[PATCH-v1 21/22] Fix Express lane queue creation.

jsmart2021
2017-04-20T04:47:36Z

From: James Smart <jsmart2021@gmail.com>

The older sli4 adapters only supported the 64 byte WQE entry size.
The new adapter (fw) support both 64 and 128 byte WQE entry sizies.
The Express lane WQ was not being created with the 128 byte WQE sizes
when it was supported.

Not having the right WQE size created for the express lane work queue
caused the the firmware to overwrite the lun indentifier in the FCP header.

This patch correctly creates the express lane work queue with the
supported size.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
---
drivers/scsi/lpfc/lpfc_init.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index e084a66..7d3b199 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -12040,6 +12040,7 @@ int
lpfc_fof_queue_create(struct lpfc_hba *phba)
{
struct lpfc_queue *qdesc;
+ uint32_t wqesize;

/* Create FOF EQ */
qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.eq_esize,
@@ -12060,8 +12061,11 @@ lpfc_fof_queue_create(struct lpfc_hba *phba)
phba->sli4_hba.oas_cq = qdesc;

/* Create OAS WQ */
- qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.wq_esize,
+ wqesize = (phba->fcp_embed_io) ?
+ LPFC_WQE128_SIZE : phba->sli4_hba.wq_esize;
+ qdesc = lpfc_sli4_queue_alloc(phba, wqesize,
phba->sli4_hba.wq_ecount);
+
if (!qdesc)
goto out_error;

--
2.1.0