From patchwork Tue Oct 2 19:01:48 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leonard Crestez X-Patchwork-Id: 10623989 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-2.web.codeaurora.org (Postfix) with ESMTP id 7B173174E for ; Tue, 2 Oct 2018 19:02:08 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 70A03284E9 for ; Tue, 2 Oct 2018 19:02:08 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6351D284F9; Tue, 2 Oct 2018 19:02:08 +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=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,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 CC1E5284E9 for ; Tue, 2 Oct 2018 19:02:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727328AbeJCBqn (ORCPT ); Tue, 2 Oct 2018 21:46:43 -0400 Received: from mail-eopbgr50061.outbound.protection.outlook.com ([40.107.5.61]:57649 "EHLO EUR03-VE1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727569AbeJCBqm (ORCPT ); Tue, 2 Oct 2018 21:46:42 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=FVo9hGvvIrY/2AAA/VEtwOUhyU1ANEOMSmjuAV7zRTg=; b=MfLwcHUOwhU7iccLg2aQfJ5HiI+p582z17RHWKAh3N/Dw08zkSHxBghOePvdQGyJtLx3P9pGXAy0v1XePtJsXiDOUZbcMWzjQSslUxrxTnqH4EYtct8DtxnANBy5Z/VxFmtFPXx1YQGSjymUbREoLK6ZaQmR0LoCFsiFPnFW75o= Received: from AM0PR04MB4290.eurprd04.prod.outlook.com (52.134.126.145) by AM0PR04MB4578.eurprd04.prod.outlook.com (52.135.149.16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1185.23; Tue, 2 Oct 2018 19:01:48 +0000 Received: from AM0PR04MB4290.eurprd04.prod.outlook.com ([fe80::3836:6416:4ebd:34ef]) by AM0PR04MB4290.eurprd04.prod.outlook.com ([fe80::3836:6416:4ebd:34ef%3]) with mapi id 15.20.1185.024; Tue, 2 Oct 2018 19:01:48 +0000 From: Leonard Crestez To: Marek Vasut , Fabio Estevam , Herbert Xu CC: Horia Geanta , Franck Lenormand , Shawn Guo , Aymen Sghaier , "David S . Miller " , "linux-crypto@vger.kernel.org" , dl-linux-imx , "kernel@pengutronix.de" , "linux-kernel@vger.kernel.org" , Dan Douglass , Dan Douglass Subject: [PATCH 1/3] crypto: mxs-dcp - Implement sha import/export Thread-Topic: [PATCH 1/3] crypto: mxs-dcp - Implement sha import/export Thread-Index: AQHUWoJeTFJ8p3XaakOWssiNQRB5YQ== Date: Tue, 2 Oct 2018 19:01:48 +0000 Message-ID: <8c75f5c5dab117430313e0cfd4f2af88c9ed3d57.1538505573.git.leonard.crestez@nxp.com> References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [95.76.156.53] x-mailer: git-send-email 2.17.1 x-clientproxiedby: HE1P190CA0020.EURP190.PROD.OUTLOOK.COM (2603:10a6:3:bc::30) To AM0PR04MB4290.eurprd04.prod.outlook.com (2603:10a6:208:67::17) authentication-results: spf=none (sender IP is ) smtp.mailfrom=leonard.crestez@nxp.com; x-ms-exchange-messagesentrepresentingtype: 1 x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;AM0PR04MB4578;6:0yXVl07JDpZJJDvNyAqjoTxeKqSXizcdUwsjUxOC4ski6oOqfkdZnzylFUohiYpg5lyMegmmLWEyHPzELRbGf7bshSZDhetB3FYgKOsegd3BSxOIoXjd3NKTbk4eQ4SZGFbK8hc0FpsljLXBvs+gzSz3d+0oDNVLDvMkT+zh+7kUib4em0ScntbILY7FY+viQl3bvUcCx6NKSVChJziZ0OIGb9CrA2KnBLVHkl6fjdKJSHsrdegEtJ807HnxOp7v6sthnP0DcHNx+WyXS9O9Q6Bsu72LrBdyLREO1/xktwzcVKB6ubf6mptspxoa2XKmFLKM7YxhKaoDsewWxfBL8WylmXYp+UmOIcaV8AAimc+FWzYNR2ssuPR+yqGgyfhS8QCMX5+uWJ8aiIyV2opev+cHuuyFHA1kG/msFnTUB1MciC4MbOQ3/6ONDZnTzGzOwt4ZM29cnDtRmz2uJRX3Bw==;5:tntw2SeKUsHvsMdj5jaCGdxs0AFxPzPzyYLE14IMclsURJ0xyns+3Jv1m65nwjj9BXOlXumRJKMlpvU0EQAaXcsfmV/fHBicW36ZXjs6nHOXsunr2CbH8IrzCB3yk7sRXd5JeEsvf9lPPGxBExs2/uXSTcz9oVmNFJNwaBGQ95Y=;7:y9ld4WQmlEAmgiVmByuvvZQim0DT7QPYWN53vhO1ng9GxQLYEsHz01XkFsAO82OznN4TCJDsNoegz/keMr5OhgW6U6/0fX17w6kwi5xGa/x56IoxPv78BX1E8XvfrJBM5GVnQwU57emllIix1sg7ad7CUw5+OOWHictcU2biSrS8bjinKzEuCuusDeLiXA+D08HSvzxx5N5Cjf0Fr3yHpuHJDET23p57h2fjgEFzVhh9uh6EHd0iY0CgLktkFzgW x-ms-office365-filtering-correlation-id: fa62c575-beaa-4208-838d-08d628998139 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600074)(711020)(4618075)(2017052603328)(7153060)(7193020);SRVR:AM0PR04MB4578; x-ms-traffictypediagnostic: AM0PR04MB4578: x-microsoft-antispam-prvs: x-exchange-antispam-report-test: UriScan:(101931422205132)(185117386973197); x-ms-exchange-senderadcheck: 1 x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:(8211001083)(6040522)(2401047)(8121501046)(5005006)(3002001)(3231355)(944501410)(52105095)(93006095)(93001095)(10201501046)(6055026)(149066)(150057)(6041310)(201703131423095)(201702281528075)(20161123555045)(201703061421075)(201703061406153)(20161123564045)(20161123560045)(20161123562045)(20161123558120)(201708071742011)(7699051);SRVR:AM0PR04MB4578;BCL:0;PCL:0;RULEID:;SRVR:AM0PR04MB4578; x-forefront-prvs: 0813C68E65 x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(396003)(136003)(376002)(346002)(39860400002)(366004)(189003)(199004)(25786009)(6506007)(386003)(71200400001)(71190400001)(8676002)(86362001)(81156014)(26005)(81166006)(66066001)(68736007)(486006)(118296001)(186003)(14444005)(50226002)(102836004)(256004)(2616005)(44832011)(478600001)(305945005)(476003)(7736002)(8936002)(446003)(53936002)(39060400002)(97736004)(5660300001)(36756003)(6512007)(11346002)(2900100001)(52116002)(316002)(76176011)(110136005)(3846002)(99286004)(4326008)(5250100002)(6116002)(54906003)(106356001)(14454004)(6486002)(2906002)(105586002)(6436002);DIR:OUT;SFP:1101;SCL:1;SRVR:AM0PR04MB4578;H:AM0PR04MB4290.eurprd04.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;MX:1;A:1; received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) x-microsoft-antispam-message-info: +l2+hKDhMi8u8cVz0OLYJI7OaFjQ+FmxgoUM3ZUjj/9Kv8iOzwwlM9iZeF/o71wLGhLPLhd/sLYjuOMZW/Swb+2HLLlb6bp80RNDK74Hsb8PnxTj1VqFjSWLCfaEcAFAUyxY844tqBVTmCn0jrg5xbr6K0a28bYbtDk5rH/YcFMrW/Awhp3hB4d5E7qDu+cVpDyeYkF5t5NFNEDrzAQr3XISl/AioOZRjEMtmgCyiozKzAvK0e4dLOIkZu9RaE9S+DajykrhYnphRu6hM6HCAGRlTeLs4LJYf3HKlADciK0KZaXOBtbB03QP0DwwF/8OHxAzc9udbC6fzjBi0F1Carqmz2KwBSu/6OdKPPPKfEU= spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: fa62c575-beaa-4208-838d-08d628998139 X-MS-Exchange-CrossTenant-originalarrivaltime: 02 Oct 2018 19:01:48.5893 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR04MB4578 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 From: Dan Douglass The mxs-dcp driver fails to probe if sha1/sha256 are supported: [ 2.455404] mxs-dcp 80028000.dcp: Failed to register sha1 hash! [ 2.464042] mxs-dcp: probe of 80028000.dcp failed with error -22 This happens because since commit 8996eafdcbad ("crypto: ahash - ensure statesize is non-zero") import/export is mandatory and ahash_prepare_alg fails on statesize == 0. A set of dummy import/export functions were implemented in commit 9190b6fd5db9 ("crypto: mxs-dcp - Add empty hash export and import") but statesize is still zero and the driver fails to probe. That change was apparently part of some unrelated refactoring. Fix by actually implementing import/export. Signed-off-by: Dan Douglass Signed-off-by: Leonard Crestez --- drivers/crypto/mxs-dcp.c | 41 ++++++++++++++++++++++++++++++++-------- 1 file changed, 33 insertions(+), 8 deletions(-) diff --git a/drivers/crypto/mxs-dcp.c b/drivers/crypto/mxs-dcp.c index 4b2b8129cf35..b7f41a6b65a5 100644 --- a/drivers/crypto/mxs-dcp.c +++ b/drivers/crypto/mxs-dcp.c @@ -99,10 +99,15 @@ struct dcp_aes_req_ctx { struct dcp_sha_req_ctx { unsigned int init:1; unsigned int fini:1; }; +struct dcp_export_state { + struct dcp_sha_req_ctx req_ctx; + struct dcp_async_ctx async_ctx; +}; + /* * There can even be only one instance of the MXS DCP due to the * design of Linux Crypto API. */ static struct dcp *global_sdcp; @@ -766,18 +771,36 @@ static int dcp_sha_digest(struct ahash_request *req) return ret; return dcp_sha_finup(req); } -static int dcp_sha_noimport(struct ahash_request *req, const void *in) +static int dcp_sha_import(struct ahash_request *req, const void *in) { - return -ENOSYS; + struct dcp_sha_req_ctx *rctx = ahash_request_ctx(req); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct dcp_async_ctx *actx = crypto_ahash_ctx(tfm); + const struct dcp_export_state *export = in; + + memset(rctx, 0, sizeof(struct dcp_sha_req_ctx)); + memset(actx, 0, sizeof(struct dcp_async_ctx)); + memcpy(rctx, &export->req_ctx, sizeof(struct dcp_sha_req_ctx)); + memcpy(actx, &export->async_ctx, sizeof(struct dcp_async_ctx)); + + return 0; } -static int dcp_sha_noexport(struct ahash_request *req, void *out) +static int dcp_sha_export(struct ahash_request *req, void *out) { - return -ENOSYS; + struct dcp_sha_req_ctx *rctx_state = ahash_request_ctx(req); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct dcp_async_ctx *actx_state = crypto_ahash_ctx(tfm); + struct dcp_export_state *export = out; + + memcpy(&export->req_ctx, rctx_state, sizeof(struct dcp_sha_req_ctx)); + memcpy(&export->async_ctx, actx_state, sizeof(struct dcp_async_ctx)); + + return 0; } static int dcp_sha_cra_init(struct crypto_tfm *tfm) { crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm), @@ -846,14 +869,15 @@ static struct ahash_alg dcp_sha1_alg = { .init = dcp_sha_init, .update = dcp_sha_update, .final = dcp_sha_final, .finup = dcp_sha_finup, .digest = dcp_sha_digest, - .import = dcp_sha_noimport, - .export = dcp_sha_noexport, + .import = dcp_sha_import, + .export = dcp_sha_export, .halg = { .digestsize = SHA1_DIGEST_SIZE, + .statesize = sizeof(struct dcp_export_state), .base = { .cra_name = "sha1", .cra_driver_name = "sha1-dcp", .cra_priority = 400, .cra_alignmask = 63, @@ -872,14 +896,15 @@ static struct ahash_alg dcp_sha256_alg = { .init = dcp_sha_init, .update = dcp_sha_update, .final = dcp_sha_final, .finup = dcp_sha_finup, .digest = dcp_sha_digest, - .import = dcp_sha_noimport, - .export = dcp_sha_noexport, + .import = dcp_sha_import, + .export = dcp_sha_export, .halg = { .digestsize = SHA256_DIGEST_SIZE, + .statesize = sizeof(struct dcp_export_state), .base = { .cra_name = "sha256", .cra_driver_name = "sha256-dcp", .cra_priority = 400, .cra_alignmask = 63,