summaryrefslogtreecommitdiff
path: root/Documentation/networking/ethtool-netlink.rst
blob: 58473c05319fa547a7faf4fb2b084d3d8e25a20a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
=============================
Netlink interface for ethtool
=============================


Basic information
=================

Netlink interface for ethtool uses generic netlink family ``ethtool``
(userspace application should use macros ``ETHTOOL_GENL_NAME`` and
``ETHTOOL_GENL_VERSION`` defined in ``<linux/ethtool_netlink.h>`` uapi
header). This family does not use a specific header, all information in
requests and replies is passed using netlink attributes.

The ethtool netlink interface uses extended ACK for error and warning
reporting, userspace application developers are encouraged to make these
messages available to user in a suitable way.

Requests can be divided into three categories: "get" (retrieving information),
"set" (setting parameters) and "action" (invoking an action).

All "set" and "action" type requests require admin privileges
(``CAP_NET_ADMIN`` in the namespace). Most "get" type requests are allowed for
anyone but there are exceptions (where the response contains sensitive
information). In some cases, the request as such is allowed for anyone but
unprivileged users have attributes with sensitive information (e.g.
wake-on-lan password) omitted.


Conventions
===========

Attributes which represent a boolean value usually use NLA_U8 type so that we
can distinguish three states: "on", "off" and "not present" (meaning the
information is not available in "get" requests or value is not to be changed
in "set" requests). For these attributes, the "true" value should be passed as
number 1 but any non-zero value should be understood as "true" by recipient.
In the tables below, "bool" denotes NLA_U8 attributes interpreted in this way.

In the message structure descriptions below, if an attribute name is suffixed
with "+", parent nest can contain multiple attributes of the same type. This
implements an array of entries.


Request header
==============

Each request or reply message contains a nested attribute with common header.
Structure of this header is

  ==============================  ======  =============================
  ``ETHTOOL_A_HEADER_DEV_INDEX``  u32     device ifindex
  ``ETHTOOL_A_HEADER_DEV_NAME``   string  device name
  ``ETHTOOL_A_HEADER_FLAGS``      u32     flags common for all requests
  ==============================  ======  =============================

``ETHTOOL_A_HEADER_DEV_INDEX`` and ``ETHTOOL_A_HEADER_DEV_NAME`` identify the
device message relates to. One of them is sufficient in requests, if both are
used, they must identify the same device. Some requests, e.g. global string
sets, do not require device identification. Most ``GET`` requests also allow
dump requests without device identification to query the same information for
all devices providing it (each device in a separate message).

``ETHTOOL_A_HEADER_FLAGS`` is a bitmap of request flags common for all request
types. The interpretation of these flags is the same for all request types but
the flags may not apply to requests. Recognized flags are:

  =================================  ===================================
  ``ETHTOOL_FLAG_COMPACT_BITSETS``   use compact format bitsets in reply
  ``ETHTOOL_FLAG_OMIT_REPLY``        omit optional reply (_SET and _ACT)
  =================================  ===================================

New request flags should follow the general idea that if the flag is not set,
the behaviour is backward compatible, i.e. requests from old clients not aware
of the flag should be interpreted the way the client expects. A client must
not set flags it does not understand.


Bit sets
========

For short bitmaps of (reasonably) fixed length, standard ``NLA_BITFIELD32``
type is used. For arbitrary length bitmaps, ethtool netlink uses a nested
attribute with contents of one of two forms: compact (two binary bitmaps
representing bit values and mask of affected bits) and bit-by-bit (list of
bits identified by either index or name).

Verbose (bit-by-bit) bitsets allow sending symbolic names for bits together
with their values which saves a round trip (when the bitset is passed in a
request) or at least a second request (when the bitset is in a reply). This is
useful for one shot applications like traditional ethtool command. On the
other hand, long running applications like ethtool monitor (displaying
notifications) or network management daemons may prefer fetching the names
only once and using compact form to save message size. Notifications from
ethtool netlink interface always use compact form for bitsets.

A bitset can represent either a value/mask pair (``ETHTOOL_A_BITSET_NOMASK``
not set) or a single bitmap (``ETHTOOL_A_BITSET_NOMASK`` set). In requests
modifying a bitmap, the former changes the bit set in mask to values set in
value and preserves the rest; the latter sets the bits set in the bitmap and
clears the rest.

Compact form: nested (bitset) atrribute contents:

  ============================  ======  ============================
  ``ETHTOOL_A_BITSET_NOMASK``   flag    no mask, only a list
  ``ETHTOOL_A_BITSET_SIZE``     u32     number of significant bits
  ``ETHTOOL_A_BITSET_VALUE``    binary  bitmap of bit values
  ``ETHTOOL_A_BITSET_MASK``     binary  bitmap of valid bits
  ============================  ======  ============================

Value and mask must have length at least ``ETHTOOL_A_BITSET_SIZE`` bits
rounded up to a multiple of 32 bits. They consist of 32-bit words in host byte
order, words ordered from least significant to most significant (i.e. the same
way as bitmaps are passed with ioctl interface).

For compact form, ``ETHTOOL_A_BITSET_SIZE`` and ``ETHTOOL_A_BITSET_VALUE`` are
mandatory. ``ETHTOOL_A_BITSET_MASK`` attribute is mandatory if
``ETHTOOL_A_BITSET_NOMASK`` is not set (bitset represents a value/mask pair);
if ``ETHTOOL_A_BITSET_NOMASK`` is not set, ``ETHTOOL_A_BITSET_MASK`` is not
allowed (bitset represents a single bitmap.

Kernel bit set length may differ from userspace length if older application is
used on newer kernel or vice versa. If userspace bitmap is longer, an error is
issued only if the request actually tries to set values of some bits not
recognized by kernel.

Bit-by-bit form: nested (bitset) attribute contents:

 +------------------------------------+--------+-----------------------------+
 | ``ETHTOOL_A_BITSET_NOMASK``        | flag   | no mask, only a list        |
 +------------------------------------+--------+-----------------------------+
 | ``ETHTOOL_A_BITSET_SIZE``          | u32    | number of significant bits  |
 +------------------------------------+--------+-----------------------------+
 | ``ETHTOOL_A_BITSET_BITS``          | nested | array of bits               |
 +-+----------------------------------+--------+-----------------------------+
 | | ``ETHTOOL_A_BITSET_BITS_BIT+``   | nested | one bit                     |
 +-+-+--------------------------------+--------+-----------------------------+
 | | | ``ETHTOOL_A_BITSET_BIT_INDEX`` | u32    | bit index (0 for LSB)       |
 +-+-+--------------------------------+--------+-----------------------------+
 | | | ``ETHTOOL_A_BITSET_BIT_NAME``  | string | bit name                    |
 +-+-+--------------------------------+--------+-----------------------------+
 | | | ``ETHTOOL_A_BITSET_BIT_VALUE`` | flag   | present if bit is set       |
 +-+-+--------------------------------+--------+-----------------------------+

Bit size is optional for bit-by-bit form. ``ETHTOOL_A_BITSET_BITS`` nest can
only contain ``ETHTOOL_A_BITSET_BITS_BIT`` attributes but there can be an
arbitrary number of them.  A bit may be identified by its index or by its
name. When used in requests, listed bits are set to 0 or 1 according to
``ETHTOOL_A_BITSET_BIT_VALUE``, the rest is preserved. A request fails if
index exceeds kernel bit length or if name is not recognized.

When ``ETHTOOL_A_BITSET_NOMASK`` flag is present, bitset is interpreted as
a simple bitmap. ``ETHTOOL_A_BITSET_BIT_VALUE`` attributes are not used in
such case. Such bitset represents a bitmap with listed bits set and the rest
zero.

In requests, application can use either form. Form used by kernel in reply is
determined by ``ETHTOOL_FLAG_COMPACT_BITSETS`` flag in flags field of request
header. Semantics of value and mask depends on the attribute.


List of message types
=====================

All constants identifying message types use ``ETHTOOL_CMD_`` prefix and suffix
according to message purpose:

  ==============    ======================================
  ``_GET``          userspace request to retrieve data
  ``_SET``          userspace request to set data
  ``_ACT``          userspace request to perform an action
  ``_GET_REPLY``    kernel reply to a ``GET`` request
  ``_SET_REPLY``    kernel reply to a ``SET`` request
  ``_ACT_REPLY``    kernel reply to an ``ACT`` request
  ``_NTF``          kernel notification
  ==============    ======================================

Userspace to kernel:

  ===================================== ================================
  ``ETHTOOL_MSG_STRSET_GET``            get string set
  ``ETHTOOL_MSG_LINKINFO_GET``          get link settings
  ``ETHTOOL_MSG_LINKINFO_SET``          set link settings
  ``ETHTOOL_MSG_LINKMODES_GET``         get link modes info
  ``ETHTOOL_MSG_LINKMODES_SET``         set link modes info
  ``ETHTOOL_MSG_LINKSTATE_GET``         get link state
  ``ETHTOOL_MSG_DEBUG_GET``             get debugging settings
  ``ETHTOOL_MSG_DEBUG_SET``             set debugging settings
  ===================================== ================================

Kernel to userspace:

  ===================================== ================================
  ``ETHTOOL_MSG_STRSET_GET_REPLY``      string set contents
  ``ETHTOOL_MSG_LINKINFO_GET_REPLY``    link settings
  ``ETHTOOL_MSG_LINKINFO_NTF``          link settings notification
  ``ETHTOOL_MSG_LINKMODES_GET_REPLY``   link modes info
  ``ETHTOOL_MSG_LINKMODES_NTF``         link modes notification
  ``ETHTOOL_MSG_LINKSTATE_GET_REPLY``   link state info
  ``ETHTOOL_MSG_DEBUG_GET_REPLY``       debugging settings
  ===================================== ================================

``GET`` requests are sent by userspace applications to retrieve device
information. They usually do not contain any message specific attributes.
Kernel replies with corresponding "GET_REPLY" message. For most types, ``GET``
request with ``NLM_F_DUMP`` and no device identification can be used to query
the information for all devices supporting the request.

If the data can be also modified, corresponding ``SET`` message with the same
layout as corresponding ``GET_REPLY`` is used to request changes. Only
attributes where a change is requested are included in such request (also, not
all attributes may be changed). Replies to most ``SET`` request consist only
of error code and extack; if kernel provides additional data, it is sent in
the form of corresponding ``SET_REPLY`` message which can be suppressed by
setting ``ETHTOOL_FLAG_OMIT_REPLY`` flag in request header.

Data modification also triggers sending a ``NTF`` message with a notification.
These usually bear only a subset of attributes which was affected by the
change. The same notification is issued if the data is modified using other
means (mostly ioctl ethtool interface). Unlike notifications from ethtool
netlink code which are only sent if something actually changed, notifications
triggered by ioctl interface may be sent even if the request did not actually
change any data.

``ACT`` messages request kernel (driver) to perform a specific action. If some
information is reported by kernel (which can be suppressed by setting
``ETHTOOL_FLAG_OMIT_REPLY`` flag in request header), the reply takes form of
an ``ACT_REPLY`` message. Performing an action also triggers a notification
(``NTF`` message).

Later sections describe the format and semantics of these messages.


STRSET_GET
==========

Requests contents of a string set as provided by ioctl commands
``ETHTOOL_GSSET_INFO`` and ``ETHTOOL_GSTRINGS.`` String sets are not user
writeable so that the corresponding ``STRSET_SET`` message is only used in
kernel replies. There are two types of string sets: global (independent of
a device, e.g. device feature names) and device specific (e.g. device private
flags).

Request contents:

 +---------------------------------------+--------+------------------------+
 | ``ETHTOOL_A_STRSET_HEADER``           | nested | request header         |
 +---------------------------------------+--------+------------------------+
 | ``ETHTOOL_A_STRSET_STRINGSETS``       | nested | string set to request  |
 +-+-------------------------------------+--------+------------------------+
 | | ``ETHTOOL_A_STRINGSETS_STRINGSET+`` | nested | one string set         |
 +-+-+-----------------------------------+--------+------------------------+
 | | | ``ETHTOOL_A_STRINGSET_ID``        | u32    | set id                 |
 +-+-+-----------------------------------+--------+------------------------+

Kernel response contents:

 +---------------------------------------+--------+-----------------------+
 | ``ETHTOOL_A_STRSET_HEADER``           | nested | reply header          |
 +---------------------------------------+--------+-----------------------+
 | ``ETHTOOL_A_STRSET_STRINGSETS``       | nested | array of string sets  |
 +-+-------------------------------------+--------+-----------------------+
 | | ``ETHTOOL_A_STRINGSETS_STRINGSET+`` | nested | one string set        |
 +-+-+-----------------------------------+--------+-----------------------+
 | | | ``ETHTOOL_A_STRINGSET_ID``        | u32    | set id                |
 +-+-+-----------------------------------+--------+-----------------------+
 | | | ``ETHTOOL_A_STRINGSET_COUNT``     | u32    | number of strings     |
 +-+-+-----------------------------------+--------+-----------------------+
 | | | ``ETHTOOL_A_STRINGSET_STRINGS``   | nested | array of strings      |
 +-+-+-+---------------------------------+--------+-----------------------+
 | | | | ``ETHTOOL_A_STRINGS_STRING+``   | nested | one string            |
 +-+-+-+-+-------------------------------+--------+-----------------------+
 | | | | | ``ETHTOOL_A_STRING_INDEX``    | u32    | string index          |
 +-+-+-+-+-------------------------------+--------+-----------------------+
 | | | | | ``ETHTOOL_A_STRING_VALUE``    | string | string value          |
 +-+-+-+-+-------------------------------+--------+-----------------------+
 | ``ETHTOOL_A_STRSET_COUNTS_ONLY``      | flag   | return only counts    |
 +---------------------------------------+--------+-----------------------+

Device identification in request header is optional. Depending on its presence
a and ``NLM_F_DUMP`` flag, there are three type of ``STRSET_GET`` requests:

 - no ``NLM_F_DUMP,`` no device: get "global" stringsets
 - no ``NLM_F_DUMP``, with device: get string sets related to the device
 - ``NLM_F_DUMP``, no device: get device related string sets for all devices

If there is no ``ETHTOOL_A_STRSET_STRINGSETS`` array, all string sets of
requested type are returned, otherwise only those specified in the request.
Flag ``ETHTOOL_A_STRSET_COUNTS_ONLY`` tells kernel to only return string
counts of the sets, not the actual strings.


LINKINFO_GET
============

Requests link settings as provided by ``ETHTOOL_GLINKSETTINGS`` except for
link modes and autonegotiation related information. The request does not use
any attributes.

Request contents:

  ====================================  ======  ==========================
  ``ETHTOOL_A_LINKINFO_HEADER``         nested  request header
  ====================================  ======  ==========================

Kernel response contents:

  ====================================  ======  ==========================
  ``ETHTOOL_A_LINKINFO_HEADER``         nested  reply header
  ``ETHTOOL_A_LINKINFO_PORT``           u8      physical port
  ``ETHTOOL_A_LINKINFO_PHYADDR``        u8      phy MDIO address
  ``ETHTOOL_A_LINKINFO_TP_MDIX``        u8      MDI(-X) status
  ``ETHTOOL_A_LINKINFO_TP_MDIX_CTRL``   u8      MDI(-X) control
  ``ETHTOOL_A_LINKINFO_TRANSCEIVER``    u8      transceiver
  ====================================  ======  ==========================

Attributes and their values have the same meaning as matching members of the
corresponding ioctl structures.

``LINKINFO_GET`` allows dump requests (kernel returns reply message for all
devices supporting the request).


LINKINFO_SET
============

``LINKINFO_SET`` request allows setting some of the attributes reported by
``LINKINFO_GET``.

Request contents:

  ====================================  ======  ==========================
  ``ETHTOOL_A_LINKINFO_HEADER``         nested  request header
  ``ETHTOOL_A_LINKINFO_PORT``           u8      physical port
  ``ETHTOOL_A_LINKINFO_PHYADDR``        u8      phy MDIO address
  ``ETHTOOL_A_LINKINFO_TP_MDIX_CTRL``   u8      MDI(-X) control
  ====================================  ======  ==========================

MDI(-X) status and transceiver cannot be set, request with the corresponding
attributes is rejected.


LINKMODES_GET
=============

Requests link modes (supported, advertised and peer advertised) and related
information (autonegotiation status, link speed and duplex) as provided by
``ETHTOOL_GLINKSETTINGS``. The request does not use any attributes.

Request contents:

  ====================================  ======  ==========================
  ``ETHTOOL_A_LINKMODES_HEADER``        nested  request header
  ====================================  ======  ==========================

Kernel response contents:

  ====================================  ======  ==========================
  ``ETHTOOL_A_LINKMODES_HEADER``        nested  reply header
  ``ETHTOOL_A_LINKMODES_AUTONEG``       u8      autonegotiation status
  ``ETHTOOL_A_LINKMODES_OURS``          bitset  advertised link modes
  ``ETHTOOL_A_LINKMODES_PEER``          bitset  partner link modes
  ``ETHTOOL_A_LINKMODES_SPEED``         u32     link speed (Mb/s)
  ``ETHTOOL_A_LINKMODES_DUPLEX``        u8      duplex mode
  ====================================  ======  ==========================

For ``ETHTOOL_A_LINKMODES_OURS``, value represents advertised modes and mask
represents supported modes. ``ETHTOOL_A_LINKMODES_PEER`` in the reply is a bit
list.

``LINKMODES_GET`` allows dump requests (kernel returns reply messages for all
devices supporting the request).


LINKMODES_SET
=============

Request contents:

  ====================================  ======  ==========================
  ``ETHTOOL_A_LINKMODES_HEADER``        nested  request header
  ``ETHTOOL_A_LINKMODES_AUTONEG``       u8      autonegotiation status
  ``ETHTOOL_A_LINKMODES_OURS``          bitset  advertised link modes
  ``ETHTOOL_A_LINKMODES_PEER``          bitset  partner link modes
  ``ETHTOOL_A_LINKMODES_SPEED``         u32     link speed (Mb/s)
  ``ETHTOOL_A_LINKMODES_DUPLEX``        u8      duplex mode
  ====================================  ======  ==========================

``ETHTOOL_A_LINKMODES_OURS`` bit set allows setting advertised link modes. If
autonegotiation is on (either set now or kept from before), advertised modes
are not changed (no ``ETHTOOL_A_LINKMODES_OURS`` attribute) and at least one
of speed and duplex is specified, kernel adjusts advertised modes to all
supported modes matching speed, duplex or both (whatever is specified). This
autoselection is done on ethtool side with ioctl interface, netlink interface
is supposed to allow requesting changes without knowing what exactly kernel
supports.


LINKSTATE_GET
=============

Requests link state information. At the moment, only link up/down flag (as
provided by ``ETHTOOL_GLINK`` ioctl command) is provided but some future
extensions are planned (e.g. link down reason). This request does not have any
attributes.

Request contents:

  ====================================  ======  ==========================
  ``ETHTOOL_A_LINKSTATE_HEADER``        nested  request header
  ====================================  ======  ==========================

Kernel response contents:

  ====================================  ======  ==========================
  ``ETHTOOL_A_LINKSTATE_HEADER``        nested  reply header
  ``ETHTOOL_A_LINKSTATE_LINK``          bool    link state (up/down)
  ====================================  ======  ==========================

For most NIC drivers, the value of ``ETHTOOL_A_LINKSTATE_LINK`` returns
carrier flag provided by ``netif_carrier_ok()`` but there are drivers which
define their own handler.

``LINKSTATE_GET`` allows dump requests (kernel returns reply messages for all
devices supporting the request).


DEBUG_GET
=========

Requests debugging settings of a device. At the moment, only message mask is
provided.

Request contents:

  ====================================  ======  ==========================
  ``ETHTOOL_A_DEBUG_HEADER``            nested  request header
  ====================================  ======  ==========================

Kernel response contents:

  ====================================  ======  ==========================
  ``ETHTOOL_A_DEBUG_HEADER``            nested  reply header
  ``ETHTOOL_A_DEBUG_MSGMASK``           bitset  message mask
  ====================================  ======  ==========================

The message mask (``ETHTOOL_A_DEBUG_MSGMASK``) is equal to message level as
provided by ``ETHTOOL_GMSGLVL`` and set by ``ETHTOOL_SMSGLVL`` in ioctl
interface. While it is called message level there for historical reasons, most
drivers and almost all newer drivers use it as a mask of enabled message
classes (represented by ``NETIF_MSG_*`` constants); therefore netlink
interface follows its actual use in practice.

``DEBUG_GET`` allows dump requests (kernel returns reply messages for all
devices supporting the request).


DEBUG_SET
=========

Set or update debugging settings of a device. At the moment, only message mask
is supported.

Request contents:

  ====================================  ======  ==========================
  ``ETHTOOL_A_DEBUG_HEADER``            nested  request header
  ``ETHTOOL_A_DEBUG_MSGMASK``           bitset  message mask
  ====================================  ======  ==========================

``ETHTOOL_A_DEBUG_MSGMASK`` bit set allows setting or modifying mask of
enabled debugging message types for the device.


Request translation
===================

The following table maps ioctl commands to netlink commands providing their
functionality. Entries with "n/a" in right column are commands which do not
have their netlink replacement yet.

  =================================== =====================================
  ioctl command                       netlink command
  =================================== =====================================
  ``ETHTOOL_GSET``                    ``ETHTOOL_MSG_LINKINFO_GET``
                                      ``ETHTOOL_MSG_LINKMODES_GET``
  ``ETHTOOL_SSET``                    ``ETHTOOL_MSG_LINKINFO_SET``
                                      ``ETHTOOL_MSG_LINKMODES_SET``
  ``ETHTOOL_GDRVINFO``                n/a
  ``ETHTOOL_GREGS``                   n/a
  ``ETHTOOL_GWOL``                    n/a
  ``ETHTOOL_SWOL``                    n/a
  ``ETHTOOL_GMSGLVL``                 ``ETHTOOL_MSG_DEBUG_GET``
  ``ETHTOOL_SMSGLVL``                 ``ETHTOOL_MSG_DEBUG_SET``
  ``ETHTOOL_NWAY_RST``                n/a
  ``ETHTOOL_GLINK``                   ``ETHTOOL_MSG_LINKSTATE_GET``
  ``ETHTOOL_GEEPROM``                 n/a
  ``ETHTOOL_SEEPROM``                 n/a
  ``ETHTOOL_GCOALESCE``               n/a
  ``ETHTOOL_SCOALESCE``               n/a
  ``ETHTOOL_GRINGPARAM``              n/a
  ``ETHTOOL_SRINGPARAM``              n/a
  ``ETHTOOL_GPAUSEPARAM``             n/a
  ``ETHTOOL_SPAUSEPARAM``             n/a
  ``ETHTOOL_GRXCSUM``                 n/a
  ``ETHTOOL_SRXCSUM``                 n/a
  ``ETHTOOL_GTXCSUM``                 n/a
  ``ETHTOOL_STXCSUM``                 n/a
  ``ETHTOOL_GSG``                     n/a
  ``ETHTOOL_SSG``                     n/a
  ``ETHTOOL_TEST``                    n/a
  ``ETHTOOL_GSTRINGS``                ``ETHTOOL_MSG_STRSET_GET``
  ``ETHTOOL_PHYS_ID``                 n/a
  ``ETHTOOL_GSTATS``                  n/a
  ``ETHTOOL_GTSO``                    n/a
  ``ETHTOOL_STSO``                    n/a
  ``ETHTOOL_GPERMADDR``               rtnetlink ``RTM_GETLINK``
  ``ETHTOOL_GUFO``                    n/a
  ``ETHTOOL_SUFO``                    n/a
  ``ETHTOOL_GGSO``                    n/a
  ``ETHTOOL_SGSO``                    n/a
  ``ETHTOOL_GFLAGS``                  n/a
  ``ETHTOOL_SFLAGS``                  n/a
  ``ETHTOOL_GPFLAGS``                 n/a
  ``ETHTOOL_SPFLAGS``                 n/a
  ``ETHTOOL_GRXFH``                   n/a
  ``ETHTOOL_SRXFH``                   n/a
  ``ETHTOOL_GGRO``                    n/a
  ``ETHTOOL_SGRO``                    n/a
  ``ETHTOOL_GRXRINGS``                n/a
  ``ETHTOOL_GRXCLSRLCNT``             n/a
  ``ETHTOOL_GRXCLSRULE``              n/a
  ``ETHTOOL_GRXCLSRLALL``             n/a
  ``ETHTOOL_SRXCLSRLDEL``             n/a
  ``ETHTOOL_SRXCLSRLINS``             n/a
  ``ETHTOOL_FLASHDEV``                n/a
  ``ETHTOOL_RESET``                   n/a
  ``ETHTOOL_SRXNTUPLE``               n/a
  ``ETHTOOL_GRXNTUPLE``               n/a
  ``ETHTOOL_GSSET_INFO``              ``ETHTOOL_MSG_STRSET_GET``
  ``ETHTOOL_GRXFHINDIR``              n/a
  ``ETHTOOL_SRXFHINDIR``              n/a
  ``ETHTOOL_GFEATURES``               n/a
  ``ETHTOOL_SFEATURES``               n/a
  ``ETHTOOL_GCHANNELS``               n/a
  ``ETHTOOL_SCHANNELS``               n/a
  ``ETHTOOL_SET_DUMP``                n/a
  ``ETHTOOL_GET_DUMP_FLAG``           n/a
  ``ETHTOOL_GET_DUMP_DATA``           n/a
  ``ETHTOOL_GET_TS_INFO``             n/a
  ``ETHTOOL_GMODULEINFO``             n/a
  ``ETHTOOL_GMODULEEEPROM``           n/a
  ``ETHTOOL_GEEE``                    n/a
  ``ETHTOOL_SEEE``                    n/a
  ``ETHTOOL_GRSSH``                   n/a
  ``ETHTOOL_SRSSH``                   n/a
  ``ETHTOOL_GTUNABLE``                n/a
  ``ETHTOOL_STUNABLE``                n/a
  ``ETHTOOL_GPHYSTATS``               n/a
  ``ETHTOOL_PERQUEUE``                n/a
  ``ETHTOOL_GLINKSETTINGS``           ``ETHTOOL_MSG_LINKINFO_GET``
                                      ``ETHTOOL_MSG_LINKMODES_GET``
  ``ETHTOOL_SLINKSETTINGS``           ``ETHTOOL_MSG_LINKINFO_SET``
                                      ``ETHTOOL_MSG_LINKMODES_SET``
  ``ETHTOOL_PHY_GTUNABLE``            n/a
  ``ETHTOOL_PHY_STUNABLE``            n/a
  ``ETHTOOL_GFECPARAM``               n/a
  ``ETHTOOL_SFECPARAM``               n/a
  =================================== =====================================