1 files changed, 265 insertions, 105 deletions

diff --git a/arch/s390/crypto/des_s390.c b/arch/s390/crypto/des_s390.c
index cc54201..a52bfd1 100644
--- a/arch/s390/crypto/des_s390.c
+++ b/arch/s390/crypto/des_s390.c
@@ -3,7 +3,7 @@
  *
  * s390 implementation of the DES Cipher Algorithm.
  *
- * Copyright IBM Corp. 2003,2007
+ * Copyright IBM Corp. 2003,2011
  * Author(s): Thomas Spatzier
  *	      Jan Glauber (jan.glauber@de.ibm.com)
  *
@@ -22,22 +22,19 @@
 
 #include "crypt_s390.h"
 
-#define DES3_192_KEY_SIZE	(3 * DES_KEY_SIZE)
+#define DES3_KEY_SIZE	(3 * DES_KEY_SIZE)
 
-struct crypt_s390_des_ctx {
-	u8 iv[DES_BLOCK_SIZE];
-	u8 key[DES_KEY_SIZE];
-};
+static u8 *ctrblk;
 
-struct crypt_s390_des3_192_ctx {
+struct s390_des_ctx {
 	u8 iv[DES_BLOCK_SIZE];
-	u8 key[DES3_192_KEY_SIZE];
+	u8 key[DES3_KEY_SIZE];
 };
 
 static int des_setkey(struct crypto_tfm *tfm, const u8 *key,
-		      unsigned int keylen)
+		      unsigned int key_len)
 {
-	struct crypt_s390_des_ctx *dctx = crypto_tfm_ctx(tfm);
+	struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm);
 	u32 *flags = &tfm->crt_flags;
 	u32 tmp[DES_EXPKEY_WORDS];
 
@@ -47,22 +44,22 @@ static int des_setkey(struct crypto_tfm *tfm, const u8 *key,
 		return -EINVAL;
 	}
 
-	memcpy(dctx->key, key, keylen);
+	memcpy(ctx->key, key, key_len);
 	return 0;
 }
 
 static void des_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
 {
-	struct crypt_s390_des_ctx *dctx = crypto_tfm_ctx(tfm);
+	struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm);
 
-	crypt_s390_km(KM_DEA_ENCRYPT, dctx->key, out, in, DES_BLOCK_SIZE);
+	crypt_s390_km(KM_DEA_ENCRYPT, ctx->key, out, in, DES_BLOCK_SIZE);
 }
 
 static void des_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
 {
-	struct crypt_s390_des_ctx *dctx = crypto_tfm_ctx(tfm);
+	struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm);
 
-	crypt_s390_km(KM_DEA_DECRYPT, dctx->key, out, in, DES_BLOCK_SIZE);
+	crypt_s390_km(KM_DEA_DECRYPT, ctx->key, out, in, DES_BLOCK_SIZE);
 }
 
 static struct crypto_alg des_alg = {
@@ -71,7 +68,7 @@ static struct crypto_alg des_alg = {
 	.cra_priority		=	CRYPT_S390_PRIORITY,
 	.cra_flags		=	CRYPTO_ALG_TYPE_CIPHER,
 	.cra_blocksize		=	DES_BLOCK_SIZE,
-	.cra_ctxsize		=	sizeof(struct crypt_s390_des_ctx),
+	.cra_ctxsize		=	sizeof(struct s390_des_ctx),
 	.cra_module		=	THIS_MODULE,
 	.cra_list		=	LIST_HEAD_INIT(des_alg.cra_list),
 	.cra_u			=	{
@@ -86,7 +83,7 @@ static struct crypto_alg des_alg = {
 };
 
 static int ecb_desall_crypt(struct blkcipher_desc *desc, long func,
-			    void *param, struct blkcipher_walk *walk)
+			    u8 *key, struct blkcipher_walk *walk)
 {
 	int ret = blkcipher_walk_virt(desc, walk);
 	unsigned int nbytes;
@@ -97,7 +94,7 @@ static int ecb_desall_crypt(struct blkcipher_desc *desc, long func,
 		u8 *out = walk->dst.virt.addr;
 		u8 *in = walk->src.virt.addr;
 
-		ret = crypt_s390_km(func, param, out, in, n);
+		ret = crypt_s390_km(func, key, out, in, n);
 		BUG_ON((ret < 0) || (ret != n));
 
 		nbytes &= DES_BLOCK_SIZE - 1;
@@ -108,7 +105,7 @@ static int ecb_desall_crypt(struct blkcipher_desc *desc, long func,
 }
 
 static int cbc_desall_crypt(struct blkcipher_desc *desc, long func,
-			    void *param, struct blkcipher_walk *walk)
+			    u8 *iv, struct blkcipher_walk *walk)
 {
 	int ret = blkcipher_walk_virt(desc, walk);
 	unsigned int nbytes = walk->nbytes;
@@ -116,20 +113,20 @@ static int cbc_desall_crypt(struct blkcipher_desc *desc, long func,
 	if (!nbytes)
 		goto out;
 
-	memcpy(param, walk->iv, DES_BLOCK_SIZE);
+	memcpy(iv, walk->iv, DES_BLOCK_SIZE);
 	do {
 		/* only use complete blocks */
 		unsigned int n = nbytes & ~(DES_BLOCK_SIZE - 1);
 		u8 *out = walk->dst.virt.addr;
 		u8 *in = walk->src.virt.addr;
 
-		ret = crypt_s390_kmc(func, param, out, in, n);
+		ret = crypt_s390_kmc(func, iv, out, in, n);
 		BUG_ON((ret < 0) || (ret != n));
 
 		nbytes &= DES_BLOCK_SIZE - 1;
 		ret = blkcipher_walk_done(desc, walk, nbytes);
 	} while ((nbytes = walk->nbytes));
-	memcpy(walk->iv, param, DES_BLOCK_SIZE);
+	memcpy(walk->iv, iv, DES_BLOCK_SIZE);
 
 out:
 	return ret;
@@ -139,22 +136,22 @@ static int ecb_des_encrypt(struct blkcipher_desc *desc,
 			   struct scatterlist *dst, struct scatterlist *src,
 			   unsigned int nbytes)
 {
-	struct crypt_s390_des_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
+	struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
 	struct blkcipher_walk walk;
 
 	blkcipher_walk_init(&walk, dst, src, nbytes);
-	return ecb_desall_crypt(desc, KM_DEA_ENCRYPT, sctx->key, &walk);
+	return ecb_desall_crypt(desc, KM_DEA_ENCRYPT, ctx->key, &walk);
 }
 
 static int ecb_des_decrypt(struct blkcipher_desc *desc,
 			   struct scatterlist *dst, struct scatterlist *src,
 			   unsigned int nbytes)
 {
-	struct crypt_s390_des_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
+	struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
 	struct blkcipher_walk walk;
 
 	blkcipher_walk_init(&walk, dst, src, nbytes);
-	return ecb_desall_crypt(desc, KM_DEA_DECRYPT, sctx->key, &walk);
+	return ecb_desall_crypt(desc, KM_DEA_DECRYPT, ctx->key, &walk);
 }
 
 static struct crypto_alg ecb_des_alg = {
@@ -163,7 +160,7 @@ static struct crypto_alg ecb_des_alg = {
 	.cra_priority		=	CRYPT_S390_COMPOSITE_PRIORITY,
 	.cra_flags		=	CRYPTO_ALG_TYPE_BLKCIPHER,
 	.cra_blocksize		=	DES_BLOCK_SIZE,
-	.cra_ctxsize		=	sizeof(struct crypt_s390_des_ctx),
+	.cra_ctxsize		=	sizeof(struct s390_des_ctx),
 	.cra_type		=	&crypto_blkcipher_type,
 	.cra_module		=	THIS_MODULE,
 	.cra_list		=	LIST_HEAD_INIT(ecb_des_alg.cra_list),
@@ -182,22 +179,22 @@ static int cbc_des_encrypt(struct blkcipher_desc *desc,
 			   struct scatterlist *dst, struct scatterlist *src,
 			   unsigned int nbytes)
 {
-	struct crypt_s390_des_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
+	struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
 	struct blkcipher_walk walk;
 
 	blkcipher_walk_init(&walk, dst, src, nbytes);
-	return cbc_desall_crypt(desc, KMC_DEA_ENCRYPT, sctx->iv, &walk);
+	return cbc_desall_crypt(desc, KMC_DEA_ENCRYPT, ctx->iv, &walk);
 }
 
 static int cbc_des_decrypt(struct blkcipher_desc *desc,
 			   struct scatterlist *dst, struct scatterlist *src,
 			   unsigned int nbytes)
 {
-	struct crypt_s390_des_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
+	struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
 	struct blkcipher_walk walk;
 
 	blkcipher_walk_init(&walk, dst, src, nbytes);
-	return cbc_desall_crypt(desc, KMC_DEA_DECRYPT, sctx->iv, &walk);
+	return cbc_desall_crypt(desc, KMC_DEA_DECRYPT, ctx->iv, &walk);
 }
 
 static struct crypto_alg cbc_des_alg = {
@@ -206,7 +203,7 @@ static struct crypto_alg cbc_des_alg = {
 	.cra_priority		=	CRYPT_S390_COMPOSITE_PRIORITY,
 	.cra_flags		=	CRYPTO_ALG_TYPE_BLKCIPHER,
 	.cra_blocksize		=	DES_BLOCK_SIZE,
-	.cra_ctxsize		=	sizeof(struct crypt_s390_des_ctx),
+	.cra_ctxsize		=	sizeof(struct s390_des_ctx),
 	.cra_type		=	&crypto_blkcipher_type,
 	.cra_module		=	THIS_MODULE,
 	.cra_list		=	LIST_HEAD_INIT(cbc_des_alg.cra_list),
@@ -235,10 +232,10 @@ static struct crypto_alg cbc_des_alg = {
  *   property.
  *
  */
-static int des3_192_setkey(struct crypto_tfm *tfm, const u8 *key,
-			   unsigned int keylen)
+static int des3_setkey(struct crypto_tfm *tfm, const u8 *key,
+		       unsigned int key_len)
 {
-	struct crypt_s390_des3_192_ctx *dctx = crypto_tfm_ctx(tfm);
+	struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm);
 	u32 *flags = &tfm->crt_flags;
 
 	if (!(memcmp(key, &key[DES_KEY_SIZE], DES_KEY_SIZE) &&
@@ -248,141 +245,276 @@ static int des3_192_setkey(struct crypto_tfm *tfm, const u8 *key,
 		*flags |= CRYPTO_TFM_RES_WEAK_KEY;
 		return -EINVAL;
 	}
-	memcpy(dctx->key, key, keylen);
+	memcpy(ctx->key, key, key_len);
 	return 0;
 }
 
-static void des3_192_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
+static void des3_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
 {
-	struct crypt_s390_des3_192_ctx *dctx = crypto_tfm_ctx(tfm);
+	struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm);
 
-	crypt_s390_km(KM_TDEA_192_ENCRYPT, dctx->key, dst, (void*)src,
-		      DES_BLOCK_SIZE);
+	crypt_s390_km(KM_TDEA_192_ENCRYPT, ctx->key, dst, src, DES_BLOCK_SIZE);
 }
 
-static void des3_192_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
+static void des3_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
 {
-	struct crypt_s390_des3_192_ctx *dctx = crypto_tfm_ctx(tfm);
+	struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm);
 
-	crypt_s390_km(KM_TDEA_192_DECRYPT, dctx->key, dst, (void*)src,
-		      DES_BLOCK_SIZE);
+	crypt_s390_km(KM_TDEA_192_DECRYPT, ctx->key, dst, src, DES_BLOCK_SIZE);
 }
 
-static struct crypto_alg des3_192_alg = {
+static struct crypto_alg des3_alg = {
 	.cra_name		=	"des3_ede",
 	.cra_driver_name	=	"des3_ede-s390",
 	.cra_priority		=	CRYPT_S390_PRIORITY,
 	.cra_flags		=	CRYPTO_ALG_TYPE_CIPHER,
 	.cra_blocksize		=	DES_BLOCK_SIZE,
-	.cra_ctxsize		=	sizeof(struct crypt_s390_des3_192_ctx),
+	.cra_ctxsize		=	sizeof(struct s390_des_ctx),
 	.cra_module		=	THIS_MODULE,
-	.cra_list		=	LIST_HEAD_INIT(des3_192_alg.cra_list),
+	.cra_list		=	LIST_HEAD_INIT(des3_alg.cra_list),
 	.cra_u			=	{
 		.cipher = {
-			.cia_min_keysize	=	DES3_192_KEY_SIZE,
-			.cia_max_keysize	=	DES3_192_KEY_SIZE,
-			.cia_setkey		=	des3_192_setkey,
-			.cia_encrypt		=	des3_192_encrypt,
-			.cia_decrypt		=	des3_192_decrypt,
+			.cia_min_keysize	=	DES3_KEY_SIZE,
+			.cia_max_keysize	=	DES3_KEY_SIZE,
+			.cia_setkey		=	des3_setkey,
+			.cia_encrypt		=	des3_encrypt,
+			.cia_decrypt		=	des3_decrypt,
 		}
 	}
 };
 
-static int ecb_des3_192_encrypt(struct blkcipher_desc *desc,
-				struct scatterlist *dst,
-				struct scatterlist *src, unsigned int nbytes)
+static int ecb_des3_encrypt(struct blkcipher_desc *desc,
+			    struct scatterlist *dst, struct scatterlist *src,
+			    unsigned int nbytes)
 {
-	struct crypt_s390_des3_192_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
+	struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
 	struct blkcipher_walk walk;
 
 	blkcipher_walk_init(&walk, dst, src, nbytes);
-	return ecb_desall_crypt(desc, KM_TDEA_192_ENCRYPT, sctx->key, &walk);
+	return ecb_desall_crypt(desc, KM_TDEA_192_ENCRYPT, ctx->key, &walk);
 }
 
-static int ecb_des3_192_decrypt(struct blkcipher_desc *desc,
-				struct scatterlist *dst,
-				struct scatterlist *src, unsigned int nbytes)
+static int ecb_des3_decrypt(struct blkcipher_desc *desc,
+			    struct scatterlist *dst, struct scatterlist *src,
+			    unsigned int nbytes)
 {
-	struct crypt_s390_des3_192_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
+	struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
 	struct blkcipher_walk walk;
 
 	blkcipher_walk_init(&walk, dst, src, nbytes);
-	return ecb_desall_crypt(desc, KM_TDEA_192_DECRYPT, sctx->key, &walk);
+	return ecb_desall_crypt(desc, KM_TDEA_192_DECRYPT, ctx->key, &walk);
 }
 
-static struct crypto_alg ecb_des3_192_alg = {
+static struct crypto_alg ecb_des3_alg = {
 	.cra_name		=	"ecb(des3_ede)",
 	.cra_driver_name	=	"ecb-des3_ede-s390",
 	.cra_priority		=	CRYPT_S390_COMPOSITE_PRIORITY,
 	.cra_flags		=	CRYPTO_ALG_TYPE_BLKCIPHER,
 	.cra_blocksize		=	DES_BLOCK_SIZE,
-	.cra_ctxsize		=	sizeof(struct crypt_s390_des3_192_ctx),
+	.cra_ctxsize		=	sizeof(struct s390_des_ctx),
 	.cra_type		=	&crypto_blkcipher_type,
 	.cra_module		=	THIS_MODULE,
 	.cra_list		=	LIST_HEAD_INIT(
-						ecb_des3_192_alg.cra_list),
+						ecb_des3_alg.cra_list),
 	.cra_u			=	{
 		.blkcipher = {
-			.min_keysize		=	DES3_192_KEY_SIZE,
-			.max_keysize		=	DES3_192_KEY_SIZE,
-			.setkey			=	des3_192_setkey,
-			.encrypt		=	ecb_des3_192_encrypt,
-			.decrypt		=	ecb_des3_192_decrypt,
+			.min_keysize		=	DES3_KEY_SIZE,
+			.max_keysize		=	DES3_KEY_SIZE,
+			.setkey			=	des3_setkey,
+			.encrypt		=	ecb_des3_encrypt,
+			.decrypt		=	ecb_des3_decrypt,
 		}
 	}
 };
 
-static int cbc_des3_192_encrypt(struct blkcipher_desc *desc,
-				struct scatterlist *dst,
-				struct scatterlist *src, unsigned int nbytes)
+static int cbc_des3_encrypt(struct blkcipher_desc *desc,
+			    struct scatterlist *dst, struct scatterlist *src,
+			    unsigned int nbytes)
 {
-	struct crypt_s390_des3_192_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
+	struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
 	struct blkcipher_walk walk;
 
 	blkcipher_walk_init(&walk, dst, src, nbytes);
-	return cbc_desall_crypt(desc, KMC_TDEA_192_ENCRYPT, sctx->iv, &walk);
+	return cbc_desall_crypt(desc, KMC_TDEA_192_ENCRYPT, ctx->iv, &walk);
 }
 
-static int cbc_des3_192_decrypt(struct blkcipher_desc *desc,
-				struct scatterlist *dst,
-				struct scatterlist *src, unsigned int nbytes)
+static int cbc_des3_decrypt(struct blkcipher_desc *desc,
+			    struct scatterlist *dst, struct scatterlist *src,
+			    unsigned int nbytes)
 {
-	struct crypt_s390_des3_192_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
+	struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
 	struct blkcipher_walk walk;
 
 	blkcipher_walk_init(&walk, dst, src, nbytes);
-	return cbc_desall_crypt(desc, KMC_TDEA_192_DECRYPT, sctx->iv, &walk);
+	return cbc_desall_crypt(desc, KMC_TDEA_192_DECRYPT, ctx->iv, &walk);
 }
 
-static struct crypto_alg cbc_des3_192_alg = {
+static struct crypto_alg cbc_des3_alg = {
 	.cra_name		=	"cbc(des3_ede)",
 	.cra_driver_name	=	"cbc-des3_ede-s390",
 	.cra_priority		=	CRYPT_S390_COMPOSITE_PRIORITY,
 	.cra_flags		=	CRYPTO_ALG_TYPE_BLKCIPHER,
 	.cra_blocksize		=	DES_BLOCK_SIZE,
-	.cra_ctxsize		=	sizeof(struct crypt_s390_des3_192_ctx),
+	.cra_ctxsize		=	sizeof(struct s390_des_ctx),
 	.cra_type		=	&crypto_blkcipher_type,
 	.cra_module		=	THIS_MODULE,
 	.cra_list		=	LIST_HEAD_INIT(
-						cbc_des3_192_alg.cra_list),
+						cbc_des3_alg.cra_list),
 	.cra_u			=	{
 		.blkcipher = {
-			.min_keysize		=	DES3_192_KEY_SIZE,
-			.max_keysize		=	DES3_192_KEY_SIZE,
+			.min_keysize		=	DES3_KEY_SIZE,
+			.max_keysize		=	DES3_KEY_SIZE,
 			.ivsize			=	DES_BLOCK_SIZE,
-			.setkey			=	des3_192_setkey,
-			.encrypt		=	cbc_des3_192_encrypt,
-			.decrypt		=	cbc_des3_192_decrypt,
+			.setkey			=	des3_setkey,
+			.encrypt		=	cbc_des3_encrypt,
+			.decrypt		=	cbc_des3_decrypt,
 		}
 	}
 };
 
-static int des_s390_init(void)
+static int ctr_desall_crypt(struct blkcipher_desc *desc, long func,
+			    struct s390_des_ctx *ctx, struct blkcipher_walk *walk)
+{
+	int ret = blkcipher_walk_virt_block(desc, walk, DES_BLOCK_SIZE);
+	unsigned int i, n, nbytes;
+	u8 buf[DES_BLOCK_SIZE];
+	u8 *out, *in;
+
+	memcpy(ctrblk, walk->iv, DES_BLOCK_SIZE);
+	while ((nbytes = walk->nbytes) >= DES_BLOCK_SIZE) {
+		out = walk->dst.virt.addr;
+		in = walk->src.virt.addr;
+		while (nbytes >= DES_BLOCK_SIZE) {
+			/* align to block size, max. PAGE_SIZE */
+			n = (nbytes > PAGE_SIZE) ? PAGE_SIZE :
+				nbytes & ~(DES_BLOCK_SIZE - 1);
+			for (i = DES_BLOCK_SIZE; i < n; i += DES_BLOCK_SIZE) {
+				memcpy(ctrblk + i, ctrblk + i - DES_BLOCK_SIZE,
+				       DES_BLOCK_SIZE);
+				crypto_inc(ctrblk + i, DES_BLOCK_SIZE);
+			}
+			ret = crypt_s390_kmctr(func, ctx->key, out, in, n, ctrblk);
+			BUG_ON((ret < 0) || (ret != n));
+			if (n > DES_BLOCK_SIZE)
+				memcpy(ctrblk, ctrblk + n - DES_BLOCK_SIZE,
+				       DES_BLOCK_SIZE);
+			crypto_inc(ctrblk, DES_BLOCK_SIZE);
+			out += n;
+			in += n;
+			nbytes -= n;
+		}
+		ret = blkcipher_walk_done(desc, walk, nbytes);
+	}
+
+	/* final block may be < DES_BLOCK_SIZE, copy only nbytes */
+	if (nbytes) {
+		out = walk->dst.virt.addr;
+		in = walk->src.virt.addr;
+		ret = crypt_s390_kmctr(func, ctx->key, buf, in,
+				       DES_BLOCK_SIZE, ctrblk);
+		BUG_ON(ret < 0 || ret != DES_BLOCK_SIZE);
+		memcpy(out, buf, nbytes);
+		crypto_inc(ctrblk, DES_BLOCK_SIZE);
+		ret = blkcipher_walk_done(desc, walk, 0);
+	}
+	memcpy(walk->iv, ctrblk, DES_BLOCK_SIZE);
+	return ret;
+}
+
+static int ctr_des_encrypt(struct blkcipher_desc *desc,
+			   struct scatterlist *dst, struct scatterlist *src,
+			   unsigned int nbytes)
+{
+	struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
+	struct blkcipher_walk walk;
+
+	blkcipher_walk_init(&walk, dst, src, nbytes);
+	return ctr_desall_crypt(desc, KMCTR_DEA_ENCRYPT, ctx, &walk);
+}
+
+static int ctr_des_decrypt(struct blkcipher_desc *desc,
+			   struct scatterlist *dst, struct scatterlist *src,
+			   unsigned int nbytes)
+{
+	struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
+	struct blkcipher_walk walk;
+
+	blkcipher_walk_init(&walk, dst, src, nbytes);
+	return ctr_desall_crypt(desc, KMCTR_DEA_DECRYPT, ctx, &walk);
+}
+
+static struct crypto_alg ctr_des_alg = {
+	.cra_name		=	"ctr(des)",
+	.cra_driver_name	=	"ctr-des-s390",
+	.cra_priority		=	CRYPT_S390_COMPOSITE_PRIORITY,
+	.cra_flags		=	CRYPTO_ALG_TYPE_BLKCIPHER,
+	.cra_blocksize		=	1,
+	.cra_ctxsize		=	sizeof(struct s390_des_ctx),
+	.cra_type		=	&crypto_blkcipher_type,
+	.cra_module		=	THIS_MODULE,
+	.cra_list		=	LIST_HEAD_INIT(ctr_des_alg.cra_list),
+	.cra_u			=	{
+		.blkcipher = {
+			.min_keysize		=	DES_KEY_SIZE,
+			.max_keysize		=	DES_KEY_SIZE,
+			.ivsize			=	DES_BLOCK_SIZE,
+			.setkey			=	des_setkey,
+			.encrypt		=	ctr_des_encrypt,
+			.decrypt		=	ctr_des_decrypt,
+		}
+	}
+};
+
+static int ctr_des3_encrypt(struct blkcipher_desc *desc,
+			    struct scatterlist *dst, struct scatterlist *src,
+			    unsigned int nbytes)
+{
+	struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
+	struct blkcipher_walk walk;
+
+	blkcipher_walk_init(&walk, dst, src, nbytes);
+	return ctr_desall_crypt(desc, KMCTR_TDEA_192_ENCRYPT, ctx, &walk);
+}
+
+static int ctr_des3_decrypt(struct blkcipher_desc *desc,
+			    struct scatterlist *dst, struct scatterlist *src,
+			    unsigned int nbytes)
+{
+	struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
+	struct blkcipher_walk walk;
+
+	blkcipher_walk_init(&walk, dst, src, nbytes);
+	return ctr_desall_crypt(desc, KMCTR_TDEA_192_DECRYPT, ctx, &walk);
+}
+
+static struct crypto_alg ctr_des3_alg = {
+	.cra_name		=	"ctr(des3_ede)",
+	.cra_driver_name	=	"ctr-des3_ede-s390",
+	.cra_priority		=	CRYPT_S390_COMPOSITE_PRIORITY,
+	.cra_flags		=	CRYPTO_ALG_TYPE_BLKCIPHER,
+	.cra_blocksize		=	1,
+	.cra_ctxsize		=	sizeof(struct s390_des_ctx),
+	.cra_type		=	&crypto_blkcipher_type,
+	.cra_module		=	THIS_MODULE,
+	.cra_list		=	LIST_HEAD_INIT(ctr_des3_alg.cra_list),
+	.cra_u			=	{
+		.blkcipher = {
+			.min_keysize		=	DES3_KEY_SIZE,
+			.max_keysize		=	DES3_KEY_SIZE,
+			.ivsize			=	DES_BLOCK_SIZE,
+			.setkey			=	des3_setkey,
+			.encrypt		=	ctr_des3_encrypt,
+			.decrypt		=	ctr_des3_decrypt,
+		}
+	}
+};
+
+static int __init des_s390_init(void)
 {
 	int ret;
 
-	if (!crypt_s390_func_available(KM_DEA_ENCRYPT) ||
-	    !crypt_s390_func_available(KM_TDEA_192_ENCRYPT))
+	if (!crypt_s390_func_available(KM_DEA_ENCRYPT, CRYPT_S390_MSA) ||
+	    !crypt_s390_func_available(KM_TDEA_192_ENCRYPT, CRYPT_S390_MSA))
 		return -EOPNOTSUPP;
 
 	ret = crypto_register_alg(&des_alg);
@@ -394,23 +526,46 @@ static int des_s390_init(void)
 	ret = crypto_register_alg(&cbc_des_alg);
 	if (ret)
 		goto cbc_des_err;
-	ret = crypto_register_alg(&des3_192_alg);
+	ret = crypto_register_alg(&des3_alg);
 	if (ret)
-		goto des3_192_err;
-	ret = crypto_register_alg(&ecb_des3_192_alg);
+		goto des3_err;
+	ret = crypto_register_alg(&ecb_des3_alg);
 	if (ret)
-		goto ecb_des3_192_err;
-	ret = crypto_register_alg(&cbc_des3_192_alg);
+		goto ecb_des3_err;
+	ret = crypto_register_alg(&cbc_des3_alg);
 	if (ret)
-		goto cbc_des3_192_err;
+		goto cbc_des3_err;
+
+	if (crypt_s390_func_available(KMCTR_DEA_ENCRYPT,
+			CRYPT_S390_MSA | CRYPT_S390_MSA4) &&
+	    crypt_s390_func_available(KMCTR_TDEA_192_ENCRYPT,
+			CRYPT_S390_MSA | CRYPT_S390_MSA4)) {
+		ret = crypto_register_alg(&ctr_des_alg);
+		if (ret)
+			goto ctr_des_err;
+		ret = crypto_register_alg(&ctr_des3_alg);
+		if (ret)
+			goto ctr_des3_err;
+		ctrblk = (u8 *) __get_free_page(GFP_KERNEL);
+		if (!ctrblk) {
+			ret = -ENOMEM;
+			goto ctr_mem_err;
+		}
+	}
 out:
 	return ret;
 
-cbc_des3_192_err:
-	crypto_unregister_alg(&ecb_des3_192_alg);
-ecb_des3_192_err:
-	crypto_unregister_alg(&des3_192_alg);
-des3_192_err:
+ctr_mem_err:
+	crypto_unregister_alg(&ctr_des3_alg);
+ctr_des3_err:
+	crypto_unregister_alg(&ctr_des_alg);
+ctr_des_err:
+	crypto_unregister_alg(&cbc_des3_alg);
+cbc_des3_err:
+	crypto_unregister_alg(&ecb_des3_alg);
+ecb_des3_err:
+	crypto_unregister_alg(&des3_alg);
+des3_err:
 	crypto_unregister_alg(&cbc_des_alg);
 cbc_des_err:
 	crypto_unregister_alg(&ecb_des_alg);
@@ -422,9 +577,14 @@ des_err:
 
 static void __exit des_s390_exit(void)
 {
-	crypto_unregister_alg(&cbc_des3_192_alg);
-	crypto_unregister_alg(&ecb_des3_192_alg);
-	crypto_unregister_alg(&des3_192_alg);
+	if (ctrblk) {
+		crypto_unregister_alg(&ctr_des_alg);
+		crypto_unregister_alg(&ctr_des3_alg);
+		free_page((unsigned long) ctrblk);
+	}
+	crypto_unregister_alg(&cbc_des3_alg);
+	crypto_unregister_alg(&ecb_des3_alg);
+	crypto_unregister_alg(&des3_alg);
 	crypto_unregister_alg(&cbc_des_alg);
 	crypto_unregister_alg(&ecb_des_alg);
 	crypto_unregister_alg(&des_alg);