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1.. SPDX-License-Identifier: GPL-2.02 3========================4tcm_qla2xxx Driver Notes5========================6 7tcm_qla2xxx jam_host attribute8------------------------------9There is now a new module endpoint attribute called jam_host10attribute::11 12 jam_host: boolean=0/113 14This attribute and accompanying code is only included if the15Kconfig parameter TCM_QLA2XXX_DEBUG is set to Y16 17By default this jammer code and functionality is disabled18 19Use this attribute to control the discarding of SCSI commands to a20selected host.21 22This may be useful for testing error handling and simulating slow drain23and other fabric issues.24 25Setting a boolean of 1 for the jam_host attribute for a particular host26will discard the commands for that host.27 28Reset back to 0 to stop the jamming.29 30Enable host 4 to be jammed::31 32 echo 1 > /sys/kernel/config/target/qla2xxx/21:00:00:24:ff:27:8f:ae/tpgt_1/attrib/jam_host33 34Disable jamming on host 4::35 36 echo 0 > /sys/kernel/config/target/qla2xxx/21:00:00:24:ff:27:8f:ae/tpgt_1/attrib/jam_host37