From patchwork Sun Aug 26 02:40:05 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Martin K. Petersen" X-Patchwork-Id: 10576243 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 09B1C174C for ; Sun, 26 Aug 2018 02:41:45 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id F23E829CFA for ; Sun, 26 Aug 2018 02:41:44 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E601029D09; Sun, 26 Aug 2018 02:41:44 +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, UNPARSEABLE_RELAY autolearn=unavailable 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 A086929CFA for ; Sun, 26 Aug 2018 02:41:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726869AbeHZGW2 (ORCPT ); Sun, 26 Aug 2018 02:22:28 -0400 Received: from userp2130.oracle.com ([156.151.31.86]:42432 "EHLO userp2130.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726503AbeHZGW2 (ORCPT ); Sun, 26 Aug 2018 02:22:28 -0400 Received: from pps.filterd (userp2130.oracle.com [127.0.0.1]) by userp2130.oracle.com (8.16.0.22/8.16.0.22) with SMTP id w7Q2cVhb018143; Sun, 26 Aug 2018 02:40:11 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references; s=corp-2018-07-02; bh=2e13kRzdgf6jvIJ2TgDjQEI+9y8ibJYSbmj/+EiFKtI=; b=KlPRHeBypunY3smQ4K7kdnlGUPMpJL36Hc/TAT91hzMyW9grIaPTSYfd+FpaHuqhq7S0 WjqyikDCS8pcLcWkiDgvihYExx1lFJM5OHOD0BrEJKapFqWuPoPPdyOKd8ATtQxzT8z/ dWLlh/us8dqXspfvfBJUHn6VRoTYPQljookyUcwcTBnOQcgFlFLV1YTq8cOVFI8ot9pi YtvlmK3gcOirBzNpRsB+42g0A513v29CXk+sq70zWV6knCJSXfMi9LPDlkdOsm4uVmru wwfranDBPLl+ZLzCHsBU3kkdzQbwmb70l1I44Qg1XqJpU+yuLs+fJmzqHG3GiDdWGRrM 0w== Received: from userv0021.oracle.com (userv0021.oracle.com [156.151.31.71]) by userp2130.oracle.com with ESMTP id 2m2xht9mak-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Sun, 26 Aug 2018 02:40:11 +0000 Received: from aserv0122.oracle.com (aserv0122.oracle.com [141.146.126.236]) by userv0021.oracle.com (8.14.4/8.14.4) with ESMTP id w7Q2eArH031921 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Sun, 26 Aug 2018 02:40:10 GMT Received: from abhmp0008.oracle.com (abhmp0008.oracle.com [141.146.116.14]) by aserv0122.oracle.com (8.14.4/8.14.4) with ESMTP id w7Q2eAos012424; Sun, 26 Aug 2018 02:40:10 GMT Received: from ca-mkp.ca.oracle.com (/10.156.108.201) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Sat, 25 Aug 2018 19:40:10 -0700 From: "Martin K. Petersen" To: herbert@gondor.apana.org.au Cc: Jeff.Lien@wdc.com, ard.biesheuvel@linaro.org, david.darrington@wdc.com, hch@infradead.org, jeff.furlong@wdc.com, linux-block@vger.kernel.org, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, martin.petersen@oracle.com, tim.c.chen@linux.intel.com Subject: [PATCH 3/4] crc-t10dif: Allow current transform to be inspected in sysfs Date: Sat, 25 Aug 2018 22:40:05 -0400 Message-Id: <20180826024006.13800-3-martin.petersen@oracle.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20180826024006.13800-1-martin.petersen@oracle.com> References: <20180825061205.ygrjjazkooqghrqy@gondor.apana.org.au> <20180826024006.13800-1-martin.petersen@oracle.com> X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=8996 signatures=668707 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=1 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1807170000 definitions=main-1808260028 Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add a way to print the currently active CRC algorithm in: /sys/module/crc_t10dif/parameters/transform Signed-off-by: Martin K. Petersen --- lib/crc-t10dif.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/lib/crc-t10dif.c b/lib/crc-t10dif.c index 72076a902df5..21c9b35a656f 100644 --- a/lib/crc-t10dif.c +++ b/lib/crc-t10dif.c @@ -107,6 +107,17 @@ static void __exit crc_t10dif_mod_fini(void) module_init(crc_t10dif_mod_init); module_exit(crc_t10dif_mod_fini); +static int crc_t10dif_transform_show(char *buffer, const struct kernel_param *kp) +{ + if (static_key_false(&crct10dif_fallback)) + return sprintf(buffer, "fallback\n"); + + return sprintf(buffer, "%s\n", + crypto_tfm_alg_driver_name(crypto_shash_tfm(crct10dif_tfm))); +} + +module_param_call(transform, NULL, crc_t10dif_transform_show, NULL, 0644); + MODULE_DESCRIPTION("T10 DIF CRC calculation"); MODULE_LICENSE("GPL"); MODULE_SOFTDEP("pre: crct10dif");