The result field of struct vscsiif_response is lacking a detailed
definition. Today the Linux kernel internal scsi definitions are being
used, which is not a sane interface for a PV device driver.
Add macros to change that by using today's values in the XEN namespace.
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
---
xen/include/public/io/vscsiif.h | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/xen/include/public/io/vscsiif.h b/xen/include/public/io/vscsiif.h
index c9ceb1884d..17a9033b43 100644
--- a/xen/include/public/io/vscsiif.h
+++ b/xen/include/public/io/vscsiif.h
@@ -315,6 +315,33 @@ struct vscsiif_response {
};
typedef struct vscsiif_response vscsiif_response_t;
+/* SCSI I/O status from vscsiif_response->rslt */
+#define XEN_VSCSIIF_RSLT_STATUS(x) (x & 0x00ff)
+
+/* Host I/O status from vscsiif_response->rslt */
+#define XEN_VSCSIIF_RSLT_HOST(x) ((unsigned)x >> 16)
+#define XEN_VSCSIIF_RSLT_HOST_OK 0
+#define XEN_VSCSIIF_RSLT_HOST_NO_CONN 1 /* Couldn't connect before timeout
*/
+#define XEN_VSCSIIF_RSLT_HOST_BUS_BUSY 2 /* BUS busy through timeout */
+#define XEN_VSCSIIF_RSLT_HOST_TIME_OUT 3 /* TIMED OUT for other reason */
+#define XEN_VSCSIIF_RSLT_HOST_BAD_TARG 4 /* BAD target */
+#define XEN_VSCSIIF_RSLT_HOST_ABORT 5 /* Abort for some other reason */
+#define XEN_VSCSIIF_RSLT_HOST_PARITY 6 /* Parity error */
+#define XEN_VSCSIIF_RSLT_HOST_ERROR 7 /* Internal error */
+#define XEN_VSCSIIF_RSLT_HOST_RESET 8 /* Reset by somebody */
+#define XEN_VSCSIIF_RSLT_HOST_BAD_INTR 9 /* Unexpected interrupt */
+#define XEN_VSCSIIF_RSLT_HOST_PASSTHR 10 /* Force command past mid-layer */
+#define XEN_VSCSIIF_RSLT_HOST_SOFT_ERR 11 /* Retry requested */
+#define XEN_VSCSIIF_RSLT_HOST_IMM_RETR 12 /* Hidden retry requested */
+#define XEN_VSCSIIF_RSLT_HOST_REQUEUE 13 /* Requeue command requested */
+#define XEN_VSCSIIF_RSLT_HOST_DISRUPT 14 /* Transport error disrupted I/O */
+#define XEN_VSCSIIF_RSLT_HOST_FAILFAST 15 /* Transport class fastfailed */
+#define XEN_VSCSIIF_RSLT_HOST_TARG_FAIL 16 /* Permanent target failure */
+#define XEN_VSCSIIF_RSLT_HOST_NEX_FAIL 17 /* Permanent nexus failure on path
*/
+#define XEN_VSCSIIF_RSLT_HOST_NOMEM 18 /* Space allocation failed */
+#define XEN_VSCSIIF_RSLT_HOST_MED_ERR 19 /* Medium error */
+#define XEN_VSCSIIF_RSLT_HOST_MARGINAL 20 /* Transport marginal errors */
+
DEFINE_RING_TYPES(vscsiif, struct vscsiif_request, struct vscsiif_response);
