[SCSI] lpfc 8.3.18: FC/FCoE Discovery fixes

FC/FCoE Discovery fixes:

- Call the lpfc_drain_txq only for SLI4 hba
- In lpfc_cmpl_els_fdisc, fix code path that does not free IOCB.
- Treated firmware matching FCF property with different index as error
- Propagate error returns from lpfc_issue_els_flogi()
- Refactored lpfc_unregister_unused_fcf() to create a post
  lpfc_dev_loss_tmo handler call for SLI-4 devices. Allows checking of
  fcf after last ndlp released so that fcf can be released if no longer
  in use.
- Replaced individual FCF_XXXX_DISC flag clearing in lieu of aggregate
  FCF_DISCOVERY flag upon succesful completion of flogi.
- Correct setting of altBbCredit value in sparams to correct issue with
  logins with remote loop-based devices.

Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c
index e6ca12f..b16311d 100644 (file)
--- a/drivers/scsi/lpfc/lpfc_els.c
+++ b/drivers/scsi/lpfc/lpfc_els.c
@@ -523,12 +523,6 @@ lpfc_cmpl_els_flogi_fabric(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
                spin_lock_irq(shost->host_lock);
                vport->fc_flag |= FC_PUBLIC_LOOP;
                spin_unlock_irq(shost->host_lock);
-       } else {
-               /*
-                * If we are a N-port connected to a Fabric, fixup sparam's so
-                * logins to devices on remote loops work.
-                */
-               vport->fc_sparam.cmn.altBbCredit = 1;
        }
 
        vport->fc_myDID = irsp->un.ulpWord[4] & Mask_DID;
@@ -1175,12 +1169,13 @@ lpfc_initial_flogi(struct lpfc_vport *vport)
                        return 0;
        }
 
-       if (lpfc_issue_els_flogi(vport, ndlp, 0))
+       if (lpfc_issue_els_flogi(vport, ndlp, 0)) {
                /* This decrement of reference count to node shall kick off
                 * the release of the node.
                 */
                lpfc_nlp_put(ndlp);
-
+               return 0;
+       }
        return 1;
 }
 
@@ -1645,6 +1640,13 @@ lpfc_issue_els_plogi(struct lpfc_vport *vport, uint32_t did, uint8_t retry)
        memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
        sp = (struct serv_parm *) pcmd;
 
+       /*
+        * If we are a N-port connected to a Fabric, fix-up paramm's so logins
+        * to device on remote loops work.
+        */
+       if ((vport->fc_flag & FC_FABRIC) && !(vport->fc_flag & FC_PUBLIC_LOOP))
+               sp->cmn.altBbCredit = 1;
+
        if (sp->cmn.fcphLow < FC_PH_4_3)
                sp->cmn.fcphLow = FC_PH_4_3;
 
@@ -6452,7 +6454,7 @@ lpfc_cmpl_els_fdisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
                 * to update the MAC address.
                 */
                lpfc_register_new_vport(phba, vport, ndlp);
-               return ;
+               goto out;
        }
 
        if (vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI)

diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c
index a345dde..0788bf6 100644 (file)
--- a/drivers/scsi/lpfc/lpfc_hbadisc.c
+++ b/drivers/scsi/lpfc/lpfc_hbadisc.c
@@ -1803,6 +1803,16 @@ lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
                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)) {
+                       if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) !=
+                           phba->fcf.current_rec.fcf_indx) {
+                               lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
+                                       "2862 FCF (x%x) matches property "
+                                       "of in-use FCF (x%x)\n",
+                                       bf_get(lpfc_fcf_record_fcf_index,
+                                              new_fcf_record),
+                                       phba->fcf.current_rec.fcf_indx);
+                               goto read_next_fcf;
+                       }
                        /*
                         * In case the current in-use FCF record becomes
                         * invalid/unavailable during FCF discovery that
@@ -1844,22 +1854,29 @@ lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
        if (phba->fcf.fcf_flag & FCF_IN_USE) {
                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 */
-                               __lpfc_sli4_stop_fcf_redisc_wait_timer(phba);
-                       else if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
-                               /* If in fast failover, mark it's completed */
-                               phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
-                       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,
+                       if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) ==
+                           phba->fcf.current_rec.fcf_indx) {
+                               phba->fcf.fcf_flag |= FCF_AVAILABLE;
+                               if (phba->fcf.fcf_flag & FCF_REDISC_PEND)
+                                       /* Stop FCF redisc wait timer */
+                                       __lpfc_sli4_stop_fcf_redisc_wait_timer(
+                                                                       phba);
+                               else if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
+                                       /* Fast failover, mark completed */
+                                       phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
+                               spin_unlock_irq(&phba->hbalock);
+                               lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
+                                               "2836 New FCF matches in-use "
+                                               "FCF (x%x)\n",
+                                               phba->fcf.current_rec.fcf_indx);
+                               goto out;
+                       } else
+                               lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
+                                       "2863 New FCF (x%x) matches "
+                                       "property of in-use FCF (x%x)\n",
                                        bf_get(lpfc_fcf_record_fcf_index,
-                                              new_fcf_record));
-                       goto out;
+                                              new_fcf_record),
+                                       phba->fcf.current_rec.fcf_indx);
                }
                /*
                 * Read next FCF record from HBA searching for the matching
@@ -2069,28 +2086,6 @@ read_next_fcf:
                                                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 and
-                        * the start of the first round of the roundrobin
-                        * FCF failover.
-                        */
-                       spin_lock_irq(&phba->hbalock);
-                       phba->fcf.fcf_flag &=
-                                       ~(FCF_INIT_DISC | FCF_REDISC_RRU);
-                       spin_unlock_irq(&phba->hbalock);
-                       /*
-                        * Set up the initial registered FCF index for FLOGI
-                        * round robin FCF failover
-                        */
-                       phba->fcf.fcf_rr_init_indx =
-                                       phba->fcf.current_rec.fcf_indx;
                        /* Register to the new FCF record */
                        lpfc_register_fcf(phba);
                }
@@ -3992,6 +3987,16 @@ lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
        }
 
        spin_lock_irq(&phba->hbalock);
+       /* Cleanup REG_LOGIN completions which are not yet processed */
+       list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) {
+               if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) ||
+                       (ndlp != (struct lpfc_nodelist *) mb->context2))
+                       continue;
+
+               mb->context2 = NULL;
+               mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+       }
+
        list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
                if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {

diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index 295c7dd..9a2e2c7 100644 (file)
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -2234,10 +2234,9 @@ lpfc_stop_vport_timers(struct lpfc_vport *vport)
 void
 __lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba)
 {
-       /* Clear pending FCF rediscovery wait and failover in progress flags */
-       phba->fcf.fcf_flag &= ~(FCF_REDISC_PEND |
-                               FCF_DEAD_DISC |
-                               FCF_ACVL_DISC);
+       /* Clear pending FCF rediscovery wait flag */
+       phba->fcf.fcf_flag &= ~FCF_REDISC_PEND;
+
        /* Now, try to stop the timer */
        del_timer(&phba->fcf.redisc_wait);
 }
@@ -2261,6 +2260,8 @@ lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba)
                return;
        }
        __lpfc_sli4_stop_fcf_redisc_wait_timer(phba);
+       /* Clear failover in progress flags */
+       phba->fcf.fcf_flag &= ~(FCF_DEAD_DISC | FCF_ACVL_DISC);
        spin_unlock_irq(&phba->hbalock);
 }