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-rw-r--r--include/scsi/osd_initiator.h26
1 files changed, 25 insertions, 1 deletions
diff --git a/include/scsi/osd_initiator.h b/include/scsi/osd_initiator.h
index 3ec346e15dda..39d6d1097153 100644
--- a/include/scsi/osd_initiator.h
+++ b/include/scsi/osd_initiator.h
@@ -267,7 +267,7 @@ int osd_execute_request_async(struct osd_request *or,
* @bad_attr_list - List of failing attributes (optional)
* @max_attr - Size of @bad_attr_list.
*
- * After execution, sense + return code can be analyzed using this function. The
+ * After execution, osd_request results are analyzed using this function. The
* return code is the final disposition on the error. So it is possible that a
* CHECK_CONDITION was returned from target but this will return NO_ERROR, for
* example on recovered errors. All parameters are optional if caller does
@@ -276,7 +276,31 @@ int osd_execute_request_async(struct osd_request *or,
* of the SCSI_OSD_DPRINT_SENSE Kconfig value. Set @silent if you know the
* command would routinely fail, to not spam the dmsg file.
*/
+
+/**
+ * osd_err_priority - osd categorized return codes in ascending severity.
+ *
+ * The categories are borrowed from the pnfs_osd_errno enum.
+ * See comments for translated Linux codes returned by osd_req_decode_sense.
+ */
+enum osd_err_priority {
+ OSD_ERR_PRI_NO_ERROR = 0,
+ /* Recoverable, caller should clear_highpage() all pages */
+ OSD_ERR_PRI_CLEAR_PAGES = 1, /* -EFAULT */
+ OSD_ERR_PRI_RESOURCE = 2, /* -ENOMEM */
+ OSD_ERR_PRI_BAD_CRED = 3, /* -EINVAL */
+ OSD_ERR_PRI_NO_ACCESS = 4, /* -EACCES */
+ OSD_ERR_PRI_UNREACHABLE = 5, /* any other */
+ OSD_ERR_PRI_NOT_FOUND = 6, /* -ENOENT */
+ OSD_ERR_PRI_NO_SPACE = 7, /* -ENOSPC */
+ OSD_ERR_PRI_EIO = 8, /* -EIO */
+};
+
struct osd_sense_info {
+ u64 out_resid; /* Zero on success otherwise out residual */
+ u64 in_resid; /* Zero on success otherwise in residual */
+ enum osd_err_priority osd_err_pri;
+
int key; /* one of enum scsi_sense_keys */
int additional_code ; /* enum osd_additional_sense_codes */
union { /* Sense specific information */
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