[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_ct.c b/drivers/scsi/lpfc/lpfc_ct.c
index 3d0ccd9..b64dc711 100644
--- a/drivers/scsi/lpfc/lpfc_ct.c
+++ b/drivers/scsi/lpfc/lpfc_ct.c
@@ -438,7 +438,7 @@
(!(vport->ct_flags & FC_CT_RFF_ID)) ||
(!vport->cfg_restrict_login)) {
ndlp = lpfc_setup_disc_node(vport, Did);
- if (ndlp) {
+ if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
lpfc_debugfs_disc_trc(vport,
LPFC_DISC_TRC_CT,
"Parse GID_FTrsp: "
@@ -543,7 +543,7 @@
struct lpfc_dmabuf *outp;
struct lpfc_sli_ct_request *CTrsp;
struct lpfc_nodelist *ndlp;
- int rc, retry;
+ int rc;
/* First save ndlp, before we overwrite it */
ndlp = cmdiocb->context_un.ndlp;
@@ -563,45 +563,29 @@
if (vport->load_flag & FC_UNLOADING)
goto out;
- if (lpfc_els_chk_latt(vport) || lpfc_error_lost_link(irsp)) {
+ if (lpfc_els_chk_latt(vport)) {
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
"0216 Link event during NS query\n");
lpfc_vport_set_state(vport, FC_VPORT_FAILED);
goto out;
}
-
+ if (lpfc_error_lost_link(irsp)) {
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
+ "0226 NS query failed due to link event\n");
+ goto out;
+ }
if (irsp->ulpStatus) {
/* Check for retry */
if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
- retry = 1;
- if (irsp->ulpStatus == IOSTAT_LOCAL_REJECT) {
- switch (irsp->un.ulpWord[4]) {
- case IOERR_NO_RESOURCES:
- /* We don't increment the retry
- * count for this case.
- */
- break;
- case IOERR_LINK_DOWN:
- case IOERR_SLI_ABORTED:
- case IOERR_SLI_DOWN:
- retry = 0;
- break;
- default:
- vport->fc_ns_retry++;
- }
- }
- else
+ if (irsp->ulpStatus != IOSTAT_LOCAL_REJECT ||
+ irsp->un.ulpWord[4] != IOERR_NO_RESOURCES)
vport->fc_ns_retry++;
- if (retry) {
- /* CT command is being retried */
- rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
+ /* CT command is being retried */
+ rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
vport->fc_ns_retry, 0);
- if (rc == 0) {
- /* success */
- goto out;
- }
- }
+ if (rc == 0)
+ goto out;
}
lpfc_vport_set_state(vport, FC_VPORT_FAILED);
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
@@ -780,7 +764,7 @@
/* This is a target port, unregistered port, or the GFF_ID failed */
ndlp = lpfc_setup_disc_node(vport, did);
- if (ndlp) {
+ if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
"0242 Process x%x GFF "
"NameServer Rsp Data: x%x x%x x%x\n",