diff options
| author |   Eric Biggers <ebiggers@google.com> | 2025-05-05 12:10:43 -0700 |
|---|---|---|
| committer |   Herbert Xu <herbert@gondor.apana.org.au> | 2025-05-12 13:32:53 +0800 |
| commit | c10f66b0acc4ec9db4d443779871132108e57f10 (patch) | |
| tree | 6d897e31180a1bed8357a81f7a6de27fe9efb3af /crypto | |
| parent | crypto: krb5enc - do not select CRYPTO_NULL (diff) | |
| download | wireguard-linux-c10f66b0acc4ec9db4d443779871132108e57f10.tar.xz wireguard-linux-c10f66b0acc4ec9db4d443779871132108e57f10.zip | |
crypto: null - remove the default null skcipher
crypto_get_default_null_skcipher() and
crypto_put_default_null_skcipher() are no longer used, so remove them.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/crypto_null.c | 53 |
1 files changed, 0 insertions, 53 deletions
diff --git a/crypto/crypto_null.c b/crypto/crypto_null.c index 5822753b0995..48c71b925f37 100644 --- a/crypto/crypto_null.c +++ b/crypto/crypto_null.c @@ -17,13 +17,8 @@ #include <crypto/internal/skcipher.h> #include <linux/init.h> #include <linux/module.h> -#include <linux/spinlock.h> #include <linux/string.h> -static DEFINE_SPINLOCK(crypto_default_null_skcipher_lock); -static struct crypto_sync_skcipher *crypto_default_null_skcipher; -static int crypto_default_null_skcipher_refcnt; - static int null_init(struct shash_desc *desc) { return 0; @@ -129,54 +124,6 @@ static struct crypto_alg cipher_null = { MODULE_ALIAS_CRYPTO("digest_null"); MODULE_ALIAS_CRYPTO("cipher_null"); -struct crypto_sync_skcipher *crypto_get_default_null_skcipher(void) -{ - struct crypto_sync_skcipher *ntfm = NULL; - struct crypto_sync_skcipher *tfm; - - spin_lock_bh(&crypto_default_null_skcipher_lock); - tfm = crypto_default_null_skcipher; - - if (!tfm) { - spin_unlock_bh(&crypto_default_null_skcipher_lock); - - ntfm = crypto_alloc_sync_skcipher("ecb(cipher_null)", 0, 0); - if (IS_ERR(ntfm)) - return ntfm; - - spin_lock_bh(&crypto_default_null_skcipher_lock); - tfm = crypto_default_null_skcipher; - if (!tfm) { - tfm = ntfm; - ntfm = NULL; - crypto_default_null_skcipher = tfm; - } - } - - crypto_default_null_skcipher_refcnt++; - spin_unlock_bh(&crypto_default_null_skcipher_lock); - - crypto_free_sync_skcipher(ntfm); - - return tfm; -} -EXPORT_SYMBOL_GPL(crypto_get_default_null_skcipher); - -void crypto_put_default_null_skcipher(void) -{ - struct crypto_sync_skcipher *tfm = NULL; - - spin_lock_bh(&crypto_default_null_skcipher_lock); - if (!--crypto_default_null_skcipher_refcnt) { - tfm = crypto_default_null_skcipher; - crypto_default_null_skcipher = NULL; - } - spin_unlock_bh(&crypto_default_null_skcipher_lock); - - crypto_free_sync_skcipher(tfm); -} -EXPORT_SYMBOL_GPL(crypto_put_default_null_skcipher); - static int __init crypto_null_mod_init(void) { int ret = 0; |