[SCSI] lpfc 8.1.4 : Fix Discovery processing for NPorts that change their NPortId on the fly

Fix Discovery processing for NPorts that change their NPortId on the fly
due to a cable swap.

Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 60 insertions, 8 deletions

diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c
index e7664a6bd251..2b227b363ae3 100644
--- a/drivers/scsi/lpfc/lpfc_hbadisc.c
+++ b/drivers/scsi/lpfc/lpfc_hbadisc.c
@@ -59,6 +59,7 @@ static void lpfc_disc_timeout_handler(struct lpfc_hba *);
 static void
 lpfc_process_nodev_timeout(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
 {
+        uint8_t *name = (uint8_t *)&ndlp->nlp_portname;
         int warn_on = 0;
 
         spin_lock_irq(phba->host->host_lock);
@@ -79,15 +80,23 @@ lpfc_process_nodev_timeout(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
 
         if (warn_on) {
                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
-                                "%d:0203 Nodev timeout on NPort x%x "
-                                "Data: x%x x%x x%x\n",
-                                phba->brd_no, ndlp->nlp_DID, ndlp->nlp_flag,
+                                "%d:0203 Nodev timeout on "
+                                "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
+                                "NPort x%x Data: x%x x%x x%x\n",
+                                phba->brd_no,
+                                *name, *(name+1), *(name+2), *(name+3),
+                                *(name+4), *(name+5), *(name+6), *(name+7),
+                                ndlp->nlp_DID, ndlp->nlp_flag,
                                 ndlp->nlp_state, ndlp->nlp_rpi);
         } else {
                 lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
-                                "%d:0204 Nodev timeout on NPort x%x "
-                                "Data: x%x x%x x%x\n",
-                                phba->brd_no, ndlp->nlp_DID, ndlp->nlp_flag,
+                                "%d:0204 Nodev timeout on "
+                                "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
+                                "NPort x%x Data: x%x x%x x%x\n",
+                                phba->brd_no,
+                                *name, *(name+1), *(name+2), *(name+3),
+                                *(name+4), *(name+5), *(name+6), *(name+7),
+                                ndlp->nlp_DID, ndlp->nlp_flag,
                                 ndlp->nlp_state, ndlp->nlp_rpi);
         }
 
@@ -945,7 +954,7 @@ lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
                 }
                 ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
                 lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
-                lpfc_issue_els_plogi(phba, ndlp, 0);
+                lpfc_issue_els_plogi(phba, NameServer_DID, 0);
                 if (phba->cfg_fdmi_on) {
                         ndlp_fdmi = mempool_alloc(phba->nlp_mem_pool,
                                                                 GFP_KERNEL);
@@ -953,7 +962,7 @@ lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
                                 lpfc_nlp_init(phba, ndlp_fdmi, FDMI_DID);
                                 ndlp_fdmi->nlp_type |= NLP_FABRIC;
                                 ndlp_fdmi->nlp_state = NLP_STE_PLOGI_ISSUE;
-                                lpfc_issue_els_plogi(phba, ndlp_fdmi, 0);
+                                lpfc_issue_els_plogi(phba, FDMI_DID, 0);
                         }
                 }
         }
@@ -2516,6 +2525,49 @@ lpfc_findnode_rpi(struct lpfc_hba * phba, uint16_t rpi)
         return NULL;
 }
 
+/*
+ * This routine looks up the ndlp  lists
+ * for the given WWPN. If WWPN found
+ * it return the node list pointer
+ * else return NULL.
+ */
+struct lpfc_nodelist *
+lpfc_findnode_wwpn(struct lpfc_hba * phba, uint32_t order,
+                   struct lpfc_name * wwpn)
+{
+        struct lpfc_nodelist *ndlp;
+        struct list_head * lists[]={&phba->fc_nlpunmap_list,
+                                    &phba->fc_nlpmap_list,
+                                    &phba->fc_npr_list,
+                                    &phba->fc_plogi_list,
+                                    &phba->fc_adisc_list,
+                                    &phba->fc_reglogin_list,
+                                    &phba->fc_prli_list};
+        uint32_t search[]={NLP_SEARCH_UNMAPPED,
+                           NLP_SEARCH_MAPPED,
+                           NLP_SEARCH_NPR,
+                           NLP_SEARCH_PLOGI,
+                           NLP_SEARCH_ADISC,
+                           NLP_SEARCH_REGLOGIN,
+                           NLP_SEARCH_PRLI};
+        int i;
+
+        spin_lock_irq(phba->host->host_lock);
+        for (i = 0; i < ARRAY_SIZE(lists); i++ ) {
+                if (!(order & search[i]))
+                        continue;
+                list_for_each_entry(ndlp, lists[i], nlp_listp) {
+                        if (memcmp(&ndlp->nlp_portname, wwpn,
+                                   sizeof(struct lpfc_name)) == 0) {
+                                spin_unlock_irq(phba->host->host_lock);
+                                return ndlp;
+                        }
+                }
+        }
+        spin_unlock_irq(phba->host->host_lock);
+        return NULL;
+}
+
 void
 lpfc_nlp_init(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
                  uint32_t did)