In situations where zoning is not being used, thus NVMe initiators
see other NVMe initiators as well as NVMe targets, a link bounce
on an initiator will cause the NVMe initiators to spew "6169" State
Error messages.
The driver is not qualifying whether the remote port is a NVMe
targer or not before calling the lpfc_nvme_rescan_port(), which
validates the role and prints the message if its only an NVMe
initiator.
Fix by the following:
- before calling lpfc_nvme_rescan_port() ensure that the node is a
NVMe storage target or a NVMe discovery controller.
- Clean up implementation of lpfc_nvme_rescan_port. remoteport pointer
will always be NULL if a NVMe initiator only. But, grabbing of
remoteport pointer should be done under lock to coincide with
the registering of the remote port with the fc transport.
Signed-off-by: Dick Kennedy <dick.kennedy@xxxxxxxxxxxx>
Signed-off-by: James Smart <jsmart2021@xxxxxxxxx>
---
drivers/scsi/lpfc/lpfc_els.c | 12 ++++++++++--
drivers/scsi/lpfc/lpfc_nvme.c | 31 +++++++++++++++++--------------
2 files changed, 27 insertions(+), 16 deletions(-)
diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c
index 8103635adc38..d919f3161160 100644
--- a/drivers/scsi/lpfc/lpfc_els.c
+++ b/drivers/scsi/lpfc/lpfc_els.c
@@ -6360,7 +6360,11 @@ lpfc_rscn_recovery_check(struct lpfc_vport *vport)
continue;
}
- if (ndlp->nlp_fc4_type & NLP_FC4_NVME)
+ /* Check to see if we need to NVME rescan this target
+ * remoteport.
+ */
+ if (ndlp->nlp_fc4_type & NLP_FC4_NVME &&
+ ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY))
lpfc_nvme_rescan_port(vport, ndlp);
lpfc_disc_state_machine(vport, ndlp, NULL,
@@ -6474,7 +6478,11 @@ lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
*lp, vport->fc_flag, payload_len);
lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
- if (ndlp->nlp_fc4_type & NLP_FC4_NVME)
+ /* Check to see if we need to NVME rescan this target
+ * remoteport.
+ */
+ if (ndlp->nlp_fc4_type & NLP_FC4_NVME &&
+ ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY))
lpfc_nvme_rescan_port(vport, ndlp);
return 0;
}
diff --git a/drivers/scsi/lpfc/lpfc_nvme.c b/drivers/scsi/lpfc/lpfc_nvme.c
index 9746808cf94f..e8924e90c4eb 100644
--- a/drivers/scsi/lpfc/lpfc_nvme.c
+++ b/drivers/scsi/lpfc/lpfc_nvme.c
@@ -2426,20 +2426,23 @@ void
lpfc_nvme_rescan_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
{
#if (IS_ENABLED(CONFIG_NVME_FC))
- struct lpfc_nvme_rport *rport;
- struct nvme_fc_remote_port *remoteport;
+ struct lpfc_nvme_rport *nrport;
+ struct nvme_fc_remote_port *remoteport = NULL;
- rport = ndlp->nrport;
+ spin_lock_irq(&vport->phba->hbalock);
+ nrport = lpfc_ndlp_get_nrport(ndlp);
+ if (nrport)
+ remoteport = nrport->remoteport;
+ spin_unlock_irq(&vport->phba->hbalock);
lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
"6170 Rescan NPort DID x%06x type x%x "
- "state x%x rport %p\n",
- ndlp->nlp_DID, ndlp->nlp_type, ndlp->nlp_state, rport);
- if (!rport)
- goto input_err;
- remoteport = rport->remoteport;
- if (!remoteport)
- goto input_err;
+ "state x%x nrport x%px remoteport x%px\n",
+ ndlp->nlp_DID, ndlp->nlp_type, ndlp->nlp_state,
+ nrport, remoteport);
+
+ if (!nrport || !remoteport)
+ goto rescan_exit;
/* Only rescan if we are an NVME target in the MAPPED state */
if (remoteport->port_role & FC_PORT_ROLE_NVME_DISCOVERY &&
@@ -2452,10 +2455,10 @@ lpfc_nvme_rescan_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
ndlp->nlp_DID, remoteport->port_state);
}
return;
-input_err:
- lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC,
- "6169 State error: lport %p, rport%p FCID x%06x\n",
- vport->localport, ndlp->rport, ndlp->nlp_DID);
+ rescan_exit:
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
+ "6169 Skip NVME Rport Rescan, NVME remoteport "
+ "unregistered\n");
#endif
}
--
2.13.7
