diff options
| author | Justin Tee <justin.tee@broadcom.com> | 2024-07-27 02:15:09 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2024-08-03 04:48:05 +0300 |
| commit | b5c18c9dd138733c16893613345af44deadcf05e (patch) | |
| tree | 56db97fbcebec977cfb1553860143c1a5acfd1e3 /drivers/scsi/lpfc/lpfc_hbadisc.c | |
| parent | 3976beb1b410441bab9c3726e2ba76cc7a4c0b2d (diff) | |
| download | linux-b5c18c9dd138733c16893613345af44deadcf05e.tar.xz | |
scsi: lpfc: Fix unsolicited FLOGI kref imbalance when in direct attached topology
In direct attached topology, certain target vendors that are quick to issue
FLOGI followed by a cable pull for more than dev_loss_tmo may result in a
kref imbalance for the remote port ndlp object.
Add an nlp_get when the defer_flogi_acc flag is set. This is expected to
balance the nlp_put in the defer_flogi_acc clause in the
lpfc_issue_els_flogi() routine. Because we need to retain the ndlp ptr,
reorganize all of the defer_flogi_acc information into one
lpfc_defer_flogi_acc struct.
Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Link: https://lore.kernel.org/r/20240726231512.92867-6-justintee8345@gmail.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_hbadisc.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_hbadisc.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c index f21c5993e8d7..35c9181c6608 100644 --- a/drivers/scsi/lpfc/lpfc_hbadisc.c +++ b/drivers/scsi/lpfc/lpfc_hbadisc.c @@ -1255,7 +1255,14 @@ lpfc_linkdown(struct lpfc_hba *phba) lpfc_scsi_dev_block(phba); offline = pci_channel_offline(phba->pcidev); - phba->defer_flogi_acc_flag = false; + /* Decrement the held ndlp if there is a deferred flogi acc */ + if (phba->defer_flogi_acc.flag) { + if (phba->defer_flogi_acc.ndlp) { + lpfc_nlp_put(phba->defer_flogi_acc.ndlp); + phba->defer_flogi_acc.ndlp = NULL; + } + } + phba->defer_flogi_acc.flag = false; /* Clear external loopback plug detected flag */ phba->link_flag &= ~LS_EXTERNAL_LOOPBACK; @@ -1377,7 +1384,7 @@ lpfc_linkup_port(struct lpfc_vport *vport) (vport != phba->pport)) return; - if (phba->defer_flogi_acc_flag) { + if (phba->defer_flogi_acc.flag) { clear_bit(FC_ABORT_DISCOVERY, &vport->fc_flag); clear_bit(FC_RSCN_MODE, &vport->fc_flag); clear_bit(FC_NLP_MORE, &vport->fc_flag); |