#include <linux/rtnetlink.h>
#include <linux/slab.h>
#include <linux/string.h>
+#include <linux/workqueue.h>
#include "internal.h"
inst->alg.cra_type->free(inst);
}
-static void crypto_destroy_instance(struct crypto_alg *alg)
+static void crypto_destroy_instance_workfn(struct work_struct *w)
{
- struct crypto_instance *inst = (void *)alg;
+ struct crypto_instance *inst = container_of(w, struct crypto_instance,
+ free_work);
struct crypto_template *tmpl = inst->tmpl;
crypto_free_instance(inst);
crypto_tmpl_put(tmpl);
}
+static void crypto_destroy_instance(struct crypto_alg *alg)
+{
+ struct crypto_instance *inst = container_of(alg,
+ struct crypto_instance,
+ alg);
+
+ INIT_WORK(&inst->free_work, crypto_destroy_instance_workfn);
+ schedule_work(&inst->free_work);
+}
+
/*
* This function adds a spawn to the list secondary_spawns which
* will be used at the end of crypto_remove_spawns to unregister
}
EXPORT_SYMBOL_GPL(crypto_remove_spawns);
+static void crypto_alg_finish_registration(struct crypto_alg *alg,
+ bool fulfill_requests,
+ struct list_head *algs_to_put)
+{
+ struct crypto_alg *q;
+
+ list_for_each_entry(q, &crypto_alg_list, cra_list) {
+ if (q == alg)
+ continue;
+
+ if (crypto_is_moribund(q))
+ continue;
+
+ if (crypto_is_larval(q)) {
+ struct crypto_larval *larval = (void *)q;
+
+ /*
+ * Check to see if either our generic name or
+ * specific name can satisfy the name requested
+ * by the larval entry q.
+ */
+ if (strcmp(alg->cra_name, q->cra_name) &&
+ strcmp(alg->cra_driver_name, q->cra_name))
+ continue;
+
+ if (larval->adult)
+ continue;
+ if ((q->cra_flags ^ alg->cra_flags) & larval->mask)
+ continue;
+
+ if (fulfill_requests && crypto_mod_get(alg))
+ larval->adult = alg;
+ else
+ larval->adult = ERR_PTR(-EAGAIN);
+
+ continue;
+ }
+
+ if (strcmp(alg->cra_name, q->cra_name))
+ continue;
+
+ if (strcmp(alg->cra_driver_name, q->cra_driver_name) &&
+ q->cra_priority > alg->cra_priority)
+ continue;
+
+ crypto_remove_spawns(q, algs_to_put, alg);
+ }
+
+ crypto_notify(CRYPTO_MSG_ALG_LOADED, alg);
+}
+
static struct crypto_larval *crypto_alloc_test_larval(struct crypto_alg *alg)
{
struct crypto_larval *larval;
- if (!IS_ENABLED(CONFIG_CRYPTO_MANAGER))
- return NULL;
+ if (!IS_ENABLED(CONFIG_CRYPTO_MANAGER) ||
+ IS_ENABLED(CONFIG_CRYPTO_MANAGER_DISABLE_TESTS) ||
+ (alg->cra_flags & CRYPTO_ALG_INTERNAL))
+ return NULL; /* No self-test needed */
larval = crypto_larval_alloc(alg->cra_name,
alg->cra_flags | CRYPTO_ALG_TESTED, 0);
return larval;
}
-static struct crypto_larval *__crypto_register_alg(struct crypto_alg *alg)
+static struct crypto_larval *
+__crypto_register_alg(struct crypto_alg *alg, struct list_head *algs_to_put)
{
struct crypto_alg *q;
struct crypto_larval *larval;
INIT_LIST_HEAD(&alg->cra_users);
- /* No cheating! */
- alg->cra_flags &= ~CRYPTO_ALG_TESTED;
-
ret = -EEXIST;
list_for_each_entry(q, &crypto_alg_list, cra_list) {
}
if (!strcmp(q->cra_driver_name, alg->cra_name) ||
+ !strcmp(q->cra_driver_name, alg->cra_driver_name) ||
!strcmp(q->cra_name, alg->cra_driver_name))
goto err;
}
list_add(&alg->cra_list, &crypto_alg_list);
- if (larval)
+ if (larval) {
+ /* No cheating! */
+ alg->cra_flags &= ~CRYPTO_ALG_TESTED;
+
list_add(&larval->alg.cra_list, &crypto_alg_list);
- else
+ } else {
alg->cra_flags |= CRYPTO_ALG_TESTED;
-
- crypto_stats_init(alg);
+ crypto_alg_finish_registration(alg, true, algs_to_put);
+ }
out:
return larval;
alg->cra_flags |= CRYPTO_ALG_TESTED;
- /* Only satisfy larval waiters if we are the best. */
+ /*
+ * If a higher-priority implementation of the same algorithm is
+ * currently being tested, then don't fulfill request larvals.
+ */
best = true;
list_for_each_entry(q, &crypto_alg_list, cra_list) {
if (crypto_is_moribund(q) || !crypto_is_larval(q))
}
}
- list_for_each_entry(q, &crypto_alg_list, cra_list) {
- if (q == alg)
- continue;
-
- if (crypto_is_moribund(q))
- continue;
-
- if (crypto_is_larval(q)) {
- struct crypto_larval *larval = (void *)q;
-
- /*
- * Check to see if either our generic name or
- * specific name can satisfy the name requested
- * by the larval entry q.
- */
- if (strcmp(alg->cra_name, q->cra_name) &&
- strcmp(alg->cra_driver_name, q->cra_name))
- continue;
-
- if (larval->adult)
- continue;
- if ((q->cra_flags ^ alg->cra_flags) & larval->mask)
- continue;
-
- if (best && crypto_mod_get(alg))
- larval->adult = alg;
- else
- larval->adult = ERR_PTR(-EAGAIN);
-
- continue;
- }
-
- if (strcmp(alg->cra_name, q->cra_name))
- continue;
-
- if (strcmp(alg->cra_driver_name, q->cra_driver_name) &&
- q->cra_priority > alg->cra_priority)
- continue;
-
- crypto_remove_spawns(q, &list, alg);
- }
+ crypto_alg_finish_registration(alg, best, &list);
complete:
complete_all(&test->completion);
int crypto_register_alg(struct crypto_alg *alg)
{
struct crypto_larval *larval;
- bool test_started;
+ LIST_HEAD(algs_to_put);
+ bool test_started = false;
int err;
alg->cra_flags &= ~CRYPTO_ALG_DEAD;
return err;
down_write(&crypto_alg_sem);
- larval = __crypto_register_alg(alg);
- test_started = static_key_enabled(&crypto_boot_test_finished);
- if (!IS_ERR_OR_NULL(larval))
+ larval = __crypto_register_alg(alg, &algs_to_put);
+ if (!IS_ERR_OR_NULL(larval)) {
+ test_started = crypto_boot_test_finished();
larval->test_started = test_started;
+ }
up_write(&crypto_alg_sem);
- if (IS_ERR_OR_NULL(larval))
+ if (IS_ERR(larval))
return PTR_ERR(larval);
-
if (test_started)
crypto_wait_for_test(larval);
+ crypto_remove_final(&algs_to_put);
return 0;
}
EXPORT_SYMBOL_GPL(crypto_register_alg);
if (WARN(ret, "Algorithm %s is not registered", alg->cra_driver_name))
return;
- BUG_ON(refcount_read(&alg->cra_refcnt) != 1);
+ if (WARN_ON(refcount_read(&alg->cra_refcnt) != 1))
+ return;
+
if (alg->cra_destroy)
alg->cra_destroy(alg);
struct crypto_larval *larval;
struct crypto_spawn *spawn;
u32 fips_internal = 0;
+ LIST_HEAD(algs_to_put);
int err;
err = crypto_check_alg(&inst->alg);
inst->alg.cra_flags |= (fips_internal & CRYPTO_ALG_FIPS_INTERNAL);
- larval = __crypto_register_alg(&inst->alg);
+ larval = __crypto_register_alg(&inst->alg, &algs_to_put);
if (IS_ERR(larval))
goto unlock;
else if (larval)
unlock:
up_write(&crypto_alg_sem);
- err = PTR_ERR(larval);
- if (IS_ERR_OR_NULL(larval))
- goto err;
-
- crypto_wait_for_test(larval);
- err = 0;
-
-err:
- return err;
+ if (IS_ERR(larval))
+ return PTR_ERR(larval);
+ if (larval)
+ crypto_wait_for_test(larval);
+ crypto_remove_final(&algs_to_put);
+ return 0;
}
EXPORT_SYMBOL_GPL(crypto_register_instance);
void crypto_enqueue_request_head(struct crypto_queue *queue,
struct crypto_async_request *request)
{
+ if (unlikely(queue->qlen >= queue->max_qlen))
+ queue->backlog = queue->backlog->prev;
+
queue->qlen++;
list_add(&request->list, &queue->list);
}
}
EXPORT_SYMBOL_GPL(crypto_inc);
-void __crypto_xor(u8 *dst, const u8 *src1, const u8 *src2, unsigned int len)
-{
- int relalign = 0;
-
- if (!IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)) {
- int size = sizeof(unsigned long);
- int d = (((unsigned long)dst ^ (unsigned long)src1) |
- ((unsigned long)dst ^ (unsigned long)src2)) &
- (size - 1);
-
- relalign = d ? 1 << __ffs(d) : size;
-
- /*
- * If we care about alignment, process as many bytes as
- * needed to advance dst and src to values whose alignments
- * equal their relative alignment. This will allow us to
- * process the remainder of the input using optimal strides.
- */
- while (((unsigned long)dst & (relalign - 1)) && len > 0) {
- *dst++ = *src1++ ^ *src2++;
- len--;
- }
- }
-
- while (IS_ENABLED(CONFIG_64BIT) && len >= 8 && !(relalign & 7)) {
- if (IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)) {
- u64 l = get_unaligned((u64 *)src1) ^
- get_unaligned((u64 *)src2);
- put_unaligned(l, (u64 *)dst);
- } else {
- *(u64 *)dst = *(u64 *)src1 ^ *(u64 *)src2;
- }
- dst += 8;
- src1 += 8;
- src2 += 8;
- len -= 8;
- }
-
- while (len >= 4 && !(relalign & 3)) {
- if (IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)) {
- u32 l = get_unaligned((u32 *)src1) ^
- get_unaligned((u32 *)src2);
- put_unaligned(l, (u32 *)dst);
- } else {
- *(u32 *)dst = *(u32 *)src1 ^ *(u32 *)src2;
- }
- dst += 4;
- src1 += 4;
- src2 += 4;
- len -= 4;
- }
-
- while (len >= 2 && !(relalign & 1)) {
- if (IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)) {
- u16 l = get_unaligned((u16 *)src1) ^
- get_unaligned((u16 *)src2);
- put_unaligned(l, (u16 *)dst);
- } else {
- *(u16 *)dst = *(u16 *)src1 ^ *(u16 *)src2;
- }
- dst += 2;
- src1 += 2;
- src2 += 2;
- len -= 2;
- }
-
- while (len--)
- *dst++ = *src1++ ^ *src2++;
-}
-EXPORT_SYMBOL_GPL(__crypto_xor);
-
unsigned int crypto_alg_extsize(struct crypto_alg *alg)
{
return alg->cra_ctxsize +
}
EXPORT_SYMBOL_GPL(crypto_type_has_alg);
-#ifdef CONFIG_CRYPTO_STATS
-void crypto_stats_init(struct crypto_alg *alg)
-{
- memset(&alg->stats, 0, sizeof(alg->stats));
-}
-EXPORT_SYMBOL_GPL(crypto_stats_init);
-
-void crypto_stats_get(struct crypto_alg *alg)
-{
- crypto_alg_get(alg);
-}
-EXPORT_SYMBOL_GPL(crypto_stats_get);
-
-void crypto_stats_aead_encrypt(unsigned int cryptlen, struct crypto_alg *alg,
- int ret)
-{
- if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
- atomic64_inc(&alg->stats.aead.err_cnt);
- } else {
- atomic64_inc(&alg->stats.aead.encrypt_cnt);
- atomic64_add(cryptlen, &alg->stats.aead.encrypt_tlen);
- }
- crypto_alg_put(alg);
-}
-EXPORT_SYMBOL_GPL(crypto_stats_aead_encrypt);
-
-void crypto_stats_aead_decrypt(unsigned int cryptlen, struct crypto_alg *alg,
- int ret)
-{
- if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
- atomic64_inc(&alg->stats.aead.err_cnt);
- } else {
- atomic64_inc(&alg->stats.aead.decrypt_cnt);
- atomic64_add(cryptlen, &alg->stats.aead.decrypt_tlen);
- }
- crypto_alg_put(alg);
-}
-EXPORT_SYMBOL_GPL(crypto_stats_aead_decrypt);
-
-void crypto_stats_akcipher_encrypt(unsigned int src_len, int ret,
- struct crypto_alg *alg)
-{
- if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
- atomic64_inc(&alg->stats.akcipher.err_cnt);
- } else {
- atomic64_inc(&alg->stats.akcipher.encrypt_cnt);
- atomic64_add(src_len, &alg->stats.akcipher.encrypt_tlen);
- }
- crypto_alg_put(alg);
-}
-EXPORT_SYMBOL_GPL(crypto_stats_akcipher_encrypt);
-
-void crypto_stats_akcipher_decrypt(unsigned int src_len, int ret,
- struct crypto_alg *alg)
-{
- if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
- atomic64_inc(&alg->stats.akcipher.err_cnt);
- } else {
- atomic64_inc(&alg->stats.akcipher.decrypt_cnt);
- atomic64_add(src_len, &alg->stats.akcipher.decrypt_tlen);
- }
- crypto_alg_put(alg);
-}
-EXPORT_SYMBOL_GPL(crypto_stats_akcipher_decrypt);
-
-void crypto_stats_akcipher_sign(int ret, struct crypto_alg *alg)
-{
- if (ret && ret != -EINPROGRESS && ret != -EBUSY)
- atomic64_inc(&alg->stats.akcipher.err_cnt);
- else
- atomic64_inc(&alg->stats.akcipher.sign_cnt);
- crypto_alg_put(alg);
-}
-EXPORT_SYMBOL_GPL(crypto_stats_akcipher_sign);
-
-void crypto_stats_akcipher_verify(int ret, struct crypto_alg *alg)
-{
- if (ret && ret != -EINPROGRESS && ret != -EBUSY)
- atomic64_inc(&alg->stats.akcipher.err_cnt);
- else
- atomic64_inc(&alg->stats.akcipher.verify_cnt);
- crypto_alg_put(alg);
-}
-EXPORT_SYMBOL_GPL(crypto_stats_akcipher_verify);
-
-void crypto_stats_compress(unsigned int slen, int ret, struct crypto_alg *alg)
-{
- if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
- atomic64_inc(&alg->stats.compress.err_cnt);
- } else {
- atomic64_inc(&alg->stats.compress.compress_cnt);
- atomic64_add(slen, &alg->stats.compress.compress_tlen);
- }
- crypto_alg_put(alg);
-}
-EXPORT_SYMBOL_GPL(crypto_stats_compress);
-
-void crypto_stats_decompress(unsigned int slen, int ret, struct crypto_alg *alg)
-{
- if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
- atomic64_inc(&alg->stats.compress.err_cnt);
- } else {
- atomic64_inc(&alg->stats.compress.decompress_cnt);
- atomic64_add(slen, &alg->stats.compress.decompress_tlen);
- }
- crypto_alg_put(alg);
-}
-EXPORT_SYMBOL_GPL(crypto_stats_decompress);
-
-void crypto_stats_ahash_update(unsigned int nbytes, int ret,
- struct crypto_alg *alg)
-{
- if (ret && ret != -EINPROGRESS && ret != -EBUSY)
- atomic64_inc(&alg->stats.hash.err_cnt);
- else
- atomic64_add(nbytes, &alg->stats.hash.hash_tlen);
- crypto_alg_put(alg);
-}
-EXPORT_SYMBOL_GPL(crypto_stats_ahash_update);
-
-void crypto_stats_ahash_final(unsigned int nbytes, int ret,
- struct crypto_alg *alg)
-{
- if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
- atomic64_inc(&alg->stats.hash.err_cnt);
- } else {
- atomic64_inc(&alg->stats.hash.hash_cnt);
- atomic64_add(nbytes, &alg->stats.hash.hash_tlen);
- }
- crypto_alg_put(alg);
-}
-EXPORT_SYMBOL_GPL(crypto_stats_ahash_final);
-
-void crypto_stats_kpp_set_secret(struct crypto_alg *alg, int ret)
-{
- if (ret)
- atomic64_inc(&alg->stats.kpp.err_cnt);
- else
- atomic64_inc(&alg->stats.kpp.setsecret_cnt);
- crypto_alg_put(alg);
-}
-EXPORT_SYMBOL_GPL(crypto_stats_kpp_set_secret);
-
-void crypto_stats_kpp_generate_public_key(struct crypto_alg *alg, int ret)
-{
- if (ret)
- atomic64_inc(&alg->stats.kpp.err_cnt);
- else
- atomic64_inc(&alg->stats.kpp.generate_public_key_cnt);
- crypto_alg_put(alg);
-}
-EXPORT_SYMBOL_GPL(crypto_stats_kpp_generate_public_key);
-
-void crypto_stats_kpp_compute_shared_secret(struct crypto_alg *alg, int ret)
-{
- if (ret)
- atomic64_inc(&alg->stats.kpp.err_cnt);
- else
- atomic64_inc(&alg->stats.kpp.compute_shared_secret_cnt);
- crypto_alg_put(alg);
-}
-EXPORT_SYMBOL_GPL(crypto_stats_kpp_compute_shared_secret);
-
-void crypto_stats_rng_seed(struct crypto_alg *alg, int ret)
-{
- if (ret && ret != -EINPROGRESS && ret != -EBUSY)
- atomic64_inc(&alg->stats.rng.err_cnt);
- else
- atomic64_inc(&alg->stats.rng.seed_cnt);
- crypto_alg_put(alg);
-}
-EXPORT_SYMBOL_GPL(crypto_stats_rng_seed);
-
-void crypto_stats_rng_generate(struct crypto_alg *alg, unsigned int dlen,
- int ret)
-{
- if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
- atomic64_inc(&alg->stats.rng.err_cnt);
- } else {
- atomic64_inc(&alg->stats.rng.generate_cnt);
- atomic64_add(dlen, &alg->stats.rng.generate_tlen);
- }
- crypto_alg_put(alg);
-}
-EXPORT_SYMBOL_GPL(crypto_stats_rng_generate);
-
-void crypto_stats_skcipher_encrypt(unsigned int cryptlen, int ret,
- struct crypto_alg *alg)
-{
- if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
- atomic64_inc(&alg->stats.cipher.err_cnt);
- } else {
- atomic64_inc(&alg->stats.cipher.encrypt_cnt);
- atomic64_add(cryptlen, &alg->stats.cipher.encrypt_tlen);
- }
- crypto_alg_put(alg);
-}
-EXPORT_SYMBOL_GPL(crypto_stats_skcipher_encrypt);
-
-void crypto_stats_skcipher_decrypt(unsigned int cryptlen, int ret,
- struct crypto_alg *alg)
-{
- if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
- atomic64_inc(&alg->stats.cipher.err_cnt);
- } else {
- atomic64_inc(&alg->stats.cipher.decrypt_cnt);
- atomic64_add(cryptlen, &alg->stats.cipher.decrypt_tlen);
- }
- crypto_alg_put(alg);
-}
-EXPORT_SYMBOL_GPL(crypto_stats_skcipher_decrypt);
-#endif
-
static void __init crypto_start_tests(void)
{
+ if (IS_ENABLED(CONFIG_CRYPTO_MANAGER_DISABLE_TESTS))
+ return;
+
for (;;) {
struct crypto_larval *larval = NULL;
struct crypto_alg *q;
crypto_wait_for_test(larval);
}
- static_branch_enable(&crypto_boot_test_finished);
+ set_crypto_boot_test_finished();
}
static int __init crypto_algapi_init(void)
projects / linux-2.6-microblaze.git / blobdiff