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author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/crypto/ablk_helper.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/crypto/ablk_helper.c')
-rw-r--r-- | kernel/crypto/ablk_helper.c | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/kernel/crypto/ablk_helper.c b/kernel/crypto/ablk_helper.c new file mode 100644 index 000000000..e1fcf53bb --- /dev/null +++ b/kernel/crypto/ablk_helper.c @@ -0,0 +1,151 @@ +/* + * 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 <linux/hardirq.h> +#include <crypto/algapi.h> +#include <crypto/cryptd.h> +#include <crypto/ablk_helper.h> +#include <asm/simd.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 (!may_use_simd()) { + struct ablkcipher_request *cryptd_req = + ablkcipher_request_ctx(req); + + *cryptd_req = *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 (!may_use_simd()) { + struct ablkcipher_request *cryptd_req = + ablkcipher_request_ctx(req); + + *cryptd_req = *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); + +int ablk_init_common(struct crypto_tfm *tfm, const char *drv_name) +{ + struct async_helper_ctx *ctx = crypto_tfm_ctx(tfm); + struct cryptd_ablkcipher *cryptd_tfm; + + cryptd_tfm = cryptd_alloc_ablkcipher(drv_name, CRYPTO_ALG_INTERNAL, + CRYPTO_ALG_INTERNAL); + 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; +} +EXPORT_SYMBOL_GPL(ablk_init_common); + +int ablk_init(struct crypto_tfm *tfm) +{ + char drv_name[CRYPTO_MAX_ALG_NAME]; + + snprintf(drv_name, sizeof(drv_name), "__driver-%s", + crypto_tfm_alg_driver_name(tfm)); + + return ablk_init_common(tfm, drv_name); +} +EXPORT_SYMBOL_GPL(ablk_init); + +MODULE_LICENSE("GPL"); |