This patch add dump the map relation for dscp, priority and TC, and
the current tc map mode.
Signed-off-by: NGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

As some new devices may not support GRO offload and flow table director,
to support these devices, driver needs to querying capabilities of GRO
offload and flow table director from firmware. Whether the driver
supports these two features depends on capabilities.

For old device of version HNAE3_DEVICE_VERSION_V2, driver sets their
capabilities of these two features to fixed value.

Setting default features of netdev and debugfs also need to identify
whether support these two features.
Signed-off-by: NGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch uses common cmdq resource allocate/free/query APIs to replace
the old APIs in PF cmdq module and deletes the old cmdq resource APIs.
Still we kept hclge_cmd_setup_basic_desc name as a seam API to avoid too
many meaningless replacement.
Signed-off-by: NJie Wang <wangjie125@huawei.com>
Signed-off-by: NGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Return value judgment should follow the function call, so remove line
between them.
Signed-off-by: NHao Chen <chenhao288@hisilicon.com>
Signed-off-by: NGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

When we use hclge_dbg_fill_content() to fill contents with
specific format according to struct hclge_dbg_item *items,
it may cause content cover due to unreasonable items.

So add comments to explain how to avoid it.
Signed-off-by: NHao Chen <chenhao288@hisilicon.com>
Signed-off-by: NGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The argument len will not be changed in hclge_ncl_config_data_print(), it
is no need to declare as a pointer, so modify it into int type.
Signed-off-by: NGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The c language has a set of implicit type conversions, when
two variables perform bitwise or arithmetic operations.

For example, variable A (type u16/u8) -1, its output is int type variable.
u16/u8 will convert to int type implicitly before it does arithmetic
operations. So, change 1 to unsigned type.
Signed-off-by: NHao Chen <chenhao288@hisilicon.com>
Signed-off-by: NGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Use for statement to optimize some print work of function
hclge_dbg_dump_rst_info() and hclge_dbg_dump_mac_enable_status() to
improve code simplicity.
Signed-off-by: NJie Wang <wangjie125@huawei.com>
Signed-off-by: NGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The member data in struct hclge_desc is type of __le32, it needs endian
conversion before using it, and some functions of debugfs didn't do that,
so this patch fixes it.

Fixes: c0ebebb9 ("net: hns3: Add "dcb register" status information query function")
Signed-off-by: NJie Wang <wangjie125@huawei.com>
Signed-off-by: NGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This function copies strings around between multiple buffers
including a large on-stack array that causes a build warning
on 32-bit systems:

drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c: In function 'hclge_dbg_dump_tm_pg':
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c:782:1: error: the frame size of 1424 bytes is larger than 1400 bytes [-Werror=frame-larger-than=]

The function can probably be cleaned up a lot, to go back to
printing directly into the output buffer, but dynamically allocating
the structure is a simpler workaround for now.

Fixes: 04d96139 ("net: hns3: refine function hclge_dbg_dump_tm_pri()")
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The new firmware supports to divides the whole multicast MAC address space
equally to functions of all PFs, and calculates the space size of each PF
according to its function number.

To support this feature, PF driver adds querying multicast MAC address
space size from firmware and limits used number according to space size.
Signed-off-by: NGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

When the command for querying imp info is issued to the firmware,
if the firmware does not support the command, the returned value
of bd num is 0.
Add protection mechanism before alloc memory to prevent apply for
0-length memory.

Fixes: 0b198b0d ("net: hns3: refactor dump m7 info of debugfs")
Signed-off-by: Jiaran Zhang <zhangjiaran@huawei.com>
Signed-off-by: NGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

To improve flexibility, simplicity and maintainability to dump info of
every element of tm priority, add a struct hclge_dbg_item array of tm
priority and fill string of every data according to this array.
Signed-off-by: NGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

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>

Previously, the flow director counter is not enabled. To improve the
maintainability for chechking whether flow director hit or not, enable
flow director counter for each function, and add debugfs query inerface
to query the counters for each function.

The debugfs command is below:
cat fd_counter
func_id    hit_times
pf         0
vf0        0
vf1        0
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>

Add a debugfs interface for dumping ptp information, which
is helpful for debugging.
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NYufeng Mo <moyufeng@huawei.com>
Signed-off-by: NGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add debugfs support for vlan configuraion. create a single file
"vlan_config" for it, and query it by command "cat vlan_config",
return the result to userspace.

The new display style is below:
$ cat vlan_config
I_PORT_VLAN_FILTER: on
E_PORT_VLAN_FILTER: off
FUNC_ID  I_VF_VLAN_FILTER  E_VF_VLAN_FILTER  PORT_VLAN_FILTER_BYPASS
pf       off               on                off
vf0      off               on                off
FUNC_ID  PVID    ACCEPT_TAG1  ACCEPT_TAG2  ACCEPT_UNTAG1  ACCEPT_UNTAG2
pf       0       on           on           on             on
vf0      0       on           on           on             on
Signed-off-by: NJian Shen <shenjian15@huawei.com>
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NJakub Kicinski <kuba@kernel.org>

In the unlikely event that rule_cnt is zero the variable ret is
not assigned a value and function hclge_dbg_dump_fd_tcam can end
up returning an unitialized value in ret. Fix this by explicitly
setting ret to zero before the for-loop.

Addresses-Coverity: ("Uninitialized scalar variable")
Fixes: b5a0b70d ("net: hns3: refactor dump fd tcam of debugfs")
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Currently, all debugfs commands have been reconstructed, and the
debugfs file node cmd is useless. So remove this debugfs file node.
Signed-off-by: NYufeng Mo <moyufeng@huawei.com>
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

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

The display style is below:
$ cat service_task_info
local_clock: [  114.203321]
delta: 784(ms)
last_service_task_processed: 4294918512(jiffies)
last_service_task_cnt: 4
Signed-off-by: NYufeng Mo <moyufeng@huawei.com>
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

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

The display style is below:
$ cat mac_tnl_status
Recently generated mac tnl interruption:
[0111204.175437] status = 0x30
[0154120.329912] status = 0x30
Signed-off-by: Jiaran Zhang <zhangjiaran@huawei.com>
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Currently, user gets qset shaper parameters by implementing debugfs
command "echo dump qs shaper > cmd", this command will dump info in
dmesg. It's unnecessary and heavy.

As there is "tm_qset" file in tm directory for dump qset info, to
optimize these command, merge qset shaper parameters to tm_qset
file and use cat command to get them.

The display style is below:
$ cat tm_qset
ID    MAP_PRI  LINK_VLD  MODE  DWRR  IR_B  IR_U  IR_S  BS_B  BS_S  FLAG
0000     0        1      dwrr  100   150     7     0     5    20     0
0001     0        0        sp    0   150     7     0     5    20     0
Signed-off-by: NGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

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

To optimize it, create a single file "qos_buf_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_buf_cfg
tx_packet_buf_tc_0: 0x120
tx_packet_buf_tc_1: 0x120
tx_packet_buf_tc_2: 0x120
tx_packet_buf_tc_3: 0x120
tx_packet_buf_tc_4: 0x0
tx_packet_buf_tc_5: 0x0
tx_packet_buf_tc_6: 0x0
tx_packet_buf_tc_7: 0x0
......
Signed-off-by: NGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

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

To optimize it, create a single file "qos_pri_map" 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_pri_map
vlan_to_pri: 0
PRI    TC
0       0
1       1
2       2
3       3
4       0
5       1
6       2
Signed-off-by: NGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

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: NGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

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

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

The display style is below:
$ cat tc_sch_info
enabled tc number: 4
weight_offset: 14
TC    MODE  WEIGHT
0     dwrr     25
1     dwrr     25
2     dwrr     25
3     dwrr     25
4     dwrr      0
5     dwrr      0
6     dwrr      0
7     dwrr      0
Signed-off-by: NGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

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

In addition, the info of this command mixes info of qset, priority,
pg and port. Qset and priority have their own command to get info of
themself, so can remove info of qset and priority from this command.

To optimize it, create two new files "tm_pg", "tm_port" in tm directory
and use cat command to separately get info of pg and port.

The display style is below:
$ cat tm_pg
ID  PRI_MAP  MODE DWRR  C_IR_B  C_IR_U  C_IR_S  C_BS_B  C_BS_S ...
00   0x1f    dwrr  1       75       9       0      31      20  ...

$ cat tm_port
IR_B  IR_U  IR_S  BS_B  BS_S  FLAG  RATE(Mbps)
75     9     0    31    20    1     200000
Signed-off-by: NGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

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

As user can't specify queue id in cat command, driver will return info
of all queue id.

The display style is below:
$ cat tm_map
queue_id   qset_id   pri_id   tc_id
0000         0000      00       00
INDEX | TM BP QSET MAPPING:
0000  | 00000000:00000000:00000000:00000000:00000000:00000000:00000000
0256  | 00000000:00000000:00000000:00000000:00000000:00000002:00000000
0512  | 00000000:00000000:00000000:00000004:00000000:00000000:00000000
0768  | 00000000:00000008:00000000:00000000:00000000:00000000:00000000
Signed-off-by: NGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

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

The display style is below:
$ cat fd_tcam
read result tcam key x(31):
00000000
00000000
00000000
08000000
00000600
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
read result tcam key y(31):
00000000
00000000
00000000
f7ff0000
0000f900
00000000
00000000
00000000
00000000
00000000
00000000
00000000
0000fff8
Signed-off-by: NHao Chen <chenhao288@hisilicon.com>
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

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

The display style is below:
$ cat dcb
qset_id  roce_qset_mask  nic_qset_mask  qset_shaping_pass  qset_bp_status
0000           0x1            0x1             0x1               0x0
0001           0x1            0x1             0x1               0x0
0002           0x1            0x1             0x1               0x0
0003           0x1            0x1             0x1               0x0
0004           0x1            0x1             0x1               0x0
0005           0x1            0x1             0x1               0x0
0006           0x1            0x1             0x1               0x0
0007           0x1            0x1             0x1               0x0
pri_id  pri_mask  pri_cshaping_pass  pri_pshaping_pass
000       0x1           0x0                0x1
001       0x1           0x0                0x0
002       0x1           0x0                0x0
003       0x1           0x0                0x0
004       0x1           0x0                0x0
005       0x1           0x0                0x0
006       0x1           0x0                0x0
007       0x1           0x0                0x0
pg_id  pg_mask  pg_cshaping_pass  pg_pshaping_pass
000      0x1           0x0               0x1
Signed-off-by: NYufeng Mo <moyufeng@huawei.com>
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Currently, the debugfs command for reg is implemented by
"echo xxxx > cmd", and record the information in dmesg. It's
unnecessary and heavy. To improve it, create some files
"bios_common/ssu/igu_egu/rpu/ncsi/rtc/ppp/rcb/tqp/mac" for it,
and query it by command "cat xxx", return the result to
userspace, rather than record in dmesg.

The display style is below:
$ cat bios_common
BP_CPU_STATE: 0x0
DFX_MSIX_INFO_NIC_0: 0xc000
DFX_MSIX_INFO_NIC_1: 0x0
DFX_MSIX_INFO_NIC_2: 0x0
DFX_MSIX_INFO_NIC_3: 0x0
DFX_MSIX_INFO_ROC_0: 0xc000
DFX_MSIX_INFO_ROC_1: 0x0
DFX_MSIX_INFO_ROC_2: 0x0
DFX_MSIX_INFO_ROC_3: 0x0
Signed-off-by: NYufeng Mo <moyufeng@huawei.com>
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

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

The display style is below:
$cat ncl_config
offset | data
0x0000 | 0x00000028
0x0004 | 0x00000400
0x0008 | 0x08040201
0x000c | 0x00000000
0x0010 | 0x00040004
0x0014 | 0x00040004
0x0018 | 0x00000000
0x001c | 0x00000000
0x0020 | 0x00040004
Signed-off-by: Jiaran Zhang <zhangjiaran@huawei.com>
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Currently, the debugfs command for m7 info is implemented by
"echo xxxx > cmd", and record the information in dmesg. It's
unnecessary and heavy. To improve it, create a single file
"imp_info" for it, and query it by command "cat imp_info",
return the result to userspace, rather than record in dmesg.

The display style is below:
$cat imp_info
offset | data
0x0000 | 0x00000000  0x00000000
0x0008 | 0x00000000  0x00000000
0x0010 | 0x00000000  0x00000001
0x0018 | 0x00000000  0x00000000
0x0020 | 0x00000000  0x00000000
0x0028 | 0x00000000  0x00000000
0x0030 | 0x00000000  0x00000000
Signed-off-by: Jiaran Zhang <zhangjiaran@huawei.com>
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

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

The display style is below:
$cat reset_info
PF reset count: 0
FLR reset count: 0
GLOBAL reset count: 0
IMP reset count: 0
reset done count: 0
HW reset done count: 0
reset count: 0
reset fail count: 0
vector0 interrupt enable status: 0x1
reset interrupt source: 0x0
reset interrupt status: 0x0
RAS interrupt status:0x0
hardware reset status: 0x0
handshake status: 0x80
function reset status: 0x0

Change to the "hclge_show_rst_info" in the "hclge_reset_err_handle",
when the reset fails, display reset info immediately.
Signed-off-by: Jiaran Zhang <zhangjiaran@huawei.com>
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

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

The display style is below:
$cat interrupt_info
num_nic_msi: 65
num_roce_msi: 65
num_msi_used: 2
num_msi_left: 128
Signed-off-by: Jiaran Zhang <zhangjiaran@huawei.com>
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

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: NYufeng Mo <moyufeng@huawei.com>
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

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

The display style is below:
$ cat mng_tbl
entry  mac_addr          mask  ether  mask  vlan  mask  i_map ...
00     00:00:00:00:00:00 0     88cc   0     0000  1     0f    ...
Signed-off-by: NYufeng Mo <moyufeng@huawei.com>
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Currently, the debugfs command for mac list info is implemented
by "echo xxxx > cmd", and record the information in dmesg. It's
unnecessary and heavy. To improve it, create two files "uc" and
"mc" under directory "mac_list" for it, and query mac list info
by "cat mac_list/uc" and "mac_list/mc", return the result to
userspace, rather than record in dmesg.

The display style is below:
$ cat mac_list/uc
UC MAC_LIST:
FUNC_ID  MAC_ADDR            STATE
pf       00:18:2d:00:00:71   ACTIVE

$ cat mac_list/mc
MC MAC_LIST:
FUNC_ID  MAC_ADDR            STATE
pf       01:80:c2:00:00:21   ACTIVE
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Currently, each debugfs command needs to create a file to get
the information. To better support more debugfs commands, the
debugfs process is reconstructed, including the process of
creating dentries and files, and obtaining information.
Signed-off-by: NYufeng Mo <moyufeng@huawei.com>
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Parameter cm_buf is never used, so remove it.
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>