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scsi: target: core: Set residuals for 4Kn devices

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TCM always fails SBC commands with residuals for 4Kn devices when the
command is processed by sbc_parse_cdb(). That prevents residual signalling
to the transport driver because residual kind and residual amount aren't
set. It also makes residual handling different from 512-byte formatted
devices - if there are residuals 512-byte LUN would proceed with command
execution while 4K-byte LUN would fail.

Link: https://lore.kernel.org/r/20201203082035.54566-2-a.kovaleva@yadro.com
Based-on: https://patchwork.kernel.org/project/target-devel/patch/20170523234854.21452-31-bart.vanassche@sandisk.com/
Based-on-patch-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Roman Bolshakov <r.bolshakov@yadro.com>
Signed-off-by: Konstantin Vinogradov <k.vinogradov@yadro.com>
Signed-off-by: Anastasia Kovaleva <a.kovaleva@yadro.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Roman Bolshakov 2020-12-03 11:20:33 +03:00 committed by Martin K. Petersen
parent cd96fe600c
commit eb90e45542
1 changed files with 0 additions and 11 deletions
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11
drivers/target/target_core_transport.c
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@ -1332,17 +1332,6 @@ target_cmd_size_check(struct se_cmd *cmd, unsigned int size)
return TCM_INVALID_CDB_FIELD;
}
}
/*
* Reject READ_* or WRITE_* with overflow/underflow for
* type SCF_SCSI_DATA_CDB.
*/
if (dev->dev_attrib.block_size != 512) {
pr_err("Failing OVERFLOW/UNDERFLOW for LBA op"
" CDB on non 512-byte sector setup subsystem"
" plugin: %s\n", dev->transport->name);
/* Returns CHECK_CONDITION + INVALID_CDB_FIELD */
return TCM_INVALID_CDB_FIELD;
}
/*
* For the overflow case keep the existing fabric provided
* ->data_length. Otherwise for the underflow case, reset