diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/x86/crypto/fpu.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/x86/crypto/fpu.c | 161 |
1 files changed, 0 insertions, 161 deletions
diff --git a/ANDROID_3.4.5/arch/x86/crypto/fpu.c b/ANDROID_3.4.5/arch/x86/crypto/fpu.c deleted file mode 100644 index 98d7a188..00000000 --- a/ANDROID_3.4.5/arch/x86/crypto/fpu.c +++ /dev/null @@ -1,161 +0,0 @@ -/* - * FPU: Wrapper for blkcipher touching fpu - * - * Copyright (c) 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. - * - */ - -#include <crypto/algapi.h> -#include <linux/err.h> -#include <linux/init.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <asm/i387.h> - -struct crypto_fpu_ctx { - struct crypto_blkcipher *child; -}; - -static int crypto_fpu_setkey(struct crypto_tfm *parent, const u8 *key, - unsigned int keylen) -{ - struct crypto_fpu_ctx *ctx = crypto_tfm_ctx(parent); - struct crypto_blkcipher *child = ctx->child; - int err; - - crypto_blkcipher_clear_flags(child, CRYPTO_TFM_REQ_MASK); - crypto_blkcipher_set_flags(child, crypto_tfm_get_flags(parent) & - CRYPTO_TFM_REQ_MASK); - err = crypto_blkcipher_setkey(child, key, keylen); - crypto_tfm_set_flags(parent, crypto_blkcipher_get_flags(child) & - CRYPTO_TFM_RES_MASK); - return err; -} - -static int crypto_fpu_encrypt(struct blkcipher_desc *desc_in, - struct scatterlist *dst, struct scatterlist *src, - unsigned int nbytes) -{ - int err; - struct crypto_fpu_ctx *ctx = crypto_blkcipher_ctx(desc_in->tfm); - struct crypto_blkcipher *child = ctx->child; - struct blkcipher_desc desc = { - .tfm = child, - .info = desc_in->info, - .flags = desc_in->flags & ~CRYPTO_TFM_REQ_MAY_SLEEP, - }; - - kernel_fpu_begin(); - err = crypto_blkcipher_crt(desc.tfm)->encrypt(&desc, dst, src, nbytes); - kernel_fpu_end(); - return err; -} - -static int crypto_fpu_decrypt(struct blkcipher_desc *desc_in, - struct scatterlist *dst, struct scatterlist *src, - unsigned int nbytes) -{ - int err; - struct crypto_fpu_ctx *ctx = crypto_blkcipher_ctx(desc_in->tfm); - struct crypto_blkcipher *child = ctx->child; - struct blkcipher_desc desc = { - .tfm = child, - .info = desc_in->info, - .flags = desc_in->flags & ~CRYPTO_TFM_REQ_MAY_SLEEP, - }; - - kernel_fpu_begin(); - err = crypto_blkcipher_crt(desc.tfm)->decrypt(&desc, dst, src, nbytes); - kernel_fpu_end(); - return err; -} - -static int crypto_fpu_init_tfm(struct crypto_tfm *tfm) -{ - struct crypto_instance *inst = crypto_tfm_alg_instance(tfm); - struct crypto_spawn *spawn = crypto_instance_ctx(inst); - struct crypto_fpu_ctx *ctx = crypto_tfm_ctx(tfm); - struct crypto_blkcipher *cipher; - - cipher = crypto_spawn_blkcipher(spawn); - if (IS_ERR(cipher)) - return PTR_ERR(cipher); - - ctx->child = cipher; - return 0; -} - -static void crypto_fpu_exit_tfm(struct crypto_tfm *tfm) -{ - struct crypto_fpu_ctx *ctx = crypto_tfm_ctx(tfm); - crypto_free_blkcipher(ctx->child); -} - -static struct crypto_instance *crypto_fpu_alloc(struct rtattr **tb) -{ - struct crypto_instance *inst; - struct crypto_alg *alg; - int err; - - err = crypto_check_attr_type(tb, CRYPTO_ALG_TYPE_BLKCIPHER); - if (err) - return ERR_PTR(err); - - alg = crypto_get_attr_alg(tb, CRYPTO_ALG_TYPE_BLKCIPHER, - CRYPTO_ALG_TYPE_MASK); - if (IS_ERR(alg)) - return ERR_CAST(alg); - - inst = crypto_alloc_instance("fpu", alg); - if (IS_ERR(inst)) - goto out_put_alg; - - inst->alg.cra_flags = alg->cra_flags; - inst->alg.cra_priority = alg->cra_priority; - inst->alg.cra_blocksize = alg->cra_blocksize; - inst->alg.cra_alignmask = alg->cra_alignmask; - inst->alg.cra_type = alg->cra_type; - inst->alg.cra_blkcipher.ivsize = alg->cra_blkcipher.ivsize; - inst->alg.cra_blkcipher.min_keysize = alg->cra_blkcipher.min_keysize; - inst->alg.cra_blkcipher.max_keysize = alg->cra_blkcipher.max_keysize; - inst->alg.cra_ctxsize = sizeof(struct crypto_fpu_ctx); - inst->alg.cra_init = crypto_fpu_init_tfm; - inst->alg.cra_exit = crypto_fpu_exit_tfm; - inst->alg.cra_blkcipher.setkey = crypto_fpu_setkey; - inst->alg.cra_blkcipher.encrypt = crypto_fpu_encrypt; - inst->alg.cra_blkcipher.decrypt = crypto_fpu_decrypt; - -out_put_alg: - crypto_mod_put(alg); - return inst; -} - -static void crypto_fpu_free(struct crypto_instance *inst) -{ - crypto_drop_spawn(crypto_instance_ctx(inst)); - kfree(inst); -} - -static struct crypto_template crypto_fpu_tmpl = { - .name = "fpu", - .alloc = crypto_fpu_alloc, - .free = crypto_fpu_free, - .module = THIS_MODULE, -}; - -int __init crypto_fpu_init(void) -{ - return crypto_register_template(&crypto_fpu_tmpl); -} - -void __exit crypto_fpu_exit(void) -{ - crypto_unregister_template(&crypto_fpu_tmpl); -} |