From patchwork Thu Mar 18 09:42:25 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Konstantin Shelekhin X-Patchwork-Id: 404458 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=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 AB79BC4360C for ; Thu, 18 Mar 2021 09:47:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9234164F3B for ; Thu, 18 Mar 2021 09:47:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229889AbhCRJq4 (ORCPT ); Thu, 18 Mar 2021 05:46:56 -0400 Received: from mta-02.yadro.com ([89.207.88.252]:58588 "EHLO mta-01.yadro.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S229803AbhCRJqe (ORCPT ); Thu, 18 Mar 2021 05:46:34 -0400 Received: from localhost (unknown [127.0.0.1]) by mta-01.yadro.com (Postfix) with ESMTP id 64ED941308; Thu, 18 Mar 2021 09:46:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=yadro.com; h= content-type:content-type:content-transfer-encoding:mime-version :references:in-reply-to:x-mailer:message-id:date:date:subject :subject:from:from:received:received:received; s=mta-01; t= 1616060792; x=1617875193; bh=ZNsnz0/wcJq5weNHNyvGZBxkmsFXT8B0mc2 il32Ih2g=; b=l1vmvivKN3B6v1F9RawbfxLs74GNlyRiyxEf5+gHNuB+klA1zXU Wz3yNEgyDjBjrQBkC8SBKXcXUKGuKXYDVjpmn6q2zYXgZ1HkckxFscR398TDN6VF wEQaHrkEJ75ZGP36dmf8v9CAiBUw8/j9TlHduXTmK1C5lqHByTjx0l/g= X-Virus-Scanned: amavisd-new at yadro.com Received: from mta-01.yadro.com ([127.0.0.1]) by localhost (mta-01.yadro.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id oQmH3_t5P05k; Thu, 18 Mar 2021 12:46:32 +0300 (MSK) Received: from T-EXCH-03.corp.yadro.com (t-exch-03.corp.yadro.com [172.17.100.103]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by mta-01.yadro.com (Postfix) with ESMTPS id 9CAE941360; Thu, 18 Mar 2021 12:44:21 +0300 (MSK) Received: from yadro.com (10.199.0.137) by T-EXCH-03.corp.yadro.com (172.17.100.103) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P384) id 15.1.669.32; Thu, 18 Mar 2021 12:44:21 +0300 From: Konstantin Shelekhin To: Martin Petersen , Mike Christie , CC: , , Konstantin Shelekhin , Roman Bolshakov Subject: [PATCH 2/2] target: Make the virtual LUN 0 device dummy Date: Thu, 18 Mar 2021 12:42:25 +0300 Message-ID: <20210318094224.17524-3-k.shelekhin@yadro.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210318094224.17524-1-k.shelekhin@yadro.com> References: <20210318094224.17524-1-k.shelekhin@yadro.com> MIME-Version: 1.0 X-Originating-IP: [10.199.0.137] X-ClientProxiedBy: T-EXCH-01.corp.yadro.com (172.17.10.101) To T-EXCH-03.corp.yadro.com (172.17.100.103) Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Create the device for the virtual LUN 0 using the DUMMY flag. This change makes it possible to remove some special-casing in the INQUIRY code. Signed-off-by: Konstantin Shelekhin Reviewed-by: Roman Bolshakov --- drivers/target/target_core_device.c | 2 +- drivers/target/target_core_spc.c | 6 +----- 2 files changed, 2 insertions(+), 6 deletions(-) diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c index 7787c527aad3..2d50da7840fc 100644 --- a/drivers/target/target_core_device.c +++ b/drivers/target/target_core_device.c @@ -1029,7 +1029,7 @@ int core_dev_setup_virtual_lun0(void) { struct se_hba *hba; struct se_device *dev; - char buf[] = "rd_pages=8,rd_nullio=1"; + char buf[] = "rd_pages=8,rd_nullio=1,rd_dummy=1"; int ret; hba = core_alloc_hba("rd_mcp", 0, HBA_FLAGS_INTERNAL_USE); diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c index ca5579ebc81d..70a661801cb9 100644 --- a/drivers/target/target_core_spc.c +++ b/drivers/target/target_core_spc.c @@ -701,7 +701,6 @@ static sense_reason_t spc_emulate_inquiry(struct se_cmd *cmd) { struct se_device *dev = cmd->se_dev; - struct se_portal_group *tpg = cmd->se_lun->lun_tpg; unsigned char *rbuf; unsigned char *cdb = cmd->t_task_cdb; unsigned char *buf; @@ -715,10 +714,7 @@ spc_emulate_inquiry(struct se_cmd *cmd) return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; } - if (dev == rcu_access_pointer(tpg->tpg_virt_lun0->lun_se_dev)) - buf[0] = 0x3f; /* Not connected */ - else - buf[0] = dev->transport->get_device_type(dev); + buf[0] = dev->transport->get_device_type(dev); if (!(cdb[1] & 0x1)) { if (cdb[2]) {