net: hns3: do not query unsupported commands in debugfs

Some commands are not supported on DCB-unsupported ports.
This patch distinguishes these commands and does not query
unsupported commands in debugfs.

This patch also fix an error in the dump "qos buf cfg"
command in debugfs.

Fixes: 2849d4e7 ("net: hns3: Add "tc config" info query function")
Fixes: 7d9d7f88 ("net: hns3: Add "qos buffer" config info query function")
Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
Reviewed-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c

@@ -325,6 +325,12 @@ static void hclge_dbg_dump_tc(struct hclge_dev *hdev)
 	struct hclge_desc desc;
 	int i, ret;
 
+	if (!hnae3_dev_dcb_supported(hdev)) {
+		dev_info(&hdev->pdev->dev,
+			 "Only DCB-supported dev supports tc\n");
+		return;
+	}
+
 	hclge_cmd_setup_basic_desc(&desc, HCLGE_OPC_ETS_TC_WEIGHT, true);
 
 	ret = hclge_cmd_send(&hdev->hw, &desc, 1);
@@ -409,6 +415,12 @@ static void hclge_dbg_dump_tm_pg(struct hclge_dev *hdev)
 
 	dev_info(&hdev->pdev->dev, "QS_SCH qs_id: %u\n", desc.data[0]);
 
+	if (!hnae3_dev_dcb_supported(hdev)) {
+		dev_info(&hdev->pdev->dev,
+			 "Only DCB-supported dev supports tm mapping\n");
+		return;
+	}
+
 	cmd = HCLGE_OPC_TM_BP_TO_QSET_MAPPING;
 	hclge_cmd_setup_basic_desc(&desc, cmd, true);
 	ret = hclge_cmd_send(&hdev->hw, &desc, 1);
@@ -590,6 +602,12 @@ static void hclge_dbg_dump_tm_map(struct hclge_dev *hdev,
 	dev_info(&hdev->pdev->dev, "%04d     | %04d    | %02d     | %02d\n",
 		 queue_id, qset_id, pri_id, tc_id);
 
+	if (!hnae3_dev_dcb_supported(hdev)) {
+		dev_info(&hdev->pdev->dev,
+			 "Only DCB-supported dev supports tm mapping\n");
+		return;
+	}
+
 	cmd = HCLGE_OPC_TM_BP_TO_QSET_MAPPING;
 	bp_to_qs_map_cmd = (struct hclge_bp_to_qs_map_cmd *)desc.data;
 	for (group_id = 0; group_id < 32; group_id++) {
@@ -715,6 +733,34 @@ static void hclge_dbg_dump_qos_buf_cfg(struct hclge_dev *hdev)
 	dev_info(&hdev->pdev->dev, "rx_share_buf: 0x%x\n",
 		 rx_buf_cmd->shared_buf);
 
+	cmd = HCLGE_OPC_RX_COM_WL_ALLOC;
+	hclge_cmd_setup_basic_desc(desc, cmd, true);
+	ret = hclge_cmd_send(&hdev->hw, desc, 1);
+	if (ret)
+		goto err_qos_cmd_send;
+
+	rx_com_wl = (struct hclge_rx_com_wl *)desc[0].data;
+	dev_info(&hdev->pdev->dev, "\n");
+	dev_info(&hdev->pdev->dev, "rx_com_wl: high: 0x%x, low: 0x%x\n",
+		 rx_com_wl->com_wl.high, rx_com_wl->com_wl.low);
+
+	cmd = HCLGE_OPC_RX_GBL_PKT_CNT;
+	hclge_cmd_setup_basic_desc(desc, cmd, true);
+	ret = hclge_cmd_send(&hdev->hw, desc, 1);
+	if (ret)
+		goto err_qos_cmd_send;
+
+	rx_packet_cnt = (struct hclge_rx_com_wl *)desc[0].data;
+	dev_info(&hdev->pdev->dev,
+		 "rx_global_packet_cnt: high: 0x%x, low: 0x%x\n",
+		 rx_packet_cnt->com_wl.high, rx_packet_cnt->com_wl.low);
+	dev_info(&hdev->pdev->dev, "\n");
+
+	if (!hnae3_dev_dcb_supported(hdev)) {
+		dev_info(&hdev->pdev->dev,
+			 "Only DCB-supported dev supports rx priv wl\n");
+		return;
+	}
 	cmd = HCLGE_OPC_RX_PRIV_WL_ALLOC;
 	hclge_cmd_setup_basic_desc(&desc[0], cmd, true);
 	desc[0].flag |= cpu_to_le16(HCLGE_CMD_FLAG_NEXT);
@@ -723,7 +769,6 @@ static void hclge_dbg_dump_qos_buf_cfg(struct hclge_dev *hdev)
 	if (ret)
 		goto err_qos_cmd_send;
 
-	dev_info(&hdev->pdev->dev, "\n");
 	rx_priv_wl = (struct hclge_rx_priv_wl_buf *)desc[0].data;
 	for (i = 0; i < HCLGE_TC_NUM_ONE_DESC; i++)
 		dev_info(&hdev->pdev->dev,
@@ -758,29 +803,6 @@ static void hclge_dbg_dump_qos_buf_cfg(struct hclge_dev *hdev)
 			 "rx_com_thrd_tc_%d: high: 0x%x, low: 0x%x\n", i + 4,
 			 rx_com_thrd->com_thrd[i].high,
 			 rx_com_thrd->com_thrd[i].low);
-
-	cmd = HCLGE_OPC_RX_COM_WL_ALLOC;
-	hclge_cmd_setup_basic_desc(desc, cmd, true);
-	ret = hclge_cmd_send(&hdev->hw, desc, 1);
-	if (ret)
-		goto err_qos_cmd_send;
-
-	rx_com_wl = (struct hclge_rx_com_wl *)desc[0].data;
-	dev_info(&hdev->pdev->dev, "\n");
-	dev_info(&hdev->pdev->dev, "rx_com_wl: high: 0x%x, low: 0x%x\n",
-		 rx_com_wl->com_wl.high, rx_com_wl->com_wl.low);
-
-	cmd = HCLGE_OPC_RX_GBL_PKT_CNT;
-	hclge_cmd_setup_basic_desc(desc, cmd, true);
-	ret = hclge_cmd_send(&hdev->hw, desc, 1);
-	if (ret)
-		goto err_qos_cmd_send;
-
-	rx_packet_cnt = (struct hclge_rx_com_wl *)desc[0].data;
-	dev_info(&hdev->pdev->dev,
-		 "rx_global_packet_cnt: high: 0x%x, low: 0x%x\n",
-		 rx_packet_cnt->com_wl.high, rx_packet_cnt->com_wl.low);
-
 	return;
 
 err_qos_cmd_send: