The lpfc_hdw_queue attribute is to set the number of hardware queues
to be created on the adapter. Normally, the value is set to a default,
which allows the hw queue count to be sized dynamically based on
adapter capabilities, cpu/platform architecture, or cpu type. Currently,
when lpfc_hdw_queue is set to a specific value, is has no effect and
the dynamic sizing occurs.
The routine checking whether parameters are default or not ignores the
lpfc_hdw_queue setting and invokes the dynamic logic.
Fix the routine to additionally check the lpfc_hdw_queue attribute value
before using dynamic scaling. Additionally, SLI-3 supports only a small
number of queues with dedicated functions, thus it needs to be exempted
from the variable scaling and set to the expected values.
Co-developed-by: Justin Tee <justin.tee@xxxxxxxxxxxx>
Signed-off-by: Justin Tee <justin.tee@xxxxxxxxxxxx>
Signed-off-by: James Smart <jsmart2021@xxxxxxxxx>
---
drivers/scsi/lpfc/lpfc_attr.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
index b253be355b4f..b703fe3b606e 100644
--- a/drivers/scsi/lpfc/lpfc_attr.c
+++ b/drivers/scsi/lpfc/lpfc_attr.c
@@ -5815,7 +5815,9 @@ lpfc_irq_chann_init(struct lpfc_hba *phba, uint32_t val)
}
/* Check if default setting was passed */
- if (val == LPFC_IRQ_CHANN_DEF)
+ if (val == LPFC_IRQ_CHANN_DEF &&
+ phba->cfg_hdw_queue == LPFC_HBA_HDWQ_DEF &&
+ phba->sli_rev == LPFC_SLI_REV4)
lpfc_assign_default_irq_chann(phba);
if (phba->irq_chann_mode != NORMAL_MODE) {
@@ -5854,7 +5856,12 @@ lpfc_irq_chann_init(struct lpfc_hba *phba, uint32_t val)
phba->cfg_irq_chann = LPFC_IRQ_CHANN_DEF;
return -EINVAL;
}
- phba->cfg_irq_chann = val;
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ phba->cfg_irq_chann = val;
+ } else {
+ phba->cfg_irq_chann = 2;
+ phba->cfg_hdw_queue = 1;
+ }
}
return 0;
@@ -7411,7 +7418,8 @@ lpfc_get_cfgparam(struct lpfc_hba *phba)
phba->cfg_hdw_queue = phba->sli4_hba.num_present_cpu;
if (phba->cfg_irq_chann == 0)
phba->cfg_irq_chann = phba->sli4_hba.num_present_cpu;
- if (phba->cfg_irq_chann > phba->cfg_hdw_queue)
+ if (phba->cfg_irq_chann > phba->cfg_hdw_queue &&
+ phba->sli_rev == LPFC_SLI_REV4)
phba->cfg_irq_chann = phba->cfg_hdw_queue;
phba->cfg_soft_wwnn = 0L;
--
2.26.2
