crypto: ablkcipher - remove deprecated and unused ablkcipher support

Now that all users of the deprecated ablkcipher interface have been
moved to the skcipher interface, ablkcipher is no longer used and
can be removed.

Reviewed-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 0 insertions, 106 deletions

diff --git a/crypto/skcipher.c b/crypto/skcipher.c
index 1ce8fbb85f95..13da43c84b64 100644
--- a/crypto/skcipher.c
+++ b/crypto/skcipher.c
@@ -580,9 +580,6 @@ EXPORT_SYMBOL_GPL(skcipher_walk_aead_decrypt);
 
 static unsigned int crypto_skcipher_extsize(struct crypto_alg *alg)
 {
-	if (alg->cra_type == &crypto_ablkcipher_type)
-		return sizeof(struct crypto_ablkcipher *);
-
 	return crypto_alg_extsize(alg);
 }
 
@@ -592,106 +589,6 @@ static void skcipher_set_needkey(struct crypto_skcipher *tfm)
 		crypto_skcipher_set_flags(tfm, CRYPTO_TFM_NEED_KEY);
 }
 
-static int skcipher_setkey_ablkcipher(struct crypto_skcipher *tfm,
-				      const u8 *key, unsigned int keylen)
-{
-	struct crypto_ablkcipher **ctx = crypto_skcipher_ctx(tfm);
-	struct crypto_ablkcipher *ablkcipher = *ctx;
-	int err;
-
-	crypto_ablkcipher_clear_flags(ablkcipher, ~0);
-	crypto_ablkcipher_set_flags(ablkcipher,
-				    crypto_skcipher_get_flags(tfm) &
-				    CRYPTO_TFM_REQ_MASK);
-	err = crypto_ablkcipher_setkey(ablkcipher, key, keylen);
-	crypto_skcipher_set_flags(tfm,
-				  crypto_ablkcipher_get_flags(ablkcipher) &
-				  CRYPTO_TFM_RES_MASK);
-	if (unlikely(err)) {
-		skcipher_set_needkey(tfm);
-		return err;
-	}
-
-	crypto_skcipher_clear_flags(tfm, CRYPTO_TFM_NEED_KEY);
-	return 0;
-}
-
-static int skcipher_crypt_ablkcipher(struct skcipher_request *req,
-				     int (*crypt)(struct ablkcipher_request *))
-{
-	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
-	struct crypto_ablkcipher **ctx = crypto_skcipher_ctx(tfm);
-	struct ablkcipher_request *subreq = skcipher_request_ctx(req);
-
-	ablkcipher_request_set_tfm(subreq, *ctx);
-	ablkcipher_request_set_callback(subreq, skcipher_request_flags(req),
-					req->base.complete, req->base.data);
-	ablkcipher_request_set_crypt(subreq, req->src, req->dst, req->cryptlen,
-				     req->iv);
-
-	return crypt(subreq);
-}
-
-static int skcipher_encrypt_ablkcipher(struct skcipher_request *req)
-{
-	struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req);
-	struct crypto_tfm *tfm = crypto_skcipher_tfm(skcipher);
-	struct ablkcipher_alg *alg = &tfm->__crt_alg->cra_ablkcipher;
-
-	return skcipher_crypt_ablkcipher(req, alg->encrypt);
-}
-
-static int skcipher_decrypt_ablkcipher(struct skcipher_request *req)
-{
-	struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req);
-	struct crypto_tfm *tfm = crypto_skcipher_tfm(skcipher);
-	struct ablkcipher_alg *alg = &tfm->__crt_alg->cra_ablkcipher;
-
-	return skcipher_crypt_ablkcipher(req, alg->decrypt);
-}
-
-static void crypto_exit_skcipher_ops_ablkcipher(struct crypto_tfm *tfm)
-{
-	struct crypto_ablkcipher **ctx = crypto_tfm_ctx(tfm);
-
-	crypto_free_ablkcipher(*ctx);
-}
-
-static int crypto_init_skcipher_ops_ablkcipher(struct crypto_tfm *tfm)
-{
-	struct crypto_alg *calg = tfm->__crt_alg;
-	struct crypto_skcipher *skcipher = __crypto_skcipher_cast(tfm);
-	struct crypto_ablkcipher **ctx = crypto_tfm_ctx(tfm);
-	struct crypto_ablkcipher *ablkcipher;
-	struct crypto_tfm *abtfm;
-
-	if (!crypto_mod_get(calg))
-		return -EAGAIN;
-
-	abtfm = __crypto_alloc_tfm(calg, 0, 0);
-	if (IS_ERR(abtfm)) {
-		crypto_mod_put(calg);
-		return PTR_ERR(abtfm);
-	}
-
-	ablkcipher = __crypto_ablkcipher_cast(abtfm);
-	*ctx = ablkcipher;
-	tfm->exit = crypto_exit_skcipher_ops_ablkcipher;
-
-	skcipher->setkey = skcipher_setkey_ablkcipher;
-	skcipher->encrypt = skcipher_encrypt_ablkcipher;
-	skcipher->decrypt = skcipher_decrypt_ablkcipher;
-
-	skcipher->ivsize = crypto_ablkcipher_ivsize(ablkcipher);
-	skcipher->reqsize = crypto_ablkcipher_reqsize(ablkcipher) +
-			    sizeof(struct ablkcipher_request);
-	skcipher->keysize = calg->cra_ablkcipher.max_keysize;
-
-	skcipher_set_needkey(skcipher);
-
-	return 0;
-}
-
 static int skcipher_setkey_unaligned(struct crypto_skcipher *tfm,
 				     const u8 *key, unsigned int keylen)
 {
@@ -786,9 +683,6 @@ static int crypto_skcipher_init_tfm(struct crypto_tfm *tfm)
 	struct crypto_skcipher *skcipher = __crypto_skcipher_cast(tfm);
 	struct skcipher_alg *alg = crypto_skcipher_alg(skcipher);
 
-	if (tfm->__crt_alg->cra_type == &crypto_ablkcipher_type)
-		return crypto_init_skcipher_ops_ablkcipher(tfm);
-
 	skcipher->setkey = skcipher_setkey;
 	skcipher->encrypt = alg->encrypt;
 	skcipher->decrypt = alg->decrypt;