From patchwork Tue Jul 12 05:17:52 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Herbert Xu X-Patchwork-Id: 9224611 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 5B7A960871 for ; Tue, 12 Jul 2016 05:17:59 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5080927F17 for ; Tue, 12 Jul 2016 05:17:59 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4585827F9A; Tue, 12 Jul 2016 05:17:59 +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 786F227F7F for ; Tue, 12 Jul 2016 05:17:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751384AbcGLFR5 (ORCPT ); Tue, 12 Jul 2016 01:17:57 -0400 Received: from helcar.hengli.com.au ([209.40.204.226]:41148 "EHLO helcar.hengli.com.au" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932955AbcGLFR4 (ORCPT ); Tue, 12 Jul 2016 01:17:56 -0400 Received: from gondolin.me.apana.org.au ([192.168.0.6]) by norbury.hengli.com.au with esmtp (Exim 4.80 #3 (Debian)) id 1bMq4v-0004fG-0T for ; Tue, 12 Jul 2016 15:17:53 +1000 Received: from herbert by gondolin.me.apana.org.au with local (Exim 4.80) (envelope-from ) id 1bMq4u-0007TG-Rm; Tue, 12 Jul 2016 13:17:52 +0800 Subject: [PATCH 20/30] crypto: omap - Stop using crypto scatterwalk_bytes_sglen References: <20160712051554.GA28324@gondor.apana.org.au> To: Linux Crypto Mailing List Message-Id: From: Herbert Xu Date: Tue, 12 Jul 2016 13:17:52 +0800 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 We already have a generic function sg_nents_for_len which does the same thing. This patch switches omap over to it and also adds error handling in case the SG list is short. Signed-off-by: Herbert Xu --- drivers/crypto/omap-aes.c | 16 ++++++++++------ drivers/crypto/omap-des.c | 14 ++++++++++---- 2 files changed, 20 insertions(+), 10 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/drivers/crypto/omap-aes.c b/drivers/crypto/omap-aes.c index 8178632..4ab53a6 100644 --- a/drivers/crypto/omap-aes.c +++ b/drivers/crypto/omap-aes.c @@ -578,10 +578,12 @@ static int omap_aes_copy_sgs(struct omap_aes_dev *dd) sg_init_table(&dd->in_sgl, 1); sg_set_buf(&dd->in_sgl, buf_in, total); dd->in_sg = &dd->in_sgl; + dd->in_sg_len = 1; sg_init_table(&dd->out_sgl, 1); sg_set_buf(&dd->out_sgl, buf_out, total); dd->out_sg = &dd->out_sgl; + dd->out_sg_len = 1; return 0; } @@ -602,7 +604,6 @@ static int omap_aes_prepare_req(struct crypto_engine *engine, crypto_ablkcipher_reqtfm(req)); struct omap_aes_dev *dd = omap_aes_find_dev(ctx); struct omap_aes_reqctx *rctx; - int len; if (!dd) return -ENODEV; @@ -614,6 +615,14 @@ static int omap_aes_prepare_req(struct crypto_engine *engine, dd->in_sg = req->src; dd->out_sg = req->dst; + dd->in_sg_len = sg_nents_for_len(dd->in_sg, dd->total); + if (dd->in_sg_len < 0) + return dd->in_sg_len; + + dd->out_sg_len = sg_nents_for_len(dd->out_sg, dd->total); + if (dd->out_sg_len < 0) + return dd->out_sg_len; + if (omap_aes_check_aligned(dd->in_sg, dd->total) || omap_aes_check_aligned(dd->out_sg, dd->total)) { if (omap_aes_copy_sgs(dd)) @@ -623,11 +632,6 @@ static int omap_aes_prepare_req(struct crypto_engine *engine, dd->sgs_copied = 0; } - len = ALIGN(dd->total, AES_BLOCK_SIZE); - dd->in_sg_len = scatterwalk_bytes_sglen(dd->in_sg, len); - dd->out_sg_len = scatterwalk_bytes_sglen(dd->out_sg, len); - BUG_ON(dd->in_sg_len < 0 || dd->out_sg_len < 0); - rctx = ablkcipher_request_ctx(req); ctx = crypto_ablkcipher_ctx(crypto_ablkcipher_reqtfm(req)); rctx->mode &= FLAGS_MODE_MASK; diff --git a/drivers/crypto/omap-des.c b/drivers/crypto/omap-des.c index 3eedb03..5691434 100644 --- a/drivers/crypto/omap-des.c +++ b/drivers/crypto/omap-des.c @@ -560,10 +560,12 @@ static int omap_des_copy_sgs(struct omap_des_dev *dd) sg_init_table(&dd->in_sgl, 1); sg_set_buf(&dd->in_sgl, buf_in, dd->total); dd->in_sg = &dd->in_sgl; + dd->in_sg_len = 1; sg_init_table(&dd->out_sgl, 1); sg_set_buf(&dd->out_sgl, buf_out, dd->total); dd->out_sg = &dd->out_sgl; + dd->out_sg_len = 1; return 0; } @@ -595,6 +597,14 @@ static int omap_des_prepare_req(struct crypto_engine *engine, dd->in_sg = req->src; dd->out_sg = req->dst; + dd->in_sg_len = sg_nents_for_len(dd->in_sg, dd->total); + if (dd->in_sg_len < 0) + return dd->in_sg_len; + + dd->out_sg_len = sg_nents_for_len(dd->out_sg, dd->total); + if (dd->out_sg_len < 0) + return dd->out_sg_len; + if (omap_des_copy_needed(dd->in_sg) || omap_des_copy_needed(dd->out_sg)) { if (omap_des_copy_sgs(dd)) @@ -604,10 +614,6 @@ static int omap_des_prepare_req(struct crypto_engine *engine, dd->sgs_copied = 0; } - dd->in_sg_len = scatterwalk_bytes_sglen(dd->in_sg, dd->total); - dd->out_sg_len = scatterwalk_bytes_sglen(dd->out_sg, dd->total); - BUG_ON(dd->in_sg_len < 0 || dd->out_sg_len < 0); - rctx = ablkcipher_request_ctx(req); ctx = crypto_ablkcipher_ctx(crypto_ablkcipher_reqtfm(req)); rctx->mode &= FLAGS_MODE_MASK;