From patchwork Sun Oct 8 08:07:21 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Harsh Jain X-Patchwork-Id: 9991773 X-Patchwork-Delegate: herbert@gondor.apana.org.au Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 4146360230 for ; Sun, 8 Oct 2017 08:08:33 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3398D28710 for ; Sun, 8 Oct 2017 08:08:33 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 28AFB28792; Sun, 8 Oct 2017 08:08:33 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B3B1D28710 for ; Sun, 8 Oct 2017 08:08:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751519AbdJHIHu (ORCPT ); Sun, 8 Oct 2017 04:07:50 -0400 Received: from stargate.chelsio.com ([12.32.117.8]:22471 "EHLO stargate.chelsio.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751009AbdJHIHt (ORCPT ); Sun, 8 Oct 2017 04:07:49 -0400 Received: from heptagon.asicdesigners.com (heptagon.blr.asicdesigners.com [10.193.186.108]) by stargate.chelsio.com (8.13.8/8.13.8) with ESMTP id v9887aIN005724; Sun, 8 Oct 2017 01:07:44 -0700 From: Harsh Jain To: herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, netdev@vger.kernel.org Cc: Harsh Jain Subject: [PATCH v2 4/7] crypto:chelsio:Use x8_ble gf multiplication to calculate IV. Date: Sun, 8 Oct 2017 13:37:21 +0530 Message-Id: X-Mailer: git-send-email 2.1.4 In-Reply-To: References: In-Reply-To: References: Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP gf128mul_x8_ble() will reduce gf Multiplication iteration by 8. Signed-off-by: Harsh Jain --- drivers/crypto/chelsio/chcr_algo.c | 11 +++++++++-- drivers/crypto/chelsio/chcr_crypto.h | 1 + 2 files changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/crypto/chelsio/chcr_algo.c b/drivers/crypto/chelsio/chcr_algo.c index e4bf32d..e0ab34a 100644 --- a/drivers/crypto/chelsio/chcr_algo.c +++ b/drivers/crypto/chelsio/chcr_algo.c @@ -888,9 +888,11 @@ static int chcr_update_tweak(struct ablkcipher_request *req, u8 *iv) int ret, i; u8 *key; unsigned int keylen; + int round = reqctx->last_req_len / AES_BLOCK_SIZE; + int round8 = round / 8; cipher = ablkctx->aes_generic; - memcpy(iv, req->info, AES_BLOCK_SIZE); + memcpy(iv, reqctx->iv, AES_BLOCK_SIZE); keylen = ablkctx->enckey_len / 2; key = ablkctx->key + keylen; @@ -899,7 +901,10 @@ static int chcr_update_tweak(struct ablkcipher_request *req, u8 *iv) goto out; crypto_cipher_encrypt_one(cipher, iv, iv); - for (i = 0; i < (reqctx->processed / AES_BLOCK_SIZE); i++) + for (i = 0; i < round8; i++) + gf128mul_x8_ble((le128 *)iv, (le128 *)iv); + + for (i = 0; i < (round % 8); i++) gf128mul_x_ble((le128 *)iv, (le128 *)iv); crypto_cipher_decrypt_one(cipher, iv, iv); @@ -1040,6 +1045,7 @@ static int chcr_handle_cipher_resp(struct ablkcipher_request *req, CRYPTO_ALG_SUB_TYPE_CTR) bytes = adjust_ctr_overflow(reqctx->iv, bytes); reqctx->processed += bytes; + reqctx->last_req_len = bytes; wrparam.qid = u_ctx->lldi.rxq_ids[ctx->rx_qidx]; wrparam.req = req; wrparam.bytes = bytes; @@ -1132,6 +1138,7 @@ static int process_cipher(struct ablkcipher_request *req, goto error; } reqctx->processed = bytes; + reqctx->last_req_len = bytes; reqctx->dst = reqctx->dstsg; reqctx->op = op_type; wrparam.qid = qid; diff --git a/drivers/crypto/chelsio/chcr_crypto.h b/drivers/crypto/chelsio/chcr_crypto.h index 30af1ee..b3722b3 100644 --- a/drivers/crypto/chelsio/chcr_crypto.h +++ b/drivers/crypto/chelsio/chcr_crypto.h @@ -247,6 +247,7 @@ struct chcr_blkcipher_req_ctx { struct scatterlist *dst; struct scatterlist *newdstsg; unsigned int processed; + unsigned int last_req_len; unsigned int op; short int dst_nents; u8 iv[CHCR_MAX_CRYPTO_IV_LEN];