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platform_kernel-5.15
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[SCSI] qla2xxx: Allow the user the option of disabling iIDMA. 

iIDMA support requires the driver issue several additional
fabric-managegment (FM) commands per port discovered during SNS
scanning -- GFPN (Get Fabric Port Name) and GPSC (Get Port Speed
Capabilities).  It has been found during testing that some
switches do not respond as *well* as expected to these commands
(silence -- no ACC nor BS_RJT).  So, to handle such conditions,
allow the user the ability to indirectly disable the FM commands
by disabling iIDMA with the ql2xiidmaenable module-parameter.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
Andrew Vasquez 2008-07-10 16:55:52 -07:00 committed by James Bottomley
parent 711c1d916b
commit e5896bd5dc
3 changed files with 10 additions and 1 deletions
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1
drivers/scsi/qla2xxx/qla_gbl.h
View File

@ -62,6 +62,7 @@ extern int ql2xfdmienable;
extern int ql2xallocfwdump;
extern int ql2xextended_error_logging;
extern int ql2xqfullrampup;
extern int ql2xiidmaenable;
extern int qla2x00_loop_reset(scsi_qla_host_t *);
extern void qla2x00_abort_all_cmds(scsi_qla_host_t *, int);

3
drivers/scsi/qla2xxx/qla_init.c
View File

@ -2559,7 +2559,8 @@ qla2x00_find_all_fabric_devs(scsi_qla_host_t *ha, struct list_head *new_fcports)
} else if (qla2x00_gnn_id(ha, swl) != QLA_SUCCESS) {
kfree(swl);
swl = NULL;
} else if (qla2x00_gfpn_id(ha, swl) == QLA_SUCCESS) {
} else if (ql2xiidmaenable &&
qla2x00_gfpn_id(ha, swl) == QLA_SUCCESS) {
qla2x00_gpsc(ha, swl);
}
}

7
drivers/scsi/qla2xxx/qla_os.c
View File

@ -86,6 +86,13 @@ MODULE_PARM_DESC(ql2xqfullrampup,
"depth for a device after a queue-full condition has been "
"detected. Default is 120 seconds.");
int ql2xiidmaenable=1;
module_param(ql2xiidmaenable, int, S_IRUGO|S_IRUSR);
MODULE_PARM_DESC(ql2xiidmaenable,
"Enables iIDMA settings "
"Default is 1 - perform iIDMA. 0 - no iIDMA.");
/*
* SCSI host template entry points
*/