From patchwork Sat Jul 27 18:53:37 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Minwoo Im X-Patchwork-Id: 11062649 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 9C0AE13B1 for ; Sat, 27 Jul 2019 18:53:51 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A613C28A16 for ; Sat, 27 Jul 2019 18:53:51 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 98F3C28A19; Sat, 27 Jul 2019 18:53:51 +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,FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI 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 3CF2E28A19 for ; Sat, 27 Jul 2019 18:53:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388088AbfG0Sxq (ORCPT ); Sat, 27 Jul 2019 14:53:46 -0400 Received: from mail-pf1-f195.google.com ([209.85.210.195]:37160 "EHLO mail-pf1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387794AbfG0Sxp (ORCPT ); Sat, 27 Jul 2019 14:53:45 -0400 Received: by mail-pf1-f195.google.com with SMTP id 19so26020583pfa.4; Sat, 27 Jul 2019 11:53:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=y3DnasAilMtI3RHpffbNTgKJ99rymltM1iusWTe3er4=; b=Ix+I4uDUS+gstrellW1g3Ojk4+fwQ2/s3x9Iu03wCV2yR0JJ5oQDgFZOeqTuyGDrny EuiEnHsq8/vKBvSOmZFZNYgbsAj5t3Df70F9XY+1FyTQXCxi9ko9ktlCVNJql+pyiEfK aGaWBAkqEyp8t1mfUMmMnoBoATOQ3qzoWSC6i+oraTxhAFL/BbqkIlDwiNRb4+F/rWp7 /h4UK1pDWIa5HGI8yq51vQx1QV3PaHRUKNEwoRC6WaCOJxuTkBsQt1Gq6yYarZJsJ5we J8aiugN7hfvWBo9+a+LDXnyNur2GOzWOBj4QLKPe7ohqfhzvEWYm1k+bB/JQFtGXtA3r 4xTg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=y3DnasAilMtI3RHpffbNTgKJ99rymltM1iusWTe3er4=; b=E9tvL7LgYtG28qoqvFbpi+tlr9+FIHGpbeuZx9xZw9oASIFO9Le4Y7MyHUIbwiGcrb v4I/tJkbUMC7hkEHIwuewnMInsnG3N3/xVduBOyUegFldr3JG+hR7nGs+tuYNa8fy/GY 57fLt2nE6DryiULMlgdRcVVT75qRf9MSrwJz7XRh8tnpTB0OS76++gO0IGXr2b6bA+Fg TTonE4kNbDIB/WPziWxUa40DxBSA4GMnWJZ86a76h77ohyDtBDzG4/jDdbdMpcwmA+1u mgaVPP8GYUCsiIaJqtZs/3IjZJDZCgW7fwAaryS6t6AOiLrKRBqXJCT/xZ0xAbK9a7cH rs2w== X-Gm-Message-State: APjAAAWpjskDbYXKLo/DvALdB7l12IyuhwMnnM7FJKg7QFm/BOIrK20i miqxCelbrJdQ2HucjnoG1Von/3dVJN8= X-Google-Smtp-Source: APXvYqxYevqHhJ6dt1EzQWwOWP8c4KB8DdOUpnfAfnIMcQ6mqofCdtY7VyEV2Cy2pdWlVImmnMp1CQ== X-Received: by 2002:a62:2f06:: with SMTP id v6mr28749668pfv.195.1564253624486; Sat, 27 Jul 2019 11:53:44 -0700 (PDT) Received: from localhost.localdomain ([123.213.206.190]) by smtp.gmail.com with ESMTPSA id j10sm22023163pfn.188.2019.07.27.11.53.40 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Sat, 27 Jul 2019 11:53:43 -0700 (PDT) From: Minwoo Im To: linux-scsi@vger.kernel.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Euihyeok Kwon , Sarah Cho , Sanggwan Lee , Gyeongmin Nam , Sungjun Park , Minwoo Im , Sreekanth Reddy , Suganath Prabu Subramani , Sathya Prakash , "James E . J . Bottomley" , "Martin K . Petersen" , MPT-FusionLinux.pdl@broadcom.com, Minwoo Im Subject: [RESEND PATCH] mpt3sas: support target smid for [abort|query] task Date: Sun, 28 Jul 2019 03:53:37 +0900 Message-Id: <20190727185337.19299-1-minwoo.im.dev@gmail.com> X-Mailer: git-send-email 2.17.1 Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Minwoo Im From: Minwoo Im We can request task management IOCTL command(MPI2_FUNCTION_SCSI_TASK_MGMT) to /dev/mpt3ctl. If the given task_type is either abort task or query task, it may need a field named "Initiator Port Transfer Tag to Manage" in the IU. Current code does not support to check target IPTT tag from the tm_request. This patch introduces to check TaskMID given from the userspace as a target tag. We have a rule of relationship between (struct request *req->tag) and smid in mpt3sas_base.c: 3318 u16 3319 mpt3sas_base_get_smid_scsiio(struct MPT3SAS_ADAPTER *ioc, u8 cb_idx, 3320 struct scsi_cmnd *scmd) 3321 { 3322 struct scsiio_tracker *request = scsi_cmd_priv(scmd); 3323 unsigned int tag = scmd->request->tag; 3324 u16 smid; 3325 3326 smid = tag + 1; So if we want to abort a request tagged #X, then we can pass (X + 1) to this IOCTL handler. Otherwise, user space just can pass 0 TaskMID to abort the first outstanding smid which is legacy behaviour. Cc: Sreekanth Reddy Cc: Suganath Prabu Subramani Cc: Sathya Prakash Cc: James E.J. Bottomley Cc: Martin K. Petersen Cc: MPT-FusionLinux.pdl@broadcom.com Signed-off-by: Minwoo Im Acked-by: Sreekanth Reddy Signed-off-by: Minwoo Im --- drivers/scsi/mpt3sas/mpt3sas_ctl.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/mpt3sas/mpt3sas_ctl.c b/drivers/scsi/mpt3sas/mpt3sas_ctl.c index d4ecfbbe738c..a26c5516ea3e 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_ctl.c +++ b/drivers/scsi/mpt3sas/mpt3sas_ctl.c @@ -596,8 +596,16 @@ _ctl_set_task_mid(struct MPT3SAS_ADAPTER *ioc, struct mpt3_ioctl_command *karg, if (priv_data->sas_target->handle != handle) continue; st = scsi_cmd_priv(scmd); - tm_request->TaskMID = cpu_to_le16(st->smid); - found = 1; + + /* + * If the given TaskMID from the user space is zero, then the + * first outstanding smid will be picked up. Otherwise, + * targeted smid will be the one. + */ + if (!tm_request->TaskMID || tm_request->TaskMID == st->smid) { + tm_request->TaskMID = cpu_to_le16(st->smid); + found = 1; + } } if (!found) {