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scsi: lpfc: Synchronize hardware queues with SCSI MQ interface

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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>
This commit is contained in:
James Smart
2019-01-28 11:14:27 -08:00
committed by Martin K. Petersen
parent 1fbf974250
commit ace44e48b1
4 changed files with 27 additions and 58 deletions
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8
drivers/scsi/lpfc/lpfc_init.c
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@@ -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