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Tue, 15 Nov 2022 21:28:29 +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 15.20.5813.017; Tue, 15 Nov 2022 21:28:29 +0000 From: Mike Christie To: 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 Subject: [PATCH v2 1/4] block: Add error codes for common PR failures Date: Tue, 15 Nov 2022 15:28:22 -0600 Message-Id: <20221115212825.7945-2-michael.christie@oracle.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221115212825.7945-1-michael.christie@oracle.com> References: <20221115212825.7945-1-michael.christie@oracle.com> X-ClientProxiedBy: CH2PR19CA0008.namprd19.prod.outlook.com (2603:10b6:610:4d::18) To DM5PR10MB1466.namprd10.prod.outlook.com (2603:10b6:3:b::7) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM5PR10MB1466:EE_|BN0PR10MB5368:EE_ X-MS-Office365-Filtering-Correlation-Id: c7903ba2-82ad-4c46-64b6-08dac75056bc 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 --- 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,