scsi: lpfc: Convert SCSI I/O completions to SLI-3 and SLI-4 handlers

The current driver implementation uses SLI-4 WQE to iocb conversion before
calling the cmpl callback function.

Rework the FCP I/O completion path to utilize the SLI-4 WQE.

This patch converts the SCSI I/O completion paths from the iocb-centric
interfaces to the routines are native for whether I/Os are iocb-based
(SLI-3) or WQE-based (SLI-4).

Most existing routines were iocb-based, so this creates a lot of SLI-4
specific routines to provide the functionality.

Link: https://lore.kernel.org/r/20201115192646.12977-15-james.smart@broadcom.comCo-developed-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/lpfc/lpfc_sli.c

@@ -14339,7 +14339,9 @@ lpfc_sli4_fp_handle_fcp_wcqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
 #endif
 	if (cmdiocbq->iocb_cmpl == NULL) {
 		if (cmdiocbq->wqe_cmpl) {
-			if (cmdiocbq->iocb_flag & LPFC_DRIVER_ABORTED) {
+			/* For FCP the flag is cleared in wqe_cmpl */
+			if (!(cmdiocbq->iocb_flag & LPFC_IO_FCP) &&
+			    cmdiocbq->iocb_flag & LPFC_DRIVER_ABORTED) {
 				spin_lock_irqsave(&phba->hbalock, iflags);
 				cmdiocbq->iocb_flag &= ~LPFC_DRIVER_ABORTED;
 				spin_unlock_irqrestore(&phba->hbalock, iflags);
@@ -14356,6 +14358,7 @@ lpfc_sli4_fp_handle_fcp_wcqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
 		return;
 	}
 
+	/* Only SLI4 non-IO commands stil use IOCB */
 	/* Fake the irspiocb and copy necessary response information */
 	lpfc_sli4_iocb_param_transfer(phba, &irspiocbq, cmdiocbq, wcqe);