linux-stable/include/scsi/scsi_devinfo.h
Martin Wilck c360652006 scsi: devinfo: BLIST_RETRY_ASC_C1 for Fujitsu ETERNUS
On Fujitsu ETERNUS systems, sense code ABORTED COMMAND with ASC/Q C1/01
is used to indicate temporary condition where the storage-internal path
to a target is switched from one controller to another. SCSI commands
that return with this error code must be retried unconditionally
(i.e. without the "maybe_retry" logic in scsi_decide_disposition);
otherwise dm-multipath might initiate a failover from a healthy path
e.g. for REQ_FAILFAST_DEV commands.

Introduce a new blist flag for this case.

[mkp: applied by hand]

Signed-off-by: Martin Wilck <mwilck@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-20 19:14:36 -04:00

85 lines
3.7 KiB
C

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _SCSI_SCSI_DEVINFO_H
#define _SCSI_SCSI_DEVINFO_H
/*
* Flags for SCSI devices that need special treatment
*/
/* Only scan LUN 0 */
#define BLIST_NOLUN ((__force blist_flags_t)(1ULL << 0))
/* Known to have LUNs, force scanning.
* DEPRECATED: Use max_luns=N */
#define BLIST_FORCELUN ((__force blist_flags_t)(1ULL << 1))
/* Flag for broken handshaking */
#define BLIST_BORKEN ((__force blist_flags_t)(1ULL << 2))
/* unlock by special command */
#define BLIST_KEY ((__force blist_flags_t)(1ULL << 3))
/* Do not use LUNs in parallel */
#define BLIST_SINGLELUN ((__force blist_flags_t)(1ULL << 4))
/* Buggy Tagged Command Queuing */
#define BLIST_NOTQ ((__force blist_flags_t)(1ULL << 5))
/* Non consecutive LUN numbering */
#define BLIST_SPARSELUN ((__force blist_flags_t)(1ULL << 6))
/* Avoid LUNS >= 5 */
#define BLIST_MAX5LUN ((__force blist_flags_t)(1ULL << 7))
/* Treat as (removable) CD-ROM */
#define BLIST_ISROM ((__force blist_flags_t)(1ULL << 8))
/* LUNs past 7 on a SCSI-2 device */
#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) */
#define BLIST_NOREPORTLUN ((__force blist_flags_t)(1ULL << 18))
/* don't use PREVENT-ALLOW commands */
#define BLIST_NOT_LOCKABLE ((__force blist_flags_t)(1ULL << 19))
/* device is actually for RAID config */
#define BLIST_NO_ULD_ATTACH ((__force blist_flags_t)(1ULL << 20))
/* select without ATN */
#define BLIST_SELECT_NO_ATN ((__force blist_flags_t)(1ULL << 21))
/* retry HARDWARE_ERROR */
#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 */
#define BLIST_NO_RSOC ((__force blist_flags_t)(1ULL << 29))
/* maximum 1024 sector cdb length */
#define BLIST_MAX_1024 ((__force blist_flags_t)(1ULL << 30))
/* Use UNMAP limit for WRITE SAME */
#define BLIST_UNMAP_LIMIT_WS ((__force blist_flags_t)(1ULL << 31))
/* Always retry ABORTED_COMMAND with Internal Target Failure */
#define BLIST_RETRY_ITF ((__force blist_flags_t)(1ULL << 32))
/* Always retry ABORTED_COMMAND with ASC 0xc1 */
#define BLIST_RETRY_ASC_C1 ((__force blist_flags_t)(1ULL << 33))
#define __BLIST_LAST_USED BLIST_RETRY_ASC_C1
#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