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Commit f9d2691f authored by Jussi Kivilinna's avatar Jussi Kivilinna Committed by Herbert Xu
Browse files

crypto: xts - use blocksize constant 



XTS has fixed blocksize of 16. Define XTS_BLOCK_SIZE and use in place of
crypto_cipher_blocksize().

Signed-off-by: default avatarJussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 81559f9a

crypto/xts.c

+5 −3
Original line number Diff line number Diff line
@@ -24,6 +24,8 @@ 
#include <crypto/b128ops.h>

#include <crypto/gf128mul.h>



#define XTS_BLOCK_SIZE 16



struct priv {

	struct crypto_cipher *child;

	struct crypto_cipher *tweak;
@@ -96,7 +98,7 @@ static int crypt(struct blkcipher_desc *d, 
{

	int err;

	unsigned int avail;

	const int bs = crypto_cipher_blocksize(ctx->child);

	const int bs = XTS_BLOCK_SIZE;

	struct sinfo s = {

		.tfm = crypto_cipher_tfm(ctx->child),

		.fn = fn
@@ -177,7 +179,7 @@ static int init_tfm(struct crypto_tfm *tfm) 
	if (IS_ERR(cipher))

		return PTR_ERR(cipher);



	if (crypto_cipher_blocksize(cipher) != 16) {

	if (crypto_cipher_blocksize(cipher) != XTS_BLOCK_SIZE) {

		*flags |= CRYPTO_TFM_RES_BAD_BLOCK_LEN;

		crypto_free_cipher(cipher);

		return -EINVAL;
@@ -192,7 +194,7 @@ static int init_tfm(struct crypto_tfm *tfm) 
	}



	/* this check isn't really needed, leave it here just in case */

	if (crypto_cipher_blocksize(cipher) != 16) {

	if (crypto_cipher_blocksize(cipher) != XTS_BLOCK_SIZE) {

		crypto_free_cipher(cipher);

		crypto_free_cipher(ctx->child);

		*flags |= CRYPTO_TFM_RES_BAD_BLOCK_LEN;