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Tue, 22 Nov 2022 03:26:07 +0000 Received: from DM5PR10MB1466.namprd10.prod.outlook.com ([fe80::19f7:e081:85b4:c5df]) by DM5PR10MB1466.namprd10.prod.outlook.com ([fe80::19f7:e081:85b4:c5df%7]) with mapi id 15.20.5834.015; Tue, 22 Nov 2022 03:26:07 +0000 From: Mike Christie To: chaitanyak@nvidia.com, kbusch@kernel.org, axboe@fb.com, hch@lst.de, sagi@grimberg.me, martin.petersen@oracle.com, jejb@linux.ibm.com, linux-scsi@vger.kernel.org, linux-nvme@lists.infradead.org, linux-block@vger.kernel.org Cc: Mike Christie , Chaitanya Kulkarni Subject: [PATCH v3 1/4] block: Add error codes for common PR failures Date: Mon, 21 Nov 2022 21:26:00 -0600 Message-Id: <20221122032603.32766-2-michael.christie@oracle.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221122032603.32766-1-michael.christie@oracle.com> References: <20221122032603.32766-1-michael.christie@oracle.com> X-ClientProxiedBy: CH2PR12CA0001.namprd12.prod.outlook.com (2603:10b6:610:57::11) To DM5PR10MB1466.namprd10.prod.outlook.com (2603:10b6:3:b::7) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM5PR10MB1466:EE_|PH7PR10MB6130:EE_ X-MS-Office365-Filtering-Correlation-Id: 1ac1a4d9-6239-4fae-a908-08dacc394b51 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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This patch adds a new pr_status enum so drivers can convert errors to a common type which can be handled by the caller. Signed-off-by: Mike Christie Reviewed-by: Christoph Hellwig Reviewed-by: Chaitanya Kulkarni --- include/uapi/linux/pr.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/include/uapi/linux/pr.h b/include/uapi/linux/pr.h index ccc78cbf1221..d8126415966f 100644 --- a/include/uapi/linux/pr.h +++ b/include/uapi/linux/pr.h @@ -4,6 +4,23 @@ #include +enum pr_status { + PR_STS_SUCCESS = 0x0, + /* + * The following error codes are based on SCSI, because the interface + * was originally created for it and has existing users. + */ + /* Generic device failure. */ + PR_STS_IOERR = 0x2, + PR_STS_RESERVATION_CONFLICT = 0x18, + /* Temporary path failure that can be retried. */ + PR_STS_RETRY_PATH_FAILURE = 0xe0000, + /* The request was failed due to a fast failure timer. */ + PR_STS_PATH_FAST_FAILED = 0xf0000, + /* The path cannot be reached and has been marked as failed. */ + PR_STS_PATH_FAILED = 0x10000, +}; + enum pr_type { PR_WRITE_EXCLUSIVE = 1, PR_EXCLUSIVE_ACCESS = 2, From patchwork Tue Nov 22 03:26:01 2022 Content-Type: text/plain; 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Tue, 22 Nov 2022 03:26:09 +0000 Received: from DM5PR10MB1466.namprd10.prod.outlook.com ([fe80::19f7:e081:85b4:c5df]) by DM5PR10MB1466.namprd10.prod.outlook.com ([fe80::19f7:e081:85b4:c5df%7]) with mapi id 15.20.5834.015; Tue, 22 Nov 2022 03:26:09 +0000 From: Mike Christie To: chaitanyak@nvidia.com, kbusch@kernel.org, axboe@fb.com, hch@lst.de, sagi@grimberg.me, martin.petersen@oracle.com, jejb@linux.ibm.com, linux-scsi@vger.kernel.org, linux-nvme@lists.infradead.org, linux-block@vger.kernel.org Cc: Mike Christie , Chaitanya Kulkarni Subject: [PATCH v3 2/4] scsi: Rename status_byte to sg_status_byte Date: Mon, 21 Nov 2022 21:26:01 -0600 Message-Id: <20221122032603.32766-3-michael.christie@oracle.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221122032603.32766-1-michael.christie@oracle.com> References: <20221122032603.32766-1-michael.christie@oracle.com> X-ClientProxiedBy: CH2PR12CA0030.namprd12.prod.outlook.com (2603:10b6:610:57::40) To DM5PR10MB1466.namprd10.prod.outlook.com (2603:10b6:3:b::7) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM5PR10MB1466:EE_|PH7PR10MB6130:EE_ X-MS-Office365-Filtering-Correlation-Id: f3973db9-4e83-4fa7-d5c3-08dacc394c25 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Signed-off-by: Mike Christie Reviewed-by: Chaitanya Kulkarni Reviewed-by: Christoph Hellwig --- drivers/scsi/scsi_ioctl.c | 2 +- drivers/scsi/sg.c | 2 +- include/scsi/sg.h | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/scsi/scsi_ioctl.c b/drivers/scsi/scsi_ioctl.c index 2d20da55fb64..8baff7edf7c3 100644 --- a/drivers/scsi/scsi_ioctl.c +++ b/drivers/scsi/scsi_ioctl.c @@ -376,7 +376,7 @@ static int scsi_complete_sghdr_rq(struct request *rq, struct sg_io_hdr *hdr, * fill in all the output members */ hdr->status = scmd->result & 0xff; - hdr->masked_status = status_byte(scmd->result); + hdr->masked_status = sg_status_byte(scmd->result); hdr->msg_status = COMMAND_COMPLETE; hdr->host_status = host_byte(scmd->result); hdr->driver_status = 0; diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c index ce34a8ad53b4..d61d8d0d1658 100644 --- a/drivers/scsi/sg.c +++ b/drivers/scsi/sg.c @@ -1349,7 +1349,7 @@ sg_rq_end_io(struct request *rq, blk_status_t status) struct scsi_sense_hdr sshdr; srp->header.status = 0xff & result; - srp->header.masked_status = status_byte(result); + srp->header.masked_status = sg_status_byte(result); srp->header.msg_status = COMMAND_COMPLETE; srp->header.host_status = host_byte(result); srp->header.driver_status = driver_byte(result); diff --git a/include/scsi/sg.h b/include/scsi/sg.h index 068e35d36557..af31cecd9012 100644 --- a/include/scsi/sg.h +++ b/include/scsi/sg.h @@ -159,7 +159,7 @@ struct compat_sg_io_hdr { #define TASK_ABORTED 0x20 /* Obsolete status_byte() declaration */ -#define status_byte(result) (((result) >> 1) & 0x7f) +#define sg_status_byte(result) (((result) >> 1) & 0x7f) typedef struct sg_scsi_id { /* used by SG_GET_SCSI_ID ioctl() */ int host_no; /* as in "scsi" where 'n' is one of 0, 1, 2 etc */ From patchwork Tue Nov 22 03:26:02 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Christie X-Patchwork-Id: 628201 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 EF6F0C43217 for ; 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Tue, 22 Nov 2022 03:26:10 +0000 From: Mike Christie To: chaitanyak@nvidia.com, kbusch@kernel.org, axboe@fb.com, hch@lst.de, sagi@grimberg.me, martin.petersen@oracle.com, jejb@linux.ibm.com, linux-scsi@vger.kernel.org, linux-nvme@lists.infradead.org, linux-block@vger.kernel.org Cc: Mike Christie , Chaitanya Kulkarni Subject: [PATCH v3 3/4] scsi: Convert SCSI errors to PR errors Date: Mon, 21 Nov 2022 21:26:02 -0600 Message-Id: <20221122032603.32766-4-michael.christie@oracle.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221122032603.32766-1-michael.christie@oracle.com> References: <20221122032603.32766-1-michael.christie@oracle.com> X-ClientProxiedBy: CH2PR12CA0019.namprd12.prod.outlook.com (2603:10b6:610:57::29) To DM5PR10MB1466.namprd10.prod.outlook.com (2603:10b6:3:b::7) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM5PR10MB1466:EE_|PH7PR10MB6130:EE_ X-MS-Office365-Filtering-Correlation-Id: d7f3150f-b831-4df9-d985-08dacc394d11 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Signed-off-by: Mike Christie Reviewed-by: Christoph Hellwig Reviewed-by: Chaitanya Kulkarni --- drivers/scsi/sd.c | 35 ++++++++++++++++++++++++++++++++++- include/scsi/scsi.h | 1 + 2 files changed, 35 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index eb76ba055021..bc60ec91dc8f 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -1701,6 +1701,36 @@ static char sd_pr_type(enum pr_type type) } }; +static int sd_scsi_to_pr_err(struct scsi_sense_hdr *sshdr, int result) +{ + switch (host_byte(result)) { + case DID_TRANSPORT_MARGINAL: + case DID_TRANSPORT_DISRUPTED: + case DID_BUS_BUSY: + return PR_STS_RETRY_PATH_FAILURE; + case DID_NO_CONNECT: + return PR_STS_PATH_FAILED; + case DID_TRANSPORT_FAILFAST: + return PR_STS_PATH_FAST_FAILED; + } + + switch (status_byte(result)) { + case SAM_STAT_RESERVATION_CONFLICT: + return PR_STS_RESERVATION_CONFLICT; + case SAM_STAT_CHECK_CONDITION: + if (!scsi_sense_valid(sshdr)) + return PR_STS_IOERR; + + if (sshdr->sense_key == ILLEGAL_REQUEST && + (sshdr->asc == 0x26 || sshdr->asc == 0x24)) + return -EINVAL; + + fallthrough; + default: + return PR_STS_IOERR; + } +} + static int sd_pr_command(struct block_device *bdev, u8 sa, u64 key, u64 sa_key, u8 type, u8 flags) { @@ -1729,7 +1759,10 @@ static int sd_pr_command(struct block_device *bdev, u8 sa, scsi_print_sense_hdr(sdev, NULL, &sshdr); } - return result; + if (result <= 0) + return result; + + return sd_scsi_to_pr_err(&sshdr, result); } static int sd_pr_register(struct block_device *bdev, u64 old_key, u64 new_key, diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h index 3e46859774c8..ec093594ba53 100644 --- a/include/scsi/scsi.h +++ b/include/scsi/scsi.h @@ -121,6 +121,7 @@ enum scsi_disposition { * msg_byte (unused) * host_byte = set by low-level driver to indicate status. */ +#define status_byte(result) (result & 0xff) #define host_byte(result) (((result) >> 16) & 0xff) #define sense_class(sense) (((sense) >> 4) & 0x7) From patchwork Tue Nov 22 03:26:03 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Christie X-Patchwork-Id: 628202 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 F420AC4332F for ; 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Tue, 22 Nov 2022 03:26:12 +0000 From: Mike Christie To: chaitanyak@nvidia.com, kbusch@kernel.org, axboe@fb.com, hch@lst.de, sagi@grimberg.me, martin.petersen@oracle.com, jejb@linux.ibm.com, linux-scsi@vger.kernel.org, linux-nvme@lists.infradead.org, linux-block@vger.kernel.org Cc: Mike Christie , Chaitanya Kulkarni Subject: [PATCH v3 4/4] nvme: Convert NVMe errors to PR errors Date: Mon, 21 Nov 2022 21:26:03 -0600 Message-Id: <20221122032603.32766-5-michael.christie@oracle.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221122032603.32766-1-michael.christie@oracle.com> References: <20221122032603.32766-1-michael.christie@oracle.com> X-ClientProxiedBy: CH0PR13CA0036.namprd13.prod.outlook.com (2603:10b6:610:b2::11) To DM5PR10MB1466.namprd10.prod.outlook.com (2603:10b6:3:b::7) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM5PR10MB1466:EE_|PH7PR10MB6130:EE_ X-MS-Office365-Filtering-Correlation-Id: 3e7cda1c-c8de-401e-f1bf-08dacc394df1 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Signed-off-by: Mike Christie Reviewed-by: Chaitanya Kulkarni Reviewed-by: Christoph Hellwig --- drivers/nvme/host/core.c | 33 +++++++++++++++++++++++++++++++-- 1 file changed, 31 insertions(+), 2 deletions(-) diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index da55ce45ac70..6cd66f6d5e9b 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -2103,11 +2103,34 @@ static int nvme_send_ns_pr_command(struct nvme_ns *ns, struct nvme_command *c, return nvme_submit_sync_cmd(ns->queue, c, data, 16); } +static int nvme_sc_to_pr_err(int nvme_sc) +{ + if (nvme_is_path_error(nvme_sc)) + return PR_STS_PATH_FAILED; + + switch (nvme_sc) { + case NVME_SC_SUCCESS: + return PR_STS_SUCCESS; + case NVME_SC_RESERVATION_CONFLICT: + return PR_STS_RESERVATION_CONFLICT; + case NVME_SC_ONCS_NOT_SUPPORTED: + return -EOPNOTSUPP; + case NVME_SC_BAD_ATTRIBUTES: + case NVME_SC_INVALID_OPCODE: + case NVME_SC_INVALID_FIELD: + case NVME_SC_INVALID_NS: + return -EINVAL; + default: + return PR_STS_IOERR; + } +} + static int nvme_pr_command(struct block_device *bdev, u32 cdw10, u64 key, u64 sa_key, u8 op) { struct nvme_command c = { }; u8 data[16] = { 0, }; + int ret; put_unaligned_le64(key, &data[0]); put_unaligned_le64(sa_key, &data[8]); @@ -2117,8 +2140,14 @@ static int nvme_pr_command(struct block_device *bdev, u32 cdw10, if (IS_ENABLED(CONFIG_NVME_MULTIPATH) && bdev->bd_disk->fops == &nvme_ns_head_ops) - return nvme_send_ns_head_pr_command(bdev, &c, data); - return nvme_send_ns_pr_command(bdev->bd_disk->private_data, &c, data); + ret = nvme_send_ns_head_pr_command(bdev, &c, data); + else + ret = nvme_send_ns_pr_command(bdev->bd_disk->private_data, &c, + data); + if (ret < 0) + return ret; + + return nvme_sc_to_pr_err(ret); } static int nvme_pr_register(struct block_device *bdev, u64 old,