diff options
| author | James Smart <jsmart2021@gmail.com> | 2022-07-01 14:14:20 -0700 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2022-07-07 17:21:43 -0400 |
| commit | ea92e173dc55460f1b9e71df5ceac951c506d214 (patch) | |
| tree | f61fb3dd948225184d9532e8ce88fbde24542304 /drivers/scsi/lpfc/lpfc_els.c | |
| parent | 43e19a96a7895f5588ffc6bf9768f362ae3af70e (diff) | |
scsi: lpfc: Fix lost NVMe paths during LIF bounce stress test
During a target link bounce test, the driver sees a mismatch between the
NPortId and the WWPN on the node structures (ndlps) involved. When this
occurs, the driver "swaps" the ndlp and new_ndlp node parameters to restore
WWPN/DID uniqueness in the fc_nodes list per vport. However, the driver
neglected to swap the nlp_fc4_type in the ndlp passed to
lpfc_plogi_confirm_nport causing a failure to recover the NVMe PLOGI/PRLI
and ultimately the NVMe paths.
Correct confirm_nport to preserve the fc4 types from the new-ndlp when the
data is moved over ot the ndlp structure.
Link: https://lore.kernel.org/r/20220701211425.2708-8-jsmart2021@gmail.com
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>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_els.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_els.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c index 3fababb7c181..31fb2ee07bfa 100644 --- a/drivers/scsi/lpfc/lpfc_els.c +++ b/drivers/scsi/lpfc/lpfc_els.c @@ -1790,18 +1790,20 @@ lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp, /* Move this back to NPR state */ if (memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)) == 0) { - /* The new_ndlp is replacing ndlp totally, so we need - * to put ndlp on UNUSED list and try to free it. + /* The ndlp doesn't have a portname yet, but does have an + * NPort ID. The new_ndlp portname matches the Rport's + * portname. Reinstantiate the new_ndlp and reset the ndlp. */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "3179 PLOGI confirm NEW: %x %x\n", new_ndlp->nlp_DID, keepDID); /* Two ndlps cannot have the same did on the nodelist. - * Note: for this case, ndlp has a NULL WWPN so setting - * the nlp_fc4_type isn't required. + * The KeepDID and keep_nlp_fc4_type need to be swapped + * because ndlp is inflight with no WWPN. */ ndlp->nlp_DID = keepDID; + ndlp->nlp_fc4_type = keep_nlp_fc4_type; lpfc_nlp_set_state(vport, ndlp, keep_nlp_state); if (phba->sli_rev == LPFC_SLI_REV4 && active_rrqs_xri_bitmap) @@ -1816,9 +1818,8 @@ lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp, lpfc_unreg_rpi(vport, ndlp); - /* Two ndlps cannot have the same did and the fc4 - * type must be transferred because the ndlp is in - * flight. + /* The ndlp and new_ndlp both have WWPNs but are swapping + * NPort Ids and attributes. */ ndlp->nlp_DID = keepDID; ndlp->nlp_fc4_type = keep_nlp_fc4_type; |