1 files changed, 192 insertions, 28 deletions

diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c
index 1f87b4fb8b50..0639c994349c 100644
--- a/drivers/scsi/lpfc/lpfc_hbadisc.c
+++ b/drivers/scsi/lpfc/lpfc_hbadisc.c
@@ -275,7 +275,9 @@ lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 	if (!(vport->load_flag & FC_UNLOADING) &&
 	    !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
 	    !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
-	    (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE))
+	    (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
+	    (ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) &&
+	    (ndlp->nlp_state != NLP_STE_PRLI_ISSUE))
 		lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
 
 	lpfc_unregister_unused_fcf(phba);
@@ -586,6 +588,8 @@ lpfc_work_done(struct lpfc_hba *phba)
 							(status &
 							 HA_RXMASK));
 		}
+		if (pring->txq_cnt)
+			lpfc_drain_txq(phba);
 		/*
 		 * Turn on Ring interrupts
 		 */
@@ -1297,7 +1301,7 @@ lpfc_register_fcf(struct lpfc_hba *phba)
  * used for this FCF when the function returns.
  * If the FCF record need to be used with a particular vlan id, the vlan is
  * set in the vlan_id on return of the function. If not VLAN tagging need to
- * be used with the FCF vlan_id will be set to 0xFFFF;
+ * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID;
  **/
 static int
 lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
@@ -1333,7 +1337,7 @@ lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
 		if (phba->valid_vlan)
 			*vlan_id = phba->vlan_id;
 		else
-			*vlan_id = 0xFFFF;
+			*vlan_id = LPFC_FCOE_NULL_VID;
 		return 1;
 	}
 
@@ -1357,7 +1361,7 @@ lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
 		if (fcf_vlan_id)
 			*vlan_id = fcf_vlan_id;
 		else
-			*vlan_id = 0xFFFF;
+			*vlan_id = LPFC_FCOE_NULL_VID;
 		return 1;
 	}
 
@@ -1466,7 +1470,7 @@ lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
 		else if (fcf_vlan_id)
 			*vlan_id = fcf_vlan_id;
 		else
-			*vlan_id = 0xFFFF;
+			*vlan_id = LPFC_FCOE_NULL_VID;
 
 		return 1;
 	}
@@ -1518,6 +1522,9 @@ lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
 		 * Do not continue FCF discovery and clear FCF_DISC_INPROGRESS
 		 * flag
 		 */
+		lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
+				"2833 Stop FCF discovery process due to link "
+				"state change (x%x)\n", phba->link_state);
 		spin_lock_irq(&phba->hbalock);
 		phba->hba_flag &= ~FCF_DISC_INPROGRESS;
 		phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY);
@@ -1565,7 +1572,7 @@ lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt)
 }
 
 /**
- * lpfc_mbx_cmpl_read_fcf_record - Completion handler for read_fcf mbox.
+ * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command.
  * @phba: pointer to lpfc hba data structure.
  * @mboxq: pointer to mailbox object.
  * @next_fcf_index: pointer to holder of next fcf index.
@@ -1693,6 +1700,37 @@ lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba,
 }
 
 /**
+ lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF
+ * @phba: pointer to lpfc hba data structure.
+ * @fcf_rec: pointer to an existing FCF record.
+ * @new_fcf_record: pointer to a new FCF record.
+ * @new_vlan_id: vlan id from the new FCF record.
+ *
+ * This function performs matching test of a new FCF record against an existing
+ * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id
+ * will not be used as part of the FCF record matching criteria.
+ *
+ * Returns true if all the fields matching, otherwise returns false.
+ */
+static bool
+lpfc_sli4_fcf_record_match(struct lpfc_hba *phba,
+			   struct lpfc_fcf_rec *fcf_rec,
+			   struct fcf_record *new_fcf_record,
+			   uint16_t new_vlan_id)
+{
+	if (new_vlan_id != LPFC_FCOE_IGNORE_VID)
+		if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id))
+			return false;
+	if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record))
+		return false;
+	if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record))
+		return false;
+	if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record))
+		return false;
+	return true;
+}
+
+/**
  * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler.
  * @phba: pointer to lpfc hba data structure.
  * @mboxq: pointer to mailbox object.
@@ -1755,7 +1793,7 @@ lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 	 */
 	if (!rc) {
 		lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
-				"2781 FCF record fcf_index:x%x failed FCF "
+				"2781 FCF record (x%x) failed FCF "
 				"connection list check, fcf_avail:x%x, "
 				"fcf_valid:x%x\n",
 				bf_get(lpfc_fcf_record_fcf_index,
@@ -1764,6 +1802,32 @@ lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 				       new_fcf_record),
 				bf_get(lpfc_fcf_record_fcf_valid,
 				       new_fcf_record));
+		if ((phba->fcf.fcf_flag & FCF_IN_USE) &&
+		    lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
+		    new_fcf_record, LPFC_FCOE_IGNORE_VID)) {
+			/*
+			 * In case the current in-use FCF record becomes
+			 * invalid/unavailable during FCF discovery that
+			 * was not triggered by fast FCF failover process,
+			 * treat it as fast FCF failover.
+			 */
+			if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) &&
+			    !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
+				lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
+						"2835 Invalid in-use FCF "
+						"record (x%x) reported, "
+						"entering fast FCF failover "
+						"mode scanning.\n",
+						phba->fcf.current_rec.fcf_indx);
+				spin_lock_irq(&phba->hbalock);
+				phba->fcf.fcf_flag |= FCF_REDISC_FOV;
+				spin_unlock_irq(&phba->hbalock);
+				lpfc_sli4_mbox_cmd_free(phba, mboxq);
+				lpfc_sli4_fcf_scan_read_fcf_rec(phba,
+						LPFC_FCOE_FCF_GET_FIRST);
+				return;
+			}
+		}
 		goto read_next_fcf;
 	} else {
 		fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
@@ -1780,14 +1844,8 @@ lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 	 */
 	spin_lock_irq(&phba->hbalock);
 	if (phba->fcf.fcf_flag & FCF_IN_USE) {
-		if (lpfc_fab_name_match(phba->fcf.current_rec.fabric_name,
-					new_fcf_record) &&
-		    lpfc_sw_name_match(phba->fcf.current_rec.switch_name,
-					new_fcf_record) &&
-		    lpfc_mac_addr_match(phba->fcf.current_rec.mac_addr,
-					new_fcf_record) &&
-		    lpfc_vlan_id_match(phba->fcf.current_rec.vlan_id,
-					vlan_id)) {
+		if (lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
+		    new_fcf_record, vlan_id)) {
 			phba->fcf.fcf_flag |= FCF_AVAILABLE;
 			if (phba->fcf.fcf_flag & FCF_REDISC_PEND)
 				/* Stop FCF redisc wait timer if pending */
@@ -1797,6 +1855,13 @@ lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 				phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV |
 							FCF_DISCOVERY);
 			spin_unlock_irq(&phba->hbalock);
+			lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
+					"2836 The new FCF record (x%x) "
+					"matches the in-use FCF record "
+					"(x%x)\n",
+					phba->fcf.current_rec.fcf_indx,
+					bf_get(lpfc_fcf_record_fcf_index,
+					       new_fcf_record));
 			goto out;
 		}
 		/*
@@ -1828,6 +1893,12 @@ lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 		 */
 		if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) {
 			/* Choose this FCF record */
+			lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
+					"2837 Update current FCF record "
+					"(x%x) with new FCF record (x%x)\n",
+					fcf_rec->fcf_indx,
+					bf_get(lpfc_fcf_record_fcf_index,
+					new_fcf_record));
 			__lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
 					addr_mode, vlan_id, BOOT_ENABLE);
 			spin_unlock_irq(&phba->hbalock);
@@ -1848,6 +1919,12 @@ lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 		 */
 		if (new_fcf_record->fip_priority < fcf_rec->priority) {
 			/* Choose the new FCF record with lower priority */
+			lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
+					"2838 Update current FCF record "
+					"(x%x) with new FCF record (x%x)\n",
+					fcf_rec->fcf_indx,
+					bf_get(lpfc_fcf_record_fcf_index,
+					       new_fcf_record));
 			__lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
 					addr_mode, vlan_id, 0);
 			/* Reset running random FCF selection count */
@@ -1857,11 +1934,18 @@ lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 			phba->fcf.eligible_fcf_cnt++;
 			select_new_fcf = lpfc_sli4_new_fcf_random_select(phba,
 						phba->fcf.eligible_fcf_cnt);
-			if (select_new_fcf)
+			if (select_new_fcf) {
+				lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
+					"2839 Update current FCF record "
+					"(x%x) with new FCF record (x%x)\n",
+					fcf_rec->fcf_indx,
+					bf_get(lpfc_fcf_record_fcf_index,
+					       new_fcf_record));
 				/* Choose the new FCF by random selection */
 				__lpfc_update_fcf_record(phba, fcf_rec,
 							 new_fcf_record,
 							 addr_mode, vlan_id, 0);
+			}
 		}
 		spin_unlock_irq(&phba->hbalock);
 		goto read_next_fcf;
@@ -1871,6 +1955,11 @@ lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 	 * initial best-fit FCF.
 	 */
 	if (fcf_rec) {
+		lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
+				"2840 Update current FCF record "
+				"with initial FCF record (x%x)\n",
+				bf_get(lpfc_fcf_record_fcf_index,
+				       new_fcf_record));
 		__lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
 					 addr_mode, vlan_id, (boot_flag ?
 					 BOOT_ENABLE : 0));
@@ -1928,12 +2017,23 @@ read_next_fcf:
 			lpfc_unregister_fcf(phba);
 
 			/* Replace in-use record with the new record */
+			lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
+					"2842 Replace the current in-use "
+					"FCF record (x%x) with failover FCF "
+					"record (x%x)\n",
+					phba->fcf.current_rec.fcf_indx,
+					phba->fcf.failover_rec.fcf_indx);
 			memcpy(&phba->fcf.current_rec,
 			       &phba->fcf.failover_rec,
 			       sizeof(struct lpfc_fcf_rec));
-			/* mark the FCF fast failover completed */
+			/*
+			 * Mark the fast FCF failover rediscovery completed
+			 * and the start of the first round of the roundrobin
+			 * FCF failover.
+			 */
 			spin_lock_irq(&phba->hbalock);
-			phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
+			phba->fcf.fcf_flag &=
+					~(FCF_REDISC_FOV | FCF_REDISC_RRU);
 			spin_unlock_irq(&phba->hbalock);
 			/*
 			 * Set up the initial registered FCF index for FLOGI
@@ -1951,15 +2051,42 @@ read_next_fcf:
 			if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) ||
 			    (phba->fcf.fcf_flag & FCF_REDISC_PEND))
 				return;
+
+			if (phba->fcf.fcf_flag & FCF_IN_USE) {
+				/*
+				 * In case the current in-use FCF record no
+				 * longer existed during FCF discovery that
+				 * was not triggered by fast FCF failover
+				 * process, treat it as fast FCF failover.
+				 */
+				lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
+						"2841 In-use FCF record (x%x) "
+						"not reported, entering fast "
+						"FCF failover mode scanning.\n",
+						phba->fcf.current_rec.fcf_indx);
+				spin_lock_irq(&phba->hbalock);
+				phba->fcf.fcf_flag |= FCF_REDISC_FOV;
+				spin_unlock_irq(&phba->hbalock);
+				lpfc_sli4_mbox_cmd_free(phba, mboxq);
+				lpfc_sli4_fcf_scan_read_fcf_rec(phba,
+						LPFC_FCOE_FCF_GET_FIRST);
+				return;
+			}
+
 			/*
 			 * Otherwise, initial scan or post linkdown rescan,
 			 * register with the best FCF record found so far
 			 * through the FCF scanning process.
 			 */
 
-			/* mark the initial FCF discovery completed */
+			/*
+			 * Mark the initial FCF discovery completed and
+			 * the start of the first round of the roundrobin
+			 * FCF failover.
+			 */
 			spin_lock_irq(&phba->hbalock);
-			phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
+			phba->fcf.fcf_flag &=
+					~(FCF_INIT_DISC | FCF_REDISC_RRU);
 			spin_unlock_irq(&phba->hbalock);
 			/*
 			 * Set up the initial registered FCF index for FLOGI
@@ -2033,6 +2160,11 @@ lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 				      next_fcf_index);
 
 	/* Upload new FCF record to the failover FCF record */
+	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
+			"2834 Update the current FCF record (x%x) "
+			"with the next FCF record (x%x)\n",
+			phba->fcf.failover_rec.fcf_indx,
+			bf_get(lpfc_fcf_record_fcf_index, new_fcf_record));
 	spin_lock_irq(&phba->hbalock);
 	__lpfc_update_fcf_record(phba, &phba->fcf.failover_rec,
 				 new_fcf_record, addr_mode, vlan_id,
@@ -2050,7 +2182,7 @@ lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 
 	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
 			"2783 FLOGI round robin FCF failover from FCF "
-			"(index:x%x) to FCF (index:x%x).\n",
+			"(x%x) to FCF (x%x).\n",
 			current_fcf_index,
 			bf_get(lpfc_fcf_record_fcf_index, new_fcf_record));
 
@@ -2084,7 +2216,7 @@ lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 		goto out;
 
 	/* If FCF discovery period is over, no need to proceed */
-	if (phba->fcf.fcf_flag & FCF_DISCOVERY)
+	if (!(phba->fcf.fcf_flag & FCF_DISCOVERY))
 		goto out;
 
 	/* Parse the FCF record from the non-embedded mailbox command */
@@ -2715,11 +2847,35 @@ lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 	struct lpfc_vport  *vport = pmb->vport;
 	struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
 	struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
+	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 
 	pmb->context1 = NULL;
 
-	/* Good status, call state machine */
-	lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
+	if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
+		ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
+
+	if (ndlp->nlp_flag &  NLP_IGNR_REG_CMPL ||
+		ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) {
+		/* We rcvd a rscn after issuing this
+		 * mbox reg login, we may have cycled
+		 * back through the state and be
+		 * back at reg login state so this
+		 * mbox needs to be ignored becase
+		 * there is another reg login in
+		 * proccess.
+		 */
+		spin_lock_irq(shost->host_lock);
+		ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
+		spin_unlock_irq(shost->host_lock);
+		if (phba->sli_rev == LPFC_SLI_REV4)
+			lpfc_sli4_free_rpi(phba,
+				pmb->u.mb.un.varRegLogin.rpi);
+
+	} else
+		/* Good status, call state machine */
+		lpfc_disc_state_machine(vport, ndlp, pmb,
+				NLP_EVT_CMPL_REG_LOGIN);
+
 	lpfc_mbuf_free(phba, mp->virt, mp->phys);
 	kfree(mp);
 	mempool_free(pmb, phba->mbox_mem_pool);
@@ -3427,7 +3583,7 @@ lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 	kref_init(&ndlp->kref);
 	NLP_INT_NODE_ACT(ndlp);
 	atomic_set(&ndlp->cmd_pending, 0);
-	ndlp->cmd_qdepth = LPFC_MAX_TGT_QDEPTH;
+	ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
 }
 
 struct lpfc_nodelist *
@@ -3700,6 +3856,7 @@ lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 				mempool_free(mbox, phba->mbox_mem_pool);
 		}
 		lpfc_no_rpi(phba, ndlp);
+
 		ndlp->nlp_rpi = 0;
 		ndlp->nlp_flag &= ~NLP_RPI_VALID;
 		ndlp->nlp_flag &= ~NLP_NPR_ADISC;
@@ -3842,6 +3999,9 @@ lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 				kfree(mp);
 			}
 			list_del(&mb->list);
+			if (phba->sli_rev == LPFC_SLI_REV4)
+				lpfc_sli4_free_rpi(phba,
+					 mb->u.mb.un.varRegLogin.rpi);
 			mempool_free(mb, phba->mbox_mem_pool);
 			/* We shall not invoke the lpfc_nlp_put to decrement
 			 * the ndlp reference count as we are in the process
@@ -3883,6 +4043,7 @@ lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 
 	lpfc_cancel_retry_delay_tmo(vport, ndlp);
 	if ((ndlp->nlp_flag & NLP_DEFER_RM) &&
+		!(ndlp->nlp_flag & NLP_REG_LOGIN_SEND) &&
 	    !(ndlp->nlp_flag & NLP_RPI_VALID)) {
 		/* For this case we need to cleanup the default rpi
 		 * allocated by the firmware.
@@ -5180,13 +5341,16 @@ void
 lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
 {
 	/*
-	 * If HBA is not running in FIP mode or if HBA does not support
-	 * FCoE or if FCF is not registered, do nothing.
+	 * If HBA is not running in FIP mode, if HBA does not support
+	 * FCoE, if FCF discovery is ongoing, or if FCF has not been
+	 * registered, do nothing.
 	 */
 	spin_lock_irq(&phba->hbalock);
 	if (!(phba->hba_flag & HBA_FCOE_SUPPORT) ||
 	    !(phba->fcf.fcf_flag & FCF_REGISTERED) ||
-	    !(phba->hba_flag & HBA_FIP_SUPPORT)) {
+	    !(phba->hba_flag & HBA_FIP_SUPPORT) ||
+	    (phba->fcf.fcf_flag & FCF_DISCOVERY) ||
+	    (phba->pport->port_state == LPFC_FLOGI)) {
 		spin_unlock_irq(&phba->hbalock);
 		return;
 	}