From patchwork Thu Nov 1 21:58:33 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joseph Salisbury X-Patchwork-Id: 992098 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=lists.ubuntu.com (client-ip=91.189.94.19; helo=huckleberry.canonical.com; envelope-from=kernel-team-bounces@lists.ubuntu.com; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=canonical.com Received: from huckleberry.canonical.com (huckleberry.canonical.com [91.189.94.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 42mJxj2WRMzB4b3; Fri, 2 Nov 2018 08:58:49 +1100 (AEDT) Received: from localhost ([127.0.0.1] helo=huckleberry.canonical.com) by huckleberry.canonical.com with esmtp (Exim 4.86_2) (envelope-from ) id 1gIKzD-0003j6-B8; Thu, 01 Nov 2018 21:58:43 +0000 Received: from youngberry.canonical.com ([91.189.89.112]) by huckleberry.canonical.com with esmtps (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:128) (Exim 4.86_2) (envelope-from ) id 1gIKz8-0003gE-7F for kernel-team@lists.ubuntu.com; Thu, 01 Nov 2018 21:58:38 +0000 Received: from 1.general.jsalisbury.us.vpn ([10.172.67.212] helo=salisbury) by youngberry.canonical.com with esmtpsa (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.76) (envelope-from ) id 1gIKz7-0000Lc-Q6 for kernel-team@lists.ubuntu.com; Thu, 01 Nov 2018 21:58:38 +0000 Received: by salisbury (Postfix, from userid 1000) id 92CD67E4E85; Thu, 1 Nov 2018 17:58:36 -0400 (EDT) From: Joseph Salisbury To: kernel-team@lists.ubuntu.com Subject: [SRU][Cosmic][PATCH 2/5] scsi: smartpqi: improve error checking for sync requests Date: Thu, 1 Nov 2018 17:58:33 -0400 Message-Id: <3847986d16322dcda0469e8e6de56f48adc842ad.1541108032.git.joseph.salisbury@canonical.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: X-BeenThere: kernel-team@lists.ubuntu.com X-Mailman-Version: 2.1.20 Precedence: list List-Id: Kernel team discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: kernel-team-bounces@lists.ubuntu.com Sender: "kernel-team" From: Kevin Barnett BugLink: https://bugs.launchpad.net/bugs/1798208 Detect rare error cases for synchronous requests down the RAID path. Also retry INQUIRY of VPD page 0 sent to an HBA drive if the command failed due to an abort. Reviewed-by: Scott Benesh Reviewed-by: Scott Teel Signed-off-by: Kevin Barnett Signed-off-by: Don Brace Signed-off-by: Martin K. Petersen (cherry picked from commit 26b390aba2a8f7b9dd5ce4e3ada9431de327da6d) Signed-off-by: Joseph Salisbury --- drivers/scsi/smartpqi/smartpqi.h | 2 ++ drivers/scsi/smartpqi/smartpqi_init.c | 54 ++++++++++++++++++++++++----------- 2 files changed, 40 insertions(+), 16 deletions(-) diff --git a/drivers/scsi/smartpqi/smartpqi.h b/drivers/scsi/smartpqi/smartpqi.h index dc3a054..a8e7c4d 100644 --- a/drivers/scsi/smartpqi/smartpqi.h +++ b/drivers/scsi/smartpqi/smartpqi.h @@ -483,6 +483,8 @@ struct pqi_raid_error_info { #define CISS_CMD_STATUS_TMF 0xd #define CISS_CMD_STATUS_AIO_DISABLED 0xe +#define PQI_CMD_STATUS_ABORTED CISS_CMD_STATUS_ABORTED + #define PQI_NUM_EVENT_QUEUE_ELEMENTS 32 #define PQI_EVENT_OQ_ELEMENT_LENGTH sizeof(struct pqi_event_response) diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c index 4036f65..1593ee3 100644 --- a/drivers/scsi/smartpqi/smartpqi_init.c +++ b/drivers/scsi/smartpqi/smartpqi_init.c @@ -1197,20 +1197,30 @@ static void pqi_get_volume_status(struct pqi_ctrl_info *ctrl_info, device->volume_offline = volume_offline; } +#define PQI_INQUIRY_PAGE0_RETRIES 3 + static int pqi_get_device_info(struct pqi_ctrl_info *ctrl_info, struct pqi_scsi_dev *device) { int rc; u8 *buffer; + unsigned int retries; buffer = kmalloc(64, GFP_KERNEL); if (!buffer) return -ENOMEM; /* Send an inquiry to the device to see what it is. */ - rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr, 0, buffer, 64); - if (rc) - goto out; + for (retries = 0;;) { + rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr, 0, + buffer, 64); + if (rc == 0) + break; + if (pqi_is_logical_device(device) || + rc != PQI_CMD_STATUS_ABORTED || + ++retries > PQI_INQUIRY_PAGE0_RETRIES) + goto out; + } scsi_sanitize_inquiry_string(&buffer[8], 8); scsi_sanitize_inquiry_string(&buffer[16], 16); @@ -3621,6 +3631,29 @@ static void pqi_raid_synchronous_complete(struct pqi_io_request *io_request, complete(waiting); } +static int pqi_process_raid_io_error_synchronous(struct pqi_raid_error_info + *error_info) +{ + int rc = -EIO; + + switch (error_info->data_out_result) { + case PQI_DATA_IN_OUT_GOOD: + if (error_info->status == SAM_STAT_GOOD) + rc = 0; + break; + case PQI_DATA_IN_OUT_UNDERFLOW: + if (error_info->status == SAM_STAT_GOOD || + error_info->status == SAM_STAT_CHECK_CONDITION) + rc = 0; + break; + case PQI_DATA_IN_OUT_ABORTED: + rc = PQI_CMD_STATUS_ABORTED; + break; + } + + return rc; +} + static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info, struct pqi_iu_header *request, unsigned int flags, struct pqi_raid_error_info *error_info, unsigned long timeout_msecs) @@ -3710,19 +3743,8 @@ static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info, else memset(error_info, 0, sizeof(*error_info)); } else if (rc == 0 && io_request->error_info) { - u8 scsi_status; - struct pqi_raid_error_info *raid_error_info; - - raid_error_info = io_request->error_info; - scsi_status = raid_error_info->status; - - if (scsi_status == SAM_STAT_CHECK_CONDITION && - raid_error_info->data_out_result == - PQI_DATA_IN_OUT_UNDERFLOW) - scsi_status = SAM_STAT_GOOD; - - if (scsi_status != SAM_STAT_GOOD) - rc = -EIO; + rc = pqi_process_raid_io_error_synchronous( + io_request->error_info); } pqi_free_io_request(io_request);