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net: hns3: refactor dump loopback of debugfs

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Currently, the debugfs command for loopback is implemented by
"echo xxxx > cmd", and record the information in dmesg. It's
unnecessary and heavy. To improve it, create a single file
"loopback" for it, and query it by command "cat loopback",
return the result to userspace, rather than record in dmesg.

The display style is below:
$ cat loopback
mac id: 0
app loopback: off
serdes serial loopback: off
serdes parallel loopback: off

Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yufeng Mo 2021-05-14 11:25:16 +08:00 committed by David S. Miller
parent 8ddfd9c46e
commit d658ff34dd
3 changed files with 33 additions and 20 deletions
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1
drivers/net/ethernet/hisilicon/hns3/hnae3.h
View File

@ -260,6 +260,7 @@ enum hnae3_dbg_cmd {
HNAE3_DBG_CMD_MAC_UC,
HNAE3_DBG_CMD_MAC_MC,
HNAE3_DBG_CMD_MNG_TBL,
HNAE3_DBG_CMD_LOOPBACK,
HNAE3_DBG_CMD_UNKNOWN,
};

8
drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
View File

@ -97,6 +97,13 @@ static struct hns3_dbg_cmd_info hns3_dbg_cmd[] = {
.buf_len = HNS3_DBG_READ_LEN,
.init = hns3_dbg_common_file_init,
},
{
.name = "loopback",
.cmd = HNAE3_DBG_CMD_LOOPBACK,
.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[] = {
@ -495,7 +502,6 @@ static void hns3_dbg_help(struct hnae3_handle *h)
dev_info(&h->pdev->dev, "dump m7 info\n");
dev_info(&h->pdev->dev, "dump ncl_config <offset> <length>(in hex)\n");
dev_info(&h->pdev->dev, "dump mac tnl status\n");
dev_info(&h->pdev->dev, "dump loopback\n");
dev_info(&h->pdev->dev, "dump qs shaper [qs id]\n");
dev_info(&h->pdev->dev, "dump intr\n");

44
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c
View File

@ -8,6 +8,7 @@
#include "hclge_tm.h"
#include "hnae3.h"
static const char * const state_str[] = { "off", "on" };
static const char * const hclge_mac_state_str[] = {
"TO_ADD", "TO_DEL", "ACTIVE"
};
@ -1566,32 +1567,34 @@ static void hclge_dbg_dump_ncl_config(struct hclge_dev *hdev,
}
}
static void hclge_dbg_dump_loopback(struct hclge_dev *hdev)
static int hclge_dbg_dump_loopback(struct hclge_dev *hdev, char *buf, int len)
{
struct phy_device *phydev = hdev->hw.mac.phydev;
struct hclge_config_mac_mode_cmd *req_app;
struct hclge_common_lb_cmd *req_common;
struct hclge_desc desc;
u8 loopback_en;
int pos = 0;
int ret;
req_app = (struct hclge_config_mac_mode_cmd *)desc.data;
req_common = (struct hclge_common_lb_cmd *)desc.data;
dev_info(&hdev->pdev->dev, "mac id: %u\n", hdev->hw.mac.mac_id);
pos += scnprintf(buf + pos, len - pos, "mac id: %u\n",
hdev->hw.mac.mac_id);
hclge_cmd_setup_basic_desc(&desc, HCLGE_OPC_CONFIG_MAC_MODE, true);
ret = hclge_cmd_send(&hdev->hw, &desc, 1);
if (ret) {
dev_err(&hdev->pdev->dev,
"failed to dump app loopback status, ret = %d\n", ret);
return;
return ret;
}
loopback_en = hnae3_get_bit(le32_to_cpu(req_app->txrx_pad_fcs_loop_en),
HCLGE_MAC_APP_LP_B);
dev_info(&hdev->pdev->dev, "app loopback: %s\n",
loopback_en ? "on" : "off");
pos += scnprintf(buf + pos, len - pos, "app loopback: %s\n",
state_str[loopback_en]);
hclge_cmd_setup_basic_desc(&desc, HCLGE_OPC_COMMON_LOOPBACK, true);
ret = hclge_cmd_send(&hdev->hw, &desc, 1);
@ -1599,27 +1602,30 @@ static void hclge_dbg_dump_loopback(struct hclge_dev *hdev)
dev_err(&hdev->pdev->dev,
"failed to dump common loopback status, ret = %d\n",
ret);
return;
return ret;
}
loopback_en = req_common->enable & HCLGE_CMD_SERDES_SERIAL_INNER_LOOP_B;
dev_info(&hdev->pdev->dev, "serdes serial loopback: %s\n",
loopback_en ? "on" : "off");
pos += scnprintf(buf + pos, len - pos, "serdes serial loopback: %s\n",
state_str[loopback_en]);
loopback_en = req_common->enable &
HCLGE_CMD_SERDES_PARALLEL_INNER_LOOP_B;
dev_info(&hdev->pdev->dev, "serdes parallel loopback: %s\n",
loopback_en ? "on" : "off");
HCLGE_CMD_SERDES_PARALLEL_INNER_LOOP_B ? 1 : 0;
pos += scnprintf(buf + pos, len - pos, "serdes parallel loopback: %s\n",
state_str[loopback_en]);
if (phydev) {
dev_info(&hdev->pdev->dev, "phy loopback: %s\n",
phydev->loopback_enabled ? "on" : "off");
loopback_en = phydev->loopback_enabled;
pos += scnprintf(buf + pos, len - pos, "phy loopback: %s\n",
state_str[loopback_en]);
} else if (hnae3_dev_phy_imp_supported(hdev)) {
loopback_en = req_common->enable &
HCLGE_CMD_GE_PHY_INNER_LOOP_B;
dev_info(&hdev->pdev->dev, "phy loopback: %s\n",
loopback_en ? "on" : "off");
pos += scnprintf(buf + pos, len - pos, "phy loopback: %s\n",
state_str[loopback_en]);
}
return 0;
}
/* hclge_dbg_dump_mac_tnl_status: print message about mac tnl interrupt
@ -1785,7 +1791,6 @@ int hclge_dbg_run_cmd(struct hnae3_handle *handle, const char *cmd_buf)
{
#define DUMP_REG "dump reg"
#define DUMP_TM_MAP "dump tm map"
#define DUMP_LOOPBACK "dump loopback"
#define DUMP_INTERRUPT "dump intr"
struct hclge_vport *vport = hclge_get_vport(handle);
@ -1818,9 +1823,6 @@ int hclge_dbg_run_cmd(struct hnae3_handle *handle, const char *cmd_buf)
&cmd_buf[sizeof("dump ncl_config")]);
} else if (strncmp(cmd_buf, "dump mac tnl status", 19) == 0) {
hclge_dbg_dump_mac_tnl_status(hdev);
} else if (strncmp(cmd_buf, DUMP_LOOPBACK,
strlen(DUMP_LOOPBACK)) == 0) {
hclge_dbg_dump_loopback(hdev);
} else if (strncmp(cmd_buf, "dump qs shaper", 14) == 0) {
hclge_dbg_dump_qs_shaper(hdev,
&cmd_buf[sizeof("dump qs shaper")]);
@ -1860,6 +1862,10 @@ static const struct hclge_dbg_func hclge_dbg_cmd_func[] = {
.cmd = HNAE3_DBG_CMD_MNG_TBL,
.dbg_dump = hclge_dbg_dump_mng_table,
},
{
.cmd = HNAE3_DBG_CMD_LOOPBACK,
.dbg_dump = hclge_dbg_dump_loopback,
},
};
int hclge_dbg_read_cmd(struct hnae3_handle *handle, enum hnae3_dbg_cmd cmd,