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Commit 30a04008 authored by Jussi Kivilinna's avatar Jussi Kivilinna Committed by Herbert Xu
Browse files

crypto: twofish-avx - change to use shared ablk_* functions 



Remove duplicate ablk_* functions and make use of ablk_helper module instead.

Signed-off-by: default avatarJussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent ffaf9156

arch/x86/crypto/twofish_avx_glue.c

+6 −110
Original line number Diff line number Diff line
@@ -39,6 +39,7 @@ 
#include <asm/i387.h>

#include <asm/xcr.h>

#include <asm/xsave.h>

#include <asm/crypto/ablk_helper.h>

#include <crypto/scatterwalk.h>

#include <linux/workqueue.h>

#include <linux/spinlock.h>
@@ -95,11 +96,6 @@ static inline void twofish_dec_blk_xway(struct twofish_ctx *ctx, u8 *dst, 
}







struct async_twofish_ctx {

	struct cryptd_ablkcipher *cryptd_tfm;

};



static inline bool twofish_fpu_begin(bool fpu_enabled, unsigned int nbytes)

{

	if (fpu_enabled)
@@ -730,106 +726,6 @@ static int xts_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, 
	return ret;

}



static int ablk_set_key(struct crypto_ablkcipher *tfm, const u8 *key,

			unsigned int key_len)

{

	struct async_twofish_ctx *ctx = crypto_ablkcipher_ctx(tfm);

	struct crypto_ablkcipher *child = &ctx->cryptd_tfm->base;

	int err;



	crypto_ablkcipher_clear_flags(child, CRYPTO_TFM_REQ_MASK);

	crypto_ablkcipher_set_flags(child, crypto_ablkcipher_get_flags(tfm)

				    & CRYPTO_TFM_REQ_MASK);

	err = crypto_ablkcipher_setkey(child, key, key_len);

	crypto_ablkcipher_set_flags(tfm, crypto_ablkcipher_get_flags(child)

				    & CRYPTO_TFM_RES_MASK);

	return err;

}



static int __ablk_encrypt(struct ablkcipher_request *req)

{

	struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);

	struct async_twofish_ctx *ctx = crypto_ablkcipher_ctx(tfm);

	struct blkcipher_desc desc;



	desc.tfm = cryptd_ablkcipher_child(ctx->cryptd_tfm);

	desc.info = req->info;

	desc.flags = 0;



	return crypto_blkcipher_crt(desc.tfm)->encrypt(

		&desc, req->dst, req->src, req->nbytes);

}



static int ablk_encrypt(struct ablkcipher_request *req)

{

	struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);

	struct async_twofish_ctx *ctx = crypto_ablkcipher_ctx(tfm);



	if (!irq_fpu_usable()) {

		struct ablkcipher_request *cryptd_req =

			ablkcipher_request_ctx(req);



		memcpy(cryptd_req, req, sizeof(*req));

		ablkcipher_request_set_tfm(cryptd_req, &ctx->cryptd_tfm->base);



		return crypto_ablkcipher_encrypt(cryptd_req);

	} else {

		return __ablk_encrypt(req);

	}

}



static int ablk_decrypt(struct ablkcipher_request *req)

{

	struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);

	struct async_twofish_ctx *ctx = crypto_ablkcipher_ctx(tfm);



	if (!irq_fpu_usable()) {

		struct ablkcipher_request *cryptd_req =

			ablkcipher_request_ctx(req);



		memcpy(cryptd_req, req, sizeof(*req));

		ablkcipher_request_set_tfm(cryptd_req, &ctx->cryptd_tfm->base);



		return crypto_ablkcipher_decrypt(cryptd_req);

	} else {

		struct blkcipher_desc desc;



		desc.tfm = cryptd_ablkcipher_child(ctx->cryptd_tfm);

		desc.info = req->info;

		desc.flags = 0;



		return crypto_blkcipher_crt(desc.tfm)->decrypt(

			&desc, req->dst, req->src, req->nbytes);

	}

}



static void ablk_exit(struct crypto_tfm *tfm)

{

	struct async_twofish_ctx *ctx = crypto_tfm_ctx(tfm);



	cryptd_free_ablkcipher(ctx->cryptd_tfm);

}



static int ablk_init(struct crypto_tfm *tfm)

{

	struct async_twofish_ctx *ctx = crypto_tfm_ctx(tfm);

	struct cryptd_ablkcipher *cryptd_tfm;

	char drv_name[CRYPTO_MAX_ALG_NAME];



	snprintf(drv_name, sizeof(drv_name), "__driver-%s",

					crypto_tfm_alg_driver_name(tfm));



	cryptd_tfm = cryptd_alloc_ablkcipher(drv_name, 0, 0);

	if (IS_ERR(cryptd_tfm))

		return PTR_ERR(cryptd_tfm);



	ctx->cryptd_tfm = cryptd_tfm;

	tfm->crt_ablkcipher.reqsize = sizeof(struct ablkcipher_request) +

		crypto_ablkcipher_reqsize(&cryptd_tfm->base);



	return 0;

}



static struct crypto_alg twofish_algs[10] = { {

	.cra_name		= "__ecb-twofish-avx",

	.cra_driver_name	= "__driver-ecb-twofish-avx",
@@ -942,7 +838,7 @@ static struct crypto_alg twofish_algs[10] = { { 
	.cra_priority		= 400,

	.cra_flags		= CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,

	.cra_blocksize		= TF_BLOCK_SIZE,

	.cra_ctxsize		= sizeof(struct async_twofish_ctx),

	.cra_ctxsize		= sizeof(struct async_helper_ctx),

	.cra_alignmask		= 0,

	.cra_type		= &crypto_ablkcipher_type,

	.cra_module		= THIS_MODULE,
@@ -964,7 +860,7 @@ static struct crypto_alg twofish_algs[10] = { { 
	.cra_priority		= 400,

	.cra_flags		= CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,

	.cra_blocksize		= TF_BLOCK_SIZE,

	.cra_ctxsize		= sizeof(struct async_twofish_ctx),

	.cra_ctxsize		= sizeof(struct async_helper_ctx),

	.cra_alignmask		= 0,

	.cra_type		= &crypto_ablkcipher_type,

	.cra_module		= THIS_MODULE,
@@ -987,7 +883,7 @@ static struct crypto_alg twofish_algs[10] = { { 
	.cra_priority		= 400,

	.cra_flags		= CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,

	.cra_blocksize		= 1,

	.cra_ctxsize		= sizeof(struct async_twofish_ctx),

	.cra_ctxsize		= sizeof(struct async_helper_ctx),

	.cra_alignmask		= 0,

	.cra_type		= &crypto_ablkcipher_type,

	.cra_module		= THIS_MODULE,
@@ -1011,7 +907,7 @@ static struct crypto_alg twofish_algs[10] = { { 
	.cra_priority		= 400,

	.cra_flags		= CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,

	.cra_blocksize		= TF_BLOCK_SIZE,

	.cra_ctxsize		= sizeof(struct async_twofish_ctx),

	.cra_ctxsize		= sizeof(struct async_helper_ctx),

	.cra_alignmask		= 0,

	.cra_type		= &crypto_ablkcipher_type,

	.cra_module		= THIS_MODULE,
@@ -1036,7 +932,7 @@ static struct crypto_alg twofish_algs[10] = { { 
	.cra_priority		= 400,

	.cra_flags		= CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,

	.cra_blocksize		= TF_BLOCK_SIZE,

	.cra_ctxsize		= sizeof(struct async_twofish_ctx),

	.cra_ctxsize		= sizeof(struct async_helper_ctx),

	.cra_alignmask		= 0,

	.cra_type		= &crypto_ablkcipher_type,

	.cra_module		= THIS_MODULE,

crypto/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -946,6 +946,7 @@ config CRYPTO_TWOFISH_AVX_X86_64 
	depends on X86 && 64BIT

	select CRYPTO_ALGAPI

	select CRYPTO_CRYPTD

	select CRYPTO_ABLK_HELPER_X86

	select CRYPTO_TWOFISH_COMMON

	select CRYPTO_TWOFISH_X86_64

	select CRYPTO_TWOFISH_X86_64_3WAY