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scsi: tcm_loop: Allow queues, can_queue and cmd_per_lun to be settable 

Make can_queue, nr_hw_queues and cmd_per_lun settable by the user instead
of hard coding them.

Link: https://lore.kernel.org/r/1604257174-4524-9-git-send-email-michael.christie@oracle.com
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Mike Christie 2020-11-01 12:59:34 -06:00 committed by Martin K. Petersen
parent 1526d9f10c
commit 94a0dfcf7d
1 changed files with 12 additions and 2 deletions
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14
drivers/target/loopback/tcm_loop.c
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@ -46,6 +46,15 @@ static int tcm_loop_hba_no_cnt;
static int tcm_loop_queue_status(struct se_cmd *se_cmd); static int tcm_loop_queue_status(struct se_cmd *se_cmd);
static unsigned int tcm_loop_nr_hw_queues = 1;
module_param_named(nr_hw_queues, tcm_loop_nr_hw_queues, uint, 0644);
static unsigned int tcm_loop_can_queue = 1024;
module_param_named(can_queue, tcm_loop_can_queue, uint, 0644);
static unsigned int tcm_loop_cmd_per_lun = 1024;
module_param_named(cmd_per_lun, tcm_loop_cmd_per_lun, uint, 0644);
/* /*
* Called from struct target_core_fabric_ops->check_stop_free() * Called from struct target_core_fabric_ops->check_stop_free()
*/ */
@ -305,10 +314,8 @@ static struct scsi_host_template tcm_loop_driver_template = {
.eh_abort_handler = tcm_loop_abort_task, .eh_abort_handler = tcm_loop_abort_task,
.eh_device_reset_handler = tcm_loop_device_reset, .eh_device_reset_handler = tcm_loop_device_reset,
.eh_target_reset_handler = tcm_loop_target_reset, .eh_target_reset_handler = tcm_loop_target_reset,
.can_queue = 1024,
.this_id = -1, .this_id = -1,
.sg_tablesize = 256, .sg_tablesize = 256,
.cmd_per_lun = 1024,
.max_sectors = 0xFFFF, .max_sectors = 0xFFFF,
.dma_boundary = PAGE_SIZE - 1, .dma_boundary = PAGE_SIZE - 1,
.module = THIS_MODULE, .module = THIS_MODULE,
@ -342,6 +349,9 @@ static int tcm_loop_driver_probe(struct device *dev)
sh->max_lun = 0; sh->max_lun = 0;
sh->max_channel = 0; sh->max_channel = 0;
sh->max_cmd_len = SCSI_MAX_VARLEN_CDB_SIZE; sh->max_cmd_len = SCSI_MAX_VARLEN_CDB_SIZE;
sh->nr_hw_queues = tcm_loop_nr_hw_queues;
sh->can_queue = tcm_loop_can_queue;
sh->cmd_per_lun = tcm_loop_cmd_per_lun;
host_prot = SHOST_DIF_TYPE1_PROTECTION | SHOST_DIF_TYPE2_PROTECTION | host_prot = SHOST_DIF_TYPE1_PROTECTION | SHOST_DIF_TYPE2_PROTECTION |
SHOST_DIF_TYPE3_PROTECTION | SHOST_DIX_TYPE1_PROTECTION | SHOST_DIF_TYPE3_PROTECTION | SHOST_DIX_TYPE1_PROTECTION |