1 files changed, 0 insertions, 126 deletions
diff --git a/lib/crc64-rocksoft.c b/lib/crc64-rocksoft.c
deleted file mode 100644
index fc9ae0da5df7..000000000000
--- a/lib/crc64-rocksoft.c
+++ /dev/null
@@ -1,126 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-
-#include <linux/types.h>
-#include <linux/module.h>
-#include <linux/crc64.h>
-#include <linux/err.h>
-#include <linux/init.h>
-#include <crypto/hash.h>
-#include <crypto/algapi.h>
-#include <linux/static_key.h>
-#include <linux/notifier.h>
-
-static struct crypto_shash __rcu *crc64_rocksoft_tfm;
-static DEFINE_STATIC_KEY_TRUE(crc64_rocksoft_fallback);
-static DEFINE_MUTEX(crc64_rocksoft_mutex);
-static struct work_struct crc64_rocksoft_rehash_work;
-
-static int crc64_rocksoft_notify(struct notifier_block *self, unsigned long val, void *data)
-{
-	struct crypto_alg *alg = data;
-
-	if (val != CRYPTO_MSG_ALG_LOADED ||
-	    strcmp(alg->cra_name, CRC64_ROCKSOFT_STRING))
-		return NOTIFY_DONE;
-
-	schedule_work(&crc64_rocksoft_rehash_work);
-	return NOTIFY_OK;
-}
-
-static void crc64_rocksoft_rehash(struct work_struct *work)
-{
-	struct crypto_shash *new, *old;
-
-	mutex_lock(&crc64_rocksoft_mutex);
-	old = rcu_dereference_protected(crc64_rocksoft_tfm,
-					lockdep_is_held(&crc64_rocksoft_mutex));
-	new = crypto_alloc_shash(CRC64_ROCKSOFT_STRING, 0, 0);
-	if (IS_ERR(new)) {
-		mutex_unlock(&crc64_rocksoft_mutex);
-		return;
-	}
-	rcu_assign_pointer(crc64_rocksoft_tfm, new);
-	mutex_unlock(&crc64_rocksoft_mutex);
-
-	if (old) {
-		synchronize_rcu();
-		crypto_free_shash(old);
-	} else {
-		static_branch_disable(&crc64_rocksoft_fallback);
-	}
-}
-
-static struct notifier_block crc64_rocksoft_nb = {
-	.notifier_call = crc64_rocksoft_notify,
-};
-
-u64 crc64_rocksoft_update(u64 crc, const unsigned char *buffer, size_t len)
-{
-	struct {
-		struct shash_desc shash;
-		u64 crc;
-	} desc;
-	int err;
-
-	if (static_branch_unlikely(&crc64_rocksoft_fallback))
-		return crc64_rocksoft_generic(crc, buffer, len);
-
-	rcu_read_lock();
-	desc.shash.tfm = rcu_dereference(crc64_rocksoft_tfm);
-	desc.crc = crc;
-	err = crypto_shash_update(&desc.shash, buffer, len);
-	rcu_read_unlock();
-
-	BUG_ON(err);
-
-	return desc.crc;
-}
-EXPORT_SYMBOL_GPL(crc64_rocksoft_update);
-
-u64 crc64_rocksoft(const unsigned char *buffer, size_t len)
-{
-	return crc64_rocksoft_update(0, buffer, len);
-}
-EXPORT_SYMBOL_GPL(crc64_rocksoft);
-
-static int __init crc64_rocksoft_mod_init(void)
-{
-	INIT_WORK(&crc64_rocksoft_rehash_work, crc64_rocksoft_rehash);
-	crypto_register_notifier(&crc64_rocksoft_nb);
-	crc64_rocksoft_rehash(&crc64_rocksoft_rehash_work);
-	return 0;
-}
-
-static void __exit crc64_rocksoft_mod_fini(void)
-{
-	crypto_unregister_notifier(&crc64_rocksoft_nb);
-	cancel_work_sync(&crc64_rocksoft_rehash_work);
-	crypto_free_shash(rcu_dereference_protected(crc64_rocksoft_tfm, 1));
-}
-
-module_init(crc64_rocksoft_mod_init);
-module_exit(crc64_rocksoft_mod_fini);
-
-static int crc64_rocksoft_transform_show(char *buffer, const struct kernel_param *kp)
-{
-	struct crypto_shash *tfm;
-	int len;
-
-	if (static_branch_unlikely(&crc64_rocksoft_fallback))
-		return sprintf(buffer, "fallback\n");
-
-	rcu_read_lock();
-	tfm = rcu_dereference(crc64_rocksoft_tfm);
-	len = snprintf(buffer, PAGE_SIZE, "%s\n",
-		       crypto_shash_driver_name(tfm));
-	rcu_read_unlock();
-
-	return len;
-}
-
-module_param_call(transform, NULL, crc64_rocksoft_transform_show, NULL, 0444);
-
-MODULE_AUTHOR("Keith Busch <kbusch@kernel.org>");
-MODULE_DESCRIPTION("Rocksoft model CRC64 calculation (library API)");
-MODULE_LICENSE("GPL");
-MODULE_SOFTDEP("pre: crc64");