net: hns3: add support for VF modify VLAN filter state

Previously, there is hardware limitation for VF to modify
the VLAN filter state, and the VLAN filter state is default
enabled. Now the limitation has been removed in some device,
so add capability flag to check whether the device supports
modify VLAN filter state. If flag on, user will be able to
modify the VLAN filter state by ethtool -K.
VF needs to send mailbox to request the PF to modify the VLAN
filter state for it.
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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

@@ -69,6 +69,7 @@ enum hclge_mbx_vlan_cfg_subcode {
 	HCLGE_MBX_VLAN_RX_OFF_CFG,	/* set rx side vlan offload */
 	HCLGE_MBX_PORT_BASE_VLAN_CFG,	/* set port based vlan configuration */
 	HCLGE_MBX_GET_PORT_BASE_VLAN_STATE,	/* get port based vlan state */
+	HCLGE_MBX_ENABLE_VLAN_FILTER,
 };
 
 enum hclge_mbx_tbl_cfg_subcode {

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

@@ -9515,8 +9515,7 @@ static bool hclge_need_enable_vport_vlan_filter(struct hclge_vport *vport)
 	return false;
 }
 
-static int hclge_enable_vport_vlan_filter(struct hclge_vport *vport,
-					  bool request_en)
+int hclge_enable_vport_vlan_filter(struct hclge_vport *vport, bool request_en)
 {
 	struct hclge_dev *hdev = vport->back;
 	bool need_en;

drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h

@@ -1107,4 +1107,5 @@ void hclge_report_hw_error(struct hclge_dev *hdev,
 void hclge_inform_vf_promisc_info(struct hclge_vport *vport);
 int hclge_dbg_dump_rst_info(struct hclge_dev *hdev, char *buf, int len);
 int hclge_push_vf_link_status(struct hclge_vport *vport);
+int hclge_enable_vport_vlan_filter(struct hclge_vport *vport, bool request_en);
 #endif

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

@@ -365,6 +365,8 @@ static int hclge_set_vf_vlan_cfg(struct hclge_vport *vport,
 			vport->port_base_vlan_cfg.state;
 		resp_msg->len = sizeof(u8);
 		return 0;
+	case HCLGE_MBX_ENABLE_VLAN_FILTER:
+		return hclge_enable_vport_vlan_filter(vport, msg_cmd->enable);
 	default:
 		return 0;
 	}

drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c

@@ -1650,6 +1650,22 @@ static void hclgevf_uninit_mac_list(struct hclgevf_dev *hdev)
 	spin_unlock_bh(&hdev->mac_table.mac_list_lock);
 }
 
+static int hclgevf_enable_vlan_filter(struct hnae3_handle *handle, bool enable)
+{
+	struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);
+	struct hnae3_ae_dev *ae_dev = hdev->ae_dev;
+	struct hclge_vf_to_pf_msg send_msg;
+
+	if (!test_bit(HNAE3_DEV_SUPPORT_VLAN_FLTR_MDF_B, ae_dev->caps))
+		return -EOPNOTSUPP;
+
+	hclgevf_build_send_msg(&send_msg, HCLGE_MBX_SET_VLAN,
+			       HCLGE_MBX_ENABLE_VLAN_FILTER);
+	send_msg.data[0] = enable ? 1 : 0;
+
+	return hclgevf_send_mbx_msg(hdev, &send_msg, true, NULL, 0);
+}
+
 static int hclgevf_set_vlan_filter(struct hnae3_handle *handle,
 				   __be16 proto, u16 vlan_id,
 				   bool is_kill)
@@ -3808,6 +3824,7 @@ static const struct hnae3_ae_ops hclgevf_ops = {
 	.get_tc_size = hclgevf_get_tc_size,
 	.get_fw_version = hclgevf_get_fw_version,
 	.set_vlan_filter = hclgevf_set_vlan_filter,
+	.enable_vlan_filter = hclgevf_enable_vlan_filter,
 	.enable_hw_strip_rxvtag = hclgevf_en_hw_strip_rxvtag,
 	.reset_event = hclgevf_reset_event,
 	.set_default_reset_request = hclgevf_set_def_reset_request,