scsi: lpfc: SLI path split: Refactor misc ELS paths

This patch refactors the remaining ELS paths to use SLI-4 as the primary
interface. Paths include RRQ, RSCN, unsolicited ELS RQST and RSP paths, ELS
timeouts, etc.:

 - Remove unused routines lpfc_sli4_bpl2sgl and lpfc_sli4_iocb2wqe

 - Conversion away from using SLI-3 iocb structures to set/access fields in
   common routines. Use the new generic get/set routines that were added.
   This move changes code from indirect structure references to using local
   variables with the generic routines.

 - Refactor routines when setting non-generic fields, to have both SLI3 and
   SLI4 specific sections. This replaces the set-as-SLI3 then translate to
   SLI4 behavior of the past.

Link: https://lore.kernel.org/r/20220225022308.16486-12-jsmart2021@gmail.comCo-developed-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/lpfc/lpfc_hbadisc.c

@@ -5059,7 +5059,8 @@ lpfc_can_disctmo(struct lpfc_vport *vport)
 		vport->port_state, vport->fc_ns_retry, vport->fc_flag);
 
 	/* Turn off discovery timer if its running */
-	if (vport->fc_flag & FC_DISC_TMO) {
+	if (vport->fc_flag & FC_DISC_TMO ||
+	    timer_pending(&vport->fc_disctmo)) {
 		spin_lock_irqsave(shost->host_lock, iflags);
 		vport->fc_flag &= ~FC_DISC_TMO;
 		spin_unlock_irqrestore(shost->host_lock, iflags);
@@ -5088,20 +5089,26 @@ lpfc_check_sli_ndlp(struct lpfc_hba *phba,
 		    struct lpfc_iocbq *iocb,
 		    struct lpfc_nodelist *ndlp)
 {
-	IOCB_t *icmd = &iocb->iocb;
-	struct lpfc_vport    *vport = ndlp->vport;
+	struct lpfc_vport *vport = ndlp->vport;
+	u8 ulp_command;
+	u16 ulp_context;
+	u32 remote_id;
 
 	if (iocb->vport != vport)
 		return 0;
 
+	ulp_command = get_job_cmnd(phba, iocb);
+	ulp_context = get_job_ulpcontext(phba, iocb);
+	remote_id = get_job_els_rsp64_did(phba, iocb);
+
 	if (pring->ringno == LPFC_ELS_RING) {
-		switch (icmd->ulpCommand) {
+		switch (ulp_command) {
 		case CMD_GEN_REQUEST64_CR:
 			if (iocb->context_un.ndlp == ndlp)
 				return 1;
 			fallthrough;
 		case CMD_ELS_REQUEST64_CR:
-			if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
+			if (remote_id == ndlp->nlp_DID)
 				return 1;
 			fallthrough;
 		case CMD_XMIT_ELS_RSP64_CX:
@@ -5114,9 +5121,8 @@ lpfc_check_sli_ndlp(struct lpfc_hba *phba,
 		    (ndlp->nlp_flag & NLP_DELAY_TMO)) {
 			return 0;
 		}
-		if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
+		if (ulp_context == ndlp->nlp_rpi)
 			return 1;
-		}
 	}
 	return 0;
 }
@@ -6027,9 +6033,9 @@ static void
 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
 {
 	LIST_HEAD(completions);
-	IOCB_t     *icmd;
 	struct lpfc_iocbq    *iocb, *next_iocb;
 	struct lpfc_sli_ring *pring;
+	u32 ulp_command;
 
 	pring = lpfc_phba_elsring(phba);
 	if (unlikely(!pring))
@@ -6040,12 +6046,13 @@ lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
 	 */
 	spin_lock_irq(&phba->hbalock);
 	list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
-		if (iocb->context1 != ndlp) {
+		if (iocb->context1 != ndlp)
 			continue;
-		}
-		icmd = &iocb->iocb;
-		if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
-		    (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
+
+		ulp_command = get_job_cmnd(phba, iocb);
+
+		if (ulp_command == CMD_ELS_REQUEST64_CR ||
+		    ulp_command == CMD_XMIT_ELS_RSP64_CX) {
 
 			list_move_tail(&iocb->list, &completions);
 		}
@@ -6053,12 +6060,13 @@ lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
 
 	/* Next check the txcmplq */
 	list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
-		if (iocb->context1 != ndlp) {
+		if (iocb->context1 != ndlp)
 			continue;
-		}
-		icmd = &iocb->iocb;
-		if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
-		    icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
+
+		ulp_command = get_job_cmnd(phba, iocb);
+
+		if (ulp_command == CMD_ELS_REQUEST64_CR ||
+		    ulp_command == CMD_XMIT_ELS_RSP64_CX) {
 			lpfc_sli_issue_abort_iotag(phba, pring, iocb, NULL);
 		}
 	}

drivers/scsi/lpfc/lpfc_nportdisc.c

@@ -171,9 +171,8 @@ lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
 	struct lpfc_dmabuf *pcmd, *prsp;
 	uint32_t *lp;
 	void     *ptr = NULL;
-	IOCB_t   *irsp;
+	u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
 
-	irsp = &rspiocb->iocb;
 	pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
 
 	/* For lpfc_els_abort, context2 could be zero'ed to delay
@@ -187,10 +186,16 @@ lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
 			ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
 		}
 	} else {
-		/* Force ulpStatus error since we are returning NULL ptr */
-		if (!(irsp->ulpStatus)) {
-			irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
-			irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
+		/* Force ulp_status error since we are returning NULL ptr */
+		if (!(ulp_status)) {
+			if (phba->sli_rev == LPFC_SLI_REV4) {
+				bf_set(lpfc_wcqe_c_status, &rspiocb->wcqe_cmpl,
+				       IOSTAT_LOCAL_REJECT);
+				rspiocb->wcqe_cmpl.parameter = IOERR_SLI_ABORTED;
+			} else {
+				rspiocb->iocb.ulpStatus = IOSTAT_LOCAL_REJECT;
+				rspiocb->iocb.un.ulpWord[4] = IOERR_SLI_ABORTED;
+			}
 		}
 		ptr = NULL;
 	}
@@ -325,6 +330,7 @@ lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 	struct lpfc_dmabuf *mp;
 	uint64_t nlp_portwwn = 0;
 	uint32_t *lp;
+	union lpfc_wqe128 *wqe;
 	IOCB_t *icmd;
 	struct serv_parm *sp;
 	uint32_t ed_tov;
@@ -334,6 +340,7 @@ lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 	struct ls_rjt stat;
 	uint32_t vid, flag;
 	int rc;
+	u32 remote_did;
 
 	memset(&stat, 0, sizeof (struct ls_rjt));
 	pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
@@ -367,7 +374,11 @@ lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 			NULL);
 		return 0;
 	}
-	icmd = &cmdiocb->iocb;
+
+	if (phba->sli_rev == LPFC_SLI_REV4)
+		wqe = &cmdiocb->wqe;
+	else
+		icmd = &cmdiocb->iocb;
 
 	/* PLOGI chkparm OK */
 	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
@@ -457,7 +468,12 @@ lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 	if ((vport->fc_flag & FC_PT2PT) &&
 	    !(vport->fc_flag & FC_PT2PT_PLOGI)) {
 		/* rcv'ed PLOGI decides what our NPortId will be */
-		vport->fc_myDID = icmd->un.rcvels.parmRo;
+		if (phba->sli_rev == LPFC_SLI_REV4) {
+			vport->fc_myDID = bf_get(els_rsp64_sid,
+						 &cmdiocb->wqe.xmit_els_rsp);
+		} else {
+			vport->fc_myDID = icmd->un.rcvels.parmRo;
+		}
 
 		/* If there is an outstanding FLOGI, abort it now.
 		 * The remote NPort is not going to ACC our FLOGI
@@ -538,7 +554,11 @@ lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 	/* Issue REG_LOGIN first, before ACCing the PLOGI, thus we will
 	 * always be deferring the ACC.
 	 */
-	rc = lpfc_reg_rpi(phba, vport->vpi, icmd->un.rcvels.remoteID,
+	if (phba->sli_rev == LPFC_SLI_REV4)
+		remote_did = bf_get(wqe_els_did, &wqe->xmit_els_rsp.wqe_dest);
+	else
+		remote_did = icmd->un.rcvels.remoteID;
+	rc = lpfc_reg_rpi(phba, vport->vpi, remote_did,
 			    (uint8_t *)sp, login_mbox, ndlp->nlp_rpi);
 	if (rc)
 		goto out;