net: hns3: add manager table initialization for hardware

The manager table is empty by default. If it is not initialized, the
management pkgs like LLDP will be dropped by hardware. Default entries
need to be added to manager table.
Signed-off-by: Fuyun Liang <liangfuyun1@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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

@@ -605,6 +605,28 @@ struct hclge_mac_vlan_mask_entry_cmd {
 	u8 rsv2[14];
 };
 
+#define HCLGE_MAC_MGR_MASK_VLAN_B		BIT(0)
+#define HCLGE_MAC_MGR_MASK_MAC_B		BIT(1)
+#define HCLGE_MAC_MGR_MASK_ETHERTYPE_B		BIT(2)
+#define HCLGE_MAC_ETHERTYPE_LLDP		0x88cc
+
+struct hclge_mac_mgr_tbl_entry_cmd {
+	u8      flags;
+	u8      resp_code;
+	__le16  vlan_tag;
+	__le32  mac_addr_hi32;
+	__le16  mac_addr_lo16;
+	__le16  rsv1;
+	__le16  ethter_type;
+	__le16  egress_port;
+	__le16  egress_queue;
+	u8      sw_port_id_aware;
+	u8      rsv2;
+	u8      i_port_bitmap;
+	u8      i_port_direction;
+	u8      rsv3[2];
+};
+
 #define HCLGE_CFG_MTA_MAC_SEL_S		0x0
 #define HCLGE_CFG_MTA_MAC_SEL_M		GENMASK(1, 0)
 #define HCLGE_CFG_MTA_MAC_EN_B		0x7

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

@@ -392,6 +392,16 @@ static const struct hclge_comm_stats_str g_mac_stats_string[] = {
 		HCLGE_MAC_STATS_FIELD_OFF(mac_rx_send_app_bad_pkt_num)}
 };
 
+static const struct hclge_mac_mgr_tbl_entry_cmd hclge_mgr_table[] = {
+	{
+		.flags = HCLGE_MAC_MGR_MASK_VLAN_B,
+		.ethter_type = cpu_to_le16(HCLGE_MAC_ETHERTYPE_LLDP),
+		.mac_addr_hi32 = cpu_to_le32(htonl(0x0180C200)),
+		.mac_addr_lo16 = cpu_to_le16(htons(0x000E)),
+		.i_port_bitmap = 0x1,
+	},
+};
+
 static int hclge_64_bit_update_stats(struct hclge_dev *hdev)
 {
 #define HCLGE_64_BIT_CMD_NUM 5
@@ -4249,6 +4259,91 @@ int hclge_rm_mc_addr_common(struct hclge_vport *vport,
 	return status;
 }
 
+static int hclge_get_mac_ethertype_cmd_status(struct hclge_dev *hdev,
+					      u16 cmdq_resp, u8 resp_code)
+{
+#define HCLGE_ETHERTYPE_SUCCESS_ADD		0
+#define HCLGE_ETHERTYPE_ALREADY_ADD		1
+#define HCLGE_ETHERTYPE_MGR_TBL_OVERFLOW	2
+#define HCLGE_ETHERTYPE_KEY_CONFLICT		3
+
+	int return_status;
+
+	if (cmdq_resp) {
+		dev_err(&hdev->pdev->dev,
+			"cmdq execute failed for get_mac_ethertype_cmd_status, status=%d.\n",
+			cmdq_resp);
+		return -EIO;
+	}
+
+	switch (resp_code) {
+	case HCLGE_ETHERTYPE_SUCCESS_ADD:
+	case HCLGE_ETHERTYPE_ALREADY_ADD:
+		return_status = 0;
+		break;
+	case HCLGE_ETHERTYPE_MGR_TBL_OVERFLOW:
+		dev_err(&hdev->pdev->dev,
+			"add mac ethertype failed for manager table overflow.\n");
+		return_status = -EIO;
+		break;
+	case HCLGE_ETHERTYPE_KEY_CONFLICT:
+		dev_err(&hdev->pdev->dev,
+			"add mac ethertype failed for key conflict.\n");
+		return_status = -EIO;
+		break;
+	default:
+		dev_err(&hdev->pdev->dev,
+			"add mac ethertype failed for undefined, code=%d.\n",
+			resp_code);
+		return_status = -EIO;
+	}
+
+	return return_status;
+}
+
+static int hclge_add_mgr_tbl(struct hclge_dev *hdev,
+			     const struct hclge_mac_mgr_tbl_entry_cmd *req)
+{
+	struct hclge_desc desc;
+	u8 resp_code;
+	u16 retval;
+	int ret;
+
+	hclge_cmd_setup_basic_desc(&desc, HCLGE_OPC_MAC_ETHTYPE_ADD, false);
+	memcpy(desc.data, req, sizeof(struct hclge_mac_mgr_tbl_entry_cmd));
+
+	ret = hclge_cmd_send(&hdev->hw, &desc, 1);
+	if (ret) {
+		dev_err(&hdev->pdev->dev,
+			"add mac ethertype failed for cmd_send, ret =%d.\n",
+			ret);
+		return ret;
+	}
+
+	resp_code = (le32_to_cpu(desc.data[0]) >> 8) & 0xff;
+	retval = le16_to_cpu(desc.retval);
+
+	return hclge_get_mac_ethertype_cmd_status(hdev, retval, resp_code);
+}
+
+static int init_mgr_tbl(struct hclge_dev *hdev)
+{
+	int ret;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(hclge_mgr_table); i++) {
+		ret = hclge_add_mgr_tbl(hdev, &hclge_mgr_table[i]);
+		if (ret) {
+			dev_err(&hdev->pdev->dev,
+				"add mac ethertype failed, ret =%d.\n",
+				ret);
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
 static void hclge_get_mac_addr(struct hnae3_handle *handle, u8 *p)
 {
 	struct hclge_vport *vport = hclge_get_vport(handle);
@@ -5271,6 +5366,12 @@ static int hclge_init_ae_dev(struct hnae3_ae_dev *ae_dev)
 		return ret;
 	}
 
+	ret = init_mgr_tbl(hdev);
+	if (ret) {
+		dev_err(&pdev->dev, "manager table init fail, ret =%d\n", ret);
+		return ret;
+	}
+
 	hclge_dcb_ops_set(hdev);
 
 	timer_setup(&hdev->service_timer, hclge_service_timer, 0);