crypto: ablk_helper - move ablk_* functions from serpent-sse2/avx glue code to shared...

Move ablk-* functions to separate module to share common code between cipher
implementations.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/arch/x86/crypto/Makefile b/arch/x86/crypto/Makefile
index 83caa4b..ad74691 100644 (file)
--- a/arch/x86/crypto/Makefile
+++ b/arch/x86/crypto/Makefile
@@ -2,6 +2,8 @@
 # Arch-specific CryptoAPI modules.
 #
 
+obj-$(CONFIG_CRYPTO_ABLK_HELPER_X86) += ablk_helper.o
+
 obj-$(CONFIG_CRYPTO_AES_586) += aes-i586.o
 obj-$(CONFIG_CRYPTO_TWOFISH_586) += twofish-i586.o
 obj-$(CONFIG_CRYPTO_SALSA20_586) += salsa20-i586.o

diff --git a/arch/x86/crypto/ablk_helper.c b/arch/x86/crypto/ablk_helper.c
new file mode 100644 (file)
index 0000000..284ca3b
--- /dev/null
+++ b/arch/x86/crypto/ablk_helper.c
@@ -0,0 +1,150 @@
+/*
+ * Shared async block cipher helpers
+ *
+ * Copyright (c) 2012 Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
+ *
+ * Based on aesni-intel_glue.c by:
+ *  Copyright (C) 2008, Intel Corp.
+ *    Author: Huang Ying <ying.huang@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
+ * USA
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/crypto.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <crypto/algapi.h>
+#include <crypto/cryptd.h>
+#include <asm/i387.h>
+#include <asm/crypto/ablk_helper.h>
+
+int ablk_set_key(struct crypto_ablkcipher *tfm, const u8 *key,
+                unsigned int key_len)
+{
+       struct async_helper_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;
+}
+EXPORT_SYMBOL_GPL(ablk_set_key);
+
+int __ablk_encrypt(struct ablkcipher_request *req)
+{
+       struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
+       struct async_helper_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);
+}
+EXPORT_SYMBOL_GPL(__ablk_encrypt);
+
+int ablk_encrypt(struct ablkcipher_request *req)
+{
+       struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
+       struct async_helper_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);
+       }
+}
+EXPORT_SYMBOL_GPL(ablk_encrypt);
+
+int ablk_decrypt(struct ablkcipher_request *req)
+{
+       struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
+       struct async_helper_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);
+       }
+}
+EXPORT_SYMBOL_GPL(ablk_decrypt);
+
+void ablk_exit(struct crypto_tfm *tfm)
+{
+       struct async_helper_ctx *ctx = crypto_tfm_ctx(tfm);
+
+       cryptd_free_ablkcipher(ctx->cryptd_tfm);
+}
+EXPORT_SYMBOL_GPL(ablk_exit);
+
+void ablk_init_common(struct crypto_tfm *tfm,
+                     struct cryptd_ablkcipher *cryptd_tfm)
+{
+       struct async_helper_ctx *ctx = crypto_tfm_ctx(tfm);
+
+       ctx->cryptd_tfm = cryptd_tfm;
+       tfm->crt_ablkcipher.reqsize = sizeof(struct ablkcipher_request) +
+               crypto_ablkcipher_reqsize(&cryptd_tfm->base);
+}
+EXPORT_SYMBOL_GPL(ablk_init_common);
+
+int ablk_init(struct crypto_tfm *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);
+
+       ablk_init_common(tfm, cryptd_tfm);
+
+       return 0;
+}
+EXPORT_SYMBOL_GPL(ablk_init);
+
+MODULE_LICENSE("GPL");

diff --git a/arch/x86/crypto/serpent_avx_glue.c b/arch/x86/crypto/serpent_avx_glue.c
index dd81bab..31eb567 100644 (file)
--- a/arch/x86/crypto/serpent_avx_glue.c
+++ b/arch/x86/crypto/serpent_avx_glue.c
@@ -40,14 +40,11 @@
 #include <asm/xcr.h>
 #include <asm/xsave.h>
 #include <asm/serpent-avx.h>
+#include <asm/crypto/ablk_helper.h>
 #include <crypto/scatterwalk.h>
 #include <linux/workqueue.h>
 #include <linux/spinlock.h>
 
-struct async_serpent_ctx {
-       struct cryptd_ablkcipher *cryptd_tfm;
-};
-
 static inline bool serpent_fpu_begin(bool fpu_enabled, unsigned int nbytes)
 {
        if (fpu_enabled)
@@ -593,106 +590,6 @@ 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_serpent_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_serpent_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_serpent_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_serpent_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_serpent_ctx *ctx = crypto_tfm_ctx(tfm);
-
-       cryptd_free_ablkcipher(ctx->cryptd_tfm);
-}
-
-static int ablk_init(struct crypto_tfm *tfm)
-{
-       struct async_serpent_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 serpent_algs[10] = { {
        .cra_name               = "__ecb-serpent-avx",
        .cra_driver_name        = "__driver-ecb-serpent-avx",
@@ -805,7 +702,7 @@ static struct crypto_alg serpent_algs[10] = { {
        .cra_priority           = 500,
        .cra_flags              = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
        .cra_blocksize          = SERPENT_BLOCK_SIZE,
-       .cra_ctxsize            = sizeof(struct async_serpent_ctx),
+       .cra_ctxsize            = sizeof(struct async_helper_ctx),
        .cra_alignmask          = 0,
        .cra_type               = &crypto_ablkcipher_type,
        .cra_module             = THIS_MODULE,
@@ -827,7 +724,7 @@ static struct crypto_alg serpent_algs[10] = { {
        .cra_priority           = 500,
        .cra_flags              = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
        .cra_blocksize          = SERPENT_BLOCK_SIZE,
-       .cra_ctxsize            = sizeof(struct async_serpent_ctx),
+       .cra_ctxsize            = sizeof(struct async_helper_ctx),
        .cra_alignmask          = 0,
        .cra_type               = &crypto_ablkcipher_type,
        .cra_module             = THIS_MODULE,
@@ -850,7 +747,7 @@ static struct crypto_alg serpent_algs[10] = { {
        .cra_priority           = 500,
        .cra_flags              = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
        .cra_blocksize          = 1,
-       .cra_ctxsize            = sizeof(struct async_serpent_ctx),
+       .cra_ctxsize            = sizeof(struct async_helper_ctx),
        .cra_alignmask          = 0,
        .cra_type               = &crypto_ablkcipher_type,
        .cra_module             = THIS_MODULE,
@@ -874,7 +771,7 @@ static struct crypto_alg serpent_algs[10] = { {
        .cra_priority           = 500,
        .cra_flags              = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
        .cra_blocksize          = SERPENT_BLOCK_SIZE,
-       .cra_ctxsize            = sizeof(struct async_serpent_ctx),
+       .cra_ctxsize            = sizeof(struct async_helper_ctx),
        .cra_alignmask          = 0,
        .cra_type               = &crypto_ablkcipher_type,
        .cra_module             = THIS_MODULE,
@@ -899,7 +796,7 @@ static struct crypto_alg serpent_algs[10] = { {
        .cra_priority           = 500,
        .cra_flags              = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
        .cra_blocksize          = SERPENT_BLOCK_SIZE,
-       .cra_ctxsize            = sizeof(struct async_serpent_ctx),
+       .cra_ctxsize            = sizeof(struct async_helper_ctx),
        .cra_alignmask          = 0,
        .cra_type               = &crypto_ablkcipher_type,
        .cra_module             = THIS_MODULE,

diff --git a/arch/x86/crypto/serpent_sse2_glue.c b/arch/x86/crypto/serpent_sse2_glue.c
index deecd25..805c91f 100644 (file)
--- a/arch/x86/crypto/serpent_sse2_glue.c
+++ b/arch/x86/crypto/serpent_sse2_glue.c
@@ -43,14 +43,11 @@
 #include <crypto/xts.h>
 #include <asm/i387.h>
 #include <asm/serpent-sse2.h>
+#include <asm/crypto/ablk_helper.h>
 #include <crypto/scatterwalk.h>
 #include <linux/workqueue.h>
 #include <linux/spinlock.h>
 
-struct async_serpent_ctx {
-       struct cryptd_ablkcipher *cryptd_tfm;
-};
-
 static inline bool serpent_fpu_begin(bool fpu_enabled, unsigned int nbytes)
 {
        if (fpu_enabled)
@@ -596,106 +593,6 @@ 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_serpent_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_serpent_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_serpent_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_serpent_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_serpent_ctx *ctx = crypto_tfm_ctx(tfm);
-
-       cryptd_free_ablkcipher(ctx->cryptd_tfm);
-}
-
-static int ablk_init(struct crypto_tfm *tfm)
-{
-       struct async_serpent_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 serpent_algs[10] = { {
        .cra_name               = "__ecb-serpent-sse2",
        .cra_driver_name        = "__driver-ecb-serpent-sse2",
@@ -808,7 +705,7 @@ static struct crypto_alg serpent_algs[10] = { {
        .cra_priority           = 400,
        .cra_flags              = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
        .cra_blocksize          = SERPENT_BLOCK_SIZE,
-       .cra_ctxsize            = sizeof(struct async_serpent_ctx),
+       .cra_ctxsize            = sizeof(struct async_helper_ctx),
        .cra_alignmask          = 0,
        .cra_type               = &crypto_ablkcipher_type,
        .cra_module             = THIS_MODULE,
@@ -830,7 +727,7 @@ static struct crypto_alg serpent_algs[10] = { {
        .cra_priority           = 400,
        .cra_flags              = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
        .cra_blocksize          = SERPENT_BLOCK_SIZE,
-       .cra_ctxsize            = sizeof(struct async_serpent_ctx),
+       .cra_ctxsize            = sizeof(struct async_helper_ctx),
        .cra_alignmask          = 0,
        .cra_type               = &crypto_ablkcipher_type,
        .cra_module             = THIS_MODULE,
@@ -853,7 +750,7 @@ static struct crypto_alg serpent_algs[10] = { {
        .cra_priority           = 400,
        .cra_flags              = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
        .cra_blocksize          = 1,
-       .cra_ctxsize            = sizeof(struct async_serpent_ctx),
+       .cra_ctxsize            = sizeof(struct async_helper_ctx),
        .cra_alignmask          = 0,
        .cra_type               = &crypto_ablkcipher_type,
        .cra_module             = THIS_MODULE,
@@ -877,7 +774,7 @@ static struct crypto_alg serpent_algs[10] = { {
        .cra_priority           = 400,
        .cra_flags              = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
        .cra_blocksize          = SERPENT_BLOCK_SIZE,
-       .cra_ctxsize            = sizeof(struct async_serpent_ctx),
+       .cra_ctxsize            = sizeof(struct async_helper_ctx),
        .cra_alignmask          = 0,
        .cra_type               = &crypto_ablkcipher_type,
        .cra_module             = THIS_MODULE,
@@ -902,7 +799,7 @@ static struct crypto_alg serpent_algs[10] = { {
        .cra_priority           = 400,
        .cra_flags              = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
        .cra_blocksize          = SERPENT_BLOCK_SIZE,
-       .cra_ctxsize            = sizeof(struct async_serpent_ctx),
+       .cra_ctxsize            = sizeof(struct async_helper_ctx),
        .cra_alignmask          = 0,
        .cra_type               = &crypto_ablkcipher_type,
        .cra_module             = THIS_MODULE,

diff --git a/arch/x86/include/asm/crypto/ablk_helper.h b/arch/x86/include/asm/crypto/ablk_helper.h
new file mode 100644 (file)
index 0000000..6d6b37c
--- /dev/null
+++ b/arch/x86/include/asm/crypto/ablk_helper.h
@@ -0,0 +1,29 @@
+/*
+ * Shared async block cipher helpers
+ */
+
+#ifndef _CRYPTO_ABLK_HELPER_H
+#define _CRYPTO_ABLK_HELPER_H
+
+#include <linux/crypto.h>
+#include <linux/kernel.h>
+#include <crypto/cryptd.h>
+
+struct async_helper_ctx {
+       struct cryptd_ablkcipher *cryptd_tfm;
+};
+
+extern int ablk_set_key(struct crypto_ablkcipher *tfm, const u8 *key,
+                       unsigned int key_len);
+
+extern int __ablk_encrypt(struct ablkcipher_request *req);
+
+extern int ablk_encrypt(struct ablkcipher_request *req);
+
+extern int ablk_decrypt(struct ablkcipher_request *req);
+
+extern void ablk_exit(struct crypto_tfm *tfm);
+
+extern int ablk_init(struct crypto_tfm *tfm);
+
+#endif /* _CRYPTO_ABLK_HELPER_H */

diff --git a/crypto/Kconfig b/crypto/Kconfig
index 2c1c2df..8e9145c 100644 (file)
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -174,6 +174,11 @@ config CRYPTO_TEST
        help
          Quick & dirty crypto test module.
 
+config CRYPTO_ABLK_HELPER_X86
+       tristate
+       depends on X86
+       select CRYPTO_CRYPTD
+
 comment "Authenticated Encryption with Associated Data"
 
 config CRYPTO_CCM
@@ -786,6 +791,7 @@ config CRYPTO_SERPENT_SSE2_X86_64
        depends on X86 && 64BIT
        select CRYPTO_ALGAPI
        select CRYPTO_CRYPTD
+       select CRYPTO_ABLK_HELPER_X86
        select CRYPTO_SERPENT
        select CRYPTO_LRW
        select CRYPTO_XTS
@@ -806,6 +812,7 @@ config CRYPTO_SERPENT_SSE2_586
        depends on X86 && !64BIT
        select CRYPTO_ALGAPI
        select CRYPTO_CRYPTD
+       select CRYPTO_ABLK_HELPER_X86
        select CRYPTO_SERPENT
        select CRYPTO_LRW
        select CRYPTO_XTS
@@ -826,6 +833,7 @@ config CRYPTO_SERPENT_AVX_X86_64
        depends on X86 && 64BIT
        select CRYPTO_ALGAPI
        select CRYPTO_CRYPTD
+       select CRYPTO_ABLK_HELPER_X86
        select CRYPTO_SERPENT
        select CRYPTO_LRW
        select CRYPTO_XTS