From: Tan Tee Min tee.min.tan@linux.intel.com
[ Upstream commit 72abeedd83982c1bc6023f631e412db78374d9b4 ]
The default setting of end_time minus start_time is whole 1 second. Thus, if it's not being configured in any GCL entry then it will be staying at original 1 second.
This patch is changing the start_time and end_time to be end_time as if setting zero will be having weird HW behavior where the gate will not be fully closed.
Fixes: ec50a9d437f0 ("igc: Add support for taprio offloading") Signed-off-by: Tan Tee Min tee.min.tan@linux.intel.com Signed-off-by: Muhammad Husaini Zulkifli muhammad.husaini.zulkifli@intel.com Tested-by: Naama Meir naamax.meir@linux.intel.com Signed-off-by: Tony Nguyen anthony.l.nguyen@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/intel/igc/igc_main.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c index 9420a169780c..1a0aae7b128d 100644 --- a/drivers/net/ethernet/intel/igc/igc_main.c +++ b/drivers/net/ethernet/intel/igc/igc_main.c @@ -4913,6 +4913,7 @@ static int igc_save_qbv_schedule(struct igc_adapter *adapter, bool queue_configured[IGC_MAX_TX_QUEUES] = { }; u32 start_time = 0, end_time = 0; size_t n; + int i;
if (!qopt->enable) { adapter->base_time = 0; @@ -4933,7 +4934,6 @@ static int igc_save_qbv_schedule(struct igc_adapter *adapter,
for (n = 0; n < qopt->num_entries; n++) { struct tc_taprio_sched_entry *e = &qopt->entries[n]; - int i;
end_time += e->interval;
@@ -4972,6 +4972,18 @@ static int igc_save_qbv_schedule(struct igc_adapter *adapter, start_time += e->interval; }
+ /* Check whether a queue gets configured. + * If not, set the start and end time to be end time. + */ + for (i = 0; i < adapter->num_tx_queues; i++) { + if (!queue_configured[i]) { + struct igc_ring *ring = adapter->tx_ring[i]; + + ring->start_time = end_time; + ring->end_time = end_time; + } + } + return 0; }