[SCSI] lpfc 8.2.6 : Multiple discovery fixes
Multiple Discovery Fixes:
- Fix race on discovery due to link events coinciding with vport_delete.
- Use NLP_FABRIC state to filter out switch-based pseudo initiators that
reuse the same WWNs.
- Correct erroneous setting of DID=0 in lpfc_matchdid()
- Correct extra reference count that was in the lookup path for the
remoteid from an unsolicited ELS.
- Correct double-free bug in els abort path.
- Correct FDMI server discovery logic for switch that return a WWN of 0.
- Fix bugs in ndlp mgmt when a node changes address
- Correct bug that did not delete RSCNs for vports upon link transitions
- Fix "0216 Link event during NS query" error which pops up when vports
are swapped to different switch ports.
- Add sanity checks on ndlp structures
- Fix devloss log message to dump WWN correctly
- Hold off mgmt commands that were interferring with discovery mailbox cmds
- Remove unnecessary FC_ESTABLISH_LINK logic.
- Correct some race conditions in the worker thread, resulting in devloss:
- Clear the work_port_events field before handling the work port events
- Clear the deferred ring event before handling a deferred ring event
- Hold the hba lock when waking up the work thread
- Send an acc for the rscn even when we aren't going to handle it
- Fix locking behavior that was not properly protecting the ACTIVE flag,
thus allowing mailbox command order to shift.
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index fc0d950..c71b9a5 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -2648,7 +2648,6 @@
spin_unlock_irq(&phba->pport->work_port_lock);
spin_lock_irq(&phba->hbalock);
phba->link_state = LPFC_LINK_UNKNOWN;
- phba->pport->fc_flag |= FC_ESTABLISH_LINK;
psli->sli_flag &= ~LPFC_SLI2_ACTIVE;
spin_unlock_irq(&phba->hbalock);
@@ -2669,8 +2668,7 @@
lpfc_offline_prep(phba);
lpfc_offline(phba);
lpfc_sli_brdrestart(phba);
- if (lpfc_online(phba) == 0) /* Initialize the HBA */
- mod_timer(&phba->fc_estabtmo, jiffies + HZ * 60);
+ lpfc_online(phba);
lpfc_unblock_mgmt_io(phba);
return;
}
@@ -2687,28 +2685,41 @@
unsigned long drvr_flag = 0;
volatile uint32_t word0, ldata;
void __iomem *to_slim;
+ int processing_queue = 0;
+
+ spin_lock_irqsave(&phba->hbalock, drvr_flag);
+ if (!pmbox) {
+ /* processing mbox queue from intr_handler */
+ processing_queue = 1;
+ phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
+ pmbox = lpfc_mbox_get(phba);
+ if (!pmbox) {
+ spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
+ return MBX_SUCCESS;
+ }
+ }
if (pmbox->mbox_cmpl && pmbox->mbox_cmpl != lpfc_sli_def_mbox_cmpl &&
pmbox->mbox_cmpl != lpfc_sli_wake_mbox_wait) {
if(!pmbox->vport) {
+ spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
lpfc_printf_log(phba, KERN_ERR,
LOG_MBOX | LOG_VPORT,
"1806 Mbox x%x failed. No vport\n",
pmbox->mb.mbxCommand);
dump_stack();
- return MBX_NOT_FINISHED;
+ goto out_not_finished;
}
}
-
/* If the PCI channel is in offline state, do not post mbox. */
- if (unlikely(pci_channel_offline(phba->pcidev)))
- return MBX_NOT_FINISHED;
+ if (unlikely(pci_channel_offline(phba->pcidev))) {
+ spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
+ goto out_not_finished;
+ }
- spin_lock_irqsave(&phba->hbalock, drvr_flag);
psli = &phba->sli;
-
mb = &pmbox->mb;
status = MBX_SUCCESS;
@@ -2717,14 +2728,14 @@
/* Mbox command <mbxCommand> cannot issue */
LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag);
- return MBX_NOT_FINISHED;
+ goto out_not_finished;
}
if (mb->mbxCommand != MBX_KILL_BOARD && flag & MBX_NOWAIT &&
!(readl(phba->HCregaddr) & HC_MBINT_ENA)) {
spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag);
- return MBX_NOT_FINISHED;
+ goto out_not_finished;
}
if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) {
@@ -2738,14 +2749,14 @@
/* Mbox command <mbxCommand> cannot issue */
LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag);
- return MBX_NOT_FINISHED;
+ goto out_not_finished;
}
if (!(psli->sli_flag & LPFC_SLI2_ACTIVE)) {
spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
/* Mbox command <mbxCommand> cannot issue */
LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag);
- return MBX_NOT_FINISHED;
+ goto out_not_finished;
}
/* Another mailbox command is still being processed, queue this
@@ -2792,7 +2803,7 @@
spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
/* Mbox command <mbxCommand> cannot issue */
LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag);
- return MBX_NOT_FINISHED;
+ goto out_not_finished;
}
/* timeout active mbox command */
mod_timer(&psli->mbox_tmo, (jiffies +
@@ -2900,7 +2911,7 @@
psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
spin_unlock_irqrestore(&phba->hbalock,
drvr_flag);
- return MBX_NOT_FINISHED;
+ goto out_not_finished;
}
/* Check if we took a mbox interrupt while we were
@@ -2967,6 +2978,13 @@
spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
return status;
+
+out_not_finished:
+ if (processing_queue) {
+ pmbox->mb.mbxStatus = MBX_NOT_FINISHED;
+ lpfc_mbox_cmpl_put(phba, pmbox);
+ }
+ return MBX_NOT_FINISHED;
}
/*
@@ -3613,6 +3631,16 @@
irsp->ulpStatus, irsp->un.ulpWord[4]);
/*
+ * If the iocb is not found in Firmware queue the iocb
+ * might have completed already. Do not free it again.
+ */
+ if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
+ (irsp->un.ulpWord[4] == IOERR_NO_XRI)) {
+ spin_unlock_irq(&phba->hbalock);
+ lpfc_sli_release_iocbq(phba, cmdiocb);
+ return;
+ }
+ /*
* make sure we have the right iocbq before taking it
* off the txcmplq and try to call completion routine.
*/
@@ -4237,10 +4265,15 @@
pmb->context1 = mp;
pmb->context2 = ndlp;
pmb->vport = vport;
- spin_lock(&phba->hbalock);
- phba->sli.sli_flag &=
- ~LPFC_SLI_MBOX_ACTIVE;
- spin_unlock(&phba->hbalock);
+ rc = lpfc_sli_issue_mbox(phba,
+ pmb,
+ MBX_NOWAIT);
+ if (rc != MBX_BUSY)
+ lpfc_printf_log(phba,
+ KERN_ERR,
+ LOG_MBOX | LOG_SLI,
+ "0306 rc should have"
+ "been MBX_BUSY");
goto send_current_mbox;
}
}
@@ -4253,22 +4286,16 @@
}
if ((work_ha_copy & HA_MBATT) &&
(phba->sli.mbox_active == NULL)) {
-send_next_mbox:
- spin_lock(&phba->hbalock);
- phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
- pmb = lpfc_mbox_get(phba);
- spin_unlock(&phba->hbalock);
send_current_mbox:
/* Process next mailbox command if there is one */
- if (pmb != NULL) {
- rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
- if (rc == MBX_NOT_FINISHED) {
- pmb->mb.mbxStatus = MBX_NOT_FINISHED;
- lpfc_mbox_cmpl_put(phba, pmb);
- goto send_next_mbox;
- }
- }
-
+ do {
+ rc = lpfc_sli_issue_mbox(phba, NULL,
+ MBX_NOWAIT);
+ } while (rc == MBX_NOT_FINISHED);
+ if (rc != MBX_SUCCESS)
+ lpfc_printf_log(phba, KERN_ERR, LOG_MBOX |
+ LOG_SLI, "0349 rc should be "
+ "MBX_SUCCESS");
}
spin_lock(&phba->hbalock);