[SCSI] lpfc 8.2.6 : Multiple discovery fixes

Multiple Discovery Fixes:
- Fix race on discovery due to link events coinciding with vport_delete.
- Use NLP_FABRIC state to filter out switch-based pseudo initiators that
   reuse the same WWNs.
- Correct erroneous setting of DID=0 in lpfc_matchdid()
- Correct extra reference count that was in the lookup path for the
  remoteid from an unsolicited ELS.
- Correct double-free bug in els abort path.
- Correct FDMI server discovery logic for switch that return a WWN of 0.
- Fix bugs in ndlp mgmt when a node changes address
- Correct bug that did not delete RSCNs for vports upon link transitions
- Fix "0216 Link event during NS query" error which pops up when vports
  are swapped to different switch ports.
- Add sanity checks on ndlp structures
- Fix devloss log message to dump WWN correctly
- Hold off mgmt commands that were interferring with discovery mailbox cmds
- Remove unnecessary FC_ESTABLISH_LINK logic.
- Correct some race conditions in the worker thread, resulting in devloss:
  - Clear the work_port_events field before handling the work port events
  - Clear the deferred ring event before handling a deferred ring event
  - Hold the hba lock when waking up the work thread
  - Send an acc for the rscn even when we aren't going to handle it
- Fix locking behavior that was not properly protecting the ACTIVE flag,
  thus allowing mailbox command order to shift.

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

11 files changed, 208 insertions, 201 deletions

diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h
index 2ab2d24dcc1..c66d8d19c57 100644
--- a/drivers/scsi/lpfc/lpfc.h
+++ b/drivers/scsi/lpfc/lpfc.h
@@ -268,7 +268,6 @@ struct lpfc_vport {
 #define FC_NLP_MORE             0x40     /* More node to process in node tbl */
 #define FC_OFFLINE_MODE         0x80     /* Interface is offline for diag */
 #define FC_FABRIC               0x100    /* We are fabric attached */
-#define FC_ESTABLISH_LINK       0x200    /* Reestablish Link */
 #define FC_RSCN_DISCOVERY       0x400    /* Auth all devices after RSCN */
 #define FC_SCSI_SCAN_TMO        0x4000   /* scsi scan timer running */
 #define FC_ABORT_DISCOVERY      0x8000   /* we want to abort discovery */
@@ -433,8 +432,6 @@ struct lpfc_hba {
 
         uint32_t fc_eventTag;   /* event tag for link attention */
 
-
-        struct timer_list fc_estabtmo;  /* link establishment timer */
         /* These fields used to be binfo */
         uint32_t fc_pref_DID;   /* preferred D_ID */
         uint8_t  fc_pref_ALPA;  /* preferred AL_PA */
diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
index b12a841703c..6917800fc1a 100644
--- a/drivers/scsi/lpfc/lpfc_attr.c
+++ b/drivers/scsi/lpfc/lpfc_attr.c
@@ -1962,7 +1962,11 @@ sysfs_mbox_read(struct kobject *kobj, struct bin_attribute *bin_attr,
 
                 phba->sysfs_mbox.mbox->vport = vport;
 
-                if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO) {
+                /* Don't allow mailbox commands to be sent when blocked
+                 * or when in the middle of discovery
+                 */
+                if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO ||
+                    vport->fc_flag & FC_NDISC_ACTIVE) {
                         sysfs_mbox_idle(phba);
                         spin_unlock_irq(&phba->hbalock);
                         return  -EAGAIN;
diff --git a/drivers/scsi/lpfc/lpfc_ct.c b/drivers/scsi/lpfc/lpfc_ct.c
index 3d0ccd9b341..b64dc711cd8 100644
--- a/drivers/scsi/lpfc/lpfc_ct.c
+++ b/drivers/scsi/lpfc/lpfc_ct.c
@@ -438,7 +438,7 @@ lpfc_ns_rsp(struct lpfc_vport *vport, struct lpfc_dmabuf *mp, uint32_t Size)
                                     (!(vport->ct_flags & FC_CT_RFF_ID)) ||
                                     (!vport->cfg_restrict_login)) {
                                         ndlp = lpfc_setup_disc_node(vport, Did);
-                                        if (ndlp) {
+                                        if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
                                                 lpfc_debugfs_disc_trc(vport,
                                                 LPFC_DISC_TRC_CT,
                                                 "Parse GID_FTrsp: "
@@ -543,7 +543,7 @@ lpfc_cmpl_ct_cmd_gid_ft(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
         struct lpfc_dmabuf *outp;
         struct lpfc_sli_ct_request *CTrsp;
         struct lpfc_nodelist *ndlp;
-        int rc, retry;
+        int rc;
 
         /* First save ndlp, before we overwrite it */
         ndlp = cmdiocb->context_un.ndlp;
@@ -563,45 +563,29 @@ lpfc_cmpl_ct_cmd_gid_ft(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
         if (vport->load_flag & FC_UNLOADING)
                 goto out;
 
-        if (lpfc_els_chk_latt(vport) || lpfc_error_lost_link(irsp)) {
+        if (lpfc_els_chk_latt(vport)) {
                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
                                  "0216 Link event during NS query\n");
                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
                 goto out;
         }
-
+        if (lpfc_error_lost_link(irsp)) {
+                lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
+                                 "0226 NS query failed due to link event\n");
+                goto out;
+        }
         if (irsp->ulpStatus) {
                 /* Check for retry */
                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
-                        retry = 1;
-                        if (irsp->ulpStatus == IOSTAT_LOCAL_REJECT) {
-                                switch (irsp->un.ulpWord[4]) {
-                                case IOERR_NO_RESOURCES:
-                                        /* We don't increment the retry
-                                         * count for this case.
-                                         */
-                                        break;
-                                case IOERR_LINK_DOWN:
-                                case IOERR_SLI_ABORTED:
-                                case IOERR_SLI_DOWN:
-                                        retry = 0;
-                                        break;
-                                default:
-                                        vport->fc_ns_retry++;
-                                }
-                        }
-                        else
+                        if (irsp->ulpStatus != IOSTAT_LOCAL_REJECT ||
+                            irsp->un.ulpWord[4] != IOERR_NO_RESOURCES)
                                 vport->fc_ns_retry++;
 
-                        if (retry) {
-                                /* CT command is being retried */
-                                rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
+                        /* CT command is being retried */
+                        rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
                                          vport->fc_ns_retry, 0);
-                                if (rc == 0) {
-                                        /* success */
-                                        goto out;
-                                }
-                        }
+                        if (rc == 0)
+                                goto out;
                 }
                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
@@ -780,7 +764,7 @@ lpfc_cmpl_ct_cmd_gff_id(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
 
         /* This is a target port, unregistered port, or the GFF_ID failed */
         ndlp = lpfc_setup_disc_node(vport, did);
-        if (ndlp) {
+        if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
                                  "0242 Process x%x GFF "
                                  "NameServer Rsp Data: x%x x%x x%x\n",
diff --git a/drivers/scsi/lpfc/lpfc_debugfs.c b/drivers/scsi/lpfc/lpfc_debugfs.c
index 783d1eea13e..90272e65957 100644
--- a/drivers/scsi/lpfc/lpfc_debugfs.c
+++ b/drivers/scsi/lpfc/lpfc_debugfs.c
@@ -503,6 +503,8 @@ lpfc_debugfs_nodelist_data(struct lpfc_vport *vport, char *buf, int size)
                                 ndlp->nlp_sid);
                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
                         len +=  snprintf(buf+len, size-len, "FCP_INITIATOR ");
+                len += snprintf(buf+len, size-len, "usgmap:%x ",
+                        ndlp->nlp_usg_map);
                 len += snprintf(buf+len, size-len, "refcnt:%x",
                         atomic_read(&ndlp->kref.refcount));
                 len +=  snprintf(buf+len, size-len, "\n");
diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c
index cbb68a94225..6e0e991c644 100644
--- a/drivers/scsi/lpfc/lpfc_els.c
+++ b/drivers/scsi/lpfc/lpfc_els.c
@@ -719,9 +719,9 @@ lpfc_els_abort_flogi(struct lpfc_hba *phba)
                 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR &&
                     icmd->un.elsreq64.bdl.ulpIoTag32) {
                         ndlp = (struct lpfc_nodelist *)(iocb->context1);
-                        if (ndlp && (ndlp->nlp_DID == Fabric_DID)) {
+                        if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
+                            (ndlp->nlp_DID == Fabric_DID))
                                 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
-                        }
                 }
         }
         spin_unlock_irq(&phba->hbalock);
@@ -829,7 +829,7 @@ lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp,
         struct fc_rport *rport;
         struct serv_parm *sp;
         uint8_t  name[sizeof(struct lpfc_name)];
-        uint32_t rc;
+        uint32_t rc, keepDID = 0;
 
         /* Fabric nodes can have the same WWPN so we don't bother searching
          * by WWPN.  Just return the ndlp that was given to us.
@@ -858,11 +858,17 @@ lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp,
                         return ndlp;
                 lpfc_nlp_init(vport, new_ndlp, ndlp->nlp_DID);
         } else if (!NLP_CHK_NODE_ACT(new_ndlp)) {
+                rc = memcmp(&ndlp->nlp_portname, name,
+                            sizeof(struct lpfc_name));
+                if (!rc)
+                        return ndlp;
                 new_ndlp = lpfc_enable_node(vport, new_ndlp,
                                                 NLP_STE_UNUSED_NODE);
                 if (!new_ndlp)
                         return ndlp;
-        }
+                keepDID = new_ndlp->nlp_DID;
+        } else
+                keepDID = new_ndlp->nlp_DID;
 
         lpfc_unreg_rpi(vport, new_ndlp);
         new_ndlp->nlp_DID = ndlp->nlp_DID;
@@ -893,12 +899,24 @@ lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp,
                         }
                         new_ndlp->nlp_type = ndlp->nlp_type;
                 }
+                /* We shall actually free the ndlp with both nlp_DID and
+                 * nlp_portname fields equals 0 to avoid any ndlp on the
+                 * nodelist never to be used.
+                 */
+                if (ndlp->nlp_DID == 0) {
+                        spin_lock_irq(&phba->ndlp_lock);
+                        NLP_SET_FREE_REQ(ndlp);
+                        spin_unlock_irq(&phba->ndlp_lock);
+                }
 
+                /* Two ndlps cannot have the same did on the nodelist */
+                ndlp->nlp_DID = keepDID;
                 lpfc_drop_node(vport, ndlp);
         }
         else {
                 lpfc_unreg_rpi(vport, ndlp);
-                ndlp->nlp_DID = 0; /* Two ndlps cannot have the same did */
+                /* Two ndlps cannot have the same did */
+                ndlp->nlp_DID = keepDID;
                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
         }
         return new_ndlp;
@@ -2091,7 +2109,7 @@ lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
                 }
 
                 phba->fc_stat.elsXmitRetry++;
-                if (ndlp && delay) {
+                if (ndlp && NLP_CHK_NODE_ACT(ndlp) && delay) {
                         phba->fc_stat.elsDelayRetry++;
                         ndlp->nlp_retry = cmdiocb->retry;
 
@@ -2121,7 +2139,7 @@ lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
                         lpfc_issue_els_fdisc(vport, ndlp, cmdiocb->retry);
                         return 1;
                 case ELS_CMD_PLOGI:
-                        if (ndlp) {
+                        if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
                                 ndlp->nlp_prev_state = ndlp->nlp_state;
                                 lpfc_nlp_set_state(vport, ndlp,
                                                    NLP_STE_PLOGI_ISSUE);
@@ -2302,7 +2320,7 @@ lpfc_mbx_cmpl_dflt_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
         lpfc_mbuf_free(phba, mp->virt, mp->phys);
         kfree(mp);
         mempool_free(pmb, phba->mbox_mem_pool);
-        if (ndlp) {
+        if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
                 lpfc_nlp_put(ndlp);
                 /* This is the end of the default RPI cleanup logic for this
                  * ndlp. If no other discovery threads are using this ndlp.
@@ -2335,7 +2353,8 @@ lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
          * function can have cmdiocb->contest1 (ndlp) field set to NULL.
          */
         pcmd = (uint8_t *) (((struct lpfc_dmabuf *) cmdiocb->context2)->virt);
-        if (ndlp && (*((uint32_t *) (pcmd)) == ELS_CMD_LS_RJT)) {
+        if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
+            (*((uint32_t *) (pcmd)) == ELS_CMD_LS_RJT)) {
                 /* A LS_RJT associated with Default RPI cleanup has its own
                  * seperate code path.
                  */
@@ -2344,7 +2363,7 @@ lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
         }
 
         /* Check to see if link went down during discovery */
-        if (!ndlp || lpfc_els_chk_latt(vport)) {
+        if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || lpfc_els_chk_latt(vport)) {
                 if (mbox) {
                         mp = (struct lpfc_dmabuf *) mbox->context1;
                         if (mp) {
@@ -2353,7 +2372,8 @@ lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
                         }
                         mempool_free(mbox, phba->mbox_mem_pool);
                 }
-                if (ndlp && (ndlp->nlp_flag & NLP_RM_DFLT_RPI))
+                if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
+                    (ndlp->nlp_flag & NLP_RM_DFLT_RPI))
                         if (lpfc_nlp_not_used(ndlp)) {
                                 ndlp = NULL;
                                 /* Indicate the node has already released,
@@ -2443,7 +2463,7 @@ lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
                 mempool_free(mbox, phba->mbox_mem_pool);
         }
 out:
-        if (ndlp) {
+        if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
                 spin_lock_irq(shost->host_lock);
                 ndlp->nlp_flag &= ~(NLP_ACC_REGLOGIN | NLP_RM_DFLT_RPI);
                 spin_unlock_irq(shost->host_lock);
@@ -3139,6 +3159,8 @@ lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
                 /* Another thread is walking fc_rscn_id_list on this vport */
                 spin_unlock_irq(shost->host_lock);
                 vport->fc_flag |= FC_RSCN_DISCOVERY;
+                /* Send back ACC */
+                lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
                 return 0;
         }
         /* Indicate we are walking fc_rscn_id_list on this vport */
@@ -3928,7 +3950,7 @@ lpfc_els_timeout_handler(struct lpfc_vport *vport)
                 else {
                         struct lpfc_nodelist *ndlp;
                         ndlp = __lpfc_findnode_rpi(vport, cmd->ulpContext);
-                        if (ndlp)
+                        if (ndlp && NLP_CHK_NODE_ACT(ndlp))
                                 remote_ID = ndlp->nlp_DID;
                 }
                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
@@ -4097,21 +4119,22 @@ lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
                 newnode = 1;
                 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
                         ndlp->nlp_type |= NLP_FABRIC;
-        } else {
-                if (!NLP_CHK_NODE_ACT(ndlp)) {
-                        ndlp = lpfc_enable_node(vport, ndlp,
-                                                NLP_STE_UNUSED_NODE);
-                        if (!ndlp)
-                                goto dropit;
-                }
-                if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
-                        /* This is simular to the new node path */
-                        ndlp = lpfc_nlp_get(ndlp);
-                        if (!ndlp)
-                                goto dropit;
-                        lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
-                        newnode = 1;
-                }
+        } else if (!NLP_CHK_NODE_ACT(ndlp)) {
+                ndlp = lpfc_enable_node(vport, ndlp,
+                                        NLP_STE_UNUSED_NODE);
+                if (!ndlp)
+                        goto dropit;
+                lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+                newnode = 1;
+                if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
+                        ndlp->nlp_type |= NLP_FABRIC;
+        } else if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
+                /* This is similar to the new node path */
+                ndlp = lpfc_nlp_get(ndlp);
+                if (!ndlp)
+                        goto dropit;
+                lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+                newnode = 1;
         }
 
         phba->fc_stat.elsRcvFrame++;
@@ -4451,7 +4474,6 @@ lpfc_do_scr_ns_plogi(struct lpfc_hba *phba, struct lpfc_vport *vport)
                         return;
                 }
                 lpfc_nlp_init(vport, ndlp, NameServer_DID);
-                ndlp->nlp_type |= NLP_FABRIC;
         } else if (!NLP_CHK_NODE_ACT(ndlp)) {
                 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
                 if (!ndlp) {
@@ -4465,6 +4487,7 @@ lpfc_do_scr_ns_plogi(struct lpfc_hba *phba, struct lpfc_vport *vport)
                         return;
                 }
         }
+        ndlp->nlp_type |= NLP_FABRIC;
 
         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
 
@@ -4481,8 +4504,8 @@ lpfc_do_scr_ns_plogi(struct lpfc_hba *phba, struct lpfc_vport *vport)
                 if (ndlp_fdmi) {
                         lpfc_nlp_init(vport, ndlp_fdmi, FDMI_DID);
                         ndlp_fdmi->nlp_type |= NLP_FABRIC;
-                        ndlp_fdmi->nlp_state =
-                                NLP_STE_PLOGI_ISSUE;
+                        lpfc_nlp_set_state(vport, ndlp_fdmi,
+                                NLP_STE_PLOGI_ISSUE);
                         lpfc_issue_els_plogi(vport, ndlp_fdmi->nlp_DID,
                                              0);
                 }
diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c
index 976653440fb..7c8c3e6f399 100644
--- a/drivers/scsi/lpfc/lpfc_hbadisc.c
+++ b/drivers/scsi/lpfc/lpfc_hbadisc.c
@@ -69,7 +69,7 @@ lpfc_terminate_rport_io(struct fc_rport *rport)
         rdata = rport->dd_data;
         ndlp = rdata->pnode;
 
-        if (!ndlp) {
+        if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
                 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
                         printk(KERN_ERR "Cannot find remote node"
                         " to terminate I/O Data x%x\n",
@@ -114,7 +114,7 @@ lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
 
         rdata = rport->dd_data;
         ndlp = rdata->pnode;
-        if (!ndlp)
+        if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
                 return;
 
         vport = ndlp->vport;
@@ -243,8 +243,8 @@ lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
         if (warn_on) {
                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
                                  "0203 Devloss timeout on "
-                                 "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
-                                 "NPort x%x Data: x%x x%x x%x\n",
+                                 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
+                                 "NPort x%06x Data: x%x x%x x%x\n",
                                  *name, *(name+1), *(name+2), *(name+3),
                                  *(name+4), *(name+5), *(name+6), *(name+7),
                                  ndlp->nlp_DID, ndlp->nlp_flag,
@@ -252,8 +252,8 @@ lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
         } else {
                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
                                  "0204 Devloss timeout on "
-                                 "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
-                                 "NPort x%x Data: x%x x%x x%x\n",
+                                 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
+                                 "NPort x%06x Data: x%x x%x x%x\n",
                                  *name, *(name+1), *(name+2), *(name+3),
                                  *(name+4), *(name+5), *(name+6), *(name+7),
                                  ndlp->nlp_DID, ndlp->nlp_flag,
@@ -399,7 +399,10 @@ lpfc_work_done(struct lpfc_hba *phba)
                                 vport = vports[i];
                         if (vport == NULL)
                                 break;
+                        spin_lock_irq(&vport->work_port_lock);
                         work_port_events = vport->work_port_events;
+                        vport->work_port_events &= ~work_port_events;
+                        spin_unlock_irq(&vport->work_port_lock);
                         if (work_port_events & WORKER_DISC_TMO)
                                 lpfc_disc_timeout_handler(vport);
                         if (work_port_events & WORKER_ELS_TMO)
@@ -416,9 +419,6 @@ lpfc_work_done(struct lpfc_hba *phba)
                                 lpfc_ramp_down_queue_handler(phba);
                         if (work_port_events & WORKER_RAMP_UP_QUEUE)
                                 lpfc_ramp_up_queue_handler(phba);
-                        spin_lock_irq(&vport->work_port_lock);
-                        vport->work_port_events &= ~work_port_events;
-                        spin_unlock_irq(&vport->work_port_lock);
                 }
         lpfc_destroy_vport_work_array(phba, vports);
 
@@ -430,10 +430,10 @@ lpfc_work_done(struct lpfc_hba *phba)
                 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
                 } else {
+                        pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
                         lpfc_sli_handle_slow_ring_event(phba, pring,
                                                         (status &
                                                          HA_RXMASK));
-                        pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
                 }
                 /*
                  * Turn on Ring interrupts
@@ -519,7 +519,9 @@ lpfc_do_work(void *p)
                         schedule();
                 }
         }
+        spin_lock_irq(&phba->hbalock);
         phba->work_wait = NULL;
+        spin_unlock_irq(&phba->hbalock);
         return 0;
 }
 
@@ -809,11 +811,9 @@ out:
         mempool_free(pmb, phba->mbox_mem_pool);
 
         spin_lock_irq(shost->host_lock);
-        vport->fc_flag &= ~(FC_ABORT_DISCOVERY | FC_ESTABLISH_LINK);
+        vport->fc_flag &= ~FC_ABORT_DISCOVERY;
         spin_unlock_irq(shost->host_lock);
 
-        del_timer_sync(&phba->fc_estabtmo);
-
         lpfc_can_disctmo(vport);
 
         /* turn on Link Attention interrupts */
@@ -1340,10 +1340,14 @@ lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
                             i++) {
                                 if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
                                         continue;
+                                if (phba->fc_topology == TOPOLOGY_LOOP) {
+                                        lpfc_vport_set_state(vports[i],
+                                                        FC_VPORT_LINKDOWN);
+                                        continue;
+                                }
                                 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
                                         lpfc_initial_fdisc(vports[i]);
-                                else if (phba->sli3_options &
-                                                LPFC_SLI3_NPIV_ENABLED) {
+                                else {
                                         lpfc_vport_set_state(vports[i],
                                                 FC_VPORT_NO_FABRIC_SUPP);
                                         lpfc_printf_vlog(vport, KERN_ERR,
@@ -2190,10 +2194,6 @@ lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
         if (did == Bcast_DID)
                 return 0;
 
-        if (ndlp->nlp_DID == 0) {
-                return 0;
-        }
-
         /* First check for Direct match */
         if (ndlp->nlp_DID == did)
                 return 1;
@@ -2301,7 +2301,8 @@ lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
                 return ndlp;
         }
 
-        if (vport->fc_flag & FC_RSCN_MODE) {
+        if ((vport->fc_flag & FC_RSCN_MODE) &&
+            !(vport->fc_flag & FC_NDISC_ACTIVE)) {
                 if (lpfc_rscn_payload_check(vport, did)) {
                         /* If we've already recieved a PLOGI from this NPort
                          * we don't need to try to discover it again.
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index 22843751c2c..26c67c866d1 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -559,8 +559,10 @@ lpfc_hb_timeout(unsigned long ptr)
                 phba->pport->work_port_events |= WORKER_HB_TMO;
         spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
 
+        spin_lock_irqsave(&phba->hbalock, iflag);
         if (phba->work_wait)
                 wake_up(phba->work_wait);
+        spin_unlock_irqrestore(&phba->hbalock, iflag);
         return;
 }
 
@@ -714,12 +716,10 @@ lpfc_handle_eratt(struct lpfc_hba *phba)
         struct lpfc_vport *vport = phba->pport;
         struct lpfc_sli   *psli = &phba->sli;
         struct lpfc_sli_ring  *pring;
-        struct lpfc_vport **vports;
         uint32_t event_data;
         unsigned long temperature;
         struct temp_event temp_event_data;
         struct Scsi_Host  *shost;
-        int i;
 
         /* If the pci channel is offline, ignore possible errors,
          * since we cannot communicate with the pci card anyway. */
@@ -737,17 +737,7 @@ lpfc_handle_eratt(struct lpfc_hba *phba)
                                 "Data: x%x x%x x%x\n",
                                 phba->work_hs,
                                 phba->work_status[0], phba->work_status[1]);
-                vports = lpfc_create_vport_work_array(phba);
-                if (vports != NULL)
-                        for(i = 0;
-                            i <= phba->max_vpi && vports[i] != NULL;
-                            i++){
-                                shost = lpfc_shost_from_vport(vports[i]);
-                                spin_lock_irq(shost->host_lock);
-                                vports[i]->fc_flag |= FC_ESTABLISH_LINK;
-                                spin_unlock_irq(shost->host_lock);
-                        }
-                lpfc_destroy_vport_work_array(phba, vports);
+
                 spin_lock_irq(&phba->hbalock);
                 psli->sli_flag &= ~LPFC_SLI2_ACTIVE;
                 spin_unlock_irq(&phba->hbalock);
@@ -761,7 +751,6 @@ lpfc_handle_eratt(struct lpfc_hba *phba)
                 pring = &psli->ring[psli->fcp_ring];
                 lpfc_sli_abort_iocb_ring(phba, pring);
 
-
                 /*
                  * There was a firmware error.  Take the hba offline and then
                  * attempt to restart it.
@@ -770,7 +759,6 @@ lpfc_handle_eratt(struct lpfc_hba *phba)
                 lpfc_offline(phba);
                 lpfc_sli_brdrestart(phba);
                 if (lpfc_online(phba) == 0) {   /* Initialize the HBA */
-                        mod_timer(&phba->fc_estabtmo, jiffies + HZ * 60);
                         lpfc_unblock_mgmt_io(phba);
                         return;
                 }
@@ -1454,6 +1442,13 @@ lpfc_cleanup(struct lpfc_vport *vport)
                         NLP_SET_FREE_REQ(ndlp);
                 spin_unlock_irq(&phba->ndlp_lock);
 
+                if (vport->port_type != LPFC_PHYSICAL_PORT &&
+                    ndlp->nlp_DID == Fabric_DID) {
+                        /* Just free up ndlp with Fabric_DID for vports */
+                        lpfc_nlp_put(ndlp);
+                        continue;
+                }
+
                 if (ndlp->nlp_type & NLP_FABRIC)
                         lpfc_disc_state_machine(vport, ndlp, NULL,
                                         NLP_EVT_DEVICE_RECOVERY);
@@ -1491,31 +1486,6 @@ lpfc_cleanup(struct lpfc_vport *vport)
         return;
 }
 
-static void
-lpfc_establish_link_tmo(unsigned long ptr)
-{
-        struct lpfc_hba   *phba = (struct lpfc_hba *) ptr;
-        struct lpfc_vport **vports;
-        unsigned long iflag;
-        int i;
-
-        /* Re-establishing Link, timer expired */
-        lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
-                        "1300 Re-establishing Link, timer expired "
-                        "Data: x%x x%x\n",
-                        phba->pport->fc_flag, phba->pport->port_state);
-        vports = lpfc_create_vport_work_array(phba);
-        if (vports != NULL)
-                for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
-                        struct Scsi_Host *shost;
-                        shost = lpfc_shost_from_vport(vports[i]);
-                        spin_lock_irqsave(shost->host_lock, iflag);
-                        vports[i]->fc_flag &= ~FC_ESTABLISH_LINK;
-                        spin_unlock_irqrestore(shost->host_lock, iflag);
-                }
-        lpfc_destroy_vport_work_array(phba, vports);
-}
-
 void
 lpfc_stop_vport_timers(struct lpfc_vport *vport)
 {
@@ -1529,7 +1499,6 @@ static void
 lpfc_stop_phba_timers(struct lpfc_hba *phba)
 {
         del_timer_sync(&phba->fcp_poll_timer);
-        del_timer_sync(&phba->fc_estabtmo);
         lpfc_stop_vport_timers(phba->pport);
         del_timer_sync(&phba->sli.mbox_tmo);
         del_timer_sync(&phba->fabric_block_timer);
@@ -2005,10 +1974,6 @@ lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
         phba->max_vpi = LPFC_MAX_VPI;
 
         /* Initialize timers used by driver */
-        init_timer(&phba->fc_estabtmo);
-        phba->fc_estabtmo.function = lpfc_establish_link_tmo;
-        phba->fc_estabtmo.data = (unsigned long)phba;
-
         init_timer(&phba->hb_tmofunc);
         phba->hb_tmofunc.function = lpfc_hb_timeout;
         phba->hb_tmofunc.data = (unsigned long)phba;
@@ -2416,11 +2381,6 @@ static pci_ers_result_t lpfc_io_slot_reset(struct pci_dev *pdev)
 
         pci_set_master(pdev);
 
-        /* Re-establishing Link */
-        spin_lock_irq(shost->host_lock);
-        phba->pport->fc_flag |= FC_ESTABLISH_LINK;
-        spin_unlock_irq(shost->host_lock);
-
         spin_lock_irq(&phba->hbalock);
         psli->sli_flag &= ~LPFC_SLI2_ACTIVE;
         spin_unlock_irq(&phba->hbalock);
@@ -2445,9 +2405,7 @@ static void lpfc_io_resume(struct pci_dev *pdev)
         struct Scsi_Host *shost = pci_get_drvdata(pdev);
         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
 
-        if (lpfc_online(phba) == 0) {
-                mod_timer(&phba->fc_estabtmo, jiffies + HZ * 60);
-        }
+        lpfc_online(phba);
 }
 
 static struct pci_device_id lpfc_id_table[] = {
diff --git a/drivers/scsi/lpfc/lpfc_nportdisc.c b/drivers/scsi/lpfc/lpfc_nportdisc.c
index d513813f669..d08c4c89074 100644
--- a/drivers/scsi/lpfc/lpfc_nportdisc.c
+++ b/drivers/scsi/lpfc/lpfc_nportdisc.c
@@ -451,7 +451,7 @@ lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
                         spin_unlock_irq(shost->host_lock);
 
                         if ((ndlp->nlp_flag & NLP_ADISC_SND) &&
-                                (vport->num_disc_nodes)) {
+                            (vport->num_disc_nodes)) {
                                 /* Check to see if there are more
                                  * ADISCs to be sent
                                  */
@@ -469,20 +469,23 @@ lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
                                         lpfc_end_rscn(vport);
                                 }
                         }
-                        else if (vport->num_disc_nodes) {
-                                /* Check to see if there are more
-                                 * PLOGIs to be sent
-                                 */
-                                lpfc_more_plogi(vport);
-
-                                if (vport->num_disc_nodes == 0) {
-                                        spin_lock_irq(shost->host_lock);
-                                        vport->fc_flag &= ~FC_NDISC_ACTIVE;
-                                        spin_unlock_irq(shost->host_lock);
-                                        lpfc_can_disctmo(vport);
-                                        lpfc_end_rscn(vport);
-                                }
-                        }
+                }
+        } else if ((ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) &&
+                   (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
+                   (vport->num_disc_nodes)) {
+                spin_lock_irq(shost->host_lock);
+                ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
+                spin_unlock_irq(shost->host_lock);
+                /* Check to see if there are more
+                 * PLOGIs to be sent
+                 */
+                lpfc_more_plogi(vport);
+                if (vport->num_disc_nodes == 0) {
+                        spin_lock_irq(shost->host_lock);
+                        vport->fc_flag &= ~FC_NDISC_ACTIVE;
+                        spin_unlock_irq(shost->host_lock);
+                        lpfc_can_disctmo(vport);
+                        lpfc_end_rscn(vport);
                 }
         }
 
@@ -869,8 +872,11 @@ lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
 
         lp = (uint32_t *) prsp->virt;
         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
-        if (wwn_to_u64(sp->portName.u.wwn) == 0 ||
-            wwn_to_u64(sp->nodeName.u.wwn) == 0) {
+
+        /* Some switches have FDMI servers returning 0 for WWN */
+        if ((ndlp->nlp_DID != FDMI_DID) &&
+                (wwn_to_u64(sp->portName.u.wwn) == 0 ||
+                wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
                                  "0142 PLOGI RSP: Invalid WWN.\n");
                 goto out;
diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c
index 70255c11d3a..6df8bc003a8 100644
--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -578,14 +578,14 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
                             lpfc_cmd->result == IOERR_NO_RESOURCES ||
                             lpfc_cmd->result == RJT_LOGIN_REQUIRED) {
                                 cmd->result = ScsiResult(DID_REQUEUE, 0);
-                        break;
-                } /* else: fall through */
+                                break;
+                        } /* else: fall through */
                 default:
                         cmd->result = ScsiResult(DID_ERROR, 0);
                         break;
                 }
 
-                if ((pnode == NULL )
+                if (!pnode || !NLP_CHK_NODE_ACT(pnode)
                     || (pnode->nlp_state != NLP_STE_MAPPED_NODE))
                         cmd->result = ScsiResult(DID_BUS_BUSY, SAM_STAT_BUSY);
         } else {
@@ -626,7 +626,7 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
         if (!result)
                 lpfc_rampup_queue_depth(vport, sdev);
 
-        if (!result && pnode != NULL &&
+        if (!result && pnode && NLP_CHK_NODE_ACT(pnode) &&
            ((jiffies - pnode->last_ramp_up_time) >
                 LPFC_Q_RAMP_UP_INTERVAL * HZ) &&
            ((jiffies - pnode->last_q_full_time) >
@@ -654,7 +654,8 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
          * Check for queue full.  If the lun is reporting queue full, then
          * back off the lun queue depth to prevent target overloads.
          */
-        if (result == SAM_STAT_TASK_SET_FULL && pnode != NULL) {
+        if (result == SAM_STAT_TASK_SET_FULL && pnode &&
+            NLP_CHK_NODE_ACT(pnode)) {
                 pnode->last_q_full_time = jiffies;
 
                 shost_for_each_device(tmp_sdev, sdev->host) {
@@ -704,6 +705,9 @@ lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
         int datadir = scsi_cmnd->sc_data_direction;
         char tag[2];
 
+        if (!pnode || !NLP_CHK_NODE_ACT(pnode))
+                return;
+
         lpfc_cmd->fcp_rsp->rspSnsLen = 0;
         /* clear task management bits */
         lpfc_cmd->fcp_cmnd->fcpCntl2 = 0;
@@ -785,9 +789,9 @@ lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_vport *vport,
         struct lpfc_rport_data *rdata = lpfc_cmd->rdata;
         struct lpfc_nodelist *ndlp = rdata->pnode;
 
-        if ((ndlp == NULL) || (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) {
+        if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) ||
+            ndlp->nlp_state != NLP_STE_MAPPED_NODE)
                 return 0;
-        }
 
         piocbq = &(lpfc_cmd->cur_iocbq);
         piocbq->vport = vport;
@@ -842,7 +846,7 @@ lpfc_scsi_tgt_reset(struct lpfc_scsi_buf *lpfc_cmd, struct lpfc_vport *vport,
         struct lpfc_iocbq *iocbqrsp;
         int ret;
 
-        if (!rdata->pnode)
+        if (!rdata->pnode || !NLP_CHK_NODE_ACT(rdata->pnode))
                 return FAILED;
 
         lpfc_cmd->rdata = rdata;
@@ -959,7 +963,7 @@ lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
          * Catch race where our node has transitioned, but the
          * transport is still transitioning.
          */
-        if (!ndlp) {
+        if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
                 cmnd->result = ScsiResult(DID_BUS_BUSY, 0);
                 goto out_fail_command;
         }
@@ -1146,7 +1150,7 @@ lpfc_device_reset_handler(struct scsi_cmnd *cmnd)
          * target is rediscovered or devloss timeout expires.
          */
         while (1) {
-                if (!pnode)
+                if (!pnode || !NLP_CHK_NODE_ACT(pnode))
                         goto out;
 
                 if (pnode->nlp_state != NLP_STE_MAPPED_NODE) {
@@ -1162,7 +1166,7 @@ lpfc_device_reset_handler(struct scsi_cmnd *cmnd)
                                 goto out;
                         }
                         pnode = rdata->pnode;
-                        if (!pnode)
+                        if (!pnode || !NLP_CHK_NODE_ACT(pnode))
                                 goto out;
                 }
                 if (pnode->nlp_state == NLP_STE_MAPPED_NODE)
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index fc0d9501aba..c71b9a57777 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -2648,7 +2648,6 @@ lpfc_mbox_timeout_handler(struct lpfc_hba *phba)
         spin_unlock_irq(&phba->pport->work_port_lock);
         spin_lock_irq(&phba->hbalock);
         phba->link_state = LPFC_LINK_UNKNOWN;
-        phba->pport->fc_flag |= FC_ESTABLISH_LINK;
         psli->sli_flag &= ~LPFC_SLI2_ACTIVE;
         spin_unlock_irq(&phba->hbalock);
 
@@ -2669,8 +2668,7 @@ lpfc_mbox_timeout_handler(struct lpfc_hba *phba)
         lpfc_offline_prep(phba);
         lpfc_offline(phba);
         lpfc_sli_brdrestart(phba);
-        if (lpfc_online(phba) == 0)             /* Initialize the HBA */
-                mod_timer(&phba->fc_estabtmo, jiffies + HZ * 60);
+        lpfc_online(phba);
         lpfc_unblock_mgmt_io(phba);
         return;
 }
@@ -2687,28 +2685,41 @@ lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
         unsigned long drvr_flag = 0;
         volatile uint32_t word0, ldata;
         void __iomem *to_slim;
+        int processing_queue = 0;
+
+        spin_lock_irqsave(&phba->hbalock, drvr_flag);
+        if (!pmbox) {
+                /* processing mbox queue from intr_handler */
+                processing_queue = 1;
+                phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
+                pmbox = lpfc_mbox_get(phba);
+                if (!pmbox) {
+                        spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
+                        return MBX_SUCCESS;
+                }
+        }
 
         if (pmbox->mbox_cmpl && pmbox->mbox_cmpl != lpfc_sli_def_mbox_cmpl &&
                 pmbox->mbox_cmpl != lpfc_sli_wake_mbox_wait) {
                 if(!pmbox->vport) {
+                        spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
                         lpfc_printf_log(phba, KERN_ERR,
                                         LOG_MBOX | LOG_VPORT,
                                         "1806 Mbox x%x failed. No vport\n",
                                         pmbox->mb.mbxCommand);
                         dump_stack();
-                        return MBX_NOT_FINISHED;
+                        goto out_not_finished;
                 }
         }
 
-
         /* If the PCI channel is in offline state, do not post mbox. */
-        if (unlikely(pci_channel_offline(phba->pcidev)))
-                return MBX_NOT_FINISHED;
+        if (unlikely(pci_channel_offline(phba->pcidev))) {
+                spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
+                goto out_not_finished;
+        }
 
-        spin_lock_irqsave(&phba->hbalock, drvr_flag);
         psli = &phba->sli;
 
-
         mb = &pmbox->mb;
         status = MBX_SUCCESS;
 
@@ -2717,14 +2728,14 @@ lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
 
                 /* Mbox command <mbxCommand> cannot issue */
                 LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag);
-                return MBX_NOT_FINISHED;
+                goto out_not_finished;
         }
 
         if (mb->mbxCommand != MBX_KILL_BOARD && flag & MBX_NOWAIT &&
             !(readl(phba->HCregaddr) & HC_MBINT_ENA)) {
                 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
                 LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag);
-                return MBX_NOT_FINISHED;
+                goto out_not_finished;
         }
 
         if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) {
@@ -2738,14 +2749,14 @@ lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
 
                         /* Mbox command <mbxCommand> cannot issue */
                         LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag);
-                        return MBX_NOT_FINISHED;
+                        goto out_not_finished;
                 }
 
                 if (!(psli->sli_flag & LPFC_SLI2_ACTIVE)) {
                         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
                         /* Mbox command <mbxCommand> cannot issue */
                         LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag);
-                        return MBX_NOT_FINISHED;
+                        goto out_not_finished;
                 }
 
                 /* Another mailbox command is still being processed, queue this
@@ -2792,7 +2803,7 @@ lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
                         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
                         /* Mbox command <mbxCommand> cannot issue */
                         LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag);
-                        return MBX_NOT_FINISHED;
+                        goto out_not_finished;
                 }
                 /* timeout active mbox command */
                 mod_timer(&psli->mbox_tmo, (jiffies +
@@ -2900,7 +2911,7 @@ lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
                                 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
                                 spin_unlock_irqrestore(&phba->hbalock,
                                                        drvr_flag);
-                                return MBX_NOT_FINISHED;
+                                goto out_not_finished;
                         }
 
                         /* Check if we took a mbox interrupt while we were
@@ -2967,6 +2978,13 @@ lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
 
         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
         return status;
+
+out_not_finished:
+        if (processing_queue) {
+                pmbox->mb.mbxStatus = MBX_NOT_FINISHED;
+                lpfc_mbox_cmpl_put(phba, pmbox);
+        }
+        return MBX_NOT_FINISHED;
 }
 
 /*
@@ -3613,6 +3631,16 @@ lpfc_sli_abort_els_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
                                 irsp->ulpStatus, irsp->un.ulpWord[4]);
 
                 /*
+                 *  If the iocb is not found in Firmware queue the iocb
+                 *  might have completed already. Do not free it again.
+                 */
+                if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
+                        (irsp->un.ulpWord[4] == IOERR_NO_XRI)) {
+                        spin_unlock_irq(&phba->hbalock);
+                        lpfc_sli_release_iocbq(phba, cmdiocb);
+                        return;
+                }
+                /*
                  * make sure we have the right iocbq before taking it
                  * off the txcmplq and try to call completion routine.
                  */
@@ -4237,10 +4265,15 @@ lpfc_intr_handler(int irq, void *dev_id)
                                                 pmb->context1 = mp;
                                                 pmb->context2 = ndlp;
                                                 pmb->vport = vport;
-                                                spin_lock(&phba->hbalock);
-                                                phba->sli.sli_flag &=
-                                                        ~LPFC_SLI_MBOX_ACTIVE;
-                                                spin_unlock(&phba->hbalock);
+                                                rc = lpfc_sli_issue_mbox(phba,
+                                                                pmb,
+                                                                MBX_NOWAIT);
+                                                if (rc != MBX_BUSY)
+                                                        lpfc_printf_log(phba,
+                                                        KERN_ERR,
+                                                        LOG_MBOX | LOG_SLI,
+                                                        "0306 rc should have"
+                                                        "been MBX_BUSY");
                                                 goto send_current_mbox;
                                         }
                                 }
@@ -4253,22 +4286,16 @@ lpfc_intr_handler(int irq, void *dev_id)
                 }
                 if ((work_ha_copy & HA_MBATT) &&
                     (phba->sli.mbox_active == NULL)) {
-send_next_mbox:
-                        spin_lock(&phba->hbalock);
-                        phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
-                        pmb = lpfc_mbox_get(phba);
-                        spin_unlock(&phba->hbalock);
 send_current_mbox:
                         /* Process next mailbox command if there is one */
-                        if (pmb != NULL) {
-                                rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
-                                if (rc == MBX_NOT_FINISHED) {
-                                        pmb->mb.mbxStatus = MBX_NOT_FINISHED;
-                                        lpfc_mbox_cmpl_put(phba, pmb);
-                                        goto send_next_mbox;
-                                }
-                        }
-
+                        do {
+                                rc = lpfc_sli_issue_mbox(phba, NULL,
+                                                         MBX_NOWAIT);
+                        } while (rc == MBX_NOT_FINISHED);
+                        if (rc != MBX_SUCCESS)
+                                lpfc_printf_log(phba, KERN_ERR, LOG_MBOX |
+                                                LOG_SLI, "0349 rc should be "
+                                                "MBX_SUCCESS");
                 }
 
                 spin_lock(&phba->hbalock);
diff --git a/drivers/scsi/lpfc/lpfc_vport.c b/drivers/scsi/lpfc/lpfc_vport.c
index 86d05beb00b..6feaf59b0b1 100644
--- a/drivers/scsi/lpfc/lpfc_vport.c
+++ b/drivers/scsi/lpfc/lpfc_vport.c
@@ -538,7 +538,8 @@ lpfc_vport_delete(struct fc_vport *fc_vport)
         /* Otherwise, we will perform fabric logo as needed */
         if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
             ndlp->nlp_state == NLP_STE_UNMAPPED_NODE &&
-            phba->link_state >= LPFC_LINK_UP) {
+            phba->link_state >= LPFC_LINK_UP &&
+            phba->fc_topology != TOPOLOGY_LOOP) {
                 if (vport->cfg_enable_da_id) {
                         timeout = msecs_to_jiffies(phba->fc_ratov * 2000);
                         if (!lpfc_ns_cmd(vport, SLI_CTNS_DA_ID, 0, 0))