net: hns3: add query basic info support for VF

mainline inclusion
from mainline-master
commit 32e6d104
category: feature
bugzilla: 173966
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=32e6d104c6fe01713a039a98842e4d2f6bb505ec

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

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: NJian Shen <shenjian15@huawei.com>
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NJakub Kicinski <kuba@kernel.org>
Reviewed-by: NYongxin Li <liyongxin1@huawei.com>
Signed-off-by: NJunxin Chen <chenjunxin1@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

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

@@ -146,6 +146,9 @@ 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,
-				struct hclge_respond_to_vf_msg *resp_msg)
+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 */