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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: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
James Smart 2019-08-14 16:56:50 -07:00 committed by Martin K. Petersen
parent c26c265b16
commit a6d10f24a0
2 changed files with 27 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/scsi/lpfc/lpfc_els.c
View File

@ -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;
}

31
drivers/scsi/lpfc/lpfc_nvme.c
View File

@ -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
}