scsi/lpfc: Fix switching ports on Fabric causing additional fc_host rport entries

commit id: http://marc.info/?l=linux-scsi&m=134401198306327

Signed-off-by: Jerry Snitselaar <jerry.snitselaar@oracle.com>

diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c
index 9b4f92941dce585aaddbfaa401d9e3ae5d7f7312..6b36d95668c08c3a35bb64709d9b081f61b83226 100644 (file)
--- a/drivers/scsi/lpfc/lpfc_hbadisc.c
+++ b/drivers/scsi/lpfc/lpfc_hbadisc.c
@@ -123,6 +123,10 @@ lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
                "rport devlosscb: sid:x%x did:x%x flg:x%x",
                ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 
+       lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
+                        "3181 dev_loss_callbk x%06x, rport %p flg x%x\n",
+                        ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag);
+
        /* Don't defer this if we are in the process of deleting the vport
         * or unloading the driver. The unload will cleanup the node
         * appropriately we just need to cleanup the ndlp rport info here.
@@ -142,6 +146,15 @@ lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
        if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
                return;
 
+       if (ndlp->nlp_type & NLP_FABRIC) {
+
+               /* If the WWPN of the rport and ndlp don't match, ignore it */
+               if (rport->port_name != wwn_to_u64(ndlp->nlp_portname.u.wwn)) {
+                       put_device(&rport->dev);
+                       return;
+               }
+       }
+
        evtp = &ndlp->dev_loss_evt;
 
        if (!list_empty(&evtp->evt_listp))
@@ -202,6 +215,10 @@ lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
                "rport devlosstmo:did:x%x type:x%x id:x%x",
                ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
 
+       lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
+                        "3182 dev_loss_tmo_handler x%06x, rport %p flg x%x\n",
+                        ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag);
+
        /* Don't defer this if we are in the process of deleting the vport
         * or unloading the driver. The unload will cleanup the node
         * appropriately we just need to cleanup the ndlp rport info here.
@@ -3834,6 +3851,10 @@ lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
        if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
                fc_remote_port_rolechg(rport, rport_ids.roles);
 
+       lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
+                        "3183 rport register x%06x, rport %p role x%x\n",
+                        ndlp->nlp_DID, rport, rport_ids.roles);
+
        if ((rport->scsi_target_id != -1) &&
            (rport->scsi_target_id < LPFC_MAX_TARGET)) {
                ndlp->nlp_sid = rport->scsi_target_id;
@@ -3850,6 +3871,10 @@ lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
                "rport delete:    did:x%x flg:x%x type x%x",
                ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
 
+       lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
+                        "3184 rport unregister x%06x, rport %p\n",
+                        ndlp->nlp_DID, rport);
+
        fc_remote_port_delete(rport);
 
        return;
@@ -5365,9 +5390,17 @@ __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
        struct lpfc_nodelist *ndlp;
 
        list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
-               if (filter(ndlp, param))
+               if (filter(ndlp, param)) {
+                       lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
+                                        "3185 FIND node filter %p DID "
+                                        "Data: x%p x%x x%x\n",
+                                        filter, ndlp, ndlp->nlp_DID,
+                                        ndlp->nlp_flag);
                        return ndlp;
+               }
        }
+       lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
+                        "3186 FIND node filter %p NOT FOUND.\n", filter);
        return NULL;
 }