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[SCSI] lpfc 8.3.16: FCoE Discovery and Failover Fixes 

- Add support for re-reg'ing changed VPI w/o unregister VPI
- Copy WWN and state from old nodelist when target DID change.
- Clean up old nodelist rport and put the nodelist when target DID change.
- Clear the VFI_REGISTERED flag when UNREG_VFI completes.
- Made both checks of port_state against LPFC_FLOGI and LPFC_FDISC
  non-inclusive for ignoring CVL events.
- Added logic to stop retrying of the ongoing PLOGI and FDISC if
  transitioned back to the FCF rediscovery state in reaction to CVL.
- Removed the dependency of scanning of all the available FCF table
  entries for bulding round-robin bitmap.
- Use the lpfc_sli4_fcf_rr_read_fcf_rec() in responding to
  individual New FCF found event.

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>
This commit is contained in:
James Smart 2010-08-04 16:11:39 -04:00 committed by James Bottomley
parent bc73905abf
commit 38b92ef89b
6 changed files with 144 additions and 47 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

76
drivers/scsi/lpfc/lpfc_els.c
View File

@ -600,6 +600,14 @@ lpfc_cmpl_els_flogi_fabric(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
spin_unlock_irq(shost->host_lock);
}
} else if ((phba->sli_rev == LPFC_SLI_REV4) &&
!(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
/*
* Driver needs to re-reg VPI in order for f/w
* to update the MAC address.
*/
lpfc_register_new_vport(phba, vport, ndlp);
return 0;
}
if (phba->sli_rev < LPFC_SLI_REV4) {
@ -801,9 +809,12 @@ lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
(irsp->un.ulpWord[4] != IOERR_SLI_ABORTED)) {
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 record fcf_index(%d), status: "
"x%x/x%x, tmo:x%x, trying to perform "
"round robin failover\n",
phba->fcf.current_rec.fcf_indx,
irsp->ulpStatus, irsp->un.ulpWord[4],
irsp->ulpTimeout);
fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) {
/*
@ -841,6 +852,12 @@ lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
}
}
/* FLOGI failure */
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"2858 FLOGI failure Status:x%x/x%x TMO:x%x\n",
irsp->ulpStatus, irsp->un.ulpWord[4],
irsp->ulpTimeout);
/* Check for retry */
if (lpfc_els_retry(phba, cmdiocb, rspiocb))
goto out;
@ -1291,6 +1308,8 @@ lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp,
struct serv_parm *sp;
uint8_t name[sizeof(struct lpfc_name)];
uint32_t rc, keepDID = 0;
int put_node;
int put_rport;
/* Fabric nodes can have the same WWPN so we don't bother searching
* by WWPN. Just return the ndlp that was given to us.
@ -1379,6 +1398,28 @@ lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp,
/* Two ndlps cannot have the same did */
ndlp->nlp_DID = keepDID;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
/* Since we are swapping the ndlp passed in with the new one
* and the did has already been swapped, copy over the
* state and names.
*/
memcpy(&new_ndlp->nlp_portname, &ndlp->nlp_portname,
sizeof(struct lpfc_name));
memcpy(&new_ndlp->nlp_nodename, &ndlp->nlp_nodename,
sizeof(struct lpfc_name));
new_ndlp->nlp_state = ndlp->nlp_state;
/* Fix up the rport accordingly */
rport = ndlp->rport;
if (rport) {
rdata = rport->dd_data;
put_node = rdata->pnode != NULL;
put_rport = ndlp->rport != NULL;
rdata->pnode = NULL;
ndlp->rport = NULL;
if (put_node)
lpfc_nlp_put(ndlp);
if (put_rport)
put_device(&rport->dev);
}
}
return new_ndlp;
}
@ -2880,6 +2921,17 @@ lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
retry = 0;
if (retry) {
if ((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_FDISC)) {
/* Stop retrying PLOGI and FDISC if in FCF discovery */
if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"2849 Stop retry ELS command "
"x%x to remote NPORT x%x, "
"Data: x%x x%x\n", cmd, did,
cmdiocb->retry, delay);
return 0;
}
}
/* Retry ELS command <elsCmd> to remote NPORT <did> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
@ -6076,8 +6128,12 @@ lpfc_cmpl_reg_new_vport(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
if (mb->mbxStatus) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
"0915 Register VPI failed: 0x%x\n",
mb->mbxStatus);
"0915 Register VPI failed : Status: x%x"
" upd bit: x%x \n", mb->mbxStatus,
mb->un.varRegVpi.upd);
if (phba->sli_rev == LPFC_SLI_REV4 &&
mb->un.varRegVpi.upd)
goto mbox_err_exit ;
switch (mb->mbxStatus) {
case 0x11: /* unsupported feature */
@ -6142,7 +6198,7 @@ lpfc_cmpl_reg_new_vport(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
} else
lpfc_do_scr_ns_plogi(phba, vport);
}
mbox_err_exit:
/* Now, we decrement the ndlp reference count held for this
* callback function
*/
@ -6387,6 +6443,14 @@ lpfc_cmpl_els_fdisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
else
vport->fc_flag |= FC_LOGO_RCVD_DID_CHNG;
spin_unlock_irq(shost->host_lock);
} else if ((phba->sli_rev == LPFC_SLI_REV4) &&
!(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
/*
* Driver needs to re-reg VPI in order for f/w
* to update the MAC address.
*/
lpfc_register_new_vport(phba, vport, ndlp);
return ;
}
if (vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI)

15
drivers/scsi/lpfc/lpfc_hbadisc.c
View File

@ -1852,8 +1852,7 @@ lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
__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 |
FCF_DISCOVERY);
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) "
@ -2651,7 +2650,6 @@ lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
spin_unlock_irq(&phba->hbalock);
lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
"2778 Start FCF table scan at linkup\n");
rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
LPFC_FCOE_FCF_GET_FIRST);
if (rc) {
@ -2660,6 +2658,9 @@ lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
spin_unlock_irq(&phba->hbalock);
goto out;
}
/* Reset FCF roundrobin bmask for new discovery */
memset(phba->fcf.fcf_rr_bmask, 0,
sizeof(*phba->fcf.fcf_rr_bmask));
}
return;
@ -5097,6 +5098,7 @@ static void
lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
{
struct lpfc_vport *vport = mboxq->vport;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
if (mboxq->u.mb.mbxStatus) {
lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
@ -5104,6 +5106,9 @@ lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
"HBA state x%x\n",
mboxq->u.mb.mbxStatus, vport->port_state);
}
spin_lock_irq(shost->host_lock);
phba->pport->fc_flag &= ~FC_VFI_REGISTERED;
spin_unlock_irq(shost->host_lock);
mempool_free(mboxq, phba->mbox_mem_pool);
return;
}
@ -5285,6 +5290,10 @@ lpfc_unregister_fcf_rescan(struct lpfc_hba *phba)
spin_lock_irq(&phba->hbalock);
phba->fcf.fcf_flag |= FCF_INIT_DISC;
spin_unlock_irq(&phba->hbalock);
/* Reset FCF roundrobin bmask for new discovery */
memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask));
rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
if (rc) {

6
drivers/scsi/lpfc/lpfc_hw.h
View File

@ -2291,7 +2291,8 @@ typedef struct {
typedef struct {
#ifdef __BIG_ENDIAN_BITFIELD
uint32_t rsvd1;
uint32_t rsvd2:8;
uint32_t rsvd2:7;
uint32_t upd:1;
uint32_t sid:24;
uint32_t wwn[2];
uint32_t rsvd5;
@ -2300,7 +2301,8 @@ typedef struct {
#else /* __LITTLE_ENDIAN */
uint32_t rsvd1;
uint32_t sid:24;
uint32_t rsvd2:8;
uint32_t upd:1;
uint32_t rsvd2:7;
uint32_t wwn[2];
uint32_t rsvd5;
uint16_t vpi;

79
drivers/scsi/lpfc/lpfc_init.c
View File

@ -3300,10 +3300,10 @@ lpfc_sli4_perform_vport_cvl(struct lpfc_vport *vport)
if (!ndlp)
return 0;
}
if (phba->pport->port_state <= LPFC_FLOGI)
if (phba->pport->port_state < LPFC_FLOGI)
return NULL;
/* If virtual link is not yet instantiated ignore CVL */
if (vport->port_state <= LPFC_FDISC)
if ((vport != phba->pport) && (vport->port_state < LPFC_FDISC))
return NULL;
shost = lpfc_shost_from_vport(vport);
if (!shost)
@ -3376,21 +3376,7 @@ lpfc_sli4_async_fcoe_evt(struct lpfc_hba *phba,
"evt_tag:x%x, fcf_index:x%x\n",
acqe_fcoe->event_tag,
acqe_fcoe->index);
/* If the FCF discovery is in progress, do nothing. */
spin_lock_irq(&phba->hbalock);
if (phba->hba_flag & FCF_DISC_INPROGRESS) {
spin_unlock_irq(&phba->hbalock);
break;
}
/* If fast FCF failover rescan event is pending, do nothing */
if (phba->fcf.fcf_flag & FCF_REDISC_EVT) {
spin_unlock_irq(&phba->hbalock);
break;
}
spin_unlock_irq(&phba->hbalock);
if ((phba->fcf.fcf_flag & FCF_DISCOVERY) &&
!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
/*
* During period of FCF discovery, read the FCF
* table record indexed by the event to update
@ -3404,13 +3390,26 @@ lpfc_sli4_async_fcoe_evt(struct lpfc_hba *phba,
acqe_fcoe->index);
rc = lpfc_sli4_read_fcf_rec(phba, acqe_fcoe->index);
}
/* If the FCF has been in discovered state, do nothing. */
/* If the FCF discovery is in progress, do nothing. */
spin_lock_irq(&phba->hbalock);
if (phba->hba_flag & FCF_DISC_INPROGRESS) {
spin_unlock_irq(&phba->hbalock);
break;
}
/* If fast FCF failover rescan event is pending, do nothing */
if (phba->fcf.fcf_flag & FCF_REDISC_EVT) {
spin_unlock_irq(&phba->hbalock);
break;
}
/* If the FCF has been in discovered state, do nothing. */
if (phba->fcf.fcf_flag & FCF_SCAN_DONE) {
spin_unlock_irq(&phba->hbalock);
break;
}
spin_unlock_irq(&phba->hbalock);
/* Otherwise, scan the entire FCF table and re-discover SAN */
lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
"2770 Start FCF table scan due to new FCF "
@ -3436,13 +3435,9 @@ lpfc_sli4_async_fcoe_evt(struct lpfc_hba *phba,
"2549 FCF disconnected from network index 0x%x"
" tag 0x%x\n", acqe_fcoe->index,
acqe_fcoe->event_tag);
/* If the event is not for currently used fcf do nothing */
if (phba->fcf.current_rec.fcf_indx != acqe_fcoe->index)
break;
/* 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 we are not in the middle of FCF
* failover process already.
/*
* If we are in the middle of FCF failover process, clear
* the corresponding FCF bit in the roundrobin bitmap.
*/
spin_lock_irq(&phba->hbalock);
if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
@ -3451,9 +3446,23 @@ lpfc_sli4_async_fcoe_evt(struct lpfc_hba *phba,
lpfc_sli4_fcf_rr_index_clear(phba, acqe_fcoe->index);
break;
}
spin_unlock_irq(&phba->hbalock);
/* If the event is not for currently used fcf do nothing */
if (phba->fcf.current_rec.fcf_indx != acqe_fcoe->index)
break;
/*
* Otherwise, request the port to rediscover the entire FCF
* table for a fast recovery from case that the current FCF
* is no longer valid as we are not in the middle of FCF
* failover process already.
*/
spin_lock_irq(&phba->hbalock);
/* Mark the fast failover process in progress */
phba->fcf.fcf_flag |= FCF_DEAD_DISC;
spin_unlock_irq(&phba->hbalock);
lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
"2771 Start FCF fast failover process due to "
"FCF DEAD event: evt_tag:x%x, fcf_index:x%x "
@ -3473,12 +3482,16 @@ lpfc_sli4_async_fcoe_evt(struct lpfc_hba *phba,
* 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.
} else {
/* Reset FCF roundrobin bmask for new discovery */
memset(phba->fcf.fcf_rr_bmask, 0,
sizeof(*phba->fcf.fcf_rr_bmask));
/*
* 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_FIP | LOG_DISCOVERY,
@ -3553,7 +3566,13 @@ lpfc_sli4_async_fcoe_evt(struct lpfc_hba *phba,
* the current registered FCF entry.
*/
lpfc_retry_pport_discovery(phba);
}
} else
/*
* Reset FCF roundrobin bmask for new
* discovery.
*/
memset(phba->fcf.fcf_rr_bmask, 0,
sizeof(*phba->fcf.fcf_rr_bmask));
}
break;
default:

8
drivers/scsi/lpfc/lpfc_mbox.c
View File

@ -815,9 +815,15 @@ void
lpfc_reg_vpi(struct lpfc_vport *vport, LPFC_MBOXQ_t *pmb)
{
MAILBOX_t *mb = &pmb->u.mb;
struct lpfc_hba *phba = vport->phba;
memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
/*
* Set the re-reg VPI bit for f/w to update the MAC address.
*/
if ((phba->sli_rev == LPFC_SLI_REV4) &&
!(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI))
mb->un.varRegVpi.upd = 1;
mb->un.varRegVpi.vpi = vport->vpi + vport->phba->vpi_base;
mb->un.varRegVpi.sid = vport->fc_myDID;
mb->un.varRegVpi.vfi = vport->vfi + vport->phba->vfi_base;

7
drivers/scsi/lpfc/lpfc_sli.c
View File

@ -12295,12 +12295,9 @@ lpfc_sli4_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, uint16_t fcf_index)
spin_lock_irq(&phba->hbalock);
phba->hba_flag |= FCF_DISC_INPROGRESS;
spin_unlock_irq(&phba->hbalock);
/* Reset FCF round robin index bmask for new scan */
if (fcf_index == LPFC_FCOE_FCF_GET_FIRST) {
memset(phba->fcf.fcf_rr_bmask, 0,
sizeof(*phba->fcf.fcf_rr_bmask));
/* Reset eligible FCF count for new scan */
if (fcf_index == LPFC_FCOE_FCF_GET_FIRST)
phba->fcf.eligible_fcf_cnt = 0;
}
error = 0;
}
fail_fcf_scan: