linux/drivers/target
Anastasia Kovaleva cc0b6ad72e scsi: target: core: Signal WRITE residuals
According to RFC 7143 11.4.5.2.:

  If SPDTL > EDTL for a task, iSCSI Overflow MUST be signaled in the SCSI
  Response PDU as specified in Section 11.4.5.1.  The Residual Count MUST
  be set to the numerical value of (SPDTL - EDTL).

  If SPDTL < EDTL for a task, iSCSI Underflow MUST be signaled in the SCSI
  Response PDU as specified in Section 11.4.5.1.  The Residual Count MUST
  be set to the numerical value of (EDTL - SPDTL).

libiscsi has residual write tests that check residual kind and residual
amount and all of them (Write10Residuals, Write12Residuals,
Write16Residuals) currently fail.

One of the reasons why they fail is because target completes write commands
with INVALID FIELD IN CDB before setting the Overflow/Underflow bit and
residual amount.

Set the Overflow/Underflow bit and the residual amount before failing a
write to comply with RFC 7143.

Link: https://lore.kernel.org/r/20201203082035.54566-3-a.kovaleva@yadro.com
Signed-off-by: Anastasia Kovaleva <a.kovaleva@yadro.com>
Signed-off-by: Roman Bolshakov <r.bolshakov@yadro.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-26 23:12:18 -05:00
..
iscsi Merge branch '5.11/scsi-fixes' into 5.12/scsi-queue 2021-01-26 21:52:58 -05:00
loopback scsi: tcm_loop: Allow queues, can_queue and cmd_per_lun to be settable 2020-11-04 22:39:38 -05:00
sbp treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
tcm_fc scsi: target: Make state_list per CPU 2020-11-04 22:39:38 -05:00
Kconfig
Makefile
target_core_alua.c scsi: target: alua: Remove in_interrupt() usage in core_alua_check_nonop_delay() 2021-01-22 20:25:25 -05:00
target_core_alua.h
target_core_configfs.c scsi: target: tcmu: Make pgr_support and alua_support attributes writable 2020-05-07 22:39:22 -04:00
target_core_device.c scsi: target: Make state_list per CPU 2020-11-04 22:39:38 -05:00
target_core_fabric_configfs.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
target_core_fabric_lib.c scsi: target: Handle short iSIDs 2020-07-08 00:14:34 -04:00
target_core_file.c scsi: target: file: Don't zero iter before iov_iter_bvec 2021-01-13 00:09:16 -05:00
target_core_file.h
target_core_hba.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
target_core_iblock.c scsi: target: core: Fix fall-through warnings for Clang 2020-12-02 12:59:47 -05:00
target_core_iblock.h
target_core_internal.h scsi: target: Fix xcopy sess release leak 2020-07-08 00:14:34 -04:00
target_core_pr.c scsi: target: core: Fix fall-through warnings for Clang 2020-12-02 12:59:47 -05:00
target_core_pr.h
target_core_pscsi.c block: remove the nr_sects field in struct hd_struct 2020-12-01 14:53:40 -07:00
target_core_pscsi.h
target_core_rd.c scsi: target: rd: Drop double zeroing 2020-10-07 23:50:03 -04:00
target_core_rd.h
target_core_sbc.c scsi: target: Return COMPARE AND WRITE miscompare offsets 2020-11-04 22:02:43 -05:00
target_core_spc.c scsi: target: use an enum to track emulate_ua_intlck_ctrl 2020-02-21 17:37:16 -05:00
target_core_stat.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
target_core_tmr.c scsi: target: Make state_list per CPU 2020-11-04 22:39:38 -05:00
target_core_tpg.c scsi: target: Drop sess_cmd_lock from I/O path 2020-11-04 22:39:37 -05:00
target_core_transport.c scsi: target: core: Signal WRITE residuals 2021-01-26 23:12:18 -05:00
target_core_ua.c scsi: target: use an enum to track emulate_ua_intlck_ctrl 2020-02-21 17:37:16 -05:00
target_core_ua.h
target_core_user.c scsi: target: tcmu: Fix use-after-free of se_cmd->priv 2021-01-14 21:56:43 -05:00
target_core_xcopy.c scsi: target: Fix xcopy sess release leak 2020-07-08 00:14:34 -04:00
target_core_xcopy.h scsi: target: use the stack for XCOPY passthrough cmds 2020-03-29 18:10:59 -04:00