alg_sem); |
426 | ||
cad439fc | 427 | if (IS_ERR_OR_NULL(larval)) |
73d3864a HX |
428 | return PTR_ERR(larval); |
429 | ||
adad556e HX |
430 | if (test_started) |
431 | crypto_wait_for_test(larval); | |
73d3864a | 432 | return 0; |
4cc7720c | 433 | } |
cce9e06d HX |
434 | EXPORT_SYMBOL_GPL(crypto_register_alg); |
435 | ||
6bfd4809 HX |
436 | static int crypto_remove_alg(struct crypto_alg *alg, struct list_head *list) |
437 | { | |
438 | if (unlikely(list_empty(&alg->cra_list))) | |
439 | return -ENOENT; | |
440 | ||
441 | alg->cra_flags |= CRYPTO_ALG_DEAD; | |
442 | ||
6bfd4809 | 443 | list_del_init(&alg->cra_list); |
2bf29016 | 444 | crypto_remove_spawns(alg, list, NULL); |
6bfd4809 HX |
445 | |
446 | return 0; | |
447 | } | |
448 | ||
c6d633a9 | 449 | void crypto_unregister_alg(struct crypto_alg *alg) |
cce9e06d | 450 | { |
6bfd4809 HX |
451 | int ret; |
452 | LIST_HEAD(list); | |
5357c6c4 | 453 | |
cce9e06d | 454 | down_write(&crypto_alg_sem); |
6bfd4809 | 455 | ret = crypto_remove_alg(alg, &list); |
cce9e06d HX |
456 | up_write(&crypto_alg_sem); |
457 | ||
c6d633a9 EB |
458 | if (WARN(ret, "Algorithm %s is not registered", alg->cra_driver_name)) |
459 | return; | |
cce9e06d | 460 | |
ce8614a3 | 461 | BUG_ON(refcount_read(&alg->cra_refcnt) != 1); |
cce9e06d HX |
462 | if (alg->cra_destroy) |
463 | alg->cra_destroy(alg); | |
464 | ||
6bfd4809 | 465 | crypto_remove_final(&list); |
cce9e06d HX |
466 | } |
467 | EXPORT_SYMBOL_GPL(crypto_unregister_alg); | |
468 | ||
4b004346 MB |
469 | int crypto_register_algs(struct crypto_alg *algs, int count) |
470 | { | |
471 | int i, ret; | |
472 | ||
473 | for (i = 0; i < count; i++) { | |
474 | ret = crypto_register_alg(&algs[i]); | |
475 | if (ret) | |
476 | goto err; | |
477 | } | |
478 | ||
479 | return 0; | |
480 | ||
481 | err: | |
482 | for (--i; i >= 0; --i) | |
483 | crypto_unregister_alg(&algs[i]); | |
484 | ||
485 | return ret; | |
486 | } | |
487 | EXPORT_SYMBOL_GPL(crypto_register_algs); | |
488 | ||
c6d633a9 | 489 | void crypto_unregister_algs(struct crypto_alg *algs, int count) |
4b004346 | 490 | { |
c6d633a9 | 491 | int i; |
4b004346 | 492 | |
c6d633a9 EB |
493 | for (i = 0; i < count; i++) |
494 | crypto_unregister_alg(&algs[i]); | |
4b004346 MB |
495 | } |
496 | EXPORT_SYMBOL_GPL(crypto_unregister_algs); | |
497 | ||
4cc7720c HX |
498 | int crypto_register_template(struct crypto_template *tmpl) |
499 | { | |
500 | struct crypto_template *q; | |
501 | int err = -EEXIST; | |
502 | ||
503 | down_write(&crypto_alg_sem); | |
504 | ||
002c77a4 JW |
505 | crypto_check_module_sig(tmpl->module); |
506 | ||
4cc7720c HX |
507 | list_for_each_entry(q, &crypto_template_list, list) { |
508 | if (q == tmpl) | |
509 | goto out; | |
510 | } | |
511 | ||
512 | list_add(&tmpl->list, &crypto_template_list); | |
513 | err = 0; | |
514 | out: | |
515 | up_write(&crypto_alg_sem); | |
516 | return err; | |
517 | } | |
518 | EXPORT_SYMBOL_GPL(crypto_register_template); | |
519 | ||
9572442d XW |
520 | int crypto_register_templates(struct crypto_template *tmpls, int count) |
521 | { | |
522 | int i, err; | |
523 | ||
524 | for (i = 0; i < count; i++) { | |
525 | err = crypto_register_template(&tmpls[i]); | |
526 | if (err) | |
527 | goto out; | |
528 | } | |
529 | return 0; | |
530 | ||
531 | out: | |
532 | for (--i; i >= 0; --i) | |
533 | crypto_unregister_template(&tmpls[i]); | |
534 | return err; | |
535 | } | |
536 | EXPORT_SYMBOL_GPL(crypto_register_templates); | |
537 | ||
4cc7720c HX |
538 | void crypto_unregister_template(struct crypto_template *tmpl) |
539 | { | |
540 | struct crypto_instance *inst; | |
b67bfe0d | 541 | struct hlist_node *n; |
4cc7720c | 542 | struct hlist_head *list; |
6bfd4809 | 543 | LIST_HEAD(users); |
4cc7720c HX |
544 | |
545 | down_write(&crypto_alg_sem); | |
546 | ||
547 | BUG_ON(list_empty(&tmpl->list)); | |
548 | list_del_init(&tmpl->list); | |
549 | ||
550 | list = &tmpl->instances; | |
b67bfe0d | 551 | hlist_for_each_entry(inst, list, list) { |
6bfd4809 | 552 | int err = crypto_remove_alg(&inst->alg, &users); |
0efcb8d5 | 553 | |
6bfd4809 | 554 | BUG_ON(err); |
4cc7720c HX |
555 | } |
556 | ||
557 | up_write(&crypto_alg_sem); | |
558 | ||
b67bfe0d | 559 | hlist_for_each_entry_safe(inst, n, list, list) { |
ce8614a3 | 560 | BUG_ON(refcount_read(&inst->alg.cra_refcnt) != 1); |
319382a6 | 561 | crypto_free_instance(inst); |
4cc7720c | 562 | } |
6bfd4809 | 563 | crypto_remove_final(&users); |
4cc7720c HX |
564 | } |
565 | EXPORT_SYMBOL_GPL(crypto_unregister_template); | |
566 | ||
9572442d XW |
567 | void crypto_unregister_templates(struct crypto_template *tmpls, int count) |
568 | { | |
569 | int i; | |
570 | ||
571 | for (i = count - 1; i >= 0; --i) | |
572 | crypto_unregister_template(&tmpls[i]); | |
573 | } | |
574 | EXPORT_SYMBOL_GPL(crypto_unregister_templates); | |
575 | ||
4cc7720c HX |
576 | static struct crypto_template *__crypto_lookup_template(const char *name) |
577 | { | |
578 | struct crypto_template *q, *tmpl = NULL; | |
579 | ||
580 | down_read(&crypto_alg_sem); | |
581 | list_for_each_entry(q, &crypto_template_list, list) { | |
582 | if (strcmp(q->name, name)) | |
583 | continue; | |
584 | if (unlikely(!crypto_tmpl_get(q))) | |
585 | continue; | |
586 | ||
587 | tmpl = q; | |
588 | break; | |
589 | } | |
590 | up_read(&crypto_alg_sem); | |
591 | ||
592 | return tmpl; | |
593 | } | |
594 | ||
595 | struct crypto_template *crypto_lookup_template(const char *name) | |
596 | { | |
4943ba16 KC |
597 | return try_then_request_module(__crypto_lookup_template(name), |
598 | "crypto-%s", name); | |
4cc7720c HX |
599 | } |
600 | EXPORT_SYMBOL_GPL(crypto_lookup_template); | |
601 | ||
602 | int crypto_register_instance(struct crypto_template *tmpl, | |
603 | struct crypto_instance *inst) | |
604 | { | |
73d3864a | 605 | struct crypto_larval *larval; |
5f567fff | 606 | struct crypto_spawn *spawn; |
73d3864a | 607 | int err; |
4cc7720c | 608 | |
4cc7720c HX |
609 | err = crypto_check_alg(&inst->alg); |
610 | if (err) | |
9c521a20 SM |
611 | return err; |
612 | ||
4cc7720c | 613 | inst->alg.cra_module = tmpl->module; |
64a947b1 | 614 | inst->alg.cra_flags |= CRYPTO_ALG_INSTANCE; |
4cc7720c HX |
615 | |
616 | down_write(&crypto_alg_sem); | |
617 | ||
5f567fff HX |
618 | larval = ERR_PTR(-EAGAIN); |
619 | for (spawn = inst->spawns; spawn;) { | |
620 | struct crypto_spawn *next; | |
621 | ||
622 | if (spawn->dead) | |
623 | goto unlock; | |
624 | ||
625 | next = spawn->next; | |
626 | spawn->inst = inst; | |
627 | spawn->registered = true; | |
628 | ||
aed11cf5 | 629 | crypto_mod_put(spawn->alg); |
5f567fff HX |
630 | |
631 | spawn = next; | |
632 | } | |
633 | ||
73d3864a HX |
634 | larval = __crypto_register_alg(&inst->alg); |
635 | if (IS_ERR(larval)) | |
4cc7720c | 636 | goto unlock; |
cad439fc HX |
637 | else if (larval) |
638 | larval->test_started = true; | |
adad556e | 639 | |
4cc7720c HX |
640 | hlist_add_head(&inst->list, &tmpl->instances); |
641 | inst->tmpl = tmpl; | |
642 | ||
643 | unlock: | |
644 | up_write(&crypto_alg_sem); | |
645 | ||
73d3864a | 646 | err = PTR_ERR(larval); |
cad439fc | 647 | if (IS_ERR_OR_NULL(larval)) |
73d3864a HX |
648 | goto err; |
649 | ||
650 | crypto_wait_for_test(larval); | |
651 | err = 0; | |
6bfd4809 | 652 | |
4cc7720c HX |
653 | err: |
654 | return err; | |
655 | } | |
656 | EXPORT_SYMBOL_GPL(crypto_register_instance); | |
ce3fd840 | 657 | |
c6d633a9 | 658 | void crypto_unregister_instance(struct crypto_instance *inst) |
ce3fd840 | 659 | { |
1f723710 | 660 | LIST_HEAD(list); |
ce3fd840 | 661 | |
ce3fd840 SK |
662 | down_write(&crypto_alg_sem); |
663 | ||
87b16756 | 664 | crypto_remove_spawns(&inst->alg, &list, NULL); |
1f723710 | 665 | crypto_remove_instance(inst, &list); |
ce3fd840 SK |
666 | |
667 | up_write(&crypto_alg_sem); | |
668 | ||
1f723710 | 669 | crypto_remove_final(&list); |
ce3fd840 SK |
670 | } |
671 | EXPORT_SYMBOL_GPL(crypto_unregister_instance); | |
4cc7720c | 672 | |
aed11cf5 EB |
673 | int crypto_grab_spawn(struct crypto_spawn *spawn, struct crypto_instance *inst, |
674 | const char *name, u32 type, u32 mask) | |
6bfd4809 | 675 | { |
aed11cf5 | 676 | struct crypto_alg *alg; |
6bfd4809 HX |
677 | int err = -EAGAIN; |
678 | ||
6b476662 EB |
679 | if (WARN_ON_ONCE(inst == NULL)) |
680 | return -EINVAL; | |
681 | ||
aed11cf5 EB |
682 | /* Allow the result of crypto_attr_alg_name() to be passed directly */ |
683 | if (IS_ERR(name)) | |
684 | return PTR_ERR(name); | |
5f567fff | 685 | |
aed11cf5 EB |
686 | alg = crypto_find_alg(name, spawn->frontend, type, mask); |
687 | if (IS_ERR(alg)) | |
688 | return PTR_ERR(alg); | |
6bfd4809 HX |
689 | |
690 | down_write(&crypto_alg_sem); | |
691 | if (!crypto_is_moribund(alg)) { | |
692 | list_add(&spawn->list, &alg->cra_users); | |
693 | spawn->alg = alg; | |
aed11cf5 EB |
694 | spawn->mask = mask; |
695 | spawn->next = inst->spawns; | |
696 | inst->spawns = spawn; | |
7bcb2c99 EB |
697 | inst->alg.cra_flags |= |
698 | (alg->cra_flags & CRYPTO_ALG_INHERITED_FLAGS); | |
6bfd4809 HX |
699 | err = 0; |
700 | } | |
701 | up_write(&crypto_alg_sem); | |
5f567fff HX |
702 | if (err) |
703 | crypto_mod_put(alg); | |
d6ef2f19 HX |
704 | return err; |
705 | } | |
706 | EXPORT_SYMBOL_GPL(crypto_grab_spawn); | |
707 | ||
6bfd4809 HX |
708 | void crypto_drop_spawn(struct crypto_spawn *spawn) |
709 | { | |
ff670627 EB |
710 | if (!spawn->alg) /* not yet initialized? */ |
711 | return; | |
712 | ||
6bfd4809 | 713 | down_write(&crypto_alg_sem); |
4f87ee11 | 714 | if (!spawn->dead) |
7db3b61b | 715 | list_del(&spawn->list); |
6bfd4809 | 716 | up_write(&crypto_alg_sem); |
5f567fff | 717 | |
aed11cf5 | 718 | if (!spawn->registered) |
5f567fff | 719 | crypto_mod_put(spawn->alg); |
6bfd4809 HX |
720 | } |
721 | EXPORT_SYMBOL_GPL(crypto_drop_spawn); | |
722 | ||
97eedce1 | 723 | static struct crypto_alg *crypto_spawn_alg(struct crypto_spawn *spawn) |
6bfd4809 | 724 | { |
6603523b HX |
725 | struct crypto_alg *alg = ERR_PTR(-EAGAIN); |
726 | struct crypto_alg *target; | |
727 | bool shoot = false; | |
6bfd4809 HX |
728 | |
729 | down_read(&crypto_alg_sem); | |
6603523b HX |
730 | if (!spawn->dead) { |
731 | alg = spawn->alg; | |
732 | if (!crypto_mod_get(alg)) { | |
733 | target = crypto_alg_get(alg); | |
734 | shoot = true; | |
735 | alg = ERR_PTR(-EAGAIN); | |
736 | } | |
6bfd4809 | 737 | } |
73669cc5 | 738 | up_read(&crypto_alg_sem); |
6bfd4809 | 739 | |
6603523b HX |
740 | if (shoot) { |
741 | crypto_shoot_alg(target); | |
742 | crypto_alg_put(target); | |
743 | } | |
744 | ||
745 | return alg; | |
97eedce1 HX |
746 | } |
747 | ||
748 | struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn, u32 type, | |
749 | u32 mask) | |
750 | { | |
751 | struct crypto_alg *alg; | |
752 | struct crypto_tfm *tfm; | |
753 | ||
754 | alg = crypto_spawn_alg(spawn); | |
755 | if (IS_ERR(alg)) | |
756 | return ERR_CAST(alg); | |
757 | ||
2e306ee0 HX |
758 | tfm = ERR_PTR(-EINVAL); |
759 | if (unlikely((alg->cra_flags ^ type) & mask)) | |
760 | goto out_put_alg; | |
761 | ||
27d2a330 | 762 | tfm = __crypto_alloc_tfm(alg, type, mask); |
6bfd4809 | 763 | if (IS_ERR(tfm)) |
2e306ee0 HX |
764 | goto out_put_alg; |
765 | ||
766 | return tfm; | |
6bfd4809 | 767 | |
2e306ee0 HX |
768 | out_put_alg: |
769 | crypto_mod_put(alg); | |
6bfd4809 HX |
770 | return tfm; |
771 | } | |
772 | EXPORT_SYMBOL_GPL(crypto_spawn_tfm); | |
773 | ||
97eedce1 HX |
774 | void *crypto_spawn_tfm2(struct crypto_spawn *spawn) |
775 | { | |
776 | struct crypto_alg *alg; | |
777 | struct crypto_tfm *tfm; | |
778 | ||
779 | alg = crypto_spawn_alg(spawn); | |
780 | if (IS_ERR(alg)) | |
781 | return ERR_CAST(alg); | |
782 | ||
783 | tfm = crypto_create_tfm(alg, spawn->frontend); | |
784 | if (IS_ERR(tfm)) | |
785 | goto out_put_alg; | |
786 | ||
787 | return tfm; | |
788 | ||
789 | out_put_alg: | |
790 | crypto_mod_put(alg); | |
791 | return tfm; | |
792 | } | |
793 | EXPORT_SYMBOL_GPL(crypto_spawn_tfm2); | |
794 | ||
2825982d HX |
795 | int crypto_register_notifier(struct notifier_block *nb) |
796 | { | |
797 | return blocking_notifier_chain_register(&crypto_chain, nb); | |
798 | } | |
799 | EXPORT_SYMBOL_GPL(crypto_register_notifier); | |
800 | ||
801 | int crypto_unregister_notifier(struct notifier_block *nb) | |
802 | { | |
803 | return blocking_notifier_chain_unregister(&crypto_chain, nb); | |
804 | } | |
805 | EXPORT_SYMBOL_GPL(crypto_unregister_notifier); | |
806 | ||
ebc610e5 | 807 | struct crypto_attr_type *crypto_get_attr_type(struct rtattr **tb) |
7fed0bf2 | 808 | { |
39e1ee01 | 809 | struct rtattr *rta = tb[0]; |
ebc610e5 HX |
810 | struct crypto_attr_type *algt; |
811 | ||
812 | if (!rta) | |
813 | return ERR_PTR(-ENOENT); | |
814 | if (RTA_PAYLOAD(rta) < sizeof(*algt)) | |
815 | return ERR_PTR(-EINVAL); | |
39e1ee01 HX |
816 | if (rta->rta_type != CRYPTOA_TYPE) |
817 | return ERR_PTR(-EINVAL); | |
ebc610e5 HX |
818 | |
819 | algt = RTA_DATA(rta); | |
820 | ||
821 | return algt; | |
822 | } | |
823 | EXPORT_SYMBOL_GPL(crypto_get_attr_type); | |
824 | ||
7bcb2c99 EB |
825 | /** |
826 | * crypto_check_attr_type() - check algorithm type and compute inherited mask | |
827 | * @tb: the template parameters | |
828 | * @type: the algorithm type the template would be instantiated as | |
829 | * @mask_ret: (output) the mask that should be passed to crypto_grab_*() | |
830 | * to restrict the flags of any inner algorithms | |
831 | * | |
832 | * Validate that the algorithm type the user requested is compatible with the | |
833 | * one the template would actually be instantiated as. E.g., if the user is | |
834 | * doing crypto_alloc_shash("cbc(aes)", ...), this would return an error because | |
835 | * the "cbc" template creates an "skcipher" algorithm, not an "shash" algorithm. | |
836 | * | |
837 | * Also compute the mask to use to restrict the flags of any inner algorithms. | |
838 | * | |
839 | * Return: 0 on success; -errno on failure | |
840 | */ | |
841 | int crypto_check_attr_type(struct rtattr **tb, u32 type, u32 *mask_ret) | |
ebc610e5 HX |
842 | { |
843 | struct crypto_attr_type *algt; | |
844 | ||
845 | algt = crypto_get_attr_type(tb); | |
846 | if (IS_ERR(algt)) | |
847 | return PTR_ERR(algt); | |
848 | ||
849 | if ((algt->type ^ type) & algt->mask) | |
850 | return -EINVAL; | |
851 | ||
7bcb2c99 | 852 | *mask_ret = crypto_algt_inherited_mask(algt); |
ebc610e5 HX |
853 | return 0; |
854 | } | |
855 | EXPORT_SYMBOL_GPL(crypto_check_attr_type); | |
856 | ||
68b6c7d6 | 857 | const char *crypto_attr_alg_name(struct rtattr *rta) |
ebc610e5 | 858 | { |
7fed0bf2 HX |
859 | struct crypto_attr_alg *alga; |
860 | ||
ebc610e5 HX |
861 | if (!rta) |
862 | return ERR_PTR(-ENOENT); | |
863 | if (RTA_PAYLOAD(rta) < sizeof(*alga)) | |
7fed0bf2 | 864 | return ERR_PTR(-EINVAL); |
39e1ee01 HX |
865 | if (rta->rta_type != CRYPTOA_ALG) |
866 | return ERR_PTR(-EINVAL); | |
7fed0bf2 HX |
867 | |
868 | alga = RTA_DATA(rta); | |
869 | alga->name[CRYPTO_MAX_ALG_NAME - 1] = 0; | |
870 | ||
68b6c7d6 HX |
871 | return alga->name; |
872 | } | |
873 | EXPORT_SYMBOL_GPL(crypto_attr_alg_name); | |
874 | ||
32f27c74 HX |
875 | int crypto_inst_setname(struct crypto_instance *inst, const char *name, |
876 | struct crypto_alg *alg) | |
877 | { | |
878 | if (snprintf(inst->alg.cra_name, CRYPTO_MAX_ALG_NAME, "%s(%s)", name, | |
879 | alg->cra_name) >= CRYPTO_MAX_ALG_NAME) | |
880 | return -ENAMETOOLONG; | |
881 | ||
882 | if (snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s(%s)", | |
883 | name, alg->cra_driver_name) >= CRYPTO_MAX_ALG_NAME) | |
884 | return -ENAMETOOLONG; | |
885 | ||
886 | return 0; | |
887 | } | |
888 | EXPORT_SYMBOL_GPL(crypto_inst_setname); | |
889 | ||
b5b7f088 HX |
890 | void crypto_init_queue(struct crypto_queue *queue, unsigned int max_qlen) |
891 | { | |
892 | INIT_LIST_HEAD(&queue->list); | |
893 | queue->backlog = &queue->list; | |
894 | queue->qlen = 0; | |
895 | queue->max_qlen = max_qlen; | |
896 | } | |
897 | EXPORT_SYMBOL_GPL(crypto_init_queue); | |
898 | ||
899 | int crypto_enqueue_request(struct crypto_queue *queue, | |
900 | struct crypto_async_request *request) | |
901 | { | |
902 | int err = -EINPROGRESS; | |
903 | ||
904 | if (unlikely(queue->qlen >= queue->max_qlen)) { | |
6b80ea38 GBY |
905 | if (!(request->flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) { |
906 | err = -ENOSPC; | |
b5b7f088 | 907 | goto out; |
6b80ea38 GBY |
908 | } |
909 | err = -EBUSY; | |
b5b7f088 HX |
910 | if (queue->backlog == &queue->list) |
911 | queue->backlog = &request->list; | |
912 | } | |
913 | ||
914 | queue->qlen++; | |
915 | list_add_tail(&request->list, &queue->list); | |
916 | ||
917 | out: | |
918 | return err; | |
919 | } | |
920 | EXPORT_SYMBOL_GPL(crypto_enqueue_request); | |
921 | ||
ec6e2bf3 IP |
922 | void crypto_enqueue_request_head(struct crypto_queue *queue, |
923 | struct crypto_async_request *request) | |
924 | { | |
925 | queue->qlen++; | |
926 | list_add(&request->list, &queue->list); | |
927 | } | |
928 | EXPORT_SYMBOL_GPL(crypto_enqueue_request_head); | |
929 | ||
31d228cc | 930 | struct crypto_async_request *crypto_dequeue_request(struct crypto_queue *queue) |
b5b7f088 HX |
931 | { |
932 | struct list_head *request; | |
933 | ||
934 | if (unlikely(!queue->qlen)) | |
935 | return NULL; | |
936 | ||
937 | queue->qlen--; | |
938 | ||
939 | if (queue->backlog != &queue->list) | |
940 | queue->backlog = queue->backlog->next; | |
941 | ||
942 | request = queue->list.next; | |
943 | list_del(request); | |
944 | ||
31d228cc | 945 | return list_entry(request, struct crypto_async_request, list); |
b5b7f088 HX |
946 | } |
947 | EXPORT_SYMBOL_GPL(crypto_dequeue_request); | |
948 | ||
7613636d HX |
949 | static inline void crypto_inc_byte(u8 *a, unsigned int size) |
950 | { | |
951 | u8 *b = (a + size); | |
952 | u8 c; | |
953 | ||
954 | for (; size; size--) { | |
955 | c = *--b + 1; | |
956 | *b = c; | |
957 | if (c) | |
958 | break; | |
959 | } | |
960 | } | |
961 | ||
962 | void crypto_inc(u8 *a, unsigned int size) | |
963 | { | |
964 | __be32 *b = (__be32 *)(a + size); | |
965 | u32 c; | |
966 | ||
db91af0f | 967 | if (IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) || |
27c539ae | 968 | IS_ALIGNED((unsigned long)b, __alignof__(*b))) |
db91af0f AB |
969 | for (; size >= 4; size -= 4) { |
970 | c = be32_to_cpu(*--b) + 1; | |
971 | *b = cpu_to_be32(c); | |
27c539ae | 972 | if (likely(c)) |
db91af0f AB |
973 | return; |
974 | } | |
7613636d HX |
975 | |
976 | crypto_inc_byte(a, size); | |
977 | } | |
978 | EXPORT_SYMBOL_GPL(crypto_inc); | |
979 | ||
a7c391f0 | 980 | void __crypto_xor(u8 *dst, const u8 *src1, const u8 *src2, unsigned int len) |
7613636d | 981 | { |
db91af0f AB |
982 | int relalign = 0; |
983 | ||
984 | if (!IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)) { | |
985 | int size = sizeof(unsigned long); | |
a7c391f0 AB |
986 | int d = (((unsigned long)dst ^ (unsigned long)src1) | |
987 | ((unsigned long)dst ^ (unsigned long)src2)) & | |
988 | (size - 1); | |
db91af0f AB |
989 | |
990 | relalign = d ? 1 << __ffs(d) : size; | |
991 | ||
992 | /* | |
993 | * If we care about alignment, process as many bytes as | |
994 | * needed to advance dst and src to values whose alignments | |
995 | * equal their relative alignment. This will allow us to | |
996 | * process the remainder of the input using optimal strides. | |
997 | */ | |
998 | while (((unsigned long)dst & (relalign - 1)) && len > 0) { | |
a7c391f0 | 999 | *dst++ = *src1++ ^ *src2++; |
db91af0f AB |
1000 | len--; |
1001 | } | |
1002 | } | |
7613636d | 1003 | |
db91af0f | 1004 | while (IS_ENABLED(CONFIG_64BIT) && len >= 8 && !(relalign & 7)) { |
a7c391f0 | 1005 | *(u64 *)dst = *(u64 *)src1 ^ *(u64 *)src2; |
db91af0f | 1006 | dst += 8; |
a7c391f0 AB |
1007 | src1 += 8; |
1008 | src2 += 8; | |
db91af0f AB |
1009 | len -= 8; |
1010 | } | |
7613636d | 1011 | |
db91af0f | 1012 | while (len >= 4 && !(relalign & 3)) { |
a7c391f0 | 1013 | *(u32 *)dst = *(u32 *)src1 ^ *(u32 *)src2; |
db91af0f | 1014 | dst += 4; |
a7c391f0 AB |
1015 | src1 += 4; |
1016 | src2 += 4; | |
db91af0f AB |
1017 | len -= 4; |
1018 | } | |
1019 | ||
1020 | while (len >= 2 && !(relalign & 1)) { | |
a7c391f0 | 1021 | *(u16 *)dst = *(u16 *)src1 ^ *(u16 *)src2; |
db91af0f | 1022 | dst += 2; |
a7c391f0 AB |
1023 | src1 += 2; |
1024 | src2 += 2; | |
db91af0f AB |
1025 | len -= 2; |
1026 | } | |
7613636d | 1027 | |
db91af0f | 1028 | while (len--) |
a7c391f0 | 1029 | *dst++ = *src1++ ^ *src2++; |
7613636d | 1030 | } |
db91af0f | 1031 | EXPORT_SYMBOL_GPL(__crypto_xor); |
7613636d | 1032 | |
38d21433 HX |
1033 | unsigned int crypto_alg_extsize(struct crypto_alg *alg) |
1034 | { | |
c2110f28 HX |
1035 | return alg->cra_ctxsize + |
1036 | (alg->cra_alignmask & ~(crypto_tfm_ctx_alignment() - 1)); | |
38d21433 HX |
1037 | } |
1038 | EXPORT_SYMBOL_GPL(crypto_alg_extsize); | |
1039 | ||
f2aefdab HX |
1040 | int crypto_type_has_alg(const char *name, const struct crypto_type *frontend, |
1041 | u32 type, u32 mask) | |
1042 | { | |
1043 | int ret = 0; | |
1044 | struct crypto_alg *alg = crypto_find_alg(name, frontend, type, mask); | |
1045 | ||
1046 | if (!IS_ERR(alg)) { | |
1047 | crypto_mod_put(alg); | |
1048 | ret = 1; | |
1049 | } | |
1050 | ||
1051 | return ret; | |
1052 | } | |
1053 | EXPORT_SYMBOL_GPL(crypto_type_has_alg); | |
1054 | ||
f7d76e05 | 1055 | #ifdef CONFIG_CRYPTO_STATS |
1f6669b9 CL |
1056 | void crypto_stats_init(struct crypto_alg *alg) |
1057 | { | |
1058 | memset(&alg->stats, 0, sizeof(alg->stats)); | |
1059 | } | |
1060 | EXPORT_SYMBOL_GPL(crypto_stats_init); | |
1061 | ||
f7d76e05 CL |
1062 | void crypto_stats_get(struct crypto_alg *alg) |
1063 | { | |
1064 | crypto_alg_get(alg); | |
1065 | } | |
1066 | EXPORT_SYMBOL_GPL(crypto_stats_get); | |
1067 | ||
f7d76e05 CL |
1068 | void crypto_stats_aead_encrypt(unsigned int cryptlen, struct crypto_alg *alg, |
1069 | int ret) | |
1070 | { | |
1071 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1072 | atomic64_inc(&alg->stats.aead.err_cnt); |
f7d76e05 | 1073 | } else { |
17c18f9e CL |
1074 | atomic64_inc(&alg->stats.aead.encrypt_cnt); |
1075 | atomic64_add(cryptlen, &alg->stats.aead.encrypt_tlen); | |
f7d76e05 CL |
1076 | } |
1077 | crypto_alg_put(alg); | |
1078 | } | |
1079 | EXPORT_SYMBOL_GPL(crypto_stats_aead_encrypt); | |
1080 | ||
1081 | void crypto_stats_aead_decrypt(unsigned int cryptlen, struct crypto_alg *alg, | |
1082 | int ret) | |
1083 | { | |
1084 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1085 | atomic64_inc(&alg->stats.aead.err_cnt); |
f7d76e05 | 1086 | } else { |
17c18f9e CL |
1087 | atomic64_inc(&alg->stats.aead.decrypt_cnt); |
1088 | atomic64_add(cryptlen, &alg->stats.aead.decrypt_tlen); | |
f7d76e05 CL |
1089 | } |
1090 | crypto_alg_put(alg); | |
1091 | } | |
1092 | EXPORT_SYMBOL_GPL(crypto_stats_aead_decrypt); | |
1093 | ||
1094 | void crypto_stats_akcipher_encrypt(unsigned int src_len, int ret, | |
1095 | struct crypto_alg *alg) | |
1096 | { | |
1097 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1098 | atomic64_inc(&alg->stats.akcipher.err_cnt); |
f7d76e05 | 1099 | } else { |
17c18f9e CL |
1100 | atomic64_inc(&alg->stats.akcipher.encrypt_cnt); |
1101 | atomic64_add(src_len, &alg->stats.akcipher.encrypt_tlen); | |
f7d76e05 CL |
1102 | } |
1103 | crypto_alg_put(alg); | |
1104 | } | |
1105 | EXPORT_SYMBOL_GPL(crypto_stats_akcipher_encrypt); | |
1106 | ||
1107 | void crypto_stats_akcipher_decrypt(unsigned int src_len, int ret, | |
1108 | struct crypto_alg *alg) | |
1109 | { | |
1110 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1111 | atomic64_inc(&alg->stats.akcipher.err_cnt); |
f7d76e05 | 1112 | } else { |
17c18f9e CL |
1113 | atomic64_inc(&alg->stats.akcipher.decrypt_cnt); |
1114 | atomic64_add(src_len, &alg->stats.akcipher.decrypt_tlen); | |
f7d76e05 CL |
1115 | } |
1116 | crypto_alg_put(alg); | |
1117 | } | |
1118 | EXPORT_SYMBOL_GPL(crypto_stats_akcipher_decrypt); | |
1119 | ||
1120 | void crypto_stats_akcipher_sign(int ret, struct crypto_alg *alg) | |
1121 | { | |
1122 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) | |
44f13133 | 1123 | atomic64_inc(&alg->stats.akcipher.err_cnt); |
f7d76e05 | 1124 | else |
17c18f9e | 1125 | atomic64_inc(&alg->stats.akcipher.sign_cnt); |
f7d76e05 CL |
1126 | crypto_alg_put(alg); |
1127 | } | |
1128 | EXPORT_SYMBOL_GPL(crypto_stats_akcipher_sign); | |
1129 | ||
1130 | void crypto_stats_akcipher_verify(int ret, struct crypto_alg *alg) | |
1131 | { | |
1132 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) | |
44f13133 | 1133 | atomic64_inc(&alg->stats.akcipher.err_cnt); |
f7d76e05 | 1134 | else |
17c18f9e | 1135 | atomic64_inc(&alg->stats.akcipher.verify_cnt); |
f7d76e05 CL |
1136 | crypto_alg_put(alg); |
1137 | } | |
1138 | EXPORT_SYMBOL_GPL(crypto_stats_akcipher_verify); | |
1139 | ||
1140 | void crypto_stats_compress(unsigned int slen, int ret, struct crypto_alg *alg) | |
1141 | { | |
1142 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1143 | atomic64_inc(&alg->stats.compress.err_cnt); |
f7d76e05 | 1144 | } else { |
17c18f9e CL |
1145 | atomic64_inc(&alg->stats.compress.compress_cnt); |
1146 | atomic64_add(slen, &alg->stats.compress.compress_tlen); | |
f7d76e05 CL |
1147 | } |
1148 | crypto_alg_put(alg); | |
1149 | } | |
1150 | EXPORT_SYMBOL_GPL(crypto_stats_compress); | |
1151 | ||
1152 | void crypto_stats_decompress(unsigned int slen, int ret, struct crypto_alg *alg) | |
1153 | { | |
1154 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1155 | atomic64_inc(&alg->stats.compress.err_cnt); |
f7d76e05 | 1156 | } else { |
17c18f9e CL |
1157 | atomic64_inc(&alg->stats.compress.decompress_cnt); |
1158 | atomic64_add(slen, &alg->stats.compress.decompress_tlen); | |
f7d76e05 CL |
1159 | } |
1160 | crypto_alg_put(alg); | |
1161 | } | |
1162 | EXPORT_SYMBOL_GPL(crypto_stats_decompress); | |
1163 | ||
1164 | void crypto_stats_ahash_update(unsigned int nbytes, int ret, | |
1165 | struct crypto_alg *alg) | |
1166 | { | |
1167 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) | |
44f13133 | 1168 | atomic64_inc(&alg->stats.hash.err_cnt); |
f7d76e05 | 1169 | else |
17c18f9e | 1170 | atomic64_add(nbytes, &alg->stats.hash.hash_tlen); |
f7d76e05 CL |
1171 | crypto_alg_put(alg); |
1172 | } | |
1173 | EXPORT_SYMBOL_GPL(crypto_stats_ahash_update); | |
1174 | ||
1175 | void crypto_stats_ahash_final(unsigned int nbytes, int ret, | |
1176 | struct crypto_alg *alg) | |
1177 | { | |
1178 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1179 | atomic64_inc(&alg->stats.hash.err_cnt); |
f7d76e05 | 1180 | } else { |
17c18f9e CL |
1181 | atomic64_inc(&alg->stats.hash.hash_cnt); |
1182 | atomic64_add(nbytes, &alg->stats.hash.hash_tlen); | |
f7d76e05 CL |
1183 | } |
1184 | crypto_alg_put(alg); | |
1185 | } | |
1186 | EXPORT_SYMBOL_GPL(crypto_stats_ahash_final); | |
1187 | ||
1188 | void crypto_stats_kpp_set_secret(struct crypto_alg *alg, int ret) | |
1189 | { | |
1190 | if (ret) | |
44f13133 | 1191 | atomic64_inc(&alg->stats.kpp.err_cnt); |
f7d76e05 | 1192 | else |
17c18f9e | 1193 | atomic64_inc(&alg->stats.kpp.setsecret_cnt); |
f7d76e05 CL |
1194 | crypto_alg_put(alg); |
1195 | } | |
1196 | EXPORT_SYMBOL_GPL(crypto_stats_kpp_set_secret); | |
1197 | ||
1198 | void crypto_stats_kpp_generate_public_key(struct crypto_alg *alg, int ret) | |
1199 | { | |
1200 | if (ret) | |
44f13133 | 1201 | atomic64_inc(&alg->stats.kpp.err_cnt); |
f7d76e05 | 1202 | else |
17c18f9e | 1203 | atomic64_inc(&alg->stats.kpp.generate_public_key_cnt); |
f7d76e05 CL |
1204 | crypto_alg_put(alg); |
1205 | } | |
1206 | EXPORT_SYMBOL_GPL(crypto_stats_kpp_generate_public_key); | |
1207 | ||
1208 | void crypto_stats_kpp_compute_shared_secret(struct crypto_alg *alg, int ret) | |
1209 | { | |
1210 | if (ret) | |
44f13133 | 1211 | atomic64_inc(&alg->stats.kpp.err_cnt); |
f7d76e05 | 1212 | else |
17c18f9e | 1213 | atomic64_inc(&alg->stats.kpp.compute_shared_secret_cnt); |
f7d76e05 CL |
1214 | crypto_alg_put(alg); |
1215 | } | |
1216 | EXPORT_SYMBOL_GPL(crypto_stats_kpp_compute_shared_secret); | |
1217 | ||
1218 | void crypto_stats_rng_seed(struct crypto_alg *alg, int ret) | |
1219 | { | |
1220 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) | |
44f13133 | 1221 | atomic64_inc(&alg->stats.rng.err_cnt); |
f7d76e05 | 1222 | else |
17c18f9e | 1223 | atomic64_inc(&alg->stats.rng.seed_cnt); |
f7d76e05 CL |
1224 | crypto_alg_put(alg); |
1225 | } | |
1226 | EXPORT_SYMBOL_GPL(crypto_stats_rng_seed); | |
1227 | ||
1228 | void crypto_stats_rng_generate(struct crypto_alg *alg, unsigned int dlen, | |
1229 | int ret) | |
1230 | { | |
1231 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1232 | atomic64_inc(&alg->stats.rng.err_cnt); |
f7d76e05 | 1233 | } else { |
17c18f9e CL |
1234 | atomic64_inc(&alg->stats.rng.generate_cnt); |
1235 | atomic64_add(dlen, &alg->stats.rng.generate_tlen); | |
f7d76e05 CL |
1236 | } |
1237 | crypto_alg_put(alg); | |
1238 | } | |
1239 | EXPORT_SYMBOL_GPL(crypto_stats_rng_generate); | |
1240 | ||
1241 | void crypto_stats_skcipher_encrypt(unsigned int cryptlen, int ret, | |
1242 | struct crypto_alg *alg) | |
1243 | { | |
1244 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1245 | atomic64_inc(&alg->stats.cipher.err_cnt); |
f7d76e05 | 1246 | } else { |
17c18f9e CL |
1247 | atomic64_inc(&alg->stats.cipher.encrypt_cnt); |
1248 | atomic64_add(cryptlen, &alg->stats.cipher.encrypt_tlen); | |
f7d76e05 CL |
1249 | } |
1250 | crypto_alg_put(alg); | |
1251 | } | |
1252 | EXPORT_SYMBOL_GPL(crypto_stats_skcipher_encrypt); | |
1253 | ||
1254 | void crypto_stats_skcipher_decrypt(unsigned int cryptlen, int ret, | |
1255 | struct crypto_alg *alg) | |
1256 | { | |
1257 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1258 | atomic64_inc(&alg->stats.cipher.err_cnt); |
f7d76e05 | 1259 | } else { |
17c18f9e CL |
1260 | atomic64_inc(&alg->stats.cipher.decrypt_cnt); |
1261 | atomic64_add(cryptlen, &alg->stats.cipher.decrypt_tlen); | |
f7d76e05 CL |
1262 | } |
1263 | crypto_alg_put(alg); | |
1264 | } | |
1265 | EXPORT_SYMBOL_GPL(crypto_stats_skcipher_decrypt); | |
1266 | #endif | |
1267 | ||
adad556e HX |
1268 | static void __init crypto_start_tests(void) |
1269 | { | |
1270 | for (;;) { | |
1271 | struct crypto_larval *larval = NULL; | |
1272 | struct crypto_alg *q; | |
1273 | ||
1274 | down_write(&crypto_alg_sem); | |
1275 | ||
1276 | list_for_each_entry(q, &crypto_alg_list, cra_list) { | |
1277 | struct crypto_larval *l; | |
1278 | ||
1279 | if (!crypto_is_larval(q)) | |
1280 | continue; | |
1281 | ||
1282 | l = (void *)q; | |
1283 | ||
1284 | if (!crypto_is_test_larval(l)) | |
1285 | continue; | |
1286 | ||
1287 | if (l->test_started) | |
1288 | continue; | |
1289 | ||
1290 | l->test_started = true; | |
1291 | larval = l; | |
1292 | break; | |
1293 | } | |
1294 | ||
1295 | up_write(&crypto_alg_sem); | |
1296 | ||
1297 | if (!larval) | |
1298 | break; | |
1299 | ||
1300 | crypto_wait_for_test(larval); | |
1301 | } | |
1302 | ||
1303 | static_branch_enable(&crypto_boot_test_finished); | |
1304 | } | |
1305 | ||
cce9e06d HX |
1306 | static int __init crypto_algapi_init(void) |
1307 | { | |
1308 | crypto_init_proc(); | |
adad556e | 1309 | crypto_start_tests(); |
cce9e06d HX |
1310 | return 0; |
1311 | } | |
1312 | ||
1313 | static void __exit crypto_algapi_exit(void) | |
1314 | { | |
1315 | crypto_exit_proc(); | |
1316 | } | |
1317 | ||
adad556e HX |
1318 | /* |
1319 | * We run this at late_initcall so that all the built-in algorithms | |
1320 | * have had a chance to register themselves first. | |
1321 | */ | |
1322 | late_initcall(crypto_algapi_init); | |
cce9e06d HX |
1323 | module_exit(crypto_algapi_exit); |
1324 | ||
1325 | MODULE_LICENSE("GPL"); | |
1326 | MODULE_DESCRIPTION("Cryptographic algorithms API"); | |
c6ce9c58 | 1327 | MODULE_SOFTDEP("pre: cryptomgr"); |