netdev - [PATCH net 1/6] igc: Add condition for qbv_config_change

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Date: Wed,  5 Jul 2023 13:19:00 -0700
From: Tony Nguyen <anthony.l.nguyen@...el.com>
To: davem@...emloft.net,
	kuba@...nel.org,
	pabeni@...hat.com,
	edumazet@...gle.com,
	netdev@...r.kernel.org
Cc: Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli@...el.com>,
	anthony.l.nguyen@...el.com,
	sasha.neftin@...el.com,
	Naama Meir <naamax.meir@...ux.intel.com>
Subject: [PATCH net 1/6] igc: Add condition for qbv_config_change_errors counter

From: Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli@...el.com>

Add condition to increase the qbv counter during taprio qbv
configuration only.

There might be a case when TC already been setup then user configure
the ETF/CBS qdisc and this counter will increase if no condition above.

Fixes: ae4fe4698300 ("igc: Add qbv_config_change_errors counter")
Signed-off-by: Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli@...el.com>
Tested-by: Naama Meir <naamax.meir@...ux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
 drivers/net/ethernet/intel/igc/igc.h      | 1 +
 drivers/net/ethernet/intel/igc/igc_main.c | 2 ++
 drivers/net/ethernet/intel/igc/igc_tsn.c  | 1 +
 3 files changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/intel/igc/igc.h b/drivers/net/ethernet/intel/igc/igc.h
index 00a5ee487812..aa5ceab0d371 100644
--- a/drivers/net/ethernet/intel/igc/igc.h
+++ b/drivers/net/ethernet/intel/igc/igc.h
@@ -184,6 +184,7 @@ struct igc_adapter {
 	u32 max_frame_size;
 	u32 min_frame_size;
 
+	int tc_setup_type;
 	ktime_t base_time;
 	ktime_t cycle_time;
 	bool qbv_enable;
diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c
index 019ce91c45aa..b90f94511005 100644
--- a/drivers/net/ethernet/intel/igc/igc_main.c
+++ b/drivers/net/ethernet/intel/igc/igc_main.c
@@ -6327,6 +6327,8 @@ static int igc_setup_tc(struct net_device *dev, enum tc_setup_type type,
 {
 	struct igc_adapter *adapter = netdev_priv(dev);
 
+	adapter->tc_setup_type = type;
+
 	switch (type) {
 	case TC_QUERY_CAPS:
 		return igc_tc_query_caps(adapter, type_data);
diff --git a/drivers/net/ethernet/intel/igc/igc_tsn.c b/drivers/net/ethernet/intel/igc/igc_tsn.c
index 94a2b0dfb54d..6b299b83e7ef 100644
--- a/drivers/net/ethernet/intel/igc/igc_tsn.c
+++ b/drivers/net/ethernet/intel/igc/igc_tsn.c
@@ -249,6 +249,7 @@ static int igc_tsn_enable_offload(struct igc_adapter *adapter)
 		 * Gate Control List (GCL) is running.
 		 */
 		if ((rd32(IGC_BASET_H) || rd32(IGC_BASET_L)) &&
+		    (adapter->tc_setup_type == TC_SETUP_QDISC_TAPRIO) &&
 		    tsn_mode_reconfig)
 			adapter->qbv_config_change_errors++;
 	} else {
-- 
2.38.1