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 */