net: hns3: add query basic info support for VF

There are some features of VF depend on PF, so it's necessary
for VF to know whether PF supports. For compatibility, modify
the mailbox HCLGE_MBX_GET_TCINFO, extend its function, use to
get the basic information of PF, including mailbox api version
and PF capabilities.
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

@@ -20,7 +20,7 @@ enum HCLGE_MBX_OPCODE {
 	HCLGE_MBX_API_NEGOTIATE,	/* (VF -> PF) negotiate API version */
 	HCLGE_MBX_GET_QINFO,		/* (VF -> PF) get queue config */
 	HCLGE_MBX_GET_QDEPTH,		/* (VF -> PF) get queue depth */
-	HCLGE_MBX_GET_TCINFO,		/* (VF -> PF) get TC config */
+	HCLGE_MBX_GET_BASIC_INFO,	/* (VF -> PF) get basic info */
 	HCLGE_MBX_GET_RETA,		/* (VF -> PF) get RETA */
 	HCLGE_MBX_GET_RSS_KEY,		/* (VF -> PF) get RSS key */
 	HCLGE_MBX_GET_MAC_ADDR,		/* (VF -> PF) get MAC addr */
@@ -85,6 +85,13 @@ struct hclge_ring_chain_param {
 	u8 int_gl_index;
 };
 
+struct hclge_basic_info {
+	u8 hw_tc_map;
+	u8 rsv;
+	u16 mbx_api_version;
+	u32 pf_caps;
+};
+
 struct hclgevf_mbx_resp_status {
 	struct mutex mbx_mutex; /* protects against contending sync cmd resp */
 	u32 origin_mbx_msg;

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

@@ -147,6 +147,9 @@ enum HNAE3_DEV_CAP_BITS {
 #define hnae3_ae_dev_rxd_adv_layout_supported(ae_dev) \
 	test_bit(HNAE3_DEV_SUPPORT_RXD_ADV_LAYOUT_B, (ae_dev)->caps)
 
+enum HNAE3_PF_CAP_BITS {
+	HNAE3_PF_SUPPORT_VLAN_FLTR_MDF_B = 0,
+};
 #define ring_ptr_move_fw(ring, p) \
 	((ring)->p = ((ring)->p + 1) % (ring)->desc_num)
 #define ring_ptr_move_bw(ring, p) \

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

@@ -384,16 +384,23 @@ static int hclge_set_vf_alive(struct hclge_vport *vport,
 	return ret;
 }
 
-static void hclge_get_vf_tcinfo(struct hclge_vport *vport,
+static void hclge_get_basic_info(struct hclge_vport *vport,
 				 struct hclge_respond_to_vf_msg *resp_msg)
 {
 	struct hnae3_knic_private_info *kinfo = &vport->nic.kinfo;
+	struct hnae3_ae_dev *ae_dev = vport->back->ae_dev;
+	struct hclge_basic_info *basic_info;
 	unsigned int i;
 
+	basic_info = (struct hclge_basic_info *)resp_msg->data;
 	for (i = 0; i < kinfo->tc_info.num_tc; i++)
-		resp_msg->data[0] |= BIT(i);
+		basic_info->hw_tc_map |= BIT(i);
 
-	resp_msg->len = sizeof(u8);
+	if (test_bit(HNAE3_DEV_SUPPORT_VLAN_FLTR_MDF_B, ae_dev->caps))
+		hnae3_set_bit(basic_info->pf_caps,
+			      HNAE3_PF_SUPPORT_VLAN_FLTR_MDF_B, 1);
+
+	resp_msg->len = HCLGE_MBX_MAX_RESP_DATA_SIZE;
 }
 
 static void hclge_get_vf_queue_info(struct hclge_vport *vport,
@@ -752,8 +759,8 @@ void hclge_mbx_handler(struct hclge_dev *hdev)
 		case HCLGE_MBX_GET_QDEPTH:
 			hclge_get_vf_queue_depth(vport, &resp_msg);
 			break;
-		case HCLGE_MBX_GET_TCINFO:
-			hclge_get_vf_tcinfo(vport, &resp_msg);
+		case HCLGE_MBX_GET_BASIC_INFO:
+			hclge_get_basic_info(vport, &resp_msg);
 			break;
 		case HCLGE_MBX_GET_LINK_STATUS:
 			ret = hclge_push_vf_link_status(vport);

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

@@ -243,23 +243,31 @@ static void hclgevf_build_send_msg(struct hclge_vf_to_pf_msg *msg, u8 code,
 	}
 }
 
-static int hclgevf_get_tc_info(struct hclgevf_dev *hdev)
+static int hclgevf_get_basic_info(struct hclgevf_dev *hdev)
 {
+	struct hnae3_ae_dev *ae_dev = hdev->ae_dev;
+	u8 resp_msg[HCLGE_MBX_MAX_RESP_DATA_SIZE];
+	struct hclge_basic_info *basic_info;
 	struct hclge_vf_to_pf_msg send_msg;
-	u8 resp_msg;
+	unsigned long caps;
 	int status;
 
-	hclgevf_build_send_msg(&send_msg, HCLGE_MBX_GET_TCINFO, 0);
-	status = hclgevf_send_mbx_msg(hdev, &send_msg, true, &resp_msg,
+	hclgevf_build_send_msg(&send_msg, HCLGE_MBX_GET_BASIC_INFO, 0);
+	status = hclgevf_send_mbx_msg(hdev, &send_msg, true, resp_msg,
 				      sizeof(resp_msg));
 	if (status) {
 		dev_err(&hdev->pdev->dev,
-			"VF request to get TC info from PF failed %d",
-			status);
+			"failed to get basic info from pf, ret = %d", status);
 		return status;
 	}
 
-	hdev->hw_tc_map = resp_msg;
+	basic_info = (struct hclge_basic_info *)resp_msg;
+
+	hdev->hw_tc_map = basic_info->hw_tc_map;
+	hdev->mbx_api_version = basic_info->mbx_api_version;
+	caps = basic_info->pf_caps;
+	if (test_bit(HNAE3_PF_SUPPORT_VLAN_FLTR_MDF_B, &caps))
+		set_bit(HNAE3_DEV_SUPPORT_VLAN_FLTR_MDF_B, ae_dev->caps);
 
 	return 0;
 }
@@ -2466,6 +2474,10 @@ static int hclgevf_configure(struct hclgevf_dev *hdev)
 {
 	int ret;
 
+	ret = hclgevf_get_basic_info(hdev);
+	if (ret)
+		return ret;
+
 	/* get current port based vlan state from PF */
 	ret = hclgevf_get_port_base_vlan_filter_state(hdev);
 	if (ret)
@@ -2481,12 +2493,7 @@ static int hclgevf_configure(struct hclgevf_dev *hdev)
 	if (ret)
 		return ret;
 
-	ret = hclgevf_get_pf_media_type(hdev);
-	if (ret)
-		return ret;
-
-	/* get tc configuration from PF */
-	return hclgevf_get_tc_info(hdev);
+	return hclgevf_get_pf_media_type(hdev);
 }
 
 static int hclgevf_alloc_hdev(struct hnae3_ae_dev *ae_dev)

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

@@ -285,6 +285,7 @@ struct hclgevf_dev {
 	struct semaphore reset_sem;	/* protect reset process */
 
 	u32 fw_version;
+	u16 mbx_api_version;
 	u16 num_tqps;		/* num task queue pairs of this VF */
 
 	u16 alloc_rss_size;	/* allocated RSS task queue */