.. SPDX-License-Identifier: GPL-2.0 ======================== tcm_qla2xxx Driver Notes ======================== tcm_qla2xxx jam_host attribute ------------------------------ There is now a new module endpoint atribute called jam_host attribute:: jam_host: boolean=0/1 This attribute and accompanying code is only included if the Kconfig parameter TCM_QLA2XXX_DEBUG is set to Y By default this jammer code and functionality is disabled Use this attribute to control the discarding of SCSI commands to a selected host. This may be useful for testing error handling and simulating slow drain and other fabric issues. Setting a boolean of 1 for the jam_host attribute for a particular host will discard the commands for that host. Reset back to 0 to stop the jamming. Enable host 4 to be jammed:: echo 1 > /sys/kernel/config/target/qla2xxx/21:00:00:24:ff:27:8f:ae/tpgt_1/attrib/jam_host Disable jamming on host 4:: echo 0 > /sys/kernel/config/target/qla2xxx/21:00:00:24:ff:27:8f:ae/tpgt_1/attrib/jam_host