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 ``ETHTOOL_FLAG_STATS`` include optional device statistics
72 ================================= ===================================
74 New request flags should follow the general idea that if the flag is not set,
75 the behaviour is backward compatible, i.e. requests from old clients not aware
76 of the flag should be interpreted the way the client expects. A client must
77 not set flags it does not understand.
83 For short bitmaps of (reasonably) fixed length, standard ``NLA_BITFIELD32``
84 type is used. For arbitrary length bitmaps, ethtool netlink uses a nested
85 attribute with contents of one of two forms: compact (two binary bitmaps
86 representing bit values and mask of affected bits) and bit-by-bit (list of
87 bits identified by either index or name).
89 Verbose (bit-by-bit) bitsets allow sending symbolic names for bits together
90 with their values which saves a round trip (when the bitset is passed in a
91 request) or at least a second request (when the bitset is in a reply). This is
92 useful for one shot applications like traditional ethtool command. On the
93 other hand, long running applications like ethtool monitor (displaying
94 notifications) or network management daemons may prefer fetching the names
95 only once and using compact form to save message size. Notifications from
96 ethtool netlink interface always use compact form for bitsets.
98 A bitset can represent either a value/mask pair (``ETHTOOL_A_BITSET_NOMASK``
99 not set) or a single bitmap (``ETHTOOL_A_BITSET_NOMASK`` set). In requests
100 modifying a bitmap, the former changes the bit set in mask to values set in
101 value and preserves the rest; the latter sets the bits set in the bitmap and
104 Compact form: nested (bitset) atrribute contents:
106 ============================ ====== ============================
107 ``ETHTOOL_A_BITSET_NOMASK`` flag no mask, only a list
108 ``ETHTOOL_A_BITSET_SIZE`` u32 number of significant bits
109 ``ETHTOOL_A_BITSET_VALUE`` binary bitmap of bit values
110 ``ETHTOOL_A_BITSET_MASK`` binary bitmap of valid bits
111 ============================ ====== ============================
113 Value and mask must have length at least ``ETHTOOL_A_BITSET_SIZE`` bits
114 rounded up to a multiple of 32 bits. They consist of 32-bit words in host byte
115 order, words ordered from least significant to most significant (i.e. the same
116 way as bitmaps are passed with ioctl interface).
118 For compact form, ``ETHTOOL_A_BITSET_SIZE`` and ``ETHTOOL_A_BITSET_VALUE`` are
119 mandatory. ``ETHTOOL_A_BITSET_MASK`` attribute is mandatory if
120 ``ETHTOOL_A_BITSET_NOMASK`` is not set (bitset represents a value/mask pair);
121 if ``ETHTOOL_A_BITSET_NOMASK`` is not set, ``ETHTOOL_A_BITSET_MASK`` is not
122 allowed (bitset represents a single bitmap.
124 Kernel bit set length may differ from userspace length if older application is
125 used on newer kernel or vice versa. If userspace bitmap is longer, an error is
126 issued only if the request actually tries to set values of some bits not
127 recognized by kernel.
129 Bit-by-bit form: nested (bitset) attribute contents:
131 +------------------------------------+--------+-----------------------------+
132 | ``ETHTOOL_A_BITSET_NOMASK`` | flag | no mask, only a list |
133 +------------------------------------+--------+-----------------------------+
134 | ``ETHTOOL_A_BITSET_SIZE`` | u32 | number of significant bits |
135 +------------------------------------+--------+-----------------------------+
136 | ``ETHTOOL_A_BITSET_BITS`` | nested | array of bits |
137 +-+----------------------------------+--------+-----------------------------+
138 | | ``ETHTOOL_A_BITSET_BITS_BIT+`` | nested | one bit |
139 +-+-+--------------------------------+--------+-----------------------------+
140 | | | ``ETHTOOL_A_BITSET_BIT_INDEX`` | u32 | bit index (0 for LSB) |
141 +-+-+--------------------------------+--------+-----------------------------+
142 | | | ``ETHTOOL_A_BITSET_BIT_NAME`` | string | bit name |
143 +-+-+--------------------------------+--------+-----------------------------+
144 | | | ``ETHTOOL_A_BITSET_BIT_VALUE`` | flag | present if bit is set |
145 +-+-+--------------------------------+--------+-----------------------------+
147 Bit size is optional for bit-by-bit form. ``ETHTOOL_A_BITSET_BITS`` nest can
148 only contain ``ETHTOOL_A_BITSET_BITS_BIT`` attributes but there can be an
149 arbitrary number of them. A bit may be identified by its index or by its
150 name. When used in requests, listed bits are set to 0 or 1 according to
151 ``ETHTOOL_A_BITSET_BIT_VALUE``, the rest is preserved. A request fails if
152 index exceeds kernel bit length or if name is not recognized.
154 When ``ETHTOOL_A_BITSET_NOMASK`` flag is present, bitset is interpreted as
155 a simple bitmap. ``ETHTOOL_A_BITSET_BIT_VALUE`` attributes are not used in
156 such case. Such bitset represents a bitmap with listed bits set and the rest
159 In requests, application can use either form. Form used by kernel in reply is
160 determined by ``ETHTOOL_FLAG_COMPACT_BITSETS`` flag in flags field of request
161 header. Semantics of value and mask depends on the attribute.
164 List of message types
165 =====================
167 All constants identifying message types use ``ETHTOOL_CMD_`` prefix and suffix
168 according to message purpose:
170 ============== ======================================
171 ``_GET`` userspace request to retrieve data
172 ``_SET`` userspace request to set data
173 ``_ACT`` userspace request to perform an action
174 ``_GET_REPLY`` kernel reply to a ``GET`` request
175 ``_SET_REPLY`` kernel reply to a ``SET`` request
176 ``_ACT_REPLY`` kernel reply to an ``ACT`` request
177 ``_NTF`` kernel notification
178 ============== ======================================
182 ===================================== ================================
183 ``ETHTOOL_MSG_STRSET_GET`` get string set
184 ``ETHTOOL_MSG_LINKINFO_GET`` get link settings
185 ``ETHTOOL_MSG_LINKINFO_SET`` set link settings
186 ``ETHTOOL_MSG_LINKMODES_GET`` get link modes info
187 ``ETHTOOL_MSG_LINKMODES_SET`` set link modes info
188 ``ETHTOOL_MSG_LINKSTATE_GET`` get link state
189 ``ETHTOOL_MSG_DEBUG_GET`` get debugging settings
190 ``ETHTOOL_MSG_DEBUG_SET`` set debugging settings
191 ``ETHTOOL_MSG_WOL_GET`` get wake-on-lan settings
192 ``ETHTOOL_MSG_WOL_SET`` set wake-on-lan settings
193 ``ETHTOOL_MSG_FEATURES_GET`` get device features
194 ``ETHTOOL_MSG_FEATURES_SET`` set device features
195 ``ETHTOOL_MSG_PRIVFLAGS_GET`` get private flags
196 ``ETHTOOL_MSG_PRIVFLAGS_SET`` set private flags
197 ``ETHTOOL_MSG_RINGS_GET`` get ring sizes
198 ``ETHTOOL_MSG_RINGS_SET`` set ring sizes
199 ``ETHTOOL_MSG_CHANNELS_GET`` get channel counts
200 ``ETHTOOL_MSG_CHANNELS_SET`` set channel counts
201 ``ETHTOOL_MSG_COALESCE_GET`` get coalescing parameters
202 ``ETHTOOL_MSG_COALESCE_SET`` set coalescing parameters
203 ``ETHTOOL_MSG_PAUSE_GET`` get pause parameters
204 ``ETHTOOL_MSG_PAUSE_SET`` set pause parameters
205 ``ETHTOOL_MSG_EEE_GET`` get EEE settings
206 ``ETHTOOL_MSG_EEE_SET`` set EEE settings
207 ``ETHTOOL_MSG_TSINFO_GET`` get timestamping info
208 ``ETHTOOL_MSG_CABLE_TEST_ACT`` action start cable test
209 ``ETHTOOL_MSG_CABLE_TEST_TDR_ACT`` action start raw TDR cable test
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 ===================================== =================================
245 ``GET`` requests are sent by userspace applications to retrieve device
246 information. They usually do not contain any message specific attributes.
247 Kernel replies with corresponding "GET_REPLY" message. For most types, ``GET``
248 request with ``NLM_F_DUMP`` and no device identification can be used to query
249 the information for all devices supporting the request.
251 If the data can be also modified, corresponding ``SET`` message with the same
252 layout as corresponding ``GET_REPLY`` is used to request changes. Only
253 attributes where a change is requested are included in such request (also, not
254 all attributes may be changed). Replies to most ``SET`` request consist only
255 of error code and extack; if kernel provides additional data, it is sent in
256 the form of corresponding ``SET_REPLY`` message which can be suppressed by
257 setting ``ETHTOOL_FLAG_OMIT_REPLY`` flag in request header.
259 Data modification also triggers sending a ``NTF`` message with a notification.
260 These usually bear only a subset of attributes which was affected by the
261 change. The same notification is issued if the data is modified using other
262 means (mostly ioctl ethtool interface). Unlike notifications from ethtool
263 netlink code which are only sent if something actually changed, notifications
264 triggered by ioctl interface may be sent even if the request did not actually
267 ``ACT`` messages request kernel (driver) to perform a specific action. If some
268 information is reported by kernel (which can be suppressed by setting
269 ``ETHTOOL_FLAG_OMIT_REPLY`` flag in request header), the reply takes form of
270 an ``ACT_REPLY`` message. Performing an action also triggers a notification
273 Later sections describe the format and semantics of these messages.
279 Requests contents of a string set as provided by ioctl commands
280 ``ETHTOOL_GSSET_INFO`` and ``ETHTOOL_GSTRINGS.`` String sets are not user
281 writeable so that the corresponding ``STRSET_SET`` message is only used in
282 kernel replies. There are two types of string sets: global (independent of
283 a device, e.g. device feature names) and device specific (e.g. device private
288 +---------------------------------------+--------+------------------------+
289 | ``ETHTOOL_A_STRSET_HEADER`` | nested | request header |
290 +---------------------------------------+--------+------------------------+
291 | ``ETHTOOL_A_STRSET_STRINGSETS`` | nested | string set to request |
292 +-+-------------------------------------+--------+------------------------+
293 | | ``ETHTOOL_A_STRINGSETS_STRINGSET+`` | nested | one string set |
294 +-+-+-----------------------------------+--------+------------------------+
295 | | | ``ETHTOOL_A_STRINGSET_ID`` | u32 | set id |
296 +-+-+-----------------------------------+--------+------------------------+
298 Kernel response contents:
300 +---------------------------------------+--------+-----------------------+
301 | ``ETHTOOL_A_STRSET_HEADER`` | nested | reply header |
302 +---------------------------------------+--------+-----------------------+
303 | ``ETHTOOL_A_STRSET_STRINGSETS`` | nested | array of string sets |
304 +-+-------------------------------------+--------+-----------------------+
305 | | ``ETHTOOL_A_STRINGSETS_STRINGSET+`` | nested | one string set |
306 +-+-+-----------------------------------+--------+-----------------------+
307 | | | ``ETHTOOL_A_STRINGSET_ID`` | u32 | set id |
308 +-+-+-----------------------------------+--------+-----------------------+
309 | | | ``ETHTOOL_A_STRINGSET_COUNT`` | u32 | number of strings |
310 +-+-+-----------------------------------+--------+-----------------------+
311 | | | ``ETHTOOL_A_STRINGSET_STRINGS`` | nested | array of strings |
312 +-+-+-+---------------------------------+--------+-----------------------+
313 | | | | ``ETHTOOL_A_STRINGS_STRING+`` | nested | one string |
314 +-+-+-+-+-------------------------------+--------+-----------------------+
315 | | | | | ``ETHTOOL_A_STRING_INDEX`` | u32 | string index |
316 +-+-+-+-+-------------------------------+--------+-----------------------+
317 | | | | | ``ETHTOOL_A_STRING_VALUE`` | string | string value |
318 +-+-+-+-+-------------------------------+--------+-----------------------+
319 | ``ETHTOOL_A_STRSET_COUNTS_ONLY`` | flag | return only counts |
320 +---------------------------------------+--------+-----------------------+
322 Device identification in request header is optional. Depending on its presence
323 a and ``NLM_F_DUMP`` flag, there are three type of ``STRSET_GET`` requests:
325 - no ``NLM_F_DUMP,`` no device: get "global" stringsets
326 - no ``NLM_F_DUMP``, with device: get string sets related to the device
327 - ``NLM_F_DUMP``, no device: get device related string sets for all devices
329 If there is no ``ETHTOOL_A_STRSET_STRINGSETS`` array, all string sets of
330 requested type are returned, otherwise only those specified in the request.
331 Flag ``ETHTOOL_A_STRSET_COUNTS_ONLY`` tells kernel to only return string
332 counts of the sets, not the actual strings.
338 Requests link settings as provided by ``ETHTOOL_GLINKSETTINGS`` except for
339 link modes and autonegotiation related information. The request does not use
344 ==================================== ====== ==========================
345 ``ETHTOOL_A_LINKINFO_HEADER`` nested request header
346 ==================================== ====== ==========================
348 Kernel response contents:
350 ==================================== ====== ==========================
351 ``ETHTOOL_A_LINKINFO_HEADER`` nested reply header
352 ``ETHTOOL_A_LINKINFO_PORT`` u8 physical port
353 ``ETHTOOL_A_LINKINFO_PHYADDR`` u8 phy MDIO address
354 ``ETHTOOL_A_LINKINFO_TP_MDIX`` u8 MDI(-X) status
355 ``ETHTOOL_A_LINKINFO_TP_MDIX_CTRL`` u8 MDI(-X) control
356 ``ETHTOOL_A_LINKINFO_TRANSCEIVER`` u8 transceiver
357 ==================================== ====== ==========================
359 Attributes and their values have the same meaning as matching members of the
360 corresponding ioctl structures.
362 ``LINKINFO_GET`` allows dump requests (kernel returns reply message for all
363 devices supporting the request).
369 ``LINKINFO_SET`` request allows setting some of the attributes reported by
374 ==================================== ====== ==========================
375 ``ETHTOOL_A_LINKINFO_HEADER`` nested request header
376 ``ETHTOOL_A_LINKINFO_PORT`` u8 physical port
377 ``ETHTOOL_A_LINKINFO_PHYADDR`` u8 phy MDIO address
378 ``ETHTOOL_A_LINKINFO_TP_MDIX_CTRL`` u8 MDI(-X) control
379 ==================================== ====== ==========================
381 MDI(-X) status and transceiver cannot be set, request with the corresponding
382 attributes is rejected.
388 Requests link modes (supported, advertised and peer advertised) and related
389 information (autonegotiation status, link speed and duplex) as provided by
390 ``ETHTOOL_GLINKSETTINGS``. The request does not use any attributes.
394 ==================================== ====== ==========================
395 ``ETHTOOL_A_LINKMODES_HEADER`` nested request header
396 ==================================== ====== ==========================
398 Kernel response contents:
400 ========================================== ====== ==========================
401 ``ETHTOOL_A_LINKMODES_HEADER`` nested reply header
402 ``ETHTOOL_A_LINKMODES_AUTONEG`` u8 autonegotiation status
403 ``ETHTOOL_A_LINKMODES_OURS`` bitset advertised link modes
404 ``ETHTOOL_A_LINKMODES_PEER`` bitset partner link modes
405 ``ETHTOOL_A_LINKMODES_SPEED`` u32 link speed (Mb/s)
406 ``ETHTOOL_A_LINKMODES_DUPLEX`` u8 duplex mode
407 ``ETHTOOL_A_LINKMODES_MASTER_SLAVE_CFG`` u8 Master/slave port mode
408 ``ETHTOOL_A_LINKMODES_MASTER_SLAVE_STATE`` u8 Master/slave port state
409 ========================================== ====== ==========================
411 For ``ETHTOOL_A_LINKMODES_OURS``, value represents advertised modes and mask
412 represents supported modes. ``ETHTOOL_A_LINKMODES_PEER`` in the reply is a bit
415 ``LINKMODES_GET`` allows dump requests (kernel returns reply messages for all
416 devices supporting the request).
424 ========================================== ====== ==========================
425 ``ETHTOOL_A_LINKMODES_HEADER`` nested request header
426 ``ETHTOOL_A_LINKMODES_AUTONEG`` u8 autonegotiation status
427 ``ETHTOOL_A_LINKMODES_OURS`` bitset advertised link modes
428 ``ETHTOOL_A_LINKMODES_PEER`` bitset partner link modes
429 ``ETHTOOL_A_LINKMODES_SPEED`` u32 link speed (Mb/s)
430 ``ETHTOOL_A_LINKMODES_DUPLEX`` u8 duplex mode
431 ``ETHTOOL_A_LINKMODES_MASTER_SLAVE_CFG`` u8 Master/slave port mode
432 ========================================== ====== ==========================
434 ``ETHTOOL_A_LINKMODES_OURS`` bit set allows setting advertised link modes. If
435 autonegotiation is on (either set now or kept from before), advertised modes
436 are not changed (no ``ETHTOOL_A_LINKMODES_OURS`` attribute) and at least one
437 of speed and duplex is specified, kernel adjusts advertised modes to all
438 supported modes matching speed, duplex or both (whatever is specified). This
439 autoselection is done on ethtool side with ioctl interface, netlink interface
440 is supposed to allow requesting changes without knowing what exactly kernel
447 Requests link state information. Link up/down flag (as provided by
448 ``ETHTOOL_GLINK`` ioctl command) is provided. Optionally, extended state might
449 be provided as well. In general, extended state describes reasons for why a port
450 is down, or why it operates in some non-obvious mode. This request does not have
455 ==================================== ====== ==========================
456 ``ETHTOOL_A_LINKSTATE_HEADER`` nested request header
457 ==================================== ====== ==========================
459 Kernel response contents:
461 ==================================== ====== ============================
462 ``ETHTOOL_A_LINKSTATE_HEADER`` nested reply header
463 ``ETHTOOL_A_LINKSTATE_LINK`` bool link state (up/down)
464 ``ETHTOOL_A_LINKSTATE_SQI`` u32 Current Signal Quality Index
465 ``ETHTOOL_A_LINKSTATE_SQI_MAX`` u32 Max support SQI value
466 ``ETHTOOL_A_LINKSTATE_EXT_STATE`` u8 link extended state
467 ``ETHTOOL_A_LINKSTATE_EXT_SUBSTATE`` u8 link extended substate
468 ==================================== ====== ============================
470 For most NIC drivers, the value of ``ETHTOOL_A_LINKSTATE_LINK`` returns
471 carrier flag provided by ``netif_carrier_ok()`` but there are drivers which
472 define their own handler.
474 ``ETHTOOL_A_LINKSTATE_EXT_STATE`` and ``ETHTOOL_A_LINKSTATE_EXT_SUBSTATE`` are
475 optional values. ethtool core can provide either both
476 ``ETHTOOL_A_LINKSTATE_EXT_STATE`` and ``ETHTOOL_A_LINKSTATE_EXT_SUBSTATE``,
477 or only ``ETHTOOL_A_LINKSTATE_EXT_STATE``, or none of them.
479 ``LINKSTATE_GET`` allows dump requests (kernel returns reply messages for all
480 devices supporting the request).
483 Link extended states:
485 ================================================ ============================================
486 ``ETHTOOL_LINK_EXT_STATE_AUTONEG`` States relating to the autonegotiation or
489 ``ETHTOOL_LINK_EXT_STATE_LINK_TRAINING_FAILURE`` Failure during link training
491 ``ETHTOOL_LINK_EXT_STATE_LINK_LOGICAL_MISMATCH`` Logical mismatch in physical coding sublayer
492 or forward error correction sublayer
494 ``ETHTOOL_LINK_EXT_STATE_BAD_SIGNAL_INTEGRITY`` Signal integrity issues
496 ``ETHTOOL_LINK_EXT_STATE_NO_CABLE`` No cable connected
498 ``ETHTOOL_LINK_EXT_STATE_CABLE_ISSUE`` Failure is related to cable,
499 e.g., unsupported cable
501 ``ETHTOOL_LINK_EXT_STATE_EEPROM_ISSUE`` Failure is related to EEPROM, e.g., failure
502 during reading or parsing the data
504 ``ETHTOOL_LINK_EXT_STATE_CALIBRATION_FAILURE`` Failure during calibration algorithm
506 ``ETHTOOL_LINK_EXT_STATE_POWER_BUDGET_EXCEEDED`` The hardware is not able to provide the
507 power required from cable or module
509 ``ETHTOOL_LINK_EXT_STATE_OVERHEAT`` The module is overheated
510 ================================================ ============================================
512 Link extended substates:
516 =============================================================== ================================
517 ``ETHTOOL_LINK_EXT_SUBSTATE_AN_NO_PARTNER_DETECTED`` Peer side is down
519 ``ETHTOOL_LINK_EXT_SUBSTATE_AN_ACK_NOT_RECEIVED`` Ack not received from peer side
521 ``ETHTOOL_LINK_EXT_SUBSTATE_AN_NEXT_PAGE_EXCHANGE_FAILED`` Next page exchange failed
523 ``ETHTOOL_LINK_EXT_SUBSTATE_AN_NO_PARTNER_DETECTED_FORCE_MODE`` Peer side is down during force
524 mode or there is no agreement of
527 ``ETHTOOL_LINK_EXT_SUBSTATE_AN_FEC_MISMATCH_DURING_OVERRIDE`` Forward error correction modes
528 in both sides are mismatched
530 ``ETHTOOL_LINK_EXT_SUBSTATE_AN_NO_HCD`` No Highest Common Denominator
531 =============================================================== ================================
533 Link training substates:
535 =========================================================================== ====================
536 ``ETHTOOL_LINK_EXT_SUBSTATE_LT_KR_FRAME_LOCK_NOT_ACQUIRED`` Frames were not
540 ``ETHTOOL_LINK_EXT_SUBSTATE_LT_KR_LINK_INHIBIT_TIMEOUT`` The lock did not
544 ``ETHTOOL_LINK_EXT_SUBSTATE_LT_KR_LINK_PARTNER_DID_NOT_SET_RECEIVER_READY`` Peer side did not
549 ``ETHTOOL_LINK_EXT_SUBSTATE_LT_REMOTE_FAULT`` Remote side is not
551 =========================================================================== ====================
553 Link logical mismatch substates:
555 ================================================================ ===============================
556 ``ETHTOOL_LINK_EXT_SUBSTATE_LLM_PCS_DID_NOT_ACQUIRE_BLOCK_LOCK`` Physical coding sublayer was
557 not locked in first phase -
560 ``ETHTOOL_LINK_EXT_SUBSTATE_LLM_PCS_DID_NOT_ACQUIRE_AM_LOCK`` Physical coding sublayer was
561 not locked in second phase -
562 alignment markers lock
564 ``ETHTOOL_LINK_EXT_SUBSTATE_LLM_PCS_DID_NOT_GET_ALIGN_STATUS`` Physical coding sublayer did
567 ``ETHTOOL_LINK_EXT_SUBSTATE_LLM_FC_FEC_IS_NOT_LOCKED`` FC forward error correction is
570 ``ETHTOOL_LINK_EXT_SUBSTATE_LLM_RS_FEC_IS_NOT_LOCKED`` RS forward error correction is
572 ================================================================ ===============================
574 Bad signal integrity substates:
576 ================================================================= =============================
577 ``ETHTOOL_LINK_EXT_SUBSTATE_BSI_LARGE_NUMBER_OF_PHYSICAL_ERRORS`` Large number of physical
580 ``ETHTOOL_LINK_EXT_SUBSTATE_BSI_UNSUPPORTED_RATE`` The system attempted to
581 operate the cable at a rate
583 supported, which led to
584 signal integrity issues
585 ================================================================= =============================
587 Cable issue substates:
589 =================================================== ============================================
590 ``ETHTOOL_LINK_EXT_SUBSTATE_CI_UNSUPPORTED_CABLE`` Unsupported cable
592 ``ETHTOOL_LINK_EXT_SUBSTATE_CI_CABLE_TEST_FAILURE`` Cable test failure
593 =================================================== ============================================
598 Requests debugging settings of a device. At the moment, only message mask is
603 ==================================== ====== ==========================
604 ``ETHTOOL_A_DEBUG_HEADER`` nested request header
605 ==================================== ====== ==========================
607 Kernel response contents:
609 ==================================== ====== ==========================
610 ``ETHTOOL_A_DEBUG_HEADER`` nested reply header
611 ``ETHTOOL_A_DEBUG_MSGMASK`` bitset message mask
612 ==================================== ====== ==========================
614 The message mask (``ETHTOOL_A_DEBUG_MSGMASK``) is equal to message level as
615 provided by ``ETHTOOL_GMSGLVL`` and set by ``ETHTOOL_SMSGLVL`` in ioctl
616 interface. While it is called message level there for historical reasons, most
617 drivers and almost all newer drivers use it as a mask of enabled message
618 classes (represented by ``NETIF_MSG_*`` constants); therefore netlink
619 interface follows its actual use in practice.
621 ``DEBUG_GET`` allows dump requests (kernel returns reply messages for all
622 devices supporting the request).
628 Set or update debugging settings of a device. At the moment, only message mask
633 ==================================== ====== ==========================
634 ``ETHTOOL_A_DEBUG_HEADER`` nested request header
635 ``ETHTOOL_A_DEBUG_MSGMASK`` bitset message mask
636 ==================================== ====== ==========================
638 ``ETHTOOL_A_DEBUG_MSGMASK`` bit set allows setting or modifying mask of
639 enabled debugging message types for the device.
645 Query device wake-on-lan settings. Unlike most "GET" type requests,
646 ``ETHTOOL_MSG_WOL_GET`` requires (netns) ``CAP_NET_ADMIN`` privileges as it
647 (potentially) provides SecureOn(tm) password which is confidential.
651 ==================================== ====== ==========================
652 ``ETHTOOL_A_WOL_HEADER`` nested request header
653 ==================================== ====== ==========================
655 Kernel response contents:
657 ==================================== ====== ==========================
658 ``ETHTOOL_A_WOL_HEADER`` nested reply header
659 ``ETHTOOL_A_WOL_MODES`` bitset mask of enabled WoL modes
660 ``ETHTOOL_A_WOL_SOPASS`` binary SecureOn(tm) password
661 ==================================== ====== ==========================
663 In reply, ``ETHTOOL_A_WOL_MODES`` mask consists of modes supported by the
664 device, value of modes which are enabled. ``ETHTOOL_A_WOL_SOPASS`` is only
665 included in reply if ``WAKE_MAGICSECURE`` mode is supported.
671 Set or update wake-on-lan settings.
675 ==================================== ====== ==========================
676 ``ETHTOOL_A_WOL_HEADER`` nested request header
677 ``ETHTOOL_A_WOL_MODES`` bitset enabled WoL modes
678 ``ETHTOOL_A_WOL_SOPASS`` binary SecureOn(tm) password
679 ==================================== ====== ==========================
681 ``ETHTOOL_A_WOL_SOPASS`` is only allowed for devices supporting
682 ``WAKE_MAGICSECURE`` mode.
688 Gets netdev features like ``ETHTOOL_GFEATURES`` ioctl request.
692 ==================================== ====== ==========================
693 ``ETHTOOL_A_FEATURES_HEADER`` nested request header
694 ==================================== ====== ==========================
696 Kernel response contents:
698 ==================================== ====== ==========================
699 ``ETHTOOL_A_FEATURES_HEADER`` nested reply header
700 ``ETHTOOL_A_FEATURES_HW`` bitset dev->hw_features
701 ``ETHTOOL_A_FEATURES_WANTED`` bitset dev->wanted_features
702 ``ETHTOOL_A_FEATURES_ACTIVE`` bitset dev->features
703 ``ETHTOOL_A_FEATURES_NOCHANGE`` bitset NETIF_F_NEVER_CHANGE
704 ==================================== ====== ==========================
706 Bitmaps in kernel response have the same meaning as bitmaps used in ioctl
707 interference but attribute names are different (they are based on
708 corresponding members of struct net_device). Legacy "flags" are not provided,
709 if userspace needs them (most likely only ethtool for backward compatibility),
710 it can calculate their values from related feature bits itself.
711 ETHA_FEATURES_HW uses mask consisting of all features recognized by kernel (to
712 provide all names when using verbose bitmap format), the other three use no
713 mask (simple bit lists).
719 Request to set netdev features like ``ETHTOOL_SFEATURES`` ioctl request.
723 ==================================== ====== ==========================
724 ``ETHTOOL_A_FEATURES_HEADER`` nested request header
725 ``ETHTOOL_A_FEATURES_WANTED`` bitset requested features
726 ==================================== ====== ==========================
728 Kernel response contents:
730 ==================================== ====== ==========================
731 ``ETHTOOL_A_FEATURES_HEADER`` nested reply header
732 ``ETHTOOL_A_FEATURES_WANTED`` bitset diff wanted vs. result
733 ``ETHTOOL_A_FEATURES_ACTIVE`` bitset diff old vs. new active
734 ==================================== ====== ==========================
736 Request constains only one bitset which can be either value/mask pair (request
737 to change specific feature bits and leave the rest) or only a value (request
738 to set all features to specified set).
740 As request is subject to netdev_change_features() sanity checks, optional
741 kernel reply (can be suppressed by ``ETHTOOL_FLAG_OMIT_REPLY`` flag in request
742 header) informs client about the actual result. ``ETHTOOL_A_FEATURES_WANTED``
743 reports the difference between client request and actual result: mask consists
744 of bits which differ between requested features and result (dev->features
745 after the operation), value consists of values of these bits in the request
746 (i.e. negated values from resulting features). ``ETHTOOL_A_FEATURES_ACTIVE``
747 reports the difference between old and new dev->features: mask consists of
748 bits which have changed, values are their values in new dev->features (after
751 ``ETHTOOL_MSG_FEATURES_NTF`` notification is sent not only if device features
752 are modified using ``ETHTOOL_MSG_FEATURES_SET`` request or on of ethtool ioctl
753 request but also each time features are modified with netdev_update_features()
754 or netdev_change_features().
760 Gets private flags like ``ETHTOOL_GPFLAGS`` ioctl request.
764 ==================================== ====== ==========================
765 ``ETHTOOL_A_PRIVFLAGS_HEADER`` nested request header
766 ==================================== ====== ==========================
768 Kernel response contents:
770 ==================================== ====== ==========================
771 ``ETHTOOL_A_PRIVFLAGS_HEADER`` nested reply header
772 ``ETHTOOL_A_PRIVFLAGS_FLAGS`` bitset private flags
773 ==================================== ====== ==========================
775 ``ETHTOOL_A_PRIVFLAGS_FLAGS`` is a bitset with values of device private flags.
776 These flags are defined by driver, their number and names (and also meaning)
777 are device dependent. For compact bitset format, names can be retrieved as
778 ``ETH_SS_PRIV_FLAGS`` string set. If verbose bitset format is requested,
779 response uses all private flags supported by the device as mask so that client
780 gets the full information without having to fetch the string set with names.
786 Sets or modifies values of device private flags like ``ETHTOOL_SPFLAGS``
791 ==================================== ====== ==========================
792 ``ETHTOOL_A_PRIVFLAGS_HEADER`` nested request header
793 ``ETHTOOL_A_PRIVFLAGS_FLAGS`` bitset private flags
794 ==================================== ====== ==========================
796 ``ETHTOOL_A_PRIVFLAGS_FLAGS`` can either set the whole set of private flags or
797 modify only values of some of them.
803 Gets ring sizes like ``ETHTOOL_GRINGPARAM`` ioctl request.
807 ==================================== ====== ==========================
808 ``ETHTOOL_A_RINGS_HEADER`` nested request header
809 ==================================== ====== ==========================
811 Kernel response contents:
813 ==================================== ====== ==========================
814 ``ETHTOOL_A_RINGS_HEADER`` nested reply header
815 ``ETHTOOL_A_RINGS_RX_MAX`` u32 max size of RX ring
816 ``ETHTOOL_A_RINGS_RX_MINI_MAX`` u32 max size of RX mini ring
817 ``ETHTOOL_A_RINGS_RX_JUMBO_MAX`` u32 max size of RX jumbo ring
818 ``ETHTOOL_A_RINGS_TX_MAX`` u32 max size of TX ring
819 ``ETHTOOL_A_RINGS_RX`` u32 size of RX ring
820 ``ETHTOOL_A_RINGS_RX_MINI`` u32 size of RX mini ring
821 ``ETHTOOL_A_RINGS_RX_JUMBO`` u32 size of RX jumbo ring
822 ``ETHTOOL_A_RINGS_TX`` u32 size of TX ring
823 ==================================== ====== ==========================
829 Sets ring sizes like ``ETHTOOL_SRINGPARAM`` ioctl request.
833 ==================================== ====== ==========================
834 ``ETHTOOL_A_RINGS_HEADER`` nested reply header
835 ``ETHTOOL_A_RINGS_RX`` u32 size of RX ring
836 ``ETHTOOL_A_RINGS_RX_MINI`` u32 size of RX mini ring
837 ``ETHTOOL_A_RINGS_RX_JUMBO`` u32 size of RX jumbo ring
838 ``ETHTOOL_A_RINGS_TX`` u32 size of TX ring
839 ==================================== ====== ==========================
841 Kernel checks that requested ring sizes do not exceed limits reported by
842 driver. Driver may impose additional constraints and may not suspport all
849 Gets channel counts like ``ETHTOOL_GCHANNELS`` ioctl request.
853 ==================================== ====== ==========================
854 ``ETHTOOL_A_CHANNELS_HEADER`` nested request header
855 ==================================== ====== ==========================
857 Kernel response contents:
859 ===================================== ====== ==========================
860 ``ETHTOOL_A_CHANNELS_HEADER`` nested reply header
861 ``ETHTOOL_A_CHANNELS_RX_MAX`` u32 max receive channels
862 ``ETHTOOL_A_CHANNELS_TX_MAX`` u32 max transmit channels
863 ``ETHTOOL_A_CHANNELS_OTHER_MAX`` u32 max other channels
864 ``ETHTOOL_A_CHANNELS_COMBINED_MAX`` u32 max combined channels
865 ``ETHTOOL_A_CHANNELS_RX_COUNT`` u32 receive channel count
866 ``ETHTOOL_A_CHANNELS_TX_COUNT`` u32 transmit channel count
867 ``ETHTOOL_A_CHANNELS_OTHER_COUNT`` u32 other channel count
868 ``ETHTOOL_A_CHANNELS_COMBINED_COUNT`` u32 combined channel count
869 ===================================== ====== ==========================
875 Sets channel counts like ``ETHTOOL_SCHANNELS`` ioctl request.
879 ===================================== ====== ==========================
880 ``ETHTOOL_A_CHANNELS_HEADER`` nested request header
881 ``ETHTOOL_A_CHANNELS_RX_COUNT`` u32 receive channel count
882 ``ETHTOOL_A_CHANNELS_TX_COUNT`` u32 transmit channel count
883 ``ETHTOOL_A_CHANNELS_OTHER_COUNT`` u32 other channel count
884 ``ETHTOOL_A_CHANNELS_COMBINED_COUNT`` u32 combined channel count
885 ===================================== ====== ==========================
887 Kernel checks that requested channel counts do not exceed limits reported by
888 driver. Driver may impose additional constraints and may not suspport all
895 Gets coalescing parameters like ``ETHTOOL_GCOALESCE`` ioctl request.
899 ==================================== ====== ==========================
900 ``ETHTOOL_A_COALESCE_HEADER`` nested request header
901 ==================================== ====== ==========================
903 Kernel response contents:
905 =========================================== ====== =======================
906 ``ETHTOOL_A_COALESCE_HEADER`` nested reply header
907 ``ETHTOOL_A_COALESCE_RX_USECS`` u32 delay (us), normal Rx
908 ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES`` u32 max packets, normal Rx
909 ``ETHTOOL_A_COALESCE_RX_USECS_IRQ`` u32 delay (us), Rx in IRQ
910 ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES_IRQ`` u32 max packets, Rx in IRQ
911 ``ETHTOOL_A_COALESCE_TX_USECS`` u32 delay (us), normal Tx
912 ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES`` u32 max packets, normal Tx
913 ``ETHTOOL_A_COALESCE_TX_USECS_IRQ`` u32 delay (us), Tx in IRQ
914 ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES_IRQ`` u32 IRQ packets, Tx in IRQ
915 ``ETHTOOL_A_COALESCE_STATS_BLOCK_USECS`` u32 delay of stats update
916 ``ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX`` bool adaptive Rx coalesce
917 ``ETHTOOL_A_COALESCE_USE_ADAPTIVE_TX`` bool adaptive Tx coalesce
918 ``ETHTOOL_A_COALESCE_PKT_RATE_LOW`` u32 threshold for low rate
919 ``ETHTOOL_A_COALESCE_RX_USECS_LOW`` u32 delay (us), low Rx
920 ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES_LOW`` u32 max packets, low Rx
921 ``ETHTOOL_A_COALESCE_TX_USECS_LOW`` u32 delay (us), low Tx
922 ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES_LOW`` u32 max packets, low Tx
923 ``ETHTOOL_A_COALESCE_PKT_RATE_HIGH`` u32 threshold for high rate
924 ``ETHTOOL_A_COALESCE_RX_USECS_HIGH`` u32 delay (us), high Rx
925 ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES_HIGH`` u32 max packets, high Rx
926 ``ETHTOOL_A_COALESCE_TX_USECS_HIGH`` u32 delay (us), high Tx
927 ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH`` u32 max packets, high Tx
928 ``ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL`` u32 rate sampling interval
929 =========================================== ====== =======================
931 Attributes are only included in reply if their value is not zero or the
932 corresponding bit in ``ethtool_ops::supported_coalesce_params`` is set (i.e.
933 they are declared as supported by driver).
939 Sets coalescing parameters like ``ETHTOOL_SCOALESCE`` ioctl request.
943 =========================================== ====== =======================
944 ``ETHTOOL_A_COALESCE_HEADER`` nested request header
945 ``ETHTOOL_A_COALESCE_RX_USECS`` u32 delay (us), normal Rx
946 ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES`` u32 max packets, normal Rx
947 ``ETHTOOL_A_COALESCE_RX_USECS_IRQ`` u32 delay (us), Rx in IRQ
948 ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES_IRQ`` u32 max packets, Rx in IRQ
949 ``ETHTOOL_A_COALESCE_TX_USECS`` u32 delay (us), normal Tx
950 ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES`` u32 max packets, normal Tx
951 ``ETHTOOL_A_COALESCE_TX_USECS_IRQ`` u32 delay (us), Tx in IRQ
952 ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES_IRQ`` u32 IRQ packets, Tx in IRQ
953 ``ETHTOOL_A_COALESCE_STATS_BLOCK_USECS`` u32 delay of stats update
954 ``ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX`` bool adaptive Rx coalesce
955 ``ETHTOOL_A_COALESCE_USE_ADAPTIVE_TX`` bool adaptive Tx coalesce
956 ``ETHTOOL_A_COALESCE_PKT_RATE_LOW`` u32 threshold for low rate
957 ``ETHTOOL_A_COALESCE_RX_USECS_LOW`` u32 delay (us), low Rx
958 ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES_LOW`` u32 max packets, low Rx
959 ``ETHTOOL_A_COALESCE_TX_USECS_LOW`` u32 delay (us), low Tx
960 ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES_LOW`` u32 max packets, low Tx
961 ``ETHTOOL_A_COALESCE_PKT_RATE_HIGH`` u32 threshold for high rate
962 ``ETHTOOL_A_COALESCE_RX_USECS_HIGH`` u32 delay (us), high Rx
963 ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES_HIGH`` u32 max packets, high Rx
964 ``ETHTOOL_A_COALESCE_TX_USECS_HIGH`` u32 delay (us), high Tx
965 ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH`` u32 max packets, high Tx
966 ``ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL`` u32 rate sampling interval
967 =========================================== ====== =======================
969 Request is rejected if it attributes declared as unsupported by driver (i.e.
970 such that the corresponding bit in ``ethtool_ops::supported_coalesce_params``
971 is not set), regardless of their values. Driver may impose additional
972 constraints on coalescing parameters and their values.
978 Gets channel counts like ``ETHTOOL_GPAUSE`` ioctl request.
982 ===================================== ====== ==========================
983 ``ETHTOOL_A_PAUSE_HEADER`` nested request header
984 ===================================== ====== ==========================
986 Kernel response contents:
988 ===================================== ====== ==========================
989 ``ETHTOOL_A_PAUSE_HEADER`` nested request header
990 ``ETHTOOL_A_PAUSE_AUTONEG`` bool pause autonegotiation
991 ``ETHTOOL_A_PAUSE_RX`` bool receive pause frames
992 ``ETHTOOL_A_PAUSE_TX`` bool transmit pause frames
993 ``ETHTOOL_A_PAUSE_STATS`` nested pause statistics
994 ===================================== ====== ==========================
996 ``ETHTOOL_A_PAUSE_STATS`` are reported if ``ETHTOOL_FLAG_STATS`` was set
997 in ``ETHTOOL_A_HEADER_FLAGS``.
998 It will be empty if driver did not report any statistics. Drivers fill in
999 the statistics in the following structure:
1001 .. kernel-doc:: include/linux/ethtool.h
1002 :identifiers: ethtool_pause_stats
1004 Each member has a corresponding attribute defined.
1009 Sets pause parameters like ``ETHTOOL_GPAUSEPARAM`` ioctl request.
1013 ===================================== ====== ==========================
1014 ``ETHTOOL_A_PAUSE_HEADER`` nested request header
1015 ``ETHTOOL_A_PAUSE_AUTONEG`` bool pause autonegotiation
1016 ``ETHTOOL_A_PAUSE_RX`` bool receive pause frames
1017 ``ETHTOOL_A_PAUSE_TX`` bool transmit pause frames
1018 ===================================== ====== ==========================
1024 Gets channel counts like ``ETHTOOL_GEEE`` ioctl request.
1028 ===================================== ====== ==========================
1029 ``ETHTOOL_A_EEE_HEADER`` nested request header
1030 ===================================== ====== ==========================
1032 Kernel response contents:
1034 ===================================== ====== ==========================
1035 ``ETHTOOL_A_EEE_HEADER`` nested request header
1036 ``ETHTOOL_A_EEE_MODES_OURS`` bool supported/advertised modes
1037 ``ETHTOOL_A_EEE_MODES_PEER`` bool peer advertised link modes
1038 ``ETHTOOL_A_EEE_ACTIVE`` bool EEE is actively used
1039 ``ETHTOOL_A_EEE_ENABLED`` bool EEE is enabled
1040 ``ETHTOOL_A_EEE_TX_LPI_ENABLED`` bool Tx lpi enabled
1041 ``ETHTOOL_A_EEE_TX_LPI_TIMER`` u32 Tx lpi timeout (in us)
1042 ===================================== ====== ==========================
1044 In ``ETHTOOL_A_EEE_MODES_OURS``, mask consists of link modes for which EEE is
1045 enabled, value of link modes for which EEE is advertised. Link modes for which
1046 peer advertises EEE are listed in ``ETHTOOL_A_EEE_MODES_PEER`` (no mask). The
1047 netlink interface allows reporting EEE status for all link modes but only
1048 first 32 are provided by the ``ethtool_ops`` callback.
1054 Sets pause parameters like ``ETHTOOL_GEEEPARAM`` ioctl request.
1058 ===================================== ====== ==========================
1059 ``ETHTOOL_A_EEE_HEADER`` nested request header
1060 ``ETHTOOL_A_EEE_MODES_OURS`` bool advertised modes
1061 ``ETHTOOL_A_EEE_ENABLED`` bool EEE is enabled
1062 ``ETHTOOL_A_EEE_TX_LPI_ENABLED`` bool Tx lpi enabled
1063 ``ETHTOOL_A_EEE_TX_LPI_TIMER`` u32 Tx lpi timeout (in us)
1064 ===================================== ====== ==========================
1066 ``ETHTOOL_A_EEE_MODES_OURS`` is used to either list link modes to advertise
1067 EEE for (if there is no mask) or specify changes to the list (if there is
1068 a mask). The netlink interface allows reporting EEE status for all link modes
1069 but only first 32 can be set at the moment as that is what the ``ethtool_ops``
1076 Gets timestamping information like ``ETHTOOL_GET_TS_INFO`` ioctl request.
1080 ===================================== ====== ==========================
1081 ``ETHTOOL_A_TSINFO_HEADER`` nested request header
1082 ===================================== ====== ==========================
1084 Kernel response contents:
1086 ===================================== ====== ==========================
1087 ``ETHTOOL_A_TSINFO_HEADER`` nested request header
1088 ``ETHTOOL_A_TSINFO_TIMESTAMPING`` bitset SO_TIMESTAMPING flags
1089 ``ETHTOOL_A_TSINFO_TX_TYPES`` bitset supported Tx types
1090 ``ETHTOOL_A_TSINFO_RX_FILTERS`` bitset supported Rx filters
1091 ``ETHTOOL_A_TSINFO_PHC_INDEX`` u32 PTP hw clock index
1092 ===================================== ====== ==========================
1094 ``ETHTOOL_A_TSINFO_PHC_INDEX`` is absent if there is no associated PHC (there
1095 is no special value for this case). The bitset attributes are omitted if they
1096 would be empty (no bit set).
1105 ==================================== ====== ==========================
1106 ``ETHTOOL_A_CABLE_TEST_HEADER`` nested request header
1107 ==================================== ====== ==========================
1109 Notification contents:
1111 An Ethernet cable typically contains 1, 2 or 4 pairs. The length of
1112 the pair can only be measured when there is a fault in the pair and
1113 hence a reflection. Information about the fault may not be available,
1114 depending on the specific hardware. Hence the contents of the notify
1115 message are mostly optional. The attributes can be repeated an
1116 arbitrary number of times, in an arbitrary order, for an arbitrary
1119 The example shows the notification sent when the test is completed for
1120 a T2 cable, i.e. two pairs. One pair is OK and hence has no length
1121 information. The second pair has a fault and does have length
1124 +---------------------------------------------+--------+---------------------+
1125 | ``ETHTOOL_A_CABLE_TEST_HEADER`` | nested | reply header |
1126 +---------------------------------------------+--------+---------------------+
1127 | ``ETHTOOL_A_CABLE_TEST_STATUS`` | u8 | completed |
1128 +---------------------------------------------+--------+---------------------+
1129 | ``ETHTOOL_A_CABLE_TEST_NTF_NEST`` | nested | all the results |
1130 +-+-------------------------------------------+--------+---------------------+
1131 | | ``ETHTOOL_A_CABLE_NEST_RESULT`` | nested | cable test result |
1132 +-+-+-----------------------------------------+--------+---------------------+
1133 | | | ``ETHTOOL_A_CABLE_RESULTS_PAIR`` | u8 | pair number |
1134 +-+-+-----------------------------------------+--------+---------------------+
1135 | | | ``ETHTOOL_A_CABLE_RESULTS_CODE`` | u8 | result code |
1136 +-+-+-----------------------------------------+--------+---------------------+
1137 | | ``ETHTOOL_A_CABLE_NEST_RESULT`` | nested | cable test results |
1138 +-+-+-----------------------------------------+--------+---------------------+
1139 | | | ``ETHTOOL_A_CABLE_RESULTS_PAIR`` | u8 | pair number |
1140 +-+-+-----------------------------------------+--------+---------------------+
1141 | | | ``ETHTOOL_A_CABLE_RESULTS_CODE`` | u8 | result code |
1142 +-+-+-----------------------------------------+--------+---------------------+
1143 | | ``ETHTOOL_A_CABLE_NEST_FAULT_LENGTH`` | nested | cable length |
1144 +-+-+-----------------------------------------+--------+---------------------+
1145 | | | ``ETHTOOL_A_CABLE_FAULT_LENGTH_PAIR`` | u8 | pair number |
1146 +-+-+-----------------------------------------+--------+---------------------+
1147 | | | ``ETHTOOL_A_CABLE_FAULT_LENGTH_CM`` | u32 | length in cm |
1148 +-+-+-----------------------------------------+--------+---------------------+
1153 Start a cable test and report raw TDR data
1157 +--------------------------------------------+--------+-----------------------+
1158 | ``ETHTOOL_A_CABLE_TEST_TDR_HEADER`` | nested | reply header |
1159 +--------------------------------------------+--------+-----------------------+
1160 | ``ETHTOOL_A_CABLE_TEST_TDR_CFG`` | nested | test configuration |
1161 +-+------------------------------------------+--------+-----------------------+
1162 | | ``ETHTOOL_A_CABLE_STEP_FIRST_DISTANCE`` | u32 | first data distance |
1163 +-+-+----------------------------------------+--------+-----------------------+
1164 | | ``ETHTOOL_A_CABLE_STEP_LAST_DISTANCE`` | u32 | last data distance |
1165 +-+-+----------------------------------------+--------+-----------------------+
1166 | | ``ETHTOOL_A_CABLE_STEP_STEP_DISTANCE`` | u32 | distance of each step |
1167 +-+-+----------------------------------------+--------+-----------------------+
1168 | | ``ETHTOOL_A_CABLE_TEST_TDR_CFG_PAIR`` | u8 | pair to test |
1169 +-+-+----------------------------------------+--------+-----------------------+
1171 The ETHTOOL_A_CABLE_TEST_TDR_CFG is optional, as well as all members
1172 of the nest. All distances are expressed in centimeters. The PHY takes
1173 the distances as a guide, and rounds to the nearest distance it
1174 actually supports. If a pair is passed, only that one pair will be
1175 tested. Otherwise all pairs are tested.
1177 Notification contents:
1179 Raw TDR data is gathered by sending a pulse down the cable and
1180 recording the amplitude of the reflected pulse for a given distance.
1182 It can take a number of seconds to collect TDR data, especial if the
1183 full 100 meters is probed at 1 meter intervals. When the test is
1184 started a notification will be sent containing just
1185 ETHTOOL_A_CABLE_TEST_TDR_STATUS with the value
1186 ETHTOOL_A_CABLE_TEST_NTF_STATUS_STARTED.
1188 When the test has completed a second notification will be sent
1189 containing ETHTOOL_A_CABLE_TEST_TDR_STATUS with the value
1190 ETHTOOL_A_CABLE_TEST_NTF_STATUS_COMPLETED and the TDR data.
1192 The message may optionally contain the amplitude of the pulse send
1193 down the cable. This is measured in mV. A reflection should not be
1194 bigger than transmitted pulse.
1196 Before the raw TDR data should be an ETHTOOL_A_CABLE_TDR_NEST_STEP
1197 nest containing information about the distance along the cable for the
1198 first reading, the last reading, and the step between each
1199 reading. Distances are measured in centimeters. These should be the
1200 exact values the PHY used. These may be different to what the user
1201 requested, if the native measurement resolution is greater than 1 cm.
1203 For each step along the cable, a ETHTOOL_A_CABLE_TDR_NEST_AMPLITUDE is
1204 used to report the amplitude of the reflection for a given pair.
1206 +---------------------------------------------+--------+----------------------+
1207 | ``ETHTOOL_A_CABLE_TEST_TDR_HEADER`` | nested | reply header |
1208 +---------------------------------------------+--------+----------------------+
1209 | ``ETHTOOL_A_CABLE_TEST_TDR_STATUS`` | u8 | completed |
1210 +---------------------------------------------+--------+----------------------+
1211 | ``ETHTOOL_A_CABLE_TEST_TDR_NTF_NEST`` | nested | all the results |
1212 +-+-------------------------------------------+--------+----------------------+
1213 | | ``ETHTOOL_A_CABLE_TDR_NEST_PULSE`` | nested | TX Pulse amplitude |
1214 +-+-+-----------------------------------------+--------+----------------------+
1215 | | | ``ETHTOOL_A_CABLE_PULSE_mV`` | s16 | Pulse amplitude |
1216 +-+-+-----------------------------------------+--------+----------------------+
1217 | | ``ETHTOOL_A_CABLE_NEST_STEP`` | nested | TDR step info |
1218 +-+-+-----------------------------------------+--------+----------------------+
1219 | | | ``ETHTOOL_A_CABLE_STEP_FIRST_DISTANCE`` | u32 | First data distance |
1220 +-+-+-----------------------------------------+--------+----------------------+
1221 | | | ``ETHTOOL_A_CABLE_STEP_LAST_DISTANCE`` | u32 | Last data distance |
1222 +-+-+-----------------------------------------+--------+----------------------+
1223 | | | ``ETHTOOL_A_CABLE_STEP_STEP_DISTANCE`` | u32 | distance of each step|
1224 +-+-+-----------------------------------------+--------+----------------------+
1225 | | ``ETHTOOL_A_CABLE_TDR_NEST_AMPLITUDE`` | nested | Reflection amplitude |
1226 +-+-+-----------------------------------------+--------+----------------------+
1227 | | | ``ETHTOOL_A_CABLE_RESULTS_PAIR`` | u8 | pair number |
1228 +-+-+-----------------------------------------+--------+----------------------+
1229 | | | ``ETHTOOL_A_CABLE_AMPLITUDE_mV`` | s16 | Reflection amplitude |
1230 +-+-+-----------------------------------------+--------+----------------------+
1231 | | ``ETHTOOL_A_CABLE_TDR_NEST_AMPLITUDE`` | nested | Reflection amplitude |
1232 +-+-+-----------------------------------------+--------+----------------------+
1233 | | | ``ETHTOOL_A_CABLE_RESULTS_PAIR`` | u8 | pair number |
1234 +-+-+-----------------------------------------+--------+----------------------+
1235 | | | ``ETHTOOL_A_CABLE_AMPLITUDE_mV`` | s16 | Reflection amplitude |
1236 +-+-+-----------------------------------------+--------+----------------------+
1237 | | ``ETHTOOL_A_CABLE_TDR_NEST_AMPLITUDE`` | nested | Reflection amplitude |
1238 +-+-+-----------------------------------------+--------+----------------------+
1239 | | | ``ETHTOOL_A_CABLE_RESULTS_PAIR`` | u8 | pair number |
1240 +-+-+-----------------------------------------+--------+----------------------+
1241 | | | ``ETHTOOL_A_CABLE_AMPLITUDE_mV`` | s16 | Reflection amplitude |
1242 +-+-+-----------------------------------------+--------+----------------------+
1247 Gets information about the tunnel state NIC is aware of.
1251 ===================================== ====== ==========================
1252 ``ETHTOOL_A_TUNNEL_INFO_HEADER`` nested request header
1253 ===================================== ====== ==========================
1255 Kernel response contents:
1257 +---------------------------------------------+--------+---------------------+
1258 | ``ETHTOOL_A_TUNNEL_INFO_HEADER`` | nested | reply header |
1259 +---------------------------------------------+--------+---------------------+
1260 | ``ETHTOOL_A_TUNNEL_INFO_UDP_PORTS`` | nested | all UDP port tables |
1261 +-+-------------------------------------------+--------+---------------------+
1262 | | ``ETHTOOL_A_TUNNEL_UDP_TABLE`` | nested | one UDP port table |
1263 +-+-+-----------------------------------------+--------+---------------------+
1264 | | | ``ETHTOOL_A_TUNNEL_UDP_TABLE_SIZE`` | u32 | max size of the |
1266 +-+-+-----------------------------------------+--------+---------------------+
1267 | | | ``ETHTOOL_A_TUNNEL_UDP_TABLE_TYPES`` | bitset | tunnel types which |
1268 | | | | | table can hold |
1269 +-+-+-----------------------------------------+--------+---------------------+
1270 | | | ``ETHTOOL_A_TUNNEL_UDP_TABLE_ENTRY`` | nested | offloaded UDP port |
1271 +-+-+-+---------------------------------------+--------+---------------------+
1272 | | | | ``ETHTOOL_A_TUNNEL_UDP_ENTRY_PORT`` | be16 | UDP port |
1273 +-+-+-+---------------------------------------+--------+---------------------+
1274 | | | | ``ETHTOOL_A_TUNNEL_UDP_ENTRY_TYPE`` | u32 | tunnel type |
1275 +-+-+-+---------------------------------------+--------+---------------------+
1277 For UDP tunnel table empty ``ETHTOOL_A_TUNNEL_UDP_TABLE_TYPES`` indicates that
1278 the table contains static entries, hard-coded by the NIC.
1283 The following table maps ioctl commands to netlink commands providing their
1284 functionality. Entries with "n/a" in right column are commands which do not
1285 have their netlink replacement yet. Entries which "n/a" in the left column
1288 =================================== =====================================
1289 ioctl command netlink command
1290 =================================== =====================================
1291 ``ETHTOOL_GSET`` ``ETHTOOL_MSG_LINKINFO_GET``
1292 ``ETHTOOL_MSG_LINKMODES_GET``
1293 ``ETHTOOL_SSET`` ``ETHTOOL_MSG_LINKINFO_SET``
1294 ``ETHTOOL_MSG_LINKMODES_SET``
1295 ``ETHTOOL_GDRVINFO`` n/a
1296 ``ETHTOOL_GREGS`` n/a
1297 ``ETHTOOL_GWOL`` ``ETHTOOL_MSG_WOL_GET``
1298 ``ETHTOOL_SWOL`` ``ETHTOOL_MSG_WOL_SET``
1299 ``ETHTOOL_GMSGLVL`` ``ETHTOOL_MSG_DEBUG_GET``
1300 ``ETHTOOL_SMSGLVL`` ``ETHTOOL_MSG_DEBUG_SET``
1301 ``ETHTOOL_NWAY_RST`` n/a
1302 ``ETHTOOL_GLINK`` ``ETHTOOL_MSG_LINKSTATE_GET``
1303 ``ETHTOOL_GEEPROM`` n/a
1304 ``ETHTOOL_SEEPROM`` n/a
1305 ``ETHTOOL_GCOALESCE`` ``ETHTOOL_MSG_COALESCE_GET``
1306 ``ETHTOOL_SCOALESCE`` ``ETHTOOL_MSG_COALESCE_SET``
1307 ``ETHTOOL_GRINGPARAM`` ``ETHTOOL_MSG_RINGS_GET``
1308 ``ETHTOOL_SRINGPARAM`` ``ETHTOOL_MSG_RINGS_SET``
1309 ``ETHTOOL_GPAUSEPARAM`` ``ETHTOOL_MSG_PAUSE_GET``
1310 ``ETHTOOL_SPAUSEPARAM`` ``ETHTOOL_MSG_PAUSE_SET``
1311 ``ETHTOOL_GRXCSUM`` ``ETHTOOL_MSG_FEATURES_GET``
1312 ``ETHTOOL_SRXCSUM`` ``ETHTOOL_MSG_FEATURES_SET``
1313 ``ETHTOOL_GTXCSUM`` ``ETHTOOL_MSG_FEATURES_GET``
1314 ``ETHTOOL_STXCSUM`` ``ETHTOOL_MSG_FEATURES_SET``
1315 ``ETHTOOL_GSG`` ``ETHTOOL_MSG_FEATURES_GET``
1316 ``ETHTOOL_SSG`` ``ETHTOOL_MSG_FEATURES_SET``
1317 ``ETHTOOL_TEST`` n/a
1318 ``ETHTOOL_GSTRINGS`` ``ETHTOOL_MSG_STRSET_GET``
1319 ``ETHTOOL_PHYS_ID`` n/a
1320 ``ETHTOOL_GSTATS`` n/a
1321 ``ETHTOOL_GTSO`` ``ETHTOOL_MSG_FEATURES_GET``
1322 ``ETHTOOL_STSO`` ``ETHTOOL_MSG_FEATURES_SET``
1323 ``ETHTOOL_GPERMADDR`` rtnetlink ``RTM_GETLINK``
1324 ``ETHTOOL_GUFO`` ``ETHTOOL_MSG_FEATURES_GET``
1325 ``ETHTOOL_SUFO`` ``ETHTOOL_MSG_FEATURES_SET``
1326 ``ETHTOOL_GGSO`` ``ETHTOOL_MSG_FEATURES_GET``
1327 ``ETHTOOL_SGSO`` ``ETHTOOL_MSG_FEATURES_SET``
1328 ``ETHTOOL_GFLAGS`` ``ETHTOOL_MSG_FEATURES_GET``
1329 ``ETHTOOL_SFLAGS`` ``ETHTOOL_MSG_FEATURES_SET``
1330 ``ETHTOOL_GPFLAGS`` ``ETHTOOL_MSG_PRIVFLAGS_GET``
1331 ``ETHTOOL_SPFLAGS`` ``ETHTOOL_MSG_PRIVFLAGS_SET``
1332 ``ETHTOOL_GRXFH`` n/a
1333 ``ETHTOOL_SRXFH`` n/a
1334 ``ETHTOOL_GGRO`` ``ETHTOOL_MSG_FEATURES_GET``
1335 ``ETHTOOL_SGRO`` ``ETHTOOL_MSG_FEATURES_SET``
1336 ``ETHTOOL_GRXRINGS`` n/a
1337 ``ETHTOOL_GRXCLSRLCNT`` n/a
1338 ``ETHTOOL_GRXCLSRULE`` n/a
1339 ``ETHTOOL_GRXCLSRLALL`` n/a
1340 ``ETHTOOL_SRXCLSRLDEL`` n/a
1341 ``ETHTOOL_SRXCLSRLINS`` n/a
1342 ``ETHTOOL_FLASHDEV`` n/a
1343 ``ETHTOOL_RESET`` n/a
1344 ``ETHTOOL_SRXNTUPLE`` n/a
1345 ``ETHTOOL_GRXNTUPLE`` n/a
1346 ``ETHTOOL_GSSET_INFO`` ``ETHTOOL_MSG_STRSET_GET``
1347 ``ETHTOOL_GRXFHINDIR`` n/a
1348 ``ETHTOOL_SRXFHINDIR`` n/a
1349 ``ETHTOOL_GFEATURES`` ``ETHTOOL_MSG_FEATURES_GET``
1350 ``ETHTOOL_SFEATURES`` ``ETHTOOL_MSG_FEATURES_SET``
1351 ``ETHTOOL_GCHANNELS`` ``ETHTOOL_MSG_CHANNELS_GET``
1352 ``ETHTOOL_SCHANNELS`` ``ETHTOOL_MSG_CHANNELS_SET``
1353 ``ETHTOOL_SET_DUMP`` n/a
1354 ``ETHTOOL_GET_DUMP_FLAG`` n/a
1355 ``ETHTOOL_GET_DUMP_DATA`` n/a
1356 ``ETHTOOL_GET_TS_INFO`` ``ETHTOOL_MSG_TSINFO_GET``
1357 ``ETHTOOL_GMODULEINFO`` n/a
1358 ``ETHTOOL_GMODULEEEPROM`` n/a
1359 ``ETHTOOL_GEEE`` ``ETHTOOL_MSG_EEE_GET``
1360 ``ETHTOOL_SEEE`` ``ETHTOOL_MSG_EEE_SET``
1361 ``ETHTOOL_GRSSH`` n/a
1362 ``ETHTOOL_SRSSH`` n/a
1363 ``ETHTOOL_GTUNABLE`` n/a
1364 ``ETHTOOL_STUNABLE`` n/a
1365 ``ETHTOOL_GPHYSTATS`` n/a
1366 ``ETHTOOL_PERQUEUE`` n/a
1367 ``ETHTOOL_GLINKSETTINGS`` ``ETHTOOL_MSG_LINKINFO_GET``
1368 ``ETHTOOL_MSG_LINKMODES_GET``
1369 ``ETHTOOL_SLINKSETTINGS`` ``ETHTOOL_MSG_LINKINFO_SET``
1370 ``ETHTOOL_MSG_LINKMODES_SET``
1371 ``ETHTOOL_PHY_GTUNABLE`` n/a
1372 ``ETHTOOL_PHY_STUNABLE`` n/a
1373 ``ETHTOOL_GFECPARAM`` n/a
1374 ``ETHTOOL_SFECPARAM`` n/a
1375 n/a ''ETHTOOL_MSG_CABLE_TEST_ACT''
1376 n/a ''ETHTOOL_MSG_CABLE_TEST_TDR_ACT''
1377 =================================== =====================================