1 =============================
2 Netlink interface for ethtool
3 =============================
9 Netlink interface for ethtool uses generic netlink family ``ethtool``
10 (userspace application should use macros ``ETHTOOL_GENL_NAME`` and
11 ``ETHTOOL_GENL_VERSION`` defined in ``<linux/ethtool_netlink.h>`` uapi
12 header). This family does not use a specific header, all information in
13 requests and replies is passed using netlink attributes.
15 The ethtool netlink interface uses extended ACK for error and warning
16 reporting, userspace application developers are encouraged to make these
17 messages available to user in a suitable way.
19 Requests can be divided into three categories: "get" (retrieving information),
20 "set" (setting parameters) and "action" (invoking an action).
22 All "set" and "action" type requests require admin privileges
23 (``CAP_NET_ADMIN`` in the namespace). Most "get" type requests are allowed for
24 anyone but there are exceptions (where the response contains sensitive
25 information). In some cases, the request as such is allowed for anyone but
26 unprivileged users have attributes with sensitive information (e.g.
27 wake-on-lan password) omitted.
33 Attributes which represent a boolean value usually use NLA_U8 type so that we
34 can distinguish three states: "on", "off" and "not present" (meaning the
35 information is not available in "get" requests or value is not to be changed
36 in "set" requests). For these attributes, the "true" value should be passed as
37 number 1 but any non-zero value should be understood as "true" by recipient.
38 In the tables below, "bool" denotes NLA_U8 attributes interpreted in this way.
40 In the message structure descriptions below, if an attribute name is suffixed
41 with "+", parent nest can contain multiple attributes of the same type. This
42 implements an array of entries.
48 Each request or reply message contains a nested attribute with common header.
49 Structure of this header is
51 ============================== ====== =============================
52 ``ETHTOOL_A_HEADER_DEV_INDEX`` u32 device ifindex
53 ``ETHTOOL_A_HEADER_DEV_NAME`` string device name
54 ``ETHTOOL_A_HEADER_FLAGS`` u32 flags common for all requests
55 ============================== ====== =============================
57 ``ETHTOOL_A_HEADER_DEV_INDEX`` and ``ETHTOOL_A_HEADER_DEV_NAME`` identify the
58 device message relates to. One of them is sufficient in requests, if both are
59 used, they must identify the same device. Some requests, e.g. global string
60 sets, do not require device identification. Most ``GET`` requests also allow
61 dump requests without device identification to query the same information for
62 all devices providing it (each device in a separate message).
64 ``ETHTOOL_A_HEADER_FLAGS`` is a bitmap of request flags common for all request
65 types. The interpretation of these flags is the same for all request types but
66 the flags may not apply to requests. Recognized flags are:
68 ================================= ===================================
69 ``ETHTOOL_FLAG_COMPACT_BITSETS`` use compact format bitsets in reply
70 ``ETHTOOL_FLAG_OMIT_REPLY`` omit optional reply (_SET and _ACT)
71 ================================= ===================================
73 New request flags should follow the general idea that if the flag is not set,
74 the behaviour is backward compatible, i.e. requests from old clients not aware
75 of the flag should be interpreted the way the client expects. A client must
76 not set flags it does not understand.
82 For short bitmaps of (reasonably) fixed length, standard ``NLA_BITFIELD32``
83 type is used. For arbitrary length bitmaps, ethtool netlink uses a nested
84 attribute with contents of one of two forms: compact (two binary bitmaps
85 representing bit values and mask of affected bits) and bit-by-bit (list of
86 bits identified by either index or name).
88 Verbose (bit-by-bit) bitsets allow sending symbolic names for bits together
89 with their values which saves a round trip (when the bitset is passed in a
90 request) or at least a second request (when the bitset is in a reply). This is
91 useful for one shot applications like traditional ethtool command. On the
92 other hand, long running applications like ethtool monitor (displaying
93 notifications) or network management daemons may prefer fetching the names
94 only once and using compact form to save message size. Notifications from
95 ethtool netlink interface always use compact form for bitsets.
97 A bitset can represent either a value/mask pair (``ETHTOOL_A_BITSET_NOMASK``
98 not set) or a single bitmap (``ETHTOOL_A_BITSET_NOMASK`` set). In requests
99 modifying a bitmap, the former changes the bit set in mask to values set in
100 value and preserves the rest; the latter sets the bits set in the bitmap and
103 Compact form: nested (bitset) atrribute contents:
105 ============================ ====== ============================
106 ``ETHTOOL_A_BITSET_NOMASK`` flag no mask, only a list
107 ``ETHTOOL_A_BITSET_SIZE`` u32 number of significant bits
108 ``ETHTOOL_A_BITSET_VALUE`` binary bitmap of bit values
109 ``ETHTOOL_A_BITSET_MASK`` binary bitmap of valid bits
110 ============================ ====== ============================
112 Value and mask must have length at least ``ETHTOOL_A_BITSET_SIZE`` bits
113 rounded up to a multiple of 32 bits. They consist of 32-bit words in host byte
114 order, words ordered from least significant to most significant (i.e. the same
115 way as bitmaps are passed with ioctl interface).
117 For compact form, ``ETHTOOL_A_BITSET_SIZE`` and ``ETHTOOL_A_BITSET_VALUE`` are
118 mandatory. ``ETHTOOL_A_BITSET_MASK`` attribute is mandatory if
119 ``ETHTOOL_A_BITSET_NOMASK`` is not set (bitset represents a value/mask pair);
120 if ``ETHTOOL_A_BITSET_NOMASK`` is not set, ``ETHTOOL_A_BITSET_MASK`` is not
121 allowed (bitset represents a single bitmap.
123 Kernel bit set length may differ from userspace length if older application is
124 used on newer kernel or vice versa. If userspace bitmap is longer, an error is
125 issued only if the request actually tries to set values of some bits not
126 recognized by kernel.
128 Bit-by-bit form: nested (bitset) attribute contents:
130 +------------------------------------+--------+-----------------------------+
131 | ``ETHTOOL_A_BITSET_NOMASK`` | flag | no mask, only a list |
132 +------------------------------------+--------+-----------------------------+
133 | ``ETHTOOL_A_BITSET_SIZE`` | u32 | number of significant bits |
134 +------------------------------------+--------+-----------------------------+
135 | ``ETHTOOL_A_BITSET_BITS`` | nested | array of bits |
136 +-+----------------------------------+--------+-----------------------------+
137 | | ``ETHTOOL_A_BITSET_BITS_BIT+`` | nested | one bit |
138 +-+-+--------------------------------+--------+-----------------------------+
139 | | | ``ETHTOOL_A_BITSET_BIT_INDEX`` | u32 | bit index (0 for LSB) |
140 +-+-+--------------------------------+--------+-----------------------------+
141 | | | ``ETHTOOL_A_BITSET_BIT_NAME`` | string | bit name |
142 +-+-+--------------------------------+--------+-----------------------------+
143 | | | ``ETHTOOL_A_BITSET_BIT_VALUE`` | flag | present if bit is set |
144 +-+-+--------------------------------+--------+-----------------------------+
146 Bit size is optional for bit-by-bit form. ``ETHTOOL_A_BITSET_BITS`` nest can
147 only contain ``ETHTOOL_A_BITSET_BITS_BIT`` attributes but there can be an
148 arbitrary number of them. A bit may be identified by its index or by its
149 name. When used in requests, listed bits are set to 0 or 1 according to
150 ``ETHTOOL_A_BITSET_BIT_VALUE``, the rest is preserved. A request fails if
151 index exceeds kernel bit length or if name is not recognized.
153 When ``ETHTOOL_A_BITSET_NOMASK`` flag is present, bitset is interpreted as
154 a simple bitmap. ``ETHTOOL_A_BITSET_BIT_VALUE`` attributes are not used in
155 such case. Such bitset represents a bitmap with listed bits set and the rest
158 In requests, application can use either form. Form used by kernel in reply is
159 determined by ``ETHTOOL_FLAG_COMPACT_BITSETS`` flag in flags field of request
160 header. Semantics of value and mask depends on the attribute.
163 List of message types
164 =====================
166 All constants identifying message types use ``ETHTOOL_CMD_`` prefix and suffix
167 according to message purpose:
169 ============== ======================================
170 ``_GET`` userspace request to retrieve data
171 ``_SET`` userspace request to set data
172 ``_ACT`` userspace request to perform an action
173 ``_GET_REPLY`` kernel reply to a ``GET`` request
174 ``_SET_REPLY`` kernel reply to a ``SET`` request
175 ``_ACT_REPLY`` kernel reply to an ``ACT`` request
176 ``_NTF`` kernel notification
177 ============== ======================================
181 ===================================== ================================
182 ``ETHTOOL_MSG_STRSET_GET`` get string set
183 ``ETHTOOL_MSG_LINKINFO_GET`` get link settings
184 ``ETHTOOL_MSG_LINKINFO_SET`` set link settings
185 ``ETHTOOL_MSG_LINKMODES_GET`` get link modes info
186 ``ETHTOOL_MSG_LINKMODES_SET`` set link modes info
187 ``ETHTOOL_MSG_LINKSTATE_GET`` get link state
188 ``ETHTOOL_MSG_DEBUG_GET`` get debugging settings
189 ``ETHTOOL_MSG_DEBUG_SET`` set debugging settings
190 ``ETHTOOL_MSG_WOL_GET`` get wake-on-lan settings
191 ``ETHTOOL_MSG_WOL_SET`` set wake-on-lan settings
192 ``ETHTOOL_MSG_FEATURES_GET`` get device features
193 ``ETHTOOL_MSG_FEATURES_SET`` set device features
194 ``ETHTOOL_MSG_PRIVFLAGS_GET`` get private flags
195 ``ETHTOOL_MSG_PRIVFLAGS_SET`` set private flags
196 ``ETHTOOL_MSG_RINGS_GET`` get ring sizes
197 ``ETHTOOL_MSG_RINGS_SET`` set ring sizes
198 ``ETHTOOL_MSG_CHANNELS_GET`` get channel counts
199 ``ETHTOOL_MSG_CHANNELS_SET`` set channel counts
200 ``ETHTOOL_MSG_COALESCE_GET`` get coalescing parameters
201 ``ETHTOOL_MSG_COALESCE_SET`` set coalescing parameters
202 ``ETHTOOL_MSG_PAUSE_GET`` get pause parameters
203 ``ETHTOOL_MSG_PAUSE_SET`` set pause parameters
204 ``ETHTOOL_MSG_EEE_GET`` get EEE settings
205 ``ETHTOOL_MSG_EEE_SET`` set EEE settings
206 ``ETHTOOL_MSG_TSINFO_GET`` get timestamping info
207 ``ETHTOOL_MSG_CABLE_TEST_ACT`` action start cable test
208 ``ETHTOOL_MSG_CABLE_TEST_TDR_ACT`` action start raw TDR cable test
209 ``ETHTOOL_MSG_TUNNEL_INFO_GET`` get tunnel offload info
210 ===================================== ================================
214 ===================================== =================================
215 ``ETHTOOL_MSG_STRSET_GET_REPLY`` string set contents
216 ``ETHTOOL_MSG_LINKINFO_GET_REPLY`` link settings
217 ``ETHTOOL_MSG_LINKINFO_NTF`` link settings notification
218 ``ETHTOOL_MSG_LINKMODES_GET_REPLY`` link modes info
219 ``ETHTOOL_MSG_LINKMODES_NTF`` link modes notification
220 ``ETHTOOL_MSG_LINKSTATE_GET_REPLY`` link state info
221 ``ETHTOOL_MSG_DEBUG_GET_REPLY`` debugging settings
222 ``ETHTOOL_MSG_DEBUG_NTF`` debugging settings notification
223 ``ETHTOOL_MSG_WOL_GET_REPLY`` wake-on-lan settings
224 ``ETHTOOL_MSG_WOL_NTF`` wake-on-lan settings notification
225 ``ETHTOOL_MSG_FEATURES_GET_REPLY`` device features
226 ``ETHTOOL_MSG_FEATURES_SET_REPLY`` optional reply to FEATURES_SET
227 ``ETHTOOL_MSG_FEATURES_NTF`` netdev features notification
228 ``ETHTOOL_MSG_PRIVFLAGS_GET_REPLY`` private flags
229 ``ETHTOOL_MSG_PRIVFLAGS_NTF`` private flags
230 ``ETHTOOL_MSG_RINGS_GET_REPLY`` ring sizes
231 ``ETHTOOL_MSG_RINGS_NTF`` ring sizes
232 ``ETHTOOL_MSG_CHANNELS_GET_REPLY`` channel counts
233 ``ETHTOOL_MSG_CHANNELS_NTF`` channel counts
234 ``ETHTOOL_MSG_COALESCE_GET_REPLY`` coalescing parameters
235 ``ETHTOOL_MSG_COALESCE_NTF`` coalescing parameters
236 ``ETHTOOL_MSG_PAUSE_GET_REPLY`` pause parameters
237 ``ETHTOOL_MSG_PAUSE_NTF`` pause parameters
238 ``ETHTOOL_MSG_EEE_GET_REPLY`` EEE settings
239 ``ETHTOOL_MSG_EEE_NTF`` EEE settings
240 ``ETHTOOL_MSG_TSINFO_GET_REPLY`` timestamping info
241 ``ETHTOOL_MSG_CABLE_TEST_NTF`` Cable test results
242 ``ETHTOOL_MSG_CABLE_TEST_TDR_NTF`` Cable test TDR results
243 ``ETHTOOL_MSG_TUNNEL_INFO_GET_REPLY`` tunnel offload info
244 ===================================== =================================
246 ``GET`` requests are sent by userspace applications to retrieve device
247 information. They usually do not contain any message specific attributes.
248 Kernel replies with corresponding "GET_REPLY" message. For most types, ``GET``
249 request with ``NLM_F_DUMP`` and no device identification can be used to query
250 the information for all devices supporting the request.
252 If the data can be also modified, corresponding ``SET`` message with the same
253 layout as corresponding ``GET_REPLY`` is used to request changes. Only
254 attributes where a change is requested are included in such request (also, not
255 all attributes may be changed). Replies to most ``SET`` request consist only
256 of error code and extack; if kernel provides additional data, it is sent in
257 the form of corresponding ``SET_REPLY`` message which can be suppressed by
258 setting ``ETHTOOL_FLAG_OMIT_REPLY`` flag in request header.
260 Data modification also triggers sending a ``NTF`` message with a notification.
261 These usually bear only a subset of attributes which was affected by the
262 change. The same notification is issued if the data is modified using other
263 means (mostly ioctl ethtool interface). Unlike notifications from ethtool
264 netlink code which are only sent if something actually changed, notifications
265 triggered by ioctl interface may be sent even if the request did not actually
268 ``ACT`` messages request kernel (driver) to perform a specific action. If some
269 information is reported by kernel (which can be suppressed by setting
270 ``ETHTOOL_FLAG_OMIT_REPLY`` flag in request header), the reply takes form of
271 an ``ACT_REPLY`` message. Performing an action also triggers a notification
274 Later sections describe the format and semantics of these messages.
280 Requests contents of a string set as provided by ioctl commands
281 ``ETHTOOL_GSSET_INFO`` and ``ETHTOOL_GSTRINGS.`` String sets are not user
282 writeable so that the corresponding ``STRSET_SET`` message is only used in
283 kernel replies. There are two types of string sets: global (independent of
284 a device, e.g. device feature names) and device specific (e.g. device private
289 +---------------------------------------+--------+------------------------+
290 | ``ETHTOOL_A_STRSET_HEADER`` | nested | request header |
291 +---------------------------------------+--------+------------------------+
292 | ``ETHTOOL_A_STRSET_STRINGSETS`` | nested | string set to request |
293 +-+-------------------------------------+--------+------------------------+
294 | | ``ETHTOOL_A_STRINGSETS_STRINGSET+`` | nested | one string set |
295 +-+-+-----------------------------------+--------+------------------------+
296 | | | ``ETHTOOL_A_STRINGSET_ID`` | u32 | set id |
297 +-+-+-----------------------------------+--------+------------------------+
299 Kernel response contents:
301 +---------------------------------------+--------+-----------------------+
302 | ``ETHTOOL_A_STRSET_HEADER`` | nested | reply header |
303 +---------------------------------------+--------+-----------------------+
304 | ``ETHTOOL_A_STRSET_STRINGSETS`` | nested | array of string sets |
305 +-+-------------------------------------+--------+-----------------------+
306 | | ``ETHTOOL_A_STRINGSETS_STRINGSET+`` | nested | one string set |
307 +-+-+-----------------------------------+--------+-----------------------+
308 | | | ``ETHTOOL_A_STRINGSET_ID`` | u32 | set id |
309 +-+-+-----------------------------------+--------+-----------------------+
310 | | | ``ETHTOOL_A_STRINGSET_COUNT`` | u32 | number of strings |
311 +-+-+-----------------------------------+--------+-----------------------+
312 | | | ``ETHTOOL_A_STRINGSET_STRINGS`` | nested | array of strings |
313 +-+-+-+---------------------------------+--------+-----------------------+
314 | | | | ``ETHTOOL_A_STRINGS_STRING+`` | nested | one string |
315 +-+-+-+-+-------------------------------+--------+-----------------------+
316 | | | | | ``ETHTOOL_A_STRING_INDEX`` | u32 | string index |
317 +-+-+-+-+-------------------------------+--------+-----------------------+
318 | | | | | ``ETHTOOL_A_STRING_VALUE`` | string | string value |
319 +-+-+-+-+-------------------------------+--------+-----------------------+
320 | ``ETHTOOL_A_STRSET_COUNTS_ONLY`` | flag | return only counts |
321 +---------------------------------------+--------+-----------------------+
323 Device identification in request header is optional. Depending on its presence
324 a and ``NLM_F_DUMP`` flag, there are three type of ``STRSET_GET`` requests:
326 - no ``NLM_F_DUMP,`` no device: get "global" stringsets
327 - no ``NLM_F_DUMP``, with device: get string sets related to the device
328 - ``NLM_F_DUMP``, no device: get device related string sets for all devices
330 If there is no ``ETHTOOL_A_STRSET_STRINGSETS`` array, all string sets of
331 requested type are returned, otherwise only those specified in the request.
332 Flag ``ETHTOOL_A_STRSET_COUNTS_ONLY`` tells kernel to only return string
333 counts of the sets, not the actual strings.
339 Requests link settings as provided by ``ETHTOOL_GLINKSETTINGS`` except for
340 link modes and autonegotiation related information. The request does not use
345 ==================================== ====== ==========================
346 ``ETHTOOL_A_LINKINFO_HEADER`` nested request header
347 ==================================== ====== ==========================
349 Kernel response contents:
351 ==================================== ====== ==========================
352 ``ETHTOOL_A_LINKINFO_HEADER`` nested reply header
353 ``ETHTOOL_A_LINKINFO_PORT`` u8 physical port
354 ``ETHTOOL_A_LINKINFO_PHYADDR`` u8 phy MDIO address
355 ``ETHTOOL_A_LINKINFO_TP_MDIX`` u8 MDI(-X) status
356 ``ETHTOOL_A_LINKINFO_TP_MDIX_CTRL`` u8 MDI(-X) control
357 ``ETHTOOL_A_LINKINFO_TRANSCEIVER`` u8 transceiver
358 ==================================== ====== ==========================
360 Attributes and their values have the same meaning as matching members of the
361 corresponding ioctl structures.
363 ``LINKINFO_GET`` allows dump requests (kernel returns reply message for all
364 devices supporting the request).
370 ``LINKINFO_SET`` request allows setting some of the attributes reported by
375 ==================================== ====== ==========================
376 ``ETHTOOL_A_LINKINFO_HEADER`` nested request header
377 ``ETHTOOL_A_LINKINFO_PORT`` u8 physical port
378 ``ETHTOOL_A_LINKINFO_PHYADDR`` u8 phy MDIO address
379 ``ETHTOOL_A_LINKINFO_TP_MDIX_CTRL`` u8 MDI(-X) control
380 ==================================== ====== ==========================
382 MDI(-X) status and transceiver cannot be set, request with the corresponding
383 attributes is rejected.
389 Requests link modes (supported, advertised and peer advertised) and related
390 information (autonegotiation status, link speed and duplex) as provided by
391 ``ETHTOOL_GLINKSETTINGS``. The request does not use any attributes.
395 ==================================== ====== ==========================
396 ``ETHTOOL_A_LINKMODES_HEADER`` nested request header
397 ==================================== ====== ==========================
399 Kernel response contents:
401 ========================================== ====== ==========================
402 ``ETHTOOL_A_LINKMODES_HEADER`` nested reply header
403 ``ETHTOOL_A_LINKMODES_AUTONEG`` u8 autonegotiation status
404 ``ETHTOOL_A_LINKMODES_OURS`` bitset advertised link modes
405 ``ETHTOOL_A_LINKMODES_PEER`` bitset partner link modes
406 ``ETHTOOL_A_LINKMODES_SPEED`` u32 link speed (Mb/s)
407 ``ETHTOOL_A_LINKMODES_DUPLEX`` u8 duplex mode
408 ``ETHTOOL_A_LINKMODES_MASTER_SLAVE_CFG`` u8 Master/slave port mode
409 ``ETHTOOL_A_LINKMODES_MASTER_SLAVE_STATE`` u8 Master/slave port state
410 ========================================== ====== ==========================
412 For ``ETHTOOL_A_LINKMODES_OURS``, value represents advertised modes and mask
413 represents supported modes. ``ETHTOOL_A_LINKMODES_PEER`` in the reply is a bit
416 ``LINKMODES_GET`` allows dump requests (kernel returns reply messages for all
417 devices supporting the request).
425 ========================================== ====== ==========================
426 ``ETHTOOL_A_LINKMODES_HEADER`` nested request header
427 ``ETHTOOL_A_LINKMODES_AUTONEG`` u8 autonegotiation status
428 ``ETHTOOL_A_LINKMODES_OURS`` bitset advertised link modes
429 ``ETHTOOL_A_LINKMODES_PEER`` bitset partner link modes
430 ``ETHTOOL_A_LINKMODES_SPEED`` u32 link speed (Mb/s)
431 ``ETHTOOL_A_LINKMODES_DUPLEX`` u8 duplex mode
432 ``ETHTOOL_A_LINKMODES_MASTER_SLAVE_CFG`` u8 Master/slave port mode
433 ========================================== ====== ==========================
435 ``ETHTOOL_A_LINKMODES_OURS`` bit set allows setting advertised link modes. If
436 autonegotiation is on (either set now or kept from before), advertised modes
437 are not changed (no ``ETHTOOL_A_LINKMODES_OURS`` attribute) and at least one
438 of speed and duplex is specified, kernel adjusts advertised modes to all
439 supported modes matching speed, duplex or both (whatever is specified). This
440 autoselection is done on ethtool side with ioctl interface, netlink interface
441 is supposed to allow requesting changes without knowing what exactly kernel
448 Requests link state information. Link up/down flag (as provided by
449 ``ETHTOOL_GLINK`` ioctl command) is provided. Optionally, extended state might
450 be provided as well. In general, extended state describes reasons for why a port
451 is down, or why it operates in some non-obvious mode. This request does not have
456 ==================================== ====== ==========================
457 ``ETHTOOL_A_LINKSTATE_HEADER`` nested request header
458 ==================================== ====== ==========================
460 Kernel response contents:
462 ==================================== ====== ============================
463 ``ETHTOOL_A_LINKSTATE_HEADER`` nested reply header
464 ``ETHTOOL_A_LINKSTATE_LINK`` bool link state (up/down)
465 ``ETHTOOL_A_LINKSTATE_SQI`` u32 Current Signal Quality Index
466 ``ETHTOOL_A_LINKSTATE_SQI_MAX`` u32 Max support SQI value
467 ``ETHTOOL_A_LINKSTATE_EXT_STATE`` u8 link extended state
468 ``ETHTOOL_A_LINKSTATE_EXT_SUBSTATE`` u8 link extended substate
469 ==================================== ====== ============================
471 For most NIC drivers, the value of ``ETHTOOL_A_LINKSTATE_LINK`` returns
472 carrier flag provided by ``netif_carrier_ok()`` but there are drivers which
473 define their own handler.
475 ``ETHTOOL_A_LINKSTATE_EXT_STATE`` and ``ETHTOOL_A_LINKSTATE_EXT_SUBSTATE`` are
476 optional values. ethtool core can provide either both
477 ``ETHTOOL_A_LINKSTATE_EXT_STATE`` and ``ETHTOOL_A_LINKSTATE_EXT_SUBSTATE``,
478 or only ``ETHTOOL_A_LINKSTATE_EXT_STATE``, or none of them.
480 ``LINKSTATE_GET`` allows dump requests (kernel returns reply messages for all
481 devices supporting the request).
484 Link extended states:
486 ================================================ ============================================
487 ``ETHTOOL_LINK_EXT_STATE_AUTONEG`` States relating to the autonegotiation or
490 ``ETHTOOL_LINK_EXT_STATE_LINK_TRAINING_FAILURE`` Failure during link training
492 ``ETHTOOL_LINK_EXT_STATE_LINK_LOGICAL_MISMATCH`` Logical mismatch in physical coding sublayer
493 or forward error correction sublayer
495 ``ETHTOOL_LINK_EXT_STATE_BAD_SIGNAL_INTEGRITY`` Signal integrity issues
497 ``ETHTOOL_LINK_EXT_STATE_NO_CABLE`` No cable connected
499 ``ETHTOOL_LINK_EXT_STATE_CABLE_ISSUE`` Failure is related to cable,
500 e.g., unsupported cable
502 ``ETHTOOL_LINK_EXT_STATE_EEPROM_ISSUE`` Failure is related to EEPROM, e.g., failure
503 during reading or parsing the data
505 ``ETHTOOL_LINK_EXT_STATE_CALIBRATION_FAILURE`` Failure during calibration algorithm
507 ``ETHTOOL_LINK_EXT_STATE_POWER_BUDGET_EXCEEDED`` The hardware is not able to provide the
508 power required from cable or module
510 ``ETHTOOL_LINK_EXT_STATE_OVERHEAT`` The module is overheated
511 ================================================ ============================================
513 Link extended substates:
517 =============================================================== ================================
518 ``ETHTOOL_LINK_EXT_SUBSTATE_AN_NO_PARTNER_DETECTED`` Peer side is down
520 ``ETHTOOL_LINK_EXT_SUBSTATE_AN_ACK_NOT_RECEIVED`` Ack not received from peer side
522 ``ETHTOOL_LINK_EXT_SUBSTATE_AN_NEXT_PAGE_EXCHANGE_FAILED`` Next page exchange failed
524 ``ETHTOOL_LINK_EXT_SUBSTATE_AN_NO_PARTNER_DETECTED_FORCE_MODE`` Peer side is down during force
525 mode or there is no agreement of
528 ``ETHTOOL_LINK_EXT_SUBSTATE_AN_FEC_MISMATCH_DURING_OVERRIDE`` Forward error correction modes
529 in both sides are mismatched
531 ``ETHTOOL_LINK_EXT_SUBSTATE_AN_NO_HCD`` No Highest Common Denominator
532 =============================================================== ================================
534 Link training substates:
536 =========================================================================== ====================
537 ``ETHTOOL_LINK_EXT_SUBSTATE_LT_KR_FRAME_LOCK_NOT_ACQUIRED`` Frames were not
541 ``ETHTOOL_LINK_EXT_SUBSTATE_LT_KR_LINK_INHIBIT_TIMEOUT`` The lock did not
545 ``ETHTOOL_LINK_EXT_SUBSTATE_LT_KR_LINK_PARTNER_DID_NOT_SET_RECEIVER_READY`` Peer side did not
550 ``ETHTOOL_LINK_EXT_SUBSTATE_LT_REMOTE_FAULT`` Remote side is not
552 =========================================================================== ====================
554 Link logical mismatch substates:
556 ================================================================ ===============================
557 ``ETHTOOL_LINK_EXT_SUBSTATE_LLM_PCS_DID_NOT_ACQUIRE_BLOCK_LOCK`` Physical coding sublayer was
558 not locked in first phase -
561 ``ETHTOOL_LINK_EXT_SUBSTATE_LLM_PCS_DID_NOT_ACQUIRE_AM_LOCK`` Physical coding sublayer was
562 not locked in second phase -
563 alignment markers lock
565 ``ETHTOOL_LINK_EXT_SUBSTATE_LLM_PCS_DID_NOT_GET_ALIGN_STATUS`` Physical coding sublayer did
568 ``ETHTOOL_LINK_EXT_SUBSTATE_LLM_FC_FEC_IS_NOT_LOCKED`` FC forward error correction is
571 ``ETHTOOL_LINK_EXT_SUBSTATE_LLM_RS_FEC_IS_NOT_LOCKED`` RS forward error correction is
573 ================================================================ ===============================
575 Bad signal integrity substates:
577 ================================================================= =============================
578 ``ETHTOOL_LINK_EXT_SUBSTATE_BSI_LARGE_NUMBER_OF_PHYSICAL_ERRORS`` Large number of physical
581 ``ETHTOOL_LINK_EXT_SUBSTATE_BSI_UNSUPPORTED_RATE`` The system attempted to
582 operate the cable at a rate
584 supported, which led to
585 signal integrity issues
586 ================================================================= =============================
588 Cable issue substates:
590 =================================================== ============================================
591 ``ETHTOOL_LINK_EXT_SUBSTATE_CI_UNSUPPORTED_CABLE`` Unsupported cable
593 ``ETHTOOL_LINK_EXT_SUBSTATE_CI_CABLE_TEST_FAILURE`` Cable test failure
594 =================================================== ============================================
599 Requests debugging settings of a device. At the moment, only message mask is
604 ==================================== ====== ==========================
605 ``ETHTOOL_A_DEBUG_HEADER`` nested request header
606 ==================================== ====== ==========================
608 Kernel response contents:
610 ==================================== ====== ==========================
611 ``ETHTOOL_A_DEBUG_HEADER`` nested reply header
612 ``ETHTOOL_A_DEBUG_MSGMASK`` bitset message mask
613 ==================================== ====== ==========================
615 The message mask (``ETHTOOL_A_DEBUG_MSGMASK``) is equal to message level as
616 provided by ``ETHTOOL_GMSGLVL`` and set by ``ETHTOOL_SMSGLVL`` in ioctl
617 interface. While it is called message level there for historical reasons, most
618 drivers and almost all newer drivers use it as a mask of enabled message
619 classes (represented by ``NETIF_MSG_*`` constants); therefore netlink
620 interface follows its actual use in practice.
622 ``DEBUG_GET`` allows dump requests (kernel returns reply messages for all
623 devices supporting the request).
629 Set or update debugging settings of a device. At the moment, only message mask
634 ==================================== ====== ==========================
635 ``ETHTOOL_A_DEBUG_HEADER`` nested request header
636 ``ETHTOOL_A_DEBUG_MSGMASK`` bitset message mask
637 ==================================== ====== ==========================
639 ``ETHTOOL_A_DEBUG_MSGMASK`` bit set allows setting or modifying mask of
640 enabled debugging message types for the device.
646 Query device wake-on-lan settings. Unlike most "GET" type requests,
647 ``ETHTOOL_MSG_WOL_GET`` requires (netns) ``CAP_NET_ADMIN`` privileges as it
648 (potentially) provides SecureOn(tm) password which is confidential.
652 ==================================== ====== ==========================
653 ``ETHTOOL_A_WOL_HEADER`` nested request header
654 ==================================== ====== ==========================
656 Kernel response contents:
658 ==================================== ====== ==========================
659 ``ETHTOOL_A_WOL_HEADER`` nested reply header
660 ``ETHTOOL_A_WOL_MODES`` bitset mask of enabled WoL modes
661 ``ETHTOOL_A_WOL_SOPASS`` binary SecureOn(tm) password
662 ==================================== ====== ==========================
664 In reply, ``ETHTOOL_A_WOL_MODES`` mask consists of modes supported by the
665 device, value of modes which are enabled. ``ETHTOOL_A_WOL_SOPASS`` is only
666 included in reply if ``WAKE_MAGICSECURE`` mode is supported.
672 Set or update wake-on-lan settings.
676 ==================================== ====== ==========================
677 ``ETHTOOL_A_WOL_HEADER`` nested request header
678 ``ETHTOOL_A_WOL_MODES`` bitset enabled WoL modes
679 ``ETHTOOL_A_WOL_SOPASS`` binary SecureOn(tm) password
680 ==================================== ====== ==========================
682 ``ETHTOOL_A_WOL_SOPASS`` is only allowed for devices supporting
683 ``WAKE_MAGICSECURE`` mode.
689 Gets netdev features like ``ETHTOOL_GFEATURES`` ioctl request.
693 ==================================== ====== ==========================
694 ``ETHTOOL_A_FEATURES_HEADER`` nested request header
695 ==================================== ====== ==========================
697 Kernel response contents:
699 ==================================== ====== ==========================
700 ``ETHTOOL_A_FEATURES_HEADER`` nested reply header
701 ``ETHTOOL_A_FEATURES_HW`` bitset dev->hw_features
702 ``ETHTOOL_A_FEATURES_WANTED`` bitset dev->wanted_features
703 ``ETHTOOL_A_FEATURES_ACTIVE`` bitset dev->features
704 ``ETHTOOL_A_FEATURES_NOCHANGE`` bitset NETIF_F_NEVER_CHANGE
705 ==================================== ====== ==========================
707 Bitmaps in kernel response have the same meaning as bitmaps used in ioctl
708 interference but attribute names are different (they are based on
709 corresponding members of struct net_device). Legacy "flags" are not provided,
710 if userspace needs them (most likely only ethtool for backward compatibility),
711 it can calculate their values from related feature bits itself.
712 ETHA_FEATURES_HW uses mask consisting of all features recognized by kernel (to
713 provide all names when using verbose bitmap format), the other three use no
714 mask (simple bit lists).
720 Request to set netdev features like ``ETHTOOL_SFEATURES`` ioctl request.
724 ==================================== ====== ==========================
725 ``ETHTOOL_A_FEATURES_HEADER`` nested request header
726 ``ETHTOOL_A_FEATURES_WANTED`` bitset requested features
727 ==================================== ====== ==========================
729 Kernel response contents:
731 ==================================== ====== ==========================
732 ``ETHTOOL_A_FEATURES_HEADER`` nested reply header
733 ``ETHTOOL_A_FEATURES_WANTED`` bitset diff wanted vs. result
734 ``ETHTOOL_A_FEATURES_ACTIVE`` bitset diff old vs. new active
735 ==================================== ====== ==========================
737 Request constains only one bitset which can be either value/mask pair (request
738 to change specific feature bits and leave the rest) or only a value (request
739 to set all features to specified set).
741 As request is subject to netdev_change_features() sanity checks, optional
742 kernel reply (can be suppressed by ``ETHTOOL_FLAG_OMIT_REPLY`` flag in request
743 header) informs client about the actual result. ``ETHTOOL_A_FEATURES_WANTED``
744 reports the difference between client request and actual result: mask consists
745 of bits which differ between requested features and result (dev->features
746 after the operation), value consists of values of these bits in the request
747 (i.e. negated values from resulting features). ``ETHTOOL_A_FEATURES_ACTIVE``
748 reports the difference between old and new dev->features: mask consists of
749 bits which have changed, values are their values in new dev->features (after
752 ``ETHTOOL_MSG_FEATURES_NTF`` notification is sent not only if device features
753 are modified using ``ETHTOOL_MSG_FEATURES_SET`` request or on of ethtool ioctl
754 request but also each time features are modified with netdev_update_features()
755 or netdev_change_features().
761 Gets private flags like ``ETHTOOL_GPFLAGS`` ioctl request.
765 ==================================== ====== ==========================
766 ``ETHTOOL_A_PRIVFLAGS_HEADER`` nested request header
767 ==================================== ====== ==========================
769 Kernel response contents:
771 ==================================== ====== ==========================
772 ``ETHTOOL_A_PRIVFLAGS_HEADER`` nested reply header
773 ``ETHTOOL_A_PRIVFLAGS_FLAGS`` bitset private flags
774 ==================================== ====== ==========================
776 ``ETHTOOL_A_PRIVFLAGS_FLAGS`` is a bitset with values of device private flags.
777 These flags are defined by driver, their number and names (and also meaning)
778 are device dependent. For compact bitset format, names can be retrieved as
779 ``ETH_SS_PRIV_FLAGS`` string set. If verbose bitset format is requested,
780 response uses all private flags supported by the device as mask so that client
781 gets the full information without having to fetch the string set with names.
787 Sets or modifies values of device private flags like ``ETHTOOL_SPFLAGS``
792 ==================================== ====== ==========================
793 ``ETHTOOL_A_PRIVFLAGS_HEADER`` nested request header
794 ``ETHTOOL_A_PRIVFLAGS_FLAGS`` bitset private flags
795 ==================================== ====== ==========================
797 ``ETHTOOL_A_PRIVFLAGS_FLAGS`` can either set the whole set of private flags or
798 modify only values of some of them.
804 Gets ring sizes like ``ETHTOOL_GRINGPARAM`` ioctl request.
808 ==================================== ====== ==========================
809 ``ETHTOOL_A_RINGS_HEADER`` nested request header
810 ==================================== ====== ==========================
812 Kernel response contents:
814 ==================================== ====== ==========================
815 ``ETHTOOL_A_RINGS_HEADER`` nested reply header
816 ``ETHTOOL_A_RINGS_RX_MAX`` u32 max size of RX ring
817 ``ETHTOOL_A_RINGS_RX_MINI_MAX`` u32 max size of RX mini ring
818 ``ETHTOOL_A_RINGS_RX_JUMBO_MAX`` u32 max size of RX jumbo ring
819 ``ETHTOOL_A_RINGS_TX_MAX`` u32 max size of TX ring
820 ``ETHTOOL_A_RINGS_RX`` u32 size of RX ring
821 ``ETHTOOL_A_RINGS_RX_MINI`` u32 size of RX mini ring
822 ``ETHTOOL_A_RINGS_RX_JUMBO`` u32 size of RX jumbo ring
823 ``ETHTOOL_A_RINGS_TX`` u32 size of TX ring
824 ==================================== ====== ==========================
830 Sets ring sizes like ``ETHTOOL_SRINGPARAM`` ioctl request.
834 ==================================== ====== ==========================
835 ``ETHTOOL_A_RINGS_HEADER`` nested reply header
836 ``ETHTOOL_A_RINGS_RX`` u32 size of RX ring
837 ``ETHTOOL_A_RINGS_RX_MINI`` u32 size of RX mini ring
838 ``ETHTOOL_A_RINGS_RX_JUMBO`` u32 size of RX jumbo ring
839 ``ETHTOOL_A_RINGS_TX`` u32 size of TX ring
840 ==================================== ====== ==========================
842 Kernel checks that requested ring sizes do not exceed limits reported by
843 driver. Driver may impose additional constraints and may not suspport all
850 Gets channel counts like ``ETHTOOL_GCHANNELS`` ioctl request.
854 ==================================== ====== ==========================
855 ``ETHTOOL_A_CHANNELS_HEADER`` nested request header
856 ==================================== ====== ==========================
858 Kernel response contents:
860 ===================================== ====== ==========================
861 ``ETHTOOL_A_CHANNELS_HEADER`` nested reply header
862 ``ETHTOOL_A_CHANNELS_RX_MAX`` u32 max receive channels
863 ``ETHTOOL_A_CHANNELS_TX_MAX`` u32 max transmit channels
864 ``ETHTOOL_A_CHANNELS_OTHER_MAX`` u32 max other channels
865 ``ETHTOOL_A_CHANNELS_COMBINED_MAX`` u32 max combined channels
866 ``ETHTOOL_A_CHANNELS_RX_COUNT`` u32 receive channel count
867 ``ETHTOOL_A_CHANNELS_TX_COUNT`` u32 transmit channel count
868 ``ETHTOOL_A_CHANNELS_OTHER_COUNT`` u32 other channel count
869 ``ETHTOOL_A_CHANNELS_COMBINED_COUNT`` u32 combined channel count
870 ===================================== ====== ==========================
876 Sets channel counts like ``ETHTOOL_SCHANNELS`` ioctl request.
880 ===================================== ====== ==========================
881 ``ETHTOOL_A_CHANNELS_HEADER`` nested request header
882 ``ETHTOOL_A_CHANNELS_RX_COUNT`` u32 receive channel count
883 ``ETHTOOL_A_CHANNELS_TX_COUNT`` u32 transmit channel count
884 ``ETHTOOL_A_CHANNELS_OTHER_COUNT`` u32 other channel count
885 ``ETHTOOL_A_CHANNELS_COMBINED_COUNT`` u32 combined channel count
886 ===================================== ====== ==========================
888 Kernel checks that requested channel counts do not exceed limits reported by
889 driver. Driver may impose additional constraints and may not suspport all
896 Gets coalescing parameters like ``ETHTOOL_GCOALESCE`` ioctl request.
900 ==================================== ====== ==========================
901 ``ETHTOOL_A_COALESCE_HEADER`` nested request header
902 ==================================== ====== ==========================
904 Kernel response contents:
906 =========================================== ====== =======================
907 ``ETHTOOL_A_COALESCE_HEADER`` nested reply header
908 ``ETHTOOL_A_COALESCE_RX_USECS`` u32 delay (us), normal Rx
909 ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES`` u32 max packets, normal Rx
910 ``ETHTOOL_A_COALESCE_RX_USECS_IRQ`` u32 delay (us), Rx in IRQ
911 ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES_IRQ`` u32 max packets, Rx in IRQ
912 ``ETHTOOL_A_COALESCE_TX_USECS`` u32 delay (us), normal Tx
913 ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES`` u32 max packets, normal Tx
914 ``ETHTOOL_A_COALESCE_TX_USECS_IRQ`` u32 delay (us), Tx in IRQ
915 ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES_IRQ`` u32 IRQ packets, Tx in IRQ
916 ``ETHTOOL_A_COALESCE_STATS_BLOCK_USECS`` u32 delay of stats update
917 ``ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX`` bool adaptive Rx coalesce
918 ``ETHTOOL_A_COALESCE_USE_ADAPTIVE_TX`` bool adaptive Tx coalesce
919 ``ETHTOOL_A_COALESCE_PKT_RATE_LOW`` u32 threshold for low rate
920 ``ETHTOOL_A_COALESCE_RX_USECS_LOW`` u32 delay (us), low Rx
921 ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES_LOW`` u32 max packets, low Rx
922 ``ETHTOOL_A_COALESCE_TX_USECS_LOW`` u32 delay (us), low Tx
923 ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES_LOW`` u32 max packets, low Tx
924 ``ETHTOOL_A_COALESCE_PKT_RATE_HIGH`` u32 threshold for high rate
925 ``ETHTOOL_A_COALESCE_RX_USECS_HIGH`` u32 delay (us), high Rx
926 ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES_HIGH`` u32 max packets, high Rx
927 ``ETHTOOL_A_COALESCE_TX_USECS_HIGH`` u32 delay (us), high Tx
928 ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH`` u32 max packets, high Tx
929 ``ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL`` u32 rate sampling interval
930 =========================================== ====== =======================
932 Attributes are only included in reply if their value is not zero or the
933 corresponding bit in ``ethtool_ops::supported_coalesce_params`` is set (i.e.
934 they are declared as supported by driver).
940 Sets coalescing parameters like ``ETHTOOL_SCOALESCE`` ioctl request.
944 =========================================== ====== =======================
945 ``ETHTOOL_A_COALESCE_HEADER`` nested request header
946 ``ETHTOOL_A_COALESCE_RX_USECS`` u32 delay (us), normal Rx
947 ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES`` u32 max packets, normal Rx
948 ``ETHTOOL_A_COALESCE_RX_USECS_IRQ`` u32 delay (us), Rx in IRQ
949 ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES_IRQ`` u32 max packets, Rx in IRQ
950 ``ETHTOOL_A_COALESCE_TX_USECS`` u32 delay (us), normal Tx
951 ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES`` u32 max packets, normal Tx
952 ``ETHTOOL_A_COALESCE_TX_USECS_IRQ`` u32 delay (us), Tx in IRQ
953 ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES_IRQ`` u32 IRQ packets, Tx in IRQ
954 ``ETHTOOL_A_COALESCE_STATS_BLOCK_USECS`` u32 delay of stats update
955 ``ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX`` bool adaptive Rx coalesce
956 ``ETHTOOL_A_COALESCE_USE_ADAPTIVE_TX`` bool adaptive Tx coalesce
957 ``ETHTOOL_A_COALESCE_PKT_RATE_LOW`` u32 threshold for low rate
958 ``ETHTOOL_A_COALESCE_RX_USECS_LOW`` u32 delay (us), low Rx
959 ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES_LOW`` u32 max packets, low Rx
960 ``ETHTOOL_A_COALESCE_TX_USECS_LOW`` u32 delay (us), low Tx
961 ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES_LOW`` u32 max packets, low Tx
962 ``ETHTOOL_A_COALESCE_PKT_RATE_HIGH`` u32 threshold for high rate
963 ``ETHTOOL_A_COALESCE_RX_USECS_HIGH`` u32 delay (us), high Rx
964 ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES_HIGH`` u32 max packets, high Rx
965 ``ETHTOOL_A_COALESCE_TX_USECS_HIGH`` u32 delay (us), high Tx
966 ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH`` u32 max packets, high Tx
967 ``ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL`` u32 rate sampling interval
968 =========================================== ====== =======================
970 Request is rejected if it attributes declared as unsupported by driver (i.e.
971 such that the corresponding bit in ``ethtool_ops::supported_coalesce_params``
972 is not set), regardless of their values. Driver may impose additional
973 constraints on coalescing parameters and their values.
979 Gets channel counts like ``ETHTOOL_GPAUSE`` ioctl request.
983 ===================================== ====== ==========================
984 ``ETHTOOL_A_PAUSE_HEADER`` nested request header
985 ===================================== ====== ==========================
987 Kernel response contents:
989 ===================================== ====== ==========================
990 ``ETHTOOL_A_PAUSE_HEADER`` nested request header
991 ``ETHTOOL_A_PAUSE_AUTONEG`` bool pause autonegotiation
992 ``ETHTOOL_A_PAUSE_RX`` bool receive pause frames
993 ``ETHTOOL_A_PAUSE_TX`` bool transmit pause frames
994 ===================================== ====== ==========================
1000 Sets pause parameters like ``ETHTOOL_GPAUSEPARAM`` ioctl request.
1004 ===================================== ====== ==========================
1005 ``ETHTOOL_A_PAUSE_HEADER`` nested request header
1006 ``ETHTOOL_A_PAUSE_AUTONEG`` bool pause autonegotiation
1007 ``ETHTOOL_A_PAUSE_RX`` bool receive pause frames
1008 ``ETHTOOL_A_PAUSE_TX`` bool transmit pause frames
1009 ===================================== ====== ==========================
1015 Gets channel counts like ``ETHTOOL_GEEE`` ioctl request.
1019 ===================================== ====== ==========================
1020 ``ETHTOOL_A_EEE_HEADER`` nested request header
1021 ===================================== ====== ==========================
1023 Kernel response contents:
1025 ===================================== ====== ==========================
1026 ``ETHTOOL_A_EEE_HEADER`` nested request header
1027 ``ETHTOOL_A_EEE_MODES_OURS`` bool supported/advertised modes
1028 ``ETHTOOL_A_EEE_MODES_PEER`` bool peer advertised link modes
1029 ``ETHTOOL_A_EEE_ACTIVE`` bool EEE is actively used
1030 ``ETHTOOL_A_EEE_ENABLED`` bool EEE is enabled
1031 ``ETHTOOL_A_EEE_TX_LPI_ENABLED`` bool Tx lpi enabled
1032 ``ETHTOOL_A_EEE_TX_LPI_TIMER`` u32 Tx lpi timeout (in us)
1033 ===================================== ====== ==========================
1035 In ``ETHTOOL_A_EEE_MODES_OURS``, mask consists of link modes for which EEE is
1036 enabled, value of link modes for which EEE is advertised. Link modes for which
1037 peer advertises EEE are listed in ``ETHTOOL_A_EEE_MODES_PEER`` (no mask). The
1038 netlink interface allows reporting EEE status for all link modes but only
1039 first 32 are provided by the ``ethtool_ops`` callback.
1045 Sets pause parameters like ``ETHTOOL_GEEEPARAM`` ioctl request.
1049 ===================================== ====== ==========================
1050 ``ETHTOOL_A_EEE_HEADER`` nested request header
1051 ``ETHTOOL_A_EEE_MODES_OURS`` bool advertised modes
1052 ``ETHTOOL_A_EEE_ENABLED`` bool EEE is enabled
1053 ``ETHTOOL_A_EEE_TX_LPI_ENABLED`` bool Tx lpi enabled
1054 ``ETHTOOL_A_EEE_TX_LPI_TIMER`` u32 Tx lpi timeout (in us)
1055 ===================================== ====== ==========================
1057 ``ETHTOOL_A_EEE_MODES_OURS`` is used to either list link modes to advertise
1058 EEE for (if there is no mask) or specify changes to the list (if there is
1059 a mask). The netlink interface allows reporting EEE status for all link modes
1060 but only first 32 can be set at the moment as that is what the ``ethtool_ops``
1067 Gets timestamping information like ``ETHTOOL_GET_TS_INFO`` ioctl request.
1071 ===================================== ====== ==========================
1072 ``ETHTOOL_A_TSINFO_HEADER`` nested request header
1073 ===================================== ====== ==========================
1075 Kernel response contents:
1077 ===================================== ====== ==========================
1078 ``ETHTOOL_A_TSINFO_HEADER`` nested request header
1079 ``ETHTOOL_A_TSINFO_TIMESTAMPING`` bitset SO_TIMESTAMPING flags
1080 ``ETHTOOL_A_TSINFO_TX_TYPES`` bitset supported Tx types
1081 ``ETHTOOL_A_TSINFO_RX_FILTERS`` bitset supported Rx filters
1082 ``ETHTOOL_A_TSINFO_PHC_INDEX`` u32 PTP hw clock index
1083 ===================================== ====== ==========================
1085 ``ETHTOOL_A_TSINFO_PHC_INDEX`` is absent if there is no associated PHC (there
1086 is no special value for this case). The bitset attributes are omitted if they
1087 would be empty (no bit set).
1096 ==================================== ====== ==========================
1097 ``ETHTOOL_A_CABLE_TEST_HEADER`` nested request header
1098 ==================================== ====== ==========================
1100 Notification contents:
1102 An Ethernet cable typically contains 1, 2 or 4 pairs. The length of
1103 the pair can only be measured when there is a fault in the pair and
1104 hence a reflection. Information about the fault may not be available,
1105 depending on the specific hardware. Hence the contents of the notify
1106 message are mostly optional. The attributes can be repeated an
1107 arbitrary number of times, in an arbitrary order, for an arbitrary
1110 The example shows the notification sent when the test is completed for
1111 a T2 cable, i.e. two pairs. One pair is OK and hence has no length
1112 information. The second pair has a fault and does have length
1115 +---------------------------------------------+--------+---------------------+
1116 | ``ETHTOOL_A_CABLE_TEST_HEADER`` | nested | reply header |
1117 +---------------------------------------------+--------+---------------------+
1118 | ``ETHTOOL_A_CABLE_TEST_STATUS`` | u8 | completed |
1119 +---------------------------------------------+--------+---------------------+
1120 | ``ETHTOOL_A_CABLE_TEST_NTF_NEST`` | nested | all the results |
1121 +-+-------------------------------------------+--------+---------------------+
1122 | | ``ETHTOOL_A_CABLE_NEST_RESULT`` | nested | cable test result |
1123 +-+-+-----------------------------------------+--------+---------------------+
1124 | | | ``ETHTOOL_A_CABLE_RESULTS_PAIR`` | u8 | pair number |
1125 +-+-+-----------------------------------------+--------+---------------------+
1126 | | | ``ETHTOOL_A_CABLE_RESULTS_CODE`` | u8 | result code |
1127 +-+-+-----------------------------------------+--------+---------------------+
1128 | | ``ETHTOOL_A_CABLE_NEST_RESULT`` | nested | cable test results |
1129 +-+-+-----------------------------------------+--------+---------------------+
1130 | | | ``ETHTOOL_A_CABLE_RESULTS_PAIR`` | u8 | pair number |
1131 +-+-+-----------------------------------------+--------+---------------------+
1132 | | | ``ETHTOOL_A_CABLE_RESULTS_CODE`` | u8 | result code |
1133 +-+-+-----------------------------------------+--------+---------------------+
1134 | | ``ETHTOOL_A_CABLE_NEST_FAULT_LENGTH`` | nested | cable length |
1135 +-+-+-----------------------------------------+--------+---------------------+
1136 | | | ``ETHTOOL_A_CABLE_FAULT_LENGTH_PAIR`` | u8 | pair number |
1137 +-+-+-----------------------------------------+--------+---------------------+
1138 | | | ``ETHTOOL_A_CABLE_FAULT_LENGTH_CM`` | u32 | length in cm |
1139 +-+-+-----------------------------------------+--------+---------------------+
1144 Start a cable test and report raw TDR data
1148 +--------------------------------------------+--------+-----------------------+
1149 | ``ETHTOOL_A_CABLE_TEST_TDR_HEADER`` | nested | reply header |
1150 +--------------------------------------------+--------+-----------------------+
1151 | ``ETHTOOL_A_CABLE_TEST_TDR_CFG`` | nested | test configuration |
1152 +-+------------------------------------------+--------+-----------------------+
1153 | | ``ETHTOOL_A_CABLE_STEP_FIRST_DISTANCE`` | u32 | first data distance |
1154 +-+-+----------------------------------------+--------+-----------------------+
1155 | | ``ETHTOOL_A_CABLE_STEP_LAST_DISTANCE`` | u32 | last data distance |
1156 +-+-+----------------------------------------+--------+-----------------------+
1157 | | ``ETHTOOL_A_CABLE_STEP_STEP_DISTANCE`` | u32 | distance of each step |
1158 +-+-+----------------------------------------+--------+-----------------------+
1159 | | ``ETHTOOL_A_CABLE_TEST_TDR_CFG_PAIR`` | u8 | pair to test |
1160 +-+-+----------------------------------------+--------+-----------------------+
1162 The ETHTOOL_A_CABLE_TEST_TDR_CFG is optional, as well as all members
1163 of the nest. All distances are expressed in centimeters. The PHY takes
1164 the distances as a guide, and rounds to the nearest distance it
1165 actually supports. If a pair is passed, only that one pair will be
1166 tested. Otherwise all pairs are tested.
1168 Notification contents:
1170 Raw TDR data is gathered by sending a pulse down the cable and
1171 recording the amplitude of the reflected pulse for a given distance.
1173 It can take a number of seconds to collect TDR data, especial if the
1174 full 100 meters is probed at 1 meter intervals. When the test is
1175 started a notification will be sent containing just
1176 ETHTOOL_A_CABLE_TEST_TDR_STATUS with the value
1177 ETHTOOL_A_CABLE_TEST_NTF_STATUS_STARTED.
1179 When the test has completed a second notification will be sent
1180 containing ETHTOOL_A_CABLE_TEST_TDR_STATUS with the value
1181 ETHTOOL_A_CABLE_TEST_NTF_STATUS_COMPLETED and the TDR data.
1183 The message may optionally contain the amplitude of the pulse send
1184 down the cable. This is measured in mV. A reflection should not be
1185 bigger than transmitted pulse.
1187 Before the raw TDR data should be an ETHTOOL_A_CABLE_TDR_NEST_STEP
1188 nest containing information about the distance along the cable for the
1189 first reading, the last reading, and the step between each
1190 reading. Distances are measured in centimeters. These should be the
1191 exact values the PHY used. These may be different to what the user
1192 requested, if the native measurement resolution is greater than 1 cm.
1194 For each step along the cable, a ETHTOOL_A_CABLE_TDR_NEST_AMPLITUDE is
1195 used to report the amplitude of the reflection for a given pair.
1197 +---------------------------------------------+--------+----------------------+
1198 | ``ETHTOOL_A_CABLE_TEST_TDR_HEADER`` | nested | reply header |
1199 +---------------------------------------------+--------+----------------------+
1200 | ``ETHTOOL_A_CABLE_TEST_TDR_STATUS`` | u8 | completed |
1201 +---------------------------------------------+--------+----------------------+
1202 | ``ETHTOOL_A_CABLE_TEST_TDR_NTF_NEST`` | nested | all the results |
1203 +-+-------------------------------------------+--------+----------------------+
1204 | | ``ETHTOOL_A_CABLE_TDR_NEST_PULSE`` | nested | TX Pulse amplitude |
1205 +-+-+-----------------------------------------+--------+----------------------+
1206 | | | ``ETHTOOL_A_CABLE_PULSE_mV`` | s16 | Pulse amplitude |
1207 +-+-+-----------------------------------------+--------+----------------------+
1208 | | ``ETHTOOL_A_CABLE_NEST_STEP`` | nested | TDR step info |
1209 +-+-+-----------------------------------------+--------+----------------------+
1210 | | | ``ETHTOOL_A_CABLE_STEP_FIRST_DISTANCE`` | u32 | First data distance |
1211 +-+-+-----------------------------------------+--------+----------------------+
1212 | | | ``ETHTOOL_A_CABLE_STEP_LAST_DISTANCE`` | u32 | Last data distance |
1213 +-+-+-----------------------------------------+--------+----------------------+
1214 | | | ``ETHTOOL_A_CABLE_STEP_STEP_DISTANCE`` | u32 | distance of each step|
1215 +-+-+-----------------------------------------+--------+----------------------+
1216 | | ``ETHTOOL_A_CABLE_TDR_NEST_AMPLITUDE`` | nested | Reflection amplitude |
1217 +-+-+-----------------------------------------+--------+----------------------+
1218 | | | ``ETHTOOL_A_CABLE_RESULTS_PAIR`` | u8 | pair number |
1219 +-+-+-----------------------------------------+--------+----------------------+
1220 | | | ``ETHTOOL_A_CABLE_AMPLITUDE_mV`` | s16 | Reflection amplitude |
1221 +-+-+-----------------------------------------+--------+----------------------+
1222 | | ``ETHTOOL_A_CABLE_TDR_NEST_AMPLITUDE`` | nested | Reflection amplitude |
1223 +-+-+-----------------------------------------+--------+----------------------+
1224 | | | ``ETHTOOL_A_CABLE_RESULTS_PAIR`` | u8 | pair number |
1225 +-+-+-----------------------------------------+--------+----------------------+
1226 | | | ``ETHTOOL_A_CABLE_AMPLITUDE_mV`` | s16 | Reflection amplitude |
1227 +-+-+-----------------------------------------+--------+----------------------+
1228 | | ``ETHTOOL_A_CABLE_TDR_NEST_AMPLITUDE`` | nested | Reflection amplitude |
1229 +-+-+-----------------------------------------+--------+----------------------+
1230 | | | ``ETHTOOL_A_CABLE_RESULTS_PAIR`` | u8 | pair number |
1231 +-+-+-----------------------------------------+--------+----------------------+
1232 | | | ``ETHTOOL_A_CABLE_AMPLITUDE_mV`` | s16 | Reflection amplitude |
1233 +-+-+-----------------------------------------+--------+----------------------+
1238 Gets information about the tunnel state NIC is aware of.
1242 ===================================== ====== ==========================
1243 ``ETHTOOL_A_TUNNEL_INFO_HEADER`` nested request header
1244 ===================================== ====== ==========================
1246 Kernel response contents:
1248 +---------------------------------------------+--------+---------------------+
1249 | ``ETHTOOL_A_TUNNEL_INFO_HEADER`` | nested | reply header |
1250 +---------------------------------------------+--------+---------------------+
1251 | ``ETHTOOL_A_TUNNEL_INFO_UDP_PORTS`` | nested | all UDP port tables |
1252 +-+-------------------------------------------+--------+---------------------+
1253 | | ``ETHTOOL_A_TUNNEL_UDP_TABLE`` | nested | one UDP port table |
1254 +-+-+-----------------------------------------+--------+---------------------+
1255 | | | ``ETHTOOL_A_TUNNEL_UDP_TABLE_SIZE`` | u32 | max size of the |
1257 +-+-+-----------------------------------------+--------+---------------------+
1258 | | | ``ETHTOOL_A_TUNNEL_UDP_TABLE_TYPES`` | bitset | tunnel types which |
1259 | | | | | table can hold |
1260 +-+-+-----------------------------------------+--------+---------------------+
1261 | | | ``ETHTOOL_A_TUNNEL_UDP_TABLE_ENTRY`` | nested | offloaded UDP port |
1262 +-+-+-+---------------------------------------+--------+---------------------+
1263 | | | | ``ETHTOOL_A_TUNNEL_UDP_ENTRY_PORT`` | be16 | UDP port |
1264 +-+-+-+---------------------------------------+--------+---------------------+
1265 | | | | ``ETHTOOL_A_TUNNEL_UDP_ENTRY_TYPE`` | u32 | tunnel type |
1266 +-+-+-+---------------------------------------+--------+---------------------+
1268 For UDP tunnel table empty ``ETHTOOL_A_TUNNEL_UDP_TABLE_TYPES`` indicates that
1269 the table contains static entries, hard-coded by the NIC.
1274 The following table maps ioctl commands to netlink commands providing their
1275 functionality. Entries with "n/a" in right column are commands which do not
1276 have their netlink replacement yet. Entries which "n/a" in the left column
1279 =================================== =====================================
1280 ioctl command netlink command
1281 =================================== =====================================
1282 ``ETHTOOL_GSET`` ``ETHTOOL_MSG_LINKINFO_GET``
1283 ``ETHTOOL_MSG_LINKMODES_GET``
1284 ``ETHTOOL_SSET`` ``ETHTOOL_MSG_LINKINFO_SET``
1285 ``ETHTOOL_MSG_LINKMODES_SET``
1286 ``ETHTOOL_GDRVINFO`` n/a
1287 ``ETHTOOL_GREGS`` n/a
1288 ``ETHTOOL_GWOL`` ``ETHTOOL_MSG_WOL_GET``
1289 ``ETHTOOL_SWOL`` ``ETHTOOL_MSG_WOL_SET``
1290 ``ETHTOOL_GMSGLVL`` ``ETHTOOL_MSG_DEBUG_GET``
1291 ``ETHTOOL_SMSGLVL`` ``ETHTOOL_MSG_DEBUG_SET``
1292 ``ETHTOOL_NWAY_RST`` n/a
1293 ``ETHTOOL_GLINK`` ``ETHTOOL_MSG_LINKSTATE_GET``
1294 ``ETHTOOL_GEEPROM`` n/a
1295 ``ETHTOOL_SEEPROM`` n/a
1296 ``ETHTOOL_GCOALESCE`` ``ETHTOOL_MSG_COALESCE_GET``
1297 ``ETHTOOL_SCOALESCE`` ``ETHTOOL_MSG_COALESCE_SET``
1298 ``ETHTOOL_GRINGPARAM`` ``ETHTOOL_MSG_RINGS_GET``
1299 ``ETHTOOL_SRINGPARAM`` ``ETHTOOL_MSG_RINGS_SET``
1300 ``ETHTOOL_GPAUSEPARAM`` ``ETHTOOL_MSG_PAUSE_GET``
1301 ``ETHTOOL_SPAUSEPARAM`` ``ETHTOOL_MSG_PAUSE_SET``
1302 ``ETHTOOL_GRXCSUM`` ``ETHTOOL_MSG_FEATURES_GET``
1303 ``ETHTOOL_SRXCSUM`` ``ETHTOOL_MSG_FEATURES_SET``
1304 ``ETHTOOL_GTXCSUM`` ``ETHTOOL_MSG_FEATURES_GET``
1305 ``ETHTOOL_STXCSUM`` ``ETHTOOL_MSG_FEATURES_SET``
1306 ``ETHTOOL_GSG`` ``ETHTOOL_MSG_FEATURES_GET``
1307 ``ETHTOOL_SSG`` ``ETHTOOL_MSG_FEATURES_SET``
1308 ``ETHTOOL_TEST`` n/a
1309 ``ETHTOOL_GSTRINGS`` ``ETHTOOL_MSG_STRSET_GET``
1310 ``ETHTOOL_PHYS_ID`` n/a
1311 ``ETHTOOL_GSTATS`` n/a
1312 ``ETHTOOL_GTSO`` ``ETHTOOL_MSG_FEATURES_GET``
1313 ``ETHTOOL_STSO`` ``ETHTOOL_MSG_FEATURES_SET``
1314 ``ETHTOOL_GPERMADDR`` rtnetlink ``RTM_GETLINK``
1315 ``ETHTOOL_GUFO`` ``ETHTOOL_MSG_FEATURES_GET``
1316 ``ETHTOOL_SUFO`` ``ETHTOOL_MSG_FEATURES_SET``
1317 ``ETHTOOL_GGSO`` ``ETHTOOL_MSG_FEATURES_GET``
1318 ``ETHTOOL_SGSO`` ``ETHTOOL_MSG_FEATURES_SET``
1319 ``ETHTOOL_GFLAGS`` ``ETHTOOL_MSG_FEATURES_GET``
1320 ``ETHTOOL_SFLAGS`` ``ETHTOOL_MSG_FEATURES_SET``
1321 ``ETHTOOL_GPFLAGS`` ``ETHTOOL_MSG_PRIVFLAGS_GET``
1322 ``ETHTOOL_SPFLAGS`` ``ETHTOOL_MSG_PRIVFLAGS_SET``
1323 ``ETHTOOL_GRXFH`` n/a
1324 ``ETHTOOL_SRXFH`` n/a
1325 ``ETHTOOL_GGRO`` ``ETHTOOL_MSG_FEATURES_GET``
1326 ``ETHTOOL_SGRO`` ``ETHTOOL_MSG_FEATURES_SET``
1327 ``ETHTOOL_GRXRINGS`` n/a
1328 ``ETHTOOL_GRXCLSRLCNT`` n/a
1329 ``ETHTOOL_GRXCLSRULE`` n/a
1330 ``ETHTOOL_GRXCLSRLALL`` n/a
1331 ``ETHTOOL_SRXCLSRLDEL`` n/a
1332 ``ETHTOOL_SRXCLSRLINS`` n/a
1333 ``ETHTOOL_FLASHDEV`` n/a
1334 ``ETHTOOL_RESET`` n/a
1335 ``ETHTOOL_SRXNTUPLE`` n/a
1336 ``ETHTOOL_GRXNTUPLE`` n/a
1337 ``ETHTOOL_GSSET_INFO`` ``ETHTOOL_MSG_STRSET_GET``
1338 ``ETHTOOL_GRXFHINDIR`` n/a
1339 ``ETHTOOL_SRXFHINDIR`` n/a
1340 ``ETHTOOL_GFEATURES`` ``ETHTOOL_MSG_FEATURES_GET``
1341 ``ETHTOOL_SFEATURES`` ``ETHTOOL_MSG_FEATURES_SET``
1342 ``ETHTOOL_GCHANNELS`` ``ETHTOOL_MSG_CHANNELS_GET``
1343 ``ETHTOOL_SCHANNELS`` ``ETHTOOL_MSG_CHANNELS_SET``
1344 ``ETHTOOL_SET_DUMP`` n/a
1345 ``ETHTOOL_GET_DUMP_FLAG`` n/a
1346 ``ETHTOOL_GET_DUMP_DATA`` n/a
1347 ``ETHTOOL_GET_TS_INFO`` ``ETHTOOL_MSG_TSINFO_GET``
1348 ``ETHTOOL_GMODULEINFO`` n/a
1349 ``ETHTOOL_GMODULEEEPROM`` n/a
1350 ``ETHTOOL_GEEE`` ``ETHTOOL_MSG_EEE_GET``
1351 ``ETHTOOL_SEEE`` ``ETHTOOL_MSG_EEE_SET``
1352 ``ETHTOOL_GRSSH`` n/a
1353 ``ETHTOOL_SRSSH`` n/a
1354 ``ETHTOOL_GTUNABLE`` n/a
1355 ``ETHTOOL_STUNABLE`` n/a
1356 ``ETHTOOL_GPHYSTATS`` n/a
1357 ``ETHTOOL_PERQUEUE`` n/a
1358 ``ETHTOOL_GLINKSETTINGS`` ``ETHTOOL_MSG_LINKINFO_GET``
1359 ``ETHTOOL_MSG_LINKMODES_GET``
1360 ``ETHTOOL_SLINKSETTINGS`` ``ETHTOOL_MSG_LINKINFO_SET``
1361 ``ETHTOOL_MSG_LINKMODES_SET``
1362 ``ETHTOOL_PHY_GTUNABLE`` n/a
1363 ``ETHTOOL_PHY_STUNABLE`` n/a
1364 ``ETHTOOL_GFECPARAM`` n/a
1365 ``ETHTOOL_SFECPARAM`` n/a
1366 n/a ''ETHTOOL_MSG_CABLE_TEST_ACT''
1367 n/a ''ETHTOOL_MSG_CABLE_TEST_TDR_ACT''
1368 n/a ``ETHTOOL_MSG_TUNNEL_INFO_GET``
1369 =================================== =====================================