crypto: x86/camellia - drop CTR mode implementation

Camellia in CTR mode is never used by the kernel directly, and is highly
unlikely to be relied upon by dm-crypt or algif_skcipher. So let's drop
the accelerated CTR mode implementation, and instead, rely on the CTR
template and the bare cipher.

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

1 files changed, 0 insertions, 68 deletions

diff --git a/arch/x86/crypto/camellia_glue.c b/arch/x86/crypto/camellia_glue.c
index 242c056e5fa8..fefeedf2b33d 100644
--- a/arch/x86/crypto/camellia_glue.c
+++ b/arch/x86/crypto/camellia_glue.c
@@ -1274,42 +1274,6 @@ void camellia_decrypt_cbc_2way(const void *ctx, u8 *d, const u8 *s)
 }
 EXPORT_SYMBOL_GPL(camellia_decrypt_cbc_2way);
 
-void camellia_crypt_ctr(const void *ctx, u8 *d, const u8 *s, le128 *iv)
-{
-	be128 ctrblk;
-	u128 *dst = (u128 *)d;
-	const u128 *src = (const u128 *)s;
-
-	if (dst != src)
-		*dst = *src;
-
-	le128_to_be128(&ctrblk, iv);
-	le128_inc(iv);
-
-	camellia_enc_blk_xor(ctx, (u8 *)dst, (u8 *)&ctrblk);
-}
-EXPORT_SYMBOL_GPL(camellia_crypt_ctr);
-
-void camellia_crypt_ctr_2way(const void *ctx, u8 *d, const u8 *s, le128 *iv)
-{
-	be128 ctrblks[2];
-	u128 *dst = (u128 *)d;
-	const u128 *src = (const u128 *)s;
-
-	if (dst != src) {
-		dst[0] = src[0];
-		dst[1] = src[1];
-	}
-
-	le128_to_be128(&ctrblks[0], iv);
-	le128_inc(iv);
-	le128_to_be128(&ctrblks[1], iv);
-	le128_inc(iv);
-
-	camellia_enc_blk_xor_2way(ctx, (u8 *)dst, (u8 *)ctrblks);
-}
-EXPORT_SYMBOL_GPL(camellia_crypt_ctr_2way);
-
 static const struct common_glue_ctx camellia_enc = {
 	.num_funcs = 2,
 	.fpu_blocks_limit = -1,
@@ -1323,19 +1287,6 @@ static const struct common_glue_ctx camellia_enc = {
 	} }
 };
 
-static const struct common_glue_ctx camellia_ctr = {
-	.num_funcs = 2,
-	.fpu_blocks_limit = -1,
-
-	.funcs = { {
-		.num_blocks = 2,
-		.fn_u = { .ctr = camellia_crypt_ctr_2way }
-	}, {
-		.num_blocks = 1,
-		.fn_u = { .ctr = camellia_crypt_ctr }
-	} }
-};
-
 static const struct common_glue_ctx camellia_dec = {
 	.num_funcs = 2,
 	.fpu_blocks_limit = -1,
@@ -1382,11 +1333,6 @@ static int cbc_decrypt(struct skcipher_request *req)
 	return glue_cbc_decrypt_req_128bit(&camellia_dec_cbc, req);
 }
 
-static int ctr_crypt(struct skcipher_request *req)
-{
-	return glue_ctr_req_128bit(&camellia_ctr, req);
-}
-
 static struct crypto_alg camellia_cipher_alg = {
 	.cra_name		= "camellia",
 	.cra_driver_name	= "camellia-asm",
@@ -1433,20 +1379,6 @@ static struct skcipher_alg camellia_skcipher_algs[] = {
 		.setkey			= camellia_setkey_skcipher,
 		.encrypt		= cbc_encrypt,
 		.decrypt		= cbc_decrypt,
-	}, {
-		.base.cra_name		= "ctr(camellia)",
-		.base.cra_driver_name	= "ctr-camellia-asm",
-		.base.cra_priority	= 300,
-		.base.cra_blocksize	= 1,
-		.base.cra_ctxsize	= sizeof(struct camellia_ctx),
-		.base.cra_module	= THIS_MODULE,
-		.min_keysize		= CAMELLIA_MIN_KEY_SIZE,
-		.max_keysize		= CAMELLIA_MAX_KEY_SIZE,
-		.ivsize			= CAMELLIA_BLOCK_SIZE,
-		.chunksize		= CAMELLIA_BLOCK_SIZE,
-		.setkey			= camellia_setkey_skcipher,
-		.encrypt		= ctr_crypt,
-		.decrypt		= ctr_crypt,
 	}
 };