From ffec28a3e959b156ea5906838a8897e27c8bbf22 Mon Sep 17 00:00:00 2001 From: Andrew Vasquez Date: Mon, 29 Jan 2007 10:22:27 -0800 Subject: [PATCH] [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 Signed-off-by: James Bottomley --- drivers/scsi/qla2xxx/qla_isr.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c index 6e19769b..df69dc0 100644 --- a/drivers/scsi/qla2xxx/qla_isr.c +++ b/drivers/scsi/qla2xxx/qla_isr.c @@ -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; -- 2.7.4