add boot partition size

hc

2023-12-11 d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d

 kernel/drivers/crypto/vmx/aes_cbc.c
..
..
@@ -1,33 +1,17 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /**
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  * AES CBC routines supporting VMX instructions on the Power 8
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  *
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  * Copyright (C) 2015 International Business Machines Inc.
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  *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License as published by
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- * the Free Software Foundation; version 2 only.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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- *
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- * You should have received a copy of the GNU General Public License
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- * along with this program; if not, write to the Free Software
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- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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- *
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  * Author: Marcelo Henrique Cerri <mhcerri@br.ibm.com>
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  */
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9
 
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-#include <linux/types.h>
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-#include <linux/err.h>
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-#include <linux/crypto.h>
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-#include <linux/delay.h>
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-#include <linux/hardirq.h>
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+#include <asm/simd.h>
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11
 #include <asm/switch_to.h>
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 #include <crypto/aes.h>
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-#include <crypto/scatterwalk.h>
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-#include <crypto/skcipher.h>
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+#include <crypto/internal/simd.h>
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+#include <crypto/internal/skcipher.h>
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15
 
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 #include "aesp8-ppc.h"
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17
 
..
..
@@ -37,156 +21,113 @@
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21
 	struct aes_key dec_key;
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22
 };
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23
 
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-static int p8_aes_cbc_init(struct crypto_tfm *tfm)
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+static int p8_aes_cbc_init(struct crypto_skcipher *tfm)
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25
 {
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-	const char *alg = crypto_tfm_alg_name(tfm);
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+	struct p8_aes_cbc_ctx *ctx = crypto_skcipher_ctx(tfm);
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27
 	struct crypto_skcipher *fallback;
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-	struct p8_aes_cbc_ctx *ctx = crypto_tfm_ctx(tfm);
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28
 
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-	fallback = crypto_alloc_skcipher(alg, 0,
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-			CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK);
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-
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+	fallback = crypto_alloc_skcipher("cbc(aes)", 0,
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+					 CRYPTO_ALG_NEED_FALLBACK |
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+					 CRYPTO_ALG_ASYNC);
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32
 	if (IS_ERR(fallback)) {
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-		printk(KERN_ERR
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-		       "Failed to allocate transformation for '%s': %ld\n",
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-		       alg, PTR_ERR(fallback));
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+		pr_err("Failed to allocate cbc(aes) fallback: %ld\n",
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+		       PTR_ERR(fallback));
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35
 		return PTR_ERR(fallback);
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36
 	}
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37
 
56
-	crypto_skcipher_set_flags(
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-		fallback,
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-		crypto_skcipher_get_flags((struct crypto_skcipher *)tfm));
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+	crypto_skcipher_set_reqsize(tfm, sizeof(struct skcipher_request) +
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+				    crypto_skcipher_reqsize(fallback));
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40
 	ctx->fallback = fallback;
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-
61
41
 	return 0;
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42
 }
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43
 
64
-static void p8_aes_cbc_exit(struct crypto_tfm *tfm)
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+static void p8_aes_cbc_exit(struct crypto_skcipher *tfm)
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45
 {
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-	struct p8_aes_cbc_ctx *ctx = crypto_tfm_ctx(tfm);
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+	struct p8_aes_cbc_ctx *ctx = crypto_skcipher_ctx(tfm);
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47
 
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-	if (ctx->fallback) {
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-		crypto_free_skcipher(ctx->fallback);
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-		ctx->fallback = NULL;
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-	}
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+	crypto_free_skcipher(ctx->fallback);
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49
 }
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50
 
74
-static int p8_aes_cbc_setkey(struct crypto_tfm *tfm, const u8 *key,
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+static int p8_aes_cbc_setkey(struct crypto_skcipher *tfm, const u8 *key,
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 			     unsigned int keylen)
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 {
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+	struct p8_aes_cbc_ctx *ctx = crypto_skcipher_ctx(tfm);
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 	int ret;
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-	struct p8_aes_cbc_ctx *ctx = crypto_tfm_ctx(tfm);
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56
 
80
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 	preempt_disable();
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 	pagefault_disable();
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 	enable_kernel_vsx();
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 	ret = aes_p8_set_encrypt_key(key, keylen * 8, &ctx->enc_key);
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-	ret += aes_p8_set_decrypt_key(key, keylen * 8, &ctx->dec_key);
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+	ret |= aes_p8_set_decrypt_key(key, keylen * 8, &ctx->dec_key);
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 	disable_kernel_vsx();
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 	pagefault_enable();
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 	preempt_enable();
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65
 
89
-	ret += crypto_skcipher_setkey(ctx->fallback, key, keylen);
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-	return ret;
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+	ret |= crypto_skcipher_setkey(ctx->fallback, key, keylen);
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+
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+	return ret ? -EINVAL : 0;
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69
 }
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70
 
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-static int p8_aes_cbc_encrypt(struct blkcipher_desc *desc,
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-			      struct scatterlist *dst,
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-			      struct scatterlist *src, unsigned int nbytes)
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+static int p8_aes_cbc_crypt(struct skcipher_request *req, int enc)
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 {
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+	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
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+	const struct p8_aes_cbc_ctx *ctx = crypto_skcipher_ctx(tfm);
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+	struct skcipher_walk walk;
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+	unsigned int nbytes;
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 	int ret;
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-	struct blkcipher_walk walk;
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-	struct p8_aes_cbc_ctx *ctx =
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-		crypto_tfm_ctx(crypto_blkcipher_tfm(desc->tfm));
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102
-	if (in_interrupt()) {
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-		SKCIPHER_REQUEST_ON_STACK(req, ctx->fallback);
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-		skcipher_request_set_tfm(req, ctx->fallback);
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-		skcipher_request_set_callback(req, desc->flags, NULL, NULL);
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-		skcipher_request_set_crypt(req, src, dst, nbytes, desc->info);
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-		ret = crypto_skcipher_encrypt(req);
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-		skcipher_request_zero(req);
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-	} else {
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-		blkcipher_walk_init(&walk, dst, src, nbytes);
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-		ret = blkcipher_walk_virt(desc, &walk);
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-		while ((nbytes = walk.nbytes)) {
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-			preempt_disable();
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-			pagefault_disable();
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-			enable_kernel_vsx();
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-			aes_p8_cbc_encrypt(walk.src.virt.addr,
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-					   walk.dst.virt.addr,
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-					   nbytes & AES_BLOCK_MASK,
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-					   &ctx->enc_key, walk.iv, 1);
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-			disable_kernel_vsx();
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-			pagefault_enable();
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-			preempt_enable();
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+	if (!crypto_simd_usable()) {
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+		struct skcipher_request *subreq = skcipher_request_ctx(req);
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-			nbytes &= AES_BLOCK_SIZE - 1;
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-			ret = blkcipher_walk_done(desc, &walk, nbytes);
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-		}
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+		*subreq = *req;
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+		skcipher_request_set_tfm(subreq, ctx->fallback);
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+		return enc ? crypto_skcipher_encrypt(subreq) :
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+			     crypto_skcipher_decrypt(subreq);
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 	}
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-	return ret;
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-}
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+	ret = skcipher_walk_virt(&walk, req, false);
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+	while ((nbytes = walk.nbytes) != 0) {
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+		preempt_disable();
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+		pagefault_disable();
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+		enable_kernel_vsx();
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+		aes_p8_cbc_encrypt(walk.src.virt.addr,
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+				   walk.dst.virt.addr,
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+				   round_down(nbytes, AES_BLOCK_SIZE),
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+				   enc ? &ctx->enc_key : &ctx->dec_key,
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+				   walk.iv, enc);
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+		disable_kernel_vsx();
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+		pagefault_enable();
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+		preempt_enable();
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101
 
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-static int p8_aes_cbc_decrypt(struct blkcipher_desc *desc,
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-			      struct scatterlist *dst,
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-			      struct scatterlist *src, unsigned int nbytes)
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-{
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-	int ret;
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-	struct blkcipher_walk walk;
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-	struct p8_aes_cbc_ctx *ctx =
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-		crypto_tfm_ctx(crypto_blkcipher_tfm(desc->tfm));
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-
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-	if (in_interrupt()) {
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-		SKCIPHER_REQUEST_ON_STACK(req, ctx->fallback);
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-		skcipher_request_set_tfm(req, ctx->fallback);
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-		skcipher_request_set_callback(req, desc->flags, NULL, NULL);
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-		skcipher_request_set_crypt(req, src, dst, nbytes, desc->info);
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-		ret = crypto_skcipher_decrypt(req);
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-		skcipher_request_zero(req);
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-	} else {
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-		blkcipher_walk_init(&walk, dst, src, nbytes);
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-		ret = blkcipher_walk_virt(desc, &walk);
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-		while ((nbytes = walk.nbytes)) {
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-			preempt_disable();
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-			pagefault_disable();
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-			enable_kernel_vsx();
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-			aes_p8_cbc_encrypt(walk.src.virt.addr,
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-					   walk.dst.virt.addr,
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-					   nbytes & AES_BLOCK_MASK,
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-					   &ctx->dec_key, walk.iv, 0);
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-			disable_kernel_vsx();
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-			pagefault_enable();
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-			preempt_enable();
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-
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-			nbytes &= AES_BLOCK_SIZE - 1;
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-			ret = blkcipher_walk_done(desc, &walk, nbytes);
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-		}
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+		ret = skcipher_walk_done(&walk, nbytes % AES_BLOCK_SIZE);
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 	}
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-
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 	return ret;
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 }
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106
 
107
+static int p8_aes_cbc_encrypt(struct skcipher_request *req)
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+{
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+	return p8_aes_cbc_crypt(req, 1);
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+}
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111
 
172
-struct crypto_alg p8_aes_cbc_alg = {
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-	.cra_name = "cbc(aes)",
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-	.cra_driver_name = "p8_aes_cbc",
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-	.cra_module = THIS_MODULE,
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-	.cra_priority = 2000,
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-	.cra_type = &crypto_blkcipher_type,
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-	.cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | CRYPTO_ALG_NEED_FALLBACK,
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-	.cra_alignmask = 0,
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-	.cra_blocksize = AES_BLOCK_SIZE,
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-	.cra_ctxsize = sizeof(struct p8_aes_cbc_ctx),
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-	.cra_init = p8_aes_cbc_init,
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-	.cra_exit = p8_aes_cbc_exit,
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-	.cra_blkcipher = {
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-			  .ivsize = AES_BLOCK_SIZE,
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-			  .min_keysize = AES_MIN_KEY_SIZE,
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-			  .max_keysize = AES_MAX_KEY_SIZE,
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-			  .setkey = p8_aes_cbc_setkey,
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-			  .encrypt = p8_aes_cbc_encrypt,
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-			  .decrypt = p8_aes_cbc_decrypt,
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-	},
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+static int p8_aes_cbc_decrypt(struct skcipher_request *req)
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+{
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+	return p8_aes_cbc_crypt(req, 0);
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+}
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+
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+struct skcipher_alg p8_aes_cbc_alg = {
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+	.base.cra_name = "cbc(aes)",
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+	.base.cra_driver_name = "p8_aes_cbc",
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+	.base.cra_module = THIS_MODULE,
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+	.base.cra_priority = 2000,
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+	.base.cra_flags = CRYPTO_ALG_NEED_FALLBACK,
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+	.base.cra_blocksize = AES_BLOCK_SIZE,
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+	.base.cra_ctxsize = sizeof(struct p8_aes_cbc_ctx),
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+	.setkey = p8_aes_cbc_setkey,
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+	.encrypt = p8_aes_cbc_encrypt,
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+	.decrypt = p8_aes_cbc_decrypt,
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+	.init = p8_aes_cbc_init,
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+	.exit = p8_aes_cbc_exit,
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+	.min_keysize = AES_MIN_KEY_SIZE,
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+	.max_keysize = AES_MAX_KEY_SIZE,
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+	.ivsize = AES_BLOCK_SIZE,
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 };