*/
spin_lock_irq(&phba->hbalock);
phba->hba_flag &= ~FCF_DISC_INPROGRESS;
- phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
+ phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV |
+ FCF_DEAD_FOVER |
+ FCF_CVL_FOVER);
spin_unlock_irq(&phba->hbalock);
}
__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;
+ phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV |
+ FCF_DEAD_FOVER |
+ FCF_CVL_FOVER);
spin_unlock_irqrestore(&phba->hbalock, iflags);
goto out;
}
* Update on failover FCF record only if it's in FCF fast-failover
* period; otherwise, update on current FCF record.
*/
- if (phba->fcf.fcf_flag & FCF_REDISC_FOV) {
- /* Fast FCF failover only to the same fabric name */
- if (lpfc_fab_name_match(phba->fcf.current_rec.fabric_name,
- new_fcf_record))
- fcf_rec = &phba->fcf.failover_rec;
- else
- goto read_next_fcf;
- } else
+ if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
+ fcf_rec = &phba->fcf.failover_rec;
+ else
fcf_rec = &phba->fcf.current_rec;
if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
* If the new hba FCF record has lower priority value
* than the driver FCF record, use the new record.
*/
- if (lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record) &&
- (new_fcf_record->fip_priority < fcf_rec->priority)) {
+ if (new_fcf_record->fip_priority < fcf_rec->priority) {
/* Choose this FCF record */
__lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
addr_mode, vlan_id, 0);
sizeof(struct lpfc_fcf_rec));
/* mark the FCF fast failover completed */
spin_lock_irqsave(&phba->hbalock, iflags);
- phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
+ phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV |
+ FCF_DEAD_FOVER |
+ FCF_CVL_FOVER);
spin_unlock_irqrestore(&phba->hbalock, iflags);
/* Register to the new FCF record */
lpfc_register_fcf(phba);
return;
/* Reset HBA FCF states after successful unregister FCF */
phba->fcf.fcf_flag = 0;
+ phba->fcf.current_rec.flag = 0;
/*
* If driver is not unloading, check if there is any other
void
__lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba)
{
- /* Clear pending FCF rediscovery wait timer */
- phba->fcf.fcf_flag &= ~FCF_REDISC_PEND;
+ /* Clear pending FCF rediscovery wait and failover in progress flags */
+ phba->fcf.fcf_flag &= ~(FCF_REDISC_PEND |
+ FCF_DEAD_FOVER |
+ FCF_CVL_FOVER);
/* Now, try to stop the timer */
del_timer(&phba->fcf.redisc_wait);
}
mempool_free(pmb, phba->mbox_mem_pool);
}
+/**
+ * lpfc_sli4_perform_vport_cvl - Perform clear virtual link on a vport
+ * @vport: pointer to vport data structure.
+ *
+ * This routine is to perform Clear Virtual Link (CVL) on a vport in
+ * response to a CVL event.
+ *
+ * Return the pointer to the ndlp with the vport if successful, otherwise
+ * return NULL.
+ **/
+static struct lpfc_nodelist *
+lpfc_sli4_perform_vport_cvl(struct lpfc_vport *vport)
+{
+ struct lpfc_nodelist *ndlp;
+ struct Scsi_Host *shost;
+ struct lpfc_hba *phba;
+
+ if (!vport)
+ return NULL;
+ ndlp = lpfc_findnode_did(vport, Fabric_DID);
+ if (!ndlp)
+ return NULL;
+ phba = vport->phba;
+ if (!phba)
+ return NULL;
+ if (phba->pport->port_state <= LPFC_FLOGI)
+ return NULL;
+ /* If virtual link is not yet instantiated ignore CVL */
+ if (vport->port_state <= LPFC_FDISC)
+ return NULL;
+ shost = lpfc_shost_from_vport(vport);
+ if (!shost)
+ return NULL;
+ lpfc_linkdown_port(vport);
+ lpfc_cleanup_pending_mbox(vport);
+ spin_lock_irq(shost->host_lock);
+ vport->fc_flag |= FC_VPORT_CVL_RCVD;
+ spin_unlock_irq(shost->host_lock);
+
+ return ndlp;
+}
+
+/**
+ * lpfc_sli4_perform_all_vport_cvl - Perform clear virtual link on all vports
+ * @vport: pointer to lpfc hba data structure.
+ *
+ * This routine is to perform Clear Virtual Link (CVL) on all vports in
+ * response to a FCF dead event.
+ **/
+static void
+lpfc_sli4_perform_all_vport_cvl(struct lpfc_hba *phba)
+{
+ struct lpfc_vport **vports;
+ int i;
+
+ vports = lpfc_create_vport_work_array(phba);
+ if (vports)
+ for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
+ lpfc_sli4_perform_vport_cvl(vports[i]);
+ lpfc_destroy_vport_work_array(phba, vports);
+}
+
/**
* lpfc_sli4_async_fcoe_evt - Process the asynchronous fcoe event
* @phba: pointer to lpfc hba data structure.
struct lpfc_vport *vport;
struct lpfc_nodelist *ndlp;
struct Scsi_Host *shost;
- uint32_t link_state;
int active_vlink_present;
struct lpfc_vport **vports;
int i;
/* If the event is not for currently used fcf do nothing */
if (phba->fcf.current_rec.fcf_indx != acqe_fcoe->index)
break;
- /*
- * Currently, driver support only one FCF - so treat this as
- * a link down, but save the link state because we don't want
- * it to be changed to Link Down unless it is already down.
+ /* We request port to rediscover the entire FCF table for
+ * a fast recovery from case that the current FCF record
+ * is no longer valid if the last CVL event hasn't already
+ * triggered process.
*/
- link_state = phba->link_state;
- lpfc_linkdown(phba);
- phba->link_state = link_state;
- /* Unregister FCF if no devices connected to it */
- lpfc_unregister_unused_fcf(phba);
+ spin_lock_irq(&phba->hbalock);
+ if (phba->fcf.fcf_flag & FCF_CVL_FOVER) {
+ spin_unlock_irq(&phba->hbalock);
+ break;
+ }
+ /* Mark the fast failover process in progress */
+ phba->fcf.fcf_flag |= FCF_DEAD_FOVER;
+ spin_unlock_irq(&phba->hbalock);
+ rc = lpfc_sli4_redisc_fcf_table(phba);
+ if (rc) {
+ spin_lock_irq(&phba->hbalock);
+ phba->fcf.fcf_flag &= ~FCF_DEAD_FOVER;
+ spin_unlock_irq(&phba->hbalock);
+ /*
+ * Last resort will fail over by treating this
+ * as a link down to FCF registration.
+ */
+ lpfc_sli4_fcf_dead_failthrough(phba);
+ } else
+ /* Handling fast FCF failover to a DEAD FCF event
+ * is considered equalivant to receiving CVL to all
+ * vports.
+ */
+ lpfc_sli4_perform_all_vport_cvl(phba);
break;
case LPFC_FCOE_EVENT_TYPE_CVL:
lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
" tag 0x%x\n", acqe_fcoe->index, acqe_fcoe->event_tag);
vport = lpfc_find_vport_by_vpid(phba,
acqe_fcoe->index - phba->vpi_base);
- if (!vport)
- break;
- ndlp = lpfc_findnode_did(vport, Fabric_DID);
+ ndlp = lpfc_sli4_perform_vport_cvl(vport);
if (!ndlp)
break;
- shost = lpfc_shost_from_vport(vport);
- if (phba->pport->port_state <= LPFC_FLOGI)
- break;
- /* If virtual link is not yet instantiated ignore CVL */
- if (vport->port_state <= LPFC_FDISC)
- break;
-
- lpfc_linkdown_port(vport);
- lpfc_cleanup_pending_mbox(vport);
- spin_lock_irq(shost->host_lock);
- vport->fc_flag |= FC_VPORT_CVL_RCVD;
- spin_unlock_irq(shost->host_lock);
active_vlink_present = 0;
vports = lpfc_create_vport_work_array(phba);
* re-instantiate the Vlink using FDISC.
*/
mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
+ shost = lpfc_shost_from_vport(vport);
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= NLP_DELAY_TMO;
spin_unlock_irq(shost->host_lock);
* Otherwise, we request port to rediscover
* the entire FCF table for a fast recovery
* from possible case that the current FCF
- * is no longer valid.
+ * is no longer valid if the FCF_DEAD event
+ * hasn't already triggered process.
*/
+ spin_lock_irq(&phba->hbalock);
+ if (phba->fcf.fcf_flag & FCF_DEAD_FOVER) {
+ spin_unlock_irq(&phba->hbalock);
+ break;
+ }
+ /* Mark the fast failover process in progress */
+ phba->fcf.fcf_flag |= FCF_CVL_FOVER;
+ spin_unlock_irq(&phba->hbalock);
rc = lpfc_sli4_redisc_fcf_table(phba);
- if (rc)
+ if (rc) {
+ spin_lock_irq(&phba->hbalock);
+ phba->fcf.fcf_flag &= ~FCF_CVL_FOVER;
+ spin_unlock_irq(&phba->hbalock);
/*
* Last resort will be re-try on the
* the current registered FCF entry.
*/
lpfc_retry_pport_discovery(phba);
+ }
}
break;
default:
/* Post receive buffers to the device */
lpfc_sli4_rb_setup(phba);
+ /* Reset HBA FCF states after HBA reset */
+ phba->fcf.fcf_flag = 0;
+ phba->fcf.current_rec.flag = 0;
+
/* Start the ELS watchdog timer */
mod_timer(&vport->els_tmofunc,
jiffies + HZ * (phba->fc_ratov * 2));
"2746 Requesting for FCF rediscovery failed "
"status x%x add_status x%x\n",
shdr_status, shdr_add_status);
- /*
- * Request failed, last resort to re-try current
- * registered FCF entry
- */
- lpfc_retry_pport_discovery(phba);
+ if (phba->fcf.fcf_flag & FCF_CVL_FOVER) {
+ spin_lock_irq(&phba->hbalock);
+ phba->fcf.fcf_flag &= ~FCF_CVL_FOVER;
+ spin_unlock_irq(&phba->hbalock);
+ /*
+ * CVL event triggered FCF rediscover request failed,
+ * last resort to re-try current registered FCF entry.
+ */
+ lpfc_retry_pport_discovery(phba);
+ } else {
+ spin_lock_irq(&phba->hbalock);
+ phba->fcf.fcf_flag &= ~FCF_DEAD_FOVER;
+ spin_unlock_irq(&phba->hbalock);
+ /*
+ * DEAD FCF event triggered FCF rediscover request
+ * failed, last resort to fail over as a link down
+ * to FCF registration.
+ */
+ lpfc_sli4_fcf_dead_failthrough(phba);
+ }
} else
/*
* Start FCF rediscovery wait timer for pending FCF
return 0;
}
+/**
+ * lpfc_sli4_fcf_dead_failthrough - Failthrough routine to fcf dead event
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This function is the failover routine as a last resort to the FCF DEAD
+ * event when driver failed to perform fast FCF failover.
+ **/
+void
+lpfc_sli4_fcf_dead_failthrough(struct lpfc_hba *phba)
+{
+ uint32_t link_state;
+
+ /*
+ * Last resort as FCF DEAD event failover will treat this as
+ * a link down, but save the link state because we don't want
+ * it to be changed to Link Down unless it is already down.
+ */
+ link_state = phba->link_state;
+ lpfc_linkdown(phba);
+ phba->link_state = link_state;
+
+ /* Unregister FCF if no devices connected to it */
+ lpfc_unregister_unused_fcf(phba);
+}
+
/**
* lpfc_sli_read_link_ste - Read region 23 to decide if link is disabled.
* @phba: pointer to lpfc hba data structure.
projects / GitHub / exynos8895 / android_kernel_samsung_universal8895.git / commitdiff