1 files changed, 98 insertions, 132 deletions

diff --git a/arch/sparc/crypto/camellia_glue.c b/arch/sparc/crypto/camellia_glue.c
index 888f6260b4ec..e7a1e1c42b99 100644
--- a/arch/sparc/crypto/camellia_glue.c
+++ b/arch/sparc/crypto/camellia_glue.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /* Glue code for CAMELLIA encryption optimized for sparc64 crypto opcodes.
  *
  * Copyright (C) 2012 David S. Miller <davem@davemloft.net>
@@ -11,13 +12,13 @@
 #include <linux/mm.h>
 #include <linux/types.h>
 #include <crypto/algapi.h>
+#include <crypto/internal/skcipher.h>
 
 #include <asm/fpumacro.h>
+#include <asm/opcodes.h>
 #include <asm/pstate.h>
 #include <asm/elf.h>
 
-#include "opcodes.h"
-
 #define CAMELLIA_MIN_KEY_SIZE        16
 #define CAMELLIA_MAX_KEY_SIZE        32
 #define CAMELLIA_BLOCK_SIZE          16
@@ -37,12 +38,9 @@ static int camellia_set_key(struct crypto_tfm *tfm, const u8 *_in_key,
 {
 	struct camellia_sparc64_ctx *ctx = crypto_tfm_ctx(tfm);
 	const u32 *in_key = (const u32 *) _in_key;
-	u32 *flags = &tfm->crt_flags;
 
-	if (key_len != 16 && key_len != 24 && key_len != 32) {
-		*flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
+	if (key_len != 16 && key_len != 24 && key_len != 32)
 		return -EINVAL;
-	}
 
 	ctx->key_len = key_len;
 
@@ -51,6 +49,12 @@ static int camellia_set_key(struct crypto_tfm *tfm, const u8 *_in_key,
 	return 0;
 }
 
+static int camellia_set_key_skcipher(struct crypto_skcipher *tfm,
+				     const u8 *in_key, unsigned int key_len)
+{
+	return camellia_set_key(crypto_skcipher_tfm(tfm), in_key, key_len);
+}
+
 extern void camellia_sparc64_crypt(const u64 *key, const u32 *input,
 				   u32 *output, unsigned int key_len);
 
@@ -80,61 +84,46 @@ typedef void ecb_crypt_op(const u64 *input, u64 *output, unsigned int len,
 extern ecb_crypt_op camellia_sparc64_ecb_crypt_3_grand_rounds;
 extern ecb_crypt_op camellia_sparc64_ecb_crypt_4_grand_rounds;
 
-#define CAMELLIA_BLOCK_MASK	(~(CAMELLIA_BLOCK_SIZE - 1))
-
-static int __ecb_crypt(struct blkcipher_desc *desc,
-		       struct scatterlist *dst, struct scatterlist *src,
-		       unsigned int nbytes, bool encrypt)
+static int __ecb_crypt(struct skcipher_request *req, bool encrypt)
 {
-	struct camellia_sparc64_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
-	struct blkcipher_walk walk;
+	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+	const struct camellia_sparc64_ctx *ctx = crypto_skcipher_ctx(tfm);
+	struct skcipher_walk walk;
 	ecb_crypt_op *op;
 	const u64 *key;
+	unsigned int nbytes;
 	int err;
 
 	op = camellia_sparc64_ecb_crypt_3_grand_rounds;
 	if (ctx->key_len != 16)
 		op = camellia_sparc64_ecb_crypt_4_grand_rounds;
 
-	blkcipher_walk_init(&walk, dst, src, nbytes);
-	err = blkcipher_walk_virt(desc, &walk);
-	desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
+	err = skcipher_walk_virt(&walk, req, true);
+	if (err)
+		return err;
 
 	if (encrypt)
 		key = &ctx->encrypt_key[0];
 	else
 		key = &ctx->decrypt_key[0];
 	camellia_sparc64_load_keys(key, ctx->key_len);
-	while ((nbytes = walk.nbytes)) {
-		unsigned int block_len = nbytes & CAMELLIA_BLOCK_MASK;
-
-		if (likely(block_len)) {
-			const u64 *src64;
-			u64 *dst64;
-
-			src64 = (const u64 *)walk.src.virt.addr;
-			dst64 = (u64 *) walk.dst.virt.addr;
-			op(src64, dst64, block_len, key);
-		}
-		nbytes &= CAMELLIA_BLOCK_SIZE - 1;
-		err = blkcipher_walk_done(desc, &walk, nbytes);
+	while ((nbytes = walk.nbytes) != 0) {
+		op(walk.src.virt.addr, walk.dst.virt.addr,
+		   round_down(nbytes, CAMELLIA_BLOCK_SIZE), key);
+		err = skcipher_walk_done(&walk, nbytes % CAMELLIA_BLOCK_SIZE);
 	}
 	fprs_write(0);
 	return err;
 }
 
-static int ecb_encrypt(struct blkcipher_desc *desc,
-		       struct scatterlist *dst, struct scatterlist *src,
-		       unsigned int nbytes)
+static int ecb_encrypt(struct skcipher_request *req)
 {
-	return __ecb_crypt(desc, dst, src, nbytes, true);
+	return __ecb_crypt(req, true);
 }
 
-static int ecb_decrypt(struct blkcipher_desc *desc,
-		       struct scatterlist *dst, struct scatterlist *src,
-		       unsigned int nbytes)
+static int ecb_decrypt(struct skcipher_request *req)
 {
-	return __ecb_crypt(desc, dst, src, nbytes, false);
+	return __ecb_crypt(req, false);
 }
 
 typedef void cbc_crypt_op(const u64 *input, u64 *output, unsigned int len,
@@ -145,85 +134,65 @@ extern cbc_crypt_op camellia_sparc64_cbc_encrypt_4_grand_rounds;
 extern cbc_crypt_op camellia_sparc64_cbc_decrypt_3_grand_rounds;
 extern cbc_crypt_op camellia_sparc64_cbc_decrypt_4_grand_rounds;
 
-static int cbc_encrypt(struct blkcipher_desc *desc,
-		       struct scatterlist *dst, struct scatterlist *src,
-		       unsigned int nbytes)
+static int cbc_encrypt(struct skcipher_request *req)
 {
-	struct camellia_sparc64_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
-	struct blkcipher_walk walk;
+	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+	const struct camellia_sparc64_ctx *ctx = crypto_skcipher_ctx(tfm);
+	struct skcipher_walk walk;
 	cbc_crypt_op *op;
 	const u64 *key;
+	unsigned int nbytes;
 	int err;
 
 	op = camellia_sparc64_cbc_encrypt_3_grand_rounds;
 	if (ctx->key_len != 16)
 		op = camellia_sparc64_cbc_encrypt_4_grand_rounds;
 
-	blkcipher_walk_init(&walk, dst, src, nbytes);
-	err = blkcipher_walk_virt(desc, &walk);
-	desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
+	err = skcipher_walk_virt(&walk, req, true);
+	if (err)
+		return err;
 
 	key = &ctx->encrypt_key[0];
 	camellia_sparc64_load_keys(key, ctx->key_len);
-	while ((nbytes = walk.nbytes)) {
-		unsigned int block_len = nbytes & CAMELLIA_BLOCK_MASK;
-
-		if (likely(block_len)) {
-			const u64 *src64;
-			u64 *dst64;
-
-			src64 = (const u64 *)walk.src.virt.addr;
-			dst64 = (u64 *) walk.dst.virt.addr;
-			op(src64, dst64, block_len, key,
-			   (u64 *) walk.iv);
-		}
-		nbytes &= CAMELLIA_BLOCK_SIZE - 1;
-		err = blkcipher_walk_done(desc, &walk, nbytes);
+	while ((nbytes = walk.nbytes) != 0) {
+		op(walk.src.virt.addr, walk.dst.virt.addr,
+		   round_down(nbytes, CAMELLIA_BLOCK_SIZE), key, walk.iv);
+		err = skcipher_walk_done(&walk, nbytes % CAMELLIA_BLOCK_SIZE);
 	}
 	fprs_write(0);
 	return err;
 }
 
-static int cbc_decrypt(struct blkcipher_desc *desc,
-		       struct scatterlist *dst, struct scatterlist *src,
-		       unsigned int nbytes)
+static int cbc_decrypt(struct skcipher_request *req)
 {
-	struct camellia_sparc64_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
-	struct blkcipher_walk walk;
+	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+	const struct camellia_sparc64_ctx *ctx = crypto_skcipher_ctx(tfm);
+	struct skcipher_walk walk;
 	cbc_crypt_op *op;
 	const u64 *key;
+	unsigned int nbytes;
 	int err;
 
 	op = camellia_sparc64_cbc_decrypt_3_grand_rounds;
 	if (ctx->key_len != 16)
 		op = camellia_sparc64_cbc_decrypt_4_grand_rounds;
 
-	blkcipher_walk_init(&walk, dst, src, nbytes);
-	err = blkcipher_walk_virt(desc, &walk);
-	desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
+	err = skcipher_walk_virt(&walk, req, true);
+	if (err)
+		return err;
 
 	key = &ctx->decrypt_key[0];
 	camellia_sparc64_load_keys(key, ctx->key_len);
-	while ((nbytes = walk.nbytes)) {
-		unsigned int block_len = nbytes & CAMELLIA_BLOCK_MASK;
-
-		if (likely(block_len)) {
-			const u64 *src64;
-			u64 *dst64;
-
-			src64 = (const u64 *)walk.src.virt.addr;
-			dst64 = (u64 *) walk.dst.virt.addr;
-			op(src64, dst64, block_len, key,
-			   (u64 *) walk.iv);
-		}
-		nbytes &= CAMELLIA_BLOCK_SIZE - 1;
-		err = blkcipher_walk_done(desc, &walk, nbytes);
+	while ((nbytes = walk.nbytes) != 0) {
+		op(walk.src.virt.addr, walk.dst.virt.addr,
+		   round_down(nbytes, CAMELLIA_BLOCK_SIZE), key, walk.iv);
+		err = skcipher_walk_done(&walk, nbytes % CAMELLIA_BLOCK_SIZE);
 	}
 	fprs_write(0);
 	return err;
 }
 
-static struct crypto_alg algs[] = { {
+static struct crypto_alg cipher_alg = {
 	.cra_name		= "camellia",
 	.cra_driver_name	= "camellia-sparc64",
 	.cra_priority		= SPARC_CR_OPCODE_PRIORITY,
@@ -241,45 +210,37 @@ static struct crypto_alg algs[] = { {
 			.cia_decrypt		= camellia_decrypt
 		}
 	}
-}, {
-	.cra_name		= "ecb(camellia)",
-	.cra_driver_name	= "ecb-camellia-sparc64",
-	.cra_priority		= SPARC_CR_OPCODE_PRIORITY,
-	.cra_flags		= CRYPTO_ALG_TYPE_BLKCIPHER,
-	.cra_blocksize		= CAMELLIA_BLOCK_SIZE,
-	.cra_ctxsize		= sizeof(struct camellia_sparc64_ctx),
-	.cra_alignmask		= 7,
-	.cra_type		= &crypto_blkcipher_type,
-	.cra_module		= THIS_MODULE,
-	.cra_u = {
-		.blkcipher = {
-			.min_keysize	= CAMELLIA_MIN_KEY_SIZE,
-			.max_keysize	= CAMELLIA_MAX_KEY_SIZE,
-			.setkey		= camellia_set_key,
-			.encrypt	= ecb_encrypt,
-			.decrypt	= ecb_decrypt,
-		},
-	},
-}, {
-	.cra_name		= "cbc(camellia)",
-	.cra_driver_name	= "cbc-camellia-sparc64",
-	.cra_priority		= SPARC_CR_OPCODE_PRIORITY,
-	.cra_flags		= CRYPTO_ALG_TYPE_BLKCIPHER,
-	.cra_blocksize		= CAMELLIA_BLOCK_SIZE,
-	.cra_ctxsize		= sizeof(struct camellia_sparc64_ctx),
-	.cra_alignmask		= 7,
-	.cra_type		= &crypto_blkcipher_type,
-	.cra_module		= THIS_MODULE,
-	.cra_u = {
-		.blkcipher = {
-			.min_keysize	= CAMELLIA_MIN_KEY_SIZE,
-			.max_keysize	= CAMELLIA_MAX_KEY_SIZE,
-			.setkey		= camellia_set_key,
-			.encrypt	= cbc_encrypt,
-			.decrypt	= cbc_decrypt,
-		},
-	},
-}
+};
+
+static struct skcipher_alg skcipher_algs[] = {
+	{
+		.base.cra_name		= "ecb(camellia)",
+		.base.cra_driver_name	= "ecb-camellia-sparc64",
+		.base.cra_priority	= SPARC_CR_OPCODE_PRIORITY,
+		.base.cra_blocksize	= CAMELLIA_BLOCK_SIZE,
+		.base.cra_ctxsize	= sizeof(struct camellia_sparc64_ctx),
+		.base.cra_alignmask	= 7,
+		.base.cra_module	= THIS_MODULE,
+		.min_keysize		= CAMELLIA_MIN_KEY_SIZE,
+		.max_keysize		= CAMELLIA_MAX_KEY_SIZE,
+		.setkey			= camellia_set_key_skcipher,
+		.encrypt		= ecb_encrypt,
+		.decrypt		= ecb_decrypt,
+	}, {
+		.base.cra_name		= "cbc(camellia)",
+		.base.cra_driver_name	= "cbc-camellia-sparc64",
+		.base.cra_priority	= SPARC_CR_OPCODE_PRIORITY,
+		.base.cra_blocksize	= CAMELLIA_BLOCK_SIZE,
+		.base.cra_ctxsize	= sizeof(struct camellia_sparc64_ctx),
+		.base.cra_alignmask	= 7,
+		.base.cra_module	= THIS_MODULE,
+		.min_keysize		= CAMELLIA_MIN_KEY_SIZE,
+		.max_keysize		= CAMELLIA_MAX_KEY_SIZE,
+		.ivsize			= CAMELLIA_BLOCK_SIZE,
+		.setkey			= camellia_set_key_skcipher,
+		.encrypt		= cbc_encrypt,
+		.decrypt		= cbc_decrypt,
+	}
 };
 
 static bool __init sparc64_has_camellia_opcode(void)
@@ -298,22 +259,27 @@ static bool __init sparc64_has_camellia_opcode(void)
 
 static int __init camellia_sparc64_mod_init(void)
 {
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(algs); i++)
-		INIT_LIST_HEAD(&algs[i].cra_list);
+	int err;
 
-	if (sparc64_has_camellia_opcode()) {
-		pr_info("Using sparc64 camellia opcodes optimized CAMELLIA implementation\n");
-		return crypto_register_algs(algs, ARRAY_SIZE(algs));
+	if (!sparc64_has_camellia_opcode()) {
+		pr_info("sparc64 camellia opcodes not available.\n");
+		return -ENODEV;
 	}
-	pr_info("sparc64 camellia opcodes not available.\n");
-	return -ENODEV;
+	pr_info("Using sparc64 camellia opcodes optimized CAMELLIA implementation\n");
+	err = crypto_register_alg(&cipher_alg);
+	if (err)
+		return err;
+	err = crypto_register_skciphers(skcipher_algs,
+					ARRAY_SIZE(skcipher_algs));
+	if (err)
+		crypto_unregister_alg(&cipher_alg);
+	return err;
 }
 
 static void __exit camellia_sparc64_mod_fini(void)
 {
-	crypto_unregister_algs(algs, ARRAY_SIZE(algs));
+	crypto_unregister_alg(&cipher_alg);
+	crypto_unregister_skciphers(skcipher_algs, ARRAY_SIZE(skcipher_algs));
 }
 
 module_init(camellia_sparc64_mod_init);
@@ -322,6 +288,6 @@ module_exit(camellia_sparc64_mod_fini);
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("Camellia Cipher Algorithm, sparc64 camellia opcode accelerated");
 
-MODULE_ALIAS("aes");
+MODULE_ALIAS_CRYPTO("camellia");
 
 #include "crop_devid.c"