From patchwork Mon Sep 21 18:23:05 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Christie X-Patchwork-Id: 257570 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-14.3 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, UNPARSEABLE_RELAY,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 440B5C4363C for ; Mon, 21 Sep 2020 18:23:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 075C722262 for ; Mon, 21 Sep 2020 18:23:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="uA3buD61" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727703AbgIUSXa (ORCPT ); Mon, 21 Sep 2020 14:23:30 -0400 Received: from userp2120.oracle.com ([156.151.31.85]:34620 "EHLO userp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726456AbgIUSXa (ORCPT ); Mon, 21 Sep 2020 14:23:30 -0400 Received: from pps.filterd (userp2120.oracle.com [127.0.0.1]) by userp2120.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 08LIIcSV125090; Mon, 21 Sep 2020 18:23:24 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : subject : date : message-id : in-reply-to : references; s=corp-2020-01-29; bh=7YEsIwYs+5asHjb1KTrl8WuFLSuK5Zyk1LbYC4vsiHA=; b=uA3buD61eDEaCHVtS7Nc9L6W9XMSW/gRn30P6T9FC1B9VeP/6J/eE5/5uXxwm+mpCQ5S EzBc03XPmzvcx8RCMCYfzg6X4aw3kYsGykIki6BLyFf9ODHGSyrkOXr/0TVnNUz/yzcB V/GQeLwM4nQqcSFZQYaOXU9Xy7caU61+JrgSnSXTO+BiJay5hUMU5Jn2PnY3C/r0ulNX 5ok/aiHOwBmRqFlsj/RxOuMfJXHw2UEz8s5S83IbviAs7NM+fb86+9LeFTDr3hRU8WZu PTQPMHzKJW+0DkcXMW9m0wUXHthw0houoB8nBPVTDiUzFkggF0G0XxihjbubgHdfioM2 MQ== Received: from userp3020.oracle.com (userp3020.oracle.com [156.151.31.79]) by userp2120.oracle.com with ESMTP id 33ndnu7k81-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 21 Sep 2020 18:23:24 +0000 Received: from pps.filterd (userp3020.oracle.com [127.0.0.1]) by userp3020.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 08LIKKcQ063432; Mon, 21 Sep 2020 18:23:24 GMT Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by userp3020.oracle.com with ESMTP id 33nurr97ac-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 21 Sep 2020 18:23:24 +0000 Received: from abhmp0018.oracle.com (abhmp0018.oracle.com [141.146.116.24]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id 08LINNgw013349; Mon, 21 Sep 2020 18:23:23 GMT Received: from ol2.localdomain (/73.88.28.6) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Mon, 21 Sep 2020 11:23:23 -0700 From: Mike Christie To: martin.petersen@oracle.com, linux-scsi@vger.kernel.org, target-devel@vger.kernel.org, mst@redhat.com, jasowang@redhat.com, pbonzini@redhat.com, stefanha@redhat.com, virtualization@lists.linux-foundation.org Subject: [PATCH 5/8] vhost scsi: add lun parser helper Date: Mon, 21 Sep 2020 13:23:05 -0500 Message-Id: <1600712588-9514-6-git-send-email-michael.christie@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1600712588-9514-1-git-send-email-michael.christie@oracle.com> References: <1600712588-9514-1-git-send-email-michael.christie@oracle.com> X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9751 signatures=668679 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 adultscore=0 malwarescore=0 phishscore=0 mlxlogscore=999 bulkscore=0 mlxscore=0 suspectscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2009210131 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9751 signatures=668679 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 lowpriorityscore=0 phishscore=0 adultscore=0 suspectscore=0 bulkscore=0 clxscore=1015 impostorscore=0 mlxlogscore=999 mlxscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2009210131 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Move code to parse lun from req's lun_buf to helper, so tmf code can use it in the next patch. Signed-off-by: Mike Christie Reviewed-by: Paolo Bonzini --- drivers/vhost/scsi.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c index 26d0f75..736ce19 100644 --- a/drivers/vhost/scsi.c +++ b/drivers/vhost/scsi.c @@ -899,6 +899,11 @@ static void vhost_scsi_submission_work(struct work_struct *work) return ret; } +static u16 vhost_buf_to_lun(u8 *lun_buf) +{ + return ((lun_buf[2] << 8) | lun_buf[3]) & 0x3FFF; +} + static void vhost_scsi_handle_vq(struct vhost_scsi *vs, struct vhost_virtqueue *vq) { @@ -1037,12 +1042,12 @@ static void vhost_scsi_submission_work(struct work_struct *work) tag = vhost64_to_cpu(vq, v_req_pi.tag); task_attr = v_req_pi.task_attr; cdb = &v_req_pi.cdb[0]; - lun = ((v_req_pi.lun[2] << 8) | v_req_pi.lun[3]) & 0x3FFF; + lun = vhost_buf_to_lun(v_req_pi.lun); } else { tag = vhost64_to_cpu(vq, v_req.tag); task_attr = v_req.task_attr; cdb = &v_req.cdb[0]; - lun = ((v_req.lun[2] << 8) | v_req.lun[3]) & 0x3FFF; + lun = vhost_buf_to_lun(v_req.lun); } /* * Check that the received CDB size does not exceeded our