kernel_optimize_test/drivers/s390/scsi
Steffen Maier 674595d851 scsi: zfcp: decouple our scsi_eh callbacks from scsi_cmnd
Note: zfcp_scsi_eh_host_reset_handler() will be converted in a later patch.

zfcp_scsi_eh_device_reset_handler() now only depends on scsi_device.
zfcp_scsi_eh_target_reset_handler() now only depends on scsi_target.
All derive other objects from these intended callback arguments.

zfcp_scsi_eh_target_reset_handler() is special: The FCP channel requires a
valid LUN handle so we try to find ourselves a stand-in scsi_device as
suggested by Hannes Reinecke. If it cannot find a stand-in scsi device,
trace a record like the following (formatted with zfcpdbf from s390-tools):

Timestamp      : ...
Area           : SCSI
Subarea        : 00
Level          : 1
Exception      : -
CPU ID         : ..
Caller         : 0x...
Record ID      : 1
Tag            : tr_nosd        target reset, no SCSI device
Request ID     : 0x0000000000000000                     none (invalid)
SCSI ID        : 0x00000000     SCSI ID/target denoting scope
SCSI LUN       : 0xffffffff                             none (invalid)
SCSI LUN high  : 0xffffffff                             none (invalid)
SCSI result    : 0x00002003     field re-used for midlayer value: FAILED
SCSI retries   : 0xff                                   none (invalid)
SCSI allowed   : 0xff                                   none (invalid)
SCSI scribble  : 0xffffffffffffffff                     none (invalid)
SCSI opcode    : ffffffff ffffffff ffffffff ffffffff    none (invalid)
FCP rsp inf cod: 0xff                                   none (invalid)
FCP rsp IU     : 00000000 00000000 00000000 00000000    none (invalid)
                 00000000 00000000

Actually change the signature of zfcp_task_mgmt_function() used by
zfcp_scsi_eh_device_reset_handler() & zfcp_scsi_eh_target_reset_handler().
Since it was prepared in a previous patch, we only need to delete a local
auto variable which is now the intended argument.

Suggested-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Steffen Maier <maier@linux.ibm.com>
Reviewed-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-05-18 11:22:11 -04:00
..
Makefile s390: add a few more SPDX identifiers 2017-12-05 07:51:09 +01:00
zfcp_aux.c s390: scsi: zfcp_aux: add SPDX identifier 2017-11-24 14:28:44 +01:00
zfcp_ccw.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
zfcp_dbf.c scsi: zfcp: decouple SCSI traces for scsi_eh / TMF from scsi_cmnd 2018-05-18 11:22:11 -04:00
zfcp_dbf.h scsi: zfcp: decouple SCSI traces for scsi_eh / TMF from scsi_cmnd 2018-05-18 11:22:11 -04:00
zfcp_def.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
zfcp_erp.c scsi: zfcp: fix missing REC trigger trace on enqueue without ERP thread 2018-05-18 11:22:11 -04:00
zfcp_ext.h scsi: zfcp: decouple SCSI setup of TMF from scsi_cmnd 2018-05-18 11:22:11 -04:00
zfcp_fc.c bsg-lib: introduce a timeout field in struct bsg_job 2018-03-13 11:40:21 -06:00
zfcp_fc.h scsi: zfcp: split FCP_CMND IU setup between SCSI I/O and TMF again 2018-05-18 11:22:11 -04:00
zfcp_fsf.c scsi: zfcp: decouple SCSI setup of TMF from scsi_cmnd 2018-05-18 11:22:11 -04:00
zfcp_fsf.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
zfcp_qdio.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
zfcp_qdio.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
zfcp_reqlist.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
zfcp_scsi.c scsi: zfcp: decouple our scsi_eh callbacks from scsi_cmnd 2018-05-18 11:22:11 -04:00
zfcp_sysfs.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
zfcp_unit.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00