net: hns3: add ethtool priv-flag for TX push

driver inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I4QHSV

----------------------------------------------------------------------

Add a control private flag in ethtool for enable/disable
TX push feature.
Signed-off-by: NYufeng Mo <moyufeng@huawei.com>
Signed-off-by: NGuangbin Huang <huangguangbin2@huawei.com>
Reviewed-by: NYue Haibing <yuehaibing@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

drivers/net/ethernet/hisilicon/hns3/hnae3.h

@@ -817,6 +817,7 @@ struct hnae3_roce_private_info {
 
 enum hnae3_pflag {
 	HNAE3_PFLAG_LIMIT_PROMISC,
+	HNAE3_PFLAG_PUSH_ENABLE,
 	HNAE3_PFLAG_MAX
 };
 

drivers/net/ethernet/hisilicon/hns3/hns3_enet.c

@@ -5161,8 +5161,11 @@ static void hns3_state_init(struct hnae3_handle *handle)
 
 	set_bit(HNS3_NIC_STATE_INITED, &priv->state);
 
-	if (test_bit(HNAE3_DEV_SUPPORT_TX_PUSH_B, ae_dev->caps))
+	if (test_bit(HNAE3_DEV_SUPPORT_TX_PUSH_B, ae_dev->caps)) {
 		set_bit(HNS3_NIC_STATE_TX_PUSH_ENABLE, &priv->state);
+		handle->priv_flags |= BIT(HNAE3_PFLAG_PUSH_ENABLE);
+		set_bit(HNAE3_PFLAG_PUSH_ENABLE, &handle->supported_pflags);
+	}
 
 	if (ae_dev->dev_version >= HNAE3_DEVICE_VERSION_V3)
 		set_bit(HNAE3_PFLAG_LIMIT_PROMISC, &handle->supported_pflags);

drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c

@@ -440,8 +440,25 @@ static void hns3_update_limit_promisc_mode(struct net_device *netdev,
 	hns3_request_update_promisc_mode(handle);
 }
 
+static void hns3_update_state(struct net_device *netdev,
+			      enum hns3_nic_state state, bool enable)
+{
+	struct hns3_nic_priv *priv = netdev_priv(netdev);
+
+	if (enable)
+		set_bit(state, &priv->state);
+	else
+		clear_bit(state, &priv->state);
+}
+
+static void hns3_update_push_state(struct net_device *netdev, bool enable)
+{
+	hns3_update_state(netdev, HNS3_NIC_STATE_TX_PUSH_ENABLE, enable);
+}
+
 static const struct hns3_pflag_desc hns3_priv_flags[HNAE3_PFLAG_MAX] = {
-	{ "limit_promisc",	hns3_update_limit_promisc_mode }
+	{ "limit_promisc",	hns3_update_limit_promisc_mode },
+	{ "tx_push_enable",	hns3_update_push_state }
 };
 
 static int hns3_get_sset_count(struct net_device *netdev, int stringset)