net: hns3: refactor dump qos pause cfg of debugfs

Currently, user gets pause config by implementing debugfs command
"echo dump qos pause cfg > cmd", this command will dump info in dmesg.
It's unnecessary and heavy.

To optimize it, create a single file "qos_pause_cfg" in tm directory
and use cat command to get info. It will return info to userspace,
rather than record in dmesg.

The display style is below:
$ cat qos_pause_cfg
pause_trans_gap: 0x7f
pause_trans_time: 0xffff

Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/hisilicon/hns3/hnae3.h b/drivers/net/ethernet/hisilicon/hns3/hnae3.h
index dc6b8e3..dec3c77 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns3/hnae3.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hnae3.h
@@ -258,6 +258,7 @@ enum hnae3_dbg_cmd {
        HNAE3_DBG_CMD_TM_PG,
        HNAE3_DBG_CMD_TM_PORT,
        HNAE3_DBG_CMD_TC_SCH_INFO,
+       HNAE3_DBG_CMD_QOS_PAUSE_CFG,
        HNAE3_DBG_CMD_DEV_INFO,
        HNAE3_DBG_CMD_TX_BD,
        HNAE3_DBG_CMD_RX_BD,

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
index 1719ff8..be2cde9 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
@@ -93,6 +93,13 @@ static struct hns3_dbg_cmd_info hns3_dbg_cmd[] = {
                .init = hns3_dbg_common_file_init,
        },
        {
+               .name = "qos_pause_cfg",
+               .cmd = HNAE3_DBG_CMD_QOS_PAUSE_CFG,
+               .dentry = HNS3_DBG_DENTRY_TM,
+               .buf_len = HNS3_DBG_READ_LEN,
+               .init = hns3_dbg_common_file_init,
+       },
+       {
                .name = "dev_info",
                .cmd = HNAE3_DBG_CMD_DEV_INFO,
                .dentry = HNS3_DBG_DENTRY_COMMON,
@@ -745,7 +752,6 @@ static void hns3_dbg_help(struct hnae3_handle *h)
        if (!hns3_is_phys_func(h->pdev))
                return;
 
-       dev_info(&h->pdev->dev, "dump qos pause cfg\n");
        dev_info(&h->pdev->dev, "dump qos pri map\n");
        dev_info(&h->pdev->dev, "dump qos buf cfg\n");
        dev_info(&h->pdev->dev, "dump mac tnl status\n");

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c
index bd62103..f7864f8 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c
@@ -1028,27 +1028,29 @@ static int hclge_dbg_dump_tm_qset(struct hclge_dev *hdev, char *buf, int len)
        return 0;
 }
 
-static void hclge_dbg_dump_qos_pause_cfg(struct hclge_dev *hdev)
+static int hclge_dbg_dump_qos_pause_cfg(struct hclge_dev *hdev, char *buf,
+                                       int len)
 {
        struct hclge_cfg_pause_param_cmd *pause_param;
        struct hclge_desc desc;
+       int pos = 0;
        int ret;
 
        hclge_cmd_setup_basic_desc(&desc, HCLGE_OPC_CFG_MAC_PARA, true);
-
        ret = hclge_cmd_send(&hdev->hw, &desc, 1);
        if (ret) {
-               dev_err(&hdev->pdev->dev, "dump checksum fail, ret = %d\n",
-                       ret);
-               return;
+               dev_err(&hdev->pdev->dev,
+                       "failed to dump qos pause, ret = %d\n", ret);
+               return ret;
        }
 
        pause_param = (struct hclge_cfg_pause_param_cmd *)desc.data;
-       dev_info(&hdev->pdev->dev, "dump qos pause cfg\n");
-       dev_info(&hdev->pdev->dev, "pause_trans_gap: 0x%x\n",
-                pause_param->pause_trans_gap);
-       dev_info(&hdev->pdev->dev, "pause_trans_time: 0x%x\n",
-                le16_to_cpu(pause_param->pause_trans_time));
+
+       pos += scnprintf(buf + pos, len - pos, "pause_trans_gap: 0x%x\n",
+                        pause_param->pause_trans_gap);
+       pos += scnprintf(buf + pos, len - pos, "pause_trans_time: 0x%x\n",
+                        le16_to_cpu(pause_param->pause_trans_time));
+       return 0;
 }
 
 static void hclge_dbg_dump_qos_pri_map(struct hclge_dev *hdev)
@@ -1894,9 +1896,7 @@ int hclge_dbg_run_cmd(struct hnae3_handle *handle, const char *cmd_buf)
        struct hclge_vport *vport = hclge_get_vport(handle);
        struct hclge_dev *hdev = vport->back;
 
-       if (strncmp(cmd_buf, "dump qos pause cfg", 18) == 0) {
-               hclge_dbg_dump_qos_pause_cfg(hdev);
-       } else if (strncmp(cmd_buf, "dump qos pri map", 16) == 0) {
+       if (strncmp(cmd_buf, "dump qos pri map", 16) == 0) {
                hclge_dbg_dump_qos_pri_map(hdev);
        } else if (strncmp(cmd_buf, "dump qos buf cfg", 16) == 0) {
                hclge_dbg_dump_qos_buf_cfg(hdev);
@@ -1945,6 +1945,10 @@ static const struct hclge_dbg_func hclge_dbg_cmd_func[] = {
                .dbg_dump = hclge_dbg_dump_tc,
        },
        {
+               .cmd = HNAE3_DBG_CMD_QOS_PAUSE_CFG,
+               .dbg_dump = hclge_dbg_dump_qos_pause_cfg,
+       },
+       {
                .cmd = HNAE3_DBG_CMD_MAC_UC,
                .dbg_dump = hclge_dbg_dump_mac_uc,
        },