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Commit | Line | Data |
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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
cce9e06d HX |
2 | /* |
3 | * Cryptographic API for algorithms (i.e., low-level API). | |
4 | * | |
5 | * Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au> | |
cce9e06d HX |
6 | */ |
7 | ||
13c935bb | 8 | #include <crypto/algapi.h> |
6bfd4809 | 9 | #include <linux/err.h> |
cce9e06d | 10 | #include <linux/errno.h> |
3133d76f | 11 | #include <linux/fips.h> |
cce9e06d HX |
12 | #include <linux/init.h> |
13 | #include <linux/kernel.h> | |
4cc7720c | 14 | #include <linux/list.h> |
cce9e06d | 15 | #include <linux/module.h> |
7fed0bf2 | 16 | #include <linux/rtnetlink.h> |
5a0e3ad6 | 17 | #include <linux/slab.h> |
cce9e06d HX |
18 | #include <linux/string.h> |
19 | ||
20 | #include "internal.h" | |
21 | ||
4cc7720c HX |
22 | static LIST_HEAD(crypto_template_list); |
23 | ||
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 | |
73d3864a | 219 | static struct crypto_larval *__crypto_register_alg(struct crypto_alg *alg) |
4cc7720c HX |
220 | { |
221 | struct crypto_alg *q; | |
73d3864a | 222 | struct crypto_larval *larval; |
6bfd4809 HX |
223 | int ret = -EAGAIN; |
224 | ||
225 | if (crypto_is_dead(alg)) | |
73d3864a | 226 | goto err; |
6bfd4809 HX |
227 | |
228 | INIT_LIST_HEAD(&alg->cra_users); | |
229 | ||
73d3864a HX |
230 | /* No cheating! */ |
231 | alg->cra_flags &= ~CRYPTO_ALG_TESTED; | |
232 | ||
6bfd4809 | 233 | ret = -EEXIST; |
4cc7720c | 234 | |
cce9e06d | 235 | list_for_each_entry(q, &crypto_alg_list, cra_list) { |
4cc7720c | 236 | if (q == alg) |
73d3864a HX |
237 | goto err; |
238 | ||
b8e15992 HX |
239 | if (crypto_is_moribund(q)) |
240 | continue; | |
241 | ||
73d3864a HX |
242 | if (crypto_is_larval(q)) { |
243 | if (!strcmp(alg->cra_driver_name, q->cra_driver_name)) | |
244 | goto err; | |
245 | continue; | |
246 | } | |
247 | ||
248 | if (!strcmp(q->cra_driver_name, alg->cra_name) || | |
249 | !strcmp(q->cra_name, alg->cra_driver_name)) | |
250 | goto err; | |
251 | } | |
252 | ||
253 | larval = crypto_larval_alloc(alg->cra_name, | |
254 | alg->cra_flags | CRYPTO_ALG_TESTED, 0); | |
255 | if (IS_ERR(larval)) | |
256 | goto out; | |
257 | ||
258 | ret = -ENOENT; | |
259 | larval->adult = crypto_mod_get(alg); | |
260 | if (!larval->adult) | |
261 | goto free_larval; | |
262 | ||
ce8614a3 | 263 | refcount_set(&larval->alg.cra_refcnt, 1); |
73d3864a HX |
264 | memcpy(larval->alg.cra_driver_name, alg->cra_driver_name, |
265 | CRYPTO_MAX_ALG_NAME); | |
266 | larval->alg.cra_priority = alg->cra_priority; | |
267 | ||
268 | list_add(&alg->cra_list, &crypto_alg_list); | |
269 | list_add(&larval->alg.cra_list, &crypto_alg_list); | |
270 | ||
1f6669b9 | 271 | crypto_stats_init(alg); |
cac5818c | 272 | |
5357c6c4 | 273 | out: |
73d3864a HX |
274 | return larval; |
275 | ||
276 | free_larval: | |
277 | kfree(larval); | |
278 | err: | |
279 | larval = ERR_PTR(ret); | |
280 | goto out; | |
281 | } | |
282 | ||
283 | void crypto_alg_tested(const char *name, int err) | |
284 | { | |
285 | struct crypto_larval *test; | |
286 | struct crypto_alg *alg; | |
287 | struct crypto_alg *q; | |
288 | LIST_HEAD(list); | |
2bbb3375 | 289 | bool best; |
73d3864a HX |
290 | |
291 | down_write(&crypto_alg_sem); | |
292 | list_for_each_entry(q, &crypto_alg_list, cra_list) { | |
b8e15992 | 293 | if (crypto_is_moribund(q) || !crypto_is_larval(q)) |
73d3864a HX |
294 | continue; |
295 | ||
296 | test = (struct crypto_larval *)q; | |
297 | ||
298 | if (!strcmp(q->cra_driver_name, name)) | |
299 | goto found; | |
300 | } | |
301 | ||
c7235857 | 302 | pr_err("alg: Unexpected test result for %s: %d\n", name, err); |
73d3864a HX |
303 | goto unlock; |
304 | ||
305 | found: | |
b8e15992 | 306 | q->cra_flags |= CRYPTO_ALG_DEAD; |
73d3864a HX |
307 | alg = test->adult; |
308 | if (err || list_empty(&alg->cra_list)) | |
309 | goto complete; | |
310 | ||
311 | alg->cra_flags |= CRYPTO_ALG_TESTED; | |
312 | ||
2bbb3375 HX |
313 | /* Only satisfy larval waiters if we are the best. */ |
314 | best = true; | |
315 | list_for_each_entry(q, &crypto_alg_list, cra_list) { | |
316 | if (crypto_is_moribund(q) || !crypto_is_larval(q)) | |
317 | continue; | |
318 | ||
319 | if (strcmp(alg->cra_name, q->cra_name)) | |
320 | continue; | |
321 | ||
322 | if (q->cra_priority > alg->cra_priority) { | |
323 | best = false; | |
324 | break; | |
325 | } | |
326 | } | |
327 | ||
73d3864a HX |
328 | list_for_each_entry(q, &crypto_alg_list, cra_list) { |
329 | if (q == alg) | |
330 | continue; | |
6bfd4809 HX |
331 | |
332 | if (crypto_is_moribund(q)) | |
333 | continue; | |
334 | ||
335 | if (crypto_is_larval(q)) { | |
2825982d HX |
336 | struct crypto_larval *larval = (void *)q; |
337 | ||
d8058480 HX |
338 | /* |
339 | * Check to see if either our generic name or | |
340 | * specific name can satisfy the name requested | |
341 | * by the larval entry q. | |
342 | */ | |
6bfd4809 HX |
343 | if (strcmp(alg->cra_name, q->cra_name) && |
344 | strcmp(alg->cra_driver_name, q->cra_name)) | |
345 | continue; | |
346 | ||
347 | if (larval->adult) | |
348 | continue; | |
492e2b63 HX |
349 | if ((q->cra_flags ^ alg->cra_flags) & larval->mask) |
350 | continue; | |
6bfd4809 | 351 | |
2bbb3375 HX |
352 | if (best && crypto_mod_get(alg)) |
353 | larval->adult = alg; | |
354 | else | |
355 | larval->adult = ERR_PTR(-EAGAIN); | |
356 | ||
6bfd4809 | 357 | continue; |
2825982d | 358 | } |
6bfd4809 HX |
359 | |
360 | if (strcmp(alg->cra_name, q->cra_name)) | |
361 | continue; | |
362 | ||
363 | if (strcmp(alg->cra_driver_name, q->cra_driver_name) && | |
364 | q->cra_priority > alg->cra_priority) | |
365 | continue; | |
366 | ||
2bf29016 | 367 | crypto_remove_spawns(q, &list, alg); |
cce9e06d | 368 | } |
2825982d | 369 | |
73d3864a HX |
370 | complete: |
371 | complete_all(&test->completion); | |
2825982d | 372 | |
73d3864a HX |
373 | unlock: |
374 | up_write(&crypto_alg_sem); | |
375 | ||
376 | crypto_remove_final(&list); | |
cce9e06d | 377 | } |
73d3864a | 378 | EXPORT_SYMBOL_GPL(crypto_alg_tested); |
4cc7720c | 379 | |
22e5b20b | 380 | void crypto_remove_final(struct list_head *list) |
6bfd4809 HX |
381 | { |
382 | struct crypto_alg *alg; | |
383 | struct crypto_alg *n; | |
384 | ||
385 | list_for_each_entry_safe(alg, n, list, cra_list) { | |
386 | list_del_init(&alg->cra_list); | |
387 | crypto_alg_put(alg); | |
388 | } | |
389 | } | |
22e5b20b | 390 | EXPORT_SYMBOL_GPL(crypto_remove_final); |
6bfd4809 | 391 | |
73d3864a HX |
392 | static void crypto_wait_for_test(struct crypto_larval *larval) |
393 | { | |
394 | int err; | |
395 | ||
396 | err = crypto_probing_notify(CRYPTO_MSG_ALG_REGISTER, larval->adult); | |
397 | if (err != NOTIFY_STOP) { | |
398 | if (WARN_ON(err != NOTIFY_DONE)) | |
399 | goto out; | |
400 | crypto_alg_tested(larval->alg.cra_driver_name, 0); | |
401 | } | |
402 | ||
3fc89adb | 403 | err = wait_for_completion_killable(&larval->completion); |
73d3864a | 404 | WARN_ON(err); |
dd8b083f | 405 | if (!err) |
beeb460c | 406 | crypto_notify(CRYPTO_MSG_ALG_LOADED, larval); |
73d3864a HX |
407 | |
408 | out: | |
409 | crypto_larval_kill(&larval->alg); | |
410 | } | |
411 | ||
4cc7720c HX |
412 | int crypto_register_alg(struct crypto_alg *alg) |
413 | { | |
73d3864a | 414 | struct crypto_larval *larval; |
4cc7720c HX |
415 | int err; |
416 | ||
d6040764 | 417 | alg->cra_flags &= ~CRYPTO_ALG_DEAD; |
4cc7720c HX |
418 | err = crypto_check_alg(alg); |
419 | if (err) | |
420 | return err; | |
421 | ||
422 | down_write(&crypto_alg_sem); | |
73d3864a | 423 | larval = __crypto_register_alg(alg); |
4cc7720c HX |
424 | up_write(&crypto_alg_sem); |
425 | ||
73d3864a HX |
426 | if (IS_ERR(larval)) |
427 | return PTR_ERR(larval); | |
428 | ||
429 | crypto_wait_for_test(larval); | |
430 | return 0; | |
4cc7720c | 431 | } |
cce9e06d HX |
432 | EXPORT_SYMBOL_GPL(crypto_register_alg); |
433 | ||
6bfd4809 HX |
434 | static int crypto_remove_alg(struct crypto_alg *alg, struct list_head *list) |
435 | { | |
436 | if (unlikely(list_empty(&alg->cra_list))) | |
437 | return -ENOENT; | |
438 | ||
439 | alg->cra_flags |= CRYPTO_ALG_DEAD; | |
440 | ||
6bfd4809 | 441 | list_del_init(&alg->cra_list); |
2bf29016 | 442 | crypto_remove_spawns(alg, list, NULL); |
6bfd4809 HX |
443 | |
444 | return 0; | |
445 | } | |
446 | ||
c6d633a9 | 447 | void crypto_unregister_alg(struct crypto_alg *alg) |
cce9e06d | 448 | { |
6bfd4809 HX |
449 | int ret; |
450 | LIST_HEAD(list); | |
5357c6c4 | 451 | |
cce9e06d | 452 | down_write(&crypto_alg_sem); |
6bfd4809 | 453 | ret = crypto_remove_alg(alg, &list); |
cce9e06d HX |
454 | up_write(&crypto_alg_sem); |
455 | ||
c6d633a9 EB |
456 | if (WARN(ret, "Algorithm %s is not registered", alg->cra_driver_name)) |
457 | return; | |
cce9e06d | 458 | |
ce8614a3 | 459 | BUG_ON(refcount_read(&alg->cra_refcnt) != 1); |
cce9e06d HX |
460 | if (alg->cra_destroy) |
461 | alg->cra_destroy(alg); | |
462 | ||
6bfd4809 | 463 | crypto_remove_final(&list); |
cce9e06d HX |
464 | } |
465 | EXPORT_SYMBOL_GPL(crypto_unregister_alg); | |
466 | ||
4b004346 MB |
467 | int crypto_register_algs(struct crypto_alg *algs, int count) |
468 | { | |
469 | int i, ret; | |
470 | ||
471 | for (i = 0; i < count; i++) { | |
472 | ret = crypto_register_alg(&algs[i]); | |
473 | if (ret) | |
474 | goto err; | |
475 | } | |
476 | ||
477 | return 0; | |
478 | ||
479 | err: | |
480 | for (--i; i >= 0; --i) | |
481 | crypto_unregister_alg(&algs[i]); | |
482 | ||
483 | return ret; | |
484 | } | |
485 | EXPORT_SYMBOL_GPL(crypto_register_algs); | |
486 | ||
c6d633a9 | 487 | void crypto_unregister_algs(struct crypto_alg *algs, int count) |
4b004346 | 488 | { |
c6d633a9 | 489 | int i; |
4b004346 | 490 | |
c6d633a9 EB |
491 | for (i = 0; i < count; i++) |
492 | crypto_unregister_alg(&algs[i]); | |
4b004346 MB |
493 | } |
494 | EXPORT_SYMBOL_GPL(crypto_unregister_algs); | |
495 | ||
4cc7720c HX |
496 | int crypto_register_template(struct crypto_template *tmpl) |
497 | { | |
498 | struct crypto_template *q; | |
499 | int err = -EEXIST; | |
500 | ||
501 | down_write(&crypto_alg_sem); | |
502 | ||
002c77a4 JW |
503 | crypto_check_module_sig(tmpl->module); |
504 | ||
4cc7720c HX |
505 | list_for_each_entry(q, &crypto_template_list, list) { |
506 | if (q == tmpl) | |
507 | goto out; | |
508 | } | |
509 | ||
510 | list_add(&tmpl->list, &crypto_template_list); | |
511 | err = 0; | |
512 | out: | |
513 | up_write(&crypto_alg_sem); | |
514 | return err; | |
515 | } | |
516 | EXPORT_SYMBOL_GPL(crypto_register_template); | |
517 | ||
9572442d XW |
518 | int crypto_register_templates(struct crypto_template *tmpls, int count) |
519 | { | |
520 | int i, err; | |
521 | ||
522 | for (i = 0; i < count; i++) { | |
523 | err = crypto_register_template(&tmpls[i]); | |
524 | if (err) | |
525 | goto out; | |
526 | } | |
527 | return 0; | |
528 | ||
529 | out: | |
530 | for (--i; i >= 0; --i) | |
531 | crypto_unregister_template(&tmpls[i]); | |
532 | return err; | |
533 | } | |
534 | EXPORT_SYMBOL_GPL(crypto_register_templates); | |
535 | ||
4cc7720c HX |
536 | void crypto_unregister_template(struct crypto_template *tmpl) |
537 | { | |
538 | struct crypto_instance *inst; | |
b67bfe0d | 539 | struct hlist_node *n; |
4cc7720c | 540 | struct hlist_head *list; |
6bfd4809 | 541 | LIST_HEAD(users); |
4cc7720c HX |
542 | |
543 | down_write(&crypto_alg_sem); | |
544 | ||
545 | BUG_ON(list_empty(&tmpl->list)); | |
546 | list_del_init(&tmpl->list); | |
547 | ||
548 | list = &tmpl->instances; | |
b67bfe0d | 549 | hlist_for_each_entry(inst, list, list) { |
6bfd4809 | 550 | int err = crypto_remove_alg(&inst->alg, &users); |
0efcb8d5 | 551 | |
6bfd4809 | 552 | BUG_ON(err); |
4cc7720c HX |
553 | } |
554 | ||
555 | up_write(&crypto_alg_sem); | |
556 | ||
b67bfe0d | 557 | hlist_for_each_entry_safe(inst, n, list, list) { |
ce8614a3 | 558 | BUG_ON(refcount_read(&inst->alg.cra_refcnt) != 1); |
319382a6 | 559 | crypto_free_instance(inst); |
4cc7720c | 560 | } |
6bfd4809 | 561 | crypto_remove_final(&users); |
4cc7720c HX |
562 | } |
563 | EXPORT_SYMBOL_GPL(crypto_unregister_template); | |
564 | ||
9572442d XW |
565 | void crypto_unregister_templates(struct crypto_template *tmpls, int count) |
566 | { | |
567 | int i; | |
568 | ||
569 | for (i = count - 1; i >= 0; --i) | |
570 | crypto_unregister_template(&tmpls[i]); | |
571 | } | |
572 | EXPORT_SYMBOL_GPL(crypto_unregister_templates); | |
573 | ||
4cc7720c HX |
574 | static struct crypto_template *__crypto_lookup_template(const char *name) |
575 | { | |
576 | struct crypto_template *q, *tmpl = NULL; | |
577 | ||
578 | down_read(&crypto_alg_sem); | |
579 | list_for_each_entry(q, &crypto_template_list, list) { | |
580 | if (strcmp(q->name, name)) | |
581 | continue; | |
582 | if (unlikely(!crypto_tmpl_get(q))) | |
583 | continue; | |
584 | ||
585 | tmpl = q; | |
586 | break; | |
587 | } | |
588 | up_read(&crypto_alg_sem); | |
589 | ||
590 | return tmpl; | |
591 | } | |
592 | ||
593 | struct crypto_template *crypto_lookup_template(const char *name) | |
594 | { | |
4943ba16 KC |
595 | return try_then_request_module(__crypto_lookup_template(name), |
596 | "crypto-%s", name); | |
4cc7720c HX |
597 | } |
598 | EXPORT_SYMBOL_GPL(crypto_lookup_template); | |
599 | ||
600 | int crypto_register_instance(struct crypto_template *tmpl, | |
601 | struct crypto_instance *inst) | |
602 | { | |
73d3864a | 603 | struct crypto_larval *larval; |
5f567fff | 604 | struct crypto_spawn *spawn; |
73d3864a | 605 | int err; |
4cc7720c | 606 | |
4cc7720c HX |
607 | err = crypto_check_alg(&inst->alg); |
608 | if (err) | |
9c521a20 SM |
609 | return err; |
610 | ||
4cc7720c | 611 | inst->alg.cra_module = tmpl->module; |
64a947b1 | 612 | inst->alg.cra_flags |= CRYPTO_ALG_INSTANCE; |
4cc7720c HX |
613 | |
614 | down_write(&crypto_alg_sem); | |
615 | ||
5f567fff HX |
616 | larval = ERR_PTR(-EAGAIN); |
617 | for (spawn = inst->spawns; spawn;) { | |
618 | struct crypto_spawn *next; | |
619 | ||
620 | if (spawn->dead) | |
621 | goto unlock; | |
622 | ||
623 | next = spawn->next; | |
624 | spawn->inst = inst; | |
625 | spawn->registered = true; | |
626 | ||
aed11cf5 | 627 | crypto_mod_put(spawn->alg); |
5f567fff HX |
628 | |
629 | spawn = next; | |
630 | } | |
631 | ||
73d3864a HX |
632 | larval = __crypto_register_alg(&inst->alg); |
633 | if (IS_ERR(larval)) | |
4cc7720c HX |
634 | goto unlock; |
635 | ||
636 | hlist_add_head(&inst->list, &tmpl->instances); | |
637 | inst->tmpl = tmpl; | |
638 | ||
639 | unlock: | |
640 | up_write(&crypto_alg_sem); | |
641 | ||
73d3864a HX |
642 | err = PTR_ERR(larval); |
643 | if (IS_ERR(larval)) | |
644 | goto err; | |
645 | ||
646 | crypto_wait_for_test(larval); | |
647 | err = 0; | |
6bfd4809 | 648 | |
4cc7720c HX |
649 | err: |
650 | return err; | |
651 | } | |
652 | EXPORT_SYMBOL_GPL(crypto_register_instance); | |
ce3fd840 | 653 | |
c6d633a9 | 654 | void crypto_unregister_instance(struct crypto_instance *inst) |
ce3fd840 | 655 | { |
1f723710 | 656 | LIST_HEAD(list); |
ce3fd840 | 657 | |
ce3fd840 SK |
658 | down_write(&crypto_alg_sem); |
659 | ||
87b16756 | 660 | crypto_remove_spawns(&inst->alg, &list, NULL); |
1f723710 | 661 | crypto_remove_instance(inst, &list); |
ce3fd840 SK |
662 | |
663 | up_write(&crypto_alg_sem); | |
664 | ||
1f723710 | 665 | crypto_remove_final(&list); |
ce3fd840 SK |
666 | } |
667 | EXPORT_SYMBOL_GPL(crypto_unregister_instance); | |
4cc7720c | 668 | |
aed11cf5 EB |
669 | int crypto_grab_spawn(struct crypto_spawn *spawn, struct crypto_instance *inst, |
670 | const char *name, u32 type, u32 mask) | |
6bfd4809 | 671 | { |
aed11cf5 | 672 | struct crypto_alg *alg; |
6bfd4809 HX |
673 | int err = -EAGAIN; |
674 | ||
6b476662 EB |
675 | if (WARN_ON_ONCE(inst == NULL)) |
676 | return -EINVAL; | |
677 | ||
aed11cf5 EB |
678 | /* Allow the result of crypto_attr_alg_name() to be passed directly */ |
679 | if (IS_ERR(name)) | |
680 | return PTR_ERR(name); | |
5f567fff | 681 | |
aed11cf5 EB |
682 | alg = crypto_find_alg(name, spawn->frontend, type, mask); |
683 | if (IS_ERR(alg)) | |
684 | return PTR_ERR(alg); | |
6bfd4809 HX |
685 | |
686 | down_write(&crypto_alg_sem); | |
687 | if (!crypto_is_moribund(alg)) { | |
688 | list_add(&spawn->list, &alg->cra_users); | |
689 | spawn->alg = alg; | |
aed11cf5 EB |
690 | spawn->mask = mask; |
691 | spawn->next = inst->spawns; | |
692 | inst->spawns = spawn; | |
6bfd4809 HX |
693 | err = 0; |
694 | } | |
695 | up_write(&crypto_alg_sem); | |
5f567fff HX |
696 | if (err) |
697 | crypto_mod_put(alg); | |
d6ef2f19 HX |
698 | return err; |
699 | } | |
700 | EXPORT_SYMBOL_GPL(crypto_grab_spawn); | |
701 | ||
6bfd4809 HX |
702 | void crypto_drop_spawn(struct crypto_spawn *spawn) |
703 | { | |
ff670627 EB |
704 | if (!spawn->alg) /* not yet initialized? */ |
705 | return; | |
706 | ||
6bfd4809 | 707 | down_write(&crypto_alg_sem); |
4f87ee11 | 708 | if (!spawn->dead) |
7db3b61b | 709 | list_del(&spawn->list); |
6bfd4809 | 710 | up_write(&crypto_alg_sem); |
5f567fff | 711 | |
aed11cf5 | 712 | if (!spawn->registered) |
5f567fff | 713 | crypto_mod_put(spawn->alg); |
6bfd4809 HX |
714 | } |
715 | EXPORT_SYMBOL_GPL(crypto_drop_spawn); | |
716 | ||
97eedce1 | 717 | static struct crypto_alg *crypto_spawn_alg(struct crypto_spawn *spawn) |
6bfd4809 | 718 | { |
6603523b HX |
719 | struct crypto_alg *alg = ERR_PTR(-EAGAIN); |
720 | struct crypto_alg *target; | |
721 | bool shoot = false; | |
6bfd4809 HX |
722 | |
723 | down_read(&crypto_alg_sem); | |
6603523b HX |
724 | if (!spawn->dead) { |
725 | alg = spawn->alg; | |
726 | if (!crypto_mod_get(alg)) { | |
727 | target = crypto_alg_get(alg); | |
728 | shoot = true; | |
729 | alg = ERR_PTR(-EAGAIN); | |
730 | } | |
6bfd4809 | 731 | } |
73669cc5 | 732 | up_read(&crypto_alg_sem); |
6bfd4809 | 733 | |
6603523b HX |
734 | if (shoot) { |
735 | crypto_shoot_alg(target); | |
736 | crypto_alg_put(target); | |
737 | } | |
738 | ||
739 | return alg; | |
97eedce1 HX |
740 | } |
741 | ||
742 | struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn, u32 type, | |
743 | u32 mask) | |
744 | { | |
745 | struct crypto_alg *alg; | |
746 | struct crypto_tfm *tfm; | |
747 | ||
748 | alg = crypto_spawn_alg(spawn); | |
749 | if (IS_ERR(alg)) | |
750 | return ERR_CAST(alg); | |
751 | ||
2e306ee0 HX |
752 | tfm = ERR_PTR(-EINVAL); |
753 | if (unlikely((alg->cra_flags ^ type) & mask)) | |
754 | goto out_put_alg; | |
755 | ||
27d2a330 | 756 | tfm = __crypto_alloc_tfm(alg, type, mask); |
6bfd4809 | 757 | if (IS_ERR(tfm)) |
2e306ee0 HX |
758 | goto out_put_alg; |
759 | ||
760 | return tfm; | |
6bfd4809 | 761 | |
2e306ee0 HX |
762 | out_put_alg: |
763 | crypto_mod_put(alg); | |
6bfd4809 HX |
764 | return tfm; |
765 | } | |
766 | EXPORT_SYMBOL_GPL(crypto_spawn_tfm); | |
767 | ||
97eedce1 HX |
768 | void *crypto_spawn_tfm2(struct crypto_spawn *spawn) |
769 | { | |
770 | struct crypto_alg *alg; | |
771 | struct crypto_tfm *tfm; | |
772 | ||
773 | alg = crypto_spawn_alg(spawn); | |
774 | if (IS_ERR(alg)) | |
775 | return ERR_CAST(alg); | |
776 | ||
777 | tfm = crypto_create_tfm(alg, spawn->frontend); | |
778 | if (IS_ERR(tfm)) | |
779 | goto out_put_alg; | |
780 | ||
781 | return tfm; | |
782 | ||
783 | out_put_alg: | |
784 | crypto_mod_put(alg); | |
785 | return tfm; | |
786 | } | |
787 | EXPORT_SYMBOL_GPL(crypto_spawn_tfm2); | |
788 | ||
2825982d HX |
789 | int crypto_register_notifier(struct notifier_block *nb) |
790 | { | |
791 | return blocking_notifier_chain_register(&crypto_chain, nb); | |
792 | } | |
793 | EXPORT_SYMBOL_GPL(crypto_register_notifier); | |
794 | ||
795 | int crypto_unregister_notifier(struct notifier_block *nb) | |
796 | { | |
797 | return blocking_notifier_chain_unregister(&crypto_chain, nb); | |
798 | } | |
799 | EXPORT_SYMBOL_GPL(crypto_unregister_notifier); | |
800 | ||
ebc610e5 | 801 | struct crypto_attr_type *crypto_get_attr_type(struct rtattr **tb) |
7fed0bf2 | 802 | { |
39e1ee01 | 803 | struct rtattr *rta = tb[0]; |
ebc610e5 HX |
804 | struct crypto_attr_type *algt; |
805 | ||
806 | if (!rta) | |
807 | return ERR_PTR(-ENOENT); | |
808 | if (RTA_PAYLOAD(rta) < sizeof(*algt)) | |
809 | return ERR_PTR(-EINVAL); | |
39e1ee01 HX |
810 | if (rta->rta_type != CRYPTOA_TYPE) |
811 | return ERR_PTR(-EINVAL); | |
ebc610e5 HX |
812 | |
813 | algt = RTA_DATA(rta); | |
814 | ||
815 | return algt; | |
816 | } | |
817 | EXPORT_SYMBOL_GPL(crypto_get_attr_type); | |
818 | ||
819 | int crypto_check_attr_type(struct rtattr **tb, u32 type) | |
820 | { | |
821 | struct crypto_attr_type *algt; | |
822 | ||
823 | algt = crypto_get_attr_type(tb); | |
824 | if (IS_ERR(algt)) | |
825 | return PTR_ERR(algt); | |
826 | ||
827 | if ((algt->type ^ type) & algt->mask) | |
828 | return -EINVAL; | |
829 | ||
830 | return 0; | |
831 | } | |
832 | EXPORT_SYMBOL_GPL(crypto_check_attr_type); | |
833 | ||
68b6c7d6 | 834 | const char *crypto_attr_alg_name(struct rtattr *rta) |
ebc610e5 | 835 | { |
7fed0bf2 HX |
836 | struct crypto_attr_alg *alga; |
837 | ||
ebc610e5 HX |
838 | if (!rta) |
839 | return ERR_PTR(-ENOENT); | |
840 | if (RTA_PAYLOAD(rta) < sizeof(*alga)) | |
7fed0bf2 | 841 | return ERR_PTR(-EINVAL); |
39e1ee01 HX |
842 | if (rta->rta_type != CRYPTOA_ALG) |
843 | return ERR_PTR(-EINVAL); | |
7fed0bf2 HX |
844 | |
845 | alga = RTA_DATA(rta); | |
846 | alga->name[CRYPTO_MAX_ALG_NAME - 1] = 0; | |
847 | ||
68b6c7d6 HX |
848 | return alga->name; |
849 | } | |
850 | EXPORT_SYMBOL_GPL(crypto_attr_alg_name); | |
851 | ||
3c09f17c HX |
852 | int crypto_attr_u32(struct rtattr *rta, u32 *num) |
853 | { | |
854 | struct crypto_attr_u32 *nu32; | |
855 | ||
856 | if (!rta) | |
857 | return -ENOENT; | |
858 | if (RTA_PAYLOAD(rta) < sizeof(*nu32)) | |
859 | return -EINVAL; | |
860 | if (rta->rta_type != CRYPTOA_U32) | |
861 | return -EINVAL; | |
862 | ||
863 | nu32 = RTA_DATA(rta); | |
864 | *num = nu32->num; | |
865 | ||
866 | return 0; | |
867 | } | |
868 | EXPORT_SYMBOL_GPL(crypto_attr_u32); | |
7fed0bf2 | 869 | |
32f27c74 HX |
870 | int crypto_inst_setname(struct crypto_instance *inst, const char *name, |
871 | struct crypto_alg *alg) | |
872 | { | |
873 | if (snprintf(inst->alg.cra_name, CRYPTO_MAX_ALG_NAME, "%s(%s)", name, | |
874 | alg->cra_name) >= CRYPTO_MAX_ALG_NAME) | |
875 | return -ENAMETOOLONG; | |
876 | ||
877 | if (snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s(%s)", | |
878 | name, alg->cra_driver_name) >= CRYPTO_MAX_ALG_NAME) | |
879 | return -ENAMETOOLONG; | |
880 | ||
881 | return 0; | |
882 | } | |
883 | EXPORT_SYMBOL_GPL(crypto_inst_setname); | |
884 | ||
b5b7f088 HX |
885 | void crypto_init_queue(struct crypto_queue *queue, unsigned int max_qlen) |
886 | { | |
887 | INIT_LIST_HEAD(&queue->list); | |
888 | queue->backlog = &queue->list; | |
889 | queue->qlen = 0; | |
890 | queue->max_qlen = max_qlen; | |
891 | } | |
892 | EXPORT_SYMBOL_GPL(crypto_init_queue); | |
893 | ||
894 | int crypto_enqueue_request(struct crypto_queue *queue, | |
895 | struct crypto_async_request *request) | |
896 | { | |
897 | int err = -EINPROGRESS; | |
898 | ||
899 | if (unlikely(queue->qlen >= queue->max_qlen)) { | |
6b80ea38 GBY |
900 | if (!(request->flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) { |
901 | err = -ENOSPC; | |
b5b7f088 | 902 | goto out; |
6b80ea38 GBY |
903 | } |
904 | err = -EBUSY; | |
b5b7f088 HX |
905 | if (queue->backlog == &queue->list) |
906 | queue->backlog = &request->list; | |
907 | } | |
908 | ||
909 | queue->qlen++; | |
910 | list_add_tail(&request->list, &queue->list); | |
911 | ||
912 | out: | |
913 | return err; | |
914 | } | |
915 | EXPORT_SYMBOL_GPL(crypto_enqueue_request); | |
916 | ||
ec6e2bf3 IP |
917 | void crypto_enqueue_request_head(struct crypto_queue *queue, |
918 | struct crypto_async_request *request) | |
919 | { | |
920 | queue->qlen++; | |
921 | list_add(&request->list, &queue->list); | |
922 | } | |
923 | EXPORT_SYMBOL_GPL(crypto_enqueue_request_head); | |
924 | ||
31d228cc | 925 | struct crypto_async_request *crypto_dequeue_request(struct crypto_queue *queue) |
b5b7f088 HX |
926 | { |
927 | struct list_head *request; | |
928 | ||
929 | if (unlikely(!queue->qlen)) | |
930 | return NULL; | |
931 | ||
932 | queue->qlen--; | |
933 | ||
934 | if (queue->backlog != &queue->list) | |
935 | queue->backlog = queue->backlog->next; | |
936 | ||
937 | request = queue->list.next; | |
938 | list_del(request); | |
939 | ||
31d228cc | 940 | return list_entry(request, struct crypto_async_request, list); |
b5b7f088 HX |
941 | } |
942 | EXPORT_SYMBOL_GPL(crypto_dequeue_request); | |
943 | ||
7613636d HX |
944 | static inline void crypto_inc_byte(u8 *a, unsigned int size) |
945 | { | |
946 | u8 *b = (a + size); | |
947 | u8 c; | |
948 | ||
949 | for (; size; size--) { | |
950 | c = *--b + 1; | |
951 | *b = c; | |
952 | if (c) | |
953 | break; | |
954 | } | |
955 | } | |
956 | ||
957 | void crypto_inc(u8 *a, unsigned int size) | |
958 | { | |
959 | __be32 *b = (__be32 *)(a + size); | |
960 | u32 c; | |
961 | ||
db91af0f | 962 | if (IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) || |
27c539ae | 963 | IS_ALIGNED((unsigned long)b, __alignof__(*b))) |
db91af0f AB |
964 | for (; size >= 4; size -= 4) { |
965 | c = be32_to_cpu(*--b) + 1; | |
966 | *b = cpu_to_be32(c); | |
27c539ae | 967 | if (likely(c)) |
db91af0f AB |
968 | return; |
969 | } | |
7613636d HX |
970 | |
971 | crypto_inc_byte(a, size); | |
972 | } | |
973 | EXPORT_SYMBOL_GPL(crypto_inc); | |
974 | ||
a7c391f0 | 975 | void __crypto_xor(u8 *dst, const u8 *src1, const u8 *src2, unsigned int len) |
7613636d | 976 | { |
db91af0f AB |
977 | int relalign = 0; |
978 | ||
979 | if (!IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)) { | |
980 | int size = sizeof(unsigned long); | |
a7c391f0 AB |
981 | int d = (((unsigned long)dst ^ (unsigned long)src1) | |
982 | ((unsigned long)dst ^ (unsigned long)src2)) & | |
983 | (size - 1); | |
db91af0f AB |
984 | |
985 | relalign = d ? 1 << __ffs(d) : size; | |
986 | ||
987 | /* | |
988 | * If we care about alignment, process as many bytes as | |
989 | * needed to advance dst and src to values whose alignments | |
990 | * equal their relative alignment. This will allow us to | |
991 | * process the remainder of the input using optimal strides. | |
992 | */ | |
993 | while (((unsigned long)dst & (relalign - 1)) && len > 0) { | |
a7c391f0 | 994 | *dst++ = *src1++ ^ *src2++; |
db91af0f AB |
995 | len--; |
996 | } | |
997 | } | |
7613636d | 998 | |
db91af0f | 999 | while (IS_ENABLED(CONFIG_64BIT) && len >= 8 && !(relalign & 7)) { |
a7c391f0 | 1000 | *(u64 *)dst = *(u64 *)src1 ^ *(u64 *)src2; |
db91af0f | 1001 | dst += 8; |
a7c391f0 AB |
1002 | src1 += 8; |
1003 | src2 += 8; | |
db91af0f AB |
1004 | len -= 8; |
1005 | } | |
7613636d | 1006 | |
db91af0f | 1007 | while (len >= 4 && !(relalign & 3)) { |
a7c391f0 | 1008 | *(u32 *)dst = *(u32 *)src1 ^ *(u32 *)src2; |
db91af0f | 1009 | dst += 4; |
a7c391f0 AB |
1010 | src1 += 4; |
1011 | src2 += 4; | |
db91af0f AB |
1012 | len -= 4; |
1013 | } | |
1014 | ||
1015 | while (len >= 2 && !(relalign & 1)) { | |
a7c391f0 | 1016 | *(u16 *)dst = *(u16 *)src1 ^ *(u16 *)src2; |
db91af0f | 1017 | dst += 2; |
a7c391f0 AB |
1018 | src1 += 2; |
1019 | src2 += 2; | |
db91af0f AB |
1020 | len -= 2; |
1021 | } | |
7613636d | 1022 | |
db91af0f | 1023 | while (len--) |
a7c391f0 | 1024 | *dst++ = *src1++ ^ *src2++; |
7613636d | 1025 | } |
db91af0f | 1026 | EXPORT_SYMBOL_GPL(__crypto_xor); |
7613636d | 1027 | |
38d21433 HX |
1028 | unsigned int crypto_alg_extsize(struct crypto_alg *alg) |
1029 | { | |
c2110f28 HX |
1030 | return alg->cra_ctxsize + |
1031 | (alg->cra_alignmask & ~(crypto_tfm_ctx_alignment() - 1)); | |
38d21433 HX |
1032 | } |
1033 | EXPORT_SYMBOL_GPL(crypto_alg_extsize); | |
1034 | ||
f2aefdab HX |
1035 | int crypto_type_has_alg(const char *name, const struct crypto_type *frontend, |
1036 | u32 type, u32 mask) | |
1037 | { | |
1038 | int ret = 0; | |
1039 | struct crypto_alg *alg = crypto_find_alg(name, frontend, type, mask); | |
1040 | ||
1041 | if (!IS_ERR(alg)) { | |
1042 | crypto_mod_put(alg); | |
1043 | ret = 1; | |
1044 | } | |
1045 | ||
1046 | return ret; | |
1047 | } | |
1048 | EXPORT_SYMBOL_GPL(crypto_type_has_alg); | |
1049 | ||
f7d76e05 | 1050 | #ifdef CONFIG_CRYPTO_STATS |
1f6669b9 CL |
1051 | void crypto_stats_init(struct crypto_alg *alg) |
1052 | { | |
1053 | memset(&alg->stats, 0, sizeof(alg->stats)); | |
1054 | } | |
1055 | EXPORT_SYMBOL_GPL(crypto_stats_init); | |
1056 | ||
f7d76e05 CL |
1057 | void crypto_stats_get(struct crypto_alg *alg) |
1058 | { | |
1059 | crypto_alg_get(alg); | |
1060 | } | |
1061 | EXPORT_SYMBOL_GPL(crypto_stats_get); | |
1062 | ||
f7d76e05 CL |
1063 | void crypto_stats_aead_encrypt(unsigned int cryptlen, struct crypto_alg *alg, |
1064 | int ret) | |
1065 | { | |
1066 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1067 | atomic64_inc(&alg->stats.aead.err_cnt); |
f7d76e05 | 1068 | } else { |
17c18f9e CL |
1069 | atomic64_inc(&alg->stats.aead.encrypt_cnt); |
1070 | atomic64_add(cryptlen, &alg->stats.aead.encrypt_tlen); | |
f7d76e05 CL |
1071 | } |
1072 | crypto_alg_put(alg); | |
1073 | } | |
1074 | EXPORT_SYMBOL_GPL(crypto_stats_aead_encrypt); | |
1075 | ||
1076 | void crypto_stats_aead_decrypt(unsigned int cryptlen, struct crypto_alg *alg, | |
1077 | int ret) | |
1078 | { | |
1079 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1080 | atomic64_inc(&alg->stats.aead.err_cnt); |
f7d76e05 | 1081 | } else { |
17c18f9e CL |
1082 | atomic64_inc(&alg->stats.aead.decrypt_cnt); |
1083 | atomic64_add(cryptlen, &alg->stats.aead.decrypt_tlen); | |
f7d76e05 CL |
1084 | } |
1085 | crypto_alg_put(alg); | |
1086 | } | |
1087 | EXPORT_SYMBOL_GPL(crypto_stats_aead_decrypt); | |
1088 | ||
1089 | void crypto_stats_akcipher_encrypt(unsigned int src_len, int ret, | |
1090 | struct crypto_alg *alg) | |
1091 | { | |
1092 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1093 | atomic64_inc(&alg->stats.akcipher.err_cnt); |
f7d76e05 | 1094 | } else { |
17c18f9e CL |
1095 | atomic64_inc(&alg->stats.akcipher.encrypt_cnt); |
1096 | atomic64_add(src_len, &alg->stats.akcipher.encrypt_tlen); | |
f7d76e05 CL |
1097 | } |
1098 | crypto_alg_put(alg); | |
1099 | } | |
1100 | EXPORT_SYMBOL_GPL(crypto_stats_akcipher_encrypt); | |
1101 | ||
1102 | void crypto_stats_akcipher_decrypt(unsigned int src_len, int ret, | |
1103 | struct crypto_alg *alg) | |
1104 | { | |
1105 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1106 | atomic64_inc(&alg->stats.akcipher.err_cnt); |
f7d76e05 | 1107 | } else { |
17c18f9e CL |
1108 | atomic64_inc(&alg->stats.akcipher.decrypt_cnt); |
1109 | atomic64_add(src_len, &alg->stats.akcipher.decrypt_tlen); | |
f7d76e05 CL |
1110 | } |
1111 | crypto_alg_put(alg); | |
1112 | } | |
1113 | EXPORT_SYMBOL_GPL(crypto_stats_akcipher_decrypt); | |
1114 | ||
1115 | void crypto_stats_akcipher_sign(int ret, struct crypto_alg *alg) | |
1116 | { | |
1117 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) | |
44f13133 | 1118 | atomic64_inc(&alg->stats.akcipher.err_cnt); |
f7d76e05 | 1119 | else |
17c18f9e | 1120 | atomic64_inc(&alg->stats.akcipher.sign_cnt); |
f7d76e05 CL |
1121 | crypto_alg_put(alg); |
1122 | } | |
1123 | EXPORT_SYMBOL_GPL(crypto_stats_akcipher_sign); | |
1124 | ||
1125 | void crypto_stats_akcipher_verify(int ret, struct crypto_alg *alg) | |
1126 | { | |
1127 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) | |
44f13133 | 1128 | atomic64_inc(&alg->stats.akcipher.err_cnt); |
f7d76e05 | 1129 | else |
17c18f9e | 1130 | atomic64_inc(&alg->stats.akcipher.verify_cnt); |
f7d76e05 CL |
1131 | crypto_alg_put(alg); |
1132 | } | |
1133 | EXPORT_SYMBOL_GPL(crypto_stats_akcipher_verify); | |
1134 | ||
1135 | void crypto_stats_compress(unsigned int slen, int ret, struct crypto_alg *alg) | |
1136 | { | |
1137 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1138 | atomic64_inc(&alg->stats.compress.err_cnt); |
f7d76e05 | 1139 | } else { |
17c18f9e CL |
1140 | atomic64_inc(&alg->stats.compress.compress_cnt); |
1141 | atomic64_add(slen, &alg->stats.compress.compress_tlen); | |
f7d76e05 CL |
1142 | } |
1143 | crypto_alg_put(alg); | |
1144 | } | |
1145 | EXPORT_SYMBOL_GPL(crypto_stats_compress); | |
1146 | ||
1147 | void crypto_stats_decompress(unsigned int slen, int ret, struct crypto_alg *alg) | |
1148 | { | |
1149 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1150 | atomic64_inc(&alg->stats.compress.err_cnt); |
f7d76e05 | 1151 | } else { |
17c18f9e CL |
1152 | atomic64_inc(&alg->stats.compress.decompress_cnt); |
1153 | atomic64_add(slen, &alg->stats.compress.decompress_tlen); | |
f7d76e05 CL |
1154 | } |
1155 | crypto_alg_put(alg); | |
1156 | } | |
1157 | EXPORT_SYMBOL_GPL(crypto_stats_decompress); | |
1158 | ||
1159 | void crypto_stats_ahash_update(unsigned int nbytes, int ret, | |
1160 | struct crypto_alg *alg) | |
1161 | { | |
1162 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) | |
44f13133 | 1163 | atomic64_inc(&alg->stats.hash.err_cnt); |
f7d76e05 | 1164 | else |
17c18f9e | 1165 | atomic64_add(nbytes, &alg->stats.hash.hash_tlen); |
f7d76e05 CL |
1166 | crypto_alg_put(alg); |
1167 | } | |
1168 | EXPORT_SYMBOL_GPL(crypto_stats_ahash_update); | |
1169 | ||
1170 | void crypto_stats_ahash_final(unsigned int nbytes, int ret, | |
1171 | struct crypto_alg *alg) | |
1172 | { | |
1173 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1174 | atomic64_inc(&alg->stats.hash.err_cnt); |
f7d76e05 | 1175 | } else { |
17c18f9e CL |
1176 | atomic64_inc(&alg->stats.hash.hash_cnt); |
1177 | atomic64_add(nbytes, &alg->stats.hash.hash_tlen); | |
f7d76e05 CL |
1178 | } |
1179 | crypto_alg_put(alg); | |
1180 | } | |
1181 | EXPORT_SYMBOL_GPL(crypto_stats_ahash_final); | |
1182 | ||
1183 | void crypto_stats_kpp_set_secret(struct crypto_alg *alg, int ret) | |
1184 | { | |
1185 | if (ret) | |
44f13133 | 1186 | atomic64_inc(&alg->stats.kpp.err_cnt); |
f7d76e05 | 1187 | else |
17c18f9e | 1188 | atomic64_inc(&alg->stats.kpp.setsecret_cnt); |
f7d76e05 CL |
1189 | crypto_alg_put(alg); |
1190 | } | |
1191 | EXPORT_SYMBOL_GPL(crypto_stats_kpp_set_secret); | |
1192 | ||
1193 | void crypto_stats_kpp_generate_public_key(struct crypto_alg *alg, int ret) | |
1194 | { | |
1195 | if (ret) | |
44f13133 | 1196 | atomic64_inc(&alg->stats.kpp.err_cnt); |
f7d76e05 | 1197 | else |
17c18f9e | 1198 | atomic64_inc(&alg->stats.kpp.generate_public_key_cnt); |
f7d76e05 CL |
1199 | crypto_alg_put(alg); |
1200 | } | |
1201 | EXPORT_SYMBOL_GPL(crypto_stats_kpp_generate_public_key); | |
1202 | ||
1203 | void crypto_stats_kpp_compute_shared_secret(struct crypto_alg *alg, int ret) | |
1204 | { | |
1205 | if (ret) | |
44f13133 | 1206 | atomic64_inc(&alg->stats.kpp.err_cnt); |
f7d76e05 | 1207 | else |
17c18f9e | 1208 | atomic64_inc(&alg->stats.kpp.compute_shared_secret_cnt); |
f7d76e05 CL |
1209 | crypto_alg_put(alg); |
1210 | } | |
1211 | EXPORT_SYMBOL_GPL(crypto_stats_kpp_compute_shared_secret); | |
1212 | ||
1213 | void crypto_stats_rng_seed(struct crypto_alg *alg, int ret) | |
1214 | { | |
1215 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) | |
44f13133 | 1216 | atomic64_inc(&alg->stats.rng.err_cnt); |
f7d76e05 | 1217 | else |
17c18f9e | 1218 | atomic64_inc(&alg->stats.rng.seed_cnt); |
f7d76e05 CL |
1219 | crypto_alg_put(alg); |
1220 | } | |
1221 | EXPORT_SYMBOL_GPL(crypto_stats_rng_seed); | |
1222 | ||
1223 | void crypto_stats_rng_generate(struct crypto_alg *alg, unsigned int dlen, | |
1224 | int ret) | |
1225 | { | |
1226 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1227 | atomic64_inc(&alg->stats.rng.err_cnt); |
f7d76e05 | 1228 | } else { |
17c18f9e CL |
1229 | atomic64_inc(&alg->stats.rng.generate_cnt); |
1230 | atomic64_add(dlen, &alg->stats.rng.generate_tlen); | |
f7d76e05 CL |
1231 | } |
1232 | crypto_alg_put(alg); | |
1233 | } | |
1234 | EXPORT_SYMBOL_GPL(crypto_stats_rng_generate); | |
1235 | ||
1236 | void crypto_stats_skcipher_encrypt(unsigned int cryptlen, int ret, | |
1237 | struct crypto_alg *alg) | |
1238 | { | |
1239 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1240 | atomic64_inc(&alg->stats.cipher.err_cnt); |
f7d76e05 | 1241 | } else { |
17c18f9e CL |
1242 | atomic64_inc(&alg->stats.cipher.encrypt_cnt); |
1243 | atomic64_add(cryptlen, &alg->stats.cipher.encrypt_tlen); | |
f7d76e05 CL |
1244 | } |
1245 | crypto_alg_put(alg); | |
1246 | } | |
1247 | EXPORT_SYMBOL_GPL(crypto_stats_skcipher_encrypt); | |
1248 | ||
1249 | void crypto_stats_skcipher_decrypt(unsigned int cryptlen, int ret, | |
1250 | struct crypto_alg *alg) | |
1251 | { | |
1252 | if (ret && ret != -EINPROGRESS && ret != -EBUSY) { | |
44f13133 | 1253 | atomic64_inc(&alg->stats.cipher.err_cnt); |
f7d76e05 | 1254 | } else { |
17c18f9e CL |
1255 | atomic64_inc(&alg->stats.cipher.decrypt_cnt); |
1256 | atomic64_add(cryptlen, &alg->stats.cipher.decrypt_tlen); | |
f7d76e05 CL |
1257 | } |
1258 | crypto_alg_put(alg); | |
1259 | } | |
1260 | EXPORT_SYMBOL_GPL(crypto_stats_skcipher_decrypt); | |
1261 | #endif | |
1262 | ||
cce9e06d HX |
1263 | static int __init crypto_algapi_init(void) |
1264 | { | |
1265 | crypto_init_proc(); | |
1266 | return 0; | |
1267 | } | |
1268 | ||
1269 | static void __exit crypto_algapi_exit(void) | |
1270 | { | |
1271 | crypto_exit_proc(); | |
1272 | } | |
1273 | ||
1274 | module_init(crypto_algapi_init); | |
1275 | module_exit(crypto_algapi_exit); | |
1276 | ||
1277 | MODULE_LICENSE("GPL"); | |
1278 | MODULE_DESCRIPTION("Cryptographic algorithms API"); |