scsi: devinfo: warn on undefined blist flags

Warn if a device (or the user) sets blist flags which are unknown
or have been removed. This should enable us to reuse freed blist
bits in later releases.

Signed-off-by: Martin Wilck <mwilck@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/include/scsi/scsi_devinfo.h b/include/scsi/scsi_devinfo.h
index e206d299f137..3434e143feff 100644
--- a/include/scsi/scsi_devinfo.h
+++ b/include/scsi/scsi_devinfo.h
@@ -28,8 +28,13 @@
 #define BLIST_LARGELUN          ((__force blist_flags_t)(1ULL << 9))
 /* override additional length field */
 #define BLIST_INQUIRY_36        ((__force blist_flags_t)(1ULL << 10))
+#define __BLIST_UNUSED_11       ((__force blist_flags_t)(1ULL << 11))
 /* do not do automatic start on add */
 #define BLIST_NOSTARTONADD      ((__force blist_flags_t)(1ULL << 12))
+#define __BLIST_UNUSED_13       ((__force blist_flags_t)(1ULL << 13))
+#define __BLIST_UNUSED_14       ((__force blist_flags_t)(1ULL << 14))
+#define __BLIST_UNUSED_15       ((__force blist_flags_t)(1ULL << 15))
+#define __BLIST_UNUSED_16       ((__force blist_flags_t)(1ULL << 16))
 /* try REPORT_LUNS even for SCSI-2 devs (if HBA supports more than 8 LUNs) */
 #define BLIST_REPORTLUN2        ((__force blist_flags_t)(1ULL << 17))
 /* don't try REPORT_LUNS scan (SCSI-3 devs) */
@@ -44,10 +49,12 @@
 #define BLIST_RETRY_HWERROR     ((__force blist_flags_t)(1ULL << 22))
 /* maximum 512 sector cdb length */
 #define BLIST_MAX_512           ((__force blist_flags_t)(1ULL << 23))
+#define __BLIST_UNUSED_24       ((__force blist_flags_t)(1ULL << 24))
 /* Disable T10 PI (DIF) */
 #define BLIST_NO_DIF            ((__force blist_flags_t)(1ULL << 25))
 /* Ignore SBC-3 VPD pages */
 #define BLIST_SKIP_VPD_PAGES    ((__force blist_flags_t)(1ULL << 26))
+#define __BLIST_UNUSED_27       ((__force blist_flags_t)(1ULL << 27))
 /* Attempt to read VPD pages */
 #define BLIST_TRY_VPD_PAGES     ((__force blist_flags_t)(1ULL << 28))
 /* don't try to issue RSOC */
@@ -57,4 +64,18 @@
 /* Use UNMAP limit for WRITE SAME */
 #define BLIST_UNMAP_LIMIT_WS    ((__force blist_flags_t)(1ULL << 31))
 
+#define __BLIST_LAST_USED BLIST_UNMAP_LIMIT_WS
+
+#define __BLIST_HIGH_UNUSED (~(__BLIST_LAST_USED | \
+                               (__force blist_flags_t) \
+                               ((__force __u64)__BLIST_LAST_USED - 1ULL)))
+#define __BLIST_UNUSED_MASK (__BLIST_UNUSED_11 | \
+                             __BLIST_UNUSED_13 | \
+                             __BLIST_UNUSED_14 | \
+                             __BLIST_UNUSED_15 | \
+                             __BLIST_UNUSED_16 | \
+                             __BLIST_UNUSED_24 | \
+                             __BLIST_UNUSED_27 | \
+                             __BLIST_HIGH_UNUSED)
+
 #endif