scsi: lpfc: Synchronize hardware queues with SCSI MQ interface
Now that the lower half has much better per-cpu parallelization using the
hardware queues, the SCSI MQ support needs to be tied into it.
The involves the following mods:
- Use the hardware queue info from the midlayer to help select the
hardware queue to utilize. This required change to the get_scsi-buf_xxx
routines.
- Remove lpfc_sli4_scmd_to_wqidx_distr() routine. No longer needed.
- Includes fix for SLI-3 that does not have multi queue parallelization.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index 36d9c32..88b1c3c 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -4063,12 +4063,16 @@ lpfc_create_port(struct lpfc_hba *phba, int instance, struct device *dev)
shost->max_lun = vport->cfg_max_luns;
shost->this_id = -1;
shost->max_cmd_len = 16;
- shost->nr_hw_queues = phba->cfg_hdw_queue;
if (phba->sli_rev == LPFC_SLI_REV4) {
+ shost->nr_hw_queues = phba->cfg_hdw_queue;
shost->dma_boundary =
phba->sli4_hba.pc_sli4_params.sge_supp_len-1;
shost->sg_tablesize = phba->cfg_scsi_seg_cnt;
- }
+ } else
+ /* SLI-3 has a limited number of hardware queues (3),
+ * thus there is only one for FCP processing.
+ */
+ shost->nr_hw_queues = 1;
/*
* Set initial can_queue value since 0 is no longer supported and