cregit-Linux how code gets into the kernel

Release 4.7 crypto/ablk_helper.c

Directory: crypto
/*
 * 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; }

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ard biesheuvelard biesheuvel89100.00%1100.00%
Total89100.00%1100.00%

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); }

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ard biesheuvelard biesheuvel85100.00%1100.00%
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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); } }

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ard biesheuvelard biesheuvel7997.53%150.00%
fengguang wufengguang wu22.47%150.00%
Total81100.00%2100.00%

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); } }

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ard biesheuvelard biesheuvel12898.46%150.00%
fengguang wufengguang wu21.54%150.00%
Total130100.00%2100.00%

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); }

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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; }

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ard biesheuvelard biesheuvel8197.59%150.00%
stephan muellerstephan mueller22.41%150.00%
Total83100.00%2100.00%

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); }

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Total41100.00%1100.00%

EXPORT_SYMBOL_GPL(ablk_init); MODULE_LICENSE("GPL");

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ard biesheuvelard biesheuvel59899.01%133.33%
fengguang wufengguang wu40.66%133.33%
stephan muellerstephan mueller20.33%133.33%
Total604100.00%3100.00%
Directory: crypto
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