From patchwork Tue Oct 4 11:27:07 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Garry X-Patchwork-Id: 612797 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1BAD2C433FE for ; Tue, 4 Oct 2022 10:56:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229764AbiJDK4t (ORCPT ); Tue, 4 Oct 2022 06:56:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39710 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229726AbiJDK4s (ORCPT ); Tue, 4 Oct 2022 06:56:48 -0400 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7050E53D16; Tue, 4 Oct 2022 03:56:47 -0700 (PDT) Received: from fraeml744-chm.china.huawei.com (unknown [172.18.147.207]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4MhZMc6yL5z689Hq; Tue, 4 Oct 2022 18:54:20 +0800 (CST) Received: from lhrpeml500003.china.huawei.com (7.191.162.67) by fraeml744-chm.china.huawei.com (10.206.15.225) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Tue, 4 Oct 2022 12:56:45 +0200 Received: from localhost.localdomain (10.69.192.58) by lhrpeml500003.china.huawei.com (7.191.162.67) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Tue, 4 Oct 2022 11:56:42 +0100 From: John Garry To: , , CC: , , , , , , , , John Garry Subject: [PATCH v3 1/7] scsi: libsas: Add sas_task_find_rq() Date: Tue, 4 Oct 2022 19:27:07 +0800 Message-ID: <1664882833-39804-2-git-send-email-john.garry@huawei.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1664882833-39804-1-git-send-email-john.garry@huawei.com> References: <1664882833-39804-1-git-send-email-john.garry@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.69.192.58] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To lhrpeml500003.china.huawei.com (7.191.162.67) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org blk-mq already provides a unique tag per request. Some libsas LLDDs - like hisi_sas - already use this tag as the unique per-IO HW tag. Add a common function to provide the request associated with a sas_task for all libsas LLDDs. Signed-off-by: John Garry Reviewed-by: Jack Wang Reviewed-by: Jason Yan Reviewed-by: Hannes Reinecke --- include/scsi/libsas.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h index f86b56bf7833..f498217961db 100644 --- a/include/scsi/libsas.h +++ b/include/scsi/libsas.h @@ -644,6 +644,24 @@ static inline bool sas_is_internal_abort(struct sas_task *task) return task->task_proto == SAS_PROTOCOL_INTERNAL_ABORT; } +static inline struct request *sas_task_find_rq(struct sas_task *task) +{ + struct scsi_cmnd *scmd; + + if (task->task_proto & SAS_PROTOCOL_STP_ALL) { + struct ata_queued_cmd *qc = task->uldd_task; + + scmd = qc ? qc->scsicmd : NULL; + } else { + scmd = task->uldd_task; + } + + if (!scmd) + return NULL; + + return scsi_cmd_to_rq(scmd); +} + struct sas_domain_function_template { /* The class calls these to notify the LLDD of an event. */ void (*lldd_port_formed)(struct asd_sas_phy *);