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Commit ffec28a3 authored Jan 29, 2007 by Andrew Vasquez Committed by James Bottomley Jan 31, 2007

[SCSI] qla2xxx: Enable queue-full throttling when UNDERRUN detected.



As ISP24xx firmware can return a CS_DATA_UNDERRUN completion
status when the storage has returned a
SAM_STAT_TASK_SET_FULL scsi-status.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

parent 7aef45ac

drivers/scsi/qla2xxx/qla_isr.c

+16 −0

Original line number	Diff line number	Diff line
		@@ -987,6 +987,22 @@ qla2x00_status_entry(scsi_qla_host_t ha, void pkt)
		if (lscsi_status != 0) {
		cp->result = DID_OK << 16 \| lscsi_status;

		if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
		DEBUG2(printk(KERN_INFO
		"scsi(%ld): QUEUE FULL status detected "
		"0x%x-0x%x.\n", ha->host_no, comp_status,
		scsi_status));

		/*
		* Adjust queue depth for all luns on the
		* port.
		*/
		fcport->last_queue_full = jiffies;
		starget_for_each_device(
		cp->device->sdev_target, fcport,
		qla2x00_adjust_sdev_qdepth_down);
		break;
		}
		if (lscsi_status != SS_CHECK_CONDITION)
		break;