diff options
author | James Smart <james.smart@emulex.com> | 2010-02-26 19:15:57 (GMT) |
---|---|---|
committer | James Bottomley <James.Bottomley@suse.de> | 2010-03-03 13:40:09 (GMT) |
commit | 0c9ab6f5cb28199ef5de84874d135ed44f64d92b (patch) | |
tree | 51140c5edce1250e0c06b5a38b540b533b092247 /drivers/scsi/lpfc/lpfc_els.c | |
parent | fc2b989be9190f3311a5ae41289828e24897a20e (diff) | |
download | linux-fsl-qoriq-0c9ab6f5cb28199ef5de84874d135ed44f64d92b.tar.xz |
[SCSI] lpfc 8.3.10: Added round robin FCF failover
- Added round robin FCF failover on initial or FCF rediscovery FLOGI failure.
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_els.c')
-rw-r--r-- | drivers/scsi/lpfc/lpfc_els.c | 91 |
1 files changed, 82 insertions, 9 deletions
diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c index a81d433..d807f36 100644 --- a/drivers/scsi/lpfc/lpfc_els.c +++ b/drivers/scsi/lpfc/lpfc_els.c @@ -771,6 +771,7 @@ lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp = cmdiocb->context1; struct lpfc_dmabuf *pcmd = cmdiocb->context2, *prsp; struct serv_parm *sp; + uint16_t fcf_index; int rc; /* Check to see if link went down during discovery */ @@ -788,6 +789,54 @@ lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, vport->port_state); if (irsp->ulpStatus) { + /* + * In case of FIP mode, perform round robin FCF failover + * due to new FCF discovery + */ + if ((phba->hba_flag & HBA_FIP_SUPPORT) && + (phba->fcf.fcf_flag & FCF_DISCOVERY)) { + lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS, + "2611 FLOGI failed on registered " + "FCF record fcf_index:%d, trying " + "to perform round robin failover\n", + phba->fcf.current_rec.fcf_indx); + fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba); + if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) { + /* + * Exhausted the eligible FCF record list, + * fail through to retry FLOGI on current + * FCF record. + */ + lpfc_printf_log(phba, KERN_WARNING, + LOG_FIP | LOG_ELS, + "2760 FLOGI exhausted FCF " + "round robin failover list, " + "retry FLOGI on the current " + "registered FCF index:%d\n", + phba->fcf.current_rec.fcf_indx); + spin_lock_irq(&phba->hbalock); + phba->fcf.fcf_flag &= ~FCF_DISCOVERY; + spin_unlock_irq(&phba->hbalock); + } else { + rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, + fcf_index); + if (rc) { + lpfc_printf_log(phba, KERN_WARNING, + LOG_FIP | LOG_ELS, + "2761 FLOGI round " + "robin FCF failover " + "read FCF failed " + "rc:x%x, fcf_index:" + "%d\n", rc, + phba->fcf.current_rec.fcf_indx); + spin_lock_irq(&phba->hbalock); + phba->fcf.fcf_flag &= ~FCF_DISCOVERY; + spin_unlock_irq(&phba->hbalock); + } else + goto out; + } + } + /* Check for retry */ if (lpfc_els_retry(phba, cmdiocb, rspiocb)) goto out; @@ -841,8 +890,18 @@ lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, else rc = lpfc_cmpl_els_flogi_nport(vport, ndlp, sp); - if (!rc) + if (!rc) { + /* Mark the FCF discovery process done */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_FIP | LOG_ELS, + "2769 FLOGI successful on FCF record: " + "current_fcf_index:x%x, terminate FCF " + "round robin failover process\n", + phba->fcf.current_rec.fcf_indx); + spin_lock_irq(&phba->hbalock); + phba->fcf.fcf_flag &= ~FCF_DISCOVERY; + spin_unlock_irq(&phba->hbalock); goto out; + } } flogifail: @@ -6075,21 +6134,18 @@ mbox_err_exit: } /** - * lpfc_retry_pport_discovery - Start timer to retry FLOGI. + * lpfc_cancel_all_vport_retry_delay_timer - Cancel all vport retry delay timer * @phba: pointer to lpfc hba data structure. * - * This routine abort all pending discovery commands and - * start a timer to retry FLOGI for the physical port - * discovery. + * This routine cancels the retry delay timers to all the vports. **/ void -lpfc_retry_pport_discovery(struct lpfc_hba *phba) +lpfc_cancel_all_vport_retry_delay_timer(struct lpfc_hba *phba) { struct lpfc_vport **vports; struct lpfc_nodelist *ndlp; - struct Scsi_Host *shost; - int i; uint32_t link_state; + int i; /* Treat this failure as linkdown for all vports */ link_state = phba->link_state; @@ -6107,13 +6163,30 @@ lpfc_retry_pport_discovery(struct lpfc_hba *phba) } lpfc_destroy_vport_work_array(phba, vports); } +} + +/** + * lpfc_retry_pport_discovery - Start timer to retry FLOGI. + * @phba: pointer to lpfc hba data structure. + * + * This routine abort all pending discovery commands and + * start a timer to retry FLOGI for the physical port + * discovery. + **/ +void +lpfc_retry_pport_discovery(struct lpfc_hba *phba) +{ + struct lpfc_nodelist *ndlp; + struct Scsi_Host *shost; + + /* Cancel the all vports retry delay retry timers */ + lpfc_cancel_all_vport_retry_delay_timer(phba); /* If fabric require FLOGI, then re-instantiate physical login */ ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); if (!ndlp) return; - shost = lpfc_shost_from_vport(phba->pport); mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ); spin_lock_irq(shost->host_lock); |