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Commit a6d10f24 authored by James Smart's avatar James Smart Committed by Martin K. Petersen
Browse files

scsi: lpfc: Fix driver nvme rescan logging 



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: default avatarDick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: default avatarJames Smart <jsmart2021@gmail.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent c26c265b

drivers/scsi/lpfc/lpfc_els.c

+10 −2
Original line number Diff line number Diff line
@@ -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;

	}

drivers/scsi/lpfc/lpfc_nvme.c

+17 −14
Original line number Diff line number Diff line
@@ -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

}