net: hns3: add support for dumping MAC umv counter in debugfs

driver inclusion
category: bugfix
bugzilla: NA
CVE: NA

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

This patch adds support of dumping MAC umv counter in debugfs,
which will be helpful for debugging.
Signed-off-by: NGuojia Liao <liaoguojia@huawei.com>
Reviewed-by: NPeng Li <lipeng321@huawei.com>
Reviewed-by: NWeiwei Deng <dengweiwei@huawei.com>
Reviewed-by: NZhaohui Zhong <zhongzhaohui@huawei.com>
Reviewed-by: NJunxin Chen <chenjunxin1@huawei.com>
Signed-off-by: NShengzui You <youshengzui@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c

@@ -265,6 +265,7 @@ static void hns3_dbg_help(struct hnae3_handle *h)
 	dev_info(&h->pdev->dev, "dump qs shaper [qs id]\n");
 	dev_info(&h->pdev->dev, "dump uc mac list <func id>\n");
 	dev_info(&h->pdev->dev, "dump mc mac list <func id>\n");
+	dev_info(&h->pdev->dev, "dump umv info <func id>\n");
 	dev_info(&h->pdev->dev, "dump vlan filter <func id>\n");
 
 	memset(printf_buf, 0, HNS3_DBG_BUF_LEN);

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

@@ -1615,6 +1615,49 @@ static int hclge_dbg_dump_mac_list(struct hclge_dev *hdev, const char *cmd_buf,
 	return 0;
 }
 
+static void hclge_dbg_dump_umv_info(struct hclge_dev *hdev, const char *cmd_buf)
+{
+	struct hclge_vport *vport;
+	u16 share_umv_size;
+	u16 priv_umv_size;
+	u16 used_umv_num;
+	u32 vf_id;
+	int ret;
+
+	ret = kstrtouint(cmd_buf, 0, &vf_id);
+	if (ret < 0) {
+		dev_err(&hdev->pdev->dev,
+			"failed to dump umv info: bad command string, ret = %d\n",
+			ret);
+		return;
+	}
+
+	if (vf_id >= hdev->num_alloc_vport) {
+		dev_err(&hdev->pdev->dev,
+			"vf id(%u) is out of range(0-%u)\n", vf_id,
+			hdev->num_alloc_vport - 1);
+		return;
+	}
+
+	vport = &hdev->vport[vf_id];
+	mutex_lock(&hdev->vport_lock);
+	priv_umv_size = hdev->priv_umv_size;
+	share_umv_size = hdev->share_umv_size;
+	used_umv_num = vport->used_umv_num;
+	mutex_unlock(&hdev->vport_lock);
+
+	dev_info(&hdev->pdev->dev, "num_alloc_vport  : %u\n",
+		 hdev->num_alloc_vport);
+	dev_info(&hdev->pdev->dev, "max_umv_size     : %u\n",
+		 hdev->max_umv_size);
+	dev_info(&hdev->pdev->dev, "wanted_umv_size  : %u\n",
+		 hdev->wanted_umv_size);
+	dev_info(&hdev->pdev->dev, "priv_umv_size    : %u\n", priv_umv_size);
+	dev_info(&hdev->pdev->dev, "share_umv_size   : %u\n", share_umv_size);
+	dev_info(&hdev->pdev->dev, "vport(%u) used_umv_num : %u\n",
+		 vf_id, used_umv_num);
+}
+
 static void hclge_dbg_dump_vlan_filter(struct hclge_dev *hdev,
 				       const char *cmd_buf)
 {
@@ -1672,6 +1715,7 @@ int hclge_dbg_run_cmd(struct hnae3_handle *handle, const char *cmd_buf)
 #define DUMP_REG	"dump reg"
 #define DUMP_LOOPBACK	"dump loopback"
 #define DUMP_VLAN_FILTER "dump vlan filter"
+#define DUMP_UMV_INFO "dump umv info"
 
 	struct hclge_vport *vport = hclge_get_vport(handle);
 	struct hclge_dev *hdev = vport->back;
@@ -1725,6 +1769,9 @@ int hclge_dbg_run_cmd(struct hnae3_handle *handle, const char *cmd_buf)
 		   strlen(DUMP_VLAN_FILTER)) == 0) {
 		hclge_dbg_dump_vlan_filter(hdev,
 					   &cmd_buf[sizeof(DUMP_VLAN_FILTER)]);
+	} else if (strncmp(cmd_buf, DUMP_UMV_INFO,
+		   strlen(DUMP_UMV_INFO)) == 0) {
+		hclge_dbg_dump_umv_info(hdev, &cmd_buf[sizeof(DUMP_UMV_INFO)]);
 	} else {
 		dev_info(&hdev->pdev->dev, "unknown command\n");
 		return -EINVAL;