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[05/20] lpfc: Discovery state machine fixes for LOGO handling

Message ID 20210707184351.67872-6-jsmart2021@gmail.com
State New
Headers show
Series lpfc: Update lpfc to revision 12.8.0.11 | expand

Commit Message

James Smart July 7, 2021, 6:43 p.m. UTC 
- If a LOGO is received for a node that is in the NPR state, post a
  DEVICE_RM event to allow clean up of the logged out node.

- Clearing the NLP_NPR_2B_DISC flag upon receipt of a LOGO ACC may cause
  skipping of processing outstanding PLOGIs triggered by parallel RSCN
  events.  If an outstanding PLOGI is being retried and receipt of a
  LOGO ACC occurs, then allow the discovery state machine's PLOGI
  completion to clean up the node.

Co-developed-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
---
 drivers/scsi/lpfc/lpfc_els.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)
diff mbox series

Patch

diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c
index e481f5fe29d7..b0c443a0cf92 100644
--- a/drivers/scsi/lpfc/lpfc_els.c
+++ b/drivers/scsi/lpfc/lpfc_els.c
@@ -4612,6 +4612,15 @@  lpfc_cmpl_els_logo_acc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
 		goto out;
 
 	if (ndlp->nlp_state == NLP_STE_NPR_NODE) {
+
+		/* If PLOGI is being retried, PLOGI completion will cleanup the
+		 * node. The NLP_NPR_2B_DISC flag needs to be retained to make
+		 * progress on nodes discovered from last RSCN.
+		 */
+		if ((ndlp->nlp_flag & NLP_DELAY_TMO) &&
+		    (ndlp->nlp_last_elscmd == ELS_CMD_PLOGI))
+			goto out;
+
 		/* NPort Recovery mode or node is just allocated */
 		if (!lpfc_nlp_not_used(ndlp)) {
 			/* A LOGO is completing and the node is in NPR state.
@@ -8948,6 +8957,9 @@  lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
 			break;
 		}
 		lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_LOGO);
+		if (newnode)
+			lpfc_disc_state_machine(vport, ndlp, NULL,
+					NLP_EVT_DEVICE_RM);
 		break;
 	case ELS_CMD_PRLO:
 		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,