[PATCH AUTOSEL 6.7 073/108] scsi: lpfc: Move determination of vmid_flag after VMID reinitialization completes

Sasha Levin
2024-01-16T19:45:52Z

From: Justin Tee <justin.tee@broadcom.com>

[ Upstream commit aba0fb0ef607a71511d23a07406f11130c1a54c5 ]

If priority tagging is set in the service parameters of a FLOGI cmpl, then
we update the vmid_flag. In the current logic, if a follow up FLOGI cmpl
updates its service parameters such that priority tagging is no longer set,
then the vmid_flag ends up keeping stale data.

Fix by ensuring we clear the vmid_flag member during lpfc_reinit_vmid, and
check the priority tagging service parameter after reinitialization of the
vmid data structures.

Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Link: https://lore.kernel.org/r/20231207224039.35466-4-justintee8345@gmail.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/scsi/lpfc/lpfc_els.c | 6 +++---
drivers/scsi/lpfc/lpfc_vmid.c | 1 +
2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c
index 699b2c500f7e..e53c1f3dd23a 100644
--- a/drivers/scsi/lpfc/lpfc_els.c
+++ b/drivers/scsi/lpfc/lpfc_els.c
@@ -1130,12 +1130,12 @@ lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
vport->port_state, vport->fc_flag,
sp->cmn.priority_tagging, kref_read(&ndlp->kref));

- if (sp->cmn.priority_tagging)
- vport->phba->pport->vmid_flag |= (LPFC_VMID_ISSUE_QFPA |
- LPFC_VMID_TYPE_PRIO);
/* reinitialize the VMID datastructure before returning */
if (lpfc_is_vmid_enabled(phba))
lpfc_reinit_vmid(vport);
+ if (sp->cmn.priority_tagging)
+ vport->phba->pport->vmid_flag |= (LPFC_VMID_ISSUE_QFPA |
+ LPFC_VMID_TYPE_PRIO);

/*
* Address a timing race with dev_loss. If dev_loss is active on
diff --git a/drivers/scsi/lpfc/lpfc_vmid.c b/drivers/scsi/lpfc/lpfc_vmid.c
index cf8ba840d0ea..773e02ae20c3 100644
--- a/drivers/scsi/lpfc/lpfc_vmid.c
+++ b/drivers/scsi/lpfc/lpfc_vmid.c
@@ -321,5 +321,6 @@ lpfc_reinit_vmid(struct lpfc_vport *vport)
if (!hash_empty(vport->hash_table))
hash_for_each_safe(vport->hash_table, bucket, tmp, cur, hnode)
hash_del(&cur->hnode);
+ vport->vmid_flag = 0;
write_unlock(&vport->vmid_lock);
}
--
2.43.0