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

mainline inclusion
from mainline-master
commit d59daf6a
category: feature
bugzilla: 173966
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d59daf6a4ceedf342f349e94f1300e1598213252

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

This patch adds support of dumping MAC umv counter in debugfs,
which will be helpful for debugging.

The display style is below:
$ cat umv_info
num_alloc_vport  : 2
max_umv_size     : 256
wanted_umv_size  : 256
priv_umv_size    : 85
share_umv_size   : 86
vport(0) used_umv_num : 1
vport(1) used_umv_num : 1
Signed-off-by: NJian Shen <shenjian15@huawei.com>
Signed-off-by: NGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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/hnae3.h

@@ -292,6 +292,7 @@ enum hnae3_dbg_cmd {
 	HNAE3_DBG_CMD_FD_COUNTER,
 	HNAE3_DBG_CMD_MAC_TNL_STATUS,
 	HNAE3_DBG_CMD_SERV_INFO,
+	HNAE3_DBG_CMD_UMV_INFO,
 	HNAE3_DBG_CMD_UNKNOWN,
 };
 

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

@@ -330,6 +330,13 @@ static struct hns3_dbg_cmd_info hns3_dbg_cmd[] = {
 		.buf_len = HNS3_DBG_READ_LEN,
 		.init = hns3_dbg_common_file_init,
 	},
+	{
+		.name = "umv_info",
+		.cmd = HNAE3_DBG_CMD_UMV_INFO,
+		.dentry = HNS3_DBG_DENTRY_COMMON,
+		.buf_len = HNS3_DBG_READ_LEN,
+		.init = hns3_dbg_common_file_init,
+	},
 };
 
 static struct hns3_dbg_cap_info hns3_dbg_cap[] = {

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

@@ -1927,6 +1927,36 @@ static void hclge_dbg_dump_mac_list(struct hclge_dev *hdev, char *buf, int len,
 	}
 }
 
+static int hclge_dbg_dump_umv_info(struct hclge_dev *hdev, char *buf, int len)
+{
+	u8 func_num = pci_num_vf(hdev->pdev) + 1;
+	struct hclge_vport *vport;
+	int pos = 0;
+	u8 i;
+
+	pos += scnprintf(buf, len, "num_alloc_vport   : %u\n",
+			  hdev->num_alloc_vport);
+	pos += scnprintf(buf + pos, len - pos, "max_umv_size     : %u\n",
+			 hdev->max_umv_size);
+	pos += scnprintf(buf + pos, len - pos, "wanted_umv_size  : %u\n",
+			 hdev->wanted_umv_size);
+	pos += scnprintf(buf + pos, len - pos, "priv_umv_size    : %u\n",
+			 hdev->priv_umv_size);
+
+	mutex_lock(&hdev->vport_lock);
+	pos += scnprintf(buf + pos, len - pos, "share_umv_size   : %u\n",
+			 hdev->share_umv_size);
+	for (i = 0; i < func_num; i++) {
+		vport = &hdev->vport[i];
+		pos += scnprintf(buf + pos, len - pos,
+				 "vport(%u) used_umv_num : %u\n",
+				 i, vport->used_umv_num);
+	}
+	mutex_unlock(&hdev->vport_lock);
+
+	return 0;
+}
+
 static int hclge_get_vlan_rx_offload_cfg(struct hclge_dev *hdev, u8 vf_id,
 					 struct hclge_dbg_vlan_cfg *vlan_cfg)
 {
@@ -2412,6 +2442,10 @@ static const struct hclge_dbg_func hclge_dbg_cmd_func[] = {
 		.cmd = HNAE3_DBG_CMD_FD_COUNTER,
 		.dbg_dump = hclge_dbg_dump_fd_counter,
 	},
+	{
+		.cmd = HNAE3_DBG_CMD_UMV_INFO,
+		.dbg_dump = hclge_dbg_dump_umv_info,
+	},
 };
 
 int hclge_dbg_read_cmd(struct hnae3_handle *handle, enum hnae3_dbg_cmd cmd,