From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933086AbdBVSDC (ORCPT ); Wed, 22 Feb 2017 13:03:02 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:39102 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S932705AbdBVSCo (ORCPT ); Wed, 22 Feb 2017 13:02:44 -0500 From: Paulo Flabiano Smorigo To: linux-kernel@vger.kernel.org Cc: benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au, herbert@gondor.apana.org.au, davem@davemloft.net, linux-crypto@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, Paulo Flabiano Smorigo Subject: [PATCH 1/2] crypto: vmx - Use skcipher for cbc fallback Date: Wed, 22 Feb 2017 15:00:15 -0300 X-Mailer: git-send-email 2.9.3 X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 17022218-0032-0000-0000-0000054145E0 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17022218-0033-0000-0000-000011C45AFF Message-Id: <20170222180015.27573-1-pfsmorigo@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-02-22_11:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=3 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1612050000 definitions=main-1702220164 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Signed-off-by: Paulo Flabiano Smorigo --- drivers/crypto/vmx/aes_cbc.c | 41 ++++++++++++++++++++--------------------- 1 file changed, 20 insertions(+), 21 deletions(-) diff --git a/drivers/crypto/vmx/aes_cbc.c b/drivers/crypto/vmx/aes_cbc.c index 94ad5c0..5aa70997 100644 --- a/drivers/crypto/vmx/aes_cbc.c +++ b/drivers/crypto/vmx/aes_cbc.c @@ -27,11 +27,12 @@ #include #include #include +#include #include "aesp8-ppc.h" struct p8_aes_cbc_ctx { - struct crypto_blkcipher *fallback; + struct crypto_skcipher *fallback; struct aes_key enc_key; struct aes_key dec_key; }; @@ -39,7 +40,7 @@ struct p8_aes_cbc_ctx { static int p8_aes_cbc_init(struct crypto_tfm *tfm) { const char *alg; - struct crypto_blkcipher *fallback; + struct crypto_skcipher *fallback; struct p8_aes_cbc_ctx *ctx = crypto_tfm_ctx(tfm); if (!(alg = crypto_tfm_alg_name(tfm))) { @@ -48,7 +49,7 @@ static int p8_aes_cbc_init(struct crypto_tfm *tfm) } fallback = - crypto_alloc_blkcipher(alg, 0, CRYPTO_ALG_NEED_FALLBACK); + crypto_alloc_skcipher(alg, 0, CRYPTO_ALG_NEED_FALLBACK); if (IS_ERR(fallback)) { printk(KERN_ERR "Failed to allocate transformation for '%s': %ld\n", @@ -58,9 +59,9 @@ static int p8_aes_cbc_init(struct crypto_tfm *tfm) printk(KERN_INFO "Using '%s' as fallback implementation.\n", crypto_tfm_alg_driver_name((struct crypto_tfm *) fallback)); - crypto_blkcipher_set_flags( + crypto_skcipher_set_flags( fallback, - crypto_blkcipher_get_flags((struct crypto_blkcipher *)tfm)); + crypto_skcipher_get_flags((struct crypto_skcipher *)tfm)); ctx->fallback = fallback; return 0; @@ -71,7 +72,7 @@ static void p8_aes_cbc_exit(struct crypto_tfm *tfm) struct p8_aes_cbc_ctx *ctx = crypto_tfm_ctx(tfm); if (ctx->fallback) { - crypto_free_blkcipher(ctx->fallback); + crypto_free_skcipher(ctx->fallback); ctx->fallback = NULL; } } @@ -91,7 +92,7 @@ static int p8_aes_cbc_setkey(struct crypto_tfm *tfm, const u8 *key, pagefault_enable(); preempt_enable(); - ret += crypto_blkcipher_setkey(ctx->fallback, key, keylen); + ret += crypto_skcipher_setkey(ctx->fallback, key, keylen); return ret; } @@ -103,15 +104,14 @@ static int p8_aes_cbc_encrypt(struct blkcipher_desc *desc, struct blkcipher_walk walk; struct p8_aes_cbc_ctx *ctx = crypto_tfm_ctx(crypto_blkcipher_tfm(desc->tfm)); - struct blkcipher_desc fallback_desc = { - .tfm = ctx->fallback, - .info = desc->info, - .flags = desc->flags - }; if (in_interrupt()) { - ret = crypto_blkcipher_encrypt(&fallback_desc, dst, src, - nbytes); + SKCIPHER_REQUEST_ON_STACK(req, ctx->fallback); + skcipher_request_set_tfm(req, ctx->fallback); + skcipher_request_set_callback(req, desc->flags, NULL, NULL); + skcipher_request_set_crypt(req, src, dst, nbytes, desc->info); + ret = crypto_skcipher_encrypt(req); + skcipher_request_zero(req); } else { preempt_disable(); pagefault_disable(); @@ -144,15 +144,14 @@ static int p8_aes_cbc_decrypt(struct blkcipher_desc *desc, struct blkcipher_walk walk; struct p8_aes_cbc_ctx *ctx = crypto_tfm_ctx(crypto_blkcipher_tfm(desc->tfm)); - struct blkcipher_desc fallback_desc = { - .tfm = ctx->fallback, - .info = desc->info, - .flags = desc->flags - }; if (in_interrupt()) { - ret = crypto_blkcipher_decrypt(&fallback_desc, dst, src, - nbytes); + SKCIPHER_REQUEST_ON_STACK(req, ctx->fallback); + skcipher_request_set_tfm(req, ctx->fallback); + skcipher_request_set_callback(req, desc->flags, NULL, NULL); + skcipher_request_set_crypt(req, src, dst, nbytes, desc->info); + ret = crypto_skcipher_decrypt(req); + skcipher_request_zero(req); } else { preempt_disable(); pagefault_disable(); -- 2.9.3