1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Cryptographic API for algorithms (i.e., low-level API).
5 * Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au>
8 #include <crypto/algapi.h>
10 #include <linux/errno.h>
11 #include <linux/fips.h>
12 #include <linux/init.h>
13 #include <linux/kernel.h>
14 #include <linux/list.h>
15 #include <linux/module.h>
16 #include <linux/rtnetlink.h>
17 #include <linux/slab.h>
18 #include <linux/string.h>
22 static LIST_HEAD(crypto_template_list);
24 static inline void crypto_check_module_sig(struct module *mod)
26 if (fips_enabled && mod && !module_sig_ok(mod))
27 panic("Module %s signature verification failed in FIPS mode\n",
31 static int crypto_check_alg(struct crypto_alg *alg)
33 crypto_check_module_sig(alg->cra_module);
35 if (!alg->cra_name[0] || !alg->cra_driver_name[0])
38 if (alg->cra_alignmask & (alg->cra_alignmask + 1))
41 /* General maximums for all algs. */
42 if (alg->cra_alignmask > MAX_ALGAPI_ALIGNMASK)
45 if (alg->cra_blocksize > MAX_ALGAPI_BLOCKSIZE)
48 /* Lower maximums for specific alg types. */
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)
54 if (alg->cra_blocksize > MAX_CIPHER_BLOCKSIZE)
58 if (alg->cra_priority < 0)
61 refcount_set(&alg->cra_refcnt, 1);
66 static void crypto_free_instance(struct crypto_instance *inst)
68 if (!inst->alg.cra_type->free) {
69 inst->tmpl->free(inst);
73 inst->alg.cra_type->free(inst);
76 static void crypto_destroy_instance(struct crypto_alg *alg)
78 struct crypto_instance *inst = (void *)alg;
79 struct crypto_template *tmpl = inst->tmpl;
81 crypto_free_instance(inst);
82 crypto_tmpl_put(tmpl);
85 static struct list_head *crypto_more_spawns(struct crypto_alg *alg,
86 struct list_head *stack,
87 struct list_head *top,
88 struct list_head *secondary_spawns)
90 struct crypto_spawn *spawn, *n;
92 spawn = list_first_entry_or_null(stack, struct crypto_spawn, list);
96 n = list_next_entry(spawn, list);
98 if (spawn->alg && &n->list != stack && !n->alg)
99 n->alg = (n->list.next == stack) ? alg :
100 &list_next_entry(n, list)->inst->alg;
102 list_move(&spawn->list, secondary_spawns);
104 return &n->list == stack ? top : &n->inst->alg.cra_users;
107 static void crypto_remove_instance(struct crypto_instance *inst,
108 struct list_head *list)
110 struct crypto_template *tmpl = inst->tmpl;
112 if (crypto_is_dead(&inst->alg))
115 inst->alg.cra_flags |= CRYPTO_ALG_DEAD;
116 if (hlist_unhashed(&inst->list))
119 if (!tmpl || !crypto_tmpl_get(tmpl))
122 list_move(&inst->alg.cra_list, list);
123 hlist_del(&inst->list);
124 inst->alg.cra_destroy = crypto_destroy_instance;
126 BUG_ON(!list_empty(&inst->alg.cra_users));
129 void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list,
130 struct crypto_alg *nalg)
132 u32 new_type = (nalg ?: alg)->cra_flags;
133 struct crypto_spawn *spawn, *n;
134 LIST_HEAD(secondary_spawns);
135 struct list_head *spawns;
139 spawns = &alg->cra_users;
140 list_for_each_entry_safe(spawn, n, spawns, list) {
141 if ((spawn->alg->cra_flags ^ new_type) & spawn->mask)
144 list_move(&spawn->list, &top);
149 while (!list_empty(spawns)) {
150 struct crypto_instance *inst;
152 spawn = list_first_entry(spawns, struct crypto_spawn,
156 BUG_ON(&inst->alg == alg);
158 list_move(&spawn->list, &stack);
160 if (&inst->alg == nalg)
164 spawns = &inst->alg.cra_users;
167 * We may encounter an unregistered instance here, since
168 * an instance's spawns are set up prior to the instance
169 * being registered. An unregistered instance will have
170 * NULL ->cra_users.next, since ->cra_users isn't
171 * properly initialized until registration. But an
172 * unregistered instance cannot have any users, so treat
173 * it the same as ->cra_users being empty.
175 if (spawns->next == NULL)
178 } while ((spawns = crypto_more_spawns(alg, &stack, &top,
179 &secondary_spawns)));
181 list_for_each_entry_safe(spawn, n, &secondary_spawns, list) {
183 list_move(&spawn->list, &spawn->alg->cra_users);
185 crypto_remove_instance(spawn->inst, list);
188 EXPORT_SYMBOL_GPL(crypto_remove_spawns);
190 static struct crypto_larval *__crypto_register_alg(struct crypto_alg *alg)
192 struct crypto_alg *q;
193 struct crypto_larval *larval;
196 if (crypto_is_dead(alg))
199 INIT_LIST_HEAD(&alg->cra_users);
202 alg->cra_flags &= ~CRYPTO_ALG_TESTED;
206 list_for_each_entry(q, &crypto_alg_list, cra_list) {
210 if (crypto_is_moribund(q))
213 if (crypto_is_larval(q)) {
214 if (!strcmp(alg->cra_driver_name, q->cra_driver_name))
219 if (!strcmp(q->cra_driver_name, alg->cra_name) ||
220 !strcmp(q->cra_name, alg->cra_driver_name))
224 larval = crypto_larval_alloc(alg->cra_name,
225 alg->cra_flags | CRYPTO_ALG_TESTED, 0);
230 larval->adult = crypto_mod_get(alg);
234 refcount_set(&larval->alg.cra_refcnt, 1);
235 memcpy(larval->alg.cra_driver_name, alg->cra_driver_name,
236 CRYPTO_MAX_ALG_NAME);
237 larval->alg.cra_priority = alg->cra_priority;
239 list_add(&alg->cra_list, &crypto_alg_list);
240 list_add(&larval->alg.cra_list, &crypto_alg_list);
242 crypto_stats_init(alg);
250 larval = ERR_PTR(ret);
254 void crypto_alg_tested(const char *name, int err)
256 struct crypto_larval *test;
257 struct crypto_alg *alg;
258 struct crypto_alg *q;
261 down_write(&crypto_alg_sem);
262 list_for_each_entry(q, &crypto_alg_list, cra_list) {
263 if (crypto_is_moribund(q) || !crypto_is_larval(q))
266 test = (struct crypto_larval *)q;
268 if (!strcmp(q->cra_driver_name, name))
272 pr_err("alg: Unexpected test result for %s: %d\n", name, err);
276 q->cra_flags |= CRYPTO_ALG_DEAD;
278 if (err || list_empty(&alg->cra_list))
281 alg->cra_flags |= CRYPTO_ALG_TESTED;
283 list_for_each_entry(q, &crypto_alg_list, cra_list) {
287 if (crypto_is_moribund(q))
290 if (crypto_is_larval(q)) {
291 struct crypto_larval *larval = (void *)q;
294 * Check to see if either our generic name or
295 * specific name can satisfy the name requested
296 * by the larval entry q.
298 if (strcmp(alg->cra_name, q->cra_name) &&
299 strcmp(alg->cra_driver_name, q->cra_name))
304 if ((q->cra_flags ^ alg->cra_flags) & larval->mask)
306 if (!crypto_mod_get(alg))
313 if (strcmp(alg->cra_name, q->cra_name))
316 if (strcmp(alg->cra_driver_name, q->cra_driver_name) &&
317 q->cra_priority > alg->cra_priority)
320 crypto_remove_spawns(q, &list, alg);
324 complete_all(&test->completion);
327 up_write(&crypto_alg_sem);
329 crypto_remove_final(&list);
331 EXPORT_SYMBOL_GPL(crypto_alg_tested);
333 void crypto_remove_final(struct list_head *list)
335 struct crypto_alg *alg;
336 struct crypto_alg *n;
338 list_for_each_entry_safe(alg, n, list, cra_list) {
339 list_del_init(&alg->cra_list);
343 EXPORT_SYMBOL_GPL(crypto_remove_final);
345 static void crypto_wait_for_test(struct crypto_larval *larval)
349 err = crypto_probing_notify(CRYPTO_MSG_ALG_REGISTER, larval->adult);
350 if (err != NOTIFY_STOP) {
351 if (WARN_ON(err != NOTIFY_DONE))
353 crypto_alg_tested(larval->alg.cra_driver_name, 0);
356 err = wait_for_completion_killable(&larval->completion);
359 crypto_probing_notify(CRYPTO_MSG_ALG_LOADED, larval);
362 crypto_larval_kill(&larval->alg);
365 int crypto_register_alg(struct crypto_alg *alg)
367 struct crypto_larval *larval;
370 alg->cra_flags &= ~CRYPTO_ALG_DEAD;
371 err = crypto_check_alg(alg);
375 down_write(&crypto_alg_sem);
376 larval = __crypto_register_alg(alg);
377 up_write(&crypto_alg_sem);
380 return PTR_ERR(larval);
382 crypto_wait_for_test(larval);
385 EXPORT_SYMBOL_GPL(crypto_register_alg);
387 static int crypto_remove_alg(struct crypto_alg *alg, struct list_head *list)
389 if (unlikely(list_empty(&alg->cra_list)))
392 alg->cra_flags |= CRYPTO_ALG_DEAD;
394 list_del_init(&alg->cra_list);
395 crypto_remove_spawns(alg, list, NULL);
400 int crypto_unregister_alg(struct crypto_alg *alg)
405 down_write(&crypto_alg_sem);
406 ret = crypto_remove_alg(alg, &list);
407 up_write(&crypto_alg_sem);
412 BUG_ON(refcount_read(&alg->cra_refcnt) != 1);
413 if (alg->cra_destroy)
414 alg->cra_destroy(alg);
416 crypto_remove_final(&list);
419 EXPORT_SYMBOL_GPL(crypto_unregister_alg);
421 int crypto_register_algs(struct crypto_alg *algs, int count)
425 for (i = 0; i < count; i++) {
426 ret = crypto_register_alg(&algs[i]);
434 for (--i; i >= 0; --i)
435 crypto_unregister_alg(&algs[i]);
439 EXPORT_SYMBOL_GPL(crypto_register_algs);
441 int crypto_unregister_algs(struct crypto_alg *algs, int count)
445 for (i = 0; i < count; i++) {
446 ret = crypto_unregister_alg(&algs[i]);
448 pr_err("Failed to unregister %s %s: %d\n",
449 algs[i].cra_driver_name, algs[i].cra_name, ret);
454 EXPORT_SYMBOL_GPL(crypto_unregister_algs);
456 int crypto_register_template(struct crypto_template *tmpl)
458 struct crypto_template *q;
461 down_write(&crypto_alg_sem);
463 crypto_check_module_sig(tmpl->module);
465 list_for_each_entry(q, &crypto_template_list, list) {
470 list_add(&tmpl->list, &crypto_template_list);
473 up_write(&crypto_alg_sem);
476 EXPORT_SYMBOL_GPL(crypto_register_template);
478 int crypto_register_templates(struct crypto_template *tmpls, int count)
482 for (i = 0; i < count; i++) {
483 err = crypto_register_template(&tmpls[i]);
490 for (--i; i >= 0; --i)
491 crypto_unregister_template(&tmpls[i]);
494 EXPORT_SYMBOL_GPL(crypto_register_templates);
496 void crypto_unregister_template(struct crypto_template *tmpl)
498 struct crypto_instance *inst;
499 struct hlist_node *n;
500 struct hlist_head *list;
503 down_write(&crypto_alg_sem);
505 BUG_ON(list_empty(&tmpl->list));
506 list_del_init(&tmpl->list);
508 list = &tmpl->instances;
509 hlist_for_each_entry(inst, list, list) {
510 int err = crypto_remove_alg(&inst->alg, &users);
515 up_write(&crypto_alg_sem);
517 hlist_for_each_entry_safe(inst, n, list, list) {
518 BUG_ON(refcount_read(&inst->alg.cra_refcnt) != 1);
519 crypto_free_instance(inst);
521 crypto_remove_final(&users);
523 EXPORT_SYMBOL_GPL(crypto_unregister_template);
525 void crypto_unregister_templates(struct crypto_template *tmpls, int count)
529 for (i = count - 1; i >= 0; --i)
530 crypto_unregister_template(&tmpls[i]);
532 EXPORT_SYMBOL_GPL(crypto_unregister_templates);
534 static struct crypto_template *__crypto_lookup_template(const char *name)
536 struct crypto_template *q, *tmpl = NULL;
538 down_read(&crypto_alg_sem);
539 list_for_each_entry(q, &crypto_template_list, list) {
540 if (strcmp(q->name, name))
542 if (unlikely(!crypto_tmpl_get(q)))
548 up_read(&crypto_alg_sem);
553 struct crypto_template *crypto_lookup_template(const char *name)
555 return try_then_request_module(__crypto_lookup_template(name),
558 EXPORT_SYMBOL_GPL(crypto_lookup_template);
560 int crypto_register_instance(struct crypto_template *tmpl,
561 struct crypto_instance *inst)
563 struct crypto_larval *larval;
566 err = crypto_check_alg(&inst->alg);
570 inst->alg.cra_module = tmpl->module;
571 inst->alg.cra_flags |= CRYPTO_ALG_INSTANCE;
573 down_write(&crypto_alg_sem);
575 larval = __crypto_register_alg(&inst->alg);
579 hlist_add_head(&inst->list, &tmpl->instances);
583 up_write(&crypto_alg_sem);
585 err = PTR_ERR(larval);
589 crypto_wait_for_test(larval);
595 EXPORT_SYMBOL_GPL(crypto_register_instance);
597 int crypto_unregister_instance(struct crypto_instance *inst)
601 down_write(&crypto_alg_sem);
603 crypto_remove_spawns(&inst->alg, &list, NULL);
604 crypto_remove_instance(inst, &list);
606 up_write(&crypto_alg_sem);
608 crypto_remove_final(&list);
612 EXPORT_SYMBOL_GPL(crypto_unregister_instance);
614 int crypto_init_spawn(struct crypto_spawn *spawn, struct crypto_alg *alg,
615 struct crypto_instance *inst, u32 mask)
619 if (WARN_ON_ONCE(inst == NULL))
625 down_write(&crypto_alg_sem);
626 if (!crypto_is_moribund(alg)) {
627 list_add(&spawn->list, &alg->cra_users);
631 up_write(&crypto_alg_sem);
635 EXPORT_SYMBOL_GPL(crypto_init_spawn);
637 int crypto_init_spawn2(struct crypto_spawn *spawn, struct crypto_alg *alg,
638 struct crypto_instance *inst,
639 const struct crypto_type *frontend)
643 if ((alg->cra_flags ^ frontend->type) & frontend->maskset)
646 spawn->frontend = frontend;
647 err = crypto_init_spawn(spawn, alg, inst, frontend->maskset);
652 EXPORT_SYMBOL_GPL(crypto_init_spawn2);
654 int crypto_grab_spawn(struct crypto_spawn *spawn, const char *name,
657 struct crypto_alg *alg;
660 alg = crypto_find_alg(name, spawn->frontend, type, mask);
664 err = crypto_init_spawn(spawn, alg, spawn->inst, mask);
668 EXPORT_SYMBOL_GPL(crypto_grab_spawn);
670 void crypto_drop_spawn(struct crypto_spawn *spawn)
672 down_write(&crypto_alg_sem);
674 list_del(&spawn->list);
675 up_write(&crypto_alg_sem);
677 EXPORT_SYMBOL_GPL(crypto_drop_spawn);
679 static struct crypto_alg *crypto_spawn_alg(struct crypto_spawn *spawn)
681 struct crypto_alg *alg;
682 struct crypto_alg *alg2;
684 down_read(&crypto_alg_sem);
688 alg2 = crypto_mod_get(alg2);
689 up_read(&crypto_alg_sem);
693 crypto_shoot_alg(alg);
694 return ERR_PTR(-EAGAIN);
700 struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn, u32 type,
703 struct crypto_alg *alg;
704 struct crypto_tfm *tfm;
706 alg = crypto_spawn_alg(spawn);
708 return ERR_CAST(alg);
710 tfm = ERR_PTR(-EINVAL);
711 if (unlikely((alg->cra_flags ^ type) & mask))
714 tfm = __crypto_alloc_tfm(alg, type, mask);
724 EXPORT_SYMBOL_GPL(crypto_spawn_tfm);
726 void *crypto_spawn_tfm2(struct crypto_spawn *spawn)
728 struct crypto_alg *alg;
729 struct crypto_tfm *tfm;
731 alg = crypto_spawn_alg(spawn);
733 return ERR_CAST(alg);
735 tfm = crypto_create_tfm(alg, spawn->frontend);
745 EXPORT_SYMBOL_GPL(crypto_spawn_tfm2);
747 int crypto_register_notifier(struct notifier_block *nb)
749 return blocking_notifier_chain_register(&crypto_chain, nb);
751 EXPORT_SYMBOL_GPL(crypto_register_notifier);
753 int crypto_unregister_notifier(struct notifier_block *nb)
755 return blocking_notifier_chain_unregister(&crypto_chain, nb);
757 EXPORT_SYMBOL_GPL(crypto_unregister_notifier);
759 struct crypto_attr_type *crypto_get_attr_type(struct rtattr **tb)
761 struct rtattr *rta = tb[0];
762 struct crypto_attr_type *algt;
765 return ERR_PTR(-ENOENT);
766 if (RTA_PAYLOAD(rta) < sizeof(*algt))
767 return ERR_PTR(-EINVAL);
768 if (rta->rta_type != CRYPTOA_TYPE)
769 return ERR_PTR(-EINVAL);
771 algt = RTA_DATA(rta);
775 EXPORT_SYMBOL_GPL(crypto_get_attr_type);
777 int crypto_check_attr_type(struct rtattr **tb, u32 type)
779 struct crypto_attr_type *algt;
781 algt = crypto_get_attr_type(tb);
783 return PTR_ERR(algt);
785 if ((algt->type ^ type) & algt->mask)
790 EXPORT_SYMBOL_GPL(crypto_check_attr_type);
792 const char *crypto_attr_alg_name(struct rtattr *rta)
794 struct crypto_attr_alg *alga;
797 return ERR_PTR(-ENOENT);
798 if (RTA_PAYLOAD(rta) < sizeof(*alga))
799 return ERR_PTR(-EINVAL);
800 if (rta->rta_type != CRYPTOA_ALG)
801 return ERR_PTR(-EINVAL);
803 alga = RTA_DATA(rta);
804 alga->name[CRYPTO_MAX_ALG_NAME - 1] = 0;
808 EXPORT_SYMBOL_GPL(crypto_attr_alg_name);
810 struct crypto_alg *crypto_attr_alg2(struct rtattr *rta,
811 const struct crypto_type *frontend,
816 name = crypto_attr_alg_name(rta);
818 return ERR_CAST(name);
820 return crypto_find_alg(name, frontend, type, mask);
822 EXPORT_SYMBOL_GPL(crypto_attr_alg2);
824 int crypto_attr_u32(struct rtattr *rta, u32 *num)
826 struct crypto_attr_u32 *nu32;
830 if (RTA_PAYLOAD(rta) < sizeof(*nu32))
832 if (rta->rta_type != CRYPTOA_U32)
835 nu32 = RTA_DATA(rta);
840 EXPORT_SYMBOL_GPL(crypto_attr_u32);
842 int crypto_inst_setname(struct crypto_instance *inst, const char *name,
843 struct crypto_alg *alg)
845 if (snprintf(inst->alg.cra_name, CRYPTO_MAX_ALG_NAME, "%s(%s)", name,
846 alg->cra_name) >= CRYPTO_MAX_ALG_NAME)
847 return -ENAMETOOLONG;
849 if (snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s(%s)",
850 name, alg->cra_driver_name) >= CRYPTO_MAX_ALG_NAME)
851 return -ENAMETOOLONG;
855 EXPORT_SYMBOL_GPL(crypto_inst_setname);
857 void *crypto_alloc_instance(const char *name, struct crypto_alg *alg,
860 struct crypto_instance *inst;
864 p = kzalloc(head + sizeof(*inst) + sizeof(struct crypto_spawn),
867 return ERR_PTR(-ENOMEM);
869 inst = (void *)(p + head);
871 err = crypto_inst_setname(inst, name, alg);
881 EXPORT_SYMBOL_GPL(crypto_alloc_instance);
883 void crypto_init_queue(struct crypto_queue *queue, unsigned int max_qlen)
885 INIT_LIST_HEAD(&queue->list);
886 queue->backlog = &queue->list;
888 queue->max_qlen = max_qlen;
890 EXPORT_SYMBOL_GPL(crypto_init_queue);
892 int crypto_enqueue_request(struct crypto_queue *queue,
893 struct crypto_async_request *request)
895 int err = -EINPROGRESS;
897 if (unlikely(queue->qlen >= queue->max_qlen)) {
898 if (!(request->flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) {
903 if (queue->backlog == &queue->list)
904 queue->backlog = &request->list;
908 list_add_tail(&request->list, &queue->list);
913 EXPORT_SYMBOL_GPL(crypto_enqueue_request);
915 struct crypto_async_request *crypto_dequeue_request(struct crypto_queue *queue)
917 struct list_head *request;
919 if (unlikely(!queue->qlen))
924 if (queue->backlog != &queue->list)
925 queue->backlog = queue->backlog->next;
927 request = queue->list.next;
930 return list_entry(request, struct crypto_async_request, list);
932 EXPORT_SYMBOL_GPL(crypto_dequeue_request);
934 static inline void crypto_inc_byte(u8 *a, unsigned int size)
939 for (; size; size--) {
947 void crypto_inc(u8 *a, unsigned int size)
949 __be32 *b = (__be32 *)(a + size);
952 if (IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) ||
953 IS_ALIGNED((unsigned long)b, __alignof__(*b)))
954 for (; size >= 4; size -= 4) {
955 c = be32_to_cpu(*--b) + 1;
961 crypto_inc_byte(a, size);
963 EXPORT_SYMBOL_GPL(crypto_inc);
965 void __crypto_xor(u8 *dst, const u8 *src1, const u8 *src2, unsigned int len)
969 if (!IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)) {
970 int size = sizeof(unsigned long);
971 int d = (((unsigned long)dst ^ (unsigned long)src1) |
972 ((unsigned long)dst ^ (unsigned long)src2)) &
975 relalign = d ? 1 << __ffs(d) : size;
978 * If we care about alignment, process as many bytes as
979 * needed to advance dst and src to values whose alignments
980 * equal their relative alignment. This will allow us to
981 * process the remainder of the input using optimal strides.
983 while (((unsigned long)dst & (relalign - 1)) && len > 0) {
984 *dst++ = *src1++ ^ *src2++;
989 while (IS_ENABLED(CONFIG_64BIT) && len >= 8 && !(relalign & 7)) {
990 *(u64 *)dst = *(u64 *)src1 ^ *(u64 *)src2;
997 while (len >= 4 && !(relalign & 3)) {
998 *(u32 *)dst = *(u32 *)src1 ^ *(u32 *)src2;
1005 while (len >= 2 && !(relalign & 1)) {
1006 *(u16 *)dst = *(u16 *)src1 ^ *(u16 *)src2;
1014 *dst++ = *src1++ ^ *src2++;
1016 EXPORT_SYMBOL_GPL(__crypto_xor);
1018 unsigned int crypto_alg_extsize(struct crypto_alg *alg)
1020 return alg->cra_ctxsize +
1021 (alg->cra_alignmask & ~(crypto_tfm_ctx_alignment() - 1));
1023 EXPORT_SYMBOL_GPL(crypto_alg_extsize);
1025 int crypto_type_has_alg(const char *name, const struct crypto_type *frontend,
1029 struct crypto_alg *alg = crypto_find_alg(name, frontend, type, mask);
1032 crypto_mod_put(alg);
1038 EXPORT_SYMBOL_GPL(crypto_type_has_alg);
1040 #ifdef CONFIG_CRYPTO_STATS
1041 void crypto_stats_init(struct crypto_alg *alg)
1043 memset(&alg->stats, 0, sizeof(alg->stats));
1045 EXPORT_SYMBOL_GPL(crypto_stats_init);
1047 void crypto_stats_get(struct crypto_alg *alg)
1049 crypto_alg_get(alg);
1051 EXPORT_SYMBOL_GPL(crypto_stats_get);
1053 void crypto_stats_ablkcipher_encrypt(unsigned int nbytes, int ret,
1054 struct crypto_alg *alg)
1056 if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
1057 atomic64_inc(&alg->stats.cipher.err_cnt);
1059 atomic64_inc(&alg->stats.cipher.encrypt_cnt);
1060 atomic64_add(nbytes, &alg->stats.cipher.encrypt_tlen);
1062 crypto_alg_put(alg);
1064 EXPORT_SYMBOL_GPL(crypto_stats_ablkcipher_encrypt);
1066 void crypto_stats_ablkcipher_decrypt(unsigned int nbytes, int ret,
1067 struct crypto_alg *alg)
1069 if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
1070 atomic64_inc(&alg->stats.cipher.err_cnt);
1072 atomic64_inc(&alg->stats.cipher.decrypt_cnt);
1073 atomic64_add(nbytes, &alg->stats.cipher.decrypt_tlen);
1075 crypto_alg_put(alg);
1077 EXPORT_SYMBOL_GPL(crypto_stats_ablkcipher_decrypt);
1079 void crypto_stats_aead_encrypt(unsigned int cryptlen, struct crypto_alg *alg,
1082 if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
1083 atomic64_inc(&alg->stats.aead.err_cnt);
1085 atomic64_inc(&alg->stats.aead.encrypt_cnt);
1086 atomic64_add(cryptlen, &alg->stats.aead.encrypt_tlen);
1088 crypto_alg_put(alg);
1090 EXPORT_SYMBOL_GPL(crypto_stats_aead_encrypt);
1092 void crypto_stats_aead_decrypt(unsigned int cryptlen, struct crypto_alg *alg,
1095 if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
1096 atomic64_inc(&alg->stats.aead.err_cnt);
1098 atomic64_inc(&alg->stats.aead.decrypt_cnt);
1099 atomic64_add(cryptlen, &alg->stats.aead.decrypt_tlen);
1101 crypto_alg_put(alg);
1103 EXPORT_SYMBOL_GPL(crypto_stats_aead_decrypt);
1105 void crypto_stats_akcipher_encrypt(unsigned int src_len, int ret,
1106 struct crypto_alg *alg)
1108 if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
1109 atomic64_inc(&alg->stats.akcipher.err_cnt);
1111 atomic64_inc(&alg->stats.akcipher.encrypt_cnt);
1112 atomic64_add(src_len, &alg->stats.akcipher.encrypt_tlen);
1114 crypto_alg_put(alg);
1116 EXPORT_SYMBOL_GPL(crypto_stats_akcipher_encrypt);
1118 void crypto_stats_akcipher_decrypt(unsigned int src_len, int ret,
1119 struct crypto_alg *alg)
1121 if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
1122 atomic64_inc(&alg->stats.akcipher.err_cnt);
1124 atomic64_inc(&alg->stats.akcipher.decrypt_cnt);
1125 atomic64_add(src_len, &alg->stats.akcipher.decrypt_tlen);
1127 crypto_alg_put(alg);
1129 EXPORT_SYMBOL_GPL(crypto_stats_akcipher_decrypt);
1131 void crypto_stats_akcipher_sign(int ret, struct crypto_alg *alg)
1133 if (ret && ret != -EINPROGRESS && ret != -EBUSY)
1134 atomic64_inc(&alg->stats.akcipher.err_cnt);
1136 atomic64_inc(&alg->stats.akcipher.sign_cnt);
1137 crypto_alg_put(alg);
1139 EXPORT_SYMBOL_GPL(crypto_stats_akcipher_sign);
1141 void crypto_stats_akcipher_verify(int ret, struct crypto_alg *alg)
1143 if (ret && ret != -EINPROGRESS && ret != -EBUSY)
1144 atomic64_inc(&alg->stats.akcipher.err_cnt);
1146 atomic64_inc(&alg->stats.akcipher.verify_cnt);
1147 crypto_alg_put(alg);
1149 EXPORT_SYMBOL_GPL(crypto_stats_akcipher_verify);
1151 void crypto_stats_compress(unsigned int slen, int ret, struct crypto_alg *alg)
1153 if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
1154 atomic64_inc(&alg->stats.compress.err_cnt);
1156 atomic64_inc(&alg->stats.compress.compress_cnt);
1157 atomic64_add(slen, &alg->stats.compress.compress_tlen);
1159 crypto_alg_put(alg);
1161 EXPORT_SYMBOL_GPL(crypto_stats_compress);
1163 void crypto_stats_decompress(unsigned int slen, int ret, struct crypto_alg *alg)
1165 if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
1166 atomic64_inc(&alg->stats.compress.err_cnt);
1168 atomic64_inc(&alg->stats.compress.decompress_cnt);
1169 atomic64_add(slen, &alg->stats.compress.decompress_tlen);
1171 crypto_alg_put(alg);
1173 EXPORT_SYMBOL_GPL(crypto_stats_decompress);
1175 void crypto_stats_ahash_update(unsigned int nbytes, int ret,
1176 struct crypto_alg *alg)
1178 if (ret && ret != -EINPROGRESS && ret != -EBUSY)
1179 atomic64_inc(&alg->stats.hash.err_cnt);
1181 atomic64_add(nbytes, &alg->stats.hash.hash_tlen);
1182 crypto_alg_put(alg);
1184 EXPORT_SYMBOL_GPL(crypto_stats_ahash_update);
1186 void crypto_stats_ahash_final(unsigned int nbytes, int ret,
1187 struct crypto_alg *alg)
1189 if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
1190 atomic64_inc(&alg->stats.hash.err_cnt);
1192 atomic64_inc(&alg->stats.hash.hash_cnt);
1193 atomic64_add(nbytes, &alg->stats.hash.hash_tlen);
1195 crypto_alg_put(alg);
1197 EXPORT_SYMBOL_GPL(crypto_stats_ahash_final);
1199 void crypto_stats_kpp_set_secret(struct crypto_alg *alg, int ret)
1202 atomic64_inc(&alg->stats.kpp.err_cnt);
1204 atomic64_inc(&alg->stats.kpp.setsecret_cnt);
1205 crypto_alg_put(alg);
1207 EXPORT_SYMBOL_GPL(crypto_stats_kpp_set_secret);
1209 void crypto_stats_kpp_generate_public_key(struct crypto_alg *alg, int ret)
1212 atomic64_inc(&alg->stats.kpp.err_cnt);
1214 atomic64_inc(&alg->stats.kpp.generate_public_key_cnt);
1215 crypto_alg_put(alg);
1217 EXPORT_SYMBOL_GPL(crypto_stats_kpp_generate_public_key);
1219 void crypto_stats_kpp_compute_shared_secret(struct crypto_alg *alg, int ret)
1222 atomic64_inc(&alg->stats.kpp.err_cnt);
1224 atomic64_inc(&alg->stats.kpp.compute_shared_secret_cnt);
1225 crypto_alg_put(alg);
1227 EXPORT_SYMBOL_GPL(crypto_stats_kpp_compute_shared_secret);
1229 void crypto_stats_rng_seed(struct crypto_alg *alg, int ret)
1231 if (ret && ret != -EINPROGRESS && ret != -EBUSY)
1232 atomic64_inc(&alg->stats.rng.err_cnt);
1234 atomic64_inc(&alg->stats.rng.seed_cnt);
1235 crypto_alg_put(alg);
1237 EXPORT_SYMBOL_GPL(crypto_stats_rng_seed);
1239 void crypto_stats_rng_generate(struct crypto_alg *alg, unsigned int dlen,
1242 if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
1243 atomic64_inc(&alg->stats.rng.err_cnt);
1245 atomic64_inc(&alg->stats.rng.generate_cnt);
1246 atomic64_add(dlen, &alg->stats.rng.generate_tlen);
1248 crypto_alg_put(alg);
1250 EXPORT_SYMBOL_GPL(crypto_stats_rng_generate);
1252 void crypto_stats_skcipher_encrypt(unsigned int cryptlen, int ret,
1253 struct crypto_alg *alg)
1255 if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
1256 atomic64_inc(&alg->stats.cipher.err_cnt);
1258 atomic64_inc(&alg->stats.cipher.encrypt_cnt);
1259 atomic64_add(cryptlen, &alg->stats.cipher.encrypt_tlen);
1261 crypto_alg_put(alg);
1263 EXPORT_SYMBOL_GPL(crypto_stats_skcipher_encrypt);
1265 void crypto_stats_skcipher_decrypt(unsigned int cryptlen, int ret,
1266 struct crypto_alg *alg)
1268 if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
1269 atomic64_inc(&alg->stats.cipher.err_cnt);
1271 atomic64_inc(&alg->stats.cipher.decrypt_cnt);
1272 atomic64_add(cryptlen, &alg->stats.cipher.decrypt_tlen);
1274 crypto_alg_put(alg);
1276 EXPORT_SYMBOL_GPL(crypto_stats_skcipher_decrypt);
1279 static int __init crypto_algapi_init(void)
1285 static void __exit crypto_algapi_exit(void)
1290 module_init(crypto_algapi_init);
1291 module_exit(crypto_algapi_exit);
1293 MODULE_LICENSE("GPL");
1294 MODULE_DESCRIPTION("Cryptographic algorithms API");