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tcm_loop: bump max_sectors

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There is not reason to artifically limit max_sectors in tcm_loop, set
it to UINT_MAX to allow stressing the large I/O handling in the target
core using the loopback driver.  Also remove various superflous defines
hiding the values set in the host template.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Christoph Hellwig 2011-11-29 03:20:41 -05:00 committed by Nicholas Bellinger
parent 0877eafd16
commit 2e88efd3aa
2 changed files with 5 additions and 14 deletions
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8
drivers/target/loopback/tcm_loop.c
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@ -416,11 +416,11 @@ static struct scsi_host_template tcm_loop_driver_template = {
.queuecommand = tcm_loop_queuecommand, .queuecommand = tcm_loop_queuecommand,
.change_queue_depth = tcm_loop_change_queue_depth, .change_queue_depth = tcm_loop_change_queue_depth,
.eh_device_reset_handler = tcm_loop_device_reset, .eh_device_reset_handler = tcm_loop_device_reset,
.can_queue = TL_SCSI_CAN_QUEUE, .can_queue = 1024,
.this_id = -1, .this_id = -1,
.sg_tablesize = TL_SCSI_SG_TABLESIZE, .sg_tablesize = 256,
.cmd_per_lun = TL_SCSI_CMD_PER_LUN, .cmd_per_lun = 1024,
.max_sectors = TL_SCSI_MAX_SECTORS, .max_sectors = 0xFFFF,
.use_clustering = DISABLE_CLUSTERING, .use_clustering = DISABLE_CLUSTERING,
.slave_alloc = tcm_loop_slave_alloc, .slave_alloc = tcm_loop_slave_alloc,
.slave_configure = tcm_loop_slave_configure, .slave_configure = tcm_loop_slave_configure,

11
drivers/target/loopback/tcm_loop.h
View File

@ -1,16 +1,7 @@
#define TCM_LOOP_VERSION "v2.1-rc1" #define TCM_LOOP_VERSION "v2.1-rc1"
#define TL_WWN_ADDR_LEN 256 #define TL_WWN_ADDR_LEN 256
#define TL_TPGS_PER_HBA 32 #define TL_TPGS_PER_HBA 32
/*
* Defaults for struct scsi_host_template tcm_loop_driver_template
*
* We use large can_queue and cmd_per_lun here and let TCM enforce
* the underlying se_device_t->queue_depth.
*/
#define TL_SCSI_CAN_QUEUE 1024
#define TL_SCSI_CMD_PER_LUN 1024
#define TL_SCSI_MAX_SECTORS 1024
#define TL_SCSI_SG_TABLESIZE 256
/* /*
* Used in tcm_loop_driver_probe() for struct Scsi_Host->max_cmd_len * Used in tcm_loop_driver_probe() for struct Scsi_Host->max_cmd_len
*/ */