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

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

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Jussi Kivilinna 2012-06-18 14:07:03 +03:00 committed by Herbert Xu
parent ffaf915632
commit 30a0400882
2 changed files with 7 additions and 110 deletions
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116
arch/x86/crypto/twofish_avx_glue.c
View file

@ -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,

1
crypto/Kconfig
View file

@ -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